1	//===-- Clang.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//
2	//
3	// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4	// See https://llvm.org/LICENSE.txt for license information.
5	// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6	//
7	//===----------------------------------------------------------------------===//
8
9	#include "Clang.h"
10	#include "Arch/ARM.h"
11	#include "Arch/LoongArch.h"
12	#include "Arch/Mips.h"
13	#include "Arch/PPC.h"
14	#include "Arch/RISCV.h"
15	#include "Arch/Sparc.h"
16	#include "Arch/SystemZ.h"
17	#include "Hexagon.h"
18	#include "PS4CPU.h"
19	#include "clang/Basic/CLWarnings.h"
20	#include "clang/Basic/CodeGenOptions.h"
21	#include "clang/Basic/HeaderInclude.h"
22	#include "clang/Basic/LangOptions.h"
23	#include "clang/Basic/MakeSupport.h"
24	#include "clang/Basic/ObjCRuntime.h"
25	#include "clang/Basic/Version.h"
26	#include "clang/Config/config.h"
27	#include "clang/Driver/Action.h"
28	#include "clang/Driver/CommonArgs.h"
29	#include "clang/Driver/Distro.h"
30	#include "clang/Driver/InputInfo.h"
31	#include "clang/Driver/Options.h"
32	#include "clang/Driver/SanitizerArgs.h"
33	#include "clang/Driver/Types.h"
34	#include "clang/Driver/XRayArgs.h"
35	#include "llvm/ADT/ScopeExit.h"
36	#include "llvm/ADT/SmallSet.h"
37	#include "llvm/ADT/StringExtras.h"
38	#include "llvm/BinaryFormat/Magic.h"
39	#include "llvm/Config/llvm-config.h"
40	#include "llvm/Frontend/Debug/Options.h"
41	#include "llvm/Object/ObjectFile.h"
42	#include "llvm/Option/ArgList.h"
43	#include "llvm/Support/CodeGen.h"
44	#include "llvm/Support/Compiler.h"
45	#include "llvm/Support/Compression.h"
46	#include "llvm/Support/Error.h"
47	#include "llvm/Support/FileSystem.h"
48	#include "llvm/Support/Path.h"
49	#include "llvm/Support/Process.h"
50	#include "llvm/Support/YAMLParser.h"
51	#include "llvm/TargetParser/AArch64TargetParser.h"
52	#include "llvm/TargetParser/ARMTargetParserCommon.h"
53	#include "llvm/TargetParser/Host.h"
54	#include "llvm/TargetParser/LoongArchTargetParser.h"
55	#include "llvm/TargetParser/PPCTargetParser.h"
56	#include "llvm/TargetParser/RISCVISAInfo.h"
57	#include "llvm/TargetParser/RISCVTargetParser.h"
58	#include <cctype>
59
60	using namespace clang::driver;
61	using namespace clang::driver::tools;
62	using namespace clang;
63	using namespace llvm::opt;
64
65	static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
66	if (Arg *A = Args.getLastArg(Ids: clang::driver::options::OPT_C, Ids: options::OPT_CC,
67	Ids: options::OPT_fminimize_whitespace,
68	Ids: options::OPT_fno_minimize_whitespace,
69	Ids: options::OPT_fkeep_system_includes,
70	Ids: options::OPT_fno_keep_system_includes)) {
71	if (!Args.hasArg(Ids: options::OPT_E) && !Args.hasArg(Ids: options::OPT__SLASH_P) &&
72	!Args.hasArg(Ids: options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
73	D.Diag(DiagID: clang::diag::err_drv_argument_only_allowed_with)
74	<< A->getBaseArg().getAsString(Args)
75	<< (D.IsCLMode() ? "/E, /P or /EP" : "-E");
76	}
77	}
78	}
79
80	static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
81	// In gcc, only ARM checks this, but it seems reasonable to check universally.
82	if (Args.hasArg(Ids: options::OPT_static))
83	if (const Arg *A =
84	Args.getLastArg(Ids: options::OPT_dynamic, Ids: options::OPT_mdynamic_no_pic))
85	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
86	<< "-static";
87	}
88
89	/// Apply \a Work on the current tool chain \a RegularToolChain and any other
90	/// offloading tool chain that is associated with the current action \a JA.
91	static void
92	forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
93	const ToolChain &RegularToolChain,
94	llvm::function_ref<void(const ToolChain &)> Work) {
95	// Apply Work on the current/regular tool chain.
96	Work(RegularToolChain);
97
98	// Apply Work on all the offloading tool chains associated with the current
99	// action.
100	if (JA.isHostOffloading(OKind: Action::OFK_Cuda))
101	Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
102	else if (JA.isDeviceOffloading(OKind: Action::OFK_Cuda))
103	Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
104	else if (JA.isHostOffloading(OKind: Action::OFK_HIP))
105	Work(*C.getSingleOffloadToolChain<Action::OFK_HIP>());
106	else if (JA.isDeviceOffloading(OKind: Action::OFK_HIP))
107	Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
108
109	if (JA.isHostOffloading(OKind: Action::OFK_OpenMP)) {
110	auto TCs = C.getOffloadToolChains<Action::OFK_OpenMP>();
111	for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
112	Work(*II->second);
113	} else if (JA.isDeviceOffloading(OKind: Action::OFK_OpenMP))
114	Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
115
116	if (JA.isHostOffloading(OKind: Action::OFK_SYCL)) {
117	auto TCs = C.getOffloadToolChains<Action::OFK_SYCL>();
118	for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)
119	Work(*II->second);
120	} else if (JA.isDeviceOffloading(OKind: Action::OFK_SYCL))
121	Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
122
123	//
124	// TODO: Add support for other offloading programming models here.
125	//
126	}
127
128	static bool
129	shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
130	const llvm::Triple &Triple) {
131	// We use the zero-cost exception tables for Objective-C if the non-fragile
132	// ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
133	// later.
134	if (runtime.isNonFragile())
135	return true;
136
137	if (!Triple.isMacOSX())
138	return false;
139
140	return (!Triple.isMacOSXVersionLT(Major: 10, Minor: 5) &&
141	(Triple.getArch() == llvm::Triple::x86_64 ||
142	Triple.getArch() == llvm::Triple::arm));
143	}
144
145	/// Adds exception related arguments to the driver command arguments. There's a
146	/// main flag, -fexceptions and also language specific flags to enable/disable
147	/// C++ and Objective-C exceptions. This makes it possible to for example
148	/// disable C++ exceptions but enable Objective-C exceptions.
149	static bool addExceptionArgs(const ArgList &Args, types::ID InputType,
150	const ToolChain &TC, bool KernelOrKext,
151	const ObjCRuntime &objcRuntime,
152	ArgStringList &CmdArgs) {
153	const llvm::Triple &Triple = TC.getTriple();
154
155	if (KernelOrKext) {
156	// -mkernel and -fapple-kext imply no exceptions, so claim exception related
157	// arguments now to avoid warnings about unused arguments.
158	Args.ClaimAllArgs(Id0: options::OPT_fexceptions);
159	Args.ClaimAllArgs(Id0: options::OPT_fno_exceptions);
160	Args.ClaimAllArgs(Id0: options::OPT_fobjc_exceptions);
161	Args.ClaimAllArgs(Id0: options::OPT_fno_objc_exceptions);
162	Args.ClaimAllArgs(Id0: options::OPT_fcxx_exceptions);
163	Args.ClaimAllArgs(Id0: options::OPT_fno_cxx_exceptions);
164	Args.ClaimAllArgs(Id0: options::OPT_fasync_exceptions);
165	Args.ClaimAllArgs(Id0: options::OPT_fno_async_exceptions);
166	return false;
167	}
168
169	// See if the user explicitly enabled exceptions.
170	bool EH = Args.hasFlag(Pos: options::OPT_fexceptions, Neg: options::OPT_fno_exceptions,
171	Default: false);
172
173	// Async exceptions are Windows MSVC only.
174	if (Triple.isWindowsMSVCEnvironment()) {
175	bool EHa = Args.hasFlag(Pos: options::OPT_fasync_exceptions,
176	Neg: options::OPT_fno_async_exceptions, Default: false);
177	if (EHa) {
178	CmdArgs.push_back(Elt: "-fasync-exceptions");
179	EH = true;
180	}
181	}
182
183	// Obj-C exceptions are enabled by default, regardless of -fexceptions. This
184	// is not necessarily sensible, but follows GCC.
185	if (types::isObjC(Id: InputType) &&
186	Args.hasFlag(Pos: options::OPT_fobjc_exceptions,
187	Neg: options::OPT_fno_objc_exceptions, Default: true)) {
188	CmdArgs.push_back(Elt: "-fobjc-exceptions");
189
190	EH |= shouldUseExceptionTablesForObjCExceptions(runtime: objcRuntime, Triple);
191	}
192
193	if (types::isCXX(Id: InputType)) {
194	// Disable C++ EH by default on XCore and PS4/PS5.
195	bool CXXExceptionsEnabled = Triple.getArch() != llvm::Triple::xcore &&
196	!Triple.isPS() && !Triple.isDriverKit();
197	Arg *ExceptionArg = Args.getLastArg(
198	Ids: options::OPT_fcxx_exceptions, Ids: options::OPT_fno_cxx_exceptions,
199	Ids: options::OPT_fexceptions, Ids: options::OPT_fno_exceptions);
200	if (ExceptionArg)
201	CXXExceptionsEnabled =
202	ExceptionArg->getOption().matches(ID: options::OPT_fcxx_exceptions) ||
203	ExceptionArg->getOption().matches(ID: options::OPT_fexceptions);
204
205	if (CXXExceptionsEnabled) {
206	CmdArgs.push_back(Elt: "-fcxx-exceptions");
207
208	EH = true;
209	}
210	}
211
212	// OPT_fignore_exceptions means exception could still be thrown,
213	// but no clean up or catch would happen in current module.
214	// So we do not set EH to false.
215	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fignore_exceptions);
216
217	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fassume_nothrow_exception_dtor,
218	Neg: options::OPT_fno_assume_nothrow_exception_dtor);
219
220	if (EH)
221	CmdArgs.push_back(Elt: "-fexceptions");
222	return EH;
223	}
224
225	static bool ShouldEnableAutolink(const ArgList &Args, const ToolChain &TC,
226	const JobAction &JA) {
227	bool Default = true;
228	if (TC.getTriple().isOSDarwin()) {
229	// The native darwin assembler doesn't support the linker_option directives,
230	// so we disable them if we think the .s file will be passed to it.
231	Default = TC.useIntegratedAs();
232	}
233	// The linker_option directives are intended for host compilation.
234	if (JA.isDeviceOffloading(OKind: Action::OFK_Cuda) ||
235	JA.isDeviceOffloading(OKind: Action::OFK_HIP))
236	Default = false;
237	return Args.hasFlag(Pos: options::OPT_fautolink, Neg: options::OPT_fno_autolink,
238	Default);
239	}
240
241	/// Add a CC1 option to specify the debug compilation directory.
242	static const char *addDebugCompDirArg(const ArgList &Args,
243	ArgStringList &CmdArgs,
244	const llvm::vfs::FileSystem &VFS) {
245	if (Arg *A = Args.getLastArg(Ids: options::OPT_ffile_compilation_dir_EQ,
246	Ids: options::OPT_fdebug_compilation_dir_EQ)) {
247	if (A->getOption().matches(ID: options::OPT_ffile_compilation_dir_EQ))
248	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-fdebug-compilation-dir=") +
249	A->getValue()));
250	else
251	A->render(Args, Output&: CmdArgs);
252	} else if (llvm::ErrorOr<std::string> CWD =
253	VFS.getCurrentWorkingDirectory()) {
254	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fdebug-compilation-dir=" + *CWD));
255	}
256	StringRef Path(CmdArgs.back());
257	return Path.substr(Start: Path.find(C: '=') + 1).data();
258	}
259
260	static void addDebugObjectName(const ArgList &Args, ArgStringList &CmdArgs,
261	const char *DebugCompilationDir,
262	const char *OutputFileName) {
263	// No need to generate a value for -object-file-name if it was provided.
264	for (auto *Arg : Args.filtered(Ids: options::OPT_Xclang))
265	if (StringRef(Arg->getValue()).starts_with(Prefix: "-object-file-name"))
266	return;
267
268	if (Args.hasArg(Ids: options::OPT_object_file_name_EQ))
269	return;
270
271	SmallString<128> ObjFileNameForDebug(OutputFileName);
272	if (ObjFileNameForDebug != "-" &&
273	!llvm::sys::path::is_absolute(path: ObjFileNameForDebug) &&
274	(!DebugCompilationDir ||
275	llvm::sys::path::is_absolute(path: DebugCompilationDir))) {
276	// Make the path absolute in the debug infos like MSVC does.
277	llvm::sys::fs::make_absolute(path&: ObjFileNameForDebug);
278	}
279	// If the object file name is a relative path, then always use Windows
280	// backslash style as -object-file-name is used for embedding object file path
281	// in codeview and it can only be generated when targeting on Windows.
282	// Otherwise, just use native absolute path.
283	llvm::sys::path::Style Style =
284	llvm::sys::path::is_absolute(path: ObjFileNameForDebug)
285	? llvm::sys::path::Style::native
286	: llvm::sys::path::Style::windows_backslash;
287	llvm::sys::path::remove_dots(path&: ObjFileNameForDebug, /*remove_dot_dot=*/true,
288	style: Style);
289	CmdArgs.push_back(
290	Elt: Args.MakeArgString(Str: Twine("-object-file-name=") + ObjFileNameForDebug));
291	}
292
293	/// Add a CC1 and CC1AS option to specify the debug file path prefix map.
294	static void addDebugPrefixMapArg(const Driver &D, const ToolChain &TC,
295	const ArgList &Args, ArgStringList &CmdArgs) {
296	auto AddOneArg = [&](StringRef Map, StringRef Name) {
297	if (!Map.contains(C: '='))
298	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option) << Map << Name;
299	else
300	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fdebug-prefix-map=" + Map));
301	};
302
303	for (const Arg *A : Args.filtered(Ids: options::OPT_ffile_prefix_map_EQ,
304	Ids: options::OPT_fdebug_prefix_map_EQ)) {
305	AddOneArg(A->getValue(), A->getOption().getName());
306	A->claim();
307	}
308	std::string GlobalRemapEntry = TC.GetGlobalDebugPathRemapping();
309	if (GlobalRemapEntry.empty())
310	return;
311	AddOneArg(GlobalRemapEntry, "environment");
312	}
313
314	/// Add a CC1 and CC1AS option to specify the macro file path prefix map.
315	static void addMacroPrefixMapArg(const Driver &D, const ArgList &Args,
316	ArgStringList &CmdArgs) {
317	for (const Arg *A : Args.filtered(Ids: options::OPT_ffile_prefix_map_EQ,
318	Ids: options::OPT_fmacro_prefix_map_EQ)) {
319	StringRef Map = A->getValue();
320	if (!Map.contains(C: '='))
321	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
322	<< Map << A->getOption().getName();
323	else
324	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fmacro-prefix-map=" + Map));
325	A->claim();
326	}
327	}
328
329	/// Add a CC1 and CC1AS option to specify the coverage file path prefix map.
330	static void addCoveragePrefixMapArg(const Driver &D, const ArgList &Args,
331	ArgStringList &CmdArgs) {
332	for (const Arg *A : Args.filtered(Ids: options::OPT_ffile_prefix_map_EQ,
333	Ids: options::OPT_fcoverage_prefix_map_EQ)) {
334	StringRef Map = A->getValue();
335	if (!Map.contains(C: '='))
336	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
337	<< Map << A->getOption().getName();
338	else
339	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fcoverage-prefix-map=" + Map));
340	A->claim();
341	}
342	}
343
344	/// Add -x lang to \p CmdArgs for \p Input.
345	static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
346	ArgStringList &CmdArgs) {
347	// When using -verify-pch, we don't want to provide the type
348	// 'precompiled-header' if it was inferred from the file extension
349	if (Args.hasArg(Ids: options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
350	return;
351
352	CmdArgs.push_back(Elt: "-x");
353	if (Args.hasArg(Ids: options::OPT_rewrite_objc))
354	CmdArgs.push_back(Elt: types::getTypeName(Id: types::TY_ObjCXX));
355	else {
356	// Map the driver type to the frontend type. This is mostly an identity
357	// mapping, except that the distinction between module interface units
358	// and other source files does not exist at the frontend layer.
359	const char *ClangType;
360	switch (Input.getType()) {
361	case types::TY_CXXModule:
362	ClangType = "c++";
363	break;
364	case types::TY_PP_CXXModule:
365	ClangType = "c++-cpp-output";
366	break;
367	default:
368	ClangType = types::getTypeName(Id: Input.getType());
369	break;
370	}
371	CmdArgs.push_back(Elt: ClangType);
372	}
373	}
374
375	static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,
376	const JobAction &JA, const InputInfo &Output,
377	const ArgList &Args, SanitizerArgs &SanArgs,
378	ArgStringList &CmdArgs) {
379	const Driver &D = TC.getDriver();
380	const llvm::Triple &T = TC.getTriple();
381	auto *PGOGenerateArg = Args.getLastArg(Ids: options::OPT_fprofile_generate,
382	Ids: options::OPT_fprofile_generate_EQ,
383	Ids: options::OPT_fno_profile_generate);
384	if (PGOGenerateArg &&
385	PGOGenerateArg->getOption().matches(ID: options::OPT_fno_profile_generate))
386	PGOGenerateArg = nullptr;
387
388	auto *CSPGOGenerateArg = getLastCSProfileGenerateArg(Args);
389
390	auto *ProfileGenerateArg = Args.getLastArg(
391	Ids: options::OPT_fprofile_instr_generate,
392	Ids: options::OPT_fprofile_instr_generate_EQ,
393	Ids: options::OPT_fno_profile_instr_generate);
394	if (ProfileGenerateArg &&
395	ProfileGenerateArg->getOption().matches(
396	ID: options::OPT_fno_profile_instr_generate))
397	ProfileGenerateArg = nullptr;
398
399	if (PGOGenerateArg && ProfileGenerateArg)
400	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
401	<< PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
402
403	auto *ProfileUseArg = getLastProfileUseArg(Args);
404
405	if (PGOGenerateArg && ProfileUseArg)
406	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
407	<< ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
408
409	if (ProfileGenerateArg && ProfileUseArg)
410	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
411	<< ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
412
413	if (CSPGOGenerateArg && PGOGenerateArg) {
414	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
415	<< CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();
416	PGOGenerateArg = nullptr;
417	}
418
419	if (TC.getTriple().isOSAIX()) {
420	if (Arg *ProfileSampleUseArg = getLastProfileSampleUseArg(Args))
421	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
422	<< ProfileSampleUseArg->getSpelling() << TC.getTriple().str();
423	}
424
425	if (ProfileGenerateArg) {
426	if (ProfileGenerateArg->getOption().matches(
427	ID: options::OPT_fprofile_instr_generate_EQ))
428	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-fprofile-instrument-path=") +
429	ProfileGenerateArg->getValue()));
430	// The default is to use Clang Instrumentation.
431	CmdArgs.push_back(Elt: "-fprofile-instrument=clang");
432	if (TC.getTriple().isWindowsMSVCEnvironment() &&
433	Args.hasFlag(Pos: options::OPT_frtlib_defaultlib,
434	Neg: options::OPT_fno_rtlib_defaultlib, Default: true)) {
435	// Add dependent lib for clang_rt.profile
436	CmdArgs.push_back(Elt: Args.MakeArgString(
437	Str: "--dependent-lib=" + TC.getCompilerRTBasename(Args, Component: "profile")));
438	}
439	}
440
441	if (auto *ColdFuncCoverageArg = Args.getLastArg(
442	Ids: options::OPT_fprofile_generate_cold_function_coverage,
443	Ids: options::OPT_fprofile_generate_cold_function_coverage_EQ)) {
444	SmallString<128> Path(
445	ColdFuncCoverageArg->getOption().matches(
446	ID: options::OPT_fprofile_generate_cold_function_coverage_EQ)
447	? ColdFuncCoverageArg->getValue()
448	: "");
449	llvm::sys::path::append(path&: Path, a: "default_%m.profraw");
450	// FIXME: Idealy the file path should be passed through
451	// `-fprofile-instrument-path=`(InstrProfileOutput), however, this field is
452	// shared with other profile use path(see PGOOptions), we need to refactor
453	// PGOOptions to make it work.
454	CmdArgs.push_back(Elt: "-mllvm");
455	CmdArgs.push_back(Elt: Args.MakeArgString(
456	Str: Twine("--instrument-cold-function-only-path=") + Path));
457	CmdArgs.push_back(Elt: "-mllvm");
458	CmdArgs.push_back(Elt: "--pgo-instrument-cold-function-only");
459	CmdArgs.push_back(Elt: "-mllvm");
460	CmdArgs.push_back(Elt: "--pgo-function-entry-coverage");
461	CmdArgs.push_back(Elt: "-fprofile-instrument=sample-coldcov");
462	}
463
464	if (auto *A = Args.getLastArg(Ids: options::OPT_ftemporal_profile)) {
465	if (!PGOGenerateArg && !CSPGOGenerateArg)
466	D.Diag(DiagID: clang::diag::err_drv_argument_only_allowed_with)
467	<< A->getSpelling() << "-fprofile-generate or -fcs-profile-generate";
468	CmdArgs.push_back(Elt: "-mllvm");
469	CmdArgs.push_back(Elt: "--pgo-temporal-instrumentation");
470	}
471
472	Arg *PGOGenArg = nullptr;
473	if (PGOGenerateArg) {
474	assert(!CSPGOGenerateArg);
475	PGOGenArg = PGOGenerateArg;
476	CmdArgs.push_back(Elt: "-fprofile-instrument=llvm");
477	}
478	if (CSPGOGenerateArg) {
479	assert(!PGOGenerateArg);
480	PGOGenArg = CSPGOGenerateArg;
481	CmdArgs.push_back(Elt: "-fprofile-instrument=csllvm");
482	}
483	if (PGOGenArg) {
484	if (TC.getTriple().isWindowsMSVCEnvironment() &&
485	Args.hasFlag(Pos: options::OPT_frtlib_defaultlib,
486	Neg: options::OPT_fno_rtlib_defaultlib, Default: true)) {
487	// Add dependent lib for clang_rt.profile
488	CmdArgs.push_back(Elt: Args.MakeArgString(
489	Str: "--dependent-lib=" + TC.getCompilerRTBasename(Args, Component: "profile")));
490	}
491	if (PGOGenArg->getOption().matches(
492	ID: PGOGenerateArg ? options::OPT_fprofile_generate_EQ
493	: options::OPT_fcs_profile_generate_EQ)) {
494	SmallString<128> Path(PGOGenArg->getValue());
495	llvm::sys::path::append(path&: Path, a: "default_%m.profraw");
496	CmdArgs.push_back(
497	Elt: Args.MakeArgString(Str: Twine("-fprofile-instrument-path=") + Path));
498	}
499	}
500
501	if (ProfileUseArg) {
502	if (ProfileUseArg->getOption().matches(ID: options::OPT_fprofile_instr_use_EQ))
503	CmdArgs.push_back(Elt: Args.MakeArgString(
504	Str: Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
505	else if ((ProfileUseArg->getOption().matches(
506	ID: options::OPT_fprofile_use_EQ) ||
507	ProfileUseArg->getOption().matches(
508	ID: options::OPT_fprofile_instr_use))) {
509	SmallString<128> Path(
510	ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
511	if (Path.empty() || llvm::sys::fs::is_directory(Path))
512	llvm::sys::path::append(path&: Path, a: "default.profdata");
513	CmdArgs.push_back(
514	Elt: Args.MakeArgString(Str: Twine("-fprofile-instrument-use-path=") + Path));
515	}
516	}
517
518	bool EmitCovNotes = Args.hasFlag(Pos: options::OPT_ftest_coverage,
519	Neg: options::OPT_fno_test_coverage, Default: false) ||
520	Args.hasArg(Ids: options::OPT_coverage);
521	bool EmitCovData = TC.needsGCovInstrumentation(Args);
522
523	if (Args.hasFlag(Pos: options::OPT_fcoverage_mapping,
524	Neg: options::OPT_fno_coverage_mapping, Default: false)) {
525	if (!ProfileGenerateArg)
526	D.Diag(DiagID: clang::diag::err_drv_argument_only_allowed_with)
527	<< "-fcoverage-mapping"
528	<< "-fprofile-instr-generate";
529
530	CmdArgs.push_back(Elt: "-fcoverage-mapping");
531	}
532
533	if (Args.hasFlag(Pos: options::OPT_fmcdc_coverage, Neg: options::OPT_fno_mcdc_coverage,
534	Default: false)) {
535	if (!Args.hasFlag(Pos: options::OPT_fcoverage_mapping,
536	Neg: options::OPT_fno_coverage_mapping, Default: false))
537	D.Diag(DiagID: clang::diag::err_drv_argument_only_allowed_with)
538	<< "-fcoverage-mcdc"
539	<< "-fcoverage-mapping";
540
541	CmdArgs.push_back(Elt: "-fcoverage-mcdc");
542	}
543
544	if (Arg *A = Args.getLastArg(Ids: options::OPT_ffile_compilation_dir_EQ,
545	Ids: options::OPT_fcoverage_compilation_dir_EQ)) {
546	if (A->getOption().matches(ID: options::OPT_ffile_compilation_dir_EQ))
547	CmdArgs.push_back(Elt: Args.MakeArgString(
548	Str: Twine("-fcoverage-compilation-dir=") + A->getValue()));
549	else
550	A->render(Args, Output&: CmdArgs);
551	} else if (llvm::ErrorOr<std::string> CWD =
552	D.getVFS().getCurrentWorkingDirectory()) {
553	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fcoverage-compilation-dir=" + *CWD));
554	}
555
556	if (Args.hasArg(Ids: options::OPT_fprofile_exclude_files_EQ)) {
557	auto *Arg = Args.getLastArg(Ids: options::OPT_fprofile_exclude_files_EQ);
558	if (!Args.hasArg(Ids: options::OPT_coverage))
559	D.Diag(DiagID: clang::diag::err_drv_argument_only_allowed_with)
560	<< "-fprofile-exclude-files="
561	<< "--coverage";
562
563	StringRef v = Arg->getValue();
564	CmdArgs.push_back(
565	Elt: Args.MakeArgString(Str: Twine("-fprofile-exclude-files=" + v)));
566	}
567
568	if (Args.hasArg(Ids: options::OPT_fprofile_filter_files_EQ)) {
569	auto *Arg = Args.getLastArg(Ids: options::OPT_fprofile_filter_files_EQ);
570	if (!Args.hasArg(Ids: options::OPT_coverage))
571	D.Diag(DiagID: clang::diag::err_drv_argument_only_allowed_with)
572	<< "-fprofile-filter-files="
573	<< "--coverage";
574
575	StringRef v = Arg->getValue();
576	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-fprofile-filter-files=" + v)));
577	}
578
579	if (const auto *A = Args.getLastArg(Ids: options::OPT_fprofile_update_EQ)) {
580	StringRef Val = A->getValue();
581	if (Val == "atomic" || Val == "prefer-atomic")
582	CmdArgs.push_back(Elt: "-fprofile-update=atomic");
583	else if (Val != "single")
584	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
585	<< A->getSpelling() << Val;
586	}
587	if (const auto *A = Args.getLastArg(Ids: options::OPT_fprofile_continuous)) {
588	if (!PGOGenerateArg && !CSPGOGenerateArg && !ProfileGenerateArg)
589	D.Diag(DiagID: clang::diag::err_drv_argument_only_allowed_with)
590	<< A->getSpelling()
591	<< "-fprofile-generate, -fprofile-instr-generate, or "
592	"-fcs-profile-generate";
593	else {
594	CmdArgs.push_back(Elt: "-fprofile-continuous");
595	// Platforms that require a bias variable:
596	if (T.isOSBinFormatELF() || T.isOSAIX() || T.isOSWindows()) {
597	CmdArgs.push_back(Elt: "-mllvm");
598	CmdArgs.push_back(Elt: "-runtime-counter-relocation");
599	}
600	// -fprofile-instr-generate does not decide the profile file name in the
601	// FE, and so it does not define the filename symbol
602	// (__llvm_profile_filename). Instead, the runtime uses the name
603	// "default.profraw" for the profile file. When continuous mode is ON, we
604	// will create the filename symbol so that we can insert the "%c"
605	// modifier.
606	if (ProfileGenerateArg &&
607	(ProfileGenerateArg->getOption().matches(
608	ID: options::OPT_fprofile_instr_generate) ||
609	(ProfileGenerateArg->getOption().matches(
610	ID: options::OPT_fprofile_instr_generate_EQ) &&
611	strlen(s: ProfileGenerateArg->getValue()) == 0)))
612	CmdArgs.push_back(Elt: "-fprofile-instrument-path=default.profraw");
613	}
614	}
615
616	int FunctionGroups = 1;
617	int SelectedFunctionGroup = 0;
618	if (const auto *A = Args.getLastArg(Ids: options::OPT_fprofile_function_groups)) {
619	StringRef Val = A->getValue();
620	if (Val.getAsInteger(Radix: 0, Result&: FunctionGroups) || FunctionGroups < 1)
621	D.Diag(DiagID: diag::err_drv_invalid_int_value) << A->getAsString(Args) << Val;
622	}
623	if (const auto *A =
624	Args.getLastArg(Ids: options::OPT_fprofile_selected_function_group)) {
625	StringRef Val = A->getValue();
626	if (Val.getAsInteger(Radix: 0, Result&: SelectedFunctionGroup) ||
627	SelectedFunctionGroup < 0 || SelectedFunctionGroup >= FunctionGroups)
628	D.Diag(DiagID: diag::err_drv_invalid_int_value) << A->getAsString(Args) << Val;
629	}
630	if (FunctionGroups != 1)
631	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fprofile-function-groups=" +
632	Twine(FunctionGroups)));
633	if (SelectedFunctionGroup != 0)
634	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fprofile-selected-function-group=" +
635	Twine(SelectedFunctionGroup)));
636
637	// Leave -fprofile-dir= an unused argument unless .gcda emission is
638	// enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
639	// the flag used. There is no -fno-profile-dir, so the user has no
640	// targeted way to suppress the warning.
641	Arg *FProfileDir = nullptr;
642	if (Args.hasArg(Ids: options::OPT_fprofile_arcs) ||
643	Args.hasArg(Ids: options::OPT_coverage))
644	FProfileDir = Args.getLastArg(Ids: options::OPT_fprofile_dir);
645
646	// Put the .gcno and .gcda files (if needed) next to the primary output file,
647	// or fall back to a file in the current directory for `clang -c --coverage
648	// d/a.c` in the absence of -o.
649	if (EmitCovNotes || EmitCovData) {
650	SmallString<128> CoverageFilename;
651	if (Arg *DumpDir = Args.getLastArgNoClaim(Ids: options::OPT_dumpdir)) {
652	// Form ${dumpdir}${basename}.gcno. Note that dumpdir may not end with a
653	// path separator.
654	CoverageFilename = DumpDir->getValue();
655	CoverageFilename += llvm::sys::path::filename(path: Output.getBaseInput());
656	} else if (Arg *FinalOutput =
657	C.getArgs().getLastArg(Ids: options::OPT__SLASH_Fo)) {
658	CoverageFilename = FinalOutput->getValue();
659	} else if (Arg *FinalOutput = C.getArgs().getLastArg(Ids: options::OPT_o)) {
660	CoverageFilename = FinalOutput->getValue();
661	} else {
662	CoverageFilename = llvm::sys::path::filename(path: Output.getBaseInput());
663	}
664	if (llvm::sys::path::is_relative(path: CoverageFilename))
665	(void)D.getVFS().makeAbsolute(Path&: CoverageFilename);
666	llvm::sys::path::replace_extension(path&: CoverageFilename, extension: "gcno");
667	if (EmitCovNotes) {
668	CmdArgs.push_back(
669	Elt: Args.MakeArgString(Str: "-coverage-notes-file=" + CoverageFilename));
670	}
671
672	if (EmitCovData) {
673	if (FProfileDir) {
674	SmallString<128> Gcno = std::move(CoverageFilename);
675	CoverageFilename = FProfileDir->getValue();
676	llvm::sys::path::append(path&: CoverageFilename, a: Gcno);
677	}
678	llvm::sys::path::replace_extension(path&: CoverageFilename, extension: "gcda");
679	CmdArgs.push_back(
680	Elt: Args.MakeArgString(Str: "-coverage-data-file=" + CoverageFilename));
681	}
682	}
683	}
684
685	static void
686	RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
687	llvm::codegenoptions::DebugInfoKind DebugInfoKind,
688	unsigned DwarfVersion,
689	llvm::DebuggerKind DebuggerTuning) {
690	addDebugInfoKind(CmdArgs, DebugInfoKind);
691	if (DwarfVersion > 0)
692	CmdArgs.push_back(
693	Elt: Args.MakeArgString(Str: "-dwarf-version=" + Twine(DwarfVersion)));
694	switch (DebuggerTuning) {
695	case llvm::DebuggerKind::GDB:
696	CmdArgs.push_back(Elt: "-debugger-tuning=gdb");
697	break;
698	case llvm::DebuggerKind::LLDB:
699	CmdArgs.push_back(Elt: "-debugger-tuning=lldb");
700	break;
701	case llvm::DebuggerKind::SCE:
702	CmdArgs.push_back(Elt: "-debugger-tuning=sce");
703	break;
704	case llvm::DebuggerKind::DBX:
705	CmdArgs.push_back(Elt: "-debugger-tuning=dbx");
706	break;
707	default:
708	break;
709	}
710	}
711
712	static bool checkDebugInfoOption(const Arg *A, const ArgList &Args,
713	const Driver &D, const ToolChain &TC) {
714	assert(A && "Expected non-nullptr argument.");
715	if (TC.supportsDebugInfoOption(A))
716	return true;
717	D.Diag(DiagID: diag::warn_drv_unsupported_debug_info_opt_for_target)
718	<< A->getAsString(Args) << TC.getTripleString();
719	return false;
720	}
721
722	static void RenderDebugInfoCompressionArgs(const ArgList &Args,
723	ArgStringList &CmdArgs,
724	const Driver &D,
725	const ToolChain &TC) {
726	const Arg *A = Args.getLastArg(Ids: options::OPT_gz_EQ);
727	if (!A)
728	return;
729	if (checkDebugInfoOption(A, Args, D, TC)) {
730	StringRef Value = A->getValue();
731	if (Value == "none") {
732	CmdArgs.push_back(Elt: "--compress-debug-sections=none");
733	} else if (Value == "zlib") {
734	if (llvm::compression::zlib::isAvailable()) {
735	CmdArgs.push_back(
736	Elt: Args.MakeArgString(Str: "--compress-debug-sections=" + Twine(Value)));
737	} else {
738	D.Diag(DiagID: diag::warn_debug_compression_unavailable) << "zlib";
739	}
740	} else if (Value == "zstd") {
741	if (llvm::compression::zstd::isAvailable()) {
742	CmdArgs.push_back(
743	Elt: Args.MakeArgString(Str: "--compress-debug-sections=" + Twine(Value)));
744	} else {
745	D.Diag(DiagID: diag::warn_debug_compression_unavailable) << "zstd";
746	}
747	} else {
748	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
749	<< A->getSpelling() << Value;
750	}
751	}
752	}
753
754	static void handleAMDGPUCodeObjectVersionOptions(const Driver &D,
755	const ArgList &Args,
756	ArgStringList &CmdArgs,
757	bool IsCC1As = false) {
758	// If no version was requested by the user, use the default value from the
759	// back end. This is consistent with the value returned from
760	// getAMDGPUCodeObjectVersion. This lets clang emit IR for amdgpu without
761	// requiring the corresponding llvm to have the AMDGPU target enabled,
762	// provided the user (e.g. front end tests) can use the default.
763	if (haveAMDGPUCodeObjectVersionArgument(D, Args)) {
764	unsigned CodeObjVer = getAMDGPUCodeObjectVersion(D, Args);
765	CmdArgs.insert(I: CmdArgs.begin() + 1,
766	Elt: Args.MakeArgString(Str: Twine("--amdhsa-code-object-version=") +
767	Twine(CodeObjVer)));
768	CmdArgs.insert(I: CmdArgs.begin() + 1, Elt: "-mllvm");
769	// -cc1as does not accept -mcode-object-version option.
770	if (!IsCC1As)
771	CmdArgs.insert(I: CmdArgs.begin() + 1,
772	Elt: Args.MakeArgString(Str: Twine("-mcode-object-version=") +
773	Twine(CodeObjVer)));
774	}
775	}
776
777	static bool maybeHasClangPchSignature(const Driver &D, StringRef Path) {
778	llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MemBuf =
779	D.getVFS().getBufferForFile(Name: Path);
780	if (!MemBuf)
781	return false;
782	llvm::file_magic Magic = llvm::identify_magic(magic: (*MemBuf)->getBuffer());
783	if (Magic == llvm::file_magic::unknown)
784	return false;
785	// Return true for both raw Clang AST files and object files which may
786	// contain a __clangast section.
787	if (Magic == llvm::file_magic::clang_ast)
788	return true;
789	Expected<std::unique_ptr<llvm::object::ObjectFile>> Obj =
790	llvm::object::ObjectFile::createObjectFile(Object: **MemBuf, Type: Magic);
791	return !Obj.takeError();
792	}
793
794	static bool gchProbe(const Driver &D, StringRef Path) {
795	llvm::ErrorOr<llvm::vfs::Status> Status = D.getVFS().status(Path);
796	if (!Status)
797	return false;
798
799	if (Status->isDirectory()) {
800	std::error_code EC;
801	for (llvm::vfs::directory_iterator DI = D.getVFS().dir_begin(Dir: Path, EC), DE;
802	!EC && DI != DE; DI = DI.increment(EC)) {
803	if (maybeHasClangPchSignature(D, Path: DI->path()))
804	return true;
805	}
806	D.Diag(DiagID: diag::warn_drv_pch_ignoring_gch_dir) << Path;
807	return false;
808	}
809
810	if (maybeHasClangPchSignature(D, Path))
811	return true;
812	D.Diag(DiagID: diag::warn_drv_pch_ignoring_gch_file) << Path;
813	return false;
814	}
815
816	void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
817	const Driver &D, const ArgList &Args,
818	ArgStringList &CmdArgs,
819	const InputInfo &Output,
820	const InputInfoList &Inputs) const {
821	const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
822
823	CheckPreprocessingOptions(D, Args);
824
825	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_C);
826	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_CC);
827
828	// Handle dependency file generation.
829	Arg *ArgM = Args.getLastArg(Ids: options::OPT_MM);
830	if (!ArgM)
831	ArgM = Args.getLastArg(Ids: options::OPT_M);
832	Arg *ArgMD = Args.getLastArg(Ids: options::OPT_MMD);
833	if (!ArgMD)
834	ArgMD = Args.getLastArg(Ids: options::OPT_MD);
835
836	// -M and -MM imply -w.
837	if (ArgM)
838	CmdArgs.push_back(Elt: "-w");
839	else
840	ArgM = ArgMD;
841
842	if (ArgM) {
843	if (!JA.isDeviceOffloading(OKind: Action::OFK_HIP)) {
844	// Determine the output location.
845	const char *DepFile;
846	if (Arg *MF = Args.getLastArg(Ids: options::OPT_MF)) {
847	DepFile = MF->getValue();
848	C.addFailureResultFile(Name: DepFile, JA: &JA);
849	} else if (Output.getType() == types::TY_Dependencies) {
850	DepFile = Output.getFilename();
851	} else if (!ArgMD) {
852	DepFile = "-";
853	} else {
854	DepFile = getDependencyFileName(Args, Inputs);
855	C.addFailureResultFile(Name: DepFile, JA: &JA);
856	}
857	CmdArgs.push_back(Elt: "-dependency-file");
858	CmdArgs.push_back(Elt: DepFile);
859	}
860	// Cmake generates dependency files using all compilation options specified
861	// by users. Claim those not used for dependency files.
862	if (JA.isOffloading(OKind: Action::OFK_HIP)) {
863	Args.ClaimAllArgs(Id0: options::OPT_offload_compress);
864	Args.ClaimAllArgs(Id0: options::OPT_no_offload_compress);
865	Args.ClaimAllArgs(Id0: options::OPT_offload_jobs_EQ);
866	}
867
868	bool HasTarget = false;
869	for (const Arg *A : Args.filtered(Ids: options::OPT_MT, Ids: options::OPT_MQ)) {
870	HasTarget = true;
871	A->claim();
872	if (A->getOption().matches(ID: options::OPT_MT)) {
873	A->render(Args, Output&: CmdArgs);
874	} else {
875	CmdArgs.push_back(Elt: "-MT");
876	SmallString<128> Quoted;
877	quoteMakeTarget(Target: A->getValue(), Res&: Quoted);
878	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Quoted));
879	}
880	}
881
882	// Add a default target if one wasn't specified.
883	if (!HasTarget) {
884	const char *DepTarget;
885
886	// If user provided -o, that is the dependency target, except
887	// when we are only generating a dependency file.
888	Arg *OutputOpt = Args.getLastArg(Ids: options::OPT_o, Ids: options::OPT__SLASH_Fo);
889	if (OutputOpt && Output.getType() != types::TY_Dependencies) {
890	DepTarget = OutputOpt->getValue();
891	} else {
892	// Otherwise derive from the base input.
893	//
894	// FIXME: This should use the computed output file location.
895	SmallString<128> P(Inputs[0].getBaseInput());
896	llvm::sys::path::replace_extension(path&: P, extension: "o");
897	DepTarget = Args.MakeArgString(Str: llvm::sys::path::filename(path: P));
898	}
899
900	CmdArgs.push_back(Elt: "-MT");
901	SmallString<128> Quoted;
902	quoteMakeTarget(Target: DepTarget, Res&: Quoted);
903	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Quoted));
904	}
905
906	if (ArgM->getOption().matches(ID: options::OPT_M) ||
907	ArgM->getOption().matches(ID: options::OPT_MD))
908	CmdArgs.push_back(Elt: "-sys-header-deps");
909	if ((isa<PrecompileJobAction>(Val: JA) &&
910	!Args.hasArg(Ids: options::OPT_fno_module_file_deps)) ||
911	Args.hasArg(Ids: options::OPT_fmodule_file_deps))
912	CmdArgs.push_back(Elt: "-module-file-deps");
913	}
914
915	if (Args.hasArg(Ids: options::OPT_MG)) {
916	if (!ArgM || ArgM->getOption().matches(ID: options::OPT_MD) ||
917	ArgM->getOption().matches(ID: options::OPT_MMD))
918	D.Diag(DiagID: diag::err_drv_mg_requires_m_or_mm);
919	CmdArgs.push_back(Elt: "-MG");
920	}
921
922	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_MP);
923	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_MV);
924
925	// Add offload include arguments specific for CUDA/HIP/SYCL. This must happen
926	// before we -I or -include anything else, because we must pick up the
927	// CUDA/HIP/SYCL headers from the particular CUDA/ROCm/SYCL installation,
928	// rather than from e.g. /usr/local/include.
929	if (JA.isOffloading(OKind: Action::OFK_Cuda))
930	getToolChain().AddCudaIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
931	if (JA.isOffloading(OKind: Action::OFK_HIP))
932	getToolChain().AddHIPIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
933	if (JA.isOffloading(OKind: Action::OFK_SYCL))
934	getToolChain().addSYCLIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
935
936	// If we are offloading to a target via OpenMP we need to include the
937	// openmp_wrappers folder which contains alternative system headers.
938	if (JA.isDeviceOffloading(OKind: Action::OFK_OpenMP) &&
939	!Args.hasArg(Ids: options::OPT_nostdinc) &&
940	Args.hasFlag(Pos: options::OPT_offload_inc, Neg: options::OPT_no_offload_inc,
941	Default: true) &&
942	getToolChain().getTriple().isGPU()) {
943	if (!Args.hasArg(Ids: options::OPT_nobuiltininc)) {
944	// Add openmp_wrappers/* to our system include path. This lets us wrap
945	// standard library headers.
946	SmallString<128> P(D.ResourceDir);
947	llvm::sys::path::append(path&: P, a: "include");
948	llvm::sys::path::append(path&: P, a: "openmp_wrappers");
949	CmdArgs.push_back(Elt: "-internal-isystem");
950	CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
951	}
952
953	CmdArgs.push_back(Elt: "-include");
954	CmdArgs.push_back(Elt: "__clang_openmp_device_functions.h");
955	}
956
957	if (Args.hasArg(Ids: options::OPT_foffload_via_llvm)) {
958	// Add llvm_wrappers/* to our system include path. This lets us wrap
959	// standard library headers and other headers.
960	SmallString<128> P(D.ResourceDir);
961	llvm::sys::path::append(path&: P, a: "include", b: "llvm_offload_wrappers");
962	CmdArgs.append(IL: {"-internal-isystem", Args.MakeArgString(Str: P), "-include"});
963	if (JA.isDeviceOffloading(OKind: Action::OFK_OpenMP))
964	CmdArgs.push_back(Elt: "__llvm_offload_device.h");
965	else
966	CmdArgs.push_back(Elt: "__llvm_offload_host.h");
967	}
968
969	// Add -i* options, and automatically translate to
970	// -include-pch/-include-pth for transparent PCH support. It's
971	// wonky, but we include looking for .gch so we can support seamless
972	// replacement into a build system already set up to be generating
973	// .gch files.
974
975	if (getToolChain().getDriver().IsCLMode()) {
976	const Arg *YcArg = Args.getLastArg(Ids: options::OPT__SLASH_Yc);
977	const Arg *YuArg = Args.getLastArg(Ids: options::OPT__SLASH_Yu);
978	if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
979	JA.getKind() <= Action::AssembleJobClass) {
980	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-building-pch-with-obj"));
981	// -fpch-instantiate-templates is the default when creating
982	// precomp using /Yc
983	if (Args.hasFlag(Pos: options::OPT_fpch_instantiate_templates,
984	Neg: options::OPT_fno_pch_instantiate_templates, Default: true))
985	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fpch-instantiate-templates"));
986	}
987	if (YcArg || YuArg) {
988	StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
989	if (!isa<PrecompileJobAction>(Val: JA)) {
990	CmdArgs.push_back(Elt: "-include-pch");
991	CmdArgs.push_back(Elt: Args.MakeArgString(Str: D.GetClPchPath(
992	C, BaseName: !ThroughHeader.empty()
993	? ThroughHeader
994	: llvm::sys::path::filename(path: Inputs[0].getBaseInput()))));
995	}
996
997	if (ThroughHeader.empty()) {
998	CmdArgs.push_back(Elt: Args.MakeArgString(
999	Str: Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
1000	} else {
1001	CmdArgs.push_back(
1002	Elt: Args.MakeArgString(Str: Twine("-pch-through-header=") + ThroughHeader));
1003	}
1004	}
1005	}
1006
1007	bool RenderedImplicitInclude = false;
1008	for (const Arg *A : Args.filtered(Ids: options::OPT_clang_i_Group)) {
1009	if (A->getOption().matches(ID: options::OPT_include) &&
1010	D.getProbePrecompiled()) {
1011	// Handling of gcc-style gch precompiled headers.
1012	bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1013	RenderedImplicitInclude = true;
1014
1015	bool FoundPCH = false;
1016	SmallString<128> P(A->getValue());
1017	// We want the files to have a name like foo.h.pch. Add a dummy extension
1018	// so that replace_extension does the right thing.
1019	P += ".dummy";
1020	llvm::sys::path::replace_extension(path&: P, extension: "pch");
1021	if (D.getVFS().exists(Path: P))
1022	FoundPCH = true;
1023
1024	if (!FoundPCH) {
1025	// For GCC compat, probe for a file or directory ending in .gch instead.
1026	llvm::sys::path::replace_extension(path&: P, extension: "gch");
1027	FoundPCH = gchProbe(D, Path: P.str());
1028	}
1029
1030	if (FoundPCH) {
1031	if (IsFirstImplicitInclude) {
1032	A->claim();
1033	CmdArgs.push_back(Elt: "-include-pch");
1034	CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
1035	continue;
1036	} else {
1037	// Ignore the PCH if not first on command line and emit warning.
1038	D.Diag(DiagID: diag::warn_drv_pch_not_first_include) << P
1039	<< A->getAsString(Args);
1040	}
1041	}
1042	} else if (A->getOption().matches(ID: options::OPT_isystem_after)) {
1043	// Handling of paths which must come late. These entries are handled by
1044	// the toolchain itself after the resource dir is inserted in the right
1045	// search order.
1046	// Do not claim the argument so that the use of the argument does not
1047	// silently go unnoticed on toolchains which do not honour the option.
1048	continue;
1049	} else if (A->getOption().matches(ID: options::OPT_stdlibxx_isystem)) {
1050	// Translated to -internal-isystem by the driver, no need to pass to cc1.
1051	continue;
1052	} else if (A->getOption().matches(ID: options::OPT_ibuiltininc)) {
1053	// This is used only by the driver. No need to pass to cc1.
1054	continue;
1055	}
1056
1057	// Not translated, render as usual.
1058	A->claim();
1059	A->render(Args, Output&: CmdArgs);
1060	}
1061
1062	Args.addAllArgs(Output&: CmdArgs,
1063	Ids: {options::OPT_D, options::OPT_U, options::OPT_I_Group,
1064	options::OPT_F, options::OPT_embed_dir_EQ});
1065
1066	// Add -Wp, and -Xpreprocessor if using the preprocessor.
1067
1068	// FIXME: There is a very unfortunate problem here, some troubled
1069	// souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1070	// really support that we would have to parse and then translate
1071	// those options. :(
1072	Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wp_COMMA,
1073	Id1: options::OPT_Xpreprocessor);
1074
1075	// -I- is a deprecated GCC feature, reject it.
1076	if (Arg *A = Args.getLastArg(Ids: options::OPT_I_))
1077	D.Diag(DiagID: diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1078
1079	// If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1080	// -isysroot to the CC1 invocation.
1081	StringRef sysroot = C.getSysRoot();
1082	if (sysroot != "") {
1083	if (!Args.hasArg(Ids: options::OPT_isysroot)) {
1084	CmdArgs.push_back(Elt: "-isysroot");
1085	CmdArgs.push_back(Elt: C.getArgs().MakeArgString(Str: sysroot));
1086	}
1087	}
1088
1089	// Parse additional include paths from environment variables.
1090	// FIXME: We should probably sink the logic for handling these from the
1091	// frontend into the driver. It will allow deleting 4 otherwise unused flags.
1092	// CPATH - included following the user specified includes (but prior to
1093	// builtin and standard includes).
1094	addDirectoryList(Args, CmdArgs, ArgName: "-I", EnvVar: "CPATH");
1095	// C_INCLUDE_PATH - system includes enabled when compiling C.
1096	addDirectoryList(Args, CmdArgs, ArgName: "-c-isystem", EnvVar: "C_INCLUDE_PATH");
1097	// CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1098	addDirectoryList(Args, CmdArgs, ArgName: "-cxx-isystem", EnvVar: "CPLUS_INCLUDE_PATH");
1099	// OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1100	addDirectoryList(Args, CmdArgs, ArgName: "-objc-isystem", EnvVar: "OBJC_INCLUDE_PATH");
1101	// OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1102	addDirectoryList(Args, CmdArgs, ArgName: "-objcxx-isystem", EnvVar: "OBJCPLUS_INCLUDE_PATH");
1103
1104	// While adding the include arguments, we also attempt to retrieve the
1105	// arguments of related offloading toolchains or arguments that are specific
1106	// of an offloading programming model.
1107
1108	// Add C++ include arguments, if needed.
1109	if (types::isCXX(Id: Inputs[0].getType())) {
1110	bool HasStdlibxxIsystem = Args.hasArg(Ids: options::OPT_stdlibxx_isystem);
1111	forAllAssociatedToolChains(
1112	C, JA, RegularToolChain: getToolChain(),
1113	Work: [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {
1114	HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(DriverArgs: Args, CC1Args&: CmdArgs)
1115	: TC.AddClangCXXStdlibIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
1116	});
1117	}
1118
1119	// If we are compiling for a GPU target we want to override the system headers
1120	// with ones created by the 'libc' project if present.
1121	// TODO: This should be moved to `AddClangSystemIncludeArgs` by passing the
1122	// OffloadKind as an argument.
1123	if (!Args.hasArg(Ids: options::OPT_nostdinc) &&
1124	Args.hasFlag(Pos: options::OPT_offload_inc, Neg: options::OPT_no_offload_inc,
1125	Default: true) &&
1126	!Args.hasArg(Ids: options::OPT_nobuiltininc)) {
1127	// Without an offloading language we will include these headers directly.
1128	// Offloading languages will instead only use the declarations stored in
1129	// the resource directory at clang/lib/Headers/llvm_libc_wrappers.
1130	if (getToolChain().getTriple().isGPU() &&
1131	C.getActiveOffloadKinds() == Action::OFK_None) {
1132	SmallString<128> P(llvm::sys::path::parent_path(path: D.Dir));
1133	llvm::sys::path::append(path&: P, a: "include");
1134	llvm::sys::path::append(path&: P, a: getToolChain().getTripleString());
1135	CmdArgs.push_back(Elt: "-internal-isystem");
1136	CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
1137	} else if (C.getActiveOffloadKinds() == Action::OFK_OpenMP) {
1138	// TODO: CUDA / HIP include their own headers for some common functions
1139	// implemented here. We'll need to clean those up so they do not conflict.
1140	SmallString<128> P(D.ResourceDir);
1141	llvm::sys::path::append(path&: P, a: "include");
1142	llvm::sys::path::append(path&: P, a: "llvm_libc_wrappers");
1143	CmdArgs.push_back(Elt: "-internal-isystem");
1144	CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
1145	}
1146	}
1147
1148	// Add system include arguments for all targets but IAMCU.
1149	if (!IsIAMCU)
1150	forAllAssociatedToolChains(C, JA, RegularToolChain: getToolChain(),
1151	Work: [&Args, &CmdArgs](const ToolChain &TC) {
1152	TC.AddClangSystemIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
1153	});
1154	else {
1155	// For IAMCU add special include arguments.
1156	getToolChain().AddIAMCUIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
1157	}
1158
1159	addMacroPrefixMapArg(D, Args, CmdArgs);
1160	addCoveragePrefixMapArg(D, Args, CmdArgs);
1161
1162	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ffile_reproducible,
1163	Ids: options::OPT_fno_file_reproducible);
1164
1165	if (const char *Epoch = std::getenv(name: "SOURCE_DATE_EPOCH")) {
1166	CmdArgs.push_back(Elt: "-source-date-epoch");
1167	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Epoch));
1168	}
1169
1170	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fdefine_target_os_macros,
1171	Neg: options::OPT_fno_define_target_os_macros);
1172	}
1173
1174	// FIXME: Move to target hook.
1175	static bool isSignedCharDefault(const llvm::Triple &Triple) {
1176	switch (Triple.getArch()) {
1177	default:
1178	return true;
1179
1180	case llvm::Triple::aarch64:
1181	case llvm::Triple::aarch64_32:
1182	case llvm::Triple::aarch64_be:
1183	case llvm::Triple::arm:
1184	case llvm::Triple::armeb:
1185	case llvm::Triple::thumb:
1186	case llvm::Triple::thumbeb:
1187	if (Triple.isOSDarwin() || Triple.isOSWindows())
1188	return true;
1189	return false;
1190
1191	case llvm::Triple::ppc:
1192	case llvm::Triple::ppc64:
1193	if (Triple.isOSDarwin())
1194	return true;
1195	return false;
1196
1197	case llvm::Triple::csky:
1198	case llvm::Triple::hexagon:
1199	case llvm::Triple::msp430:
1200	case llvm::Triple::ppcle:
1201	case llvm::Triple::ppc64le:
1202	case llvm::Triple::riscv32:
1203	case llvm::Triple::riscv64:
1204	case llvm::Triple::systemz:
1205	case llvm::Triple::xcore:
1206	case llvm::Triple::xtensa:
1207	return false;
1208	}
1209	}
1210
1211	static bool hasMultipleInvocations(const llvm::Triple &Triple,
1212	const ArgList &Args) {
1213	// Supported only on Darwin where we invoke the compiler multiple times
1214	// followed by an invocation to lipo.
1215	if (!Triple.isOSDarwin())
1216	return false;
1217	// If more than one "-arch <arch>" is specified, we're targeting multiple
1218	// architectures resulting in a fat binary.
1219	return Args.getAllArgValues(Id: options::OPT_arch).size() > 1;
1220	}
1221
1222	static bool checkRemarksOptions(const Driver &D, const ArgList &Args,
1223	const llvm::Triple &Triple) {
1224	// When enabling remarks, we need to error if:
1225	// * The remark file is specified but we're targeting multiple architectures,
1226	// which means more than one remark file is being generated.
1227	bool hasMultipleInvocations = ::hasMultipleInvocations(Triple, Args);
1228	bool hasExplicitOutputFile =
1229	Args.getLastArg(Ids: options::OPT_foptimization_record_file_EQ);
1230	if (hasMultipleInvocations && hasExplicitOutputFile) {
1231	D.Diag(DiagID: diag::err_drv_invalid_output_with_multiple_archs)
1232	<< "-foptimization-record-file";
1233	return false;
1234	}
1235	return true;
1236	}
1237
1238	static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
1239	const llvm::Triple &Triple,
1240	const InputInfo &Input,
1241	const InputInfo &Output, const JobAction &JA) {
1242	StringRef Format = "yaml";
1243	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fsave_optimization_record_EQ))
1244	Format = A->getValue();
1245
1246	CmdArgs.push_back(Elt: "-opt-record-file");
1247
1248	const Arg *A = Args.getLastArg(Ids: options::OPT_foptimization_record_file_EQ);
1249	if (A) {
1250	CmdArgs.push_back(Elt: A->getValue());
1251	} else {
1252	bool hasMultipleArchs =
1253	Triple.isOSDarwin() && // Only supported on Darwin platforms.
1254	Args.getAllArgValues(Id: options::OPT_arch).size() > 1;
1255
1256	SmallString<128> F;
1257
1258	if (Args.hasArg(Ids: options::OPT_c) || Args.hasArg(Ids: options::OPT_S)) {
1259	if (Arg *FinalOutput = Args.getLastArg(Ids: options::OPT_o))
1260	F = FinalOutput->getValue();
1261	} else {
1262	if (Format != "yaml" && // For YAML, keep the original behavior.
1263	Triple.isOSDarwin() && // Enable this only on darwin, since it's the only platform supporting .dSYM bundles.
1264	Output.isFilename())
1265	F = Output.getFilename();
1266	}
1267
1268	if (F.empty()) {
1269	// Use the input filename.
1270	F = llvm::sys::path::stem(path: Input.getBaseInput());
1271
1272	// If we're compiling for an offload architecture (i.e. a CUDA device),
1273	// we need to make the file name for the device compilation different
1274	// from the host compilation.
1275	if (!JA.isDeviceOffloading(OKind: Action::OFK_None) &&
1276	!JA.isDeviceOffloading(OKind: Action::OFK_Host)) {
1277	llvm::sys::path::replace_extension(path&: F, extension: "");
1278	F += Action::GetOffloadingFileNamePrefix(Kind: JA.getOffloadingDeviceKind(),
1279	NormalizedTriple: Triple.normalize());
1280	F += "-";
1281	F += JA.getOffloadingArch();
1282	}
1283	}
1284
1285	// If we're having more than one "-arch", we should name the files
1286	// differently so that every cc1 invocation writes to a different file.
1287	// We're doing that by appending "-<arch>" with "<arch>" being the arch
1288	// name from the triple.
1289	if (hasMultipleArchs) {
1290	// First, remember the extension.
1291	SmallString<64> OldExtension = llvm::sys::path::extension(path: F);
1292	// then, remove it.
1293	llvm::sys::path::replace_extension(path&: F, extension: "");
1294	// attach -<arch> to it.
1295	F += "-";
1296	F += Triple.getArchName();
1297	// put back the extension.
1298	llvm::sys::path::replace_extension(path&: F, extension: OldExtension);
1299	}
1300
1301	SmallString<32> Extension;
1302	Extension += "opt.";
1303	Extension += Format;
1304
1305	llvm::sys::path::replace_extension(path&: F, extension: Extension);
1306	CmdArgs.push_back(Elt: Args.MakeArgString(Str: F));
1307	}
1308
1309	if (const Arg *A =
1310	Args.getLastArg(Ids: options::OPT_foptimization_record_passes_EQ)) {
1311	CmdArgs.push_back(Elt: "-opt-record-passes");
1312	CmdArgs.push_back(Elt: A->getValue());
1313	}
1314
1315	if (!Format.empty()) {
1316	CmdArgs.push_back(Elt: "-opt-record-format");
1317	CmdArgs.push_back(Elt: Format.data());
1318	}
1319	}
1320
1321	void AddAAPCSVolatileBitfieldArgs(const ArgList &Args, ArgStringList &CmdArgs) {
1322	if (!Args.hasFlag(Pos: options::OPT_faapcs_bitfield_width,
1323	Neg: options::OPT_fno_aapcs_bitfield_width, Default: true))
1324	CmdArgs.push_back(Elt: "-fno-aapcs-bitfield-width");
1325
1326	if (Args.getLastArg(Ids: options::OPT_ForceAAPCSBitfieldLoad))
1327	CmdArgs.push_back(Elt: "-faapcs-bitfield-load");
1328	}
1329
1330	namespace {
1331	void RenderARMABI(const Driver &D, const llvm::Triple &Triple,
1332	const ArgList &Args, ArgStringList &CmdArgs) {
1333	// Select the ABI to use.
1334	// FIXME: Support -meabi.
1335	// FIXME: Parts of this are duplicated in the backend, unify this somehow.
1336	const char *ABIName = nullptr;
1337	if (Arg *A = Args.getLastArg(Ids: options::OPT_mabi_EQ)) {
1338	ABIName = A->getValue();
1339	} else {
1340	std::string CPU = getCPUName(D, Args, T: Triple, /*FromAs*/ false);
1341	ABIName = llvm::ARM::computeDefaultTargetABI(TT: Triple, CPU).data();
1342	}
1343
1344	CmdArgs.push_back(Elt: "-target-abi");
1345	CmdArgs.push_back(Elt: ABIName);
1346	}
1347
1348	void AddUnalignedAccessWarning(ArgStringList &CmdArgs) {
1349	auto StrictAlignIter =
1350	llvm::find_if(Range: llvm::reverse(C&: CmdArgs), P: [](StringRef Arg) {
1351	return Arg == "+strict-align" || Arg == "-strict-align";
1352	});
1353	if (StrictAlignIter != CmdArgs.rend() &&
1354	StringRef(*StrictAlignIter) == "+strict-align")
1355	CmdArgs.push_back(Elt: "-Wunaligned-access");
1356	}
1357	}
1358
1359	// Each combination of options here forms a signing schema, and in most cases
1360	// each signing schema is its own incompatible ABI. The default values of the
1361	// options represent the default signing schema.
1362	static void handlePAuthABI(const ArgList &DriverArgs, ArgStringList &CC1Args) {
1363	if (!DriverArgs.hasArg(Ids: options::OPT_fptrauth_intrinsics,
1364	Ids: options::OPT_fno_ptrauth_intrinsics))
1365	CC1Args.push_back(Elt: "-fptrauth-intrinsics");
1366
1367	if (!DriverArgs.hasArg(Ids: options::OPT_fptrauth_calls,
1368	Ids: options::OPT_fno_ptrauth_calls))
1369	CC1Args.push_back(Elt: "-fptrauth-calls");
1370
1371	if (!DriverArgs.hasArg(Ids: options::OPT_fptrauth_returns,
1372	Ids: options::OPT_fno_ptrauth_returns))
1373	CC1Args.push_back(Elt: "-fptrauth-returns");
1374
1375	if (!DriverArgs.hasArg(Ids: options::OPT_fptrauth_auth_traps,
1376	Ids: options::OPT_fno_ptrauth_auth_traps))
1377	CC1Args.push_back(Elt: "-fptrauth-auth-traps");
1378
1379	if (!DriverArgs.hasArg(
1380	Ids: options::OPT_fptrauth_vtable_pointer_address_discrimination,
1381	Ids: options::OPT_fno_ptrauth_vtable_pointer_address_discrimination))
1382	CC1Args.push_back(Elt: "-fptrauth-vtable-pointer-address-discrimination");
1383
1384	if (!DriverArgs.hasArg(
1385	Ids: options::OPT_fptrauth_vtable_pointer_type_discrimination,
1386	Ids: options::OPT_fno_ptrauth_vtable_pointer_type_discrimination))
1387	CC1Args.push_back(Elt: "-fptrauth-vtable-pointer-type-discrimination");
1388
1389	if (!DriverArgs.hasArg(Ids: options::OPT_fptrauth_indirect_gotos,
1390	Ids: options::OPT_fno_ptrauth_indirect_gotos))
1391	CC1Args.push_back(Elt: "-fptrauth-indirect-gotos");
1392
1393	if (!DriverArgs.hasArg(Ids: options::OPT_fptrauth_init_fini,
1394	Ids: options::OPT_fno_ptrauth_init_fini))
1395	CC1Args.push_back(Elt: "-fptrauth-init-fini");
1396	}
1397
1398	static void CollectARMPACBTIOptions(const ToolChain &TC, const ArgList &Args,
1399	ArgStringList &CmdArgs, bool isAArch64) {
1400	const llvm::Triple &Triple = TC.getEffectiveTriple();
1401	const Arg *A = isAArch64
1402	? Args.getLastArg(Ids: options::OPT_msign_return_address_EQ,
1403	Ids: options::OPT_mbranch_protection_EQ)
1404	: Args.getLastArg(Ids: options::OPT_mbranch_protection_EQ);
1405	if (!A) {
1406	if (Triple.isOSOpenBSD() && isAArch64) {
1407	CmdArgs.push_back(Elt: "-msign-return-address=non-leaf");
1408	CmdArgs.push_back(Elt: "-msign-return-address-key=a_key");
1409	CmdArgs.push_back(Elt: "-mbranch-target-enforce");
1410	}
1411	return;
1412	}
1413
1414	const Driver &D = TC.getDriver();
1415	if (!(isAArch64 || (Triple.isArmT32() && Triple.isArmMClass())))
1416	D.Diag(DiagID: diag::warn_incompatible_branch_protection_option)
1417	<< Triple.getArchName();
1418
1419	StringRef Scope, Key;
1420	bool IndirectBranches, BranchProtectionPAuthLR, GuardedControlStack;
1421
1422	if (A->getOption().matches(ID: options::OPT_msign_return_address_EQ)) {
1423	Scope = A->getValue();
1424	if (Scope != "none" && Scope != "non-leaf" && Scope != "all")
1425	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
1426	<< A->getSpelling() << Scope;
1427	Key = "a_key";
1428	IndirectBranches = Triple.isOSOpenBSD() && isAArch64;
1429	BranchProtectionPAuthLR = false;
1430	GuardedControlStack = false;
1431	} else {
1432	StringRef DiagMsg;
1433	llvm::ARM::ParsedBranchProtection PBP;
1434	bool EnablePAuthLR = false;
1435
1436	// To know if we need to enable PAuth-LR As part of the standard branch
1437	// protection option, it needs to be determined if the feature has been
1438	// activated in the `march` argument. This information is stored within the
1439	// CmdArgs variable and can be found using a search.
1440	if (isAArch64) {
1441	auto isPAuthLR = [](const char *member) {
1442	llvm::AArch64::ExtensionInfo pauthlr_extension =
1443	llvm::AArch64::getExtensionByID(ExtID: llvm::AArch64::AEK_PAUTHLR);
1444	return pauthlr_extension.PosTargetFeature == member;
1445	};
1446
1447	if (llvm::any_of(Range&: CmdArgs, P: isPAuthLR))
1448	EnablePAuthLR = true;
1449	}
1450	if (!llvm::ARM::parseBranchProtection(Spec: A->getValue(), PBP, Err&: DiagMsg,
1451	EnablePAuthLR))
1452	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
1453	<< A->getSpelling() << DiagMsg;
1454	if (!isAArch64 && PBP.Key == "b_key")
1455	D.Diag(DiagID: diag::warn_unsupported_branch_protection)
1456	<< "b-key" << A->getAsString(Args);
1457	Scope = PBP.Scope;
1458	Key = PBP.Key;
1459	BranchProtectionPAuthLR = PBP.BranchProtectionPAuthLR;
1460	IndirectBranches = PBP.BranchTargetEnforcement;
1461	GuardedControlStack = PBP.GuardedControlStack;
1462	}
1463
1464	bool HasPtrauthReturns = llvm::any_of(Range&: CmdArgs, P: [](const char *Arg) {
1465	return StringRef(Arg) == "-fptrauth-returns";
1466	});
1467	// GCS is currently untested with ptrauth-returns, but enabling this could be
1468	// allowed in future after testing with a suitable system.
1469	if (HasPtrauthReturns &&
1470	(Scope != "none" || BranchProtectionPAuthLR || GuardedControlStack)) {
1471	if (Triple.getEnvironment() == llvm::Triple::PAuthTest)
1472	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
1473	<< A->getAsString(Args) << Triple.getTriple();
1474	else
1475	D.Diag(DiagID: diag::err_drv_incompatible_options)
1476	<< A->getAsString(Args) << "-fptrauth-returns";
1477	}
1478
1479	CmdArgs.push_back(
1480	Elt: Args.MakeArgString(Str: Twine("-msign-return-address=") + Scope));
1481	if (Scope != "none")
1482	CmdArgs.push_back(
1483	Elt: Args.MakeArgString(Str: Twine("-msign-return-address-key=") + Key));
1484	if (BranchProtectionPAuthLR)
1485	CmdArgs.push_back(
1486	Elt: Args.MakeArgString(Str: Twine("-mbranch-protection-pauth-lr")));
1487	if (IndirectBranches)
1488	CmdArgs.push_back(Elt: "-mbranch-target-enforce");
1489
1490	if (GuardedControlStack)
1491	CmdArgs.push_back(Elt: "-mguarded-control-stack");
1492	}
1493
1494	void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1495	ArgStringList &CmdArgs, bool KernelOrKext) const {
1496	RenderARMABI(D: getToolChain().getDriver(), Triple, Args, CmdArgs);
1497
1498	// Determine floating point ABI from the options & target defaults.
1499	arm::FloatABI ABI = arm::getARMFloatABI(TC: getToolChain(), Args);
1500	if (ABI == arm::FloatABI::Soft) {
1501	// Floating point operations and argument passing are soft.
1502	// FIXME: This changes CPP defines, we need -target-soft-float.
1503	CmdArgs.push_back(Elt: "-msoft-float");
1504	CmdArgs.push_back(Elt: "-mfloat-abi");
1505	CmdArgs.push_back(Elt: "soft");
1506	} else if (ABI == arm::FloatABI::SoftFP) {
1507	// Floating point operations are hard, but argument passing is soft.
1508	CmdArgs.push_back(Elt: "-mfloat-abi");
1509	CmdArgs.push_back(Elt: "soft");
1510	} else {
1511	// Floating point operations and argument passing are hard.
1512	assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1513	CmdArgs.push_back(Elt: "-mfloat-abi");
1514	CmdArgs.push_back(Elt: "hard");
1515	}
1516
1517	// Forward the -mglobal-merge option for explicit control over the pass.
1518	if (Arg *A = Args.getLastArg(Ids: options::OPT_mglobal_merge,
1519	Ids: options::OPT_mno_global_merge)) {
1520	CmdArgs.push_back(Elt: "-mllvm");
1521	if (A->getOption().matches(ID: options::OPT_mno_global_merge))
1522	CmdArgs.push_back(Elt: "-arm-global-merge=false");
1523	else
1524	CmdArgs.push_back(Elt: "-arm-global-merge=true");
1525	}
1526
1527	if (!Args.hasFlag(Pos: options::OPT_mimplicit_float,
1528	Neg: options::OPT_mno_implicit_float, Default: true))
1529	CmdArgs.push_back(Elt: "-no-implicit-float");
1530
1531	if (Args.getLastArg(Ids: options::OPT_mcmse))
1532	CmdArgs.push_back(Elt: "-mcmse");
1533
1534	AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1535
1536	// Enable/disable return address signing and indirect branch targets.
1537	CollectARMPACBTIOptions(TC: getToolChain(), Args, CmdArgs, isAArch64: false /*isAArch64*/);
1538
1539	AddUnalignedAccessWarning(CmdArgs);
1540	}
1541
1542	void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1543	const ArgList &Args, bool KernelOrKext,
1544	ArgStringList &CmdArgs) const {
1545	const ToolChain &TC = getToolChain();
1546
1547	// Add the target features
1548	getTargetFeatures(D: TC.getDriver(), Triple: EffectiveTriple, Args, CmdArgs, ForAS: false);
1549
1550	// Add target specific flags.
1551	switch (TC.getArch()) {
1552	default:
1553	break;
1554
1555	case llvm::Triple::arm:
1556	case llvm::Triple::armeb:
1557	case llvm::Triple::thumb:
1558	case llvm::Triple::thumbeb:
1559	// Use the effective triple, which takes into account the deployment target.
1560	AddARMTargetArgs(Triple: EffectiveTriple, Args, CmdArgs, KernelOrKext);
1561	break;
1562
1563	case llvm::Triple::aarch64:
1564	case llvm::Triple::aarch64_32:
1565	case llvm::Triple::aarch64_be:
1566	AddAArch64TargetArgs(Args, CmdArgs);
1567	break;
1568
1569	case llvm::Triple::loongarch32:
1570	case llvm::Triple::loongarch64:
1571	AddLoongArchTargetArgs(Args, CmdArgs);
1572	break;
1573
1574	case llvm::Triple::mips:
1575	case llvm::Triple::mipsel:
1576	case llvm::Triple::mips64:
1577	case llvm::Triple::mips64el:
1578	AddMIPSTargetArgs(Args, CmdArgs);
1579	break;
1580
1581	case llvm::Triple::ppc:
1582	case llvm::Triple::ppcle:
1583	case llvm::Triple::ppc64:
1584	case llvm::Triple::ppc64le:
1585	AddPPCTargetArgs(Args, CmdArgs);
1586	break;
1587
1588	case llvm::Triple::riscv32:
1589	case llvm::Triple::riscv64:
1590	AddRISCVTargetArgs(Args, CmdArgs);
1591	break;
1592
1593	case llvm::Triple::sparc:
1594	case llvm::Triple::sparcel:
1595	case llvm::Triple::sparcv9:
1596	AddSparcTargetArgs(Args, CmdArgs);
1597	break;
1598
1599	case llvm::Triple::systemz:
1600	AddSystemZTargetArgs(Args, CmdArgs);
1601	break;
1602
1603	case llvm::Triple::x86:
1604	case llvm::Triple::x86_64:
1605	AddX86TargetArgs(Args, CmdArgs);
1606	break;
1607
1608	case llvm::Triple::lanai:
1609	AddLanaiTargetArgs(Args, CmdArgs);
1610	break;
1611
1612	case llvm::Triple::hexagon:
1613	AddHexagonTargetArgs(Args, CmdArgs);
1614	break;
1615
1616	case llvm::Triple::wasm32:
1617	case llvm::Triple::wasm64:
1618	AddWebAssemblyTargetArgs(Args, CmdArgs);
1619	break;
1620
1621	case llvm::Triple::ve:
1622	AddVETargetArgs(Args, CmdArgs);
1623	break;
1624	}
1625	}
1626
1627	namespace {
1628	void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1629	ArgStringList &CmdArgs) {
1630	const char *ABIName = nullptr;
1631	if (Arg *A = Args.getLastArg(Ids: options::OPT_mabi_EQ))
1632	ABIName = A->getValue();
1633	else if (Triple.isOSDarwin())
1634	ABIName = "darwinpcs";
1635	else if (Triple.getEnvironment() == llvm::Triple::PAuthTest)
1636	ABIName = "pauthtest";
1637	else
1638	ABIName = "aapcs";
1639
1640	CmdArgs.push_back(Elt: "-target-abi");
1641	CmdArgs.push_back(Elt: ABIName);
1642	}
1643	}
1644
1645	void Clang::AddAArch64TargetArgs(const ArgList &Args,
1646	ArgStringList &CmdArgs) const {
1647	const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1648
1649	if (!Args.hasFlag(Pos: options::OPT_mred_zone, Neg: options::OPT_mno_red_zone, Default: true) ||
1650	Args.hasArg(Ids: options::OPT_mkernel) ||
1651	Args.hasArg(Ids: options::OPT_fapple_kext))
1652	CmdArgs.push_back(Elt: "-disable-red-zone");
1653
1654	if (!Args.hasFlag(Pos: options::OPT_mimplicit_float,
1655	Neg: options::OPT_mno_implicit_float, Default: true))
1656	CmdArgs.push_back(Elt: "-no-implicit-float");
1657
1658	RenderAArch64ABI(Triple, Args, CmdArgs);
1659
1660	// Forward the -mglobal-merge option for explicit control over the pass.
1661	if (Arg *A = Args.getLastArg(Ids: options::OPT_mglobal_merge,
1662	Ids: options::OPT_mno_global_merge)) {
1663	CmdArgs.push_back(Elt: "-mllvm");
1664	if (A->getOption().matches(ID: options::OPT_mno_global_merge))
1665	CmdArgs.push_back(Elt: "-aarch64-enable-global-merge=false");
1666	else
1667	CmdArgs.push_back(Elt: "-aarch64-enable-global-merge=true");
1668	}
1669
1670	// Handle -msve_vector_bits=<bits>
1671	auto HandleVectorBits = [&](Arg *A, StringRef VScaleMin,
1672	StringRef VScaleMax) {
1673	StringRef Val = A->getValue();
1674	const Driver &D = getToolChain().getDriver();
1675	if (Val == "128" || Val == "256" || Val == "512" || Val == "1024" ||
1676	Val == "2048" || Val == "128+" || Val == "256+" || Val == "512+" ||
1677	Val == "1024+" || Val == "2048+") {
1678	unsigned Bits = 0;
1679	if (!Val.consume_back(Suffix: "+")) {
1680	bool Invalid = Val.getAsInteger(Radix: 10, Result&: Bits);
1681	(void)Invalid;
1682	assert(!Invalid && "Failed to parse value");
1683	CmdArgs.push_back(
1684	Elt: Args.MakeArgString(Str: VScaleMax + llvm::Twine(Bits / 128)));
1685	}
1686
1687	bool Invalid = Val.getAsInteger(Radix: 10, Result&: Bits);
1688	(void)Invalid;
1689	assert(!Invalid && "Failed to parse value");
1690
1691	CmdArgs.push_back(
1692	Elt: Args.MakeArgString(Str: VScaleMin + llvm::Twine(Bits / 128)));
1693	} else if (Val == "scalable") {
1694	// Silently drop requests for vector-length agnostic code as it's implied.
1695	} else {
1696	// Handle the unsupported values passed to msve-vector-bits.
1697	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
1698	<< A->getSpelling() << Val;
1699	}
1700	};
1701	if (Arg *A = Args.getLastArg(Ids: options::OPT_msve_vector_bits_EQ))
1702	HandleVectorBits(A, "-mvscale-min=", "-mvscale-max=");
1703	if (Arg *A = Args.getLastArg(Ids: options::OPT_msve_streaming_vector_bits_EQ))
1704	HandleVectorBits(A, "-mvscale-streaming-min=", "-mvscale-streaming-max=");
1705
1706	AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1707
1708	if (const Arg *A = Args.getLastArg(Ids: clang::driver::options::OPT_mtune_EQ)) {
1709	CmdArgs.push_back(Elt: "-tune-cpu");
1710	if (strcmp(s1: A->getValue(), s2: "native") == 0)
1711	CmdArgs.push_back(Elt: Args.MakeArgString(Str: llvm::sys::getHostCPUName()));
1712	else
1713	CmdArgs.push_back(Elt: A->getValue());
1714	}
1715
1716	AddUnalignedAccessWarning(CmdArgs);
1717
1718	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_intrinsics,
1719	Neg: options::OPT_fno_ptrauth_intrinsics);
1720	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_calls,
1721	Neg: options::OPT_fno_ptrauth_calls);
1722	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_returns,
1723	Neg: options::OPT_fno_ptrauth_returns);
1724	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_auth_traps,
1725	Neg: options::OPT_fno_ptrauth_auth_traps);
1726	Args.addOptInFlag(
1727	Output&: CmdArgs, Pos: options::OPT_fptrauth_vtable_pointer_address_discrimination,
1728	Neg: options::OPT_fno_ptrauth_vtable_pointer_address_discrimination);
1729	Args.addOptInFlag(
1730	Output&: CmdArgs, Pos: options::OPT_fptrauth_vtable_pointer_type_discrimination,
1731	Neg: options::OPT_fno_ptrauth_vtable_pointer_type_discrimination);
1732	Args.addOptInFlag(
1733	Output&: CmdArgs, Pos: options::OPT_fptrauth_type_info_vtable_pointer_discrimination,
1734	Neg: options::OPT_fno_ptrauth_type_info_vtable_pointer_discrimination);
1735	Args.addOptInFlag(
1736	Output&: CmdArgs, Pos: options::OPT_fptrauth_function_pointer_type_discrimination,
1737	Neg: options::OPT_fno_ptrauth_function_pointer_type_discrimination);
1738
1739	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_indirect_gotos,
1740	Neg: options::OPT_fno_ptrauth_indirect_gotos);
1741	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_init_fini,
1742	Neg: options::OPT_fno_ptrauth_init_fini);
1743	Args.addOptInFlag(Output&: CmdArgs,
1744	Pos: options::OPT_fptrauth_init_fini_address_discrimination,
1745	Neg: options::OPT_fno_ptrauth_init_fini_address_discrimination);
1746	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_faarch64_jump_table_hardening,
1747	Neg: options::OPT_fno_aarch64_jump_table_hardening);
1748
1749	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_objc_isa,
1750	Neg: options::OPT_fno_ptrauth_objc_isa);
1751	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_objc_interface_sel,
1752	Neg: options::OPT_fno_ptrauth_objc_interface_sel);
1753	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fptrauth_objc_class_ro,
1754	Neg: options::OPT_fno_ptrauth_objc_class_ro);
1755	if (Triple.getEnvironment() == llvm::Triple::PAuthTest)
1756	handlePAuthABI(DriverArgs: Args, CC1Args&: CmdArgs);
1757
1758	// Enable/disable return address signing and indirect branch targets.
1759	CollectARMPACBTIOptions(TC: getToolChain(), Args, CmdArgs, isAArch64: true /*isAArch64*/);
1760	}
1761
1762	void Clang::AddLoongArchTargetArgs(const ArgList &Args,
1763	ArgStringList &CmdArgs) const {
1764	const llvm::Triple &Triple = getToolChain().getTriple();
1765
1766	CmdArgs.push_back(Elt: "-target-abi");
1767	CmdArgs.push_back(
1768	Elt: loongarch::getLoongArchABI(D: getToolChain().getDriver(), Args, Triple)
1769	.data());
1770
1771	// Handle -mtune.
1772	if (const Arg *A = Args.getLastArg(Ids: options::OPT_mtune_EQ)) {
1773	std::string TuneCPU = A->getValue();
1774	TuneCPU = loongarch::postProcessTargetCPUString(CPU: TuneCPU, Triple);
1775	CmdArgs.push_back(Elt: "-tune-cpu");
1776	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TuneCPU));
1777	}
1778
1779	if (Arg *A = Args.getLastArg(Ids: options::OPT_mannotate_tablejump,
1780	Ids: options::OPT_mno_annotate_tablejump)) {
1781	if (A->getOption().matches(ID: options::OPT_mannotate_tablejump)) {
1782	CmdArgs.push_back(Elt: "-mllvm");
1783	CmdArgs.push_back(Elt: "-loongarch-annotate-tablejump");
1784	}
1785	}
1786	}
1787
1788	void Clang::AddMIPSTargetArgs(const ArgList &Args,
1789	ArgStringList &CmdArgs) const {
1790	const Driver &D = getToolChain().getDriver();
1791	StringRef CPUName;
1792	StringRef ABIName;
1793	const llvm::Triple &Triple = getToolChain().getTriple();
1794	mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1795
1796	CmdArgs.push_back(Elt: "-target-abi");
1797	CmdArgs.push_back(Elt: ABIName.data());
1798
1799	mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);
1800	if (ABI == mips::FloatABI::Soft) {
1801	// Floating point operations and argument passing are soft.
1802	CmdArgs.push_back(Elt: "-msoft-float");
1803	CmdArgs.push_back(Elt: "-mfloat-abi");
1804	CmdArgs.push_back(Elt: "soft");
1805	} else {
1806	// Floating point operations and argument passing are hard.
1807	assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1808	CmdArgs.push_back(Elt: "-mfloat-abi");
1809	CmdArgs.push_back(Elt: "hard");
1810	}
1811
1812	if (Arg *A = Args.getLastArg(Ids: options::OPT_mldc1_sdc1,
1813	Ids: options::OPT_mno_ldc1_sdc1)) {
1814	if (A->getOption().matches(ID: options::OPT_mno_ldc1_sdc1)) {
1815	CmdArgs.push_back(Elt: "-mllvm");
1816	CmdArgs.push_back(Elt: "-mno-ldc1-sdc1");
1817	}
1818	}
1819
1820	if (Arg *A = Args.getLastArg(Ids: options::OPT_mcheck_zero_division,
1821	Ids: options::OPT_mno_check_zero_division)) {
1822	if (A->getOption().matches(ID: options::OPT_mno_check_zero_division)) {
1823	CmdArgs.push_back(Elt: "-mllvm");
1824	CmdArgs.push_back(Elt: "-mno-check-zero-division");
1825	}
1826	}
1827
1828	if (Args.getLastArg(Ids: options::OPT_mfix4300)) {
1829	CmdArgs.push_back(Elt: "-mllvm");
1830	CmdArgs.push_back(Elt: "-mfix4300");
1831	}
1832
1833	if (Arg *A = Args.getLastArg(Ids: options::OPT_G)) {
1834	StringRef v = A->getValue();
1835	CmdArgs.push_back(Elt: "-mllvm");
1836	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mips-ssection-threshold=" + v));
1837	A->claim();
1838	}
1839
1840	Arg *GPOpt = Args.getLastArg(Ids: options::OPT_mgpopt, Ids: options::OPT_mno_gpopt);
1841	Arg *ABICalls =
1842	Args.getLastArg(Ids: options::OPT_mabicalls, Ids: options::OPT_mno_abicalls);
1843
1844	// -mabicalls is the default for many MIPS environments, even with -fno-pic.
1845	// -mgpopt is the default for static, -fno-pic environments but these two
1846	// options conflict. We want to be certain that -mno-abicalls -mgpopt is
1847	// the only case where -mllvm -mgpopt is passed.
1848	// NOTE: We need a warning here or in the backend to warn when -mgpopt is
1849	// passed explicitly when compiling something with -mabicalls
1850	// (implictly) in affect. Currently the warning is in the backend.
1851	//
1852	// When the ABI in use is N64, we also need to determine the PIC mode that
1853	// is in use, as -fno-pic for N64 implies -mno-abicalls.
1854	bool NoABICalls =
1855	ABICalls && ABICalls->getOption().matches(ID: options::OPT_mno_abicalls);
1856
1857	llvm::Reloc::Model RelocationModel;
1858	unsigned PICLevel;
1859	bool IsPIE;
1860	std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
1861	ParsePICArgs(ToolChain: getToolChain(), Args);
1862
1863	NoABICalls = NoABICalls ||
1864	(RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1865
1866	bool WantGPOpt = GPOpt && GPOpt->getOption().matches(ID: options::OPT_mgpopt);
1867	// We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1868	if (NoABICalls && (!GPOpt || WantGPOpt)) {
1869	CmdArgs.push_back(Elt: "-mllvm");
1870	CmdArgs.push_back(Elt: "-mgpopt");
1871
1872	Arg *LocalSData = Args.getLastArg(Ids: options::OPT_mlocal_sdata,
1873	Ids: options::OPT_mno_local_sdata);
1874	Arg *ExternSData = Args.getLastArg(Ids: options::OPT_mextern_sdata,
1875	Ids: options::OPT_mno_extern_sdata);
1876	Arg *EmbeddedData = Args.getLastArg(Ids: options::OPT_membedded_data,
1877	Ids: options::OPT_mno_embedded_data);
1878	if (LocalSData) {
1879	CmdArgs.push_back(Elt: "-mllvm");
1880	if (LocalSData->getOption().matches(ID: options::OPT_mlocal_sdata)) {
1881	CmdArgs.push_back(Elt: "-mlocal-sdata=1");
1882	} else {
1883	CmdArgs.push_back(Elt: "-mlocal-sdata=0");
1884	}
1885	LocalSData->claim();
1886	}
1887
1888	if (ExternSData) {
1889	CmdArgs.push_back(Elt: "-mllvm");
1890	if (ExternSData->getOption().matches(ID: options::OPT_mextern_sdata)) {
1891	CmdArgs.push_back(Elt: "-mextern-sdata=1");
1892	} else {
1893	CmdArgs.push_back(Elt: "-mextern-sdata=0");
1894	}
1895	ExternSData->claim();
1896	}
1897
1898	if (EmbeddedData) {
1899	CmdArgs.push_back(Elt: "-mllvm");
1900	if (EmbeddedData->getOption().matches(ID: options::OPT_membedded_data)) {
1901	CmdArgs.push_back(Elt: "-membedded-data=1");
1902	} else {
1903	CmdArgs.push_back(Elt: "-membedded-data=0");
1904	}
1905	EmbeddedData->claim();
1906	}
1907
1908	} else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1909	D.Diag(DiagID: diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1910
1911	if (GPOpt)
1912	GPOpt->claim();
1913
1914	if (Arg *A = Args.getLastArg(Ids: options::OPT_mcompact_branches_EQ)) {
1915	StringRef Val = StringRef(A->getValue());
1916	if (mips::hasCompactBranches(CPU&: CPUName)) {
1917	if (Val == "never" || Val == "always" || Val == "optimal") {
1918	CmdArgs.push_back(Elt: "-mllvm");
1919	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mips-compact-branches=" + Val));
1920	} else
1921	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
1922	<< A->getSpelling() << Val;
1923	} else
1924	D.Diag(DiagID: diag::warn_target_unsupported_compact_branches) << CPUName;
1925	}
1926
1927	if (Arg *A = Args.getLastArg(Ids: options::OPT_mrelax_pic_calls,
1928	Ids: options::OPT_mno_relax_pic_calls)) {
1929	if (A->getOption().matches(ID: options::OPT_mno_relax_pic_calls)) {
1930	CmdArgs.push_back(Elt: "-mllvm");
1931	CmdArgs.push_back(Elt: "-mips-jalr-reloc=0");
1932	}
1933	}
1934	}
1935
1936	void Clang::AddPPCTargetArgs(const ArgList &Args,
1937	ArgStringList &CmdArgs) const {
1938	const Driver &D = getToolChain().getDriver();
1939	const llvm::Triple &T = getToolChain().getTriple();
1940	if (Arg *A = Args.getLastArg(Ids: options::OPT_mtune_EQ)) {
1941	CmdArgs.push_back(Elt: "-tune-cpu");
1942	StringRef CPU = llvm::PPC::getNormalizedPPCTuneCPU(T, CPUName: A->getValue());
1943	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPU.str()));
1944	}
1945
1946	// Select the ABI to use.
1947	const char *ABIName = nullptr;
1948	if (T.isOSBinFormatELF()) {
1949	switch (getToolChain().getArch()) {
1950	case llvm::Triple::ppc64: {
1951	if (T.isPPC64ELFv2ABI())
1952	ABIName = "elfv2";
1953	else
1954	ABIName = "elfv1";
1955	break;
1956	}
1957	case llvm::Triple::ppc64le:
1958	ABIName = "elfv2";
1959	break;
1960	default:
1961	break;
1962	}
1963	}
1964
1965	bool IEEELongDouble = getToolChain().defaultToIEEELongDouble();
1966	bool VecExtabi = false;
1967	for (const Arg *A : Args.filtered(Ids: options::OPT_mabi_EQ)) {
1968	StringRef V = A->getValue();
1969	if (V == "ieeelongdouble") {
1970	IEEELongDouble = true;
1971	A->claim();
1972	} else if (V == "ibmlongdouble") {
1973	IEEELongDouble = false;
1974	A->claim();
1975	} else if (V == "vec-default") {
1976	VecExtabi = false;
1977	A->claim();
1978	} else if (V == "vec-extabi") {
1979	VecExtabi = true;
1980	A->claim();
1981	} else if (V == "elfv1") {
1982	ABIName = "elfv1";
1983	A->claim();
1984	} else if (V == "elfv2") {
1985	ABIName = "elfv2";
1986	A->claim();
1987	} else if (V != "altivec")
1988	// The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1989	// the option if given as we don't have backend support for any targets
1990	// that don't use the altivec abi.
1991	ABIName = A->getValue();
1992	}
1993	if (IEEELongDouble)
1994	CmdArgs.push_back(Elt: "-mabi=ieeelongdouble");
1995	if (VecExtabi) {
1996	if (!T.isOSAIX())
1997	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
1998	<< "-mabi=vec-extabi" << T.str();
1999	CmdArgs.push_back(Elt: "-mabi=vec-extabi");
2000	}
2001
2002	if (!Args.hasFlag(Pos: options::OPT_mred_zone, Neg: options::OPT_mno_red_zone, Default: true))
2003	CmdArgs.push_back(Elt: "-disable-red-zone");
2004
2005	ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);
2006	if (FloatABI == ppc::FloatABI::Soft) {
2007	// Floating point operations and argument passing are soft.
2008	CmdArgs.push_back(Elt: "-msoft-float");
2009	CmdArgs.push_back(Elt: "-mfloat-abi");
2010	CmdArgs.push_back(Elt: "soft");
2011	} else {
2012	// Floating point operations and argument passing are hard.
2013	assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
2014	CmdArgs.push_back(Elt: "-mfloat-abi");
2015	CmdArgs.push_back(Elt: "hard");
2016	}
2017
2018	if (ABIName) {
2019	CmdArgs.push_back(Elt: "-target-abi");
2020	CmdArgs.push_back(Elt: ABIName);
2021	}
2022	}
2023
2024	void Clang::AddRISCVTargetArgs(const ArgList &Args,
2025	ArgStringList &CmdArgs) const {
2026	const llvm::Triple &Triple = getToolChain().getTriple();
2027	StringRef ABIName = riscv::getRISCVABI(Args, Triple);
2028
2029	CmdArgs.push_back(Elt: "-target-abi");
2030	CmdArgs.push_back(Elt: ABIName.data());
2031
2032	if (Arg *A = Args.getLastArg(Ids: options::OPT_G)) {
2033	CmdArgs.push_back(Elt: "-msmall-data-limit");
2034	CmdArgs.push_back(Elt: A->getValue());
2035	}
2036
2037	if (!Args.hasFlag(Pos: options::OPT_mimplicit_float,
2038	Neg: options::OPT_mno_implicit_float, Default: true))
2039	CmdArgs.push_back(Elt: "-no-implicit-float");
2040
2041	if (const Arg *A = Args.getLastArg(Ids: options::OPT_mtune_EQ)) {
2042	CmdArgs.push_back(Elt: "-tune-cpu");
2043	if (strcmp(s1: A->getValue(), s2: "native") == 0)
2044	CmdArgs.push_back(Elt: Args.MakeArgString(Str: llvm::sys::getHostCPUName()));
2045	else
2046	CmdArgs.push_back(Elt: A->getValue());
2047	}
2048
2049	// Handle -mrvv-vector-bits=<bits>
2050	if (Arg *A = Args.getLastArg(Ids: options::OPT_mrvv_vector_bits_EQ)) {
2051	StringRef Val = A->getValue();
2052	const Driver &D = getToolChain().getDriver();
2053
2054	// Get minimum VLen from march.
2055	unsigned MinVLen = 0;
2056	std::string Arch = riscv::getRISCVArch(Args, Triple);
2057	auto ISAInfo = llvm::RISCVISAInfo::parseArchString(
2058	Arch, /*EnableExperimentalExtensions*/ EnableExperimentalExtension: true);
2059	// Ignore parsing error.
2060	if (!errorToBool(Err: ISAInfo.takeError()))
2061	MinVLen = (*ISAInfo)->getMinVLen();
2062
2063	// If the value is "zvl", use MinVLen from march. Otherwise, try to parse
2064	// as integer as long as we have a MinVLen.
2065	unsigned Bits = 0;
2066	if (Val == "zvl" && MinVLen >= llvm::RISCV::RVVBitsPerBlock) {
2067	Bits = MinVLen;
2068	} else if (!Val.getAsInteger(Radix: 10, Result&: Bits)) {
2069	// Only accept power of 2 values beteen RVVBitsPerBlock and 65536 that
2070	// at least MinVLen.
2071	if (Bits < MinVLen || Bits < llvm::RISCV::RVVBitsPerBlock ||
2072	Bits > 65536 || !llvm::isPowerOf2_32(Value: Bits))
2073	Bits = 0;
2074	}
2075
2076	// If we got a valid value try to use it.
2077	if (Bits != 0) {
2078	unsigned VScaleMin = Bits / llvm::RISCV::RVVBitsPerBlock;
2079	CmdArgs.push_back(
2080	Elt: Args.MakeArgString(Str: "-mvscale-max=" + llvm::Twine(VScaleMin)));
2081	CmdArgs.push_back(
2082	Elt: Args.MakeArgString(Str: "-mvscale-min=" + llvm::Twine(VScaleMin)));
2083	} else if (Val != "scalable") {
2084	// Handle the unsupported values passed to mrvv-vector-bits.
2085	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
2086	<< A->getSpelling() << Val;
2087	}
2088	}
2089	}
2090
2091	void Clang::AddSparcTargetArgs(const ArgList &Args,
2092	ArgStringList &CmdArgs) const {
2093	sparc::FloatABI FloatABI =
2094	sparc::getSparcFloatABI(D: getToolChain().getDriver(), Args);
2095
2096	if (FloatABI == sparc::FloatABI::Soft) {
2097	// Floating point operations and argument passing are soft.
2098	CmdArgs.push_back(Elt: "-msoft-float");
2099	CmdArgs.push_back(Elt: "-mfloat-abi");
2100	CmdArgs.push_back(Elt: "soft");
2101	} else {
2102	// Floating point operations and argument passing are hard.
2103	assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
2104	CmdArgs.push_back(Elt: "-mfloat-abi");
2105	CmdArgs.push_back(Elt: "hard");
2106	}
2107
2108	if (const Arg *A = Args.getLastArg(Ids: clang::driver::options::OPT_mtune_EQ)) {
2109	StringRef Name = A->getValue();
2110	std::string TuneCPU;
2111	if (Name == "native")
2112	TuneCPU = std::string(llvm::sys::getHostCPUName());
2113	else
2114	TuneCPU = std::string(Name);
2115
2116	CmdArgs.push_back(Elt: "-tune-cpu");
2117	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TuneCPU));
2118	}
2119	}
2120
2121	void Clang::AddSystemZTargetArgs(const ArgList &Args,
2122	ArgStringList &CmdArgs) const {
2123	if (const Arg *A = Args.getLastArg(Ids: options::OPT_mtune_EQ)) {
2124	CmdArgs.push_back(Elt: "-tune-cpu");
2125	if (strcmp(s1: A->getValue(), s2: "native") == 0)
2126	CmdArgs.push_back(Elt: Args.MakeArgString(Str: llvm::sys::getHostCPUName()));
2127	else
2128	CmdArgs.push_back(Elt: A->getValue());
2129	}
2130
2131	bool HasBackchain =
2132	Args.hasFlag(Pos: options::OPT_mbackchain, Neg: options::OPT_mno_backchain, Default: false);
2133	bool HasPackedStack = Args.hasFlag(Pos: options::OPT_mpacked_stack,
2134	Neg: options::OPT_mno_packed_stack, Default: false);
2135	systemz::FloatABI FloatABI =
2136	systemz::getSystemZFloatABI(D: getToolChain().getDriver(), Args);
2137	bool HasSoftFloat = (FloatABI == systemz::FloatABI::Soft);
2138	if (HasBackchain && HasPackedStack && !HasSoftFloat) {
2139	const Driver &D = getToolChain().getDriver();
2140	D.Diag(DiagID: diag::err_drv_unsupported_opt)
2141	<< "-mpacked-stack -mbackchain -mhard-float";
2142	}
2143	if (HasBackchain)
2144	CmdArgs.push_back(Elt: "-mbackchain");
2145	if (HasPackedStack)
2146	CmdArgs.push_back(Elt: "-mpacked-stack");
2147	if (HasSoftFloat) {
2148	// Floating point operations and argument passing are soft.
2149	CmdArgs.push_back(Elt: "-msoft-float");
2150	CmdArgs.push_back(Elt: "-mfloat-abi");
2151	CmdArgs.push_back(Elt: "soft");
2152	}
2153	}
2154
2155	void Clang::AddX86TargetArgs(const ArgList &Args,
2156	ArgStringList &CmdArgs) const {
2157	const Driver &D = getToolChain().getDriver();
2158	addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/false);
2159
2160	if (!Args.hasFlag(Pos: options::OPT_mred_zone, Neg: options::OPT_mno_red_zone, Default: true) ||
2161	Args.hasArg(Ids: options::OPT_mkernel) ||
2162	Args.hasArg(Ids: options::OPT_fapple_kext))
2163	CmdArgs.push_back(Elt: "-disable-red-zone");
2164
2165	if (!Args.hasFlag(Pos: options::OPT_mtls_direct_seg_refs,
2166	Neg: options::OPT_mno_tls_direct_seg_refs, Default: true))
2167	CmdArgs.push_back(Elt: "-mno-tls-direct-seg-refs");
2168
2169	// Default to avoid implicit floating-point for kernel/kext code, but allow
2170	// that to be overridden with -mno-soft-float.
2171	bool NoImplicitFloat = (Args.hasArg(Ids: options::OPT_mkernel) ||
2172	Args.hasArg(Ids: options::OPT_fapple_kext));
2173	if (Arg *A = Args.getLastArg(
2174	Ids: options::OPT_msoft_float, Ids: options::OPT_mno_soft_float,
2175	Ids: options::OPT_mimplicit_float, Ids: options::OPT_mno_implicit_float)) {
2176	const Option &O = A->getOption();
2177	NoImplicitFloat = (O.matches(ID: options::OPT_mno_implicit_float) ||
2178	O.matches(ID: options::OPT_msoft_float));
2179	}
2180	if (NoImplicitFloat)
2181	CmdArgs.push_back(Elt: "-no-implicit-float");
2182
2183	if (Arg *A = Args.getLastArg(Ids: options::OPT_masm_EQ)) {
2184	StringRef Value = A->getValue();
2185	if (Value == "intel" || Value == "att") {
2186	CmdArgs.push_back(Elt: "-mllvm");
2187	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-x86-asm-syntax=" + Value));
2188	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-inline-asm=" + Value));
2189	} else {
2190	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
2191	<< A->getSpelling() << Value;
2192	}
2193	} else if (D.IsCLMode()) {
2194	CmdArgs.push_back(Elt: "-mllvm");
2195	CmdArgs.push_back(Elt: "-x86-asm-syntax=intel");
2196	}
2197
2198	if (Arg *A = Args.getLastArg(Ids: options::OPT_mskip_rax_setup,
2199	Ids: options::OPT_mno_skip_rax_setup))
2200	if (A->getOption().matches(ID: options::OPT_mskip_rax_setup))
2201	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mskip-rax-setup"));
2202
2203	// Set flags to support MCU ABI.
2204	if (Args.hasFlag(Pos: options::OPT_miamcu, Neg: options::OPT_mno_iamcu, Default: false)) {
2205	CmdArgs.push_back(Elt: "-mfloat-abi");
2206	CmdArgs.push_back(Elt: "soft");
2207	CmdArgs.push_back(Elt: "-mstack-alignment=4");
2208	}
2209
2210	// Handle -mtune.
2211
2212	// Default to "generic" unless -march is present or targetting the PS4/PS5.
2213	std::string TuneCPU;
2214	if (!Args.hasArg(Ids: clang::driver::options::OPT_march_EQ) &&
2215	!getToolChain().getTriple().isPS())
2216	TuneCPU = "generic";
2217
2218	// Override based on -mtune.
2219	if (const Arg *A = Args.getLastArg(Ids: clang::driver::options::OPT_mtune_EQ)) {
2220	StringRef Name = A->getValue();
2221
2222	if (Name == "native") {
2223	Name = llvm::sys::getHostCPUName();
2224	if (!Name.empty())
2225	TuneCPU = std::string(Name);
2226	} else
2227	TuneCPU = std::string(Name);
2228	}
2229
2230	if (!TuneCPU.empty()) {
2231	CmdArgs.push_back(Elt: "-tune-cpu");
2232	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TuneCPU));
2233	}
2234	}
2235
2236	void Clang::AddHexagonTargetArgs(const ArgList &Args,
2237	ArgStringList &CmdArgs) const {
2238	CmdArgs.push_back(Elt: "-mqdsp6-compat");
2239	CmdArgs.push_back(Elt: "-Wreturn-type");
2240
2241	if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
2242	CmdArgs.push_back(Elt: "-mllvm");
2243	CmdArgs.push_back(
2244	Elt: Args.MakeArgString(Str: "-hexagon-small-data-threshold=" + Twine(*G)));
2245	}
2246
2247	if (!Args.hasArg(Ids: options::OPT_fno_short_enums))
2248	CmdArgs.push_back(Elt: "-fshort-enums");
2249	if (Args.getLastArg(Ids: options::OPT_mieee_rnd_near)) {
2250	CmdArgs.push_back(Elt: "-mllvm");
2251	CmdArgs.push_back(Elt: "-enable-hexagon-ieee-rnd-near");
2252	}
2253	CmdArgs.push_back(Elt: "-mllvm");
2254	CmdArgs.push_back(Elt: "-machine-sink-split=0");
2255	}
2256
2257	void Clang::AddLanaiTargetArgs(const ArgList &Args,
2258	ArgStringList &CmdArgs) const {
2259	if (Arg *A = Args.getLastArg(Ids: options::OPT_mcpu_EQ)) {
2260	StringRef CPUName = A->getValue();
2261
2262	CmdArgs.push_back(Elt: "-target-cpu");
2263	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPUName));
2264	}
2265	if (Arg *A = Args.getLastArg(Ids: options::OPT_mregparm_EQ)) {
2266	StringRef Value = A->getValue();
2267	// Only support mregparm=4 to support old usage. Report error for all other
2268	// cases.
2269	int Mregparm;
2270	if (Value.getAsInteger(Radix: 10, Result&: Mregparm)) {
2271	if (Mregparm != 4) {
2272	getToolChain().getDriver().Diag(
2273	DiagID: diag::err_drv_unsupported_option_argument)
2274	<< A->getSpelling() << Value;
2275	}
2276	}
2277	}
2278	}
2279
2280	void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
2281	ArgStringList &CmdArgs) const {
2282	// Default to "hidden" visibility.
2283	if (!Args.hasArg(Ids: options::OPT_fvisibility_EQ,
2284	Ids: options::OPT_fvisibility_ms_compat))
2285	CmdArgs.push_back(Elt: "-fvisibility=hidden");
2286	}
2287
2288	void Clang::AddVETargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const {
2289	// Floating point operations and argument passing are hard.
2290	CmdArgs.push_back(Elt: "-mfloat-abi");
2291	CmdArgs.push_back(Elt: "hard");
2292	}
2293
2294	void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
2295	StringRef Target, const InputInfo &Output,
2296	const InputInfo &Input, const ArgList &Args) const {
2297	// If this is a dry run, do not create the compilation database file.
2298	if (C.getArgs().hasArg(Ids: options::OPT__HASH_HASH_HASH))
2299	return;
2300
2301	using llvm::yaml::escape;
2302	const Driver &D = getToolChain().getDriver();
2303
2304	if (!CompilationDatabase) {
2305	std::error_code EC;
2306	auto File = std::make_unique<llvm::raw_fd_ostream>(
2307	args&: Filename, args&: EC,
2308	args: llvm::sys::fs::OF_TextWithCRLF | llvm::sys::fs::OF_Append);
2309	if (EC) {
2310	D.Diag(DiagID: clang::diag::err_drv_compilationdatabase) << Filename
2311	<< EC.message();
2312	return;
2313	}
2314	CompilationDatabase = std::move(File);
2315	}
2316	auto &CDB = *CompilationDatabase;
2317	auto CWD = D.getVFS().getCurrentWorkingDirectory();
2318	if (!CWD)
2319	CWD = ".";
2320	CDB << "{ \"directory\": \"" << escape(Input: *CWD) << "\"";
2321	CDB << ", \"file\": \"" << escape(Input: Input.getFilename()) << "\"";
2322	if (Output.isFilename())
2323	CDB << ", \"output\": \"" << escape(Input: Output.getFilename()) << "\"";
2324	CDB << ", \"arguments\": [\"" << escape(Input: D.ClangExecutable) << "\"";
2325	SmallString<128> Buf;
2326	Buf = "-x";
2327	Buf += types::getTypeName(Id: Input.getType());
2328	CDB << ", \"" << escape(Input: Buf) << "\"";
2329	if (!D.SysRoot.empty() && !Args.hasArg(Ids: options::OPT__sysroot_EQ)) {
2330	Buf = "--sysroot=";
2331	Buf += D.SysRoot;
2332	CDB << ", \"" << escape(Input: Buf) << "\"";
2333	}
2334	CDB << ", \"" << escape(Input: Input.getFilename()) << "\"";
2335	if (Output.isFilename())
2336	CDB << ", \"-o\", \"" << escape(Input: Output.getFilename()) << "\"";
2337	for (auto &A: Args) {
2338	auto &O = A->getOption();
2339	// Skip language selection, which is positional.
2340	if (O.getID() == options::OPT_x)
2341	continue;
2342	// Skip writing dependency output and the compilation database itself.
2343	if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2344	continue;
2345	if (O.getID() == options::OPT_gen_cdb_fragment_path)
2346	continue;
2347	// Skip inputs.
2348	if (O.getKind() == Option::InputClass)
2349	continue;
2350	// Skip output.
2351	if (O.getID() == options::OPT_o)
2352	continue;
2353	// All other arguments are quoted and appended.
2354	ArgStringList ASL;
2355	A->render(Args, Output&: ASL);
2356	for (auto &it: ASL)
2357	CDB << ", \"" << escape(Input: it) << "\"";
2358	}
2359	Buf = "--target=";
2360	Buf += Target;
2361	CDB << ", \"" << escape(Input: Buf) << "\"]},\n";
2362	}
2363
2364	void Clang::DumpCompilationDatabaseFragmentToDir(
2365	StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,
2366	const InputInfo &Input, const llvm::opt::ArgList &Args) const {
2367	// If this is a dry run, do not create the compilation database file.
2368	if (C.getArgs().hasArg(Ids: options::OPT__HASH_HASH_HASH))
2369	return;
2370
2371	if (CompilationDatabase)
2372	DumpCompilationDatabase(C, Filename: "", Target, Output, Input, Args);
2373
2374	SmallString<256> Path = Dir;
2375	const auto &Driver = C.getDriver();
2376	Driver.getVFS().makeAbsolute(Path);
2377	auto Err = llvm::sys::fs::create_directory(path: Path, /*IgnoreExisting=*/true);
2378	if (Err) {
2379	Driver.Diag(DiagID: diag::err_drv_compilationdatabase) << Dir << Err.message();
2380	return;
2381	}
2382
2383	llvm::sys::path::append(
2384	path&: Path,
2385	a: Twine(llvm::sys::path::filename(path: Input.getFilename())) + ".%%%%.json");
2386	int FD;
2387	SmallString<256> TempPath;
2388	Err = llvm::sys::fs::createUniqueFile(Model: Path, ResultFD&: FD, ResultPath&: TempPath,
2389	Flags: llvm::sys::fs::OF_Text);
2390	if (Err) {
2391	Driver.Diag(DiagID: diag::err_drv_compilationdatabase) << Path << Err.message();
2392	return;
2393	}
2394	CompilationDatabase =
2395	std::make_unique<llvm::raw_fd_ostream>(args&: FD, /*shouldClose=*/args: true);
2396	DumpCompilationDatabase(C, Filename: "", Target, Output, Input, Args);
2397	}
2398
2399	static bool CheckARMImplicitITArg(StringRef Value) {
2400	return Value == "always" || Value == "never" || Value == "arm" ||
2401	Value == "thumb";
2402	}
2403
2404	static void AddARMImplicitITArgs(const ArgList &Args, ArgStringList &CmdArgs,
2405	StringRef Value) {
2406	CmdArgs.push_back(Elt: "-mllvm");
2407	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-arm-implicit-it=" + Value));
2408	}
2409
2410	static void CollectArgsForIntegratedAssembler(Compilation &C,
2411	const ArgList &Args,
2412	ArgStringList &CmdArgs,
2413	const Driver &D) {
2414	// Default to -mno-relax-all.
2415	//
2416	// Note: RISC-V requires an indirect jump for offsets larger than 1MiB. This
2417	// cannot be done by assembler branch relaxation as it needs a free temporary
2418	// register. Because of this, branch relaxation is handled by a MachineIR pass
2419	// before the assembler. Forcing assembler branch relaxation for -O0 makes the
2420	// MachineIR branch relaxation inaccurate and it will miss cases where an
2421	// indirect branch is necessary.
2422	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_mrelax_all,
2423	Neg: options::OPT_mno_relax_all);
2424
2425	// Only default to -mincremental-linker-compatible if we think we are
2426	// targeting the MSVC linker.
2427	bool DefaultIncrementalLinkerCompatible =
2428	C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2429	if (Args.hasFlag(Pos: options::OPT_mincremental_linker_compatible,
2430	Neg: options::OPT_mno_incremental_linker_compatible,
2431	Default: DefaultIncrementalLinkerCompatible))
2432	CmdArgs.push_back(Elt: "-mincremental-linker-compatible");
2433
2434	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_femit_dwarf_unwind_EQ);
2435
2436	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_femit_compact_unwind_non_canonical,
2437	Neg: options::OPT_fno_emit_compact_unwind_non_canonical);
2438
2439	// If you add more args here, also add them to the block below that
2440	// starts with "// If CollectArgsForIntegratedAssembler() isn't called below".
2441
2442	// When passing -I arguments to the assembler we sometimes need to
2443	// unconditionally take the next argument. For example, when parsing
2444	// '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2445	// -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2446	// arg after parsing the '-I' arg.
2447	bool TakeNextArg = false;
2448
2449	const llvm::Triple &Triple = C.getDefaultToolChain().getTriple();
2450	bool IsELF = Triple.isOSBinFormatELF();
2451	bool Crel = false, ExperimentalCrel = false;
2452	bool ImplicitMapSyms = false;
2453	bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2454	bool UseNoExecStack = false;
2455	bool Msa = false;
2456	const char *MipsTargetFeature = nullptr;
2457	llvm::SmallVector<const char *> SparcTargetFeatures;
2458	StringRef ImplicitIt;
2459	for (const Arg *A :
2460	Args.filtered(Ids: options::OPT_Wa_COMMA, Ids: options::OPT_Xassembler,
2461	Ids: options::OPT_mimplicit_it_EQ)) {
2462	A->claim();
2463
2464	if (A->getOption().getID() == options::OPT_mimplicit_it_EQ) {
2465	switch (C.getDefaultToolChain().getArch()) {
2466	case llvm::Triple::arm:
2467	case llvm::Triple::armeb:
2468	case llvm::Triple::thumb:
2469	case llvm::Triple::thumbeb:
2470	// Only store the value; the last value set takes effect.
2471	ImplicitIt = A->getValue();
2472	if (!CheckARMImplicitITArg(Value: ImplicitIt))
2473	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
2474	<< A->getSpelling() << ImplicitIt;
2475	continue;
2476	default:
2477	break;
2478	}
2479	}
2480
2481	for (StringRef Value : A->getValues()) {
2482	if (TakeNextArg) {
2483	CmdArgs.push_back(Elt: Value.data());
2484	TakeNextArg = false;
2485	continue;
2486	}
2487
2488	if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2489	Value == "-mbig-obj")
2490	continue; // LLVM handles bigobj automatically
2491
2492	auto Equal = Value.split(Separator: '=');
2493	auto checkArg = [&](bool ValidTarget,
2494	std::initializer_list<const char *> Set) {
2495	if (!ValidTarget) {
2496	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
2497	<< (Twine("-Wa,") + Equal.first + "=").str()
2498	<< Triple.getTriple();
2499	} else if (!llvm::is_contained(Set, Element: Equal.second)) {
2500	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
2501	<< (Twine("-Wa,") + Equal.first + "=").str() << Equal.second;
2502	}
2503	};
2504	switch (C.getDefaultToolChain().getArch()) {
2505	default:
2506	break;
2507	case llvm::Triple::x86:
2508	case llvm::Triple::x86_64:
2509	if (Equal.first == "-mrelax-relocations" ||
2510	Equal.first == "--mrelax-relocations") {
2511	UseRelaxRelocations = Equal.second == "yes";
2512	checkArg(IsELF, {"yes", "no"});
2513	continue;
2514	}
2515	if (Value == "-msse2avx") {
2516	CmdArgs.push_back(Elt: "-msse2avx");
2517	continue;
2518	}
2519	break;
2520	case llvm::Triple::wasm32:
2521	case llvm::Triple::wasm64:
2522	if (Value == "--no-type-check") {
2523	CmdArgs.push_back(Elt: "-mno-type-check");
2524	continue;
2525	}
2526	break;
2527	case llvm::Triple::thumb:
2528	case llvm::Triple::thumbeb:
2529	case llvm::Triple::arm:
2530	case llvm::Triple::armeb:
2531	if (Equal.first == "-mimplicit-it") {
2532	// Only store the value; the last value set takes effect.
2533	ImplicitIt = Equal.second;
2534	checkArg(true, {"always", "never", "arm", "thumb"});
2535	continue;
2536	}
2537	if (Value == "-mthumb")
2538	// -mthumb has already been processed in ComputeLLVMTriple()
2539	// recognize but skip over here.
2540	continue;
2541	break;
2542	case llvm::Triple::aarch64:
2543	case llvm::Triple::aarch64_be:
2544	case llvm::Triple::aarch64_32:
2545	if (Equal.first == "-mmapsyms") {
2546	ImplicitMapSyms = Equal.second == "implicit";
2547	checkArg(IsELF, {"default", "implicit"});
2548	continue;
2549	}
2550	break;
2551	case llvm::Triple::mips:
2552	case llvm::Triple::mipsel:
2553	case llvm::Triple::mips64:
2554	case llvm::Triple::mips64el:
2555	if (Value == "--trap") {
2556	CmdArgs.push_back(Elt: "-target-feature");
2557	CmdArgs.push_back(Elt: "+use-tcc-in-div");
2558	continue;
2559	}
2560	if (Value == "--break") {
2561	CmdArgs.push_back(Elt: "-target-feature");
2562	CmdArgs.push_back(Elt: "-use-tcc-in-div");
2563	continue;
2564	}
2565	if (Value.starts_with(Prefix: "-msoft-float")) {
2566	CmdArgs.push_back(Elt: "-target-feature");
2567	CmdArgs.push_back(Elt: "+soft-float");
2568	continue;
2569	}
2570	if (Value.starts_with(Prefix: "-mhard-float")) {
2571	CmdArgs.push_back(Elt: "-target-feature");
2572	CmdArgs.push_back(Elt: "-soft-float");
2573	continue;
2574	}
2575	if (Value == "-mmsa") {
2576	Msa = true;
2577	continue;
2578	}
2579	if (Value == "-mno-msa") {
2580	Msa = false;
2581	continue;
2582	}
2583	MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2584	.Case(S: "-mips1", Value: "+mips1")
2585	.Case(S: "-mips2", Value: "+mips2")
2586	.Case(S: "-mips3", Value: "+mips3")
2587	.Case(S: "-mips4", Value: "+mips4")
2588	.Case(S: "-mips5", Value: "+mips5")
2589	.Case(S: "-mips32", Value: "+mips32")
2590	.Case(S: "-mips32r2", Value: "+mips32r2")
2591	.Case(S: "-mips32r3", Value: "+mips32r3")
2592	.Case(S: "-mips32r5", Value: "+mips32r5")
2593	.Case(S: "-mips32r6", Value: "+mips32r6")
2594	.Case(S: "-mips64", Value: "+mips64")
2595	.Case(S: "-mips64r2", Value: "+mips64r2")
2596	.Case(S: "-mips64r3", Value: "+mips64r3")
2597	.Case(S: "-mips64r5", Value: "+mips64r5")
2598	.Case(S: "-mips64r6", Value: "+mips64r6")
2599	.Default(Value: nullptr);
2600	if (MipsTargetFeature)
2601	continue;
2602	break;
2603
2604	case llvm::Triple::sparc:
2605	case llvm::Triple::sparcel:
2606	case llvm::Triple::sparcv9:
2607	if (Value == "--undeclared-regs") {
2608	// LLVM already allows undeclared use of G registers, so this option
2609	// becomes a no-op. This solely exists for GNU compatibility.
2610	// TODO implement --no-undeclared-regs
2611	continue;
2612	}
2613	SparcTargetFeatures =
2614	llvm::StringSwitch<llvm::SmallVector<const char *>>(Value)
2615	.Case(S: "-Av8", Value: {"-v8plus"})
2616	.Case(S: "-Av8plus", Value: {"+v8plus", "+v9"})
2617	.Case(S: "-Av8plusa", Value: {"+v8plus", "+v9", "+vis"})
2618	.Case(S: "-Av8plusb", Value: {"+v8plus", "+v9", "+vis", "+vis2"})
2619	.Case(S: "-Av8plusd", Value: {"+v8plus", "+v9", "+vis", "+vis2", "+vis3"})
2620	.Case(S: "-Av9", Value: {"+v9"})
2621	.Case(S: "-Av9a", Value: {"+v9", "+vis"})
2622	.Case(S: "-Av9b", Value: {"+v9", "+vis", "+vis2"})
2623	.Case(S: "-Av9d", Value: {"+v9", "+vis", "+vis2", "+vis3"})
2624	.Default(Value: {});
2625	if (!SparcTargetFeatures.empty())
2626	continue;
2627	break;
2628	}
2629
2630	if (Value == "-force_cpusubtype_ALL") {
2631	// Do nothing, this is the default and we don't support anything else.
2632	} else if (Value == "-L") {
2633	CmdArgs.push_back(Elt: "-msave-temp-labels");
2634	} else if (Value == "--fatal-warnings") {
2635	CmdArgs.push_back(Elt: "-massembler-fatal-warnings");
2636	} else if (Value == "--no-warn" || Value == "-W") {
2637	CmdArgs.push_back(Elt: "-massembler-no-warn");
2638	} else if (Value == "--noexecstack") {
2639	UseNoExecStack = true;
2640	} else if (Value.starts_with(Prefix: "-compress-debug-sections") ||
2641	Value.starts_with(Prefix: "--compress-debug-sections") ||
2642	Value == "-nocompress-debug-sections" ||
2643	Value == "--nocompress-debug-sections") {
2644	CmdArgs.push_back(Elt: Value.data());
2645	} else if (Value == "--crel") {
2646	Crel = true;
2647	} else if (Value == "--no-crel") {
2648	Crel = false;
2649	} else if (Value == "--allow-experimental-crel") {
2650	ExperimentalCrel = true;
2651	} else if (Value.starts_with(Prefix: "-I")) {
2652	CmdArgs.push_back(Elt: Value.data());
2653	// We need to consume the next argument if the current arg is a plain
2654	// -I. The next arg will be the include directory.
2655	if (Value == "-I")
2656	TakeNextArg = true;
2657	} else if (Value.starts_with(Prefix: "-gdwarf-")) {
2658	// "-gdwarf-N" options are not cc1as options.
2659	unsigned DwarfVersion = DwarfVersionNum(ArgValue: Value);
2660	if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2661	CmdArgs.push_back(Elt: Value.data());
2662	} else {
2663	RenderDebugEnablingArgs(Args, CmdArgs,
2664	DebugInfoKind: llvm::codegenoptions::DebugInfoConstructor,
2665	DwarfVersion, DebuggerTuning: llvm::DebuggerKind::Default);
2666	}
2667	} else if (Value.starts_with(Prefix: "-mcpu") || Value.starts_with(Prefix: "-mfpu") ||
2668	Value.starts_with(Prefix: "-mhwdiv") || Value.starts_with(Prefix: "-march")) {
2669	// Do nothing, we'll validate it later.
2670	} else if (Value == "-defsym" || Value == "--defsym") {
2671	if (A->getNumValues() != 2) {
2672	D.Diag(DiagID: diag::err_drv_defsym_invalid_format) << Value;
2673	break;
2674	}
2675	const char *S = A->getValue(N: 1);
2676	auto Pair = StringRef(S).split(Separator: '=');
2677	auto Sym = Pair.first;
2678	auto SVal = Pair.second;
2679
2680	if (Sym.empty() || SVal.empty()) {
2681	D.Diag(DiagID: diag::err_drv_defsym_invalid_format) << S;
2682	break;
2683	}
2684	int64_t IVal;
2685	if (SVal.getAsInteger(Radix: 0, Result&: IVal)) {
2686	D.Diag(DiagID: diag::err_drv_defsym_invalid_symval) << SVal;
2687	break;
2688	}
2689	CmdArgs.push_back(Elt: "--defsym");
2690	TakeNextArg = true;
2691	} else if (Value == "-fdebug-compilation-dir") {
2692	CmdArgs.push_back(Elt: "-fdebug-compilation-dir");
2693	TakeNextArg = true;
2694	} else if (Value.consume_front(Prefix: "-fdebug-compilation-dir=")) {
2695	// The flag is a -Wa / -Xassembler argument and Options doesn't
2696	// parse the argument, so this isn't automatically aliased to
2697	// -fdebug-compilation-dir (without '=') here.
2698	CmdArgs.push_back(Elt: "-fdebug-compilation-dir");
2699	CmdArgs.push_back(Elt: Value.data());
2700	} else if (Value == "--version") {
2701	D.PrintVersion(C, OS&: llvm::outs());
2702	} else {
2703	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
2704	<< A->getSpelling() << Value;
2705	}
2706	}
2707	}
2708	if (ImplicitIt.size())
2709	AddARMImplicitITArgs(Args, CmdArgs, Value: ImplicitIt);
2710	if (Crel) {
2711	if (!ExperimentalCrel)
2712	D.Diag(DiagID: diag::err_drv_experimental_crel);
2713	if (Triple.isOSBinFormatELF() && !Triple.isMIPS()) {
2714	CmdArgs.push_back(Elt: "--crel");
2715	} else {
2716	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
2717	<< "-Wa,--crel" << D.getTargetTriple();
2718	}
2719	}
2720	if (ImplicitMapSyms)
2721	CmdArgs.push_back(Elt: "-mmapsyms=implicit");
2722	if (Msa)
2723	CmdArgs.push_back(Elt: "-mmsa");
2724	if (!UseRelaxRelocations)
2725	CmdArgs.push_back(Elt: "-mrelax-relocations=no");
2726	if (UseNoExecStack)
2727	CmdArgs.push_back(Elt: "-mnoexecstack");
2728	if (MipsTargetFeature != nullptr) {
2729	CmdArgs.push_back(Elt: "-target-feature");
2730	CmdArgs.push_back(Elt: MipsTargetFeature);
2731	}
2732
2733	for (const char *Feature : SparcTargetFeatures) {
2734	CmdArgs.push_back(Elt: "-target-feature");
2735	CmdArgs.push_back(Elt: Feature);
2736	}
2737
2738	// forward -fembed-bitcode to assmebler
2739	if (C.getDriver().embedBitcodeEnabled() ||
2740	C.getDriver().embedBitcodeMarkerOnly())
2741	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fembed_bitcode_EQ);
2742
2743	if (const char *AsSecureLogFile = getenv(name: "AS_SECURE_LOG_FILE")) {
2744	CmdArgs.push_back(Elt: "-as-secure-log-file");
2745	CmdArgs.push_back(Elt: Args.MakeArgString(Str: AsSecureLogFile));
2746	}
2747	}
2748
2749	static std::string ComplexArithmeticStr(LangOptions::ComplexRangeKind Range) {
2750	return (Range == LangOptions::ComplexRangeKind::CX_None)
2751	? ""
2752	: "-fcomplex-arithmetic=" + complexRangeKindToStr(Range);
2753	}
2754
2755	static void EmitComplexRangeDiag(const Driver &D, std::string str1,
2756	std::string str2) {
2757	if (str1 != str2 && !str2.empty() && !str1.empty()) {
2758	D.Diag(DiagID: clang::diag::warn_drv_overriding_option) << str1 << str2;
2759	}
2760	}
2761
2762	static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2763	bool OFastEnabled, const ArgList &Args,
2764	ArgStringList &CmdArgs,
2765	const JobAction &JA) {
2766	// List of veclibs which when used with -fveclib imply -fno-math-errno.
2767	constexpr std::array VecLibImpliesNoMathErrno{llvm::StringLiteral("ArmPL"),
2768	llvm::StringLiteral("SLEEF")};
2769	bool NoMathErrnoWasImpliedByVecLib = false;
2770	const Arg *VecLibArg = nullptr;
2771	// Track the arg (if any) that enabled errno after -fveclib for diagnostics.
2772	const Arg *ArgThatEnabledMathErrnoAfterVecLib = nullptr;
2773
2774	// Handle various floating point optimization flags, mapping them to the
2775	// appropriate LLVM code generation flags. This is complicated by several
2776	// "umbrella" flags, so we do this by stepping through the flags incrementally
2777	// adjusting what we think is enabled/disabled, then at the end setting the
2778	// LLVM flags based on the final state.
2779	bool HonorINFs = true;
2780	bool HonorNaNs = true;
2781	bool ApproxFunc = false;
2782	// -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2783	bool MathErrno = TC.IsMathErrnoDefault();
2784	bool AssociativeMath = false;
2785	bool ReciprocalMath = false;
2786	bool SignedZeros = true;
2787	bool TrappingMath = false; // Implemented via -ffp-exception-behavior
2788	bool TrappingMathPresent = false; // Is trapping-math in args, and not
2789	// overriden by ffp-exception-behavior?
2790	bool RoundingFPMath = false;
2791	// -ffp-model values: strict, fast, precise
2792	StringRef FPModel = "";
2793	// -ffp-exception-behavior options: strict, maytrap, ignore
2794	StringRef FPExceptionBehavior = "";
2795	// -ffp-eval-method options: double, extended, source
2796	StringRef FPEvalMethod = "";
2797	llvm::DenormalMode DenormalFPMath =
2798	TC.getDefaultDenormalModeForType(DriverArgs: Args, JA);
2799	llvm::DenormalMode DenormalFP32Math =
2800	TC.getDefaultDenormalModeForType(DriverArgs: Args, JA, FPType: &llvm::APFloat::IEEEsingle());
2801
2802	// CUDA and HIP don't rely on the frontend to pass an ffp-contract option.
2803	// If one wasn't given by the user, don't pass it here.
2804	StringRef FPContract;
2805	StringRef LastSeenFfpContractOption;
2806	StringRef LastFpContractOverrideOption;
2807	bool SeenUnsafeMathModeOption = false;
2808	if (!JA.isDeviceOffloading(OKind: Action::OFK_Cuda) &&
2809	!JA.isOffloading(OKind: Action::OFK_HIP))
2810	FPContract = "on";
2811	bool StrictFPModel = false;
2812	StringRef Float16ExcessPrecision = "";
2813	StringRef BFloat16ExcessPrecision = "";
2814	LangOptions::ComplexRangeKind Range = LangOptions::ComplexRangeKind::CX_None;
2815	std::string ComplexRangeStr;
2816	std::string GccRangeComplexOption;
2817	std::string LastComplexRangeOption;
2818
2819	auto setComplexRange = [&](LangOptions::ComplexRangeKind NewRange) {
2820	// Warn if user expects to perform full implementation of complex
2821	// multiplication or division in the presence of nnan or ninf flags.
2822	if (Range != NewRange)
2823	EmitComplexRangeDiag(D,
2824	str1: !GccRangeComplexOption.empty()
2825	? GccRangeComplexOption
2826	: ComplexArithmeticStr(Range),
2827	str2: ComplexArithmeticStr(Range: NewRange));
2828	Range = NewRange;
2829	};
2830
2831	// Lambda to set fast-math options. This is also used by -ffp-model=fast
2832	auto applyFastMath = [&](bool Aggressive) {
2833	if (Aggressive) {
2834	HonorINFs = false;
2835	HonorNaNs = false;
2836	setComplexRange(LangOptions::ComplexRangeKind::CX_Basic);
2837	} else {
2838	HonorINFs = true;
2839	HonorNaNs = true;
2840	setComplexRange(LangOptions::ComplexRangeKind::CX_Promoted);
2841	}
2842	MathErrno = false;
2843	AssociativeMath = true;
2844	ReciprocalMath = true;
2845	ApproxFunc = true;
2846	SignedZeros = false;
2847	TrappingMath = false;
2848	RoundingFPMath = false;
2849	FPExceptionBehavior = "";
2850	FPContract = "fast";
2851	SeenUnsafeMathModeOption = true;
2852	};
2853
2854	// Lambda to consolidate common handling for fp-contract
2855	auto restoreFPContractState = [&]() {
2856	// CUDA and HIP don't rely on the frontend to pass an ffp-contract option.
2857	// For other targets, if the state has been changed by one of the
2858	// unsafe-math umbrella options a subsequent -fno-fast-math or
2859	// -fno-unsafe-math-optimizations option reverts to the last value seen for
2860	// the -ffp-contract option or "on" if we have not seen the -ffp-contract
2861	// option. If we have not seen an unsafe-math option or -ffp-contract,
2862	// we leave the FPContract state unchanged.
2863	if (!JA.isDeviceOffloading(OKind: Action::OFK_Cuda) &&
2864	!JA.isOffloading(OKind: Action::OFK_HIP)) {
2865	if (LastSeenFfpContractOption != "")
2866	FPContract = LastSeenFfpContractOption;
2867	else if (SeenUnsafeMathModeOption)
2868	FPContract = "on";
2869	}
2870	// In this case, we're reverting to the last explicit fp-contract option
2871	// or the platform default
2872	LastFpContractOverrideOption = "";
2873	};
2874
2875	if (const Arg *A = Args.getLastArg(Ids: options::OPT_flimited_precision_EQ)) {
2876	CmdArgs.push_back(Elt: "-mlimit-float-precision");
2877	CmdArgs.push_back(Elt: A->getValue());
2878	}
2879
2880	for (const Arg *A : Args) {
2881	auto CheckMathErrnoForVecLib =
2882	llvm::make_scope_exit(F: [&, MathErrnoBeforeArg = MathErrno] {
2883	if (NoMathErrnoWasImpliedByVecLib && !MathErrnoBeforeArg && MathErrno)
2884	ArgThatEnabledMathErrnoAfterVecLib = A;
2885	});
2886
2887	switch (A->getOption().getID()) {
2888	// If this isn't an FP option skip the claim below
2889	default: continue;
2890
2891	case options::OPT_fcx_limited_range:
2892	if (GccRangeComplexOption.empty()) {
2893	if (Range != LangOptions::ComplexRangeKind::CX_Basic)
2894	EmitComplexRangeDiag(D, str1: renderComplexRangeOption(Range),
2895	str2: "-fcx-limited-range");
2896	} else {
2897	if (GccRangeComplexOption != "-fno-cx-limited-range")
2898	EmitComplexRangeDiag(D, str1: GccRangeComplexOption, str2: "-fcx-limited-range");
2899	}
2900	GccRangeComplexOption = "-fcx-limited-range";
2901	LastComplexRangeOption = A->getSpelling();
2902	Range = LangOptions::ComplexRangeKind::CX_Basic;
2903	break;
2904	case options::OPT_fno_cx_limited_range:
2905	if (GccRangeComplexOption.empty()) {
2906	EmitComplexRangeDiag(D, str1: renderComplexRangeOption(Range),
2907	str2: "-fno-cx-limited-range");
2908	} else {
2909	if (GccRangeComplexOption != "-fcx-limited-range" &&
2910	GccRangeComplexOption != "-fno-cx-fortran-rules")
2911	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2912	str2: "-fno-cx-limited-range");
2913	}
2914	GccRangeComplexOption = "-fno-cx-limited-range";
2915	LastComplexRangeOption = A->getSpelling();
2916	Range = LangOptions::ComplexRangeKind::CX_Full;
2917	break;
2918	case options::OPT_fcx_fortran_rules:
2919	if (GccRangeComplexOption.empty())
2920	EmitComplexRangeDiag(D, str1: renderComplexRangeOption(Range),
2921	str2: "-fcx-fortran-rules");
2922	else
2923	EmitComplexRangeDiag(D, str1: GccRangeComplexOption, str2: "-fcx-fortran-rules");
2924	GccRangeComplexOption = "-fcx-fortran-rules";
2925	LastComplexRangeOption = A->getSpelling();
2926	Range = LangOptions::ComplexRangeKind::CX_Improved;
2927	break;
2928	case options::OPT_fno_cx_fortran_rules:
2929	if (GccRangeComplexOption.empty()) {
2930	EmitComplexRangeDiag(D, str1: renderComplexRangeOption(Range),
2931	str2: "-fno-cx-fortran-rules");
2932	} else {
2933	if (GccRangeComplexOption != "-fno-cx-limited-range")
2934	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2935	str2: "-fno-cx-fortran-rules");
2936	}
2937	GccRangeComplexOption = "-fno-cx-fortran-rules";
2938	LastComplexRangeOption = A->getSpelling();
2939	Range = LangOptions::ComplexRangeKind::CX_Full;
2940	break;
2941	case options::OPT_fcomplex_arithmetic_EQ: {
2942	LangOptions::ComplexRangeKind RangeVal;
2943	StringRef Val = A->getValue();
2944	if (Val == "full")
2945	RangeVal = LangOptions::ComplexRangeKind::CX_Full;
2946	else if (Val == "improved")
2947	RangeVal = LangOptions::ComplexRangeKind::CX_Improved;
2948	else if (Val == "promoted")
2949	RangeVal = LangOptions::ComplexRangeKind::CX_Promoted;
2950	else if (Val == "basic")
2951	RangeVal = LangOptions::ComplexRangeKind::CX_Basic;
2952	else {
2953	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
2954	<< A->getSpelling() << Val;
2955	break;
2956	}
2957	if (!GccRangeComplexOption.empty()) {
2958	if (GccRangeComplexOption != "-fcx-limited-range") {
2959	if (GccRangeComplexOption != "-fcx-fortran-rules") {
2960	if (RangeVal != LangOptions::ComplexRangeKind::CX_Improved)
2961	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2962	str2: ComplexArithmeticStr(Range: RangeVal));
2963	} else {
2964	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2965	str2: ComplexArithmeticStr(Range: RangeVal));
2966	}
2967	} else {
2968	if (RangeVal != LangOptions::ComplexRangeKind::CX_Basic)
2969	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2970	str2: ComplexArithmeticStr(Range: RangeVal));
2971	}
2972	}
2973	LastComplexRangeOption =
2974	Args.MakeArgString(Str: A->getSpelling() + A->getValue());
2975	Range = RangeVal;
2976	break;
2977	}
2978	case options::OPT_ffp_model_EQ: {
2979	// If -ffp-model= is seen, reset to fno-fast-math
2980	HonorINFs = true;
2981	HonorNaNs = true;
2982	ApproxFunc = false;
2983	// Turning *off* -ffast-math restores the toolchain default.
2984	MathErrno = TC.IsMathErrnoDefault();
2985	AssociativeMath = false;
2986	ReciprocalMath = false;
2987	SignedZeros = true;
2988
2989	StringRef Val = A->getValue();
2990	if (OFastEnabled && Val != "aggressive") {
2991	// Only -ffp-model=aggressive is compatible with -OFast, ignore.
2992	D.Diag(DiagID: clang::diag::warn_drv_overriding_option)
2993	<< Args.MakeArgString(Str: "-ffp-model=" + Val) << "-Ofast";
2994	break;
2995	}
2996	StrictFPModel = false;
2997	if (!FPModel.empty() && FPModel != Val)
2998	D.Diag(DiagID: clang::diag::warn_drv_overriding_option)
2999	<< Args.MakeArgString(Str: "-ffp-model=" + FPModel)
3000	<< Args.MakeArgString(Str: "-ffp-model=" + Val);
3001	if (Val == "fast") {
3002	FPModel = Val;
3003	applyFastMath(false);
3004	// applyFastMath sets fp-contract="fast"
3005	LastFpContractOverrideOption = "-ffp-model=fast";
3006	} else if (Val == "aggressive") {
3007	FPModel = Val;
3008	applyFastMath(true);
3009	// applyFastMath sets fp-contract="fast"
3010	LastFpContractOverrideOption = "-ffp-model=aggressive";
3011	} else if (Val == "precise") {
3012	FPModel = Val;
3013	FPContract = "on";
3014	LastFpContractOverrideOption = "-ffp-model=precise";
3015	setComplexRange(LangOptions::ComplexRangeKind::CX_Full);
3016	} else if (Val == "strict") {
3017	StrictFPModel = true;
3018	FPExceptionBehavior = "strict";
3019	FPModel = Val;
3020	FPContract = "off";
3021	LastFpContractOverrideOption = "-ffp-model=strict";
3022	TrappingMath = true;
3023	RoundingFPMath = true;
3024	setComplexRange(LangOptions::ComplexRangeKind::CX_Full);
3025	} else
3026	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
3027	<< A->getSpelling() << Val;
3028	LastComplexRangeOption = A->getSpelling();
3029	break;
3030	}
3031
3032	// Options controlling individual features
3033	case options::OPT_fhonor_infinities: HonorINFs = true; break;
3034	case options::OPT_fno_honor_infinities: HonorINFs = false; break;
3035	case options::OPT_fhonor_nans: HonorNaNs = true; break;
3036	case options::OPT_fno_honor_nans: HonorNaNs = false; break;
3037	case options::OPT_fapprox_func: ApproxFunc = true; break;
3038	case options::OPT_fno_approx_func: ApproxFunc = false; break;
3039	case options::OPT_fmath_errno: MathErrno = true; break;
3040	case options::OPT_fno_math_errno: MathErrno = false; break;
3041	case options::OPT_fassociative_math: AssociativeMath = true; break;
3042	case options::OPT_fno_associative_math: AssociativeMath = false; break;
3043	case options::OPT_freciprocal_math: ReciprocalMath = true; break;
3044	case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
3045	case options::OPT_fsigned_zeros: SignedZeros = true; break;
3046	case options::OPT_fno_signed_zeros: SignedZeros = false; break;
3047	case options::OPT_ftrapping_math:
3048	if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
3049	FPExceptionBehavior != "strict")
3050	// Warn that previous value of option is overridden.
3051	D.Diag(DiagID: clang::diag::warn_drv_overriding_option)
3052	<< Args.MakeArgString(Str: "-ffp-exception-behavior=" +
3053	FPExceptionBehavior)
3054	<< "-ftrapping-math";
3055	TrappingMath = true;
3056	TrappingMathPresent = true;
3057	FPExceptionBehavior = "strict";
3058	break;
3059	case options::OPT_fveclib:
3060	VecLibArg = A;
3061	NoMathErrnoWasImpliedByVecLib =
3062	llvm::is_contained(Range: VecLibImpliesNoMathErrno, Element: A->getValue());
3063	if (NoMathErrnoWasImpliedByVecLib)
3064	MathErrno = false;
3065	break;
3066	case options::OPT_fno_trapping_math:
3067	if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
3068	FPExceptionBehavior != "ignore")
3069	// Warn that previous value of option is overridden.
3070	D.Diag(DiagID: clang::diag::warn_drv_overriding_option)
3071	<< Args.MakeArgString(Str: "-ffp-exception-behavior=" +
3072	FPExceptionBehavior)
3073	<< "-fno-trapping-math";
3074	TrappingMath = false;
3075	TrappingMathPresent = true;
3076	FPExceptionBehavior = "ignore";
3077	break;
3078
3079	case options::OPT_frounding_math:
3080	RoundingFPMath = true;
3081	break;
3082
3083	case options::OPT_fno_rounding_math:
3084	RoundingFPMath = false;
3085	break;
3086
3087	case options::OPT_fdenormal_fp_math_EQ:
3088	DenormalFPMath = llvm::parseDenormalFPAttribute(Str: A->getValue());
3089	DenormalFP32Math = DenormalFPMath;
3090	if (!DenormalFPMath.isValid()) {
3091	D.Diag(DiagID: diag::err_drv_invalid_value)
3092	<< A->getAsString(Args) << A->getValue();
3093	}
3094	break;
3095
3096	case options::OPT_fdenormal_fp_math_f32_EQ:
3097	DenormalFP32Math = llvm::parseDenormalFPAttribute(Str: A->getValue());
3098	if (!DenormalFP32Math.isValid()) {
3099	D.Diag(DiagID: diag::err_drv_invalid_value)
3100	<< A->getAsString(Args) << A->getValue();
3101	}
3102	break;
3103
3104	// Validate and pass through -ffp-contract option.
3105	case options::OPT_ffp_contract: {
3106	StringRef Val = A->getValue();
3107	if (Val == "fast" || Val == "on" || Val == "off" ||
3108	Val == "fast-honor-pragmas") {
3109	if (Val != FPContract && LastFpContractOverrideOption != "") {
3110	D.Diag(DiagID: clang::diag::warn_drv_overriding_option)
3111	<< LastFpContractOverrideOption
3112	<< Args.MakeArgString(Str: "-ffp-contract=" + Val);
3113	}
3114
3115	FPContract = Val;
3116	LastSeenFfpContractOption = Val;
3117	LastFpContractOverrideOption = "";
3118	} else
3119	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
3120	<< A->getSpelling() << Val;
3121	break;
3122	}
3123
3124	// Validate and pass through -ffp-exception-behavior option.
3125	case options::OPT_ffp_exception_behavior_EQ: {
3126	StringRef Val = A->getValue();
3127	if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
3128	FPExceptionBehavior != Val)
3129	// Warn that previous value of option is overridden.
3130	D.Diag(DiagID: clang::diag::warn_drv_overriding_option)
3131	<< Args.MakeArgString(Str: "-ffp-exception-behavior=" +
3132	FPExceptionBehavior)
3133	<< Args.MakeArgString(Str: "-ffp-exception-behavior=" + Val);
3134	TrappingMath = TrappingMathPresent = false;
3135	if (Val == "ignore" || Val == "maytrap")
3136	FPExceptionBehavior = Val;
3137	else if (Val == "strict") {
3138	FPExceptionBehavior = Val;
3139	TrappingMath = TrappingMathPresent = true;
3140	} else
3141	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
3142	<< A->getSpelling() << Val;
3143	break;
3144	}
3145
3146	// Validate and pass through -ffp-eval-method option.
3147	case options::OPT_ffp_eval_method_EQ: {
3148	StringRef Val = A->getValue();
3149	if (Val == "double" || Val == "extended" || Val == "source")
3150	FPEvalMethod = Val;
3151	else
3152	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
3153	<< A->getSpelling() << Val;
3154	break;
3155	}
3156
3157	case options::OPT_fexcess_precision_EQ: {
3158	StringRef Val = A->getValue();
3159	const llvm::Triple::ArchType Arch = TC.getArch();
3160	if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
3161	if (Val == "standard" || Val == "fast")
3162	Float16ExcessPrecision = Val;
3163	// To make it GCC compatible, allow the value of "16" which
3164	// means disable excess precision, the same meaning than clang's
3165	// equivalent value "none".
3166	else if (Val == "16")
3167	Float16ExcessPrecision = "none";
3168	else
3169	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
3170	<< A->getSpelling() << Val;
3171	} else {
3172	if (!(Val == "standard" || Val == "fast"))
3173	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
3174	<< A->getSpelling() << Val;
3175	}
3176	BFloat16ExcessPrecision = Float16ExcessPrecision;
3177	break;
3178	}
3179	case options::OPT_ffinite_math_only:
3180	HonorINFs = false;
3181	HonorNaNs = false;
3182	break;
3183	case options::OPT_fno_finite_math_only:
3184	HonorINFs = true;
3185	HonorNaNs = true;
3186	break;
3187
3188	case options::OPT_funsafe_math_optimizations:
3189	AssociativeMath = true;
3190	ReciprocalMath = true;
3191	SignedZeros = false;
3192	ApproxFunc = true;
3193	TrappingMath = false;
3194	FPExceptionBehavior = "";
3195	FPContract = "fast";
3196	LastFpContractOverrideOption = "-funsafe-math-optimizations";
3197	SeenUnsafeMathModeOption = true;
3198	break;
3199	case options::OPT_fno_unsafe_math_optimizations:
3200	AssociativeMath = false;
3201	ReciprocalMath = false;
3202	SignedZeros = true;
3203	ApproxFunc = false;
3204	restoreFPContractState();
3205	break;
3206
3207	case options::OPT_Ofast:
3208	// If -Ofast is the optimization level, then -ffast-math should be enabled
3209	if (!OFastEnabled)
3210	continue;
3211	[[fallthrough]];
3212	case options::OPT_ffast_math:
3213	applyFastMath(true);
3214	LastComplexRangeOption = A->getSpelling();
3215	if (A->getOption().getID() == options::OPT_Ofast)
3216	LastFpContractOverrideOption = "-Ofast";
3217	else
3218	LastFpContractOverrideOption = "-ffast-math";
3219	break;
3220	case options::OPT_fno_fast_math:
3221	HonorINFs = true;
3222	HonorNaNs = true;
3223	// Turning on -ffast-math (with either flag) removes the need for
3224	// MathErrno. However, turning *off* -ffast-math merely restores the
3225	// toolchain default (which may be false).
3226	MathErrno = TC.IsMathErrnoDefault();
3227	AssociativeMath = false;
3228	ReciprocalMath = false;
3229	ApproxFunc = false;
3230	SignedZeros = true;
3231	restoreFPContractState();
3232	// If the last specified option related to complex range is not
3233	// -ffast-math or -ffp-model=, emit warning.
3234	if (LastComplexRangeOption != "-ffast-math" &&
3235	LastComplexRangeOption != "-ffp-model=" &&
3236	Range != LangOptions::ComplexRangeKind::CX_Full)
3237	EmitComplexRangeDiag(D, str1: LastComplexRangeOption, str2: "-fno-fast-math");
3238	Range = LangOptions::ComplexRangeKind::CX_None;
3239	LastComplexRangeOption = "";
3240	GccRangeComplexOption = "";
3241	LastFpContractOverrideOption = "";
3242	break;
3243	} // End switch (A->getOption().getID())
3244
3245	// The StrictFPModel local variable is needed to report warnings
3246	// in the way we intend. If -ffp-model=strict has been used, we
3247	// want to report a warning for the next option encountered that
3248	// takes us out of the settings described by fp-model=strict, but
3249	// we don't want to continue issuing warnings for other conflicting
3250	// options after that.
3251	if (StrictFPModel) {
3252	// If -ffp-model=strict has been specified on command line but
3253	// subsequent options conflict then emit warning diagnostic.
3254	if (HonorINFs && HonorNaNs && !AssociativeMath && !ReciprocalMath &&
3255	SignedZeros && TrappingMath && RoundingFPMath && !ApproxFunc &&
3256	FPContract == "off")
3257	// OK: Current Arg doesn't conflict with -ffp-model=strict
3258	;
3259	else {
3260	StrictFPModel = false;
3261	FPModel = "";
3262	// The warning for -ffp-contract would have been reported by the
3263	// OPT_ffp_contract_EQ handler above. A special check here is needed
3264	// to avoid duplicating the warning.
3265	auto RHS = (A->getNumValues() == 0)
3266	? A->getSpelling()
3267	: Args.MakeArgString(Str: A->getSpelling() + A->getValue());
3268	if (A->getSpelling() != "-ffp-contract=") {
3269	if (RHS != "-ffp-model=strict")
3270	D.Diag(DiagID: clang::diag::warn_drv_overriding_option)
3271	<< "-ffp-model=strict" << RHS;
3272	}
3273	}
3274	}
3275
3276	// If we handled this option claim it
3277	A->claim();
3278	}
3279
3280	if (!HonorINFs)
3281	CmdArgs.push_back(Elt: "-menable-no-infs");
3282
3283	if (!HonorNaNs)
3284	CmdArgs.push_back(Elt: "-menable-no-nans");
3285
3286	if (ApproxFunc)
3287	CmdArgs.push_back(Elt: "-fapprox-func");
3288
3289	if (MathErrno) {
3290	CmdArgs.push_back(Elt: "-fmath-errno");
3291	if (NoMathErrnoWasImpliedByVecLib)
3292	D.Diag(DiagID: clang::diag::warn_drv_math_errno_enabled_after_veclib)
3293	<< ArgThatEnabledMathErrnoAfterVecLib->getAsString(Args)
3294	<< VecLibArg->getAsString(Args);
3295	}
3296
3297	if (AssociativeMath && ReciprocalMath && !SignedZeros && ApproxFunc &&
3298	!TrappingMath)
3299	CmdArgs.push_back(Elt: "-funsafe-math-optimizations");
3300
3301	if (!SignedZeros)
3302	CmdArgs.push_back(Elt: "-fno-signed-zeros");
3303
3304	if (AssociativeMath && !SignedZeros && !TrappingMath)
3305	CmdArgs.push_back(Elt: "-mreassociate");
3306
3307	if (ReciprocalMath)
3308	CmdArgs.push_back(Elt: "-freciprocal-math");
3309
3310	if (TrappingMath) {
3311	// FP Exception Behavior is also set to strict
3312	assert(FPExceptionBehavior == "strict");
3313	}
3314
3315	// The default is IEEE.
3316	if (DenormalFPMath != llvm::DenormalMode::getIEEE()) {
3317	llvm::SmallString<64> DenormFlag;
3318	llvm::raw_svector_ostream ArgStr(DenormFlag);
3319	ArgStr << "-fdenormal-fp-math=" << DenormalFPMath;
3320	CmdArgs.push_back(Elt: Args.MakeArgString(Str: ArgStr.str()));
3321	}
3322
3323	// Add f32 specific denormal mode flag if it's different.
3324	if (DenormalFP32Math != DenormalFPMath) {
3325	llvm::SmallString<64> DenormFlag;
3326	llvm::raw_svector_ostream ArgStr(DenormFlag);
3327	ArgStr << "-fdenormal-fp-math-f32=" << DenormalFP32Math;
3328	CmdArgs.push_back(Elt: Args.MakeArgString(Str: ArgStr.str()));
3329	}
3330
3331	if (!FPContract.empty())
3332	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffp-contract=" + FPContract));
3333
3334	if (RoundingFPMath)
3335	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-frounding-math"));
3336	else
3337	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fno-rounding-math"));
3338
3339	if (!FPExceptionBehavior.empty())
3340	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffp-exception-behavior=" +
3341	FPExceptionBehavior));
3342
3343	if (!FPEvalMethod.empty())
3344	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffp-eval-method=" + FPEvalMethod));
3345
3346	if (!Float16ExcessPrecision.empty())
3347	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffloat16-excess-precision=" +
3348	Float16ExcessPrecision));
3349	if (!BFloat16ExcessPrecision.empty())
3350	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fbfloat16-excess-precision=" +
3351	BFloat16ExcessPrecision));
3352
3353	StringRef Recip = parseMRecipOption(Diags&: D.getDiags(), Args);
3354	if (!Recip.empty())
3355	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mrecip=" + Recip));
3356
3357	// -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
3358	// individual features enabled by -ffast-math instead of the option itself as
3359	// that's consistent with gcc's behaviour.
3360	if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath && ApproxFunc &&
3361	ReciprocalMath && !SignedZeros && !TrappingMath && !RoundingFPMath)
3362	CmdArgs.push_back(Elt: "-ffast-math");
3363
3364	// Handle __FINITE_MATH_ONLY__ similarly.
3365	// The -ffinite-math-only is added to CmdArgs when !HonorINFs && !HonorNaNs.
3366	// Otherwise process the Xclang arguments to determine if -menable-no-infs and
3367	// -menable-no-nans are set by the user.
3368	bool shouldAddFiniteMathOnly = false;
3369	if (!HonorINFs && !HonorNaNs) {
3370	shouldAddFiniteMathOnly = true;
3371	} else {
3372	bool InfValues = true;
3373	bool NanValues = true;
3374	for (const auto *Arg : Args.filtered(Ids: options::OPT_Xclang)) {
3375	StringRef ArgValue = Arg->getValue();
3376	if (ArgValue == "-menable-no-nans")
3377	NanValues = false;
3378	else if (ArgValue == "-menable-no-infs")
3379	InfValues = false;
3380	}
3381	if (!NanValues && !InfValues)
3382	shouldAddFiniteMathOnly = true;
3383	}
3384	if (shouldAddFiniteMathOnly) {
3385	CmdArgs.push_back(Elt: "-ffinite-math-only");
3386	}
3387	if (const Arg *A = Args.getLastArg(Ids: options::OPT_mfpmath_EQ)) {
3388	CmdArgs.push_back(Elt: "-mfpmath");
3389	CmdArgs.push_back(Elt: A->getValue());
3390	}
3391
3392	// Disable a codegen optimization for floating-point casts.
3393	if (Args.hasFlag(Pos: options::OPT_fno_strict_float_cast_overflow,
3394	Neg: options::OPT_fstrict_float_cast_overflow, Default: false))
3395	CmdArgs.push_back(Elt: "-fno-strict-float-cast-overflow");
3396
3397	if (Range != LangOptions::ComplexRangeKind::CX_None)
3398	ComplexRangeStr = renderComplexRangeOption(Range);
3399	if (!ComplexRangeStr.empty()) {
3400	CmdArgs.push_back(Elt: Args.MakeArgString(Str: ComplexRangeStr));
3401	if (Args.hasArg(Ids: options::OPT_fcomplex_arithmetic_EQ))
3402	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fcomplex-arithmetic=" +
3403	complexRangeKindToStr(Range)));
3404	}
3405	if (Args.hasArg(Ids: options::OPT_fcx_limited_range))
3406	CmdArgs.push_back(Elt: "-fcx-limited-range");
3407	if (Args.hasArg(Ids: options::OPT_fcx_fortran_rules))
3408	CmdArgs.push_back(Elt: "-fcx-fortran-rules");
3409	if (Args.hasArg(Ids: options::OPT_fno_cx_limited_range))
3410	CmdArgs.push_back(Elt: "-fno-cx-limited-range");
3411	if (Args.hasArg(Ids: options::OPT_fno_cx_fortran_rules))
3412	CmdArgs.push_back(Elt: "-fno-cx-fortran-rules");
3413	}
3414
3415	static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
3416	const llvm::Triple &Triple,
3417	const InputInfo &Input) {
3418	// Add default argument set.
3419	if (!Args.hasArg(Ids: options::OPT__analyzer_no_default_checks)) {
3420	CmdArgs.push_back(Elt: "-analyzer-checker=core");
3421	CmdArgs.push_back(Elt: "-analyzer-checker=apiModeling");
3422
3423	if (!Triple.isWindowsMSVCEnvironment()) {
3424	CmdArgs.push_back(Elt: "-analyzer-checker=unix");
3425	} else {
3426	// Enable "unix" checkers that also work on Windows.
3427	CmdArgs.push_back(Elt: "-analyzer-checker=unix.API");
3428	CmdArgs.push_back(Elt: "-analyzer-checker=unix.Malloc");
3429	CmdArgs.push_back(Elt: "-analyzer-checker=unix.MallocSizeof");
3430	CmdArgs.push_back(Elt: "-analyzer-checker=unix.MismatchedDeallocator");
3431	CmdArgs.push_back(Elt: "-analyzer-checker=unix.cstring.BadSizeArg");
3432	CmdArgs.push_back(Elt: "-analyzer-checker=unix.cstring.NullArg");
3433	}
3434
3435	// Disable some unix checkers for PS4/PS5.
3436	if (Triple.isPS()) {
3437	CmdArgs.push_back(Elt: "-analyzer-disable-checker=unix.API");
3438	CmdArgs.push_back(Elt: "-analyzer-disable-checker=unix.Vfork");
3439	}
3440
3441	if (Triple.isOSDarwin()) {
3442	CmdArgs.push_back(Elt: "-analyzer-checker=osx");
3443	CmdArgs.push_back(
3444	Elt: "-analyzer-checker=security.insecureAPI.decodeValueOfObjCType");
3445	}
3446	else if (Triple.isOSFuchsia())
3447	CmdArgs.push_back(Elt: "-analyzer-checker=fuchsia");
3448
3449	CmdArgs.push_back(Elt: "-analyzer-checker=deadcode");
3450
3451	if (types::isCXX(Id: Input.getType()))
3452	CmdArgs.push_back(Elt: "-analyzer-checker=cplusplus");
3453
3454	if (!Triple.isPS()) {
3455	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.UncheckedReturn");
3456	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.getpw");
3457	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.gets");
3458	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.mktemp");
3459	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.mkstemp");
3460	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.vfork");
3461	}
3462
3463	// Default nullability checks.
3464	CmdArgs.push_back(Elt: "-analyzer-checker=nullability.NullPassedToNonnull");
3465	CmdArgs.push_back(Elt: "-analyzer-checker=nullability.NullReturnedFromNonnull");
3466	}
3467
3468	// Set the output format. The default is plist, for (lame) historical reasons.
3469	CmdArgs.push_back(Elt: "-analyzer-output");
3470	if (Arg *A = Args.getLastArg(Ids: options::OPT__analyzer_output))
3471	CmdArgs.push_back(Elt: A->getValue());
3472	else
3473	CmdArgs.push_back(Elt: "plist");
3474
3475	// Disable the presentation of standard compiler warnings when using
3476	// --analyze. We only want to show static analyzer diagnostics or frontend
3477	// errors.
3478	CmdArgs.push_back(Elt: "-w");
3479
3480	// Add -Xanalyzer arguments when running as analyzer.
3481	Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Xanalyzer);
3482	}
3483
3484	static bool isValidSymbolName(StringRef S) {
3485	if (S.empty())
3486	return false;
3487
3488	if (std::isdigit(S[0]))
3489	return false;
3490
3491	return llvm::all_of(Range&: S, P: [](char C) { return std::isalnum(C) || C == '_'; });
3492	}
3493
3494	static void RenderSSPOptions(const Driver &D, const ToolChain &TC,
3495	const ArgList &Args, ArgStringList &CmdArgs,
3496	bool KernelOrKext) {
3497	const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3498
3499	// NVPTX doesn't support stack protectors; from the compiler's perspective, it
3500	// doesn't even have a stack!
3501	if (EffectiveTriple.isNVPTX())
3502	return;
3503
3504	// -stack-protector=0 is default.
3505	LangOptions::StackProtectorMode StackProtectorLevel = LangOptions::SSPOff;
3506	LangOptions::StackProtectorMode DefaultStackProtectorLevel =
3507	TC.GetDefaultStackProtectorLevel(KernelOrKext);
3508
3509	if (Arg *A = Args.getLastArg(Ids: options::OPT_fno_stack_protector,
3510	Ids: options::OPT_fstack_protector_all,
3511	Ids: options::OPT_fstack_protector_strong,
3512	Ids: options::OPT_fstack_protector)) {
3513	if (A->getOption().matches(ID: options::OPT_fstack_protector))
3514	StackProtectorLevel =
3515	std::max<>(a: LangOptions::SSPOn, b: DefaultStackProtectorLevel);
3516	else if (A->getOption().matches(ID: options::OPT_fstack_protector_strong))
3517	StackProtectorLevel = LangOptions::SSPStrong;
3518	else if (A->getOption().matches(ID: options::OPT_fstack_protector_all))
3519	StackProtectorLevel = LangOptions::SSPReq;
3520
3521	if (EffectiveTriple.isBPF() && StackProtectorLevel != LangOptions::SSPOff) {
3522	D.Diag(DiagID: diag::warn_drv_unsupported_option_for_target)
3523	<< A->getSpelling() << EffectiveTriple.getTriple();
3524	StackProtectorLevel = DefaultStackProtectorLevel;
3525	}
3526	} else {
3527	StackProtectorLevel = DefaultStackProtectorLevel;
3528	}
3529
3530	if (StackProtectorLevel) {
3531	CmdArgs.push_back(Elt: "-stack-protector");
3532	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(StackProtectorLevel)));
3533	}
3534
3535	// --param ssp-buffer-size=
3536	for (const Arg *A : Args.filtered(Ids: options::OPT__param)) {
3537	StringRef Str(A->getValue());
3538	if (Str.consume_front(Prefix: "ssp-buffer-size=")) {
3539	if (StackProtectorLevel) {
3540	CmdArgs.push_back(Elt: "-stack-protector-buffer-size");
3541	// FIXME: Verify the argument is a valid integer.
3542	CmdArgs.push_back(Elt: Args.MakeArgString(Str));
3543	}
3544	A->claim();
3545	}
3546	}
3547
3548	const std::string &TripleStr = EffectiveTriple.getTriple();
3549	if (Arg *A = Args.getLastArg(Ids: options::OPT_mstack_protector_guard_EQ)) {
3550	StringRef Value = A->getValue();
3551	if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3552	!EffectiveTriple.isARM() && !EffectiveTriple.isThumb() &&
3553	!EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())
3554	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
3555	<< A->getAsString(Args) << TripleStr;
3556	if ((EffectiveTriple.isX86() || EffectiveTriple.isARM() ||
3557	EffectiveTriple.isThumb()) &&
3558	Value != "tls" && Value != "global") {
3559	D.Diag(DiagID: diag::err_drv_invalid_value_with_suggestion)
3560	<< A->getOption().getName() << Value << "tls global";
3561	return;
3562	}
3563	if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&
3564	Value == "tls") {
3565	if (!Args.hasArg(Ids: options::OPT_mstack_protector_guard_offset_EQ)) {
3566	D.Diag(DiagID: diag::err_drv_ssp_missing_offset_argument)
3567	<< A->getAsString(Args);
3568	return;
3569	}
3570	// Check whether the target subarch supports the hardware TLS register
3571	if (!arm::isHardTPSupported(Triple: EffectiveTriple)) {
3572	D.Diag(DiagID: diag::err_target_unsupported_tp_hard)
3573	<< EffectiveTriple.getArchName();
3574	return;
3575	}
3576	// Check whether the user asked for something other than -mtp=cp15
3577	if (Arg *A = Args.getLastArg(Ids: options::OPT_mtp_mode_EQ)) {
3578	StringRef Value = A->getValue();
3579	if (Value != "cp15") {
3580	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
3581	<< A->getAsString(Args) << "-mstack-protector-guard=tls";
3582	return;
3583	}
3584	}
3585	CmdArgs.push_back(Elt: "-target-feature");
3586	CmdArgs.push_back(Elt: "+read-tp-tpidruro");
3587	}
3588	if (EffectiveTriple.isAArch64() && Value != "sysreg" && Value != "global") {
3589	D.Diag(DiagID: diag::err_drv_invalid_value_with_suggestion)
3590	<< A->getOption().getName() << Value << "sysreg global";
3591	return;
3592	}
3593	if (EffectiveTriple.isRISCV() || EffectiveTriple.isPPC()) {
3594	if (Value != "tls" && Value != "global") {
3595	D.Diag(DiagID: diag::err_drv_invalid_value_with_suggestion)
3596	<< A->getOption().getName() << Value << "tls global";
3597	return;
3598	}
3599	if (Value == "tls") {
3600	if (!Args.hasArg(Ids: options::OPT_mstack_protector_guard_offset_EQ)) {
3601	D.Diag(DiagID: diag::err_drv_ssp_missing_offset_argument)
3602	<< A->getAsString(Args);
3603	return;
3604	}
3605	}
3606	}
3607	A->render(Args, Output&: CmdArgs);
3608	}
3609
3610	if (Arg *A = Args.getLastArg(Ids: options::OPT_mstack_protector_guard_offset_EQ)) {
3611	StringRef Value = A->getValue();
3612	if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3613	!EffectiveTriple.isARM() && !EffectiveTriple.isThumb() &&
3614	!EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())
3615	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
3616	<< A->getAsString(Args) << TripleStr;
3617	int Offset;
3618	if (Value.getAsInteger(Radix: 10, Result&: Offset)) {
3619	D.Diag(DiagID: diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3620	return;
3621	}
3622	if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&
3623	(Offset < 0 || Offset > 0xfffff)) {
3624	D.Diag(DiagID: diag::err_drv_invalid_int_value)
3625	<< A->getOption().getName() << Value;
3626	return;
3627	}
3628	A->render(Args, Output&: CmdArgs);
3629	}
3630
3631	if (Arg *A = Args.getLastArg(Ids: options::OPT_mstack_protector_guard_reg_EQ)) {
3632	StringRef Value = A->getValue();
3633	if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3634	!EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())
3635	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
3636	<< A->getAsString(Args) << TripleStr;
3637	if (EffectiveTriple.isX86() && (Value != "fs" && Value != "gs")) {
3638	D.Diag(DiagID: diag::err_drv_invalid_value_with_suggestion)
3639	<< A->getOption().getName() << Value << "fs gs";
3640	return;
3641	}
3642	if (EffectiveTriple.isAArch64() && Value != "sp_el0") {
3643	D.Diag(DiagID: diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3644	return;
3645	}
3646	if (EffectiveTriple.isRISCV() && Value != "tp") {
3647	D.Diag(DiagID: diag::err_drv_invalid_value_with_suggestion)
3648	<< A->getOption().getName() << Value << "tp";
3649	return;
3650	}
3651	if (EffectiveTriple.isPPC64() && Value != "r13") {
3652	D.Diag(DiagID: diag::err_drv_invalid_value_with_suggestion)
3653	<< A->getOption().getName() << Value << "r13";
3654	return;
3655	}
3656	if (EffectiveTriple.isPPC32() && Value != "r2") {
3657	D.Diag(DiagID: diag::err_drv_invalid_value_with_suggestion)
3658	<< A->getOption().getName() << Value << "r2";
3659	return;
3660	}
3661	A->render(Args, Output&: CmdArgs);
3662	}
3663
3664	if (Arg *A = Args.getLastArg(Ids: options::OPT_mstack_protector_guard_symbol_EQ)) {
3665	StringRef Value = A->getValue();
3666	if (!isValidSymbolName(S: Value)) {
3667	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
3668	<< A->getOption().getName() << "legal symbol name";
3669	return;
3670	}
3671	A->render(Args, Output&: CmdArgs);
3672	}
3673	}
3674
3675	static void RenderSCPOptions(const ToolChain &TC, const ArgList &Args,
3676	ArgStringList &CmdArgs) {
3677	const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3678
3679	if (!EffectiveTriple.isOSFreeBSD() && !EffectiveTriple.isOSLinux() &&
3680	!EffectiveTriple.isOSFuchsia())
3681	return;
3682
3683	if (!EffectiveTriple.isX86() && !EffectiveTriple.isSystemZ() &&
3684	!EffectiveTriple.isPPC64() && !EffectiveTriple.isAArch64() &&
3685	!EffectiveTriple.isRISCV())
3686	return;
3687
3688	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fstack_clash_protection,
3689	Neg: options::OPT_fno_stack_clash_protection);
3690	}
3691
3692	static void RenderTrivialAutoVarInitOptions(const Driver &D,
3693	const ToolChain &TC,
3694	const ArgList &Args,
3695	ArgStringList &CmdArgs) {
3696	auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
3697	StringRef TrivialAutoVarInit = "";
3698
3699	for (const Arg *A : Args) {
3700	switch (A->getOption().getID()) {
3701	default:
3702	continue;
3703	case options::OPT_ftrivial_auto_var_init: {
3704	A->claim();
3705	StringRef Val = A->getValue();
3706	if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
3707	TrivialAutoVarInit = Val;
3708	else
3709	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
3710	<< A->getSpelling() << Val;
3711	break;
3712	}
3713	}
3714	}
3715
3716	if (TrivialAutoVarInit.empty())
3717	switch (DefaultTrivialAutoVarInit) {
3718	case LangOptions::TrivialAutoVarInitKind::Uninitialized:
3719	break;
3720	case LangOptions::TrivialAutoVarInitKind::Pattern:
3721	TrivialAutoVarInit = "pattern";
3722	break;
3723	case LangOptions::TrivialAutoVarInitKind::Zero:
3724	TrivialAutoVarInit = "zero";
3725	break;
3726	}
3727
3728	if (!TrivialAutoVarInit.empty()) {
3729	CmdArgs.push_back(
3730	Elt: Args.MakeArgString(Str: "-ftrivial-auto-var-init=" + TrivialAutoVarInit));
3731	}
3732
3733	if (Arg *A =
3734	Args.getLastArg(Ids: options::OPT_ftrivial_auto_var_init_stop_after)) {
3735	if (!Args.hasArg(Ids: options::OPT_ftrivial_auto_var_init) ||
3736	StringRef(
3737	Args.getLastArg(Ids: options::OPT_ftrivial_auto_var_init)->getValue()) ==
3738	"uninitialized")
3739	D.Diag(DiagID: diag::err_drv_trivial_auto_var_init_stop_after_missing_dependency);
3740	A->claim();
3741	StringRef Val = A->getValue();
3742	if (std::stoi(str: Val.str()) <= 0)
3743	D.Diag(DiagID: diag::err_drv_trivial_auto_var_init_stop_after_invalid_value);
3744	CmdArgs.push_back(
3745	Elt: Args.MakeArgString(Str: "-ftrivial-auto-var-init-stop-after=" + Val));
3746	}
3747
3748	if (Arg *A = Args.getLastArg(Ids: options::OPT_ftrivial_auto_var_init_max_size)) {
3749	if (!Args.hasArg(Ids: options::OPT_ftrivial_auto_var_init) ||
3750	StringRef(
3751	Args.getLastArg(Ids: options::OPT_ftrivial_auto_var_init)->getValue()) ==
3752	"uninitialized")
3753	D.Diag(DiagID: diag::err_drv_trivial_auto_var_init_max_size_missing_dependency);
3754	A->claim();
3755	StringRef Val = A->getValue();
3756	if (std::stoi(str: Val.str()) <= 0)
3757	D.Diag(DiagID: diag::err_drv_trivial_auto_var_init_max_size_invalid_value);
3758	CmdArgs.push_back(
3759	Elt: Args.MakeArgString(Str: "-ftrivial-auto-var-init-max-size=" + Val));
3760	}
3761	}
3762
3763	static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs,
3764	types::ID InputType) {
3765	// cl-denorms-are-zero is not forwarded. It is translated into a generic flag
3766	// for denormal flushing handling based on the target.
3767	const unsigned ForwardedArguments[] = {
3768	options::OPT_cl_opt_disable,
3769	options::OPT_cl_strict_aliasing,
3770	options::OPT_cl_single_precision_constant,
3771	options::OPT_cl_finite_math_only,
3772	options::OPT_cl_kernel_arg_info,
3773	options::OPT_cl_unsafe_math_optimizations,
3774	options::OPT_cl_fast_relaxed_math,
3775	options::OPT_cl_mad_enable,
3776	options::OPT_cl_no_signed_zeros,
3777	options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
3778	options::OPT_cl_uniform_work_group_size
3779	};
3780
3781	if (Arg *A = Args.getLastArg(Ids: options::OPT_cl_std_EQ)) {
3782	std::string CLStdStr = std::string("-cl-std=") + A->getValue();
3783	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CLStdStr));
3784	} else if (Arg *A = Args.getLastArg(Ids: options::OPT_cl_ext_EQ)) {
3785	std::string CLExtStr = std::string("-cl-ext=") + A->getValue();
3786	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CLExtStr));
3787	}
3788
3789	if (Args.hasArg(Ids: options::OPT_cl_finite_math_only)) {
3790	CmdArgs.push_back(Elt: "-menable-no-infs");
3791	CmdArgs.push_back(Elt: "-menable-no-nans");
3792	}
3793
3794	for (const auto &Arg : ForwardedArguments)
3795	if (const auto *A = Args.getLastArg(Ids: Arg))
3796	CmdArgs.push_back(Elt: Args.MakeArgString(Str: A->getOption().getPrefixedName()));
3797
3798	// Only add the default headers if we are compiling OpenCL sources.
3799	if ((types::isOpenCL(Id: InputType) ||
3800	(Args.hasArg(Ids: options::OPT_cl_std_EQ) && types::isSrcFile(Id: InputType))) &&
3801	!Args.hasArg(Ids: options::OPT_cl_no_stdinc)) {
3802	CmdArgs.push_back(Elt: "-finclude-default-header");
3803	CmdArgs.push_back(Elt: "-fdeclare-opencl-builtins");
3804	}
3805	}
3806
3807	static void RenderHLSLOptions(const ArgList &Args, ArgStringList &CmdArgs,
3808	types::ID InputType) {
3809	const unsigned ForwardedArguments[] = {
3810	options::OPT_dxil_validator_version,
3811	options::OPT_res_may_alias,
3812	options::OPT_D,
3813	options::OPT_I,
3814	options::OPT_O,
3815	options::OPT_emit_llvm,
3816	options::OPT_emit_obj,
3817	options::OPT_disable_llvm_passes,
3818	options::OPT_fnative_half_type,
3819	options::OPT_hlsl_entrypoint,
3820	options::OPT_fdx_rootsignature_version};
3821	if (!types::isHLSL(Id: InputType))
3822	return;
3823	for (const auto &Arg : ForwardedArguments)
3824	if (const auto *A = Args.getLastArg(Ids: Arg))
3825	A->renderAsInput(Args, Output&: CmdArgs);
3826	// Add the default headers if dxc_no_stdinc is not set.
3827	if (!Args.hasArg(Ids: options::OPT_dxc_no_stdinc) &&
3828	!Args.hasArg(Ids: options::OPT_nostdinc))
3829	CmdArgs.push_back(Elt: "-finclude-default-header");
3830	}
3831
3832	static void RenderOpenACCOptions(const Driver &D, const ArgList &Args,
3833	ArgStringList &CmdArgs, types::ID InputType) {
3834	if (!Args.hasArg(Ids: options::OPT_fopenacc))
3835	return;
3836
3837	CmdArgs.push_back(Elt: "-fopenacc");
3838
3839	if (Arg *A = Args.getLastArg(Ids: options::OPT_openacc_macro_override)) {
3840	StringRef Value = A->getValue();
3841	int Version;
3842	if (!Value.getAsInteger(Radix: 10, Result&: Version))
3843	A->renderAsInput(Args, Output&: CmdArgs);
3844	else
3845	D.Diag(DiagID: diag::err_drv_clang_unsupported) << Value;
3846	}
3847	}
3848
3849	static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
3850	const ArgList &Args, ArgStringList &CmdArgs) {
3851	// -fbuiltin is default unless -mkernel is used.
3852	bool UseBuiltins =
3853	Args.hasFlag(Pos: options::OPT_fbuiltin, Neg: options::OPT_fno_builtin,
3854	Default: !Args.hasArg(Ids: options::OPT_mkernel));
3855	if (!UseBuiltins)
3856	CmdArgs.push_back(Elt: "-fno-builtin");
3857
3858	// -ffreestanding implies -fno-builtin.
3859	if (Args.hasArg(Ids: options::OPT_ffreestanding))
3860	UseBuiltins = false;
3861
3862	// Process the -fno-builtin-* options.
3863	for (const Arg *A : Args.filtered(Ids: options::OPT_fno_builtin_)) {
3864	A->claim();
3865
3866	// If -fno-builtin is specified, then there's no need to pass the option to
3867	// the frontend.
3868	if (UseBuiltins)
3869	A->render(Args, Output&: CmdArgs);
3870	}
3871	}
3872
3873	bool Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
3874	if (const char *Str = std::getenv(name: "CLANG_MODULE_CACHE_PATH")) {
3875	Twine Path{Str};
3876	Path.toVector(Out&: Result);
3877	return Path.getSingleStringRef() != "";
3878	}
3879	if (llvm::sys::path::cache_directory(result&: Result)) {
3880	llvm::sys::path::append(path&: Result, a: "clang");
3881	llvm::sys::path::append(path&: Result, a: "ModuleCache");
3882	return true;
3883	}
3884	return false;
3885	}
3886
3887	llvm::SmallString<256>
3888	clang::driver::tools::getCXX20NamedModuleOutputPath(const ArgList &Args,
3889	const char *BaseInput) {
3890	if (Arg *ModuleOutputEQ = Args.getLastArg(Ids: options::OPT_fmodule_output_EQ))
3891	return StringRef(ModuleOutputEQ->getValue());
3892
3893	SmallString<256> OutputPath;
3894	if (Arg *FinalOutput = Args.getLastArg(Ids: options::OPT_o);
3895	FinalOutput && Args.hasArg(Ids: options::OPT_c))
3896	OutputPath = FinalOutput->getValue();
3897	else
3898	OutputPath = BaseInput;
3899
3900	const char *Extension = types::getTypeTempSuffix(Id: types::TY_ModuleFile);
3901	llvm::sys::path::replace_extension(path&: OutputPath, extension: Extension);
3902	return OutputPath;
3903	}
3904
3905	static bool RenderModulesOptions(Compilation &C, const Driver &D,
3906	const ArgList &Args, const InputInfo &Input,
3907	const InputInfo &Output, bool HaveStd20,
3908	ArgStringList &CmdArgs) {
3909	bool IsCXX = types::isCXX(Id: Input.getType());
3910	bool HaveStdCXXModules = IsCXX && HaveStd20;
3911	bool HaveModules = HaveStdCXXModules;
3912
3913	// -fmodules enables the use of precompiled modules (off by default).
3914	// Users can pass -fno-cxx-modules to turn off modules support for
3915	// C++/Objective-C++ programs.
3916	bool HaveClangModules = false;
3917	if (Args.hasFlag(Pos: options::OPT_fmodules, Neg: options::OPT_fno_modules, Default: false)) {
3918	bool AllowedInCXX = Args.hasFlag(Pos: options::OPT_fcxx_modules,
3919	Neg: options::OPT_fno_cxx_modules, Default: true);
3920	if (AllowedInCXX || !IsCXX) {
3921	CmdArgs.push_back(Elt: "-fmodules");
3922	HaveClangModules = true;
3923	}
3924	}
3925
3926	HaveModules |= HaveClangModules;
3927
3928	// -fmodule-maps enables implicit reading of module map files. By default,
3929	// this is enabled if we are using Clang's flavor of precompiled modules.
3930	if (Args.hasFlag(Pos: options::OPT_fimplicit_module_maps,
3931	Neg: options::OPT_fno_implicit_module_maps, Default: HaveClangModules))
3932	CmdArgs.push_back(Elt: "-fimplicit-module-maps");
3933
3934	// -fmodules-decluse checks that modules used are declared so (off by default)
3935	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fmodules_decluse,
3936	Neg: options::OPT_fno_modules_decluse);
3937
3938	// -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3939	// all #included headers are part of modules.
3940	if (Args.hasFlag(Pos: options::OPT_fmodules_strict_decluse,
3941	Neg: options::OPT_fno_modules_strict_decluse, Default: false))
3942	CmdArgs.push_back(Elt: "-fmodules-strict-decluse");
3943
3944	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fmodulemap_allow_subdirectory_search,
3945	Neg: options::OPT_fno_modulemap_allow_subdirectory_search);
3946
3947	// -fno-implicit-modules turns off implicitly compiling modules on demand.
3948	bool ImplicitModules = false;
3949	if (!Args.hasFlag(Pos: options::OPT_fimplicit_modules,
3950	Neg: options::OPT_fno_implicit_modules, Default: HaveClangModules)) {
3951	if (HaveModules)
3952	CmdArgs.push_back(Elt: "-fno-implicit-modules");
3953	} else if (HaveModules) {
3954	ImplicitModules = true;
3955	// -fmodule-cache-path specifies where our implicitly-built module files
3956	// should be written.
3957	SmallString<128> Path;
3958	if (Arg *A = Args.getLastArg(Ids: options::OPT_fmodules_cache_path))
3959	Path = A->getValue();
3960
3961	bool HasPath = true;
3962	if (C.isForDiagnostics()) {
3963	// When generating crash reports, we want to emit the modules along with
3964	// the reproduction sources, so we ignore any provided module path.
3965	Path = Output.getFilename();
3966	llvm::sys::path::replace_extension(path&: Path, extension: ".cache");
3967	llvm::sys::path::append(path&: Path, a: "modules");
3968	} else if (Path.empty()) {
3969	// No module path was provided: use the default.
3970	HasPath = Driver::getDefaultModuleCachePath(Result&: Path);
3971	}
3972
3973	// `HasPath` will only be false if getDefaultModuleCachePath() fails.
3974	// That being said, that failure is unlikely and not caching is harmless.
3975	if (HasPath) {
3976	const char Arg[] = "-fmodules-cache-path=";
3977	Path.insert(I: Path.begin(), From: Arg, To: Arg + strlen(s: Arg));
3978	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Path));
3979	}
3980	}
3981
3982	if (HaveModules) {
3983	if (Args.hasFlag(Pos: options::OPT_fprebuilt_implicit_modules,
3984	Neg: options::OPT_fno_prebuilt_implicit_modules, Default: false))
3985	CmdArgs.push_back(Elt: "-fprebuilt-implicit-modules");
3986	if (Args.hasFlag(Pos: options::OPT_fmodules_validate_input_files_content,
3987	Neg: options::OPT_fno_modules_validate_input_files_content,
3988	Default: false))
3989	CmdArgs.push_back(Elt: "-fvalidate-ast-input-files-content");
3990	}
3991
3992	// -fmodule-name specifies the module that is currently being built (or
3993	// used for header checking by -fmodule-maps).
3994	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fmodule_name_EQ);
3995
3996	// -fmodule-map-file can be used to specify files containing module
3997	// definitions.
3998	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fmodule_map_file);
3999
4000	// -fbuiltin-module-map can be used to load the clang
4001	// builtin headers modulemap file.
4002	if (Args.hasArg(Ids: options::OPT_fbuiltin_module_map)) {
4003	SmallString<128> BuiltinModuleMap(D.ResourceDir);
4004	llvm::sys::path::append(path&: BuiltinModuleMap, a: "include");
4005	llvm::sys::path::append(path&: BuiltinModuleMap, a: "module.modulemap");
4006	if (llvm::sys::fs::exists(Path: BuiltinModuleMap))
4007	CmdArgs.push_back(
4008	Elt: Args.MakeArgString(Str: "-fmodule-map-file=" + BuiltinModuleMap));
4009	}
4010
4011	// The -fmodule-file=<name>=<file> form specifies the mapping of module
4012	// names to precompiled module files (the module is loaded only if used).
4013	// The -fmodule-file=<file> form can be used to unconditionally load
4014	// precompiled module files (whether used or not).
4015	if (HaveModules || Input.getType() == clang::driver::types::TY_ModuleFile) {
4016	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fmodule_file);
4017
4018	// -fprebuilt-module-path specifies where to load the prebuilt module files.
4019	for (const Arg *A : Args.filtered(Ids: options::OPT_fprebuilt_module_path)) {
4020	CmdArgs.push_back(Elt: Args.MakeArgString(
4021	Str: std::string("-fprebuilt-module-path=") + A->getValue()));
4022	A->claim();
4023	}
4024	} else
4025	Args.ClaimAllArgs(Id0: options::OPT_fmodule_file);
4026
4027	// When building modules and generating crashdumps, we need to dump a module
4028	// dependency VFS alongside the output.
4029	if (HaveClangModules && C.isForDiagnostics()) {
4030	SmallString<128> VFSDir(Output.getFilename());
4031	llvm::sys::path::replace_extension(path&: VFSDir, extension: ".cache");
4032	// Add the cache directory as a temp so the crash diagnostics pick it up.
4033	C.addTempFile(Name: Args.MakeArgString(Str: VFSDir));
4034
4035	llvm::sys::path::append(path&: VFSDir, a: "vfs");
4036	CmdArgs.push_back(Elt: "-module-dependency-dir");
4037	CmdArgs.push_back(Elt: Args.MakeArgString(Str: VFSDir));
4038	}
4039
4040	if (HaveClangModules)
4041	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fmodules_user_build_path);
4042
4043	// Pass through all -fmodules-ignore-macro arguments.
4044	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fmodules_ignore_macro);
4045	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fmodules_prune_interval);
4046	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fmodules_prune_after);
4047
4048	if (HaveClangModules) {
4049	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fbuild_session_timestamp);
4050
4051	if (Arg *A = Args.getLastArg(Ids: options::OPT_fbuild_session_file)) {
4052	if (Args.hasArg(Ids: options::OPT_fbuild_session_timestamp))
4053	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
4054	<< A->getAsString(Args) << "-fbuild-session-timestamp";
4055
4056	llvm::sys::fs::file_status Status;
4057	if (llvm::sys::fs::status(path: A->getValue(), result&: Status))
4058	D.Diag(DiagID: diag::err_drv_no_such_file) << A->getValue();
4059	CmdArgs.push_back(Elt: Args.MakeArgString(
4060	Str: "-fbuild-session-timestamp=" +
4061	Twine((uint64_t)std::chrono::duration_cast<std::chrono::seconds>(
4062	d: Status.getLastModificationTime().time_since_epoch())
4063	.count())));
4064	}
4065
4066	if (Args.getLastArg(
4067	Ids: options::OPT_fmodules_validate_once_per_build_session)) {
4068	if (!Args.getLastArg(Ids: options::OPT_fbuild_session_timestamp,
4069	Ids: options::OPT_fbuild_session_file))
4070	D.Diag(DiagID: diag::err_drv_modules_validate_once_requires_timestamp);
4071
4072	Args.AddLastArg(Output&: CmdArgs,
4073	Ids: options::OPT_fmodules_validate_once_per_build_session);
4074	}
4075
4076	if (Args.hasFlag(Pos: options::OPT_fmodules_validate_system_headers,
4077	Neg: options::OPT_fno_modules_validate_system_headers,
4078	Default: ImplicitModules))
4079	CmdArgs.push_back(Elt: "-fmodules-validate-system-headers");
4080
4081	Args.AddLastArg(Output&: CmdArgs,
4082	Ids: options::OPT_fmodules_disable_diagnostic_validation);
4083	} else {
4084	Args.ClaimAllArgs(Id0: options::OPT_fbuild_session_timestamp);
4085	Args.ClaimAllArgs(Id0: options::OPT_fbuild_session_file);
4086	Args.ClaimAllArgs(Id0: options::OPT_fmodules_validate_once_per_build_session);
4087	Args.ClaimAllArgs(Id0: options::OPT_fmodules_validate_system_headers);
4088	Args.ClaimAllArgs(Id0: options::OPT_fno_modules_validate_system_headers);
4089	Args.ClaimAllArgs(Id0: options::OPT_fmodules_disable_diagnostic_validation);
4090	}
4091
4092	// FIXME: We provisionally don't check ODR violations for decls in the global
4093	// module fragment.
4094	CmdArgs.push_back(Elt: "-fskip-odr-check-in-gmf");
4095
4096	if (Args.hasArg(Ids: options::OPT_modules_reduced_bmi) &&
4097	(Input.getType() == driver::types::TY_CXXModule ||
4098	Input.getType() == driver::types::TY_PP_CXXModule)) {
4099	CmdArgs.push_back(Elt: "-fmodules-reduced-bmi");
4100
4101	if (Args.hasArg(Ids: options::OPT_fmodule_output_EQ))
4102	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fmodule_output_EQ);
4103	else {
4104	if (Args.hasArg(Ids: options::OPT__precompile) &&
4105	(!Args.hasArg(Ids: options::OPT_o) ||
4106	Args.getLastArg(Ids: options::OPT_o)->getValue() ==
4107	getCXX20NamedModuleOutputPath(Args, BaseInput: Input.getBaseInput()))) {
4108	D.Diag(DiagID: diag::err_drv_reduced_module_output_overrided);
4109	}
4110
4111	CmdArgs.push_back(Elt: Args.MakeArgString(
4112	Str: "-fmodule-output=" +
4113	getCXX20NamedModuleOutputPath(Args, BaseInput: Input.getBaseInput())));
4114	}
4115	}
4116
4117	// Noop if we see '-fmodules-reduced-bmi' with other translation
4118	// units than module units. This is more user friendly to allow end uers to
4119	// enable this feature without asking for help from build systems.
4120	Args.ClaimAllArgs(Id0: options::OPT_modules_reduced_bmi);
4121
4122	// We need to include the case the input file is a module file here.
4123	// Since the default compilation model for C++ module interface unit will
4124	// create temporary module file and compile the temporary module file
4125	// to get the object file. Then the `-fmodule-output` flag will be
4126	// brought to the second compilation process. So we have to claim it for
4127	// the case too.
4128	if (Input.getType() == driver::types::TY_CXXModule ||
4129	Input.getType() == driver::types::TY_PP_CXXModule ||
4130	Input.getType() == driver::types::TY_ModuleFile) {
4131	Args.ClaimAllArgs(Id0: options::OPT_fmodule_output);
4132	Args.ClaimAllArgs(Id0: options::OPT_fmodule_output_EQ);
4133	}
4134
4135	if (Args.hasArg(Ids: options::OPT_fmodules_embed_all_files))
4136	CmdArgs.push_back(Elt: "-fmodules-embed-all-files");
4137
4138	return HaveModules;
4139	}
4140
4141	static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
4142	ArgStringList &CmdArgs) {
4143	// -fsigned-char is default.
4144	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fsigned_char,
4145	Ids: options::OPT_fno_signed_char,
4146	Ids: options::OPT_funsigned_char,
4147	Ids: options::OPT_fno_unsigned_char)) {
4148	if (A->getOption().matches(ID: options::OPT_funsigned_char) ||
4149	A->getOption().matches(ID: options::OPT_fno_signed_char)) {
4150	CmdArgs.push_back(Elt: "-fno-signed-char");
4151	}
4152	} else if (!isSignedCharDefault(Triple: T)) {
4153	CmdArgs.push_back(Elt: "-fno-signed-char");
4154	}
4155
4156	// The default depends on the language standard.
4157	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fchar8__t, Ids: options::OPT_fno_char8__t);
4158
4159	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fshort_wchar,
4160	Ids: options::OPT_fno_short_wchar)) {
4161	if (A->getOption().matches(ID: options::OPT_fshort_wchar)) {
4162	CmdArgs.push_back(Elt: "-fwchar-type=short");
4163	CmdArgs.push_back(Elt: "-fno-signed-wchar");
4164	} else {
4165	bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
4166	CmdArgs.push_back(Elt: "-fwchar-type=int");
4167	if (T.isOSzOS() ||
4168	(IsARM && !(T.isOSWindows() || T.isOSNetBSD() || T.isOSOpenBSD())))
4169	CmdArgs.push_back(Elt: "-fno-signed-wchar");
4170	else
4171	CmdArgs.push_back(Elt: "-fsigned-wchar");
4172	}
4173	} else if (T.isOSzOS())
4174	CmdArgs.push_back(Elt: "-fno-signed-wchar");
4175	}
4176
4177	static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
4178	const llvm::Triple &T, const ArgList &Args,
4179	ObjCRuntime &Runtime, bool InferCovariantReturns,
4180	const InputInfo &Input, ArgStringList &CmdArgs) {
4181	const llvm::Triple::ArchType Arch = TC.getArch();
4182
4183	// -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
4184	// is the default. Except for deployment target of 10.5, next runtime is
4185	// always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
4186	if (Runtime.isNonFragile()) {
4187	if (!Args.hasFlag(Pos: options::OPT_fobjc_legacy_dispatch,
4188	Neg: options::OPT_fno_objc_legacy_dispatch,
4189	Default: Runtime.isLegacyDispatchDefaultForArch(Arch))) {
4190	if (TC.UseObjCMixedDispatch())
4191	CmdArgs.push_back(Elt: "-fobjc-dispatch-method=mixed");
4192	else
4193	CmdArgs.push_back(Elt: "-fobjc-dispatch-method=non-legacy");
4194	}
4195	}
4196
4197	// When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
4198	// to do Array/Dictionary subscripting by default.
4199	if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
4200	Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
4201	CmdArgs.push_back(Elt: "-fobjc-subscripting-legacy-runtime");
4202
4203	// Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
4204	// NOTE: This logic is duplicated in ToolChains.cpp.
4205	if (isObjCAutoRefCount(Args)) {
4206	TC.CheckObjCARC();
4207
4208	CmdArgs.push_back(Elt: "-fobjc-arc");
4209
4210	// FIXME: It seems like this entire block, and several around it should be
4211	// wrapped in isObjC, but for now we just use it here as this is where it
4212	// was being used previously.
4213	if (types::isCXX(Id: Input.getType()) && types::isObjC(Id: Input.getType())) {
4214	if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
4215	CmdArgs.push_back(Elt: "-fobjc-arc-cxxlib=libc++");
4216	else
4217	CmdArgs.push_back(Elt: "-fobjc-arc-cxxlib=libstdc++");
4218	}
4219
4220	// Allow the user to enable full exceptions code emission.
4221	// We default off for Objective-C, on for Objective-C++.
4222	if (Args.hasFlag(Pos: options::OPT_fobjc_arc_exceptions,
4223	Neg: options::OPT_fno_objc_arc_exceptions,
4224	/*Default=*/types::isCXX(Id: Input.getType())))
4225	CmdArgs.push_back(Elt: "-fobjc-arc-exceptions");
4226	}
4227
4228	// Silence warning for full exception code emission options when explicitly
4229	// set to use no ARC.
4230	if (Args.hasArg(Ids: options::OPT_fno_objc_arc)) {
4231	Args.ClaimAllArgs(Id0: options::OPT_fobjc_arc_exceptions);
4232	Args.ClaimAllArgs(Id0: options::OPT_fno_objc_arc_exceptions);
4233	}
4234
4235	// Allow the user to control whether messages can be converted to runtime
4236	// functions.
4237	if (types::isObjC(Id: Input.getType())) {
4238	auto *Arg = Args.getLastArg(
4239	Ids: options::OPT_fobjc_convert_messages_to_runtime_calls,
4240	Ids: options::OPT_fno_objc_convert_messages_to_runtime_calls);
4241	if (Arg &&
4242	Arg->getOption().matches(
4243	ID: options::OPT_fno_objc_convert_messages_to_runtime_calls))
4244	CmdArgs.push_back(Elt: "-fno-objc-convert-messages-to-runtime-calls");
4245	}
4246
4247	// -fobjc-infer-related-result-type is the default, except in the Objective-C
4248	// rewriter.
4249	if (InferCovariantReturns)
4250	CmdArgs.push_back(Elt: "-fno-objc-infer-related-result-type");
4251
4252	// Pass down -fobjc-weak or -fno-objc-weak if present.
4253	if (types::isObjC(Id: Input.getType())) {
4254	auto WeakArg =
4255	Args.getLastArg(Ids: options::OPT_fobjc_weak, Ids: options::OPT_fno_objc_weak);
4256	if (!WeakArg) {
4257	// nothing to do
4258	} else if (!Runtime.allowsWeak()) {
4259	if (WeakArg->getOption().matches(ID: options::OPT_fobjc_weak))
4260	D.Diag(DiagID: diag::err_objc_weak_unsupported);
4261	} else {
4262	WeakArg->render(Args, Output&: CmdArgs);
4263	}
4264	}
4265
4266	if (Args.hasArg(Ids: options::OPT_fobjc_disable_direct_methods_for_testing))
4267	CmdArgs.push_back(Elt: "-fobjc-disable-direct-methods-for-testing");
4268	}
4269
4270	static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
4271	ArgStringList &CmdArgs) {
4272	bool CaretDefault = true;
4273	bool ColumnDefault = true;
4274
4275	if (const Arg *A = Args.getLastArg(Ids: options::OPT__SLASH_diagnostics_classic,
4276	Ids: options::OPT__SLASH_diagnostics_column,
4277	Ids: options::OPT__SLASH_diagnostics_caret)) {
4278	switch (A->getOption().getID()) {
4279	case options::OPT__SLASH_diagnostics_caret:
4280	CaretDefault = true;
4281	ColumnDefault = true;
4282	break;
4283	case options::OPT__SLASH_diagnostics_column:
4284	CaretDefault = false;
4285	ColumnDefault = true;
4286	break;
4287	case options::OPT__SLASH_diagnostics_classic:
4288	CaretDefault = false;
4289	ColumnDefault = false;
4290	break;
4291	}
4292	}
4293
4294	// -fcaret-diagnostics is default.
4295	if (!Args.hasFlag(Pos: options::OPT_fcaret_diagnostics,
4296	Neg: options::OPT_fno_caret_diagnostics, Default: CaretDefault))
4297	CmdArgs.push_back(Elt: "-fno-caret-diagnostics");
4298
4299	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fdiagnostics_fixit_info,
4300	Neg: options::OPT_fno_diagnostics_fixit_info);
4301	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fdiagnostics_show_option,
4302	Neg: options::OPT_fno_diagnostics_show_option);
4303
4304	if (const Arg *A =
4305	Args.getLastArg(Ids: options::OPT_fdiagnostics_show_category_EQ)) {
4306	CmdArgs.push_back(Elt: "-fdiagnostics-show-category");
4307	CmdArgs.push_back(Elt: A->getValue());
4308	}
4309
4310	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fdiagnostics_show_hotness,
4311	Neg: options::OPT_fno_diagnostics_show_hotness);
4312
4313	if (const Arg *A =
4314	Args.getLastArg(Ids: options::OPT_fdiagnostics_hotness_threshold_EQ)) {
4315	std::string Opt =
4316	std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
4317	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Opt));
4318	}
4319
4320	if (const Arg *A =
4321	Args.getLastArg(Ids: options::OPT_fdiagnostics_misexpect_tolerance_EQ)) {
4322	std::string Opt =
4323	std::string("-fdiagnostics-misexpect-tolerance=") + A->getValue();
4324	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Opt));
4325	}
4326
4327	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fdiagnostics_format_EQ)) {
4328	CmdArgs.push_back(Elt: "-fdiagnostics-format");
4329	CmdArgs.push_back(Elt: A->getValue());
4330	if (StringRef(A->getValue()) == "sarif" ||
4331	StringRef(A->getValue()) == "SARIF")
4332	D.Diag(DiagID: diag::warn_drv_sarif_format_unstable);
4333	}
4334
4335	if (const Arg *A = Args.getLastArg(
4336	Ids: options::OPT_fdiagnostics_show_note_include_stack,
4337	Ids: options::OPT_fno_diagnostics_show_note_include_stack)) {
4338	const Option &O = A->getOption();
4339	if (O.matches(ID: options::OPT_fdiagnostics_show_note_include_stack))
4340	CmdArgs.push_back(Elt: "-fdiagnostics-show-note-include-stack");
4341	else
4342	CmdArgs.push_back(Elt: "-fno-diagnostics-show-note-include-stack");
4343	}
4344
4345	handleColorDiagnosticsArgs(D, Args, CmdArgs);
4346
4347	if (Args.hasArg(Ids: options::OPT_fansi_escape_codes))
4348	CmdArgs.push_back(Elt: "-fansi-escape-codes");
4349
4350	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fshow_source_location,
4351	Neg: options::OPT_fno_show_source_location);
4352
4353	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fdiagnostics_show_line_numbers,
4354	Neg: options::OPT_fno_diagnostics_show_line_numbers);
4355
4356	if (Args.hasArg(Ids: options::OPT_fdiagnostics_absolute_paths))
4357	CmdArgs.push_back(Elt: "-fdiagnostics-absolute-paths");
4358
4359	if (!Args.hasFlag(Pos: options::OPT_fshow_column, Neg: options::OPT_fno_show_column,
4360	Default: ColumnDefault))
4361	CmdArgs.push_back(Elt: "-fno-show-column");
4362
4363	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fspell_checking,
4364	Neg: options::OPT_fno_spell_checking);
4365
4366	Args.addLastArg(Output&: CmdArgs, Ids: options::OPT_warning_suppression_mappings_EQ);
4367	}
4368
4369	DwarfFissionKind tools::getDebugFissionKind(const Driver &D,
4370	const ArgList &Args, Arg *&Arg) {
4371	Arg = Args.getLastArg(Ids: options::OPT_gsplit_dwarf, Ids: options::OPT_gsplit_dwarf_EQ,
4372	Ids: options::OPT_gno_split_dwarf);
4373	if (!Arg || Arg->getOption().matches(ID: options::OPT_gno_split_dwarf))
4374	return DwarfFissionKind::None;
4375
4376	if (Arg->getOption().matches(ID: options::OPT_gsplit_dwarf))
4377	return DwarfFissionKind::Split;
4378
4379	StringRef Value = Arg->getValue();
4380	if (Value == "split")
4381	return DwarfFissionKind::Split;
4382	if (Value == "single")
4383	return DwarfFissionKind::Single;
4384
4385	D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
4386	<< Arg->getSpelling() << Arg->getValue();
4387	return DwarfFissionKind::None;
4388	}
4389
4390	static void renderDwarfFormat(const Driver &D, const llvm::Triple &T,
4391	const ArgList &Args, ArgStringList &CmdArgs,
4392	unsigned DwarfVersion) {
4393	auto *DwarfFormatArg =
4394	Args.getLastArg(Ids: options::OPT_gdwarf64, Ids: options::OPT_gdwarf32);
4395	if (!DwarfFormatArg)
4396	return;
4397
4398	if (DwarfFormatArg->getOption().matches(ID: options::OPT_gdwarf64)) {
4399	if (DwarfVersion < 3)
4400	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
4401	<< DwarfFormatArg->getAsString(Args) << "DWARFv3 or greater";
4402	else if (!T.isArch64Bit())
4403	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
4404	<< DwarfFormatArg->getAsString(Args) << "64 bit architecture";
4405	else if (!T.isOSBinFormatELF())
4406	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
4407	<< DwarfFormatArg->getAsString(Args) << "ELF platforms";
4408	}
4409
4410	DwarfFormatArg->render(Args, Output&: CmdArgs);
4411	}
4412
4413	static void
4414	renderDebugOptions(const ToolChain &TC, const Driver &D, const llvm::Triple &T,
4415	const ArgList &Args, bool IRInput, ArgStringList &CmdArgs,
4416	const InputInfo &Output,
4417	llvm::codegenoptions::DebugInfoKind &DebugInfoKind,
4418	DwarfFissionKind &DwarfFission) {
4419	if (Args.hasFlag(Pos: options::OPT_fdebug_info_for_profiling,
4420	Neg: options::OPT_fno_debug_info_for_profiling, Default: false) &&
4421	checkDebugInfoOption(
4422	A: Args.getLastArg(Ids: options::OPT_fdebug_info_for_profiling), Args, D, TC))
4423	CmdArgs.push_back(Elt: "-fdebug-info-for-profiling");
4424
4425	// The 'g' groups options involve a somewhat intricate sequence of decisions
4426	// about what to pass from the driver to the frontend, but by the time they
4427	// reach cc1 they've been factored into three well-defined orthogonal choices:
4428	// * what level of debug info to generate
4429	// * what dwarf version to write
4430	// * what debugger tuning to use
4431	// This avoids having to monkey around further in cc1 other than to disable
4432	// codeview if not running in a Windows environment. Perhaps even that
4433	// decision should be made in the driver as well though.
4434	llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
4435
4436	bool SplitDWARFInlining =
4437	Args.hasFlag(Pos: options::OPT_fsplit_dwarf_inlining,
4438	Neg: options::OPT_fno_split_dwarf_inlining, Default: false);
4439
4440	// Normally -gsplit-dwarf is only useful with -gN. For IR input, Clang does
4441	// object file generation and no IR generation, -gN should not be needed. So
4442	// allow -gsplit-dwarf with either -gN or IR input.
4443	if (IRInput || Args.hasArg(Ids: options::OPT_g_Group)) {
4444	Arg *SplitDWARFArg;
4445	DwarfFission = getDebugFissionKind(D, Args, Arg&: SplitDWARFArg);
4446	if (DwarfFission != DwarfFissionKind::None &&
4447	!checkDebugInfoOption(A: SplitDWARFArg, Args, D, TC)) {
4448	DwarfFission = DwarfFissionKind::None;
4449	SplitDWARFInlining = false;
4450	}
4451	}
4452	if (const Arg *A = Args.getLastArg(Ids: options::OPT_g_Group)) {
4453	DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;
4454
4455	// If the last option explicitly specified a debug-info level, use it.
4456	if (checkDebugInfoOption(A, Args, D, TC) &&
4457	A->getOption().matches(ID: options::OPT_gN_Group)) {
4458	DebugInfoKind = debugLevelToInfoKind(A: *A);
4459	// For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
4460	// complicated if you've disabled inline info in the skeleton CUs
4461	// (SplitDWARFInlining) - then there's value in composing split-dwarf and
4462	// line-tables-only, so let those compose naturally in that case.
4463	if (DebugInfoKind == llvm::codegenoptions::NoDebugInfo ||
4464	DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly ||
4465	(DebugInfoKind == llvm::codegenoptions::DebugLineTablesOnly &&
4466	SplitDWARFInlining))
4467	DwarfFission = DwarfFissionKind::None;
4468	}
4469	}
4470
4471	// If a debugger tuning argument appeared, remember it.
4472	bool HasDebuggerTuning = false;
4473	if (const Arg *A =
4474	Args.getLastArg(Ids: options::OPT_gTune_Group, Ids: options::OPT_ggdbN_Group)) {
4475	HasDebuggerTuning = true;
4476	if (checkDebugInfoOption(A, Args, D, TC)) {
4477	if (A->getOption().matches(ID: options::OPT_glldb))
4478	DebuggerTuning = llvm::DebuggerKind::LLDB;
4479	else if (A->getOption().matches(ID: options::OPT_gsce))
4480	DebuggerTuning = llvm::DebuggerKind::SCE;
4481	else if (A->getOption().matches(ID: options::OPT_gdbx))
4482	DebuggerTuning = llvm::DebuggerKind::DBX;
4483	else
4484	DebuggerTuning = llvm::DebuggerKind::GDB;
4485	}
4486	}
4487
4488	// If a -gdwarf argument appeared, remember it.
4489	bool EmitDwarf = false;
4490	if (const Arg *A = getDwarfNArg(Args))
4491	EmitDwarf = checkDebugInfoOption(A, Args, D, TC);
4492
4493	bool EmitCodeView = false;
4494	if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcodeview))
4495	EmitCodeView = checkDebugInfoOption(A, Args, D, TC);
4496
4497	// If the user asked for debug info but did not explicitly specify -gcodeview
4498	// or -gdwarf, ask the toolchain for the default format.
4499	if (!EmitCodeView && !EmitDwarf &&
4500	DebugInfoKind != llvm::codegenoptions::NoDebugInfo) {
4501	switch (TC.getDefaultDebugFormat()) {
4502	case llvm::codegenoptions::DIF_CodeView:
4503	EmitCodeView = true;
4504	break;
4505	case llvm::codegenoptions::DIF_DWARF:
4506	EmitDwarf = true;
4507	break;
4508	}
4509	}
4510
4511	unsigned RequestedDWARFVersion = 0; // DWARF version requested by the user
4512	unsigned EffectiveDWARFVersion = 0; // DWARF version TC can generate. It may
4513	// be lower than what the user wanted.
4514	if (EmitDwarf) {
4515	RequestedDWARFVersion = getDwarfVersion(TC, Args);
4516	// Clamp effective DWARF version to the max supported by the toolchain.
4517	EffectiveDWARFVersion =
4518	std::min(a: RequestedDWARFVersion, b: TC.getMaxDwarfVersion());
4519	} else {
4520	Args.ClaimAllArgs(Id0: options::OPT_fdebug_default_version);
4521	}
4522
4523	// -gline-directives-only supported only for the DWARF debug info.
4524	if (RequestedDWARFVersion == 0 &&
4525	DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly)
4526	DebugInfoKind = llvm::codegenoptions::NoDebugInfo;
4527
4528	// strict DWARF is set to false by default. But for DBX, we need it to be set
4529	// as true by default.
4530	if (const Arg *A = Args.getLastArg(Ids: options::OPT_gstrict_dwarf))
4531	(void)checkDebugInfoOption(A, Args, D, TC);
4532	if (Args.hasFlag(Pos: options::OPT_gstrict_dwarf, Neg: options::OPT_gno_strict_dwarf,
4533	Default: DebuggerTuning == llvm::DebuggerKind::DBX))
4534	CmdArgs.push_back(Elt: "-gstrict-dwarf");
4535
4536	// And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
4537	Args.ClaimAllArgs(Id0: options::OPT_g_flags_Group);
4538
4539	// Column info is included by default for everything except SCE and
4540	// CodeView if not use sampling PGO. Clang doesn't track end columns, just
4541	// starting columns, which, in theory, is fine for CodeView (and PDB). In
4542	// practice, however, the Microsoft debuggers don't handle missing end columns
4543	// well, and the AIX debugger DBX also doesn't handle the columns well, so
4544	// it's better not to include any column info.
4545	if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcolumn_info))
4546	(void)checkDebugInfoOption(A, Args, D, TC);
4547	if (!Args.hasFlag(Pos: options::OPT_gcolumn_info, Neg: options::OPT_gno_column_info,
4548	Default: !(EmitCodeView && !getLastProfileSampleUseArg(Args)) &&
4549	(DebuggerTuning != llvm::DebuggerKind::SCE &&
4550	DebuggerTuning != llvm::DebuggerKind::DBX)))
4551	CmdArgs.push_back(Elt: "-gno-column-info");
4552
4553	// FIXME: Move backend command line options to the module.
4554	if (Args.hasFlag(Pos: options::OPT_gmodules, Neg: options::OPT_gno_modules, Default: false)) {
4555	// If -gline-tables-only or -gline-directives-only is the last option it
4556	// wins.
4557	if (checkDebugInfoOption(A: Args.getLastArg(Ids: options::OPT_gmodules), Args, D,
4558	TC)) {
4559	if (DebugInfoKind != llvm::codegenoptions::DebugLineTablesOnly &&
4560	DebugInfoKind != llvm::codegenoptions::DebugDirectivesOnly) {
4561	DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;
4562	CmdArgs.push_back(Elt: "-dwarf-ext-refs");
4563	CmdArgs.push_back(Elt: "-fmodule-format=obj");
4564	}
4565	}
4566	}
4567
4568	if (T.isOSBinFormatELF() && SplitDWARFInlining)
4569	CmdArgs.push_back(Elt: "-fsplit-dwarf-inlining");
4570
4571	// After we've dealt with all combinations of things that could
4572	// make DebugInfoKind be other than None or DebugLineTablesOnly,
4573	// figure out if we need to "upgrade" it to standalone debug info.
4574	// We parse these two '-f' options whether or not they will be used,
4575	// to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
4576	bool NeedFullDebug = Args.hasFlag(
4577	Pos: options::OPT_fstandalone_debug, Neg: options::OPT_fno_standalone_debug,
4578	Default: DebuggerTuning == llvm::DebuggerKind::LLDB ||
4579	TC.GetDefaultStandaloneDebug());
4580	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fstandalone_debug))
4581	(void)checkDebugInfoOption(A, Args, D, TC);
4582
4583	if (DebugInfoKind == llvm::codegenoptions::LimitedDebugInfo ||
4584	DebugInfoKind == llvm::codegenoptions::DebugInfoConstructor) {
4585	if (Args.hasFlag(Pos: options::OPT_fno_eliminate_unused_debug_types,
4586	Neg: options::OPT_feliminate_unused_debug_types, Default: false))
4587	DebugInfoKind = llvm::codegenoptions::UnusedTypeInfo;
4588	else if (NeedFullDebug)
4589	DebugInfoKind = llvm::codegenoptions::FullDebugInfo;
4590	}
4591
4592	if (Args.hasFlag(Pos: options::OPT_gembed_source, Neg: options::OPT_gno_embed_source,
4593	Default: false)) {
4594	// Source embedding is a vendor extension to DWARF v5. By now we have
4595	// checked if a DWARF version was stated explicitly, and have otherwise
4596	// fallen back to the target default, so if this is still not at least 5
4597	// we emit an error.
4598	const Arg *A = Args.getLastArg(Ids: options::OPT_gembed_source);
4599	if (RequestedDWARFVersion < 5)
4600	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
4601	<< A->getAsString(Args) << "-gdwarf-5";
4602	else if (EffectiveDWARFVersion < 5)
4603	// The toolchain has reduced allowed dwarf version, so we can't enable
4604	// -gembed-source.
4605	D.Diag(DiagID: diag::warn_drv_dwarf_version_limited_by_target)
4606	<< A->getAsString(Args) << TC.getTripleString() << 5
4607	<< EffectiveDWARFVersion;
4608	else if (checkDebugInfoOption(A, Args, D, TC))
4609	CmdArgs.push_back(Elt: "-gembed-source");
4610	}
4611
4612	if (Args.hasFlag(Pos: options::OPT_gkey_instructions,
4613	Neg: options::OPT_gno_key_instructions, Default: false))
4614	CmdArgs.push_back(Elt: "-gkey-instructions");
4615
4616	if (EmitCodeView) {
4617	CmdArgs.push_back(Elt: "-gcodeview");
4618
4619	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_gcodeview_ghash,
4620	Neg: options::OPT_gno_codeview_ghash);
4621
4622	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_gcodeview_command_line,
4623	Neg: options::OPT_gno_codeview_command_line);
4624	}
4625
4626	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_ginline_line_tables,
4627	Neg: options::OPT_gno_inline_line_tables);
4628
4629	// When emitting remarks, we need at least debug lines in the output.
4630	if (willEmitRemarks(Args) &&
4631	DebugInfoKind <= llvm::codegenoptions::DebugDirectivesOnly)
4632	DebugInfoKind = llvm::codegenoptions::DebugLineTablesOnly;
4633
4634	// Adjust the debug info kind for the given toolchain.
4635	TC.adjustDebugInfoKind(DebugInfoKind, Args);
4636
4637	// On AIX, the debugger tuning option can be omitted if it is not explicitly
4638	// set.
4639	RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion: EffectiveDWARFVersion,
4640	DebuggerTuning: T.isOSAIX() && !HasDebuggerTuning
4641	? llvm::DebuggerKind::Default
4642	: DebuggerTuning);
4643
4644	// -fdebug-macro turns on macro debug info generation.
4645	if (Args.hasFlag(Pos: options::OPT_fdebug_macro, Neg: options::OPT_fno_debug_macro,
4646	Default: false))
4647	if (checkDebugInfoOption(A: Args.getLastArg(Ids: options::OPT_fdebug_macro), Args,
4648	D, TC))
4649	CmdArgs.push_back(Elt: "-debug-info-macro");
4650
4651	// -ggnu-pubnames turns on gnu style pubnames in the backend.
4652	const auto *PubnamesArg =
4653	Args.getLastArg(Ids: options::OPT_ggnu_pubnames, Ids: options::OPT_gno_gnu_pubnames,
4654	Ids: options::OPT_gpubnames, Ids: options::OPT_gno_pubnames);
4655	if (DwarfFission != DwarfFissionKind::None ||
4656	(PubnamesArg && checkDebugInfoOption(A: PubnamesArg, Args, D, TC))) {
4657	const bool OptionSet =
4658	(PubnamesArg &&
4659	(PubnamesArg->getOption().matches(ID: options::OPT_gpubnames) ||
4660	PubnamesArg->getOption().matches(ID: options::OPT_ggnu_pubnames)));
4661	if ((DebuggerTuning != llvm::DebuggerKind::LLDB || OptionSet) &&
4662	(!PubnamesArg ||
4663	(!PubnamesArg->getOption().matches(ID: options::OPT_gno_gnu_pubnames) &&
4664	!PubnamesArg->getOption().matches(ID: options::OPT_gno_pubnames))))
4665	CmdArgs.push_back(Elt: PubnamesArg && PubnamesArg->getOption().matches(
4666	ID: options::OPT_gpubnames)
4667	? "-gpubnames"
4668	: "-ggnu-pubnames");
4669	}
4670	const auto *SimpleTemplateNamesArg =
4671	Args.getLastArg(Ids: options::OPT_gsimple_template_names,
4672	Ids: options::OPT_gno_simple_template_names);
4673	bool ForwardTemplateParams = DebuggerTuning == llvm::DebuggerKind::SCE;
4674	if (SimpleTemplateNamesArg &&
4675	checkDebugInfoOption(A: SimpleTemplateNamesArg, Args, D, TC)) {
4676	const auto &Opt = SimpleTemplateNamesArg->getOption();
4677	if (Opt.matches(ID: options::OPT_gsimple_template_names)) {
4678	ForwardTemplateParams = true;
4679	CmdArgs.push_back(Elt: "-gsimple-template-names=simple");
4680	}
4681	}
4682
4683	// Emit DW_TAG_template_alias for template aliases? True by default for SCE.
4684	bool UseDebugTemplateAlias =
4685	DebuggerTuning == llvm::DebuggerKind::SCE && RequestedDWARFVersion >= 4;
4686	if (const auto *DebugTemplateAlias = Args.getLastArg(
4687	Ids: options::OPT_gtemplate_alias, Ids: options::OPT_gno_template_alias)) {
4688	// DW_TAG_template_alias is only supported from DWARFv5 but if a user
4689	// asks for it we should let them have it (if the target supports it).
4690	if (checkDebugInfoOption(A: DebugTemplateAlias, Args, D, TC)) {
4691	const auto &Opt = DebugTemplateAlias->getOption();
4692	UseDebugTemplateAlias = Opt.matches(ID: options::OPT_gtemplate_alias);
4693	}
4694	}
4695	if (UseDebugTemplateAlias)
4696	CmdArgs.push_back(Elt: "-gtemplate-alias");
4697
4698	if (const Arg *A = Args.getLastArg(Ids: options::OPT_gsrc_hash_EQ)) {
4699	StringRef v = A->getValue();
4700	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-gsrc-hash=" + v));
4701	}
4702
4703	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fdebug_ranges_base_address,
4704	Neg: options::OPT_fno_debug_ranges_base_address);
4705
4706	// -gdwarf-aranges turns on the emission of the aranges section in the
4707	// backend.
4708	if (const Arg *A = Args.getLastArg(Ids: options::OPT_gdwarf_aranges);
4709	A && checkDebugInfoOption(A, Args, D, TC)) {
4710	CmdArgs.push_back(Elt: "-mllvm");
4711	CmdArgs.push_back(Elt: "-generate-arange-section");
4712	}
4713
4714	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fforce_dwarf_frame,
4715	Neg: options::OPT_fno_force_dwarf_frame);
4716
4717	bool EnableTypeUnits = false;
4718	if (Args.hasFlag(Pos: options::OPT_fdebug_types_section,
4719	Neg: options::OPT_fno_debug_types_section, Default: false)) {
4720	if (!(T.isOSBinFormatELF() || T.isOSBinFormatWasm())) {
4721	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
4722	<< Args.getLastArg(Ids: options::OPT_fdebug_types_section)
4723	->getAsString(Args)
4724	<< T.getTriple();
4725	} else if (checkDebugInfoOption(
4726	A: Args.getLastArg(Ids: options::OPT_fdebug_types_section), Args, D,
4727	TC)) {
4728	EnableTypeUnits = true;
4729	CmdArgs.push_back(Elt: "-mllvm");
4730	CmdArgs.push_back(Elt: "-generate-type-units");
4731	}
4732	}
4733
4734	if (const Arg *A =
4735	Args.getLastArg(Ids: options::OPT_gomit_unreferenced_methods,
4736	Ids: options::OPT_gno_omit_unreferenced_methods))
4737	(void)checkDebugInfoOption(A, Args, D, TC);
4738	if (Args.hasFlag(Pos: options::OPT_gomit_unreferenced_methods,
4739	Neg: options::OPT_gno_omit_unreferenced_methods, Default: false) &&
4740	(DebugInfoKind == llvm::codegenoptions::DebugInfoConstructor ||
4741	DebugInfoKind == llvm::codegenoptions::LimitedDebugInfo) &&
4742	!EnableTypeUnits) {
4743	CmdArgs.push_back(Elt: "-gomit-unreferenced-methods");
4744	}
4745
4746	// To avoid join/split of directory+filename, the integrated assembler prefers
4747	// the directory form of .file on all DWARF versions. GNU as doesn't allow the
4748	// form before DWARF v5.
4749	if (!Args.hasFlag(Pos: options::OPT_fdwarf_directory_asm,
4750	Neg: options::OPT_fno_dwarf_directory_asm,
4751	Default: TC.useIntegratedAs() || EffectiveDWARFVersion >= 5))
4752	CmdArgs.push_back(Elt: "-fno-dwarf-directory-asm");
4753
4754	// Decide how to render forward declarations of template instantiations.
4755	// SCE wants full descriptions, others just get them in the name.
4756	if (ForwardTemplateParams)
4757	CmdArgs.push_back(Elt: "-debug-forward-template-params");
4758
4759	// Do we need to explicitly import anonymous namespaces into the parent
4760	// scope?
4761	if (DebuggerTuning == llvm::DebuggerKind::SCE)
4762	CmdArgs.push_back(Elt: "-dwarf-explicit-import");
4763
4764	renderDwarfFormat(D, T, Args, CmdArgs, DwarfVersion: EffectiveDWARFVersion);
4765	RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
4766
4767	// This controls whether or not we perform JustMyCode instrumentation.
4768	if (Args.hasFlag(Pos: options::OPT_fjmc, Neg: options::OPT_fno_jmc, Default: false)) {
4769	if (TC.getTriple().isOSBinFormatELF() ||
4770	TC.getTriple().isWindowsMSVCEnvironment()) {
4771	if (DebugInfoKind >= llvm::codegenoptions::DebugInfoConstructor)
4772	CmdArgs.push_back(Elt: "-fjmc");
4773	else if (D.IsCLMode())
4774	D.Diag(DiagID: clang::diag::warn_drv_jmc_requires_debuginfo) << "/JMC"
4775	<< "'/Zi', '/Z7'";
4776	else
4777	D.Diag(DiagID: clang::diag::warn_drv_jmc_requires_debuginfo) << "-fjmc"
4778	<< "-g";
4779	} else {
4780	D.Diag(DiagID: clang::diag::warn_drv_fjmc_for_elf_only);
4781	}
4782	}
4783
4784	// Add in -fdebug-compilation-dir if necessary.
4785	const char *DebugCompilationDir =
4786	addDebugCompDirArg(Args, CmdArgs, VFS: D.getVFS());
4787
4788	addDebugPrefixMapArg(D, TC, Args, CmdArgs);
4789
4790	// Add the output path to the object file for CodeView debug infos.
4791	if (EmitCodeView && Output.isFilename())
4792	addDebugObjectName(Args, CmdArgs, DebugCompilationDir,
4793	OutputFileName: Output.getFilename());
4794	}
4795
4796	static void ProcessVSRuntimeLibrary(const ToolChain &TC, const ArgList &Args,
4797	ArgStringList &CmdArgs) {
4798	unsigned RTOptionID = options::OPT__SLASH_MT;
4799
4800	if (Args.hasArg(Ids: options::OPT__SLASH_LDd))
4801	// The /LDd option implies /MTd. The dependent lib part can be overridden,
4802	// but defining _DEBUG is sticky.
4803	RTOptionID = options::OPT__SLASH_MTd;
4804
4805	if (Arg *A = Args.getLastArg(Ids: options::OPT__SLASH_M_Group))
4806	RTOptionID = A->getOption().getID();
4807
4808	if (Arg *A = Args.getLastArg(Ids: options::OPT_fms_runtime_lib_EQ)) {
4809	RTOptionID = llvm::StringSwitch<unsigned>(A->getValue())
4810	.Case(S: "static", Value: options::OPT__SLASH_MT)
4811	.Case(S: "static_dbg", Value: options::OPT__SLASH_MTd)
4812	.Case(S: "dll", Value: options::OPT__SLASH_MD)
4813	.Case(S: "dll_dbg", Value: options::OPT__SLASH_MDd)
4814	.Default(Value: options::OPT__SLASH_MT);
4815	}
4816
4817	StringRef FlagForCRT;
4818	switch (RTOptionID) {
4819	case options::OPT__SLASH_MD:
4820	if (Args.hasArg(Ids: options::OPT__SLASH_LDd))
4821	CmdArgs.push_back(Elt: "-D_DEBUG");
4822	CmdArgs.push_back(Elt: "-D_MT");
4823	CmdArgs.push_back(Elt: "-D_DLL");
4824	FlagForCRT = "--dependent-lib=msvcrt";
4825	break;
4826	case options::OPT__SLASH_MDd:
4827	CmdArgs.push_back(Elt: "-D_DEBUG");
4828	CmdArgs.push_back(Elt: "-D_MT");
4829	CmdArgs.push_back(Elt: "-D_DLL");
4830	FlagForCRT = "--dependent-lib=msvcrtd";
4831	break;
4832	case options::OPT__SLASH_MT:
4833	if (Args.hasArg(Ids: options::OPT__SLASH_LDd))
4834	CmdArgs.push_back(Elt: "-D_DEBUG");
4835	CmdArgs.push_back(Elt: "-D_MT");
4836	CmdArgs.push_back(Elt: "-flto-visibility-public-std");
4837	FlagForCRT = "--dependent-lib=libcmt";
4838	break;
4839	case options::OPT__SLASH_MTd:
4840	CmdArgs.push_back(Elt: "-D_DEBUG");
4841	CmdArgs.push_back(Elt: "-D_MT");
4842	CmdArgs.push_back(Elt: "-flto-visibility-public-std");
4843	FlagForCRT = "--dependent-lib=libcmtd";
4844	break;
4845	default:
4846	llvm_unreachable("Unexpected option ID.");
4847	}
4848
4849	if (Args.hasArg(Ids: options::OPT_fms_omit_default_lib)) {
4850	CmdArgs.push_back(Elt: "-D_VC_NODEFAULTLIB");
4851	} else {
4852	CmdArgs.push_back(Elt: FlagForCRT.data());
4853
4854	// This provides POSIX compatibility (maps 'open' to '_open'), which most
4855	// users want. The /Za flag to cl.exe turns this off, but it's not
4856	// implemented in clang.
4857	CmdArgs.push_back(Elt: "--dependent-lib=oldnames");
4858	}
4859
4860	// All Arm64EC object files implicitly add softintrin.lib. This is necessary
4861	// even if the file doesn't actually refer to any of the routines because
4862	// the CRT itself has incomplete dependency markings.
4863	if (TC.getTriple().isWindowsArm64EC())
4864	CmdArgs.push_back(Elt: "--dependent-lib=softintrin");
4865	}
4866
4867	void Clang::ConstructJob(Compilation &C, const JobAction &JA,
4868	const InputInfo &Output, const InputInfoList &Inputs,
4869	const ArgList &Args, const char *LinkingOutput) const {
4870	const auto &TC = getToolChain();
4871	const llvm::Triple &RawTriple = TC.getTriple();
4872	const llvm::Triple &Triple = TC.getEffectiveTriple();
4873	const std::string &TripleStr = Triple.getTriple();
4874
4875	bool KernelOrKext =
4876	Args.hasArg(Ids: options::OPT_mkernel, Ids: options::OPT_fapple_kext);
4877	const Driver &D = TC.getDriver();
4878	ArgStringList CmdArgs;
4879
4880	assert(Inputs.size() >= 1 && "Must have at least one input.");
4881	// CUDA/HIP compilation may have multiple inputs (source file + results of
4882	// device-side compilations). OpenMP device jobs also take the host IR as a
4883	// second input. Module precompilation accepts a list of header files to
4884	// include as part of the module. API extraction accepts a list of header
4885	// files whose API information is emitted in the output. All other jobs are
4886	// expected to have exactly one input. SYCL compilation only expects a
4887	// single input.
4888	bool IsCuda = JA.isOffloading(OKind: Action::OFK_Cuda);
4889	bool IsCudaDevice = JA.isDeviceOffloading(OKind: Action::OFK_Cuda);
4890	bool IsHIP = JA.isOffloading(OKind: Action::OFK_HIP);
4891	bool IsHIPDevice = JA.isDeviceOffloading(OKind: Action::OFK_HIP);
4892	bool IsSYCL = JA.isOffloading(OKind: Action::OFK_SYCL);
4893	bool IsSYCLDevice = JA.isDeviceOffloading(OKind: Action::OFK_SYCL);
4894	bool IsOpenMPDevice = JA.isDeviceOffloading(OKind: Action::OFK_OpenMP);
4895	bool IsExtractAPI = isa<ExtractAPIJobAction>(Val: JA);
4896	bool IsDeviceOffloadAction = !(JA.isDeviceOffloading(OKind: Action::OFK_None) ||
4897	JA.isDeviceOffloading(OKind: Action::OFK_Host));
4898	bool IsHostOffloadingAction =
4899	JA.isHostOffloading(OKind: Action::OFK_OpenMP) ||
4900	JA.isHostOffloading(OKind: Action::OFK_SYCL) ||
4901	(JA.isHostOffloading(OKind: C.getActiveOffloadKinds()) &&
4902	Args.hasFlag(Pos: options::OPT_offload_new_driver,
4903	Neg: options::OPT_no_offload_new_driver,
4904	Default: C.isOffloadingHostKind(Kind: Action::OFK_Cuda)));
4905
4906	bool IsRDCMode =
4907	Args.hasFlag(Pos: options::OPT_fgpu_rdc, Neg: options::OPT_fno_gpu_rdc, Default: false);
4908
4909	auto LTOMode = IsDeviceOffloadAction ? D.getOffloadLTOMode() : D.getLTOMode();
4910	bool IsUsingLTO = LTOMode != LTOK_None;
4911
4912	// Extract API doesn't have a main input file, so invent a fake one as a
4913	// placeholder.
4914	InputInfo ExtractAPIPlaceholderInput(Inputs[0].getType(), "extract-api",
4915	"extract-api");
4916
4917	const InputInfo &Input =
4918	IsExtractAPI ? ExtractAPIPlaceholderInput : Inputs[0];
4919
4920	InputInfoList ExtractAPIInputs;
4921	InputInfoList HostOffloadingInputs;
4922	const InputInfo *CudaDeviceInput = nullptr;
4923	const InputInfo *OpenMPDeviceInput = nullptr;
4924	for (const InputInfo &I : Inputs) {
4925	if (&I == &Input || I.getType() == types::TY_Nothing) {
4926	// This is the primary input or contains nothing.
4927	} else if (IsExtractAPI) {
4928	auto ExpectedInputType = ExtractAPIPlaceholderInput.getType();
4929	if (I.getType() != ExpectedInputType) {
4930	D.Diag(DiagID: diag::err_drv_extract_api_wrong_kind)
4931	<< I.getFilename() << types::getTypeName(Id: I.getType())
4932	<< types::getTypeName(Id: ExpectedInputType);
4933	}
4934	ExtractAPIInputs.push_back(Elt: I);
4935	} else if (IsHostOffloadingAction) {
4936	HostOffloadingInputs.push_back(Elt: I);
4937	} else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
4938	CudaDeviceInput = &I;
4939	} else if (IsOpenMPDevice && !OpenMPDeviceInput) {
4940	OpenMPDeviceInput = &I;
4941	} else {
4942	llvm_unreachable("unexpectedly given multiple inputs");
4943	}
4944	}
4945
4946	const llvm::Triple *AuxTriple =
4947	(IsCuda || IsHIP) ? TC.getAuxTriple() : nullptr;
4948	bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
4949	bool IsUEFI = RawTriple.isUEFI();
4950	bool IsIAMCU = RawTriple.isOSIAMCU();
4951
4952	// Adjust IsWindowsXYZ for CUDA/HIP/SYCL compilations. Even when compiling in
4953	// device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
4954	// Windows), we need to pass Windows-specific flags to cc1.
4955	if (IsCuda || IsHIP || IsSYCL)
4956	IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
4957
4958	// C++ is not supported for IAMCU.
4959	if (IsIAMCU && types::isCXX(Id: Input.getType()))
4960	D.Diag(DiagID: diag::err_drv_clang_unsupported) << "C++ for IAMCU";
4961
4962	// Invoke ourselves in -cc1 mode.
4963	//
4964	// FIXME: Implement custom jobs for internal actions.
4965	CmdArgs.push_back(Elt: "-cc1");
4966
4967	// Add the "effective" target triple.
4968	CmdArgs.push_back(Elt: "-triple");
4969	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TripleStr));
4970
4971	if (const Arg *MJ = Args.getLastArg(Ids: options::OPT_MJ)) {
4972	DumpCompilationDatabase(C, Filename: MJ->getValue(), Target: TripleStr, Output, Input, Args);
4973	Args.ClaimAllArgs(Id0: options::OPT_MJ);
4974	} else if (const Arg *GenCDBFragment =
4975	Args.getLastArg(Ids: options::OPT_gen_cdb_fragment_path)) {
4976	DumpCompilationDatabaseFragmentToDir(Dir: GenCDBFragment->getValue(), C,
4977	Target: TripleStr, Output, Input, Args);
4978	Args.ClaimAllArgs(Id0: options::OPT_gen_cdb_fragment_path);
4979	}
4980
4981	if (IsCuda || IsHIP) {
4982	// We have to pass the triple of the host if compiling for a CUDA/HIP device
4983	// and vice-versa.
4984	std::string NormalizedTriple;
4985	if (JA.isDeviceOffloading(OKind: Action::OFK_Cuda) ||
4986	JA.isDeviceOffloading(OKind: Action::OFK_HIP))
4987	NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
4988	->getTriple()
4989	.normalize();
4990	else {
4991	// Host-side compilation.
4992	NormalizedTriple =
4993	(IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
4994	: C.getSingleOffloadToolChain<Action::OFK_HIP>())
4995	->getTriple()
4996	.normalize();
4997	if (IsCuda) {
4998	// We need to figure out which CUDA version we're compiling for, as that
4999	// determines how we load and launch GPU kernels.
5000	auto *CTC = static_cast<const toolchains::CudaToolChain *>(
5001	C.getSingleOffloadToolChain<Action::OFK_Cuda>());
5002	assert(CTC && "Expected valid CUDA Toolchain.");
5003	if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
5004	CmdArgs.push_back(Elt: Args.MakeArgString(
5005	Str: Twine("-target-sdk-version=") +
5006	CudaVersionToString(V: CTC->CudaInstallation.version())));
5007	// Unsized function arguments used for variadics were introduced in
5008	// CUDA-9.0. We still do not support generating code that actually uses
5009	// variadic arguments yet, but we do need to allow parsing them as
5010	// recent CUDA headers rely on that.
5011	// https://github.com/llvm/llvm-project/issues/58410
5012	if (CTC->CudaInstallation.version() >= CudaVersion::CUDA_90)
5013	CmdArgs.push_back(Elt: "-fcuda-allow-variadic-functions");
5014	}
5015	}
5016	CmdArgs.push_back(Elt: "-aux-triple");
5017	CmdArgs.push_back(Elt: Args.MakeArgString(Str: NormalizedTriple));
5018
5019	if (JA.isDeviceOffloading(OKind: Action::OFK_HIP) &&
5020	(getToolChain().getTriple().isAMDGPU() ||
5021	(getToolChain().getTriple().isSPIRV() &&
5022	getToolChain().getTriple().getVendor() == llvm::Triple::AMD))) {
5023	// Device side compilation printf
5024	if (Args.getLastArg(Ids: options::OPT_mprintf_kind_EQ)) {
5025	CmdArgs.push_back(Elt: Args.MakeArgString(
5026	Str: "-mprintf-kind=" +
5027	Args.getLastArgValue(Id: options::OPT_mprintf_kind_EQ)));
5028	// Force compiler error on invalid conversion specifiers
5029	CmdArgs.push_back(
5030	Elt: Args.MakeArgString(Str: "-Werror=format-invalid-specifier"));
5031	}
5032	}
5033	}
5034
5035	// Optimization level for CodeGen.
5036	if (const Arg *A = Args.getLastArg(Ids: options::OPT_O_Group)) {
5037	if (A->getOption().matches(ID: options::OPT_O4)) {
5038	CmdArgs.push_back(Elt: "-O3");
5039	D.Diag(DiagID: diag::warn_O4_is_O3);
5040	} else {
5041	A->render(Args, Output&: CmdArgs);
5042	}
5043	}
5044
5045	// Unconditionally claim the printf option now to avoid unused diagnostic.
5046	if (const Arg *PF = Args.getLastArg(Ids: options::OPT_mprintf_kind_EQ))
5047	PF->claim();
5048
5049	if (IsSYCL) {
5050	if (IsSYCLDevice) {
5051	// Host triple is needed when doing SYCL device compilations.
5052	llvm::Triple AuxT = C.getDefaultToolChain().getTriple();
5053	std::string NormalizedTriple = AuxT.normalize();
5054	CmdArgs.push_back(Elt: "-aux-triple");
5055	CmdArgs.push_back(Elt: Args.MakeArgString(Str: NormalizedTriple));
5056
5057	// We want to compile sycl kernels.
5058	CmdArgs.push_back(Elt: "-fsycl-is-device");
5059
5060	// Set O2 optimization level by default
5061	if (!Args.getLastArg(Ids: options::OPT_O_Group))
5062	CmdArgs.push_back(Elt: "-O2");
5063	} else {
5064	// Add any options that are needed specific to SYCL offload while
5065	// performing the host side compilation.
5066
5067	// Let the front-end host compilation flow know about SYCL offload
5068	// compilation.
5069	CmdArgs.push_back(Elt: "-fsycl-is-host");
5070	}
5071
5072	// Set options for both host and device.
5073	Arg *SYCLStdArg = Args.getLastArg(Ids: options::OPT_sycl_std_EQ);
5074	if (SYCLStdArg) {
5075	SYCLStdArg->render(Args, Output&: CmdArgs);
5076	} else {
5077	// Ensure the default version in SYCL mode is 2020.
5078	CmdArgs.push_back(Elt: "-sycl-std=2020");
5079	}
5080	}
5081
5082	if (Args.hasArg(Ids: options::OPT_fclangir))
5083	CmdArgs.push_back(Elt: "-fclangir");
5084
5085	if (IsOpenMPDevice) {
5086	// We have to pass the triple of the host if compiling for an OpenMP device.
5087	std::string NormalizedTriple =
5088	C.getSingleOffloadToolChain<Action::OFK_Host>()
5089	->getTriple()
5090	.normalize();
5091	CmdArgs.push_back(Elt: "-aux-triple");
5092	CmdArgs.push_back(Elt: Args.MakeArgString(Str: NormalizedTriple));
5093	}
5094
5095	if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
5096	Triple.getArch() == llvm::Triple::thumb)) {
5097	unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
5098	unsigned Version = 0;
5099	bool Failure =
5100	Triple.getArchName().substr(Start: Offset).consumeInteger(Radix: 10, Result&: Version);
5101	if (Failure || Version < 7)
5102	D.Diag(DiagID: diag::err_target_unsupported_arch) << Triple.getArchName()
5103	<< TripleStr;
5104	}
5105
5106	// Push all default warning arguments that are specific to
5107	// the given target. These come before user provided warning options
5108	// are provided.
5109	TC.addClangWarningOptions(CC1Args&: CmdArgs);
5110
5111	// FIXME: Subclass ToolChain for SPIR and move this to addClangWarningOptions.
5112	if (Triple.isSPIR() || Triple.isSPIRV())
5113	CmdArgs.push_back(Elt: "-Wspir-compat");
5114
5115	// Select the appropriate action.
5116	RewriteKind rewriteKind = RK_None;
5117
5118	bool UnifiedLTO = false;
5119	if (IsUsingLTO) {
5120	UnifiedLTO = Args.hasFlag(Pos: options::OPT_funified_lto,
5121	Neg: options::OPT_fno_unified_lto, Default: Triple.isPS());
5122	if (UnifiedLTO)
5123	CmdArgs.push_back(Elt: "-funified-lto");
5124	}
5125
5126	// If CollectArgsForIntegratedAssembler() isn't called below, claim the args
5127	// it claims when not running an assembler. Otherwise, clang would emit
5128	// "argument unused" warnings for assembler flags when e.g. adding "-E" to
5129	// flags while debugging something. That'd be somewhat inconvenient, and it's
5130	// also inconsistent with most other flags -- we don't warn on
5131	// -ffunction-sections not being used in -E mode either for example, even
5132	// though it's not really used either.
5133	if (!isa<AssembleJobAction>(Val: JA)) {
5134	// The args claimed here should match the args used in
5135	// CollectArgsForIntegratedAssembler().
5136	if (TC.useIntegratedAs()) {
5137	Args.ClaimAllArgs(Id0: options::OPT_mrelax_all);
5138	Args.ClaimAllArgs(Id0: options::OPT_mno_relax_all);
5139	Args.ClaimAllArgs(Id0: options::OPT_mincremental_linker_compatible);
5140	Args.ClaimAllArgs(Id0: options::OPT_mno_incremental_linker_compatible);
5141	switch (C.getDefaultToolChain().getArch()) {
5142	case llvm::Triple::arm:
5143	case llvm::Triple::armeb:
5144	case llvm::Triple::thumb:
5145	case llvm::Triple::thumbeb:
5146	Args.ClaimAllArgs(Id0: options::OPT_mimplicit_it_EQ);
5147	break;
5148	default:
5149	break;
5150	}
5151	}
5152	Args.ClaimAllArgs(Id0: options::OPT_Wa_COMMA);
5153	Args.ClaimAllArgs(Id0: options::OPT_Xassembler);
5154	Args.ClaimAllArgs(Id0: options::OPT_femit_dwarf_unwind_EQ);
5155	}
5156
5157	if (isa<AnalyzeJobAction>(Val: JA)) {
5158	assert(JA.getType() == types::TY_Plist && "Invalid output type.");
5159	CmdArgs.push_back(Elt: "-analyze");
5160	} else if (isa<PreprocessJobAction>(Val: JA)) {
5161	if (Output.getType() == types::TY_Dependencies)
5162	CmdArgs.push_back(Elt: "-Eonly");
5163	else {
5164	CmdArgs.push_back(Elt: "-E");
5165	if (Args.hasArg(Ids: options::OPT_rewrite_objc) &&
5166	!Args.hasArg(Ids: options::OPT_g_Group))
5167	CmdArgs.push_back(Elt: "-P");
5168	else if (JA.getType() == types::TY_PP_CXXHeaderUnit)
5169	CmdArgs.push_back(Elt: "-fdirectives-only");
5170	}
5171	} else if (isa<AssembleJobAction>(Val: JA)) {
5172	CmdArgs.push_back(Elt: "-emit-obj");
5173
5174	CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
5175
5176	// Also ignore explicit -force_cpusubtype_ALL option.
5177	(void)Args.hasArg(Ids: options::OPT_force__cpusubtype__ALL);
5178	} else if (isa<PrecompileJobAction>(Val: JA)) {
5179	if (JA.getType() == types::TY_Nothing)
5180	CmdArgs.push_back(Elt: "-fsyntax-only");
5181	else if (JA.getType() == types::TY_ModuleFile)
5182	CmdArgs.push_back(Elt: "-emit-module-interface");
5183	else if (JA.getType() == types::TY_HeaderUnit)
5184	CmdArgs.push_back(Elt: "-emit-header-unit");
5185	else if (!Args.hasArg(Ids: options::OPT_ignore_pch))
5186	CmdArgs.push_back(Elt: "-emit-pch");
5187	} else if (isa<VerifyPCHJobAction>(Val: JA)) {
5188	CmdArgs.push_back(Elt: "-verify-pch");
5189	} else if (isa<ExtractAPIJobAction>(Val: JA)) {
5190	assert(JA.getType() == types::TY_API_INFO &&
5191	"Extract API actions must generate a API information.");
5192	CmdArgs.push_back(Elt: "-extract-api");
5193
5194	if (Arg *PrettySGFArg = Args.getLastArg(Ids: options::OPT_emit_pretty_sgf))
5195	PrettySGFArg->render(Args, Output&: CmdArgs);
5196
5197	Arg *SymbolGraphDirArg = Args.getLastArg(Ids: options::OPT_symbol_graph_dir_EQ);
5198
5199	if (Arg *ProductNameArg = Args.getLastArg(Ids: options::OPT_product_name_EQ))
5200	ProductNameArg->render(Args, Output&: CmdArgs);
5201	if (Arg *ExtractAPIIgnoresFileArg =
5202	Args.getLastArg(Ids: options::OPT_extract_api_ignores_EQ))
5203	ExtractAPIIgnoresFileArg->render(Args, Output&: CmdArgs);
5204	if (Arg *EmitExtensionSymbolGraphs =
5205	Args.getLastArg(Ids: options::OPT_emit_extension_symbol_graphs)) {
5206	if (!SymbolGraphDirArg)
5207	D.Diag(DiagID: diag::err_drv_missing_symbol_graph_dir);
5208
5209	EmitExtensionSymbolGraphs->render(Args, Output&: CmdArgs);
5210	}
5211	if (SymbolGraphDirArg)
5212	SymbolGraphDirArg->render(Args, Output&: CmdArgs);
5213	} else {
5214	assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
5215	"Invalid action for clang tool.");
5216	if (JA.getType() == types::TY_Nothing) {
5217	CmdArgs.push_back(Elt: "-fsyntax-only");
5218	} else if (JA.getType() == types::TY_LLVM_IR ||
5219	JA.getType() == types::TY_LTO_IR) {
5220	CmdArgs.push_back(Elt: "-emit-llvm");
5221	} else if (JA.getType() == types::TY_LLVM_BC ||
5222	JA.getType() == types::TY_LTO_BC) {
5223	// Emit textual llvm IR for AMDGPU offloading for -emit-llvm -S
5224	if (Triple.isAMDGCN() && IsOpenMPDevice && Args.hasArg(Ids: options::OPT_S) &&
5225	Args.hasArg(Ids: options::OPT_emit_llvm)) {
5226	CmdArgs.push_back(Elt: "-emit-llvm");
5227	} else {
5228	CmdArgs.push_back(Elt: "-emit-llvm-bc");
5229	}
5230	} else if (JA.getType() == types::TY_IFS ||
5231	JA.getType() == types::TY_IFS_CPP) {
5232	StringRef ArgStr =
5233	Args.hasArg(Ids: options::OPT_interface_stub_version_EQ)
5234	? Args.getLastArgValue(Id: options::OPT_interface_stub_version_EQ)
5235	: "ifs-v1";
5236	CmdArgs.push_back(Elt: "-emit-interface-stubs");
5237	CmdArgs.push_back(
5238	Elt: Args.MakeArgString(Str: Twine("-interface-stub-version=") + ArgStr.str()));
5239	} else if (JA.getType() == types::TY_PP_Asm) {
5240	CmdArgs.push_back(Elt: "-S");
5241	} else if (JA.getType() == types::TY_AST) {
5242	if (!Args.hasArg(Ids: options::OPT_ignore_pch))
5243	CmdArgs.push_back(Elt: "-emit-pch");
5244	} else if (JA.getType() == types::TY_ModuleFile) {
5245	CmdArgs.push_back(Elt: "-module-file-info");
5246	} else if (JA.getType() == types::TY_RewrittenObjC) {
5247	CmdArgs.push_back(Elt: "-rewrite-objc");
5248	rewriteKind = RK_NonFragile;
5249	} else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
5250	CmdArgs.push_back(Elt: "-rewrite-objc");
5251	rewriteKind = RK_Fragile;
5252	} else if (JA.getType() == types::TY_CIR) {
5253	CmdArgs.push_back(Elt: "-emit-cir");
5254	} else {
5255	assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
5256	}
5257
5258	// Preserve use-list order by default when emitting bitcode, so that
5259	// loading the bitcode up in 'opt' or 'llc' and running passes gives the
5260	// same result as running passes here. For LTO, we don't need to preserve
5261	// the use-list order, since serialization to bitcode is part of the flow.
5262	if (JA.getType() == types::TY_LLVM_BC)
5263	CmdArgs.push_back(Elt: "-emit-llvm-uselists");
5264
5265	if (IsUsingLTO) {
5266	if (IsDeviceOffloadAction && !JA.isDeviceOffloading(OKind: Action::OFK_OpenMP) &&
5267	!Args.hasFlag(Pos: options::OPT_offload_new_driver,
5268	Neg: options::OPT_no_offload_new_driver,
5269	Default: C.isOffloadingHostKind(Kind: Action::OFK_Cuda)) &&
5270	!Triple.isAMDGPU()) {
5271	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5272	<< Args.getLastArg(Ids: options::OPT_foffload_lto,
5273	Ids: options::OPT_foffload_lto_EQ)
5274	->getAsString(Args)
5275	<< Triple.getTriple();
5276	} else if (Triple.isNVPTX() && !IsRDCMode &&
5277	JA.isDeviceOffloading(OKind: Action::OFK_Cuda)) {
5278	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_language_mode)
5279	<< Args.getLastArg(Ids: options::OPT_foffload_lto,
5280	Ids: options::OPT_foffload_lto_EQ)
5281	->getAsString(Args)
5282	<< "-fno-gpu-rdc";
5283	} else {
5284	assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);
5285	CmdArgs.push_back(Elt: Args.MakeArgString(
5286	Str: Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));
5287	// PS4 uses the legacy LTO API, which does not support some of the
5288	// features enabled by -flto-unit.
5289	if (!RawTriple.isPS4() ||
5290	(D.getLTOMode() == LTOK_Full) || !UnifiedLTO)
5291	CmdArgs.push_back(Elt: "-flto-unit");
5292	}
5293	}
5294	}
5295
5296	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_dumpdir);
5297
5298	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fthinlto_index_EQ)) {
5299	if (!types::isLLVMIR(Id: Input.getType()))
5300	D.Diag(DiagID: diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
5301	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fthinlto_index_EQ);
5302	}
5303
5304	if (Triple.isPPC())
5305	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_mregnames,
5306	Neg: options::OPT_mno_regnames);
5307
5308	if (Args.getLastArg(Ids: options::OPT_fthin_link_bitcode_EQ))
5309	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fthin_link_bitcode_EQ);
5310
5311	if (Args.getLastArg(Ids: options::OPT_save_temps_EQ))
5312	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_save_temps_EQ);
5313
5314	auto *MemProfArg = Args.getLastArg(Ids: options::OPT_fmemory_profile,
5315	Ids: options::OPT_fmemory_profile_EQ,
5316	Ids: options::OPT_fno_memory_profile);
5317	if (MemProfArg &&
5318	!MemProfArg->getOption().matches(ID: options::OPT_fno_memory_profile))
5319	MemProfArg->render(Args, Output&: CmdArgs);
5320
5321	if (auto *MemProfUseArg =
5322	Args.getLastArg(Ids: options::OPT_fmemory_profile_use_EQ)) {
5323	if (MemProfArg)
5324	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
5325	<< MemProfUseArg->getAsString(Args) << MemProfArg->getAsString(Args);
5326	if (auto *PGOInstrArg = Args.getLastArg(Ids: options::OPT_fprofile_generate,
5327	Ids: options::OPT_fprofile_generate_EQ))
5328	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
5329	<< MemProfUseArg->getAsString(Args) << PGOInstrArg->getAsString(Args);
5330	MemProfUseArg->render(Args, Output&: CmdArgs);
5331	}
5332
5333	// Embed-bitcode option.
5334	// Only white-listed flags below are allowed to be embedded.
5335	if (C.getDriver().embedBitcodeInObject() && !IsUsingLTO &&
5336	(isa<BackendJobAction>(Val: JA) || isa<AssembleJobAction>(Val: JA))) {
5337	// Add flags implied by -fembed-bitcode.
5338	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fembed_bitcode_EQ);
5339	// Disable all llvm IR level optimizations.
5340	CmdArgs.push_back(Elt: "-disable-llvm-passes");
5341
5342	// Render target options.
5343	TC.addClangTargetOptions(DriverArgs: Args, CC1Args&: CmdArgs, DeviceOffloadKind: JA.getOffloadingDeviceKind());
5344
5345	// reject options that shouldn't be supported in bitcode
5346	// also reject kernel/kext
5347	static const constexpr unsigned kBitcodeOptionIgnorelist[] = {
5348	options::OPT_mkernel,
5349	options::OPT_fapple_kext,
5350	options::OPT_ffunction_sections,
5351	options::OPT_fno_function_sections,
5352	options::OPT_fdata_sections,
5353	options::OPT_fno_data_sections,
5354	options::OPT_fbasic_block_sections_EQ,
5355	options::OPT_funique_internal_linkage_names,
5356	options::OPT_fno_unique_internal_linkage_names,
5357	options::OPT_funique_section_names,
5358	options::OPT_fno_unique_section_names,
5359	options::OPT_funique_basic_block_section_names,
5360	options::OPT_fno_unique_basic_block_section_names,
5361	options::OPT_mrestrict_it,
5362	options::OPT_mno_restrict_it,
5363	options::OPT_mstackrealign,
5364	options::OPT_mno_stackrealign,
5365	options::OPT_mstack_alignment,
5366	options::OPT_mcmodel_EQ,
5367	options::OPT_mlong_calls,
5368	options::OPT_mno_long_calls,
5369	options::OPT_ggnu_pubnames,
5370	options::OPT_gdwarf_aranges,
5371	options::OPT_fdebug_types_section,
5372	options::OPT_fno_debug_types_section,
5373	options::OPT_fdwarf_directory_asm,
5374	options::OPT_fno_dwarf_directory_asm,
5375	options::OPT_mrelax_all,
5376	options::OPT_mno_relax_all,
5377	options::OPT_ftrap_function_EQ,
5378	options::OPT_ffixed_r9,
5379	options::OPT_mfix_cortex_a53_835769,
5380	options::OPT_mno_fix_cortex_a53_835769,
5381	options::OPT_ffixed_x18,
5382	options::OPT_mglobal_merge,
5383	options::OPT_mno_global_merge,
5384	options::OPT_mred_zone,
5385	options::OPT_mno_red_zone,
5386	options::OPT_Wa_COMMA,
5387	options::OPT_Xassembler,
5388	options::OPT_mllvm,
5389	options::OPT_mmlir,
5390	};
5391	for (const auto &A : Args)
5392	if (llvm::is_contained(Range: kBitcodeOptionIgnorelist, Element: A->getOption().getID()))
5393	D.Diag(DiagID: diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
5394
5395	// Render the CodeGen options that need to be passed.
5396	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_foptimize_sibling_calls,
5397	Neg: options::OPT_fno_optimize_sibling_calls);
5398
5399	RenderFloatingPointOptions(TC, D, OFastEnabled: isOptimizationLevelFast(Args), Args,
5400	CmdArgs, JA);
5401
5402	// Render ABI arguments
5403	switch (TC.getArch()) {
5404	default: break;
5405	case llvm::Triple::arm:
5406	case llvm::Triple::armeb:
5407	case llvm::Triple::thumbeb:
5408	RenderARMABI(D, Triple, Args, CmdArgs);
5409	break;
5410	case llvm::Triple::aarch64:
5411	case llvm::Triple::aarch64_32:
5412	case llvm::Triple::aarch64_be:
5413	RenderAArch64ABI(Triple, Args, CmdArgs);
5414	break;
5415	}
5416
5417	// Input/Output file.
5418	if (Output.getType() == types::TY_Dependencies) {
5419	// Handled with other dependency code.
5420	} else if (Output.isFilename()) {
5421	CmdArgs.push_back(Elt: "-o");
5422	CmdArgs.push_back(Elt: Output.getFilename());
5423	} else {
5424	assert(Output.isNothing() && "Input output.");
5425	}
5426
5427	for (const auto &II : Inputs) {
5428	addDashXForInput(Args, Input: II, CmdArgs);
5429	if (II.isFilename())
5430	CmdArgs.push_back(Elt: II.getFilename());
5431	else
5432	II.getInputArg().renderAsInput(Args, Output&: CmdArgs);
5433	}
5434
5435	C.addCommand(C: std::make_unique<Command>(
5436	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args: D.getClangProgramPath(),
5437	args&: CmdArgs, args: Inputs, args: Output, args: D.getPrependArg()));
5438	return;
5439	}
5440
5441	if (C.getDriver().embedBitcodeMarkerOnly() && !IsUsingLTO)
5442	CmdArgs.push_back(Elt: "-fembed-bitcode=marker");
5443
5444	// We normally speed up the clang process a bit by skipping destructors at
5445	// exit, but when we're generating diagnostics we can rely on some of the
5446	// cleanup.
5447	if (!C.isForDiagnostics())
5448	CmdArgs.push_back(Elt: "-disable-free");
5449	CmdArgs.push_back(Elt: "-clear-ast-before-backend");
5450
5451	#ifdef NDEBUG
5452	const bool IsAssertBuild = false;
5453	#else
5454	const bool IsAssertBuild = true;
5455	#endif
5456
5457	// Disable the verification pass in asserts builds unless otherwise specified.
5458	if (Args.hasFlag(Pos: options::OPT_fno_verify_intermediate_code,
5459	Neg: options::OPT_fverify_intermediate_code, Default: !IsAssertBuild)) {
5460	CmdArgs.push_back(Elt: "-disable-llvm-verifier");
5461	}
5462
5463	// Discard value names in assert builds unless otherwise specified.
5464	if (Args.hasFlag(Pos: options::OPT_fdiscard_value_names,
5465	Neg: options::OPT_fno_discard_value_names, Default: !IsAssertBuild)) {
5466	if (Args.hasArg(Ids: options::OPT_fdiscard_value_names) &&
5467	llvm::any_of(Range: Inputs, P: [](const clang::driver::InputInfo &II) {
5468	return types::isLLVMIR(Id: II.getType());
5469	})) {
5470	D.Diag(DiagID: diag::warn_ignoring_fdiscard_for_bitcode);
5471	}
5472	CmdArgs.push_back(Elt: "-discard-value-names");
5473	}
5474
5475	// Set the main file name, so that debug info works even with
5476	// -save-temps.
5477	CmdArgs.push_back(Elt: "-main-file-name");
5478	CmdArgs.push_back(Elt: getBaseInputName(Args, Input));
5479
5480	// Some flags which affect the language (via preprocessor
5481	// defines).
5482	if (Args.hasArg(Ids: options::OPT_static))
5483	CmdArgs.push_back(Elt: "-static-define");
5484
5485	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_static_libclosure);
5486
5487	if (Args.hasArg(Ids: options::OPT_municode))
5488	CmdArgs.push_back(Elt: "-DUNICODE");
5489
5490	if (isa<AnalyzeJobAction>(Val: JA))
5491	RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
5492
5493	if (isa<AnalyzeJobAction>(Val: JA) ||
5494	(isa<PreprocessJobAction>(Val: JA) && Args.hasArg(Ids: options::OPT__analyze)))
5495	CmdArgs.push_back(Elt: "-setup-static-analyzer");
5496
5497	// Enable compatilibily mode to avoid analyzer-config related errors.
5498	// Since we can't access frontend flags through hasArg, let's manually iterate
5499	// through them.
5500	bool FoundAnalyzerConfig = false;
5501	for (auto *Arg : Args.filtered(Ids: options::OPT_Xclang))
5502	if (StringRef(Arg->getValue()) == "-analyzer-config") {
5503	FoundAnalyzerConfig = true;
5504	break;
5505	}
5506	if (!FoundAnalyzerConfig)
5507	for (auto *Arg : Args.filtered(Ids: options::OPT_Xanalyzer))
5508	if (StringRef(Arg->getValue()) == "-analyzer-config") {
5509	FoundAnalyzerConfig = true;
5510	break;
5511	}
5512	if (FoundAnalyzerConfig)
5513	CmdArgs.push_back(Elt: "-analyzer-config-compatibility-mode=true");
5514
5515	CheckCodeGenerationOptions(D, Args);
5516
5517	unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
5518	assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
5519	if (FunctionAlignment) {
5520	CmdArgs.push_back(Elt: "-function-alignment");
5521	CmdArgs.push_back(Elt: Args.MakeArgString(Str: std::to_string(val: FunctionAlignment)));
5522	}
5523
5524	// We support -falign-loops=N where N is a power of 2. GCC supports more
5525	// forms.
5526	if (const Arg *A = Args.getLastArg(Ids: options::OPT_falign_loops_EQ)) {
5527	unsigned Value = 0;
5528	if (StringRef(A->getValue()).getAsInteger(Radix: 10, Result&: Value) || Value > 65536)
5529	TC.getDriver().Diag(DiagID: diag::err_drv_invalid_int_value)
5530	<< A->getAsString(Args) << A->getValue();
5531	else if (Value & (Value - 1))
5532	TC.getDriver().Diag(DiagID: diag::err_drv_alignment_not_power_of_two)
5533	<< A->getAsString(Args) << A->getValue();
5534	// Treat =0 as unspecified (use the target preference).
5535	if (Value)
5536	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-falign-loops=" +
5537	Twine(std::min(a: Value, b: 65536u))));
5538	}
5539
5540	if (Triple.isOSzOS()) {
5541	// On z/OS some of the system header feature macros need to
5542	// be defined to enable most cross platform projects to build
5543	// successfully. Ths include the libc++ library. A
5544	// complicating factor is that users can define these
5545	// macros to the same or different values. We need to add
5546	// the definition for these macros to the compilation command
5547	// if the user hasn't already defined them.
5548
5549	auto findMacroDefinition = [&](const std::string &Macro) {
5550	auto MacroDefs = Args.getAllArgValues(Id: options::OPT_D);
5551	return llvm::any_of(Range&: MacroDefs, P: [&](const std::string &M) {
5552	return M == Macro || M.find(str: Macro + '=') != std::string::npos;
5553	});
5554	};
5555
5556	// _UNIX03_WITHDRAWN is required for libcxx & porting.
5557	if (!findMacroDefinition("_UNIX03_WITHDRAWN"))
5558	CmdArgs.push_back(Elt: "-D_UNIX03_WITHDRAWN");
5559	// _OPEN_DEFAULT is required for XL compat
5560	if (!findMacroDefinition("_OPEN_DEFAULT"))
5561	CmdArgs.push_back(Elt: "-D_OPEN_DEFAULT");
5562	if (D.CCCIsCXX() || types::isCXX(Id: Input.getType())) {
5563	// _XOPEN_SOURCE=600 is required for libcxx.
5564	if (!findMacroDefinition("_XOPEN_SOURCE"))
5565	CmdArgs.push_back(Elt: "-D_XOPEN_SOURCE=600");
5566	}
5567	}
5568
5569	llvm::Reloc::Model RelocationModel;
5570	unsigned PICLevel;
5571	bool IsPIE;
5572	std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) = ParsePICArgs(ToolChain: TC, Args);
5573	Arg *LastPICDataRelArg =
5574	Args.getLastArg(Ids: options::OPT_mno_pic_data_is_text_relative,
5575	Ids: options::OPT_mpic_data_is_text_relative);
5576	bool NoPICDataIsTextRelative = false;
5577	if (LastPICDataRelArg) {
5578	if (LastPICDataRelArg->getOption().matches(
5579	ID: options::OPT_mno_pic_data_is_text_relative)) {
5580	NoPICDataIsTextRelative = true;
5581	if (!PICLevel)
5582	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
5583	<< "-mno-pic-data-is-text-relative"
5584	<< "-fpic/-fpie";
5585	}
5586	if (!Triple.isSystemZ())
5587	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5588	<< (NoPICDataIsTextRelative ? "-mno-pic-data-is-text-relative"
5589	: "-mpic-data-is-text-relative")
5590	<< RawTriple.str();
5591	}
5592
5593	bool IsROPI = RelocationModel == llvm::Reloc::ROPI ||
5594	RelocationModel == llvm::Reloc::ROPI_RWPI;
5595	bool IsRWPI = RelocationModel == llvm::Reloc::RWPI ||
5596	RelocationModel == llvm::Reloc::ROPI_RWPI;
5597
5598	if (Args.hasArg(Ids: options::OPT_mcmse) &&
5599	!Args.hasArg(Ids: options::OPT_fallow_unsupported)) {
5600	if (IsROPI)
5601	D.Diag(DiagID: diag::err_cmse_pi_are_incompatible) << IsROPI;
5602	if (IsRWPI)
5603	D.Diag(DiagID: diag::err_cmse_pi_are_incompatible) << !IsRWPI;
5604	}
5605
5606	if (IsROPI && types::isCXX(Id: Input.getType()) &&
5607	!Args.hasArg(Ids: options::OPT_fallow_unsupported))
5608	D.Diag(DiagID: diag::err_drv_ropi_incompatible_with_cxx);
5609
5610	const char *RMName = RelocationModelName(Model: RelocationModel);
5611	if (RMName) {
5612	CmdArgs.push_back(Elt: "-mrelocation-model");
5613	CmdArgs.push_back(Elt: RMName);
5614	}
5615	if (PICLevel > 0) {
5616	CmdArgs.push_back(Elt: "-pic-level");
5617	CmdArgs.push_back(Elt: PICLevel == 1 ? "1" : "2");
5618	if (IsPIE)
5619	CmdArgs.push_back(Elt: "-pic-is-pie");
5620	if (NoPICDataIsTextRelative)
5621	CmdArgs.push_back(Elt: "-mcmodel=medium");
5622	}
5623
5624	if (RelocationModel == llvm::Reloc::ROPI ||
5625	RelocationModel == llvm::Reloc::ROPI_RWPI)
5626	CmdArgs.push_back(Elt: "-fropi");
5627	if (RelocationModel == llvm::Reloc::RWPI ||
5628	RelocationModel == llvm::Reloc::ROPI_RWPI)
5629	CmdArgs.push_back(Elt: "-frwpi");
5630
5631	if (Arg *A = Args.getLastArg(Ids: options::OPT_meabi)) {
5632	CmdArgs.push_back(Elt: "-meabi");
5633	CmdArgs.push_back(Elt: A->getValue());
5634	}
5635
5636	// -fsemantic-interposition is forwarded to CC1: set the
5637	// "SemanticInterposition" metadata to 1 (make some linkages interposable) and
5638	// make default visibility external linkage definitions dso_preemptable.
5639	//
5640	// -fno-semantic-interposition: if the target supports .Lfoo$local local
5641	// aliases (make default visibility external linkage definitions dso_local).
5642	// This is the CC1 default for ELF to match COFF/Mach-O.
5643	//
5644	// Otherwise use Clang's traditional behavior: like
5645	// -fno-semantic-interposition but local aliases are not used. So references
5646	// can be interposed if not optimized out.
5647	if (Triple.isOSBinFormatELF()) {
5648	Arg *A = Args.getLastArg(Ids: options::OPT_fsemantic_interposition,
5649	Ids: options::OPT_fno_semantic_interposition);
5650	if (RelocationModel != llvm::Reloc::Static && !IsPIE) {
5651	// The supported targets need to call AsmPrinter::getSymbolPreferLocal.
5652	bool SupportsLocalAlias =
5653	Triple.isAArch64() || Triple.isRISCV() || Triple.isX86();
5654	if (!A)
5655	CmdArgs.push_back(Elt: "-fhalf-no-semantic-interposition");
5656	else if (A->getOption().matches(ID: options::OPT_fsemantic_interposition))
5657	A->render(Args, Output&: CmdArgs);
5658	else if (!SupportsLocalAlias)
5659	CmdArgs.push_back(Elt: "-fhalf-no-semantic-interposition");
5660	}
5661	}
5662
5663	{
5664	std::string Model;
5665	if (Arg *A = Args.getLastArg(Ids: options::OPT_mthread_model)) {
5666	if (!TC.isThreadModelSupported(Model: A->getValue()))
5667	D.Diag(DiagID: diag::err_drv_invalid_thread_model_for_target)
5668	<< A->getValue() << A->getAsString(Args);
5669	Model = A->getValue();
5670	} else
5671	Model = TC.getThreadModel();
5672	if (Model != "posix") {
5673	CmdArgs.push_back(Elt: "-mthread-model");
5674	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Model));
5675	}
5676	}
5677
5678	if (Arg *A = Args.getLastArg(Ids: options::OPT_fveclib)) {
5679	StringRef Name = A->getValue();
5680	if (Name == "SVML") {
5681	if (Triple.getArch() != llvm::Triple::x86 &&
5682	Triple.getArch() != llvm::Triple::x86_64)
5683	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5684	<< Name << Triple.getArchName();
5685	} else if (Name == "AMDLIBM") {
5686	if (Triple.getArch() != llvm::Triple::x86 &&
5687	Triple.getArch() != llvm::Triple::x86_64)
5688	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5689	<< Name << Triple.getArchName();
5690	} else if (Name == "libmvec") {
5691	if (Triple.getArch() != llvm::Triple::x86 &&
5692	Triple.getArch() != llvm::Triple::x86_64 &&
5693	Triple.getArch() != llvm::Triple::aarch64 &&
5694	Triple.getArch() != llvm::Triple::aarch64_be)
5695	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5696	<< Name << Triple.getArchName();
5697	} else if (Name == "SLEEF" || Name == "ArmPL") {
5698	if (Triple.getArch() != llvm::Triple::aarch64 &&
5699	Triple.getArch() != llvm::Triple::aarch64_be &&
5700	Triple.getArch() != llvm::Triple::riscv64)
5701	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5702	<< Name << Triple.getArchName();
5703	}
5704	A->render(Args, Output&: CmdArgs);
5705	}
5706
5707	if (Args.hasFlag(Pos: options::OPT_fmerge_all_constants,
5708	Neg: options::OPT_fno_merge_all_constants, Default: false))
5709	CmdArgs.push_back(Elt: "-fmerge-all-constants");
5710
5711	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fdelete_null_pointer_checks,
5712	Neg: options::OPT_fno_delete_null_pointer_checks);
5713
5714	// LLVM Code Generator Options.
5715
5716	if (Arg *A = Args.getLastArg(Ids: options::OPT_mabi_EQ_quadword_atomics)) {
5717	if (!Triple.isOSAIX() || Triple.isPPC32())
5718	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5719	<< A->getSpelling() << RawTriple.str();
5720	CmdArgs.push_back(Elt: "-mabi=quadword-atomics");
5721	}
5722
5723	if (Arg *A = Args.getLastArg(Ids: options::OPT_mlong_double_128)) {
5724	// Emit the unsupported option error until the Clang's library integration
5725	// support for 128-bit long double is available for AIX.
5726	if (Triple.isOSAIX())
5727	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5728	<< A->getSpelling() << RawTriple.str();
5729	}
5730
5731	if (Arg *A = Args.getLastArg(Ids: options::OPT_Wframe_larger_than_EQ)) {
5732	StringRef V = A->getValue(), V1 = V;
5733	unsigned Size;
5734	if (V1.consumeInteger(Radix: 10, Result&: Size) || !V1.empty())
5735	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
5736	<< V << A->getOption().getName();
5737	else
5738	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fwarn-stack-size=" + V));
5739	}
5740
5741	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fjump_tables,
5742	Neg: options::OPT_fno_jump_tables);
5743	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fprofile_sample_accurate,
5744	Neg: options::OPT_fno_profile_sample_accurate);
5745	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fpreserve_as_comments,
5746	Neg: options::OPT_fno_preserve_as_comments);
5747
5748	if (Arg *A = Args.getLastArg(Ids: options::OPT_mregparm_EQ)) {
5749	CmdArgs.push_back(Elt: "-mregparm");
5750	CmdArgs.push_back(Elt: A->getValue());
5751	}
5752
5753	if (Arg *A = Args.getLastArg(Ids: options::OPT_maix_struct_return,
5754	Ids: options::OPT_msvr4_struct_return)) {
5755	if (!TC.getTriple().isPPC32()) {
5756	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5757	<< A->getSpelling() << RawTriple.str();
5758	} else if (A->getOption().matches(ID: options::OPT_maix_struct_return)) {
5759	CmdArgs.push_back(Elt: "-maix-struct-return");
5760	} else {
5761	assert(A->getOption().matches(options::OPT_msvr4_struct_return));
5762	CmdArgs.push_back(Elt: "-msvr4-struct-return");
5763	}
5764	}
5765
5766	if (Arg *A = Args.getLastArg(Ids: options::OPT_fpcc_struct_return,
5767	Ids: options::OPT_freg_struct_return)) {
5768	if (TC.getArch() != llvm::Triple::x86) {
5769	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5770	<< A->getSpelling() << RawTriple.str();
5771	} else if (A->getOption().matches(ID: options::OPT_fpcc_struct_return)) {
5772	CmdArgs.push_back(Elt: "-fpcc-struct-return");
5773	} else {
5774	assert(A->getOption().matches(options::OPT_freg_struct_return));
5775	CmdArgs.push_back(Elt: "-freg-struct-return");
5776	}
5777	}
5778
5779	if (Args.hasFlag(Pos: options::OPT_mrtd, Neg: options::OPT_mno_rtd, Default: false)) {
5780	if (Triple.getArch() == llvm::Triple::m68k)
5781	CmdArgs.push_back(Elt: "-fdefault-calling-conv=rtdcall");
5782	else
5783	CmdArgs.push_back(Elt: "-fdefault-calling-conv=stdcall");
5784	}
5785
5786	if (Args.hasArg(Ids: options::OPT_fenable_matrix)) {
5787	// enable-matrix is needed by both the LangOpts and by LLVM.
5788	CmdArgs.push_back(Elt: "-fenable-matrix");
5789	CmdArgs.push_back(Elt: "-mllvm");
5790	CmdArgs.push_back(Elt: "-enable-matrix");
5791	}
5792
5793	CodeGenOptions::FramePointerKind FPKeepKind =
5794	getFramePointerKind(Args, Triple: RawTriple);
5795	const char *FPKeepKindStr = nullptr;
5796	switch (FPKeepKind) {
5797	case CodeGenOptions::FramePointerKind::None:
5798	FPKeepKindStr = "-mframe-pointer=none";
5799	break;
5800	case CodeGenOptions::FramePointerKind::Reserved:
5801	FPKeepKindStr = "-mframe-pointer=reserved";
5802	break;
5803	case CodeGenOptions::FramePointerKind::NonLeaf:
5804	FPKeepKindStr = "-mframe-pointer=non-leaf";
5805	break;
5806	case CodeGenOptions::FramePointerKind::All:
5807	FPKeepKindStr = "-mframe-pointer=all";
5808	break;
5809	}
5810	assert(FPKeepKindStr && "unknown FramePointerKind");
5811	CmdArgs.push_back(Elt: FPKeepKindStr);
5812
5813	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fzero_initialized_in_bss,
5814	Neg: options::OPT_fno_zero_initialized_in_bss);
5815
5816	bool OFastEnabled = isOptimizationLevelFast(Args);
5817	if (OFastEnabled)
5818	D.Diag(DiagID: diag::warn_drv_deprecated_arg_ofast);
5819	// If -Ofast is the optimization level, then -fstrict-aliasing should be
5820	// enabled. This alias option is being used to simplify the hasFlag logic.
5821	OptSpecifier StrictAliasingAliasOption =
5822	OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
5823	// We turn strict aliasing off by default if we're Windows MSVC since MSVC
5824	// doesn't do any TBAA.
5825	if (!Args.hasFlag(Pos: options::OPT_fstrict_aliasing, PosAlias: StrictAliasingAliasOption,
5826	Neg: options::OPT_fno_strict_aliasing,
5827	Default: !IsWindowsMSVC && !IsUEFI))
5828	CmdArgs.push_back(Elt: "-relaxed-aliasing");
5829	if (Args.hasFlag(Pos: options::OPT_fno_pointer_tbaa, Neg: options::OPT_fpointer_tbaa,
5830	Default: false))
5831	CmdArgs.push_back(Elt: "-no-pointer-tbaa");
5832	if (!Args.hasFlag(Pos: options::OPT_fstruct_path_tbaa,
5833	Neg: options::OPT_fno_struct_path_tbaa, Default: true))
5834	CmdArgs.push_back(Elt: "-no-struct-path-tbaa");
5835	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fstrict_enums,
5836	Neg: options::OPT_fno_strict_enums);
5837	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fstrict_return,
5838	Neg: options::OPT_fno_strict_return);
5839	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fallow_editor_placeholders,
5840	Neg: options::OPT_fno_allow_editor_placeholders);
5841	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fstrict_vtable_pointers,
5842	Neg: options::OPT_fno_strict_vtable_pointers);
5843	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fforce_emit_vtables,
5844	Neg: options::OPT_fno_force_emit_vtables);
5845	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_foptimize_sibling_calls,
5846	Neg: options::OPT_fno_optimize_sibling_calls);
5847	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fescaping_block_tail_calls,
5848	Neg: options::OPT_fno_escaping_block_tail_calls);
5849
5850	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ffine_grained_bitfield_accesses,
5851	Ids: options::OPT_fno_fine_grained_bitfield_accesses);
5852
5853	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fexperimental_relative_cxx_abi_vtables,
5854	Ids: options::OPT_fno_experimental_relative_cxx_abi_vtables);
5855
5856	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fexperimental_omit_vtable_rtti,
5857	Ids: options::OPT_fno_experimental_omit_vtable_rtti);
5858
5859	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fdisable_block_signature_string,
5860	Ids: options::OPT_fno_disable_block_signature_string);
5861
5862	// Handle segmented stacks.
5863	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fsplit_stack,
5864	Neg: options::OPT_fno_split_stack);
5865
5866	// -fprotect-parens=0 is default.
5867	if (Args.hasFlag(Pos: options::OPT_fprotect_parens,
5868	Neg: options::OPT_fno_protect_parens, Default: false))
5869	CmdArgs.push_back(Elt: "-fprotect-parens");
5870
5871	RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);
5872
5873	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fatomic_remote_memory,
5874	Neg: options::OPT_fno_atomic_remote_memory);
5875	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fatomic_fine_grained_memory,
5876	Neg: options::OPT_fno_atomic_fine_grained_memory);
5877	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fatomic_ignore_denormal_mode,
5878	Neg: options::OPT_fno_atomic_ignore_denormal_mode);
5879
5880	if (Arg *A = Args.getLastArg(Ids: options::OPT_fextend_args_EQ)) {
5881	const llvm::Triple::ArchType Arch = TC.getArch();
5882	if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
5883	StringRef V = A->getValue();
5884	if (V == "64")
5885	CmdArgs.push_back(Elt: "-fextend-arguments=64");
5886	else if (V != "32")
5887	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
5888	<< A->getValue() << A->getOption().getName();
5889	} else
5890	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5891	<< A->getOption().getName() << TripleStr;
5892	}
5893
5894	if (Arg *A = Args.getLastArg(Ids: options::OPT_mdouble_EQ)) {
5895	if (TC.getArch() == llvm::Triple::avr)
5896	A->render(Args, Output&: CmdArgs);
5897	else
5898	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5899	<< A->getAsString(Args) << TripleStr;
5900	}
5901
5902	if (Arg *A = Args.getLastArg(Ids: options::OPT_LongDouble_Group)) {
5903	if (TC.getTriple().isX86())
5904	A->render(Args, Output&: CmdArgs);
5905	else if (TC.getTriple().isPPC() &&
5906	(A->getOption().getID() != options::OPT_mlong_double_80))
5907	A->render(Args, Output&: CmdArgs);
5908	else
5909	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
5910	<< A->getAsString(Args) << TripleStr;
5911	}
5912
5913	// Decide whether to use verbose asm. Verbose assembly is the default on
5914	// toolchains which have the integrated assembler on by default.
5915	bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
5916	if (!Args.hasFlag(Pos: options::OPT_fverbose_asm, Neg: options::OPT_fno_verbose_asm,
5917	Default: IsIntegratedAssemblerDefault))
5918	CmdArgs.push_back(Elt: "-fno-verbose-asm");
5919
5920	// Parse 'none' or '$major.$minor'. Disallow -fbinutils-version=0 because we
5921	// use that to indicate the MC default in the backend.
5922	if (Arg *A = Args.getLastArg(Ids: options::OPT_fbinutils_version_EQ)) {
5923	StringRef V = A->getValue();
5924	unsigned Num;
5925	if (V == "none")
5926	A->render(Args, Output&: CmdArgs);
5927	else if (!V.consumeInteger(Radix: 10, Result&: Num) && Num > 0 &&
5928	(V.empty() || (V.consume_front(Prefix: ".") &&
5929	!V.consumeInteger(Radix: 10, Result&: Num) && V.empty())))
5930	A->render(Args, Output&: CmdArgs);
5931	else
5932	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
5933	<< A->getValue() << A->getOption().getName();
5934	}
5935
5936	// If toolchain choose to use MCAsmParser for inline asm don't pass the
5937	// option to disable integrated-as explicitly.
5938	if (!TC.useIntegratedAs() && !TC.parseInlineAsmUsingAsmParser())
5939	CmdArgs.push_back(Elt: "-no-integrated-as");
5940
5941	if (Args.hasArg(Ids: options::OPT_fdebug_pass_structure)) {
5942	CmdArgs.push_back(Elt: "-mdebug-pass");
5943	CmdArgs.push_back(Elt: "Structure");
5944	}
5945	if (Args.hasArg(Ids: options::OPT_fdebug_pass_arguments)) {
5946	CmdArgs.push_back(Elt: "-mdebug-pass");
5947	CmdArgs.push_back(Elt: "Arguments");
5948	}
5949
5950	// Enable -mconstructor-aliases except on darwin, where we have to work around
5951	// a linker bug (see https://openradar.appspot.com/7198997), and CUDA device
5952	// code, where aliases aren't supported.
5953	if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
5954	CmdArgs.push_back(Elt: "-mconstructor-aliases");
5955
5956	// Darwin's kernel doesn't support guard variables; just die if we
5957	// try to use them.
5958	if (KernelOrKext && RawTriple.isOSDarwin())
5959	CmdArgs.push_back(Elt: "-fforbid-guard-variables");
5960
5961	if (Args.hasFlag(Pos: options::OPT_mms_bitfields, Neg: options::OPT_mno_ms_bitfields,
5962	Default: Triple.isWindowsGNUEnvironment())) {
5963	CmdArgs.push_back(Elt: "-mms-bitfields");
5964	}
5965
5966	if (Triple.isWindowsGNUEnvironment()) {
5967	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fauto_import,
5968	Neg: options::OPT_fno_auto_import);
5969	}
5970
5971	if (Args.hasFlag(Pos: options::OPT_fms_volatile, Neg: options::OPT_fno_ms_volatile,
5972	Default: Triple.isX86() && IsWindowsMSVC))
5973	CmdArgs.push_back(Elt: "-fms-volatile");
5974
5975	// Non-PIC code defaults to -fdirect-access-external-data while PIC code
5976	// defaults to -fno-direct-access-external-data. Pass the option if different
5977	// from the default.
5978	if (Arg *A = Args.getLastArg(Ids: options::OPT_fdirect_access_external_data,
5979	Ids: options::OPT_fno_direct_access_external_data)) {
5980	if (A->getOption().matches(ID: options::OPT_fdirect_access_external_data) !=
5981	(PICLevel == 0))
5982	A->render(Args, Output&: CmdArgs);
5983	} else if (PICLevel == 0 && Triple.isLoongArch()) {
5984	// Some targets default to -fno-direct-access-external-data even for
5985	// -fno-pic.
5986	CmdArgs.push_back(Elt: "-fno-direct-access-external-data");
5987	}
5988
5989	if (Triple.isOSBinFormatELF() && (Triple.isAArch64() || Triple.isX86()))
5990	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fplt, Neg: options::OPT_fno_plt);
5991
5992	// -fhosted is default.
5993	// TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
5994	// use Freestanding.
5995	bool Freestanding =
5996	Args.hasFlag(Pos: options::OPT_ffreestanding, Neg: options::OPT_fhosted, Default: false) ||
5997	KernelOrKext;
5998	if (Freestanding)
5999	CmdArgs.push_back(Elt: "-ffreestanding");
6000
6001	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fno_knr_functions);
6002
6003	// This is a coarse approximation of what llvm-gcc actually does, both
6004	// -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
6005	// complicated ways.
6006	auto SanitizeArgs = TC.getSanitizerArgs(JobArgs: Args);
6007	Args.AddLastArg(Output&: CmdArgs,
6008	Ids: options::OPT_fallow_runtime_check_skip_hot_cutoff_EQ);
6009	bool IsAsyncUnwindTablesDefault =
6010	TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Asynchronous;
6011	bool IsSyncUnwindTablesDefault =
6012	TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Synchronous;
6013
6014	bool AsyncUnwindTables = Args.hasFlag(
6015	Pos: options::OPT_fasynchronous_unwind_tables,
6016	Neg: options::OPT_fno_asynchronous_unwind_tables,
6017	Default: (IsAsyncUnwindTablesDefault || SanitizeArgs.needsUnwindTables()) &&
6018	!Freestanding);
6019	bool UnwindTables =
6020	Args.hasFlag(Pos: options::OPT_funwind_tables, Neg: options::OPT_fno_unwind_tables,
6021	Default: IsSyncUnwindTablesDefault && !Freestanding);
6022	if (AsyncUnwindTables)
6023	CmdArgs.push_back(Elt: "-funwind-tables=2");
6024	else if (UnwindTables)
6025	CmdArgs.push_back(Elt: "-funwind-tables=1");
6026
6027	// Prepare `-aux-target-cpu` and `-aux-target-feature` unless
6028	// `--gpu-use-aux-triple-only` is specified.
6029	if (!Args.getLastArg(Ids: options::OPT_gpu_use_aux_triple_only) &&
6030	(IsCudaDevice || IsHIPDevice || IsSYCLDevice)) {
6031	const ArgList &HostArgs =
6032	C.getArgsForToolChain(TC: nullptr, BoundArch: StringRef(), DeviceOffloadKind: Action::OFK_None);
6033	std::string HostCPU =
6034	getCPUName(D, Args: HostArgs, T: *TC.getAuxTriple(), /*FromAs*/ false);
6035	if (!HostCPU.empty()) {
6036	CmdArgs.push_back(Elt: "-aux-target-cpu");
6037	CmdArgs.push_back(Elt: Args.MakeArgString(Str: HostCPU));
6038	}
6039	getTargetFeatures(D, Triple: *TC.getAuxTriple(), Args: HostArgs, CmdArgs,
6040	/*ForAS*/ false, /*IsAux*/ true);
6041	}
6042
6043	TC.addClangTargetOptions(DriverArgs: Args, CC1Args&: CmdArgs, DeviceOffloadKind: JA.getOffloadingDeviceKind());
6044
6045	addMCModel(D, Args, Triple, RelocationModel, CmdArgs);
6046
6047	if (Arg *A = Args.getLastArg(Ids: options::OPT_mtls_size_EQ)) {
6048	StringRef Value = A->getValue();
6049	unsigned TLSSize = 0;
6050	Value.getAsInteger(Radix: 10, Result&: TLSSize);
6051	if (!Triple.isAArch64() || !Triple.isOSBinFormatELF())
6052	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6053	<< A->getOption().getName() << TripleStr;
6054	if (TLSSize != 12 && TLSSize != 24 && TLSSize != 32 && TLSSize != 48)
6055	D.Diag(DiagID: diag::err_drv_invalid_int_value)
6056	<< A->getOption().getName() << Value;
6057	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mtls_size_EQ);
6058	}
6059
6060	if (isTLSDESCEnabled(TC, Args))
6061	CmdArgs.push_back(Elt: "-enable-tlsdesc");
6062
6063	// Add the target cpu
6064	std::string CPU = getCPUName(D, Args, T: Triple, /*FromAs*/ false);
6065	if (!CPU.empty()) {
6066	CmdArgs.push_back(Elt: "-target-cpu");
6067	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPU));
6068	}
6069
6070	RenderTargetOptions(EffectiveTriple: Triple, Args, KernelOrKext, CmdArgs);
6071
6072	// Add clang-cl arguments.
6073	types::ID InputType = Input.getType();
6074	if (D.IsCLMode())
6075	AddClangCLArgs(Args, InputType, CmdArgs);
6076
6077	llvm::codegenoptions::DebugInfoKind DebugInfoKind =
6078	llvm::codegenoptions::NoDebugInfo;
6079	DwarfFissionKind DwarfFission = DwarfFissionKind::None;
6080	renderDebugOptions(TC, D, T: RawTriple, Args, IRInput: types::isLLVMIR(Id: InputType),
6081	CmdArgs, Output, DebugInfoKind, DwarfFission);
6082
6083	// Add the split debug info name to the command lines here so we
6084	// can propagate it to the backend.
6085	bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
6086	(TC.getTriple().isOSBinFormatELF() ||
6087	TC.getTriple().isOSBinFormatWasm() ||
6088	TC.getTriple().isOSBinFormatCOFF()) &&
6089	(isa<AssembleJobAction>(Val: JA) || isa<CompileJobAction>(Val: JA) ||
6090	isa<BackendJobAction>(Val: JA));
6091	if (SplitDWARF) {
6092	const char *SplitDWARFOut = SplitDebugName(JA, Args, Input, Output);
6093	CmdArgs.push_back(Elt: "-split-dwarf-file");
6094	CmdArgs.push_back(Elt: SplitDWARFOut);
6095	if (DwarfFission == DwarfFissionKind::Split) {
6096	CmdArgs.push_back(Elt: "-split-dwarf-output");
6097	CmdArgs.push_back(Elt: SplitDWARFOut);
6098	}
6099	}
6100
6101	// Pass the linker version in use.
6102	if (Arg *A = Args.getLastArg(Ids: options::OPT_mlinker_version_EQ)) {
6103	CmdArgs.push_back(Elt: "-target-linker-version");
6104	CmdArgs.push_back(Elt: A->getValue());
6105	}
6106
6107	// Explicitly error on some things we know we don't support and can't just
6108	// ignore.
6109	if (!Args.hasArg(Ids: options::OPT_fallow_unsupported)) {
6110	Arg *Unsupported;
6111	if (types::isCXX(Id: InputType) && RawTriple.isOSDarwin() &&
6112	TC.getArch() == llvm::Triple::x86) {
6113	if ((Unsupported = Args.getLastArg(Ids: options::OPT_fapple_kext)) ||
6114	(Unsupported = Args.getLastArg(Ids: options::OPT_mkernel)))
6115	D.Diag(DiagID: diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
6116	<< Unsupported->getOption().getName();
6117	}
6118	// The faltivec option has been superseded by the maltivec option.
6119	if ((Unsupported = Args.getLastArg(Ids: options::OPT_faltivec)))
6120	D.Diag(DiagID: diag::err_drv_clang_unsupported_opt_faltivec)
6121	<< Unsupported->getOption().getName()
6122	<< "please use -maltivec and include altivec.h explicitly";
6123	if ((Unsupported = Args.getLastArg(Ids: options::OPT_fno_altivec)))
6124	D.Diag(DiagID: diag::err_drv_clang_unsupported_opt_faltivec)
6125	<< Unsupported->getOption().getName() << "please use -mno-altivec";
6126	}
6127
6128	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_v);
6129
6130	if (Args.getLastArg(Ids: options::OPT_H)) {
6131	CmdArgs.push_back(Elt: "-H");
6132	CmdArgs.push_back(Elt: "-sys-header-deps");
6133	}
6134	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fshow_skipped_includes);
6135
6136	if (D.CCPrintHeadersFormat && !D.CCGenDiagnostics) {
6137	CmdArgs.push_back(Elt: "-header-include-file");
6138	CmdArgs.push_back(Elt: !D.CCPrintHeadersFilename.empty()
6139	? D.CCPrintHeadersFilename.c_str()
6140	: "-");
6141	CmdArgs.push_back(Elt: "-sys-header-deps");
6142	CmdArgs.push_back(Elt: Args.MakeArgString(
6143	Str: "-header-include-format=" +
6144	std::string(headerIncludeFormatKindToString(K: D.CCPrintHeadersFormat))));
6145	CmdArgs.push_back(
6146	Elt: Args.MakeArgString(Str: "-header-include-filtering=" +
6147	std::string(headerIncludeFilteringKindToString(
6148	K: D.CCPrintHeadersFiltering))));
6149	}
6150	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_P);
6151	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_print_ivar_layout);
6152
6153	if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
6154	CmdArgs.push_back(Elt: "-diagnostic-log-file");
6155	CmdArgs.push_back(Elt: !D.CCLogDiagnosticsFilename.empty()
6156	? D.CCLogDiagnosticsFilename.c_str()
6157	: "-");
6158	}
6159
6160	// Give the gen diagnostics more chances to succeed, by avoiding intentional
6161	// crashes.
6162	if (D.CCGenDiagnostics)
6163	CmdArgs.push_back(Elt: "-disable-pragma-debug-crash");
6164
6165	// Allow backend to put its diagnostic files in the same place as frontend
6166	// crash diagnostics files.
6167	if (Args.hasArg(Ids: options::OPT_fcrash_diagnostics_dir)) {
6168	StringRef Dir = Args.getLastArgValue(Id: options::OPT_fcrash_diagnostics_dir);
6169	CmdArgs.push_back(Elt: "-mllvm");
6170	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-crash-diagnostics-dir=" + Dir));
6171	}
6172
6173	bool UseSeparateSections = isUseSeparateSections(Triple);
6174
6175	if (Args.hasFlag(Pos: options::OPT_ffunction_sections,
6176	Neg: options::OPT_fno_function_sections, Default: UseSeparateSections)) {
6177	CmdArgs.push_back(Elt: "-ffunction-sections");
6178	}
6179
6180	if (Arg *A = Args.getLastArg(Ids: options::OPT_fbasic_block_address_map,
6181	Ids: options::OPT_fno_basic_block_address_map)) {
6182	if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF()) {
6183	if (A->getOption().matches(ID: options::OPT_fbasic_block_address_map))
6184	A->render(Args, Output&: CmdArgs);
6185	} else {
6186	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6187	<< A->getAsString(Args) << TripleStr;
6188	}
6189	}
6190
6191	if (Arg *A = Args.getLastArg(Ids: options::OPT_fbasic_block_sections_EQ)) {
6192	StringRef Val = A->getValue();
6193	if (Val == "labels") {
6194	D.Diag(DiagID: diag::warn_drv_deprecated_arg)
6195	<< A->getAsString(Args) << /*hasReplacement=*/true
6196	<< "-fbasic-block-address-map";
6197	CmdArgs.push_back(Elt: "-fbasic-block-address-map");
6198	} else if (Triple.isX86() && Triple.isOSBinFormatELF()) {
6199	if (Val != "all" && Val != "none" && !Val.starts_with(Prefix: "list="))
6200	D.Diag(DiagID: diag::err_drv_invalid_value)
6201	<< A->getAsString(Args) << A->getValue();
6202	else
6203	A->render(Args, Output&: CmdArgs);
6204	} else if (Triple.isAArch64() && Triple.isOSBinFormatELF()) {
6205	// "all" is not supported on AArch64 since branch relaxation creates new
6206	// basic blocks for some cross-section branches.
6207	if (Val != "labels" && Val != "none" && !Val.starts_with(Prefix: "list="))
6208	D.Diag(DiagID: diag::err_drv_invalid_value)
6209	<< A->getAsString(Args) << A->getValue();
6210	else
6211	A->render(Args, Output&: CmdArgs);
6212	} else if (Triple.isNVPTX()) {
6213	// Do not pass the option to the GPU compilation. We still want it enabled
6214	// for the host-side compilation, so seeing it here is not an error.
6215	} else if (Val != "none") {
6216	// =none is allowed everywhere. It's useful for overriding the option
6217	// and is the same as not specifying the option.
6218	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6219	<< A->getAsString(Args) << TripleStr;
6220	}
6221	}
6222
6223	bool HasDefaultDataSections = Triple.isOSBinFormatXCOFF();
6224	if (Args.hasFlag(Pos: options::OPT_fdata_sections, Neg: options::OPT_fno_data_sections,
6225	Default: UseSeparateSections || HasDefaultDataSections)) {
6226	CmdArgs.push_back(Elt: "-fdata-sections");
6227	}
6228
6229	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_funique_section_names,
6230	Neg: options::OPT_fno_unique_section_names);
6231	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fseparate_named_sections,
6232	Neg: options::OPT_fno_separate_named_sections);
6233	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_funique_internal_linkage_names,
6234	Neg: options::OPT_fno_unique_internal_linkage_names);
6235	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_funique_basic_block_section_names,
6236	Neg: options::OPT_fno_unique_basic_block_section_names);
6237
6238	if (Arg *A = Args.getLastArg(Ids: options::OPT_fsplit_machine_functions,
6239	Ids: options::OPT_fno_split_machine_functions)) {
6240	if (!A->getOption().matches(ID: options::OPT_fno_split_machine_functions)) {
6241	// This codegen pass is only available on x86 and AArch64 ELF targets.
6242	if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF())
6243	A->render(Args, Output&: CmdArgs);
6244	else
6245	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6246	<< A->getAsString(Args) << TripleStr;
6247	}
6248	}
6249
6250	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_finstrument_functions,
6251	Ids: options::OPT_finstrument_functions_after_inlining,
6252	Ids: options::OPT_finstrument_function_entry_bare);
6253	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fconvergent_functions,
6254	Ids: options::OPT_fno_convergent_functions);
6255
6256	// NVPTX doesn't support PGO or coverage
6257	if (!Triple.isNVPTX())
6258	addPGOAndCoverageFlags(TC, C, JA, Output, Args, SanArgs&: SanitizeArgs, CmdArgs);
6259
6260	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fclang_abi_compat_EQ);
6261
6262	if (getLastProfileSampleUseArg(Args) &&
6263	Args.hasFlag(Pos: options::OPT_fsample_profile_use_profi,
6264	Neg: options::OPT_fno_sample_profile_use_profi, Default: true)) {
6265	CmdArgs.push_back(Elt: "-mllvm");
6266	CmdArgs.push_back(Elt: "-sample-profile-use-profi");
6267	}
6268
6269	// Add runtime flag for PS4/PS5 when PGO, coverage, or sanitizers are enabled.
6270	if (RawTriple.isPS() &&
6271	!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs)) {
6272	PScpu::addProfileRTArgs(TC, Args, CmdArgs);
6273	PScpu::addSanitizerArgs(TC, Args, CmdArgs);
6274	}
6275
6276	// Pass options for controlling the default header search paths.
6277	if (Args.hasArg(Ids: options::OPT_nostdinc)) {
6278	CmdArgs.push_back(Elt: "-nostdsysteminc");
6279	CmdArgs.push_back(Elt: "-nobuiltininc");
6280	} else {
6281	if (Args.hasArg(Ids: options::OPT_nostdlibinc))
6282	CmdArgs.push_back(Elt: "-nostdsysteminc");
6283	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_nostdincxx);
6284	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_nobuiltininc);
6285	}
6286
6287	// Pass the path to compiler resource files.
6288	CmdArgs.push_back(Elt: "-resource-dir");
6289	CmdArgs.push_back(Elt: D.ResourceDir.c_str());
6290
6291	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_working_directory);
6292
6293	// Add preprocessing options like -I, -D, etc. if we are using the
6294	// preprocessor.
6295	//
6296	// FIXME: Support -fpreprocessed
6297	if (types::getPreprocessedType(Id: InputType) != types::TY_INVALID)
6298	AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
6299
6300	// Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
6301	// that "The compiler can only warn and ignore the option if not recognized".
6302	// When building with ccache, it will pass -D options to clang even on
6303	// preprocessed inputs and configure concludes that -fPIC is not supported.
6304	Args.ClaimAllArgs(Id0: options::OPT_D);
6305
6306	// Warn about ignored options to clang.
6307	for (const Arg *A :
6308	Args.filtered(Ids: options::OPT_clang_ignored_gcc_optimization_f_Group)) {
6309	D.Diag(DiagID: diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
6310	A->claim();
6311	}
6312
6313	for (const Arg *A :
6314	Args.filtered(Ids: options::OPT_clang_ignored_legacy_options_Group)) {
6315	D.Diag(DiagID: diag::warn_ignored_clang_option) << A->getAsString(Args);
6316	A->claim();
6317	}
6318
6319	claimNoWarnArgs(Args);
6320
6321	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_R_Group);
6322
6323	for (const Arg *A :
6324	Args.filtered(Ids: options::OPT_W_Group, Ids: options::OPT__SLASH_wd)) {
6325	A->claim();
6326	if (A->getOption().getID() == options::OPT__SLASH_wd) {
6327	unsigned WarningNumber;
6328	if (StringRef(A->getValue()).getAsInteger(Radix: 10, Result&: WarningNumber)) {
6329	D.Diag(DiagID: diag::err_drv_invalid_int_value)
6330	<< A->getAsString(Args) << A->getValue();
6331	continue;
6332	}
6333
6334	if (auto Group = diagGroupFromCLWarningID(WarningNumber)) {
6335	CmdArgs.push_back(Elt: Args.MakeArgString(
6336	Str: "-Wno-" + DiagnosticIDs::getWarningOptionForGroup(*Group)));
6337	}
6338	continue;
6339	}
6340	A->render(Args, Output&: CmdArgs);
6341	}
6342
6343	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_Wsystem_headers_in_module_EQ);
6344
6345	if (Args.hasFlag(Pos: options::OPT_pedantic, Neg: options::OPT_no_pedantic, Default: false))
6346	CmdArgs.push_back(Elt: "-pedantic");
6347	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_pedantic_errors);
6348	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_w);
6349
6350	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_ffixed_point,
6351	Neg: options::OPT_fno_fixed_point);
6352
6353	if (Arg *A = Args.getLastArg(Ids: options::OPT_fcxx_abi_EQ))
6354	A->render(Args, Output&: CmdArgs);
6355
6356	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fexperimental_relative_cxx_abi_vtables,
6357	Ids: options::OPT_fno_experimental_relative_cxx_abi_vtables);
6358
6359	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fexperimental_omit_vtable_rtti,
6360	Ids: options::OPT_fno_experimental_omit_vtable_rtti);
6361
6362	if (Arg *A = Args.getLastArg(Ids: options::OPT_ffuchsia_api_level_EQ))
6363	A->render(Args, Output&: CmdArgs);
6364
6365	// Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
6366	// (-ansi is equivalent to -std=c89 or -std=c++98).
6367	//
6368	// If a std is supplied, only add -trigraphs if it follows the
6369	// option.
6370	bool ImplyVCPPCVer = false;
6371	bool ImplyVCPPCXXVer = false;
6372	const Arg *Std = Args.getLastArg(Ids: options::OPT_std_EQ, Ids: options::OPT_ansi);
6373	if (Std) {
6374	if (Std->getOption().matches(ID: options::OPT_ansi))
6375	if (types::isCXX(Id: InputType))
6376	CmdArgs.push_back(Elt: "-std=c++98");
6377	else
6378	CmdArgs.push_back(Elt: "-std=c89");
6379	else
6380	Std->render(Args, Output&: CmdArgs);
6381
6382	// If -f(no-)trigraphs appears after the language standard flag, honor it.
6383	if (Arg *A = Args.getLastArg(Ids: options::OPT_std_EQ, Ids: options::OPT_ansi,
6384	Ids: options::OPT_ftrigraphs,
6385	Ids: options::OPT_fno_trigraphs))
6386	if (A != Std)
6387	A->render(Args, Output&: CmdArgs);
6388	} else {
6389	// Honor -std-default.
6390	//
6391	// FIXME: Clang doesn't correctly handle -std= when the input language
6392	// doesn't match. For the time being just ignore this for C++ inputs;
6393	// eventually we want to do all the standard defaulting here instead of
6394	// splitting it between the driver and clang -cc1.
6395	if (!types::isCXX(Id: InputType)) {
6396	if (!Args.hasArg(Ids: options::OPT__SLASH_std)) {
6397	Args.AddAllArgsTranslated(Output&: CmdArgs, Id0: options::OPT_std_default_EQ, Translation: "-std=",
6398	/*Joined=*/true);
6399	} else
6400	ImplyVCPPCVer = true;
6401	}
6402	else if (IsWindowsMSVC)
6403	ImplyVCPPCXXVer = true;
6404
6405	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftrigraphs,
6406	Ids: options::OPT_fno_trigraphs);
6407	}
6408
6409	// GCC's behavior for -Wwrite-strings is a bit strange:
6410	// * In C, this "warning flag" changes the types of string literals from
6411	// 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
6412	// for the discarded qualifier.
6413	// * In C++, this is just a normal warning flag.
6414	//
6415	// Implementing this warning correctly in C is hard, so we follow GCC's
6416	// behavior for now. FIXME: Directly diagnose uses of a string literal as
6417	// a non-const char* in C, rather than using this crude hack.
6418	if (!types::isCXX(Id: InputType)) {
6419	// FIXME: This should behave just like a warning flag, and thus should also
6420	// respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
6421	Arg *WriteStrings =
6422	Args.getLastArg(Ids: options::OPT_Wwrite_strings,
6423	Ids: options::OPT_Wno_write_strings, Ids: options::OPT_w);
6424	if (WriteStrings &&
6425	WriteStrings->getOption().matches(ID: options::OPT_Wwrite_strings))
6426	CmdArgs.push_back(Elt: "-fconst-strings");
6427	}
6428
6429	// GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
6430	// during C++ compilation, which it is by default. GCC keeps this define even
6431	// in the presence of '-w', match this behavior bug-for-bug.
6432	if (types::isCXX(Id: InputType) &&
6433	Args.hasFlag(Pos: options::OPT_Wdeprecated, Neg: options::OPT_Wno_deprecated,
6434	Default: true)) {
6435	CmdArgs.push_back(Elt: "-fdeprecated-macro");
6436	}
6437
6438	// Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
6439	if (Arg *Asm = Args.getLastArg(Ids: options::OPT_fasm, Ids: options::OPT_fno_asm)) {
6440	if (Asm->getOption().matches(ID: options::OPT_fasm))
6441	CmdArgs.push_back(Elt: "-fgnu-keywords");
6442	else
6443	CmdArgs.push_back(Elt: "-fno-gnu-keywords");
6444	}
6445
6446	if (!ShouldEnableAutolink(Args, TC, JA))
6447	CmdArgs.push_back(Elt: "-fno-autolink");
6448
6449	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftemplate_depth_EQ);
6450	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_foperator_arrow_depth_EQ);
6451	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fconstexpr_depth_EQ);
6452	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fconstexpr_steps_EQ);
6453
6454	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fexperimental_library);
6455
6456	if (Args.hasArg(Ids: options::OPT_fexperimental_new_constant_interpreter))
6457	CmdArgs.push_back(Elt: "-fexperimental-new-constant-interpreter");
6458
6459	if (Arg *A = Args.getLastArg(Ids: options::OPT_fbracket_depth_EQ)) {
6460	CmdArgs.push_back(Elt: "-fbracket-depth");
6461	CmdArgs.push_back(Elt: A->getValue());
6462	}
6463
6464	if (Arg *A = Args.getLastArg(Ids: options::OPT_Wlarge_by_value_copy_EQ,
6465	Ids: options::OPT_Wlarge_by_value_copy_def)) {
6466	if (A->getNumValues()) {
6467	StringRef bytes = A->getValue();
6468	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-Wlarge-by-value-copy=" + bytes));
6469	} else
6470	CmdArgs.push_back(Elt: "-Wlarge-by-value-copy=64"); // default value
6471	}
6472
6473	if (Args.hasArg(Ids: options::OPT_relocatable_pch))
6474	CmdArgs.push_back(Elt: "-relocatable-pch");
6475
6476	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fcf_runtime_abi_EQ)) {
6477	static const char *kCFABIs[] = {
6478	"standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
6479	};
6480
6481	if (!llvm::is_contained(Range&: kCFABIs, Element: StringRef(A->getValue())))
6482	D.Diag(DiagID: diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
6483	else
6484	A->render(Args, Output&: CmdArgs);
6485	}
6486
6487	if (Arg *A = Args.getLastArg(Ids: options::OPT_fconstant_string_class_EQ)) {
6488	CmdArgs.push_back(Elt: "-fconstant-string-class");
6489	CmdArgs.push_back(Elt: A->getValue());
6490	}
6491
6492	if (Arg *A = Args.getLastArg(Ids: options::OPT_ftabstop_EQ)) {
6493	CmdArgs.push_back(Elt: "-ftabstop");
6494	CmdArgs.push_back(Elt: A->getValue());
6495	}
6496
6497	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fstack_size_section,
6498	Neg: options::OPT_fno_stack_size_section);
6499
6500	if (Args.hasArg(Ids: options::OPT_fstack_usage)) {
6501	CmdArgs.push_back(Elt: "-stack-usage-file");
6502
6503	if (Arg *OutputOpt = Args.getLastArg(Ids: options::OPT_o)) {
6504	SmallString<128> OutputFilename(OutputOpt->getValue());
6505	llvm::sys::path::replace_extension(path&: OutputFilename, extension: "su");
6506	CmdArgs.push_back(Elt: Args.MakeArgString(Str: OutputFilename));
6507	} else
6508	CmdArgs.push_back(
6509	Elt: Args.MakeArgString(Str: Twine(getBaseInputStem(Args, Inputs)) + ".su"));
6510	}
6511
6512	CmdArgs.push_back(Elt: "-ferror-limit");
6513	if (Arg *A = Args.getLastArg(Ids: options::OPT_ferror_limit_EQ))
6514	CmdArgs.push_back(Elt: A->getValue());
6515	else
6516	CmdArgs.push_back(Elt: "19");
6517
6518	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fconstexpr_backtrace_limit_EQ);
6519	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fmacro_backtrace_limit_EQ);
6520	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftemplate_backtrace_limit_EQ);
6521	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fspell_checking_limit_EQ);
6522	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fcaret_diagnostics_max_lines_EQ);
6523
6524	// Pass -fmessage-length=.
6525	unsigned MessageLength = 0;
6526	if (Arg *A = Args.getLastArg(Ids: options::OPT_fmessage_length_EQ)) {
6527	StringRef V(A->getValue());
6528	if (V.getAsInteger(Radix: 0, Result&: MessageLength))
6529	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
6530	<< V << A->getOption().getName();
6531	} else {
6532	// If -fmessage-length=N was not specified, determine whether this is a
6533	// terminal and, if so, implicitly define -fmessage-length appropriately.
6534	MessageLength = llvm::sys::Process::StandardErrColumns();
6535	}
6536	if (MessageLength != 0)
6537	CmdArgs.push_back(
6538	Elt: Args.MakeArgString(Str: "-fmessage-length=" + Twine(MessageLength)));
6539
6540	if (Arg *A = Args.getLastArg(Ids: options::OPT_frandomize_layout_seed_EQ))
6541	CmdArgs.push_back(
6542	Elt: Args.MakeArgString(Str: "-frandomize-layout-seed=" + Twine(A->getValue(N: 0))));
6543
6544	if (Arg *A = Args.getLastArg(Ids: options::OPT_frandomize_layout_seed_file_EQ))
6545	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-frandomize-layout-seed-file=" +
6546	Twine(A->getValue(N: 0))));
6547
6548	// -fvisibility= and -fvisibility-ms-compat are of a piece.
6549	if (const Arg *A = Args.getLastArg(Ids: options::OPT_fvisibility_EQ,
6550	Ids: options::OPT_fvisibility_ms_compat)) {
6551	if (A->getOption().matches(ID: options::OPT_fvisibility_EQ)) {
6552	A->render(Args, Output&: CmdArgs);
6553	} else {
6554	assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
6555	CmdArgs.push_back(Elt: "-fvisibility=hidden");
6556	CmdArgs.push_back(Elt: "-ftype-visibility=default");
6557	}
6558	} else if (IsOpenMPDevice) {
6559	// When compiling for the OpenMP device we want protected visibility by
6560	// default. This prevents the device from accidentally preempting code on
6561	// the host, makes the system more robust, and improves performance.
6562	CmdArgs.push_back(Elt: "-fvisibility=protected");
6563	}
6564
6565	// PS4/PS5 process these options in addClangTargetOptions.
6566	if (!RawTriple.isPS()) {
6567	if (const Arg *A =
6568	Args.getLastArg(Ids: options::OPT_fvisibility_from_dllstorageclass,
6569	Ids: options::OPT_fno_visibility_from_dllstorageclass)) {
6570	if (A->getOption().matches(
6571	ID: options::OPT_fvisibility_from_dllstorageclass)) {
6572	CmdArgs.push_back(Elt: "-fvisibility-from-dllstorageclass");
6573	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fvisibility_dllexport_EQ);
6574	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fvisibility_nodllstorageclass_EQ);
6575	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fvisibility_externs_dllimport_EQ);
6576	Args.AddLastArg(Output&: CmdArgs,
6577	Ids: options::OPT_fvisibility_externs_nodllstorageclass_EQ);
6578	}
6579	}
6580	}
6581
6582	if (Args.hasFlag(Pos: options::OPT_fvisibility_inlines_hidden,
6583	Neg: options::OPT_fno_visibility_inlines_hidden, Default: false))
6584	CmdArgs.push_back(Elt: "-fvisibility-inlines-hidden");
6585
6586	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fvisibility_inlines_hidden_static_local_var,
6587	Ids: options::OPT_fno_visibility_inlines_hidden_static_local_var);
6588
6589	// -fvisibility-global-new-delete-hidden is a deprecated spelling of
6590	// -fvisibility-global-new-delete=force-hidden.
6591	if (const Arg *A =
6592	Args.getLastArg(Ids: options::OPT_fvisibility_global_new_delete_hidden)) {
6593	D.Diag(DiagID: diag::warn_drv_deprecated_arg)
6594	<< A->getAsString(Args) << /*hasReplacement=*/true
6595	<< "-fvisibility-global-new-delete=force-hidden";
6596	}
6597
6598	if (const Arg *A =
6599	Args.getLastArg(Ids: options::OPT_fvisibility_global_new_delete_EQ,
6600	Ids: options::OPT_fvisibility_global_new_delete_hidden)) {
6601	if (A->getOption().matches(ID: options::OPT_fvisibility_global_new_delete_EQ)) {
6602	A->render(Args, Output&: CmdArgs);
6603	} else {
6604	assert(A->getOption().matches(
6605	options::OPT_fvisibility_global_new_delete_hidden));
6606	CmdArgs.push_back(Elt: "-fvisibility-global-new-delete=force-hidden");
6607	}
6608	}
6609
6610	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftlsmodel_EQ);
6611
6612	if (Args.hasFlag(Pos: options::OPT_fnew_infallible,
6613	Neg: options::OPT_fno_new_infallible, Default: false))
6614	CmdArgs.push_back(Elt: "-fnew-infallible");
6615
6616	if (Args.hasFlag(Pos: options::OPT_fno_operator_names,
6617	Neg: options::OPT_foperator_names, Default: false))
6618	CmdArgs.push_back(Elt: "-fno-operator-names");
6619
6620	// Forward -f (flag) options which we can pass directly.
6621	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_femit_all_decls);
6622	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fheinous_gnu_extensions);
6623	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fdigraphs, Ids: options::OPT_fno_digraphs);
6624	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fzero_call_used_regs_EQ);
6625	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fraw_string_literals,
6626	Ids: options::OPT_fno_raw_string_literals);
6627
6628	if (Args.hasFlag(Pos: options::OPT_femulated_tls, Neg: options::OPT_fno_emulated_tls,
6629	Default: Triple.hasDefaultEmulatedTLS()))
6630	CmdArgs.push_back(Elt: "-femulated-tls");
6631
6632	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fcheck_new,
6633	Neg: options::OPT_fno_check_new);
6634
6635	if (Arg *A = Args.getLastArg(Ids: options::OPT_fzero_call_used_regs_EQ)) {
6636	// FIXME: There's no reason for this to be restricted to X86. The backend
6637	// code needs to be changed to include the appropriate function calls
6638	// automatically.
6639	if (!Triple.isX86() && !Triple.isAArch64())
6640	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6641	<< A->getAsString(Args) << TripleStr;
6642	}
6643
6644	// AltiVec-like language extensions aren't relevant for assembling.
6645	if (!isa<PreprocessJobAction>(Val: JA) || Output.getType() != types::TY_PP_Asm)
6646	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fzvector);
6647
6648	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fdiagnostics_show_template_tree);
6649	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fno_elide_type);
6650
6651	// Forward flags for OpenMP. We don't do this if the current action is an
6652	// device offloading action other than OpenMP.
6653	if (Args.hasFlag(Pos: options::OPT_fopenmp, PosAlias: options::OPT_fopenmp_EQ,
6654	Neg: options::OPT_fno_openmp, Default: false) &&
6655	!Args.hasFlag(Pos: options::OPT_foffload_via_llvm,
6656	Neg: options::OPT_fno_offload_via_llvm, Default: false) &&
6657	(JA.isDeviceOffloading(OKind: Action::OFK_None) ||
6658	JA.isDeviceOffloading(OKind: Action::OFK_OpenMP))) {
6659	switch (D.getOpenMPRuntime(Args)) {
6660	case Driver::OMPRT_OMP:
6661	case Driver::OMPRT_IOMP5:
6662	// Clang can generate useful OpenMP code for these two runtime libraries.
6663	CmdArgs.push_back(Elt: "-fopenmp");
6664
6665	// If no option regarding the use of TLS in OpenMP codegeneration is
6666	// given, decide a default based on the target. Otherwise rely on the
6667	// options and pass the right information to the frontend.
6668	if (!Args.hasFlag(Pos: options::OPT_fopenmp_use_tls,
6669	Neg: options::OPT_fnoopenmp_use_tls, /*Default=*/true))
6670	CmdArgs.push_back(Elt: "-fnoopenmp-use-tls");
6671	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fopenmp_simd,
6672	Ids: options::OPT_fno_openmp_simd);
6673	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fopenmp_enable_irbuilder);
6674	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fopenmp_version_EQ);
6675	if (!Args.hasFlag(Pos: options::OPT_fopenmp_extensions,
6676	Neg: options::OPT_fno_openmp_extensions, /*Default=*/true))
6677	CmdArgs.push_back(Elt: "-fno-openmp-extensions");
6678	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fopenmp_cuda_number_of_sm_EQ);
6679	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
6680	Args.AddAllArgs(Output&: CmdArgs,
6681	Id0: options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
6682	if (Args.hasFlag(Pos: options::OPT_fopenmp_optimistic_collapse,
6683	Neg: options::OPT_fno_openmp_optimistic_collapse,
6684	/*Default=*/false))
6685	CmdArgs.push_back(Elt: "-fopenmp-optimistic-collapse");
6686
6687	// When in OpenMP offloading mode with NVPTX target, forward
6688	// cuda-mode flag
6689	if (Args.hasFlag(Pos: options::OPT_fopenmp_cuda_mode,
6690	Neg: options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
6691	CmdArgs.push_back(Elt: "-fopenmp-cuda-mode");
6692
6693	// When in OpenMP offloading mode, enable debugging on the device.
6694	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fopenmp_target_debug_EQ);
6695	if (Args.hasFlag(Pos: options::OPT_fopenmp_target_debug,
6696	Neg: options::OPT_fno_openmp_target_debug, /*Default=*/false))
6697	CmdArgs.push_back(Elt: "-fopenmp-target-debug");
6698
6699	// When in OpenMP offloading mode, forward assumptions information about
6700	// thread and team counts in the device.
6701	if (Args.hasFlag(Pos: options::OPT_fopenmp_assume_teams_oversubscription,
6702	Neg: options::OPT_fno_openmp_assume_teams_oversubscription,
6703	/*Default=*/false))
6704	CmdArgs.push_back(Elt: "-fopenmp-assume-teams-oversubscription");
6705	if (Args.hasFlag(Pos: options::OPT_fopenmp_assume_threads_oversubscription,
6706	Neg: options::OPT_fno_openmp_assume_threads_oversubscription,
6707	/*Default=*/false))
6708	CmdArgs.push_back(Elt: "-fopenmp-assume-threads-oversubscription");
6709	if (Args.hasArg(Ids: options::OPT_fopenmp_assume_no_thread_state))
6710	CmdArgs.push_back(Elt: "-fopenmp-assume-no-thread-state");
6711	if (Args.hasArg(Ids: options::OPT_fopenmp_assume_no_nested_parallelism))
6712	CmdArgs.push_back(Elt: "-fopenmp-assume-no-nested-parallelism");
6713	if (Args.hasArg(Ids: options::OPT_fopenmp_offload_mandatory))
6714	CmdArgs.push_back(Elt: "-fopenmp-offload-mandatory");
6715	if (Args.hasArg(Ids: options::OPT_fopenmp_force_usm))
6716	CmdArgs.push_back(Elt: "-fopenmp-force-usm");
6717	break;
6718	default:
6719	// By default, if Clang doesn't know how to generate useful OpenMP code
6720	// for a specific runtime library, we just don't pass the '-fopenmp' flag
6721	// down to the actual compilation.
6722	// FIXME: It would be better to have a mode which *only* omits IR
6723	// generation based on the OpenMP support so that we get consistent
6724	// semantic analysis, etc.
6725	break;
6726	}
6727	} else {
6728	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fopenmp_simd,
6729	Ids: options::OPT_fno_openmp_simd);
6730	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fopenmp_version_EQ);
6731	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fopenmp_extensions,
6732	Neg: options::OPT_fno_openmp_extensions);
6733	}
6734	// Forward the offload runtime change to code generation, liboffload implies
6735	// new driver. Otherwise, check if we should forward the new driver to change
6736	// offloading code generation.
6737	if (Args.hasFlag(Pos: options::OPT_foffload_via_llvm,
6738	Neg: options::OPT_fno_offload_via_llvm, Default: false)) {
6739	CmdArgs.append(IL: {"--offload-new-driver", "-foffload-via-llvm"});
6740	} else if (Args.hasFlag(Pos: options::OPT_offload_new_driver,
6741	Neg: options::OPT_no_offload_new_driver,
6742	Default: C.isOffloadingHostKind(Kind: Action::OFK_Cuda))) {
6743	CmdArgs.push_back(Elt: "--offload-new-driver");
6744	}
6745
6746	const XRayArgs &XRay = TC.getXRayArgs(Args);
6747	XRay.addArgs(TC, Args, CmdArgs, InputType);
6748
6749	for (const auto &Filename :
6750	Args.getAllArgValues(Id: options::OPT_fprofile_list_EQ)) {
6751	if (D.getVFS().exists(Path: Filename))
6752	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fprofile-list=" + Filename));
6753	else
6754	D.Diag(DiagID: clang::diag::err_drv_no_such_file) << Filename;
6755	}
6756
6757	if (Arg *A = Args.getLastArg(Ids: options::OPT_fpatchable_function_entry_EQ)) {
6758	StringRef S0 = A->getValue(), S = S0;
6759	unsigned Size, Offset = 0;
6760	if (!Triple.isAArch64() && !Triple.isLoongArch() && !Triple.isRISCV() &&
6761	!Triple.isX86() &&
6762	!(!Triple.isOSAIX() && (Triple.getArch() == llvm::Triple::ppc ||
6763	Triple.getArch() == llvm::Triple::ppc64)))
6764	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6765	<< A->getAsString(Args) << TripleStr;
6766	else if (S.consumeInteger(Radix: 10, Result&: Size) ||
6767	(!S.empty() &&
6768	(!S.consume_front(Prefix: ",") || S.consumeInteger(Radix: 10, Result&: Offset))) ||
6769	(!S.empty() && (!S.consume_front(Prefix: ",") || S.empty())))
6770	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
6771	<< S0 << A->getOption().getName();
6772	else if (Size < Offset)
6773	D.Diag(DiagID: diag::err_drv_unsupported_fpatchable_function_entry_argument);
6774	else {
6775	CmdArgs.push_back(Elt: Args.MakeArgString(Str: A->getSpelling() + Twine(Size)));
6776	CmdArgs.push_back(Elt: Args.MakeArgString(
6777	Str: "-fpatchable-function-entry-offset=" + Twine(Offset)));
6778	if (!S.empty())
6779	CmdArgs.push_back(
6780	Elt: Args.MakeArgString(Str: "-fpatchable-function-entry-section=" + S));
6781	}
6782	}
6783
6784	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fms_hotpatch);
6785
6786	if (Args.hasArg(Ids: options::OPT_fms_secure_hotpatch_functions_file))
6787	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fms_secure_hotpatch_functions_file);
6788
6789	for (const auto &A :
6790	Args.getAllArgValues(Id: options::OPT_fms_secure_hotpatch_functions_list))
6791	CmdArgs.push_back(
6792	Elt: Args.MakeArgString(Str: "-fms-secure-hotpatch-functions-list=" + Twine(A)));
6793
6794	if (TC.SupportsProfiling()) {
6795	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_pg);
6796
6797	llvm::Triple::ArchType Arch = TC.getArch();
6798	if (Arg *A = Args.getLastArg(Ids: options::OPT_mfentry)) {
6799	if (Arch == llvm::Triple::systemz || TC.getTriple().isX86())
6800	A->render(Args, Output&: CmdArgs);
6801	else
6802	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6803	<< A->getAsString(Args) << TripleStr;
6804	}
6805	if (Arg *A = Args.getLastArg(Ids: options::OPT_mnop_mcount)) {
6806	if (Arch == llvm::Triple::systemz)
6807	A->render(Args, Output&: CmdArgs);
6808	else
6809	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6810	<< A->getAsString(Args) << TripleStr;
6811	}
6812	if (Arg *A = Args.getLastArg(Ids: options::OPT_mrecord_mcount)) {
6813	if (Arch == llvm::Triple::systemz)
6814	A->render(Args, Output&: CmdArgs);
6815	else
6816	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6817	<< A->getAsString(Args) << TripleStr;
6818	}
6819	}
6820
6821	if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_pg)) {
6822	if (TC.getTriple().isOSzOS()) {
6823	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6824	<< A->getAsString(Args) << TripleStr;
6825	}
6826	}
6827	if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_p)) {
6828	if (!(TC.getTriple().isOSAIX() || TC.getTriple().isOSOpenBSD())) {
6829	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6830	<< A->getAsString(Args) << TripleStr;
6831	}
6832	}
6833	if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_p, Ids: options::OPT_pg)) {
6834	if (A->getOption().matches(ID: options::OPT_p)) {
6835	A->claim();
6836	if (TC.getTriple().isOSAIX() && !Args.hasArgNoClaim(Ids: options::OPT_pg))
6837	CmdArgs.push_back(Elt: "-pg");
6838	}
6839	}
6840
6841	// Reject AIX-specific link options on other targets.
6842	if (!TC.getTriple().isOSAIX()) {
6843	for (const Arg *A : Args.filtered(Ids: options::OPT_b, Ids: options::OPT_K,
6844	Ids: options::OPT_mxcoff_build_id_EQ)) {
6845	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
6846	<< A->getSpelling() << TripleStr;
6847	}
6848	}
6849
6850	if (Args.getLastArg(Ids: options::OPT_fapple_kext) ||
6851	(Args.hasArg(Ids: options::OPT_mkernel) && types::isCXX(Id: InputType)))
6852	CmdArgs.push_back(Elt: "-fapple-kext");
6853
6854	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_altivec_src_compat);
6855	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_flax_vector_conversions_EQ);
6856	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fobjc_sender_dependent_dispatch);
6857	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fdiagnostics_print_source_range_info);
6858	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fdiagnostics_parseable_fixits);
6859	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftime_report);
6860	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftime_report_EQ);
6861	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftime_report_json);
6862	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftrapv);
6863	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_malign_double);
6864	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fno_temp_file);
6865
6866	if (const char *Name = C.getTimeTraceFile(JA: &JA)) {
6867	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ftime-trace=" + Twine(Name)));
6868	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftime_trace_granularity_EQ);
6869	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftime_trace_verbose);
6870	}
6871
6872	if (Arg *A = Args.getLastArg(Ids: options::OPT_ftrapv_handler_EQ)) {
6873	CmdArgs.push_back(Elt: "-ftrapv-handler");
6874	CmdArgs.push_back(Elt: A->getValue());
6875	}
6876
6877	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ftrap_function_EQ);
6878
6879	// Handle -f[no-]wrapv and -f[no-]strict-overflow, which are used by both
6880	// clang and flang.
6881	renderCommonIntegerOverflowOptions(Args, CmdArgs);
6882
6883	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_ffinite_loops,
6884	Ids: options::OPT_fno_finite_loops);
6885
6886	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fwritable_strings);
6887	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_funroll_loops,
6888	Ids: options::OPT_fno_unroll_loops);
6889	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_floop_interchange,
6890	Ids: options::OPT_fno_loop_interchange);
6891
6892	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fstrict_flex_arrays_EQ);
6893
6894	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_pthread);
6895
6896	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_mspeculative_load_hardening,
6897	Neg: options::OPT_mno_speculative_load_hardening);
6898
6899	RenderSSPOptions(D, TC, Args, CmdArgs, KernelOrKext);
6900	RenderSCPOptions(TC, Args, CmdArgs);
6901	RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
6902
6903	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fswift_async_fp_EQ);
6904
6905	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_mstackrealign,
6906	Neg: options::OPT_mno_stackrealign);
6907
6908	if (const Arg *A = Args.getLastArg(Ids: options::OPT_mstack_alignment)) {
6909	StringRef Value = A->getValue();
6910	int64_t Alignment = 0;
6911	if (Value.getAsInteger(Radix: 10, Result&: Alignment) || Alignment < 0)
6912	D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
6913	<< Value << A->getOption().getName();
6914	else if (Alignment & (Alignment - 1))
6915	D.Diag(DiagID: diag::err_drv_alignment_not_power_of_two)
6916	<< A->getAsString(Args) << Value;
6917	else
6918	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mstack-alignment=" + Value));
6919	}
6920
6921	if (Args.hasArg(Ids: options::OPT_mstack_probe_size)) {
6922	StringRef Size = Args.getLastArgValue(Id: options::OPT_mstack_probe_size);
6923
6924	if (!Size.empty())
6925	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mstack-probe-size=" + Size));
6926	else
6927	CmdArgs.push_back(Elt: "-mstack-probe-size=0");
6928	}
6929
6930	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_mstack_arg_probe,
6931	Neg: options::OPT_mno_stack_arg_probe);
6932
6933	if (Arg *A = Args.getLastArg(Ids: options::OPT_mrestrict_it,
6934	Ids: options::OPT_mno_restrict_it)) {
6935	if (A->getOption().matches(ID: options::OPT_mrestrict_it)) {
6936	CmdArgs.push_back(Elt: "-mllvm");
6937	CmdArgs.push_back(Elt: "-arm-restrict-it");
6938	} else {
6939	CmdArgs.push_back(Elt: "-mllvm");
6940	CmdArgs.push_back(Elt: "-arm-default-it");
6941	}
6942	}
6943
6944	// Forward -cl options to -cc1
6945	RenderOpenCLOptions(Args, CmdArgs, InputType);
6946
6947	// Forward hlsl options to -cc1
6948	RenderHLSLOptions(Args, CmdArgs, InputType);
6949
6950	// Forward OpenACC options to -cc1
6951	RenderOpenACCOptions(D, Args, CmdArgs, InputType);
6952
6953	if (IsHIP) {
6954	if (Args.hasFlag(Pos: options::OPT_fhip_new_launch_api,
6955	Neg: options::OPT_fno_hip_new_launch_api, Default: true))
6956	CmdArgs.push_back(Elt: "-fhip-new-launch-api");
6957	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fgpu_allow_device_init,
6958	Neg: options::OPT_fno_gpu_allow_device_init);
6959	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_hipstdpar);
6960	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_hipstdpar_interpose_alloc);
6961	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fhip_kernel_arg_name,
6962	Neg: options::OPT_fno_hip_kernel_arg_name);
6963	}
6964
6965	if (IsCuda || IsHIP) {
6966	if (IsRDCMode)
6967	CmdArgs.push_back(Elt: "-fgpu-rdc");
6968	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fgpu_defer_diag,
6969	Neg: options::OPT_fno_gpu_defer_diag);
6970	if (Args.hasFlag(Pos: options::OPT_fgpu_exclude_wrong_side_overloads,
6971	Neg: options::OPT_fno_gpu_exclude_wrong_side_overloads,
6972	Default: false)) {
6973	CmdArgs.push_back(Elt: "-fgpu-exclude-wrong-side-overloads");
6974	CmdArgs.push_back(Elt: "-fgpu-defer-diag");
6975	}
6976	}
6977
6978	// Forward --no-offloadlib to -cc1.
6979	if (!Args.hasFlag(Pos: options::OPT_offloadlib, Neg: options::OPT_no_offloadlib, Default: true))
6980	CmdArgs.push_back(Elt: "--no-offloadlib");
6981
6982	if (Arg *A = Args.getLastArg(Ids: options::OPT_fcf_protection_EQ)) {
6983	CmdArgs.push_back(
6984	Elt: Args.MakeArgString(Str: Twine("-fcf-protection=") + A->getValue()));
6985
6986	if (Arg *SA = Args.getLastArg(Ids: options::OPT_mcf_branch_label_scheme_EQ))
6987	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-mcf-branch-label-scheme=") +
6988	SA->getValue()));
6989	} else if (Triple.isOSOpenBSD() && Triple.getArch() == llvm::Triple::x86_64) {
6990	// Emit IBT endbr64 instructions by default
6991	CmdArgs.push_back(Elt: "-fcf-protection=branch");
6992	// jump-table can generate indirect jumps, which are not permitted
6993	CmdArgs.push_back(Elt: "-fno-jump-tables");
6994	}
6995
6996	if (Arg *A = Args.getLastArg(Ids: options::OPT_mfunction_return_EQ))
6997	CmdArgs.push_back(
6998	Elt: Args.MakeArgString(Str: Twine("-mfunction-return=") + A->getValue()));
6999
7000	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mindirect_branch_cs_prefix);
7001
7002	// Forward -f options with positive and negative forms; we translate these by
7003	// hand. Do not propagate PGO options to the GPU-side compilations as the
7004	// profile info is for the host-side compilation only.
7005	if (!(IsCudaDevice || IsHIPDevice)) {
7006	if (Arg *A = getLastProfileSampleUseArg(Args)) {
7007	auto *PGOArg = Args.getLastArg(
7008	Ids: options::OPT_fprofile_generate, Ids: options::OPT_fprofile_generate_EQ,
7009	Ids: options::OPT_fcs_profile_generate,
7010	Ids: options::OPT_fcs_profile_generate_EQ, Ids: options::OPT_fprofile_use,
7011	Ids: options::OPT_fprofile_use_EQ);
7012	if (PGOArg)
7013	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
7014	<< "SampleUse with PGO options";
7015
7016	StringRef fname = A->getValue();
7017	if (!llvm::sys::fs::exists(Path: fname))
7018	D.Diag(DiagID: diag::err_drv_no_such_file) << fname;
7019	else
7020	A->render(Args, Output&: CmdArgs);
7021	}
7022	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fprofile_remapping_file_EQ);
7023
7024	if (Args.hasFlag(Pos: options::OPT_fpseudo_probe_for_profiling,
7025	Neg: options::OPT_fno_pseudo_probe_for_profiling, Default: false)) {
7026	CmdArgs.push_back(Elt: "-fpseudo-probe-for-profiling");
7027	// Enforce -funique-internal-linkage-names if it's not explicitly turned
7028	// off.
7029	if (Args.hasFlag(Pos: options::OPT_funique_internal_linkage_names,
7030	Neg: options::OPT_fno_unique_internal_linkage_names, Default: true))
7031	CmdArgs.push_back(Elt: "-funique-internal-linkage-names");
7032	}
7033	}
7034	RenderBuiltinOptions(TC, T: RawTriple, Args, CmdArgs);
7035
7036	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fassume_sane_operator_new,
7037	Neg: options::OPT_fno_assume_sane_operator_new);
7038
7039	if (Args.hasFlag(Pos: options::OPT_fapinotes, Neg: options::OPT_fno_apinotes, Default: false))
7040	CmdArgs.push_back(Elt: "-fapinotes");
7041	if (Args.hasFlag(Pos: options::OPT_fapinotes_modules,
7042	Neg: options::OPT_fno_apinotes_modules, Default: false))
7043	CmdArgs.push_back(Elt: "-fapinotes-modules");
7044	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fapinotes_swift_version);
7045
7046	if (Args.hasFlag(Pos: options::OPT_fswift_version_independent_apinotes,
7047	Neg: options::OPT_fno_swift_version_independent_apinotes, Default: false))
7048	CmdArgs.push_back(Elt: "-fswift-version-independent-apinotes");
7049
7050	// -fblocks=0 is default.
7051	if (Args.hasFlag(Pos: options::OPT_fblocks, Neg: options::OPT_fno_blocks,
7052	Default: TC.IsBlocksDefault()) ||
7053	(Args.hasArg(Ids: options::OPT_fgnu_runtime) &&
7054	Args.hasArg(Ids: options::OPT_fobjc_nonfragile_abi) &&
7055	!Args.hasArg(Ids: options::OPT_fno_blocks))) {
7056	CmdArgs.push_back(Elt: "-fblocks");
7057
7058	if (!Args.hasArg(Ids: options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
7059	CmdArgs.push_back(Elt: "-fblocks-runtime-optional");
7060	}
7061
7062	// -fencode-extended-block-signature=1 is default.
7063	if (TC.IsEncodeExtendedBlockSignatureDefault())
7064	CmdArgs.push_back(Elt: "-fencode-extended-block-signature");
7065
7066	if (Args.hasFlag(Pos: options::OPT_fcoro_aligned_allocation,
7067	Neg: options::OPT_fno_coro_aligned_allocation, Default: false) &&
7068	types::isCXX(Id: InputType))
7069	CmdArgs.push_back(Elt: "-fcoro-aligned-allocation");
7070
7071	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fdouble_square_bracket_attributes,
7072	Ids: options::OPT_fno_double_square_bracket_attributes);
7073
7074	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_faccess_control,
7075	Neg: options::OPT_fno_access_control);
7076	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_felide_constructors,
7077	Neg: options::OPT_fno_elide_constructors);
7078
7079	ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
7080
7081	if (KernelOrKext || (types::isCXX(Id: InputType) &&
7082	(RTTIMode == ToolChain::RM_Disabled)))
7083	CmdArgs.push_back(Elt: "-fno-rtti");
7084
7085	// -fshort-enums=0 is default for all architectures except Hexagon and z/OS.
7086	if (Args.hasFlag(Pos: options::OPT_fshort_enums, Neg: options::OPT_fno_short_enums,
7087	Default: TC.getArch() == llvm::Triple::hexagon || Triple.isOSzOS()))
7088	CmdArgs.push_back(Elt: "-fshort-enums");
7089
7090	RenderCharacterOptions(Args, T: AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
7091
7092	// -fuse-cxa-atexit is default.
7093	if (!Args.hasFlag(
7094	Pos: options::OPT_fuse_cxa_atexit, Neg: options::OPT_fno_use_cxa_atexit,
7095	Default: !RawTriple.isOSAIX() &&
7096	(!RawTriple.isOSWindows() ||
7097	RawTriple.isWindowsCygwinEnvironment()) &&
7098	((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
7099	RawTriple.hasEnvironment())) ||
7100	KernelOrKext)
7101	CmdArgs.push_back(Elt: "-fno-use-cxa-atexit");
7102
7103	if (Args.hasFlag(Pos: options::OPT_fregister_global_dtors_with_atexit,
7104	Neg: options::OPT_fno_register_global_dtors_with_atexit,
7105	Default: RawTriple.isOSDarwin() && !KernelOrKext))
7106	CmdArgs.push_back(Elt: "-fregister-global-dtors-with-atexit");
7107
7108	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fuse_line_directives,
7109	Neg: options::OPT_fno_use_line_directives);
7110
7111	// -fno-minimize-whitespace is default.
7112	if (Args.hasFlag(Pos: options::OPT_fminimize_whitespace,
7113	Neg: options::OPT_fno_minimize_whitespace, Default: false)) {
7114	types::ID InputType = Inputs[0].getType();
7115	if (!isDerivedFromC(Id: InputType))
7116	D.Diag(DiagID: diag::err_drv_opt_unsupported_input_type)
7117	<< "-fminimize-whitespace" << types::getTypeName(Id: InputType);
7118	CmdArgs.push_back(Elt: "-fminimize-whitespace");
7119	}
7120
7121	// -fno-keep-system-includes is default.
7122	if (Args.hasFlag(Pos: options::OPT_fkeep_system_includes,
7123	Neg: options::OPT_fno_keep_system_includes, Default: false)) {
7124	types::ID InputType = Inputs[0].getType();
7125	if (!isDerivedFromC(Id: InputType))
7126	D.Diag(DiagID: diag::err_drv_opt_unsupported_input_type)
7127	<< "-fkeep-system-includes" << types::getTypeName(Id: InputType);
7128	CmdArgs.push_back(Elt: "-fkeep-system-includes");
7129	}
7130
7131	// -fms-extensions=0 is default.
7132	if (Args.hasFlag(Pos: options::OPT_fms_extensions, Neg: options::OPT_fno_ms_extensions,
7133	Default: IsWindowsMSVC || IsUEFI))
7134	CmdArgs.push_back(Elt: "-fms-extensions");
7135
7136	// -fms-compatibility=0 is default.
7137	bool IsMSVCCompat = Args.hasFlag(
7138	Pos: options::OPT_fms_compatibility, Neg: options::OPT_fno_ms_compatibility,
7139	Default: (IsWindowsMSVC && Args.hasFlag(Pos: options::OPT_fms_extensions,
7140	Neg: options::OPT_fno_ms_extensions, Default: true)));
7141	if (IsMSVCCompat) {
7142	CmdArgs.push_back(Elt: "-fms-compatibility");
7143	if (!types::isCXX(Id: Input.getType()) &&
7144	Args.hasArg(Ids: options::OPT_fms_define_stdc))
7145	CmdArgs.push_back(Elt: "-fms-define-stdc");
7146	}
7147
7148	if (Triple.isWindowsMSVCEnvironment() && !D.IsCLMode() &&
7149	Args.hasArg(Ids: options::OPT_fms_runtime_lib_EQ))
7150	ProcessVSRuntimeLibrary(TC: getToolChain(), Args, CmdArgs);
7151
7152	// Handle -fgcc-version, if present.
7153	VersionTuple GNUCVer;
7154	if (Arg *A = Args.getLastArg(Ids: options::OPT_fgnuc_version_EQ)) {
7155	// Check that the version has 1 to 3 components and the minor and patch
7156	// versions fit in two decimal digits.
7157	StringRef Val = A->getValue();
7158	Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.
7159	bool Invalid = GNUCVer.tryParse(string: Val);
7160	unsigned Minor = GNUCVer.getMinor().value_or(u: 0);
7161	unsigned Patch = GNUCVer.getSubminor().value_or(u: 0);
7162	if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
7163	D.Diag(DiagID: diag::err_drv_invalid_value)
7164	<< A->getAsString(Args) << A->getValue();
7165	}
7166	} else if (!IsMSVCCompat) {
7167	// Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.
7168	GNUCVer = VersionTuple(4, 2, 1);
7169	}
7170	if (!GNUCVer.empty()) {
7171	CmdArgs.push_back(
7172	Elt: Args.MakeArgString(Str: "-fgnuc-version=" + GNUCVer.getAsString()));
7173	}
7174
7175	VersionTuple MSVT = TC.computeMSVCVersion(D: &D, Args);
7176	if (!MSVT.empty())
7177	CmdArgs.push_back(
7178	Elt: Args.MakeArgString(Str: "-fms-compatibility-version=" + MSVT.getAsString()));
7179
7180	bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
7181	if (ImplyVCPPCVer) {
7182	StringRef LanguageStandard;
7183	if (const Arg *StdArg = Args.getLastArg(Ids: options::OPT__SLASH_std)) {
7184	Std = StdArg;
7185	LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
7186	.Case(S: "c11", Value: "-std=c11")
7187	.Case(S: "c17", Value: "-std=c17")
7188	// TODO: add c23 when MSVC supports it.
7189	.Case(S: "clatest", Value: "-std=c23")
7190	.Default(Value: "");
7191	if (LanguageStandard.empty())
7192	D.Diag(DiagID: clang::diag::warn_drv_unused_argument)
7193	<< StdArg->getAsString(Args);
7194	}
7195	CmdArgs.push_back(Elt: LanguageStandard.data());
7196	}
7197	if (ImplyVCPPCXXVer) {
7198	StringRef LanguageStandard;
7199	if (const Arg *StdArg = Args.getLastArg(Ids: options::OPT__SLASH_std)) {
7200	Std = StdArg;
7201	LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
7202	.Case(S: "c++14", Value: "-std=c++14")
7203	.Case(S: "c++17", Value: "-std=c++17")
7204	.Case(S: "c++20", Value: "-std=c++20")
7205	// TODO add c++23 and c++26 when MSVC supports it.
7206	.Case(S: "c++23preview", Value: "-std=c++23")
7207	.Case(S: "c++latest", Value: "-std=c++26")
7208	.Default(Value: "");
7209	if (LanguageStandard.empty())
7210	D.Diag(DiagID: clang::diag::warn_drv_unused_argument)
7211	<< StdArg->getAsString(Args);
7212	}
7213
7214	if (LanguageStandard.empty()) {
7215	if (IsMSVC2015Compatible)
7216	LanguageStandard = "-std=c++14";
7217	else
7218	LanguageStandard = "-std=c++11";
7219	}
7220
7221	CmdArgs.push_back(Elt: LanguageStandard.data());
7222	}
7223
7224	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fborland_extensions,
7225	Neg: options::OPT_fno_borland_extensions);
7226
7227	// -fno-declspec is default, except for PS4/PS5.
7228	if (Args.hasFlag(Pos: options::OPT_fdeclspec, Neg: options::OPT_fno_declspec,
7229	Default: RawTriple.isPS()))
7230	CmdArgs.push_back(Elt: "-fdeclspec");
7231	else if (Args.hasArg(Ids: options::OPT_fno_declspec))
7232	CmdArgs.push_back(Elt: "-fno-declspec"); // Explicitly disabling __declspec.
7233
7234	// -fthreadsafe-static is default, except for MSVC compatibility versions less
7235	// than 19.
7236	if (!Args.hasFlag(Pos: options::OPT_fthreadsafe_statics,
7237	Neg: options::OPT_fno_threadsafe_statics,
7238	Default: !types::isOpenCL(Id: InputType) &&
7239	(!IsWindowsMSVC || IsMSVC2015Compatible)))
7240	CmdArgs.push_back(Elt: "-fno-threadsafe-statics");
7241
7242	if (!Args.hasFlag(Pos: options::OPT_fms_tls_guards, Neg: options::OPT_fno_ms_tls_guards,
7243	Default: true))
7244	CmdArgs.push_back(Elt: "-fno-ms-tls-guards");
7245
7246	// Add -fno-assumptions, if it was specified.
7247	if (!Args.hasFlag(Pos: options::OPT_fassumptions, Neg: options::OPT_fno_assumptions,
7248	Default: true))
7249	CmdArgs.push_back(Elt: "-fno-assumptions");
7250
7251	// -fgnu-keywords default varies depending on language; only pass if
7252	// specified.
7253	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fgnu_keywords,
7254	Ids: options::OPT_fno_gnu_keywords);
7255
7256	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fgnu89_inline,
7257	Neg: options::OPT_fno_gnu89_inline);
7258
7259	const Arg *InlineArg = Args.getLastArg(Ids: options::OPT_finline_functions,
7260	Ids: options::OPT_finline_hint_functions,
7261	Ids: options::OPT_fno_inline_functions);
7262	if (Arg *A = Args.getLastArg(Ids: options::OPT_finline, Ids: options::OPT_fno_inline)) {
7263	if (A->getOption().matches(ID: options::OPT_fno_inline))
7264	A->render(Args, Output&: CmdArgs);
7265	} else if (InlineArg) {
7266	InlineArg->render(Args, Output&: CmdArgs);
7267	}
7268
7269	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_finline_max_stacksize_EQ);
7270
7271	// FIXME: Find a better way to determine whether we are in C++20.
7272	bool HaveCxx20 =
7273	Std &&
7274	(Std->containsValue(Value: "c++2a") || Std->containsValue(Value: "gnu++2a") ||
7275	Std->containsValue(Value: "c++20") || Std->containsValue(Value: "gnu++20") ||
7276	Std->containsValue(Value: "c++2b") || Std->containsValue(Value: "gnu++2b") ||
7277	Std->containsValue(Value: "c++23") || Std->containsValue(Value: "gnu++23") ||
7278	Std->containsValue(Value: "c++2c") || Std->containsValue(Value: "gnu++2c") ||
7279	Std->containsValue(Value: "c++26") || Std->containsValue(Value: "gnu++26") ||
7280	Std->containsValue(Value: "c++latest") || Std->containsValue(Value: "gnu++latest"));
7281	bool HaveModules =
7282	RenderModulesOptions(C, D, Args, Input, Output, HaveStd20: HaveCxx20, CmdArgs);
7283
7284	// -fdelayed-template-parsing is default when targeting MSVC.
7285	// Many old Windows SDK versions require this to parse.
7286	//
7287	// According to
7288	// https://learn.microsoft.com/en-us/cpp/build/reference/permissive-standards-conformance?view=msvc-170,
7289	// MSVC actually defaults to -fno-delayed-template-parsing (/Zc:twoPhase-
7290	// with MSVC CLI) if using C++20. So we match the behavior with MSVC here to
7291	// not enable -fdelayed-template-parsing by default after C++20.
7292	//
7293	// FIXME: Given -fdelayed-template-parsing is a source of bugs, we should be
7294	// able to disable this by default at some point.
7295	if (Args.hasFlag(Pos: options::OPT_fdelayed_template_parsing,
7296	Neg: options::OPT_fno_delayed_template_parsing,
7297	Default: IsWindowsMSVC && !HaveCxx20)) {
7298	if (HaveCxx20)
7299	D.Diag(DiagID: clang::diag::warn_drv_delayed_template_parsing_after_cxx20);
7300
7301	CmdArgs.push_back(Elt: "-fdelayed-template-parsing");
7302	}
7303
7304	if (Args.hasFlag(Pos: options::OPT_fpch_validate_input_files_content,
7305	Neg: options::OPT_fno_pch_validate_input_files_content, Default: false))
7306	CmdArgs.push_back(Elt: "-fvalidate-ast-input-files-content");
7307	if (Args.hasFlag(Pos: options::OPT_fpch_instantiate_templates,
7308	Neg: options::OPT_fno_pch_instantiate_templates, Default: false))
7309	CmdArgs.push_back(Elt: "-fpch-instantiate-templates");
7310	if (Args.hasFlag(Pos: options::OPT_fpch_codegen, Neg: options::OPT_fno_pch_codegen,
7311	Default: false))
7312	CmdArgs.push_back(Elt: "-fmodules-codegen");
7313	if (Args.hasFlag(Pos: options::OPT_fpch_debuginfo, Neg: options::OPT_fno_pch_debuginfo,
7314	Default: false))
7315	CmdArgs.push_back(Elt: "-fmodules-debuginfo");
7316
7317	ObjCRuntime Runtime = AddObjCRuntimeArgs(args: Args, inputs: Inputs, cmdArgs&: CmdArgs, rewrite: rewriteKind);
7318	RenderObjCOptions(TC, D, T: RawTriple, Args, Runtime, InferCovariantReturns: rewriteKind != RK_None,
7319	Input, CmdArgs);
7320
7321	if (types::isObjC(Id: Input.getType()) &&
7322	Args.hasFlag(Pos: options::OPT_fobjc_encode_cxx_class_template_spec,
7323	Neg: options::OPT_fno_objc_encode_cxx_class_template_spec,
7324	Default: !Runtime.isNeXTFamily()))
7325	CmdArgs.push_back(Elt: "-fobjc-encode-cxx-class-template-spec");
7326
7327	if (Args.hasFlag(Pos: options::OPT_fapplication_extension,
7328	Neg: options::OPT_fno_application_extension, Default: false))
7329	CmdArgs.push_back(Elt: "-fapplication-extension");
7330
7331	// Handle GCC-style exception args.
7332	bool EH = false;
7333	if (!C.getDriver().IsCLMode())
7334	EH = addExceptionArgs(Args, InputType, TC, KernelOrKext, objcRuntime: Runtime, CmdArgs);
7335
7336	// Handle exception personalities
7337	Arg *A = Args.getLastArg(
7338	Ids: options::OPT_fsjlj_exceptions, Ids: options::OPT_fseh_exceptions,
7339	Ids: options::OPT_fdwarf_exceptions, Ids: options::OPT_fwasm_exceptions);
7340	if (A) {
7341	const Option &Opt = A->getOption();
7342	if (Opt.matches(ID: options::OPT_fsjlj_exceptions))
7343	CmdArgs.push_back(Elt: "-exception-model=sjlj");
7344	if (Opt.matches(ID: options::OPT_fseh_exceptions))
7345	CmdArgs.push_back(Elt: "-exception-model=seh");
7346	if (Opt.matches(ID: options::OPT_fdwarf_exceptions))
7347	CmdArgs.push_back(Elt: "-exception-model=dwarf");
7348	if (Opt.matches(ID: options::OPT_fwasm_exceptions))
7349	CmdArgs.push_back(Elt: "-exception-model=wasm");
7350	} else {
7351	switch (TC.GetExceptionModel(Args)) {
7352	default:
7353	break;
7354	case llvm::ExceptionHandling::DwarfCFI:
7355	CmdArgs.push_back(Elt: "-exception-model=dwarf");
7356	break;
7357	case llvm::ExceptionHandling::SjLj:
7358	CmdArgs.push_back(Elt: "-exception-model=sjlj");
7359	break;
7360	case llvm::ExceptionHandling::WinEH:
7361	CmdArgs.push_back(Elt: "-exception-model=seh");
7362	break;
7363	}
7364	}
7365
7366	// Unwind v2 (epilog) information for x64 Windows.
7367	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_winx64_eh_unwindv2);
7368
7369	// C++ "sane" operator new.
7370	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fassume_sane_operator_new,
7371	Neg: options::OPT_fno_assume_sane_operator_new);
7372
7373	// -fassume-unique-vtables is on by default.
7374	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fassume_unique_vtables,
7375	Neg: options::OPT_fno_assume_unique_vtables);
7376
7377	// -fsized-deallocation is on by default in C++14 onwards and otherwise off
7378	// by default.
7379	Args.addLastArg(Output&: CmdArgs, Ids: options::OPT_fsized_deallocation,
7380	Ids: options::OPT_fno_sized_deallocation);
7381
7382	// -faligned-allocation is on by default in C++17 onwards and otherwise off
7383	// by default.
7384	if (Arg *A = Args.getLastArg(Ids: options::OPT_faligned_allocation,
7385	Ids: options::OPT_fno_aligned_allocation,
7386	Ids: options::OPT_faligned_new_EQ)) {
7387	if (A->getOption().matches(ID: options::OPT_fno_aligned_allocation))
7388	CmdArgs.push_back(Elt: "-fno-aligned-allocation");
7389	else
7390	CmdArgs.push_back(Elt: "-faligned-allocation");
7391	}
7392
7393	// The default new alignment can be specified using a dedicated option or via
7394	// a GCC-compatible option that also turns on aligned allocation.
7395	if (Arg *A = Args.getLastArg(Ids: options::OPT_fnew_alignment_EQ,
7396	Ids: options::OPT_faligned_new_EQ))
7397	CmdArgs.push_back(
7398	Elt: Args.MakeArgString(Str: Twine("-fnew-alignment=") + A->getValue()));
7399
7400	// -fconstant-cfstrings is default, and may be subject to argument translation
7401	// on Darwin.
7402	if (!Args.hasFlag(Pos: options::OPT_fconstant_cfstrings,
7403	Neg: options::OPT_fno_constant_cfstrings, Default: true) ||
7404	!Args.hasFlag(Pos: options::OPT_mconstant_cfstrings,
7405	Neg: options::OPT_mno_constant_cfstrings, Default: true))
7406	CmdArgs.push_back(Elt: "-fno-constant-cfstrings");
7407
7408	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fpascal_strings,
7409	Neg: options::OPT_fno_pascal_strings);
7410
7411	// Honor -fpack-struct= and -fpack-struct, if given. Note that
7412	// -fno-pack-struct doesn't apply to -fpack-struct=.
7413	if (Arg *A = Args.getLastArg(Ids: options::OPT_fpack_struct_EQ)) {
7414	std::string PackStructStr = "-fpack-struct=";
7415	PackStructStr += A->getValue();
7416	CmdArgs.push_back(Elt: Args.MakeArgString(Str: PackStructStr));
7417	} else if (Args.hasFlag(Pos: options::OPT_fpack_struct,
7418	Neg: options::OPT_fno_pack_struct, Default: false)) {
7419	CmdArgs.push_back(Elt: "-fpack-struct=1");
7420	}
7421
7422	// Handle -fmax-type-align=N and -fno-type-align
7423	bool SkipMaxTypeAlign = Args.hasArg(Ids: options::OPT_fno_max_type_align);
7424	if (Arg *A = Args.getLastArg(Ids: options::OPT_fmax_type_align_EQ)) {
7425	if (!SkipMaxTypeAlign) {
7426	std::string MaxTypeAlignStr = "-fmax-type-align=";
7427	MaxTypeAlignStr += A->getValue();
7428	CmdArgs.push_back(Elt: Args.MakeArgString(Str: MaxTypeAlignStr));
7429	}
7430	} else if (RawTriple.isOSDarwin()) {
7431	if (!SkipMaxTypeAlign) {
7432	std::string MaxTypeAlignStr = "-fmax-type-align=16";
7433	CmdArgs.push_back(Elt: Args.MakeArgString(Str: MaxTypeAlignStr));
7434	}
7435	}
7436
7437	if (!Args.hasFlag(Pos: options::OPT_Qy, Neg: options::OPT_Qn, Default: true))
7438	CmdArgs.push_back(Elt: "-Qn");
7439
7440	// -fno-common is the default, set -fcommon only when that flag is set.
7441	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fcommon, Neg: options::OPT_fno_common);
7442
7443	// -fsigned-bitfields is default, and clang doesn't yet support
7444	// -funsigned-bitfields.
7445	if (!Args.hasFlag(Pos: options::OPT_fsigned_bitfields,
7446	Neg: options::OPT_funsigned_bitfields, Default: true))
7447	D.Diag(DiagID: diag::warn_drv_clang_unsupported)
7448	<< Args.getLastArg(Ids: options::OPT_funsigned_bitfields)->getAsString(Args);
7449
7450	// -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
7451	if (!Args.hasFlag(Pos: options::OPT_ffor_scope, Neg: options::OPT_fno_for_scope, Default: true))
7452	D.Diag(DiagID: diag::err_drv_clang_unsupported)
7453	<< Args.getLastArg(Ids: options::OPT_fno_for_scope)->getAsString(Args);
7454
7455	// -finput_charset=UTF-8 is default. Reject others
7456	if (Arg *inputCharset = Args.getLastArg(Ids: options::OPT_finput_charset_EQ)) {
7457	StringRef value = inputCharset->getValue();
7458	if (!value.equals_insensitive(RHS: "utf-8"))
7459	D.Diag(DiagID: diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
7460	<< value;
7461	}
7462
7463	// -fexec_charset=UTF-8 is default. Reject others
7464	if (Arg *execCharset = Args.getLastArg(Ids: options::OPT_fexec_charset_EQ)) {
7465	StringRef value = execCharset->getValue();
7466	if (!value.equals_insensitive(RHS: "utf-8"))
7467	D.Diag(DiagID: diag::err_drv_invalid_value) << execCharset->getAsString(Args)
7468	<< value;
7469	}
7470
7471	RenderDiagnosticsOptions(D, Args, CmdArgs);
7472
7473	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fasm_blocks,
7474	Neg: options::OPT_fno_asm_blocks);
7475
7476	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_fgnu_inline_asm,
7477	Neg: options::OPT_fno_gnu_inline_asm);
7478
7479	handleVectorizeLoopsArgs(Args, CmdArgs);
7480	handleVectorizeSLPArgs(Args, CmdArgs);
7481
7482	StringRef VecWidth = parseMPreferVectorWidthOption(Diags&: D.getDiags(), Args);
7483	if (!VecWidth.empty())
7484	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mprefer-vector-width=" + VecWidth));
7485
7486	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fshow_overloads_EQ);
7487	Args.AddLastArg(Output&: CmdArgs,
7488	Ids: options::OPT_fsanitize_undefined_strip_path_components_EQ);
7489
7490	// -fdollars-in-identifiers default varies depending on platform and
7491	// language; only pass if specified.
7492	if (Arg *A = Args.getLastArg(Ids: options::OPT_fdollars_in_identifiers,
7493	Ids: options::OPT_fno_dollars_in_identifiers)) {
7494	if (A->getOption().matches(ID: options::OPT_fdollars_in_identifiers))
7495	CmdArgs.push_back(Elt: "-fdollars-in-identifiers");
7496	else
7497	CmdArgs.push_back(Elt: "-fno-dollars-in-identifiers");
7498	}
7499
7500	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fapple_pragma_pack,
7501	Neg: options::OPT_fno_apple_pragma_pack);
7502
7503	// Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
7504	if (willEmitRemarks(Args) && checkRemarksOptions(D, Args, Triple))
7505	renderRemarksOptions(Args, CmdArgs, Triple, Input, Output, JA);
7506
7507	bool RewriteImports = Args.hasFlag(Pos: options::OPT_frewrite_imports,
7508	Neg: options::OPT_fno_rewrite_imports, Default: false);
7509	if (RewriteImports)
7510	CmdArgs.push_back(Elt: "-frewrite-imports");
7511
7512	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fdirectives_only,
7513	Neg: options::OPT_fno_directives_only);
7514
7515	// Enable rewrite includes if the user's asked for it or if we're generating
7516	// diagnostics.
7517	// TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
7518	// nice to enable this when doing a crashdump for modules as well.
7519	if (Args.hasFlag(Pos: options::OPT_frewrite_includes,
7520	Neg: options::OPT_fno_rewrite_includes, Default: false) ||
7521	(C.isForDiagnostics() && !HaveModules))
7522	CmdArgs.push_back(Elt: "-frewrite-includes");
7523
7524	if (Args.hasFlag(Pos: options::OPT_fzos_extensions,
7525	Neg: options::OPT_fno_zos_extensions, Default: false))
7526	CmdArgs.push_back(Elt: "-fzos-extensions");
7527	else if (Args.hasArg(Ids: options::OPT_fno_zos_extensions))
7528	CmdArgs.push_back(Elt: "-fno-zos-extensions");
7529
7530	// Only allow -traditional or -traditional-cpp outside in preprocessing modes.
7531	if (Arg *A = Args.getLastArg(Ids: options::OPT_traditional,
7532	Ids: options::OPT_traditional_cpp)) {
7533	if (isa<PreprocessJobAction>(Val: JA))
7534	CmdArgs.push_back(Elt: "-traditional-cpp");
7535	else
7536	D.Diag(DiagID: diag::err_drv_clang_unsupported) << A->getAsString(Args);
7537	}
7538
7539	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_dM);
7540	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_dD);
7541	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_dI);
7542
7543	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fmax_tokens_EQ);
7544
7545	// Handle serialized diagnostics.
7546	if (Arg *A = Args.getLastArg(Ids: options::OPT__serialize_diags)) {
7547	CmdArgs.push_back(Elt: "-serialize-diagnostic-file");
7548	CmdArgs.push_back(Elt: Args.MakeArgString(Str: A->getValue()));
7549	}
7550
7551	if (Args.hasArg(Ids: options::OPT_fretain_comments_from_system_headers))
7552	CmdArgs.push_back(Elt: "-fretain-comments-from-system-headers");
7553
7554	if (Arg *A = Args.getLastArg(Ids: options::OPT_fextend_variable_liveness_EQ)) {
7555	A->render(Args, Output&: CmdArgs);
7556	} else if (Arg *A = Args.getLastArg(Ids: options::OPT_O_Group);
7557	A && A->containsValue(Value: "g")) {
7558	// Set -fextend-variable-liveness=all by default at -Og.
7559	CmdArgs.push_back(Elt: "-fextend-variable-liveness=all");
7560	}
7561
7562	// Forward -fcomment-block-commands to -cc1.
7563	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fcomment_block_commands);
7564	// Forward -fparse-all-comments to -cc1.
7565	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_fparse_all_comments);
7566
7567	// Turn -fplugin=name.so into -load name.so
7568	for (const Arg *A : Args.filtered(Ids: options::OPT_fplugin_EQ)) {
7569	CmdArgs.push_back(Elt: "-load");
7570	CmdArgs.push_back(Elt: A->getValue());
7571	A->claim();
7572	}
7573
7574	// Turn -fplugin-arg-pluginname-key=value into
7575	// -plugin-arg-pluginname key=value
7576	// GCC has an actual plugin_argument struct with key/value pairs that it
7577	// passes to its plugins, but we don't, so just pass it on as-is.
7578	//
7579	// The syntax for -fplugin-arg- is ambiguous if both plugin name and
7580	// argument key are allowed to contain dashes. GCC therefore only
7581	// allows dashes in the key. We do the same.
7582	for (const Arg *A : Args.filtered(Ids: options::OPT_fplugin_arg)) {
7583	auto ArgValue = StringRef(A->getValue());
7584	auto FirstDashIndex = ArgValue.find(C: '-');
7585	StringRef PluginName = ArgValue.substr(Start: 0, N: FirstDashIndex);
7586	StringRef Arg = ArgValue.substr(Start: FirstDashIndex + 1);
7587
7588	A->claim();
7589	if (FirstDashIndex == StringRef::npos || Arg.empty()) {
7590	if (PluginName.empty()) {
7591	D.Diag(DiagID: diag::warn_drv_missing_plugin_name) << A->getAsString(Args);
7592	} else {
7593	D.Diag(DiagID: diag::warn_drv_missing_plugin_arg)
7594	<< PluginName << A->getAsString(Args);
7595	}
7596	continue;
7597	}
7598
7599	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-plugin-arg-") + PluginName));
7600	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Arg));
7601	}
7602
7603	// Forward -fpass-plugin=name.so to -cc1.
7604	for (const Arg *A : Args.filtered(Ids: options::OPT_fpass_plugin_EQ)) {
7605	CmdArgs.push_back(
7606	Elt: Args.MakeArgString(Str: Twine("-fpass-plugin=") + A->getValue()));
7607	A->claim();
7608	}
7609
7610	// Forward --vfsoverlay to -cc1.
7611	for (const Arg *A : Args.filtered(Ids: options::OPT_vfsoverlay)) {
7612	CmdArgs.push_back(Elt: "--vfsoverlay");
7613	CmdArgs.push_back(Elt: A->getValue());
7614	A->claim();
7615	}
7616
7617	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fsafe_buffer_usage_suggestions,
7618	Neg: options::OPT_fno_safe_buffer_usage_suggestions);
7619
7620	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fexperimental_late_parse_attributes,
7621	Neg: options::OPT_fno_experimental_late_parse_attributes);
7622
7623	if (Args.hasFlag(Pos: options::OPT_funique_source_file_names,
7624	Neg: options::OPT_fno_unique_source_file_names, Default: false)) {
7625	if (Arg *A = Args.getLastArg(Ids: options::OPT_unique_source_file_identifier_EQ))
7626	A->render(Args, Output&: CmdArgs);
7627	else
7628	CmdArgs.push_back(Elt: Args.MakeArgString(
7629	Str: Twine("-funique-source-file-identifier=") + Input.getBaseInput()));
7630	}
7631
7632	// Setup statistics file output.
7633	SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
7634	if (!StatsFile.empty()) {
7635	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-stats-file=") + StatsFile));
7636	if (D.CCPrintInternalStats)
7637	CmdArgs.push_back(Elt: "-stats-file-append");
7638	}
7639
7640	// Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
7641	// parser.
7642	for (auto Arg : Args.filtered(Ids: options::OPT_Xclang)) {
7643	Arg->claim();
7644	// -finclude-default-header flag is for preprocessor,
7645	// do not pass it to other cc1 commands when save-temps is enabled
7646	if (C.getDriver().isSaveTempsEnabled() &&
7647	!isa<PreprocessJobAction>(Val: JA)) {
7648	if (StringRef(Arg->getValue()) == "-finclude-default-header")
7649	continue;
7650	}
7651	CmdArgs.push_back(Elt: Arg->getValue());
7652	}
7653	for (const Arg *A : Args.filtered(Ids: options::OPT_mllvm)) {
7654	A->claim();
7655
7656	// We translate this by hand to the -cc1 argument, since nightly test uses
7657	// it and developers have been trained to spell it with -mllvm. Both
7658	// spellings are now deprecated and should be removed.
7659	if (StringRef(A->getValue(N: 0)) == "-disable-llvm-optzns") {
7660	CmdArgs.push_back(Elt: "-disable-llvm-optzns");
7661	} else {
7662	A->render(Args, Output&: CmdArgs);
7663	}
7664	}
7665
7666	// This needs to run after -Xclang argument forwarding to pick up the target
7667	// features enabled through -Xclang -target-feature flags.
7668	SanitizeArgs.addArgs(TC, Args, CmdArgs, InputType);
7669
7670	#if CLANG_ENABLE_CIR
7671	// Forward -mmlir arguments to to the MLIR option parser.
7672	for (const Arg *A : Args.filtered(options::OPT_mmlir)) {
7673	A->claim();
7674	A->render(Args, CmdArgs);
7675	}
7676	#endif // CLANG_ENABLE_CIR
7677
7678	// With -save-temps, we want to save the unoptimized bitcode output from the
7679	// CompileJobAction, use -disable-llvm-passes to get pristine IR generated
7680	// by the frontend.
7681	// When -fembed-bitcode is enabled, optimized bitcode is emitted because it
7682	// has slightly different breakdown between stages.
7683	// FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
7684	// pristine IR generated by the frontend. Ideally, a new compile action should
7685	// be added so both IR can be captured.
7686	if ((C.getDriver().isSaveTempsEnabled() ||
7687	JA.isHostOffloading(OKind: Action::OFK_OpenMP)) &&
7688	!(C.getDriver().embedBitcodeInObject() && !IsUsingLTO) &&
7689	isa<CompileJobAction>(Val: JA))
7690	CmdArgs.push_back(Elt: "-disable-llvm-passes");
7691
7692	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_undef);
7693
7694	const char *Exec = D.getClangProgramPath();
7695
7696	// Optionally embed the -cc1 level arguments into the debug info or a
7697	// section, for build analysis.
7698	// Also record command line arguments into the debug info if
7699	// -grecord-gcc-switches options is set on.
7700	// By default, -gno-record-gcc-switches is set on and no recording.
7701	auto GRecordSwitches = false;
7702	auto FRecordSwitches = false;
7703	if (shouldRecordCommandLine(TC, Args, FRecordCommandLine&: FRecordSwitches, GRecordCommandLine&: GRecordSwitches)) {
7704	auto FlagsArgString = renderEscapedCommandLine(TC, Args);
7705	if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
7706	CmdArgs.push_back(Elt: "-dwarf-debug-flags");
7707	CmdArgs.push_back(Elt: FlagsArgString);
7708	}
7709	if (FRecordSwitches) {
7710	CmdArgs.push_back(Elt: "-record-command-line");
7711	CmdArgs.push_back(Elt: FlagsArgString);
7712	}
7713	}
7714
7715	// Host-side offloading compilation receives all device-side outputs. Include
7716	// them in the host compilation depending on the target. If the host inputs
7717	// are not empty we use the new-driver scheme, otherwise use the old scheme.
7718	if ((IsCuda || IsHIP) && CudaDeviceInput) {
7719	CmdArgs.push_back(Elt: "-fcuda-include-gpubinary");
7720	CmdArgs.push_back(Elt: CudaDeviceInput->getFilename());
7721	} else if (!HostOffloadingInputs.empty()) {
7722	if (IsCuda && !IsRDCMode) {
7723	assert(HostOffloadingInputs.size() == 1 && "Only one input expected");
7724	CmdArgs.push_back(Elt: "-fcuda-include-gpubinary");
7725	CmdArgs.push_back(Elt: HostOffloadingInputs.front().getFilename());
7726	} else {
7727	for (const InputInfo Input : HostOffloadingInputs)
7728	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fembed-offload-object=" +
7729	TC.getInputFilename(Input)));
7730	}
7731	}
7732
7733	if (IsCuda) {
7734	if (Args.hasFlag(Pos: options::OPT_fcuda_short_ptr,
7735	Neg: options::OPT_fno_cuda_short_ptr, Default: false))
7736	CmdArgs.push_back(Elt: "-fcuda-short-ptr");
7737	}
7738
7739	if (IsCuda || IsHIP) {
7740	// Determine the original source input.
7741	const Action *SourceAction = &JA;
7742	while (SourceAction->getKind() != Action::InputClass) {
7743	assert(!SourceAction->getInputs().empty() && "unexpected root action!");
7744	SourceAction = SourceAction->getInputs()[0];
7745	}
7746	auto CUID = cast<InputAction>(Val: SourceAction)->getId();
7747	if (!CUID.empty())
7748	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-cuid=") + Twine(CUID)));
7749
7750	// -ffast-math turns on -fgpu-approx-transcendentals implicitly, but will
7751	// be overriden by -fno-gpu-approx-transcendentals.
7752	bool UseApproxTranscendentals = Args.hasFlag(
7753	Pos: options::OPT_ffast_math, Neg: options::OPT_fno_fast_math, Default: false);
7754	if (Args.hasFlag(Pos: options::OPT_fgpu_approx_transcendentals,
7755	Neg: options::OPT_fno_gpu_approx_transcendentals,
7756	Default: UseApproxTranscendentals))
7757	CmdArgs.push_back(Elt: "-fgpu-approx-transcendentals");
7758	} else {
7759	Args.claimAllArgs(Ids: options::OPT_fgpu_approx_transcendentals,
7760	Ids: options::OPT_fno_gpu_approx_transcendentals);
7761	}
7762
7763	if (IsHIP) {
7764	CmdArgs.push_back(Elt: "-fcuda-allow-variadic-functions");
7765	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_fgpu_default_stream_EQ);
7766	}
7767
7768	Args.AddAllArgs(Output&: CmdArgs,
7769	Id0: options::OPT_fsanitize_undefined_ignore_overflow_pattern_EQ);
7770
7771	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_foffload_uniform_block,
7772	Ids: options::OPT_fno_offload_uniform_block);
7773
7774	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_foffload_implicit_host_device_templates,
7775	Ids: options::OPT_fno_offload_implicit_host_device_templates);
7776
7777	if (IsCudaDevice || IsHIPDevice) {
7778	StringRef InlineThresh =
7779	Args.getLastArgValue(Id: options::OPT_fgpu_inline_threshold_EQ);
7780	if (!InlineThresh.empty()) {
7781	std::string ArgStr =
7782	std::string("-inline-threshold=") + InlineThresh.str();
7783	CmdArgs.append(IL: {"-mllvm", Args.MakeArgStringRef(Str: ArgStr)});
7784	}
7785	}
7786
7787	if (IsHIPDevice)
7788	Args.addOptOutFlag(Output&: CmdArgs,
7789	Pos: options::OPT_fhip_fp32_correctly_rounded_divide_sqrt,
7790	Neg: options::OPT_fno_hip_fp32_correctly_rounded_divide_sqrt);
7791
7792	// OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
7793	// to specify the result of the compile phase on the host, so the meaningful
7794	// device declarations can be identified. Also, -fopenmp-is-target-device is
7795	// passed along to tell the frontend that it is generating code for a device,
7796	// so that only the relevant declarations are emitted.
7797	if (IsOpenMPDevice) {
7798	CmdArgs.push_back(Elt: "-fopenmp-is-target-device");
7799	// If we are offloading cuda/hip via llvm, it's also "cuda device code".
7800	if (Args.hasArg(Ids: options::OPT_foffload_via_llvm))
7801	CmdArgs.push_back(Elt: "-fcuda-is-device");
7802
7803	if (OpenMPDeviceInput) {
7804	CmdArgs.push_back(Elt: "-fopenmp-host-ir-file-path");
7805	CmdArgs.push_back(Elt: Args.MakeArgString(Str: OpenMPDeviceInput->getFilename()));
7806	}
7807	}
7808
7809	if (Triple.isAMDGPU()) {
7810	handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs);
7811
7812	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_munsafe_fp_atomics,
7813	Neg: options::OPT_mno_unsafe_fp_atomics);
7814	Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_mamdgpu_ieee,
7815	Neg: options::OPT_mno_amdgpu_ieee);
7816	}
7817
7818	addOpenMPHostOffloadingArgs(C, JA, Args, CmdArgs);
7819
7820	bool VirtualFunctionElimination =
7821	Args.hasFlag(Pos: options::OPT_fvirtual_function_elimination,
7822	Neg: options::OPT_fno_virtual_function_elimination, Default: false);
7823	if (VirtualFunctionElimination) {
7824	// VFE requires full LTO (currently, this might be relaxed to allow ThinLTO
7825	// in the future).
7826	if (LTOMode != LTOK_Full)
7827	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
7828	<< "-fvirtual-function-elimination"
7829	<< "-flto=full";
7830
7831	CmdArgs.push_back(Elt: "-fvirtual-function-elimination");
7832	}
7833
7834	// VFE requires whole-program-vtables, and enables it by default.
7835	bool WholeProgramVTables = Args.hasFlag(
7836	Pos: options::OPT_fwhole_program_vtables,
7837	Neg: options::OPT_fno_whole_program_vtables, Default: VirtualFunctionElimination);
7838	if (VirtualFunctionElimination && !WholeProgramVTables) {
7839	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
7840	<< "-fno-whole-program-vtables"
7841	<< "-fvirtual-function-elimination";
7842	}
7843
7844	if (WholeProgramVTables) {
7845	// PS4 uses the legacy LTO API, which does not support this feature in
7846	// ThinLTO mode.
7847	bool IsPS4 = getToolChain().getTriple().isPS4();
7848
7849	// Check if we passed LTO options but they were suppressed because this is a
7850	// device offloading action, or we passed device offload LTO options which
7851	// were suppressed because this is not the device offload action.
7852	// Check if we are using PS4 in regular LTO mode.
7853	// Otherwise, issue an error.
7854
7855	auto OtherLTOMode =
7856	IsDeviceOffloadAction ? D.getLTOMode() : D.getOffloadLTOMode();
7857	auto OtherIsUsingLTO = OtherLTOMode != LTOK_None;
7858
7859	if ((!IsUsingLTO && !OtherIsUsingLTO) ||
7860	(IsPS4 && !UnifiedLTO && (D.getLTOMode() != LTOK_Full)))
7861	D.Diag(DiagID: diag::err_drv_argument_only_allowed_with)
7862	<< "-fwhole-program-vtables"
7863	<< ((IsPS4 && !UnifiedLTO) ? "-flto=full" : "-flto");
7864
7865	// Propagate -fwhole-program-vtables if this is an LTO compile.
7866	if (IsUsingLTO)
7867	CmdArgs.push_back(Elt: "-fwhole-program-vtables");
7868	}
7869
7870	bool DefaultsSplitLTOUnit =
7871	((WholeProgramVTables || SanitizeArgs.needsLTO()) &&
7872	(LTOMode == LTOK_Full || TC.canSplitThinLTOUnit())) ||
7873	(!Triple.isPS4() && UnifiedLTO);
7874	bool SplitLTOUnit =
7875	Args.hasFlag(Pos: options::OPT_fsplit_lto_unit,
7876	Neg: options::OPT_fno_split_lto_unit, Default: DefaultsSplitLTOUnit);
7877	if (SanitizeArgs.needsLTO() && !SplitLTOUnit)
7878	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"
7879	<< "-fsanitize=cfi";
7880	if (SplitLTOUnit)
7881	CmdArgs.push_back(Elt: "-fsplit-lto-unit");
7882
7883	if (Arg *A = Args.getLastArg(Ids: options::OPT_ffat_lto_objects,
7884	Ids: options::OPT_fno_fat_lto_objects)) {
7885	if (IsUsingLTO && A->getOption().matches(ID: options::OPT_ffat_lto_objects)) {
7886	assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);
7887	if (!Triple.isOSBinFormatELF()) {
7888	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
7889	<< A->getAsString(Args) << TC.getTripleString();
7890	}
7891	CmdArgs.push_back(Elt: Args.MakeArgString(
7892	Str: Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));
7893	CmdArgs.push_back(Elt: "-flto-unit");
7894	CmdArgs.push_back(Elt: "-ffat-lto-objects");
7895	A->render(Args, Output&: CmdArgs);
7896	}
7897	}
7898
7899	if (Arg *A = Args.getLastArg(Ids: options::OPT_fglobal_isel,
7900	Ids: options::OPT_fno_global_isel)) {
7901	CmdArgs.push_back(Elt: "-mllvm");
7902	if (A->getOption().matches(ID: options::OPT_fglobal_isel)) {
7903	CmdArgs.push_back(Elt: "-global-isel=1");
7904
7905	// GISel is on by default on AArch64 -O0, so don't bother adding
7906	// the fallback remarks for it. Other combinations will add a warning of
7907	// some kind.
7908	bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
7909	bool IsOptLevelSupported = false;
7910
7911	Arg *A = Args.getLastArg(Ids: options::OPT_O_Group);
7912	if (Triple.getArch() == llvm::Triple::aarch64) {
7913	if (!A || A->getOption().matches(ID: options::OPT_O0))
7914	IsOptLevelSupported = true;
7915	}
7916	if (!IsArchSupported || !IsOptLevelSupported) {
7917	CmdArgs.push_back(Elt: "-mllvm");
7918	CmdArgs.push_back(Elt: "-global-isel-abort=2");
7919
7920	if (!IsArchSupported)
7921	D.Diag(DiagID: diag::warn_drv_global_isel_incomplete) << Triple.getArchName();
7922	else
7923	D.Diag(DiagID: diag::warn_drv_global_isel_incomplete_opt);
7924	}
7925	} else {
7926	CmdArgs.push_back(Elt: "-global-isel=0");
7927	}
7928	}
7929
7930	if (Arg *A = Args.getLastArg(Ids: options::OPT_fforce_enable_int128,
7931	Ids: options::OPT_fno_force_enable_int128)) {
7932	if (A->getOption().matches(ID: options::OPT_fforce_enable_int128))
7933	CmdArgs.push_back(Elt: "-fforce-enable-int128");
7934	}
7935
7936	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fkeep_static_consts,
7937	Neg: options::OPT_fno_keep_static_consts);
7938	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fkeep_persistent_storage_variables,
7939	Neg: options::OPT_fno_keep_persistent_storage_variables);
7940	Args.addOptInFlag(Output&: CmdArgs, Pos: options::OPT_fcomplete_member_pointers,
7941	Neg: options::OPT_fno_complete_member_pointers);
7942	if (Arg *A = Args.getLastArg(Ids: options::OPT_cxx_static_destructors_EQ))
7943	A->render(Args, Output&: CmdArgs);
7944
7945	addMachineOutlinerArgs(D, Args, CmdArgs, Triple, /*IsLTO=*/false);
7946
7947	addOutlineAtomicsArgs(D, TC: getToolChain(), Args, CmdArgs, Triple);
7948
7949	if (Triple.isAArch64() &&
7950	(Args.hasArg(Ids: options::OPT_mno_fmv) ||
7951	(Triple.isAndroid() && Triple.isAndroidVersionLT(Major: 23)) ||
7952	getToolChain().GetRuntimeLibType(Args) != ToolChain::RLT_CompilerRT)) {
7953	// Disable Function Multiversioning on AArch64 target.
7954	CmdArgs.push_back(Elt: "-target-feature");
7955	CmdArgs.push_back(Elt: "-fmv");
7956	}
7957
7958	if (Args.hasFlag(Pos: options::OPT_faddrsig, Neg: options::OPT_fno_addrsig,
7959	Default: (TC.getTriple().isOSBinFormatELF() ||
7960	TC.getTriple().isOSBinFormatCOFF()) &&
7961	!TC.getTriple().isPS4() && !TC.getTriple().isVE() &&
7962	!TC.getTriple().isOSNetBSD() &&
7963	!Distro(D.getVFS(), TC.getTriple()).IsGentoo() &&
7964	!TC.getTriple().isAndroid() && TC.useIntegratedAs()))
7965	CmdArgs.push_back(Elt: "-faddrsig");
7966
7967	if ((Triple.isOSBinFormatELF() || Triple.isOSBinFormatMachO()) &&
7968	(EH || UnwindTables || AsyncUnwindTables ||
7969	DebugInfoKind != llvm::codegenoptions::NoDebugInfo))
7970	CmdArgs.push_back(Elt: "-D__GCC_HAVE_DWARF2_CFI_ASM=1");
7971
7972	if (Arg *A = Args.getLastArg(Ids: options::OPT_fsymbol_partition_EQ)) {
7973	std::string Str = A->getAsString(Args);
7974	if (!TC.getTriple().isOSBinFormatELF())
7975	D.Diag(DiagID: diag::err_drv_unsupported_opt_for_target)
7976	<< Str << TC.getTripleString();
7977	CmdArgs.push_back(Elt: Args.MakeArgString(Str));
7978	}
7979
7980	// Add the "-o out -x type src.c" flags last. This is done primarily to make
7981	// the -cc1 command easier to edit when reproducing compiler crashes.
7982	if (Output.getType() == types::TY_Dependencies) {
7983	// Handled with other dependency code.
7984	} else if (Output.isFilename()) {
7985	if (Output.getType() == clang::driver::types::TY_IFS_CPP ||
7986	Output.getType() == clang::driver::types::TY_IFS) {
7987	SmallString<128> OutputFilename(Output.getFilename());
7988	llvm::sys::path::replace_extension(path&: OutputFilename, extension: "ifs");
7989	CmdArgs.push_back(Elt: "-o");
7990	CmdArgs.push_back(Elt: Args.MakeArgString(Str: OutputFilename));
7991	} else {
7992	CmdArgs.push_back(Elt: "-o");
7993	CmdArgs.push_back(Elt: Output.getFilename());
7994	}
7995	} else {
7996	assert(Output.isNothing() && "Invalid output.");
7997	}
7998
7999	addDashXForInput(Args, Input, CmdArgs);
8000
8001	ArrayRef<InputInfo> FrontendInputs = Input;
8002	if (IsExtractAPI)
8003	FrontendInputs = ExtractAPIInputs;
8004	else if (Input.isNothing())
8005	FrontendInputs = {};
8006
8007	for (const InputInfo &Input : FrontendInputs) {
8008	if (Input.isFilename())
8009	CmdArgs.push_back(Elt: Input.getFilename());
8010	else
8011	Input.getInputArg().renderAsInput(Args, Output&: CmdArgs);
8012	}
8013
8014	if (D.CC1Main && !D.CCGenDiagnostics) {
8015	// Invoke the CC1 directly in this process
8016	C.addCommand(C: std::make_unique<CC1Command>(
8017	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
8018	args: Output, args: D.getPrependArg()));
8019	} else {
8020	C.addCommand(C: std::make_unique<Command>(
8021	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
8022	args: Output, args: D.getPrependArg()));
8023	}
8024
8025	// Make the compile command echo its inputs for /showFilenames.
8026	if (Output.getType() == types::TY_Object &&
8027	Args.hasFlag(Pos: options::OPT__SLASH_showFilenames,
8028	Neg: options::OPT__SLASH_showFilenames_, Default: false)) {
8029	C.getJobs().getJobs().back()->PrintInputFilenames = true;
8030	}
8031
8032	if (Arg *A = Args.getLastArg(Ids: options::OPT_pg))
8033	if (FPKeepKind == CodeGenOptions::FramePointerKind::None &&
8034	!Args.hasArg(Ids: options::OPT_mfentry))
8035	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
8036	<< A->getAsString(Args);
8037
8038	// Claim some arguments which clang supports automatically.
8039
8040	// -fpch-preprocess is used with gcc to add a special marker in the output to
8041	// include the PCH file.
8042	Args.ClaimAllArgs(Id0: options::OPT_fpch_preprocess);
8043
8044	// Claim some arguments which clang doesn't support, but we don't
8045	// care to warn the user about.
8046	Args.ClaimAllArgs(Id0: options::OPT_clang_ignored_f_Group);
8047	Args.ClaimAllArgs(Id0: options::OPT_clang_ignored_m_Group);
8048
8049	// Disable warnings for clang -E -emit-llvm foo.c
8050	Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
8051	}
8052
8053	Clang::Clang(const ToolChain &TC, bool HasIntegratedBackend)
8054	// CAUTION! The first constructor argument ("clang") is not arbitrary,
8055	// as it is for other tools. Some operations on a Tool actually test
8056	// whether that tool is Clang based on the Tool's Name as a string.
8057	: Tool("clang", "clang frontend", TC), HasBackend(HasIntegratedBackend) {}
8058
8059	Clang::~Clang() {}
8060
8061	/// Add options related to the Objective-C runtime/ABI.
8062	///
8063	/// Returns true if the runtime is non-fragile.
8064	ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
8065	const InputInfoList &inputs,
8066	ArgStringList &cmdArgs,
8067	RewriteKind rewriteKind) const {
8068	// Look for the controlling runtime option.
8069	Arg *runtimeArg =
8070	args.getLastArg(Ids: options::OPT_fnext_runtime, Ids: options::OPT_fgnu_runtime,
8071	Ids: options::OPT_fobjc_runtime_EQ);
8072
8073	// Just forward -fobjc-runtime= to the frontend. This supercedes
8074	// options about fragility.
8075	if (runtimeArg &&
8076	runtimeArg->getOption().matches(ID: options::OPT_fobjc_runtime_EQ)) {
8077	ObjCRuntime runtime;
8078	StringRef value = runtimeArg->getValue();
8079	if (runtime.tryParse(input: value)) {
8080	getToolChain().getDriver().Diag(DiagID: diag::err_drv_unknown_objc_runtime)
8081	<< value;
8082	}
8083	if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
8084	(runtime.getVersion() >= VersionTuple(2, 0)))
8085	if (!getToolChain().getTriple().isOSBinFormatELF() &&
8086	!getToolChain().getTriple().isOSBinFormatCOFF()) {
8087	getToolChain().getDriver().Diag(
8088	DiagID: diag::err_drv_gnustep_objc_runtime_incompatible_binary)
8089	<< runtime.getVersion().getMajor();
8090	}
8091
8092	runtimeArg->render(Args: args, Output&: cmdArgs);
8093	return runtime;
8094	}
8095
8096	// Otherwise, we'll need the ABI "version". Version numbers are
8097	// slightly confusing for historical reasons:
8098	// 1 - Traditional "fragile" ABI
8099	// 2 - Non-fragile ABI, version 1
8100	// 3 - Non-fragile ABI, version 2
8101	unsigned objcABIVersion = 1;
8102	// If -fobjc-abi-version= is present, use that to set the version.
8103	if (Arg *abiArg = args.getLastArg(Ids: options::OPT_fobjc_abi_version_EQ)) {
8104	StringRef value = abiArg->getValue();
8105	if (value == "1")
8106	objcABIVersion = 1;
8107	else if (value == "2")
8108	objcABIVersion = 2;
8109	else if (value == "3")
8110	objcABIVersion = 3;
8111	else
8112	getToolChain().getDriver().Diag(DiagID: diag::err_drv_clang_unsupported) << value;
8113	} else {
8114	// Otherwise, determine if we are using the non-fragile ABI.
8115	bool nonFragileABIIsDefault =
8116	(rewriteKind == RK_NonFragile ||
8117	(rewriteKind == RK_None &&
8118	getToolChain().IsObjCNonFragileABIDefault()));
8119	if (args.hasFlag(Pos: options::OPT_fobjc_nonfragile_abi,
8120	Neg: options::OPT_fno_objc_nonfragile_abi,
8121	Default: nonFragileABIIsDefault)) {
8122	// Determine the non-fragile ABI version to use.
8123	#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
8124	unsigned nonFragileABIVersion = 1;
8125	#else
8126	unsigned nonFragileABIVersion = 2;
8127	#endif
8128
8129	if (Arg *abiArg =
8130	args.getLastArg(Ids: options::OPT_fobjc_nonfragile_abi_version_EQ)) {
8131	StringRef value = abiArg->getValue();
8132	if (value == "1")
8133	nonFragileABIVersion = 1;
8134	else if (value == "2")
8135	nonFragileABIVersion = 2;
8136	else
8137	getToolChain().getDriver().Diag(DiagID: diag::err_drv_clang_unsupported)
8138	<< value;
8139	}
8140
8141	objcABIVersion = 1 + nonFragileABIVersion;
8142	} else {
8143	objcABIVersion = 1;
8144	}
8145	}
8146
8147	// We don't actually care about the ABI version other than whether
8148	// it's non-fragile.
8149	bool isNonFragile = objcABIVersion != 1;
8150
8151	// If we have no runtime argument, ask the toolchain for its default runtime.
8152	// However, the rewriter only really supports the Mac runtime, so assume that.
8153	ObjCRuntime runtime;
8154	if (!runtimeArg) {
8155	switch (rewriteKind) {
8156	case RK_None:
8157	runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
8158	break;
8159	case RK_Fragile:
8160	runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
8161	break;
8162	case RK_NonFragile:
8163	runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
8164	break;
8165	}
8166
8167	// -fnext-runtime
8168	} else if (runtimeArg->getOption().matches(ID: options::OPT_fnext_runtime)) {
8169	// On Darwin, make this use the default behavior for the toolchain.
8170	if (getToolChain().getTriple().isOSDarwin()) {
8171	runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
8172
8173	// Otherwise, build for a generic macosx port.
8174	} else {
8175	runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
8176	}
8177
8178	// -fgnu-runtime
8179	} else {
8180	assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
8181	// Legacy behaviour is to target the gnustep runtime if we are in
8182	// non-fragile mode or the GCC runtime in fragile mode.
8183	if (isNonFragile)
8184	runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
8185	else
8186	runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
8187	}
8188
8189	if (llvm::any_of(Range: inputs, P: [](const InputInfo &input) {
8190	return types::isObjC(Id: input.getType());
8191	}))
8192	cmdArgs.push_back(
8193	Elt: args.MakeArgString(Str: "-fobjc-runtime=" + runtime.getAsString()));
8194	return runtime;
8195	}
8196
8197	static bool maybeConsumeDash(const std::string &EH, size_t &I) {
8198	bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
8199	I += HaveDash;
8200	return !HaveDash;
8201	}
8202
8203	namespace {
8204	struct EHFlags {
8205	bool Synch = false;
8206	bool Asynch = false;
8207	bool NoUnwindC = false;
8208	};
8209	} // end anonymous namespace
8210
8211	/// /EH controls whether to run destructor cleanups when exceptions are
8212	/// thrown. There are three modifiers:
8213	/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
8214	/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
8215	/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
8216	/// - c: Assume that extern "C" functions are implicitly nounwind.
8217	/// The default is /EHs-c-, meaning cleanups are disabled.
8218	static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args,
8219	bool isWindowsMSVC) {
8220	EHFlags EH;
8221
8222	std::vector<std::string> EHArgs =
8223	Args.getAllArgValues(Id: options::OPT__SLASH_EH);
8224	for (const auto &EHVal : EHArgs) {
8225	for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
8226	switch (EHVal[I]) {
8227	case 'a':
8228	EH.Asynch = maybeConsumeDash(EH: EHVal, I);
8229	if (EH.Asynch) {
8230	// Async exceptions are Windows MSVC only.
8231	if (!isWindowsMSVC) {
8232	EH.Asynch = false;
8233	D.Diag(DiagID: clang::diag::warn_drv_unused_argument) << "/EHa" << EHVal;
8234	continue;
8235	}
8236	EH.Synch = false;
8237	}
8238	continue;
8239	case 'c':
8240	EH.NoUnwindC = maybeConsumeDash(EH: EHVal, I);
8241	continue;
8242	case 's':
8243	EH.Synch = maybeConsumeDash(EH: EHVal, I);
8244	if (EH.Synch)
8245	EH.Asynch = false;
8246	continue;
8247	default:
8248	break;
8249	}
8250	D.Diag(DiagID: clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
8251	break;
8252	}
8253	}
8254	// The /GX, /GX- flags are only processed if there are not /EH flags.
8255	// The default is that /GX is not specified.
8256	if (EHArgs.empty() &&
8257	Args.hasFlag(Pos: options::OPT__SLASH_GX, Neg: options::OPT__SLASH_GX_,
8258	/*Default=*/false)) {
8259	EH.Synch = true;
8260	EH.NoUnwindC = true;
8261	}
8262
8263	if (Args.hasArg(Ids: options::OPT__SLASH_kernel)) {
8264	EH.Synch = false;
8265	EH.NoUnwindC = false;
8266	EH.Asynch = false;
8267	}
8268
8269	return EH;
8270	}
8271
8272	void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
8273	ArgStringList &CmdArgs) const {
8274	bool isNVPTX = getToolChain().getTriple().isNVPTX();
8275
8276	ProcessVSRuntimeLibrary(TC: getToolChain(), Args, CmdArgs);
8277
8278	if (Arg *ShowIncludes =
8279	Args.getLastArg(Ids: options::OPT__SLASH_showIncludes,
8280	Ids: options::OPT__SLASH_showIncludes_user)) {
8281	CmdArgs.push_back(Elt: "--show-includes");
8282	if (ShowIncludes->getOption().matches(ID: options::OPT__SLASH_showIncludes))
8283	CmdArgs.push_back(Elt: "-sys-header-deps");
8284	}
8285
8286	// This controls whether or not we emit RTTI data for polymorphic types.
8287	if (Args.hasFlag(Pos: options::OPT__SLASH_GR_, Neg: options::OPT__SLASH_GR,
8288	/*Default=*/false))
8289	CmdArgs.push_back(Elt: "-fno-rtti-data");
8290
8291	// This controls whether or not we emit stack-protector instrumentation.
8292	// In MSVC, Buffer Security Check (/GS) is on by default.
8293	if (!isNVPTX && Args.hasFlag(Pos: options::OPT__SLASH_GS, Neg: options::OPT__SLASH_GS_,
8294	/*Default=*/true)) {
8295	CmdArgs.push_back(Elt: "-stack-protector");
8296	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(LangOptions::SSPStrong)));
8297	}
8298
8299	const Driver &D = getToolChain().getDriver();
8300
8301	bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment();
8302	EHFlags EH = parseClangCLEHFlags(D, Args, isWindowsMSVC: IsWindowsMSVC);
8303	if (!isNVPTX && (EH.Synch || EH.Asynch)) {
8304	if (types::isCXX(Id: InputType))
8305	CmdArgs.push_back(Elt: "-fcxx-exceptions");
8306	CmdArgs.push_back(Elt: "-fexceptions");
8307	if (EH.Asynch)
8308	CmdArgs.push_back(Elt: "-fasync-exceptions");
8309	}
8310	if (types::isCXX(Id: InputType) && EH.Synch && EH.NoUnwindC)
8311	CmdArgs.push_back(Elt: "-fexternc-nounwind");
8312
8313	// /EP should expand to -E -P.
8314	if (Args.hasArg(Ids: options::OPT__SLASH_EP)) {
8315	CmdArgs.push_back(Elt: "-E");
8316	CmdArgs.push_back(Elt: "-P");
8317	}
8318
8319	if (Args.hasFlag(Pos: options::OPT__SLASH_Zc_dllexportInlines_,
8320	Neg: options::OPT__SLASH_Zc_dllexportInlines,
8321	Default: false)) {
8322	CmdArgs.push_back(Elt: "-fno-dllexport-inlines");
8323	}
8324
8325	if (Args.hasFlag(Pos: options::OPT__SLASH_Zc_wchar_t_,
8326	Neg: options::OPT__SLASH_Zc_wchar_t, Default: false)) {
8327	CmdArgs.push_back(Elt: "-fno-wchar");
8328	}
8329
8330	if (Args.hasArg(Ids: options::OPT__SLASH_kernel)) {
8331	llvm::Triple::ArchType Arch = getToolChain().getArch();
8332	std::vector<std::string> Values =
8333	Args.getAllArgValues(Id: options::OPT__SLASH_arch);
8334	if (!Values.empty()) {
8335	llvm::SmallSet<std::string, 4> SupportedArches;
8336	if (Arch == llvm::Triple::x86)
8337	SupportedArches.insert(V: "IA32");
8338
8339	for (auto &V : Values)
8340	if (!SupportedArches.contains(V))
8341	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with)
8342	<< std::string("/arch:").append(str: V) << "/kernel";
8343	}
8344
8345	CmdArgs.push_back(Elt: "-fno-rtti");
8346	if (Args.hasFlag(Pos: options::OPT__SLASH_GR, Neg: options::OPT__SLASH_GR_, Default: false))
8347	D.Diag(DiagID: diag::err_drv_argument_not_allowed_with) << "/GR"
8348	<< "/kernel";
8349	}
8350
8351	Arg *MostGeneralArg = Args.getLastArg(Ids: options::OPT__SLASH_vmg);
8352	Arg *BestCaseArg = Args.getLastArg(Ids: options::OPT__SLASH_vmb);
8353	if (MostGeneralArg && BestCaseArg)
8354	D.Diag(DiagID: clang::diag::err_drv_argument_not_allowed_with)
8355	<< MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
8356
8357	if (MostGeneralArg) {
8358	Arg *SingleArg = Args.getLastArg(Ids: options::OPT__SLASH_vms);
8359	Arg *MultipleArg = Args.getLastArg(Ids: options::OPT__SLASH_vmm);
8360	Arg *VirtualArg = Args.getLastArg(Ids: options::OPT__SLASH_vmv);
8361
8362	Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
8363	Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
8364	if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
8365	D.Diag(DiagID: clang::diag::err_drv_argument_not_allowed_with)
8366	<< FirstConflict->getAsString(Args)
8367	<< SecondConflict->getAsString(Args);
8368
8369	if (SingleArg)
8370	CmdArgs.push_back(Elt: "-fms-memptr-rep=single");
8371	else if (MultipleArg)
8372	CmdArgs.push_back(Elt: "-fms-memptr-rep=multiple");
8373	else
8374	CmdArgs.push_back(Elt: "-fms-memptr-rep=virtual");
8375	}
8376
8377	if (Args.hasArg(Ids: options::OPT_regcall4))
8378	CmdArgs.push_back(Elt: "-regcall4");
8379
8380	// Parse the default calling convention options.
8381	if (Arg *CCArg =
8382	Args.getLastArg(Ids: options::OPT__SLASH_Gd, Ids: options::OPT__SLASH_Gr,
8383	Ids: options::OPT__SLASH_Gz, Ids: options::OPT__SLASH_Gv,
8384	Ids: options::OPT__SLASH_Gregcall)) {
8385	unsigned DCCOptId = CCArg->getOption().getID();
8386	const char *DCCFlag = nullptr;
8387	bool ArchSupported = !isNVPTX;
8388	llvm::Triple::ArchType Arch = getToolChain().getArch();
8389	switch (DCCOptId) {
8390	case options::OPT__SLASH_Gd:
8391	DCCFlag = "-fdefault-calling-conv=cdecl";
8392	break;
8393	case options::OPT__SLASH_Gr:
8394	ArchSupported = Arch == llvm::Triple::x86;
8395	DCCFlag = "-fdefault-calling-conv=fastcall";
8396	break;
8397	case options::OPT__SLASH_Gz:
8398	ArchSupported = Arch == llvm::Triple::x86;
8399	DCCFlag = "-fdefault-calling-conv=stdcall";
8400	break;
8401	case options::OPT__SLASH_Gv:
8402	ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
8403	DCCFlag = "-fdefault-calling-conv=vectorcall";
8404	break;
8405	case options::OPT__SLASH_Gregcall:
8406	ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
8407	DCCFlag = "-fdefault-calling-conv=regcall";
8408	break;
8409	}
8410
8411	// MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
8412	if (ArchSupported && DCCFlag)
8413	CmdArgs.push_back(Elt: DCCFlag);
8414	}
8415
8416	if (Args.hasArg(Ids: options::OPT__SLASH_Gregcall4))
8417	CmdArgs.push_back(Elt: "-regcall4");
8418
8419	Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_vtordisp_mode_EQ);
8420
8421	if (!Args.hasArg(Ids: options::OPT_fdiagnostics_format_EQ)) {
8422	CmdArgs.push_back(Elt: "-fdiagnostics-format");
8423	CmdArgs.push_back(Elt: "msvc");
8424	}
8425
8426	if (Args.hasArg(Ids: options::OPT__SLASH_kernel))
8427	CmdArgs.push_back(Elt: "-fms-kernel");
8428
8429	// Unwind v2 (epilog) information for x64 Windows.
8430	if (Args.hasArg(Ids: options::OPT__SLASH_d2epilogunwindrequirev2))
8431	CmdArgs.push_back(Elt: "-fwinx64-eh-unwindv2=required");
8432	else if (Args.hasArg(Ids: options::OPT__SLASH_d2epilogunwind))
8433	CmdArgs.push_back(Elt: "-fwinx64-eh-unwindv2=best-effort");
8434
8435	for (const Arg *A : Args.filtered(Ids: options::OPT__SLASH_guard)) {
8436	StringRef GuardArgs = A->getValue();
8437	// The only valid options are "cf", "cf,nochecks", "cf-", "ehcont" and
8438	// "ehcont-".
8439	if (GuardArgs.equals_insensitive(RHS: "cf")) {
8440	// Emit CFG instrumentation and the table of address-taken functions.
8441	CmdArgs.push_back(Elt: "-cfguard");
8442	} else if (GuardArgs.equals_insensitive(RHS: "cf,nochecks")) {
8443	// Emit only the table of address-taken functions.
8444	CmdArgs.push_back(Elt: "-cfguard-no-checks");
8445	} else if (GuardArgs.equals_insensitive(RHS: "ehcont")) {
8446	// Emit EH continuation table.
8447	CmdArgs.push_back(Elt: "-ehcontguard");
8448	} else if (GuardArgs.equals_insensitive(RHS: "cf-") ||
8449	GuardArgs.equals_insensitive(RHS: "ehcont-")) {
8450	// Do nothing, but we might want to emit a security warning in future.
8451	} else {
8452	D.Diag(DiagID: diag::err_drv_invalid_value) << A->getSpelling() << GuardArgs;
8453	}
8454	A->claim();
8455	}
8456
8457	for (const auto &FuncOverride :
8458	Args.getAllArgValues(Id: options::OPT__SLASH_funcoverride)) {
8459	CmdArgs.push_back(Elt: Args.MakeArgString(
8460	Str: Twine("-loader-replaceable-function=") + FuncOverride));
8461	}
8462	}
8463
8464	const char *Clang::getBaseInputName(const ArgList &Args,
8465	const InputInfo &Input) {
8466	return Args.MakeArgString(Str: llvm::sys::path::filename(path: Input.getBaseInput()));
8467	}
8468
8469	const char *Clang::getBaseInputStem(const ArgList &Args,
8470	const InputInfoList &Inputs) {
8471	const char *Str = getBaseInputName(Args, Input: Inputs[0]);
8472
8473	if (const char *End = strrchr(s: Str, c: '.'))
8474	return Args.MakeArgString(Str: std::string(Str, End));
8475
8476	return Str;
8477	}
8478
8479	const char *Clang::getDependencyFileName(const ArgList &Args,
8480	const InputInfoList &Inputs) {
8481	// FIXME: Think about this more.
8482
8483	if (Arg *OutputOpt = Args.getLastArg(Ids: options::OPT_o)) {
8484	SmallString<128> OutputFilename(OutputOpt->getValue());
8485	llvm::sys::path::replace_extension(path&: OutputFilename, extension: llvm::Twine('d'));
8486	return Args.MakeArgString(Str: OutputFilename);
8487	}
8488
8489	return Args.MakeArgString(Str: Twine(getBaseInputStem(Args, Inputs)) + ".d");
8490	}
8491
8492	// Begin ClangAs
8493
8494	void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
8495	ArgStringList &CmdArgs) const {
8496	StringRef CPUName;
8497	StringRef ABIName;
8498	const llvm::Triple &Triple = getToolChain().getTriple();
8499	mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
8500
8501	CmdArgs.push_back(Elt: "-target-abi");
8502	CmdArgs.push_back(Elt: ABIName.data());
8503	}
8504
8505	void ClangAs::AddX86TargetArgs(const ArgList &Args,
8506	ArgStringList &CmdArgs) const {
8507	addX86AlignBranchArgs(D: getToolChain().getDriver(), Args, CmdArgs,
8508	/*IsLTO=*/false);
8509
8510	if (Arg *A = Args.getLastArg(Ids: options::OPT_masm_EQ)) {
8511	StringRef Value = A->getValue();
8512	if (Value == "intel" || Value == "att") {
8513	CmdArgs.push_back(Elt: "-mllvm");
8514	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-x86-asm-syntax=" + Value));
8515	} else {
8516	getToolChain().getDriver().Diag(DiagID: diag::err_drv_unsupported_option_argument)
8517	<< A->getSpelling() << Value;
8518	}
8519	}
8520	}
8521
8522	void ClangAs::AddLoongArchTargetArgs(const ArgList &Args,
8523	ArgStringList &CmdArgs) const {
8524	CmdArgs.push_back(Elt: "-target-abi");
8525	CmdArgs.push_back(Elt: loongarch::getLoongArchABI(D: getToolChain().getDriver(), Args,
8526	Triple: getToolChain().getTriple())
8527	.data());
8528	}
8529
8530	void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
8531	ArgStringList &CmdArgs) const {
8532	const llvm::Triple &Triple = getToolChain().getTriple();
8533	StringRef ABIName = riscv::getRISCVABI(Args, Triple);
8534
8535	CmdArgs.push_back(Elt: "-target-abi");
8536	CmdArgs.push_back(Elt: ABIName.data());
8537
8538	if (Args.hasFlag(Pos: options::OPT_mdefault_build_attributes,
8539	Neg: options::OPT_mno_default_build_attributes, Default: true)) {
8540	CmdArgs.push_back(Elt: "-mllvm");
8541	CmdArgs.push_back(Elt: "-riscv-add-build-attributes");
8542	}
8543	}
8544
8545	void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
8546	const InputInfo &Output, const InputInfoList &Inputs,
8547	const ArgList &Args,
8548	const char *LinkingOutput) const {
8549	ArgStringList CmdArgs;
8550
8551	assert(Inputs.size() == 1 && "Unexpected number of inputs.");
8552	const InputInfo &Input = Inputs[0];
8553
8554	const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
8555	const std::string &TripleStr = Triple.getTriple();
8556	const auto &D = getToolChain().getDriver();
8557
8558	// Don't warn about "clang -w -c foo.s"
8559	Args.ClaimAllArgs(Id0: options::OPT_w);
8560	// and "clang -emit-llvm -c foo.s"
8561	Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
8562
8563	claimNoWarnArgs(Args);
8564
8565	// Invoke ourselves in -cc1as mode.
8566	//
8567	// FIXME: Implement custom jobs for internal actions.
8568	CmdArgs.push_back(Elt: "-cc1as");
8569
8570	// Add the "effective" target triple.
8571	CmdArgs.push_back(Elt: "-triple");
8572	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TripleStr));
8573
8574	getToolChain().addClangCC1ASTargetOptions(Args, CC1ASArgs&: CmdArgs);
8575
8576	// Set the output mode, we currently only expect to be used as a real
8577	// assembler.
8578	CmdArgs.push_back(Elt: "-filetype");
8579	CmdArgs.push_back(Elt: "obj");
8580
8581	// Set the main file name, so that debug info works even with
8582	// -save-temps or preprocessed assembly.
8583	CmdArgs.push_back(Elt: "-main-file-name");
8584	CmdArgs.push_back(Elt: Clang::getBaseInputName(Args, Input));
8585
8586	// Add the target cpu
8587	std::string CPU = getCPUName(D, Args, T: Triple, /*FromAs*/ true);
8588	if (!CPU.empty()) {
8589	CmdArgs.push_back(Elt: "-target-cpu");
8590	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPU));
8591	}
8592
8593	// Add the target features
8594	getTargetFeatures(D, Triple, Args, CmdArgs, ForAS: true);
8595
8596	// Ignore explicit -force_cpusubtype_ALL option.
8597	(void)Args.hasArg(Ids: options::OPT_force__cpusubtype__ALL);
8598
8599	// Pass along any -I options so we get proper .include search paths.
8600	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_I_Group);
8601
8602	// Pass along any --embed-dir or similar options so we get proper embed paths.
8603	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_embed_dir_EQ);
8604
8605	// Determine the original source input.
8606	auto FindSource = [](const Action *S) -> const Action * {
8607	while (S->getKind() != Action::InputClass) {
8608	assert(!S->getInputs().empty() && "unexpected root action!");
8609	S = S->getInputs()[0];
8610	}
8611	return S;
8612	};
8613	const Action *SourceAction = FindSource(&JA);
8614
8615	// Forward -g and handle debug info related flags, assuming we are dealing
8616	// with an actual assembly file.
8617	bool WantDebug = false;
8618	Args.ClaimAllArgs(Id0: options::OPT_g_Group);
8619	if (Arg *A = Args.getLastArg(Ids: options::OPT_g_Group))
8620	WantDebug = !A->getOption().matches(ID: options::OPT_g0) &&
8621	!A->getOption().matches(ID: options::OPT_ggdb0);
8622
8623	// If a -gdwarf argument appeared, remember it.
8624	bool EmitDwarf = false;
8625	if (const Arg *A = getDwarfNArg(Args))
8626	EmitDwarf = checkDebugInfoOption(A, Args, D, TC: getToolChain());
8627
8628	bool EmitCodeView = false;
8629	if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcodeview))
8630	EmitCodeView = checkDebugInfoOption(A, Args, D, TC: getToolChain());
8631
8632	// If the user asked for debug info but did not explicitly specify -gcodeview
8633	// or -gdwarf, ask the toolchain for the default format.
8634	if (!EmitCodeView && !EmitDwarf && WantDebug) {
8635	switch (getToolChain().getDefaultDebugFormat()) {
8636	case llvm::codegenoptions::DIF_CodeView:
8637	EmitCodeView = true;
8638	break;
8639	case llvm::codegenoptions::DIF_DWARF:
8640	EmitDwarf = true;
8641	break;
8642	}
8643	}
8644
8645	// If the arguments don't imply DWARF, don't emit any debug info here.
8646	if (!EmitDwarf)
8647	WantDebug = false;
8648
8649	llvm::codegenoptions::DebugInfoKind DebugInfoKind =
8650	llvm::codegenoptions::NoDebugInfo;
8651
8652	// Add the -fdebug-compilation-dir flag if needed.
8653	const char *DebugCompilationDir =
8654	addDebugCompDirArg(Args, CmdArgs, VFS: C.getDriver().getVFS());
8655
8656	if (SourceAction->getType() == types::TY_Asm ||
8657	SourceAction->getType() == types::TY_PP_Asm) {
8658	// You might think that it would be ok to set DebugInfoKind outside of
8659	// the guard for source type, however there is a test which asserts
8660	// that some assembler invocation receives no -debug-info-kind,
8661	// and it's not clear whether that test is just overly restrictive.
8662	DebugInfoKind = (WantDebug ? llvm::codegenoptions::DebugInfoConstructor
8663	: llvm::codegenoptions::NoDebugInfo);
8664
8665	addDebugPrefixMapArg(D: getToolChain().getDriver(), TC: getToolChain(), Args,
8666	CmdArgs);
8667
8668	// Set the AT_producer to the clang version when using the integrated
8669	// assembler on assembly source files.
8670	CmdArgs.push_back(Elt: "-dwarf-debug-producer");
8671	CmdArgs.push_back(Elt: Args.MakeArgString(Str: getClangFullVersion()));
8672
8673	// And pass along -I options
8674	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_I);
8675	}
8676	const unsigned DwarfVersion = getDwarfVersion(TC: getToolChain(), Args);
8677	RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
8678	DebuggerTuning: llvm::DebuggerKind::Default);
8679	renderDwarfFormat(D, T: Triple, Args, CmdArgs, DwarfVersion);
8680	RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC: getToolChain());
8681
8682	// Handle -fPIC et al -- the relocation-model affects the assembler
8683	// for some targets.
8684	llvm::Reloc::Model RelocationModel;
8685	unsigned PICLevel;
8686	bool IsPIE;
8687	std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
8688	ParsePICArgs(ToolChain: getToolChain(), Args);
8689
8690	const char *RMName = RelocationModelName(Model: RelocationModel);
8691	if (RMName) {
8692	CmdArgs.push_back(Elt: "-mrelocation-model");
8693	CmdArgs.push_back(Elt: RMName);
8694	}
8695
8696	// Optionally embed the -cc1as level arguments into the debug info, for build
8697	// analysis.
8698	if (getToolChain().UseDwarfDebugFlags()) {
8699	ArgStringList OriginalArgs;
8700	for (const auto &Arg : Args)
8701	Arg->render(Args, Output&: OriginalArgs);
8702
8703	SmallString<256> Flags;
8704	const char *Exec = getToolChain().getDriver().getClangProgramPath();
8705	escapeSpacesAndBackslashes(Arg: Exec, Res&: Flags);
8706	for (const char *OriginalArg : OriginalArgs) {
8707	SmallString<128> EscapedArg;
8708	escapeSpacesAndBackslashes(Arg: OriginalArg, Res&: EscapedArg);
8709	Flags += " ";
8710	Flags += EscapedArg;
8711	}
8712	CmdArgs.push_back(Elt: "-dwarf-debug-flags");
8713	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Flags));
8714	}
8715
8716	// FIXME: Add -static support, once we have it.
8717
8718	// Add target specific flags.
8719	switch (getToolChain().getArch()) {
8720	default:
8721	break;
8722
8723	case llvm::Triple::mips:
8724	case llvm::Triple::mipsel:
8725	case llvm::Triple::mips64:
8726	case llvm::Triple::mips64el:
8727	AddMIPSTargetArgs(Args, CmdArgs);
8728	break;
8729
8730	case llvm::Triple::x86:
8731	case llvm::Triple::x86_64:
8732	AddX86TargetArgs(Args, CmdArgs);
8733	break;
8734
8735	case llvm::Triple::arm:
8736	case llvm::Triple::armeb:
8737	case llvm::Triple::thumb:
8738	case llvm::Triple::thumbeb:
8739	// This isn't in AddARMTargetArgs because we want to do this for assembly
8740	// only, not C/C++.
8741	if (Args.hasFlag(Pos: options::OPT_mdefault_build_attributes,
8742	Neg: options::OPT_mno_default_build_attributes, Default: true)) {
8743	CmdArgs.push_back(Elt: "-mllvm");
8744	CmdArgs.push_back(Elt: "-arm-add-build-attributes");
8745	}
8746	break;
8747
8748	case llvm::Triple::aarch64:
8749	case llvm::Triple::aarch64_32:
8750	case llvm::Triple::aarch64_be:
8751	if (Args.hasArg(Ids: options::OPT_mmark_bti_property)) {
8752	CmdArgs.push_back(Elt: "-mllvm");
8753	CmdArgs.push_back(Elt: "-aarch64-mark-bti-property");
8754	}
8755	break;
8756
8757	case llvm::Triple::loongarch32:
8758	case llvm::Triple::loongarch64:
8759	AddLoongArchTargetArgs(Args, CmdArgs);
8760	break;
8761
8762	case llvm::Triple::riscv32:
8763	case llvm::Triple::riscv64:
8764	AddRISCVTargetArgs(Args, CmdArgs);
8765	break;
8766
8767	case llvm::Triple::hexagon:
8768	if (Args.hasFlag(Pos: options::OPT_mdefault_build_attributes,
8769	Neg: options::OPT_mno_default_build_attributes, Default: true)) {
8770	CmdArgs.push_back(Elt: "-mllvm");
8771	CmdArgs.push_back(Elt: "-hexagon-add-build-attributes");
8772	}
8773	break;
8774	}
8775
8776	// Consume all the warning flags. Usually this would be handled more
8777	// gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
8778	// doesn't handle that so rather than warning about unused flags that are
8779	// actually used, we'll lie by omission instead.
8780	// FIXME: Stop lying and consume only the appropriate driver flags
8781	Args.ClaimAllArgs(Id0: options::OPT_W_Group);
8782
8783	CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
8784	D: getToolChain().getDriver());
8785
8786	// Forward -Xclangas arguments to -cc1as
8787	for (auto Arg : Args.filtered(Ids: options::OPT_Xclangas)) {
8788	Arg->claim();
8789	CmdArgs.push_back(Elt: Arg->getValue());
8790	}
8791
8792	Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_mllvm);
8793
8794	if (DebugInfoKind > llvm::codegenoptions::NoDebugInfo && Output.isFilename())
8795	addDebugObjectName(Args, CmdArgs, DebugCompilationDir,
8796	OutputFileName: Output.getFilename());
8797
8798	// Fixup any previous commands that use -object-file-name because when we
8799	// generated them, the final .obj name wasn't yet known.
8800	for (Command &J : C.getJobs()) {
8801	if (SourceAction != FindSource(&J.getSource()))
8802	continue;
8803	auto &JArgs = J.getArguments();
8804	for (unsigned I = 0; I < JArgs.size(); ++I) {
8805	if (StringRef(JArgs[I]).starts_with(Prefix: "-object-file-name=") &&
8806	Output.isFilename()) {
8807	ArgStringList NewArgs(JArgs.begin(), JArgs.begin() + I);
8808	addDebugObjectName(Args, CmdArgs&: NewArgs, DebugCompilationDir,
8809	OutputFileName: Output.getFilename());
8810	NewArgs.append(in_start: JArgs.begin() + I + 1, in_end: JArgs.end());
8811	J.replaceArguments(List: NewArgs);
8812	break;
8813	}
8814	}
8815	}
8816
8817	assert(Output.isFilename() && "Unexpected lipo output.");
8818	CmdArgs.push_back(Elt: "-o");
8819	CmdArgs.push_back(Elt: Output.getFilename());
8820
8821	const llvm::Triple &T = getToolChain().getTriple();
8822	Arg *A;
8823	if (getDebugFissionKind(D, Args, Arg&: A) == DwarfFissionKind::Split &&
8824	T.isOSBinFormatELF()) {
8825	CmdArgs.push_back(Elt: "-split-dwarf-output");
8826	CmdArgs.push_back(Elt: SplitDebugName(JA, Args, Input, Output));
8827	}
8828
8829	if (Triple.isAMDGPU())
8830	handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs, /*IsCC1As=*/true);
8831
8832	assert(Input.isFilename() && "Invalid input.");
8833	CmdArgs.push_back(Elt: Input.getFilename());
8834
8835	const char *Exec = getToolChain().getDriver().getClangProgramPath();
8836	if (D.CC1Main && !D.CCGenDiagnostics) {
8837	// Invoke cc1as directly in this process.
8838	C.addCommand(C: std::make_unique<CC1Command>(
8839	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
8840	args: Output, args: D.getPrependArg()));
8841	} else {
8842	C.addCommand(C: std::make_unique<Command>(
8843	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
8844	args: Output, args: D.getPrependArg()));
8845	}
8846	}
8847
8848	// Begin OffloadBundler
8849	void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
8850	const InputInfo &Output,
8851	const InputInfoList &Inputs,
8852	const llvm::opt::ArgList &TCArgs,
8853	const char *LinkingOutput) const {
8854	// The version with only one output is expected to refer to a bundling job.
8855	assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
8856
8857	// The bundling command looks like this:
8858	// clang-offload-bundler -type=bc
8859	// -targets=host-triple,openmp-triple1,openmp-triple2
8860	// -output=output_file
8861	// -input=unbundle_file_host
8862	// -input=unbundle_file_tgt1
8863	// -input=unbundle_file_tgt2
8864
8865	ArgStringList CmdArgs;
8866
8867	// Get the type.
8868	CmdArgs.push_back(Elt: TCArgs.MakeArgString(
8869	Str: Twine("-type=") + types::getTypeTempSuffix(Id: Output.getType())));
8870
8871	assert(JA.getInputs().size() == Inputs.size() &&
8872	"Not have inputs for all dependence actions??");
8873
8874	// Get the targets.
8875	SmallString<128> Triples;
8876	Triples += "-targets=";
8877	for (unsigned I = 0; I < Inputs.size(); ++I) {
8878	if (I)
8879	Triples += ',';
8880
8881	// Find ToolChain for this input.
8882	Action::OffloadKind CurKind = Action::OFK_Host;
8883	const ToolChain *CurTC = &getToolChain();
8884	const Action *CurDep = JA.getInputs()[I];
8885
8886	if (const auto *OA = dyn_cast<OffloadAction>(Val: CurDep)) {
8887	CurTC = nullptr;
8888	OA->doOnEachDependence(Work: [&](Action *A, const ToolChain *TC, const char *) {
8889	assert(CurTC == nullptr && "Expected one dependence!");
8890	CurKind = A->getOffloadingDeviceKind();
8891	CurTC = TC;
8892	});
8893	}
8894	Triples += Action::GetOffloadKindName(Kind: CurKind);
8895	Triples += '-';
8896	Triples +=
8897	CurTC->getTriple().normalize(Form: llvm::Triple::CanonicalForm::FOUR_IDENT);
8898	if ((CurKind == Action::OFK_HIP || CurKind == Action::OFK_Cuda) &&
8899	!StringRef(CurDep->getOffloadingArch()).empty()) {
8900	Triples += '-';
8901	Triples += CurDep->getOffloadingArch();
8902	}
8903
8904	// TODO: Replace parsing of -march flag. Can be done by storing GPUArch
8905	// with each toolchain.
8906	StringRef GPUArchName;
8907	if (CurKind == Action::OFK_OpenMP) {
8908	// Extract GPUArch from -march argument in TC argument list.
8909	for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {
8910	auto ArchStr = StringRef(TCArgs.getArgString(Index: ArgIndex));
8911	auto Arch = ArchStr.starts_with_insensitive(Prefix: "-march=");
8912	if (Arch) {
8913	GPUArchName = ArchStr.substr(Start: 7);
8914	Triples += "-";
8915	break;
8916	}
8917	}
8918	Triples += GPUArchName.str();
8919	}
8920	}
8921	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: Triples));
8922
8923	// Get bundled file command.
8924	CmdArgs.push_back(
8925	Elt: TCArgs.MakeArgString(Str: Twine("-output=") + Output.getFilename()));
8926
8927	// Get unbundled files command.
8928	for (unsigned I = 0; I < Inputs.size(); ++I) {
8929	SmallString<128> UB;
8930	UB += "-input=";
8931
8932	// Find ToolChain for this input.
8933	const ToolChain *CurTC = &getToolChain();
8934	if (const auto *OA = dyn_cast<OffloadAction>(Val: JA.getInputs()[I])) {
8935	CurTC = nullptr;
8936	OA->doOnEachDependence(Work: [&](Action *, const ToolChain *TC, const char *) {
8937	assert(CurTC == nullptr && "Expected one dependence!");
8938	CurTC = TC;
8939	});
8940	UB += C.addTempFile(
8941	Name: C.getArgs().MakeArgString(Str: CurTC->getInputFilename(Input: Inputs[I])));
8942	} else {
8943	UB += CurTC->getInputFilename(Input: Inputs[I]);
8944	}
8945	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: UB));
8946	}
8947	addOffloadCompressArgs(TCArgs, CmdArgs);
8948	// All the inputs are encoded as commands.
8949	C.addCommand(C: std::make_unique<Command>(
8950	args: JA, args: *this, args: ResponseFileSupport::None(),
8951	args: TCArgs.MakeArgString(Str: getToolChain().GetProgramPath(Name: getShortName())),
8952	args&: CmdArgs, args: ArrayRef<InputInfo>(), args: Output));
8953	}
8954
8955	void OffloadBundler::ConstructJobMultipleOutputs(
8956	Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
8957	const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
8958	const char *LinkingOutput) const {
8959	// The version with multiple outputs is expected to refer to a unbundling job.
8960	auto &UA = cast<OffloadUnbundlingJobAction>(Val: JA);
8961
8962	// The unbundling command looks like this:
8963	// clang-offload-bundler -type=bc
8964	// -targets=host-triple,openmp-triple1,openmp-triple2
8965	// -input=input_file
8966	// -output=unbundle_file_host
8967	// -output=unbundle_file_tgt1
8968	// -output=unbundle_file_tgt2
8969	// -unbundle
8970
8971	ArgStringList CmdArgs;
8972
8973	assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
8974	InputInfo Input = Inputs.front();
8975
8976	// Get the type.
8977	CmdArgs.push_back(Elt: TCArgs.MakeArgString(
8978	Str: Twine("-type=") + types::getTypeTempSuffix(Id: Input.getType())));
8979
8980	// Get the targets.
8981	SmallString<128> Triples;
8982	Triples += "-targets=";
8983	auto DepInfo = UA.getDependentActionsInfo();
8984	for (unsigned I = 0; I < DepInfo.size(); ++I) {
8985	if (I)
8986	Triples += ',';
8987
8988	auto &Dep = DepInfo[I];
8989	Triples += Action::GetOffloadKindName(Kind: Dep.DependentOffloadKind);
8990	Triples += '-';
8991	Triples += Dep.DependentToolChain->getTriple().normalize(
8992	Form: llvm::Triple::CanonicalForm::FOUR_IDENT);
8993	if ((Dep.DependentOffloadKind == Action::OFK_HIP ||
8994	Dep.DependentOffloadKind == Action::OFK_Cuda) &&
8995	!Dep.DependentBoundArch.empty()) {
8996	Triples += '-';
8997	Triples += Dep.DependentBoundArch;
8998	}
8999	// TODO: Replace parsing of -march flag. Can be done by storing GPUArch
9000	// with each toolchain.
9001	StringRef GPUArchName;
9002	if (Dep.DependentOffloadKind == Action::OFK_OpenMP) {
9003	// Extract GPUArch from -march argument in TC argument list.
9004	for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {
9005	StringRef ArchStr = StringRef(TCArgs.getArgString(Index: ArgIndex));
9006	auto Arch = ArchStr.starts_with_insensitive(Prefix: "-march=");
9007	if (Arch) {
9008	GPUArchName = ArchStr.substr(Start: 7);
9009	Triples += "-";
9010	break;
9011	}
9012	}
9013	Triples += GPUArchName.str();
9014	}
9015	}
9016
9017	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: Triples));
9018
9019	// Get bundled file command.
9020	CmdArgs.push_back(
9021	Elt: TCArgs.MakeArgString(Str: Twine("-input=") + Input.getFilename()));
9022
9023	// Get unbundled files command.
9024	for (unsigned I = 0; I < Outputs.size(); ++I) {
9025	SmallString<128> UB;
9026	UB += "-output=";
9027	UB += DepInfo[I].DependentToolChain->getInputFilename(Input: Outputs[I]);
9028	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: UB));
9029	}
9030	CmdArgs.push_back(Elt: "-unbundle");
9031	CmdArgs.push_back(Elt: "-allow-missing-bundles");
9032	if (TCArgs.hasArg(Ids: options::OPT_v))
9033	CmdArgs.push_back(Elt: "-verbose");
9034
9035	// All the inputs are encoded as commands.
9036	C.addCommand(C: std::make_unique<Command>(
9037	args: JA, args: *this, args: ResponseFileSupport::None(),
9038	args: TCArgs.MakeArgString(Str: getToolChain().GetProgramPath(Name: getShortName())),
9039	args&: CmdArgs, args: ArrayRef<InputInfo>(), args: Outputs));
9040	}
9041
9042	void OffloadPackager::ConstructJob(Compilation &C, const JobAction &JA,
9043	const InputInfo &Output,
9044	const InputInfoList &Inputs,
9045	const llvm::opt::ArgList &Args,
9046	const char *LinkingOutput) const {
9047	ArgStringList CmdArgs;
9048
9049	// Add the output file name.
9050	assert(Output.isFilename() && "Invalid output.");
9051	CmdArgs.push_back(Elt: "-o");
9052	CmdArgs.push_back(Elt: Output.getFilename());
9053
9054	// Create the inputs to bundle the needed metadata.
9055	for (const InputInfo &Input : Inputs) {
9056	const Action *OffloadAction = Input.getAction();
9057	const ToolChain *TC = OffloadAction->getOffloadingToolChain();
9058	const ArgList &TCArgs =
9059	C.getArgsForToolChain(TC, BoundArch: OffloadAction->getOffloadingArch(),
9060	DeviceOffloadKind: OffloadAction->getOffloadingDeviceKind());
9061	StringRef File = C.getArgs().MakeArgString(Str: TC->getInputFilename(Input));
9062	StringRef Arch = OffloadAction->getOffloadingArch()
9063	? OffloadAction->getOffloadingArch()
9064	: TCArgs.getLastArgValue(Id: options::OPT_march_EQ);
9065	StringRef Kind =
9066	Action::GetOffloadKindName(Kind: OffloadAction->getOffloadingDeviceKind());
9067
9068	ArgStringList Features;
9069	SmallVector<StringRef> FeatureArgs;
9070	getTargetFeatures(D: TC->getDriver(), Triple: TC->getTriple(), Args: TCArgs, CmdArgs&: Features,
9071	ForAS: false);
9072	llvm::copy_if(Range&: Features, Out: std::back_inserter(x&: FeatureArgs),
9073	P: [](StringRef Arg) { return !Arg.starts_with(Prefix: "-target"); });
9074
9075	// TODO: We need to pass in the full target-id and handle it properly in the
9076	// linker wrapper.
9077	SmallVector<std::string> Parts{
9078	"file=" + File.str(),
9079	"triple=" + TC->getTripleString(),
9080	"arch=" + (Arch.empty() ? "generic" : Arch.str()),
9081	"kind=" + Kind.str(),
9082	};
9083
9084	if (TC->getDriver().isUsingOffloadLTO())
9085	for (StringRef Feature : FeatureArgs)
9086	Parts.emplace_back(Args: "feature=" + Feature.str());
9087
9088	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--image=" + llvm::join(R&: Parts, Separator: ",")));
9089	}
9090
9091	C.addCommand(C: std::make_unique<Command>(
9092	args: JA, args: *this, args: ResponseFileSupport::None(),
9093	args: Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: getShortName())),
9094	args&: CmdArgs, args: Inputs, args: Output));
9095	}
9096
9097	void LinkerWrapper::ConstructJob(Compilation &C, const JobAction &JA,
9098	const InputInfo &Output,
9099	const InputInfoList &Inputs,
9100	const ArgList &Args,
9101	const char *LinkingOutput) const {
9102	using namespace options;
9103
9104	// A list of permitted options that will be forwarded to the embedded device
9105	// compilation job.
9106	const llvm::DenseSet<unsigned> CompilerOptions{
9107	OPT_v,
9108	OPT_cuda_path_EQ,
9109	OPT_rocm_path_EQ,
9110	OPT_O_Group,
9111	OPT_g_Group,
9112	OPT_g_flags_Group,
9113	OPT_R_value_Group,
9114	OPT_R_Group,
9115	OPT_Xcuda_ptxas,
9116	OPT_ftime_report,
9117	OPT_ftime_trace,
9118	OPT_ftime_trace_EQ,
9119	OPT_ftime_trace_granularity_EQ,
9120	OPT_ftime_trace_verbose,
9121	OPT_opt_record_file,
9122	OPT_opt_record_format,
9123	OPT_opt_record_passes,
9124	OPT_fsave_optimization_record,
9125	OPT_fsave_optimization_record_EQ,
9126	OPT_fno_save_optimization_record,
9127	OPT_foptimization_record_file_EQ,
9128	OPT_foptimization_record_passes_EQ,
9129	OPT_save_temps,
9130	OPT_save_temps_EQ,
9131	OPT_mcode_object_version_EQ,
9132	OPT_load,
9133	OPT_fno_lto,
9134	OPT_flto,
9135	OPT_flto_partitions_EQ,
9136	OPT_flto_EQ};
9137	const llvm::DenseSet<unsigned> LinkerOptions{OPT_mllvm, OPT_Zlinker_input};
9138	auto ShouldForward = [&](const llvm::DenseSet<unsigned> &Set, Arg *A) {
9139	return Set.contains(V: A->getOption().getID()) ||
9140	(A->getOption().getGroup().isValid() &&
9141	Set.contains(V: A->getOption().getGroup().getID()));
9142	};
9143
9144	ArgStringList CmdArgs;
9145	for (Action::OffloadKind Kind : {Action::OFK_Cuda, Action::OFK_OpenMP,
9146	Action::OFK_HIP, Action::OFK_SYCL}) {
9147	auto TCRange = C.getOffloadToolChains(Kind);
9148	for (auto &I : llvm::make_range(p: TCRange)) {
9149	const ToolChain *TC = I.second;
9150
9151	// We do not use a bound architecture here so options passed only to a
9152	// specific architecture via -Xarch_<cpu> will not be forwarded.
9153	ArgStringList CompilerArgs;
9154	ArgStringList LinkerArgs;
9155	const DerivedArgList &ToolChainArgs =
9156	C.getArgsForToolChain(TC, /*BoundArch=*/"", DeviceOffloadKind: Kind);
9157	for (Arg *A : ToolChainArgs) {
9158	if (A->getOption().matches(ID: OPT_Zlinker_input))
9159	LinkerArgs.emplace_back(Args: A->getValue());
9160	else if (ShouldForward(CompilerOptions, A))
9161	A->render(Args, Output&: CompilerArgs);
9162	else if (ShouldForward(LinkerOptions, A))
9163	A->render(Args, Output&: LinkerArgs);
9164	}
9165
9166	// If the user explicitly requested it via `--offload-arch` we should
9167	// extract it from any static libraries if present.
9168	for (StringRef Arg : ToolChainArgs.getAllArgValues(Id: OPT_offload_arch_EQ))
9169	CmdArgs.emplace_back(Args: Args.MakeArgString(Str: "--should-extract=" + Arg));
9170
9171	// If this is OpenMP the device linker will need `-lompdevice`.
9172	if (Kind == Action::OFK_OpenMP && !Args.hasArg(Ids: OPT_no_offloadlib) &&
9173	(TC->getTriple().isAMDGPU() || TC->getTriple().isNVPTX()))
9174	LinkerArgs.emplace_back(Args: "-lompdevice");
9175
9176	// Forward all of these to the appropriate toolchain.
9177	for (StringRef Arg : CompilerArgs)
9178	CmdArgs.push_back(Elt: Args.MakeArgString(
9179	Str: "--device-compiler=" + TC->getTripleString() + "=" + Arg));
9180	for (StringRef Arg : LinkerArgs)
9181	CmdArgs.push_back(Elt: Args.MakeArgString(
9182	Str: "--device-linker=" + TC->getTripleString() + "=" + Arg));
9183
9184	// Forward the LTO mode relying on the Driver's parsing.
9185	if (C.getDriver().getOffloadLTOMode() == LTOK_Full)
9186	CmdArgs.push_back(Elt: Args.MakeArgString(
9187	Str: "--device-compiler=" + TC->getTripleString() + "=-flto=full"));
9188	else if (C.getDriver().getOffloadLTOMode() == LTOK_Thin) {
9189	CmdArgs.push_back(Elt: Args.MakeArgString(
9190	Str: "--device-compiler=" + TC->getTripleString() + "=-flto=thin"));
9191	if (TC->getTriple().isAMDGPU()) {
9192	CmdArgs.push_back(
9193	Elt: Args.MakeArgString(Str: "--device-linker=" + TC->getTripleString() +
9194	"=-plugin-opt=-force-import-all"));
9195	CmdArgs.push_back(
9196	Elt: Args.MakeArgString(Str: "--device-linker=" + TC->getTripleString() +
9197	"=-plugin-opt=-avail-extern-to-local"));
9198	CmdArgs.push_back(Elt: Args.MakeArgString(
9199	Str: "--device-linker=" + TC->getTripleString() +
9200	"=-plugin-opt=-avail-extern-gv-in-addrspace-to-local=3"));
9201	if (Kind == Action::OFK_OpenMP) {
9202	CmdArgs.push_back(
9203	Elt: Args.MakeArgString(Str: "--device-linker=" + TC->getTripleString() +
9204	"=-plugin-opt=-amdgpu-internalize-symbols"));
9205	}
9206	}
9207	}
9208	}
9209	}
9210
9211	CmdArgs.push_back(
9212	Elt: Args.MakeArgString(Str: "--host-triple=" + getToolChain().getTripleString()));
9213	if (Args.hasArg(Ids: options::OPT_v))
9214	CmdArgs.push_back(Elt: "--wrapper-verbose");
9215	if (Arg *A = Args.getLastArg(Ids: options::OPT_cuda_path_EQ))
9216	CmdArgs.push_back(
9217	Elt: Args.MakeArgString(Str: Twine("--cuda-path=") + A->getValue()));
9218
9219	// Construct the link job so we can wrap around it.
9220	Linker->ConstructJob(C, JA, Output, Inputs, TCArgs: Args, LinkingOutput);
9221	const auto &LinkCommand = C.getJobs().getJobs().back();
9222
9223	// Forward -Xoffload-linker<-triple> arguments to the device link job.
9224	for (Arg *A : Args.filtered(Ids: options::OPT_Xoffload_linker)) {
9225	StringRef Val = A->getValue(N: 0);
9226	if (Val.empty())
9227	CmdArgs.push_back(
9228	Elt: Args.MakeArgString(Str: Twine("--device-linker=") + A->getValue(N: 1)));
9229	else
9230	CmdArgs.push_back(Elt: Args.MakeArgString(
9231	Str: "--device-linker=" +
9232	ToolChain::getOpenMPTriple(TripleStr: Val.drop_front()).getTriple() + "=" +
9233	A->getValue(N: 1)));
9234	}
9235	Args.ClaimAllArgs(Id0: options::OPT_Xoffload_linker);
9236
9237	// Embed bitcode instead of an object in JIT mode.
9238	if (Args.hasFlag(Pos: options::OPT_fopenmp_target_jit,
9239	Neg: options::OPT_fno_openmp_target_jit, Default: false))
9240	CmdArgs.push_back(Elt: "--embed-bitcode");
9241
9242	// Save temporary files created by the linker wrapper.
9243	if (Args.hasArg(Ids: options::OPT_save_temps_EQ) ||
9244	Args.hasArg(Ids: options::OPT_save_temps))
9245	CmdArgs.push_back(Elt: "--save-temps");
9246
9247	// Pass in the C library for GPUs if present and not disabled.
9248	if (Args.hasFlag(Pos: options::OPT_offloadlib, Neg: OPT_no_offloadlib, Default: true) &&
9249	!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_r,
9250	Ids: options::OPT_nodefaultlibs, Ids: options::OPT_nolibc,
9251	Ids: options::OPT_nogpulibc)) {
9252	forAllAssociatedToolChains(C, JA, RegularToolChain: getToolChain(), Work: [&](const ToolChain &TC) {
9253	// The device C library is only available for NVPTX and AMDGPU targets
9254	// currently.
9255	if (!TC.getTriple().isNVPTX() && !TC.getTriple().isAMDGPU())
9256	return;
9257	bool HasLibC = TC.getStdlibIncludePath().has_value();
9258	if (HasLibC) {
9259	CmdArgs.push_back(Elt: Args.MakeArgString(
9260	Str: "--device-linker=" + TC.getTripleString() + "=" + "-lc"));
9261	CmdArgs.push_back(Elt: Args.MakeArgString(
9262	Str: "--device-linker=" + TC.getTripleString() + "=" + "-lm"));
9263	}
9264	auto HasCompilerRT = getToolChain().getVFS().exists(
9265	Path: TC.getCompilerRT(Args, Component: "builtins", Type: ToolChain::FT_Static));
9266	if (HasCompilerRT)
9267	CmdArgs.push_back(
9268	Elt: Args.MakeArgString(Str: "--device-linker=" + TC.getTripleString() + "=" +
9269	"-lclang_rt.builtins"));
9270	bool HasFlangRT = HasCompilerRT && C.getDriver().IsFlangMode();
9271	if (HasFlangRT)
9272	CmdArgs.push_back(
9273	Elt: Args.MakeArgString(Str: "--device-linker=" + TC.getTripleString() + "=" +
9274	"-lflang_rt.runtime"));
9275	});
9276	}
9277
9278	// Add the linker arguments to be forwarded by the wrapper.
9279	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("--linker-path=") +
9280	LinkCommand->getExecutable()));
9281
9282	// We use action type to differentiate two use cases of the linker wrapper.
9283	// TY_Image for normal linker wrapper work.
9284	// TY_Object for HIP fno-gpu-rdc embedding device binary in a relocatable
9285	// object.
9286	assert(JA.getType() == types::TY_Object || JA.getType() == types::TY_Image);
9287	if (JA.getType() == types::TY_Object) {
9288	CmdArgs.append(IL: {"-o", Output.getFilename()});
9289	for (auto Input : Inputs)
9290	CmdArgs.push_back(Elt: Input.getFilename());
9291	CmdArgs.push_back(Elt: "-r");
9292	} else
9293	for (const char *LinkArg : LinkCommand->getArguments())
9294	CmdArgs.push_back(Elt: LinkArg);
9295
9296	addOffloadCompressArgs(TCArgs: Args, CmdArgs);
9297
9298	if (Arg *A = Args.getLastArg(Ids: options::OPT_offload_jobs_EQ)) {
9299	int NumThreads;
9300	if (StringRef(A->getValue()).getAsInteger(Radix: 10, Result&: NumThreads) ||
9301	NumThreads <= 0)
9302	C.getDriver().Diag(DiagID: diag::err_drv_invalid_int_value)
9303	<< A->getAsString(Args) << A->getValue();
9304	else
9305	CmdArgs.push_back(
9306	Elt: Args.MakeArgString(Str: "--wrapper-jobs=" + Twine(NumThreads)));
9307	}
9308
9309	const char *Exec =
9310	Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: "clang-linker-wrapper"));
9311
9312	// Replace the executable and arguments of the link job with the
9313	// wrapper.
9314	LinkCommand->replaceExecutable(Exe: Exec);
9315	LinkCommand->replaceArguments(List: CmdArgs);
9316	}
9317