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(clang::driver::options::OPT_C, options::OPT_CC,
67	options::OPT_fminimize_whitespace,
68	options::OPT_fno_minimize_whitespace,
69	options::OPT_fkeep_system_includes,
70	options::OPT_fno_keep_system_includes)) {
71	if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
72	!Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
73	D.Diag(clang::diag::DiagID: 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(options::OPT_static))
83	if (const Arg *A =
84	Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
85	D.Diag(diag::DiagID: 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(options::OPT_fexceptions);
159	Args.ClaimAllArgs(options::OPT_fno_exceptions);
160	Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
161	Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
162	Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
163	Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
164	Args.ClaimAllArgs(options::OPT_fasync_exceptions);
165	Args.ClaimAllArgs(options::OPT_fno_async_exceptions);
166	return false;
167	}
168
169	// See if the user explicitly enabled exceptions.
170	bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
171	false);
172
173	// Async exceptions are Windows MSVC only.
174	if (Triple.isWindowsMSVCEnvironment()) {
175	bool EHa = Args.hasFlag(options::OPT_fasync_exceptions,
176	options::OPT_fno_async_exceptions, 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(options::OPT_fobjc_exceptions,
187	options::OPT_fno_objc_exceptions, 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	options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
199	options::OPT_fexceptions, options::OPT_fno_exceptions);
200	if (ExceptionArg)
201	CXXExceptionsEnabled =
202	ExceptionArg->getOption().matches(options::ID: OPT_fcxx_exceptions) ||
203	ExceptionArg->getOption().matches(options::ID: 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(CmdArgs, options::OPT_fignore_exceptions);
216
217	Args.addOptInFlag(Output&: CmdArgs, options::Pos: OPT_fassume_nothrow_exception_dtor,
218	options::Neg: 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(options::OPT_fautolink, 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(options::OPT_ffile_compilation_dir_EQ,
246	options::OPT_fdebug_compilation_dir_EQ)) {
247	if (A->getOption().matches(options::ID: 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(options::OPT_Xclang))
265	if (StringRef(Arg->getValue()).starts_with("-object-file-name"))
266	return;
267
268	if (Args.hasArg(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(diag::DiagID: 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(options::OPT_ffile_prefix_map_EQ,
304	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(options::OPT_ffile_prefix_map_EQ,
318	options::OPT_fmacro_prefix_map_EQ)) {
319	StringRef Map = A->getValue();
320	if (!Map.contains('='))
321	D.Diag(diag::err_drv_invalid_argument_to_option)
322	<< Map << A->getOption().getName();
323	else
324	CmdArgs.push_back(Args.MakeArgString("-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(options::OPT_ffile_prefix_map_EQ,
333	options::OPT_fcoverage_prefix_map_EQ)) {
334	StringRef Map = A->getValue();
335	if (!Map.contains('='))
336	D.Diag(diag::err_drv_invalid_argument_to_option)
337	<< Map << A->getOption().getName();
338	else
339	CmdArgs.push_back(Args.MakeArgString("-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(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
350	return;
351
352	CmdArgs.push_back(Elt: "-x");
353	if (Args.hasArg(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(options::OPT_fprofile_generate,
382	options::OPT_fprofile_generate_EQ,
383	options::OPT_fno_profile_generate);
384	if (PGOGenerateArg &&
385	PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
386	PGOGenerateArg = nullptr;
387
388	auto *CSPGOGenerateArg = getLastCSProfileGenerateArg(Args);
389
390	auto *ProfileGenerateArg = Args.getLastArg(
391	options::OPT_fprofile_instr_generate,
392	options::OPT_fprofile_instr_generate_EQ,
393	options::OPT_fno_profile_instr_generate);
394	if (ProfileGenerateArg &&
395	ProfileGenerateArg->getOption().matches(
396	options::OPT_fno_profile_instr_generate))
397	ProfileGenerateArg = nullptr;
398
399	if (PGOGenerateArg && ProfileGenerateArg)
400	D.Diag(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(diag::err_drv_argument_not_allowed_with)
407	<< ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
408
409	if (ProfileGenerateArg && ProfileUseArg)
410	D.Diag(diag::err_drv_argument_not_allowed_with)
411	<< ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
412
413	if (CSPGOGenerateArg && PGOGenerateArg) {
414	D.Diag(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(diag::err_drv_unsupported_opt_for_target)
422	<< ProfileSampleUseArg->getSpelling() << TC.getTriple().str();
423	}
424
425	if (ProfileGenerateArg) {
426	if (ProfileGenerateArg->getOption().matches(
427	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(options::OPT_frtlib_defaultlib,
434	options::OPT_fno_rtlib_defaultlib, 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	options::OPT_fprofile_generate_cold_function_coverage,
443	options::OPT_fprofile_generate_cold_function_coverage_EQ)) {
444	SmallString<128> Path(
445	ColdFuncCoverageArg->getOption().matches(
446	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(options::OPT_ftemporal_profile)) {
465	if (!PGOGenerateArg && !CSPGOGenerateArg)
466	D.Diag(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(options::OPT_frtlib_defaultlib,
486	options::OPT_fno_rtlib_defaultlib, 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	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(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	options::OPT_fprofile_use_EQ) ||
507	ProfileUseArg->getOption().matches(
508	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(options::OPT_ftest_coverage,
519	options::OPT_fno_test_coverage, false) ||
520	Args.hasArg(options::OPT_coverage);
521	bool EmitCovData = TC.needsGCovInstrumentation(Args);
522
523	if (Args.hasFlag(options::OPT_fcoverage_mapping,
524	options::OPT_fno_coverage_mapping, false)) {
525	if (!ProfileGenerateArg)
526	D.Diag(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(options::OPT_fmcdc_coverage, options::OPT_fno_mcdc_coverage,
534	false)) {
535	if (!Args.hasFlag(options::OPT_fcoverage_mapping,
536	options::OPT_fno_coverage_mapping, false))
537	D.Diag(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(options::OPT_ffile_compilation_dir_EQ,
545	options::OPT_fcoverage_compilation_dir_EQ)) {
546	if (A->getOption().matches(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(options::OPT_fprofile_exclude_files_EQ)) {
557	auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);
558	if (!Args.hasArg(options::OPT_coverage))
559	D.Diag(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(options::OPT_fprofile_filter_files_EQ)) {
569	auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);
570	if (!Args.hasArg(options::OPT_coverage))
571	D.Diag(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(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(diag::err_drv_unsupported_option_argument)
585	<< A->getSpelling() << Val;
586	}
587	if (const auto *A = Args.getLastArg(options::OPT_fprofile_continuous)) {
588	if (!PGOGenerateArg && !CSPGOGenerateArg && !ProfileGenerateArg)
589	D.Diag(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	options::OPT_fprofile_instr_generate) ||
609	(ProfileGenerateArg->getOption().matches(
610	options::OPT_fprofile_instr_generate_EQ) &&
611	strlen(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(options::OPT_fprofile_function_groups)) {
619	StringRef Val = A->getValue();
620	if (Val.getAsInteger(0, FunctionGroups) || FunctionGroups < 1)
621	D.Diag(diag::err_drv_invalid_int_value) << A->getAsString(Args) << Val;
622	}
623	if (const auto *A =
624	Args.getLastArg(options::OPT_fprofile_selected_function_group)) {
625	StringRef Val = A->getValue();
626	if (Val.getAsInteger(0, SelectedFunctionGroup) ||
627	SelectedFunctionGroup < 0 || SelectedFunctionGroup >= FunctionGroups)
628	D.Diag(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(options::OPT_fprofile_arcs) ||
643	Args.hasArg(options::OPT_coverage))
644	FProfileDir = Args.getLastArg(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(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(options::OPT__SLASH_Fo)) {
658	CoverageFilename = FinalOutput->getValue();
659	} else if (Arg *FinalOutput = C.getArgs().getLastArg(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(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(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(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(diag::warn_debug_compression_unavailable) << "zstd";
746	}
747	} else {
748	D.Diag(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(diag::warn_drv_pch_ignoring_gch_dir) << Path;
807	return false;
808	}
809
810	if (maybeHasClangPchSignature(D, Path))
811	return true;
812	D.Diag(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(CmdArgs, options::OPT_C);
826	Args.AddLastArg(CmdArgs, options::OPT_CC);
827
828	// Handle dependency file generation.
829	Arg *ArgM = Args.getLastArg(options::OPT_MM);
830	if (!ArgM)
831	ArgM = Args.getLastArg(options::OPT_M);
832	Arg *ArgMD = Args.getLastArg(options::OPT_MMD);
833	if (!ArgMD)
834	ArgMD = Args.getLastArg(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(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(options::OPT_offload_compress);
864	Args.ClaimAllArgs(options::OPT_no_offload_compress);
865	Args.ClaimAllArgs(options::OPT_offload_jobs_EQ);
866	}
867
868	bool HasTarget = false;
869	for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
870	HasTarget = true;
871	A->claim();
872	if (A->getOption().matches(options::OPT_MT)) {
873	A->render(Args, CmdArgs);
874	} else {
875	CmdArgs.push_back("-MT");
876	SmallString<128> Quoted;
877	quoteMakeTarget(A->getValue(), Quoted);
878	CmdArgs.push_back(Args.MakeArgString(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(options::OPT_o, 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(options::OPT_M) ||
907	ArgM->getOption().matches(options::OPT_MD))
908	CmdArgs.push_back(Elt: "-sys-header-deps");
909	if ((isa<PrecompileJobAction>(JA) &&
910	!Args.hasArg(options::OPT_fno_module_file_deps)) ||
911	Args.hasArg(options::OPT_fmodule_file_deps))
912	CmdArgs.push_back(Elt: "-module-file-deps");
913	}
914
915	if (Args.hasArg(options::OPT_MG)) {
916	if (!ArgM || ArgM->getOption().matches(options::OPT_MD) ||
917	ArgM->getOption().matches(options::OPT_MMD))
918	D.Diag(diag::err_drv_mg_requires_m_or_mm);
919	CmdArgs.push_back(Elt: "-MG");
920	}
921
922	Args.AddLastArg(CmdArgs, options::OPT_MP);
923	Args.AddLastArg(CmdArgs, 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(Action::OFK_OpenMP) &&
939	!Args.hasArg(options::OPT_nostdinc) &&
940	!Args.hasArg(options::OPT_nogpuinc) &&
941	getToolChain().getTriple().isGPU()) {
942	if (!Args.hasArg(options::OPT_nobuiltininc)) {
943	// Add openmp_wrappers/* to our system include path. This lets us wrap
944	// standard library headers.
945	SmallString<128> P(D.ResourceDir);
946	llvm::sys::path::append(path&: P, a: "include");
947	llvm::sys::path::append(path&: P, a: "openmp_wrappers");
948	CmdArgs.push_back(Elt: "-internal-isystem");
949	CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
950	}
951
952	CmdArgs.push_back(Elt: "-include");
953	CmdArgs.push_back(Elt: "__clang_openmp_device_functions.h");
954	}
955
956	if (Args.hasArg(options::OPT_foffload_via_llvm)) {
957	// Add llvm_wrappers/* to our system include path. This lets us wrap
958	// standard library headers and other headers.
959	SmallString<128> P(D.ResourceDir);
960	llvm::sys::path::append(path&: P, a: "include", b: "llvm_offload_wrappers");
961	CmdArgs.append(IL: {"-internal-isystem", Args.MakeArgString(Str: P), "-include"});
962	if (JA.isDeviceOffloading(OKind: Action::OFK_OpenMP))
963	CmdArgs.push_back(Elt: "__llvm_offload_device.h");
964	else
965	CmdArgs.push_back(Elt: "__llvm_offload_host.h");
966	}
967
968	// Add -i* options, and automatically translate to
969	// -include-pch/-include-pth for transparent PCH support. It's
970	// wonky, but we include looking for .gch so we can support seamless
971	// replacement into a build system already set up to be generating
972	// .gch files.
973
974	if (getToolChain().getDriver().IsCLMode()) {
975	const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
976	const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
977	if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&
978	JA.getKind() <= Action::AssembleJobClass) {
979	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-building-pch-with-obj"));
980	// -fpch-instantiate-templates is the default when creating
981	// precomp using /Yc
982	if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
983	options::OPT_fno_pch_instantiate_templates, true))
984	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fpch-instantiate-templates"));
985	}
986	if (YcArg || YuArg) {
987	StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();
988	if (!isa<PrecompileJobAction>(Val: JA)) {
989	CmdArgs.push_back(Elt: "-include-pch");
990	CmdArgs.push_back(Elt: Args.MakeArgString(Str: D.GetClPchPath(
991	C, BaseName: !ThroughHeader.empty()
992	? ThroughHeader
993	: llvm::sys::path::filename(path: Inputs[0].getBaseInput()))));
994	}
995
996	if (ThroughHeader.empty()) {
997	CmdArgs.push_back(Elt: Args.MakeArgString(
998	Str: Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));
999	} else {
1000	CmdArgs.push_back(
1001	Elt: Args.MakeArgString(Str: Twine("-pch-through-header=") + ThroughHeader));
1002	}
1003	}
1004	}
1005
1006	bool RenderedImplicitInclude = false;
1007	for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
1008	if (A->getOption().matches(options::OPT_include) &&
1009	D.getProbePrecompiled()) {
1010	// Handling of gcc-style gch precompiled headers.
1011	bool IsFirstImplicitInclude = !RenderedImplicitInclude;
1012	RenderedImplicitInclude = true;
1013
1014	bool FoundPCH = false;
1015	SmallString<128> P(A->getValue());
1016	// We want the files to have a name like foo.h.pch. Add a dummy extension
1017	// so that replace_extension does the right thing.
1018	P += ".dummy";
1019	llvm::sys::path::replace_extension(P, "pch");
1020	if (D.getVFS().exists(P))
1021	FoundPCH = true;
1022
1023	if (!FoundPCH) {
1024	// For GCC compat, probe for a file or directory ending in .gch instead.
1025	llvm::sys::path::replace_extension(P, "gch");
1026	FoundPCH = gchProbe(D, P.str());
1027	}
1028
1029	if (FoundPCH) {
1030	if (IsFirstImplicitInclude) {
1031	A->claim();
1032	CmdArgs.push_back("-include-pch");
1033	CmdArgs.push_back(Args.MakeArgString(P));
1034	continue;
1035	} else {
1036	// Ignore the PCH if not first on command line and emit warning.
1037	D.Diag(diag::warn_drv_pch_not_first_include) << P
1038	<< A->getAsString(Args);
1039	}
1040	}
1041	} else if (A->getOption().matches(options::OPT_isystem_after)) {
1042	// Handling of paths which must come late. These entries are handled by
1043	// the toolchain itself after the resource dir is inserted in the right
1044	// search order.
1045	// Do not claim the argument so that the use of the argument does not
1046	// silently go unnoticed on toolchains which do not honour the option.
1047	continue;
1048	} else if (A->getOption().matches(options::OPT_stdlibxx_isystem)) {
1049	// Translated to -internal-isystem by the driver, no need to pass to cc1.
1050	continue;
1051	} else if (A->getOption().matches(options::OPT_ibuiltininc)) {
1052	// This is used only by the driver. No need to pass to cc1.
1053	continue;
1054	}
1055
1056	// Not translated, render as usual.
1057	A->claim();
1058	A->render(Args, CmdArgs);
1059	}
1060
1061	Args.addAllArgs(CmdArgs,
1062	{options::OPT_D, options::OPT_U, options::OPT_I_Group,
1063	options::OPT_F, options::OPT_embed_dir_EQ});
1064
1065	// Add -Wp, and -Xpreprocessor if using the preprocessor.
1066
1067	// FIXME: There is a very unfortunate problem here, some troubled
1068	// souls abuse -Wp, to pass preprocessor options in gcc syntax. To
1069	// really support that we would have to parse and then translate
1070	// those options. :(
1071	Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
1072	options::OPT_Xpreprocessor);
1073
1074	// -I- is a deprecated GCC feature, reject it.
1075	if (Arg *A = Args.getLastArg(options::OPT_I_))
1076	D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
1077
1078	// If we have a --sysroot, and don't have an explicit -isysroot flag, add an
1079	// -isysroot to the CC1 invocation.
1080	StringRef sysroot = C.getSysRoot();
1081	if (sysroot != "") {
1082	if (!Args.hasArg(options::OPT_isysroot)) {
1083	CmdArgs.push_back(Elt: "-isysroot");
1084	CmdArgs.push_back(Elt: C.getArgs().MakeArgString(Str: sysroot));
1085	}
1086	}
1087
1088	// Parse additional include paths from environment variables.
1089	// FIXME: We should probably sink the logic for handling these from the
1090	// frontend into the driver. It will allow deleting 4 otherwise unused flags.
1091	// CPATH - included following the user specified includes (but prior to
1092	// builtin and standard includes).
1093	addDirectoryList(Args, CmdArgs, ArgName: "-I", EnvVar: "CPATH");
1094	// C_INCLUDE_PATH - system includes enabled when compiling C.
1095	addDirectoryList(Args, CmdArgs, ArgName: "-c-isystem", EnvVar: "C_INCLUDE_PATH");
1096	// CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
1097	addDirectoryList(Args, CmdArgs, ArgName: "-cxx-isystem", EnvVar: "CPLUS_INCLUDE_PATH");
1098	// OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
1099	addDirectoryList(Args, CmdArgs, ArgName: "-objc-isystem", EnvVar: "OBJC_INCLUDE_PATH");
1100	// OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
1101	addDirectoryList(Args, CmdArgs, ArgName: "-objcxx-isystem", EnvVar: "OBJCPLUS_INCLUDE_PATH");
1102
1103	// While adding the include arguments, we also attempt to retrieve the
1104	// arguments of related offloading toolchains or arguments that are specific
1105	// of an offloading programming model.
1106
1107	// Add C++ include arguments, if needed.
1108	if (types::isCXX(Id: Inputs[0].getType())) {
1109	bool HasStdlibxxIsystem = Args.hasArg(options::OPT_stdlibxx_isystem);
1110	forAllAssociatedToolChains(
1111	C, JA, RegularToolChain: getToolChain(),
1112	Work: [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {
1113	HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(DriverArgs: Args, CC1Args&: CmdArgs)
1114	: TC.AddClangCXXStdlibIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
1115	});
1116	}
1117
1118	// If we are compiling for a GPU target we want to override the system headers
1119	// with ones created by the 'libc' project if present.
1120	// TODO: This should be moved to `AddClangSystemIncludeArgs` by passing the
1121	// OffloadKind as an argument.
1122	if (!Args.hasArg(options::OPT_nostdinc) &&
1123	!Args.hasArg(options::OPT_nogpuinc) &&
1124	!Args.hasArg(options::OPT_nobuiltininc)) {
1125	// Without an offloading language we will include these headers directly.
1126	// Offloading languages will instead only use the declarations stored in
1127	// the resource directory at clang/lib/Headers/llvm_libc_wrappers.
1128	if (getToolChain().getTriple().isGPU() &&
1129	C.getActiveOffloadKinds() == Action::OFK_None) {
1130	SmallString<128> P(llvm::sys::path::parent_path(path: D.Dir));
1131	llvm::sys::path::append(path&: P, a: "include");
1132	llvm::sys::path::append(path&: P, a: getToolChain().getTripleString());
1133	CmdArgs.push_back(Elt: "-internal-isystem");
1134	CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
1135	} else if (C.getActiveOffloadKinds() == Action::OFK_OpenMP) {
1136	// TODO: CUDA / HIP include their own headers for some common functions
1137	// implemented here. We'll need to clean those up so they do not conflict.
1138	SmallString<128> P(D.ResourceDir);
1139	llvm::sys::path::append(path&: P, a: "include");
1140	llvm::sys::path::append(path&: P, a: "llvm_libc_wrappers");
1141	CmdArgs.push_back(Elt: "-internal-isystem");
1142	CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
1143	}
1144	}
1145
1146	// Add system include arguments for all targets but IAMCU.
1147	if (!IsIAMCU)
1148	forAllAssociatedToolChains(C, JA, RegularToolChain: getToolChain(),
1149	Work: [&Args, &CmdArgs](const ToolChain &TC) {
1150	TC.AddClangSystemIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
1151	});
1152	else {
1153	// For IAMCU add special include arguments.
1154	getToolChain().AddIAMCUIncludeArgs(DriverArgs: Args, CC1Args&: CmdArgs);
1155	}
1156
1157	addMacroPrefixMapArg(D, Args, CmdArgs);
1158	addCoveragePrefixMapArg(D, Args, CmdArgs);
1159
1160	Args.AddLastArg(CmdArgs, options::OPT_ffile_reproducible,
1161	options::OPT_fno_file_reproducible);
1162
1163	if (const char *Epoch = std::getenv(name: "SOURCE_DATE_EPOCH")) {
1164	CmdArgs.push_back(Elt: "-source-date-epoch");
1165	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Epoch));
1166	}
1167
1168	Args.addOptInFlag(CmdArgs, options::OPT_fdefine_target_os_macros,
1169	options::OPT_fno_define_target_os_macros);
1170	}
1171
1172	// FIXME: Move to target hook.
1173	static bool isSignedCharDefault(const llvm::Triple &Triple) {
1174	switch (Triple.getArch()) {
1175	default:
1176	return true;
1177
1178	case llvm::Triple::aarch64:
1179	case llvm::Triple::aarch64_32:
1180	case llvm::Triple::aarch64_be:
1181	case llvm::Triple::arm:
1182	case llvm::Triple::armeb:
1183	case llvm::Triple::thumb:
1184	case llvm::Triple::thumbeb:
1185	if (Triple.isOSDarwin() || Triple.isOSWindows())
1186	return true;
1187	return false;
1188
1189	case llvm::Triple::ppc:
1190	case llvm::Triple::ppc64:
1191	if (Triple.isOSDarwin())
1192	return true;
1193	return false;
1194
1195	case llvm::Triple::csky:
1196	case llvm::Triple::hexagon:
1197	case llvm::Triple::msp430:
1198	case llvm::Triple::ppcle:
1199	case llvm::Triple::ppc64le:
1200	case llvm::Triple::riscv32:
1201	case llvm::Triple::riscv64:
1202	case llvm::Triple::systemz:
1203	case llvm::Triple::xcore:
1204	case llvm::Triple::xtensa:
1205	return false;
1206	}
1207	}
1208
1209	static bool hasMultipleInvocations(const llvm::Triple &Triple,
1210	const ArgList &Args) {
1211	// Supported only on Darwin where we invoke the compiler multiple times
1212	// followed by an invocation to lipo.
1213	if (!Triple.isOSDarwin())
1214	return false;
1215	// If more than one "-arch <arch>" is specified, we're targeting multiple
1216	// architectures resulting in a fat binary.
1217	return Args.getAllArgValues(options::OPT_arch).size() > 1;
1218	}
1219
1220	static bool checkRemarksOptions(const Driver &D, const ArgList &Args,
1221	const llvm::Triple &Triple) {
1222	// When enabling remarks, we need to error if:
1223	// * The remark file is specified but we're targeting multiple architectures,
1224	// which means more than one remark file is being generated.
1225	bool hasMultipleInvocations = ::hasMultipleInvocations(Triple, Args);
1226	bool hasExplicitOutputFile =
1227	Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1228	if (hasMultipleInvocations && hasExplicitOutputFile) {
1229	D.Diag(diag::err_drv_invalid_output_with_multiple_archs)
1230	<< "-foptimization-record-file";
1231	return false;
1232	}
1233	return true;
1234	}
1235
1236	static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,
1237	const llvm::Triple &Triple,
1238	const InputInfo &Input,
1239	const InputInfo &Output, const JobAction &JA) {
1240	StringRef Format = "yaml";
1241	if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
1242	Format = A->getValue();
1243
1244	CmdArgs.push_back(Elt: "-opt-record-file");
1245
1246	const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
1247	if (A) {
1248	CmdArgs.push_back(Elt: A->getValue());
1249	} else {
1250	bool hasMultipleArchs =
1251	Triple.isOSDarwin() && // Only supported on Darwin platforms.
1252	Args.getAllArgValues(options::OPT_arch).size() > 1;
1253
1254	SmallString<128> F;
1255
1256	if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {
1257	if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))
1258	F = FinalOutput->getValue();
1259	} else {
1260	if (Format != "yaml" && // For YAML, keep the original behavior.
1261	Triple.isOSDarwin() && // Enable this only on darwin, since it's the only platform supporting .dSYM bundles.
1262	Output.isFilename())
1263	F = Output.getFilename();
1264	}
1265
1266	if (F.empty()) {
1267	// Use the input filename.
1268	F = llvm::sys::path::stem(path: Input.getBaseInput());
1269
1270	// If we're compiling for an offload architecture (i.e. a CUDA device),
1271	// we need to make the file name for the device compilation different
1272	// from the host compilation.
1273	if (!JA.isDeviceOffloading(OKind: Action::OFK_None) &&
1274	!JA.isDeviceOffloading(OKind: Action::OFK_Host)) {
1275	llvm::sys::path::replace_extension(path&: F, extension: "");
1276	F += Action::GetOffloadingFileNamePrefix(Kind: JA.getOffloadingDeviceKind(),
1277	NormalizedTriple: Triple.normalize());
1278	F += "-";
1279	F += JA.getOffloadingArch();
1280	}
1281	}
1282
1283	// If we're having more than one "-arch", we should name the files
1284	// differently so that every cc1 invocation writes to a different file.
1285	// We're doing that by appending "-<arch>" with "<arch>" being the arch
1286	// name from the triple.
1287	if (hasMultipleArchs) {
1288	// First, remember the extension.
1289	SmallString<64> OldExtension = llvm::sys::path::extension(path: F);
1290	// then, remove it.
1291	llvm::sys::path::replace_extension(path&: F, extension: "");
1292	// attach -<arch> to it.
1293	F += "-";
1294	F += Triple.getArchName();
1295	// put back the extension.
1296	llvm::sys::path::replace_extension(path&: F, extension: OldExtension);
1297	}
1298
1299	SmallString<32> Extension;
1300	Extension += "opt.";
1301	Extension += Format;
1302
1303	llvm::sys::path::replace_extension(path&: F, extension: Extension);
1304	CmdArgs.push_back(Elt: Args.MakeArgString(Str: F));
1305	}
1306
1307	if (const Arg *A =
1308	Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
1309	CmdArgs.push_back(Elt: "-opt-record-passes");
1310	CmdArgs.push_back(Elt: A->getValue());
1311	}
1312
1313	if (!Format.empty()) {
1314	CmdArgs.push_back(Elt: "-opt-record-format");
1315	CmdArgs.push_back(Elt: Format.data());
1316	}
1317	}
1318
1319	void AddAAPCSVolatileBitfieldArgs(const ArgList &Args, ArgStringList &CmdArgs) {
1320	if (!Args.hasFlag(options::OPT_faapcs_bitfield_width,
1321	options::OPT_fno_aapcs_bitfield_width, true))
1322	CmdArgs.push_back(Elt: "-fno-aapcs-bitfield-width");
1323
1324	if (Args.getLastArg(options::OPT_ForceAAPCSBitfieldLoad))
1325	CmdArgs.push_back(Elt: "-faapcs-bitfield-load");
1326	}
1327
1328	namespace {
1329	void RenderARMABI(const Driver &D, const llvm::Triple &Triple,
1330	const ArgList &Args, ArgStringList &CmdArgs) {
1331	// Select the ABI to use.
1332	// FIXME: Support -meabi.
1333	// FIXME: Parts of this are duplicated in the backend, unify this somehow.
1334	const char *ABIName = nullptr;
1335	if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
1336	ABIName = A->getValue();
1337	} else {
1338	std::string CPU = getCPUName(D, Args, T: Triple, /*FromAs*/ false);
1339	ABIName = llvm::ARM::computeDefaultTargetABI(TT: Triple, CPU).data();
1340	}
1341
1342	CmdArgs.push_back(Elt: "-target-abi");
1343	CmdArgs.push_back(Elt: ABIName);
1344	}
1345
1346	void AddUnalignedAccessWarning(ArgStringList &CmdArgs) {
1347	auto StrictAlignIter =
1348	llvm::find_if(Range: llvm::reverse(C&: CmdArgs), P: [](StringRef Arg) {
1349	return Arg == "+strict-align" || Arg == "-strict-align";
1350	});
1351	if (StrictAlignIter != CmdArgs.rend() &&
1352	StringRef(*StrictAlignIter) == "+strict-align")
1353	CmdArgs.push_back(Elt: "-Wunaligned-access");
1354	}
1355	}
1356
1357	// Each combination of options here forms a signing schema, and in most cases
1358	// each signing schema is its own incompatible ABI. The default values of the
1359	// options represent the default signing schema.
1360	static void handlePAuthABI(const ArgList &DriverArgs, ArgStringList &CC1Args) {
1361	if (!DriverArgs.hasArg(options::OPT_fptrauth_intrinsics,
1362	options::OPT_fno_ptrauth_intrinsics))
1363	CC1Args.push_back(Elt: "-fptrauth-intrinsics");
1364
1365	if (!DriverArgs.hasArg(options::OPT_fptrauth_calls,
1366	options::OPT_fno_ptrauth_calls))
1367	CC1Args.push_back(Elt: "-fptrauth-calls");
1368
1369	if (!DriverArgs.hasArg(options::OPT_fptrauth_returns,
1370	options::OPT_fno_ptrauth_returns))
1371	CC1Args.push_back(Elt: "-fptrauth-returns");
1372
1373	if (!DriverArgs.hasArg(options::OPT_fptrauth_auth_traps,
1374	options::OPT_fno_ptrauth_auth_traps))
1375	CC1Args.push_back(Elt: "-fptrauth-auth-traps");
1376
1377	if (!DriverArgs.hasArg(
1378	options::OPT_fptrauth_vtable_pointer_address_discrimination,
1379	options::OPT_fno_ptrauth_vtable_pointer_address_discrimination))
1380	CC1Args.push_back(Elt: "-fptrauth-vtable-pointer-address-discrimination");
1381
1382	if (!DriverArgs.hasArg(
1383	options::OPT_fptrauth_vtable_pointer_type_discrimination,
1384	options::OPT_fno_ptrauth_vtable_pointer_type_discrimination))
1385	CC1Args.push_back(Elt: "-fptrauth-vtable-pointer-type-discrimination");
1386
1387	if (!DriverArgs.hasArg(options::OPT_fptrauth_indirect_gotos,
1388	options::OPT_fno_ptrauth_indirect_gotos))
1389	CC1Args.push_back(Elt: "-fptrauth-indirect-gotos");
1390
1391	if (!DriverArgs.hasArg(options::OPT_fptrauth_init_fini,
1392	options::OPT_fno_ptrauth_init_fini))
1393	CC1Args.push_back(Elt: "-fptrauth-init-fini");
1394	}
1395
1396	static void CollectARMPACBTIOptions(const ToolChain &TC, const ArgList &Args,
1397	ArgStringList &CmdArgs, bool isAArch64) {
1398	const llvm::Triple &Triple = TC.getEffectiveTriple();
1399	const Arg *A = isAArch64
1400	? Args.getLastArg(options::OPT_msign_return_address_EQ,
1401	options::OPT_mbranch_protection_EQ)
1402	: Args.getLastArg(options::OPT_mbranch_protection_EQ);
1403	if (!A) {
1404	if (Triple.isOSOpenBSD() && isAArch64) {
1405	CmdArgs.push_back(Elt: "-msign-return-address=non-leaf");
1406	CmdArgs.push_back(Elt: "-msign-return-address-key=a_key");
1407	CmdArgs.push_back(Elt: "-mbranch-target-enforce");
1408	}
1409	return;
1410	}
1411
1412	const Driver &D = TC.getDriver();
1413	if (!(isAArch64 || (Triple.isArmT32() && Triple.isArmMClass())))
1414	D.Diag(diag::warn_incompatible_branch_protection_option)
1415	<< Triple.getArchName();
1416
1417	StringRef Scope, Key;
1418	bool IndirectBranches, BranchProtectionPAuthLR, GuardedControlStack;
1419
1420	if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {
1421	Scope = A->getValue();
1422	if (Scope != "none" && Scope != "non-leaf" && Scope != "all")
1423	D.Diag(diag::err_drv_unsupported_option_argument)
1424	<< A->getSpelling() << Scope;
1425	Key = "a_key";
1426	IndirectBranches = Triple.isOSOpenBSD() && isAArch64;
1427	BranchProtectionPAuthLR = false;
1428	GuardedControlStack = false;
1429	} else {
1430	StringRef DiagMsg;
1431	llvm::ARM::ParsedBranchProtection PBP;
1432	bool EnablePAuthLR = false;
1433
1434	// To know if we need to enable PAuth-LR As part of the standard branch
1435	// protection option, it needs to be determined if the feature has been
1436	// activated in the `march` argument. This information is stored within the
1437	// CmdArgs variable and can be found using a search.
1438	if (isAArch64) {
1439	auto isPAuthLR = [](const char *member) {
1440	llvm::AArch64::ExtensionInfo pauthlr_extension =
1441	llvm::AArch64::getExtensionByID(llvm::AArch64::AEK_PAUTHLR);
1442	return pauthlr_extension.PosTargetFeature == member;
1443	};
1444
1445	if (llvm::any_of(Range&: CmdArgs, P: isPAuthLR))
1446	EnablePAuthLR = true;
1447	}
1448	if (!llvm::ARM::parseBranchProtection(A->getValue(), PBP, DiagMsg,
1449	EnablePAuthLR))
1450	D.Diag(diag::err_drv_unsupported_option_argument)
1451	<< A->getSpelling() << DiagMsg;
1452	if (!isAArch64 && PBP.Key == "b_key")
1453	D.Diag(diag::warn_unsupported_branch_protection)
1454	<< "b-key" << A->getAsString(Args);
1455	Scope = PBP.Scope;
1456	Key = PBP.Key;
1457	BranchProtectionPAuthLR = PBP.BranchProtectionPAuthLR;
1458	IndirectBranches = PBP.BranchTargetEnforcement;
1459	GuardedControlStack = PBP.GuardedControlStack;
1460	}
1461
1462	bool HasPtrauthReturns = llvm::any_of(Range&: CmdArgs, P: [](const char *Arg) {
1463	return StringRef(Arg) == "-fptrauth-returns";
1464	});
1465	// GCS is currently untested with ptrauth-returns, but enabling this could be
1466	// allowed in future after testing with a suitable system.
1467	if (HasPtrauthReturns &&
1468	(Scope != "none" || BranchProtectionPAuthLR || GuardedControlStack)) {
1469	if (Triple.getEnvironment() == llvm::Triple::PAuthTest)
1470	D.Diag(diag::err_drv_unsupported_opt_for_target)
1471	<< A->getAsString(Args) << Triple.getTriple();
1472	else
1473	D.Diag(diag::err_drv_incompatible_options)
1474	<< A->getAsString(Args) << "-fptrauth-returns";
1475	}
1476
1477	CmdArgs.push_back(
1478	Elt: Args.MakeArgString(Str: Twine("-msign-return-address=") + Scope));
1479	if (Scope != "none")
1480	CmdArgs.push_back(
1481	Elt: Args.MakeArgString(Str: Twine("-msign-return-address-key=") + Key));
1482	if (BranchProtectionPAuthLR)
1483	CmdArgs.push_back(
1484	Elt: Args.MakeArgString(Str: Twine("-mbranch-protection-pauth-lr")));
1485	if (IndirectBranches)
1486	CmdArgs.push_back(Elt: "-mbranch-target-enforce");
1487
1488	if (GuardedControlStack)
1489	CmdArgs.push_back(Elt: "-mguarded-control-stack");
1490	}
1491
1492	void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
1493	ArgStringList &CmdArgs, bool KernelOrKext) const {
1494	RenderARMABI(D: getToolChain().getDriver(), Triple, Args, CmdArgs);
1495
1496	// Determine floating point ABI from the options & target defaults.
1497	arm::FloatABI ABI = arm::getARMFloatABI(TC: getToolChain(), Args);
1498	if (ABI == arm::FloatABI::Soft) {
1499	// Floating point operations and argument passing are soft.
1500	// FIXME: This changes CPP defines, we need -target-soft-float.
1501	CmdArgs.push_back(Elt: "-msoft-float");
1502	CmdArgs.push_back(Elt: "-mfloat-abi");
1503	CmdArgs.push_back(Elt: "soft");
1504	} else if (ABI == arm::FloatABI::SoftFP) {
1505	// Floating point operations are hard, but argument passing is soft.
1506	CmdArgs.push_back(Elt: "-mfloat-abi");
1507	CmdArgs.push_back(Elt: "soft");
1508	} else {
1509	// Floating point operations and argument passing are hard.
1510	assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
1511	CmdArgs.push_back(Elt: "-mfloat-abi");
1512	CmdArgs.push_back(Elt: "hard");
1513	}
1514
1515	// Forward the -mglobal-merge option for explicit control over the pass.
1516	if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1517	options::OPT_mno_global_merge)) {
1518	CmdArgs.push_back(Elt: "-mllvm");
1519	if (A->getOption().matches(options::OPT_mno_global_merge))
1520	CmdArgs.push_back(Elt: "-arm-global-merge=false");
1521	else
1522	CmdArgs.push_back(Elt: "-arm-global-merge=true");
1523	}
1524
1525	if (!Args.hasFlag(options::OPT_mimplicit_float,
1526	options::OPT_mno_implicit_float, true))
1527	CmdArgs.push_back(Elt: "-no-implicit-float");
1528
1529	if (Args.getLastArg(options::OPT_mcmse))
1530	CmdArgs.push_back(Elt: "-mcmse");
1531
1532	AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1533
1534	// Enable/disable return address signing and indirect branch targets.
1535	CollectARMPACBTIOptions(TC: getToolChain(), Args, CmdArgs, isAArch64: false /*isAArch64*/);
1536
1537	AddUnalignedAccessWarning(CmdArgs);
1538	}
1539
1540	void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,
1541	const ArgList &Args, bool KernelOrKext,
1542	ArgStringList &CmdArgs) const {
1543	const ToolChain &TC = getToolChain();
1544
1545	// Add the target features
1546	getTargetFeatures(D: TC.getDriver(), Triple: EffectiveTriple, Args, CmdArgs, ForAS: false);
1547
1548	// Add target specific flags.
1549	switch (TC.getArch()) {
1550	default:
1551	break;
1552
1553	case llvm::Triple::arm:
1554	case llvm::Triple::armeb:
1555	case llvm::Triple::thumb:
1556	case llvm::Triple::thumbeb:
1557	// Use the effective triple, which takes into account the deployment target.
1558	AddARMTargetArgs(Triple: EffectiveTriple, Args, CmdArgs, KernelOrKext);
1559	break;
1560
1561	case llvm::Triple::aarch64:
1562	case llvm::Triple::aarch64_32:
1563	case llvm::Triple::aarch64_be:
1564	AddAArch64TargetArgs(Args, CmdArgs);
1565	break;
1566
1567	case llvm::Triple::loongarch32:
1568	case llvm::Triple::loongarch64:
1569	AddLoongArchTargetArgs(Args, CmdArgs);
1570	break;
1571
1572	case llvm::Triple::mips:
1573	case llvm::Triple::mipsel:
1574	case llvm::Triple::mips64:
1575	case llvm::Triple::mips64el:
1576	AddMIPSTargetArgs(Args, CmdArgs);
1577	break;
1578
1579	case llvm::Triple::ppc:
1580	case llvm::Triple::ppcle:
1581	case llvm::Triple::ppc64:
1582	case llvm::Triple::ppc64le:
1583	AddPPCTargetArgs(Args, CmdArgs);
1584	break;
1585
1586	case llvm::Triple::riscv32:
1587	case llvm::Triple::riscv64:
1588	AddRISCVTargetArgs(Args, CmdArgs);
1589	break;
1590
1591	case llvm::Triple::sparc:
1592	case llvm::Triple::sparcel:
1593	case llvm::Triple::sparcv9:
1594	AddSparcTargetArgs(Args, CmdArgs);
1595	break;
1596
1597	case llvm::Triple::systemz:
1598	AddSystemZTargetArgs(Args, CmdArgs);
1599	break;
1600
1601	case llvm::Triple::x86:
1602	case llvm::Triple::x86_64:
1603	AddX86TargetArgs(Args, CmdArgs);
1604	break;
1605
1606	case llvm::Triple::lanai:
1607	AddLanaiTargetArgs(Args, CmdArgs);
1608	break;
1609
1610	case llvm::Triple::hexagon:
1611	AddHexagonTargetArgs(Args, CmdArgs);
1612	break;
1613
1614	case llvm::Triple::wasm32:
1615	case llvm::Triple::wasm64:
1616	AddWebAssemblyTargetArgs(Args, CmdArgs);
1617	break;
1618
1619	case llvm::Triple::ve:
1620	AddVETargetArgs(Args, CmdArgs);
1621	break;
1622	}
1623	}
1624
1625	namespace {
1626	void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,
1627	ArgStringList &CmdArgs) {
1628	const char *ABIName = nullptr;
1629	if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
1630	ABIName = A->getValue();
1631	else if (Triple.isOSDarwin())
1632	ABIName = "darwinpcs";
1633	else if (Triple.getEnvironment() == llvm::Triple::PAuthTest)
1634	ABIName = "pauthtest";
1635	else
1636	ABIName = "aapcs";
1637
1638	CmdArgs.push_back(Elt: "-target-abi");
1639	CmdArgs.push_back(Elt: ABIName);
1640	}
1641	}
1642
1643	void Clang::AddAArch64TargetArgs(const ArgList &Args,
1644	ArgStringList &CmdArgs) const {
1645	const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
1646
1647	if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
1648	Args.hasArg(options::OPT_mkernel) ||
1649	Args.hasArg(options::OPT_fapple_kext))
1650	CmdArgs.push_back(Elt: "-disable-red-zone");
1651
1652	if (!Args.hasFlag(options::OPT_mimplicit_float,
1653	options::OPT_mno_implicit_float, true))
1654	CmdArgs.push_back(Elt: "-no-implicit-float");
1655
1656	RenderAArch64ABI(Triple, Args, CmdArgs);
1657
1658	// Forward the -mglobal-merge option for explicit control over the pass.
1659	if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
1660	options::OPT_mno_global_merge)) {
1661	CmdArgs.push_back(Elt: "-mllvm");
1662	if (A->getOption().matches(options::OPT_mno_global_merge))
1663	CmdArgs.push_back(Elt: "-aarch64-enable-global-merge=false");
1664	else
1665	CmdArgs.push_back(Elt: "-aarch64-enable-global-merge=true");
1666	}
1667
1668	// Handle -msve_vector_bits=<bits>
1669	if (Arg *A = Args.getLastArg(options::OPT_msve_vector_bits_EQ)) {
1670	StringRef Val = A->getValue();
1671	const Driver &D = getToolChain().getDriver();
1672	if (Val == "128" || Val == "256" || Val == "512" || Val == "1024" ||
1673	Val == "2048" || Val == "128+" || Val == "256+" || Val == "512+" ||
1674	Val == "1024+" || Val == "2048+") {
1675	unsigned Bits = 0;
1676	if (!Val.consume_back(Suffix: "+")) {
1677	bool Invalid = Val.getAsInteger(Radix: 10, Result&: Bits); (void)Invalid;
1678	assert(!Invalid && "Failed to parse value");
1679	CmdArgs.push_back(
1680	Elt: Args.MakeArgString(Str: "-mvscale-max=" + llvm::Twine(Bits / 128)));
1681	}
1682
1683	bool Invalid = Val.getAsInteger(Radix: 10, Result&: Bits); (void)Invalid;
1684	assert(!Invalid && "Failed to parse value");
1685	CmdArgs.push_back(
1686	Elt: Args.MakeArgString(Str: "-mvscale-min=" + llvm::Twine(Bits / 128)));
1687	// Silently drop requests for vector-length agnostic code as it's implied.
1688	} else if (Val != "scalable")
1689	// Handle the unsupported values passed to msve-vector-bits.
1690	D.Diag(diag::err_drv_unsupported_option_argument)
1691	<< A->getSpelling() << Val;
1692	}
1693
1694	AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);
1695
1696	if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
1697	CmdArgs.push_back(Elt: "-tune-cpu");
1698	if (strcmp(s1: A->getValue(), s2: "native") == 0)
1699	CmdArgs.push_back(Elt: Args.MakeArgString(Str: llvm::sys::getHostCPUName()));
1700	else
1701	CmdArgs.push_back(Elt: A->getValue());
1702	}
1703
1704	AddUnalignedAccessWarning(CmdArgs);
1705
1706	Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_intrinsics,
1707	options::OPT_fno_ptrauth_intrinsics);
1708	Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_calls,
1709	options::OPT_fno_ptrauth_calls);
1710	Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_returns,
1711	options::OPT_fno_ptrauth_returns);
1712	Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_auth_traps,
1713	options::OPT_fno_ptrauth_auth_traps);
1714	Args.addOptInFlag(
1715	CmdArgs, options::OPT_fptrauth_vtable_pointer_address_discrimination,
1716	options::OPT_fno_ptrauth_vtable_pointer_address_discrimination);
1717	Args.addOptInFlag(
1718	CmdArgs, options::OPT_fptrauth_vtable_pointer_type_discrimination,
1719	options::OPT_fno_ptrauth_vtable_pointer_type_discrimination);
1720	Args.addOptInFlag(
1721	CmdArgs, options::OPT_fptrauth_type_info_vtable_pointer_discrimination,
1722	options::OPT_fno_ptrauth_type_info_vtable_pointer_discrimination);
1723	Args.addOptInFlag(
1724	CmdArgs, options::OPT_fptrauth_function_pointer_type_discrimination,
1725	options::OPT_fno_ptrauth_function_pointer_type_discrimination);
1726
1727	Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_indirect_gotos,
1728	options::OPT_fno_ptrauth_indirect_gotos);
1729	Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_init_fini,
1730	options::OPT_fno_ptrauth_init_fini);
1731	Args.addOptInFlag(CmdArgs,
1732	options::OPT_fptrauth_init_fini_address_discrimination,
1733	options::OPT_fno_ptrauth_init_fini_address_discrimination);
1734	Args.addOptInFlag(CmdArgs, options::OPT_faarch64_jump_table_hardening,
1735	options::OPT_fno_aarch64_jump_table_hardening);
1736
1737	if (Triple.getEnvironment() == llvm::Triple::PAuthTest)
1738	handlePAuthABI(DriverArgs: Args, CC1Args&: CmdArgs);
1739
1740	// Enable/disable return address signing and indirect branch targets.
1741	CollectARMPACBTIOptions(TC: getToolChain(), Args, CmdArgs, isAArch64: true /*isAArch64*/);
1742	}
1743
1744	void Clang::AddLoongArchTargetArgs(const ArgList &Args,
1745	ArgStringList &CmdArgs) const {
1746	const llvm::Triple &Triple = getToolChain().getTriple();
1747
1748	CmdArgs.push_back(Elt: "-target-abi");
1749	CmdArgs.push_back(
1750	Elt: loongarch::getLoongArchABI(D: getToolChain().getDriver(), Args, Triple)
1751	.data());
1752
1753	// Handle -mtune.
1754	if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
1755	std::string TuneCPU = A->getValue();
1756	TuneCPU = loongarch::postProcessTargetCPUString(CPU: TuneCPU, Triple);
1757	CmdArgs.push_back(Elt: "-tune-cpu");
1758	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TuneCPU));
1759	}
1760
1761	if (Arg *A = Args.getLastArg(options::OPT_mannotate_tablejump,
1762	options::OPT_mno_annotate_tablejump)) {
1763	if (A->getOption().matches(options::OPT_mannotate_tablejump)) {
1764	CmdArgs.push_back(Elt: "-mllvm");
1765	CmdArgs.push_back(Elt: "-loongarch-annotate-tablejump");
1766	}
1767	}
1768	}
1769
1770	void Clang::AddMIPSTargetArgs(const ArgList &Args,
1771	ArgStringList &CmdArgs) const {
1772	const Driver &D = getToolChain().getDriver();
1773	StringRef CPUName;
1774	StringRef ABIName;
1775	const llvm::Triple &Triple = getToolChain().getTriple();
1776	mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
1777
1778	CmdArgs.push_back(Elt: "-target-abi");
1779	CmdArgs.push_back(Elt: ABIName.data());
1780
1781	mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);
1782	if (ABI == mips::FloatABI::Soft) {
1783	// Floating point operations and argument passing are soft.
1784	CmdArgs.push_back(Elt: "-msoft-float");
1785	CmdArgs.push_back(Elt: "-mfloat-abi");
1786	CmdArgs.push_back(Elt: "soft");
1787	} else {
1788	// Floating point operations and argument passing are hard.
1789	assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
1790	CmdArgs.push_back(Elt: "-mfloat-abi");
1791	CmdArgs.push_back(Elt: "hard");
1792	}
1793
1794	if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
1795	options::OPT_mno_ldc1_sdc1)) {
1796	if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
1797	CmdArgs.push_back(Elt: "-mllvm");
1798	CmdArgs.push_back(Elt: "-mno-ldc1-sdc1");
1799	}
1800	}
1801
1802	if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
1803	options::OPT_mno_check_zero_division)) {
1804	if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
1805	CmdArgs.push_back(Elt: "-mllvm");
1806	CmdArgs.push_back(Elt: "-mno-check-zero-division");
1807	}
1808	}
1809
1810	if (Args.getLastArg(options::OPT_mfix4300)) {
1811	CmdArgs.push_back(Elt: "-mllvm");
1812	CmdArgs.push_back(Elt: "-mfix4300");
1813	}
1814
1815	if (Arg *A = Args.getLastArg(options::OPT_G)) {
1816	StringRef v = A->getValue();
1817	CmdArgs.push_back(Elt: "-mllvm");
1818	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mips-ssection-threshold=" + v));
1819	A->claim();
1820	}
1821
1822	Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);
1823	Arg *ABICalls =
1824	Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);
1825
1826	// -mabicalls is the default for many MIPS environments, even with -fno-pic.
1827	// -mgpopt is the default for static, -fno-pic environments but these two
1828	// options conflict. We want to be certain that -mno-abicalls -mgpopt is
1829	// the only case where -mllvm -mgpopt is passed.
1830	// NOTE: We need a warning here or in the backend to warn when -mgpopt is
1831	// passed explicitly when compiling something with -mabicalls
1832	// (implictly) in affect. Currently the warning is in the backend.
1833	//
1834	// When the ABI in use is N64, we also need to determine the PIC mode that
1835	// is in use, as -fno-pic for N64 implies -mno-abicalls.
1836	bool NoABICalls =
1837	ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);
1838
1839	llvm::Reloc::Model RelocationModel;
1840	unsigned PICLevel;
1841	bool IsPIE;
1842	std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
1843	ParsePICArgs(ToolChain: getToolChain(), Args);
1844
1845	NoABICalls = NoABICalls ||
1846	(RelocationModel == llvm::Reloc::Static && ABIName == "n64");
1847
1848	bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);
1849	// We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.
1850	if (NoABICalls && (!GPOpt || WantGPOpt)) {
1851	CmdArgs.push_back(Elt: "-mllvm");
1852	CmdArgs.push_back(Elt: "-mgpopt");
1853
1854	Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,
1855	options::OPT_mno_local_sdata);
1856	Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,
1857	options::OPT_mno_extern_sdata);
1858	Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,
1859	options::OPT_mno_embedded_data);
1860	if (LocalSData) {
1861	CmdArgs.push_back(Elt: "-mllvm");
1862	if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {
1863	CmdArgs.push_back(Elt: "-mlocal-sdata=1");
1864	} else {
1865	CmdArgs.push_back(Elt: "-mlocal-sdata=0");
1866	}
1867	LocalSData->claim();
1868	}
1869
1870	if (ExternSData) {
1871	CmdArgs.push_back(Elt: "-mllvm");
1872	if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {
1873	CmdArgs.push_back(Elt: "-mextern-sdata=1");
1874	} else {
1875	CmdArgs.push_back(Elt: "-mextern-sdata=0");
1876	}
1877	ExternSData->claim();
1878	}
1879
1880	if (EmbeddedData) {
1881	CmdArgs.push_back(Elt: "-mllvm");
1882	if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {
1883	CmdArgs.push_back(Elt: "-membedded-data=1");
1884	} else {
1885	CmdArgs.push_back(Elt: "-membedded-data=0");
1886	}
1887	EmbeddedData->claim();
1888	}
1889
1890	} else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)
1891	D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);
1892
1893	if (GPOpt)
1894	GPOpt->claim();
1895
1896	if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
1897	StringRef Val = StringRef(A->getValue());
1898	if (mips::hasCompactBranches(CPU&: CPUName)) {
1899	if (Val == "never" || Val == "always" || Val == "optimal") {
1900	CmdArgs.push_back(Elt: "-mllvm");
1901	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mips-compact-branches=" + Val));
1902	} else
1903	D.Diag(diag::err_drv_unsupported_option_argument)
1904	<< A->getSpelling() << Val;
1905	} else
1906	D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
1907	}
1908
1909	if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,
1910	options::OPT_mno_relax_pic_calls)) {
1911	if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {
1912	CmdArgs.push_back(Elt: "-mllvm");
1913	CmdArgs.push_back(Elt: "-mips-jalr-reloc=0");
1914	}
1915	}
1916	}
1917
1918	void Clang::AddPPCTargetArgs(const ArgList &Args,
1919	ArgStringList &CmdArgs) const {
1920	const Driver &D = getToolChain().getDriver();
1921	const llvm::Triple &T = getToolChain().getTriple();
1922	if (Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
1923	CmdArgs.push_back(Elt: "-tune-cpu");
1924	StringRef CPU = llvm::PPC::getNormalizedPPCTuneCPU(T, CPUName: A->getValue());
1925	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPU.str()));
1926	}
1927
1928	// Select the ABI to use.
1929	const char *ABIName = nullptr;
1930	if (T.isOSBinFormatELF()) {
1931	switch (getToolChain().getArch()) {
1932	case llvm::Triple::ppc64: {
1933	if (T.isPPC64ELFv2ABI())
1934	ABIName = "elfv2";
1935	else
1936	ABIName = "elfv1";
1937	break;
1938	}
1939	case llvm::Triple::ppc64le:
1940	ABIName = "elfv2";
1941	break;
1942	default:
1943	break;
1944	}
1945	}
1946
1947	bool IEEELongDouble = getToolChain().defaultToIEEELongDouble();
1948	bool VecExtabi = false;
1949	for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {
1950	StringRef V = A->getValue();
1951	if (V == "ieeelongdouble") {
1952	IEEELongDouble = true;
1953	A->claim();
1954	} else if (V == "ibmlongdouble") {
1955	IEEELongDouble = false;
1956	A->claim();
1957	} else if (V == "vec-default") {
1958	VecExtabi = false;
1959	A->claim();
1960	} else if (V == "vec-extabi") {
1961	VecExtabi = true;
1962	A->claim();
1963	} else if (V == "elfv1") {
1964	ABIName = "elfv1";
1965	A->claim();
1966	} else if (V == "elfv2") {
1967	ABIName = "elfv2";
1968	A->claim();
1969	} else if (V != "altivec")
1970	// The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
1971	// the option if given as we don't have backend support for any targets
1972	// that don't use the altivec abi.
1973	ABIName = A->getValue();
1974	}
1975	if (IEEELongDouble)
1976	CmdArgs.push_back(Elt: "-mabi=ieeelongdouble");
1977	if (VecExtabi) {
1978	if (!T.isOSAIX())
1979	D.Diag(diag::err_drv_unsupported_opt_for_target)
1980	<< "-mabi=vec-extabi" << T.str();
1981	CmdArgs.push_back(Elt: "-mabi=vec-extabi");
1982	}
1983
1984	if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true))
1985	CmdArgs.push_back(Elt: "-disable-red-zone");
1986
1987	ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);
1988	if (FloatABI == ppc::FloatABI::Soft) {
1989	// Floating point operations and argument passing are soft.
1990	CmdArgs.push_back(Elt: "-msoft-float");
1991	CmdArgs.push_back(Elt: "-mfloat-abi");
1992	CmdArgs.push_back(Elt: "soft");
1993	} else {
1994	// Floating point operations and argument passing are hard.
1995	assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
1996	CmdArgs.push_back(Elt: "-mfloat-abi");
1997	CmdArgs.push_back(Elt: "hard");
1998	}
1999
2000	if (ABIName) {
2001	CmdArgs.push_back(Elt: "-target-abi");
2002	CmdArgs.push_back(Elt: ABIName);
2003	}
2004	}
2005
2006	void Clang::AddRISCVTargetArgs(const ArgList &Args,
2007	ArgStringList &CmdArgs) const {
2008	const llvm::Triple &Triple = getToolChain().getTriple();
2009	StringRef ABIName = riscv::getRISCVABI(Args, Triple);
2010
2011	CmdArgs.push_back(Elt: "-target-abi");
2012	CmdArgs.push_back(Elt: ABIName.data());
2013
2014	if (Arg *A = Args.getLastArg(options::OPT_G)) {
2015	CmdArgs.push_back(Elt: "-msmall-data-limit");
2016	CmdArgs.push_back(Elt: A->getValue());
2017	}
2018
2019	if (!Args.hasFlag(options::OPT_mimplicit_float,
2020	options::OPT_mno_implicit_float, true))
2021	CmdArgs.push_back(Elt: "-no-implicit-float");
2022
2023	if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
2024	CmdArgs.push_back(Elt: "-tune-cpu");
2025	if (strcmp(s1: A->getValue(), s2: "native") == 0)
2026	CmdArgs.push_back(Elt: Args.MakeArgString(Str: llvm::sys::getHostCPUName()));
2027	else
2028	CmdArgs.push_back(Elt: A->getValue());
2029	}
2030
2031	// Handle -mrvv-vector-bits=<bits>
2032	if (Arg *A = Args.getLastArg(options::OPT_mrvv_vector_bits_EQ)) {
2033	StringRef Val = A->getValue();
2034	const Driver &D = getToolChain().getDriver();
2035
2036	// Get minimum VLen from march.
2037	unsigned MinVLen = 0;
2038	std::string Arch = riscv::getRISCVArch(Args, Triple);
2039	auto ISAInfo = llvm::RISCVISAInfo::parseArchString(
2040	Arch, /*EnableExperimentalExtensions*/ EnableExperimentalExtension: true);
2041	// Ignore parsing error.
2042	if (!errorToBool(Err: ISAInfo.takeError()))
2043	MinVLen = (*ISAInfo)->getMinVLen();
2044
2045	// If the value is "zvl", use MinVLen from march. Otherwise, try to parse
2046	// as integer as long as we have a MinVLen.
2047	unsigned Bits = 0;
2048	if (Val == "zvl" && MinVLen >= llvm::RISCV::RVVBitsPerBlock) {
2049	Bits = MinVLen;
2050	} else if (!Val.getAsInteger(Radix: 10, Result&: Bits)) {
2051	// Only accept power of 2 values beteen RVVBitsPerBlock and 65536 that
2052	// at least MinVLen.
2053	if (Bits < MinVLen || Bits < llvm::RISCV::RVVBitsPerBlock ||
2054	Bits > 65536 || !llvm::isPowerOf2_32(Value: Bits))
2055	Bits = 0;
2056	}
2057
2058	// If we got a valid value try to use it.
2059	if (Bits != 0) {
2060	unsigned VScaleMin = Bits / llvm::RISCV::RVVBitsPerBlock;
2061	CmdArgs.push_back(
2062	Elt: Args.MakeArgString(Str: "-mvscale-max=" + llvm::Twine(VScaleMin)));
2063	CmdArgs.push_back(
2064	Elt: Args.MakeArgString(Str: "-mvscale-min=" + llvm::Twine(VScaleMin)));
2065	} else if (Val != "scalable") {
2066	// Handle the unsupported values passed to mrvv-vector-bits.
2067	D.Diag(diag::err_drv_unsupported_option_argument)
2068	<< A->getSpelling() << Val;
2069	}
2070	}
2071	}
2072
2073	void Clang::AddSparcTargetArgs(const ArgList &Args,
2074	ArgStringList &CmdArgs) const {
2075	sparc::FloatABI FloatABI =
2076	sparc::getSparcFloatABI(D: getToolChain().getDriver(), Args);
2077
2078	if (FloatABI == sparc::FloatABI::Soft) {
2079	// Floating point operations and argument passing are soft.
2080	CmdArgs.push_back(Elt: "-msoft-float");
2081	CmdArgs.push_back(Elt: "-mfloat-abi");
2082	CmdArgs.push_back(Elt: "soft");
2083	} else {
2084	// Floating point operations and argument passing are hard.
2085	assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
2086	CmdArgs.push_back(Elt: "-mfloat-abi");
2087	CmdArgs.push_back(Elt: "hard");
2088	}
2089
2090	if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
2091	StringRef Name = A->getValue();
2092	std::string TuneCPU;
2093	if (Name == "native")
2094	TuneCPU = std::string(llvm::sys::getHostCPUName());
2095	else
2096	TuneCPU = std::string(Name);
2097
2098	CmdArgs.push_back(Elt: "-tune-cpu");
2099	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TuneCPU));
2100	}
2101	}
2102
2103	void Clang::AddSystemZTargetArgs(const ArgList &Args,
2104	ArgStringList &CmdArgs) const {
2105	if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
2106	CmdArgs.push_back(Elt: "-tune-cpu");
2107	if (strcmp(s1: A->getValue(), s2: "native") == 0)
2108	CmdArgs.push_back(Elt: Args.MakeArgString(Str: llvm::sys::getHostCPUName()));
2109	else
2110	CmdArgs.push_back(Elt: A->getValue());
2111	}
2112
2113	bool HasBackchain =
2114	Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false);
2115	bool HasPackedStack = Args.hasFlag(options::OPT_mpacked_stack,
2116	options::OPT_mno_packed_stack, false);
2117	systemz::FloatABI FloatABI =
2118	systemz::getSystemZFloatABI(D: getToolChain().getDriver(), Args);
2119	bool HasSoftFloat = (FloatABI == systemz::FloatABI::Soft);
2120	if (HasBackchain && HasPackedStack && !HasSoftFloat) {
2121	const Driver &D = getToolChain().getDriver();
2122	D.Diag(diag::err_drv_unsupported_opt)
2123	<< "-mpacked-stack -mbackchain -mhard-float";
2124	}
2125	if (HasBackchain)
2126	CmdArgs.push_back(Elt: "-mbackchain");
2127	if (HasPackedStack)
2128	CmdArgs.push_back(Elt: "-mpacked-stack");
2129	if (HasSoftFloat) {
2130	// Floating point operations and argument passing are soft.
2131	CmdArgs.push_back(Elt: "-msoft-float");
2132	CmdArgs.push_back(Elt: "-mfloat-abi");
2133	CmdArgs.push_back(Elt: "soft");
2134	}
2135	}
2136
2137	void Clang::AddX86TargetArgs(const ArgList &Args,
2138	ArgStringList &CmdArgs) const {
2139	const Driver &D = getToolChain().getDriver();
2140	addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/false);
2141
2142	if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
2143	Args.hasArg(options::OPT_mkernel) ||
2144	Args.hasArg(options::OPT_fapple_kext))
2145	CmdArgs.push_back(Elt: "-disable-red-zone");
2146
2147	if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,
2148	options::OPT_mno_tls_direct_seg_refs, true))
2149	CmdArgs.push_back(Elt: "-mno-tls-direct-seg-refs");
2150
2151	// Default to avoid implicit floating-point for kernel/kext code, but allow
2152	// that to be overridden with -mno-soft-float.
2153	bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
2154	Args.hasArg(options::OPT_fapple_kext));
2155	if (Arg *A = Args.getLastArg(
2156	options::OPT_msoft_float, options::OPT_mno_soft_float,
2157	options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
2158	const Option &O = A->getOption();
2159	NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
2160	O.matches(options::OPT_msoft_float));
2161	}
2162	if (NoImplicitFloat)
2163	CmdArgs.push_back(Elt: "-no-implicit-float");
2164
2165	if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
2166	StringRef Value = A->getValue();
2167	if (Value == "intel" || Value == "att") {
2168	CmdArgs.push_back(Elt: "-mllvm");
2169	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-x86-asm-syntax=" + Value));
2170	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-inline-asm=" + Value));
2171	} else {
2172	D.Diag(diag::err_drv_unsupported_option_argument)
2173	<< A->getSpelling() << Value;
2174	}
2175	} else if (D.IsCLMode()) {
2176	CmdArgs.push_back(Elt: "-mllvm");
2177	CmdArgs.push_back(Elt: "-x86-asm-syntax=intel");
2178	}
2179
2180	if (Arg *A = Args.getLastArg(options::OPT_mskip_rax_setup,
2181	options::OPT_mno_skip_rax_setup))
2182	if (A->getOption().matches(options::OPT_mskip_rax_setup))
2183	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mskip-rax-setup"));
2184
2185	// Set flags to support MCU ABI.
2186	if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
2187	CmdArgs.push_back(Elt: "-mfloat-abi");
2188	CmdArgs.push_back(Elt: "soft");
2189	CmdArgs.push_back(Elt: "-mstack-alignment=4");
2190	}
2191
2192	// Handle -mtune.
2193
2194	// Default to "generic" unless -march is present or targetting the PS4/PS5.
2195	std::string TuneCPU;
2196	if (!Args.hasArg(clang::driver::options::OPT_march_EQ) &&
2197	!getToolChain().getTriple().isPS())
2198	TuneCPU = "generic";
2199
2200	// Override based on -mtune.
2201	if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)) {
2202	StringRef Name = A->getValue();
2203
2204	if (Name == "native") {
2205	Name = llvm::sys::getHostCPUName();
2206	if (!Name.empty())
2207	TuneCPU = std::string(Name);
2208	} else
2209	TuneCPU = std::string(Name);
2210	}
2211
2212	if (!TuneCPU.empty()) {
2213	CmdArgs.push_back(Elt: "-tune-cpu");
2214	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TuneCPU));
2215	}
2216	}
2217
2218	void Clang::AddHexagonTargetArgs(const ArgList &Args,
2219	ArgStringList &CmdArgs) const {
2220	CmdArgs.push_back(Elt: "-mqdsp6-compat");
2221	CmdArgs.push_back(Elt: "-Wreturn-type");
2222
2223	if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
2224	CmdArgs.push_back(Elt: "-mllvm");
2225	CmdArgs.push_back(
2226	Elt: Args.MakeArgString(Str: "-hexagon-small-data-threshold=" + Twine(*G)));
2227	}
2228
2229	if (!Args.hasArg(options::OPT_fno_short_enums))
2230	CmdArgs.push_back(Elt: "-fshort-enums");
2231	if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
2232	CmdArgs.push_back(Elt: "-mllvm");
2233	CmdArgs.push_back(Elt: "-enable-hexagon-ieee-rnd-near");
2234	}
2235	CmdArgs.push_back(Elt: "-mllvm");
2236	CmdArgs.push_back(Elt: "-machine-sink-split=0");
2237	}
2238
2239	void Clang::AddLanaiTargetArgs(const ArgList &Args,
2240	ArgStringList &CmdArgs) const {
2241	if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
2242	StringRef CPUName = A->getValue();
2243
2244	CmdArgs.push_back(Elt: "-target-cpu");
2245	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPUName));
2246	}
2247	if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
2248	StringRef Value = A->getValue();
2249	// Only support mregparm=4 to support old usage. Report error for all other
2250	// cases.
2251	int Mregparm;
2252	if (Value.getAsInteger(Radix: 10, Result&: Mregparm)) {
2253	if (Mregparm != 4) {
2254	getToolChain().getDriver().Diag(
2255	diag::err_drv_unsupported_option_argument)
2256	<< A->getSpelling() << Value;
2257	}
2258	}
2259	}
2260	}
2261
2262	void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
2263	ArgStringList &CmdArgs) const {
2264	// Default to "hidden" visibility.
2265	if (!Args.hasArg(options::OPT_fvisibility_EQ,
2266	options::OPT_fvisibility_ms_compat))
2267	CmdArgs.push_back(Elt: "-fvisibility=hidden");
2268	}
2269
2270	void Clang::AddVETargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const {
2271	// Floating point operations and argument passing are hard.
2272	CmdArgs.push_back(Elt: "-mfloat-abi");
2273	CmdArgs.push_back(Elt: "hard");
2274	}
2275
2276	void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,
2277	StringRef Target, const InputInfo &Output,
2278	const InputInfo &Input, const ArgList &Args) const {
2279	// If this is a dry run, do not create the compilation database file.
2280	if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2281	return;
2282
2283	using llvm::yaml::escape;
2284	const Driver &D = getToolChain().getDriver();
2285
2286	if (!CompilationDatabase) {
2287	std::error_code EC;
2288	auto File = std::make_unique<llvm::raw_fd_ostream>(
2289	args&: Filename, args&: EC,
2290	args: llvm::sys::fs::OF_TextWithCRLF | llvm::sys::fs::OF_Append);
2291	if (EC) {
2292	D.Diag(clang::diag::err_drv_compilationdatabase) << Filename
2293	<< EC.message();
2294	return;
2295	}
2296	CompilationDatabase = std::move(File);
2297	}
2298	auto &CDB = *CompilationDatabase;
2299	auto CWD = D.getVFS().getCurrentWorkingDirectory();
2300	if (!CWD)
2301	CWD = ".";
2302	CDB << "{ \"directory\": \"" << escape(Input: *CWD) << "\"";
2303	CDB << ", \"file\": \"" << escape(Input: Input.getFilename()) << "\"";
2304	if (Output.isFilename())
2305	CDB << ", \"output\": \"" << escape(Input: Output.getFilename()) << "\"";
2306	CDB << ", \"arguments\": [\"" << escape(Input: D.ClangExecutable) << "\"";
2307	SmallString<128> Buf;
2308	Buf = "-x";
2309	Buf += types::getTypeName(Id: Input.getType());
2310	CDB << ", \"" << escape(Input: Buf) << "\"";
2311	if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {
2312	Buf = "--sysroot=";
2313	Buf += D.SysRoot;
2314	CDB << ", \"" << escape(Input: Buf) << "\"";
2315	}
2316	CDB << ", \"" << escape(Input: Input.getFilename()) << "\"";
2317	if (Output.isFilename())
2318	CDB << ", \"-o\", \"" << escape(Input: Output.getFilename()) << "\"";
2319	for (auto &A: Args) {
2320	auto &O = A->getOption();
2321	// Skip language selection, which is positional.
2322	if (O.getID() == options::OPT_x)
2323	continue;
2324	// Skip writing dependency output and the compilation database itself.
2325	if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)
2326	continue;
2327	if (O.getID() == options::OPT_gen_cdb_fragment_path)
2328	continue;
2329	// Skip inputs.
2330	if (O.getKind() == Option::InputClass)
2331	continue;
2332	// Skip output.
2333	if (O.getID() == options::OPT_o)
2334	continue;
2335	// All other arguments are quoted and appended.
2336	ArgStringList ASL;
2337	A->render(Args, Output&: ASL);
2338	for (auto &it: ASL)
2339	CDB << ", \"" << escape(Input: it) << "\"";
2340	}
2341	Buf = "--target=";
2342	Buf += Target;
2343	CDB << ", \"" << escape(Input: Buf) << "\"]},\n";
2344	}
2345
2346	void Clang::DumpCompilationDatabaseFragmentToDir(
2347	StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,
2348	const InputInfo &Input, const llvm::opt::ArgList &Args) const {
2349	// If this is a dry run, do not create the compilation database file.
2350	if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
2351	return;
2352
2353	if (CompilationDatabase)
2354	DumpCompilationDatabase(C, Filename: "", Target, Output, Input, Args);
2355
2356	SmallString<256> Path = Dir;
2357	const auto &Driver = C.getDriver();
2358	Driver.getVFS().makeAbsolute(Path);
2359	auto Err = llvm::sys::fs::create_directory(path: Path, /*IgnoreExisting=*/true);
2360	if (Err) {
2361	Driver.Diag(diag::err_drv_compilationdatabase) << Dir << Err.message();
2362	return;
2363	}
2364
2365	llvm::sys::path::append(
2366	path&: Path,
2367	a: Twine(llvm::sys::path::filename(path: Input.getFilename())) + ".%%%%.json");
2368	int FD;
2369	SmallString<256> TempPath;
2370	Err = llvm::sys::fs::createUniqueFile(Model: Path, ResultFD&: FD, ResultPath&: TempPath,
2371	Flags: llvm::sys::fs::OF_Text);
2372	if (Err) {
2373	Driver.Diag(diag::err_drv_compilationdatabase) << Path << Err.message();
2374	return;
2375	}
2376	CompilationDatabase =
2377	std::make_unique<llvm::raw_fd_ostream>(args&: FD, /*shouldClose=*/args: true);
2378	DumpCompilationDatabase(C, Filename: "", Target, Output, Input, Args);
2379	}
2380
2381	static bool CheckARMImplicitITArg(StringRef Value) {
2382	return Value == "always" || Value == "never" || Value == "arm" ||
2383	Value == "thumb";
2384	}
2385
2386	static void AddARMImplicitITArgs(const ArgList &Args, ArgStringList &CmdArgs,
2387	StringRef Value) {
2388	CmdArgs.push_back(Elt: "-mllvm");
2389	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-arm-implicit-it=" + Value));
2390	}
2391
2392	static void CollectArgsForIntegratedAssembler(Compilation &C,
2393	const ArgList &Args,
2394	ArgStringList &CmdArgs,
2395	const Driver &D) {
2396	// Default to -mno-relax-all.
2397	//
2398	// Note: RISC-V requires an indirect jump for offsets larger than 1MiB. This
2399	// cannot be done by assembler branch relaxation as it needs a free temporary
2400	// register. Because of this, branch relaxation is handled by a MachineIR pass
2401	// before the assembler. Forcing assembler branch relaxation for -O0 makes the
2402	// MachineIR branch relaxation inaccurate and it will miss cases where an
2403	// indirect branch is necessary.
2404	Args.addOptInFlag(CmdArgs, options::OPT_mrelax_all,
2405	options::OPT_mno_relax_all);
2406
2407	// Only default to -mincremental-linker-compatible if we think we are
2408	// targeting the MSVC linker.
2409	bool DefaultIncrementalLinkerCompatible =
2410	C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
2411	if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
2412	options::OPT_mno_incremental_linker_compatible,
2413	DefaultIncrementalLinkerCompatible))
2414	CmdArgs.push_back(Elt: "-mincremental-linker-compatible");
2415
2416	Args.AddLastArg(CmdArgs, options::OPT_femit_dwarf_unwind_EQ);
2417
2418	Args.addOptInFlag(CmdArgs, options::OPT_femit_compact_unwind_non_canonical,
2419	options::OPT_fno_emit_compact_unwind_non_canonical);
2420
2421	// If you add more args here, also add them to the block below that
2422	// starts with "// If CollectArgsForIntegratedAssembler() isn't called below".
2423
2424	// When passing -I arguments to the assembler we sometimes need to
2425	// unconditionally take the next argument. For example, when parsing
2426	// '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
2427	// -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
2428	// arg after parsing the '-I' arg.
2429	bool TakeNextArg = false;
2430
2431	const llvm::Triple &Triple = C.getDefaultToolChain().getTriple();
2432	bool IsELF = Triple.isOSBinFormatELF();
2433	bool Crel = false, ExperimentalCrel = false;
2434	bool ImplicitMapSyms = false;
2435	bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();
2436	bool UseNoExecStack = false;
2437	bool Msa = false;
2438	const char *MipsTargetFeature = nullptr;
2439	llvm::SmallVector<const char *> SparcTargetFeatures;
2440	StringRef ImplicitIt;
2441	for (const Arg *A :
2442	Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler,
2443	options::OPT_mimplicit_it_EQ)) {
2444	A->claim();
2445
2446	if (A->getOption().getID() == options::OPT_mimplicit_it_EQ) {
2447	switch (C.getDefaultToolChain().getArch()) {
2448	case llvm::Triple::arm:
2449	case llvm::Triple::armeb:
2450	case llvm::Triple::thumb:
2451	case llvm::Triple::thumbeb:
2452	// Only store the value; the last value set takes effect.
2453	ImplicitIt = A->getValue();
2454	if (!CheckARMImplicitITArg(ImplicitIt))
2455	D.Diag(diag::err_drv_unsupported_option_argument)
2456	<< A->getSpelling() << ImplicitIt;
2457	continue;
2458	default:
2459	break;
2460	}
2461	}
2462
2463	for (StringRef Value : A->getValues()) {
2464	if (TakeNextArg) {
2465	CmdArgs.push_back(Value.data());
2466	TakeNextArg = false;
2467	continue;
2468	}
2469
2470	if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
2471	Value == "-mbig-obj")
2472	continue; // LLVM handles bigobj automatically
2473
2474	auto Equal = Value.split('=');
2475	auto checkArg = [&](bool ValidTarget,
2476	std::initializer_list<const char *> Set) {
2477	if (!ValidTarget) {
2478	D.Diag(diag::err_drv_unsupported_opt_for_target)
2479	<< (Twine("-Wa,") + Equal.first + "=").str()
2480	<< Triple.getTriple();
2481	} else if (!llvm::is_contained(Set, Equal.second)) {
2482	D.Diag(diag::err_drv_unsupported_option_argument)
2483	<< (Twine("-Wa,") + Equal.first + "=").str() << Equal.second;
2484	}
2485	};
2486	switch (C.getDefaultToolChain().getArch()) {
2487	default:
2488	break;
2489	case llvm::Triple::x86:
2490	case llvm::Triple::x86_64:
2491	if (Equal.first == "-mrelax-relocations" ||
2492	Equal.first == "--mrelax-relocations") {
2493	UseRelaxRelocations = Equal.second == "yes";
2494	checkArg(IsELF, {"yes", "no"});
2495	continue;
2496	}
2497	if (Value == "-msse2avx") {
2498	CmdArgs.push_back("-msse2avx");
2499	continue;
2500	}
2501	break;
2502	case llvm::Triple::wasm32:
2503	case llvm::Triple::wasm64:
2504	if (Value == "--no-type-check") {
2505	CmdArgs.push_back("-mno-type-check");
2506	continue;
2507	}
2508	break;
2509	case llvm::Triple::thumb:
2510	case llvm::Triple::thumbeb:
2511	case llvm::Triple::arm:
2512	case llvm::Triple::armeb:
2513	if (Equal.first == "-mimplicit-it") {
2514	// Only store the value; the last value set takes effect.
2515	ImplicitIt = Equal.second;
2516	checkArg(true, {"always", "never", "arm", "thumb"});
2517	continue;
2518	}
2519	if (Value == "-mthumb")
2520	// -mthumb has already been processed in ComputeLLVMTriple()
2521	// recognize but skip over here.
2522	continue;
2523	break;
2524	case llvm::Triple::aarch64:
2525	case llvm::Triple::aarch64_be:
2526	case llvm::Triple::aarch64_32:
2527	if (Equal.first == "-mmapsyms") {
2528	ImplicitMapSyms = Equal.second == "implicit";
2529	checkArg(IsELF, {"default", "implicit"});
2530	continue;
2531	}
2532	break;
2533	case llvm::Triple::mips:
2534	case llvm::Triple::mipsel:
2535	case llvm::Triple::mips64:
2536	case llvm::Triple::mips64el:
2537	if (Value == "--trap") {
2538	CmdArgs.push_back("-target-feature");
2539	CmdArgs.push_back("+use-tcc-in-div");
2540	continue;
2541	}
2542	if (Value == "--break") {
2543	CmdArgs.push_back("-target-feature");
2544	CmdArgs.push_back("-use-tcc-in-div");
2545	continue;
2546	}
2547	if (Value.starts_with("-msoft-float")) {
2548	CmdArgs.push_back("-target-feature");
2549	CmdArgs.push_back("+soft-float");
2550	continue;
2551	}
2552	if (Value.starts_with("-mhard-float")) {
2553	CmdArgs.push_back("-target-feature");
2554	CmdArgs.push_back("-soft-float");
2555	continue;
2556	}
2557	if (Value == "-mmsa") {
2558	Msa = true;
2559	continue;
2560	}
2561	if (Value == "-mno-msa") {
2562	Msa = false;
2563	continue;
2564	}
2565	MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
2566	.Case("-mips1", "+mips1")
2567	.Case("-mips2", "+mips2")
2568	.Case("-mips3", "+mips3")
2569	.Case("-mips4", "+mips4")
2570	.Case("-mips5", "+mips5")
2571	.Case("-mips32", "+mips32")
2572	.Case("-mips32r2", "+mips32r2")
2573	.Case("-mips32r3", "+mips32r3")
2574	.Case("-mips32r5", "+mips32r5")
2575	.Case("-mips32r6", "+mips32r6")
2576	.Case("-mips64", "+mips64")
2577	.Case("-mips64r2", "+mips64r2")
2578	.Case("-mips64r3", "+mips64r3")
2579	.Case("-mips64r5", "+mips64r5")
2580	.Case("-mips64r6", "+mips64r6")
2581	.Default(nullptr);
2582	if (MipsTargetFeature)
2583	continue;
2584	break;
2585
2586	case llvm::Triple::sparc:
2587	case llvm::Triple::sparcel:
2588	case llvm::Triple::sparcv9:
2589	if (Value == "--undeclared-regs") {
2590	// LLVM already allows undeclared use of G registers, so this option
2591	// becomes a no-op. This solely exists for GNU compatibility.
2592	// TODO implement --no-undeclared-regs
2593	continue;
2594	}
2595	SparcTargetFeatures =
2596	llvm::StringSwitch<llvm::SmallVector<const char *>>(Value)
2597	.Case("-Av8", {"-v8plus"})
2598	.Case("-Av8plus", {"+v8plus", "+v9"})
2599	.Case("-Av8plusa", {"+v8plus", "+v9", "+vis"})
2600	.Case("-Av8plusb", {"+v8plus", "+v9", "+vis", "+vis2"})
2601	.Case("-Av8plusd", {"+v8plus", "+v9", "+vis", "+vis2", "+vis3"})
2602	.Case("-Av9", {"+v9"})
2603	.Case("-Av9a", {"+v9", "+vis"})
2604	.Case("-Av9b", {"+v9", "+vis", "+vis2"})
2605	.Case("-Av9d", {"+v9", "+vis", "+vis2", "+vis3"})
2606	.Default({});
2607	if (!SparcTargetFeatures.empty())
2608	continue;
2609	break;
2610	}
2611
2612	if (Value == "-force_cpusubtype_ALL") {
2613	// Do nothing, this is the default and we don't support anything else.
2614	} else if (Value == "-L") {
2615	CmdArgs.push_back("-msave-temp-labels");
2616	} else if (Value == "--fatal-warnings") {
2617	CmdArgs.push_back("-massembler-fatal-warnings");
2618	} else if (Value == "--no-warn" || Value == "-W") {
2619	CmdArgs.push_back("-massembler-no-warn");
2620	} else if (Value == "--noexecstack") {
2621	UseNoExecStack = true;
2622	} else if (Value.starts_with("-compress-debug-sections") ||
2623	Value.starts_with("--compress-debug-sections") ||
2624	Value == "-nocompress-debug-sections" ||
2625	Value == "--nocompress-debug-sections") {
2626	CmdArgs.push_back(Value.data());
2627	} else if (Value == "--crel") {
2628	Crel = true;
2629	} else if (Value == "--no-crel") {
2630	Crel = false;
2631	} else if (Value == "--allow-experimental-crel") {
2632	ExperimentalCrel = true;
2633	} else if (Value.starts_with("-I")) {
2634	CmdArgs.push_back(Value.data());
2635	// We need to consume the next argument if the current arg is a plain
2636	// -I. The next arg will be the include directory.
2637	if (Value == "-I")
2638	TakeNextArg = true;
2639	} else if (Value.starts_with("-gdwarf-")) {
2640	// "-gdwarf-N" options are not cc1as options.
2641	unsigned DwarfVersion = DwarfVersionNum(Value);
2642	if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
2643	CmdArgs.push_back(Value.data());
2644	} else {
2645	RenderDebugEnablingArgs(Args, CmdArgs,
2646	llvm::codegenoptions::DebugInfoConstructor,
2647	DwarfVersion, llvm::DebuggerKind::Default);
2648	}
2649	} else if (Value.starts_with("-mcpu") || Value.starts_with("-mfpu") ||
2650	Value.starts_with("-mhwdiv") || Value.starts_with("-march")) {
2651	// Do nothing, we'll validate it later.
2652	} else if (Value == "-defsym" || Value == "--defsym") {
2653	if (A->getNumValues() != 2) {
2654	D.Diag(diag::err_drv_defsym_invalid_format) << Value;
2655	break;
2656	}
2657	const char *S = A->getValue(1);
2658	auto Pair = StringRef(S).split('=');
2659	auto Sym = Pair.first;
2660	auto SVal = Pair.second;
2661
2662	if (Sym.empty() || SVal.empty()) {
2663	D.Diag(diag::err_drv_defsym_invalid_format) << S;
2664	break;
2665	}
2666	int64_t IVal;
2667	if (SVal.getAsInteger(0, IVal)) {
2668	D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;
2669	break;
2670	}
2671	CmdArgs.push_back("--defsym");
2672	TakeNextArg = true;
2673	} else if (Value == "-fdebug-compilation-dir") {
2674	CmdArgs.push_back("-fdebug-compilation-dir");
2675	TakeNextArg = true;
2676	} else if (Value.consume_front("-fdebug-compilation-dir=")) {
2677	// The flag is a -Wa / -Xassembler argument and Options doesn't
2678	// parse the argument, so this isn't automatically aliased to
2679	// -fdebug-compilation-dir (without '=') here.
2680	CmdArgs.push_back("-fdebug-compilation-dir");
2681	CmdArgs.push_back(Value.data());
2682	} else if (Value == "--version") {
2683	D.PrintVersion(C, llvm::outs());
2684	} else {
2685	D.Diag(diag::err_drv_unsupported_option_argument)
2686	<< A->getSpelling() << Value;
2687	}
2688	}
2689	}
2690	if (ImplicitIt.size())
2691	AddARMImplicitITArgs(Args, CmdArgs, Value: ImplicitIt);
2692	if (Crel) {
2693	if (!ExperimentalCrel)
2694	D.Diag(diag::err_drv_experimental_crel);
2695	if (Triple.isOSBinFormatELF() && !Triple.isMIPS()) {
2696	CmdArgs.push_back(Elt: "--crel");
2697	} else {
2698	D.Diag(diag::err_drv_unsupported_opt_for_target)
2699	<< "-Wa,--crel" << D.getTargetTriple();
2700	}
2701	}
2702	if (ImplicitMapSyms)
2703	CmdArgs.push_back(Elt: "-mmapsyms=implicit");
2704	if (Msa)
2705	CmdArgs.push_back(Elt: "-mmsa");
2706	if (!UseRelaxRelocations)
2707	CmdArgs.push_back(Elt: "-mrelax-relocations=no");
2708	if (UseNoExecStack)
2709	CmdArgs.push_back(Elt: "-mnoexecstack");
2710	if (MipsTargetFeature != nullptr) {
2711	CmdArgs.push_back(Elt: "-target-feature");
2712	CmdArgs.push_back(Elt: MipsTargetFeature);
2713	}
2714
2715	// Those OSes default to enabling VIS on 64-bit SPARC.
2716	// See also the corresponding code for external assemblers in
2717	// sparc::getSparcAsmModeForCPU().
2718	bool IsSparcV9ATarget =
2719	(C.getDefaultToolChain().getArch() == llvm::Triple::sparcv9) &&
2720	(Triple.isOSLinux() || Triple.isOSFreeBSD() || Triple.isOSOpenBSD());
2721	if (IsSparcV9ATarget && SparcTargetFeatures.empty()) {
2722	CmdArgs.push_back(Elt: "-target-feature");
2723	CmdArgs.push_back(Elt: "+vis");
2724	}
2725	for (const char *Feature : SparcTargetFeatures) {
2726	CmdArgs.push_back(Elt: "-target-feature");
2727	CmdArgs.push_back(Elt: Feature);
2728	}
2729
2730	// forward -fembed-bitcode to assmebler
2731	if (C.getDriver().embedBitcodeEnabled() ||
2732	C.getDriver().embedBitcodeMarkerOnly())
2733	Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
2734
2735	if (const char *AsSecureLogFile = getenv(name: "AS_SECURE_LOG_FILE")) {
2736	CmdArgs.push_back(Elt: "-as-secure-log-file");
2737	CmdArgs.push_back(Elt: Args.MakeArgString(Str: AsSecureLogFile));
2738	}
2739	}
2740
2741	static std::string ComplexRangeKindToStr(LangOptions::ComplexRangeKind Range) {
2742	switch (Range) {
2743	case LangOptions::ComplexRangeKind::CX_Full:
2744	return "full";
2745	break;
2746	case LangOptions::ComplexRangeKind::CX_Basic:
2747	return "basic";
2748	break;
2749	case LangOptions::ComplexRangeKind::CX_Improved:
2750	return "improved";
2751	break;
2752	case LangOptions::ComplexRangeKind::CX_Promoted:
2753	return "promoted";
2754	break;
2755	default:
2756	return "";
2757	}
2758	}
2759
2760	static std::string ComplexArithmeticStr(LangOptions::ComplexRangeKind Range) {
2761	return (Range == LangOptions::ComplexRangeKind::CX_None)
2762	? ""
2763	: "-fcomplex-arithmetic=" + ComplexRangeKindToStr(Range);
2764	}
2765
2766	static void EmitComplexRangeDiag(const Driver &D, std::string str1,
2767	std::string str2) {
2768	if (str1 != str2 && !str2.empty() && !str1.empty()) {
2769	D.Diag(clang::diag::warn_drv_overriding_option) << str1 << str2;
2770	}
2771	}
2772
2773	static std::string
2774	RenderComplexRangeOption(LangOptions::ComplexRangeKind Range) {
2775	std::string ComplexRangeStr = ComplexRangeKindToStr(Range);
2776	if (!ComplexRangeStr.empty())
2777	return "-complex-range=" + ComplexRangeStr;
2778	return ComplexRangeStr;
2779	}
2780
2781	static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
2782	bool OFastEnabled, const ArgList &Args,
2783	ArgStringList &CmdArgs,
2784	const JobAction &JA) {
2785	// List of veclibs which when used with -fveclib imply -fno-math-errno.
2786	constexpr std::array VecLibImpliesNoMathErrno{llvm::StringLiteral("ArmPL"),
2787	llvm::StringLiteral("SLEEF")};
2788	bool NoMathErrnoWasImpliedByVecLib = false;
2789	const Arg *VecLibArg = nullptr;
2790	// Track the arg (if any) that enabled errno after -fveclib for diagnostics.
2791	const Arg *ArgThatEnabledMathErrnoAfterVecLib = nullptr;
2792
2793	// Handle various floating point optimization flags, mapping them to the
2794	// appropriate LLVM code generation flags. This is complicated by several
2795	// "umbrella" flags, so we do this by stepping through the flags incrementally
2796	// adjusting what we think is enabled/disabled, then at the end setting the
2797	// LLVM flags based on the final state.
2798	bool HonorINFs = true;
2799	bool HonorNaNs = true;
2800	bool ApproxFunc = false;
2801	// -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
2802	bool MathErrno = TC.IsMathErrnoDefault();
2803	bool AssociativeMath = false;
2804	bool ReciprocalMath = false;
2805	bool SignedZeros = true;
2806	bool TrappingMath = false; // Implemented via -ffp-exception-behavior
2807	bool TrappingMathPresent = false; // Is trapping-math in args, and not
2808	// overriden by ffp-exception-behavior?
2809	bool RoundingFPMath = false;
2810	// -ffp-model values: strict, fast, precise
2811	StringRef FPModel = "";
2812	// -ffp-exception-behavior options: strict, maytrap, ignore
2813	StringRef FPExceptionBehavior = "";
2814	// -ffp-eval-method options: double, extended, source
2815	StringRef FPEvalMethod = "";
2816	llvm::DenormalMode DenormalFPMath =
2817	TC.getDefaultDenormalModeForType(DriverArgs: Args, JA);
2818	llvm::DenormalMode DenormalFP32Math =
2819	TC.getDefaultDenormalModeForType(DriverArgs: Args, JA, FPType: &llvm::APFloat::IEEEsingle());
2820
2821	// CUDA and HIP don't rely on the frontend to pass an ffp-contract option.
2822	// If one wasn't given by the user, don't pass it here.
2823	StringRef FPContract;
2824	StringRef LastSeenFfpContractOption;
2825	StringRef LastFpContractOverrideOption;
2826	bool SeenUnsafeMathModeOption = false;
2827	if (!JA.isDeviceOffloading(OKind: Action::OFK_Cuda) &&
2828	!JA.isOffloading(OKind: Action::OFK_HIP))
2829	FPContract = "on";
2830	bool StrictFPModel = false;
2831	StringRef Float16ExcessPrecision = "";
2832	StringRef BFloat16ExcessPrecision = "";
2833	LangOptions::ComplexRangeKind Range = LangOptions::ComplexRangeKind::CX_None;
2834	std::string ComplexRangeStr = "";
2835	std::string GccRangeComplexOption = "";
2836
2837	auto setComplexRange = [&](LangOptions::ComplexRangeKind NewRange) {
2838	// Warn if user expects to perform full implementation of complex
2839	// multiplication or division in the presence of nnan or ninf flags.
2840	if (Range != NewRange)
2841	EmitComplexRangeDiag(D,
2842	str1: !GccRangeComplexOption.empty()
2843	? GccRangeComplexOption
2844	: ComplexArithmeticStr(Range),
2845	str2: ComplexArithmeticStr(Range: NewRange));
2846	Range = NewRange;
2847	};
2848
2849	// Lambda to set fast-math options. This is also used by -ffp-model=fast
2850	auto applyFastMath = [&](bool Aggressive) {
2851	if (Aggressive) {
2852	HonorINFs = false;
2853	HonorNaNs = false;
2854	setComplexRange(LangOptions::ComplexRangeKind::CX_Basic);
2855	} else {
2856	HonorINFs = true;
2857	HonorNaNs = true;
2858	setComplexRange(LangOptions::ComplexRangeKind::CX_Promoted);
2859	}
2860	MathErrno = false;
2861	AssociativeMath = true;
2862	ReciprocalMath = true;
2863	ApproxFunc = true;
2864	SignedZeros = false;
2865	TrappingMath = false;
2866	RoundingFPMath = false;
2867	FPExceptionBehavior = "";
2868	FPContract = "fast";
2869	SeenUnsafeMathModeOption = true;
2870	};
2871
2872	// Lambda to consolidate common handling for fp-contract
2873	auto restoreFPContractState = [&]() {
2874	// CUDA and HIP don't rely on the frontend to pass an ffp-contract option.
2875	// For other targets, if the state has been changed by one of the
2876	// unsafe-math umbrella options a subsequent -fno-fast-math or
2877	// -fno-unsafe-math-optimizations option reverts to the last value seen for
2878	// the -ffp-contract option or "on" if we have not seen the -ffp-contract
2879	// option. If we have not seen an unsafe-math option or -ffp-contract,
2880	// we leave the FPContract state unchanged.
2881	if (!JA.isDeviceOffloading(OKind: Action::OFK_Cuda) &&
2882	!JA.isOffloading(OKind: Action::OFK_HIP)) {
2883	if (LastSeenFfpContractOption != "")
2884	FPContract = LastSeenFfpContractOption;
2885	else if (SeenUnsafeMathModeOption)
2886	FPContract = "on";
2887	}
2888	// In this case, we're reverting to the last explicit fp-contract option
2889	// or the platform default
2890	LastFpContractOverrideOption = "";
2891	};
2892
2893	if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
2894	CmdArgs.push_back(Elt: "-mlimit-float-precision");
2895	CmdArgs.push_back(Elt: A->getValue());
2896	}
2897
2898	for (const Arg *A : Args) {
2899	auto CheckMathErrnoForVecLib =
2900	llvm::make_scope_exit(F: [&, MathErrnoBeforeArg = MathErrno] {
2901	if (NoMathErrnoWasImpliedByVecLib && !MathErrnoBeforeArg && MathErrno)
2902	ArgThatEnabledMathErrnoAfterVecLib = A;
2903	});
2904
2905	switch (A->getOption().getID()) {
2906	// If this isn't an FP option skip the claim below
2907	default: continue;
2908
2909	case options::OPT_fcx_limited_range:
2910	if (GccRangeComplexOption.empty()) {
2911	if (Range != LangOptions::ComplexRangeKind::CX_Basic)
2912	EmitComplexRangeDiag(D, str1: RenderComplexRangeOption(Range),
2913	str2: "-fcx-limited-range");
2914	} else {
2915	if (GccRangeComplexOption != "-fno-cx-limited-range")
2916	EmitComplexRangeDiag(D, str1: GccRangeComplexOption, str2: "-fcx-limited-range");
2917	}
2918	GccRangeComplexOption = "-fcx-limited-range";
2919	Range = LangOptions::ComplexRangeKind::CX_Basic;
2920	break;
2921	case options::OPT_fno_cx_limited_range:
2922	if (GccRangeComplexOption.empty()) {
2923	EmitComplexRangeDiag(D, str1: RenderComplexRangeOption(Range),
2924	str2: "-fno-cx-limited-range");
2925	} else {
2926	if (GccRangeComplexOption != "-fcx-limited-range" &&
2927	GccRangeComplexOption != "-fno-cx-fortran-rules")
2928	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2929	str2: "-fno-cx-limited-range");
2930	}
2931	GccRangeComplexOption = "-fno-cx-limited-range";
2932	Range = LangOptions::ComplexRangeKind::CX_Full;
2933	break;
2934	case options::OPT_fcx_fortran_rules:
2935	if (GccRangeComplexOption.empty())
2936	EmitComplexRangeDiag(D, str1: RenderComplexRangeOption(Range),
2937	str2: "-fcx-fortran-rules");
2938	else
2939	EmitComplexRangeDiag(D, str1: GccRangeComplexOption, str2: "-fcx-fortran-rules");
2940	GccRangeComplexOption = "-fcx-fortran-rules";
2941	Range = LangOptions::ComplexRangeKind::CX_Improved;
2942	break;
2943	case options::OPT_fno_cx_fortran_rules:
2944	if (GccRangeComplexOption.empty()) {
2945	EmitComplexRangeDiag(D, str1: RenderComplexRangeOption(Range),
2946	str2: "-fno-cx-fortran-rules");
2947	} else {
2948	if (GccRangeComplexOption != "-fno-cx-limited-range")
2949	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2950	str2: "-fno-cx-fortran-rules");
2951	}
2952	GccRangeComplexOption = "-fno-cx-fortran-rules";
2953	Range = LangOptions::ComplexRangeKind::CX_Full;
2954	break;
2955	case options::OPT_fcomplex_arithmetic_EQ: {
2956	LangOptions::ComplexRangeKind RangeVal;
2957	StringRef Val = A->getValue();
2958	if (Val == "full")
2959	RangeVal = LangOptions::ComplexRangeKind::CX_Full;
2960	else if (Val == "improved")
2961	RangeVal = LangOptions::ComplexRangeKind::CX_Improved;
2962	else if (Val == "promoted")
2963	RangeVal = LangOptions::ComplexRangeKind::CX_Promoted;
2964	else if (Val == "basic")
2965	RangeVal = LangOptions::ComplexRangeKind::CX_Basic;
2966	else {
2967	D.Diag(diag::err_drv_unsupported_option_argument)
2968	<< A->getSpelling() << Val;
2969	break;
2970	}
2971	if (!GccRangeComplexOption.empty()) {
2972	if (GccRangeComplexOption != "-fcx-limited-range") {
2973	if (GccRangeComplexOption != "-fcx-fortran-rules") {
2974	if (RangeVal != LangOptions::ComplexRangeKind::CX_Improved)
2975	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2976	str2: ComplexArithmeticStr(Range: RangeVal));
2977	} else {
2978	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2979	str2: ComplexArithmeticStr(Range: RangeVal));
2980	}
2981	} else {
2982	if (RangeVal != LangOptions::ComplexRangeKind::CX_Basic)
2983	EmitComplexRangeDiag(D, str1: GccRangeComplexOption,
2984	str2: ComplexArithmeticStr(Range: RangeVal));
2985	}
2986	}
2987	Range = RangeVal;
2988	break;
2989	}
2990	case options::OPT_ffp_model_EQ: {
2991	// If -ffp-model= is seen, reset to fno-fast-math
2992	HonorINFs = true;
2993	HonorNaNs = true;
2994	ApproxFunc = false;
2995	// Turning *off* -ffast-math restores the toolchain default.
2996	MathErrno = TC.IsMathErrnoDefault();
2997	AssociativeMath = false;
2998	ReciprocalMath = false;
2999	SignedZeros = true;
3000
3001	StringRef Val = A->getValue();
3002	if (OFastEnabled && Val != "aggressive") {
3003	// Only -ffp-model=aggressive is compatible with -OFast, ignore.
3004	D.Diag(clang::diag::warn_drv_overriding_option)
3005	<< Args.MakeArgString("-ffp-model=" + Val) << "-Ofast";
3006	break;
3007	}
3008	StrictFPModel = false;
3009	if (!FPModel.empty() && FPModel != Val)
3010	D.Diag(clang::diag::warn_drv_overriding_option)
3011	<< Args.MakeArgString("-ffp-model=" + FPModel)
3012	<< Args.MakeArgString("-ffp-model=" + Val);
3013	if (Val == "fast") {
3014	FPModel = Val;
3015	applyFastMath(false);
3016	// applyFastMath sets fp-contract="fast"
3017	LastFpContractOverrideOption = "-ffp-model=fast";
3018	} else if (Val == "aggressive") {
3019	FPModel = Val;
3020	applyFastMath(true);
3021	// applyFastMath sets fp-contract="fast"
3022	LastFpContractOverrideOption = "-ffp-model=aggressive";
3023	} else if (Val == "precise") {
3024	FPModel = Val;
3025	FPContract = "on";
3026	LastFpContractOverrideOption = "-ffp-model=precise";
3027	setComplexRange(LangOptions::ComplexRangeKind::CX_Full);
3028	} else if (Val == "strict") {
3029	StrictFPModel = true;
3030	FPExceptionBehavior = "strict";
3031	FPModel = Val;
3032	FPContract = "off";
3033	LastFpContractOverrideOption = "-ffp-model=strict";
3034	TrappingMath = true;
3035	RoundingFPMath = true;
3036	setComplexRange(LangOptions::ComplexRangeKind::CX_Full);
3037	} else
3038	D.Diag(diag::err_drv_unsupported_option_argument)
3039	<< A->getSpelling() << Val;
3040	break;
3041	}
3042
3043	// Options controlling individual features
3044	case options::OPT_fhonor_infinities: HonorINFs = true; break;
3045	case options::OPT_fno_honor_infinities: HonorINFs = false; break;
3046	case options::OPT_fhonor_nans: HonorNaNs = true; break;
3047	case options::OPT_fno_honor_nans: HonorNaNs = false; break;
3048	case options::OPT_fapprox_func: ApproxFunc = true; break;
3049	case options::OPT_fno_approx_func: ApproxFunc = false; break;
3050	case options::OPT_fmath_errno: MathErrno = true; break;
3051	case options::OPT_fno_math_errno: MathErrno = false; break;
3052	case options::OPT_fassociative_math: AssociativeMath = true; break;
3053	case options::OPT_fno_associative_math: AssociativeMath = false; break;
3054	case options::OPT_freciprocal_math: ReciprocalMath = true; break;
3055	case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;
3056	case options::OPT_fsigned_zeros: SignedZeros = true; break;
3057	case options::OPT_fno_signed_zeros: SignedZeros = false; break;
3058	case options::OPT_ftrapping_math:
3059	if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
3060	FPExceptionBehavior != "strict")
3061	// Warn that previous value of option is overridden.
3062	D.Diag(clang::diag::warn_drv_overriding_option)
3063	<< Args.MakeArgString("-ffp-exception-behavior=" +
3064	FPExceptionBehavior)
3065	<< "-ftrapping-math";
3066	TrappingMath = true;
3067	TrappingMathPresent = true;
3068	FPExceptionBehavior = "strict";
3069	break;
3070	case options::OPT_fveclib:
3071	VecLibArg = A;
3072	NoMathErrnoWasImpliedByVecLib =
3073	llvm::is_contained(Range: VecLibImpliesNoMathErrno, Element: A->getValue());
3074	if (NoMathErrnoWasImpliedByVecLib)
3075	MathErrno = false;
3076	break;
3077	case options::OPT_fno_trapping_math:
3078	if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
3079	FPExceptionBehavior != "ignore")
3080	// Warn that previous value of option is overridden.
3081	D.Diag(clang::diag::warn_drv_overriding_option)
3082	<< Args.MakeArgString("-ffp-exception-behavior=" +
3083	FPExceptionBehavior)
3084	<< "-fno-trapping-math";
3085	TrappingMath = false;
3086	TrappingMathPresent = true;
3087	FPExceptionBehavior = "ignore";
3088	break;
3089
3090	case options::OPT_frounding_math:
3091	RoundingFPMath = true;
3092	break;
3093
3094	case options::OPT_fno_rounding_math:
3095	RoundingFPMath = false;
3096	break;
3097
3098	case options::OPT_fdenormal_fp_math_EQ:
3099	DenormalFPMath = llvm::parseDenormalFPAttribute(Str: A->getValue());
3100	DenormalFP32Math = DenormalFPMath;
3101	if (!DenormalFPMath.isValid()) {
3102	D.Diag(diag::err_drv_invalid_value)
3103	<< A->getAsString(Args) << A->getValue();
3104	}
3105	break;
3106
3107	case options::OPT_fdenormal_fp_math_f32_EQ:
3108	DenormalFP32Math = llvm::parseDenormalFPAttribute(Str: A->getValue());
3109	if (!DenormalFP32Math.isValid()) {
3110	D.Diag(diag::err_drv_invalid_value)
3111	<< A->getAsString(Args) << A->getValue();
3112	}
3113	break;
3114
3115	// Validate and pass through -ffp-contract option.
3116	case options::OPT_ffp_contract: {
3117	StringRef Val = A->getValue();
3118	if (Val == "fast" || Val == "on" || Val == "off" ||
3119	Val == "fast-honor-pragmas") {
3120	if (Val != FPContract && LastFpContractOverrideOption != "") {
3121	D.Diag(clang::diag::warn_drv_overriding_option)
3122	<< LastFpContractOverrideOption
3123	<< Args.MakeArgString("-ffp-contract=" + Val);
3124	}
3125
3126	FPContract = Val;
3127	LastSeenFfpContractOption = Val;
3128	LastFpContractOverrideOption = "";
3129	} else
3130	D.Diag(diag::err_drv_unsupported_option_argument)
3131	<< A->getSpelling() << Val;
3132	break;
3133	}
3134
3135	// Validate and pass through -ffp-exception-behavior option.
3136	case options::OPT_ffp_exception_behavior_EQ: {
3137	StringRef Val = A->getValue();
3138	if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&
3139	FPExceptionBehavior != Val)
3140	// Warn that previous value of option is overridden.
3141	D.Diag(clang::diag::warn_drv_overriding_option)
3142	<< Args.MakeArgString("-ffp-exception-behavior=" +
3143	FPExceptionBehavior)
3144	<< Args.MakeArgString("-ffp-exception-behavior=" + Val);
3145	TrappingMath = TrappingMathPresent = false;
3146	if (Val == "ignore" || Val == "maytrap")
3147	FPExceptionBehavior = Val;
3148	else if (Val == "strict") {
3149	FPExceptionBehavior = Val;
3150	TrappingMath = TrappingMathPresent = true;
3151	} else
3152	D.Diag(diag::err_drv_unsupported_option_argument)
3153	<< A->getSpelling() << Val;
3154	break;
3155	}
3156
3157	// Validate and pass through -ffp-eval-method option.
3158	case options::OPT_ffp_eval_method_EQ: {
3159	StringRef Val = A->getValue();
3160	if (Val == "double" || Val == "extended" || Val == "source")
3161	FPEvalMethod = Val;
3162	else
3163	D.Diag(diag::err_drv_unsupported_option_argument)
3164	<< A->getSpelling() << Val;
3165	break;
3166	}
3167
3168	case options::OPT_fexcess_precision_EQ: {
3169	StringRef Val = A->getValue();
3170	const llvm::Triple::ArchType Arch = TC.getArch();
3171	if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
3172	if (Val == "standard" || Val == "fast")
3173	Float16ExcessPrecision = Val;
3174	// To make it GCC compatible, allow the value of "16" which
3175	// means disable excess precision, the same meaning than clang's
3176	// equivalent value "none".
3177	else if (Val == "16")
3178	Float16ExcessPrecision = "none";
3179	else
3180	D.Diag(diag::err_drv_unsupported_option_argument)
3181	<< A->getSpelling() << Val;
3182	} else {
3183	if (!(Val == "standard" || Val == "fast"))
3184	D.Diag(diag::err_drv_unsupported_option_argument)
3185	<< A->getSpelling() << Val;
3186	}
3187	BFloat16ExcessPrecision = Float16ExcessPrecision;
3188	break;
3189	}
3190	case options::OPT_ffinite_math_only:
3191	HonorINFs = false;
3192	HonorNaNs = false;
3193	break;
3194	case options::OPT_fno_finite_math_only:
3195	HonorINFs = true;
3196	HonorNaNs = true;
3197	break;
3198
3199	case options::OPT_funsafe_math_optimizations:
3200	AssociativeMath = true;
3201	ReciprocalMath = true;
3202	SignedZeros = false;
3203	ApproxFunc = true;
3204	TrappingMath = false;
3205	FPExceptionBehavior = "";
3206	FPContract = "fast";
3207	LastFpContractOverrideOption = "-funsafe-math-optimizations";
3208	SeenUnsafeMathModeOption = true;
3209	break;
3210	case options::OPT_fno_unsafe_math_optimizations:
3211	AssociativeMath = false;
3212	ReciprocalMath = false;
3213	SignedZeros = true;
3214	ApproxFunc = false;
3215	restoreFPContractState();
3216	break;
3217
3218	case options::OPT_Ofast:
3219	// If -Ofast is the optimization level, then -ffast-math should be enabled
3220	if (!OFastEnabled)
3221	continue;
3222	[[fallthrough]];
3223	case options::OPT_ffast_math:
3224	applyFastMath(true);
3225	if (A->getOption().getID() == options::OPT_Ofast)
3226	LastFpContractOverrideOption = "-Ofast";
3227	else
3228	LastFpContractOverrideOption = "-ffast-math";
3229	break;
3230	case options::OPT_fno_fast_math:
3231	HonorINFs = true;
3232	HonorNaNs = true;
3233	// Turning on -ffast-math (with either flag) removes the need for
3234	// MathErrno. However, turning *off* -ffast-math merely restores the
3235	// toolchain default (which may be false).
3236	MathErrno = TC.IsMathErrnoDefault();
3237	AssociativeMath = false;
3238	ReciprocalMath = false;
3239	ApproxFunc = false;
3240	SignedZeros = true;
3241	restoreFPContractState();
3242	LastFpContractOverrideOption = "";
3243	break;
3244	} // End switch (A->getOption().getID())
3245
3246	// The StrictFPModel local variable is needed to report warnings
3247	// in the way we intend. If -ffp-model=strict has been used, we
3248	// want to report a warning for the next option encountered that
3249	// takes us out of the settings described by fp-model=strict, but
3250	// we don't want to continue issuing warnings for other conflicting
3251	// options after that.
3252	if (StrictFPModel) {
3253	// If -ffp-model=strict has been specified on command line but
3254	// subsequent options conflict then emit warning diagnostic.
3255	if (HonorINFs && HonorNaNs && !AssociativeMath && !ReciprocalMath &&
3256	SignedZeros && TrappingMath && RoundingFPMath && !ApproxFunc &&
3257	FPContract == "off")
3258	// OK: Current Arg doesn't conflict with -ffp-model=strict
3259	;
3260	else {
3261	StrictFPModel = false;
3262	FPModel = "";
3263	// The warning for -ffp-contract would have been reported by the
3264	// OPT_ffp_contract_EQ handler above. A special check here is needed
3265	// to avoid duplicating the warning.
3266	auto RHS = (A->getNumValues() == 0)
3267	? A->getSpelling()
3268	: Args.MakeArgString(Str: A->getSpelling() + A->getValue());
3269	if (A->getSpelling() != "-ffp-contract=") {
3270	if (RHS != "-ffp-model=strict")
3271	D.Diag(clang::diag::warn_drv_overriding_option)
3272	<< "-ffp-model=strict" << RHS;
3273	}
3274	}
3275	}
3276
3277	// If we handled this option claim it
3278	A->claim();
3279	}
3280
3281	if (!HonorINFs)
3282	CmdArgs.push_back(Elt: "-menable-no-infs");
3283
3284	if (!HonorNaNs)
3285	CmdArgs.push_back(Elt: "-menable-no-nans");
3286
3287	if (ApproxFunc)
3288	CmdArgs.push_back(Elt: "-fapprox-func");
3289
3290	if (MathErrno) {
3291	CmdArgs.push_back(Elt: "-fmath-errno");
3292	if (NoMathErrnoWasImpliedByVecLib)
3293	D.Diag(clang::diag::warn_drv_math_errno_enabled_after_veclib)
3294	<< ArgThatEnabledMathErrnoAfterVecLib->getAsString(Args)
3295	<< VecLibArg->getAsString(Args);
3296	}
3297
3298	if (AssociativeMath && ReciprocalMath && !SignedZeros && ApproxFunc &&
3299	!TrappingMath)
3300	CmdArgs.push_back(Elt: "-funsafe-math-optimizations");
3301
3302	if (!SignedZeros)
3303	CmdArgs.push_back(Elt: "-fno-signed-zeros");
3304
3305	if (AssociativeMath && !SignedZeros && !TrappingMath)
3306	CmdArgs.push_back(Elt: "-mreassociate");
3307
3308	if (ReciprocalMath)
3309	CmdArgs.push_back(Elt: "-freciprocal-math");
3310
3311	if (TrappingMath) {
3312	// FP Exception Behavior is also set to strict
3313	assert(FPExceptionBehavior == "strict");
3314	}
3315
3316	// The default is IEEE.
3317	if (DenormalFPMath != llvm::DenormalMode::getIEEE()) {
3318	llvm::SmallString<64> DenormFlag;
3319	llvm::raw_svector_ostream ArgStr(DenormFlag);
3320	ArgStr << "-fdenormal-fp-math=" << DenormalFPMath;
3321	CmdArgs.push_back(Elt: Args.MakeArgString(Str: ArgStr.str()));
3322	}
3323
3324	// Add f32 specific denormal mode flag if it's different.
3325	if (DenormalFP32Math != DenormalFPMath) {
3326	llvm::SmallString<64> DenormFlag;
3327	llvm::raw_svector_ostream ArgStr(DenormFlag);
3328	ArgStr << "-fdenormal-fp-math-f32=" << DenormalFP32Math;
3329	CmdArgs.push_back(Elt: Args.MakeArgString(Str: ArgStr.str()));
3330	}
3331
3332	if (!FPContract.empty())
3333	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffp-contract=" + FPContract));
3334
3335	if (RoundingFPMath)
3336	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-frounding-math"));
3337	else
3338	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fno-rounding-math"));
3339
3340	if (!FPExceptionBehavior.empty())
3341	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffp-exception-behavior=" +
3342	FPExceptionBehavior));
3343
3344	if (!FPEvalMethod.empty())
3345	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffp-eval-method=" + FPEvalMethod));
3346
3347	if (!Float16ExcessPrecision.empty())
3348	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ffloat16-excess-precision=" +
3349	Float16ExcessPrecision));
3350	if (!BFloat16ExcessPrecision.empty())
3351	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fbfloat16-excess-precision=" +
3352	BFloat16ExcessPrecision));
3353
3354	StringRef Recip = parseMRecipOption(Diags&: D.getDiags(), Args);
3355	if (!Recip.empty())
3356	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mrecip=" + Recip));
3357
3358	// -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the
3359	// individual features enabled by -ffast-math instead of the option itself as
3360	// that's consistent with gcc's behaviour.
3361	if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath && ApproxFunc &&
3362	ReciprocalMath && !SignedZeros && !TrappingMath && !RoundingFPMath)
3363	CmdArgs.push_back(Elt: "-ffast-math");
3364
3365	// Handle __FINITE_MATH_ONLY__ similarly.
3366	// The -ffinite-math-only is added to CmdArgs when !HonorINFs && !HonorNaNs.
3367	// Otherwise process the Xclang arguments to determine if -menable-no-infs and
3368	// -menable-no-nans are set by the user.
3369	bool shouldAddFiniteMathOnly = false;
3370	if (!HonorINFs && !HonorNaNs) {
3371	shouldAddFiniteMathOnly = true;
3372	} else {
3373	bool InfValues = true;
3374	bool NanValues = true;
3375	for (const auto *Arg : Args.filtered(options::OPT_Xclang)) {
3376	StringRef ArgValue = Arg->getValue();
3377	if (ArgValue == "-menable-no-nans")
3378	NanValues = false;
3379	else if (ArgValue == "-menable-no-infs")
3380	InfValues = false;
3381	}
3382	if (!NanValues && !InfValues)
3383	shouldAddFiniteMathOnly = true;
3384	}
3385	if (shouldAddFiniteMathOnly) {
3386	CmdArgs.push_back(Elt: "-ffinite-math-only");
3387	}
3388	if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
3389	CmdArgs.push_back(Elt: "-mfpmath");
3390	CmdArgs.push_back(Elt: A->getValue());
3391	}
3392
3393	// Disable a codegen optimization for floating-point casts.
3394	if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,
3395	options::OPT_fstrict_float_cast_overflow, false))
3396	CmdArgs.push_back(Elt: "-fno-strict-float-cast-overflow");
3397
3398	if (Range != LangOptions::ComplexRangeKind::CX_None)
3399	ComplexRangeStr = RenderComplexRangeOption(Range);
3400	if (!ComplexRangeStr.empty()) {
3401	CmdArgs.push_back(Elt: Args.MakeArgString(Str: ComplexRangeStr));
3402	if (Args.hasArg(options::OPT_fcomplex_arithmetic_EQ))
3403	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fcomplex-arithmetic=" +
3404	ComplexRangeKindToStr(Range)));
3405	}
3406	if (Args.hasArg(options::OPT_fcx_limited_range))
3407	CmdArgs.push_back(Elt: "-fcx-limited-range");
3408	if (Args.hasArg(options::OPT_fcx_fortran_rules))
3409	CmdArgs.push_back(Elt: "-fcx-fortran-rules");
3410	if (Args.hasArg(options::OPT_fno_cx_limited_range))
3411	CmdArgs.push_back(Elt: "-fno-cx-limited-range");
3412	if (Args.hasArg(options::OPT_fno_cx_fortran_rules))
3413	CmdArgs.push_back(Elt: "-fno-cx-fortran-rules");
3414	}
3415
3416	static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,
3417	const llvm::Triple &Triple,
3418	const InputInfo &Input) {
3419	// Add default argument set.
3420	if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
3421	CmdArgs.push_back(Elt: "-analyzer-checker=core");
3422	CmdArgs.push_back(Elt: "-analyzer-checker=apiModeling");
3423
3424	if (!Triple.isWindowsMSVCEnvironment()) {
3425	CmdArgs.push_back(Elt: "-analyzer-checker=unix");
3426	} else {
3427	// Enable "unix" checkers that also work on Windows.
3428	CmdArgs.push_back(Elt: "-analyzer-checker=unix.API");
3429	CmdArgs.push_back(Elt: "-analyzer-checker=unix.Malloc");
3430	CmdArgs.push_back(Elt: "-analyzer-checker=unix.MallocSizeof");
3431	CmdArgs.push_back(Elt: "-analyzer-checker=unix.MismatchedDeallocator");
3432	CmdArgs.push_back(Elt: "-analyzer-checker=unix.cstring.BadSizeArg");
3433	CmdArgs.push_back(Elt: "-analyzer-checker=unix.cstring.NullArg");
3434	}
3435
3436	// Disable some unix checkers for PS4/PS5.
3437	if (Triple.isPS()) {
3438	CmdArgs.push_back(Elt: "-analyzer-disable-checker=unix.API");
3439	CmdArgs.push_back(Elt: "-analyzer-disable-checker=unix.Vfork");
3440	}
3441
3442	if (Triple.isOSDarwin()) {
3443	CmdArgs.push_back(Elt: "-analyzer-checker=osx");
3444	CmdArgs.push_back(
3445	Elt: "-analyzer-checker=security.insecureAPI.decodeValueOfObjCType");
3446	}
3447	else if (Triple.isOSFuchsia())
3448	CmdArgs.push_back(Elt: "-analyzer-checker=fuchsia");
3449
3450	CmdArgs.push_back(Elt: "-analyzer-checker=deadcode");
3451
3452	if (types::isCXX(Id: Input.getType()))
3453	CmdArgs.push_back(Elt: "-analyzer-checker=cplusplus");
3454
3455	if (!Triple.isPS()) {
3456	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.UncheckedReturn");
3457	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.getpw");
3458	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.gets");
3459	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.mktemp");
3460	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.mkstemp");
3461	CmdArgs.push_back(Elt: "-analyzer-checker=security.insecureAPI.vfork");
3462	}
3463
3464	// Default nullability checks.
3465	CmdArgs.push_back(Elt: "-analyzer-checker=nullability.NullPassedToNonnull");
3466	CmdArgs.push_back(Elt: "-analyzer-checker=nullability.NullReturnedFromNonnull");
3467	}
3468
3469	// Set the output format. The default is plist, for (lame) historical reasons.
3470	CmdArgs.push_back(Elt: "-analyzer-output");
3471	if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
3472	CmdArgs.push_back(Elt: A->getValue());
3473	else
3474	CmdArgs.push_back(Elt: "plist");
3475
3476	// Disable the presentation of standard compiler warnings when using
3477	// --analyze. We only want to show static analyzer diagnostics or frontend
3478	// errors.
3479	CmdArgs.push_back(Elt: "-w");
3480
3481	// Add -Xanalyzer arguments when running as analyzer.
3482	Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
3483	}
3484
3485	static bool isValidSymbolName(StringRef S) {
3486	if (S.empty())
3487	return false;
3488
3489	if (std::isdigit(S[0]))
3490	return false;
3491
3492	return llvm::all_of(Range&: S, P: [](char C) { return std::isalnum(C) || C == '_'; });
3493	}
3494
3495	static void RenderSSPOptions(const Driver &D, const ToolChain &TC,
3496	const ArgList &Args, ArgStringList &CmdArgs,
3497	bool KernelOrKext) {
3498	const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3499
3500	// NVPTX doesn't support stack protectors; from the compiler's perspective, it
3501	// doesn't even have a stack!
3502	if (EffectiveTriple.isNVPTX())
3503	return;
3504
3505	// -stack-protector=0 is default.
3506	LangOptions::StackProtectorMode StackProtectorLevel = LangOptions::SSPOff;
3507	LangOptions::StackProtectorMode DefaultStackProtectorLevel =
3508	TC.GetDefaultStackProtectorLevel(KernelOrKext);
3509
3510	if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
3511	options::OPT_fstack_protector_all,
3512	options::OPT_fstack_protector_strong,
3513	options::OPT_fstack_protector)) {
3514	if (A->getOption().matches(options::OPT_fstack_protector))
3515	StackProtectorLevel =
3516	std::max<>(a: LangOptions::SSPOn, b: DefaultStackProtectorLevel);
3517	else if (A->getOption().matches(options::OPT_fstack_protector_strong))
3518	StackProtectorLevel = LangOptions::SSPStrong;
3519	else if (A->getOption().matches(options::OPT_fstack_protector_all))
3520	StackProtectorLevel = LangOptions::SSPReq;
3521
3522	if (EffectiveTriple.isBPF() && StackProtectorLevel != LangOptions::SSPOff) {
3523	D.Diag(diag::warn_drv_unsupported_option_for_target)
3524	<< A->getSpelling() << EffectiveTriple.getTriple();
3525	StackProtectorLevel = DefaultStackProtectorLevel;
3526	}
3527	} else {
3528	StackProtectorLevel = DefaultStackProtectorLevel;
3529	}
3530
3531	if (StackProtectorLevel) {
3532	CmdArgs.push_back(Elt: "-stack-protector");
3533	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(StackProtectorLevel)));
3534	}
3535
3536	// --param ssp-buffer-size=
3537	for (const Arg *A : Args.filtered(options::OPT__param)) {
3538	StringRef Str(A->getValue());
3539	if (Str.consume_front("ssp-buffer-size=")) {
3540	if (StackProtectorLevel) {
3541	CmdArgs.push_back("-stack-protector-buffer-size");
3542	// FIXME: Verify the argument is a valid integer.
3543	CmdArgs.push_back(Args.MakeArgString(Str));
3544	}
3545	A->claim();
3546	}
3547	}
3548
3549	const std::string &TripleStr = EffectiveTriple.getTriple();
3550	if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_EQ)) {
3551	StringRef Value = A->getValue();
3552	if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3553	!EffectiveTriple.isARM() && !EffectiveTriple.isThumb() &&
3554	!EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())
3555	D.Diag(diag::err_drv_unsupported_opt_for_target)
3556	<< A->getAsString(Args) << TripleStr;
3557	if ((EffectiveTriple.isX86() || EffectiveTriple.isARM() ||
3558	EffectiveTriple.isThumb()) &&
3559	Value != "tls" && Value != "global") {
3560	D.Diag(diag::err_drv_invalid_value_with_suggestion)
3561	<< A->getOption().getName() << Value << "tls global";
3562	return;
3563	}
3564	if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&
3565	Value == "tls") {
3566	if (!Args.hasArg(options::OPT_mstack_protector_guard_offset_EQ)) {
3567	D.Diag(diag::err_drv_ssp_missing_offset_argument)
3568	<< A->getAsString(Args);
3569	return;
3570	}
3571	// Check whether the target subarch supports the hardware TLS register
3572	if (!arm::isHardTPSupported(Triple: EffectiveTriple)) {
3573	D.Diag(diag::err_target_unsupported_tp_hard)
3574	<< EffectiveTriple.getArchName();
3575	return;
3576	}
3577	// Check whether the user asked for something other than -mtp=cp15
3578	if (Arg *A = Args.getLastArg(options::OPT_mtp_mode_EQ)) {
3579	StringRef Value = A->getValue();
3580	if (Value != "cp15") {
3581	D.Diag(diag::err_drv_argument_not_allowed_with)
3582	<< A->getAsString(Args) << "-mstack-protector-guard=tls";
3583	return;
3584	}
3585	}
3586	CmdArgs.push_back(Elt: "-target-feature");
3587	CmdArgs.push_back(Elt: "+read-tp-tpidruro");
3588	}
3589	if (EffectiveTriple.isAArch64() && Value != "sysreg" && Value != "global") {
3590	D.Diag(diag::err_drv_invalid_value_with_suggestion)
3591	<< A->getOption().getName() << Value << "sysreg global";
3592	return;
3593	}
3594	if (EffectiveTriple.isRISCV() || EffectiveTriple.isPPC()) {
3595	if (Value != "tls" && Value != "global") {
3596	D.Diag(diag::err_drv_invalid_value_with_suggestion)
3597	<< A->getOption().getName() << Value << "tls global";
3598	return;
3599	}
3600	if (Value == "tls") {
3601	if (!Args.hasArg(options::OPT_mstack_protector_guard_offset_EQ)) {
3602	D.Diag(diag::err_drv_ssp_missing_offset_argument)
3603	<< A->getAsString(Args);
3604	return;
3605	}
3606	}
3607	}
3608	A->render(Args, Output&: CmdArgs);
3609	}
3610
3611	if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_offset_EQ)) {
3612	StringRef Value = A->getValue();
3613	if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3614	!EffectiveTriple.isARM() && !EffectiveTriple.isThumb() &&
3615	!EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())
3616	D.Diag(diag::err_drv_unsupported_opt_for_target)
3617	<< A->getAsString(Args) << TripleStr;
3618	int Offset;
3619	if (Value.getAsInteger(Radix: 10, Result&: Offset)) {
3620	D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3621	return;
3622	}
3623	if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&
3624	(Offset < 0 || Offset > 0xfffff)) {
3625	D.Diag(diag::err_drv_invalid_int_value)
3626	<< A->getOption().getName() << Value;
3627	return;
3628	}
3629	A->render(Args, Output&: CmdArgs);
3630	}
3631
3632	if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_reg_EQ)) {
3633	StringRef Value = A->getValue();
3634	if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&
3635	!EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())
3636	D.Diag(diag::err_drv_unsupported_opt_for_target)
3637	<< A->getAsString(Args) << TripleStr;
3638	if (EffectiveTriple.isX86() && (Value != "fs" && Value != "gs")) {
3639	D.Diag(diag::err_drv_invalid_value_with_suggestion)
3640	<< A->getOption().getName() << Value << "fs gs";
3641	return;
3642	}
3643	if (EffectiveTriple.isAArch64() && Value != "sp_el0") {
3644	D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
3645	return;
3646	}
3647	if (EffectiveTriple.isRISCV() && Value != "tp") {
3648	D.Diag(diag::err_drv_invalid_value_with_suggestion)
3649	<< A->getOption().getName() << Value << "tp";
3650	return;
3651	}
3652	if (EffectiveTriple.isPPC64() && Value != "r13") {
3653	D.Diag(diag::err_drv_invalid_value_with_suggestion)
3654	<< A->getOption().getName() << Value << "r13";
3655	return;
3656	}
3657	if (EffectiveTriple.isPPC32() && Value != "r2") {
3658	D.Diag(diag::err_drv_invalid_value_with_suggestion)
3659	<< A->getOption().getName() << Value << "r2";
3660	return;
3661	}
3662	A->render(Args, Output&: CmdArgs);
3663	}
3664
3665	if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_symbol_EQ)) {
3666	StringRef Value = A->getValue();
3667	if (!isValidSymbolName(S: Value)) {
3668	D.Diag(diag::err_drv_argument_only_allowed_with)
3669	<< A->getOption().getName() << "legal symbol name";
3670	return;
3671	}
3672	A->render(Args, Output&: CmdArgs);
3673	}
3674	}
3675
3676	static void RenderSCPOptions(const ToolChain &TC, const ArgList &Args,
3677	ArgStringList &CmdArgs) {
3678	const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();
3679
3680	if (!EffectiveTriple.isOSFreeBSD() && !EffectiveTriple.isOSLinux() &&
3681	!EffectiveTriple.isOSFuchsia())
3682	return;
3683
3684	if (!EffectiveTriple.isX86() && !EffectiveTriple.isSystemZ() &&
3685	!EffectiveTriple.isPPC64() && !EffectiveTriple.isAArch64() &&
3686	!EffectiveTriple.isRISCV())
3687	return;
3688
3689	Args.addOptInFlag(CmdArgs, options::OPT_fstack_clash_protection,
3690	options::OPT_fno_stack_clash_protection);
3691	}
3692
3693	static void RenderTrivialAutoVarInitOptions(const Driver &D,
3694	const ToolChain &TC,
3695	const ArgList &Args,
3696	ArgStringList &CmdArgs) {
3697	auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();
3698	StringRef TrivialAutoVarInit = "";
3699
3700	for (const Arg *A : Args) {
3701	switch (A->getOption().getID()) {
3702	default:
3703	continue;
3704	case options::OPT_ftrivial_auto_var_init: {
3705	A->claim();
3706	StringRef Val = A->getValue();
3707	if (Val == "uninitialized" || Val == "zero" || Val == "pattern")
3708	TrivialAutoVarInit = Val;
3709	else
3710	D.Diag(diag::err_drv_unsupported_option_argument)
3711	<< A->getSpelling() << Val;
3712	break;
3713	}
3714	}
3715	}
3716
3717	if (TrivialAutoVarInit.empty())
3718	switch (DefaultTrivialAutoVarInit) {
3719	case LangOptions::TrivialAutoVarInitKind::Uninitialized:
3720	break;
3721	case LangOptions::TrivialAutoVarInitKind::Pattern:
3722	TrivialAutoVarInit = "pattern";
3723	break;
3724	case LangOptions::TrivialAutoVarInitKind::Zero:
3725	TrivialAutoVarInit = "zero";
3726	break;
3727	}
3728
3729	if (!TrivialAutoVarInit.empty()) {
3730	CmdArgs.push_back(
3731	Elt: Args.MakeArgString(Str: "-ftrivial-auto-var-init=" + TrivialAutoVarInit));
3732	}
3733
3734	if (Arg *A =
3735	Args.getLastArg(options::OPT_ftrivial_auto_var_init_stop_after)) {
3736	if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||
3737	StringRef(
3738	Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==
3739	"uninitialized")
3740	D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_missing_dependency);
3741	A->claim();
3742	StringRef Val = A->getValue();
3743	if (std::stoi(Val.str()) <= 0)
3744	D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_invalid_value);
3745	CmdArgs.push_back(
3746	Elt: Args.MakeArgString(Str: "-ftrivial-auto-var-init-stop-after=" + Val));
3747	}
3748
3749	if (Arg *A = Args.getLastArg(options::OPT_ftrivial_auto_var_init_max_size)) {
3750	if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||
3751	StringRef(
3752	Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==
3753	"uninitialized")
3754	D.Diag(diag::err_drv_trivial_auto_var_init_max_size_missing_dependency);
3755	A->claim();
3756	StringRef Val = A->getValue();
3757	if (std::stoi(Val.str()) <= 0)
3758	D.Diag(diag::err_drv_trivial_auto_var_init_max_size_invalid_value);
3759	CmdArgs.push_back(
3760	Elt: Args.MakeArgString(Str: "-ftrivial-auto-var-init-max-size=" + Val));
3761	}
3762	}
3763
3764	static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs,
3765	types::ID InputType) {
3766	// cl-denorms-are-zero is not forwarded. It is translated into a generic flag
3767	// for denormal flushing handling based on the target.
3768	const unsigned ForwardedArguments[] = {
3769	options::OPT_cl_opt_disable,
3770	options::OPT_cl_strict_aliasing,
3771	options::OPT_cl_single_precision_constant,
3772	options::OPT_cl_finite_math_only,
3773	options::OPT_cl_kernel_arg_info,
3774	options::OPT_cl_unsafe_math_optimizations,
3775	options::OPT_cl_fast_relaxed_math,
3776	options::OPT_cl_mad_enable,
3777	options::OPT_cl_no_signed_zeros,
3778	options::OPT_cl_fp32_correctly_rounded_divide_sqrt,
3779	options::OPT_cl_uniform_work_group_size
3780	};
3781
3782	if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
3783	std::string CLStdStr = std::string("-cl-std=") + A->getValue();
3784	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CLStdStr));
3785	} else if (Arg *A = Args.getLastArg(options::OPT_cl_ext_EQ)) {
3786	std::string CLExtStr = std::string("-cl-ext=") + A->getValue();
3787	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CLExtStr));
3788	}
3789
3790	if (Args.hasArg(options::OPT_cl_finite_math_only)) {
3791	CmdArgs.push_back(Elt: "-menable-no-infs");
3792	CmdArgs.push_back(Elt: "-menable-no-nans");
3793	}
3794
3795	for (const auto &Arg : ForwardedArguments)
3796	if (const auto *A = Args.getLastArg(Arg))
3797	CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));
3798
3799	// Only add the default headers if we are compiling OpenCL sources.
3800	if ((types::isOpenCL(InputType) ||
3801	(Args.hasArg(options::OPT_cl_std_EQ) && types::isSrcFile(InputType))) &&
3802	!Args.hasArg(options::OPT_cl_no_stdinc)) {
3803	CmdArgs.push_back(Elt: "-finclude-default-header");
3804	CmdArgs.push_back(Elt: "-fdeclare-opencl-builtins");
3805	}
3806	}
3807
3808	static void RenderHLSLOptions(const ArgList &Args, ArgStringList &CmdArgs,
3809	types::ID InputType) {
3810	const unsigned ForwardedArguments[] = {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	if (!types::isHLSL(Id: InputType))
3821	return;
3822	for (const auto &Arg : ForwardedArguments)
3823	if (const auto *A = Args.getLastArg(Arg))
3824	A->renderAsInput(Args, CmdArgs);
3825	// Add the default headers if dxc_no_stdinc is not set.
3826	if (!Args.hasArg(options::OPT_dxc_no_stdinc) &&
3827	!Args.hasArg(options::OPT_nostdinc))
3828	CmdArgs.push_back(Elt: "-finclude-default-header");
3829	}
3830
3831	static void RenderOpenACCOptions(const Driver &D, const ArgList &Args,
3832	ArgStringList &CmdArgs, types::ID InputType) {
3833	if (!Args.hasArg(options::OPT_fopenacc))
3834	return;
3835
3836	CmdArgs.push_back(Elt: "-fopenacc");
3837
3838	if (Arg *A = Args.getLastArg(options::OPT_openacc_macro_override)) {
3839	StringRef Value = A->getValue();
3840	int Version;
3841	if (!Value.getAsInteger(Radix: 10, Result&: Version))
3842	A->renderAsInput(Args, Output&: CmdArgs);
3843	else
3844	D.Diag(diag::err_drv_clang_unsupported) << Value;
3845	}
3846	}
3847
3848	static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,
3849	const ArgList &Args, ArgStringList &CmdArgs) {
3850	// -fbuiltin is default unless -mkernel is used.
3851	bool UseBuiltins =
3852	Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
3853	!Args.hasArg(options::OPT_mkernel));
3854	if (!UseBuiltins)
3855	CmdArgs.push_back(Elt: "-fno-builtin");
3856
3857	// -ffreestanding implies -fno-builtin.
3858	if (Args.hasArg(options::OPT_ffreestanding))
3859	UseBuiltins = false;
3860
3861	// Process the -fno-builtin-* options.
3862	for (const Arg *A : Args.filtered(options::OPT_fno_builtin_)) {
3863	A->claim();
3864
3865	// If -fno-builtin is specified, then there's no need to pass the option to
3866	// the frontend.
3867	if (UseBuiltins)
3868	A->render(Args, CmdArgs);
3869	}
3870	}
3871
3872	bool Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {
3873	if (const char *Str = std::getenv(name: "CLANG_MODULE_CACHE_PATH")) {
3874	Twine Path{Str};
3875	Path.toVector(Out&: Result);
3876	return Path.getSingleStringRef() != "";
3877	}
3878	if (llvm::sys::path::cache_directory(result&: Result)) {
3879	llvm::sys::path::append(path&: Result, a: "clang");
3880	llvm::sys::path::append(path&: Result, a: "ModuleCache");
3881	return true;
3882	}
3883	return false;
3884	}
3885
3886	llvm::SmallString<256>
3887	clang::driver::tools::getCXX20NamedModuleOutputPath(const ArgList &Args,
3888	const char *BaseInput) {
3889	if (Arg *ModuleOutputEQ = Args.getLastArg(options::OPT_fmodule_output_EQ))
3890	return StringRef(ModuleOutputEQ->getValue());
3891
3892	SmallString<256> OutputPath;
3893	if (Arg *FinalOutput = Args.getLastArg(options::OPT_o);
3894	FinalOutput && Args.hasArg(options::OPT_c))
3895	OutputPath = FinalOutput->getValue();
3896	else
3897	OutputPath = BaseInput;
3898
3899	const char *Extension = types::getTypeTempSuffix(Id: types::TY_ModuleFile);
3900	llvm::sys::path::replace_extension(path&: OutputPath, extension: Extension);
3901	return OutputPath;
3902	}
3903
3904	static bool RenderModulesOptions(Compilation &C, const Driver &D,
3905	const ArgList &Args, const InputInfo &Input,
3906	const InputInfo &Output, bool HaveStd20,
3907	ArgStringList &CmdArgs) {
3908	bool IsCXX = types::isCXX(Id: Input.getType());
3909	bool HaveStdCXXModules = IsCXX && HaveStd20;
3910	bool HaveModules = HaveStdCXXModules;
3911
3912	// -fmodules enables the use of precompiled modules (off by default).
3913	// Users can pass -fno-cxx-modules to turn off modules support for
3914	// C++/Objective-C++ programs.
3915	bool HaveClangModules = false;
3916	if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
3917	bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
3918	options::OPT_fno_cxx_modules, true);
3919	if (AllowedInCXX || !IsCXX) {
3920	CmdArgs.push_back(Elt: "-fmodules");
3921	HaveClangModules = true;
3922	}
3923	}
3924
3925	HaveModules |= HaveClangModules;
3926
3927	// -fmodule-maps enables implicit reading of module map files. By default,
3928	// this is enabled if we are using Clang's flavor of precompiled modules.
3929	if (Args.hasFlag(options::OPT_fimplicit_module_maps,
3930	options::OPT_fno_implicit_module_maps, HaveClangModules))
3931	CmdArgs.push_back(Elt: "-fimplicit-module-maps");
3932
3933	// -fmodules-decluse checks that modules used are declared so (off by default)
3934	Args.addOptInFlag(CmdArgs, options::OPT_fmodules_decluse,
3935	options::OPT_fno_modules_decluse);
3936
3937	// -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
3938	// all #included headers are part of modules.
3939	if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
3940	options::OPT_fno_modules_strict_decluse, false))
3941	CmdArgs.push_back(Elt: "-fmodules-strict-decluse");
3942
3943	Args.addOptOutFlag(CmdArgs, options::OPT_fmodulemap_allow_subdirectory_search,
3944	options::OPT_fno_modulemap_allow_subdirectory_search);
3945
3946	// -fno-implicit-modules turns off implicitly compiling modules on demand.
3947	bool ImplicitModules = false;
3948	if (!Args.hasFlag(options::OPT_fimplicit_modules,
3949	options::OPT_fno_implicit_modules, HaveClangModules)) {
3950	if (HaveModules)
3951	CmdArgs.push_back(Elt: "-fno-implicit-modules");
3952	} else if (HaveModules) {
3953	ImplicitModules = true;
3954	// -fmodule-cache-path specifies where our implicitly-built module files
3955	// should be written.
3956	SmallString<128> Path;
3957	if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
3958	Path = A->getValue();
3959
3960	bool HasPath = true;
3961	if (C.isForDiagnostics()) {
3962	// When generating crash reports, we want to emit the modules along with
3963	// the reproduction sources, so we ignore any provided module path.
3964	Path = Output.getFilename();
3965	llvm::sys::path::replace_extension(path&: Path, extension: ".cache");
3966	llvm::sys::path::append(path&: Path, a: "modules");
3967	} else if (Path.empty()) {
3968	// No module path was provided: use the default.
3969	HasPath = Driver::getDefaultModuleCachePath(Result&: Path);
3970	}
3971
3972	// `HasPath` will only be false if getDefaultModuleCachePath() fails.
3973	// That being said, that failure is unlikely and not caching is harmless.
3974	if (HasPath) {
3975	const char Arg[] = "-fmodules-cache-path=";
3976	Path.insert(I: Path.begin(), From: Arg, To: Arg + strlen(s: Arg));
3977	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Path));
3978	}
3979	}
3980
3981	if (HaveModules) {
3982	if (Args.hasFlag(options::OPT_fprebuilt_implicit_modules,
3983	options::OPT_fno_prebuilt_implicit_modules, false))
3984	CmdArgs.push_back(Elt: "-fprebuilt-implicit-modules");
3985	if (Args.hasFlag(options::OPT_fmodules_validate_input_files_content,
3986	options::OPT_fno_modules_validate_input_files_content,
3987	false))
3988	CmdArgs.push_back(Elt: "-fvalidate-ast-input-files-content");
3989	}
3990
3991	// -fmodule-name specifies the module that is currently being built (or
3992	// used for header checking by -fmodule-maps).
3993	Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
3994
3995	// -fmodule-map-file can be used to specify files containing module
3996	// definitions.
3997	Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
3998
3999	// -fbuiltin-module-map can be used to load the clang
4000	// builtin headers modulemap file.
4001	if (Args.hasArg(options::OPT_fbuiltin_module_map)) {
4002	SmallString<128> BuiltinModuleMap(D.ResourceDir);
4003	llvm::sys::path::append(path&: BuiltinModuleMap, a: "include");
4004	llvm::sys::path::append(path&: BuiltinModuleMap, a: "module.modulemap");
4005	if (llvm::sys::fs::exists(Path: BuiltinModuleMap))
4006	CmdArgs.push_back(
4007	Elt: Args.MakeArgString(Str: "-fmodule-map-file=" + BuiltinModuleMap));
4008	}
4009
4010	// The -fmodule-file=<name>=<file> form specifies the mapping of module
4011	// names to precompiled module files (the module is loaded only if used).
4012	// The -fmodule-file=<file> form can be used to unconditionally load
4013	// precompiled module files (whether used or not).
4014	if (HaveModules || Input.getType() == clang::driver::types::TY_ModuleFile) {
4015	Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
4016
4017	// -fprebuilt-module-path specifies where to load the prebuilt module files.
4018	for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {
4019	CmdArgs.push_back(Args.MakeArgString(
4020	std::string("-fprebuilt-module-path=") + A->getValue()));
4021	A->claim();
4022	}
4023	} else
4024	Args.ClaimAllArgs(options::OPT_fmodule_file);
4025
4026	// When building modules and generating crashdumps, we need to dump a module
4027	// dependency VFS alongside the output.
4028	if (HaveClangModules && C.isForDiagnostics()) {
4029	SmallString<128> VFSDir(Output.getFilename());
4030	llvm::sys::path::replace_extension(path&: VFSDir, extension: ".cache");
4031	// Add the cache directory as a temp so the crash diagnostics pick it up.
4032	C.addTempFile(Name: Args.MakeArgString(Str: VFSDir));
4033
4034	llvm::sys::path::append(path&: VFSDir, a: "vfs");
4035	CmdArgs.push_back(Elt: "-module-dependency-dir");
4036	CmdArgs.push_back(Elt: Args.MakeArgString(Str: VFSDir));
4037	}
4038
4039	if (HaveClangModules)
4040	Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
4041
4042	// Pass through all -fmodules-ignore-macro arguments.
4043	Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
4044	Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
4045	Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
4046
4047	if (HaveClangModules) {
4048	Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
4049
4050	if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
4051	if (Args.hasArg(options::OPT_fbuild_session_timestamp))
4052	D.Diag(diag::err_drv_argument_not_allowed_with)
4053	<< A->getAsString(Args) << "-fbuild-session-timestamp";
4054
4055	llvm::sys::fs::file_status Status;
4056	if (llvm::sys::fs::status(A->getValue(), Status))
4057	D.Diag(diag::err_drv_no_such_file) << A->getValue();
4058	CmdArgs.push_back(Elt: Args.MakeArgString(
4059	Str: "-fbuild-session-timestamp=" +
4060	Twine((uint64_t)std::chrono::duration_cast<std::chrono::seconds>(
4061	d: Status.getLastModificationTime().time_since_epoch())
4062	.count())));
4063	}
4064
4065	if (Args.getLastArg(
4066	options::OPT_fmodules_validate_once_per_build_session)) {
4067	if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
4068	options::OPT_fbuild_session_file))
4069	D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
4070
4071	Args.AddLastArg(CmdArgs,
4072	options::OPT_fmodules_validate_once_per_build_session);
4073	}
4074
4075	if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,
4076	options::OPT_fno_modules_validate_system_headers,
4077	ImplicitModules))
4078	CmdArgs.push_back(Elt: "-fmodules-validate-system-headers");
4079
4080	Args.AddLastArg(CmdArgs,
4081	options::OPT_fmodules_disable_diagnostic_validation);
4082	} else {
4083	Args.ClaimAllArgs(options::OPT_fbuild_session_timestamp);
4084	Args.ClaimAllArgs(options::OPT_fbuild_session_file);
4085	Args.ClaimAllArgs(options::OPT_fmodules_validate_once_per_build_session);
4086	Args.ClaimAllArgs(options::OPT_fmodules_validate_system_headers);
4087	Args.ClaimAllArgs(options::OPT_fno_modules_validate_system_headers);
4088	Args.ClaimAllArgs(options::OPT_fmodules_disable_diagnostic_validation);
4089	}
4090
4091	// FIXME: We provisionally don't check ODR violations for decls in the global
4092	// module fragment.
4093	CmdArgs.push_back(Elt: "-fskip-odr-check-in-gmf");
4094
4095	if (Args.hasArg(options::OPT_modules_reduced_bmi) &&
4096	(Input.getType() == driver::types::TY_CXXModule ||
4097	Input.getType() == driver::types::TY_PP_CXXModule)) {
4098	CmdArgs.push_back(Elt: "-fmodules-reduced-bmi");
4099
4100	if (Args.hasArg(options::OPT_fmodule_output_EQ))
4101	Args.AddLastArg(CmdArgs, options::OPT_fmodule_output_EQ);
4102	else {
4103	if (Args.hasArg(options::OPT__precompile) &&
4104	(!Args.hasArg(options::OPT_o) ||
4105	Args.getLastArg(options::OPT_o)->getValue() ==
4106	getCXX20NamedModuleOutputPath(Args, Input.getBaseInput()))) {
4107	D.Diag(diag::err_drv_reduced_module_output_overrided);
4108	}
4109
4110	CmdArgs.push_back(Elt: Args.MakeArgString(
4111	Str: "-fmodule-output=" +
4112	getCXX20NamedModuleOutputPath(Args, BaseInput: Input.getBaseInput())));
4113	}
4114	}
4115
4116	// Noop if we see '-fmodules-reduced-bmi' with other translation
4117	// units than module units. This is more user friendly to allow end uers to
4118	// enable this feature without asking for help from build systems.
4119	Args.ClaimAllArgs(options::OPT_modules_reduced_bmi);
4120
4121	// We need to include the case the input file is a module file here.
4122	// Since the default compilation model for C++ module interface unit will
4123	// create temporary module file and compile the temporary module file
4124	// to get the object file. Then the `-fmodule-output` flag will be
4125	// brought to the second compilation process. So we have to claim it for
4126	// the case too.
4127	if (Input.getType() == driver::types::TY_CXXModule ||
4128	Input.getType() == driver::types::TY_PP_CXXModule ||
4129	Input.getType() == driver::types::TY_ModuleFile) {
4130	Args.ClaimAllArgs(options::OPT_fmodule_output);
4131	Args.ClaimAllArgs(options::OPT_fmodule_output_EQ);
4132	}
4133
4134	if (Args.hasArg(options::OPT_fmodules_embed_all_files))
4135	CmdArgs.push_back(Elt: "-fmodules-embed-all-files");
4136
4137	return HaveModules;
4138	}
4139
4140	static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,
4141	ArgStringList &CmdArgs) {
4142	// -fsigned-char is default.
4143	if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,
4144	options::OPT_fno_signed_char,
4145	options::OPT_funsigned_char,
4146	options::OPT_fno_unsigned_char)) {
4147	if (A->getOption().matches(options::OPT_funsigned_char) ||
4148	A->getOption().matches(options::OPT_fno_signed_char)) {
4149	CmdArgs.push_back(Elt: "-fno-signed-char");
4150	}
4151	} else if (!isSignedCharDefault(Triple: T)) {
4152	CmdArgs.push_back(Elt: "-fno-signed-char");
4153	}
4154
4155	// The default depends on the language standard.
4156	Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);
4157
4158	if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
4159	options::OPT_fno_short_wchar)) {
4160	if (A->getOption().matches(options::OPT_fshort_wchar)) {
4161	CmdArgs.push_back(Elt: "-fwchar-type=short");
4162	CmdArgs.push_back(Elt: "-fno-signed-wchar");
4163	} else {
4164	bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();
4165	CmdArgs.push_back(Elt: "-fwchar-type=int");
4166	if (T.isOSzOS() ||
4167	(IsARM && !(T.isOSWindows() || T.isOSNetBSD() || T.isOSOpenBSD())))
4168	CmdArgs.push_back(Elt: "-fno-signed-wchar");
4169	else
4170	CmdArgs.push_back(Elt: "-fsigned-wchar");
4171	}
4172	} else if (T.isOSzOS())
4173	CmdArgs.push_back(Elt: "-fno-signed-wchar");
4174	}
4175
4176	static void RenderObjCOptions(const ToolChain &TC, const Driver &D,
4177	const llvm::Triple &T, const ArgList &Args,
4178	ObjCRuntime &Runtime, bool InferCovariantReturns,
4179	const InputInfo &Input, ArgStringList &CmdArgs) {
4180	const llvm::Triple::ArchType Arch = TC.getArch();
4181
4182	// -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy
4183	// is the default. Except for deployment target of 10.5, next runtime is
4184	// always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.
4185	if (Runtime.isNonFragile()) {
4186	if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
4187	options::OPT_fno_objc_legacy_dispatch,
4188	Runtime.isLegacyDispatchDefaultForArch(Arch))) {
4189	if (TC.UseObjCMixedDispatch())
4190	CmdArgs.push_back(Elt: "-fobjc-dispatch-method=mixed");
4191	else
4192	CmdArgs.push_back(Elt: "-fobjc-dispatch-method=non-legacy");
4193	}
4194	}
4195
4196	// When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option
4197	// to do Array/Dictionary subscripting by default.
4198	if (Arch == llvm::Triple::x86 && T.isMacOSX() &&
4199	Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())
4200	CmdArgs.push_back(Elt: "-fobjc-subscripting-legacy-runtime");
4201
4202	// Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
4203	// NOTE: This logic is duplicated in ToolChains.cpp.
4204	if (isObjCAutoRefCount(Args)) {
4205	TC.CheckObjCARC();
4206
4207	CmdArgs.push_back(Elt: "-fobjc-arc");
4208
4209	// FIXME: It seems like this entire block, and several around it should be
4210	// wrapped in isObjC, but for now we just use it here as this is where it
4211	// was being used previously.
4212	if (types::isCXX(Id: Input.getType()) && types::isObjC(Id: Input.getType())) {
4213	if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
4214	CmdArgs.push_back(Elt: "-fobjc-arc-cxxlib=libc++");
4215	else
4216	CmdArgs.push_back(Elt: "-fobjc-arc-cxxlib=libstdc++");
4217	}
4218
4219	// Allow the user to enable full exceptions code emission.
4220	// We default off for Objective-C, on for Objective-C++.
4221	if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
4222	options::OPT_fno_objc_arc_exceptions,
4223	/*Default=*/types::isCXX(Input.getType())))
4224	CmdArgs.push_back(Elt: "-fobjc-arc-exceptions");
4225	}
4226
4227	// Silence warning for full exception code emission options when explicitly
4228	// set to use no ARC.
4229	if (Args.hasArg(options::OPT_fno_objc_arc)) {
4230	Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);
4231	Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);
4232	}
4233
4234	// Allow the user to control whether messages can be converted to runtime
4235	// functions.
4236	if (types::isObjC(Id: Input.getType())) {
4237	auto *Arg = Args.getLastArg(
4238	options::OPT_fobjc_convert_messages_to_runtime_calls,
4239	options::OPT_fno_objc_convert_messages_to_runtime_calls);
4240	if (Arg &&
4241	Arg->getOption().matches(
4242	options::OPT_fno_objc_convert_messages_to_runtime_calls))
4243	CmdArgs.push_back(Elt: "-fno-objc-convert-messages-to-runtime-calls");
4244	}
4245
4246	// -fobjc-infer-related-result-type is the default, except in the Objective-C
4247	// rewriter.
4248	if (InferCovariantReturns)
4249	CmdArgs.push_back(Elt: "-fno-objc-infer-related-result-type");
4250
4251	// Pass down -fobjc-weak or -fno-objc-weak if present.
4252	if (types::isObjC(Id: Input.getType())) {
4253	auto WeakArg =
4254	Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);
4255	if (!WeakArg) {
4256	// nothing to do
4257	} else if (!Runtime.allowsWeak()) {
4258	if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
4259	D.Diag(diag::err_objc_weak_unsupported);
4260	} else {
4261	WeakArg->render(Args, CmdArgs);
4262	}
4263	}
4264
4265	if (Args.hasArg(options::OPT_fobjc_disable_direct_methods_for_testing))
4266	CmdArgs.push_back(Elt: "-fobjc-disable-direct-methods-for-testing");
4267	}
4268
4269	static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,
4270	ArgStringList &CmdArgs) {
4271	bool CaretDefault = true;
4272	bool ColumnDefault = true;
4273
4274	if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,
4275	options::OPT__SLASH_diagnostics_column,
4276	options::OPT__SLASH_diagnostics_caret)) {
4277	switch (A->getOption().getID()) {
4278	case options::OPT__SLASH_diagnostics_caret:
4279	CaretDefault = true;
4280	ColumnDefault = true;
4281	break;
4282	case options::OPT__SLASH_diagnostics_column:
4283	CaretDefault = false;
4284	ColumnDefault = true;
4285	break;
4286	case options::OPT__SLASH_diagnostics_classic:
4287	CaretDefault = false;
4288	ColumnDefault = false;
4289	break;
4290	}
4291	}
4292
4293	// -fcaret-diagnostics is default.
4294	if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
4295	options::OPT_fno_caret_diagnostics, CaretDefault))
4296	CmdArgs.push_back(Elt: "-fno-caret-diagnostics");
4297
4298	Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_fixit_info,
4299	options::OPT_fno_diagnostics_fixit_info);
4300	Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_show_option,
4301	options::OPT_fno_diagnostics_show_option);
4302
4303	if (const Arg *A =
4304	Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
4305	CmdArgs.push_back(Elt: "-fdiagnostics-show-category");
4306	CmdArgs.push_back(Elt: A->getValue());
4307	}
4308
4309	Args.addOptInFlag(CmdArgs, options::OPT_fdiagnostics_show_hotness,
4310	options::OPT_fno_diagnostics_show_hotness);
4311
4312	if (const Arg *A =
4313	Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
4314	std::string Opt =
4315	std::string("-fdiagnostics-hotness-threshold=") + A->getValue();
4316	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Opt));
4317	}
4318
4319	if (const Arg *A =
4320	Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) {
4321	std::string Opt =
4322	std::string("-fdiagnostics-misexpect-tolerance=") + A->getValue();
4323	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Opt));
4324	}
4325
4326	if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
4327	CmdArgs.push_back(Elt: "-fdiagnostics-format");
4328	CmdArgs.push_back(Elt: A->getValue());
4329	if (StringRef(A->getValue()) == "sarif" ||
4330	StringRef(A->getValue()) == "SARIF")
4331	D.Diag(diag::warn_drv_sarif_format_unstable);
4332	}
4333
4334	if (const Arg *A = Args.getLastArg(
4335	options::OPT_fdiagnostics_show_note_include_stack,
4336	options::OPT_fno_diagnostics_show_note_include_stack)) {
4337	const Option &O = A->getOption();
4338	if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))
4339	CmdArgs.push_back(Elt: "-fdiagnostics-show-note-include-stack");
4340	else
4341	CmdArgs.push_back(Elt: "-fno-diagnostics-show-note-include-stack");
4342	}
4343
4344	handleColorDiagnosticsArgs(D, Args, CmdArgs);
4345
4346	if (Args.hasArg(options::OPT_fansi_escape_codes))
4347	CmdArgs.push_back(Elt: "-fansi-escape-codes");
4348
4349	Args.addOptOutFlag(CmdArgs, options::OPT_fshow_source_location,
4350	options::OPT_fno_show_source_location);
4351
4352	Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_show_line_numbers,
4353	options::OPT_fno_diagnostics_show_line_numbers);
4354
4355	if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
4356	CmdArgs.push_back(Elt: "-fdiagnostics-absolute-paths");
4357
4358	if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
4359	ColumnDefault))
4360	CmdArgs.push_back(Elt: "-fno-show-column");
4361
4362	Args.addOptOutFlag(CmdArgs, options::OPT_fspell_checking,
4363	options::OPT_fno_spell_checking);
4364
4365	Args.addLastArg(CmdArgs, options::OPT_warning_suppression_mappings_EQ);
4366	}
4367
4368	DwarfFissionKind tools::getDebugFissionKind(const Driver &D,
4369	const ArgList &Args, Arg *&Arg) {
4370	Arg = Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ,
4371	options::OPT_gno_split_dwarf);
4372	if (!Arg || Arg->getOption().matches(options::OPT_gno_split_dwarf))
4373	return DwarfFissionKind::None;
4374
4375	if (Arg->getOption().matches(options::OPT_gsplit_dwarf))
4376	return DwarfFissionKind::Split;
4377
4378	StringRef Value = Arg->getValue();
4379	if (Value == "split")
4380	return DwarfFissionKind::Split;
4381	if (Value == "single")
4382	return DwarfFissionKind::Single;
4383
4384	D.Diag(diag::err_drv_unsupported_option_argument)
4385	<< Arg->getSpelling() << Arg->getValue();
4386	return DwarfFissionKind::None;
4387	}
4388
4389	static void renderDwarfFormat(const Driver &D, const llvm::Triple &T,
4390	const ArgList &Args, ArgStringList &CmdArgs,
4391	unsigned DwarfVersion) {
4392	auto *DwarfFormatArg =
4393	Args.getLastArg(options::OPT_gdwarf64, options::OPT_gdwarf32);
4394	if (!DwarfFormatArg)
4395	return;
4396
4397	if (DwarfFormatArg->getOption().matches(options::OPT_gdwarf64)) {
4398	if (DwarfVersion < 3)
4399	D.Diag(diag::err_drv_argument_only_allowed_with)
4400	<< DwarfFormatArg->getAsString(Args) << "DWARFv3 or greater";
4401	else if (!T.isArch64Bit())
4402	D.Diag(diag::err_drv_argument_only_allowed_with)
4403	<< DwarfFormatArg->getAsString(Args) << "64 bit architecture";
4404	else if (!T.isOSBinFormatELF())
4405	D.Diag(diag::err_drv_argument_only_allowed_with)
4406	<< DwarfFormatArg->getAsString(Args) << "ELF platforms";
4407	}
4408
4409	DwarfFormatArg->render(Args, CmdArgs);
4410	}
4411
4412	static void
4413	renderDebugOptions(const ToolChain &TC, const Driver &D, const llvm::Triple &T,
4414	const ArgList &Args, bool IRInput, ArgStringList &CmdArgs,
4415	const InputInfo &Output,
4416	llvm::codegenoptions::DebugInfoKind &DebugInfoKind,
4417	DwarfFissionKind &DwarfFission) {
4418	if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,
4419	options::OPT_fno_debug_info_for_profiling, false) &&
4420	checkDebugInfoOption(
4421	Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))
4422	CmdArgs.push_back(Elt: "-fdebug-info-for-profiling");
4423
4424	// The 'g' groups options involve a somewhat intricate sequence of decisions
4425	// about what to pass from the driver to the frontend, but by the time they
4426	// reach cc1 they've been factored into three well-defined orthogonal choices:
4427	// * what level of debug info to generate
4428	// * what dwarf version to write
4429	// * what debugger tuning to use
4430	// This avoids having to monkey around further in cc1 other than to disable
4431	// codeview if not running in a Windows environment. Perhaps even that
4432	// decision should be made in the driver as well though.
4433	llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();
4434
4435	bool SplitDWARFInlining =
4436	Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
4437	options::OPT_fno_split_dwarf_inlining, false);
4438
4439	// Normally -gsplit-dwarf is only useful with -gN. For IR input, Clang does
4440	// object file generation and no IR generation, -gN should not be needed. So
4441	// allow -gsplit-dwarf with either -gN or IR input.
4442	if (IRInput || Args.hasArg(options::OPT_g_Group)) {
4443	Arg *SplitDWARFArg;
4444	DwarfFission = getDebugFissionKind(D, Args, Arg&: SplitDWARFArg);
4445	if (DwarfFission != DwarfFissionKind::None &&
4446	!checkDebugInfoOption(A: SplitDWARFArg, Args, D, TC)) {
4447	DwarfFission = DwarfFissionKind::None;
4448	SplitDWARFInlining = false;
4449	}
4450	}
4451	if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {
4452	DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;
4453
4454	// If the last option explicitly specified a debug-info level, use it.
4455	if (checkDebugInfoOption(A, Args, D, TC) &&
4456	A->getOption().matches(options::OPT_gN_Group)) {
4457	DebugInfoKind = debugLevelToInfoKind(A: *A);
4458	// For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more
4459	// complicated if you've disabled inline info in the skeleton CUs
4460	// (SplitDWARFInlining) - then there's value in composing split-dwarf and
4461	// line-tables-only, so let those compose naturally in that case.
4462	if (DebugInfoKind == llvm::codegenoptions::NoDebugInfo ||
4463	DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly ||
4464	(DebugInfoKind == llvm::codegenoptions::DebugLineTablesOnly &&
4465	SplitDWARFInlining))
4466	DwarfFission = DwarfFissionKind::None;
4467	}
4468	}
4469
4470	// If a debugger tuning argument appeared, remember it.
4471	bool HasDebuggerTuning = false;
4472	if (const Arg *A =
4473	Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {
4474	HasDebuggerTuning = true;
4475	if (checkDebugInfoOption(A, Args, D, TC)) {
4476	if (A->getOption().matches(options::OPT_glldb))
4477	DebuggerTuning = llvm::DebuggerKind::LLDB;
4478	else if (A->getOption().matches(options::OPT_gsce))
4479	DebuggerTuning = llvm::DebuggerKind::SCE;
4480	else if (A->getOption().matches(options::OPT_gdbx))
4481	DebuggerTuning = llvm::DebuggerKind::DBX;
4482	else
4483	DebuggerTuning = llvm::DebuggerKind::GDB;
4484	}
4485	}
4486
4487	// If a -gdwarf argument appeared, remember it.
4488	bool EmitDwarf = false;
4489	if (const Arg *A = getDwarfNArg(Args))
4490	EmitDwarf = checkDebugInfoOption(A, Args, D, TC);
4491
4492	bool EmitCodeView = false;
4493	if (const Arg *A = Args.getLastArg(options::OPT_gcodeview))
4494	EmitCodeView = checkDebugInfoOption(A, Args, D, TC);
4495
4496	// If the user asked for debug info but did not explicitly specify -gcodeview
4497	// or -gdwarf, ask the toolchain for the default format.
4498	if (!EmitCodeView && !EmitDwarf &&
4499	DebugInfoKind != llvm::codegenoptions::NoDebugInfo) {
4500	switch (TC.getDefaultDebugFormat()) {
4501	case llvm::codegenoptions::DIF_CodeView:
4502	EmitCodeView = true;
4503	break;
4504	case llvm::codegenoptions::DIF_DWARF:
4505	EmitDwarf = true;
4506	break;
4507	}
4508	}
4509
4510	unsigned RequestedDWARFVersion = 0; // DWARF version requested by the user
4511	unsigned EffectiveDWARFVersion = 0; // DWARF version TC can generate. It may
4512	// be lower than what the user wanted.
4513	if (EmitDwarf) {
4514	RequestedDWARFVersion = getDwarfVersion(TC, Args);
4515	// Clamp effective DWARF version to the max supported by the toolchain.
4516	EffectiveDWARFVersion =
4517	std::min(a: RequestedDWARFVersion, b: TC.getMaxDwarfVersion());
4518	} else {
4519	Args.ClaimAllArgs(options::OPT_fdebug_default_version);
4520	}
4521
4522	// -gline-directives-only supported only for the DWARF debug info.
4523	if (RequestedDWARFVersion == 0 &&
4524	DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly)
4525	DebugInfoKind = llvm::codegenoptions::NoDebugInfo;
4526
4527	// strict DWARF is set to false by default. But for DBX, we need it to be set
4528	// as true by default.
4529	if (const Arg *A = Args.getLastArg(options::OPT_gstrict_dwarf))
4530	(void)checkDebugInfoOption(A, Args, D, TC);
4531	if (Args.hasFlag(options::OPT_gstrict_dwarf, options::OPT_gno_strict_dwarf,
4532	DebuggerTuning == llvm::DebuggerKind::DBX))
4533	CmdArgs.push_back(Elt: "-gstrict-dwarf");
4534
4535	// And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.
4536	Args.ClaimAllArgs(options::OPT_g_flags_Group);
4537
4538	// Column info is included by default for everything except SCE and
4539	// CodeView if not use sampling PGO. Clang doesn't track end columns, just
4540	// starting columns, which, in theory, is fine for CodeView (and PDB). In
4541	// practice, however, the Microsoft debuggers don't handle missing end columns
4542	// well, and the AIX debugger DBX also doesn't handle the columns well, so
4543	// it's better not to include any column info.
4544	if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))
4545	(void)checkDebugInfoOption(A, Args, D, TC);
4546	if (!Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
4547	!(EmitCodeView && !getLastProfileSampleUseArg(Args)) &&
4548	(DebuggerTuning != llvm::DebuggerKind::SCE &&
4549	DebuggerTuning != llvm::DebuggerKind::DBX)))
4550	CmdArgs.push_back(Elt: "-gno-column-info");
4551
4552	// FIXME: Move backend command line options to the module.
4553	if (Args.hasFlag(options::OPT_gmodules, options::OPT_gno_modules, false)) {
4554	// If -gline-tables-only or -gline-directives-only is the last option it
4555	// wins.
4556	if (checkDebugInfoOption(Args.getLastArg(options::OPT_gmodules), Args, D,
4557	TC)) {
4558	if (DebugInfoKind != llvm::codegenoptions::DebugLineTablesOnly &&
4559	DebugInfoKind != llvm::codegenoptions::DebugDirectivesOnly) {
4560	DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;
4561	CmdArgs.push_back(Elt: "-dwarf-ext-refs");
4562	CmdArgs.push_back(Elt: "-fmodule-format=obj");
4563	}
4564	}
4565	}
4566
4567	if (T.isOSBinFormatELF() && SplitDWARFInlining)
4568	CmdArgs.push_back(Elt: "-fsplit-dwarf-inlining");
4569
4570	// After we've dealt with all combinations of things that could
4571	// make DebugInfoKind be other than None or DebugLineTablesOnly,
4572	// figure out if we need to "upgrade" it to standalone debug info.
4573	// We parse these two '-f' options whether or not they will be used,
4574	// to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
4575	bool NeedFullDebug = Args.hasFlag(
4576	options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,
4577	DebuggerTuning == llvm::DebuggerKind::LLDB ||
4578	TC.GetDefaultStandaloneDebug());
4579	if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))
4580	(void)checkDebugInfoOption(A, Args, D, TC);
4581
4582	if (DebugInfoKind == llvm::codegenoptions::LimitedDebugInfo ||
4583	DebugInfoKind == llvm::codegenoptions::DebugInfoConstructor) {
4584	if (Args.hasFlag(options::OPT_fno_eliminate_unused_debug_types,
4585	options::OPT_feliminate_unused_debug_types, false))
4586	DebugInfoKind = llvm::codegenoptions::UnusedTypeInfo;
4587	else if (NeedFullDebug)
4588	DebugInfoKind = llvm::codegenoptions::FullDebugInfo;
4589	}
4590
4591	if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,
4592	false)) {
4593	// Source embedding is a vendor extension to DWARF v5. By now we have
4594	// checked if a DWARF version was stated explicitly, and have otherwise
4595	// fallen back to the target default, so if this is still not at least 5
4596	// we emit an error.
4597	const Arg *A = Args.getLastArg(options::OPT_gembed_source);
4598	if (RequestedDWARFVersion < 5)
4599	D.Diag(diag::err_drv_argument_only_allowed_with)
4600	<< A->getAsString(Args) << "-gdwarf-5";
4601	else if (EffectiveDWARFVersion < 5)
4602	// The toolchain has reduced allowed dwarf version, so we can't enable
4603	// -gembed-source.
4604	D.Diag(diag::warn_drv_dwarf_version_limited_by_target)
4605	<< A->getAsString(Args) << TC.getTripleString() << 5
4606	<< EffectiveDWARFVersion;
4607	else if (checkDebugInfoOption(A, Args, D, TC))
4608	CmdArgs.push_back(Elt: "-gembed-source");
4609	}
4610
4611	if (Args.hasFlag(options::OPT_gkey_instructions,
4612	options::OPT_gno_key_instructions, false)) {
4613	CmdArgs.push_back(Elt: "-gkey-instructions");
4614	CmdArgs.push_back(Elt: "-mllvm");
4615	CmdArgs.push_back(Elt: "-dwarf-use-key-instructions");
4616	}
4617
4618	if (EmitCodeView) {
4619	CmdArgs.push_back(Elt: "-gcodeview");
4620
4621	Args.addOptInFlag(CmdArgs, options::OPT_gcodeview_ghash,
4622	options::OPT_gno_codeview_ghash);
4623
4624	Args.addOptOutFlag(CmdArgs, options::OPT_gcodeview_command_line,
4625	options::OPT_gno_codeview_command_line);
4626	}
4627
4628	Args.addOptOutFlag(CmdArgs, options::OPT_ginline_line_tables,
4629	options::OPT_gno_inline_line_tables);
4630
4631	// When emitting remarks, we need at least debug lines in the output.
4632	if (willEmitRemarks(Args) &&
4633	DebugInfoKind <= llvm::codegenoptions::DebugDirectivesOnly)
4634	DebugInfoKind = llvm::codegenoptions::DebugLineTablesOnly;
4635
4636	// Adjust the debug info kind for the given toolchain.
4637	TC.adjustDebugInfoKind(DebugInfoKind, Args);
4638
4639	// On AIX, the debugger tuning option can be omitted if it is not explicitly
4640	// set.
4641	RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion: EffectiveDWARFVersion,
4642	DebuggerTuning: T.isOSAIX() && !HasDebuggerTuning
4643	? llvm::DebuggerKind::Default
4644	: DebuggerTuning);
4645
4646	// -fdebug-macro turns on macro debug info generation.
4647	if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,
4648	false))
4649	if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,
4650	D, TC))
4651	CmdArgs.push_back(Elt: "-debug-info-macro");
4652
4653	// -ggnu-pubnames turns on gnu style pubnames in the backend.
4654	const auto *PubnamesArg =
4655	Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
4656	options::OPT_gpubnames, options::OPT_gno_pubnames);
4657	if (DwarfFission != DwarfFissionKind::None ||
4658	(PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC))) {
4659	const bool OptionSet =
4660	(PubnamesArg &&
4661	(PubnamesArg->getOption().matches(options::OPT_gpubnames) ||
4662	PubnamesArg->getOption().matches(options::OPT_ggnu_pubnames)));
4663	if ((DebuggerTuning != llvm::DebuggerKind::LLDB || OptionSet) &&
4664	(!PubnamesArg ||
4665	(!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&
4666	!PubnamesArg->getOption().matches(options::OPT_gno_pubnames))))
4667	CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(
4668	options::OPT_gpubnames)
4669	? "-gpubnames"
4670	: "-ggnu-pubnames");
4671	}
4672	const auto *SimpleTemplateNamesArg =
4673	Args.getLastArg(options::OPT_gsimple_template_names,
4674	options::OPT_gno_simple_template_names);
4675	bool ForwardTemplateParams = DebuggerTuning == llvm::DebuggerKind::SCE;
4676	if (SimpleTemplateNamesArg &&
4677	checkDebugInfoOption(SimpleTemplateNamesArg, Args, D, TC)) {
4678	const auto &Opt = SimpleTemplateNamesArg->getOption();
4679	if (Opt.matches(options::OPT_gsimple_template_names)) {
4680	ForwardTemplateParams = true;
4681	CmdArgs.push_back(Elt: "-gsimple-template-names=simple");
4682	}
4683	}
4684
4685	// Emit DW_TAG_template_alias for template aliases? True by default for SCE.
4686	bool UseDebugTemplateAlias =
4687	DebuggerTuning == llvm::DebuggerKind::SCE && RequestedDWARFVersion >= 4;
4688	if (const auto *DebugTemplateAlias = Args.getLastArg(
4689	options::OPT_gtemplate_alias, options::OPT_gno_template_alias)) {
4690	// DW_TAG_template_alias is only supported from DWARFv5 but if a user
4691	// asks for it we should let them have it (if the target supports it).
4692	if (checkDebugInfoOption(DebugTemplateAlias, Args, D, TC)) {
4693	const auto &Opt = DebugTemplateAlias->getOption();
4694	UseDebugTemplateAlias = Opt.matches(options::OPT_gtemplate_alias);
4695	}
4696	}
4697	if (UseDebugTemplateAlias)
4698	CmdArgs.push_back(Elt: "-gtemplate-alias");
4699
4700	if (const Arg *A = Args.getLastArg(options::OPT_gsrc_hash_EQ)) {
4701	StringRef v = A->getValue();
4702	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-gsrc-hash=" + v));
4703	}
4704
4705	Args.addOptInFlag(CmdArgs, options::OPT_fdebug_ranges_base_address,
4706	options::OPT_fno_debug_ranges_base_address);
4707
4708	// -gdwarf-aranges turns on the emission of the aranges section in the
4709	// backend.
4710	if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges);
4711	A && checkDebugInfoOption(A, Args, D, TC)) {
4712	CmdArgs.push_back(Elt: "-mllvm");
4713	CmdArgs.push_back(Elt: "-generate-arange-section");
4714	}
4715
4716	Args.addOptInFlag(CmdArgs, options::OPT_fforce_dwarf_frame,
4717	options::OPT_fno_force_dwarf_frame);
4718
4719	bool EnableTypeUnits = false;
4720	if (Args.hasFlag(options::OPT_fdebug_types_section,
4721	options::OPT_fno_debug_types_section, false)) {
4722	if (!(T.isOSBinFormatELF() || T.isOSBinFormatWasm())) {
4723	D.Diag(diag::err_drv_unsupported_opt_for_target)
4724	<< Args.getLastArg(options::OPT_fdebug_types_section)
4725	->getAsString(Args)
4726	<< T.getTriple();
4727	} else if (checkDebugInfoOption(
4728	Args.getLastArg(options::OPT_fdebug_types_section), Args, D,
4729	TC)) {
4730	EnableTypeUnits = true;
4731	CmdArgs.push_back(Elt: "-mllvm");
4732	CmdArgs.push_back(Elt: "-generate-type-units");
4733	}
4734	}
4735
4736	if (const Arg *A =
4737	Args.getLastArg(options::OPT_gomit_unreferenced_methods,
4738	options::OPT_gno_omit_unreferenced_methods))
4739	(void)checkDebugInfoOption(A, Args, D, TC);
4740	if (Args.hasFlag(options::OPT_gomit_unreferenced_methods,
4741	options::OPT_gno_omit_unreferenced_methods, false) &&
4742	(DebugInfoKind == llvm::codegenoptions::DebugInfoConstructor ||
4743	DebugInfoKind == llvm::codegenoptions::LimitedDebugInfo) &&
4744	!EnableTypeUnits) {
4745	CmdArgs.push_back(Elt: "-gomit-unreferenced-methods");
4746	}
4747
4748	// To avoid join/split of directory+filename, the integrated assembler prefers
4749	// the directory form of .file on all DWARF versions. GNU as doesn't allow the
4750	// form before DWARF v5.
4751	if (!Args.hasFlag(options::OPT_fdwarf_directory_asm,
4752	options::OPT_fno_dwarf_directory_asm,
4753	TC.useIntegratedAs() || EffectiveDWARFVersion >= 5))
4754	CmdArgs.push_back(Elt: "-fno-dwarf-directory-asm");
4755
4756	// Decide how to render forward declarations of template instantiations.
4757	// SCE wants full descriptions, others just get them in the name.
4758	if (ForwardTemplateParams)
4759	CmdArgs.push_back(Elt: "-debug-forward-template-params");
4760
4761	// Do we need to explicitly import anonymous namespaces into the parent
4762	// scope?
4763	if (DebuggerTuning == llvm::DebuggerKind::SCE)
4764	CmdArgs.push_back(Elt: "-dwarf-explicit-import");
4765
4766	renderDwarfFormat(D, T, Args, CmdArgs, DwarfVersion: EffectiveDWARFVersion);
4767	RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);
4768
4769	// This controls whether or not we perform JustMyCode instrumentation.
4770	if (Args.hasFlag(options::OPT_fjmc, options::OPT_fno_jmc, false)) {
4771	if (TC.getTriple().isOSBinFormatELF() ||
4772	TC.getTriple().isWindowsMSVCEnvironment()) {
4773	if (DebugInfoKind >= llvm::codegenoptions::DebugInfoConstructor)
4774	CmdArgs.push_back(Elt: "-fjmc");
4775	else if (D.IsCLMode())
4776	D.Diag(clang::diag::warn_drv_jmc_requires_debuginfo) << "/JMC"
4777	<< "'/Zi', '/Z7'";
4778	else
4779	D.Diag(clang::diag::warn_drv_jmc_requires_debuginfo) << "-fjmc"
4780	<< "-g";
4781	} else {
4782	D.Diag(clang::diag::warn_drv_fjmc_for_elf_only);
4783	}
4784	}
4785
4786	// Add in -fdebug-compilation-dir if necessary.
4787	const char *DebugCompilationDir =
4788	addDebugCompDirArg(Args, CmdArgs, VFS: D.getVFS());
4789
4790	addDebugPrefixMapArg(D, TC, Args, CmdArgs);
4791
4792	// Add the output path to the object file for CodeView debug infos.
4793	if (EmitCodeView && Output.isFilename())
4794	addDebugObjectName(Args, CmdArgs, DebugCompilationDir,
4795	OutputFileName: Output.getFilename());
4796	}
4797
4798	static void ProcessVSRuntimeLibrary(const ToolChain &TC, const ArgList &Args,
4799	ArgStringList &CmdArgs) {
4800	unsigned RTOptionID = options::OPT__SLASH_MT;
4801
4802	if (Args.hasArg(options::OPT__SLASH_LDd))
4803	// The /LDd option implies /MTd. The dependent lib part can be overridden,
4804	// but defining _DEBUG is sticky.
4805	RTOptionID = options::OPT__SLASH_MTd;
4806
4807	if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
4808	RTOptionID = A->getOption().getID();
4809
4810	if (Arg *A = Args.getLastArg(options::OPT_fms_runtime_lib_EQ)) {
4811	RTOptionID = llvm::StringSwitch<unsigned>(A->getValue())
4812	.Case("static", options::OPT__SLASH_MT)
4813	.Case("static_dbg", options::OPT__SLASH_MTd)
4814	.Case("dll", options::OPT__SLASH_MD)
4815	.Case("dll_dbg", options::OPT__SLASH_MDd)
4816	.Default(options::OPT__SLASH_MT);
4817	}
4818
4819	StringRef FlagForCRT;
4820	switch (RTOptionID) {
4821	case options::OPT__SLASH_MD:
4822	if (Args.hasArg(options::OPT__SLASH_LDd))
4823	CmdArgs.push_back(Elt: "-D_DEBUG");
4824	CmdArgs.push_back(Elt: "-D_MT");
4825	CmdArgs.push_back(Elt: "-D_DLL");
4826	FlagForCRT = "--dependent-lib=msvcrt";
4827	break;
4828	case options::OPT__SLASH_MDd:
4829	CmdArgs.push_back(Elt: "-D_DEBUG");
4830	CmdArgs.push_back(Elt: "-D_MT");
4831	CmdArgs.push_back(Elt: "-D_DLL");
4832	FlagForCRT = "--dependent-lib=msvcrtd";
4833	break;
4834	case options::OPT__SLASH_MT:
4835	if (Args.hasArg(options::OPT__SLASH_LDd))
4836	CmdArgs.push_back(Elt: "-D_DEBUG");
4837	CmdArgs.push_back(Elt: "-D_MT");
4838	CmdArgs.push_back(Elt: "-flto-visibility-public-std");
4839	FlagForCRT = "--dependent-lib=libcmt";
4840	break;
4841	case options::OPT__SLASH_MTd:
4842	CmdArgs.push_back(Elt: "-D_DEBUG");
4843	CmdArgs.push_back(Elt: "-D_MT");
4844	CmdArgs.push_back(Elt: "-flto-visibility-public-std");
4845	FlagForCRT = "--dependent-lib=libcmtd";
4846	break;
4847	default:
4848	llvm_unreachable("Unexpected option ID.");
4849	}
4850
4851	if (Args.hasArg(options::OPT_fms_omit_default_lib)) {
4852	CmdArgs.push_back(Elt: "-D_VC_NODEFAULTLIB");
4853	} else {
4854	CmdArgs.push_back(Elt: FlagForCRT.data());
4855
4856	// This provides POSIX compatibility (maps 'open' to '_open'), which most
4857	// users want. The /Za flag to cl.exe turns this off, but it's not
4858	// implemented in clang.
4859	CmdArgs.push_back(Elt: "--dependent-lib=oldnames");
4860	}
4861
4862	// All Arm64EC object files implicitly add softintrin.lib. This is necessary
4863	// even if the file doesn't actually refer to any of the routines because
4864	// the CRT itself has incomplete dependency markings.
4865	if (TC.getTriple().isWindowsArm64EC())
4866	CmdArgs.push_back(Elt: "--dependent-lib=softintrin");
4867	}
4868
4869	void Clang::ConstructJob(Compilation &C, const JobAction &JA,
4870	const InputInfo &Output, const InputInfoList &Inputs,
4871	const ArgList &Args, const char *LinkingOutput) const {
4872	const auto &TC = getToolChain();
4873	const llvm::Triple &RawTriple = TC.getTriple();
4874	const llvm::Triple &Triple = TC.getEffectiveTriple();
4875	const std::string &TripleStr = Triple.getTriple();
4876
4877	bool KernelOrKext =
4878	Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
4879	const Driver &D = TC.getDriver();
4880	ArgStringList CmdArgs;
4881
4882	assert(Inputs.size() >= 1 && "Must have at least one input.");
4883	// CUDA/HIP compilation may have multiple inputs (source file + results of
4884	// device-side compilations). OpenMP device jobs also take the host IR as a
4885	// second input. Module precompilation accepts a list of header files to
4886	// include as part of the module. API extraction accepts a list of header
4887	// files whose API information is emitted in the output. All other jobs are
4888	// expected to have exactly one input. SYCL compilation only expects a
4889	// single input.
4890	bool IsCuda = JA.isOffloading(OKind: Action::OFK_Cuda);
4891	bool IsCudaDevice = JA.isDeviceOffloading(OKind: Action::OFK_Cuda);
4892	bool IsHIP = JA.isOffloading(OKind: Action::OFK_HIP);
4893	bool IsHIPDevice = JA.isDeviceOffloading(OKind: Action::OFK_HIP);
4894	bool IsSYCL = JA.isOffloading(OKind: Action::OFK_SYCL);
4895	bool IsSYCLDevice = JA.isDeviceOffloading(OKind: Action::OFK_SYCL);
4896	bool IsOpenMPDevice = JA.isDeviceOffloading(OKind: Action::OFK_OpenMP);
4897	bool IsExtractAPI = isa<ExtractAPIJobAction>(Val: JA);
4898	bool IsDeviceOffloadAction = !(JA.isDeviceOffloading(OKind: Action::OFK_None) ||
4899	JA.isDeviceOffloading(OKind: Action::OFK_Host));
4900	bool IsHostOffloadingAction =
4901	JA.isHostOffloading(Action::OFK_OpenMP) ||
4902	JA.isHostOffloading(Action::OFK_SYCL) ||
4903	(JA.isHostOffloading(C.getActiveOffloadKinds()) &&
4904	Args.hasFlag(options::OPT_offload_new_driver,
4905	options::OPT_no_offload_new_driver,
4906	C.isOffloadingHostKind(Action::OFK_Cuda)));
4907
4908	bool IsRDCMode =
4909	Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false);
4910
4911	auto LTOMode = IsDeviceOffloadAction ? D.getOffloadLTOMode() : D.getLTOMode();
4912	bool IsUsingLTO = LTOMode != LTOK_None;
4913
4914	// Extract API doesn't have a main input file, so invent a fake one as a
4915	// placeholder.
4916	InputInfo ExtractAPIPlaceholderInput(Inputs[0].getType(), "extract-api",
4917	"extract-api");
4918
4919	const InputInfo &Input =
4920	IsExtractAPI ? ExtractAPIPlaceholderInput : Inputs[0];
4921
4922	InputInfoList ExtractAPIInputs;
4923	InputInfoList HostOffloadingInputs;
4924	const InputInfo *CudaDeviceInput = nullptr;
4925	const InputInfo *OpenMPDeviceInput = nullptr;
4926	for (const InputInfo &I : Inputs) {
4927	if (&I == &Input || I.getType() == types::TY_Nothing) {
4928	// This is the primary input or contains nothing.
4929	} else if (IsExtractAPI) {
4930	auto ExpectedInputType = ExtractAPIPlaceholderInput.getType();
4931	if (I.getType() != ExpectedInputType) {
4932	D.Diag(diag::err_drv_extract_api_wrong_kind)
4933	<< I.getFilename() << types::getTypeName(I.getType())
4934	<< types::getTypeName(ExpectedInputType);
4935	}
4936	ExtractAPIInputs.push_back(Elt: I);
4937	} else if (IsHostOffloadingAction) {
4938	HostOffloadingInputs.push_back(Elt: I);
4939	} else if ((IsCuda || IsHIP) && !CudaDeviceInput) {
4940	CudaDeviceInput = &I;
4941	} else if (IsOpenMPDevice && !OpenMPDeviceInput) {
4942	OpenMPDeviceInput = &I;
4943	} else {
4944	llvm_unreachable("unexpectedly given multiple inputs");
4945	}
4946	}
4947
4948	const llvm::Triple *AuxTriple =
4949	(IsCuda || IsHIP) ? TC.getAuxTriple() : nullptr;
4950	bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();
4951	bool IsUEFI = RawTriple.isUEFI();
4952	bool IsIAMCU = RawTriple.isOSIAMCU();
4953
4954	// Adjust IsWindowsXYZ for CUDA/HIP/SYCL compilations. Even when compiling in
4955	// device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not
4956	// Windows), we need to pass Windows-specific flags to cc1.
4957	if (IsCuda || IsHIP || IsSYCL)
4958	IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();
4959
4960	// C++ is not supported for IAMCU.
4961	if (IsIAMCU && types::isCXX(Input.getType()))
4962	D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
4963
4964	// Invoke ourselves in -cc1 mode.
4965	//
4966	// FIXME: Implement custom jobs for internal actions.
4967	CmdArgs.push_back(Elt: "-cc1");
4968
4969	// Add the "effective" target triple.
4970	CmdArgs.push_back(Elt: "-triple");
4971	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TripleStr));
4972
4973	if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {
4974	DumpCompilationDatabase(C, Filename: MJ->getValue(), Target: TripleStr, Output, Input, Args);
4975	Args.ClaimAllArgs(options::OPT_MJ);
4976	} else if (const Arg *GenCDBFragment =
4977	Args.getLastArg(options::OPT_gen_cdb_fragment_path)) {
4978	DumpCompilationDatabaseFragmentToDir(Dir: GenCDBFragment->getValue(), C,
4979	Target: TripleStr, Output, Input, Args);
4980	Args.ClaimAllArgs(options::OPT_gen_cdb_fragment_path);
4981	}
4982
4983	if (IsCuda || IsHIP) {
4984	// We have to pass the triple of the host if compiling for a CUDA/HIP device
4985	// and vice-versa.
4986	std::string NormalizedTriple;
4987	if (JA.isDeviceOffloading(OKind: Action::OFK_Cuda) ||
4988	JA.isDeviceOffloading(OKind: Action::OFK_HIP))
4989	NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
4990	->getTriple()
4991	.normalize();
4992	else {
4993	// Host-side compilation.
4994	NormalizedTriple =
4995	(IsCuda ? C.getSingleOffloadToolChain<Action::OFK_Cuda>()
4996	: C.getSingleOffloadToolChain<Action::OFK_HIP>())
4997	->getTriple()
4998	.normalize();
4999	if (IsCuda) {
5000	// We need to figure out which CUDA version we're compiling for, as that
5001	// determines how we load and launch GPU kernels.
5002	auto *CTC = static_cast<const toolchains::CudaToolChain *>(
5003	C.getSingleOffloadToolChain<Action::OFK_Cuda>());
5004	assert(CTC && "Expected valid CUDA Toolchain.");
5005	if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)
5006	CmdArgs.push_back(Elt: Args.MakeArgString(
5007	Str: Twine("-target-sdk-version=") +
5008	CudaVersionToString(V: CTC->CudaInstallation.version())));
5009	// Unsized function arguments used for variadics were introduced in
5010	// CUDA-9.0. We still do not support generating code that actually uses
5011	// variadic arguments yet, but we do need to allow parsing them as
5012	// recent CUDA headers rely on that.
5013	// https://github.com/llvm/llvm-project/issues/58410
5014	if (CTC->CudaInstallation.version() >= CudaVersion::CUDA_90)
5015	CmdArgs.push_back(Elt: "-fcuda-allow-variadic-functions");
5016	}
5017	}
5018	CmdArgs.push_back(Elt: "-aux-triple");
5019	CmdArgs.push_back(Elt: Args.MakeArgString(Str: NormalizedTriple));
5020
5021	if (JA.isDeviceOffloading(OKind: Action::OFK_HIP) &&
5022	(getToolChain().getTriple().isAMDGPU() ||
5023	(getToolChain().getTriple().isSPIRV() &&
5024	getToolChain().getTriple().getVendor() == llvm::Triple::AMD))) {
5025	// Device side compilation printf
5026	if (Args.getLastArg(options::OPT_mprintf_kind_EQ)) {
5027	CmdArgs.push_back(Args.MakeArgString(
5028	"-mprintf-kind=" +
5029	Args.getLastArgValue(options::OPT_mprintf_kind_EQ)));
5030	// Force compiler error on invalid conversion specifiers
5031	CmdArgs.push_back(
5032	Elt: Args.MakeArgString(Str: "-Werror=format-invalid-specifier"));
5033	}
5034	}
5035	}
5036
5037	// Optimization level for CodeGen.
5038	if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {
5039	if (A->getOption().matches(options::OPT_O4)) {
5040	CmdArgs.push_back(Elt: "-O3");
5041	D.Diag(diag::warn_O4_is_O3);
5042	} else {
5043	A->render(Args, Output&: CmdArgs);
5044	}
5045	}
5046
5047	// Unconditionally claim the printf option now to avoid unused diagnostic.
5048	if (const Arg *PF = Args.getLastArg(options::OPT_mprintf_kind_EQ))
5049	PF->claim();
5050
5051	if (IsSYCL) {
5052	if (IsSYCLDevice) {
5053	// Host triple is needed when doing SYCL device compilations.
5054	llvm::Triple AuxT = C.getDefaultToolChain().getTriple();
5055	std::string NormalizedTriple = AuxT.normalize();
5056	CmdArgs.push_back(Elt: "-aux-triple");
5057	CmdArgs.push_back(Elt: Args.MakeArgString(Str: NormalizedTriple));
5058
5059	// We want to compile sycl kernels.
5060	CmdArgs.push_back(Elt: "-fsycl-is-device");
5061
5062	// Set O2 optimization level by default
5063	if (!Args.getLastArg(options::OPT_O_Group))
5064	CmdArgs.push_back(Elt: "-O2");
5065	} else {
5066	// Add any options that are needed specific to SYCL offload while
5067	// performing the host side compilation.
5068
5069	// Let the front-end host compilation flow know about SYCL offload
5070	// compilation.
5071	CmdArgs.push_back(Elt: "-fsycl-is-host");
5072	}
5073
5074	// Set options for both host and device.
5075	Arg *SYCLStdArg = Args.getLastArg(options::OPT_sycl_std_EQ);
5076	if (SYCLStdArg) {
5077	SYCLStdArg->render(Args, Output&: CmdArgs);
5078	} else {
5079	// Ensure the default version in SYCL mode is 2020.
5080	CmdArgs.push_back(Elt: "-sycl-std=2020");
5081	}
5082	}
5083
5084	if (Args.hasArg(options::OPT_fclangir))
5085	CmdArgs.push_back(Elt: "-fclangir");
5086
5087	if (IsOpenMPDevice) {
5088	// We have to pass the triple of the host if compiling for an OpenMP device.
5089	std::string NormalizedTriple =
5090	C.getSingleOffloadToolChain<Action::OFK_Host>()
5091	->getTriple()
5092	.normalize();
5093	CmdArgs.push_back(Elt: "-aux-triple");
5094	CmdArgs.push_back(Elt: Args.MakeArgString(Str: NormalizedTriple));
5095	}
5096
5097	if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
5098	Triple.getArch() == llvm::Triple::thumb)) {
5099	unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
5100	unsigned Version = 0;
5101	bool Failure =
5102	Triple.getArchName().substr(Start: Offset).consumeInteger(Radix: 10, Result&: Version);
5103	if (Failure || Version < 7)
5104	D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
5105	<< TripleStr;
5106	}
5107
5108	// Push all default warning arguments that are specific to
5109	// the given target. These come before user provided warning options
5110	// are provided.
5111	TC.addClangWarningOptions(CC1Args&: CmdArgs);
5112
5113	// FIXME: Subclass ToolChain for SPIR and move this to addClangWarningOptions.
5114	if (Triple.isSPIR() || Triple.isSPIRV())
5115	CmdArgs.push_back(Elt: "-Wspir-compat");
5116
5117	// Select the appropriate action.
5118	RewriteKind rewriteKind = RK_None;
5119
5120	bool UnifiedLTO = false;
5121	if (IsUsingLTO) {
5122	UnifiedLTO = Args.hasFlag(options::OPT_funified_lto,
5123	options::OPT_fno_unified_lto, Triple.isPS());
5124	if (UnifiedLTO)
5125	CmdArgs.push_back(Elt: "-funified-lto");
5126	}
5127
5128	// If CollectArgsForIntegratedAssembler() isn't called below, claim the args
5129	// it claims when not running an assembler. Otherwise, clang would emit
5130	// "argument unused" warnings for assembler flags when e.g. adding "-E" to
5131	// flags while debugging something. That'd be somewhat inconvenient, and it's
5132	// also inconsistent with most other flags -- we don't warn on
5133	// -ffunction-sections not being used in -E mode either for example, even
5134	// though it's not really used either.
5135	if (!isa<AssembleJobAction>(Val: JA)) {
5136	// The args claimed here should match the args used in
5137	// CollectArgsForIntegratedAssembler().
5138	if (TC.useIntegratedAs()) {
5139	Args.ClaimAllArgs(options::OPT_mrelax_all);
5140	Args.ClaimAllArgs(options::OPT_mno_relax_all);
5141	Args.ClaimAllArgs(options::OPT_mincremental_linker_compatible);
5142	Args.ClaimAllArgs(options::OPT_mno_incremental_linker_compatible);
5143	switch (C.getDefaultToolChain().getArch()) {
5144	case llvm::Triple::arm:
5145	case llvm::Triple::armeb:
5146	case llvm::Triple::thumb:
5147	case llvm::Triple::thumbeb:
5148	Args.ClaimAllArgs(options::OPT_mimplicit_it_EQ);
5149	break;
5150	default:
5151	break;
5152	}
5153	}
5154	Args.ClaimAllArgs(options::OPT_Wa_COMMA);
5155	Args.ClaimAllArgs(options::OPT_Xassembler);
5156	Args.ClaimAllArgs(options::OPT_femit_dwarf_unwind_EQ);
5157	}
5158
5159	if (isa<AnalyzeJobAction>(Val: JA)) {
5160	assert(JA.getType() == types::TY_Plist && "Invalid output type.");
5161	CmdArgs.push_back(Elt: "-analyze");
5162	} else if (isa<PreprocessJobAction>(Val: JA)) {
5163	if (Output.getType() == types::TY_Dependencies)
5164	CmdArgs.push_back(Elt: "-Eonly");
5165	else {
5166	CmdArgs.push_back(Elt: "-E");
5167	if (Args.hasArg(options::OPT_rewrite_objc) &&
5168	!Args.hasArg(options::OPT_g_Group))
5169	CmdArgs.push_back(Elt: "-P");
5170	else if (JA.getType() == types::TY_PP_CXXHeaderUnit)
5171	CmdArgs.push_back(Elt: "-fdirectives-only");
5172	}
5173	} else if (isa<AssembleJobAction>(Val: JA)) {
5174	CmdArgs.push_back(Elt: "-emit-obj");
5175
5176	CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
5177
5178	// Also ignore explicit -force_cpusubtype_ALL option.
5179	(void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
5180	} else if (isa<PrecompileJobAction>(Val: JA)) {
5181	if (JA.getType() == types::TY_Nothing)
5182	CmdArgs.push_back(Elt: "-fsyntax-only");
5183	else if (JA.getType() == types::TY_ModuleFile)
5184	CmdArgs.push_back(Elt: "-emit-module-interface");
5185	else if (JA.getType() == types::TY_HeaderUnit)
5186	CmdArgs.push_back(Elt: "-emit-header-unit");
5187	else
5188	CmdArgs.push_back(Elt: "-emit-pch");
5189	} else if (isa<VerifyPCHJobAction>(Val: JA)) {
5190	CmdArgs.push_back(Elt: "-verify-pch");
5191	} else if (isa<ExtractAPIJobAction>(Val: JA)) {
5192	assert(JA.getType() == types::TY_API_INFO &&
5193	"Extract API actions must generate a API information.");
5194	CmdArgs.push_back(Elt: "-extract-api");
5195
5196	if (Arg *PrettySGFArg = Args.getLastArg(options::OPT_emit_pretty_sgf))
5197	PrettySGFArg->render(Args, Output&: CmdArgs);
5198
5199	Arg *SymbolGraphDirArg = Args.getLastArg(options::OPT_symbol_graph_dir_EQ);
5200
5201	if (Arg *ProductNameArg = Args.getLastArg(options::OPT_product_name_EQ))
5202	ProductNameArg->render(Args, Output&: CmdArgs);
5203	if (Arg *ExtractAPIIgnoresFileArg =
5204	Args.getLastArg(options::OPT_extract_api_ignores_EQ))
5205	ExtractAPIIgnoresFileArg->render(Args, Output&: CmdArgs);
5206	if (Arg *EmitExtensionSymbolGraphs =
5207	Args.getLastArg(options::OPT_emit_extension_symbol_graphs)) {
5208	if (!SymbolGraphDirArg)
5209	D.Diag(diag::err_drv_missing_symbol_graph_dir);
5210
5211	EmitExtensionSymbolGraphs->render(Args, Output&: CmdArgs);
5212	}
5213	if (SymbolGraphDirArg)
5214	SymbolGraphDirArg->render(Args, Output&: CmdArgs);
5215	} else {
5216	assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
5217	"Invalid action for clang tool.");
5218	if (JA.getType() == types::TY_Nothing) {
5219	CmdArgs.push_back(Elt: "-fsyntax-only");
5220	} else if (JA.getType() == types::TY_LLVM_IR ||
5221	JA.getType() == types::TY_LTO_IR) {
5222	CmdArgs.push_back(Elt: "-emit-llvm");
5223	} else if (JA.getType() == types::TY_LLVM_BC ||
5224	JA.getType() == types::TY_LTO_BC) {
5225	// Emit textual llvm IR for AMDGPU offloading for -emit-llvm -S
5226	if (Triple.isAMDGCN() && IsOpenMPDevice && Args.hasArg(options::OPT_S) &&
5227	Args.hasArg(options::OPT_emit_llvm)) {
5228	CmdArgs.push_back(Elt: "-emit-llvm");
5229	} else {
5230	CmdArgs.push_back(Elt: "-emit-llvm-bc");
5231	}
5232	} else if (JA.getType() == types::TY_IFS ||
5233	JA.getType() == types::TY_IFS_CPP) {
5234	StringRef ArgStr =
5235	Args.hasArg(options::OPT_interface_stub_version_EQ)
5236	? Args.getLastArgValue(options::OPT_interface_stub_version_EQ)
5237	: "ifs-v1";
5238	CmdArgs.push_back(Elt: "-emit-interface-stubs");
5239	CmdArgs.push_back(
5240	Elt: Args.MakeArgString(Str: Twine("-interface-stub-version=") + ArgStr.str()));
5241	} else if (JA.getType() == types::TY_PP_Asm) {
5242	CmdArgs.push_back(Elt: "-S");
5243	} else if (JA.getType() == types::TY_AST) {
5244	CmdArgs.push_back(Elt: "-emit-pch");
5245	} else if (JA.getType() == types::TY_ModuleFile) {
5246	CmdArgs.push_back(Elt: "-module-file-info");
5247	} else if (JA.getType() == types::TY_RewrittenObjC) {
5248	CmdArgs.push_back(Elt: "-rewrite-objc");
5249	rewriteKind = RK_NonFragile;
5250	} else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
5251	CmdArgs.push_back(Elt: "-rewrite-objc");
5252	rewriteKind = RK_Fragile;
5253	} else if (JA.getType() == types::TY_CIR) {
5254	CmdArgs.push_back(Elt: "-emit-cir");
5255	} else {
5256	assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
5257	}
5258
5259	// Preserve use-list order by default when emitting bitcode, so that
5260	// loading the bitcode up in 'opt' or 'llc' and running passes gives the
5261	// same result as running passes here. For LTO, we don't need to preserve
5262	// the use-list order, since serialization to bitcode is part of the flow.
5263	if (JA.getType() == types::TY_LLVM_BC)
5264	CmdArgs.push_back(Elt: "-emit-llvm-uselists");
5265
5266	if (IsUsingLTO) {
5267	if (IsDeviceOffloadAction && !JA.isDeviceOffloading(Action::OFK_OpenMP) &&
5268	!Args.hasFlag(options::OPT_offload_new_driver,
5269	options::OPT_no_offload_new_driver,
5270	C.isOffloadingHostKind(Action::OFK_Cuda)) &&
5271	!Triple.isAMDGPU()) {
5272	D.Diag(diag::err_drv_unsupported_opt_for_target)
5273	<< Args.getLastArg(options::OPT_foffload_lto,
5274	options::OPT_foffload_lto_EQ)
5275	->getAsString(Args)
5276	<< Triple.getTriple();
5277	} else if (Triple.isNVPTX() && !IsRDCMode &&
5278	JA.isDeviceOffloading(OKind: Action::OFK_Cuda)) {
5279	D.Diag(diag::err_drv_unsupported_opt_for_language_mode)
5280	<< Args.getLastArg(options::OPT_foffload_lto,
5281	options::OPT_foffload_lto_EQ)
5282	->getAsString(Args)
5283	<< "-fno-gpu-rdc";
5284	} else {
5285	assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);
5286	CmdArgs.push_back(Elt: Args.MakeArgString(
5287	Str: Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));
5288	// PS4 uses the legacy LTO API, which does not support some of the
5289	// features enabled by -flto-unit.
5290	if (!RawTriple.isPS4() ||
5291	(D.getLTOMode() == LTOK_Full) || !UnifiedLTO)
5292	CmdArgs.push_back(Elt: "-flto-unit");
5293	}
5294	}
5295	}
5296
5297	Args.AddLastArg(CmdArgs, options::OPT_dumpdir);
5298
5299	if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
5300	if (!types::isLLVMIR(Input.getType()))
5301	D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);
5302	Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
5303	}
5304
5305	if (Triple.isPPC())
5306	Args.addOptInFlag(CmdArgs, options::OPT_mregnames,
5307	options::OPT_mno_regnames);
5308
5309	if (Args.getLastArg(options::OPT_fthin_link_bitcode_EQ))
5310	Args.AddLastArg(CmdArgs, options::OPT_fthin_link_bitcode_EQ);
5311
5312	if (Args.getLastArg(options::OPT_save_temps_EQ))
5313	Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
5314
5315	auto *MemProfArg = Args.getLastArg(options::OPT_fmemory_profile,
5316	options::OPT_fmemory_profile_EQ,
5317	options::OPT_fno_memory_profile);
5318	if (MemProfArg &&
5319	!MemProfArg->getOption().matches(options::OPT_fno_memory_profile))
5320	MemProfArg->render(Args, CmdArgs);
5321
5322	if (auto *MemProfUseArg =
5323	Args.getLastArg(options::OPT_fmemory_profile_use_EQ)) {
5324	if (MemProfArg)
5325	D.Diag(diag::err_drv_argument_not_allowed_with)
5326	<< MemProfUseArg->getAsString(Args) << MemProfArg->getAsString(Args);
5327	if (auto *PGOInstrArg = Args.getLastArg(options::OPT_fprofile_generate,
5328	options::OPT_fprofile_generate_EQ))
5329	D.Diag(diag::err_drv_argument_not_allowed_with)
5330	<< MemProfUseArg->getAsString(Args) << PGOInstrArg->getAsString(Args);
5331	MemProfUseArg->render(Args, CmdArgs);
5332	}
5333
5334	// Embed-bitcode option.
5335	// Only white-listed flags below are allowed to be embedded.
5336	if (C.getDriver().embedBitcodeInObject() && !IsUsingLTO &&
5337	(isa<BackendJobAction>(Val: JA) || isa<AssembleJobAction>(Val: JA))) {
5338	// Add flags implied by -fembed-bitcode.
5339	Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
5340	// Disable all llvm IR level optimizations.
5341	CmdArgs.push_back(Elt: "-disable-llvm-passes");
5342
5343	// Render target options.
5344	TC.addClangTargetOptions(DriverArgs: Args, CC1Args&: CmdArgs, DeviceOffloadKind: JA.getOffloadingDeviceKind());
5345
5346	// reject options that shouldn't be supported in bitcode
5347	// also reject kernel/kext
5348	static const constexpr unsigned kBitcodeOptionIgnorelist[] = {
5349	options::OPT_mkernel,
5350	options::OPT_fapple_kext,
5351	options::OPT_ffunction_sections,
5352	options::OPT_fno_function_sections,
5353	options::OPT_fdata_sections,
5354	options::OPT_fno_data_sections,
5355	options::OPT_fbasic_block_sections_EQ,
5356	options::OPT_funique_internal_linkage_names,
5357	options::OPT_fno_unique_internal_linkage_names,
5358	options::OPT_funique_section_names,
5359	options::OPT_fno_unique_section_names,
5360	options::OPT_funique_basic_block_section_names,
5361	options::OPT_fno_unique_basic_block_section_names,
5362	options::OPT_mrestrict_it,
5363	options::OPT_mno_restrict_it,
5364	options::OPT_mstackrealign,
5365	options::OPT_mno_stackrealign,
5366	options::OPT_mstack_alignment,
5367	options::OPT_mcmodel_EQ,
5368	options::OPT_mlong_calls,
5369	options::OPT_mno_long_calls,
5370	options::OPT_ggnu_pubnames,
5371	options::OPT_gdwarf_aranges,
5372	options::OPT_fdebug_types_section,
5373	options::OPT_fno_debug_types_section,
5374	options::OPT_fdwarf_directory_asm,
5375	options::OPT_fno_dwarf_directory_asm,
5376	options::OPT_mrelax_all,
5377	options::OPT_mno_relax_all,
5378	options::OPT_ftrap_function_EQ,
5379	options::OPT_ffixed_r9,
5380	options::OPT_mfix_cortex_a53_835769,
5381	options::OPT_mno_fix_cortex_a53_835769,
5382	options::OPT_ffixed_x18,
5383	options::OPT_mglobal_merge,
5384	options::OPT_mno_global_merge,
5385	options::OPT_mred_zone,
5386	options::OPT_mno_red_zone,
5387	options::OPT_Wa_COMMA,
5388	options::OPT_Xassembler,
5389	options::OPT_mllvm,
5390	options::OPT_mmlir,
5391	};
5392	for (const auto &A : Args)
5393	if (llvm::is_contained(kBitcodeOptionIgnorelist, A->getOption().getID()))
5394	D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();
5395
5396	// Render the CodeGen options that need to be passed.
5397	Args.addOptOutFlag(CmdArgs, options::OPT_foptimize_sibling_calls,
5398	options::OPT_fno_optimize_sibling_calls);
5399
5400	RenderFloatingPointOptions(TC, D, OFastEnabled: isOptimizationLevelFast(Args), Args,
5401	CmdArgs, JA);
5402
5403	// Render ABI arguments
5404	switch (TC.getArch()) {
5405	default: break;
5406	case llvm::Triple::arm:
5407	case llvm::Triple::armeb:
5408	case llvm::Triple::thumbeb:
5409	RenderARMABI(D, Triple, Args, CmdArgs);
5410	break;
5411	case llvm::Triple::aarch64:
5412	case llvm::Triple::aarch64_32:
5413	case llvm::Triple::aarch64_be:
5414	RenderAArch64ABI(Triple, Args, CmdArgs);
5415	break;
5416	}
5417
5418	// Input/Output file.
5419	if (Output.getType() == types::TY_Dependencies) {
5420	// Handled with other dependency code.
5421	} else if (Output.isFilename()) {
5422	CmdArgs.push_back(Elt: "-o");
5423	CmdArgs.push_back(Elt: Output.getFilename());
5424	} else {
5425	assert(Output.isNothing() && "Input output.");
5426	}
5427
5428	for (const auto &II : Inputs) {
5429	addDashXForInput(Args, Input: II, CmdArgs);
5430	if (II.isFilename())
5431	CmdArgs.push_back(Elt: II.getFilename());
5432	else
5433	II.getInputArg().renderAsInput(Args, Output&: CmdArgs);
5434	}
5435
5436	C.addCommand(C: std::make_unique<Command>(
5437	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args: D.getClangProgramPath(),
5438	args&: CmdArgs, args: Inputs, args: Output, args: D.getPrependArg()));
5439	return;
5440	}
5441
5442	if (C.getDriver().embedBitcodeMarkerOnly() && !IsUsingLTO)
5443	CmdArgs.push_back(Elt: "-fembed-bitcode=marker");
5444
5445	// We normally speed up the clang process a bit by skipping destructors at
5446	// exit, but when we're generating diagnostics we can rely on some of the
5447	// cleanup.
5448	if (!C.isForDiagnostics())
5449	CmdArgs.push_back(Elt: "-disable-free");
5450	CmdArgs.push_back(Elt: "-clear-ast-before-backend");
5451
5452	#ifdef NDEBUG
5453	const bool IsAssertBuild = false;
5454	#else
5455	const bool IsAssertBuild = true;
5456	#endif
5457
5458	// Disable the verification pass in asserts builds unless otherwise specified.
5459	if (Args.hasFlag(options::OPT_fno_verify_intermediate_code,
5460	options::OPT_fverify_intermediate_code, !IsAssertBuild)) {
5461	CmdArgs.push_back(Elt: "-disable-llvm-verifier");
5462	}
5463
5464	// Discard value names in assert builds unless otherwise specified.
5465	if (Args.hasFlag(options::OPT_fdiscard_value_names,
5466	options::OPT_fno_discard_value_names, !IsAssertBuild)) {
5467	if (Args.hasArg(options::OPT_fdiscard_value_names) &&
5468	llvm::any_of(Inputs, [](const clang::driver::InputInfo &II) {
5469	return types::isLLVMIR(II.getType());
5470	})) {
5471	D.Diag(diag::warn_ignoring_fdiscard_for_bitcode);
5472	}
5473	CmdArgs.push_back(Elt: "-discard-value-names");
5474	}
5475
5476	// Set the main file name, so that debug info works even with
5477	// -save-temps.
5478	CmdArgs.push_back(Elt: "-main-file-name");
5479	CmdArgs.push_back(Elt: getBaseInputName(Args, Input));
5480
5481	// Some flags which affect the language (via preprocessor
5482	// defines).
5483	if (Args.hasArg(options::OPT_static))
5484	CmdArgs.push_back(Elt: "-static-define");
5485
5486	Args.AddLastArg(CmdArgs, options::OPT_static_libclosure);
5487
5488	if (Args.hasArg(options::OPT_municode))
5489	CmdArgs.push_back(Elt: "-DUNICODE");
5490
5491	if (isa<AnalyzeJobAction>(Val: JA))
5492	RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);
5493
5494	if (isa<AnalyzeJobAction>(JA) ||
5495	(isa<PreprocessJobAction>(JA) && Args.hasArg(options::OPT__analyze)))
5496	CmdArgs.push_back(Elt: "-setup-static-analyzer");
5497
5498	// Enable compatilibily mode to avoid analyzer-config related errors.
5499	// Since we can't access frontend flags through hasArg, let's manually iterate
5500	// through them.
5501	bool FoundAnalyzerConfig = false;
5502	for (auto *Arg : Args.filtered(options::OPT_Xclang))
5503	if (StringRef(Arg->getValue()) == "-analyzer-config") {
5504	FoundAnalyzerConfig = true;
5505	break;
5506	}
5507	if (!FoundAnalyzerConfig)
5508	for (auto *Arg : Args.filtered(options::OPT_Xanalyzer))
5509	if (StringRef(Arg->getValue()) == "-analyzer-config") {
5510	FoundAnalyzerConfig = true;
5511	break;
5512	}
5513	if (FoundAnalyzerConfig)
5514	CmdArgs.push_back(Elt: "-analyzer-config-compatibility-mode=true");
5515
5516	CheckCodeGenerationOptions(D, Args);
5517
5518	unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);
5519	assert(FunctionAlignment <= 31 && "function alignment will be truncated!");
5520	if (FunctionAlignment) {
5521	CmdArgs.push_back(Elt: "-function-alignment");
5522	CmdArgs.push_back(Elt: Args.MakeArgString(Str: std::to_string(val: FunctionAlignment)));
5523	}
5524
5525	// We support -falign-loops=N where N is a power of 2. GCC supports more
5526	// forms.
5527	if (const Arg *A = Args.getLastArg(options::OPT_falign_loops_EQ)) {
5528	unsigned Value = 0;
5529	if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
5530	TC.getDriver().Diag(diag::err_drv_invalid_int_value)
5531	<< A->getAsString(Args) << A->getValue();
5532	else if (Value & (Value - 1))
5533	TC.getDriver().Diag(diag::err_drv_alignment_not_power_of_two)
5534	<< A->getAsString(Args) << A->getValue();
5535	// Treat =0 as unspecified (use the target preference).
5536	if (Value)
5537	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-falign-loops=" +
5538	Twine(std::min(a: Value, b: 65536u))));
5539	}
5540
5541	if (Triple.isOSzOS()) {
5542	// On z/OS some of the system header feature macros need to
5543	// be defined to enable most cross platform projects to build
5544	// successfully. Ths include the libc++ library. A
5545	// complicating factor is that users can define these
5546	// macros to the same or different values. We need to add
5547	// the definition for these macros to the compilation command
5548	// if the user hasn't already defined them.
5549
5550	auto findMacroDefinition = [&](const std::string &Macro) {
5551	auto MacroDefs = Args.getAllArgValues(options::OPT_D);
5552	return llvm::any_of(MacroDefs, [&](const std::string &M) {
5553	return M == Macro || M.find(Macro + '=') != std::string::npos;
5554	});
5555	};
5556
5557	// _UNIX03_WITHDRAWN is required for libcxx & porting.
5558	if (!findMacroDefinition("_UNIX03_WITHDRAWN"))
5559	CmdArgs.push_back(Elt: "-D_UNIX03_WITHDRAWN");
5560	// _OPEN_DEFAULT is required for XL compat
5561	if (!findMacroDefinition("_OPEN_DEFAULT"))
5562	CmdArgs.push_back(Elt: "-D_OPEN_DEFAULT");
5563	if (D.CCCIsCXX() || types::isCXX(Id: Input.getType())) {
5564	// _XOPEN_SOURCE=600 is required for libcxx.
5565	if (!findMacroDefinition("_XOPEN_SOURCE"))
5566	CmdArgs.push_back(Elt: "-D_XOPEN_SOURCE=600");
5567	}
5568	}
5569
5570	llvm::Reloc::Model RelocationModel;
5571	unsigned PICLevel;
5572	bool IsPIE;
5573	std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) = ParsePICArgs(ToolChain: TC, Args);
5574	Arg *LastPICDataRelArg =
5575	Args.getLastArg(options::OPT_mno_pic_data_is_text_relative,
5576	options::OPT_mpic_data_is_text_relative);
5577	bool NoPICDataIsTextRelative = false;
5578	if (LastPICDataRelArg) {
5579	if (LastPICDataRelArg->getOption().matches(
5580	options::OPT_mno_pic_data_is_text_relative)) {
5581	NoPICDataIsTextRelative = true;
5582	if (!PICLevel)
5583	D.Diag(diag::err_drv_argument_only_allowed_with)
5584	<< "-mno-pic-data-is-text-relative"
5585	<< "-fpic/-fpie";
5586	}
5587	if (!Triple.isSystemZ())
5588	D.Diag(diag::err_drv_unsupported_opt_for_target)
5589	<< (NoPICDataIsTextRelative ? "-mno-pic-data-is-text-relative"
5590	: "-mpic-data-is-text-relative")
5591	<< RawTriple.str();
5592	}
5593
5594	bool IsROPI = RelocationModel == llvm::Reloc::ROPI ||
5595	RelocationModel == llvm::Reloc::ROPI_RWPI;
5596	bool IsRWPI = RelocationModel == llvm::Reloc::RWPI ||
5597	RelocationModel == llvm::Reloc::ROPI_RWPI;
5598
5599	if (Args.hasArg(options::OPT_mcmse) &&
5600	!Args.hasArg(options::OPT_fallow_unsupported)) {
5601	if (IsROPI)
5602	D.Diag(diag::err_cmse_pi_are_incompatible) << IsROPI;
5603	if (IsRWPI)
5604	D.Diag(diag::err_cmse_pi_are_incompatible) << !IsRWPI;
5605	}
5606
5607	if (IsROPI && types::isCXX(Input.getType()) &&
5608	!Args.hasArg(options::OPT_fallow_unsupported))
5609	D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
5610
5611	const char *RMName = RelocationModelName(Model: RelocationModel);
5612	if (RMName) {
5613	CmdArgs.push_back(Elt: "-mrelocation-model");
5614	CmdArgs.push_back(Elt: RMName);
5615	}
5616	if (PICLevel > 0) {
5617	CmdArgs.push_back(Elt: "-pic-level");
5618	CmdArgs.push_back(Elt: PICLevel == 1 ? "1" : "2");
5619	if (IsPIE)
5620	CmdArgs.push_back(Elt: "-pic-is-pie");
5621	if (NoPICDataIsTextRelative)
5622	CmdArgs.push_back(Elt: "-mcmodel=medium");
5623	}
5624
5625	if (RelocationModel == llvm::Reloc::ROPI ||
5626	RelocationModel == llvm::Reloc::ROPI_RWPI)
5627	CmdArgs.push_back(Elt: "-fropi");
5628	if (RelocationModel == llvm::Reloc::RWPI ||
5629	RelocationModel == llvm::Reloc::ROPI_RWPI)
5630	CmdArgs.push_back(Elt: "-frwpi");
5631
5632	if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
5633	CmdArgs.push_back(Elt: "-meabi");
5634	CmdArgs.push_back(Elt: A->getValue());
5635	}
5636
5637	// -fsemantic-interposition is forwarded to CC1: set the
5638	// "SemanticInterposition" metadata to 1 (make some linkages interposable) and
5639	// make default visibility external linkage definitions dso_preemptable.
5640	//
5641	// -fno-semantic-interposition: if the target supports .Lfoo$local local
5642	// aliases (make default visibility external linkage definitions dso_local).
5643	// This is the CC1 default for ELF to match COFF/Mach-O.
5644	//
5645	// Otherwise use Clang's traditional behavior: like
5646	// -fno-semantic-interposition but local aliases are not used. So references
5647	// can be interposed if not optimized out.
5648	if (Triple.isOSBinFormatELF()) {
5649	Arg *A = Args.getLastArg(options::OPT_fsemantic_interposition,
5650	options::OPT_fno_semantic_interposition);
5651	if (RelocationModel != llvm::Reloc::Static && !IsPIE) {
5652	// The supported targets need to call AsmPrinter::getSymbolPreferLocal.
5653	bool SupportsLocalAlias =
5654	Triple.isAArch64() || Triple.isRISCV() || Triple.isX86();
5655	if (!A)
5656	CmdArgs.push_back(Elt: "-fhalf-no-semantic-interposition");
5657	else if (A->getOption().matches(options::OPT_fsemantic_interposition))
5658	A->render(Args, Output&: CmdArgs);
5659	else if (!SupportsLocalAlias)
5660	CmdArgs.push_back(Elt: "-fhalf-no-semantic-interposition");
5661	}
5662	}
5663
5664	{
5665	std::string Model;
5666	if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {
5667	if (!TC.isThreadModelSupported(A->getValue()))
5668	D.Diag(diag::err_drv_invalid_thread_model_for_target)
5669	<< A->getValue() << A->getAsString(Args);
5670	Model = A->getValue();
5671	} else
5672	Model = TC.getThreadModel();
5673	if (Model != "posix") {
5674	CmdArgs.push_back(Elt: "-mthread-model");
5675	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Model));
5676	}
5677	}
5678
5679	if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
5680	StringRef Name = A->getValue();
5681	if (Name == "SVML") {
5682	if (Triple.getArch() != llvm::Triple::x86 &&
5683	Triple.getArch() != llvm::Triple::x86_64)
5684	D.Diag(diag::err_drv_unsupported_opt_for_target)
5685	<< Name << Triple.getArchName();
5686	} else if (Name == "libmvec" || Name == "AMDLIBM") {
5687	if (Triple.getArch() != llvm::Triple::x86 &&
5688	Triple.getArch() != llvm::Triple::x86_64)
5689	D.Diag(diag::err_drv_unsupported_opt_for_target)
5690	<< Name << Triple.getArchName();
5691	} else if (Name == "SLEEF" || Name == "ArmPL") {
5692	if (Triple.getArch() != llvm::Triple::aarch64 &&
5693	Triple.getArch() != llvm::Triple::aarch64_be &&
5694	Triple.getArch() != llvm::Triple::riscv64)
5695	D.Diag(diag::err_drv_unsupported_opt_for_target)
5696	<< Name << Triple.getArchName();
5697	}
5698	A->render(Args, Output&: CmdArgs);
5699	}
5700
5701	if (Args.hasFlag(options::OPT_fmerge_all_constants,
5702	options::OPT_fno_merge_all_constants, false))
5703	CmdArgs.push_back(Elt: "-fmerge-all-constants");
5704
5705	Args.addOptOutFlag(CmdArgs, options::OPT_fdelete_null_pointer_checks,
5706	options::OPT_fno_delete_null_pointer_checks);
5707
5708	// LLVM Code Generator Options.
5709
5710	if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ_quadword_atomics)) {
5711	if (!Triple.isOSAIX() || Triple.isPPC32())
5712	D.Diag(diag::err_drv_unsupported_opt_for_target)
5713	<< A->getSpelling() << RawTriple.str();
5714	CmdArgs.push_back(Elt: "-mabi=quadword-atomics");
5715	}
5716
5717	if (Arg *A = Args.getLastArg(options::OPT_mlong_double_128)) {
5718	// Emit the unsupported option error until the Clang's library integration
5719	// support for 128-bit long double is available for AIX.
5720	if (Triple.isOSAIX())
5721	D.Diag(diag::err_drv_unsupported_opt_for_target)
5722	<< A->getSpelling() << RawTriple.str();
5723	}
5724
5725	if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
5726	StringRef V = A->getValue(), V1 = V;
5727	unsigned Size;
5728	if (V1.consumeInteger(Radix: 10, Result&: Size) || !V1.empty())
5729	D.Diag(diag::err_drv_invalid_argument_to_option)
5730	<< V << A->getOption().getName();
5731	else
5732	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fwarn-stack-size=" + V));
5733	}
5734
5735	Args.addOptOutFlag(CmdArgs, options::OPT_fjump_tables,
5736	options::OPT_fno_jump_tables);
5737	Args.addOptInFlag(CmdArgs, options::OPT_fprofile_sample_accurate,
5738	options::OPT_fno_profile_sample_accurate);
5739	Args.addOptOutFlag(CmdArgs, options::OPT_fpreserve_as_comments,
5740	options::OPT_fno_preserve_as_comments);
5741
5742	if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
5743	CmdArgs.push_back(Elt: "-mregparm");
5744	CmdArgs.push_back(Elt: A->getValue());
5745	}
5746
5747	if (Arg *A = Args.getLastArg(options::OPT_maix_struct_return,
5748	options::OPT_msvr4_struct_return)) {
5749	if (!TC.getTriple().isPPC32()) {
5750	D.Diag(diag::err_drv_unsupported_opt_for_target)
5751	<< A->getSpelling() << RawTriple.str();
5752	} else if (A->getOption().matches(options::OPT_maix_struct_return)) {
5753	CmdArgs.push_back(Elt: "-maix-struct-return");
5754	} else {
5755	assert(A->getOption().matches(options::OPT_msvr4_struct_return));
5756	CmdArgs.push_back(Elt: "-msvr4-struct-return");
5757	}
5758	}
5759
5760	if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
5761	options::OPT_freg_struct_return)) {
5762	if (TC.getArch() != llvm::Triple::x86) {
5763	D.Diag(diag::err_drv_unsupported_opt_for_target)
5764	<< A->getSpelling() << RawTriple.str();
5765	} else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
5766	CmdArgs.push_back(Elt: "-fpcc-struct-return");
5767	} else {
5768	assert(A->getOption().matches(options::OPT_freg_struct_return));
5769	CmdArgs.push_back(Elt: "-freg-struct-return");
5770	}
5771	}
5772
5773	if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false)) {
5774	if (Triple.getArch() == llvm::Triple::m68k)
5775	CmdArgs.push_back(Elt: "-fdefault-calling-conv=rtdcall");
5776	else
5777	CmdArgs.push_back(Elt: "-fdefault-calling-conv=stdcall");
5778	}
5779
5780	if (Args.hasArg(options::OPT_fenable_matrix)) {
5781	// enable-matrix is needed by both the LangOpts and by LLVM.
5782	CmdArgs.push_back(Elt: "-fenable-matrix");
5783	CmdArgs.push_back(Elt: "-mllvm");
5784	CmdArgs.push_back(Elt: "-enable-matrix");
5785	}
5786
5787	CodeGenOptions::FramePointerKind FPKeepKind =
5788	getFramePointerKind(Args, Triple: RawTriple);
5789	const char *FPKeepKindStr = nullptr;
5790	switch (FPKeepKind) {
5791	case CodeGenOptions::FramePointerKind::None:
5792	FPKeepKindStr = "-mframe-pointer=none";
5793	break;
5794	case CodeGenOptions::FramePointerKind::Reserved:
5795	FPKeepKindStr = "-mframe-pointer=reserved";
5796	break;
5797	case CodeGenOptions::FramePointerKind::NonLeaf:
5798	FPKeepKindStr = "-mframe-pointer=non-leaf";
5799	break;
5800	case CodeGenOptions::FramePointerKind::All:
5801	FPKeepKindStr = "-mframe-pointer=all";
5802	break;
5803	}
5804	assert(FPKeepKindStr && "unknown FramePointerKind");
5805	CmdArgs.push_back(Elt: FPKeepKindStr);
5806
5807	Args.addOptOutFlag(CmdArgs, options::OPT_fzero_initialized_in_bss,
5808	options::OPT_fno_zero_initialized_in_bss);
5809
5810	bool OFastEnabled = isOptimizationLevelFast(Args);
5811	if (OFastEnabled)
5812	D.Diag(diag::warn_drv_deprecated_arg_ofast);
5813	// If -Ofast is the optimization level, then -fstrict-aliasing should be
5814	// enabled. This alias option is being used to simplify the hasFlag logic.
5815	OptSpecifier StrictAliasingAliasOption =
5816	OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
5817	// We turn strict aliasing off by default if we're Windows MSVC since MSVC
5818	// doesn't do any TBAA.
5819	if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
5820	options::OPT_fno_strict_aliasing,
5821	!IsWindowsMSVC && !IsUEFI))
5822	CmdArgs.push_back(Elt: "-relaxed-aliasing");
5823	if (Args.hasFlag(options::OPT_fno_pointer_tbaa, options::OPT_fpointer_tbaa,
5824	false))
5825	CmdArgs.push_back(Elt: "-no-pointer-tbaa");
5826	if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
5827	options::OPT_fno_struct_path_tbaa, true))
5828	CmdArgs.push_back(Elt: "-no-struct-path-tbaa");
5829	Args.addOptInFlag(CmdArgs, options::OPT_fstrict_enums,
5830	options::OPT_fno_strict_enums);
5831	Args.addOptOutFlag(CmdArgs, options::OPT_fstrict_return,
5832	options::OPT_fno_strict_return);
5833	Args.addOptInFlag(CmdArgs, options::OPT_fallow_editor_placeholders,
5834	options::OPT_fno_allow_editor_placeholders);
5835	Args.addOptInFlag(CmdArgs, options::OPT_fstrict_vtable_pointers,
5836	options::OPT_fno_strict_vtable_pointers);
5837	Args.addOptInFlag(CmdArgs, options::OPT_fforce_emit_vtables,
5838	options::OPT_fno_force_emit_vtables);
5839	Args.addOptOutFlag(CmdArgs, options::OPT_foptimize_sibling_calls,
5840	options::OPT_fno_optimize_sibling_calls);
5841	Args.addOptOutFlag(CmdArgs, options::OPT_fescaping_block_tail_calls,
5842	options::OPT_fno_escaping_block_tail_calls);
5843
5844	Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,
5845	options::OPT_fno_fine_grained_bitfield_accesses);
5846
5847	Args.AddLastArg(CmdArgs, options::OPT_fexperimental_relative_cxx_abi_vtables,
5848	options::OPT_fno_experimental_relative_cxx_abi_vtables);
5849
5850	Args.AddLastArg(CmdArgs, options::OPT_fexperimental_omit_vtable_rtti,
5851	options::OPT_fno_experimental_omit_vtable_rtti);
5852
5853	Args.AddLastArg(CmdArgs, options::OPT_fdisable_block_signature_string,
5854	options::OPT_fno_disable_block_signature_string);
5855
5856	// Handle segmented stacks.
5857	Args.addOptInFlag(CmdArgs, options::OPT_fsplit_stack,
5858	options::OPT_fno_split_stack);
5859
5860	// -fprotect-parens=0 is default.
5861	if (Args.hasFlag(options::OPT_fprotect_parens,
5862	options::OPT_fno_protect_parens, false))
5863	CmdArgs.push_back(Elt: "-fprotect-parens");
5864
5865	RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);
5866
5867	Args.addOptInFlag(CmdArgs, options::OPT_fatomic_remote_memory,
5868	options::OPT_fno_atomic_remote_memory);
5869	Args.addOptInFlag(CmdArgs, options::OPT_fatomic_fine_grained_memory,
5870	options::OPT_fno_atomic_fine_grained_memory);
5871	Args.addOptInFlag(CmdArgs, options::OPT_fatomic_ignore_denormal_mode,
5872	options::OPT_fno_atomic_ignore_denormal_mode);
5873
5874	if (Arg *A = Args.getLastArg(options::OPT_fextend_args_EQ)) {
5875	const llvm::Triple::ArchType Arch = TC.getArch();
5876	if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
5877	StringRef V = A->getValue();
5878	if (V == "64")
5879	CmdArgs.push_back(Elt: "-fextend-arguments=64");
5880	else if (V != "32")
5881	D.Diag(diag::err_drv_invalid_argument_to_option)
5882	<< A->getValue() << A->getOption().getName();
5883	} else
5884	D.Diag(diag::err_drv_unsupported_opt_for_target)
5885	<< A->getOption().getName() << TripleStr;
5886	}
5887
5888	if (Arg *A = Args.getLastArg(options::OPT_mdouble_EQ)) {
5889	if (TC.getArch() == llvm::Triple::avr)
5890	A->render(Args, Output&: CmdArgs);
5891	else
5892	D.Diag(diag::err_drv_unsupported_opt_for_target)
5893	<< A->getAsString(Args) << TripleStr;
5894	}
5895
5896	if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) {
5897	if (TC.getTriple().isX86())
5898	A->render(Args, Output&: CmdArgs);
5899	else if (TC.getTriple().isPPC() &&
5900	(A->getOption().getID() != options::OPT_mlong_double_80))
5901	A->render(Args, Output&: CmdArgs);
5902	else
5903	D.Diag(diag::err_drv_unsupported_opt_for_target)
5904	<< A->getAsString(Args) << TripleStr;
5905	}
5906
5907	// Decide whether to use verbose asm. Verbose assembly is the default on
5908	// toolchains which have the integrated assembler on by default.
5909	bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();
5910	if (!Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
5911	IsIntegratedAssemblerDefault))
5912	CmdArgs.push_back(Elt: "-fno-verbose-asm");
5913
5914	// Parse 'none' or '$major.$minor'. Disallow -fbinutils-version=0 because we
5915	// use that to indicate the MC default in the backend.
5916	if (Arg *A = Args.getLastArg(options::OPT_fbinutils_version_EQ)) {
5917	StringRef V = A->getValue();
5918	unsigned Num;
5919	if (V == "none")
5920	A->render(Args, Output&: CmdArgs);
5921	else if (!V.consumeInteger(Radix: 10, Result&: Num) && Num > 0 &&
5922	(V.empty() || (V.consume_front(Prefix: ".") &&
5923	!V.consumeInteger(Radix: 10, Result&: Num) && V.empty())))
5924	A->render(Args, Output&: CmdArgs);
5925	else
5926	D.Diag(diag::err_drv_invalid_argument_to_option)
5927	<< A->getValue() << A->getOption().getName();
5928	}
5929
5930	// If toolchain choose to use MCAsmParser for inline asm don't pass the
5931	// option to disable integrated-as explicitly.
5932	if (!TC.useIntegratedAs() && !TC.parseInlineAsmUsingAsmParser())
5933	CmdArgs.push_back(Elt: "-no-integrated-as");
5934
5935	if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
5936	CmdArgs.push_back(Elt: "-mdebug-pass");
5937	CmdArgs.push_back(Elt: "Structure");
5938	}
5939	if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
5940	CmdArgs.push_back(Elt: "-mdebug-pass");
5941	CmdArgs.push_back(Elt: "Arguments");
5942	}
5943
5944	// Enable -mconstructor-aliases except on darwin, where we have to work around
5945	// a linker bug (see https://openradar.appspot.com/7198997), and CUDA device
5946	// code, where aliases aren't supported.
5947	if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
5948	CmdArgs.push_back(Elt: "-mconstructor-aliases");
5949
5950	// Darwin's kernel doesn't support guard variables; just die if we
5951	// try to use them.
5952	if (KernelOrKext && RawTriple.isOSDarwin())
5953	CmdArgs.push_back(Elt: "-fforbid-guard-variables");
5954
5955	if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
5956	Triple.isWindowsGNUEnvironment())) {
5957	CmdArgs.push_back(Elt: "-mms-bitfields");
5958	}
5959
5960	if (Triple.isWindowsGNUEnvironment()) {
5961	Args.addOptOutFlag(CmdArgs, options::OPT_fauto_import,
5962	options::OPT_fno_auto_import);
5963	}
5964
5965	if (Args.hasFlag(options::OPT_fms_volatile, options::OPT_fno_ms_volatile,
5966	Triple.isX86() && IsWindowsMSVC))
5967	CmdArgs.push_back(Elt: "-fms-volatile");
5968
5969	// Non-PIC code defaults to -fdirect-access-external-data while PIC code
5970	// defaults to -fno-direct-access-external-data. Pass the option if different
5971	// from the default.
5972	if (Arg *A = Args.getLastArg(options::OPT_fdirect_access_external_data,
5973	options::OPT_fno_direct_access_external_data)) {
5974	if (A->getOption().matches(options::OPT_fdirect_access_external_data) !=
5975	(PICLevel == 0))
5976	A->render(Args, Output&: CmdArgs);
5977	} else if (PICLevel == 0 && Triple.isLoongArch()) {
5978	// Some targets default to -fno-direct-access-external-data even for
5979	// -fno-pic.
5980	CmdArgs.push_back(Elt: "-fno-direct-access-external-data");
5981	}
5982
5983	if (Triple.isOSBinFormatELF() && (Triple.isAArch64() || Triple.isX86()))
5984	Args.addOptOutFlag(CmdArgs, options::OPT_fplt, options::OPT_fno_plt);
5985
5986	// -fhosted is default.
5987	// TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
5988	// use Freestanding.
5989	bool Freestanding =
5990	Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
5991	KernelOrKext;
5992	if (Freestanding)
5993	CmdArgs.push_back(Elt: "-ffreestanding");
5994
5995	Args.AddLastArg(CmdArgs, options::OPT_fno_knr_functions);
5996
5997	// This is a coarse approximation of what llvm-gcc actually does, both
5998	// -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
5999	// complicated ways.
6000	auto SanitizeArgs = TC.getSanitizerArgs(JobArgs: Args);
6001
6002	bool IsAsyncUnwindTablesDefault =
6003	TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Asynchronous;
6004	bool IsSyncUnwindTablesDefault =
6005	TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Synchronous;
6006
6007	bool AsyncUnwindTables = Args.hasFlag(
6008	options::OPT_fasynchronous_unwind_tables,
6009	options::OPT_fno_asynchronous_unwind_tables,
6010	(IsAsyncUnwindTablesDefault || SanitizeArgs.needsUnwindTables()) &&
6011	!Freestanding);
6012	bool UnwindTables =
6013	Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
6014	IsSyncUnwindTablesDefault && !Freestanding);
6015	if (AsyncUnwindTables)
6016	CmdArgs.push_back(Elt: "-funwind-tables=2");
6017	else if (UnwindTables)
6018	CmdArgs.push_back(Elt: "-funwind-tables=1");
6019
6020	// Prepare `-aux-target-cpu` and `-aux-target-feature` unless
6021	// `--gpu-use-aux-triple-only` is specified.
6022	if (!Args.getLastArg(options::OPT_gpu_use_aux_triple_only) &&
6023	(IsCudaDevice || IsHIPDevice || IsSYCLDevice)) {
6024	const ArgList &HostArgs =
6025	C.getArgsForToolChain(TC: nullptr, BoundArch: StringRef(), DeviceOffloadKind: Action::OFK_None);
6026	std::string HostCPU =
6027	getCPUName(D, Args: HostArgs, T: *TC.getAuxTriple(), /*FromAs*/ false);
6028	if (!HostCPU.empty()) {
6029	CmdArgs.push_back(Elt: "-aux-target-cpu");
6030	CmdArgs.push_back(Elt: Args.MakeArgString(Str: HostCPU));
6031	}
6032	getTargetFeatures(D, Triple: *TC.getAuxTriple(), Args: HostArgs, CmdArgs,
6033	/*ForAS*/ false, /*IsAux*/ true);
6034	}
6035
6036	TC.addClangTargetOptions(DriverArgs: Args, CC1Args&: CmdArgs, DeviceOffloadKind: JA.getOffloadingDeviceKind());
6037
6038	addMCModel(D, Args, Triple, RelocationModel, CmdArgs);
6039
6040	if (Arg *A = Args.getLastArg(options::OPT_mtls_size_EQ)) {
6041	StringRef Value = A->getValue();
6042	unsigned TLSSize = 0;
6043	Value.getAsInteger(Radix: 10, Result&: TLSSize);
6044	if (!Triple.isAArch64() || !Triple.isOSBinFormatELF())
6045	D.Diag(diag::err_drv_unsupported_opt_for_target)
6046	<< A->getOption().getName() << TripleStr;
6047	if (TLSSize != 12 && TLSSize != 24 && TLSSize != 32 && TLSSize != 48)
6048	D.Diag(diag::err_drv_invalid_int_value)
6049	<< A->getOption().getName() << Value;
6050	Args.AddLastArg(CmdArgs, options::OPT_mtls_size_EQ);
6051	}
6052
6053	if (isTLSDESCEnabled(TC, Args))
6054	CmdArgs.push_back(Elt: "-enable-tlsdesc");
6055
6056	// Add the target cpu
6057	std::string CPU = getCPUName(D, Args, T: Triple, /*FromAs*/ false);
6058	if (!CPU.empty()) {
6059	CmdArgs.push_back(Elt: "-target-cpu");
6060	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPU));
6061	}
6062
6063	RenderTargetOptions(EffectiveTriple: Triple, Args, KernelOrKext, CmdArgs);
6064
6065	// Add clang-cl arguments.
6066	types::ID InputType = Input.getType();
6067	if (D.IsCLMode())
6068	AddClangCLArgs(Args, InputType, CmdArgs);
6069
6070	llvm::codegenoptions::DebugInfoKind DebugInfoKind =
6071	llvm::codegenoptions::NoDebugInfo;
6072	DwarfFissionKind DwarfFission = DwarfFissionKind::None;
6073	renderDebugOptions(TC, D, T: RawTriple, Args, IRInput: types::isLLVMIR(Id: InputType),
6074	CmdArgs, Output, DebugInfoKind, DwarfFission);
6075
6076	// Add the split debug info name to the command lines here so we
6077	// can propagate it to the backend.
6078	bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&
6079	(TC.getTriple().isOSBinFormatELF() ||
6080	TC.getTriple().isOSBinFormatWasm() ||
6081	TC.getTriple().isOSBinFormatCOFF()) &&
6082	(isa<AssembleJobAction>(Val: JA) || isa<CompileJobAction>(Val: JA) ||
6083	isa<BackendJobAction>(Val: JA));
6084	if (SplitDWARF) {
6085	const char *SplitDWARFOut = SplitDebugName(JA, Args, Input, Output);
6086	CmdArgs.push_back(Elt: "-split-dwarf-file");
6087	CmdArgs.push_back(Elt: SplitDWARFOut);
6088	if (DwarfFission == DwarfFissionKind::Split) {
6089	CmdArgs.push_back(Elt: "-split-dwarf-output");
6090	CmdArgs.push_back(Elt: SplitDWARFOut);
6091	}
6092	}
6093
6094	// Pass the linker version in use.
6095	if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
6096	CmdArgs.push_back(Elt: "-target-linker-version");
6097	CmdArgs.push_back(Elt: A->getValue());
6098	}
6099
6100	// Explicitly error on some things we know we don't support and can't just
6101	// ignore.
6102	if (!Args.hasArg(options::OPT_fallow_unsupported)) {
6103	Arg *Unsupported;
6104	if (types::isCXX(Id: InputType) && RawTriple.isOSDarwin() &&
6105	TC.getArch() == llvm::Triple::x86) {
6106	if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
6107	(Unsupported = Args.getLastArg(options::OPT_mkernel)))
6108	D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
6109	<< Unsupported->getOption().getName();
6110	}
6111	// The faltivec option has been superseded by the maltivec option.
6112	if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))
6113	D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
6114	<< Unsupported->getOption().getName()
6115	<< "please use -maltivec and include altivec.h explicitly";
6116	if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))
6117	D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)
6118	<< Unsupported->getOption().getName() << "please use -mno-altivec";
6119	}
6120
6121	Args.AddAllArgs(CmdArgs, options::OPT_v);
6122
6123	if (Args.getLastArg(options::OPT_H)) {
6124	CmdArgs.push_back(Elt: "-H");
6125	CmdArgs.push_back(Elt: "-sys-header-deps");
6126	}
6127	Args.AddAllArgs(CmdArgs, options::OPT_fshow_skipped_includes);
6128
6129	if (D.CCPrintHeadersFormat && !D.CCGenDiagnostics) {
6130	CmdArgs.push_back(Elt: "-header-include-file");
6131	CmdArgs.push_back(Elt: !D.CCPrintHeadersFilename.empty()
6132	? D.CCPrintHeadersFilename.c_str()
6133	: "-");
6134	CmdArgs.push_back(Elt: "-sys-header-deps");
6135	CmdArgs.push_back(Elt: Args.MakeArgString(
6136	Str: "-header-include-format=" +
6137	std::string(headerIncludeFormatKindToString(K: D.CCPrintHeadersFormat))));
6138	CmdArgs.push_back(
6139	Elt: Args.MakeArgString(Str: "-header-include-filtering=" +
6140	std::string(headerIncludeFilteringKindToString(
6141	K: D.CCPrintHeadersFiltering))));
6142	}
6143	Args.AddLastArg(CmdArgs, options::OPT_P);
6144	Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
6145
6146	if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
6147	CmdArgs.push_back(Elt: "-diagnostic-log-file");
6148	CmdArgs.push_back(Elt: !D.CCLogDiagnosticsFilename.empty()
6149	? D.CCLogDiagnosticsFilename.c_str()
6150	: "-");
6151	}
6152
6153	// Give the gen diagnostics more chances to succeed, by avoiding intentional
6154	// crashes.
6155	if (D.CCGenDiagnostics)
6156	CmdArgs.push_back(Elt: "-disable-pragma-debug-crash");
6157
6158	// Allow backend to put its diagnostic files in the same place as frontend
6159	// crash diagnostics files.
6160	if (Args.hasArg(options::OPT_fcrash_diagnostics_dir)) {
6161	StringRef Dir = Args.getLastArgValue(options::OPT_fcrash_diagnostics_dir);
6162	CmdArgs.push_back(Elt: "-mllvm");
6163	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-crash-diagnostics-dir=" + Dir));
6164	}
6165
6166	bool UseSeparateSections = isUseSeparateSections(Triple);
6167
6168	if (Args.hasFlag(options::OPT_ffunction_sections,
6169	options::OPT_fno_function_sections, UseSeparateSections)) {
6170	CmdArgs.push_back(Elt: "-ffunction-sections");
6171	}
6172
6173	if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_address_map,
6174	options::OPT_fno_basic_block_address_map)) {
6175	if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF()) {
6176	if (A->getOption().matches(options::OPT_fbasic_block_address_map))
6177	A->render(Args, Output&: CmdArgs);
6178	} else {
6179	D.Diag(diag::err_drv_unsupported_opt_for_target)
6180	<< A->getAsString(Args) << TripleStr;
6181	}
6182	}
6183
6184	if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_sections_EQ)) {
6185	StringRef Val = A->getValue();
6186	if (Val == "labels") {
6187	D.Diag(diag::warn_drv_deprecated_arg)
6188	<< A->getAsString(Args) << /*hasReplacement=*/true
6189	<< "-fbasic-block-address-map";
6190	CmdArgs.push_back(Elt: "-fbasic-block-address-map");
6191	} else if (Triple.isX86() && Triple.isOSBinFormatELF()) {
6192	if (Val != "all" && Val != "none" && !Val.starts_with(Prefix: "list="))
6193	D.Diag(diag::err_drv_invalid_value)
6194	<< A->getAsString(Args) << A->getValue();
6195	else
6196	A->render(Args, Output&: CmdArgs);
6197	} else if (Triple.isAArch64() && Triple.isOSBinFormatELF()) {
6198	// "all" is not supported on AArch64 since branch relaxation creates new
6199	// basic blocks for some cross-section branches.
6200	if (Val != "labels" && Val != "none" && !Val.starts_with(Prefix: "list="))
6201	D.Diag(diag::err_drv_invalid_value)
6202	<< A->getAsString(Args) << A->getValue();
6203	else
6204	A->render(Args, Output&: CmdArgs);
6205	} else if (Triple.isNVPTX()) {
6206	// Do not pass the option to the GPU compilation. We still want it enabled
6207	// for the host-side compilation, so seeing it here is not an error.
6208	} else if (Val != "none") {
6209	// =none is allowed everywhere. It's useful for overriding the option
6210	// and is the same as not specifying the option.
6211	D.Diag(diag::err_drv_unsupported_opt_for_target)
6212	<< A->getAsString(Args) << TripleStr;
6213	}
6214	}
6215
6216	bool HasDefaultDataSections = Triple.isOSBinFormatXCOFF();
6217	if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
6218	UseSeparateSections || HasDefaultDataSections)) {
6219	CmdArgs.push_back(Elt: "-fdata-sections");
6220	}
6221
6222	Args.addOptOutFlag(CmdArgs, options::OPT_funique_section_names,
6223	options::OPT_fno_unique_section_names);
6224	Args.addOptInFlag(CmdArgs, options::OPT_fseparate_named_sections,
6225	options::OPT_fno_separate_named_sections);
6226	Args.addOptInFlag(CmdArgs, options::OPT_funique_internal_linkage_names,
6227	options::OPT_fno_unique_internal_linkage_names);
6228	Args.addOptInFlag(CmdArgs, options::OPT_funique_basic_block_section_names,
6229	options::OPT_fno_unique_basic_block_section_names);
6230
6231	if (Arg *A = Args.getLastArg(options::OPT_fsplit_machine_functions,
6232	options::OPT_fno_split_machine_functions)) {
6233	if (!A->getOption().matches(options::OPT_fno_split_machine_functions)) {
6234	// This codegen pass is only available on x86 and AArch64 ELF targets.
6235	if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF())
6236	A->render(Args, Output&: CmdArgs);
6237	else
6238	D.Diag(diag::err_drv_unsupported_opt_for_target)
6239	<< A->getAsString(Args) << TripleStr;
6240	}
6241	}
6242
6243	Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,
6244	options::OPT_finstrument_functions_after_inlining,
6245	options::OPT_finstrument_function_entry_bare);
6246	Args.AddLastArg(CmdArgs, options::OPT_fconvergent_functions,
6247	options::OPT_fno_convergent_functions);
6248
6249	// NVPTX doesn't support PGO or coverage
6250	if (!Triple.isNVPTX())
6251	addPGOAndCoverageFlags(TC, C, JA, Output, Args, SanArgs&: SanitizeArgs, CmdArgs);
6252
6253	Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);
6254
6255	if (getLastProfileSampleUseArg(Args) &&
6256	Args.hasArg(options::OPT_fsample_profile_use_profi)) {
6257	CmdArgs.push_back(Elt: "-mllvm");
6258	CmdArgs.push_back(Elt: "-sample-profile-use-profi");
6259	}
6260
6261	// Add runtime flag for PS4/PS5 when PGO, coverage, or sanitizers are enabled.
6262	if (RawTriple.isPS() &&
6263	!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
6264	PScpu::addProfileRTArgs(TC, Args, CmdArgs);
6265	PScpu::addSanitizerArgs(TC, Args, CmdArgs);
6266	}
6267
6268	// Pass options for controlling the default header search paths.
6269	if (Args.hasArg(options::OPT_nostdinc)) {
6270	CmdArgs.push_back(Elt: "-nostdsysteminc");
6271	CmdArgs.push_back(Elt: "-nobuiltininc");
6272	} else {
6273	if (Args.hasArg(options::OPT_nostdlibinc))
6274	CmdArgs.push_back(Elt: "-nostdsysteminc");
6275	Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
6276	Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
6277	}
6278
6279	// Pass the path to compiler resource files.
6280	CmdArgs.push_back(Elt: "-resource-dir");
6281	CmdArgs.push_back(Elt: D.ResourceDir.c_str());
6282
6283	Args.AddLastArg(CmdArgs, options::OPT_working_directory);
6284
6285	// Add preprocessing options like -I, -D, etc. if we are using the
6286	// preprocessor.
6287	//
6288	// FIXME: Support -fpreprocessed
6289	if (types::getPreprocessedType(Id: InputType) != types::TY_INVALID)
6290	AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
6291
6292	// Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
6293	// that "The compiler can only warn and ignore the option if not recognized".
6294	// When building with ccache, it will pass -D options to clang even on
6295	// preprocessed inputs and configure concludes that -fPIC is not supported.
6296	Args.ClaimAllArgs(options::OPT_D);
6297
6298	// Warn about ignored options to clang.
6299	for (const Arg *A :
6300	Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
6301	D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
6302	A->claim();
6303	}
6304
6305	for (const Arg *A :
6306	Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {
6307	D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);
6308	A->claim();
6309	}
6310
6311	claimNoWarnArgs(Args);
6312
6313	Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
6314
6315	for (const Arg *A :
6316	Args.filtered(options::OPT_W_Group, options::OPT__SLASH_wd)) {
6317	A->claim();
6318	if (A->getOption().getID() == options::OPT__SLASH_wd) {
6319	unsigned WarningNumber;
6320	if (StringRef(A->getValue()).getAsInteger(10, WarningNumber)) {
6321	D.Diag(diag::err_drv_invalid_int_value)
6322	<< A->getAsString(Args) << A->getValue();
6323	continue;
6324	}
6325
6326	if (auto Group = diagGroupFromCLWarningID(WarningNumber)) {
6327	CmdArgs.push_back(Args.MakeArgString(
6328	"-Wno-" + DiagnosticIDs::getWarningOptionForGroup(*Group)));
6329	}
6330	continue;
6331	}
6332	A->render(Args, CmdArgs);
6333	}
6334
6335	Args.AddAllArgs(CmdArgs, options::OPT_Wsystem_headers_in_module_EQ);
6336
6337	if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
6338	CmdArgs.push_back(Elt: "-pedantic");
6339	Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
6340	Args.AddLastArg(CmdArgs, options::OPT_w);
6341
6342	Args.addOptInFlag(CmdArgs, options::OPT_ffixed_point,
6343	options::OPT_fno_fixed_point);
6344
6345	if (Arg *A = Args.getLastArg(options::OPT_fcxx_abi_EQ))
6346	A->render(Args, Output&: CmdArgs);
6347
6348	Args.AddLastArg(CmdArgs, options::OPT_fexperimental_relative_cxx_abi_vtables,
6349	options::OPT_fno_experimental_relative_cxx_abi_vtables);
6350
6351	Args.AddLastArg(CmdArgs, options::OPT_fexperimental_omit_vtable_rtti,
6352	options::OPT_fno_experimental_omit_vtable_rtti);
6353
6354	if (Arg *A = Args.getLastArg(options::OPT_ffuchsia_api_level_EQ))
6355	A->render(Args, Output&: CmdArgs);
6356
6357	// Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
6358	// (-ansi is equivalent to -std=c89 or -std=c++98).
6359	//
6360	// If a std is supplied, only add -trigraphs if it follows the
6361	// option.
6362	bool ImplyVCPPCVer = false;
6363	bool ImplyVCPPCXXVer = false;
6364	const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
6365	if (Std) {
6366	if (Std->getOption().matches(options::OPT_ansi))
6367	if (types::isCXX(Id: InputType))
6368	CmdArgs.push_back(Elt: "-std=c++98");
6369	else
6370	CmdArgs.push_back(Elt: "-std=c89");
6371	else
6372	Std->render(Args, Output&: CmdArgs);
6373
6374	// If -f(no-)trigraphs appears after the language standard flag, honor it.
6375	if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
6376	options::OPT_ftrigraphs,
6377	options::OPT_fno_trigraphs))
6378	if (A != Std)
6379	A->render(Args, Output&: CmdArgs);
6380	} else {
6381	// Honor -std-default.
6382	//
6383	// FIXME: Clang doesn't correctly handle -std= when the input language
6384	// doesn't match. For the time being just ignore this for C++ inputs;
6385	// eventually we want to do all the standard defaulting here instead of
6386	// splitting it between the driver and clang -cc1.
6387	if (!types::isCXX(Id: InputType)) {
6388	if (!Args.hasArg(options::OPT__SLASH_std)) {
6389	Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
6390	/*Joined=*/true);
6391	} else
6392	ImplyVCPPCVer = true;
6393	}
6394	else if (IsWindowsMSVC)
6395	ImplyVCPPCXXVer = true;
6396
6397	Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
6398	options::OPT_fno_trigraphs);
6399	}
6400
6401	// GCC's behavior for -Wwrite-strings is a bit strange:
6402	// * In C, this "warning flag" changes the types of string literals from
6403	// 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
6404	// for the discarded qualifier.
6405	// * In C++, this is just a normal warning flag.
6406	//
6407	// Implementing this warning correctly in C is hard, so we follow GCC's
6408	// behavior for now. FIXME: Directly diagnose uses of a string literal as
6409	// a non-const char* in C, rather than using this crude hack.
6410	if (!types::isCXX(Id: InputType)) {
6411	// FIXME: This should behave just like a warning flag, and thus should also
6412	// respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
6413	Arg *WriteStrings =
6414	Args.getLastArg(options::OPT_Wwrite_strings,
6415	options::OPT_Wno_write_strings, options::OPT_w);
6416	if (WriteStrings &&
6417	WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
6418	CmdArgs.push_back(Elt: "-fconst-strings");
6419	}
6420
6421	// GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
6422	// during C++ compilation, which it is by default. GCC keeps this define even
6423	// in the presence of '-w', match this behavior bug-for-bug.
6424	if (types::isCXX(InputType) &&
6425	Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
6426	true)) {
6427	CmdArgs.push_back(Elt: "-fdeprecated-macro");
6428	}
6429
6430	// Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
6431	if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
6432	if (Asm->getOption().matches(options::OPT_fasm))
6433	CmdArgs.push_back(Elt: "-fgnu-keywords");
6434	else
6435	CmdArgs.push_back(Elt: "-fno-gnu-keywords");
6436	}
6437
6438	if (!ShouldEnableAutolink(Args, TC, JA))
6439	CmdArgs.push_back(Elt: "-fno-autolink");
6440
6441	Args.AddLastArg(CmdArgs, options::OPT_ftemplate_depth_EQ);
6442	Args.AddLastArg(CmdArgs, options::OPT_foperator_arrow_depth_EQ);
6443	Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_depth_EQ);
6444	Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_steps_EQ);
6445
6446	Args.AddLastArg(CmdArgs, options::OPT_fexperimental_library);
6447
6448	if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))
6449	CmdArgs.push_back(Elt: "-fexperimental-new-constant-interpreter");
6450
6451	if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
6452	CmdArgs.push_back(Elt: "-fbracket-depth");
6453	CmdArgs.push_back(Elt: A->getValue());
6454	}
6455
6456	if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
6457	options::OPT_Wlarge_by_value_copy_def)) {
6458	if (A->getNumValues()) {
6459	StringRef bytes = A->getValue();
6460	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-Wlarge-by-value-copy=" + bytes));
6461	} else
6462	CmdArgs.push_back(Elt: "-Wlarge-by-value-copy=64"); // default value
6463	}
6464
6465	if (Args.hasArg(options::OPT_relocatable_pch))
6466	CmdArgs.push_back(Elt: "-relocatable-pch");
6467
6468	if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {
6469	static const char *kCFABIs[] = {
6470	"standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",
6471	};
6472
6473	if (!llvm::is_contained(Range&: kCFABIs, Element: StringRef(A->getValue())))
6474	D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();
6475	else
6476	A->render(Args, Output&: CmdArgs);
6477	}
6478
6479	if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
6480	CmdArgs.push_back(Elt: "-fconstant-string-class");
6481	CmdArgs.push_back(Elt: A->getValue());
6482	}
6483
6484	if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
6485	CmdArgs.push_back(Elt: "-ftabstop");
6486	CmdArgs.push_back(Elt: A->getValue());
6487	}
6488
6489	Args.addOptInFlag(CmdArgs, options::OPT_fstack_size_section,
6490	options::OPT_fno_stack_size_section);
6491
6492	if (Args.hasArg(options::OPT_fstack_usage)) {
6493	CmdArgs.push_back(Elt: "-stack-usage-file");
6494
6495	if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
6496	SmallString<128> OutputFilename(OutputOpt->getValue());
6497	llvm::sys::path::replace_extension(path&: OutputFilename, extension: "su");
6498	CmdArgs.push_back(Elt: Args.MakeArgString(Str: OutputFilename));
6499	} else
6500	CmdArgs.push_back(
6501	Elt: Args.MakeArgString(Str: Twine(getBaseInputStem(Args, Inputs)) + ".su"));
6502	}
6503
6504	CmdArgs.push_back(Elt: "-ferror-limit");
6505	if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
6506	CmdArgs.push_back(Elt: A->getValue());
6507	else
6508	CmdArgs.push_back(Elt: "19");
6509
6510	Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_backtrace_limit_EQ);
6511	Args.AddLastArg(CmdArgs, options::OPT_fmacro_backtrace_limit_EQ);
6512	Args.AddLastArg(CmdArgs, options::OPT_ftemplate_backtrace_limit_EQ);
6513	Args.AddLastArg(CmdArgs, options::OPT_fspell_checking_limit_EQ);
6514	Args.AddLastArg(CmdArgs, options::OPT_fcaret_diagnostics_max_lines_EQ);
6515
6516	// Pass -fmessage-length=.
6517	unsigned MessageLength = 0;
6518	if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
6519	StringRef V(A->getValue());
6520	if (V.getAsInteger(0, MessageLength))
6521	D.Diag(diag::err_drv_invalid_argument_to_option)
6522	<< V << A->getOption().getName();
6523	} else {
6524	// If -fmessage-length=N was not specified, determine whether this is a
6525	// terminal and, if so, implicitly define -fmessage-length appropriately.
6526	MessageLength = llvm::sys::Process::StandardErrColumns();
6527	}
6528	if (MessageLength != 0)
6529	CmdArgs.push_back(
6530	Elt: Args.MakeArgString(Str: "-fmessage-length=" + Twine(MessageLength)));
6531
6532	if (Arg *A = Args.getLastArg(options::OPT_frandomize_layout_seed_EQ))
6533	CmdArgs.push_back(
6534	Elt: Args.MakeArgString(Str: "-frandomize-layout-seed=" + Twine(A->getValue(N: 0))));
6535
6536	if (Arg *A = Args.getLastArg(options::OPT_frandomize_layout_seed_file_EQ))
6537	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-frandomize-layout-seed-file=" +
6538	Twine(A->getValue(N: 0))));
6539
6540	// -fvisibility= and -fvisibility-ms-compat are of a piece.
6541	if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
6542	options::OPT_fvisibility_ms_compat)) {
6543	if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
6544	A->render(Args, Output&: CmdArgs);
6545	} else {
6546	assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
6547	CmdArgs.push_back(Elt: "-fvisibility=hidden");
6548	CmdArgs.push_back(Elt: "-ftype-visibility=default");
6549	}
6550	} else if (IsOpenMPDevice) {
6551	// When compiling for the OpenMP device we want protected visibility by
6552	// default. This prevents the device from accidentally preempting code on
6553	// the host, makes the system more robust, and improves performance.
6554	CmdArgs.push_back(Elt: "-fvisibility=protected");
6555	}
6556
6557	// PS4/PS5 process these options in addClangTargetOptions.
6558	if (!RawTriple.isPS()) {
6559	if (const Arg *A =
6560	Args.getLastArg(options::OPT_fvisibility_from_dllstorageclass,
6561	options::OPT_fno_visibility_from_dllstorageclass)) {
6562	if (A->getOption().matches(
6563	options::OPT_fvisibility_from_dllstorageclass)) {
6564	CmdArgs.push_back(Elt: "-fvisibility-from-dllstorageclass");
6565	Args.AddLastArg(CmdArgs, options::OPT_fvisibility_dllexport_EQ);
6566	Args.AddLastArg(CmdArgs, options::OPT_fvisibility_nodllstorageclass_EQ);
6567	Args.AddLastArg(CmdArgs, options::OPT_fvisibility_externs_dllimport_EQ);
6568	Args.AddLastArg(CmdArgs,
6569	options::OPT_fvisibility_externs_nodllstorageclass_EQ);
6570	}
6571	}
6572	}
6573
6574	if (Args.hasFlag(options::OPT_fvisibility_inlines_hidden,
6575	options::OPT_fno_visibility_inlines_hidden, false))
6576	CmdArgs.push_back(Elt: "-fvisibility-inlines-hidden");
6577
6578	Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden_static_local_var,
6579	options::OPT_fno_visibility_inlines_hidden_static_local_var);
6580
6581	// -fvisibility-global-new-delete-hidden is a deprecated spelling of
6582	// -fvisibility-global-new-delete=force-hidden.
6583	if (const Arg *A =
6584	Args.getLastArg(options::OPT_fvisibility_global_new_delete_hidden)) {
6585	D.Diag(diag::warn_drv_deprecated_arg)
6586	<< A->getAsString(Args) << /*hasReplacement=*/true
6587	<< "-fvisibility-global-new-delete=force-hidden";
6588	}
6589
6590	if (const Arg *A =
6591	Args.getLastArg(options::OPT_fvisibility_global_new_delete_EQ,
6592	options::OPT_fvisibility_global_new_delete_hidden)) {
6593	if (A->getOption().matches(options::OPT_fvisibility_global_new_delete_EQ)) {
6594	A->render(Args, Output&: CmdArgs);
6595	} else {
6596	assert(A->getOption().matches(
6597	options::OPT_fvisibility_global_new_delete_hidden));
6598	CmdArgs.push_back(Elt: "-fvisibility-global-new-delete=force-hidden");
6599	}
6600	}
6601
6602	Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
6603
6604	if (Args.hasFlag(options::OPT_fnew_infallible,
6605	options::OPT_fno_new_infallible, false))
6606	CmdArgs.push_back(Elt: "-fnew-infallible");
6607
6608	if (Args.hasFlag(options::OPT_fno_operator_names,
6609	options::OPT_foperator_names, false))
6610	CmdArgs.push_back(Elt: "-fno-operator-names");
6611
6612	// Forward -f (flag) options which we can pass directly.
6613	Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
6614	Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
6615	Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
6616	Args.AddLastArg(CmdArgs, options::OPT_fzero_call_used_regs_EQ);
6617	Args.AddLastArg(CmdArgs, options::OPT_fraw_string_literals,
6618	options::OPT_fno_raw_string_literals);
6619
6620	if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
6621	Triple.hasDefaultEmulatedTLS()))
6622	CmdArgs.push_back(Elt: "-femulated-tls");
6623
6624	Args.addOptInFlag(CmdArgs, options::OPT_fcheck_new,
6625	options::OPT_fno_check_new);
6626
6627	if (Arg *A = Args.getLastArg(options::OPT_fzero_call_used_regs_EQ)) {
6628	// FIXME: There's no reason for this to be restricted to X86. The backend
6629	// code needs to be changed to include the appropriate function calls
6630	// automatically.
6631	if (!Triple.isX86() && !Triple.isAArch64())
6632	D.Diag(diag::err_drv_unsupported_opt_for_target)
6633	<< A->getAsString(Args) << TripleStr;
6634	}
6635
6636	// AltiVec-like language extensions aren't relevant for assembling.
6637	if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
6638	Args.AddLastArg(CmdArgs, options::OPT_fzvector);
6639
6640	Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
6641	Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
6642
6643	// Forward flags for OpenMP. We don't do this if the current action is an
6644	// device offloading action other than OpenMP.
6645	if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
6646	options::OPT_fno_openmp, false) &&
6647	!Args.hasFlag(options::OPT_foffload_via_llvm,
6648	options::OPT_fno_offload_via_llvm, false) &&
6649	(JA.isDeviceOffloading(Action::OFK_None) ||
6650	JA.isDeviceOffloading(Action::OFK_OpenMP))) {
6651	switch (D.getOpenMPRuntime(Args)) {
6652	case Driver::OMPRT_OMP:
6653	case Driver::OMPRT_IOMP5:
6654	// Clang can generate useful OpenMP code for these two runtime libraries.
6655	CmdArgs.push_back(Elt: "-fopenmp");
6656
6657	// If no option regarding the use of TLS in OpenMP codegeneration is
6658	// given, decide a default based on the target. Otherwise rely on the
6659	// options and pass the right information to the frontend.
6660	if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
6661	options::OPT_fnoopenmp_use_tls, /*Default=*/true))
6662	CmdArgs.push_back(Elt: "-fnoopenmp-use-tls");
6663	Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
6664	options::OPT_fno_openmp_simd);
6665	Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_enable_irbuilder);
6666	Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
6667	if (!Args.hasFlag(options::OPT_fopenmp_extensions,
6668	options::OPT_fno_openmp_extensions, /*Default=*/true))
6669	CmdArgs.push_back(Elt: "-fno-openmp-extensions");
6670	Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);
6671	Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);
6672	Args.AddAllArgs(CmdArgs,
6673	options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);
6674	if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,
6675	options::OPT_fno_openmp_optimistic_collapse,
6676	/*Default=*/false))
6677	CmdArgs.push_back(Elt: "-fopenmp-optimistic-collapse");
6678
6679	// When in OpenMP offloading mode with NVPTX target, forward
6680	// cuda-mode flag
6681	if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,
6682	options::OPT_fno_openmp_cuda_mode, /*Default=*/false))
6683	CmdArgs.push_back(Elt: "-fopenmp-cuda-mode");
6684
6685	// When in OpenMP offloading mode, enable debugging on the device.
6686	Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_target_debug_EQ);
6687	if (Args.hasFlag(options::OPT_fopenmp_target_debug,
6688	options::OPT_fno_openmp_target_debug, /*Default=*/false))
6689	CmdArgs.push_back(Elt: "-fopenmp-target-debug");
6690
6691	// When in OpenMP offloading mode, forward assumptions information about
6692	// thread and team counts in the device.
6693	if (Args.hasFlag(options::OPT_fopenmp_assume_teams_oversubscription,
6694	options::OPT_fno_openmp_assume_teams_oversubscription,
6695	/*Default=*/false))
6696	CmdArgs.push_back(Elt: "-fopenmp-assume-teams-oversubscription");
6697	if (Args.hasFlag(options::OPT_fopenmp_assume_threads_oversubscription,
6698	options::OPT_fno_openmp_assume_threads_oversubscription,
6699	/*Default=*/false))
6700	CmdArgs.push_back(Elt: "-fopenmp-assume-threads-oversubscription");
6701	if (Args.hasArg(options::OPT_fopenmp_assume_no_thread_state))
6702	CmdArgs.push_back(Elt: "-fopenmp-assume-no-thread-state");
6703	if (Args.hasArg(options::OPT_fopenmp_assume_no_nested_parallelism))
6704	CmdArgs.push_back(Elt: "-fopenmp-assume-no-nested-parallelism");
6705	if (Args.hasArg(options::OPT_fopenmp_offload_mandatory))
6706	CmdArgs.push_back(Elt: "-fopenmp-offload-mandatory");
6707	if (Args.hasArg(options::OPT_fopenmp_force_usm))
6708	CmdArgs.push_back(Elt: "-fopenmp-force-usm");
6709	break;
6710	default:
6711	// By default, if Clang doesn't know how to generate useful OpenMP code
6712	// for a specific runtime library, we just don't pass the '-fopenmp' flag
6713	// down to the actual compilation.
6714	// FIXME: It would be better to have a mode which *only* omits IR
6715	// generation based on the OpenMP support so that we get consistent
6716	// semantic analysis, etc.
6717	break;
6718	}
6719	} else {
6720	Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,
6721	options::OPT_fno_openmp_simd);
6722	Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
6723	Args.addOptOutFlag(CmdArgs, options::OPT_fopenmp_extensions,
6724	options::OPT_fno_openmp_extensions);
6725	}
6726	// Forward the offload runtime change to code generation, liboffload implies
6727	// new driver. Otherwise, check if we should forward the new driver to change
6728	// offloading code generation.
6729	if (Args.hasFlag(options::OPT_foffload_via_llvm,
6730	options::OPT_fno_offload_via_llvm, false)) {
6731	CmdArgs.append(IL: {"--offload-new-driver", "-foffload-via-llvm"});
6732	} else if (Args.hasFlag(options::OPT_offload_new_driver,
6733	options::OPT_no_offload_new_driver,
6734	C.isOffloadingHostKind(Action::OFK_Cuda))) {
6735	CmdArgs.push_back(Elt: "--offload-new-driver");
6736	}
6737
6738	const XRayArgs &XRay = TC.getXRayArgs(Args);
6739	XRay.addArgs(TC, Args, CmdArgs, InputType);
6740
6741	for (const auto &Filename :
6742	Args.getAllArgValues(options::OPT_fprofile_list_EQ)) {
6743	if (D.getVFS().exists(Filename))
6744	CmdArgs.push_back(Args.MakeArgString("-fprofile-list=" + Filename));
6745	else
6746	D.Diag(clang::diag::err_drv_no_such_file) << Filename;
6747	}
6748
6749	if (Arg *A = Args.getLastArg(options::OPT_fpatchable_function_entry_EQ)) {
6750	StringRef S0 = A->getValue(), S = S0;
6751	unsigned Size, Offset = 0;
6752	if (!Triple.isAArch64() && !Triple.isLoongArch() && !Triple.isRISCV() &&
6753	!Triple.isX86() &&
6754	!(!Triple.isOSAIX() && (Triple.getArch() == llvm::Triple::ppc ||
6755	Triple.getArch() == llvm::Triple::ppc64)))
6756	D.Diag(diag::err_drv_unsupported_opt_for_target)
6757	<< A->getAsString(Args) << TripleStr;
6758	else if (S.consumeInteger(Radix: 10, Result&: Size) ||
6759	(!S.empty() &&
6760	(!S.consume_front(Prefix: ",") || S.consumeInteger(Radix: 10, Result&: Offset))) ||
6761	(!S.empty() && (!S.consume_front(Prefix: ",") || S.empty())))
6762	D.Diag(diag::err_drv_invalid_argument_to_option)
6763	<< S0 << A->getOption().getName();
6764	else if (Size < Offset)
6765	D.Diag(diag::err_drv_unsupported_fpatchable_function_entry_argument);
6766	else {
6767	CmdArgs.push_back(Elt: Args.MakeArgString(Str: A->getSpelling() + Twine(Size)));
6768	CmdArgs.push_back(Elt: Args.MakeArgString(
6769	Str: "-fpatchable-function-entry-offset=" + Twine(Offset)));
6770	if (!S.empty())
6771	CmdArgs.push_back(
6772	Elt: Args.MakeArgString(Str: "-fpatchable-function-entry-section=" + S));
6773	}
6774	}
6775
6776	Args.AddLastArg(CmdArgs, options::OPT_fms_hotpatch);
6777
6778	if (TC.SupportsProfiling()) {
6779	Args.AddLastArg(CmdArgs, options::OPT_pg);
6780
6781	llvm::Triple::ArchType Arch = TC.getArch();
6782	if (Arg *A = Args.getLastArg(options::OPT_mfentry)) {
6783	if (Arch == llvm::Triple::systemz || TC.getTriple().isX86())
6784	A->render(Args, Output&: CmdArgs);
6785	else
6786	D.Diag(diag::err_drv_unsupported_opt_for_target)
6787	<< A->getAsString(Args) << TripleStr;
6788	}
6789	if (Arg *A = Args.getLastArg(options::OPT_mnop_mcount)) {
6790	if (Arch == llvm::Triple::systemz)
6791	A->render(Args, Output&: CmdArgs);
6792	else
6793	D.Diag(diag::err_drv_unsupported_opt_for_target)
6794	<< A->getAsString(Args) << TripleStr;
6795	}
6796	if (Arg *A = Args.getLastArg(options::OPT_mrecord_mcount)) {
6797	if (Arch == llvm::Triple::systemz)
6798	A->render(Args, Output&: CmdArgs);
6799	else
6800	D.Diag(diag::err_drv_unsupported_opt_for_target)
6801	<< A->getAsString(Args) << TripleStr;
6802	}
6803	}
6804
6805	if (Arg *A = Args.getLastArgNoClaim(options::OPT_pg)) {
6806	if (TC.getTriple().isOSzOS()) {
6807	D.Diag(diag::err_drv_unsupported_opt_for_target)
6808	<< A->getAsString(Args) << TripleStr;
6809	}
6810	}
6811	if (Arg *A = Args.getLastArgNoClaim(options::OPT_p)) {
6812	if (!(TC.getTriple().isOSAIX() || TC.getTriple().isOSOpenBSD())) {
6813	D.Diag(diag::err_drv_unsupported_opt_for_target)
6814	<< A->getAsString(Args) << TripleStr;
6815	}
6816	}
6817	if (Arg *A = Args.getLastArgNoClaim(options::OPT_p, options::OPT_pg)) {
6818	if (A->getOption().matches(options::OPT_p)) {
6819	A->claim();
6820	if (TC.getTriple().isOSAIX() && !Args.hasArgNoClaim(options::OPT_pg))
6821	CmdArgs.push_back(Elt: "-pg");
6822	}
6823	}
6824
6825	// Reject AIX-specific link options on other targets.
6826	if (!TC.getTriple().isOSAIX()) {
6827	for (const Arg *A : Args.filtered(options::OPT_b, options::OPT_K,
6828	options::OPT_mxcoff_build_id_EQ)) {
6829	D.Diag(diag::err_drv_unsupported_opt_for_target)
6830	<< A->getSpelling() << TripleStr;
6831	}
6832	}
6833
6834	if (Args.getLastArg(options::OPT_fapple_kext) ||
6835	(Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
6836	CmdArgs.push_back(Elt: "-fapple-kext");
6837
6838	Args.AddLastArg(CmdArgs, options::OPT_altivec_src_compat);
6839	Args.AddLastArg(CmdArgs, options::OPT_flax_vector_conversions_EQ);
6840	Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
6841	Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
6842	Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
6843	Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
6844	Args.AddLastArg(CmdArgs, options::OPT_ftime_report_EQ);
6845	Args.AddLastArg(CmdArgs, options::OPT_ftime_report_json);
6846	Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
6847	Args.AddLastArg(CmdArgs, options::OPT_malign_double);
6848	Args.AddLastArg(CmdArgs, options::OPT_fno_temp_file);
6849
6850	if (const char *Name = C.getTimeTraceFile(JA: &JA)) {
6851	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-ftime-trace=" + Twine(Name)));
6852	Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
6853	Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_verbose);
6854	}
6855
6856	if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
6857	CmdArgs.push_back(Elt: "-ftrapv-handler");
6858	CmdArgs.push_back(Elt: A->getValue());
6859	}
6860
6861	Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
6862
6863	// Handle -f[no-]wrapv and -f[no-]strict-overflow, which are used by both
6864	// clang and flang.
6865	renderCommonIntegerOverflowOptions(Args, CmdArgs);
6866
6867	Args.AddLastArg(CmdArgs, options::OPT_ffinite_loops,
6868	options::OPT_fno_finite_loops);
6869
6870	Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
6871	Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
6872	options::OPT_fno_unroll_loops);
6873	Args.AddLastArg(CmdArgs, options::OPT_floop_interchange,
6874	options::OPT_fno_loop_interchange);
6875
6876	Args.AddLastArg(CmdArgs, options::OPT_fstrict_flex_arrays_EQ);
6877
6878	Args.AddLastArg(CmdArgs, options::OPT_pthread);
6879
6880	Args.addOptInFlag(CmdArgs, options::OPT_mspeculative_load_hardening,
6881	options::OPT_mno_speculative_load_hardening);
6882
6883	RenderSSPOptions(D, TC, Args, CmdArgs, KernelOrKext);
6884	RenderSCPOptions(TC, Args, CmdArgs);
6885	RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);
6886
6887	Args.AddLastArg(CmdArgs, options::OPT_fswift_async_fp_EQ);
6888
6889	Args.addOptInFlag(CmdArgs, options::OPT_mstackrealign,
6890	options::OPT_mno_stackrealign);
6891
6892	if (Args.hasArg(options::OPT_mstack_alignment)) {
6893	StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
6894	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mstack-alignment=" + alignment));
6895	}
6896
6897	if (Args.hasArg(options::OPT_mstack_probe_size)) {
6898	StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
6899
6900	if (!Size.empty())
6901	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mstack-probe-size=" + Size));
6902	else
6903	CmdArgs.push_back(Elt: "-mstack-probe-size=0");
6904	}
6905
6906	Args.addOptOutFlag(CmdArgs, options::OPT_mstack_arg_probe,
6907	options::OPT_mno_stack_arg_probe);
6908
6909	if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
6910	options::OPT_mno_restrict_it)) {
6911	if (A->getOption().matches(options::OPT_mrestrict_it)) {
6912	CmdArgs.push_back(Elt: "-mllvm");
6913	CmdArgs.push_back(Elt: "-arm-restrict-it");
6914	} else {
6915	CmdArgs.push_back(Elt: "-mllvm");
6916	CmdArgs.push_back(Elt: "-arm-default-it");
6917	}
6918	}
6919
6920	// Forward -cl options to -cc1
6921	RenderOpenCLOptions(Args, CmdArgs, InputType);
6922
6923	// Forward hlsl options to -cc1
6924	RenderHLSLOptions(Args, CmdArgs, InputType);
6925
6926	// Forward OpenACC options to -cc1
6927	RenderOpenACCOptions(D, Args, CmdArgs, InputType);
6928
6929	if (IsHIP) {
6930	if (Args.hasFlag(options::OPT_fhip_new_launch_api,
6931	options::OPT_fno_hip_new_launch_api, true))
6932	CmdArgs.push_back(Elt: "-fhip-new-launch-api");
6933	Args.addOptInFlag(CmdArgs, options::OPT_fgpu_allow_device_init,
6934	options::OPT_fno_gpu_allow_device_init);
6935	Args.AddLastArg(CmdArgs, options::OPT_hipstdpar);
6936	Args.AddLastArg(CmdArgs, options::OPT_hipstdpar_interpose_alloc);
6937	Args.addOptInFlag(CmdArgs, options::OPT_fhip_kernel_arg_name,
6938	options::OPT_fno_hip_kernel_arg_name);
6939	}
6940
6941	if (IsCuda || IsHIP) {
6942	if (IsRDCMode)
6943	CmdArgs.push_back(Elt: "-fgpu-rdc");
6944	Args.addOptInFlag(CmdArgs, options::OPT_fgpu_defer_diag,
6945	options::OPT_fno_gpu_defer_diag);
6946	if (Args.hasFlag(options::OPT_fgpu_exclude_wrong_side_overloads,
6947	options::OPT_fno_gpu_exclude_wrong_side_overloads,
6948	false)) {
6949	CmdArgs.push_back(Elt: "-fgpu-exclude-wrong-side-overloads");
6950	CmdArgs.push_back(Elt: "-fgpu-defer-diag");
6951	}
6952	}
6953
6954	// Forward --no-offloadlib to -cc1.
6955	if (!Args.hasFlag(options::OPT_offloadlib, options::OPT_no_offloadlib, true))
6956	CmdArgs.push_back(Elt: "--no-offloadlib");
6957
6958	if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
6959	CmdArgs.push_back(
6960	Elt: Args.MakeArgString(Str: Twine("-fcf-protection=") + A->getValue()));
6961
6962	if (Arg *SA = Args.getLastArg(options::OPT_mcf_branch_label_scheme_EQ))
6963	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-mcf-branch-label-scheme=") +
6964	SA->getValue()));
6965	} else if (Triple.isOSOpenBSD() && Triple.getArch() == llvm::Triple::x86_64) {
6966	// Emit IBT endbr64 instructions by default
6967	CmdArgs.push_back(Elt: "-fcf-protection=branch");
6968	// jump-table can generate indirect jumps, which are not permitted
6969	CmdArgs.push_back(Elt: "-fno-jump-tables");
6970	}
6971
6972	if (Arg *A = Args.getLastArg(options::OPT_mfunction_return_EQ))
6973	CmdArgs.push_back(
6974	Elt: Args.MakeArgString(Str: Twine("-mfunction-return=") + A->getValue()));
6975
6976	Args.AddLastArg(CmdArgs, options::OPT_mindirect_branch_cs_prefix);
6977
6978	// Forward -f options with positive and negative forms; we translate these by
6979	// hand. Do not propagate PGO options to the GPU-side compilations as the
6980	// profile info is for the host-side compilation only.
6981	if (!(IsCudaDevice || IsHIPDevice)) {
6982	if (Arg *A = getLastProfileSampleUseArg(Args)) {
6983	auto *PGOArg = Args.getLastArg(
6984	options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,
6985	options::OPT_fcs_profile_generate,
6986	options::OPT_fcs_profile_generate_EQ, options::OPT_fprofile_use,
6987	options::OPT_fprofile_use_EQ);
6988	if (PGOArg)
6989	D.Diag(diag::err_drv_argument_not_allowed_with)
6990	<< "SampleUse with PGO options";
6991
6992	StringRef fname = A->getValue();
6993	if (!llvm::sys::fs::exists(Path: fname))
6994	D.Diag(diag::err_drv_no_such_file) << fname;
6995	else
6996	A->render(Args, Output&: CmdArgs);
6997	}
6998	Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);
6999
7000	if (Args.hasFlag(options::OPT_fpseudo_probe_for_profiling,
7001	options::OPT_fno_pseudo_probe_for_profiling, false)) {
7002	CmdArgs.push_back(Elt: "-fpseudo-probe-for-profiling");
7003	// Enforce -funique-internal-linkage-names if it's not explicitly turned
7004	// off.
7005	if (Args.hasFlag(options::OPT_funique_internal_linkage_names,
7006	options::OPT_fno_unique_internal_linkage_names, true))
7007	CmdArgs.push_back(Elt: "-funique-internal-linkage-names");
7008	}
7009	}
7010	RenderBuiltinOptions(TC, T: RawTriple, Args, CmdArgs);
7011
7012	Args.addOptOutFlag(CmdArgs, options::OPT_fassume_sane_operator_new,
7013	options::OPT_fno_assume_sane_operator_new);
7014
7015	if (Args.hasFlag(options::OPT_fapinotes, options::OPT_fno_apinotes, false))
7016	CmdArgs.push_back(Elt: "-fapinotes");
7017	if (Args.hasFlag(options::OPT_fapinotes_modules,
7018	options::OPT_fno_apinotes_modules, false))
7019	CmdArgs.push_back(Elt: "-fapinotes-modules");
7020	Args.AddLastArg(CmdArgs, options::OPT_fapinotes_swift_version);
7021
7022	// -fblocks=0 is default.
7023	if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
7024	TC.IsBlocksDefault()) ||
7025	(Args.hasArg(options::OPT_fgnu_runtime) &&
7026	Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
7027	!Args.hasArg(options::OPT_fno_blocks))) {
7028	CmdArgs.push_back(Elt: "-fblocks");
7029
7030	if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())
7031	CmdArgs.push_back(Elt: "-fblocks-runtime-optional");
7032	}
7033
7034	// -fencode-extended-block-signature=1 is default.
7035	if (TC.IsEncodeExtendedBlockSignatureDefault())
7036	CmdArgs.push_back(Elt: "-fencode-extended-block-signature");
7037
7038	if (Args.hasFlag(options::OPT_fcoro_aligned_allocation,
7039	options::OPT_fno_coro_aligned_allocation, false) &&
7040	types::isCXX(InputType))
7041	CmdArgs.push_back(Elt: "-fcoro-aligned-allocation");
7042
7043	Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,
7044	options::OPT_fno_double_square_bracket_attributes);
7045
7046	Args.addOptOutFlag(CmdArgs, options::OPT_faccess_control,
7047	options::OPT_fno_access_control);
7048	Args.addOptOutFlag(CmdArgs, options::OPT_felide_constructors,
7049	options::OPT_fno_elide_constructors);
7050
7051	ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
7052
7053	if (KernelOrKext || (types::isCXX(Id: InputType) &&
7054	(RTTIMode == ToolChain::RM_Disabled)))
7055	CmdArgs.push_back(Elt: "-fno-rtti");
7056
7057	// -fshort-enums=0 is default for all architectures except Hexagon and z/OS.
7058	if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
7059	TC.getArch() == llvm::Triple::hexagon || Triple.isOSzOS()))
7060	CmdArgs.push_back(Elt: "-fshort-enums");
7061
7062	RenderCharacterOptions(Args, T: AuxTriple ? *AuxTriple : RawTriple, CmdArgs);
7063
7064	// -fuse-cxa-atexit is default.
7065	if (!Args.hasFlag(
7066	options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
7067	!RawTriple.isOSAIX() &&
7068	(!RawTriple.isOSWindows() ||
7069	RawTriple.isWindowsCygwinEnvironment()) &&
7070	((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
7071	RawTriple.hasEnvironment())) ||
7072	KernelOrKext)
7073	CmdArgs.push_back(Elt: "-fno-use-cxa-atexit");
7074
7075	if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,
7076	options::OPT_fno_register_global_dtors_with_atexit,
7077	RawTriple.isOSDarwin() && !KernelOrKext))
7078	CmdArgs.push_back(Elt: "-fregister-global-dtors-with-atexit");
7079
7080	Args.addOptInFlag(CmdArgs, options::OPT_fuse_line_directives,
7081	options::OPT_fno_use_line_directives);
7082
7083	// -fno-minimize-whitespace is default.
7084	if (Args.hasFlag(options::OPT_fminimize_whitespace,
7085	options::OPT_fno_minimize_whitespace, false)) {
7086	types::ID InputType = Inputs[0].getType();
7087	if (!isDerivedFromC(InputType))
7088	D.Diag(diag::err_drv_opt_unsupported_input_type)
7089	<< "-fminimize-whitespace" << types::getTypeName(InputType);
7090	CmdArgs.push_back(Elt: "-fminimize-whitespace");
7091	}
7092
7093	// -fno-keep-system-includes is default.
7094	if (Args.hasFlag(options::OPT_fkeep_system_includes,
7095	options::OPT_fno_keep_system_includes, false)) {
7096	types::ID InputType = Inputs[0].getType();
7097	if (!isDerivedFromC(InputType))
7098	D.Diag(diag::err_drv_opt_unsupported_input_type)
7099	<< "-fkeep-system-includes" << types::getTypeName(InputType);
7100	CmdArgs.push_back(Elt: "-fkeep-system-includes");
7101	}
7102
7103	// -fms-extensions=0 is default.
7104	if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
7105	IsWindowsMSVC || IsUEFI))
7106	CmdArgs.push_back(Elt: "-fms-extensions");
7107
7108	// -fms-compatibility=0 is default.
7109	bool IsMSVCCompat = Args.hasFlag(
7110	options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility,
7111	(IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions,
7112	options::OPT_fno_ms_extensions, true)));
7113	if (IsMSVCCompat) {
7114	CmdArgs.push_back(Elt: "-fms-compatibility");
7115	if (!types::isCXX(Input.getType()) &&
7116	Args.hasArg(options::OPT_fms_define_stdc))
7117	CmdArgs.push_back(Elt: "-fms-define-stdc");
7118	}
7119
7120	if (Triple.isWindowsMSVCEnvironment() && !D.IsCLMode() &&
7121	Args.hasArg(options::OPT_fms_runtime_lib_EQ))
7122	ProcessVSRuntimeLibrary(TC: getToolChain(), Args, CmdArgs);
7123
7124	// Handle -fgcc-version, if present.
7125	VersionTuple GNUCVer;
7126	if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {
7127	// Check that the version has 1 to 3 components and the minor and patch
7128	// versions fit in two decimal digits.
7129	StringRef Val = A->getValue();
7130	Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.
7131	bool Invalid = GNUCVer.tryParse(string: Val);
7132	unsigned Minor = GNUCVer.getMinor().value_or(u: 0);
7133	unsigned Patch = GNUCVer.getSubminor().value_or(u: 0);
7134	if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {
7135	D.Diag(diag::err_drv_invalid_value)
7136	<< A->getAsString(Args) << A->getValue();
7137	}
7138	} else if (!IsMSVCCompat) {
7139	// Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.
7140	GNUCVer = VersionTuple(4, 2, 1);
7141	}
7142	if (!GNUCVer.empty()) {
7143	CmdArgs.push_back(
7144	Elt: Args.MakeArgString(Str: "-fgnuc-version=" + GNUCVer.getAsString()));
7145	}
7146
7147	VersionTuple MSVT = TC.computeMSVCVersion(D: &D, Args);
7148	if (!MSVT.empty())
7149	CmdArgs.push_back(
7150	Elt: Args.MakeArgString(Str: "-fms-compatibility-version=" + MSVT.getAsString()));
7151
7152	bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
7153	if (ImplyVCPPCVer) {
7154	StringRef LanguageStandard;
7155	if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
7156	Std = StdArg;
7157	LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
7158	.Case(S: "c11", Value: "-std=c11")
7159	.Case(S: "c17", Value: "-std=c17")
7160	.Default(Value: "");
7161	if (LanguageStandard.empty())
7162	D.Diag(clang::diag::warn_drv_unused_argument)
7163	<< StdArg->getAsString(Args);
7164	}
7165	CmdArgs.push_back(Elt: LanguageStandard.data());
7166	}
7167	if (ImplyVCPPCXXVer) {
7168	StringRef LanguageStandard;
7169	if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
7170	Std = StdArg;
7171	LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
7172	.Case(S: "c++14", Value: "-std=c++14")
7173	.Case(S: "c++17", Value: "-std=c++17")
7174	.Case(S: "c++20", Value: "-std=c++20")
7175	// TODO add c++23 and c++26 when MSVC supports it.
7176	.Case(S: "c++23preview", Value: "-std=c++23")
7177	.Case(S: "c++latest", Value: "-std=c++26")
7178	.Default(Value: "");
7179	if (LanguageStandard.empty())
7180	D.Diag(clang::diag::warn_drv_unused_argument)
7181	<< StdArg->getAsString(Args);
7182	}
7183
7184	if (LanguageStandard.empty()) {
7185	if (IsMSVC2015Compatible)
7186	LanguageStandard = "-std=c++14";
7187	else
7188	LanguageStandard = "-std=c++11";
7189	}
7190
7191	CmdArgs.push_back(Elt: LanguageStandard.data());
7192	}
7193
7194	Args.addOptInFlag(CmdArgs, options::OPT_fborland_extensions,
7195	options::OPT_fno_borland_extensions);
7196
7197	// -fno-declspec is default, except for PS4/PS5.
7198	if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
7199	RawTriple.isPS()))
7200	CmdArgs.push_back(Elt: "-fdeclspec");
7201	else if (Args.hasArg(options::OPT_fno_declspec))
7202	CmdArgs.push_back(Elt: "-fno-declspec"); // Explicitly disabling __declspec.
7203
7204	// -fthreadsafe-static is default, except for MSVC compatibility versions less
7205	// than 19.
7206	if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
7207	options::OPT_fno_threadsafe_statics,
7208	!types::isOpenCL(InputType) &&
7209	(!IsWindowsMSVC || IsMSVC2015Compatible)))
7210	CmdArgs.push_back(Elt: "-fno-threadsafe-statics");
7211
7212	if (!Args.hasFlag(options::OPT_fms_tls_guards, options::OPT_fno_ms_tls_guards,
7213	true))
7214	CmdArgs.push_back(Elt: "-fno-ms-tls-guards");
7215
7216	// Add -fno-assumptions, if it was specified.
7217	if (!Args.hasFlag(options::OPT_fassumptions, options::OPT_fno_assumptions,
7218	true))
7219	CmdArgs.push_back(Elt: "-fno-assumptions");
7220
7221	// -fgnu-keywords default varies depending on language; only pass if
7222	// specified.
7223	Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,
7224	options::OPT_fno_gnu_keywords);
7225
7226	Args.addOptInFlag(CmdArgs, options::OPT_fgnu89_inline,
7227	options::OPT_fno_gnu89_inline);
7228
7229	const Arg *InlineArg = Args.getLastArg(options::OPT_finline_functions,
7230	options::OPT_finline_hint_functions,
7231	options::OPT_fno_inline_functions);
7232	if (Arg *A = Args.getLastArg(options::OPT_finline, options::OPT_fno_inline)) {
7233	if (A->getOption().matches(options::OPT_fno_inline))
7234	A->render(Args, Output&: CmdArgs);
7235	} else if (InlineArg) {
7236	InlineArg->render(Args, Output&: CmdArgs);
7237	}
7238
7239	Args.AddLastArg(CmdArgs, options::OPT_finline_max_stacksize_EQ);
7240
7241	// FIXME: Find a better way to determine whether we are in C++20.
7242	bool HaveCxx20 =
7243	Std &&
7244	(Std->containsValue(Value: "c++2a") || Std->containsValue(Value: "gnu++2a") ||
7245	Std->containsValue(Value: "c++20") || Std->containsValue(Value: "gnu++20") ||
7246	Std->containsValue(Value: "c++2b") || Std->containsValue(Value: "gnu++2b") ||
7247	Std->containsValue(Value: "c++23") || Std->containsValue(Value: "gnu++23") ||
7248	Std->containsValue(Value: "c++2c") || Std->containsValue(Value: "gnu++2c") ||
7249	Std->containsValue(Value: "c++26") || Std->containsValue(Value: "gnu++26") ||
7250	Std->containsValue(Value: "c++latest") || Std->containsValue(Value: "gnu++latest"));
7251	bool HaveModules =
7252	RenderModulesOptions(C, D, Args, Input, Output, HaveStd20: HaveCxx20, CmdArgs);
7253
7254	// -fdelayed-template-parsing is default when targeting MSVC.
7255	// Many old Windows SDK versions require this to parse.
7256	//
7257	// According to
7258	// https://learn.microsoft.com/en-us/cpp/build/reference/permissive-standards-conformance?view=msvc-170,
7259	// MSVC actually defaults to -fno-delayed-template-parsing (/Zc:twoPhase-
7260	// with MSVC CLI) if using C++20. So we match the behavior with MSVC here to
7261	// not enable -fdelayed-template-parsing by default after C++20.
7262	//
7263	// FIXME: Given -fdelayed-template-parsing is a source of bugs, we should be
7264	// able to disable this by default at some point.
7265	if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
7266	options::OPT_fno_delayed_template_parsing,
7267	IsWindowsMSVC && !HaveCxx20)) {
7268	if (HaveCxx20)
7269	D.Diag(clang::diag::warn_drv_delayed_template_parsing_after_cxx20);
7270
7271	CmdArgs.push_back(Elt: "-fdelayed-template-parsing");
7272	}
7273
7274	if (Args.hasFlag(options::OPT_fpch_validate_input_files_content,
7275	options::OPT_fno_pch_validate_input_files_content, false))
7276	CmdArgs.push_back(Elt: "-fvalidate-ast-input-files-content");
7277	if (Args.hasFlag(options::OPT_fpch_instantiate_templates,
7278	options::OPT_fno_pch_instantiate_templates, false))
7279	CmdArgs.push_back(Elt: "-fpch-instantiate-templates");
7280	if (Args.hasFlag(options::OPT_fpch_codegen, options::OPT_fno_pch_codegen,
7281	false))
7282	CmdArgs.push_back(Elt: "-fmodules-codegen");
7283	if (Args.hasFlag(options::OPT_fpch_debuginfo, options::OPT_fno_pch_debuginfo,
7284	false))
7285	CmdArgs.push_back(Elt: "-fmodules-debuginfo");
7286
7287	ObjCRuntime Runtime = AddObjCRuntimeArgs(args: Args, inputs: Inputs, cmdArgs&: CmdArgs, rewrite: rewriteKind);
7288	RenderObjCOptions(TC, D, T: RawTriple, Args, Runtime, InferCovariantReturns: rewriteKind != RK_None,
7289	Input, CmdArgs);
7290
7291	if (types::isObjC(Input.getType()) &&
7292	Args.hasFlag(options::OPT_fobjc_encode_cxx_class_template_spec,
7293	options::OPT_fno_objc_encode_cxx_class_template_spec,
7294	!Runtime.isNeXTFamily()))
7295	CmdArgs.push_back(Elt: "-fobjc-encode-cxx-class-template-spec");
7296
7297	if (Args.hasFlag(options::OPT_fapplication_extension,
7298	options::OPT_fno_application_extension, false))
7299	CmdArgs.push_back(Elt: "-fapplication-extension");
7300
7301	// Handle GCC-style exception args.
7302	bool EH = false;
7303	if (!C.getDriver().IsCLMode())
7304	EH = addExceptionArgs(Args, InputType, TC, KernelOrKext, objcRuntime: Runtime, CmdArgs);
7305
7306	// Handle exception personalities
7307	Arg *A = Args.getLastArg(
7308	options::OPT_fsjlj_exceptions, options::OPT_fseh_exceptions,
7309	options::OPT_fdwarf_exceptions, options::OPT_fwasm_exceptions);
7310	if (A) {
7311	const Option &Opt = A->getOption();
7312	if (Opt.matches(options::OPT_fsjlj_exceptions))
7313	CmdArgs.push_back(Elt: "-exception-model=sjlj");
7314	if (Opt.matches(options::OPT_fseh_exceptions))
7315	CmdArgs.push_back(Elt: "-exception-model=seh");
7316	if (Opt.matches(options::OPT_fdwarf_exceptions))
7317	CmdArgs.push_back(Elt: "-exception-model=dwarf");
7318	if (Opt.matches(options::OPT_fwasm_exceptions))
7319	CmdArgs.push_back(Elt: "-exception-model=wasm");
7320	} else {
7321	switch (TC.GetExceptionModel(Args)) {
7322	default:
7323	break;
7324	case llvm::ExceptionHandling::DwarfCFI:
7325	CmdArgs.push_back(Elt: "-exception-model=dwarf");
7326	break;
7327	case llvm::ExceptionHandling::SjLj:
7328	CmdArgs.push_back(Elt: "-exception-model=sjlj");
7329	break;
7330	case llvm::ExceptionHandling::WinEH:
7331	CmdArgs.push_back(Elt: "-exception-model=seh");
7332	break;
7333	}
7334	}
7335
7336	// Unwind v2 (epilog) information for x64 Windows.
7337	Args.addOptInFlag(CmdArgs, options::OPT_fwinx64_eh_unwindv2,
7338	options::OPT_fno_winx64_eh_unwindv2);
7339
7340	// C++ "sane" operator new.
7341	Args.addOptOutFlag(CmdArgs, options::OPT_fassume_sane_operator_new,
7342	options::OPT_fno_assume_sane_operator_new);
7343
7344	// -fassume-unique-vtables is on by default.
7345	Args.addOptOutFlag(CmdArgs, options::OPT_fassume_unique_vtables,
7346	options::OPT_fno_assume_unique_vtables);
7347
7348	// -fsized-deallocation is on by default in C++14 onwards and otherwise off
7349	// by default.
7350	Args.addLastArg(CmdArgs, options::OPT_fsized_deallocation,
7351	options::OPT_fno_sized_deallocation);
7352
7353	// -faligned-allocation is on by default in C++17 onwards and otherwise off
7354	// by default.
7355	if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
7356	options::OPT_fno_aligned_allocation,
7357	options::OPT_faligned_new_EQ)) {
7358	if (A->getOption().matches(options::OPT_fno_aligned_allocation))
7359	CmdArgs.push_back(Elt: "-fno-aligned-allocation");
7360	else
7361	CmdArgs.push_back(Elt: "-faligned-allocation");
7362	}
7363
7364	// The default new alignment can be specified using a dedicated option or via
7365	// a GCC-compatible option that also turns on aligned allocation.
7366	if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
7367	options::OPT_faligned_new_EQ))
7368	CmdArgs.push_back(
7369	Elt: Args.MakeArgString(Str: Twine("-fnew-alignment=") + A->getValue()));
7370
7371	// -fconstant-cfstrings is default, and may be subject to argument translation
7372	// on Darwin.
7373	if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
7374	options::OPT_fno_constant_cfstrings, true) ||
7375	!Args.hasFlag(options::OPT_mconstant_cfstrings,
7376	options::OPT_mno_constant_cfstrings, true))
7377	CmdArgs.push_back(Elt: "-fno-constant-cfstrings");
7378
7379	Args.addOptInFlag(CmdArgs, options::OPT_fpascal_strings,
7380	options::OPT_fno_pascal_strings);
7381
7382	// Honor -fpack-struct= and -fpack-struct, if given. Note that
7383	// -fno-pack-struct doesn't apply to -fpack-struct=.
7384	if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
7385	std::string PackStructStr = "-fpack-struct=";
7386	PackStructStr += A->getValue();
7387	CmdArgs.push_back(Elt: Args.MakeArgString(Str: PackStructStr));
7388	} else if (Args.hasFlag(options::OPT_fpack_struct,
7389	options::OPT_fno_pack_struct, false)) {
7390	CmdArgs.push_back(Elt: "-fpack-struct=1");
7391	}
7392
7393	// Handle -fmax-type-align=N and -fno-type-align
7394	bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
7395	if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
7396	if (!SkipMaxTypeAlign) {
7397	std::string MaxTypeAlignStr = "-fmax-type-align=";
7398	MaxTypeAlignStr += A->getValue();
7399	CmdArgs.push_back(Elt: Args.MakeArgString(Str: MaxTypeAlignStr));
7400	}
7401	} else if (RawTriple.isOSDarwin()) {
7402	if (!SkipMaxTypeAlign) {
7403	std::string MaxTypeAlignStr = "-fmax-type-align=16";
7404	CmdArgs.push_back(Elt: Args.MakeArgString(Str: MaxTypeAlignStr));
7405	}
7406	}
7407
7408	if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))
7409	CmdArgs.push_back(Elt: "-Qn");
7410
7411	// -fno-common is the default, set -fcommon only when that flag is set.
7412	Args.addOptInFlag(CmdArgs, options::OPT_fcommon, options::OPT_fno_common);
7413
7414	// -fsigned-bitfields is default, and clang doesn't yet support
7415	// -funsigned-bitfields.
7416	if (!Args.hasFlag(options::OPT_fsigned_bitfields,
7417	options::OPT_funsigned_bitfields, true))
7418	D.Diag(diag::warn_drv_clang_unsupported)
7419	<< Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
7420
7421	// -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
7422	if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope, true))
7423	D.Diag(diag::err_drv_clang_unsupported)
7424	<< Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
7425
7426	// -finput_charset=UTF-8 is default. Reject others
7427	if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
7428	StringRef value = inputCharset->getValue();
7429	if (!value.equals_insensitive("utf-8"))
7430	D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
7431	<< value;
7432	}
7433
7434	// -fexec_charset=UTF-8 is default. Reject others
7435	if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
7436	StringRef value = execCharset->getValue();
7437	if (!value.equals_insensitive("utf-8"))
7438	D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
7439	<< value;
7440	}
7441
7442	RenderDiagnosticsOptions(D, Args, CmdArgs);
7443
7444	Args.addOptInFlag(CmdArgs, options::OPT_fasm_blocks,
7445	options::OPT_fno_asm_blocks);
7446
7447	Args.addOptOutFlag(CmdArgs, options::OPT_fgnu_inline_asm,
7448	options::OPT_fno_gnu_inline_asm);
7449
7450	handleVectorizeLoopsArgs(Args, CmdArgs);
7451	handleVectorizeSLPArgs(Args, CmdArgs);
7452
7453	StringRef VecWidth = parseMPreferVectorWidthOption(Diags&: D.getDiags(), Args);
7454	if (!VecWidth.empty())
7455	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mprefer-vector-width=" + VecWidth));
7456
7457	Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);
7458	Args.AddLastArg(CmdArgs,
7459	options::OPT_fsanitize_undefined_strip_path_components_EQ);
7460
7461	// -fdollars-in-identifiers default varies depending on platform and
7462	// language; only pass if specified.
7463	if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
7464	options::OPT_fno_dollars_in_identifiers)) {
7465	if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
7466	CmdArgs.push_back(Elt: "-fdollars-in-identifiers");
7467	else
7468	CmdArgs.push_back(Elt: "-fno-dollars-in-identifiers");
7469	}
7470
7471	Args.addOptInFlag(CmdArgs, options::OPT_fapple_pragma_pack,
7472	options::OPT_fno_apple_pragma_pack);
7473
7474	// Remarks can be enabled with any of the `-f.*optimization-record.*` flags.
7475	if (willEmitRemarks(Args) && checkRemarksOptions(D, Args, Triple))
7476	renderRemarksOptions(Args, CmdArgs, Triple, Input, Output, JA);
7477
7478	bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,
7479	options::OPT_fno_rewrite_imports, false);
7480	if (RewriteImports)
7481	CmdArgs.push_back(Elt: "-frewrite-imports");
7482
7483	Args.addOptInFlag(CmdArgs, options::OPT_fdirectives_only,
7484	options::OPT_fno_directives_only);
7485
7486	// Enable rewrite includes if the user's asked for it or if we're generating
7487	// diagnostics.
7488	// TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
7489	// nice to enable this when doing a crashdump for modules as well.
7490	if (Args.hasFlag(options::OPT_frewrite_includes,
7491	options::OPT_fno_rewrite_includes, false) ||
7492	(C.isForDiagnostics() && !HaveModules))
7493	CmdArgs.push_back(Elt: "-frewrite-includes");
7494
7495	if (Args.hasFlag(options::OPT_fzos_extensions,
7496	options::OPT_fno_zos_extensions, false))
7497	CmdArgs.push_back(Elt: "-fzos-extensions");
7498	else if (Args.hasArg(options::OPT_fno_zos_extensions))
7499	CmdArgs.push_back(Elt: "-fno-zos-extensions");
7500
7501	// Only allow -traditional or -traditional-cpp outside in preprocessing modes.
7502	if (Arg *A = Args.getLastArg(options::OPT_traditional,
7503	options::OPT_traditional_cpp)) {
7504	if (isa<PreprocessJobAction>(Val: JA))
7505	CmdArgs.push_back(Elt: "-traditional-cpp");
7506	else
7507	D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
7508	}
7509
7510	Args.AddLastArg(CmdArgs, options::OPT_dM);
7511	Args.AddLastArg(CmdArgs, options::OPT_dD);
7512	Args.AddLastArg(CmdArgs, options::OPT_dI);
7513
7514	Args.AddLastArg(CmdArgs, options::OPT_fmax_tokens_EQ);
7515
7516	// Handle serialized diagnostics.
7517	if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
7518	CmdArgs.push_back(Elt: "-serialize-diagnostic-file");
7519	CmdArgs.push_back(Elt: Args.MakeArgString(Str: A->getValue()));
7520	}
7521
7522	if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
7523	CmdArgs.push_back(Elt: "-fretain-comments-from-system-headers");
7524
7525	Args.AddLastArg(CmdArgs, options::OPT_fextend_variable_liveness_EQ);
7526
7527	// Forward -fcomment-block-commands to -cc1.
7528	Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
7529	// Forward -fparse-all-comments to -cc1.
7530	Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
7531
7532	// Turn -fplugin=name.so into -load name.so
7533	for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
7534	CmdArgs.push_back("-load");
7535	CmdArgs.push_back(A->getValue());
7536	A->claim();
7537	}
7538
7539	// Turn -fplugin-arg-pluginname-key=value into
7540	// -plugin-arg-pluginname key=value
7541	// GCC has an actual plugin_argument struct with key/value pairs that it
7542	// passes to its plugins, but we don't, so just pass it on as-is.
7543	//
7544	// The syntax for -fplugin-arg- is ambiguous if both plugin name and
7545	// argument key are allowed to contain dashes. GCC therefore only
7546	// allows dashes in the key. We do the same.
7547	for (const Arg *A : Args.filtered(options::OPT_fplugin_arg)) {
7548	auto ArgValue = StringRef(A->getValue());
7549	auto FirstDashIndex = ArgValue.find('-');
7550	StringRef PluginName = ArgValue.substr(0, FirstDashIndex);
7551	StringRef Arg = ArgValue.substr(FirstDashIndex + 1);
7552
7553	A->claim();
7554	if (FirstDashIndex == StringRef::npos || Arg.empty()) {
7555	if (PluginName.empty()) {
7556	D.Diag(diag::warn_drv_missing_plugin_name) << A->getAsString(Args);
7557	} else {
7558	D.Diag(diag::warn_drv_missing_plugin_arg)
7559	<< PluginName << A->getAsString(Args);
7560	}
7561	continue;
7562	}
7563
7564	CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-arg-") + PluginName));
7565	CmdArgs.push_back(Args.MakeArgString(Arg));
7566	}
7567
7568	// Forward -fpass-plugin=name.so to -cc1.
7569	for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {
7570	CmdArgs.push_back(
7571	Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));
7572	A->claim();
7573	}
7574
7575	// Forward --vfsoverlay to -cc1.
7576	for (const Arg *A : Args.filtered(options::OPT_vfsoverlay)) {
7577	CmdArgs.push_back("--vfsoverlay");
7578	CmdArgs.push_back(A->getValue());
7579	A->claim();
7580	}
7581
7582	Args.addOptInFlag(CmdArgs, options::OPT_fsafe_buffer_usage_suggestions,
7583	options::OPT_fno_safe_buffer_usage_suggestions);
7584
7585	Args.addOptInFlag(CmdArgs, options::OPT_fexperimental_late_parse_attributes,
7586	options::OPT_fno_experimental_late_parse_attributes);
7587
7588	if (Args.hasFlag(options::OPT_funique_source_file_names,
7589	options::OPT_fno_unique_source_file_names, false)) {
7590	if (Arg *A = Args.getLastArg(options::OPT_unique_source_file_identifier_EQ))
7591	A->render(Args, Output&: CmdArgs);
7592	else
7593	CmdArgs.push_back(Elt: Args.MakeArgString(
7594	Str: Twine("-funique-source-file-identifier=") + Input.getBaseInput()));
7595	}
7596
7597	// Setup statistics file output.
7598	SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);
7599	if (!StatsFile.empty()) {
7600	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-stats-file=") + StatsFile));
7601	if (D.CCPrintInternalStats)
7602	CmdArgs.push_back(Elt: "-stats-file-append");
7603	}
7604
7605	// Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
7606	// parser.
7607	for (auto Arg : Args.filtered(options::OPT_Xclang)) {
7608	Arg->claim();
7609	// -finclude-default-header flag is for preprocessor,
7610	// do not pass it to other cc1 commands when save-temps is enabled
7611	if (C.getDriver().isSaveTempsEnabled() &&
7612	!isa<PreprocessJobAction>(JA)) {
7613	if (StringRef(Arg->getValue()) == "-finclude-default-header")
7614	continue;
7615	}
7616	CmdArgs.push_back(Arg->getValue());
7617	}
7618	for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
7619	A->claim();
7620
7621	// We translate this by hand to the -cc1 argument, since nightly test uses
7622	// it and developers have been trained to spell it with -mllvm. Both
7623	// spellings are now deprecated and should be removed.
7624	if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
7625	CmdArgs.push_back("-disable-llvm-optzns");
7626	} else {
7627	A->render(Args, CmdArgs);
7628	}
7629	}
7630
7631	// This needs to run after -Xclang argument forwarding to pick up the target
7632	// features enabled through -Xclang -target-feature flags.
7633	SanitizeArgs.addArgs(TC, Args, CmdArgs, InputType);
7634
7635	#if CLANG_ENABLE_CIR
7636	// Forward -mmlir arguments to to the MLIR option parser.
7637	for (const Arg *A : Args.filtered(options::OPT_mmlir)) {
7638	A->claim();
7639	A->render(Args, CmdArgs);
7640	}
7641	#endif // CLANG_ENABLE_CIR
7642
7643	// With -save-temps, we want to save the unoptimized bitcode output from the
7644	// CompileJobAction, use -disable-llvm-passes to get pristine IR generated
7645	// by the frontend.
7646	// When -fembed-bitcode is enabled, optimized bitcode is emitted because it
7647	// has slightly different breakdown between stages.
7648	// FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
7649	// pristine IR generated by the frontend. Ideally, a new compile action should
7650	// be added so both IR can be captured.
7651	if ((C.getDriver().isSaveTempsEnabled() ||
7652	JA.isHostOffloading(OKind: Action::OFK_OpenMP)) &&
7653	!(C.getDriver().embedBitcodeInObject() && !IsUsingLTO) &&
7654	isa<CompileJobAction>(Val: JA))
7655	CmdArgs.push_back(Elt: "-disable-llvm-passes");
7656
7657	Args.AddAllArgs(CmdArgs, options::OPT_undef);
7658
7659	const char *Exec = D.getClangProgramPath();
7660
7661	// Optionally embed the -cc1 level arguments into the debug info or a
7662	// section, for build analysis.
7663	// Also record command line arguments into the debug info if
7664	// -grecord-gcc-switches options is set on.
7665	// By default, -gno-record-gcc-switches is set on and no recording.
7666	auto GRecordSwitches = false;
7667	auto FRecordSwitches = false;
7668	if (shouldRecordCommandLine(TC, Args, FRecordCommandLine&: FRecordSwitches, GRecordCommandLine&: GRecordSwitches)) {
7669	auto FlagsArgString = renderEscapedCommandLine(TC, Args);
7670	if (TC.UseDwarfDebugFlags() || GRecordSwitches) {
7671	CmdArgs.push_back(Elt: "-dwarf-debug-flags");
7672	CmdArgs.push_back(Elt: FlagsArgString);
7673	}
7674	if (FRecordSwitches) {
7675	CmdArgs.push_back(Elt: "-record-command-line");
7676	CmdArgs.push_back(Elt: FlagsArgString);
7677	}
7678	}
7679
7680	// Host-side offloading compilation receives all device-side outputs. Include
7681	// them in the host compilation depending on the target. If the host inputs
7682	// are not empty we use the new-driver scheme, otherwise use the old scheme.
7683	if ((IsCuda || IsHIP) && CudaDeviceInput) {
7684	CmdArgs.push_back(Elt: "-fcuda-include-gpubinary");
7685	CmdArgs.push_back(Elt: CudaDeviceInput->getFilename());
7686	} else if (!HostOffloadingInputs.empty()) {
7687	if ((IsCuda || IsHIP) && !IsRDCMode) {
7688	assert(HostOffloadingInputs.size() == 1 && "Only one input expected");
7689	CmdArgs.push_back(Elt: "-fcuda-include-gpubinary");
7690	CmdArgs.push_back(Elt: HostOffloadingInputs.front().getFilename());
7691	} else {
7692	for (const InputInfo Input : HostOffloadingInputs)
7693	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-fembed-offload-object=" +
7694	TC.getInputFilename(Input)));
7695	}
7696	}
7697
7698	if (IsCuda) {
7699	if (Args.hasFlag(options::OPT_fcuda_short_ptr,
7700	options::OPT_fno_cuda_short_ptr, false))
7701	CmdArgs.push_back(Elt: "-fcuda-short-ptr");
7702	}
7703
7704	if (IsCuda || IsHIP) {
7705	// Determine the original source input.
7706	const Action *SourceAction = &JA;
7707	while (SourceAction->getKind() != Action::InputClass) {
7708	assert(!SourceAction->getInputs().empty() && "unexpected root action!");
7709	SourceAction = SourceAction->getInputs()[0];
7710	}
7711	auto CUID = cast<InputAction>(Val: SourceAction)->getId();
7712	if (!CUID.empty())
7713	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("-cuid=") + Twine(CUID)));
7714
7715	// -ffast-math turns on -fgpu-approx-transcendentals implicitly, but will
7716	// be overriden by -fno-gpu-approx-transcendentals.
7717	bool UseApproxTranscendentals = Args.hasFlag(
7718	options::OPT_ffast_math, options::OPT_fno_fast_math, false);
7719	if (Args.hasFlag(options::OPT_fgpu_approx_transcendentals,
7720	options::OPT_fno_gpu_approx_transcendentals,
7721	UseApproxTranscendentals))
7722	CmdArgs.push_back(Elt: "-fgpu-approx-transcendentals");
7723	} else {
7724	Args.claimAllArgs(options::OPT_fgpu_approx_transcendentals,
7725	options::OPT_fno_gpu_approx_transcendentals);
7726	}
7727
7728	if (IsHIP) {
7729	CmdArgs.push_back(Elt: "-fcuda-allow-variadic-functions");
7730	Args.AddLastArg(CmdArgs, options::OPT_fgpu_default_stream_EQ);
7731	}
7732
7733	Args.AddAllArgs(CmdArgs,
7734	options::OPT_fsanitize_undefined_ignore_overflow_pattern_EQ);
7735
7736	Args.AddLastArg(CmdArgs, options::OPT_foffload_uniform_block,
7737	options::OPT_fno_offload_uniform_block);
7738
7739	Args.AddLastArg(CmdArgs, options::OPT_foffload_implicit_host_device_templates,
7740	options::OPT_fno_offload_implicit_host_device_templates);
7741
7742	if (IsCudaDevice || IsHIPDevice) {
7743	StringRef InlineThresh =
7744	Args.getLastArgValue(options::OPT_fgpu_inline_threshold_EQ);
7745	if (!InlineThresh.empty()) {
7746	std::string ArgStr =
7747	std::string("-inline-threshold=") + InlineThresh.str();
7748	CmdArgs.append(IL: {"-mllvm", Args.MakeArgStringRef(Str: ArgStr)});
7749	}
7750	}
7751
7752	if (IsHIPDevice)
7753	Args.addOptOutFlag(CmdArgs,
7754	options::OPT_fhip_fp32_correctly_rounded_divide_sqrt,
7755	options::OPT_fno_hip_fp32_correctly_rounded_divide_sqrt);
7756
7757	// OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path
7758	// to specify the result of the compile phase on the host, so the meaningful
7759	// device declarations can be identified. Also, -fopenmp-is-target-device is
7760	// passed along to tell the frontend that it is generating code for a device,
7761	// so that only the relevant declarations are emitted.
7762	if (IsOpenMPDevice) {
7763	CmdArgs.push_back(Elt: "-fopenmp-is-target-device");
7764	// If we are offloading cuda/hip via llvm, it's also "cuda device code".
7765	if (Args.hasArg(options::OPT_foffload_via_llvm))
7766	CmdArgs.push_back(Elt: "-fcuda-is-device");
7767
7768	if (OpenMPDeviceInput) {
7769	CmdArgs.push_back(Elt: "-fopenmp-host-ir-file-path");
7770	CmdArgs.push_back(Elt: Args.MakeArgString(Str: OpenMPDeviceInput->getFilename()));
7771	}
7772	}
7773
7774	if (Triple.isAMDGPU()) {
7775	handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs);
7776
7777	Args.addOptInFlag(CmdArgs, options::OPT_munsafe_fp_atomics,
7778	options::OPT_mno_unsafe_fp_atomics);
7779	Args.addOptOutFlag(CmdArgs, options::OPT_mamdgpu_ieee,
7780	options::OPT_mno_amdgpu_ieee);
7781	}
7782
7783	addOpenMPHostOffloadingArgs(C, JA, Args, CmdArgs);
7784
7785	bool VirtualFunctionElimination =
7786	Args.hasFlag(options::OPT_fvirtual_function_elimination,
7787	options::OPT_fno_virtual_function_elimination, false);
7788	if (VirtualFunctionElimination) {
7789	// VFE requires full LTO (currently, this might be relaxed to allow ThinLTO
7790	// in the future).
7791	if (LTOMode != LTOK_Full)
7792	D.Diag(diag::err_drv_argument_only_allowed_with)
7793	<< "-fvirtual-function-elimination"
7794	<< "-flto=full";
7795
7796	CmdArgs.push_back(Elt: "-fvirtual-function-elimination");
7797	}
7798
7799	// VFE requires whole-program-vtables, and enables it by default.
7800	bool WholeProgramVTables = Args.hasFlag(
7801	options::OPT_fwhole_program_vtables,
7802	options::OPT_fno_whole_program_vtables, VirtualFunctionElimination);
7803	if (VirtualFunctionElimination && !WholeProgramVTables) {
7804	D.Diag(diag::err_drv_argument_not_allowed_with)
7805	<< "-fno-whole-program-vtables"
7806	<< "-fvirtual-function-elimination";
7807	}
7808
7809	if (WholeProgramVTables) {
7810	// PS4 uses the legacy LTO API, which does not support this feature in
7811	// ThinLTO mode.
7812	bool IsPS4 = getToolChain().getTriple().isPS4();
7813
7814	// Check if we passed LTO options but they were suppressed because this is a
7815	// device offloading action, or we passed device offload LTO options which
7816	// were suppressed because this is not the device offload action.
7817	// Check if we are using PS4 in regular LTO mode.
7818	// Otherwise, issue an error.
7819
7820	auto OtherLTOMode =
7821	IsDeviceOffloadAction ? D.getLTOMode() : D.getOffloadLTOMode();
7822	auto OtherIsUsingLTO = OtherLTOMode != LTOK_None;
7823
7824	if ((!IsUsingLTO && !OtherIsUsingLTO) ||
7825	(IsPS4 && !UnifiedLTO && (D.getLTOMode() != LTOK_Full)))
7826	D.Diag(diag::err_drv_argument_only_allowed_with)
7827	<< "-fwhole-program-vtables"
7828	<< ((IsPS4 && !UnifiedLTO) ? "-flto=full" : "-flto");
7829
7830	// Propagate -fwhole-program-vtables if this is an LTO compile.
7831	if (IsUsingLTO)
7832	CmdArgs.push_back(Elt: "-fwhole-program-vtables");
7833	}
7834
7835	bool DefaultsSplitLTOUnit =
7836	((WholeProgramVTables || SanitizeArgs.needsLTO()) &&
7837	(LTOMode == LTOK_Full || TC.canSplitThinLTOUnit())) ||
7838	(!Triple.isPS4() && UnifiedLTO);
7839	bool SplitLTOUnit =
7840	Args.hasFlag(options::OPT_fsplit_lto_unit,
7841	options::OPT_fno_split_lto_unit, DefaultsSplitLTOUnit);
7842	if (SanitizeArgs.needsLTO() && !SplitLTOUnit)
7843	D.Diag(diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"
7844	<< "-fsanitize=cfi";
7845	if (SplitLTOUnit)
7846	CmdArgs.push_back(Elt: "-fsplit-lto-unit");
7847
7848	if (Arg *A = Args.getLastArg(options::OPT_ffat_lto_objects,
7849	options::OPT_fno_fat_lto_objects)) {
7850	if (IsUsingLTO && A->getOption().matches(options::OPT_ffat_lto_objects)) {
7851	assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);
7852	if (!Triple.isOSBinFormatELF()) {
7853	D.Diag(diag::err_drv_unsupported_opt_for_target)
7854	<< A->getAsString(Args) << TC.getTripleString();
7855	}
7856	CmdArgs.push_back(Elt: Args.MakeArgString(
7857	Str: Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));
7858	CmdArgs.push_back(Elt: "-flto-unit");
7859	CmdArgs.push_back(Elt: "-ffat-lto-objects");
7860	A->render(Args, Output&: CmdArgs);
7861	}
7862	}
7863
7864	if (Arg *A = Args.getLastArg(options::OPT_fglobal_isel,
7865	options::OPT_fno_global_isel)) {
7866	CmdArgs.push_back(Elt: "-mllvm");
7867	if (A->getOption().matches(options::OPT_fglobal_isel)) {
7868	CmdArgs.push_back(Elt: "-global-isel=1");
7869
7870	// GISel is on by default on AArch64 -O0, so don't bother adding
7871	// the fallback remarks for it. Other combinations will add a warning of
7872	// some kind.
7873	bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;
7874	bool IsOptLevelSupported = false;
7875
7876	Arg *A = Args.getLastArg(options::OPT_O_Group);
7877	if (Triple.getArch() == llvm::Triple::aarch64) {
7878	if (!A || A->getOption().matches(options::OPT_O0))
7879	IsOptLevelSupported = true;
7880	}
7881	if (!IsArchSupported || !IsOptLevelSupported) {
7882	CmdArgs.push_back(Elt: "-mllvm");
7883	CmdArgs.push_back(Elt: "-global-isel-abort=2");
7884
7885	if (!IsArchSupported)
7886	D.Diag(diag::warn_drv_global_isel_incomplete) << Triple.getArchName();
7887	else
7888	D.Diag(diag::warn_drv_global_isel_incomplete_opt);
7889	}
7890	} else {
7891	CmdArgs.push_back(Elt: "-global-isel=0");
7892	}
7893	}
7894
7895	if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
7896	options::OPT_fno_force_enable_int128)) {
7897	if (A->getOption().matches(options::OPT_fforce_enable_int128))
7898	CmdArgs.push_back(Elt: "-fforce-enable-int128");
7899	}
7900
7901	Args.addOptInFlag(CmdArgs, options::OPT_fkeep_static_consts,
7902	options::OPT_fno_keep_static_consts);
7903	Args.addOptInFlag(CmdArgs, options::OPT_fkeep_persistent_storage_variables,
7904	options::OPT_fno_keep_persistent_storage_variables);
7905	Args.addOptInFlag(CmdArgs, options::OPT_fcomplete_member_pointers,
7906	options::OPT_fno_complete_member_pointers);
7907	if (Arg *A = Args.getLastArg(options::OPT_cxx_static_destructors_EQ))
7908	A->render(Args, Output&: CmdArgs);
7909
7910	addMachineOutlinerArgs(D, Args, CmdArgs, Triple, /*IsLTO=*/false);
7911
7912	addOutlineAtomicsArgs(D, TC: getToolChain(), Args, CmdArgs, Triple);
7913
7914	if (Triple.isAArch64() &&
7915	(Args.hasArg(options::OPT_mno_fmv) ||
7916	(Triple.isAndroid() && Triple.isAndroidVersionLT(23)) ||
7917	getToolChain().GetRuntimeLibType(Args) != ToolChain::RLT_CompilerRT)) {
7918	// Disable Function Multiversioning on AArch64 target.
7919	CmdArgs.push_back(Elt: "-target-feature");
7920	CmdArgs.push_back(Elt: "-fmv");
7921	}
7922
7923	if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,
7924	(TC.getTriple().isOSBinFormatELF() ||
7925	TC.getTriple().isOSBinFormatCOFF()) &&
7926	!TC.getTriple().isPS4() && !TC.getTriple().isVE() &&
7927	!TC.getTriple().isOSNetBSD() &&
7928	!Distro(D.getVFS(), TC.getTriple()).IsGentoo() &&
7929	!TC.getTriple().isAndroid() && TC.useIntegratedAs()))
7930	CmdArgs.push_back(Elt: "-faddrsig");
7931
7932	if ((Triple.isOSBinFormatELF() || Triple.isOSBinFormatMachO()) &&
7933	(EH || UnwindTables || AsyncUnwindTables ||
7934	DebugInfoKind != llvm::codegenoptions::NoDebugInfo))
7935	CmdArgs.push_back(Elt: "-D__GCC_HAVE_DWARF2_CFI_ASM=1");
7936
7937	if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {
7938	std::string Str = A->getAsString(Args);
7939	if (!TC.getTriple().isOSBinFormatELF())
7940	D.Diag(diag::err_drv_unsupported_opt_for_target)
7941	<< Str << TC.getTripleString();
7942	CmdArgs.push_back(Elt: Args.MakeArgString(Str));
7943	}
7944
7945	// Add the "-o out -x type src.c" flags last. This is done primarily to make
7946	// the -cc1 command easier to edit when reproducing compiler crashes.
7947	if (Output.getType() == types::TY_Dependencies) {
7948	// Handled with other dependency code.
7949	} else if (Output.isFilename()) {
7950	if (Output.getType() == clang::driver::types::TY_IFS_CPP ||
7951	Output.getType() == clang::driver::types::TY_IFS) {
7952	SmallString<128> OutputFilename(Output.getFilename());
7953	llvm::sys::path::replace_extension(path&: OutputFilename, extension: "ifs");
7954	CmdArgs.push_back(Elt: "-o");
7955	CmdArgs.push_back(Elt: Args.MakeArgString(Str: OutputFilename));
7956	} else {
7957	CmdArgs.push_back(Elt: "-o");
7958	CmdArgs.push_back(Elt: Output.getFilename());
7959	}
7960	} else {
7961	assert(Output.isNothing() && "Invalid output.");
7962	}
7963
7964	addDashXForInput(Args, Input, CmdArgs);
7965
7966	ArrayRef<InputInfo> FrontendInputs = Input;
7967	if (IsExtractAPI)
7968	FrontendInputs = ExtractAPIInputs;
7969	else if (Input.isNothing())
7970	FrontendInputs = {};
7971
7972	for (const InputInfo &Input : FrontendInputs) {
7973	if (Input.isFilename())
7974	CmdArgs.push_back(Elt: Input.getFilename());
7975	else
7976	Input.getInputArg().renderAsInput(Args, Output&: CmdArgs);
7977	}
7978
7979	if (D.CC1Main && !D.CCGenDiagnostics) {
7980	// Invoke the CC1 directly in this process
7981	C.addCommand(C: std::make_unique<CC1Command>(
7982	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
7983	args: Output, args: D.getPrependArg()));
7984	} else {
7985	C.addCommand(C: std::make_unique<Command>(
7986	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
7987	args: Output, args: D.getPrependArg()));
7988	}
7989
7990	// Make the compile command echo its inputs for /showFilenames.
7991	if (Output.getType() == types::TY_Object &&
7992	Args.hasFlag(options::OPT__SLASH_showFilenames,
7993	options::OPT__SLASH_showFilenames_, false)) {
7994	C.getJobs().getJobs().back()->PrintInputFilenames = true;
7995	}
7996
7997	if (Arg *A = Args.getLastArg(options::OPT_pg))
7998	if (FPKeepKind == CodeGenOptions::FramePointerKind::None &&
7999	!Args.hasArg(options::OPT_mfentry))
8000	D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
8001	<< A->getAsString(Args);
8002
8003	// Claim some arguments which clang supports automatically.
8004
8005	// -fpch-preprocess is used with gcc to add a special marker in the output to
8006	// include the PCH file.
8007	Args.ClaimAllArgs(options::OPT_fpch_preprocess);
8008
8009	// Claim some arguments which clang doesn't support, but we don't
8010	// care to warn the user about.
8011	Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
8012	Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
8013
8014	// Disable warnings for clang -E -emit-llvm foo.c
8015	Args.ClaimAllArgs(options::OPT_emit_llvm);
8016	}
8017
8018	Clang::Clang(const ToolChain &TC, bool HasIntegratedBackend)
8019	// CAUTION! The first constructor argument ("clang") is not arbitrary,
8020	// as it is for other tools. Some operations on a Tool actually test
8021	// whether that tool is Clang based on the Tool's Name as a string.
8022	: Tool("clang", "clang frontend", TC), HasBackend(HasIntegratedBackend) {}
8023
8024	Clang::~Clang() {}
8025
8026	/// Add options related to the Objective-C runtime/ABI.
8027	///
8028	/// Returns true if the runtime is non-fragile.
8029	ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
8030	const InputInfoList &inputs,
8031	ArgStringList &cmdArgs,
8032	RewriteKind rewriteKind) const {
8033	// Look for the controlling runtime option.
8034	Arg *runtimeArg =
8035	args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
8036	options::OPT_fobjc_runtime_EQ);
8037
8038	// Just forward -fobjc-runtime= to the frontend. This supercedes
8039	// options about fragility.
8040	if (runtimeArg &&
8041	runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
8042	ObjCRuntime runtime;
8043	StringRef value = runtimeArg->getValue();
8044	if (runtime.tryParse(input: value)) {
8045	getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
8046	<< value;
8047	}
8048	if ((runtime.getKind() == ObjCRuntime::GNUstep) &&
8049	(runtime.getVersion() >= VersionTuple(2, 0)))
8050	if (!getToolChain().getTriple().isOSBinFormatELF() &&
8051	!getToolChain().getTriple().isOSBinFormatCOFF()) {
8052	getToolChain().getDriver().Diag(
8053	diag::err_drv_gnustep_objc_runtime_incompatible_binary)
8054	<< runtime.getVersion().getMajor();
8055	}
8056
8057	runtimeArg->render(Args: args, Output&: cmdArgs);
8058	return runtime;
8059	}
8060
8061	// Otherwise, we'll need the ABI "version". Version numbers are
8062	// slightly confusing for historical reasons:
8063	// 1 - Traditional "fragile" ABI
8064	// 2 - Non-fragile ABI, version 1
8065	// 3 - Non-fragile ABI, version 2
8066	unsigned objcABIVersion = 1;
8067	// If -fobjc-abi-version= is present, use that to set the version.
8068	if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
8069	StringRef value = abiArg->getValue();
8070	if (value == "1")
8071	objcABIVersion = 1;
8072	else if (value == "2")
8073	objcABIVersion = 2;
8074	else if (value == "3")
8075	objcABIVersion = 3;
8076	else
8077	getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
8078	} else {
8079	// Otherwise, determine if we are using the non-fragile ABI.
8080	bool nonFragileABIIsDefault =
8081	(rewriteKind == RK_NonFragile ||
8082	(rewriteKind == RK_None &&
8083	getToolChain().IsObjCNonFragileABIDefault()));
8084	if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
8085	options::OPT_fno_objc_nonfragile_abi,
8086	nonFragileABIIsDefault)) {
8087	// Determine the non-fragile ABI version to use.
8088	#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
8089	unsigned nonFragileABIVersion = 1;
8090	#else
8091	unsigned nonFragileABIVersion = 2;
8092	#endif
8093
8094	if (Arg *abiArg =
8095	args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
8096	StringRef value = abiArg->getValue();
8097	if (value == "1")
8098	nonFragileABIVersion = 1;
8099	else if (value == "2")
8100	nonFragileABIVersion = 2;
8101	else
8102	getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
8103	<< value;
8104	}
8105
8106	objcABIVersion = 1 + nonFragileABIVersion;
8107	} else {
8108	objcABIVersion = 1;
8109	}
8110	}
8111
8112	// We don't actually care about the ABI version other than whether
8113	// it's non-fragile.
8114	bool isNonFragile = objcABIVersion != 1;
8115
8116	// If we have no runtime argument, ask the toolchain for its default runtime.
8117	// However, the rewriter only really supports the Mac runtime, so assume that.
8118	ObjCRuntime runtime;
8119	if (!runtimeArg) {
8120	switch (rewriteKind) {
8121	case RK_None:
8122	runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
8123	break;
8124	case RK_Fragile:
8125	runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
8126	break;
8127	case RK_NonFragile:
8128	runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
8129	break;
8130	}
8131
8132	// -fnext-runtime
8133	} else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
8134	// On Darwin, make this use the default behavior for the toolchain.
8135	if (getToolChain().getTriple().isOSDarwin()) {
8136	runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
8137
8138	// Otherwise, build for a generic macosx port.
8139	} else {
8140	runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
8141	}
8142
8143	// -fgnu-runtime
8144	} else {
8145	assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
8146	// Legacy behaviour is to target the gnustep runtime if we are in
8147	// non-fragile mode or the GCC runtime in fragile mode.
8148	if (isNonFragile)
8149	runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));
8150	else
8151	runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
8152	}
8153
8154	if (llvm::any_of(Range: inputs, P: [](const InputInfo &input) {
8155	return types::isObjC(Id: input.getType());
8156	}))
8157	cmdArgs.push_back(
8158	Elt: args.MakeArgString(Str: "-fobjc-runtime=" + runtime.getAsString()));
8159	return runtime;
8160	}
8161
8162	static bool maybeConsumeDash(const std::string &EH, size_t &I) {
8163	bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
8164	I += HaveDash;
8165	return !HaveDash;
8166	}
8167
8168	namespace {
8169	struct EHFlags {
8170	bool Synch = false;
8171	bool Asynch = false;
8172	bool NoUnwindC = false;
8173	};
8174	} // end anonymous namespace
8175
8176	/// /EH controls whether to run destructor cleanups when exceptions are
8177	/// thrown. There are three modifiers:
8178	/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
8179	/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
8180	/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
8181	/// - c: Assume that extern "C" functions are implicitly nounwind.
8182	/// The default is /EHs-c-, meaning cleanups are disabled.
8183	static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args,
8184	bool isWindowsMSVC) {
8185	EHFlags EH;
8186
8187	std::vector<std::string> EHArgs =
8188	Args.getAllArgValues(options::OPT__SLASH_EH);
8189	for (const auto &EHVal : EHArgs) {
8190	for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
8191	switch (EHVal[I]) {
8192	case 'a':
8193	EH.Asynch = maybeConsumeDash(EH: EHVal, I);
8194	if (EH.Asynch) {
8195	// Async exceptions are Windows MSVC only.
8196	if (!isWindowsMSVC) {
8197	EH.Asynch = false;
8198	D.Diag(clang::diag::warn_drv_unused_argument) << "/EHa" << EHVal;
8199	continue;
8200	}
8201	EH.Synch = false;
8202	}
8203	continue;
8204	case 'c':
8205	EH.NoUnwindC = maybeConsumeDash(EH: EHVal, I);
8206	continue;
8207	case 's':
8208	EH.Synch = maybeConsumeDash(EH: EHVal, I);
8209	if (EH.Synch)
8210	EH.Asynch = false;
8211	continue;
8212	default:
8213	break;
8214	}
8215	D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
8216	break;
8217	}
8218	}
8219	// The /GX, /GX- flags are only processed if there are not /EH flags.
8220	// The default is that /GX is not specified.
8221	if (EHArgs.empty() &&
8222	Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
8223	/*Default=*/false)) {
8224	EH.Synch = true;
8225	EH.NoUnwindC = true;
8226	}
8227
8228	if (Args.hasArg(options::OPT__SLASH_kernel)) {
8229	EH.Synch = false;
8230	EH.NoUnwindC = false;
8231	EH.Asynch = false;
8232	}
8233
8234	return EH;
8235	}
8236
8237	void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
8238	ArgStringList &CmdArgs) const {
8239	bool isNVPTX = getToolChain().getTriple().isNVPTX();
8240
8241	ProcessVSRuntimeLibrary(TC: getToolChain(), Args, CmdArgs);
8242
8243	if (Arg *ShowIncludes =
8244	Args.getLastArg(options::OPT__SLASH_showIncludes,
8245	options::OPT__SLASH_showIncludes_user)) {
8246	CmdArgs.push_back(Elt: "--show-includes");
8247	if (ShowIncludes->getOption().matches(options::OPT__SLASH_showIncludes))
8248	CmdArgs.push_back(Elt: "-sys-header-deps");
8249	}
8250
8251	// This controls whether or not we emit RTTI data for polymorphic types.
8252	if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
8253	/*Default=*/false))
8254	CmdArgs.push_back(Elt: "-fno-rtti-data");
8255
8256	// This controls whether or not we emit stack-protector instrumentation.
8257	// In MSVC, Buffer Security Check (/GS) is on by default.
8258	if (!isNVPTX && Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
8259	/*Default=*/true)) {
8260	CmdArgs.push_back(Elt: "-stack-protector");
8261	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(LangOptions::SSPStrong)));
8262	}
8263
8264	const Driver &D = getToolChain().getDriver();
8265
8266	bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment();
8267	EHFlags EH = parseClangCLEHFlags(D, Args, isWindowsMSVC: IsWindowsMSVC);
8268	if (!isNVPTX && (EH.Synch || EH.Asynch)) {
8269	if (types::isCXX(Id: InputType))
8270	CmdArgs.push_back(Elt: "-fcxx-exceptions");
8271	CmdArgs.push_back(Elt: "-fexceptions");
8272	if (EH.Asynch)
8273	CmdArgs.push_back(Elt: "-fasync-exceptions");
8274	}
8275	if (types::isCXX(Id: InputType) && EH.Synch && EH.NoUnwindC)
8276	CmdArgs.push_back(Elt: "-fexternc-nounwind");
8277
8278	// /EP should expand to -E -P.
8279	if (Args.hasArg(options::OPT__SLASH_EP)) {
8280	CmdArgs.push_back(Elt: "-E");
8281	CmdArgs.push_back(Elt: "-P");
8282	}
8283
8284	if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,
8285	options::OPT__SLASH_Zc_dllexportInlines,
8286	false)) {
8287	CmdArgs.push_back(Elt: "-fno-dllexport-inlines");
8288	}
8289
8290	if (Args.hasFlag(options::OPT__SLASH_Zc_wchar_t_,
8291	options::OPT__SLASH_Zc_wchar_t, false)) {
8292	CmdArgs.push_back(Elt: "-fno-wchar");
8293	}
8294
8295	if (Args.hasArg(options::OPT__SLASH_kernel)) {
8296	llvm::Triple::ArchType Arch = getToolChain().getArch();
8297	std::vector<std::string> Values =
8298	Args.getAllArgValues(options::OPT__SLASH_arch);
8299	if (!Values.empty()) {
8300	llvm::SmallSet<std::string, 4> SupportedArches;
8301	if (Arch == llvm::Triple::x86)
8302	SupportedArches.insert(V: "IA32");
8303
8304	for (auto &V : Values)
8305	if (!SupportedArches.contains(V))
8306	D.Diag(diag::err_drv_argument_not_allowed_with)
8307	<< std::string("/arch:").append(V) << "/kernel";
8308	}
8309
8310	CmdArgs.push_back(Elt: "-fno-rtti");
8311	if (Args.hasFlag(options::OPT__SLASH_GR, options::OPT__SLASH_GR_, false))
8312	D.Diag(diag::err_drv_argument_not_allowed_with) << "/GR"
8313	<< "/kernel";
8314	}
8315
8316	Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
8317	Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
8318	if (MostGeneralArg && BestCaseArg)
8319	D.Diag(clang::diag::err_drv_argument_not_allowed_with)
8320	<< MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
8321
8322	if (MostGeneralArg) {
8323	Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
8324	Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
8325	Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
8326
8327	Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
8328	Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
8329	if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
8330	D.Diag(clang::diag::err_drv_argument_not_allowed_with)
8331	<< FirstConflict->getAsString(Args)
8332	<< SecondConflict->getAsString(Args);
8333
8334	if (SingleArg)
8335	CmdArgs.push_back(Elt: "-fms-memptr-rep=single");
8336	else if (MultipleArg)
8337	CmdArgs.push_back(Elt: "-fms-memptr-rep=multiple");
8338	else
8339	CmdArgs.push_back(Elt: "-fms-memptr-rep=virtual");
8340	}
8341
8342	if (Args.hasArg(options::OPT_regcall4))
8343	CmdArgs.push_back(Elt: "-regcall4");
8344
8345	// Parse the default calling convention options.
8346	if (Arg *CCArg =
8347	Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,
8348	options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,
8349	options::OPT__SLASH_Gregcall)) {
8350	unsigned DCCOptId = CCArg->getOption().getID();
8351	const char *DCCFlag = nullptr;
8352	bool ArchSupported = !isNVPTX;
8353	llvm::Triple::ArchType Arch = getToolChain().getArch();
8354	switch (DCCOptId) {
8355	case options::OPT__SLASH_Gd:
8356	DCCFlag = "-fdefault-calling-conv=cdecl";
8357	break;
8358	case options::OPT__SLASH_Gr:
8359	ArchSupported = Arch == llvm::Triple::x86;
8360	DCCFlag = "-fdefault-calling-conv=fastcall";
8361	break;
8362	case options::OPT__SLASH_Gz:
8363	ArchSupported = Arch == llvm::Triple::x86;
8364	DCCFlag = "-fdefault-calling-conv=stdcall";
8365	break;
8366	case options::OPT__SLASH_Gv:
8367	ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
8368	DCCFlag = "-fdefault-calling-conv=vectorcall";
8369	break;
8370	case options::OPT__SLASH_Gregcall:
8371	ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;
8372	DCCFlag = "-fdefault-calling-conv=regcall";
8373	break;
8374	}
8375
8376	// MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.
8377	if (ArchSupported && DCCFlag)
8378	CmdArgs.push_back(Elt: DCCFlag);
8379	}
8380
8381	if (Args.hasArg(options::OPT__SLASH_Gregcall4))
8382	CmdArgs.push_back(Elt: "-regcall4");
8383
8384	Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);
8385
8386	if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
8387	CmdArgs.push_back(Elt: "-fdiagnostics-format");
8388	CmdArgs.push_back(Elt: "msvc");
8389	}
8390
8391	if (Args.hasArg(options::OPT__SLASH_kernel))
8392	CmdArgs.push_back(Elt: "-fms-kernel");
8393
8394	// Unwind v2 (epilog) information for x64 Windows.
8395	if (Args.hasArg(options::OPT__SLASH_d2epilogunwind))
8396	CmdArgs.push_back(Elt: "-fwinx64-eh-unwindv2");
8397
8398	for (const Arg *A : Args.filtered(options::OPT__SLASH_guard)) {
8399	StringRef GuardArgs = A->getValue();
8400	// The only valid options are "cf", "cf,nochecks", "cf-", "ehcont" and
8401	// "ehcont-".
8402	if (GuardArgs.equals_insensitive("cf")) {
8403	// Emit CFG instrumentation and the table of address-taken functions.
8404	CmdArgs.push_back("-cfguard");
8405	} else if (GuardArgs.equals_insensitive("cf,nochecks")) {
8406	// Emit only the table of address-taken functions.
8407	CmdArgs.push_back("-cfguard-no-checks");
8408	} else if (GuardArgs.equals_insensitive("ehcont")) {
8409	// Emit EH continuation table.
8410	CmdArgs.push_back("-ehcontguard");
8411	} else if (GuardArgs.equals_insensitive("cf-") ||
8412	GuardArgs.equals_insensitive("ehcont-")) {
8413	// Do nothing, but we might want to emit a security warning in future.
8414	} else {
8415	D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << GuardArgs;
8416	}
8417	A->claim();
8418	}
8419
8420	for (const auto &FuncOverride :
8421	Args.getAllArgValues(options::OPT__SLASH_funcoverride)) {
8422	CmdArgs.push_back(Args.MakeArgString(
8423	Twine("-loader-replaceable-function=") + FuncOverride));
8424	}
8425	}
8426
8427	const char *Clang::getBaseInputName(const ArgList &Args,
8428	const InputInfo &Input) {
8429	return Args.MakeArgString(Str: llvm::sys::path::filename(path: Input.getBaseInput()));
8430	}
8431
8432	const char *Clang::getBaseInputStem(const ArgList &Args,
8433	const InputInfoList &Inputs) {
8434	const char *Str = getBaseInputName(Args, Input: Inputs[0]);
8435
8436	if (const char *End = strrchr(s: Str, c: '.'))
8437	return Args.MakeArgString(Str: std::string(Str, End));
8438
8439	return Str;
8440	}
8441
8442	const char *Clang::getDependencyFileName(const ArgList &Args,
8443	const InputInfoList &Inputs) {
8444	// FIXME: Think about this more.
8445
8446	if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
8447	SmallString<128> OutputFilename(OutputOpt->getValue());
8448	llvm::sys::path::replace_extension(path&: OutputFilename, extension: llvm::Twine('d'));
8449	return Args.MakeArgString(Str: OutputFilename);
8450	}
8451
8452	return Args.MakeArgString(Str: Twine(getBaseInputStem(Args, Inputs)) + ".d");
8453	}
8454
8455	// Begin ClangAs
8456
8457	void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
8458	ArgStringList &CmdArgs) const {
8459	StringRef CPUName;
8460	StringRef ABIName;
8461	const llvm::Triple &Triple = getToolChain().getTriple();
8462	mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
8463
8464	CmdArgs.push_back(Elt: "-target-abi");
8465	CmdArgs.push_back(Elt: ABIName.data());
8466	}
8467
8468	void ClangAs::AddX86TargetArgs(const ArgList &Args,
8469	ArgStringList &CmdArgs) const {
8470	addX86AlignBranchArgs(D: getToolChain().getDriver(), Args, CmdArgs,
8471	/*IsLTO=*/false);
8472
8473	if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
8474	StringRef Value = A->getValue();
8475	if (Value == "intel" || Value == "att") {
8476	CmdArgs.push_back(Elt: "-mllvm");
8477	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-x86-asm-syntax=" + Value));
8478	} else {
8479	getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
8480	<< A->getSpelling() << Value;
8481	}
8482	}
8483	}
8484
8485	void ClangAs::AddLoongArchTargetArgs(const ArgList &Args,
8486	ArgStringList &CmdArgs) const {
8487	CmdArgs.push_back(Elt: "-target-abi");
8488	CmdArgs.push_back(Elt: loongarch::getLoongArchABI(D: getToolChain().getDriver(), Args,
8489	Triple: getToolChain().getTriple())
8490	.data());
8491	}
8492
8493	void ClangAs::AddRISCVTargetArgs(const ArgList &Args,
8494	ArgStringList &CmdArgs) const {
8495	const llvm::Triple &Triple = getToolChain().getTriple();
8496	StringRef ABIName = riscv::getRISCVABI(Args, Triple);
8497
8498	CmdArgs.push_back(Elt: "-target-abi");
8499	CmdArgs.push_back(Elt: ABIName.data());
8500
8501	if (Args.hasFlag(options::OPT_mdefault_build_attributes,
8502	options::OPT_mno_default_build_attributes, true)) {
8503	CmdArgs.push_back(Elt: "-mllvm");
8504	CmdArgs.push_back(Elt: "-riscv-add-build-attributes");
8505	}
8506	}
8507
8508	void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
8509	const InputInfo &Output, const InputInfoList &Inputs,
8510	const ArgList &Args,
8511	const char *LinkingOutput) const {
8512	ArgStringList CmdArgs;
8513
8514	assert(Inputs.size() == 1 && "Unexpected number of inputs.");
8515	const InputInfo &Input = Inputs[0];
8516
8517	const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
8518	const std::string &TripleStr = Triple.getTriple();
8519	const auto &D = getToolChain().getDriver();
8520
8521	// Don't warn about "clang -w -c foo.s"
8522	Args.ClaimAllArgs(options::OPT_w);
8523	// and "clang -emit-llvm -c foo.s"
8524	Args.ClaimAllArgs(options::OPT_emit_llvm);
8525
8526	claimNoWarnArgs(Args);
8527
8528	// Invoke ourselves in -cc1as mode.
8529	//
8530	// FIXME: Implement custom jobs for internal actions.
8531	CmdArgs.push_back(Elt: "-cc1as");
8532
8533	// Add the "effective" target triple.
8534	CmdArgs.push_back(Elt: "-triple");
8535	CmdArgs.push_back(Elt: Args.MakeArgString(Str: TripleStr));
8536
8537	getToolChain().addClangCC1ASTargetOptions(Args, CC1ASArgs&: CmdArgs);
8538
8539	// Set the output mode, we currently only expect to be used as a real
8540	// assembler.
8541	CmdArgs.push_back(Elt: "-filetype");
8542	CmdArgs.push_back(Elt: "obj");
8543
8544	// Set the main file name, so that debug info works even with
8545	// -save-temps or preprocessed assembly.
8546	CmdArgs.push_back(Elt: "-main-file-name");
8547	CmdArgs.push_back(Elt: Clang::getBaseInputName(Args, Input));
8548
8549	// Add the target cpu
8550	std::string CPU = getCPUName(D, Args, T: Triple, /*FromAs*/ true);
8551	if (!CPU.empty()) {
8552	CmdArgs.push_back(Elt: "-target-cpu");
8553	CmdArgs.push_back(Elt: Args.MakeArgString(Str: CPU));
8554	}
8555
8556	// Add the target features
8557	getTargetFeatures(D, Triple, Args, CmdArgs, ForAS: true);
8558
8559	// Ignore explicit -force_cpusubtype_ALL option.
8560	(void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
8561
8562	// Pass along any -I options so we get proper .include search paths.
8563	Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
8564
8565	// Pass along any --embed-dir or similar options so we get proper embed paths.
8566	Args.AddAllArgs(CmdArgs, options::OPT_embed_dir_EQ);
8567
8568	// Determine the original source input.
8569	auto FindSource = [](const Action *S) -> const Action * {
8570	while (S->getKind() != Action::InputClass) {
8571	assert(!S->getInputs().empty() && "unexpected root action!");
8572	S = S->getInputs()[0];
8573	}
8574	return S;
8575	};
8576	const Action *SourceAction = FindSource(&JA);
8577
8578	// Forward -g and handle debug info related flags, assuming we are dealing
8579	// with an actual assembly file.
8580	bool WantDebug = false;
8581	Args.ClaimAllArgs(options::OPT_g_Group);
8582	if (Arg *A = Args.getLastArg(options::OPT_g_Group))
8583	WantDebug = !A->getOption().matches(options::OPT_g0) &&
8584	!A->getOption().matches(options::OPT_ggdb0);
8585
8586	// If a -gdwarf argument appeared, remember it.
8587	bool EmitDwarf = false;
8588	if (const Arg *A = getDwarfNArg(Args))
8589	EmitDwarf = checkDebugInfoOption(A, Args, D, TC: getToolChain());
8590
8591	bool EmitCodeView = false;
8592	if (const Arg *A = Args.getLastArg(options::OPT_gcodeview))
8593	EmitCodeView = checkDebugInfoOption(A, Args, D, TC: getToolChain());
8594
8595	// If the user asked for debug info but did not explicitly specify -gcodeview
8596	// or -gdwarf, ask the toolchain for the default format.
8597	if (!EmitCodeView && !EmitDwarf && WantDebug) {
8598	switch (getToolChain().getDefaultDebugFormat()) {
8599	case llvm::codegenoptions::DIF_CodeView:
8600	EmitCodeView = true;
8601	break;
8602	case llvm::codegenoptions::DIF_DWARF:
8603	EmitDwarf = true;
8604	break;
8605	}
8606	}
8607
8608	// If the arguments don't imply DWARF, don't emit any debug info here.
8609	if (!EmitDwarf)
8610	WantDebug = false;
8611
8612	llvm::codegenoptions::DebugInfoKind DebugInfoKind =
8613	llvm::codegenoptions::NoDebugInfo;
8614
8615	// Add the -fdebug-compilation-dir flag if needed.
8616	const char *DebugCompilationDir =
8617	addDebugCompDirArg(Args, CmdArgs, VFS: C.getDriver().getVFS());
8618
8619	if (SourceAction->getType() == types::TY_Asm ||
8620	SourceAction->getType() == types::TY_PP_Asm) {
8621	// You might think that it would be ok to set DebugInfoKind outside of
8622	// the guard for source type, however there is a test which asserts
8623	// that some assembler invocation receives no -debug-info-kind,
8624	// and it's not clear whether that test is just overly restrictive.
8625	DebugInfoKind = (WantDebug ? llvm::codegenoptions::DebugInfoConstructor
8626	: llvm::codegenoptions::NoDebugInfo);
8627
8628	addDebugPrefixMapArg(D: getToolChain().getDriver(), TC: getToolChain(), Args,
8629	CmdArgs);
8630
8631	// Set the AT_producer to the clang version when using the integrated
8632	// assembler on assembly source files.
8633	CmdArgs.push_back(Elt: "-dwarf-debug-producer");
8634	CmdArgs.push_back(Elt: Args.MakeArgString(Str: getClangFullVersion()));
8635
8636	// And pass along -I options
8637	Args.AddAllArgs(CmdArgs, options::OPT_I);
8638	}
8639	const unsigned DwarfVersion = getDwarfVersion(TC: getToolChain(), Args);
8640	RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
8641	DebuggerTuning: llvm::DebuggerKind::Default);
8642	renderDwarfFormat(D, T: Triple, Args, CmdArgs, DwarfVersion);
8643	RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC: getToolChain());
8644
8645	// Handle -fPIC et al -- the relocation-model affects the assembler
8646	// for some targets.
8647	llvm::Reloc::Model RelocationModel;
8648	unsigned PICLevel;
8649	bool IsPIE;
8650	std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
8651	ParsePICArgs(ToolChain: getToolChain(), Args);
8652
8653	const char *RMName = RelocationModelName(Model: RelocationModel);
8654	if (RMName) {
8655	CmdArgs.push_back(Elt: "-mrelocation-model");
8656	CmdArgs.push_back(Elt: RMName);
8657	}
8658
8659	// Optionally embed the -cc1as level arguments into the debug info, for build
8660	// analysis.
8661	if (getToolChain().UseDwarfDebugFlags()) {
8662	ArgStringList OriginalArgs;
8663	for (const auto &Arg : Args)
8664	Arg->render(Args, Output&: OriginalArgs);
8665
8666	SmallString<256> Flags;
8667	const char *Exec = getToolChain().getDriver().getClangProgramPath();
8668	escapeSpacesAndBackslashes(Arg: Exec, Res&: Flags);
8669	for (const char *OriginalArg : OriginalArgs) {
8670	SmallString<128> EscapedArg;
8671	escapeSpacesAndBackslashes(Arg: OriginalArg, Res&: EscapedArg);
8672	Flags += " ";
8673	Flags += EscapedArg;
8674	}
8675	CmdArgs.push_back(Elt: "-dwarf-debug-flags");
8676	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Flags));
8677	}
8678
8679	// FIXME: Add -static support, once we have it.
8680
8681	// Add target specific flags.
8682	switch (getToolChain().getArch()) {
8683	default:
8684	break;
8685
8686	case llvm::Triple::mips:
8687	case llvm::Triple::mipsel:
8688	case llvm::Triple::mips64:
8689	case llvm::Triple::mips64el:
8690	AddMIPSTargetArgs(Args, CmdArgs);
8691	break;
8692
8693	case llvm::Triple::x86:
8694	case llvm::Triple::x86_64:
8695	AddX86TargetArgs(Args, CmdArgs);
8696	break;
8697
8698	case llvm::Triple::arm:
8699	case llvm::Triple::armeb:
8700	case llvm::Triple::thumb:
8701	case llvm::Triple::thumbeb:
8702	// This isn't in AddARMTargetArgs because we want to do this for assembly
8703	// only, not C/C++.
8704	if (Args.hasFlag(options::OPT_mdefault_build_attributes,
8705	options::OPT_mno_default_build_attributes, true)) {
8706	CmdArgs.push_back(Elt: "-mllvm");
8707	CmdArgs.push_back(Elt: "-arm-add-build-attributes");
8708	}
8709	break;
8710
8711	case llvm::Triple::aarch64:
8712	case llvm::Triple::aarch64_32:
8713	case llvm::Triple::aarch64_be:
8714	if (Args.hasArg(options::OPT_mmark_bti_property)) {
8715	CmdArgs.push_back(Elt: "-mllvm");
8716	CmdArgs.push_back(Elt: "-aarch64-mark-bti-property");
8717	}
8718	break;
8719
8720	case llvm::Triple::loongarch32:
8721	case llvm::Triple::loongarch64:
8722	AddLoongArchTargetArgs(Args, CmdArgs);
8723	break;
8724
8725	case llvm::Triple::riscv32:
8726	case llvm::Triple::riscv64:
8727	AddRISCVTargetArgs(Args, CmdArgs);
8728	break;
8729
8730	case llvm::Triple::hexagon:
8731	if (Args.hasFlag(options::OPT_mdefault_build_attributes,
8732	options::OPT_mno_default_build_attributes, true)) {
8733	CmdArgs.push_back(Elt: "-mllvm");
8734	CmdArgs.push_back(Elt: "-hexagon-add-build-attributes");
8735	}
8736	break;
8737	}
8738
8739	// Consume all the warning flags. Usually this would be handled more
8740	// gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
8741	// doesn't handle that so rather than warning about unused flags that are
8742	// actually used, we'll lie by omission instead.
8743	// FIXME: Stop lying and consume only the appropriate driver flags
8744	Args.ClaimAllArgs(options::OPT_W_Group);
8745
8746	CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
8747	D: getToolChain().getDriver());
8748
8749	// Forward -Xclangas arguments to -cc1as
8750	for (auto Arg : Args.filtered(options::OPT_Xclangas)) {
8751	Arg->claim();
8752	CmdArgs.push_back(Arg->getValue());
8753	}
8754
8755	Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
8756
8757	if (DebugInfoKind > llvm::codegenoptions::NoDebugInfo && Output.isFilename())
8758	addDebugObjectName(Args, CmdArgs, DebugCompilationDir,
8759	OutputFileName: Output.getFilename());
8760
8761	// Fixup any previous commands that use -object-file-name because when we
8762	// generated them, the final .obj name wasn't yet known.
8763	for (Command &J : C.getJobs()) {
8764	if (SourceAction != FindSource(&J.getSource()))
8765	continue;
8766	auto &JArgs = J.getArguments();
8767	for (unsigned I = 0; I < JArgs.size(); ++I) {
8768	if (StringRef(JArgs[I]).starts_with(Prefix: "-object-file-name=") &&
8769	Output.isFilename()) {
8770	ArgStringList NewArgs(JArgs.begin(), JArgs.begin() + I);
8771	addDebugObjectName(Args, CmdArgs&: NewArgs, DebugCompilationDir,
8772	OutputFileName: Output.getFilename());
8773	NewArgs.append(in_start: JArgs.begin() + I + 1, in_end: JArgs.end());
8774	J.replaceArguments(List: NewArgs);
8775	break;
8776	}
8777	}
8778	}
8779
8780	assert(Output.isFilename() && "Unexpected lipo output.");
8781	CmdArgs.push_back(Elt: "-o");
8782	CmdArgs.push_back(Elt: Output.getFilename());
8783
8784	const llvm::Triple &T = getToolChain().getTriple();
8785	Arg *A;
8786	if (getDebugFissionKind(D, Args, Arg&: A) == DwarfFissionKind::Split &&
8787	T.isOSBinFormatELF()) {
8788	CmdArgs.push_back(Elt: "-split-dwarf-output");
8789	CmdArgs.push_back(Elt: SplitDebugName(JA, Args, Input, Output));
8790	}
8791
8792	if (Triple.isAMDGPU())
8793	handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs, /*IsCC1As=*/true);
8794
8795	assert(Input.isFilename() && "Invalid input.");
8796	CmdArgs.push_back(Elt: Input.getFilename());
8797
8798	const char *Exec = getToolChain().getDriver().getClangProgramPath();
8799	if (D.CC1Main && !D.CCGenDiagnostics) {
8800	// Invoke cc1as directly in this process.
8801	C.addCommand(C: std::make_unique<CC1Command>(
8802	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
8803	args: Output, args: D.getPrependArg()));
8804	} else {
8805	C.addCommand(C: std::make_unique<Command>(
8806	args: JA, args: *this, args: ResponseFileSupport::AtFileUTF8(), args&: Exec, args&: CmdArgs, args: Inputs,
8807	args: Output, args: D.getPrependArg()));
8808	}
8809	}
8810
8811	// Begin OffloadBundler
8812	void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,
8813	const InputInfo &Output,
8814	const InputInfoList &Inputs,
8815	const llvm::opt::ArgList &TCArgs,
8816	const char *LinkingOutput) const {
8817	// The version with only one output is expected to refer to a bundling job.
8818	assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");
8819
8820	// The bundling command looks like this:
8821	// clang-offload-bundler -type=bc
8822	// -targets=host-triple,openmp-triple1,openmp-triple2
8823	// -output=output_file
8824	// -input=unbundle_file_host
8825	// -input=unbundle_file_tgt1
8826	// -input=unbundle_file_tgt2
8827
8828	ArgStringList CmdArgs;
8829
8830	// Get the type.
8831	CmdArgs.push_back(Elt: TCArgs.MakeArgString(
8832	Str: Twine("-type=") + types::getTypeTempSuffix(Id: Output.getType())));
8833
8834	assert(JA.getInputs().size() == Inputs.size() &&
8835	"Not have inputs for all dependence actions??");
8836
8837	// Get the targets.
8838	SmallString<128> Triples;
8839	Triples += "-targets=";
8840	for (unsigned I = 0; I < Inputs.size(); ++I) {
8841	if (I)
8842	Triples += ',';
8843
8844	// Find ToolChain for this input.
8845	Action::OffloadKind CurKind = Action::OFK_Host;
8846	const ToolChain *CurTC = &getToolChain();
8847	const Action *CurDep = JA.getInputs()[I];
8848
8849	if (const auto *OA = dyn_cast<OffloadAction>(Val: CurDep)) {
8850	CurTC = nullptr;
8851	OA->doOnEachDependence(Work: [&](Action *A, const ToolChain *TC, const char *) {
8852	assert(CurTC == nullptr && "Expected one dependence!");
8853	CurKind = A->getOffloadingDeviceKind();
8854	CurTC = TC;
8855	});
8856	}
8857	Triples += Action::GetOffloadKindName(Kind: CurKind);
8858	Triples += '-';
8859	Triples +=
8860	CurTC->getTriple().normalize(Form: llvm::Triple::CanonicalForm::FOUR_IDENT);
8861	if ((CurKind == Action::OFK_HIP || CurKind == Action::OFK_Cuda) &&
8862	!StringRef(CurDep->getOffloadingArch()).empty()) {
8863	Triples += '-';
8864	Triples += CurDep->getOffloadingArch();
8865	}
8866
8867	// TODO: Replace parsing of -march flag. Can be done by storing GPUArch
8868	// with each toolchain.
8869	StringRef GPUArchName;
8870	if (CurKind == Action::OFK_OpenMP) {
8871	// Extract GPUArch from -march argument in TC argument list.
8872	for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {
8873	auto ArchStr = StringRef(TCArgs.getArgString(Index: ArgIndex));
8874	auto Arch = ArchStr.starts_with_insensitive(Prefix: "-march=");
8875	if (Arch) {
8876	GPUArchName = ArchStr.substr(Start: 7);
8877	Triples += "-";
8878	break;
8879	}
8880	}
8881	Triples += GPUArchName.str();
8882	}
8883	}
8884	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: Triples));
8885
8886	// Get bundled file command.
8887	CmdArgs.push_back(
8888	Elt: TCArgs.MakeArgString(Str: Twine("-output=") + Output.getFilename()));
8889
8890	// Get unbundled files command.
8891	for (unsigned I = 0; I < Inputs.size(); ++I) {
8892	SmallString<128> UB;
8893	UB += "-input=";
8894
8895	// Find ToolChain for this input.
8896	const ToolChain *CurTC = &getToolChain();
8897	if (const auto *OA = dyn_cast<OffloadAction>(Val: JA.getInputs()[I])) {
8898	CurTC = nullptr;
8899	OA->doOnEachDependence(Work: [&](Action *, const ToolChain *TC, const char *) {
8900	assert(CurTC == nullptr && "Expected one dependence!");
8901	CurTC = TC;
8902	});
8903	UB += C.addTempFile(
8904	Name: C.getArgs().MakeArgString(Str: CurTC->getInputFilename(Input: Inputs[I])));
8905	} else {
8906	UB += CurTC->getInputFilename(Input: Inputs[I]);
8907	}
8908	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: UB));
8909	}
8910	addOffloadCompressArgs(TCArgs, CmdArgs);
8911	// All the inputs are encoded as commands.
8912	C.addCommand(C: std::make_unique<Command>(
8913	args: JA, args: *this, args: ResponseFileSupport::None(),
8914	args: TCArgs.MakeArgString(Str: getToolChain().GetProgramPath(Name: getShortName())),
8915	args&: CmdArgs, args: std::nullopt, args: Output));
8916	}
8917
8918	void OffloadBundler::ConstructJobMultipleOutputs(
8919	Compilation &C, const JobAction &JA, const InputInfoList &Outputs,
8920	const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,
8921	const char *LinkingOutput) const {
8922	// The version with multiple outputs is expected to refer to a unbundling job.
8923	auto &UA = cast<OffloadUnbundlingJobAction>(Val: JA);
8924
8925	// The unbundling command looks like this:
8926	// clang-offload-bundler -type=bc
8927	// -targets=host-triple,openmp-triple1,openmp-triple2
8928	// -input=input_file
8929	// -output=unbundle_file_host
8930	// -output=unbundle_file_tgt1
8931	// -output=unbundle_file_tgt2
8932	// -unbundle
8933
8934	ArgStringList CmdArgs;
8935
8936	assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");
8937	InputInfo Input = Inputs.front();
8938
8939	// Get the type.
8940	CmdArgs.push_back(Elt: TCArgs.MakeArgString(
8941	Str: Twine("-type=") + types::getTypeTempSuffix(Id: Input.getType())));
8942
8943	// Get the targets.
8944	SmallString<128> Triples;
8945	Triples += "-targets=";
8946	auto DepInfo = UA.getDependentActionsInfo();
8947	for (unsigned I = 0; I < DepInfo.size(); ++I) {
8948	if (I)
8949	Triples += ',';
8950
8951	auto &Dep = DepInfo[I];
8952	Triples += Action::GetOffloadKindName(Kind: Dep.DependentOffloadKind);
8953	Triples += '-';
8954	Triples += Dep.DependentToolChain->getTriple().normalize(
8955	Form: llvm::Triple::CanonicalForm::FOUR_IDENT);
8956	if ((Dep.DependentOffloadKind == Action::OFK_HIP ||
8957	Dep.DependentOffloadKind == Action::OFK_Cuda) &&
8958	!Dep.DependentBoundArch.empty()) {
8959	Triples += '-';
8960	Triples += Dep.DependentBoundArch;
8961	}
8962	// TODO: Replace parsing of -march flag. Can be done by storing GPUArch
8963	// with each toolchain.
8964	StringRef GPUArchName;
8965	if (Dep.DependentOffloadKind == Action::OFK_OpenMP) {
8966	// Extract GPUArch from -march argument in TC argument list.
8967	for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {
8968	StringRef ArchStr = StringRef(TCArgs.getArgString(Index: ArgIndex));
8969	auto Arch = ArchStr.starts_with_insensitive(Prefix: "-march=");
8970	if (Arch) {
8971	GPUArchName = ArchStr.substr(Start: 7);
8972	Triples += "-";
8973	break;
8974	}
8975	}
8976	Triples += GPUArchName.str();
8977	}
8978	}
8979
8980	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: Triples));
8981
8982	// Get bundled file command.
8983	CmdArgs.push_back(
8984	Elt: TCArgs.MakeArgString(Str: Twine("-input=") + Input.getFilename()));
8985
8986	// Get unbundled files command.
8987	for (unsigned I = 0; I < Outputs.size(); ++I) {
8988	SmallString<128> UB;
8989	UB += "-output=";
8990	UB += DepInfo[I].DependentToolChain->getInputFilename(Input: Outputs[I]);
8991	CmdArgs.push_back(Elt: TCArgs.MakeArgString(Str: UB));
8992	}
8993	CmdArgs.push_back(Elt: "-unbundle");
8994	CmdArgs.push_back(Elt: "-allow-missing-bundles");
8995	if (TCArgs.hasArg(options::OPT_v))
8996	CmdArgs.push_back(Elt: "-verbose");
8997
8998	// All the inputs are encoded as commands.
8999	C.addCommand(C: std::make_unique<Command>(
9000	args: JA, args: *this, args: ResponseFileSupport::None(),
9001	args: TCArgs.MakeArgString(Str: getToolChain().GetProgramPath(Name: getShortName())),
9002	args&: CmdArgs, args: std::nullopt, args: Outputs));
9003	}
9004
9005	void OffloadPackager::ConstructJob(Compilation &C, const JobAction &JA,
9006	const InputInfo &Output,
9007	const InputInfoList &Inputs,
9008	const llvm::opt::ArgList &Args,
9009	const char *LinkingOutput) const {
9010	ArgStringList CmdArgs;
9011
9012	// Add the output file name.
9013	assert(Output.isFilename() && "Invalid output.");
9014	CmdArgs.push_back(Elt: "-o");
9015	CmdArgs.push_back(Elt: Output.getFilename());
9016
9017	// Create the inputs to bundle the needed metadata.
9018	for (const InputInfo &Input : Inputs) {
9019	const Action *OffloadAction = Input.getAction();
9020	const ToolChain *TC = OffloadAction->getOffloadingToolChain();
9021	const ArgList &TCArgs =
9022	C.getArgsForToolChain(TC, BoundArch: OffloadAction->getOffloadingArch(),
9023	DeviceOffloadKind: OffloadAction->getOffloadingDeviceKind());
9024	StringRef File = C.getArgs().MakeArgString(Str: TC->getInputFilename(Input));
9025	StringRef Arch = OffloadAction->getOffloadingArch()
9026	? OffloadAction->getOffloadingArch()
9027	: TCArgs.getLastArgValue(options::OPT_march_EQ);
9028	StringRef Kind =
9029	Action::GetOffloadKindName(Kind: OffloadAction->getOffloadingDeviceKind());
9030
9031	ArgStringList Features;
9032	SmallVector<StringRef> FeatureArgs;
9033	getTargetFeatures(D: TC->getDriver(), Triple: TC->getTriple(), Args: TCArgs, CmdArgs&: Features,
9034	ForAS: false);
9035	llvm::copy_if(Range&: Features, Out: std::back_inserter(x&: FeatureArgs),
9036	P: [](StringRef Arg) { return !Arg.starts_with(Prefix: "-target"); });
9037
9038	// TODO: We need to pass in the full target-id and handle it properly in the
9039	// linker wrapper.
9040	SmallVector<std::string> Parts{
9041	"file=" + File.str(),
9042	"triple=" + TC->getTripleString(),
9043	"arch=" + (Arch.empty() ? "generic" : Arch.str()),
9044	"kind=" + Kind.str(),
9045	};
9046
9047	if (TC->getDriver().isUsingOffloadLTO())
9048	for (StringRef Feature : FeatureArgs)
9049	Parts.emplace_back(Args: "feature=" + Feature.str());
9050
9051	CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--image=" + llvm::join(R&: Parts, Separator: ",")));
9052	}
9053
9054	C.addCommand(C: std::make_unique<Command>(
9055	args: JA, args: *this, args: ResponseFileSupport::None(),
9056	args: Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: getShortName())),
9057	args&: CmdArgs, args: Inputs, args: Output));
9058	}
9059
9060	void LinkerWrapper::ConstructJob(Compilation &C, const JobAction &JA,
9061	const InputInfo &Output,
9062	const InputInfoList &Inputs,
9063	const ArgList &Args,
9064	const char *LinkingOutput) const {
9065	using namespace options;
9066
9067	// A list of permitted options that will be forwarded to the embedded device
9068	// compilation job.
9069	const llvm::DenseSet<unsigned> CompilerOptions{
9070	OPT_v,
9071	OPT_cuda_path_EQ,
9072	OPT_rocm_path_EQ,
9073	OPT_O_Group,
9074	OPT_g_Group,
9075	OPT_g_flags_Group,
9076	OPT_R_value_Group,
9077	OPT_R_Group,
9078	OPT_Xcuda_ptxas,
9079	OPT_ftime_report,
9080	OPT_ftime_trace,
9081	OPT_ftime_trace_EQ,
9082	OPT_ftime_trace_granularity_EQ,
9083	OPT_ftime_trace_verbose,
9084	OPT_opt_record_file,
9085	OPT_opt_record_format,
9086	OPT_opt_record_passes,
9087	OPT_fsave_optimization_record,
9088	OPT_fsave_optimization_record_EQ,
9089	OPT_fno_save_optimization_record,
9090	OPT_foptimization_record_file_EQ,
9091	OPT_foptimization_record_passes_EQ,
9092	OPT_save_temps,
9093	OPT_save_temps_EQ,
9094	OPT_mcode_object_version_EQ,
9095	OPT_load,
9096	OPT_fno_lto,
9097	OPT_flto,
9098	OPT_flto_partitions_EQ,
9099	OPT_flto_EQ};
9100	const llvm::DenseSet<unsigned> LinkerOptions{OPT_mllvm, OPT_Zlinker_input};
9101	auto ShouldForward = [&](const llvm::DenseSet<unsigned> &Set, Arg *A) {
9102	return Set.contains(V: A->getOption().getID()) ||
9103	(A->getOption().getGroup().isValid() &&
9104	Set.contains(V: A->getOption().getGroup().getID()));
9105	};
9106
9107	ArgStringList CmdArgs;
9108	for (Action::OffloadKind Kind : {Action::OFK_Cuda, Action::OFK_OpenMP,
9109	Action::OFK_HIP, Action::OFK_SYCL}) {
9110	auto TCRange = C.getOffloadToolChains(Kind);
9111	for (auto &I : llvm::make_range(p: TCRange)) {
9112	const ToolChain *TC = I.second;
9113
9114	// We do not use a bound architecture here so options passed only to a
9115	// specific architecture via -Xarch_<cpu> will not be forwarded.
9116	ArgStringList CompilerArgs;
9117	ArgStringList LinkerArgs;
9118	for (Arg *A : C.getArgsForToolChain(TC, /*BoundArch=*/"", DeviceOffloadKind: Kind)) {
9119	if (A->getOption().matches(OPT_Zlinker_input))
9120	LinkerArgs.emplace_back(Args: A->getValue());
9121	else if (ShouldForward(CompilerOptions, A))
9122	A->render(Args, Output&: CompilerArgs);
9123	else if (ShouldForward(LinkerOptions, A))
9124	A->render(Args, Output&: LinkerArgs);
9125	}
9126
9127	// If this is OpenMP the device linker will need `-lompdevice`.
9128	if (Kind == Action::OFK_OpenMP && !Args.hasArg(OPT_no_offloadlib) &&
9129	(TC->getTriple().isAMDGPU() || TC->getTriple().isNVPTX()))
9130	LinkerArgs.emplace_back(Args: "-lompdevice");
9131
9132	// Forward all of these to the appropriate toolchain.
9133	for (StringRef Arg : CompilerArgs)
9134	CmdArgs.push_back(Elt: Args.MakeArgString(
9135	Str: "--device-compiler=" + TC->getTripleString() + "=" + Arg));
9136	for (StringRef Arg : LinkerArgs)
9137	CmdArgs.push_back(Elt: Args.MakeArgString(
9138	Str: "--device-linker=" + TC->getTripleString() + "=" + Arg));
9139
9140	// Forward the LTO mode relying on the Driver's parsing.
9141	if (C.getDriver().getOffloadLTOMode() == LTOK_Full)
9142	CmdArgs.push_back(Elt: Args.MakeArgString(
9143	Str: "--device-compiler=" + TC->getTripleString() + "=-flto=full"));
9144	else if (C.getDriver().getOffloadLTOMode() == LTOK_Thin) {
9145	CmdArgs.push_back(Elt: Args.MakeArgString(
9146	Str: "--device-compiler=" + TC->getTripleString() + "=-flto=thin"));
9147	if (TC->getTriple().isAMDGPU()) {
9148	CmdArgs.push_back(
9149	Elt: Args.MakeArgString(Str: "--device-linker=" + TC->getTripleString() +
9150	"=-plugin-opt=-force-import-all"));
9151	CmdArgs.push_back(
9152	Elt: Args.MakeArgString(Str: "--device-linker=" + TC->getTripleString() +
9153	"=-plugin-opt=-avail-extern-to-local"));
9154	if (Kind == Action::OFK_OpenMP) {
9155	CmdArgs.push_back(
9156	Elt: Args.MakeArgString(Str: "--device-linker=" + TC->getTripleString() +
9157	"=-plugin-opt=-amdgpu-internalize-symbols"));
9158	}
9159	}
9160	}
9161	}
9162	}
9163
9164	CmdArgs.push_back(
9165	Elt: Args.MakeArgString(Str: "--host-triple=" + getToolChain().getTripleString()));
9166	if (Args.hasArg(options::OPT_v))
9167	CmdArgs.push_back(Elt: "--wrapper-verbose");
9168	if (Arg *A = Args.getLastArg(options::OPT_cuda_path_EQ))
9169	CmdArgs.push_back(
9170	Elt: Args.MakeArgString(Str: Twine("--cuda-path=") + A->getValue()));
9171
9172	// Construct the link job so we can wrap around it.
9173	Linker->ConstructJob(C, JA, Output, Inputs, TCArgs: Args, LinkingOutput);
9174	const auto &LinkCommand = C.getJobs().getJobs().back();
9175
9176	// Forward -Xoffload-linker<-triple> arguments to the device link job.
9177	for (Arg *A : Args.filtered(options::OPT_Xoffload_linker)) {
9178	StringRef Val = A->getValue(0);
9179	if (Val.empty())
9180	CmdArgs.push_back(
9181	Args.MakeArgString(Twine("--device-linker=") + A->getValue(1)));
9182	else
9183	CmdArgs.push_back(Args.MakeArgString(
9184	"--device-linker=" +
9185	ToolChain::getOpenMPTriple(Val.drop_front()).getTriple() + "=" +
9186	A->getValue(1)));
9187	}
9188	Args.ClaimAllArgs(options::OPT_Xoffload_linker);
9189
9190	// Embed bitcode instead of an object in JIT mode.
9191	if (Args.hasFlag(options::OPT_fopenmp_target_jit,
9192	options::OPT_fno_openmp_target_jit, false))
9193	CmdArgs.push_back(Elt: "--embed-bitcode");
9194
9195	// Save temporary files created by the linker wrapper.
9196	if (Args.hasArg(options::OPT_save_temps_EQ) ||
9197	Args.hasArg(options::OPT_save_temps))
9198	CmdArgs.push_back(Elt: "--save-temps");
9199
9200	// Pass in the C library for GPUs if present and not disabled.
9201	if (Args.hasFlag(options::OPT_offloadlib, OPT_no_offloadlib, true) &&
9202	!Args.hasArg(options::OPT_nostdlib, options::OPT_r,
9203	options::OPT_nodefaultlibs, options::OPT_nolibc,
9204	options::OPT_nogpulibc)) {
9205	forAllAssociatedToolChains(C, JA, RegularToolChain: getToolChain(), Work: [&](const ToolChain &TC) {
9206	// The device C library is only available for NVPTX and AMDGPU targets
9207	// currently.
9208	if (!TC.getTriple().isNVPTX() && !TC.getTriple().isAMDGPU())
9209	return;
9210	bool HasLibC = TC.getStdlibIncludePath().has_value();
9211	if (HasLibC) {
9212	CmdArgs.push_back(Elt: Args.MakeArgString(
9213	Str: "--device-linker=" + TC.getTripleString() + "=" + "-lc"));
9214	CmdArgs.push_back(Elt: Args.MakeArgString(
9215	Str: "--device-linker=" + TC.getTripleString() + "=" + "-lm"));
9216	}
9217	auto HasCompilerRT = getToolChain().getVFS().exists(
9218	Path: TC.getCompilerRT(Args, Component: "builtins", Type: ToolChain::FT_Static));
9219	if (HasCompilerRT)
9220	CmdArgs.push_back(
9221	Elt: Args.MakeArgString(Str: "--device-linker=" + TC.getTripleString() + "=" +
9222	"-lclang_rt.builtins"));
9223	bool HasFlangRT = HasCompilerRT && C.getDriver().IsFlangMode();
9224	if (HasFlangRT)
9225	CmdArgs.push_back(
9226	Elt: Args.MakeArgString(Str: "--device-linker=" + TC.getTripleString() + "=" +
9227	"-lflang_rt.runtime"));
9228	});
9229	}
9230
9231	// Add the linker arguments to be forwarded by the wrapper.
9232	CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine("--linker-path=") +
9233	LinkCommand->getExecutable()));
9234	for (const char *LinkArg : LinkCommand->getArguments())
9235	CmdArgs.push_back(Elt: LinkArg);
9236
9237	addOffloadCompressArgs(TCArgs: Args, CmdArgs);
9238
9239	if (Arg *A = Args.getLastArg(options::OPT_offload_jobs_EQ)) {
9240	int NumThreads;
9241	if (StringRef(A->getValue()).getAsInteger(Radix: 10, Result&: NumThreads) ||
9242	NumThreads <= 0)
9243	C.getDriver().Diag(diag::err_drv_invalid_int_value)
9244	<< A->getAsString(Args) << A->getValue();
9245	else
9246	CmdArgs.push_back(
9247	Elt: Args.MakeArgString(Str: "--wrapper-jobs=" + Twine(NumThreads)));
9248	}
9249
9250	const char *Exec =
9251	Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: "clang-linker-wrapper"));
9252
9253	// Replace the executable and arguments of the link job with the
9254	// wrapper.
9255	LinkCommand->replaceExecutable(Exe: Exec);
9256	LinkCommand->replaceArguments(List: CmdArgs);
9257	}
9258