1/* Compilation switch flag type definitions for GCC.
2 Copyright (C) 1987-2023 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
20#ifndef GCC_FLAG_TYPES_H
21#define GCC_FLAG_TYPES_H
22
23#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)
24
25enum debug_info_type
26{
27 DINFO_TYPE_NONE, /* No debug info. */
28 DINFO_TYPE_DWARF2, /* Dwarf v2 debug info. */
29 DINFO_TYPE_VMS, /* VMS debug info. */
30 DINFO_TYPE_CTF, /* CTF debug info. */
31 DINFO_TYPE_BTF, /* BTF debug info. */
32 DINFO_TYPE_BTF_WITH_CORE, /* BTF debug info with CO-RE relocations. */
33 DINFO_TYPE_MAX = DINFO_TYPE_BTF_WITH_CORE /* Marker only. */
34};
35
36#define NO_DEBUG (0U)
37/* Write DWARF2 debug info (using dwarf2out.cc). */
38#define DWARF2_DEBUG (1U << DINFO_TYPE_DWARF2)
39/* Write VMS debug info (using vmsdbgout.cc). */
40#define VMS_DEBUG (1U << DINFO_TYPE_VMS)
41/* Write CTF debug info (using ctfout.cc). */
42#define CTF_DEBUG (1U << DINFO_TYPE_CTF)
43/* Write BTF debug info (using btfout.cc). */
44#define BTF_DEBUG (1U << DINFO_TYPE_BTF)
45/* Write BTF debug info for BPF CO-RE usecase (using btfout.cc). */
46#define BTF_WITH_CORE_DEBUG (1U << DINFO_TYPE_BTF_WITH_CORE)
47
48/* Note: Adding new definitions to handle -combination- of debug formats,
49 like VMS_AND_DWARF2_DEBUG is not recommended. This definition remains
50 here for historical reasons. */
51/* Write VMS debug info (using vmsdbgout.cc) and DWARF v2 debug info (using
52 dwarf2out.cc). */
53#define VMS_AND_DWARF2_DEBUG ((VMS_DEBUG | DWARF2_DEBUG))
54
55enum debug_info_levels
56{
57 DINFO_LEVEL_NONE, /* Write no debugging info. */
58 DINFO_LEVEL_TERSE, /* Write minimal info to support tracebacks only. */
59 DINFO_LEVEL_NORMAL, /* Write info for all declarations (and line table). */
60 DINFO_LEVEL_VERBOSE /* Write normal info plus #define/#undef info. */
61};
62
63/* CTF debug info levels.
64 CTF debug info levels are untied with DWARF debug info levels because CTF
65 may co-exist with DWARF. */
66enum ctf_debug_info_levels
67{
68 CTFINFO_LEVEL_NONE = 0, /* Write no CTF debug info. */
69 CTFINFO_LEVEL_TERSE = 1, /* Write CTF information to support tracebacks
70 only. Not Implemented. */
71 CTFINFO_LEVEL_NORMAL = 2 /* Write CTF type information for all entities
72 (functions, data objects, variables etc.)
73 at file-scope or global-scope only. */
74};
75
76/* A major contribution to object and executable size is debug
77 information size. A major contribution to debug information
78 size is struct descriptions replicated in several object files.
79 The following function determines whether or not debug information
80 should be generated for a given struct. The indirect parameter
81 indicates that the struct is being handled indirectly, via
82 a pointer. See opts.cc for the implementation. */
83
84enum debug_info_usage
85{
86 DINFO_USAGE_DFN, /* A struct definition. */
87 DINFO_USAGE_DIR_USE, /* A direct use, such as the type of a variable. */
88 DINFO_USAGE_IND_USE, /* An indirect use, such as through a pointer. */
89 DINFO_USAGE_NUM_ENUMS /* The number of enumerators. */
90};
91
92/* A major contribution to object and executable size is debug
93 information size. A major contribution to debug information size
94 is struct descriptions replicated in several object files. The
95 following flags attempt to reduce this information. The basic
96 idea is to not emit struct debugging information in the current
97 compilation unit when that information will be generated by
98 another compilation unit.
99
100 Debug information for a struct defined in the current source
101 file should be generated in the object file. Likewise the
102 debug information for a struct defined in a header should be
103 generated in the object file of the corresponding source file.
104 Both of these case are handled when the base name of the file of
105 the struct definition matches the base name of the source file
106 of the current compilation unit. This matching emits minimal
107 struct debugging information.
108
109 The base file name matching rule above will fail to emit debug
110 information for structs defined in system headers. So a second
111 category of files includes system headers in addition to files
112 with matching bases.
113
114 The remaining types of files are library headers and application
115 headers. We cannot currently distinguish these two types. */
116
117enum debug_struct_file
118{
119 DINFO_STRUCT_FILE_NONE, /* Debug no structs. */
120 DINFO_STRUCT_FILE_BASE, /* Debug structs defined in files with the
121 same base name as the compilation unit. */
122 DINFO_STRUCT_FILE_SYS, /* Also debug structs defined in system
123 header files. */
124 DINFO_STRUCT_FILE_ANY /* Debug structs defined in all files. */
125};
126
127/* Balance between GNAT encodings and standard DWARF to emit. */
128
129enum dwarf_gnat_encodings
130{
131 DWARF_GNAT_ENCODINGS_ALL = 0, /* Emit all GNAT encodings, then emit as
132 much standard DWARF as possible so it
133 does not conflict with GNAT
134 encodings. */
135 DWARF_GNAT_ENCODINGS_GDB = 1, /* Emit as much standard DWARF as possible
136 as long as GDB handles them. Emit GNAT
137 encodings for the rest. */
138 DWARF_GNAT_ENCODINGS_MINIMAL = 2 /* Emit all the standard DWARF we can.
139 Emit GNAT encodings for the rest. */
140};
141
142/* Enumerate Objective-c instance variable visibility settings. */
143
144enum ivar_visibility
145{
146 IVAR_VISIBILITY_PRIVATE,
147 IVAR_VISIBILITY_PROTECTED,
148 IVAR_VISIBILITY_PUBLIC,
149 IVAR_VISIBILITY_PACKAGE
150};
151
152/* The stack reuse level. */
153enum stack_reuse_level
154{
155 SR_NONE,
156 SR_NAMED_VARS,
157 SR_ALL
158};
159
160/* The live patching level. */
161enum live_patching_level
162{
163 LIVE_PATCHING_NONE = 0,
164 LIVE_PATCHING_INLINE_ONLY_STATIC,
165 LIVE_PATCHING_INLINE_CLONE
166};
167
168/* The algorithm used for basic block reordering. */
169enum reorder_blocks_algorithm
170{
171 REORDER_BLOCKS_ALGORITHM_SIMPLE,
172 REORDER_BLOCKS_ALGORITHM_STC
173};
174
175/* The algorithm used for the integrated register allocator (IRA). */
176enum ira_algorithm
177{
178 IRA_ALGORITHM_CB,
179 IRA_ALGORITHM_PRIORITY
180};
181
182/* The regions used for the integrated register allocator (IRA). */
183enum ira_region
184{
185 IRA_REGION_ONE,
186 IRA_REGION_ALL,
187 IRA_REGION_MIXED,
188};
189
190/* The options for excess precision. */
191enum excess_precision
192{
193 EXCESS_PRECISION_DEFAULT,
194 EXCESS_PRECISION_FAST,
195 EXCESS_PRECISION_STANDARD,
196 EXCESS_PRECISION_FLOAT16
197};
198
199/* The options for which values of FLT_EVAL_METHOD are permissible. */
200enum permitted_flt_eval_methods
201{
202 PERMITTED_FLT_EVAL_METHODS_DEFAULT,
203 PERMITTED_FLT_EVAL_METHODS_TS_18661,
204 PERMITTED_FLT_EVAL_METHODS_C11
205};
206
207/* Type of stack check.
208
209 Stack checking is designed to detect infinite recursion and stack
210 overflows for Ada programs. Furthermore stack checking tries to ensure
211 in that scenario that enough stack space is left to run a signal handler.
212
213 -fstack-check= does not prevent stack-clash style attacks. For that
214 you want -fstack-clash-protection. */
215enum stack_check_type
216{
217 /* Do not check the stack. */
218 NO_STACK_CHECK = 0,
219
220 /* Check the stack generically, i.e. assume no specific support
221 from the target configuration files. */
222 GENERIC_STACK_CHECK,
223
224 /* Check the stack and rely on the target configuration files to
225 check the static frame of functions, i.e. use the generic
226 mechanism only for dynamic stack allocations. */
227 STATIC_BUILTIN_STACK_CHECK,
228
229 /* Check the stack and entirely rely on the target configuration
230 files, i.e. do not use the generic mechanism at all. */
231 FULL_BUILTIN_STACK_CHECK
232};
233
234/* Type of callgraph information. */
235enum callgraph_info_type
236{
237 /* No information. */
238 NO_CALLGRAPH_INFO = 0,
239
240 /* Naked callgraph. */
241 CALLGRAPH_INFO_NAKED = 1,
242
243 /* Callgraph decorated with stack usage information. */
244 CALLGRAPH_INFO_STACK_USAGE = 2,
245
246 /* Callgraph decoration with dynamic allocation information. */
247 CALLGRAPH_INFO_DYNAMIC_ALLOC = 4
248};
249
250/* Floating-point contraction mode. */
251enum fp_contract_mode {
252 FP_CONTRACT_OFF = 0,
253 FP_CONTRACT_ON = 1,
254 FP_CONTRACT_FAST = 2
255};
256
257/* Scalar storage order kind. */
258enum scalar_storage_order_kind {
259 SSO_NATIVE = 0,
260 SSO_BIG_ENDIAN,
261 SSO_LITTLE_ENDIAN
262};
263
264/* Vectorizer cost-model. Except for DEFAULT, the values are ordered from
265 the most conservative to the least conservative. */
266enum vect_cost_model {
267 VECT_COST_MODEL_VERY_CHEAP = -3,
268 VECT_COST_MODEL_CHEAP = -2,
269 VECT_COST_MODEL_DYNAMIC = -1,
270 VECT_COST_MODEL_UNLIMITED = 0,
271 VECT_COST_MODEL_DEFAULT = 1
272};
273
274/* Automatic variable initialization type. */
275enum auto_init_type {
276 AUTO_INIT_UNINITIALIZED = 0,
277 AUTO_INIT_PATTERN = 1,
278 AUTO_INIT_ZERO = 2
279};
280
281/* Different instrumentation modes. */
282enum sanitize_code {
283 /* AddressSanitizer. */
284 SANITIZE_ADDRESS = 1UL << 0,
285 SANITIZE_USER_ADDRESS = 1UL << 1,
286 SANITIZE_KERNEL_ADDRESS = 1UL << 2,
287 /* ThreadSanitizer. */
288 SANITIZE_THREAD = 1UL << 3,
289 /* LeakSanitizer. */
290 SANITIZE_LEAK = 1UL << 4,
291 /* UndefinedBehaviorSanitizer. */
292 SANITIZE_SHIFT_BASE = 1UL << 5,
293 SANITIZE_SHIFT_EXPONENT = 1UL << 6,
294 SANITIZE_DIVIDE = 1UL << 7,
295 SANITIZE_UNREACHABLE = 1UL << 8,
296 SANITIZE_VLA = 1UL << 9,
297 SANITIZE_NULL = 1UL << 10,
298 SANITIZE_RETURN = 1UL << 11,
299 SANITIZE_SI_OVERFLOW = 1UL << 12,
300 SANITIZE_BOOL = 1UL << 13,
301 SANITIZE_ENUM = 1UL << 14,
302 SANITIZE_FLOAT_DIVIDE = 1UL << 15,
303 SANITIZE_FLOAT_CAST = 1UL << 16,
304 SANITIZE_BOUNDS = 1UL << 17,
305 SANITIZE_ALIGNMENT = 1UL << 18,
306 SANITIZE_NONNULL_ATTRIBUTE = 1UL << 19,
307 SANITIZE_RETURNS_NONNULL_ATTRIBUTE = 1UL << 20,
308 SANITIZE_OBJECT_SIZE = 1UL << 21,
309 SANITIZE_VPTR = 1UL << 22,
310 SANITIZE_BOUNDS_STRICT = 1UL << 23,
311 SANITIZE_POINTER_OVERFLOW = 1UL << 24,
312 SANITIZE_BUILTIN = 1UL << 25,
313 SANITIZE_POINTER_COMPARE = 1UL << 26,
314 SANITIZE_POINTER_SUBTRACT = 1UL << 27,
315 SANITIZE_HWADDRESS = 1UL << 28,
316 SANITIZE_USER_HWADDRESS = 1UL << 29,
317 SANITIZE_KERNEL_HWADDRESS = 1UL << 30,
318 /* Shadow Call Stack. */
319 SANITIZE_SHADOW_CALL_STACK = 1UL << 31,
320 SANITIZE_SHIFT = SANITIZE_SHIFT_BASE | SANITIZE_SHIFT_EXPONENT,
321 SANITIZE_UNDEFINED = SANITIZE_SHIFT | SANITIZE_DIVIDE | SANITIZE_UNREACHABLE
322 | SANITIZE_VLA | SANITIZE_NULL | SANITIZE_RETURN
323 | SANITIZE_SI_OVERFLOW | SANITIZE_BOOL | SANITIZE_ENUM
324 | SANITIZE_BOUNDS | SANITIZE_ALIGNMENT
325 | SANITIZE_NONNULL_ATTRIBUTE
326 | SANITIZE_RETURNS_NONNULL_ATTRIBUTE
327 | SANITIZE_OBJECT_SIZE | SANITIZE_VPTR
328 | SANITIZE_POINTER_OVERFLOW | SANITIZE_BUILTIN,
329 SANITIZE_UNDEFINED_NONDEFAULT = SANITIZE_FLOAT_DIVIDE | SANITIZE_FLOAT_CAST
330 | SANITIZE_BOUNDS_STRICT
331};
332
333/* Different settings for zeroing subset of registers. */
334namespace zero_regs_flags {
335 const unsigned int UNSET = 0;
336 const unsigned int SKIP = 1UL << 0;
337 const unsigned int ONLY_USED = 1UL << 1;
338 const unsigned int ONLY_GPR = 1UL << 2;
339 const unsigned int ONLY_ARG = 1UL << 3;
340 const unsigned int ENABLED = 1UL << 4;
341 const unsigned int USED_GPR_ARG = ENABLED | ONLY_USED | ONLY_GPR | ONLY_ARG;
342 const unsigned int USED_GPR = ENABLED | ONLY_USED | ONLY_GPR;
343 const unsigned int USED_ARG = ENABLED | ONLY_USED | ONLY_ARG;
344 const unsigned int USED = ENABLED | ONLY_USED;
345 const unsigned int ALL_GPR_ARG = ENABLED | ONLY_GPR | ONLY_ARG;
346 const unsigned int ALL_GPR = ENABLED | ONLY_GPR;
347 const unsigned int ALL_ARG = ENABLED | ONLY_ARG;
348 const unsigned int ALL = ENABLED;
349}
350
351/* Settings of flag_incremental_link. */
352enum incremental_link {
353 INCREMENTAL_LINK_NONE,
354 /* Do incremental linking and produce binary. */
355 INCREMENTAL_LINK_NOLTO,
356 /* Do incremental linking and produce IL. */
357 INCREMENTAL_LINK_LTO
358};
359
360/* Different trace modes. */
361enum sanitize_coverage_code {
362 /* Trace PC. */
363 SANITIZE_COV_TRACE_PC = 1 << 0,
364 /* Trace Comparison. */
365 SANITIZE_COV_TRACE_CMP = 1 << 1
366};
367
368/* flag_vtable_verify initialization levels. */
369enum vtv_priority {
370 VTV_NO_PRIORITY = 0, /* i.E. Do NOT do vtable verification. */
371 VTV_STANDARD_PRIORITY = 1,
372 VTV_PREINIT_PRIORITY = 2
373};
374
375/* flag_lto_partition initialization values. */
376enum lto_partition_model {
377 LTO_PARTITION_NONE = 0,
378 LTO_PARTITION_ONE = 1,
379 LTO_PARTITION_BALANCED = 2,
380 LTO_PARTITION_1TO1 = 3,
381 LTO_PARTITION_MAX = 4
382};
383
384/* flag_lto_linker_output initialization values. */
385enum lto_linker_output {
386 LTO_LINKER_OUTPUT_UNKNOWN,
387 LTO_LINKER_OUTPUT_REL,
388 LTO_LINKER_OUTPUT_NOLTOREL,
389 LTO_LINKER_OUTPUT_DYN,
390 LTO_LINKER_OUTPUT_PIE,
391 LTO_LINKER_OUTPUT_EXEC
392};
393
394/* gfortran -finit-real= values. */
395
396enum gfc_init_local_real
397{
398 GFC_INIT_REAL_OFF = 0,
399 GFC_INIT_REAL_ZERO,
400 GFC_INIT_REAL_NAN,
401 GFC_INIT_REAL_SNAN,
402 GFC_INIT_REAL_INF,
403 GFC_INIT_REAL_NEG_INF
404};
405
406/* gfortran -fcoarray= values. */
407
408enum gfc_fcoarray
409{
410 GFC_FCOARRAY_NONE = 0,
411 GFC_FCOARRAY_SINGLE,
412 GFC_FCOARRAY_LIB
413};
414
415
416/* gfortran -fconvert= values; used for unformatted I/O.
417 Keep in sync with GFC_CONVERT_* in gcc/fortran/libgfortran.h. */
418enum gfc_convert
419{
420 GFC_FLAG_CONVERT_NATIVE = 0,
421 GFC_FLAG_CONVERT_SWAP,
422 GFC_FLAG_CONVERT_BIG,
423 GFC_FLAG_CONVERT_LITTLE,
424 GFC_FLAG_CONVERT_R16_IEEE = 4,
425 GFC_FLAG_CONVERT_R16_IEEE_SWAP,
426 GFC_FLAG_CONVERT_R16_IEEE_BIG,
427 GFC_FLAG_CONVERT_R16_IEEE_LITTLE,
428 GFC_FLAG_CONVERT_R16_IBM = 8,
429 GFC_FLAG_CONVERT_R16_IBM_SWAP,
430 GFC_FLAG_CONVERT_R16_IBM_BIG,
431 GFC_FLAG_CONVERT_R16_IBM_LITTLE,
432};
433
434
435/* Control-Flow Protection values. */
436enum cf_protection_level
437{
438 CF_NONE = 0,
439 CF_BRANCH = 1 << 0,
440 CF_RETURN = 1 << 1,
441 CF_FULL = CF_BRANCH | CF_RETURN,
442 CF_SET = 1 << 2,
443 CF_CHECK = 1 << 3
444};
445
446/* Parloops schedule type. */
447enum parloops_schedule_type
448{
449 PARLOOPS_SCHEDULE_STATIC = 0,
450 PARLOOPS_SCHEDULE_DYNAMIC,
451 PARLOOPS_SCHEDULE_GUIDED,
452 PARLOOPS_SCHEDULE_AUTO,
453 PARLOOPS_SCHEDULE_RUNTIME
454};
455
456/* Ranger debug mode. */
457enum ranger_debug
458{
459 RANGER_DEBUG_NONE = 0,
460 RANGER_DEBUG_TRACE = 1,
461 RANGER_DEBUG_CACHE = 2,
462 RANGER_DEBUG_GORI = 4,
463 RANGER_DEBUG_TRACE_GORI = (RANGER_DEBUG_TRACE | RANGER_DEBUG_GORI),
464 RANGER_DEBUG_TRACE_CACHE = (RANGER_DEBUG_TRACE | RANGER_DEBUG_CACHE),
465 RANGER_DEBUG_ALL = (RANGER_DEBUG_GORI | RANGER_DEBUG_CACHE
466 | RANGER_DEBUG_TRACE)
467};
468
469/* Jump threader verbose dumps. */
470enum threader_debug
471{
472 THREADER_DEBUG_NONE = 0,
473 THREADER_DEBUG_ALL = 1
474};
475
476/* VRP modes. */
477enum vrp_mode
478{
479 VRP_MODE_VRP,
480 VRP_MODE_RANGER
481};
482
483/* Modes of OpenACC 'kernels' constructs handling. */
484enum openacc_kernels
485{
486 OPENACC_KERNELS_DECOMPOSE,
487 OPENACC_KERNELS_PARLOOPS
488};
489
490/* Modes of OpenACC privatization diagnostics. */
491enum openacc_privatization
492{
493 OPENACC_PRIVATIZATION_QUIET,
494 OPENACC_PRIVATIZATION_NOISY
495};
496
497/* Targets for -fopenmp-target-simd-clone. */
498enum omp_target_simd_clone_device_kind
499{
500 OMP_TARGET_SIMD_CLONE_NONE = 0,
501 OMP_TARGET_SIMD_CLONE_HOST = 1,
502 OMP_TARGET_SIMD_CLONE_NOHOST = 2,
503 OMP_TARGET_SIMD_CLONE_ANY = 3
504};
505
506#endif
507
508#endif /* ! GCC_FLAG_TYPES_H */
509

source code of gcc/flag-types.h