gcc/flag-types.h

   1 /* Compilation switch flag type definitions for GCC.
   2    Copyright (C) 1987-2021 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along 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
  25 enum debug_info_type
  26 {
  27   DINFO_TYPE_NONE = 0,            /* No debug info.  */
  28   DINFO_TYPE_DBX = 1,             /* BSD .stabs for DBX.  */
  29   DINFO_TYPE_DWARF2 = 2,          /* Dwarf v2 debug info.  */
  30   DINFO_TYPE_XCOFF = 3,           /* IBM/Xcoff debug info.  */
  31   DINFO_TYPE_VMS = 4,             /* VMS debug info.  */
  32   DINFO_TYPE_CTF = 5,             /* CTF debug info.  */
  33   DINFO_TYPE_BTF = 6,             /* BTF debug info.  */
  34   DINFO_TYPE_BTF_WITH_CORE = 7,   /* BTF debug info with CO-RE relocations.  */
  35   DINFO_TYPE_MAX = DINFO_TYPE_BTF_WITH_CORE /* Marker only.  */
  36 };
  37
  38 #define NO_DEBUG      (0U)
  39 /* Write DBX debug info (using dbxout.c).  */
  40 #define DBX_DEBUG     (1U << DINFO_TYPE_DBX)
  41 /* Write DWARF2 debug info (using dwarf2out.c).  */
  42 #define DWARF2_DEBUG  (1U << DINFO_TYPE_DWARF2)
  43 /* Write IBM/XCOFF debug info (using dbxout.c).  */
  44 #define XCOFF_DEBUG   (1U << DINFO_TYPE_XCOFF)
  45 /* Write VMS debug info (using vmsdbgout.c).  */
  46 #define VMS_DEBUG     (1U << DINFO_TYPE_VMS)
  47 /* Write CTF debug info (using ctfout.c).  */
  48 #define CTF_DEBUG     (1U << DINFO_TYPE_CTF)
  49 /* Write BTF debug info (using btfout.c).  */
  50 #define BTF_DEBUG     (1U << DINFO_TYPE_BTF)
  51 /* Write BTF debug info for BPF CO-RE usecase (using btfout.c).  */
  52 #define BTF_WITH_CORE_DEBUG     (1U << DINFO_TYPE_BTF_WITH_CORE)
  53
  54 /* Note: Adding new definitions to handle -combination- of debug formats,
  55    like VMS_AND_DWARF2_DEBUG is not recommended.  This definition remains
  56    here for historical reasons.  */
  57 /* Write VMS debug info (using vmsdbgout.c) and DWARF v2 debug info (using
  58    dwarf2out.c).  */
  59 #define VMS_AND_DWARF2_DEBUG  ((VMS_DEBUG | DWARF2_DEBUG))
  60
  61 enum debug_info_levels
  62 {
  63   DINFO_LEVEL_NONE,     /* Write no debugging info.  */
  64   DINFO_LEVEL_TERSE,    /* Write minimal info to support tracebacks only.  */
  65   DINFO_LEVEL_NORMAL,   /* Write info for all declarations (and line table).  */
  66   DINFO_LEVEL_VERBOSE   /* Write normal info plus #define/#undef info.  */
  67 };
  68
  69 /* CTF debug info levels.
  70    CTF debug info levels are untied with DWARF debug info levels because CTF
  71    may co-exist with DWARF.  */
  72 enum ctf_debug_info_levels
  73 {
  74   CTFINFO_LEVEL_NONE = 0,     /* Write no CTF debug info.  */
  75   CTFINFO_LEVEL_TERSE = 1,    /* Write CTF information to support tracebacks
  76                                  only.  Not Implemented.  */
  77   CTFINFO_LEVEL_NORMAL = 2    /* Write CTF type information for all entities
  78                                  (functions, data objects, variables etc.)
  79                                  at file-scope or global-scope only.  */
  80 };
  81
  82 /* A major contribution to object and executable size is debug
  83    information size.  A major contribution to debug information
  84    size is struct descriptions replicated in several object files.
  85    The following function determines whether or not debug information
  86    should be generated for a given struct.  The indirect parameter
  87    indicates that the struct is being handled indirectly, via
  88    a pointer.  See opts.c for the implementation. */
  89
  90 enum debug_info_usage
  91 {
  92   DINFO_USAGE_DFN,      /* A struct definition. */
  93   DINFO_USAGE_DIR_USE,  /* A direct use, such as the type of a variable. */
  94   DINFO_USAGE_IND_USE,  /* An indirect use, such as through a pointer. */
  95   DINFO_USAGE_NUM_ENUMS /* The number of enumerators. */
  96 };
  97
  98 /* A major contribution to object and executable size is debug
  99    information size.  A major contribution to debug information size
 100    is struct descriptions replicated in several object files. The
 101    following flags attempt to reduce this information.  The basic
 102    idea is to not emit struct debugging information in the current
 103    compilation unit when that information will be generated by
 104    another compilation unit.
 105
 106    Debug information for a struct defined in the current source
 107    file should be generated in the object file.  Likewise the
 108    debug information for a struct defined in a header should be
 109    generated in the object file of the corresponding source file.
 110    Both of these case are handled when the base name of the file of
 111    the struct definition matches the base name of the source file
 112    of the current compilation unit.  This matching emits minimal
 113    struct debugging information.
 114
 115    The base file name matching rule above will fail to emit debug
 116    information for structs defined in system headers.  So a second
 117    category of files includes system headers in addition to files
 118    with matching bases.
 119
 120    The remaining types of files are library headers and application
 121    headers.  We cannot currently distinguish these two types.  */
 122
 123 enum debug_struct_file
 124 {
 125   DINFO_STRUCT_FILE_NONE,   /* Debug no structs. */
 126   DINFO_STRUCT_FILE_BASE,   /* Debug structs defined in files with the
 127                                same base name as the compilation unit. */
 128   DINFO_STRUCT_FILE_SYS,    /* Also debug structs defined in system
 129                                header files.  */
 130   DINFO_STRUCT_FILE_ANY     /* Debug structs defined in all files. */
 131 };
 132
 133 /* Balance between GNAT encodings and standard DWARF to emit.  */
 134
 135 enum dwarf_gnat_encodings
 136 {
 137   DWARF_GNAT_ENCODINGS_ALL = 0,     /* Emit all GNAT encodings, then emit as
 138                                        much standard DWARF as possible so it
 139                                        does not conflict with GNAT
 140                                        encodings.  */
 141   DWARF_GNAT_ENCODINGS_GDB = 1,     /* Emit as much standard DWARF as possible
 142                                        as long as GDB handles them.  Emit GNAT
 143                                        encodings for the rest.  */
 144   DWARF_GNAT_ENCODINGS_MINIMAL = 2  /* Emit all the standard DWARF we can.
 145                                        Emit GNAT encodings for the rest.  */
 146 };
 147
 148 /* Enumerate Objective-c instance variable visibility settings. */
 149
 150 enum ivar_visibility
 151 {
 152   IVAR_VISIBILITY_PRIVATE,
 153   IVAR_VISIBILITY_PROTECTED,
 154   IVAR_VISIBILITY_PUBLIC,
 155   IVAR_VISIBILITY_PACKAGE
 156 };
 157
 158 /* The stack reuse level.  */
 159 enum stack_reuse_level
 160 {
 161   SR_NONE,
 162   SR_NAMED_VARS,
 163   SR_ALL
 164 };
 165
 166 /* The live patching level.  */
 167 enum live_patching_level
 168 {
 169   LIVE_PATCHING_NONE = 0,
 170   LIVE_PATCHING_INLINE_ONLY_STATIC,
 171   LIVE_PATCHING_INLINE_CLONE
 172 };
 173
 174 /* The algorithm used for basic block reordering.  */
 175 enum reorder_blocks_algorithm
 176 {
 177   REORDER_BLOCKS_ALGORITHM_SIMPLE,
 178   REORDER_BLOCKS_ALGORITHM_STC
 179 };
 180
 181 /* The algorithm used for the integrated register allocator (IRA).  */
 182 enum ira_algorithm
 183 {
 184   IRA_ALGORITHM_CB,
 185   IRA_ALGORITHM_PRIORITY
 186 };
 187
 188 /* The regions used for the integrated register allocator (IRA).  */
 189 enum ira_region
 190 {
 191   IRA_REGION_ONE,
 192   IRA_REGION_ALL,
 193   IRA_REGION_MIXED,
 194 };
 195
 196 /* The options for excess precision.  */
 197 enum excess_precision
 198 {
 199   EXCESS_PRECISION_DEFAULT,
 200   EXCESS_PRECISION_FAST,
 201   EXCESS_PRECISION_STANDARD,
 202   EXCESS_PRECISION_FLOAT16
 203 };
 204
 205 /* The options for which values of FLT_EVAL_METHOD are permissible.  */
 206 enum permitted_flt_eval_methods
 207 {
 208   PERMITTED_FLT_EVAL_METHODS_DEFAULT,
 209   PERMITTED_FLT_EVAL_METHODS_TS_18661,
 210   PERMITTED_FLT_EVAL_METHODS_C11
 211 };
 212
 213 /* Type of stack check.
 214
 215    Stack checking is designed to detect infinite recursion and stack
 216    overflows for Ada programs.  Furthermore stack checking tries to ensure
 217    in that scenario that enough stack space is left to run a signal handler.
 218
 219    -fstack-check= does not prevent stack-clash style attacks.  For that
 220    you want -fstack-clash-protection.  */
 221 enum stack_check_type
 222 {
 223   /* Do not check the stack.  */
 224   NO_STACK_CHECK = 0,
 225
 226   /* Check the stack generically, i.e. assume no specific support
 227      from the target configuration files.  */
 228   GENERIC_STACK_CHECK,
 229
 230   /* Check the stack and rely on the target configuration files to
 231      check the static frame of functions, i.e. use the generic
 232      mechanism only for dynamic stack allocations.  */
 233   STATIC_BUILTIN_STACK_CHECK,
 234
 235   /* Check the stack and entirely rely on the target configuration
 236      files, i.e. do not use the generic mechanism at all.  */
 237   FULL_BUILTIN_STACK_CHECK
 238 };
 239
 240 /* Type of callgraph information.  */
 241 enum callgraph_info_type
 242 {
 243   /* No information.  */
 244   NO_CALLGRAPH_INFO = 0,
 245
 246   /* Naked callgraph.  */
 247   CALLGRAPH_INFO_NAKED = 1,
 248
 249   /* Callgraph decorated with stack usage information.  */
 250   CALLGRAPH_INFO_STACK_USAGE = 2,
 251
 252   /* Callgraph decoration with dynamic allocation information.  */
 253   CALLGRAPH_INFO_DYNAMIC_ALLOC = 4
 254 };
 255
 256 /* Floating-point contraction mode.  */
 257 enum fp_contract_mode {
 258   FP_CONTRACT_OFF = 0,
 259   FP_CONTRACT_ON = 1,
 260   FP_CONTRACT_FAST = 2
 261 };
 262
 263 /* Scalar storage order kind.  */
 264 enum scalar_storage_order_kind {
 265   SSO_NATIVE = 0,
 266   SSO_BIG_ENDIAN,
 267   SSO_LITTLE_ENDIAN
 268 };
 269
 270 /* Vectorizer cost-model.  Except for DEFAULT, the values are ordered from
 271    the most conservative to the least conservative.  */
 272 enum vect_cost_model {
 273   VECT_COST_MODEL_VERY_CHEAP = -3,
 274   VECT_COST_MODEL_CHEAP = -2,
 275   VECT_COST_MODEL_DYNAMIC = -1,
 276   VECT_COST_MODEL_UNLIMITED = 0,
 277   VECT_COST_MODEL_DEFAULT = 1
 278 };
 279
 280 /* Automatic variable initialization type.  */
 281 enum auto_init_type {
 282   AUTO_INIT_UNINITIALIZED = 0,
 283   AUTO_INIT_PATTERN = 1,
 284   AUTO_INIT_ZERO = 2
 285 };
 286
 287 /* Different instrumentation modes.  */
 288 enum sanitize_code {
 289   /* AddressSanitizer.  */
 290   SANITIZE_ADDRESS = 1UL << 0,
 291   SANITIZE_USER_ADDRESS = 1UL << 1,
 292   SANITIZE_KERNEL_ADDRESS = 1UL << 2,
 293   /* ThreadSanitizer.  */
 294   SANITIZE_THREAD = 1UL << 3,
 295   /* LeakSanitizer.  */
 296   SANITIZE_LEAK = 1UL << 4,
 297   /* UndefinedBehaviorSanitizer.  */
 298   SANITIZE_SHIFT_BASE = 1UL << 5,
 299   SANITIZE_SHIFT_EXPONENT = 1UL << 6,
 300   SANITIZE_DIVIDE = 1UL << 7,
 301   SANITIZE_UNREACHABLE = 1UL << 8,
 302   SANITIZE_VLA = 1UL << 9,
 303   SANITIZE_NULL = 1UL << 10,
 304   SANITIZE_RETURN = 1UL << 11,
 305   SANITIZE_SI_OVERFLOW = 1UL << 12,
 306   SANITIZE_BOOL = 1UL << 13,
 307   SANITIZE_ENUM = 1UL << 14,
 308   SANITIZE_FLOAT_DIVIDE = 1UL << 15,
 309   SANITIZE_FLOAT_CAST = 1UL << 16,
 310   SANITIZE_BOUNDS = 1UL << 17,
 311   SANITIZE_ALIGNMENT = 1UL << 18,
 312   SANITIZE_NONNULL_ATTRIBUTE = 1UL << 19,
 313   SANITIZE_RETURNS_NONNULL_ATTRIBUTE = 1UL << 20,
 314   SANITIZE_OBJECT_SIZE = 1UL << 21,
 315   SANITIZE_VPTR = 1UL << 22,
 316   SANITIZE_BOUNDS_STRICT = 1UL << 23,
 317   SANITIZE_POINTER_OVERFLOW = 1UL << 24,
 318   SANITIZE_BUILTIN = 1UL << 25,
 319   SANITIZE_POINTER_COMPARE = 1UL << 26,
 320   SANITIZE_POINTER_SUBTRACT = 1UL << 27,
 321   SANITIZE_HWADDRESS = 1UL << 28,
 322   SANITIZE_USER_HWADDRESS = 1UL << 29,
 323   SANITIZE_KERNEL_HWADDRESS = 1UL << 30,
 324   SANITIZE_SHIFT = SANITIZE_SHIFT_BASE | SANITIZE_SHIFT_EXPONENT,
 325   SANITIZE_UNDEFINED = SANITIZE_SHIFT | SANITIZE_DIVIDE | SANITIZE_UNREACHABLE
 326                        | SANITIZE_VLA | SANITIZE_NULL | SANITIZE_RETURN
 327                        | SANITIZE_SI_OVERFLOW | SANITIZE_BOOL | SANITIZE_ENUM
 328                        | SANITIZE_BOUNDS | SANITIZE_ALIGNMENT
 329                        | SANITIZE_NONNULL_ATTRIBUTE
 330                        | SANITIZE_RETURNS_NONNULL_ATTRIBUTE
 331                        | SANITIZE_OBJECT_SIZE | SANITIZE_VPTR
 332                        | SANITIZE_POINTER_OVERFLOW | SANITIZE_BUILTIN,
 333   SANITIZE_UNDEFINED_NONDEFAULT = SANITIZE_FLOAT_DIVIDE | SANITIZE_FLOAT_CAST
 334                                   | SANITIZE_BOUNDS_STRICT
 335 };
 336
 337 /* Different settings for zeroing subset of registers.  */
 338 namespace zero_regs_flags {
 339   const unsigned int UNSET = 0;
 340   const unsigned int SKIP = 1UL << 0;
 341   const unsigned int ONLY_USED = 1UL << 1;
 342   const unsigned int ONLY_GPR = 1UL << 2;
 343   const unsigned int ONLY_ARG = 1UL << 3;
 344   const unsigned int ENABLED = 1UL << 4;
 345   const unsigned int USED_GPR_ARG = ENABLED | ONLY_USED | ONLY_GPR | ONLY_ARG;
 346   const unsigned int USED_GPR = ENABLED | ONLY_USED | ONLY_GPR;
 347   const unsigned int USED_ARG = ENABLED | ONLY_USED | ONLY_ARG;
 348   const unsigned int USED = ENABLED | ONLY_USED;
 349   const unsigned int ALL_GPR_ARG = ENABLED | ONLY_GPR | ONLY_ARG;
 350   const unsigned int ALL_GPR = ENABLED | ONLY_GPR;
 351   const unsigned int ALL_ARG = ENABLED | ONLY_ARG;
 352   const unsigned int ALL = ENABLED;
 353 }
 354
 355 /* Settings of flag_incremental_link.  */
 356 enum incremental_link {
 357   INCREMENTAL_LINK_NONE,
 358   /* Do incremental linking and produce binary.  */
 359   INCREMENTAL_LINK_NOLTO,
 360   /* Do incremental linking and produce IL.  */
 361   INCREMENTAL_LINK_LTO
 362 };
 363
 364 /* Different trace modes.  */
 365 enum sanitize_coverage_code {
 366   /* Trace PC.  */
 367   SANITIZE_COV_TRACE_PC = 1 << 0,
 368   /* Trace Comparison.  */
 369   SANITIZE_COV_TRACE_CMP = 1 << 1
 370 };
 371
 372 /* flag_vtable_verify initialization levels. */
 373 enum vtv_priority {
 374   VTV_NO_PRIORITY       = 0,  /* i.E. Do NOT do vtable verification. */
 375   VTV_STANDARD_PRIORITY = 1,
 376   VTV_PREINIT_PRIORITY  = 2
 377 };
 378
 379 /* flag_lto_partition initialization values.  */
 380 enum lto_partition_model {
 381   LTO_PARTITION_NONE = 0,
 382   LTO_PARTITION_ONE = 1,
 383   LTO_PARTITION_BALANCED = 2,
 384   LTO_PARTITION_1TO1 = 3,
 385   LTO_PARTITION_MAX = 4
 386 };
 387
 388 /* flag_lto_linker_output initialization values.  */
 389 enum lto_linker_output {
 390   LTO_LINKER_OUTPUT_UNKNOWN,
 391   LTO_LINKER_OUTPUT_REL,
 392   LTO_LINKER_OUTPUT_NOLTOREL,
 393   LTO_LINKER_OUTPUT_DYN,
 394   LTO_LINKER_OUTPUT_PIE,
 395   LTO_LINKER_OUTPUT_EXEC
 396 };
 397
 398 /* gfortran -finit-real= values.  */
 399
 400 enum gfc_init_local_real
 401 {
 402   GFC_INIT_REAL_OFF = 0,
 403   GFC_INIT_REAL_ZERO,
 404   GFC_INIT_REAL_NAN,
 405   GFC_INIT_REAL_SNAN,
 406   GFC_INIT_REAL_INF,
 407   GFC_INIT_REAL_NEG_INF
 408 };
 409
 410 /* gfortran -fcoarray= values.  */
 411
 412 enum gfc_fcoarray
 413 {
 414   GFC_FCOARRAY_NONE = 0,
 415   GFC_FCOARRAY_SINGLE,
 416   GFC_FCOARRAY_LIB
 417 };
 418
 419
 420 /* gfortran -fconvert= values; used for unformatted I/O.
 421    Keep in sync with GFC_CONVERT_* in gcc/fortran/libgfortran.h.   */
 422 enum gfc_convert
 423 {
 424   GFC_FLAG_CONVERT_NATIVE = 0,
 425   GFC_FLAG_CONVERT_SWAP,
 426   GFC_FLAG_CONVERT_BIG,
 427   GFC_FLAG_CONVERT_LITTLE
 428 };
 429
 430
 431 /* Control-Flow Protection values.  */
 432 enum cf_protection_level
 433 {
 434   CF_NONE = 0,
 435   CF_BRANCH = 1 << 0,
 436   CF_RETURN = 1 << 1,
 437   CF_FULL = CF_BRANCH | CF_RETURN,
 438   CF_SET = 1 << 2,
 439   CF_CHECK = 1 << 3
 440 };
 441
 442 /* Parloops schedule type.  */
 443 enum parloops_schedule_type
 444 {
 445   PARLOOPS_SCHEDULE_STATIC = 0,
 446   PARLOOPS_SCHEDULE_DYNAMIC,
 447   PARLOOPS_SCHEDULE_GUIDED,
 448   PARLOOPS_SCHEDULE_AUTO,
 449   PARLOOPS_SCHEDULE_RUNTIME
 450 };
 451
 452 /* Ranger debug mode.  */
 453 enum ranger_debug
 454 {
 455   RANGER_DEBUG_NONE = 0,
 456   RANGER_DEBUG_TRACE = 1,
 457   RANGER_DEBUG_CACHE = 2,
 458   RANGER_DEBUG_GORI = 4,
 459   RANGER_DEBUG_TRACE_GORI = (RANGER_DEBUG_TRACE | RANGER_DEBUG_GORI),
 460   RANGER_DEBUG_TRACE_CACHE = (RANGER_DEBUG_TRACE | RANGER_DEBUG_CACHE),
 461   RANGER_DEBUG_ALL = (RANGER_DEBUG_GORI | RANGER_DEBUG_CACHE)
 462 };
 463
 464 /* EVRP mode.  */
 465 enum evrp_mode
 466 {
 467   EVRP_MODE_RVRP_ONLY,
 468   EVRP_MODE_EVRP_ONLY,
 469   EVRP_MODE_EVRP_FIRST,
 470   EVRP_MODE_RVRP_FIRST
 471 };
 472
 473 /* VRP modes.  */
 474 enum vrp_mode
 475 {
 476   VRP_MODE_VRP,
 477   VRP_MODE_RANGER
 478 };
 479
 480 /* Modes of OpenACC 'kernels' constructs handling.  */
 481 enum openacc_kernels
 482 {
 483   OPENACC_KERNELS_DECOMPOSE,
 484   OPENACC_KERNELS_PARLOOPS
 485 };
 486
 487 /* Modes of OpenACC privatization diagnostics.  */
 488 enum openacc_privatization
 489 {
 490   OPENACC_PRIVATIZATION_QUIET,
 491   OPENACC_PRIVATIZATION_NOISY
 492 };
 493
 494 #endif
 495
 496 #endif /* ! GCC_FLAG_TYPES_H */