gcc/flag-types.h

   1 /* Compilation switch flag type definitions for GCC.
   2    Copyright (C) 1987-2018 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 enum debug_info_type
  24 {
  25   NO_DEBUG,         /* Write no debug info.  */
  26   DBX_DEBUG,        /* Write BSD .stabs for DBX (using dbxout.c).  */
  27   DWARF2_DEBUG,     /* Write Dwarf v2 debug info (using dwarf2out.c).  */
  28   XCOFF_DEBUG,      /* Write IBM/Xcoff debug info (using dbxout.c).  */
  29   VMS_DEBUG,        /* Write VMS debug info (using vmsdbgout.c).  */
  30   VMS_AND_DWARF2_DEBUG /* Write VMS debug info (using vmsdbgout.c).
  31                           and DWARF v2 debug info (using dwarf2out.c).  */
  32 };
  33
  34 enum debug_info_levels
  35 {
  36   DINFO_LEVEL_NONE,     /* Write no debugging info.  */
  37   DINFO_LEVEL_TERSE,    /* Write minimal info to support tracebacks only.  */
  38   DINFO_LEVEL_NORMAL,   /* Write info for all declarations (and line table).  */
  39   DINFO_LEVEL_VERBOSE   /* Write normal info plus #define/#undef info.  */
  40 };
  41
  42 /* A major contribution to object and executable size is debug
  43    information size.  A major contribution to debug information
  44    size is struct descriptions replicated in several object files.
  45    The following function determines whether or not debug information
  46    should be generated for a given struct.  The indirect parameter
  47    indicates that the struct is being handled indirectly, via
  48    a pointer.  See opts.c for the implementation. */
  49
  50 enum debug_info_usage
  51 {
  52   DINFO_USAGE_DFN,      /* A struct definition. */
  53   DINFO_USAGE_DIR_USE,  /* A direct use, such as the type of a variable. */
  54   DINFO_USAGE_IND_USE,  /* An indirect use, such as through a pointer. */
  55   DINFO_USAGE_NUM_ENUMS /* The number of enumerators. */
  56 };
  57
  58 /* A major contribution to object and executable size is debug
  59    information size.  A major contribution to debug information size
  60    is struct descriptions replicated in several object files. The
  61    following flags attempt to reduce this information.  The basic
  62    idea is to not emit struct debugging information in the current
  63    compilation unit when that information will be generated by
  64    another compilation unit.
  65
  66    Debug information for a struct defined in the current source
  67    file should be generated in the object file.  Likewise the
  68    debug information for a struct defined in a header should be
  69    generated in the object file of the corresponding source file.
  70    Both of these case are handled when the base name of the file of
  71    the struct definition matches the base name of the source file
  72    of the current compilation unit.  This matching emits minimal
  73    struct debugging information.
  74
  75    The base file name matching rule above will fail to emit debug
  76    information for structs defined in system headers.  So a second
  77    category of files includes system headers in addition to files
  78    with matching bases.
  79
  80    The remaining types of files are library headers and application
  81    headers.  We cannot currently distinguish these two types.  */
  82
  83 enum debug_struct_file
  84 {
  85   DINFO_STRUCT_FILE_NONE,   /* Debug no structs. */
  86   DINFO_STRUCT_FILE_BASE,   /* Debug structs defined in files with the
  87                                same base name as the compilation unit. */
  88   DINFO_STRUCT_FILE_SYS,    /* Also debug structs defined in system
  89                                header files.  */
  90   DINFO_STRUCT_FILE_ANY     /* Debug structs defined in all files. */
  91 };
  92
  93 /* Balance between GNAT encodings and standard DWARF to emit.  */
  94
  95 enum dwarf_gnat_encodings
  96 {
  97   DWARF_GNAT_ENCODINGS_ALL = 0,     /* Emit all GNAT encodings, then emit as
  98                                        much standard DWARF as possible so it
  99                                        does not conflict with GNAT
 100                                        encodings.  */
 101   DWARF_GNAT_ENCODINGS_GDB = 1,     /* Emit as much standard DWARF as possible
 102                                        as long as GDB handles them.  Emit GNAT
 103                                        encodings for the rest.  */
 104   DWARF_GNAT_ENCODINGS_MINIMAL = 2  /* Emit all the standard DWARF we can.
 105                                        Emit GNAT encodings for the rest.  */
 106 };
 107
 108 /* Enumerate Objective-c instance variable visibility settings. */
 109
 110 enum ivar_visibility
 111 {
 112   IVAR_VISIBILITY_PRIVATE,
 113   IVAR_VISIBILITY_PROTECTED,
 114   IVAR_VISIBILITY_PUBLIC,
 115   IVAR_VISIBILITY_PACKAGE
 116 };
 117
 118 /* The stack reuse level.  */
 119 enum stack_reuse_level
 120 {
 121   SR_NONE,
 122   SR_NAMED_VARS,
 123   SR_ALL
 124 };
 125
 126 /* The algorithm used for basic block reordering.  */
 127 enum reorder_blocks_algorithm
 128 {
 129   REORDER_BLOCKS_ALGORITHM_SIMPLE,
 130   REORDER_BLOCKS_ALGORITHM_STC
 131 };
 132
 133 /* The algorithm used for the integrated register allocator (IRA).  */
 134 enum ira_algorithm
 135 {
 136   IRA_ALGORITHM_CB,
 137   IRA_ALGORITHM_PRIORITY
 138 };
 139
 140 /* The regions used for the integrated register allocator (IRA).  */
 141 enum ira_region
 142 {
 143   IRA_REGION_ONE,
 144   IRA_REGION_ALL,
 145   IRA_REGION_MIXED,
 146   /* This value means that there were no options -fira-region on the
 147      command line and that we should choose a value depending on the
 148      used -O option.  */
 149   IRA_REGION_AUTODETECT
 150 };
 151
 152 /* The options for excess precision.  */
 153 enum excess_precision
 154 {
 155   EXCESS_PRECISION_DEFAULT,
 156   EXCESS_PRECISION_FAST,
 157   EXCESS_PRECISION_STANDARD
 158 };
 159
 160 /* The options for which values of FLT_EVAL_METHOD are permissible.  */
 161 enum permitted_flt_eval_methods
 162 {
 163   PERMITTED_FLT_EVAL_METHODS_DEFAULT,
 164   PERMITTED_FLT_EVAL_METHODS_TS_18661,
 165   PERMITTED_FLT_EVAL_METHODS_C11
 166 };
 167
 168 /* Type of stack check.
 169
 170    Stack checking is designed to detect infinite recursion and stack
 171    overflows for Ada programs.  Furthermore stack checking tries to ensure
 172    in that scenario that enough stack space is left to run a signal handler.
 173
 174    -fstack-check= does not prevent stack-clash style attacks.  For that
 175    you want -fstack-clash-protection.  */
 176 enum stack_check_type
 177 {
 178   /* Do not check the stack.  */
 179   NO_STACK_CHECK = 0,
 180
 181   /* Check the stack generically, i.e. assume no specific support
 182      from the target configuration files.  */
 183   GENERIC_STACK_CHECK,
 184
 185   /* Check the stack and rely on the target configuration files to
 186      check the static frame of functions, i.e. use the generic
 187      mechanism only for dynamic stack allocations.  */
 188   STATIC_BUILTIN_STACK_CHECK,
 189
 190   /* Check the stack and entirely rely on the target configuration
 191      files, i.e. do not use the generic mechanism at all.  */
 192   FULL_BUILTIN_STACK_CHECK
 193 };
 194
 195 /* Floating-point contraction mode.  */
 196 enum fp_contract_mode {
 197   FP_CONTRACT_OFF = 0,
 198   FP_CONTRACT_ON = 1,
 199   FP_CONTRACT_FAST = 2
 200 };
 201
 202 /* Scalar storage order kind.  */
 203 enum scalar_storage_order_kind {
 204   SSO_NATIVE = 0,
 205   SSO_BIG_ENDIAN,
 206   SSO_LITTLE_ENDIAN
 207 };
 208
 209 /* Vectorizer cost-model.  */
 210 enum vect_cost_model {
 211   VECT_COST_MODEL_UNLIMITED = 0,
 212   VECT_COST_MODEL_CHEAP = 1,
 213   VECT_COST_MODEL_DYNAMIC = 2,
 214   VECT_COST_MODEL_DEFAULT = 3
 215 };
 216
 217 /* Different instrumentation modes.  */
 218 enum sanitize_code {
 219   /* AddressSanitizer.  */
 220   SANITIZE_ADDRESS = 1UL << 0,
 221   SANITIZE_USER_ADDRESS = 1UL << 1,
 222   SANITIZE_KERNEL_ADDRESS = 1UL << 2,
 223   /* ThreadSanitizer.  */
 224   SANITIZE_THREAD = 1UL << 3,
 225   /* LeakSanitizer.  */
 226   SANITIZE_LEAK = 1UL << 4,
 227   /* UndefinedBehaviorSanitizer.  */
 228   SANITIZE_SHIFT_BASE = 1UL << 5,
 229   SANITIZE_SHIFT_EXPONENT = 1UL << 6,
 230   SANITIZE_DIVIDE = 1UL << 7,
 231   SANITIZE_UNREACHABLE = 1UL << 8,
 232   SANITIZE_VLA = 1UL << 9,
 233   SANITIZE_NULL = 1UL << 10,
 234   SANITIZE_RETURN = 1UL << 11,
 235   SANITIZE_SI_OVERFLOW = 1UL << 12,
 236   SANITIZE_BOOL = 1UL << 13,
 237   SANITIZE_ENUM = 1UL << 14,
 238   SANITIZE_FLOAT_DIVIDE = 1UL << 15,
 239   SANITIZE_FLOAT_CAST = 1UL << 16,
 240   SANITIZE_BOUNDS = 1UL << 17,
 241   SANITIZE_ALIGNMENT = 1UL << 18,
 242   SANITIZE_NONNULL_ATTRIBUTE = 1UL << 19,
 243   SANITIZE_RETURNS_NONNULL_ATTRIBUTE = 1UL << 20,
 244   SANITIZE_OBJECT_SIZE = 1UL << 21,
 245   SANITIZE_VPTR = 1UL << 22,
 246   SANITIZE_BOUNDS_STRICT = 1UL << 23,
 247   SANITIZE_POINTER_OVERFLOW = 1UL << 24,
 248   SANITIZE_BUILTIN = 1UL << 25,
 249   SANITIZE_POINTER_COMPARE = 1UL << 26,
 250   SANITIZE_POINTER_SUBTRACT = 1UL << 27,
 251   SANITIZE_SHIFT = SANITIZE_SHIFT_BASE | SANITIZE_SHIFT_EXPONENT,
 252   SANITIZE_UNDEFINED = SANITIZE_SHIFT | SANITIZE_DIVIDE | SANITIZE_UNREACHABLE
 253                        | SANITIZE_VLA | SANITIZE_NULL | SANITIZE_RETURN
 254                        | SANITIZE_SI_OVERFLOW | SANITIZE_BOOL | SANITIZE_ENUM
 255                        | SANITIZE_BOUNDS | SANITIZE_ALIGNMENT
 256                        | SANITIZE_NONNULL_ATTRIBUTE
 257                        | SANITIZE_RETURNS_NONNULL_ATTRIBUTE
 258                        | SANITIZE_OBJECT_SIZE | SANITIZE_VPTR
 259                        | SANITIZE_POINTER_OVERFLOW | SANITIZE_BUILTIN,
 260   SANITIZE_UNDEFINED_NONDEFAULT = SANITIZE_FLOAT_DIVIDE | SANITIZE_FLOAT_CAST
 261                                   | SANITIZE_BOUNDS_STRICT
 262 };
 263
 264 /* Different trace modes.  */
 265 enum sanitize_coverage_code {
 266   /* Trace PC.  */
 267   SANITIZE_COV_TRACE_PC = 1 << 0,
 268   /* Trace Comparison.  */
 269   SANITIZE_COV_TRACE_CMP = 1 << 1
 270 };
 271
 272 /* flag_vtable_verify initialization levels. */
 273 enum vtv_priority {
 274   VTV_NO_PRIORITY       = 0,  /* i.E. Do NOT do vtable verification. */
 275   VTV_STANDARD_PRIORITY = 1,
 276   VTV_PREINIT_PRIORITY  = 2
 277 };
 278
 279 /* flag_lto_partition initialization values.  */
 280 enum lto_partition_model {
 281   LTO_PARTITION_NONE = 0,
 282   LTO_PARTITION_ONE = 1,
 283   LTO_PARTITION_BALANCED = 2,
 284   LTO_PARTITION_1TO1 = 3,
 285   LTO_PARTITION_MAX = 4
 286 };
 287
 288 /* flag_lto_linker_output initialization values.  */
 289 enum lto_linker_output {
 290   LTO_LINKER_OUTPUT_UNKNOWN,
 291   LTO_LINKER_OUTPUT_REL,
 292   LTO_LINKER_OUTPUT_DYN,
 293   LTO_LINKER_OUTPUT_PIE,
 294   LTO_LINKER_OUTPUT_EXEC
 295 };
 296
 297 /* gfortran -finit-real= values.  */
 298
 299 enum gfc_init_local_real
 300 {
 301   GFC_INIT_REAL_OFF = 0,
 302   GFC_INIT_REAL_ZERO,
 303   GFC_INIT_REAL_NAN,
 304   GFC_INIT_REAL_SNAN,
 305   GFC_INIT_REAL_INF,
 306   GFC_INIT_REAL_NEG_INF
 307 };
 308
 309 /* gfortran -fcoarray= values.  */
 310
 311 enum gfc_fcoarray
 312 {
 313   GFC_FCOARRAY_NONE = 0,
 314   GFC_FCOARRAY_SINGLE,
 315   GFC_FCOARRAY_LIB
 316 };
 317
 318
 319 /* gfortran -fconvert= values; used for unformatted I/O.
 320    Keep in sync with GFC_CONVERT_* in gcc/fortran/libgfortran.h.   */
 321 enum gfc_convert
 322 {
 323   GFC_FLAG_CONVERT_NATIVE = 0,
 324   GFC_FLAG_CONVERT_SWAP,
 325   GFC_FLAG_CONVERT_BIG,
 326   GFC_FLAG_CONVERT_LITTLE
 327 };
 328
 329
 330 /* Control-Flow Protection values.  */
 331 enum cf_protection_level
 332 {
 333   CF_NONE = 0,
 334   CF_BRANCH = 1 << 0,
 335   CF_RETURN = 1 << 1,
 336   CF_FULL = CF_BRANCH | CF_RETURN,
 337   CF_SET = 1 << 2
 338 };
 339 #endif /* ! GCC_FLAG_TYPES_H */