gcc/flag-types.h

   1 /* Compilation switch flag type definitions for GCC.
   2    Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
   3    2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef GCC_FLAG_TYPES_H
  23 #define GCC_FLAG_TYPES_H
  24
  25 enum debug_info_type
  26 {
  27   NO_DEBUG,         /* Write no debug info.  */
  28   DBX_DEBUG,        /* Write BSD .stabs for DBX (using dbxout.c).  */
  29   SDB_DEBUG,        /* Write COFF for (old) SDB (using sdbout.c).  */
  30   DWARF2_DEBUG,     /* Write Dwarf v2 debug info (using dwarf2out.c).  */
  31   XCOFF_DEBUG,      /* Write IBM/Xcoff debug info (using dbxout.c).  */
  32   VMS_DEBUG,        /* Write VMS debug info (using vmsdbgout.c).  */
  33   VMS_AND_DWARF2_DEBUG /* Write VMS debug info (using vmsdbgout.c).
  34                           and DWARF v2 debug info (using dwarf2out.c).  */
  35 };
  36
  37 enum debug_info_levels
  38 {
  39   DINFO_LEVEL_NONE,     /* Write no debugging info.  */
  40   DINFO_LEVEL_TERSE,    /* Write minimal info to support tracebacks only.  */
  41   DINFO_LEVEL_NORMAL,   /* Write info for all declarations (and line table).  */
  42   DINFO_LEVEL_VERBOSE   /* Write normal info plus #define/#undef info.  */
  43 };
  44
  45 /* A major contribution to object and executable size is debug
  46    information size.  A major contribution to debug information
  47    size is struct descriptions replicated in several object files.
  48    The following function determines whether or not debug information
  49    should be generated for a given struct.  The indirect parameter
  50    indicates that the struct is being handled indirectly, via
  51    a pointer.  See opts.c for the implementation. */
  52
  53 enum debug_info_usage
  54 {
  55   DINFO_USAGE_DFN,      /* A struct definition. */
  56   DINFO_USAGE_DIR_USE,  /* A direct use, such as the type of a variable. */
  57   DINFO_USAGE_IND_USE,  /* An indirect use, such as through a pointer. */
  58   DINFO_USAGE_NUM_ENUMS /* The number of enumerators. */
  59 };
  60
  61 /* A major contribution to object and executable size is debug
  62    information size.  A major contribution to debug information size
  63    is struct descriptions replicated in several object files. The
  64    following flags attempt to reduce this information.  The basic
  65    idea is to not emit struct debugging information in the current
  66    compilation unit when that information will be generated by
  67    another compilation unit.
  68
  69    Debug information for a struct defined in the current source
  70    file should be generated in the object file.  Likewise the
  71    debug information for a struct defined in a header should be
  72    generated in the object file of the corresponding source file.
  73    Both of these case are handled when the base name of the file of
  74    the struct definition matches the base name of the source file
  75    of the current compilation unit.  This matching emits minimal
  76    struct debugging information.
  77
  78    The base file name matching rule above will fail to emit debug
  79    information for structs defined in system headers.  So a second
  80    category of files includes system headers in addition to files
  81    with matching bases.
  82
  83    The remaining types of files are library headers and application
  84    headers.  We cannot currently distinguish these two types.  */
  85
  86 enum debug_struct_file
  87 {
  88   DINFO_STRUCT_FILE_NONE,   /* Debug no structs. */
  89   DINFO_STRUCT_FILE_BASE,   /* Debug structs defined in files with the
  90                                same base name as the compilation unit. */
  91   DINFO_STRUCT_FILE_SYS,    /* Also debug structs defined in system
  92                                header files.  */
  93   DINFO_STRUCT_FILE_ANY     /* Debug structs defined in all files. */
  94 };
  95
  96 /* Enumerate visibility settings.  This is deliberately ordered from most
  97    to least visibility.  */
  98 #ifndef SYMBOL_VISIBILITY_DEFINED
  99 #define SYMBOL_VISIBILITY_DEFINED
 100 enum symbol_visibility
 101 {
 102   VISIBILITY_DEFAULT,
 103   VISIBILITY_PROTECTED,
 104   VISIBILITY_HIDDEN,
 105   VISIBILITY_INTERNAL
 106 };
 107 #endif
 108
 109 /* The stack reuse level.  */
 110 enum stack_reuse_level
 111 {
 112   SR_NONE,
 113   SR_NAMED_VARS,
 114   SR_ALL
 115 };
 116
 117 /* The algorithm used for the integrated register allocator (IRA).  */
 118 enum ira_algorithm
 119 {
 120   IRA_ALGORITHM_CB,
 121   IRA_ALGORITHM_PRIORITY
 122 };
 123
 124 /* The regions used for the integrated register allocator (IRA).  */
 125 enum ira_region
 126 {
 127   IRA_REGION_ONE,
 128   IRA_REGION_ALL,
 129   IRA_REGION_MIXED,
 130   /* This value means that there were no options -fira-region on the
 131      command line and that we should choose a value depending on the
 132      used -O option.  */
 133   IRA_REGION_AUTODETECT
 134 };
 135
 136 /* The options for excess precision.  */
 137 enum excess_precision
 138 {
 139   EXCESS_PRECISION_DEFAULT,
 140   EXCESS_PRECISION_FAST,
 141   EXCESS_PRECISION_STANDARD
 142 };
 143
 144 /* Type of stack check.  */
 145 enum stack_check_type
 146 {
 147   /* Do not check the stack.  */
 148   NO_STACK_CHECK = 0,
 149
 150   /* Check the stack generically, i.e. assume no specific support
 151      from the target configuration files.  */
 152   GENERIC_STACK_CHECK,
 153
 154   /* Check the stack and rely on the target configuration files to
 155      check the static frame of functions, i.e. use the generic
 156      mechanism only for dynamic stack allocations.  */
 157   STATIC_BUILTIN_STACK_CHECK,
 158
 159   /* Check the stack and entirely rely on the target configuration
 160      files, i.e. do not use the generic mechanism at all.  */
 161   FULL_BUILTIN_STACK_CHECK
 162 };
 163
 164 /* Names for the different levels of -Wstrict-overflow=N.  The numeric
 165    values here correspond to N.  */
 166
 167 enum warn_strict_overflow_code
 168 {
 169   /* Overflow warning that should be issued with -Wall: a questionable
 170      construct that is easy to avoid even when using macros.  Example:
 171      folding (x + CONSTANT > x) to 1.  */
 172   WARN_STRICT_OVERFLOW_ALL = 1,
 173   /* Overflow warning about folding a comparison to a constant because
 174      of undefined signed overflow, other than cases covered by
 175      WARN_STRICT_OVERFLOW_ALL.  Example: folding (abs (x) >= 0) to 1
 176      (this is false when x == INT_MIN).  */
 177   WARN_STRICT_OVERFLOW_CONDITIONAL = 2,
 178   /* Overflow warning about changes to comparisons other than folding
 179      them to a constant.  Example: folding (x + 1 > 1) to (x > 0).  */
 180   WARN_STRICT_OVERFLOW_COMPARISON = 3,
 181   /* Overflow warnings not covered by the above cases.  Example:
 182      folding ((x * 10) / 5) to (x * 2).  */
 183   WARN_STRICT_OVERFLOW_MISC = 4,
 184   /* Overflow warnings about reducing magnitude of constants in
 185      comparison.  Example: folding (x + 2 > y) to (x + 1 >= y).  */
 186   WARN_STRICT_OVERFLOW_MAGNITUDE = 5
 187 };
 188
 189 /* Floating-point contraction mode.  */
 190 enum fp_contract_mode {
 191   FP_CONTRACT_OFF = 0,
 192   FP_CONTRACT_ON = 1,
 193   FP_CONTRACT_FAST = 2
 194 };
 195
 196 #endif /* ! GCC_FLAG_TYPES_H */