projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* Compilation switch flag definitions for GNU CC. |
| 2 | Copyright (C) 1987, 1988 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GNU CC. | |
| 5 | ||
| 6 | GNU CC is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 1, or (at your option) | |
| 9 | any later version. | |
| 10 | ||
| 11 | GNU CC is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with GNU CC; see the file COPYING. If not, write to | |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 19 | ||
| 20 | /* Name of the input .c file being compiled. */ | |
| 21 | extern char *main_input_filename; | |
| 22 | ||
| 23 | /* 1 => write gdb debugging output (using symout.c). | |
| 24 | 2 => write dbx debugging output (using dbxout.c). | |
| 25 | 3 => write sdb debugging output (using sdbout.c). */ | |
| 26 | enum debugger { NO_DEBUG = 0, GDB_DEBUG = 1, DBX_DEBUG = 2, SDB_DEBUG = 3, | |
| 27 | EXTENDED_DBX_DEBUG = 4 }; | |
| 28 | ||
| 29 | extern enum debugger write_symbols; | |
| 30 | ||
| 31 | /* Nonzero means use GDB-only extensions of DBX format. */ | |
| 32 | extern int use_gdb_dbx_extensions; | |
| 33 | ||
| 34 | /* Nonzero means do optimizations. -opt. */ | |
| 35 | ||
| 36 | extern int optimize; | |
| 37 | ||
| 38 | /* Nonzero means do stupid register allocation. -noreg. | |
| 39 | This and `optimize' are controlled by different switches in cc1, | |
| 40 | but normally cc controls them both with the -O switch. */ | |
| 41 | ||
| 42 | extern int obey_regdecls; | |
| 43 | ||
| 44 | /* Don't print functions as they are compiled and don't print | |
| 45 | times taken by the various passes. -quiet. */ | |
| 46 | ||
| 47 | extern int quiet_flag; | |
| 48 | ||
| 49 | /* Don't print warning messages. -w. */ | |
| 50 | ||
| 51 | extern int inhibit_warnings; | |
| 52 | ||
| 53 | /* Do print extra warnings (such as for uninitialized variables). -W. */ | |
| 54 | ||
| 55 | extern int extra_warnings; | |
| 56 | ||
| 57 | /* Nonzero to warn about unused local variables. */ | |
| 58 | ||
| 59 | extern int warn_unused; | |
| 60 | ||
| 61 | /* Nonzero means warn about all declarations which shadow others. */ | |
| 62 | ||
| 63 | extern int warn_shadow; | |
| 64 | ||
| 65 | /* Warn if a switch on an enum fails to have a case for every enum value. */ | |
| 66 | ||
| 67 | extern int warn_switch; | |
| 68 | ||
| 69 | /* Nonzero means warn about any identifiers that match in the first N | |
| 70 | characters. The value N is in `id_clash_len'. */ | |
| 71 | ||
| 72 | extern int warn_id_clash; | |
| 73 | extern int id_clash_len; | |
| 74 | ||
| 75 | /* Nonzero if generating code to do profiling. */ | |
| 76 | ||
| 77 | extern int profile_flag; | |
| 78 | ||
| 79 | /* Nonzero if generating code to do profiling on the basis of basic blocks. */ | |
| 80 | ||
| 81 | extern int profile_block_flag; | |
| 82 | ||
| 83 | /* Nonzero for -pedantic switch: warn about anything | |
| 84 | that standard C forbids. */ | |
| 85 | ||
| 86 | extern int pedantic; | |
| 87 | \f | |
| 88 | /* Now the symbols that are set with `-f' switches. */ | |
| 89 | ||
| 90 | /* Nonzero means `char' should be signed. */ | |
| 91 | ||
| 92 | extern int flag_signed_char; | |
| 93 | ||
| 94 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
| 95 | ||
| 96 | extern int flag_short_enums; | |
| 97 | ||
| 98 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
| 99 | be saved across function calls, if that produces overall better code. | |
| 100 | Optional now, so people can test it. */ | |
| 101 | ||
| 102 | extern int flag_caller_saves; | |
| 103 | ||
| 104 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ | |
| 105 | ||
| 106 | extern int flag_pcc_struct_return; | |
| 107 | ||
| 108 | /* Nonzero for -fforce-mem: load memory value into a register | |
| 109 | before arithmetic on it. This makes better cse but slower compilation. */ | |
| 110 | ||
| 111 | extern int flag_force_mem; | |
| 112 | ||
| 113 | /* Nonzero for -fforce-addr: load memory address into a register before | |
| 114 | reference to memory. This makes better cse but slower compilation. */ | |
| 115 | ||
| 116 | extern int flag_force_addr; | |
| 117 | ||
| 118 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
| 119 | instead save them up to pop many calls' args with one insns. */ | |
| 120 | ||
| 121 | extern int flag_defer_pop; | |
| 122 | ||
| 123 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
| 124 | in extended-precision registers. */ | |
| 125 | ||
| 126 | extern int flag_float_store; | |
| 127 | ||
| 128 | /* Nonzero for -fcombine-regs: | |
| 129 | allow instruction combiner to combine an insn | |
| 130 | that just copies one reg to another. */ | |
| 131 | ||
| 132 | extern int flag_combine_regs; | |
| 133 | ||
| 134 | /* Nonzero enables strength-reduction in loop.c. */ | |
| 135 | ||
| 136 | extern int flag_strength_reduce; | |
| 137 | ||
| 138 | /* Nonzero for -fwritable-strings: | |
| 139 | store string constants in data segment and don't uniquize them. */ | |
| 140 | ||
| 141 | extern int flag_writable_strings; | |
| 142 | ||
| 143 | /* Nonzero means don't put addresses of constant functions in registers. | |
| 144 | Used for compiling the Unix kernel, where strange substitutions are | |
| 145 | done on the assembly output. */ | |
| 146 | ||
| 147 | extern int flag_no_function_cse; | |
| 148 | ||
| 149 | /* Nonzero for -fomit-frame-pointer: | |
| 150 | don't make a frame pointer in simple functions that don't require one. */ | |
| 151 | ||
| 152 | extern int flag_omit_frame_pointer; | |
| 153 | ||
| 154 | /* This isn't a flag, but everyone who needs flag_omit_frame_pointer | |
| 155 | also needs this. | |
| 156 | Nonzero means current function must be given a frame pointer. | |
| 157 | Set in stmt.c if anything is allocated on the stack there. | |
| 158 | Set in reload1.c if anything is allocated on the stack there. */ | |
| 159 | ||
| 160 | extern int frame_pointer_needed; | |
| 161 | ||
| 162 | /* Nonzero to inhibit use of define_optimization peephole opts. */ | |
| 163 | ||
| 164 | extern int flag_no_peephole; | |
| 165 | ||
| 166 | /* Nonzero means all references through pointers are volatile. */ | |
| 167 | ||
| 168 | extern int flag_volatile; | |
| 169 | ||
| 170 | /* Nonzero means make functions that look like good inline candidates | |
| 171 | go inline. */ | |
| 172 | ||
| 173 | extern int flag_inline_functions; | |
| 174 | ||
| 175 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
| 176 | go inline everywhere, keep its defintion around for debugging | |
| 177 | purposes. */ | |
| 178 | ||
| 179 | extern int flag_keep_inline_functions; | |
| 180 | ||
| 181 | /* Nonzero if we are only using compiler to check syntax errors. */ | |
| 182 | ||
| 183 | extern int flag_syntax_only; | |
| 184 | ||
| 185 | /* Nonzero means make the text shared if supported. */ | |
| 186 | ||
| 187 | extern int flag_shared_data; | |
| 188 | ||
| 189 | /* Nonzero means put things in delayed-branch slots if supported. */ | |
| 190 | ||
| 191 | extern int flag_delayed_branch; |