Mercurial > hg > CbC > CbC_gcc
annotate gcc/opts.c @ 48:9907f3135723
update CbC on GCC from 4.4.2 to 4.4.3.
| author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 07 Feb 2010 17:48:31 +0900 |
| parents | 3bfb6c00c1e0 |
| children | 77e2b8dfacca |
| rev | line source |
|---|---|
| 0 | 1 /* Command line option handling. |
| 2 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 | |
| 3 Free Software Foundation, Inc. | |
| 4 Contributed by Neil Booth. | |
| 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 #include "config.h" | |
| 23 #include "system.h" | |
| 24 #include "intl.h" | |
| 25 #include "coretypes.h" | |
| 26 #include "tm.h" | |
| 27 #include "tree.h" | |
| 28 #include "rtl.h" | |
| 29 #include "expr.h" | |
| 30 #include "ggc.h" | |
| 31 #include "output.h" | |
| 32 #include "langhooks.h" | |
| 33 #include "opts.h" | |
| 34 #include "options.h" | |
| 35 #include "flags.h" | |
| 36 #include "toplev.h" | |
| 37 #include "params.h" | |
| 38 #include "diagnostic.h" | |
| 39 #include "tm_p.h" /* For OPTIMIZATION_OPTIONS. */ | |
| 40 #include "insn-attr.h" /* For INSN_SCHEDULING. */ | |
| 41 #include "target.h" | |
| 42 #include "tree-pass.h" | |
| 43 #include "dbgcnt.h" | |
| 44 #include "debug.h" | |
| 45 | |
| 46 /* Value of the -G xx switch, and whether it was passed or not. */ | |
| 47 unsigned HOST_WIDE_INT g_switch_value; | |
| 48 bool g_switch_set; | |
| 49 | |
| 50 /* Same for selective scheduling. */ | |
| 51 bool sel_sched_switch_set; | |
| 52 | |
| 53 /* True if we should exit after parsing options. */ | |
| 54 bool exit_after_options; | |
| 55 | |
| 56 /* Print various extra warnings. -W/-Wextra. */ | |
| 57 bool extra_warnings; | |
| 58 | |
| 59 /* True to warn about any objects definitions whose size is larger | |
| 60 than N bytes. Also want about function definitions whose returned | |
| 61 values are larger than N bytes, where N is `larger_than_size'. */ | |
| 62 bool warn_larger_than; | |
| 63 HOST_WIDE_INT larger_than_size; | |
| 64 | |
| 65 /* True to warn about any function whose frame size is larger | |
| 66 * than N bytes. */ | |
| 67 bool warn_frame_larger_than; | |
| 68 HOST_WIDE_INT frame_larger_than_size; | |
| 69 | |
| 70 /* Type(s) of debugging information we are producing (if any). See | |
| 71 flags.h for the definitions of the different possible types of | |
| 72 debugging information. */ | |
| 73 enum debug_info_type write_symbols = NO_DEBUG; | |
| 74 | |
| 75 /* Level of debugging information we are producing. See flags.h for | |
| 76 the definitions of the different possible levels. */ | |
| 77 enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
| 78 | |
| 79 /* A major contribution to object and executable size is debug | |
| 80 information size. A major contribution to debug information size | |
| 81 is struct descriptions replicated in several object files. The | |
| 82 following flags attempt to reduce this information. The basic | |
| 83 idea is to not emit struct debugging information in the current | |
| 84 compilation unit when that information will be generated by | |
| 85 another compilation unit. | |
| 86 | |
| 87 Debug information for a struct defined in the current source | |
| 88 file should be generated in the object file. Likewise the | |
| 89 debug information for a struct defined in a header should be | |
| 90 generated in the object file of the corresponding source file. | |
| 91 Both of these case are handled when the base name of the file of | |
| 92 the struct definition matches the base name of the source file | |
| 93 of the current compilation unit. This matching emits minimal | |
| 94 struct debugging information. | |
| 95 | |
| 96 The base file name matching rule above will fail to emit debug | |
| 97 information for structs defined in system headers. So a second | |
| 98 category of files includes system headers in addition to files | |
| 99 with matching bases. | |
| 100 | |
| 101 The remaining types of files are library headers and application | |
| 102 headers. We cannot currently distinguish these two types. */ | |
| 103 | |
| 104 enum debug_struct_file | |
| 105 { | |
| 106 DINFO_STRUCT_FILE_NONE, /* Debug no structs. */ | |
| 107 DINFO_STRUCT_FILE_BASE, /* Debug structs defined in files with the | |
| 108 same base name as the compilation unit. */ | |
| 109 DINFO_STRUCT_FILE_SYS, /* Also debug structs defined in system | |
| 110 header files. */ | |
| 111 DINFO_STRUCT_FILE_ANY /* Debug structs defined in all files. */ | |
| 112 }; | |
| 113 | |
| 114 /* Generic structs (e.g. templates not explicitly specialized) | |
| 115 may not have a compilation unit associated with them, and so | |
| 116 may need to be treated differently from ordinary structs. | |
| 117 | |
| 118 Structs only handled by reference (indirectly), will also usually | |
| 119 not need as much debugging information. */ | |
| 120 | |
| 121 static enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] | |
| 122 = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
| 123 static enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] | |
| 124 = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
| 125 | |
| 126 /* Parse the -femit-struct-debug-detailed option value | |
| 127 and set the flag variables. */ | |
| 128 | |
| 129 #define MATCH( prefix, string ) \ | |
| 130 ((strncmp (prefix, string, sizeof prefix - 1) == 0) \ | |
| 131 ? ((string += sizeof prefix - 1), 1) : 0) | |
| 132 | |
| 133 void | |
| 134 set_struct_debug_option (const char *spec) | |
| 135 { | |
| 136 /* various labels for comparison */ | |
| 137 static char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:"; | |
| 138 static char ord_lbl[] = "ord:", gen_lbl[] = "gen:"; | |
| 139 static char none_lbl[] = "none", any_lbl[] = "any"; | |
| 140 static char base_lbl[] = "base", sys_lbl[] = "sys"; | |
| 141 | |
| 142 enum debug_struct_file files = DINFO_STRUCT_FILE_ANY; | |
| 143 /* Default is to apply to as much as possible. */ | |
| 144 enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS; | |
| 145 int ord = 1, gen = 1; | |
| 146 | |
| 147 /* What usage? */ | |
| 148 if (MATCH (dfn_lbl, spec)) | |
| 149 usage = DINFO_USAGE_DFN; | |
| 150 else if (MATCH (dir_lbl, spec)) | |
| 151 usage = DINFO_USAGE_DIR_USE; | |
| 152 else if (MATCH (ind_lbl, spec)) | |
| 153 usage = DINFO_USAGE_IND_USE; | |
| 154 | |
| 155 /* Generics or not? */ | |
| 156 if (MATCH (ord_lbl, spec)) | |
| 157 gen = 0; | |
| 158 else if (MATCH (gen_lbl, spec)) | |
| 159 ord = 0; | |
| 160 | |
| 161 /* What allowable environment? */ | |
| 162 if (MATCH (none_lbl, spec)) | |
| 163 files = DINFO_STRUCT_FILE_NONE; | |
| 164 else if (MATCH (any_lbl, spec)) | |
| 165 files = DINFO_STRUCT_FILE_ANY; | |
| 166 else if (MATCH (sys_lbl, spec)) | |
| 167 files = DINFO_STRUCT_FILE_SYS; | |
| 168 else if (MATCH (base_lbl, spec)) | |
| 169 files = DINFO_STRUCT_FILE_BASE; | |
| 170 else | |
| 171 error ("argument %qs to %<-femit-struct-debug-detailed%> not recognized", | |
| 172 spec); | |
| 173 | |
| 174 /* Effect the specification. */ | |
| 175 if (usage == DINFO_USAGE_NUM_ENUMS) | |
| 176 { | |
| 177 if (ord) | |
| 178 { | |
| 179 debug_struct_ordinary[DINFO_USAGE_DFN] = files; | |
| 180 debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files; | |
| 181 debug_struct_ordinary[DINFO_USAGE_IND_USE] = files; | |
| 182 } | |
| 183 if (gen) | |
| 184 { | |
| 185 debug_struct_generic[DINFO_USAGE_DFN] = files; | |
| 186 debug_struct_generic[DINFO_USAGE_DIR_USE] = files; | |
| 187 debug_struct_generic[DINFO_USAGE_IND_USE] = files; | |
| 188 } | |
| 189 } | |
| 190 else | |
| 191 { | |
| 192 if (ord) | |
| 193 debug_struct_ordinary[usage] = files; | |
| 194 if (gen) | |
| 195 debug_struct_generic[usage] = files; | |
| 196 } | |
| 197 | |
| 198 if (*spec == ',') | |
| 199 set_struct_debug_option (spec+1); | |
| 200 else | |
| 201 { | |
| 202 /* No more -femit-struct-debug-detailed specifications. | |
| 203 Do final checks. */ | |
| 204 if (*spec != '\0') | |
| 205 error ("argument %qs to %<-femit-struct-debug-detailed%> unknown", | |
| 206 spec); | |
| 207 if (debug_struct_ordinary[DINFO_USAGE_DIR_USE] | |
| 208 < debug_struct_ordinary[DINFO_USAGE_IND_USE] | |
| 209 || debug_struct_generic[DINFO_USAGE_DIR_USE] | |
| 210 < debug_struct_generic[DINFO_USAGE_IND_USE]) | |
| 211 error ("%<-femit-struct-debug-detailed=dir:...%> must allow at least" | |
| 212 " as much as %<-femit-struct-debug-detailed=ind:...%>"); | |
| 213 } | |
| 214 } | |
| 215 | |
| 216 /* Find the base name of a path, stripping off both directories and | |
| 217 a single final extension. */ | |
| 218 static int | |
| 219 base_of_path (const char *path, const char **base_out) | |
| 220 { | |
| 221 const char *base = path; | |
| 222 const char *dot = 0; | |
| 223 const char *p = path; | |
| 224 char c = *p; | |
| 225 while (c) | |
| 226 { | |
| 227 if (IS_DIR_SEPARATOR(c)) | |
| 228 { | |
| 229 base = p + 1; | |
| 230 dot = 0; | |
| 231 } | |
| 232 else if (c == '.') | |
| 233 dot = p; | |
| 234 c = *++p; | |
| 235 } | |
| 236 if (!dot) | |
| 237 dot = p; | |
| 238 *base_out = base; | |
| 239 return dot - base; | |
| 240 } | |
| 241 | |
| 242 /* Match the base name of a file to the base name of a compilation unit. */ | |
| 243 | |
| 244 static const char *main_input_basename; | |
| 245 static int main_input_baselength; | |
| 246 | |
| 247 static int | |
| 248 matches_main_base (const char *path) | |
| 249 { | |
| 250 /* Cache the last query. */ | |
| 251 static const char *last_path = NULL; | |
| 252 static int last_match = 0; | |
| 253 if (path != last_path) | |
| 254 { | |
| 255 const char *base; | |
| 256 int length = base_of_path (path, &base); | |
| 257 last_path = path; | |
| 258 last_match = (length == main_input_baselength | |
| 259 && memcmp (base, main_input_basename, length) == 0); | |
| 260 } | |
| 261 return last_match; | |
| 262 } | |
| 263 | |
| 264 #ifdef DEBUG_DEBUG_STRUCT | |
| 265 | |
| 266 static int | |
| 267 dump_struct_debug (tree type, enum debug_info_usage usage, | |
| 268 enum debug_struct_file criterion, int generic, | |
| 269 int matches, int result) | |
| 270 { | |
| 271 /* Find the type name. */ | |
| 272 tree type_decl = TYPE_STUB_DECL (type); | |
| 273 tree t = type_decl; | |
| 274 const char *name = 0; | |
| 275 if (TREE_CODE (t) == TYPE_DECL) | |
| 276 t = DECL_NAME (t); | |
| 277 if (t) | |
| 278 name = IDENTIFIER_POINTER (t); | |
| 279 | |
| 280 fprintf (stderr, " struct %d %s %s %s %s %d %p %s\n", | |
| 281 criterion, | |
| 282 DECL_IN_SYSTEM_HEADER (type_decl) ? "sys" : "usr", | |
| 283 matches ? "bas" : "hdr", | |
| 284 generic ? "gen" : "ord", | |
| 285 usage == DINFO_USAGE_DFN ? ";" : | |
| 286 usage == DINFO_USAGE_DIR_USE ? "." : "*", | |
| 287 result, | |
| 288 (void*) type_decl, name); | |
| 289 return result; | |
| 290 } | |
| 291 #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
| 292 dump_struct_debug (type, usage, criterion, generic, matches, result) | |
| 293 | |
| 294 #else | |
| 295 | |
| 296 #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
| 297 (result) | |
| 298 | |
| 299 #endif | |
| 300 | |
| 301 | |
| 302 bool | |
| 303 should_emit_struct_debug (tree type, enum debug_info_usage usage) | |
| 304 { | |
| 305 enum debug_struct_file criterion; | |
| 306 tree type_decl; | |
| 307 bool generic = lang_hooks.types.generic_p (type); | |
| 308 | |
| 309 if (generic) | |
| 310 criterion = debug_struct_generic[usage]; | |
| 311 else | |
| 312 criterion = debug_struct_ordinary[usage]; | |
| 313 | |
| 314 if (criterion == DINFO_STRUCT_FILE_NONE) | |
| 315 return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
| 316 if (criterion == DINFO_STRUCT_FILE_ANY) | |
| 317 return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
| 318 | |
| 319 type_decl = TYPE_STUB_DECL (type); | |
| 320 | |
| 321 if (criterion == DINFO_STRUCT_FILE_SYS && DECL_IN_SYSTEM_HEADER (type_decl)) | |
| 322 return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
| 323 | |
| 324 if (matches_main_base (DECL_SOURCE_FILE (type_decl))) | |
| 325 return DUMP_GSTRUCT (type, usage, criterion, generic, true, true); | |
| 326 return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
| 327 } | |
| 328 | |
| 329 /* Nonzero means use GNU-only extensions in the generated symbolic | |
| 330 debugging information. Currently, this only has an effect when | |
| 331 write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
| 332 bool use_gnu_debug_info_extensions; | |
| 333 | |
| 334 /* The default visibility for all symbols (unless overridden) */ | |
| 335 enum symbol_visibility default_visibility = VISIBILITY_DEFAULT; | |
| 336 | |
| 337 /* Global visibility options. */ | |
| 338 struct visibility_flags visibility_options; | |
| 339 | |
| 340 /* What to print when a switch has no documentation. */ | |
| 341 #ifdef ENABLE_CHECKING | |
| 342 static const char undocumented_msg[] = N_("This switch lacks documentation"); | |
| 343 #else | |
| 344 static const char undocumented_msg[] = ""; | |
| 345 #endif | |
| 346 | |
| 347 /* Used for bookkeeping on whether user set these flags so | |
| 348 -fprofile-use/-fprofile-generate does not use them. */ | |
| 349 static bool profile_arc_flag_set, flag_profile_values_set; | |
| 350 static bool flag_unroll_loops_set, flag_tracer_set; | |
| 351 static bool flag_value_profile_transformations_set; | |
| 352 static bool flag_peel_loops_set, flag_branch_probabilities_set; | |
| 353 static bool flag_inline_functions_set, flag_ipa_cp_set, flag_ipa_cp_clone_set; | |
| 354 static bool flag_predictive_commoning_set, flag_unswitch_loops_set, flag_gcse_after_reload_set; | |
| 355 | |
| 356 /* Functions excluded from profiling. */ | |
| 357 | |
| 358 typedef char *char_p; /* For DEF_VEC_P. */ | |
| 359 DEF_VEC_P(char_p); | |
| 360 DEF_VEC_ALLOC_P(char_p,heap); | |
| 361 | |
| 362 static VEC(char_p,heap) *flag_instrument_functions_exclude_functions; | |
| 363 static VEC(char_p,heap) *flag_instrument_functions_exclude_files; | |
| 364 | |
| 365 typedef const char *const_char_p; /* For DEF_VEC_P. */ | |
| 366 DEF_VEC_P(const_char_p); | |
| 367 DEF_VEC_ALLOC_P(const_char_p,heap); | |
| 368 | |
| 369 static VEC(const_char_p,heap) *ignored_options; | |
| 370 | |
| 371 /* Input file names. */ | |
| 372 const char **in_fnames; | |
| 373 unsigned num_in_fnames; | |
| 374 | |
| 375 static int common_handle_option (size_t scode, const char *arg, int value, | |
| 376 unsigned int lang_mask); | |
| 377 static void handle_param (const char *); | |
| 378 static void set_Wextra (int); | |
| 379 static unsigned int handle_option (const char **argv, unsigned int lang_mask); | |
| 380 static char *write_langs (unsigned int lang_mask); | |
| 381 static void complain_wrong_lang (const char *, const struct cl_option *, | |
| 382 unsigned int lang_mask); | |
| 383 static void handle_options (unsigned int, const char **, unsigned int); | |
| 384 static void set_debug_level (enum debug_info_type type, int extended, | |
| 385 const char *arg); | |
| 386 | |
| 387 /* If ARG is a non-negative integer made up solely of digits, return its | |
| 388 value, otherwise return -1. */ | |
| 389 static int | |
| 390 integral_argument (const char *arg) | |
| 391 { | |
| 392 const char *p = arg; | |
| 393 | |
| 394 while (*p && ISDIGIT (*p)) | |
| 395 p++; | |
| 396 | |
| 397 if (*p == '\0') | |
| 398 return atoi (arg); | |
| 399 | |
| 400 return -1; | |
| 401 } | |
| 402 | |
| 403 /* Return a malloced slash-separated list of languages in MASK. */ | |
| 404 static char * | |
| 405 write_langs (unsigned int mask) | |
| 406 { | |
| 407 unsigned int n = 0, len = 0; | |
| 408 const char *lang_name; | |
| 409 char *result; | |
| 410 | |
| 411 for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
| 412 if (mask & (1U << n)) | |
| 413 len += strlen (lang_name) + 1; | |
| 414 | |
| 415 result = XNEWVEC (char, len); | |
| 416 len = 0; | |
| 417 for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
| 418 if (mask & (1U << n)) | |
| 419 { | |
| 420 if (len) | |
| 421 result[len++] = '/'; | |
| 422 strcpy (result + len, lang_name); | |
| 423 len += strlen (lang_name); | |
| 424 } | |
| 425 | |
| 426 result[len] = 0; | |
| 427 | |
| 428 return result; | |
| 429 } | |
| 430 | |
| 431 /* Complain that switch OPT_INDEX does not apply to this front end. */ | |
| 432 static void | |
| 433 complain_wrong_lang (const char *text, const struct cl_option *option, | |
| 434 unsigned int lang_mask) | |
| 435 { | |
| 436 char *ok_langs, *bad_lang; | |
| 437 | |
| 438 ok_langs = write_langs (option->flags); | |
| 439 bad_lang = write_langs (lang_mask); | |
| 440 | |
| 441 /* Eventually this should become a hard error IMO. */ | |
| 442 warning (0, "command line option \"%s\" is valid for %s but not for %s", | |
| 443 text, ok_langs, bad_lang); | |
| 444 | |
| 445 free (ok_langs); | |
| 446 free (bad_lang); | |
| 447 } | |
| 448 | |
| 449 /* Buffer the unknown option described by the string OPT. Currently, | |
| 450 we only complain about unknown -Wno-* options if they may have | |
| 451 prevented a diagnostic. Otherwise, we just ignore them. | |
| 452 Note that if we do complain, it is only as a warning, not an error; | |
| 453 passing the compiler an unrecognised -Wno-* option should never | |
| 454 change whether the compilation succeeds or fails. */ | |
| 455 | |
| 456 static void postpone_unknown_option_warning(const char *opt) | |
| 457 { | |
| 458 VEC_safe_push (const_char_p, heap, ignored_options, opt); | |
| 459 } | |
| 460 | |
| 461 /* Produce a warning for each option previously buffered. */ | |
| 462 | |
| 463 void print_ignored_options (void) | |
| 464 { | |
| 465 location_t saved_loc = input_location; | |
| 466 | |
| 467 input_location = 0; | |
| 468 | |
| 469 while (!VEC_empty (const_char_p, ignored_options)) | |
| 470 { | |
| 471 const char *opt; | |
| 472 opt = VEC_pop (const_char_p, ignored_options); | |
| 473 warning (0, "unrecognized command line option \"%s\"", opt); | |
| 474 } | |
| 475 | |
| 476 input_location = saved_loc; | |
| 477 } | |
| 478 | |
| 479 /* Handle the switch beginning at ARGV for the language indicated by | |
| 480 LANG_MASK. Returns the number of switches consumed. */ | |
| 481 static unsigned int | |
| 482 handle_option (const char **argv, unsigned int lang_mask) | |
| 483 { | |
| 484 size_t opt_index; | |
| 485 const char *opt, *arg = 0; | |
| 486 char *dup = 0; | |
| 487 int value = 1; | |
| 488 unsigned int result = 0; | |
| 489 const struct cl_option *option; | |
| 490 | |
| 491 opt = argv[0]; | |
| 492 | |
| 493 opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); | |
| 494 if (opt_index == cl_options_count | |
| 495 && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') | |
| 496 && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') | |
| 497 { | |
| 498 /* Drop the "no-" from negative switches. */ | |
| 499 size_t len = strlen (opt) - 3; | |
| 500 | |
| 501 dup = XNEWVEC (char, len + 1); | |
| 502 dup[0] = '-'; | |
| 503 dup[1] = opt[1]; | |
| 504 memcpy (dup + 2, opt + 5, len - 2 + 1); | |
| 505 opt = dup; | |
| 506 value = 0; | |
| 507 opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); | |
| 508 if (opt_index == cl_options_count && opt[1] == 'W') | |
| 509 { | |
| 510 /* We don't generate warnings for unknown -Wno-* options | |
| 511 unless we issue diagnostics. */ | |
| 512 postpone_unknown_option_warning (argv[0]); | |
| 513 result = 1; | |
| 514 goto done; | |
| 515 } | |
| 516 } | |
| 517 | |
| 518 if (opt_index == cl_options_count) | |
| 519 goto done; | |
| 520 | |
| 521 option = &cl_options[opt_index]; | |
| 522 | |
| 523 /* Reject negative form of switches that don't take negatives as | |
| 524 unrecognized. */ | |
| 525 if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
| 526 goto done; | |
| 527 | |
| 528 /* We've recognized this switch. */ | |
| 529 result = 1; | |
| 530 | |
| 531 /* Check to see if the option is disabled for this configuration. */ | |
| 532 if (option->flags & CL_DISABLED) | |
| 533 { | |
| 534 error ("command line option %qs" | |
| 535 " is not supported by this configuration", opt); | |
| 536 goto done; | |
| 537 } | |
| 538 | |
| 539 /* Sort out any argument the switch takes. */ | |
| 540 if (option->flags & CL_JOINED) | |
| 541 { | |
| 542 /* Have arg point to the original switch. This is because | |
| 543 some code, such as disable_builtin_function, expects its | |
| 544 argument to be persistent until the program exits. */ | |
| 545 arg = argv[0] + cl_options[opt_index].opt_len + 1; | |
| 546 if (!value) | |
| 547 arg += strlen ("no-"); | |
| 548 | |
| 549 if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
| 550 { | |
| 551 if (option->flags & CL_SEPARATE) | |
| 552 { | |
| 553 arg = argv[1]; | |
| 554 result = 2; | |
| 555 } | |
| 556 else | |
| 557 /* Missing argument. */ | |
| 558 arg = NULL; | |
| 559 } | |
| 560 } | |
| 561 else if (option->flags & CL_SEPARATE) | |
| 562 { | |
| 563 arg = argv[1]; | |
| 564 result = 2; | |
| 565 } | |
| 566 | |
| 567 /* Now we've swallowed any potential argument, complain if this | |
| 568 is a switch for a different front end. */ | |
| 569 if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET))) | |
| 570 { | |
| 571 complain_wrong_lang (argv[0], option, lang_mask); | |
| 572 goto done; | |
| 573 } | |
| 574 else if ((option->flags & CL_TARGET) | |
| 575 && (option->flags & CL_LANG_ALL) | |
| 576 && !(option->flags & lang_mask)) | |
| 577 { | |
| 578 /* Complain for target flag language mismatches if any languages | |
| 579 are specified. */ | |
| 580 complain_wrong_lang (argv[0], option, lang_mask); | |
| 581 goto done; | |
| 582 } | |
| 583 | |
| 584 if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE))) | |
| 585 { | |
| 586 if (!lang_hooks.missing_argument (opt, opt_index)) | |
| 587 error ("missing argument to \"%s\"", opt); | |
| 588 goto done; | |
| 589 } | |
| 590 | |
| 591 /* If the switch takes an integer, convert it. */ | |
| 592 if (arg && (option->flags & CL_UINTEGER)) | |
| 593 { | |
| 594 value = integral_argument (arg); | |
| 595 if (value == -1) | |
| 596 { | |
| 597 error ("argument to \"%s\" should be a non-negative integer", | |
| 598 option->opt_text); | |
| 599 goto done; | |
| 600 } | |
| 601 } | |
| 602 | |
| 603 if (option->flag_var) | |
| 604 switch (option->var_type) | |
| 605 { | |
| 606 case CLVC_BOOLEAN: | |
| 607 *(int *) option->flag_var = value; | |
| 608 break; | |
| 609 | |
| 610 case CLVC_EQUAL: | |
| 611 *(int *) option->flag_var = (value | |
| 612 ? option->var_value | |
| 613 : !option->var_value); | |
| 614 break; | |
| 615 | |
| 616 case CLVC_BIT_CLEAR: | |
| 617 case CLVC_BIT_SET: | |
| 618 if ((value != 0) == (option->var_type == CLVC_BIT_SET)) | |
| 619 *(int *) option->flag_var |= option->var_value; | |
| 620 else | |
| 621 *(int *) option->flag_var &= ~option->var_value; | |
| 622 if (option->flag_var == &target_flags) | |
| 623 target_flags_explicit |= option->var_value; | |
| 624 break; | |
| 625 | |
| 626 case CLVC_STRING: | |
| 627 *(const char **) option->flag_var = arg; | |
| 628 break; | |
| 629 } | |
| 630 | |
| 631 if (option->flags & lang_mask) | |
| 632 if (lang_hooks.handle_option (opt_index, arg, value) == 0) | |
| 633 result = 0; | |
| 634 | |
| 635 if (result && (option->flags & CL_COMMON)) | |
| 636 if (common_handle_option (opt_index, arg, value, lang_mask) == 0) | |
| 637 result = 0; | |
| 638 | |
| 639 if (result && (option->flags & CL_TARGET)) | |
| 640 if (!targetm.handle_option (opt_index, arg, value)) | |
| 641 result = 0; | |
| 642 | |
| 643 done: | |
| 644 if (dup) | |
| 645 free (dup); | |
| 646 return result; | |
| 647 } | |
| 648 | |
| 649 /* Handle FILENAME from the command line. */ | |
| 650 static void | |
| 651 add_input_filename (const char *filename) | |
| 652 { | |
| 653 num_in_fnames++; | |
| 654 in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames); | |
| 655 in_fnames[num_in_fnames - 1] = filename; | |
| 656 } | |
| 657 | |
| 658 /* Add comma-separated strings to a char_p vector. */ | |
| 659 | |
| 660 static void | |
| 661 add_comma_separated_to_vector (VEC(char_p,heap) **pvec, const char* arg) | |
| 662 { | |
| 663 char *tmp; | |
| 664 char *r; | |
| 665 char *w; | |
| 666 char *token_start; | |
| 667 | |
| 668 /* We never free this string. */ | |
| 669 tmp = xstrdup (arg); | |
| 670 | |
| 671 r = tmp; | |
| 672 w = tmp; | |
| 673 token_start = tmp; | |
| 674 | |
| 675 while (*r != '\0') | |
| 676 { | |
| 677 if (*r == ',') | |
| 678 { | |
| 679 *w++ = '\0'; | |
| 680 ++r; | |
| 681 VEC_safe_push (char_p, heap, *pvec, token_start); | |
| 682 token_start = w; | |
| 683 } | |
| 684 if (*r == '\\' && r[1] == ',') | |
| 685 { | |
| 686 *w++ = ','; | |
| 687 r += 2; | |
| 688 } | |
| 689 else | |
| 690 *w++ = *r++; | |
| 691 } | |
| 692 if (*token_start != '\0') | |
| 693 VEC_safe_push (char_p, heap, *pvec, token_start); | |
| 694 } | |
| 695 | |
| 696 /* Return whether we should exclude FNDECL from instrumentation. */ | |
| 697 | |
| 698 bool | |
| 699 flag_instrument_functions_exclude_p (tree fndecl) | |
| 700 { | |
| 701 if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0) | |
| 702 { | |
| 703 const char *name; | |
| 704 int i; | |
| 705 char *s; | |
| 706 | |
| 707 name = lang_hooks.decl_printable_name (fndecl, 0); | |
| 708 for (i = 0; | |
| 709 VEC_iterate (char_p, flag_instrument_functions_exclude_functions, | |
| 710 i, s); | |
| 711 ++i) | |
| 712 { | |
| 713 if (strstr (name, s) != NULL) | |
| 714 return true; | |
| 715 } | |
| 716 } | |
| 717 | |
| 718 if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0) | |
| 719 { | |
| 720 const char *name; | |
| 721 int i; | |
| 722 char *s; | |
| 723 | |
| 724 name = DECL_SOURCE_FILE (fndecl); | |
| 725 for (i = 0; | |
| 726 VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s); | |
| 727 ++i) | |
| 728 { | |
| 729 if (strstr (name, s) != NULL) | |
| 730 return true; | |
| 731 } | |
| 732 } | |
| 733 | |
| 734 return false; | |
| 735 } | |
| 736 | |
| 737 | |
| 738 /* Decode and handle the vector of command line options. LANG_MASK | |
| 739 contains has a single bit set representing the current | |
| 740 language. */ | |
| 741 static void | |
| 742 handle_options (unsigned int argc, const char **argv, unsigned int lang_mask) | |
| 743 { | |
| 744 unsigned int n, i; | |
| 745 | |
| 746 for (i = 1; i < argc; i += n) | |
| 747 { | |
| 748 const char *opt = argv[i]; | |
| 749 | |
| 750 /* Interpret "-" or a non-switch as a file name. */ | |
| 751 if (opt[0] != '-' || opt[1] == '\0') | |
| 752 { | |
| 753 if (main_input_filename == NULL) | |
| 754 { | |
| 755 main_input_filename = opt; | |
| 756 main_input_baselength | |
| 757 = base_of_path (main_input_filename, &main_input_basename); | |
| 758 } | |
| 759 add_input_filename (opt); | |
| 760 n = 1; | |
| 761 continue; | |
| 762 } | |
| 763 | |
| 764 n = handle_option (argv + i, lang_mask); | |
| 765 | |
| 766 if (!n) | |
| 767 { | |
| 768 n = 1; | |
| 769 error ("unrecognized command line option \"%s\"", opt); | |
| 770 } | |
| 771 } | |
| 772 } | |
| 773 | |
| 774 /* Parse command line options and set default flag values. Do minimal | |
| 775 options processing. */ | |
| 776 void | |
| 777 decode_options (unsigned int argc, const char **argv) | |
| 778 { | |
| 779 static bool first_time_p = true; | |
| 780 static int initial_max_aliased_vops; | |
| 781 static int initial_avg_aliased_vops; | |
| 782 static int initial_min_crossjump_insns; | |
| 783 static int initial_max_fields_for_field_sensitive; | |
| 784 static int initial_loop_invariant_max_bbs_in_loop; | |
| 785 static unsigned int initial_lang_mask; | |
| 786 | |
| 787 unsigned int i, lang_mask; | |
| 788 int opt1; | |
| 789 int opt2; | |
| 790 int opt3; | |
| 791 int opt1_max; | |
| 792 | |
| 793 if (first_time_p) | |
| 794 { | |
| 795 /* Perform language-specific options initialization. */ | |
| 796 initial_lang_mask = lang_mask = lang_hooks.init_options (argc, argv); | |
| 797 | |
| 798 lang_hooks.initialize_diagnostics (global_dc); | |
| 799 | |
| 800 /* Save initial values of parameters we reset. */ | |
| 801 initial_max_aliased_vops = MAX_ALIASED_VOPS; | |
| 802 initial_avg_aliased_vops = AVG_ALIASED_VOPS; | |
| 803 initial_min_crossjump_insns | |
| 804 = compiler_params[PARAM_MIN_CROSSJUMP_INSNS].value; | |
| 805 initial_max_fields_for_field_sensitive | |
| 806 = compiler_params[PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE].value; | |
| 807 initial_loop_invariant_max_bbs_in_loop | |
| 808 = compiler_params[PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP].value; | |
| 809 } | |
| 810 else | |
| 811 lang_mask = initial_lang_mask; | |
| 812 | |
| 813 /* Scan to see what optimization level has been specified. That will | |
| 814 determine the default value of many flags. */ | |
| 815 for (i = 1; i < argc; i++) | |
| 816 { | |
| 817 if (!strcmp (argv[i], "-O")) | |
| 818 { | |
| 819 optimize = 1; | |
| 820 optimize_size = 0; | |
| 821 } | |
| 822 else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
| 823 { | |
| 824 /* Handle -Os, -O2, -O3, -O69, ... */ | |
| 825 const char *p = &argv[i][2]; | |
| 826 | |
| 827 if ((p[0] == 's') && (p[1] == 0)) | |
| 828 { | |
| 829 optimize_size = 1; | |
| 830 | |
| 831 /* Optimizing for size forces optimize to be 2. */ | |
| 832 optimize = 2; | |
| 833 } | |
| 834 else | |
| 835 { | |
| 836 const int optimize_val = read_integral_parameter (p, p - 2, -1); | |
| 837 if (optimize_val != -1) | |
| 838 { | |
| 839 optimize = optimize_val; | |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
840 if ((unsigned int) optimize > 255) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
841 optimize = 255; |
| 0 | 842 optimize_size = 0; |
| 843 } | |
| 844 } | |
| 845 } | |
| 846 } | |
| 847 | |
| 848 /* Use priority coloring if cover classes is not defined for the | |
| 849 target. */ | |
| 850 if (targetm.ira_cover_classes == NULL) | |
| 851 flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
| 852 | |
| 853 /* -O1 optimizations. */ | |
| 854 opt1 = (optimize >= 1); | |
| 855 flag_defer_pop = opt1; | |
| 856 #ifdef DELAY_SLOTS | |
| 857 flag_delayed_branch = opt1; | |
| 858 #endif | |
| 859 #ifdef CAN_DEBUG_WITHOUT_FP | |
| 860 flag_omit_frame_pointer = opt1; | |
| 861 #endif | |
| 862 flag_guess_branch_prob = opt1; | |
| 863 flag_cprop_registers = opt1; | |
| 864 flag_if_conversion = opt1; | |
| 865 flag_if_conversion2 = opt1; | |
| 866 flag_ipa_pure_const = opt1; | |
| 867 flag_ipa_reference = opt1; | |
| 868 flag_merge_constants = opt1; | |
| 869 flag_split_wide_types = opt1; | |
| 870 flag_tree_ccp = opt1; | |
| 871 flag_tree_dce = opt1; | |
| 872 flag_tree_dom = opt1; | |
| 873 flag_tree_dse = opt1; | |
| 874 flag_tree_ter = opt1; | |
| 875 flag_tree_sra = opt1; | |
| 876 flag_tree_copyrename = opt1; | |
| 877 flag_tree_fre = opt1; | |
| 878 flag_tree_copy_prop = opt1; | |
| 879 flag_tree_sink = opt1; | |
| 880 flag_tree_ch = opt1; | |
| 881 | |
| 882 /* -O2 optimizations. */ | |
| 883 opt2 = (optimize >= 2); | |
| 884 flag_inline_small_functions = opt2; | |
| 885 flag_indirect_inlining = opt2; | |
| 886 flag_thread_jumps = opt2; | |
| 887 flag_crossjumping = opt2; | |
| 888 flag_optimize_sibling_calls = opt2; | |
| 889 flag_forward_propagate = opt2; | |
| 890 flag_cse_follow_jumps = opt2; | |
| 891 flag_gcse = opt2; | |
| 892 flag_expensive_optimizations = opt2; | |
| 893 flag_rerun_cse_after_loop = opt2; | |
| 894 flag_caller_saves = opt2; | |
| 895 flag_peephole2 = opt2; | |
| 896 #ifdef INSN_SCHEDULING | |
| 897 flag_schedule_insns = opt2; | |
| 898 flag_schedule_insns_after_reload = opt2; | |
| 899 #endif | |
| 900 flag_regmove = opt2; | |
| 901 flag_strict_aliasing = opt2; | |
| 902 flag_strict_overflow = opt2; | |
| 903 flag_delete_null_pointer_checks = opt2; | |
| 904 flag_reorder_blocks = opt2; | |
| 905 flag_reorder_functions = opt2; | |
| 906 flag_tree_vrp = opt2; | |
| 907 flag_tree_builtin_call_dce = opt2; | |
| 908 flag_tree_pre = opt2; | |
| 909 flag_tree_switch_conversion = 1; | |
| 910 flag_ipa_cp = opt2; | |
| 911 | |
| 912 /* Allow more virtual operators to increase alias precision. */ | |
| 913 | |
| 914 set_param_value ("max-aliased-vops", | |
| 915 (opt2) ? 500 : initial_max_aliased_vops); | |
| 916 | |
| 917 /* Track fields in field-sensitive alias analysis. */ | |
| 918 set_param_value ("max-fields-for-field-sensitive", | |
| 919 (opt2) ? 100 : initial_max_fields_for_field_sensitive); | |
| 920 | |
| 921 /* For -O1 only do loop invariant motion for very small loops. */ | |
| 922 set_param_value ("loop-invariant-max-bbs-in-loop", | |
| 923 (opt2) ? initial_loop_invariant_max_bbs_in_loop : 1000); | |
| 924 | |
| 925 /* -O3 optimizations. */ | |
| 926 opt3 = (optimize >= 3); | |
| 927 flag_predictive_commoning = opt3; | |
| 928 flag_inline_functions = opt3; | |
| 929 flag_unswitch_loops = opt3; | |
| 930 flag_gcse_after_reload = opt3; | |
| 931 flag_tree_vectorize = opt3; | |
| 932 flag_ipa_cp_clone = opt3; | |
| 933 if (flag_ipa_cp_clone) | |
| 934 flag_ipa_cp = 1; | |
| 935 | |
| 936 /* Allow even more virtual operators. Max-aliased-vops was set above for | |
| 937 -O2, so don't reset it unless we are at -O3. */ | |
| 938 if (opt3) | |
| 939 set_param_value ("max-aliased-vops", 1000); | |
| 940 | |
| 941 set_param_value ("avg-aliased-vops", (opt3) ? 3 : initial_avg_aliased_vops); | |
| 942 | |
| 943 /* Just -O1/-O0 optimizations. */ | |
| 944 opt1_max = (optimize <= 1); | |
| 945 align_loops = opt1_max; | |
| 946 align_jumps = opt1_max; | |
| 947 align_labels = opt1_max; | |
| 948 align_functions = opt1_max; | |
| 949 | |
| 950 if (optimize_size) | |
| 951 { | |
| 952 /* Inlining of functions reducing size is a good idea regardless of them | |
| 953 being declared inline. */ | |
| 954 flag_inline_functions = 1; | |
| 955 | |
| 956 /* Basic optimization options. */ | |
| 957 optimize_size = 1; | |
| 958 if (optimize > 2) | |
| 959 optimize = 2; | |
| 960 | |
| 961 /* We want to crossjump as much as possible. */ | |
| 962 set_param_value ("min-crossjump-insns", 1); | |
| 963 } | |
| 964 else | |
| 965 set_param_value ("min-crossjump-insns", initial_min_crossjump_insns); | |
| 966 | |
| 967 if (first_time_p) | |
| 968 { | |
| 969 /* Initialize whether `char' is signed. */ | |
| 970 flag_signed_char = DEFAULT_SIGNED_CHAR; | |
| 971 /* Set this to a special "uninitialized" value. The actual default is | |
| 972 set after target options have been processed. */ | |
| 973 flag_short_enums = 2; | |
| 974 | |
| 975 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can | |
| 976 modify it. */ | |
| 977 target_flags = targetm.default_target_flags; | |
| 978 | |
| 979 /* Some targets have ABI-specified unwind tables. */ | |
| 980 flag_unwind_tables = targetm.unwind_tables_default; | |
| 981 } | |
| 982 | |
| 983 #ifdef OPTIMIZATION_OPTIONS | |
| 984 /* Allow default optimizations to be specified on a per-machine basis. */ | |
| 985 OPTIMIZATION_OPTIONS (optimize, optimize_size); | |
| 986 #endif | |
| 987 | |
| 988 handle_options (argc, argv, lang_mask); | |
| 989 | |
| 990 /* Handle related options for unit-at-a-time, toplevel-reorder, and | |
| 991 section-anchors. */ | |
| 992 if (!flag_unit_at_a_time) | |
| 993 { | |
| 994 if (flag_section_anchors == 1) | |
| 995 error ("Section anchors must be disabled when unit-at-a-time " | |
| 996 "is disabled."); | |
| 997 flag_section_anchors = 0; | |
| 998 if (flag_toplevel_reorder == 1) | |
| 999 error ("Toplevel reorder must be disabled when unit-at-a-time " | |
| 1000 "is disabled."); | |
| 1001 flag_toplevel_reorder = 0; | |
| 1002 } | |
| 1003 /* Unless the user has asked for section anchors, we disable toplevel | |
| 1004 reordering at -O0 to disable transformations that might be surprising | |
| 1005 to end users and to get -fno-toplevel-reorder tested. */ | |
| 1006 if (!optimize && flag_toplevel_reorder == 2 && flag_section_anchors != 1) | |
| 1007 { | |
| 1008 flag_toplevel_reorder = 0; | |
| 1009 flag_section_anchors = 0; | |
| 1010 } | |
| 1011 if (!flag_toplevel_reorder) | |
| 1012 { | |
| 1013 if (flag_section_anchors == 1) | |
| 1014 error ("section anchors must be disabled when toplevel reorder" | |
| 1015 " is disabled"); | |
| 1016 flag_section_anchors = 0; | |
| 1017 } | |
| 1018 | |
| 1019 if (first_time_p) | |
| 1020 { | |
| 1021 if (flag_pie) | |
| 1022 flag_pic = flag_pie; | |
| 1023 if (flag_pic && !flag_pie) | |
| 1024 flag_shlib = 1; | |
| 1025 } | |
| 1026 | |
| 1027 if (optimize == 0) | |
| 1028 { | |
| 1029 /* Inlining does not work if not optimizing, | |
| 1030 so force it not to be done. */ | |
| 1031 warn_inline = 0; | |
| 1032 flag_no_inline = 1; | |
| 1033 } | |
| 1034 | |
| 1035 /* The optimization to partition hot and cold basic blocks into separate | |
| 1036 sections of the .o and executable files does not work (currently) | |
| 1037 with exception handling. This is because there is no support for | |
| 1038 generating unwind info. If flag_exceptions is turned on we need to | |
| 1039 turn off the partitioning optimization. */ | |
| 1040 | |
| 1041 if (flag_exceptions && flag_reorder_blocks_and_partition) | |
| 1042 { | |
| 1043 inform (input_location, | |
| 1044 "-freorder-blocks-and-partition does not work with exceptions"); | |
| 1045 flag_reorder_blocks_and_partition = 0; | |
| 1046 flag_reorder_blocks = 1; | |
| 1047 } | |
| 1048 | |
| 1049 /* If user requested unwind info, then turn off the partitioning | |
| 1050 optimization. */ | |
| 1051 | |
| 1052 if (flag_unwind_tables && ! targetm.unwind_tables_default | |
| 1053 && flag_reorder_blocks_and_partition) | |
| 1054 { | |
| 1055 inform (input_location, "-freorder-blocks-and-partition does not support unwind info"); | |
| 1056 flag_reorder_blocks_and_partition = 0; | |
| 1057 flag_reorder_blocks = 1; | |
| 1058 } | |
| 1059 | |
| 1060 /* If the target requested unwind info, then turn off the partitioning | |
| 1061 optimization with a different message. Likewise, if the target does not | |
| 1062 support named sections. */ | |
| 1063 | |
| 1064 if (flag_reorder_blocks_and_partition | |
| 1065 && (!targetm.have_named_sections | |
| 1066 || (flag_unwind_tables && targetm.unwind_tables_default))) | |
| 1067 { | |
| 1068 inform (input_location, | |
| 1069 "-freorder-blocks-and-partition does not work on this architecture"); | |
| 1070 flag_reorder_blocks_and_partition = 0; | |
| 1071 flag_reorder_blocks = 1; | |
| 1072 } | |
| 1073 | |
| 1074 /* Pipelining of outer loops is only possible when general pipelining | |
| 1075 capabilities are requested. */ | |
| 1076 if (!flag_sel_sched_pipelining) | |
| 1077 flag_sel_sched_pipelining_outer_loops = 0; | |
| 1078 | |
| 1079 if (!targetm.ira_cover_classes | |
| 1080 && flag_ira_algorithm == IRA_ALGORITHM_CB) | |
| 1081 { | |
| 1082 inform (input_location, | |
| 1083 "-fira-algorithm=CB does not work on this architecture"); | |
| 1084 flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
| 1085 } | |
| 1086 | |
| 1087 /* Save the current optimization options if this is the first call. */ | |
| 1088 if (first_time_p) | |
| 1089 { | |
| 1090 optimization_default_node = build_optimization_node (); | |
| 1091 optimization_current_node = optimization_default_node; | |
| 1092 first_time_p = false; | |
| 1093 } | |
| 1094 if (flag_conserve_stack) | |
| 1095 { | |
| 1096 if (!PARAM_SET_P (PARAM_LARGE_STACK_FRAME)) | |
| 1097 PARAM_VALUE (PARAM_LARGE_STACK_FRAME) = 100; | |
| 1098 if (!PARAM_SET_P (PARAM_STACK_FRAME_GROWTH)) | |
| 1099 PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40; | |
| 1100 } | |
| 1101 | |
| 1102 } | |
| 1103 | |
| 1104 #define LEFT_COLUMN 27 | |
| 1105 | |
| 1106 /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
| 1107 followed by word-wrapped HELP in a second column. */ | |
| 1108 static void | |
| 1109 wrap_help (const char *help, | |
| 1110 const char *item, | |
| 1111 unsigned int item_width, | |
| 1112 unsigned int columns) | |
| 1113 { | |
| 1114 unsigned int col_width = LEFT_COLUMN; | |
| 1115 unsigned int remaining, room, len; | |
| 1116 | |
| 1117 remaining = strlen (help); | |
| 1118 | |
| 1119 do | |
| 1120 { | |
| 1121 room = columns - 3 - MAX (col_width, item_width); | |
| 1122 if (room > columns) | |
| 1123 room = 0; | |
| 1124 len = remaining; | |
| 1125 | |
| 1126 if (room < len) | |
| 1127 { | |
| 1128 unsigned int i; | |
| 1129 | |
| 1130 for (i = 0; help[i]; i++) | |
| 1131 { | |
| 1132 if (i >= room && len != remaining) | |
| 1133 break; | |
| 1134 if (help[i] == ' ') | |
| 1135 len = i; | |
| 1136 else if ((help[i] == '-' || help[i] == '/') | |
| 1137 && help[i + 1] != ' ' | |
| 1138 && i > 0 && ISALPHA (help[i - 1])) | |
| 1139 len = i + 1; | |
| 1140 } | |
| 1141 } | |
| 1142 | |
| 1143 printf( " %-*.*s %.*s\n", col_width, item_width, item, len, help); | |
| 1144 item_width = 0; | |
| 1145 while (help[len] == ' ') | |
| 1146 len++; | |
| 1147 help += len; | |
| 1148 remaining -= len; | |
| 1149 } | |
| 1150 while (remaining); | |
| 1151 } | |
| 1152 | |
| 1153 /* Print help for a specific front-end, etc. */ | |
| 1154 static void | |
| 1155 print_filtered_help (unsigned int include_flags, | |
| 1156 unsigned int exclude_flags, | |
| 1157 unsigned int any_flags, | |
| 1158 unsigned int columns) | |
| 1159 { | |
| 1160 unsigned int i; | |
| 1161 const char *help; | |
| 1162 static char *printed = NULL; | |
| 1163 bool found = false; | |
| 1164 bool displayed = false; | |
| 1165 | |
| 1166 if (include_flags == CL_PARAMS) | |
| 1167 { | |
| 1168 for (i = 0; i < LAST_PARAM; i++) | |
| 1169 { | |
| 1170 const char *param = compiler_params[i].option; | |
| 1171 | |
| 1172 help = compiler_params[i].help; | |
| 1173 if (help == NULL || *help == '\0') | |
| 1174 { | |
| 1175 if (exclude_flags & CL_UNDOCUMENTED) | |
| 1176 continue; | |
| 1177 help = undocumented_msg; | |
| 1178 } | |
| 1179 | |
| 1180 /* Get the translation. */ | |
| 1181 help = _(help); | |
| 1182 | |
| 1183 wrap_help (help, param, strlen (param), columns); | |
| 1184 } | |
| 1185 putchar ('\n'); | |
| 1186 return; | |
| 1187 } | |
| 1188 | |
| 1189 if (!printed) | |
| 1190 printed = XCNEWVAR (char, cl_options_count); | |
| 1191 | |
| 1192 for (i = 0; i < cl_options_count; i++) | |
| 1193 { | |
| 1194 static char new_help[128]; | |
| 1195 const struct cl_option *option = cl_options + i; | |
| 1196 unsigned int len; | |
| 1197 const char *opt; | |
| 1198 const char *tab; | |
| 1199 | |
| 1200 if (include_flags == 0 | |
| 1201 || ((option->flags & include_flags) != include_flags)) | |
| 1202 { | |
| 1203 if ((option->flags & any_flags) == 0) | |
| 1204 continue; | |
| 1205 } | |
| 1206 | |
| 1207 /* Skip unwanted switches. */ | |
| 1208 if ((option->flags & exclude_flags) != 0) | |
| 1209 continue; | |
| 1210 | |
| 1211 found = true; | |
| 1212 /* Skip switches that have already been printed. */ | |
| 1213 if (printed[i]) | |
| 1214 continue; | |
| 1215 | |
| 1216 printed[i] = true; | |
| 1217 | |
| 1218 help = option->help; | |
| 1219 if (help == NULL) | |
| 1220 { | |
| 1221 if (exclude_flags & CL_UNDOCUMENTED) | |
| 1222 continue; | |
| 1223 help = undocumented_msg; | |
| 1224 } | |
| 1225 | |
| 1226 /* Get the translation. */ | |
| 1227 help = _(help); | |
| 1228 | |
| 1229 /* Find the gap between the name of the | |
| 1230 option and its descriptive text. */ | |
| 1231 tab = strchr (help, '\t'); | |
| 1232 if (tab) | |
| 1233 { | |
| 1234 len = tab - help; | |
| 1235 opt = help; | |
| 1236 help = tab + 1; | |
| 1237 } | |
| 1238 else | |
| 1239 { | |
| 1240 opt = option->opt_text; | |
| 1241 len = strlen (opt); | |
| 1242 } | |
| 1243 | |
| 1244 /* With the -Q option enabled we change the descriptive text associated | |
| 1245 with an option to be an indication of its current setting. */ | |
| 1246 if (!quiet_flag) | |
| 1247 { | |
| 1248 if (len < (LEFT_COLUMN + 2)) | |
| 1249 strcpy (new_help, "\t\t"); | |
| 1250 else | |
| 1251 strcpy (new_help, "\t"); | |
| 1252 | |
| 1253 if (option->flag_var != NULL) | |
| 1254 { | |
| 1255 if (option->flags & CL_JOINED) | |
| 1256 { | |
| 1257 if (option->var_type == CLVC_STRING) | |
| 1258 { | |
| 1259 if (* (const char **) option->flag_var != NULL) | |
| 1260 snprintf (new_help + strlen (new_help), | |
| 1261 sizeof (new_help) - strlen (new_help), | |
| 1262 * (const char **) option->flag_var); | |
| 1263 } | |
| 1264 else | |
| 1265 sprintf (new_help + strlen (new_help), | |
| 1266 "%#x", * (int *) option->flag_var); | |
| 1267 } | |
| 1268 else | |
| 1269 strcat (new_help, option_enabled (i) | |
| 1270 ? _("[enabled]") : _("[disabled]")); | |
| 1271 } | |
| 1272 | |
| 1273 help = new_help; | |
| 1274 } | |
| 1275 | |
| 1276 wrap_help (help, opt, len, columns); | |
| 1277 displayed = true; | |
| 1278 } | |
| 1279 | |
| 1280 if (! found) | |
| 1281 { | |
| 1282 unsigned int langs = include_flags & CL_LANG_ALL; | |
| 1283 | |
| 1284 if (langs == 0) | |
| 1285 printf (_(" No options with the desired characteristics were found\n")); | |
| 1286 else | |
| 1287 { | |
| 1288 unsigned int i; | |
| 1289 | |
| 1290 /* PR 31349: Tell the user how to see all of the | |
| 1291 options supported by a specific front end. */ | |
| 1292 for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
| 1293 if ((1U << i) & langs) | |
| 1294 printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
| 1295 lang_names[i], lang_names[i]); | |
| 1296 } | |
| 1297 | |
| 1298 } | |
| 1299 else if (! displayed) | |
| 1300 printf (_(" All options with the desired characteristics have already been displayed\n")); | |
| 1301 | |
| 1302 putchar ('\n'); | |
| 1303 } | |
| 1304 | |
| 1305 /* Display help for a specified type of option. | |
| 1306 The options must have ALL of the INCLUDE_FLAGS set | |
| 1307 ANY of the flags in the ANY_FLAGS set | |
| 1308 and NONE of the EXCLUDE_FLAGS set. */ | |
| 1309 static void | |
| 1310 print_specific_help (unsigned int include_flags, | |
| 1311 unsigned int exclude_flags, | |
| 1312 unsigned int any_flags) | |
| 1313 { | |
| 1314 unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
| 1315 const char * description = NULL; | |
| 1316 const char * descrip_extra = ""; | |
| 1317 size_t i; | |
| 1318 unsigned int flag; | |
| 1319 static unsigned int columns = 0; | |
| 1320 | |
| 1321 /* Sanity check: Make sure that we do not have more | |
| 1322 languages than we have bits available to enumerate them. */ | |
| 1323 gcc_assert ((1U << cl_lang_count) < CL_MIN_OPTION_CLASS); | |
| 1324 | |
| 1325 /* If we have not done so already, obtain | |
| 1326 the desired maximum width of the output. */ | |
| 1327 if (columns == 0) | |
| 1328 { | |
| 1329 const char *p; | |
| 1330 | |
| 1331 GET_ENVIRONMENT (p, "COLUMNS"); | |
| 1332 if (p != NULL) | |
| 1333 { | |
| 1334 int value = atoi (p); | |
| 1335 | |
| 1336 if (value > 0) | |
| 1337 columns = value; | |
| 1338 } | |
| 1339 | |
| 1340 if (columns == 0) | |
| 1341 /* Use a reasonable default. */ | |
| 1342 columns = 80; | |
| 1343 } | |
| 1344 | |
| 1345 /* Decide upon the title for the options that we are going to display. */ | |
| 1346 for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
| 1347 { | |
| 1348 switch (flag & include_flags) | |
| 1349 { | |
| 1350 case 0: | |
| 1351 break; | |
| 1352 | |
| 1353 case CL_TARGET: | |
| 1354 description = _("The following options are target specific"); | |
| 1355 break; | |
| 1356 case CL_WARNING: | |
| 1357 description = _("The following options control compiler warning messages"); | |
| 1358 break; | |
| 1359 case CL_OPTIMIZATION: | |
| 1360 description = _("The following options control optimizations"); | |
| 1361 break; | |
| 1362 case CL_COMMON: | |
| 1363 description = _("The following options are language-independent"); | |
| 1364 break; | |
| 1365 case CL_PARAMS: | |
| 1366 description = _("The --param option recognizes the following as parameters"); | |
| 1367 break; | |
| 1368 default: | |
| 1369 if (i >= cl_lang_count) | |
| 1370 break; | |
| 1371 if (exclude_flags & all_langs_mask) | |
| 1372 description = _("The following options are specific to just the language "); | |
| 1373 else | |
| 1374 description = _("The following options are supported by the language "); | |
| 1375 descrip_extra = lang_names [i]; | |
| 1376 break; | |
| 1377 } | |
| 1378 } | |
| 1379 | |
| 1380 if (description == NULL) | |
| 1381 { | |
| 1382 if (any_flags == 0) | |
| 1383 { | |
| 1384 if (include_flags & CL_UNDOCUMENTED) | |
| 1385 description = _("The following options are not documented"); | |
| 1386 else if (include_flags & CL_SEPARATE) | |
| 1387 description = _("The following options take separate arguments"); | |
| 1388 else if (include_flags & CL_JOINED) | |
| 1389 description = _("The following options take joined arguments"); | |
| 1390 else | |
| 1391 { | |
| 1392 internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
| 1393 include_flags); | |
| 1394 return; | |
| 1395 } | |
| 1396 } | |
| 1397 else | |
| 1398 { | |
| 1399 if (any_flags & all_langs_mask) | |
| 1400 description = _("The following options are language-related"); | |
| 1401 else | |
| 1402 description = _("The following options are language-independent"); | |
| 1403 } | |
| 1404 } | |
| 1405 | |
| 1406 printf ("%s%s:\n", description, descrip_extra); | |
| 1407 print_filtered_help (include_flags, exclude_flags, any_flags, columns); | |
| 1408 } | |
| 1409 | |
| 1410 /* Handle target- and language-independent options. Return zero to | |
| 1411 generate an "unknown option" message. Only options that need | |
| 1412 extra handling need to be listed here; if you simply want | |
| 1413 VALUE assigned to a variable, it happens automatically. */ | |
| 1414 | |
| 1415 static int | |
| 1416 common_handle_option (size_t scode, const char *arg, int value, | |
| 1417 unsigned int lang_mask) | |
| 1418 { | |
| 1419 static bool verbose = false; | |
| 1420 enum opt_code code = (enum opt_code) scode; | |
| 1421 | |
| 1422 switch (code) | |
| 1423 { | |
| 1424 case OPT__param: | |
| 1425 handle_param (arg); | |
| 1426 break; | |
| 1427 | |
| 1428 case OPT_v: | |
| 1429 verbose = true; | |
| 1430 break; | |
| 1431 | |
| 1432 case OPT_fhelp: | |
| 1433 case OPT__help: | |
| 1434 { | |
| 1435 unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
| 1436 unsigned int undoc_mask; | |
| 1437 unsigned int i; | |
| 1438 | |
| 1439 undoc_mask = (verbose | extra_warnings) ? 0 : CL_UNDOCUMENTED; | |
| 1440 /* First display any single language specific options. */ | |
| 1441 for (i = 0; i < cl_lang_count; i++) | |
| 1442 print_specific_help | |
| 1443 (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0); | |
| 1444 /* Next display any multi language specific options. */ | |
| 1445 print_specific_help (0, undoc_mask, all_langs_mask); | |
| 1446 /* Then display any remaining, non-language options. */ | |
| 1447 for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
| 1448 print_specific_help (i, undoc_mask, 0); | |
| 1449 exit_after_options = true; | |
| 1450 break; | |
| 1451 } | |
| 1452 | |
| 1453 case OPT_ftarget_help: | |
| 1454 case OPT__target_help: | |
| 1455 print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0); | |
| 1456 exit_after_options = true; | |
| 1457 | |
| 1458 /* Allow the target a chance to give the user some additional information. */ | |
| 1459 if (targetm.target_help) | |
| 1460 targetm.target_help (); | |
| 1461 break; | |
| 1462 | |
| 1463 case OPT_fhelp_: | |
| 1464 case OPT__help_: | |
| 1465 { | |
| 1466 const char * a = arg; | |
| 1467 unsigned int include_flags = 0; | |
| 1468 /* Note - by default we include undocumented options when listing | |
| 1469 specific classes. If you only want to see documented options | |
| 1470 then add ",^undocumented" to the --help= option. E.g.: | |
| 1471 | |
| 1472 --help=target,^undocumented */ | |
| 1473 unsigned int exclude_flags = 0; | |
| 1474 | |
| 1475 /* Walk along the argument string, parsing each word in turn. | |
| 1476 The format is: | |
| 1477 arg = [^]{word}[,{arg}] | |
| 1478 word = {optimizers|target|warnings|undocumented| | |
| 1479 params|common|<language>} */ | |
| 1480 while (* a != 0) | |
| 1481 { | |
| 1482 static struct | |
| 1483 { | |
| 1484 const char * string; | |
| 1485 unsigned int flag; | |
| 1486 } | |
| 1487 specifics[] = | |
| 1488 { | |
| 1489 { "optimizers", CL_OPTIMIZATION }, | |
| 1490 { "target", CL_TARGET }, | |
| 1491 { "warnings", CL_WARNING }, | |
| 1492 { "undocumented", CL_UNDOCUMENTED }, | |
| 1493 { "params", CL_PARAMS }, | |
| 1494 { "joined", CL_JOINED }, | |
| 1495 { "separate", CL_SEPARATE }, | |
| 1496 { "common", CL_COMMON }, | |
| 1497 { NULL, 0 } | |
| 1498 }; | |
| 1499 unsigned int * pflags; | |
| 1500 char * comma; | |
| 1501 unsigned int lang_flag, specific_flag; | |
| 1502 unsigned int len; | |
| 1503 unsigned int i; | |
| 1504 | |
| 1505 if (* a == '^') | |
| 1506 { | |
| 1507 ++ a; | |
| 1508 pflags = & exclude_flags; | |
| 1509 } | |
| 1510 else | |
| 1511 pflags = & include_flags; | |
| 1512 | |
| 1513 comma = strchr (a, ','); | |
| 1514 if (comma == NULL) | |
| 1515 len = strlen (a); | |
| 1516 else | |
| 1517 len = comma - a; | |
| 1518 if (len == 0) | |
| 1519 { | |
| 1520 a = comma + 1; | |
| 1521 continue; | |
| 1522 } | |
| 1523 | |
| 1524 /* Check to see if the string matches an option class name. */ | |
| 1525 for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
| 1526 if (strncasecmp (a, specifics[i].string, len) == 0) | |
| 1527 { | |
| 1528 specific_flag = specifics[i].flag; | |
| 1529 break; | |
| 1530 } | |
| 1531 | |
| 1532 /* Check to see if the string matches a language name. | |
| 1533 Note - we rely upon the alpha-sorted nature of the entries in | |
| 1534 the lang_names array, specifically that shorter names appear | |
| 1535 before their longer variants. (i.e. C before C++). That way | |
| 1536 when we are attempting to match --help=c for example we will | |
| 1537 match with C first and not C++. */ | |
| 1538 for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
| 1539 if (strncasecmp (a, lang_names[i], len) == 0) | |
| 1540 { | |
| 1541 lang_flag = 1U << i; | |
| 1542 break; | |
| 1543 } | |
| 1544 | |
| 1545 if (specific_flag != 0) | |
| 1546 { | |
| 1547 if (lang_flag == 0) | |
| 1548 * pflags |= specific_flag; | |
| 1549 else | |
| 1550 { | |
| 1551 /* The option's argument matches both the start of a | |
| 1552 language name and the start of an option class name. | |
| 1553 We have a special case for when the user has | |
| 1554 specified "--help=c", but otherwise we have to issue | |
| 1555 a warning. */ | |
| 1556 if (strncasecmp (a, "c", len) == 0) | |
| 1557 * pflags |= lang_flag; | |
| 1558 else | |
| 1559 fnotice (stderr, | |
| 1560 "warning: --help argument %.*s is ambiguous, please be more specific\n", | |
| 1561 len, a); | |
| 1562 } | |
| 1563 } | |
| 1564 else if (lang_flag != 0) | |
| 1565 * pflags |= lang_flag; | |
| 1566 else | |
| 1567 fnotice (stderr, | |
| 1568 "warning: unrecognized argument to --help= option: %.*s\n", | |
| 1569 len, a); | |
| 1570 | |
| 1571 if (comma == NULL) | |
| 1572 break; | |
| 1573 a = comma + 1; | |
| 1574 } | |
| 1575 | |
| 1576 if (include_flags) | |
| 1577 print_specific_help (include_flags, exclude_flags, 0); | |
| 1578 exit_after_options = true; | |
| 1579 break; | |
| 1580 } | |
| 1581 | |
| 1582 case OPT__version: | |
| 1583 print_version (stderr, ""); | |
| 1584 exit_after_options = true; | |
| 1585 break; | |
| 1586 | |
| 1587 case OPT_G: | |
| 1588 g_switch_value = value; | |
| 1589 g_switch_set = true; | |
| 1590 break; | |
| 1591 | |
| 1592 case OPT_O: | |
| 1593 case OPT_Os: | |
| 1594 /* Currently handled in a prescan. */ | |
| 1595 break; | |
| 1596 | |
| 1597 case OPT_W: | |
| 1598 /* For backward compatibility, -W is the same as -Wextra. */ | |
| 1599 set_Wextra (value); | |
| 1600 break; | |
| 1601 | |
| 1602 case OPT_Werror_: | |
| 1603 enable_warning_as_error (arg, value, lang_mask); | |
| 1604 break; | |
| 1605 | |
| 1606 case OPT_Wextra: | |
| 1607 set_Wextra (value); | |
| 1608 break; | |
| 1609 | |
| 1610 case OPT_Wlarger_than_: | |
| 1611 /* This form corresponds to -Wlarger-than-. | |
| 1612 Kept for backward compatibility. | |
| 1613 Don't use it as the first argument of warning(). */ | |
| 1614 | |
| 1615 case OPT_Wlarger_than_eq: | |
| 1616 larger_than_size = value; | |
| 1617 warn_larger_than = value != -1; | |
| 1618 break; | |
| 1619 | |
| 1620 case OPT_Wframe_larger_than_: | |
| 1621 frame_larger_than_size = value; | |
| 1622 warn_frame_larger_than = value != -1; | |
| 1623 break; | |
| 1624 | |
| 1625 case OPT_Wstrict_aliasing: | |
| 1626 set_Wstrict_aliasing (value); | |
| 1627 break; | |
| 1628 | |
| 1629 case OPT_Wstrict_aliasing_: | |
| 1630 warn_strict_aliasing = value; | |
| 1631 break; | |
| 1632 | |
| 1633 case OPT_Wstrict_overflow: | |
| 1634 warn_strict_overflow = (value | |
| 1635 ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
| 1636 : 0); | |
| 1637 break; | |
| 1638 | |
| 1639 case OPT_Wstrict_overflow_: | |
| 1640 warn_strict_overflow = value; | |
| 1641 break; | |
| 1642 | |
| 1643 case OPT_Wunused: | |
| 1644 warn_unused = value; | |
| 1645 break; | |
| 1646 | |
| 1647 case OPT_aux_info: | |
| 1648 case OPT_aux_info_: | |
| 1649 aux_info_file_name = arg; | |
| 1650 flag_gen_aux_info = 1; | |
| 1651 break; | |
| 1652 | |
| 1653 case OPT_auxbase: | |
| 1654 aux_base_name = arg; | |
| 1655 break; | |
| 1656 | |
| 1657 case OPT_auxbase_strip: | |
| 1658 { | |
| 1659 char *tmp = xstrdup (arg); | |
| 1660 strip_off_ending (tmp, strlen (tmp)); | |
| 1661 if (tmp[0]) | |
| 1662 aux_base_name = tmp; | |
| 1663 } | |
| 1664 break; | |
| 1665 | |
| 1666 case OPT_d: | |
| 1667 decode_d_option (arg); | |
| 1668 break; | |
| 1669 | |
| 1670 case OPT_dumpbase: | |
| 1671 dump_base_name = arg; | |
| 1672 break; | |
| 1673 | |
| 1674 case OPT_falign_functions_: | |
| 1675 align_functions = value; | |
| 1676 break; | |
| 1677 | |
| 1678 case OPT_falign_jumps_: | |
| 1679 align_jumps = value; | |
| 1680 break; | |
| 1681 | |
| 1682 case OPT_falign_labels_: | |
| 1683 align_labels = value; | |
| 1684 break; | |
| 1685 | |
| 1686 case OPT_falign_loops_: | |
| 1687 align_loops = value; | |
| 1688 break; | |
| 1689 | |
| 1690 case OPT_fbranch_probabilities: | |
| 1691 flag_branch_probabilities_set = true; | |
| 1692 break; | |
| 1693 | |
| 1694 case OPT_fcall_used_: | |
| 1695 fix_register (arg, 0, 1); | |
| 1696 break; | |
| 1697 | |
| 1698 case OPT_fcall_saved_: | |
| 1699 fix_register (arg, 0, 0); | |
| 1700 break; | |
| 1701 | |
| 1702 case OPT_fdbg_cnt_: | |
| 1703 dbg_cnt_process_opt (arg); | |
| 1704 break; | |
| 1705 | |
| 1706 case OPT_fdbg_cnt_list: | |
| 1707 dbg_cnt_list_all_counters (); | |
| 1708 break; | |
| 1709 | |
| 1710 case OPT_fdebug_prefix_map_: | |
| 1711 add_debug_prefix_map (arg); | |
| 1712 break; | |
| 1713 | |
| 1714 case OPT_fdiagnostics_show_location_: | |
| 1715 if (!strcmp (arg, "once")) | |
| 1716 diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
| 1717 else if (!strcmp (arg, "every-line")) | |
| 1718 diagnostic_prefixing_rule (global_dc) | |
| 1719 = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
| 1720 else | |
| 1721 return 0; | |
| 1722 break; | |
| 1723 | |
| 1724 case OPT_fdiagnostics_show_option: | |
| 1725 global_dc->show_option_requested = true; | |
| 1726 break; | |
| 1727 | |
| 1728 case OPT_fdump_: | |
| 1729 if (!dump_switch_p (arg)) | |
| 1730 return 0; | |
| 1731 break; | |
| 1732 | |
| 1733 case OPT_ffast_math: | |
| 1734 set_fast_math_flags (value); | |
| 1735 break; | |
| 1736 | |
| 1737 case OPT_funsafe_math_optimizations: | |
| 1738 set_unsafe_math_optimizations_flags (value); | |
| 1739 break; | |
| 1740 | |
| 1741 case OPT_ffixed_: | |
| 1742 fix_register (arg, 1, 1); | |
| 1743 break; | |
| 1744 | |
| 1745 case OPT_finline_limit_: | |
| 1746 case OPT_finline_limit_eq: | |
| 1747 set_param_value ("max-inline-insns-single", value / 2); | |
| 1748 set_param_value ("max-inline-insns-auto", value / 2); | |
| 1749 break; | |
| 1750 | |
| 1751 case OPT_finstrument_functions_exclude_function_list_: | |
| 1752 add_comma_separated_to_vector | |
| 1753 (&flag_instrument_functions_exclude_functions, arg); | |
| 1754 break; | |
| 1755 | |
| 1756 case OPT_finstrument_functions_exclude_file_list_: | |
| 1757 add_comma_separated_to_vector | |
| 1758 (&flag_instrument_functions_exclude_files, arg); | |
| 1759 break; | |
| 1760 | |
| 1761 case OPT_fmessage_length_: | |
| 1762 pp_set_line_maximum_length (global_dc->printer, value); | |
| 1763 break; | |
| 1764 | |
| 1765 case OPT_fpack_struct_: | |
| 1766 if (value <= 0 || (value & (value - 1)) || value > 16) | |
| 1767 error ("structure alignment must be a small power of two, not %d", value); | |
| 1768 else | |
| 1769 { | |
| 1770 initial_max_fld_align = value; | |
| 1771 maximum_field_alignment = value * BITS_PER_UNIT; | |
| 1772 } | |
| 1773 break; | |
| 1774 | |
| 1775 case OPT_fpeel_loops: | |
| 1776 flag_peel_loops_set = true; | |
| 1777 break; | |
| 1778 | |
| 1779 case OPT_fprofile_arcs: | |
| 1780 profile_arc_flag_set = true; | |
| 1781 break; | |
| 1782 | |
| 1783 case OPT_finline_functions: | |
| 1784 flag_inline_functions_set = true; | |
| 1785 break; | |
| 1786 | |
| 1787 case OPT_fprofile_dir_: | |
| 1788 profile_data_prefix = xstrdup (arg); | |
| 1789 break; | |
| 1790 | |
| 1791 case OPT_fprofile_use_: | |
| 1792 profile_data_prefix = xstrdup (arg); | |
| 1793 flag_profile_use = true; | |
| 1794 value = true; | |
| 1795 /* No break here - do -fprofile-use processing. */ | |
| 1796 case OPT_fprofile_use: | |
| 1797 if (!flag_branch_probabilities_set) | |
| 1798 flag_branch_probabilities = value; | |
| 1799 if (!flag_profile_values_set) | |
| 1800 flag_profile_values = value; | |
| 1801 if (!flag_unroll_loops_set) | |
| 1802 flag_unroll_loops = value; | |
| 1803 if (!flag_peel_loops_set) | |
| 1804 flag_peel_loops = value; | |
| 1805 if (!flag_tracer_set) | |
| 1806 flag_tracer = value; | |
| 1807 if (!flag_value_profile_transformations_set) | |
| 1808 flag_value_profile_transformations = value; | |
| 1809 if (!flag_inline_functions_set) | |
| 1810 flag_inline_functions = value; | |
| 1811 if (!flag_ipa_cp_set) | |
| 1812 flag_ipa_cp = value; | |
| 1813 if (!flag_ipa_cp_clone_set | |
| 1814 && value && flag_ipa_cp) | |
| 1815 flag_ipa_cp_clone = value; | |
| 1816 if (!flag_predictive_commoning_set) | |
| 1817 flag_predictive_commoning = value; | |
| 1818 if (!flag_unswitch_loops_set) | |
| 1819 flag_unswitch_loops = value; | |
| 1820 if (!flag_gcse_after_reload_set) | |
| 1821 flag_gcse_after_reload = value; | |
| 1822 break; | |
| 1823 | |
| 1824 case OPT_fprofile_generate_: | |
| 1825 profile_data_prefix = xstrdup (arg); | |
| 1826 value = true; | |
| 1827 /* No break here - do -fprofile-generate processing. */ | |
| 1828 case OPT_fprofile_generate: | |
| 1829 if (!profile_arc_flag_set) | |
| 1830 profile_arc_flag = value; | |
| 1831 if (!flag_profile_values_set) | |
| 1832 flag_profile_values = value; | |
| 1833 if (!flag_value_profile_transformations_set) | |
| 1834 flag_value_profile_transformations = value; | |
| 1835 if (!flag_inline_functions_set) | |
| 1836 flag_inline_functions = value; | |
| 1837 break; | |
| 1838 | |
| 1839 case OPT_fprofile_values: | |
| 1840 flag_profile_values_set = true; | |
| 1841 break; | |
| 1842 | |
| 1843 case OPT_fvisibility_: | |
| 1844 { | |
| 1845 if (!strcmp(arg, "default")) | |
| 1846 default_visibility = VISIBILITY_DEFAULT; | |
| 1847 else if (!strcmp(arg, "internal")) | |
| 1848 default_visibility = VISIBILITY_INTERNAL; | |
| 1849 else if (!strcmp(arg, "hidden")) | |
| 1850 default_visibility = VISIBILITY_HIDDEN; | |
| 1851 else if (!strcmp(arg, "protected")) | |
| 1852 default_visibility = VISIBILITY_PROTECTED; | |
| 1853 else | |
| 1854 error ("unrecognized visibility value \"%s\"", arg); | |
| 1855 } | |
| 1856 break; | |
| 1857 | |
| 1858 case OPT_fvpt: | |
| 1859 flag_value_profile_transformations_set = true; | |
| 1860 break; | |
| 1861 | |
| 1862 case OPT_frandom_seed: | |
| 1863 /* The real switch is -fno-random-seed. */ | |
| 1864 if (value) | |
| 1865 return 0; | |
| 1866 set_random_seed (NULL); | |
| 1867 break; | |
| 1868 | |
| 1869 case OPT_frandom_seed_: | |
| 1870 set_random_seed (arg); | |
| 1871 break; | |
| 1872 | |
| 1873 case OPT_fselective_scheduling: | |
| 1874 case OPT_fselective_scheduling2: | |
| 1875 sel_sched_switch_set = true; | |
| 1876 break; | |
| 1877 | |
| 1878 case OPT_fsched_verbose_: | |
| 1879 #ifdef INSN_SCHEDULING | |
| 1880 fix_sched_param ("verbose", arg); | |
| 1881 break; | |
| 1882 #else | |
| 1883 return 0; | |
| 1884 #endif | |
| 1885 | |
| 1886 case OPT_fsched_stalled_insns_: | |
| 1887 flag_sched_stalled_insns = value; | |
| 1888 if (flag_sched_stalled_insns == 0) | |
| 1889 flag_sched_stalled_insns = -1; | |
| 1890 break; | |
| 1891 | |
| 1892 case OPT_fsched_stalled_insns_dep_: | |
| 1893 flag_sched_stalled_insns_dep = value; | |
| 1894 break; | |
| 1895 | |
| 1896 case OPT_fstack_check_: | |
| 1897 if (!strcmp (arg, "no")) | |
| 1898 flag_stack_check = NO_STACK_CHECK; | |
| 1899 else if (!strcmp (arg, "generic")) | |
| 1900 /* This is the old stack checking method. */ | |
| 1901 flag_stack_check = STACK_CHECK_BUILTIN | |
| 1902 ? FULL_BUILTIN_STACK_CHECK | |
| 1903 : GENERIC_STACK_CHECK; | |
| 1904 else if (!strcmp (arg, "specific")) | |
| 1905 /* This is the new stack checking method. */ | |
| 1906 flag_stack_check = STACK_CHECK_BUILTIN | |
| 1907 ? FULL_BUILTIN_STACK_CHECK | |
| 1908 : STACK_CHECK_STATIC_BUILTIN | |
| 1909 ? STATIC_BUILTIN_STACK_CHECK | |
| 1910 : GENERIC_STACK_CHECK; | |
| 1911 else | |
| 1912 warning (0, "unknown stack check parameter \"%s\"", arg); | |
| 1913 break; | |
| 1914 | |
| 1915 case OPT_fstack_check: | |
| 1916 /* This is the same as the "specific" mode above. */ | |
| 1917 if (value) | |
| 1918 flag_stack_check = STACK_CHECK_BUILTIN | |
| 1919 ? FULL_BUILTIN_STACK_CHECK | |
| 1920 : STACK_CHECK_STATIC_BUILTIN | |
| 1921 ? STATIC_BUILTIN_STACK_CHECK | |
| 1922 : GENERIC_STACK_CHECK; | |
| 1923 else | |
| 1924 flag_stack_check = NO_STACK_CHECK; | |
| 1925 break; | |
| 1926 | |
| 1927 case OPT_fstack_limit: | |
| 1928 /* The real switch is -fno-stack-limit. */ | |
| 1929 if (value) | |
| 1930 return 0; | |
| 1931 stack_limit_rtx = NULL_RTX; | |
| 1932 break; | |
| 1933 | |
| 1934 case OPT_fstack_limit_register_: | |
| 1935 { | |
| 1936 int reg = decode_reg_name (arg); | |
| 1937 if (reg < 0) | |
| 1938 error ("unrecognized register name \"%s\"", arg); | |
| 1939 else | |
| 1940 stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
| 1941 } | |
| 1942 break; | |
| 1943 | |
| 1944 case OPT_fstack_limit_symbol_: | |
| 1945 stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (arg)); | |
| 1946 break; | |
| 1947 | |
| 1948 case OPT_ftree_vectorizer_verbose_: | |
| 1949 vect_set_verbosity_level (arg); | |
| 1950 break; | |
| 1951 | |
| 1952 case OPT_ftls_model_: | |
| 1953 if (!strcmp (arg, "global-dynamic")) | |
| 1954 flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
| 1955 else if (!strcmp (arg, "local-dynamic")) | |
| 1956 flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
| 1957 else if (!strcmp (arg, "initial-exec")) | |
| 1958 flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
| 1959 else if (!strcmp (arg, "local-exec")) | |
| 1960 flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
| 1961 else | |
| 1962 warning (0, "unknown tls-model \"%s\"", arg); | |
| 1963 break; | |
| 1964 | |
| 1965 case OPT_fira_algorithm_: | |
| 1966 if (!strcmp (arg, "CB")) | |
| 1967 flag_ira_algorithm = IRA_ALGORITHM_CB; | |
| 1968 else if (!strcmp (arg, "priority")) | |
| 1969 flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
| 1970 else | |
| 1971 warning (0, "unknown ira algorithm \"%s\"", arg); | |
| 1972 break; | |
| 1973 | |
| 1974 case OPT_fira_region_: | |
| 1975 if (!strcmp (arg, "one")) | |
| 1976 flag_ira_region = IRA_REGION_ONE; | |
| 1977 else if (!strcmp (arg, "all")) | |
| 1978 flag_ira_region = IRA_REGION_ALL; | |
| 1979 else if (!strcmp (arg, "mixed")) | |
| 1980 flag_ira_region = IRA_REGION_MIXED; | |
| 1981 else | |
| 1982 warning (0, "unknown ira region \"%s\"", arg); | |
| 1983 break; | |
| 1984 | |
| 1985 case OPT_fira_verbose_: | |
| 1986 flag_ira_verbose = value; | |
| 1987 break; | |
| 1988 | |
| 1989 case OPT_ftracer: | |
| 1990 flag_tracer_set = true; | |
| 1991 break; | |
| 1992 | |
| 1993 case OPT_fipa_cp: | |
| 1994 flag_ipa_cp_set = true; | |
| 1995 break; | |
| 1996 | |
| 1997 case OPT_fipa_cp_clone: | |
| 1998 flag_ipa_cp_clone_set = true; | |
| 1999 break; | |
| 2000 | |
| 2001 case OPT_fpredictive_commoning: | |
| 2002 flag_predictive_commoning_set = true; | |
| 2003 break; | |
| 2004 | |
| 2005 case OPT_funswitch_loops: | |
| 2006 flag_unswitch_loops_set = true; | |
| 2007 break; | |
| 2008 | |
| 2009 case OPT_fgcse_after_reload: | |
| 2010 flag_gcse_after_reload_set = true; | |
| 2011 break; | |
| 2012 | |
| 2013 case OPT_funroll_loops: | |
| 2014 flag_unroll_loops_set = true; | |
| 2015 break; | |
| 2016 | |
| 2017 case OPT_g: | |
| 2018 set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg); | |
| 2019 break; | |
| 2020 | |
| 2021 case OPT_gcoff: | |
| 2022 set_debug_level (SDB_DEBUG, false, arg); | |
| 2023 break; | |
| 2024 | |
| 2025 case OPT_gdwarf_2: | |
| 2026 set_debug_level (DWARF2_DEBUG, false, arg); | |
| 2027 break; | |
| 2028 | |
| 2029 case OPT_ggdb: | |
| 2030 set_debug_level (NO_DEBUG, 2, arg); | |
| 2031 break; | |
| 2032 | |
| 2033 case OPT_gstabs: | |
| 2034 case OPT_gstabs_: | |
| 2035 set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg); | |
| 2036 break; | |
| 2037 | |
| 2038 case OPT_gvms: | |
| 2039 set_debug_level (VMS_DEBUG, false, arg); | |
| 2040 break; | |
| 2041 | |
| 2042 case OPT_gxcoff: | |
| 2043 case OPT_gxcoff_: | |
| 2044 set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg); | |
| 2045 break; | |
| 2046 | |
| 2047 case OPT_o: | |
| 2048 asm_file_name = arg; | |
| 2049 break; | |
| 2050 | |
| 2051 case OPT_pedantic_errors: | |
| 2052 flag_pedantic_errors = pedantic = 1; | |
| 2053 break; | |
| 2054 | |
| 2055 case OPT_floop_optimize: | |
| 2056 case OPT_frerun_loop_opt: | |
| 2057 case OPT_fstrength_reduce: | |
| 2058 case OPT_ftree_store_copy_prop: | |
| 2059 case OPT_fforce_addr: | |
| 2060 case OPT_ftree_salias: | |
| 2061 case OPT_ftree_store_ccp: | |
| 2062 /* These are no-ops, preserved for backward compatibility. */ | |
| 2063 break; | |
| 2064 | |
| 2065 default: | |
| 2066 /* If the flag was handled in a standard way, assume the lack of | |
| 2067 processing here is intentional. */ | |
| 2068 gcc_assert (cl_options[scode].flag_var); | |
| 2069 break; | |
| 2070 } | |
| 2071 | |
| 2072 return 1; | |
| 2073 } | |
| 2074 | |
| 2075 /* Handle --param NAME=VALUE. */ | |
| 2076 static void | |
| 2077 handle_param (const char *carg) | |
| 2078 { | |
| 2079 char *equal, *arg; | |
| 2080 int value; | |
| 2081 | |
| 2082 arg = xstrdup (carg); | |
| 2083 equal = strchr (arg, '='); | |
| 2084 if (!equal) | |
| 2085 error ("%s: --param arguments should be of the form NAME=VALUE", arg); | |
| 2086 else | |
| 2087 { | |
| 2088 value = integral_argument (equal + 1); | |
| 2089 if (value == -1) | |
| 2090 error ("invalid --param value %qs", equal + 1); | |
| 2091 else | |
| 2092 { | |
| 2093 *equal = '\0'; | |
| 2094 set_param_value (arg, value); | |
| 2095 } | |
| 2096 } | |
| 2097 | |
| 2098 free (arg); | |
| 2099 } | |
| 2100 | |
| 2101 /* Handle -W and -Wextra. */ | |
| 2102 static void | |
| 2103 set_Wextra (int setting) | |
| 2104 { | |
| 2105 extra_warnings = setting; | |
| 2106 | |
| 2107 /* We save the value of warn_uninitialized, since if they put | |
| 2108 -Wuninitialized on the command line, we need to generate a | |
| 2109 warning about not using it without also specifying -O. */ | |
| 2110 if (setting == 0) | |
| 2111 warn_uninitialized = 0; | |
| 2112 else if (warn_uninitialized != 1) | |
| 2113 warn_uninitialized = 2; | |
| 2114 } | |
| 2115 | |
| 2116 /* Used to set the level of strict aliasing warnings, | |
| 2117 when no level is specified (i.e., when -Wstrict-aliasing, and not | |
| 2118 -Wstrict-aliasing=level was given). | |
| 2119 ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
| 2120 and 0 otherwise. After calling this function, wstrict_aliasing will be | |
| 2121 set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
| 2122 void | |
| 2123 set_Wstrict_aliasing (int onoff) | |
| 2124 { | |
| 2125 gcc_assert (onoff == 0 || onoff == 1); | |
| 2126 if (onoff != 0) | |
| 2127 warn_strict_aliasing = 3; | |
| 2128 else | |
| 2129 warn_strict_aliasing = 0; | |
| 2130 } | |
| 2131 | |
| 2132 /* The following routines are useful in setting all the flags that | |
| 2133 -ffast-math and -fno-fast-math imply. */ | |
| 2134 void | |
| 2135 set_fast_math_flags (int set) | |
| 2136 { | |
| 2137 flag_unsafe_math_optimizations = set; | |
| 2138 set_unsafe_math_optimizations_flags (set); | |
| 2139 flag_finite_math_only = set; | |
| 2140 flag_errno_math = !set; | |
| 2141 if (set) | |
| 2142 { | |
| 2143 flag_signaling_nans = 0; | |
| 2144 flag_rounding_math = 0; | |
| 2145 flag_cx_limited_range = 1; | |
| 2146 } | |
| 2147 } | |
| 2148 | |
| 2149 /* When -funsafe-math-optimizations is set the following | |
| 2150 flags are set as well. */ | |
| 2151 void | |
| 2152 set_unsafe_math_optimizations_flags (int set) | |
| 2153 { | |
| 2154 flag_trapping_math = !set; | |
| 2155 flag_signed_zeros = !set; | |
| 2156 flag_associative_math = set; | |
| 2157 flag_reciprocal_math = set; | |
| 2158 } | |
| 2159 | |
| 2160 /* Return true iff flags are set as if -ffast-math. */ | |
| 2161 bool | |
| 2162 fast_math_flags_set_p (void) | |
| 2163 { | |
| 2164 return (!flag_trapping_math | |
| 2165 && flag_unsafe_math_optimizations | |
| 2166 && flag_finite_math_only | |
| 2167 && !flag_signed_zeros | |
| 2168 && !flag_errno_math); | |
| 2169 } | |
| 2170 | |
| 2171 /* Return true iff flags are set as if -ffast-math but using the flags stored | |
| 2172 in the struct cl_optimization structure. */ | |
| 2173 bool | |
| 2174 fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
| 2175 { | |
| 2176 return (!opt->flag_trapping_math | |
| 2177 && opt->flag_unsafe_math_optimizations | |
| 2178 && opt->flag_finite_math_only | |
| 2179 && !opt->flag_signed_zeros | |
| 2180 && !opt->flag_errno_math); | |
| 2181 } | |
| 2182 | |
| 2183 /* Handle a debug output -g switch. EXTENDED is true or false to support | |
| 2184 extended output (2 is special and means "-ggdb" was given). */ | |
| 2185 static void | |
| 2186 set_debug_level (enum debug_info_type type, int extended, const char *arg) | |
| 2187 { | |
| 2188 static bool type_explicit; | |
| 2189 | |
| 2190 use_gnu_debug_info_extensions = extended; | |
| 2191 | |
| 2192 if (type == NO_DEBUG) | |
| 2193 { | |
| 2194 if (write_symbols == NO_DEBUG) | |
| 2195 { | |
| 2196 write_symbols = PREFERRED_DEBUGGING_TYPE; | |
| 2197 | |
| 2198 if (extended == 2) | |
| 2199 { | |
| 2200 #ifdef DWARF2_DEBUGGING_INFO | |
| 2201 write_symbols = DWARF2_DEBUG; | |
| 2202 #elif defined DBX_DEBUGGING_INFO | |
| 2203 write_symbols = DBX_DEBUG; | |
| 2204 #endif | |
| 2205 } | |
| 2206 | |
| 2207 if (write_symbols == NO_DEBUG) | |
| 2208 warning (0, "target system does not support debug output"); | |
| 2209 } | |
| 2210 } | |
| 2211 else | |
| 2212 { | |
| 2213 /* Does it conflict with an already selected type? */ | |
| 2214 if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols) | |
| 2215 error ("debug format \"%s\" conflicts with prior selection", | |
| 2216 debug_type_names[type]); | |
| 2217 write_symbols = type; | |
| 2218 type_explicit = true; | |
| 2219 } | |
| 2220 | |
| 2221 /* A debug flag without a level defaults to level 2. */ | |
| 2222 if (*arg == '\0') | |
| 2223 { | |
| 2224 if (!debug_info_level) | |
| 2225 debug_info_level = 2; | |
| 2226 } | |
| 2227 else | |
| 2228 { | |
| 2229 debug_info_level = integral_argument (arg); | |
| 2230 if (debug_info_level == (unsigned int) -1) | |
| 2231 error ("unrecognised debug output level \"%s\"", arg); | |
| 2232 else if (debug_info_level > 3) | |
| 2233 error ("debug output level %s is too high", arg); | |
| 2234 } | |
| 2235 } | |
| 2236 | |
| 2237 /* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't | |
| 2238 a simple on-off switch. */ | |
| 2239 | |
| 2240 int | |
| 2241 option_enabled (int opt_idx) | |
| 2242 { | |
| 2243 const struct cl_option *option = &(cl_options[opt_idx]); | |
| 2244 | |
| 2245 if (option->flag_var) | |
| 2246 switch (option->var_type) | |
| 2247 { | |
| 2248 case CLVC_BOOLEAN: | |
| 2249 return *(int *) option->flag_var != 0; | |
| 2250 | |
| 2251 case CLVC_EQUAL: | |
| 2252 return *(int *) option->flag_var == option->var_value; | |
| 2253 | |
| 2254 case CLVC_BIT_CLEAR: | |
| 2255 return (*(int *) option->flag_var & option->var_value) == 0; | |
| 2256 | |
| 2257 case CLVC_BIT_SET: | |
| 2258 return (*(int *) option->flag_var & option->var_value) != 0; | |
| 2259 | |
| 2260 case CLVC_STRING: | |
| 2261 break; | |
| 2262 } | |
| 2263 return -1; | |
| 2264 } | |
| 2265 | |
| 2266 /* Fill STATE with the current state of option OPTION. Return true if | |
| 2267 there is some state to store. */ | |
| 2268 | |
| 2269 bool | |
| 2270 get_option_state (int option, struct cl_option_state *state) | |
| 2271 { | |
| 2272 if (cl_options[option].flag_var == 0) | |
| 2273 return false; | |
| 2274 | |
| 2275 switch (cl_options[option].var_type) | |
| 2276 { | |
| 2277 case CLVC_BOOLEAN: | |
| 2278 case CLVC_EQUAL: | |
| 2279 state->data = cl_options[option].flag_var; | |
| 2280 state->size = sizeof (int); | |
| 2281 break; | |
| 2282 | |
| 2283 case CLVC_BIT_CLEAR: | |
| 2284 case CLVC_BIT_SET: | |
| 2285 state->ch = option_enabled (option); | |
| 2286 state->data = &state->ch; | |
| 2287 state->size = 1; | |
| 2288 break; | |
| 2289 | |
| 2290 case CLVC_STRING: | |
| 2291 state->data = *(const char **) cl_options[option].flag_var; | |
| 2292 if (state->data == 0) | |
| 2293 state->data = ""; | |
| 2294 state->size = strlen ((const char *) state->data) + 1; | |
| 2295 break; | |
| 2296 } | |
| 2297 return true; | |
| 2298 } | |
| 2299 | |
| 2300 /* Enable a warning option as an error. This is used by -Werror= and | |
| 2301 also by legacy Werror-implicit-function-declaration. */ | |
| 2302 | |
| 2303 void | |
| 2304 enable_warning_as_error (const char *arg, int value, unsigned int lang_mask) | |
| 2305 { | |
| 2306 char *new_option; | |
| 2307 int option_index; | |
| 2308 | |
| 2309 new_option = XNEWVEC (char, strlen (arg) + 2); | |
| 2310 new_option[0] = 'W'; | |
| 2311 strcpy (new_option + 1, arg); | |
| 2312 option_index = find_opt (new_option, lang_mask); | |
| 2313 if (option_index == N_OPTS) | |
| 2314 { | |
| 2315 error ("-Werror=%s: No option -%s", arg, new_option); | |
| 2316 } | |
| 2317 else | |
| 2318 { | |
| 2319 int kind = value ? DK_ERROR : DK_WARNING; | |
| 2320 diagnostic_classify_diagnostic (global_dc, option_index, kind); | |
| 2321 | |
| 2322 /* -Werror=foo implies -Wfoo. */ | |
| 2323 if (cl_options[option_index].var_type == CLVC_BOOLEAN | |
| 2324 && cl_options[option_index].flag_var | |
| 2325 && kind == DK_ERROR) | |
| 2326 *(int *) cl_options[option_index].flag_var = 1; | |
| 2327 } | |
| 2328 free (new_option); | |
| 2329 } |