Line data Source code
1 : /* Command line option handling.
2 : Copyright (C) 2002-2026 Free Software Foundation, Inc.
3 : Contributed by Neil Booth.
4 :
5 : This file is part of GCC.
6 :
7 : GCC is free software; you can redistribute it and/or modify it under
8 : the terms of the GNU General Public License as published by the Free
9 : Software Foundation; either version 3, or (at your option) any later
10 : version.
11 :
12 : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 : WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 : FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 : for more details.
16 :
17 : You should have received a copy of the GNU General Public License
18 : along with GCC; see the file COPYING3. If not see
19 : <http://www.gnu.org/licenses/>. */
20 :
21 : #define INCLUDE_LIST
22 : #define INCLUDE_VECTOR
23 : #include "config.h"
24 : #include "system.h"
25 : #include "intl.h"
26 : #include "coretypes.h"
27 : #include "opts.h"
28 : #include "tm.h"
29 : #include "flags.h"
30 : #include "diagnostic.h"
31 : #include "opts-diagnostic.h"
32 : #include "insn-attr-common.h"
33 : #include "common/common-target.h"
34 : #include "spellcheck.h"
35 : #include "opt-suggestions.h"
36 : #include "diagnostics/color.h"
37 : #include "diagnostics/sink.h"
38 : #include "version.h"
39 : #include "selftest.h"
40 : #include "file-prefix-map.h"
41 :
42 : /* In this file all option sets are explicit. */
43 : #undef OPTION_SET_P
44 :
45 : /* Set by -fcanon-prefix-map. */
46 : bool flag_canon_prefix_map;
47 :
48 : /* Set by finish_options when flag_stack_protector was set only because of
49 : -fhardened. Yuck. */
50 : bool flag_stack_protector_set_by_fhardened_p;
51 :
52 : static void set_Wstrict_aliasing (struct gcc_options *opts, int onoff);
53 :
54 : /* Names of fundamental debug info formats indexed by enum
55 : debug_info_type. */
56 :
57 : const char *const debug_type_names[] =
58 : {
59 : "none", "dwarf-2", "vms", "ctf", "btf", "codeview"
60 : };
61 :
62 : /* Bitmasks of fundamental debug info formats indexed by enum
63 : debug_info_type. */
64 :
65 : static uint32_t debug_type_masks[] =
66 : {
67 : NO_DEBUG, DWARF2_DEBUG, VMS_DEBUG,
68 : CTF_DEBUG, BTF_DEBUG, CODEVIEW_DEBUG
69 : };
70 :
71 : /* Names of the set of debug formats requested by user. Updated and accessed
72 : via debug_set_names. */
73 :
74 : static char df_set_names[sizeof "none dwarf-2 vms ctf btf codeview"];
75 :
76 : /* Get enum debug_info_type of the specified debug format, for error messages.
77 : Can be used only for individual debug format types. */
78 :
79 : enum debug_info_type
80 0 : debug_set_to_format (uint32_t debug_info_set)
81 : {
82 0 : int idx = 0;
83 0 : enum debug_info_type dinfo_type = DINFO_TYPE_NONE;
84 : /* Find first set bit. */
85 0 : if (debug_info_set)
86 0 : idx = exact_log2 (debug_info_set & - debug_info_set);
87 : /* Check that only one bit is set, if at all. This function is meant to be
88 : used only for vanilla debug_info_set bitmask values, i.e. for individual
89 : debug format types upto DINFO_TYPE_MAX. */
90 0 : gcc_assert ((debug_info_set & (debug_info_set - 1)) == 0);
91 0 : dinfo_type = (enum debug_info_type)idx;
92 0 : gcc_assert (dinfo_type <= DINFO_TYPE_MAX);
93 0 : return dinfo_type;
94 : }
95 :
96 : /* Get the number of debug formats enabled for output. */
97 :
98 : unsigned int
99 12 : debug_set_count (uint32_t w_symbols)
100 : {
101 12 : unsigned int count = 0;
102 18 : while (w_symbols)
103 : {
104 6 : ++ count;
105 6 : w_symbols &= ~ (w_symbols & - w_symbols);
106 : }
107 12 : return count;
108 : }
109 :
110 : /* Get the names of the debug formats enabled for output. */
111 :
112 : const char *
113 12 : debug_set_names (uint32_t w_symbols)
114 : {
115 12 : uint32_t df_mask = 0;
116 : /* Reset the string to be returned. */
117 12 : memset (df_set_names, 0, sizeof (df_set_names));
118 : /* Get the popcount. */
119 12 : int num_set_df = debug_set_count (w_symbols);
120 : /* Iterate over the debug formats. Add name string for those enabled. */
121 18 : for (int i = DINFO_TYPE_NONE; i <= DINFO_TYPE_MAX; i++)
122 : {
123 18 : df_mask = debug_type_masks[i];
124 18 : if (w_symbols & df_mask)
125 : {
126 6 : strcat (df_set_names, debug_type_names[i]);
127 6 : num_set_df--;
128 6 : if (num_set_df)
129 0 : strcat (df_set_names, " ");
130 : else
131 : break;
132 : }
133 12 : else if (!w_symbols)
134 : {
135 : /* No debug formats enabled. */
136 6 : gcc_assert (i == DINFO_TYPE_NONE);
137 6 : strcat (df_set_names, debug_type_names[i]);
138 6 : break;
139 : }
140 : }
141 12 : return df_set_names;
142 : }
143 :
144 : /* Return TRUE iff BTF debug info is enabled. */
145 :
146 : bool
147 108313 : btf_debuginfo_p ()
148 : {
149 108313 : return (write_symbols & BTF_DEBUG);
150 : }
151 :
152 : /* Return TRUE iff BTF with CO-RE debug info is enabled. */
153 :
154 : bool
155 180 : btf_with_core_debuginfo_p ()
156 : {
157 180 : return (write_symbols & BTF_WITH_CORE_DEBUG);
158 : }
159 :
160 : /* Return TRUE iff CTF debug info is enabled. */
161 :
162 : bool
163 305 : ctf_debuginfo_p ()
164 : {
165 305 : return (write_symbols & CTF_DEBUG);
166 : }
167 :
168 : /* Return TRUE iff CodeView debug info is enabled. */
169 :
170 : bool
171 311 : codeview_debuginfo_p ()
172 : {
173 311 : return (write_symbols & CODEVIEW_DEBUG);
174 : }
175 :
176 : /* Return TRUE iff dwarf2 debug info is enabled. */
177 :
178 : bool
179 46567478 : dwarf_debuginfo_p (struct gcc_options *opts)
180 : {
181 46567478 : return (opts->x_write_symbols & DWARF2_DEBUG);
182 : }
183 :
184 : /* Return true iff the debug info format is to be generated based on DWARF
185 : DIEs (like CTF and BTF debug info formats). */
186 :
187 5024057 : bool dwarf_based_debuginfo_p ()
188 : {
189 5024057 : return ((write_symbols & CTF_DEBUG)
190 5022922 : || (write_symbols & BTF_DEBUG)
191 10046721 : || (write_symbols & CODEVIEW_DEBUG));
192 : }
193 :
194 : /* All flag uses below need to explicitly reference the option sets
195 : to operate on. */
196 : #define global_options DO_NOT_USE
197 : #define global_options_set DO_NOT_USE
198 :
199 : /* Parse the -femit-struct-debug-detailed option value
200 : and set the flag variables. */
201 :
202 : #define MATCH( prefix, string ) \
203 : ((strncmp (prefix, string, sizeof prefix - 1) == 0) \
204 : ? ((string += sizeof prefix - 1), 1) : 0)
205 :
206 : void
207 42 : set_struct_debug_option (struct gcc_options *opts, location_t loc,
208 : const char *spec)
209 : {
210 : /* various labels for comparison */
211 58 : static const char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:";
212 58 : static const char ord_lbl[] = "ord:", gen_lbl[] = "gen:";
213 58 : static const char none_lbl[] = "none", any_lbl[] = "any";
214 58 : static const char base_lbl[] = "base", sys_lbl[] = "sys";
215 :
216 58 : enum debug_struct_file files = DINFO_STRUCT_FILE_ANY;
217 : /* Default is to apply to as much as possible. */
218 58 : enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS;
219 58 : int ord = 1, gen = 1;
220 :
221 : /* What usage? */
222 58 : if (MATCH (dfn_lbl, spec))
223 : usage = DINFO_USAGE_DFN;
224 58 : else if (MATCH (dir_lbl, spec))
225 : usage = DINFO_USAGE_DIR_USE;
226 42 : else if (MATCH (ind_lbl, spec))
227 8 : usage = DINFO_USAGE_IND_USE;
228 :
229 : /* Generics or not? */
230 58 : if (MATCH (ord_lbl, spec))
231 : gen = 0;
232 50 : else if (MATCH (gen_lbl, spec))
233 8 : ord = 0;
234 :
235 : /* What allowable environment? */
236 58 : if (MATCH (none_lbl, spec))
237 : files = DINFO_STRUCT_FILE_NONE;
238 54 : else if (MATCH (any_lbl, spec))
239 : files = DINFO_STRUCT_FILE_ANY;
240 42 : else if (MATCH (sys_lbl, spec))
241 : files = DINFO_STRUCT_FILE_SYS;
242 30 : else if (MATCH (base_lbl, spec))
243 : files = DINFO_STRUCT_FILE_BASE;
244 : else
245 0 : error_at (loc,
246 : "argument %qs to %<-femit-struct-debug-detailed%> "
247 : "not recognized",
248 : spec);
249 :
250 : /* Effect the specification. */
251 58 : if (usage == DINFO_USAGE_NUM_ENUMS)
252 : {
253 34 : if (ord)
254 : {
255 34 : opts->x_debug_struct_ordinary[DINFO_USAGE_DFN] = files;
256 34 : opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files;
257 34 : opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE] = files;
258 : }
259 34 : if (gen)
260 : {
261 34 : opts->x_debug_struct_generic[DINFO_USAGE_DFN] = files;
262 34 : opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE] = files;
263 34 : opts->x_debug_struct_generic[DINFO_USAGE_IND_USE] = files;
264 : }
265 : }
266 : else
267 : {
268 24 : if (ord)
269 16 : opts->x_debug_struct_ordinary[usage] = files;
270 24 : if (gen)
271 16 : opts->x_debug_struct_generic[usage] = files;
272 : }
273 :
274 58 : if (*spec == ',')
275 16 : set_struct_debug_option (opts, loc, spec+1);
276 : else
277 : {
278 : /* No more -femit-struct-debug-detailed specifications.
279 : Do final checks. */
280 42 : if (*spec != '\0')
281 0 : error_at (loc,
282 : "argument %qs to %<-femit-struct-debug-detailed%> unknown",
283 : spec);
284 42 : if (opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE]
285 42 : < opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE]
286 42 : || opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE]
287 42 : < opts->x_debug_struct_generic[DINFO_USAGE_IND_USE])
288 0 : error_at (loc,
289 : "%<-femit-struct-debug-detailed=dir:...%> must allow "
290 : "at least as much as "
291 : "%<-femit-struct-debug-detailed=ind:...%>");
292 : }
293 42 : }
294 :
295 : /* Strip off a legitimate source ending from the input string NAME of
296 : length LEN. Rather than having to know the names used by all of
297 : our front ends, we strip off an ending of a period followed by
298 : up to fource characters. (C++ uses ".cpp".) */
299 :
300 : void
301 1529 : strip_off_ending (char *name, int len)
302 : {
303 1529 : int i;
304 1692 : for (i = 2; i < 5 && len > i; i++)
305 : {
306 1692 : if (name[len - i] == '.')
307 : {
308 1529 : name[len - i] = '\0';
309 1529 : break;
310 : }
311 : }
312 1529 : }
313 :
314 : /* Find the base name of a path, stripping off both directories and
315 : a single final extension. */
316 : int
317 294309 : base_of_path (const char *path, const char **base_out)
318 : {
319 294309 : const char *base = path;
320 294309 : const char *dot = 0;
321 294309 : const char *p = path;
322 294309 : char c = *p;
323 22888551 : while (c)
324 : {
325 22594242 : if (IS_DIR_SEPARATOR (c))
326 : {
327 2574831 : base = p + 1;
328 2574831 : dot = 0;
329 : }
330 20019411 : else if (c == '.')
331 514970 : dot = p;
332 22594242 : c = *++p;
333 : }
334 294309 : if (!dot)
335 421 : dot = p;
336 294309 : *base_out = base;
337 294309 : return dot - base;
338 : }
339 :
340 : /* What to print when a switch has no documentation. */
341 : static const char undocumented_msg[] = N_("This option lacks documentation.");
342 : static const char use_diagnosed_msg[] = N_("Uses of this option are diagnosed.");
343 :
344 : typedef char *char_p; /* For DEF_VEC_P. */
345 :
346 : static void set_debug_level (uint32_t dinfo, int extended,
347 : const char *arg, struct gcc_options *opts,
348 : struct gcc_options *opts_set,
349 : location_t loc);
350 : static void set_fast_math_flags (struct gcc_options *opts, int set);
351 : static void decode_d_option (const char *arg, struct gcc_options *opts,
352 : location_t loc, diagnostics::context *dc);
353 : static void set_unsafe_math_optimizations_flags (struct gcc_options *opts,
354 : int set);
355 : static void enable_warning_as_error (const char *arg, int value,
356 : unsigned int lang_mask,
357 : const struct cl_option_handlers *handlers,
358 : struct gcc_options *opts,
359 : struct gcc_options *opts_set,
360 : location_t loc,
361 : diagnostics::context *dc);
362 :
363 : /* Handle a back-end option; arguments and return value as for
364 : handle_option. */
365 :
366 : bool
367 1293641 : target_handle_option (struct gcc_options *opts,
368 : struct gcc_options *opts_set,
369 : const struct cl_decoded_option *decoded,
370 : unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
371 : location_t loc,
372 : const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
373 : diagnostics::context *dc, void (*) (void))
374 : {
375 1293641 : gcc_assert (dc == global_dc);
376 1293641 : gcc_assert (static_cast<diagnostics::kind> (kind)
377 : == diagnostics::kind::unspecified);
378 1293641 : return targetm_common.handle_option (opts, opts_set, decoded, loc);
379 : }
380 :
381 : /* Add comma-separated strings to a char_p vector. */
382 :
383 : static void
384 102 : add_comma_separated_to_vector (void **pvec, const char *arg)
385 : {
386 102 : char *tmp;
387 102 : char *r;
388 102 : char *w;
389 102 : char *token_start;
390 102 : vec<char_p> *v = (vec<char_p> *) *pvec;
391 :
392 102 : vec_check_alloc (v, 1);
393 :
394 : /* We never free this string. */
395 102 : tmp = xstrdup (arg);
396 :
397 102 : r = tmp;
398 102 : w = tmp;
399 102 : token_start = tmp;
400 :
401 1227 : while (*r != '\0')
402 : {
403 1125 : if (*r == ',')
404 : {
405 20 : *w++ = '\0';
406 20 : ++r;
407 20 : v->safe_push (token_start);
408 20 : token_start = w;
409 : }
410 1125 : if (*r == '\\' && r[1] == ',')
411 : {
412 0 : *w++ = ',';
413 0 : r += 2;
414 : }
415 : else
416 1125 : *w++ = *r++;
417 : }
418 :
419 102 : *w = '\0';
420 102 : if (*token_start != '\0')
421 102 : v->safe_push (token_start);
422 :
423 102 : *pvec = v;
424 102 : }
425 :
426 : /* Initialize opts_obstack. */
427 :
428 : void
429 613034 : init_opts_obstack (void)
430 : {
431 613034 : gcc_obstack_init (&opts_obstack);
432 613034 : }
433 :
434 : /* Initialize OPTS and OPTS_SET before using them in parsing options. */
435 :
436 : void
437 50201064 : init_options_struct (struct gcc_options *opts, struct gcc_options *opts_set)
438 : {
439 : /* Ensure that opts_obstack has already been initialized by the time
440 : that we initialize any gcc_options instances (PR jit/68446). */
441 50201064 : gcc_assert (opts_obstack.chunk_size > 0);
442 :
443 50201064 : *opts = global_options_init;
444 :
445 50201064 : if (opts_set)
446 600522 : memset (opts_set, 0, sizeof (*opts_set));
447 :
448 : /* Initialize whether `char' is signed. */
449 50201064 : opts->x_flag_signed_char = DEFAULT_SIGNED_CHAR;
450 :
451 : /* Initialize target_flags before default_options_optimization
452 : so the latter can modify it. */
453 50201064 : opts->x_target_flags = targetm_common.default_target_flags;
454 :
455 : /* Some targets have ABI-specified unwind tables. */
456 50201064 : opts->x_flag_unwind_tables = targetm_common.unwind_tables_default;
457 :
458 : /* Languages not explicitly specifying a default get fortran rules. */
459 50201064 : opts->x_flag_complex_method = 1;
460 :
461 : /* Some targets have other target-specific initialization. */
462 50201064 : targetm_common.option_init_struct (opts);
463 50201064 : }
464 :
465 : /* If indicated by the optimization level LEVEL (-Os if SIZE is set,
466 : -Ofast if FAST is set, -Og if DEBUG is set), apply the option DEFAULT_OPT
467 : to OPTS and OPTS_SET, diagnostic context DC, location LOC, with language
468 : mask LANG_MASK and option handlers HANDLERS. */
469 :
470 : static void
471 76782600 : maybe_default_option (struct gcc_options *opts,
472 : struct gcc_options *opts_set,
473 : const struct default_options *default_opt,
474 : int level, bool size, bool fast, bool debug,
475 : unsigned int lang_mask,
476 : const struct cl_option_handlers *handlers,
477 : location_t loc,
478 : diagnostics::context *dc)
479 : {
480 76782600 : const struct cl_option *option = &cl_options[default_opt->opt_index];
481 76782600 : bool enabled;
482 :
483 76782600 : if (size)
484 1884720 : gcc_assert (level == 2);
485 76782600 : if (fast)
486 76800 : gcc_assert (level == 3);
487 76782600 : if (debug)
488 83520 : gcc_assert (level == 1);
489 :
490 76782600 : switch (default_opt->levels)
491 : {
492 : case OPT_LEVELS_ALL:
493 : enabled = true;
494 : break;
495 :
496 0 : case OPT_LEVELS_0_ONLY:
497 0 : enabled = (level == 0);
498 0 : break;
499 :
500 19195650 : case OPT_LEVELS_1_PLUS:
501 19195650 : enabled = (level >= 1);
502 19195650 : break;
503 :
504 0 : case OPT_LEVELS_1_PLUS_SPEED_ONLY:
505 0 : enabled = (level >= 1 && !size && !debug);
506 : break;
507 :
508 8318115 : case OPT_LEVELS_1_PLUS_NOT_DEBUG:
509 8318115 : enabled = (level >= 1 && !debug);
510 8318115 : break;
511 :
512 26873910 : case OPT_LEVELS_2_PLUS:
513 26873910 : enabled = (level >= 2);
514 26873910 : break;
515 :
516 7678260 : case OPT_LEVELS_2_PLUS_SPEED_ONLY:
517 7678260 : enabled = (level >= 2 && !size && !debug);
518 : break;
519 :
520 10877535 : case OPT_LEVELS_3_PLUS:
521 10877535 : enabled = (level >= 3);
522 10877535 : break;
523 :
524 0 : case OPT_LEVELS_3_PLUS_AND_SIZE:
525 0 : enabled = (level >= 3 || size);
526 0 : break;
527 :
528 : case OPT_LEVELS_SIZE:
529 : enabled = size;
530 : break;
531 :
532 1919565 : case OPT_LEVELS_FAST:
533 1919565 : enabled = fast;
534 1919565 : break;
535 :
536 0 : case OPT_LEVELS_NONE:
537 0 : default:
538 0 : gcc_unreachable ();
539 : }
540 :
541 67184775 : if (enabled)
542 51533923 : handle_generated_option (opts, opts_set, default_opt->opt_index,
543 51533923 : default_opt->arg, default_opt->value,
544 : lang_mask,
545 : static_cast<int> (diagnostics::kind::unspecified),
546 : loc,
547 : handlers, true, dc);
548 25248677 : else if (default_opt->arg == NULL
549 25248677 : && !option->cl_reject_negative
550 24029092 : && !(option->flags & CL_PARAMS))
551 20978267 : handle_generated_option (opts, opts_set, default_opt->opt_index,
552 20978267 : default_opt->arg, !default_opt->value,
553 : lang_mask,
554 : static_cast<int> (diagnostics::kind::unspecified),
555 : loc,
556 : handlers, true, dc);
557 76782600 : }
558 :
559 : /* As indicated by the optimization level LEVEL (-Os if SIZE is set,
560 : -Ofast if FAST is set), apply the options in array DEFAULT_OPTS to
561 : OPTS and OPTS_SET, diagnostic context DC, location LOC, with
562 : language mask LANG_MASK and option handlers HANDLERS. */
563 :
564 : static void
565 1279710 : maybe_default_options (struct gcc_options *opts,
566 : struct gcc_options *opts_set,
567 : const struct default_options *default_opts,
568 : int level, bool size, bool fast, bool debug,
569 : unsigned int lang_mask,
570 : const struct cl_option_handlers *handlers,
571 : location_t loc,
572 : diagnostics::context *dc)
573 : {
574 1279710 : size_t i;
575 :
576 78062310 : for (i = 0; default_opts[i].levels != OPT_LEVELS_NONE; i++)
577 76782600 : maybe_default_option (opts, opts_set, &default_opts[i],
578 : level, size, fast, debug,
579 : lang_mask, handlers, loc, dc);
580 1279710 : }
581 :
582 : /* Table of options enabled by default at different levels.
583 : Please keep this list sorted by level and alphabetized within
584 : each level; this makes it easier to keep the documentation
585 : in sync. */
586 :
587 : static const struct default_options default_options_table[] =
588 : {
589 : /* -O1 and -Og optimizations. */
590 : { OPT_LEVELS_1_PLUS, OPT_fbit_tests, NULL, 1 },
591 : { OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 },
592 : { OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 },
593 : { OPT_LEVELS_1_PLUS, OPT_fcprop_registers, NULL, 1 },
594 : { OPT_LEVELS_1_PLUS, OPT_fdefer_pop, NULL, 1 },
595 : { OPT_LEVELS_1_PLUS, OPT_fforward_propagate, NULL, 1 },
596 : { OPT_LEVELS_1_PLUS, OPT_fguess_branch_probability, NULL, 1 },
597 : { OPT_LEVELS_1_PLUS, OPT_fipa_profile, NULL, 1 },
598 : { OPT_LEVELS_1_PLUS, OPT_fipa_pure_const, NULL, 1 },
599 : { OPT_LEVELS_1_PLUS, OPT_fipa_reference, NULL, 1 },
600 : { OPT_LEVELS_1_PLUS, OPT_fipa_reference_addressable, NULL, 1 },
601 : { OPT_LEVELS_1_PLUS, OPT_fjump_tables, NULL, 1 },
602 : { OPT_LEVELS_1_PLUS, OPT_fmerge_constants, NULL, 1 },
603 : { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
604 : { OPT_LEVELS_1_PLUS, OPT_freorder_blocks, NULL, 1 },
605 : { OPT_LEVELS_1_PLUS, OPT_fshrink_wrap, NULL, 1 },
606 : { OPT_LEVELS_1_PLUS, OPT_fsplit_wide_types, NULL, 1 },
607 : { OPT_LEVELS_1_PLUS, OPT_fthread_jumps, NULL, 1 },
608 : { OPT_LEVELS_1_PLUS, OPT_ftree_builtin_call_dce, NULL, 1 },
609 : { OPT_LEVELS_1_PLUS, OPT_ftree_ccp, NULL, 1 },
610 : { OPT_LEVELS_1_PLUS, OPT_ftree_ch, NULL, 1 },
611 : { OPT_LEVELS_1_PLUS, OPT_ftree_coalesce_vars, NULL, 1 },
612 : { OPT_LEVELS_1_PLUS, OPT_ftree_copy_prop, NULL, 1 },
613 : { OPT_LEVELS_1_PLUS, OPT_ftree_dce, NULL, 1 },
614 : { OPT_LEVELS_1_PLUS, OPT_ftree_dominator_opts, NULL, 1 },
615 : { OPT_LEVELS_1_PLUS, OPT_ftree_fre, NULL, 1 },
616 : { OPT_LEVELS_1_PLUS, OPT_ftree_sink, NULL, 1 },
617 : { OPT_LEVELS_1_PLUS, OPT_ftree_slsr, NULL, 1 },
618 : { OPT_LEVELS_1_PLUS, OPT_ftree_ter, NULL, 1 },
619 : { OPT_LEVELS_1_PLUS, OPT_fvar_tracking, NULL, 1 },
620 :
621 : /* -O1 (and not -Og) optimizations. */
622 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fbranch_count_reg, NULL, 1 },
623 : #if DELAY_SLOTS
624 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fdelayed_branch, NULL, 1 },
625 : #endif
626 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fdse, NULL, 1 },
627 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion, NULL, 1 },
628 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion2, NULL, 1 },
629 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_finline_functions_called_once, NULL, 1 },
630 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fmove_loop_invariants, NULL, 1 },
631 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fmove_loop_stores, NULL, 1 },
632 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fssa_phiopt, NULL, 1 },
633 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fipa_modref, NULL, 1 },
634 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_bit_ccp, NULL, 1 },
635 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_dse, NULL, 1 },
636 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_pta, NULL, 1 },
637 : { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_sra, NULL, 1 },
638 :
639 : /* -O2 and -Os optimizations. */
640 : { OPT_LEVELS_2_PLUS, OPT_fcaller_saves, NULL, 1 },
641 : { OPT_LEVELS_2_PLUS, OPT_fcode_hoisting, NULL, 1 },
642 : { OPT_LEVELS_2_PLUS, OPT_fcrossjumping, NULL, 1 },
643 : { OPT_LEVELS_2_PLUS, OPT_fcse_follow_jumps, NULL, 1 },
644 : { OPT_LEVELS_2_PLUS, OPT_fdep_fusion, NULL, 1 },
645 : { OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 },
646 : { OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 },
647 : { OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 },
648 : { OPT_LEVELS_2_PLUS, OPT_fext_dce, NULL, 1 },
649 : { OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 },
650 : { OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },
651 : { OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
652 : { OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
653 : { OPT_LEVELS_2_PLUS, OPT_fipa_bit_cp, NULL, 1 },
654 : { OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 },
655 : { OPT_LEVELS_2_PLUS, OPT_fipa_icf, NULL, 1 },
656 : { OPT_LEVELS_2_PLUS, OPT_fipa_ra, NULL, 1 },
657 : { OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 },
658 : { OPT_LEVELS_2_PLUS, OPT_fipa_vrp, NULL, 1 },
659 : { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
660 : { OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 },
661 : { OPT_LEVELS_2_PLUS, OPT_foptimize_sibling_calls, NULL, 1 },
662 : { OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 },
663 : { OPT_LEVELS_2_PLUS, OPT_fpeephole2, NULL, 1 },
664 : { OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 },
665 : { OPT_LEVELS_2_PLUS, OPT_frerun_cse_after_loop, NULL, 1 },
666 : { OPT_LEVELS_2_PLUS, OPT_fspeculatively_call_stored_functions, NULL, 1 },
667 : #ifdef INSN_SCHEDULING
668 : { OPT_LEVELS_2_PLUS, OPT_fschedule_insns2, NULL, 1 },
669 : #endif
670 : { OPT_LEVELS_2_PLUS, OPT_fstrict_aliasing, NULL, 1 },
671 : { OPT_LEVELS_2_PLUS, OPT_fstore_merging, NULL, 1 },
672 : { OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 },
673 : { OPT_LEVELS_2_PLUS, OPT_ftree_switch_conversion, NULL, 1 },
674 : { OPT_LEVELS_2_PLUS, OPT_ftree_tail_merge, NULL, 1 },
675 : { OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 },
676 : { OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL,
677 : VECT_COST_MODEL_VERY_CHEAP },
678 : { OPT_LEVELS_2_PLUS, OPT_finline_functions, NULL, 1 },
679 : { OPT_LEVELS_2_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
680 : { OPT_LEVELS_2_PLUS, OPT_foptimize_crc, NULL, 1 },
681 : { OPT_LEVELS_2_PLUS, OPT_flate_combine_instructions, NULL, 1 },
682 :
683 : /* -O2 and above optimizations, but not -Os or -Og. */
684 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_functions, NULL, 1 },
685 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_jumps, NULL, 1 },
686 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_labels, NULL, 1 },
687 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_loops, NULL, 1 },
688 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_foptimize_strlen, NULL, 1 },
689 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_freorder_blocks_algorithm_, NULL,
690 : REORDER_BLOCKS_ALGORITHM_STC },
691 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_ftree_loop_vectorize, NULL, 1 },
692 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_ftree_slp_vectorize, NULL, 1 },
693 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fopenmp_target_simd_clone_, NULL,
694 : OMP_TARGET_SIMD_CLONE_NOHOST },
695 : #ifdef INSN_SCHEDULING
696 : /* Only run the pre-regalloc scheduling pass if optimizing for speed. */
697 : { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fschedule_insns, NULL, 1 },
698 : #endif
699 :
700 : /* -O3 and -Os optimizations. */
701 :
702 : /* -O3 optimizations. */
703 : { OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 },
704 : { OPT_LEVELS_3_PLUS, OPT_fipa_cp_clone, NULL, 1 },
705 : { OPT_LEVELS_3_PLUS, OPT_floop_interchange, NULL, 1 },
706 : { OPT_LEVELS_3_PLUS, OPT_floop_unroll_and_jam, NULL, 1 },
707 : { OPT_LEVELS_3_PLUS, OPT_fpeel_loops, NULL, 1 },
708 : { OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
709 : { OPT_LEVELS_3_PLUS, OPT_fsplit_loops, NULL, 1 },
710 : { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribution, NULL, 1 },
711 : { OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 },
712 : { OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 },
713 : { OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC },
714 : { OPT_LEVELS_3_PLUS, OPT_fversion_loops_for_strides, NULL, 1 },
715 :
716 : /* -O3 parameters. */
717 : { OPT_LEVELS_3_PLUS, OPT__param_max_inline_insns_auto_, NULL, 30 },
718 : { OPT_LEVELS_3_PLUS, OPT__param_early_inlining_insns_, NULL, 14 },
719 : { OPT_LEVELS_3_PLUS, OPT__param_inline_heuristics_hint_percent_, NULL, 600 },
720 : { OPT_LEVELS_3_PLUS, OPT__param_inline_min_speedup_, NULL, 15 },
721 : { OPT_LEVELS_3_PLUS, OPT__param_max_inline_insns_single_, NULL, 200 },
722 :
723 : /* -Ofast adds optimizations to -O3. */
724 : { OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 },
725 : { OPT_LEVELS_FAST, OPT_fallow_store_data_races, NULL, 1 },
726 : { OPT_LEVELS_FAST, OPT_fsemantic_interposition, NULL, 0 },
727 :
728 : { OPT_LEVELS_NONE, 0, NULL, 0 }
729 : };
730 :
731 : /* Default the options in OPTS and OPTS_SET based on the optimization
732 : settings in DECODED_OPTIONS and DECODED_OPTIONS_COUNT. */
733 : void
734 639855 : default_options_optimization (struct gcc_options *opts,
735 : struct gcc_options *opts_set,
736 : struct cl_decoded_option *decoded_options,
737 : unsigned int decoded_options_count,
738 : location_t loc,
739 : unsigned int lang_mask,
740 : const struct cl_option_handlers *handlers,
741 : diagnostics::context *dc)
742 : {
743 639855 : unsigned int i;
744 639855 : int opt2;
745 639855 : bool openacc_mode = false;
746 :
747 : /* Scan to see what optimization level has been specified. That will
748 : determine the default value of many flags. */
749 10969765 : for (i = 1; i < decoded_options_count; i++)
750 : {
751 10329910 : struct cl_decoded_option *opt = &decoded_options[i];
752 10329910 : switch (opt->opt_index)
753 : {
754 573004 : case OPT_O:
755 573004 : if (*opt->arg == '\0')
756 : {
757 14584 : opts->x_optimize = 1;
758 14584 : opts->x_optimize_size = 0;
759 14584 : opts->x_optimize_fast = 0;
760 14584 : opts->x_optimize_debug = 0;
761 : }
762 : else
763 : {
764 558420 : const int optimize_val = integral_argument (opt->arg);
765 558420 : if (optimize_val == -1)
766 0 : error_at (loc, "argument to %<-O%> should be a non-negative "
767 : "integer, %<g%>, %<s%>, %<z%> or %<fast%>");
768 : else
769 : {
770 558420 : opts->x_optimize = optimize_val;
771 558420 : if ((unsigned int) opts->x_optimize > 255)
772 3 : opts->x_optimize = 255;
773 558420 : opts->x_optimize_size = 0;
774 558420 : opts->x_optimize_fast = 0;
775 558420 : opts->x_optimize_debug = 0;
776 : }
777 : }
778 : break;
779 :
780 15855 : case OPT_Os:
781 15855 : opts->x_optimize_size = 1;
782 :
783 : /* Optimizing for size forces optimize to be 2. */
784 15855 : opts->x_optimize = 2;
785 15855 : opts->x_optimize_fast = 0;
786 15855 : opts->x_optimize_debug = 0;
787 15855 : break;
788 :
789 21 : case OPT_Oz:
790 21 : opts->x_optimize_size = 2;
791 :
792 : /* Optimizing for size forces optimize to be 2. */
793 21 : opts->x_optimize = 2;
794 21 : opts->x_optimize_fast = 0;
795 21 : opts->x_optimize_debug = 0;
796 21 : break;
797 :
798 727 : case OPT_Ofast:
799 : /* -Ofast only adds flags to -O3. */
800 727 : opts->x_optimize_size = 0;
801 727 : opts->x_optimize = 3;
802 727 : opts->x_optimize_fast = 1;
803 727 : opts->x_optimize_debug = 0;
804 727 : break;
805 :
806 720 : case OPT_Og:
807 : /* -Og selects optimization level 1. */
808 720 : opts->x_optimize_size = 0;
809 720 : opts->x_optimize = 1;
810 720 : opts->x_optimize_fast = 0;
811 720 : opts->x_optimize_debug = 1;
812 720 : break;
813 :
814 23809 : case OPT_fopenacc:
815 23809 : if (opt->value)
816 10329910 : openacc_mode = true;
817 : break;
818 :
819 : default:
820 : /* Ignore other options in this prescan. */
821 : break;
822 : }
823 : }
824 :
825 639855 : maybe_default_options (opts, opts_set, default_options_table,
826 639855 : opts->x_optimize, opts->x_optimize_size,
827 639855 : opts->x_optimize_fast, opts->x_optimize_debug,
828 : lang_mask, handlers, loc, dc);
829 :
830 : /* -O2 param settings. */
831 639855 : opt2 = (opts->x_optimize >= 2);
832 :
833 639855 : if (openacc_mode)
834 3339 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_pta, true);
835 :
836 : /* Track fields in field-sensitive alias analysis. */
837 639855 : if (opt2)
838 495353 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_fields_for_field_sensitive,
839 : 100);
840 :
841 639855 : if (opts->x_optimize_size)
842 : /* We want to crossjump as much as possible. */
843 15706 : SET_OPTION_IF_UNSET (opts, opts_set, param_min_crossjump_insns, 1);
844 :
845 : /* Restrict the amount of work combine does at -Og while retaining
846 : most of its useful transforms. */
847 639855 : if (opts->x_optimize_debug)
848 696 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_combine_insns, 2);
849 :
850 : /* Allow default optimizations to be specified on a per-machine basis. */
851 639855 : maybe_default_options (opts, opts_set,
852 : targetm_common.option_optimization_table,
853 : opts->x_optimize, opts->x_optimize_size,
854 639855 : opts->x_optimize_fast, opts->x_optimize_debug,
855 : lang_mask, handlers, loc, dc);
856 639855 : }
857 :
858 : /* Control IPA optimizations based on different live patching LEVEL. */
859 : static void
860 20 : control_options_for_live_patching (struct gcc_options *opts,
861 : struct gcc_options *opts_set,
862 : enum live_patching_level level,
863 : location_t loc)
864 : {
865 20 : gcc_assert (level > LIVE_PATCHING_NONE);
866 :
867 20 : switch (level)
868 : {
869 3 : case LIVE_PATCHING_INLINE_ONLY_STATIC:
870 : #define LIVE_PATCHING_OPTION "-flive-patching=inline-only-static"
871 3 : if (opts_set->x_flag_ipa_cp_clone && opts->x_flag_ipa_cp_clone)
872 0 : error_at (loc, "%qs is incompatible with %qs",
873 : "-fipa-cp-clone", LIVE_PATCHING_OPTION);
874 : else
875 3 : opts->x_flag_ipa_cp_clone = 0;
876 :
877 3 : if (opts_set->x_flag_ipa_sra && opts->x_flag_ipa_sra)
878 0 : error_at (loc, "%qs is incompatible with %qs",
879 : "-fipa-sra", LIVE_PATCHING_OPTION);
880 : else
881 3 : opts->x_flag_ipa_sra = 0;
882 :
883 3 : if (opts_set->x_flag_partial_inlining && opts->x_flag_partial_inlining)
884 0 : error_at (loc, "%qs is incompatible with %qs",
885 : "-fpartial-inlining", LIVE_PATCHING_OPTION);
886 : else
887 3 : opts->x_flag_partial_inlining = 0;
888 :
889 3 : if (opts_set->x_flag_ipa_cp && opts->x_flag_ipa_cp)
890 0 : error_at (loc, "%qs is incompatible with %qs",
891 : "-fipa-cp", LIVE_PATCHING_OPTION);
892 : else
893 3 : opts->x_flag_ipa_cp = 0;
894 :
895 : /* FALLTHROUGH. */
896 20 : case LIVE_PATCHING_INLINE_CLONE:
897 : #undef LIVE_PATCHING_OPTION
898 : #define LIVE_PATCHING_OPTION "-flive-patching=inline-only-static|inline-clone"
899 : /* live patching should disable whole-program optimization. */
900 20 : if (opts_set->x_flag_whole_program && opts->x_flag_whole_program)
901 1 : error_at (loc, "%qs is incompatible with %qs",
902 : "-fwhole-program", LIVE_PATCHING_OPTION);
903 : else
904 19 : opts->x_flag_whole_program = 0;
905 :
906 : /* visibility change should be excluded by !flag_whole_program
907 : && !in_lto_p && !flag_ipa_cp_clone && !flag_ipa_sra
908 : && !flag_partial_inlining. */
909 :
910 20 : if (opts_set->x_flag_ipa_pta && opts->x_flag_ipa_pta)
911 0 : error_at (loc, "%qs is incompatible with %qs",
912 : "-fipa-pta", LIVE_PATCHING_OPTION);
913 : else
914 20 : opts->x_flag_ipa_pta = 0;
915 :
916 20 : if (opts_set->x_flag_ipa_reference && opts->x_flag_ipa_reference)
917 0 : error_at (loc, "%qs is incompatible with %qs",
918 : "-fipa-reference", LIVE_PATCHING_OPTION);
919 : else
920 20 : opts->x_flag_ipa_reference = 0;
921 :
922 20 : if (opts_set->x_flag_ipa_ra && opts->x_flag_ipa_ra)
923 0 : error_at (loc, "%qs is incompatible with %qs",
924 : "-fipa-ra", LIVE_PATCHING_OPTION);
925 : else
926 20 : opts->x_flag_ipa_ra = 0;
927 :
928 20 : if (opts_set->x_flag_ipa_icf && opts->x_flag_ipa_icf)
929 0 : error_at (loc, "%qs is incompatible with %qs",
930 : "-fipa-icf", LIVE_PATCHING_OPTION);
931 : else
932 20 : opts->x_flag_ipa_icf = 0;
933 :
934 20 : if (opts_set->x_flag_ipa_icf_functions && opts->x_flag_ipa_icf_functions)
935 0 : error_at (loc, "%qs is incompatible with %qs",
936 : "-fipa-icf-functions", LIVE_PATCHING_OPTION);
937 : else
938 20 : opts->x_flag_ipa_icf_functions = 0;
939 :
940 20 : if (opts_set->x_flag_ipa_icf_variables && opts->x_flag_ipa_icf_variables)
941 0 : error_at (loc, "%qs is incompatible with %qs",
942 : "-fipa-icf-variables", LIVE_PATCHING_OPTION);
943 : else
944 20 : opts->x_flag_ipa_icf_variables = 0;
945 :
946 20 : if (opts_set->x_flag_ipa_bit_cp && opts->x_flag_ipa_bit_cp)
947 0 : error_at (loc, "%qs is incompatible with %qs",
948 : "-fipa-bit-cp", LIVE_PATCHING_OPTION);
949 : else
950 20 : opts->x_flag_ipa_bit_cp = 0;
951 :
952 20 : if (opts_set->x_flag_ipa_vrp && opts->x_flag_ipa_vrp)
953 0 : error_at (loc, "%qs is incompatible with %qs",
954 : "-fipa-vrp", LIVE_PATCHING_OPTION);
955 : else
956 20 : opts->x_flag_ipa_vrp = 0;
957 :
958 20 : if (opts_set->x_flag_ipa_pure_const && opts->x_flag_ipa_pure_const)
959 0 : error_at (loc, "%qs is incompatible with %qs",
960 : "-fipa-pure-const", LIVE_PATCHING_OPTION);
961 : else
962 20 : opts->x_flag_ipa_pure_const = 0;
963 :
964 20 : if (opts_set->x_flag_ipa_modref && opts->x_flag_ipa_modref)
965 0 : error_at (loc,
966 : "%<-fipa-modref%> is incompatible with %qs",
967 : LIVE_PATCHING_OPTION);
968 : else
969 20 : opts->x_flag_ipa_modref = 0;
970 :
971 : /* FIXME: disable unreachable code removal. */
972 :
973 : /* discovery of functions/variables with no address taken. */
974 20 : if (opts_set->x_flag_ipa_reference_addressable
975 0 : && opts->x_flag_ipa_reference_addressable)
976 0 : error_at (loc, "%qs is incompatible with %qs",
977 : "-fipa-reference-addressable", LIVE_PATCHING_OPTION);
978 : else
979 20 : opts->x_flag_ipa_reference_addressable = 0;
980 :
981 : /* ipa stack alignment propagation. */
982 20 : if (opts_set->x_flag_ipa_stack_alignment
983 0 : && opts->x_flag_ipa_stack_alignment)
984 0 : error_at (loc, "%qs is incompatible with %qs",
985 : "-fipa-stack-alignment", LIVE_PATCHING_OPTION);
986 : else
987 20 : opts->x_flag_ipa_stack_alignment = 0;
988 20 : break;
989 0 : default:
990 0 : gcc_unreachable ();
991 : }
992 :
993 : #undef LIVE_PATCHING_OPTION
994 20 : }
995 :
996 : /* --help option argument if set. */
997 : vec<const char *> help_option_arguments;
998 :
999 : /* Return the string name describing a sanitizer argument which has been
1000 : provided on the command line and has set this particular flag. */
1001 : const char *
1002 208 : find_sanitizer_argument (struct gcc_options *opts,
1003 : sanitize_code_type flags)
1004 : {
1005 706 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1006 : {
1007 : /* Need to find the sanitizer_opts element which:
1008 : a) Could have set the flags requested.
1009 : b) Has been set on the command line.
1010 :
1011 : Can have (a) without (b) if the flag requested is e.g.
1012 : SANITIZE_ADDRESS, since both -fsanitize=address and
1013 : -fsanitize=kernel-address set this flag.
1014 :
1015 : Can have (b) without (a) by requesting more than one sanitizer on the
1016 : command line. */
1017 706 : if ((sanitizer_opts[i].flag & opts->x_flag_sanitize)
1018 : != sanitizer_opts[i].flag)
1019 352 : continue;
1020 354 : if ((sanitizer_opts[i].flag & flags) != flags)
1021 146 : continue;
1022 : return sanitizer_opts[i].name;
1023 : }
1024 : return NULL;
1025 : }
1026 :
1027 :
1028 : /* Report an error to the user about sanitizer options they have requested
1029 : which have set conflicting flags.
1030 :
1031 : LEFT and RIGHT indicate sanitizer flags which conflict with each other, this
1032 : function reports an error if both have been set in OPTS->x_flag_sanitize and
1033 : ensures the error identifies the requested command line options that have
1034 : set these flags. */
1035 : static void
1036 5118840 : report_conflicting_sanitizer_options (struct gcc_options *opts, location_t loc,
1037 : sanitize_code_type left,
1038 : sanitize_code_type right)
1039 : {
1040 5118840 : sanitize_code_type left_seen = (opts->x_flag_sanitize & left);
1041 5118840 : sanitize_code_type right_seen = (opts->x_flag_sanitize & right);
1042 5118840 : if (left_seen && right_seen)
1043 : {
1044 104 : const char* left_arg = find_sanitizer_argument (opts, left_seen);
1045 104 : const char* right_arg = find_sanitizer_argument (opts, right_seen);
1046 104 : gcc_assert (left_arg && right_arg);
1047 104 : error_at (loc,
1048 : "%<-fsanitize=%s%> is incompatible with %<-fsanitize=%s%>",
1049 : left_arg, right_arg);
1050 : }
1051 5118840 : }
1052 :
1053 : /* Validate from OPTS and OPTS_SET that when -fipa-reorder-for-locality is
1054 : enabled no explicit -flto-partition is also passed as the locality cloning
1055 : pass uses its own partitioning scheme. */
1056 :
1057 : static void
1058 639855 : validate_ipa_reorder_locality_lto_partition (struct gcc_options *opts,
1059 : struct gcc_options *opts_set)
1060 : {
1061 639855 : static bool validated_p = false;
1062 :
1063 639855 : if (opts_set->x_flag_lto_partition)
1064 : {
1065 15580 : if (opts->x_flag_ipa_reorder_for_locality && !validated_p)
1066 0 : error ("%<-fipa-reorder-for-locality%> is incompatible with"
1067 : " an explicit %qs option", "-flto-partition");
1068 : }
1069 639855 : validated_p = true;
1070 639855 : }
1071 :
1072 : /* If OPTS.x_dump_base_name doesn't contain any directory separators
1073 : and has not had OPTS.x_dump_dir_name prepended to it, generate
1074 : a new string in opts_obstack that has the dump_dir_name prepended to
1075 : the dump_base_name. */
1076 :
1077 : const char *
1078 291490 : maybe_prepend_dump_dir_name (const gcc_options &opts)
1079 : {
1080 291490 : const char *sep = opts.x_dump_base_name;
1081 :
1082 3958259 : for (; *sep; sep++)
1083 3687228 : if (IS_DIR_SEPARATOR (*sep))
1084 : break;
1085 :
1086 291490 : if (*sep)
1087 : {
1088 : /* If dump_base_name contains subdirectories, don't prepend
1089 : anything. */
1090 : return nullptr;
1091 : }
1092 :
1093 271031 : if (opts.x_dump_dir_name)
1094 : {
1095 : /* We have a DUMP_DIR_NAME, prepend that. */
1096 108071 : return opts_concat (opts.x_dump_dir_name,
1097 108071 : opts.x_dump_base_name, NULL);
1098 : }
1099 :
1100 : return nullptr;
1101 : }
1102 :
1103 : /* After all options at LOC have been read into OPTS and OPTS_SET,
1104 : finalize settings of those options and diagnose incompatible
1105 : combinations. */
1106 : void
1107 639855 : finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
1108 : location_t loc)
1109 : {
1110 639855 : if (opts->x_dump_base_name
1111 637031 : && ! opts->x_dump_base_name_prefixed)
1112 : {
1113 582744 : if (const char *prepended_dump_base_name
1114 291372 : = maybe_prepend_dump_dir_name (*opts))
1115 108071 : opts->x_dump_base_name = prepended_dump_base_name;
1116 :
1117 : /* It is definitely prefixed now. */
1118 291372 : opts->x_dump_base_name_prefixed = true;
1119 : }
1120 :
1121 : /* Handle related options for unit-at-a-time, toplevel-reorder, and
1122 : section-anchors. */
1123 639855 : if (!opts->x_flag_unit_at_a_time)
1124 : {
1125 5 : if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
1126 0 : error_at (loc, "section anchors must be disabled when unit-at-a-time "
1127 : "is disabled");
1128 5 : opts->x_flag_section_anchors = 0;
1129 5 : if (opts->x_flag_toplevel_reorder == 1)
1130 0 : error_at (loc, "toplevel reorder must be disabled when unit-at-a-time "
1131 : "is disabled");
1132 5 : opts->x_flag_toplevel_reorder = 0;
1133 : }
1134 :
1135 : /* -fself-test depends on the state of the compiler prior to
1136 : compiling anything. Ideally it should be run on an empty source
1137 : file. However, in case we get run with actual source, assume
1138 : -fsyntax-only which will inhibit any compiler initialization
1139 : which may confuse the self tests. */
1140 639855 : if (opts->x_flag_self_test)
1141 5 : opts->x_flag_syntax_only = 1;
1142 :
1143 639855 : if (opts->x_flag_tm && opts->x_flag_non_call_exceptions)
1144 3 : sorry ("transactional memory is not supported with non-call exceptions");
1145 :
1146 : /* Unless the user has asked for section anchors, we disable toplevel
1147 : reordering at -O0 to disable transformations that might be surprising
1148 : to end users and to get -fno-toplevel-reorder tested. */
1149 639855 : if (!opts->x_optimize
1150 115293 : && opts->x_flag_toplevel_reorder == 2
1151 115063 : && !(opts->x_flag_section_anchors && opts_set->x_flag_section_anchors))
1152 : {
1153 115063 : opts->x_flag_toplevel_reorder = 0;
1154 115063 : opts->x_flag_section_anchors = 0;
1155 : }
1156 639855 : if (!opts->x_flag_toplevel_reorder)
1157 : {
1158 134868 : if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
1159 0 : error_at (loc, "section anchors must be disabled when toplevel reorder"
1160 : " is disabled");
1161 134868 : opts->x_flag_section_anchors = 0;
1162 : }
1163 :
1164 639855 : if (opts->x_flag_hardened)
1165 : {
1166 92 : if (!opts_set->x_flag_auto_var_init)
1167 88 : opts->x_flag_auto_var_init = AUTO_INIT_ZERO;
1168 4 : else if (opts->x_flag_auto_var_init != AUTO_INIT_ZERO)
1169 4 : warning_at (loc, OPT_Whardened,
1170 : "%<-ftrivial-auto-var-init=zero%> is not enabled by "
1171 : "%<-fhardened%> because it was specified on the command "
1172 : "line");
1173 : }
1174 :
1175 639855 : if (!opts->x_flag_opts_finished)
1176 : {
1177 : /* We initialize opts->x_flag_pie to -1 so that targets can set a
1178 : default value. */
1179 294196 : if (opts->x_flag_pie == -1)
1180 : {
1181 : /* We initialize opts->x_flag_pic to -1 so that we can tell if
1182 : -fpic, -fPIC, -fno-pic or -fno-PIC is used. */
1183 254599 : if (opts->x_flag_pic == -1)
1184 245234 : opts->x_flag_pie = (opts->x_flag_hardened
1185 245234 : ? /*-fPIE*/ 2 : DEFAULT_FLAG_PIE);
1186 : else
1187 9365 : opts->x_flag_pie = 0;
1188 : }
1189 : /* If -fPIE or -fpie is used, turn on PIC. */
1190 294196 : if (opts->x_flag_pie)
1191 19377 : opts->x_flag_pic = opts->x_flag_pie;
1192 274819 : else if (opts->x_flag_pic == -1)
1193 265454 : opts->x_flag_pic = 0;
1194 294196 : if (opts->x_flag_pic && !opts->x_flag_pie)
1195 9161 : opts->x_flag_shlib = 1;
1196 294196 : opts->x_flag_opts_finished = true;
1197 : }
1198 :
1199 : /* We initialize opts->x_flag_stack_protect to -1 so that targets
1200 : can set a default value. With --enable-default-ssp or -fhardened
1201 : the default is -fstack-protector-strong. */
1202 639855 : if (opts->x_flag_stack_protect == -1)
1203 : {
1204 : /* This should check FRAME_GROWS_DOWNWARD, but on some targets it's
1205 : defined in such a way that it uses flag_stack_protect which can't
1206 : be used here. Moreover, some targets like BPF don't support
1207 : -fstack-protector at all but we don't know that here. So remember
1208 : that flag_stack_protect was set at the behest of -fhardened. */
1209 292880 : if (opts->x_flag_hardened)
1210 : {
1211 88 : opts->x_flag_stack_protect = SPCT_FLAG_STRONG;
1212 88 : flag_stack_protector_set_by_fhardened_p = true;
1213 : }
1214 : else
1215 292792 : opts->x_flag_stack_protect = DEFAULT_FLAG_SSP;
1216 : }
1217 346975 : else if (opts->x_flag_hardened
1218 4 : && opts->x_flag_stack_protect != SPCT_FLAG_STRONG)
1219 4 : warning_at (UNKNOWN_LOCATION, OPT_Whardened,
1220 : "%<-fstack-protector-strong%> is not enabled by "
1221 : "%<-fhardened%> because it was specified on the command "
1222 : "line");
1223 :
1224 639855 : if (opts->x_optimize == 0)
1225 : {
1226 : /* Inlining does not work if not optimizing,
1227 : so force it not to be done. */
1228 115293 : opts->x_warn_inline = 0;
1229 115293 : opts->x_flag_no_inline = 1;
1230 : }
1231 :
1232 : /* At -O0 or -Og, turn __builtin_unreachable into a trap. */
1233 639855 : if (!opts->x_optimize || opts->x_optimize_debug)
1234 115989 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unreachable_traps, true);
1235 :
1236 : /* Pipelining of outer loops is only possible when general pipelining
1237 : capabilities are requested. */
1238 639855 : if (!opts->x_flag_sel_sched_pipelining)
1239 639803 : opts->x_flag_sel_sched_pipelining_outer_loops = 0;
1240 :
1241 639855 : if (opts->x_flag_conserve_stack)
1242 : {
1243 30 : SET_OPTION_IF_UNSET (opts, opts_set, param_large_stack_frame, 100);
1244 30 : SET_OPTION_IF_UNSET (opts, opts_set, param_stack_frame_growth, 40);
1245 : }
1246 :
1247 639855 : if (opts->x_flag_lto)
1248 : {
1249 : #ifdef ENABLE_LTO
1250 184230 : opts->x_flag_generate_lto = 1;
1251 :
1252 : /* When generating IL, do not operate in whole-program mode.
1253 : Otherwise, symbols will be privatized too early, causing link
1254 : errors later. */
1255 184230 : opts->x_flag_whole_program = 0;
1256 : #else
1257 : error_at (loc, "LTO support has not been enabled in this configuration");
1258 : #endif
1259 184230 : if (!opts->x_flag_fat_lto_objects
1260 21206 : && (!HAVE_LTO_PLUGIN
1261 21206 : || (opts_set->x_flag_use_linker_plugin
1262 19670 : && !opts->x_flag_use_linker_plugin)))
1263 : {
1264 8928 : if (opts_set->x_flag_fat_lto_objects)
1265 0 : error_at (loc, "%<-fno-fat-lto-objects%> are supported only with "
1266 : "linker plugin");
1267 8928 : opts->x_flag_fat_lto_objects = 1;
1268 : }
1269 :
1270 : /* -gsplit-dwarf isn't compatible with LTO, see PR88389. */
1271 184230 : if (opts->x_dwarf_split_debug_info)
1272 : {
1273 1 : inform (loc, "%<-gsplit-dwarf%> is not supported with LTO,"
1274 : " disabling");
1275 1 : opts->x_dwarf_split_debug_info = 0;
1276 : }
1277 : }
1278 :
1279 : /* We initialize opts->x_flag_split_stack to -1 so that targets can set a
1280 : default value if they choose based on other options. */
1281 639855 : if (opts->x_flag_split_stack == -1)
1282 292504 : opts->x_flag_split_stack = 0;
1283 347351 : else if (opts->x_flag_split_stack)
1284 : {
1285 1720 : if (!targetm_common.supports_split_stack (true, opts))
1286 : {
1287 0 : error_at (loc, "%<-fsplit-stack%> is not supported by "
1288 : "this compiler configuration");
1289 0 : opts->x_flag_split_stack = 0;
1290 : }
1291 : }
1292 :
1293 : /* If stack splitting is turned on, and the user did not explicitly
1294 : request function partitioning, turn off partitioning, as it
1295 : confuses the linker when trying to handle partitioned split-stack
1296 : code that calls a non-split-stack functions. But if partitioning
1297 : was turned on explicitly just hope for the best. */
1298 639855 : if (opts->x_flag_split_stack
1299 1720 : && opts->x_flag_reorder_blocks_and_partition)
1300 1280 : SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_blocks_and_partition, 0);
1301 :
1302 639855 : if (opts->x_flag_reorder_blocks_and_partition)
1303 494120 : SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_functions, 1);
1304 :
1305 639855 : validate_ipa_reorder_locality_lto_partition (opts, opts_set);
1306 :
1307 : /* The -gsplit-dwarf option requires -ggnu-pubnames. */
1308 639855 : if (opts->x_dwarf_split_debug_info)
1309 311 : opts->x_debug_generate_pub_sections = 2;
1310 :
1311 639855 : if ((opts->x_flag_sanitize
1312 639855 : & (SANITIZE_USER_ADDRESS | SANITIZE_KERNEL_ADDRESS)) == 0)
1313 : {
1314 636739 : if (opts->x_flag_sanitize & SANITIZE_POINTER_COMPARE)
1315 0 : error_at (loc,
1316 : "%<-fsanitize=pointer-compare%> must be combined with "
1317 : "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
1318 636739 : if (opts->x_flag_sanitize & SANITIZE_POINTER_SUBTRACT)
1319 0 : error_at (loc,
1320 : "%<-fsanitize=pointer-subtract%> must be combined with "
1321 : "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
1322 : }
1323 :
1324 : /* Address sanitizers conflict with the thread sanitizer. */
1325 639855 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_THREAD,
1326 : SANITIZE_ADDRESS);
1327 639855 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_THREAD,
1328 : SANITIZE_HWADDRESS);
1329 : /* The leak sanitizer conflicts with the thread sanitizer. */
1330 639855 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_LEAK,
1331 : SANITIZE_THREAD);
1332 :
1333 : /* No combination of HWASAN and ASAN work together. */
1334 639855 : report_conflicting_sanitizer_options (opts, loc,
1335 : SANITIZE_HWADDRESS, SANITIZE_ADDRESS);
1336 :
1337 : /* The userspace and kernel address sanitizers conflict with each other. */
1338 639855 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_USER_HWADDRESS,
1339 : SANITIZE_KERNEL_HWADDRESS);
1340 639855 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_USER_ADDRESS,
1341 : SANITIZE_KERNEL_ADDRESS);
1342 :
1343 : /* Sanitizers using Memory-Tagging Extension conflict with HWASAN and
1344 : ASAN. */
1345 639855 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_MEMTAG,
1346 : SANITIZE_HWADDRESS);
1347 639855 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_MEMTAG,
1348 : SANITIZE_ADDRESS);
1349 :
1350 : /* Memtag sanitizer implies HWASAN but with tags always generated by
1351 : the hardware randomly. */
1352 639855 : if ((opts->x_flag_sanitize & SANITIZE_MEMTAG_STACK)
1353 0 : && opts->x_param_hwasan_random_frame_tag == 0)
1354 : {
1355 0 : warning_at (loc, OPT_fsanitize_,
1356 : "%<--param hwasan-random-frame-tag=0%> is ignored when "
1357 : "%<-fsanitize=memtag-stack%> is present");
1358 0 : opts->x_param_hwasan_random_frame_tag = 1;
1359 : }
1360 :
1361 : /* Check error recovery for -fsanitize-recover option. */
1362 22394925 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1363 21755070 : if ((opts->x_flag_sanitize_recover & sanitizer_opts[i].flag)
1364 15352105 : && !sanitizer_opts[i].can_recover)
1365 40 : error_at (loc, "%<-fsanitize-recover=%s%> is not supported",
1366 : sanitizer_opts[i].name);
1367 :
1368 : /* Check -fsanitize-trap option. */
1369 22394925 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1370 21755070 : if ((opts->x_flag_sanitize_trap & sanitizer_opts[i].flag)
1371 4381 : && !sanitizer_opts[i].can_trap
1372 : /* Allow -fsanitize-trap=all or -fsanitize-trap=undefined
1373 : to set flag_sanitize_trap & SANITIZE_VPTR bit which will
1374 : effectively disable -fsanitize=vptr, just disallow
1375 : explicit -fsanitize-trap=vptr. */
1376 184 : && sanitizer_opts[i].flag != SANITIZE_VPTR)
1377 0 : error_at (loc, "%<-fsanitize-trap=%s%> is not supported",
1378 : sanitizer_opts[i].name);
1379 :
1380 : /* When instrumenting the pointers, we don't want to remove
1381 : the null pointer checks. */
1382 639855 : if (opts->x_flag_sanitize & (SANITIZE_NULL | SANITIZE_NONNULL_ATTRIBUTE
1383 : | SANITIZE_RETURNS_NONNULL_ATTRIBUTE))
1384 1688 : opts->x_flag_delete_null_pointer_checks = 0;
1385 :
1386 : /* Aggressive compiler optimizations may cause false negatives. */
1387 639855 : if (opts->x_flag_sanitize & ~(SANITIZE_LEAK | SANITIZE_UNREACHABLE))
1388 7543 : opts->x_flag_aggressive_loop_optimizations = 0;
1389 :
1390 : /* Enable -fsanitize-address-use-after-scope if either address sanitizer is
1391 : enabled. */
1392 639855 : if (opts->x_flag_sanitize
1393 639855 : & (SANITIZE_USER_ADDRESS | SANITIZE_USER_HWADDRESS))
1394 3316 : SET_OPTION_IF_UNSET (opts, opts_set, flag_sanitize_address_use_after_scope,
1395 : true);
1396 :
1397 : /* Force -fstack-reuse=none in case -fsanitize-address-use-after-scope
1398 : is enabled. */
1399 639855 : if (opts->x_flag_sanitize_address_use_after_scope)
1400 : {
1401 3282 : if (opts->x_flag_stack_reuse != SR_NONE
1402 3232 : && opts_set->x_flag_stack_reuse != SR_NONE)
1403 0 : error_at (loc,
1404 : "%<-fsanitize-address-use-after-scope%> requires "
1405 : "%<-fstack-reuse=none%> option");
1406 :
1407 3282 : opts->x_flag_stack_reuse = SR_NONE;
1408 : }
1409 :
1410 639855 : if ((opts->x_flag_sanitize & SANITIZE_USER_ADDRESS) && opts->x_flag_tm)
1411 0 : sorry ("transactional memory is not supported with %<-fsanitize=address%>");
1412 :
1413 639855 : if ((opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS) && opts->x_flag_tm)
1414 0 : sorry ("transactional memory is not supported with "
1415 : "%<-fsanitize=kernel-address%>");
1416 :
1417 : /* Currently live patching is not support for LTO. */
1418 639855 : if (opts->x_flag_live_patching == LIVE_PATCHING_INLINE_ONLY_STATIC && opts->x_flag_lto)
1419 1 : sorry ("live patching (with %qs) is not supported with LTO",
1420 : "inline-only-static");
1421 :
1422 : /* Currently vtable verification is not supported for LTO */
1423 639855 : if (opts->x_flag_vtable_verify && opts->x_flag_lto)
1424 0 : sorry ("vtable verification is not supported with LTO");
1425 :
1426 : /* Control IPA optimizations based on different -flive-patching level. */
1427 639855 : if (opts->x_flag_live_patching)
1428 20 : control_options_for_live_patching (opts, opts_set,
1429 : opts->x_flag_live_patching,
1430 : loc);
1431 :
1432 : /* Allow cunroll to grow size accordingly. */
1433 639855 : if (!opts_set->x_flag_cunroll_grow_size)
1434 639855 : opts->x_flag_cunroll_grow_size
1435 1279710 : = (opts->x_flag_unroll_loops
1436 160074 : || opts->x_flag_peel_loops
1437 1279710 : || opts->x_optimize >= 3);
1438 :
1439 : /* Use -fvect-cost-model=cheap instead of -fvect-cost-mode=very-cheap
1440 : by default with explicit -ftree-{loop,slp}-vectorize. */
1441 639855 : if (opts->x_optimize == 2
1442 465663 : && (opts_set->x_flag_tree_loop_vectorize
1443 465602 : || opts_set->x_flag_tree_vectorize))
1444 347617 : SET_OPTION_IF_UNSET (opts, opts_set, flag_vect_cost_model,
1445 : VECT_COST_MODEL_CHEAP);
1446 :
1447 639855 : if (opts->x_flag_gtoggle)
1448 : {
1449 : /* Make sure to process -gtoggle only once. */
1450 629 : opts->x_flag_gtoggle = false;
1451 629 : if (opts->x_debug_info_level == DINFO_LEVEL_NONE)
1452 : {
1453 380 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
1454 :
1455 380 : if (opts->x_write_symbols == NO_DEBUG)
1456 380 : opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
1457 : }
1458 : else
1459 249 : opts->x_debug_info_level = DINFO_LEVEL_NONE;
1460 : }
1461 :
1462 : /* Also enable markers with -fauto-profile even when debug info is disabled,
1463 : so we assign same discriminators and can read back the profile info. */
1464 639855 : if (!opts_set->x_debug_nonbind_markers_p)
1465 639823 : opts->x_debug_nonbind_markers_p
1466 639823 : = (opts->x_optimize
1467 524530 : && ((opts->x_debug_info_level >= DINFO_LEVEL_NORMAL
1468 52567 : && (dwarf_debuginfo_p (opts) || codeview_debuginfo_p ()))
1469 471972 : || opts->x_flag_auto_profile)
1470 1332204 : && !(opts->x_flag_selective_scheduling
1471 52558 : || opts->x_flag_selective_scheduling2));
1472 :
1473 : /* We know which debug output will be used so we can set flag_var_tracking
1474 : and flag_var_tracking_uninit if the user has not specified them. */
1475 639855 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL
1476 639855 : || (!dwarf_debuginfo_p (opts) && !codeview_debuginfo_p ())
1477 : /* We have not yet initialized debug hooks so match that to check
1478 : whether we're only doing DWARF2_LINENO_DEBUGGING_INFO. */
1479 : #ifndef DWARF2_DEBUGGING_INFO
1480 : || true
1481 : #endif
1482 : )
1483 : {
1484 580777 : if ((opts_set->x_flag_var_tracking && opts->x_flag_var_tracking == 1)
1485 580761 : || (opts_set->x_flag_var_tracking_uninit
1486 0 : && opts->x_flag_var_tracking_uninit == 1))
1487 : {
1488 16 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
1489 15 : warning_at (UNKNOWN_LOCATION, 0,
1490 : "variable tracking requested, but useless unless "
1491 : "producing debug info");
1492 : else
1493 1 : warning_at (UNKNOWN_LOCATION, 0,
1494 : "variable tracking requested, but not supported "
1495 : "by this debug format");
1496 : }
1497 580777 : opts->x_flag_var_tracking = 0;
1498 580777 : opts->x_flag_var_tracking_uninit = 0;
1499 580777 : opts->x_flag_var_tracking_assignments = 0;
1500 : }
1501 :
1502 639855 : if (opts_set->x_flag_var_tracking_uninit && opts->x_flag_var_tracking_uninit)
1503 0 : opts->x_flag_var_tracking = 1;
1504 :
1505 639855 : if (!opts_set->x_flag_var_tracking_assignments)
1506 639781 : opts->x_flag_var_tracking_assignments
1507 1279562 : = (opts->x_flag_var_tracking
1508 1279562 : && !(opts->x_flag_selective_scheduling
1509 52554 : || opts->x_flag_selective_scheduling2));
1510 :
1511 639855 : if (opts->x_flag_var_tracking_assignments_toggle)
1512 0 : opts->x_flag_var_tracking_assignments
1513 0 : = !opts->x_flag_var_tracking_assignments;
1514 :
1515 639855 : if (opts->x_flag_var_tracking_assignments && !opts->x_flag_var_tracking)
1516 2 : opts->x_flag_var_tracking = opts->x_flag_var_tracking_assignments = -1;
1517 :
1518 639855 : if (opts->x_flag_var_tracking_assignments
1519 52561 : && (opts->x_flag_selective_scheduling
1520 52561 : || opts->x_flag_selective_scheduling2))
1521 5 : warning_at (loc, 0,
1522 : "var-tracking-assignments changes selective scheduling");
1523 :
1524 639855 : if (opts->x_flag_syntax_only)
1525 : {
1526 284 : opts->x_write_symbols = NO_DEBUG;
1527 284 : opts->x_profile_flag = 0;
1528 : }
1529 :
1530 639855 : if (opts->x_warn_strict_flex_arrays)
1531 13 : if (opts->x_flag_strict_flex_arrays == 0)
1532 : {
1533 4 : opts->x_warn_strict_flex_arrays = 0;
1534 4 : warning_at (UNKNOWN_LOCATION, 0,
1535 : "%<-Wstrict-flex-arrays%> is ignored when"
1536 : " %<-fstrict-flex-arrays%> is not present");
1537 : }
1538 :
1539 639855 : if (opts->x_flag_openmp_ompt && !opts->x_flag_openmp)
1540 8 : error_at (loc, "%<-fopenmp-ompt%> requires %<-fopenmp%>");
1541 :
1542 639855 : diagnose_options (opts, opts_set, loc);
1543 639855 : }
1544 :
1545 : /* The function diagnoses incompatible combinations for provided options
1546 : (OPTS and OPTS_SET) at a given LOCation. The function is called both
1547 : when command line is parsed (after the target optimization hook) and
1548 : when an optimize/target attribute (or pragma) is used. */
1549 :
1550 933972 : void diagnose_options (gcc_options *opts, gcc_options *opts_set,
1551 : location_t loc)
1552 : {
1553 : /* The optimization to partition hot and cold basic blocks into separate
1554 : sections of the .o and executable files does not work (currently)
1555 : with exception handling. This is because there is no support for
1556 : generating unwind info. If opts->x_flag_exceptions is turned on
1557 : we need to turn off the partitioning optimization. */
1558 :
1559 933972 : enum unwind_info_type ui_except
1560 933972 : = targetm_common.except_unwind_info (opts);
1561 :
1562 933972 : if (opts->x_flag_exceptions
1563 267897 : && opts->x_flag_reorder_blocks_and_partition
1564 89420 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
1565 : {
1566 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1567 0 : inform (loc,
1568 : "%<-freorder-blocks-and-partition%> does not work "
1569 : "with exceptions on this architecture");
1570 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1571 0 : opts->x_flag_reorder_blocks = 1;
1572 : }
1573 :
1574 : /* If user requested unwind info, then turn off the partitioning
1575 : optimization. */
1576 :
1577 933972 : if (opts->x_flag_unwind_tables
1578 640732 : && !targetm_common.unwind_tables_default
1579 640732 : && opts->x_flag_reorder_blocks_and_partition
1580 492257 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
1581 : {
1582 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1583 0 : inform (loc,
1584 : "%<-freorder-blocks-and-partition%> does not support "
1585 : "unwind info on this architecture");
1586 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1587 0 : opts->x_flag_reorder_blocks = 1;
1588 : }
1589 :
1590 : /* If the target requested unwind info, then turn off the partitioning
1591 : optimization with a different message. Likewise, if the target does not
1592 : support named sections. */
1593 :
1594 933972 : if (opts->x_flag_reorder_blocks_and_partition
1595 640670 : && (!targetm_common.have_named_sections
1596 640670 : || (opts->x_flag_unwind_tables
1597 492257 : && targetm_common.unwind_tables_default
1598 0 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))))
1599 : {
1600 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1601 0 : inform (loc,
1602 : "%<-freorder-blocks-and-partition%> does not work "
1603 : "on this architecture");
1604 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1605 0 : opts->x_flag_reorder_blocks = 1;
1606 : }
1607 :
1608 :
1609 933972 : }
1610 :
1611 : #define LEFT_COLUMN 27
1612 :
1613 : /* Output ITEM, of length ITEM_WIDTH, in the left column,
1614 : followed by word-wrapped HELP in a second column. */
1615 : static void
1616 28646 : wrap_help (const char *help,
1617 : const char *item,
1618 : unsigned int item_width,
1619 : unsigned int columns)
1620 : {
1621 28646 : unsigned int col_width = LEFT_COLUMN;
1622 28646 : unsigned int remaining, room, len;
1623 :
1624 28646 : remaining = strlen (help);
1625 :
1626 40837 : do
1627 : {
1628 40837 : room = columns - 3 - MAX (col_width, item_width);
1629 40837 : if (room > columns)
1630 0 : room = 0;
1631 40837 : len = remaining;
1632 :
1633 40837 : if (room < len)
1634 : {
1635 : unsigned int i;
1636 :
1637 547128 : for (i = 0; help[i]; i++)
1638 : {
1639 547128 : if (i >= room && len != remaining)
1640 : break;
1641 534937 : if (help[i] == ' ')
1642 : len = i;
1643 454934 : else if ((help[i] == '-' || help[i] == '/')
1644 1901 : && help[i + 1] != ' '
1645 1901 : && i > 0 && ISALPHA (help[i - 1]))
1646 534937 : len = i + 1;
1647 : }
1648 : }
1649 :
1650 40837 : printf (" %-*.*s %.*s\n", col_width, item_width, item, len, help);
1651 40837 : item_width = 0;
1652 93649 : while (help[len] == ' ')
1653 11975 : len++;
1654 40837 : help += len;
1655 40837 : remaining -= len;
1656 : }
1657 40837 : while (remaining);
1658 28646 : }
1659 :
1660 : /* Data structure used to print list of valid option values. */
1661 :
1662 : class option_help_tuple
1663 : {
1664 : public:
1665 14 : option_help_tuple (int code, vec<const char *> values):
1666 14 : m_code (code), m_values (values)
1667 : {}
1668 :
1669 : /* Code of an option. */
1670 : int m_code;
1671 :
1672 : /* List of possible values. */
1673 : vec<const char *> m_values;
1674 : };
1675 :
1676 : /* Print help for a specific front-end, etc. */
1677 : static void
1678 135 : print_filtered_help (unsigned int include_flags,
1679 : unsigned int exclude_flags,
1680 : unsigned int any_flags,
1681 : unsigned int columns,
1682 : struct gcc_options *opts,
1683 : unsigned int lang_mask)
1684 : {
1685 135 : unsigned int i;
1686 135 : const char *help;
1687 135 : bool found = false;
1688 135 : bool displayed = false;
1689 135 : char new_help[256];
1690 :
1691 135 : if (!opts->x_help_printed)
1692 70 : opts->x_help_printed = XCNEWVAR (char, cl_options_count);
1693 :
1694 135 : if (!opts->x_help_enum_printed)
1695 70 : opts->x_help_enum_printed = XCNEWVAR (char, cl_enums_count);
1696 :
1697 135 : auto_vec<option_help_tuple> help_tuples;
1698 :
1699 349380 : for (i = 0; i < cl_options_count; i++)
1700 : {
1701 349245 : const struct cl_option *option = cl_options + i;
1702 349245 : unsigned int len;
1703 349245 : const char *opt;
1704 349245 : const char *tab;
1705 :
1706 349245 : if (include_flags == 0
1707 341484 : || ((option->flags & include_flags) != include_flags))
1708 : {
1709 308148 : if ((option->flags & any_flags) == 0)
1710 304749 : continue;
1711 : }
1712 :
1713 : /* Skip unwanted switches. */
1714 44496 : if ((option->flags & exclude_flags) != 0)
1715 9936 : continue;
1716 :
1717 : /* The driver currently prints its own help text. */
1718 34560 : if ((option->flags & CL_DRIVER) != 0
1719 861 : && (option->flags & (((1U << cl_lang_count) - 1)
1720 767 : | CL_COMMON | CL_TARGET)) == 0)
1721 94 : continue;
1722 :
1723 : /* If an option contains a language specification,
1724 : exclude it from common unless all languages are present. */
1725 34466 : if ((include_flags & CL_COMMON)
1726 4860 : && !(option->flags & CL_DRIVER)
1727 4470 : && (option->flags & CL_LANG_ALL)
1728 140 : && (option->flags & CL_LANG_ALL) != CL_LANG_ALL)
1729 140 : continue;
1730 :
1731 34326 : found = true;
1732 : /* Skip switches that have already been printed. */
1733 34326 : if (opts->x_help_printed[i])
1734 5669 : continue;
1735 :
1736 28657 : opts->x_help_printed[i] = true;
1737 :
1738 28657 : help = option->help;
1739 28657 : if (help == NULL)
1740 : {
1741 1574 : if (exclude_flags & CL_UNDOCUMENTED)
1742 11 : continue;
1743 :
1744 : help = undocumented_msg;
1745 : }
1746 :
1747 : /* Get the translation. */
1748 28646 : help = _(help);
1749 :
1750 28646 : if (option->alias_target < N_OPTS
1751 1603 : && cl_options [option->alias_target].help)
1752 : {
1753 1570 : const struct cl_option *target = cl_options + option->alias_target;
1754 1570 : if (option->help == NULL)
1755 : {
1756 : /* The option is undocumented but is an alias for an option that
1757 : is documented. If the option has alias arguments, then its
1758 : purpose is to provide certain arguments to the other option, so
1759 : inform the reader of this. Otherwise, point the reader to the
1760 : other option in preference to the former. */
1761 :
1762 928 : if (option->alias_arg)
1763 : {
1764 154 : if (option->neg_alias_arg)
1765 127 : snprintf (new_help, sizeof new_help,
1766 127 : _("Same as %s%s (or, in negated form, %s%s)."),
1767 : target->opt_text, option->alias_arg,
1768 127 : target->opt_text, option->neg_alias_arg);
1769 : else
1770 27 : snprintf (new_help, sizeof new_help,
1771 27 : _("Same as %s%s."),
1772 27 : target->opt_text, option->alias_arg);
1773 : }
1774 : else
1775 774 : snprintf (new_help, sizeof new_help,
1776 774 : _("Same as %s."),
1777 774 : target->opt_text);
1778 : }
1779 : else
1780 : {
1781 : /* For documented options with aliases, mention the aliased
1782 : option's name for reference. */
1783 642 : snprintf (new_help, sizeof new_help,
1784 642 : _("%s Same as %s."),
1785 642 : help, cl_options [option->alias_target].opt_text);
1786 : }
1787 :
1788 : help = new_help;
1789 : }
1790 :
1791 28646 : if (option->warn_message)
1792 : {
1793 : /* Mention that the use of the option will trigger a warning. */
1794 50 : if (help == new_help)
1795 43 : snprintf (new_help + strlen (new_help),
1796 43 : sizeof new_help - strlen (new_help),
1797 : " %s", _(use_diagnosed_msg));
1798 : else
1799 7 : snprintf (new_help, sizeof new_help,
1800 : "%s %s", help, _(use_diagnosed_msg));
1801 :
1802 : help = new_help;
1803 : }
1804 :
1805 : /* Find the gap between the name of the
1806 : option and its descriptive text. */
1807 28646 : tab = strchr (help, '\t');
1808 28646 : if (tab)
1809 : {
1810 1646 : len = tab - help;
1811 1646 : opt = help;
1812 1646 : help = tab + 1;
1813 : }
1814 : else
1815 : {
1816 27000 : opt = option->opt_text;
1817 27000 : len = strlen (opt);
1818 : }
1819 :
1820 : /* With the -Q option enabled we change the descriptive text associated
1821 : with an option to be an indication of its current setting. */
1822 28646 : if (!opts->x_quiet_flag)
1823 : {
1824 2830 : void *flag_var = option_flag_var (i, opts);
1825 :
1826 2830 : if (len < (LEFT_COLUMN + 2))
1827 2526 : strcpy (new_help, "\t\t");
1828 : else
1829 304 : strcpy (new_help, "\t");
1830 :
1831 : /* Set to print whether the option is enabled or disabled,
1832 : or, if it's an alias for another option, the name of
1833 : the aliased option. */
1834 2830 : bool print_state = false;
1835 :
1836 2830 : if (flag_var != NULL
1837 2576 : && option->var_type != CLVC_DEFER)
1838 : {
1839 : /* If OPTION is only available for a specific subset
1840 : of languages other than this one, mention them. */
1841 2576 : bool avail_for_lang = true;
1842 2576 : if (unsigned langset = option->flags & CL_LANG_ALL)
1843 : {
1844 1576 : if (!(langset & lang_mask))
1845 : {
1846 742 : avail_for_lang = false;
1847 742 : strcat (new_help, _("[available in "));
1848 12614 : for (unsigned i = 0, n = 0; (1U << i) < CL_LANG_ALL; ++i)
1849 11872 : if (langset & (1U << i))
1850 : {
1851 1098 : if (n++)
1852 356 : strcat (new_help, ", ");
1853 1098 : strcat (new_help, lang_names[i]);
1854 : }
1855 742 : strcat (new_help, "]");
1856 : }
1857 : }
1858 742 : if (!avail_for_lang)
1859 : ; /* Print nothing else if the option is not available
1860 : in the current language. */
1861 1834 : else if (option->flags & CL_JOINED)
1862 : {
1863 159 : if (option->var_type == CLVC_STRING)
1864 : {
1865 10 : if (* (const char **) flag_var != NULL)
1866 8 : snprintf (new_help + strlen (new_help),
1867 8 : sizeof (new_help) - strlen (new_help),
1868 : "%s", * (const char **) flag_var);
1869 : }
1870 149 : else if (option->var_type == CLVC_ENUM)
1871 : {
1872 53 : const struct cl_enum *e = &cl_enums[option->var_enum];
1873 53 : int value;
1874 53 : const char *arg = NULL;
1875 :
1876 53 : value = e->get (flag_var);
1877 53 : enum_value_to_arg (e->values, &arg, value, lang_mask);
1878 53 : if (arg == NULL)
1879 10 : arg = _("[default]");
1880 53 : snprintf (new_help + strlen (new_help),
1881 53 : sizeof (new_help) - strlen (new_help),
1882 : "%s", arg);
1883 : }
1884 : else
1885 : {
1886 96 : if (option->cl_host_wide_int)
1887 24 : sprintf (new_help + strlen (new_help),
1888 24 : _("%llu bytes"), (unsigned long long)
1889 : *(unsigned HOST_WIDE_INT *) flag_var);
1890 : else
1891 72 : sprintf (new_help + strlen (new_help),
1892 : "%i", * (int *) flag_var);
1893 : }
1894 : }
1895 : else
1896 : print_state = true;
1897 : }
1898 : else
1899 : /* When there is no argument, print the option state only
1900 : if the option takes no argument. */
1901 254 : print_state = !(option->flags & CL_JOINED);
1902 :
1903 1153 : if (print_state)
1904 : {
1905 1903 : if (option->alias_target < N_OPTS
1906 : && option->alias_target != OPT_SPECIAL_warn_removed
1907 : && option->alias_target != OPT_SPECIAL_ignore
1908 : && option->alias_target != OPT_SPECIAL_input_file
1909 : && option->alias_target != OPT_SPECIAL_program_name
1910 : && option->alias_target != OPT_SPECIAL_unknown)
1911 : {
1912 166 : const struct cl_option *target
1913 166 : = &cl_options[option->alias_target];
1914 332 : sprintf (new_help + strlen (new_help), "%s%s",
1915 166 : target->opt_text,
1916 166 : option->alias_arg ? option->alias_arg : "");
1917 : }
1918 1737 : else if (option->alias_target == OPT_SPECIAL_ignore)
1919 20 : strcat (new_help, ("[ignored]"));
1920 : else
1921 : {
1922 : /* Print the state for an on/off option. */
1923 1717 : int ena = option_enabled (i, lang_mask, opts);
1924 1717 : if (ena > 0)
1925 792 : strcat (new_help, _("[enabled]"));
1926 925 : else if (ena == 0)
1927 824 : strcat (new_help, _("[disabled]"));
1928 : }
1929 : }
1930 :
1931 : help = new_help;
1932 : }
1933 :
1934 28646 : if (option->range_max != -1 && tab == NULL)
1935 : {
1936 4364 : char b[128];
1937 4364 : snprintf (b, sizeof (b), "<%d,%d>", option->range_min,
1938 : option->range_max);
1939 4364 : opt = concat (opt, b, NULL);
1940 4364 : len += strlen (b);
1941 : }
1942 :
1943 28646 : wrap_help (help, opt, len, columns);
1944 28646 : displayed = true;
1945 :
1946 28646 : if (option->var_type == CLVC_ENUM
1947 913 : && opts->x_help_enum_printed[option->var_enum] != 2)
1948 913 : opts->x_help_enum_printed[option->var_enum] = 1;
1949 : else
1950 : {
1951 27733 : vec<const char *> option_values
1952 27733 : = targetm_common.get_valid_option_values (i, NULL);
1953 27747 : if (!option_values.is_empty ())
1954 14 : help_tuples.safe_push (option_help_tuple (i, option_values));
1955 : }
1956 : }
1957 :
1958 135 : if (! found)
1959 : {
1960 9 : unsigned int langs = include_flags & CL_LANG_ALL;
1961 :
1962 9 : if (langs == 0)
1963 0 : printf (_(" No options with the desired characteristics were found\n"));
1964 : else
1965 : {
1966 : unsigned int i;
1967 :
1968 : /* PR 31349: Tell the user how to see all of the
1969 : options supported by a specific front end. */
1970 153 : for (i = 0; (1U << i) < CL_LANG_ALL; i ++)
1971 144 : if ((1U << i) & langs)
1972 9 : printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end.\n"),
1973 9 : lang_names[i], lang_names[i]);
1974 : }
1975 :
1976 : }
1977 126 : else if (! displayed)
1978 0 : printf (_(" All options with the desired characteristics have already been displayed\n"));
1979 :
1980 135 : putchar ('\n');
1981 :
1982 : /* Print details of enumerated option arguments, if those
1983 : enumerations have help text headings provided. If no help text
1984 : is provided, presume that the possible values are listed in the
1985 : help text for the relevant options. */
1986 12015 : for (i = 0; i < cl_enums_count; i++)
1987 : {
1988 11745 : unsigned int j, pos;
1989 :
1990 11745 : if (opts->x_help_enum_printed[i] != 1)
1991 9978 : continue;
1992 1767 : if (cl_enums[i].help == NULL)
1993 1669 : continue;
1994 98 : printf (" %s\n ", _(cl_enums[i].help));
1995 98 : pos = 4;
1996 553 : for (j = 0; cl_enums[i].values[j].arg != NULL; j++)
1997 : {
1998 357 : unsigned int len = strlen (cl_enums[i].values[j].arg);
1999 :
2000 357 : if (pos > 4 && pos + 1 + len <= columns)
2001 : {
2002 258 : printf (" %s", cl_enums[i].values[j].arg);
2003 258 : pos += 1 + len;
2004 : }
2005 : else
2006 : {
2007 1 : if (pos > 4)
2008 : {
2009 1 : printf ("\n ");
2010 1 : pos = 4;
2011 : }
2012 99 : printf ("%s", cl_enums[i].values[j].arg);
2013 99 : pos += len;
2014 : }
2015 : }
2016 98 : printf ("\n\n");
2017 98 : opts->x_help_enum_printed[i] = 2;
2018 : }
2019 :
2020 149 : for (unsigned i = 0; i < help_tuples.length (); i++)
2021 : {
2022 14 : const struct cl_option *option = cl_options + help_tuples[i].m_code;
2023 14 : printf (_(" Known valid arguments for %s option:\n "),
2024 14 : option->opt_text);
2025 1316 : for (unsigned j = 0; j < help_tuples[i].m_values.length (); j++)
2026 1288 : printf (" %s", help_tuples[i].m_values[j]);
2027 14 : printf ("\n\n");
2028 : }
2029 135 : }
2030 :
2031 : /* Display help for a specified type of option.
2032 : The options must have ALL of the INCLUDE_FLAGS set
2033 : ANY of the flags in the ANY_FLAGS set
2034 : and NONE of the EXCLUDE_FLAGS set. The current option state is in
2035 : OPTS; LANG_MASK is used for interpreting enumerated option state. */
2036 : static void
2037 135 : print_specific_help (unsigned int include_flags,
2038 : unsigned int exclude_flags,
2039 : unsigned int any_flags,
2040 : struct gcc_options *opts,
2041 : unsigned int lang_mask)
2042 : {
2043 135 : unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
2044 135 : const char * description = NULL;
2045 135 : const char * descrip_extra = "";
2046 135 : size_t i;
2047 135 : unsigned int flag;
2048 :
2049 : /* Sanity check: Make sure that we do not have more
2050 : languages than we have bits available to enumerate them. */
2051 135 : gcc_assert ((1U << cl_lang_count) <= CL_MIN_OPTION_CLASS);
2052 :
2053 : /* If we have not done so already, obtain
2054 : the desired maximum width of the output. */
2055 135 : if (opts->x_help_columns == 0)
2056 : {
2057 70 : opts->x_help_columns = get_terminal_width ();
2058 70 : if (opts->x_help_columns == INT_MAX)
2059 : /* Use a reasonable default. */
2060 26 : opts->x_help_columns = 80;
2061 : }
2062 :
2063 : /* Decide upon the title for the options that we are going to display. */
2064 3105 : for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++)
2065 : {
2066 2970 : switch (flag & include_flags)
2067 : {
2068 : case 0:
2069 : case CL_DRIVER:
2070 : break;
2071 :
2072 7 : case CL_TARGET:
2073 7 : description = _("The following options are target specific");
2074 7 : break;
2075 11 : case CL_WARNING:
2076 11 : description = _("The following options control compiler warning messages");
2077 11 : break;
2078 10 : case CL_OPTIMIZATION:
2079 10 : description = _("The following options control optimizations");
2080 10 : break;
2081 5 : case CL_COMMON:
2082 5 : description = _("The following options are language-independent");
2083 5 : break;
2084 32 : case CL_PARAMS:
2085 32 : description = _("The following options control parameters");
2086 32 : break;
2087 62 : default:
2088 62 : if (i >= cl_lang_count)
2089 : break;
2090 62 : if (exclude_flags & all_langs_mask)
2091 48 : description = _("The following options are specific to just the language ");
2092 : else
2093 14 : description = _("The following options are supported by the language ");
2094 62 : descrip_extra = lang_names [i];
2095 62 : break;
2096 : }
2097 : }
2098 :
2099 135 : if (description == NULL)
2100 : {
2101 9 : if (any_flags == 0)
2102 : {
2103 6 : if (include_flags & CL_UNDOCUMENTED)
2104 2 : description = _("The following options are not documented");
2105 4 : else if (include_flags & CL_SEPARATE)
2106 2 : description = _("The following options take separate arguments");
2107 2 : else if (include_flags & CL_JOINED)
2108 2 : description = _("The following options take joined arguments");
2109 : else
2110 : {
2111 0 : internal_error ("unrecognized %<include_flags 0x%x%> passed "
2112 : "to %<print_specific_help%>",
2113 : include_flags);
2114 : return;
2115 : }
2116 : }
2117 : else
2118 : {
2119 3 : if (any_flags & all_langs_mask)
2120 3 : description = _("The following options are language-related");
2121 : else
2122 0 : description = _("The following options are language-independent");
2123 : }
2124 : }
2125 :
2126 135 : printf ("%s%s:\n", description, descrip_extra);
2127 135 : print_filtered_help (include_flags, exclude_flags, any_flags,
2128 : opts->x_help_columns, opts, lang_mask);
2129 : }
2130 :
2131 : /* Enable FDO-related flags. */
2132 :
2133 : static void
2134 157 : enable_fdo_optimizations (struct gcc_options *opts,
2135 : struct gcc_options *opts_set,
2136 : int value, bool autofdo)
2137 : {
2138 157 : if (!autofdo)
2139 : {
2140 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_branch_probabilities, value);
2141 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
2142 : }
2143 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_value_profile_transformations,
2144 : value);
2145 :
2146 : /* Enable IPA optimizatins that makes effective use of profile data. */
2147 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
2148 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp, value);
2149 157 : if (value)
2150 : {
2151 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp_clone, 1);
2152 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, 1);
2153 : }
2154 :
2155 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_gcse_after_reload, value);
2156 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tracer, value);
2157 :
2158 : /* Loop optimizations uses profile feedback to determine their profitability
2159 : and thus it makes sense to enable them by default even at -O2.
2160 : Auto-profile, in its current form, is not very good on determining
2161 : iteration counts and thus only real profile feedback is used. */
2162 157 : if (!autofdo)
2163 : {
2164 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_loops, value);
2165 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_peel_loops, value);
2166 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_predictive_commoning, value);
2167 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_split_loops, value);
2168 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unswitch_loops, value);
2169 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_vectorize, value);
2170 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_slp_vectorize, value);
2171 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_version_loops_for_strides, value);
2172 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_vect_cost_model,
2173 : VECT_COST_MODEL_DYNAMIC);
2174 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribute_patterns,
2175 : value);
2176 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_loop_interchange, value);
2177 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_jam, value);
2178 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribution, value);
2179 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_optimize_crc, value);
2180 : }
2181 157 : }
2182 :
2183 : /* -f{,no-}sanitize{,-recover}= suboptions. */
2184 : const struct sanitizer_opts_s sanitizer_opts[] =
2185 : {
2186 : #define SANITIZER_OPT(name, flags, recover, trap) \
2187 : { #name, flags, sizeof #name - 1, recover, trap }
2188 : SANITIZER_OPT (address, (SANITIZE_ADDRESS | SANITIZE_USER_ADDRESS), true,
2189 : false),
2190 : SANITIZER_OPT (hwaddress, (SANITIZE_HWADDRESS | SANITIZE_USER_HWADDRESS),
2191 : true, false),
2192 : SANITIZER_OPT (kernel-address, (SANITIZE_ADDRESS | SANITIZE_KERNEL_ADDRESS),
2193 : true, false),
2194 : SANITIZER_OPT (kernel-hwaddress,
2195 : (SANITIZE_HWADDRESS | SANITIZE_KERNEL_HWADDRESS),
2196 : true, false),
2197 : SANITIZER_OPT (pointer-compare, SANITIZE_POINTER_COMPARE, true, false),
2198 : SANITIZER_OPT (pointer-subtract, SANITIZE_POINTER_SUBTRACT, true, false),
2199 : SANITIZER_OPT (thread, SANITIZE_THREAD, false, false),
2200 : SANITIZER_OPT (leak, SANITIZE_LEAK, false, false),
2201 : SANITIZER_OPT (shift, SANITIZE_SHIFT, true, true),
2202 : SANITIZER_OPT (shift-base, SANITIZE_SHIFT_BASE, true, true),
2203 : SANITIZER_OPT (shift-exponent, SANITIZE_SHIFT_EXPONENT, true, true),
2204 : SANITIZER_OPT (integer-divide-by-zero, SANITIZE_DIVIDE, true, true),
2205 : SANITIZER_OPT (undefined, SANITIZE_UNDEFINED, true, true),
2206 : SANITIZER_OPT (unreachable, SANITIZE_UNREACHABLE, false, true),
2207 : SANITIZER_OPT (vla-bound, SANITIZE_VLA, true, true),
2208 : SANITIZER_OPT (return, SANITIZE_RETURN, false, true),
2209 : SANITIZER_OPT (null, SANITIZE_NULL, true, true),
2210 : SANITIZER_OPT (signed-integer-overflow, SANITIZE_SI_OVERFLOW, true, true),
2211 : SANITIZER_OPT (bool, SANITIZE_BOOL, true, true),
2212 : SANITIZER_OPT (enum, SANITIZE_ENUM, true, true),
2213 : SANITIZER_OPT (float-divide-by-zero, SANITIZE_FLOAT_DIVIDE, true, true),
2214 : SANITIZER_OPT (float-cast-overflow, SANITIZE_FLOAT_CAST, true, true),
2215 : SANITIZER_OPT (bounds, SANITIZE_BOUNDS, true, true),
2216 : SANITIZER_OPT (bounds-strict, SANITIZE_BOUNDS | SANITIZE_BOUNDS_STRICT, true,
2217 : true),
2218 : SANITIZER_OPT (alignment, SANITIZE_ALIGNMENT, true, true),
2219 : SANITIZER_OPT (nonnull-attribute, SANITIZE_NONNULL_ATTRIBUTE, true, true),
2220 : SANITIZER_OPT (returns-nonnull-attribute, SANITIZE_RETURNS_NONNULL_ATTRIBUTE,
2221 : true, true),
2222 : SANITIZER_OPT (object-size, SANITIZE_OBJECT_SIZE, true, true),
2223 : SANITIZER_OPT (vptr, SANITIZE_VPTR, true, false),
2224 : SANITIZER_OPT (pointer-overflow, SANITIZE_POINTER_OVERFLOW, true, true),
2225 : SANITIZER_OPT (builtin, SANITIZE_BUILTIN, true, true),
2226 : SANITIZER_OPT (shadow-call-stack, SANITIZE_SHADOW_CALL_STACK, false, false),
2227 : SANITIZER_OPT (memtag-stack, SANITIZE_MEMTAG_STACK, false, false),
2228 : SANITIZER_OPT (all, ~sanitize_code_type (0), true, true),
2229 : #undef SANITIZER_OPT
2230 : { NULL, sanitize_code_type (0), 0UL, false, false }
2231 : };
2232 :
2233 : /* -fzero-call-used-regs= suboptions. */
2234 : const struct zero_call_used_regs_opts_s zero_call_used_regs_opts[] =
2235 : {
2236 : #define ZERO_CALL_USED_REGS_OPT(name, flags) \
2237 : { #name, flags }
2238 : ZERO_CALL_USED_REGS_OPT (skip, zero_regs_flags::SKIP),
2239 : ZERO_CALL_USED_REGS_OPT (used-gpr-arg, zero_regs_flags::USED_GPR_ARG),
2240 : ZERO_CALL_USED_REGS_OPT (used-gpr, zero_regs_flags::USED_GPR),
2241 : ZERO_CALL_USED_REGS_OPT (used-arg, zero_regs_flags::USED_ARG),
2242 : ZERO_CALL_USED_REGS_OPT (used, zero_regs_flags::USED),
2243 : ZERO_CALL_USED_REGS_OPT (all-gpr-arg, zero_regs_flags::ALL_GPR_ARG),
2244 : ZERO_CALL_USED_REGS_OPT (all-gpr, zero_regs_flags::ALL_GPR),
2245 : ZERO_CALL_USED_REGS_OPT (all-arg, zero_regs_flags::ALL_ARG),
2246 : ZERO_CALL_USED_REGS_OPT (all, zero_regs_flags::ALL),
2247 : ZERO_CALL_USED_REGS_OPT (leafy-gpr-arg, zero_regs_flags::LEAFY_GPR_ARG),
2248 : ZERO_CALL_USED_REGS_OPT (leafy-gpr, zero_regs_flags::LEAFY_GPR),
2249 : ZERO_CALL_USED_REGS_OPT (leafy-arg, zero_regs_flags::LEAFY_ARG),
2250 : ZERO_CALL_USED_REGS_OPT (leafy, zero_regs_flags::LEAFY),
2251 : #undef ZERO_CALL_USED_REGS_OPT
2252 : {NULL, 0U}
2253 : };
2254 :
2255 : /* A struct for describing a run of chars within a string. */
2256 :
2257 : class string_fragment
2258 : {
2259 : public:
2260 6 : string_fragment (const char *start, size_t len)
2261 6 : : m_start (start), m_len (len) {}
2262 :
2263 : const char *m_start;
2264 : size_t m_len;
2265 : };
2266 :
2267 : /* Specialization of edit_distance_traits for string_fragment,
2268 : for use by get_closest_sanitizer_option. */
2269 :
2270 : template <>
2271 : struct edit_distance_traits<const string_fragment &>
2272 : {
2273 6 : static size_t get_length (const string_fragment &fragment)
2274 : {
2275 6 : return fragment.m_len;
2276 : }
2277 :
2278 6 : static const char *get_string (const string_fragment &fragment)
2279 : {
2280 6 : return fragment.m_start;
2281 : }
2282 : };
2283 :
2284 : /* Given ARG, an unrecognized sanitizer option, return the best
2285 : matching sanitizer option, or NULL if there isn't one.
2286 : OPTS is array of candidate sanitizer options.
2287 : CODE is OPT_fsanitize_, OPT_fsanitize_recover_ or OPT_fsanitize_trap_.
2288 : VALUE is non-zero for the regular form of the option, zero
2289 : for the "no-" form (e.g. "-fno-sanitize-recover="). */
2290 :
2291 : static const char *
2292 6 : get_closest_sanitizer_option (const string_fragment &arg,
2293 : const struct sanitizer_opts_s *opts,
2294 : enum opt_code code, int value)
2295 : {
2296 6 : best_match <const string_fragment &, const char*> bm (arg);
2297 210 : for (int i = 0; opts[i].name != NULL; ++i)
2298 : {
2299 : /* -fsanitize=all is not valid, so don't offer it. */
2300 204 : if (code == OPT_fsanitize_
2301 170 : && opts[i].flag == ~sanitize_code_type (0)
2302 5 : && value)
2303 4 : continue;
2304 :
2305 : /* For -fsanitize-recover= (and not -fno-sanitize-recover=),
2306 : don't offer the non-recoverable options. */
2307 200 : if (code == OPT_fsanitize_recover_
2308 34 : && !opts[i].can_recover
2309 6 : && value)
2310 6 : continue;
2311 :
2312 : /* For -fsanitize-trap= (and not -fno-sanitize-trap=),
2313 : don't offer the non-trapping options. */
2314 194 : if (code == OPT_fsanitize_trap_
2315 0 : && !opts[i].can_trap
2316 0 : && value)
2317 0 : continue;
2318 :
2319 194 : bm.consider (opts[i].name);
2320 : }
2321 6 : return bm.get_best_meaningful_candidate ();
2322 : }
2323 :
2324 : /* Parse comma separated sanitizer suboptions from P for option SCODE,
2325 : adjust previous FLAGS and return new ones. If COMPLAIN is false,
2326 : don't issue diagnostics. */
2327 :
2328 : sanitize_code_type
2329 19236 : parse_sanitizer_options (const char *p, location_t loc, int scode,
2330 : sanitize_code_type flags, int value, bool complain)
2331 : {
2332 19236 : enum opt_code code = (enum opt_code) scode;
2333 :
2334 20171 : while (*p != 0)
2335 : {
2336 20171 : size_t len, i;
2337 20171 : bool found = false;
2338 20171 : const char *comma = strchr (p, ',');
2339 :
2340 20171 : if (comma == NULL)
2341 19236 : len = strlen (p);
2342 : else
2343 935 : len = comma - p;
2344 20171 : if (len == 0)
2345 : {
2346 0 : p = comma + 1;
2347 0 : continue;
2348 : }
2349 :
2350 : /* Check to see if the string matches an option class name. */
2351 188463 : for (i = 0; sanitizer_opts[i].name != NULL; ++i)
2352 188457 : if (len == sanitizer_opts[i].len
2353 29463 : && memcmp (p, sanitizer_opts[i].name, len) == 0)
2354 : {
2355 : /* Handle both -fsanitize and -fno-sanitize cases. */
2356 20165 : if (value && sanitizer_opts[i].flag == ~sanitize_code_type (0))
2357 : {
2358 42 : if (code == OPT_fsanitize_)
2359 : {
2360 3 : if (complain)
2361 3 : error_at (loc, "%<-fsanitize=all%> option is not valid");
2362 : }
2363 39 : else if (code == OPT_fsanitize_recover_)
2364 13 : flags |= ~(SANITIZE_THREAD | SANITIZE_LEAK
2365 : | SANITIZE_UNREACHABLE | SANITIZE_RETURN
2366 : | SANITIZE_SHADOW_CALL_STACK
2367 : | SANITIZE_MEMTAG_STACK);
2368 : else /* if (code == OPT_fsanitize_trap_) */
2369 26 : flags |= (SANITIZE_UNDEFINED
2370 : | SANITIZE_UNDEFINED_NONDEFAULT);
2371 : }
2372 18843 : else if (value)
2373 : {
2374 : /* Do not enable -fsanitize-recover=unreachable and
2375 : -fsanitize-recover=return if -fsanitize-recover=undefined
2376 : is selected. */
2377 18843 : if (code == OPT_fsanitize_recover_
2378 404 : && sanitizer_opts[i].flag == SANITIZE_UNDEFINED)
2379 40 : flags |= (SANITIZE_UNDEFINED
2380 : & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN));
2381 18803 : else if (code == OPT_fsanitize_trap_
2382 176 : && sanitizer_opts[i].flag == SANITIZE_VPTR)
2383 0 : error_at (loc, "%<-fsanitize-trap=%s%> is not supported",
2384 : sanitizer_opts[i].name);
2385 : else
2386 18803 : flags |= sanitizer_opts[i].flag;
2387 : }
2388 : else
2389 : {
2390 1280 : flags &= ~sanitizer_opts[i].flag;
2391 : /* Don't always clear SANITIZE_ADDRESS if it was previously
2392 : set: -fsanitize=address -fno-sanitize=kernel-address should
2393 : leave SANITIZE_ADDRESS set. */
2394 1280 : if (flags & (SANITIZE_KERNEL_ADDRESS | SANITIZE_USER_ADDRESS))
2395 754 : flags |= SANITIZE_ADDRESS;
2396 : }
2397 : found = true;
2398 : break;
2399 : }
2400 :
2401 20171 : if (! found && complain)
2402 : {
2403 6 : const char *hint
2404 6 : = get_closest_sanitizer_option (string_fragment (p, len),
2405 : sanitizer_opts, code, value);
2406 :
2407 6 : const char *suffix;
2408 6 : if (code == OPT_fsanitize_recover_)
2409 : suffix = "-recover";
2410 5 : else if (code == OPT_fsanitize_trap_)
2411 : suffix = "-trap";
2412 : else
2413 5 : suffix = "";
2414 :
2415 6 : if (hint)
2416 4 : error_at (loc,
2417 : "unrecognized argument to %<-f%ssanitize%s=%> "
2418 : "option: %q.*s; did you mean %qs?",
2419 : value ? "" : "no-",
2420 : suffix, (int) len, p, hint);
2421 : else
2422 3 : error_at (loc,
2423 : "unrecognized argument to %<-f%ssanitize%s=%> option: "
2424 : "%q.*s", value ? "" : "no-",
2425 : suffix, (int) len, p);
2426 : }
2427 :
2428 20171 : if (comma == NULL)
2429 : break;
2430 935 : p = comma + 1;
2431 : }
2432 19236 : return flags;
2433 : }
2434 :
2435 : /* Parse string values of no_sanitize attribute passed in VALUE.
2436 : Values are separated with comma. */
2437 :
2438 : sanitize_code_type
2439 280 : parse_no_sanitize_attribute (char *value)
2440 : {
2441 280 : sanitize_code_type flags = 0;
2442 280 : unsigned int i;
2443 280 : char *q = strtok (value, ",");
2444 :
2445 1070 : while (q != NULL)
2446 : {
2447 6155 : for (i = 0; sanitizer_opts[i].name != NULL; ++i)
2448 6135 : if (strcmp (sanitizer_opts[i].name, q) == 0)
2449 : {
2450 490 : flags |= sanitizer_opts[i].flag;
2451 490 : if (sanitizer_opts[i].flag == SANITIZE_UNDEFINED)
2452 57 : flags |= SANITIZE_UNDEFINED_NONDEFAULT;
2453 : break;
2454 : }
2455 :
2456 510 : if (sanitizer_opts[i].name == NULL)
2457 20 : warning (OPT_Wattributes,
2458 : "%qs attribute directive ignored", q);
2459 :
2460 510 : q = strtok (NULL, ",");
2461 : }
2462 :
2463 280 : return flags;
2464 : }
2465 :
2466 : /* Parse -fzero-call-used-regs suboptions from ARG, return the FLAGS. */
2467 :
2468 : unsigned int
2469 78 : parse_zero_call_used_regs_options (const char *arg)
2470 : {
2471 78 : unsigned int flags = 0;
2472 :
2473 : /* Check to see if the string matches a sub-option name. */
2474 468 : for (unsigned int i = 0; zero_call_used_regs_opts[i].name != NULL; ++i)
2475 468 : if (strcmp (arg, zero_call_used_regs_opts[i].name) == 0)
2476 : {
2477 78 : flags = zero_call_used_regs_opts[i].flag;
2478 78 : break;
2479 : }
2480 :
2481 78 : if (!flags)
2482 0 : error ("unrecognized argument to %<-fzero-call-used-regs=%>: %qs", arg);
2483 :
2484 78 : return flags;
2485 : }
2486 :
2487 : /* Parse -falign-NAME format for a FLAG value. Return individual
2488 : parsed integer values into RESULT_VALUES array. If REPORT_ERROR is
2489 : set, print error message at LOC location. */
2490 :
2491 : bool
2492 368015 : parse_and_check_align_values (const char *flag,
2493 : const char *name,
2494 : auto_vec<unsigned> &result_values,
2495 : bool report_error,
2496 : location_t loc)
2497 : {
2498 368015 : char *str = xstrdup (flag);
2499 1226684 : for (char *p = strtok (str, ":"); p; p = strtok (NULL, ":"))
2500 : {
2501 858669 : char *end;
2502 858669 : int v = strtol (p, &end, 10);
2503 858669 : if (*end != '\0' || v < 0)
2504 : {
2505 0 : if (report_error)
2506 0 : error_at (loc, "invalid arguments for %<-falign-%s%> option: %qs",
2507 : name, flag);
2508 :
2509 0 : return false;
2510 : }
2511 :
2512 858669 : result_values.safe_push ((unsigned)v);
2513 : }
2514 :
2515 368015 : free (str);
2516 :
2517 : /* Check that we have a correct number of values. */
2518 736030 : if (result_values.is_empty () || result_values.length () > 4)
2519 : {
2520 0 : if (report_error)
2521 0 : error_at (loc, "invalid number of arguments for %<-falign-%s%> "
2522 : "option: %qs", name, flag);
2523 : return false;
2524 : }
2525 :
2526 1226683 : for (unsigned i = 0; i < result_values.length (); i++)
2527 858669 : if (result_values[i] > MAX_CODE_ALIGN_VALUE)
2528 : {
2529 1 : if (report_error)
2530 1 : error_at (loc, "%<-falign-%s%> is not between 0 and %d",
2531 : name, MAX_CODE_ALIGN_VALUE);
2532 : return false;
2533 : }
2534 :
2535 : return true;
2536 : }
2537 :
2538 : /* Check that alignment value FLAG for -falign-NAME is valid at a given
2539 : location LOC. OPT_STR points to the stored -falign-NAME=argument and
2540 : OPT_FLAG points to the associated -falign-NAME on/off flag. */
2541 :
2542 : static void
2543 20 : check_alignment_argument (location_t loc, const char *flag, const char *name,
2544 : int *opt_flag, const char **opt_str)
2545 : {
2546 20 : auto_vec<unsigned> align_result;
2547 20 : parse_and_check_align_values (flag, name, align_result, true, loc);
2548 :
2549 40 : if (align_result.length() >= 1 && align_result[0] == 0)
2550 : {
2551 0 : *opt_flag = 1;
2552 0 : *opt_str = NULL;
2553 : }
2554 20 : }
2555 :
2556 : /* Parse argument of -fpatchable-function-entry option ARG and store
2557 : corresponding values to PATCH_AREA_SIZE and PATCH_AREA_START.
2558 : If REPORT_ERROR is set to true, generate error for a problematic
2559 : option arguments. */
2560 :
2561 : void
2562 1810050 : parse_and_check_patch_area (const char *arg, bool report_error,
2563 : HOST_WIDE_INT *patch_area_size,
2564 : HOST_WIDE_INT *patch_area_start)
2565 : {
2566 1810050 : *patch_area_size = 0;
2567 1810050 : *patch_area_start = 0;
2568 :
2569 1810050 : if (arg == NULL)
2570 : return;
2571 :
2572 115 : char *patch_area_arg = xstrdup (arg);
2573 115 : char *comma = strchr (patch_area_arg, ',');
2574 115 : if (comma)
2575 : {
2576 52 : *comma = '\0';
2577 52 : *patch_area_size = integral_argument (patch_area_arg);
2578 52 : *patch_area_start = integral_argument (comma + 1);
2579 : }
2580 : else
2581 63 : *patch_area_size = integral_argument (patch_area_arg);
2582 :
2583 115 : if (*patch_area_size < 0
2584 115 : || *patch_area_size > USHRT_MAX
2585 107 : || *patch_area_start < 0
2586 107 : || *patch_area_start > USHRT_MAX
2587 99 : || *patch_area_size < *patch_area_start)
2588 16 : if (report_error)
2589 8 : error ("invalid arguments for %<-fpatchable-function-entry%>");
2590 :
2591 115 : free (patch_area_arg);
2592 : }
2593 :
2594 : /* Print options enabled by -fhardened. Keep this in sync with the manual! */
2595 :
2596 : static void
2597 1 : print_help_hardened ()
2598 : {
2599 1 : printf ("%s\n", "The following options are enabled by -fhardened:");
2600 : /* Unfortunately, I can't seem to use targetm.fortify_source_default_level
2601 : here. */
2602 1 : printf (" %s\n", "-D_FORTIFY_SOURCE=3 (or =2 for glibc < 2.35)");
2603 1 : printf (" %s\n", "-D_GLIBCXX_ASSERTIONS");
2604 1 : printf (" %s\n", "-ftrivial-auto-var-init=zero");
2605 : #ifdef HAVE_LD_PIE
2606 1 : printf (" %s %s\n", "-fPIE", "-pie");
2607 : #endif
2608 1 : if (HAVE_LD_NOW_SUPPORT)
2609 1 : printf (" %s\n", "-Wl,-z,now");
2610 1 : if (HAVE_LD_RELRO_SUPPORT)
2611 1 : printf (" %s\n", "-Wl,-z,relro");
2612 1 : printf (" %s\n", "-fstack-protector-strong");
2613 1 : printf (" %s\n", "-fstack-clash-protection");
2614 1 : printf (" %s\n", "-fcf-protection=full");
2615 1 : putchar ('\n');
2616 1 : }
2617 :
2618 : /* Print help when OPT__help_ is set. */
2619 :
2620 : void
2621 73 : print_help (struct gcc_options *opts, unsigned int lang_mask,
2622 : const char *help_option_argument)
2623 : {
2624 73 : const char *a = help_option_argument;
2625 73 : unsigned int include_flags = 0;
2626 : /* Note - by default we include undocumented options when listing
2627 : specific classes. If you only want to see documented options
2628 : then add ",^undocumented" to the --help= option. E.g.:
2629 :
2630 : --help=target,^undocumented */
2631 73 : unsigned int exclude_flags = 0;
2632 :
2633 73 : if (lang_mask == CL_DRIVER)
2634 0 : return;
2635 :
2636 : /* Walk along the argument string, parsing each word in turn.
2637 : The format is:
2638 : arg = [^]{word}[,{arg}]
2639 : word = {optimizers|target|warnings|undocumented|
2640 : params|common|<language>} */
2641 83 : while (*a != 0)
2642 : {
2643 83 : static const struct
2644 : {
2645 : const char *string;
2646 : unsigned int flag;
2647 : }
2648 : specifics[] =
2649 : {
2650 : { "optimizers", CL_OPTIMIZATION },
2651 : { "target", CL_TARGET },
2652 : { "warnings", CL_WARNING },
2653 : { "undocumented", CL_UNDOCUMENTED },
2654 : { "params", CL_PARAMS },
2655 : { "joined", CL_JOINED },
2656 : { "separate", CL_SEPARATE },
2657 : { "common", CL_COMMON },
2658 : { NULL, 0 }
2659 : };
2660 83 : unsigned int *pflags;
2661 83 : const char *comma;
2662 83 : unsigned int lang_flag, specific_flag;
2663 83 : unsigned int len;
2664 83 : unsigned int i;
2665 :
2666 83 : if (*a == '^')
2667 : {
2668 8 : ++a;
2669 8 : if (*a == '\0')
2670 : {
2671 1 : error ("missing argument to %qs", "--help=^");
2672 1 : break;
2673 : }
2674 7 : pflags = &exclude_flags;
2675 : }
2676 : else
2677 75 : pflags = &include_flags;
2678 :
2679 82 : comma = strchr (a, ',');
2680 82 : if (comma == NULL)
2681 72 : len = strlen (a);
2682 : else
2683 10 : len = comma - a;
2684 82 : if (len == 0)
2685 : {
2686 0 : a = comma + 1;
2687 0 : continue;
2688 : }
2689 :
2690 : /* Check to see if the string matches an option class name. */
2691 429 : for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++)
2692 416 : if (strncasecmp (a, specifics[i].string, len) == 0)
2693 : {
2694 69 : specific_flag = specifics[i].flag;
2695 69 : break;
2696 : }
2697 :
2698 : /* Check to see if the string matches a language name.
2699 : Note - we rely upon the alpha-sorted nature of the entries in
2700 : the lang_names array, specifically that shorter names appear
2701 : before their longer variants. (i.e. C before C++). That way
2702 : when we are attempting to match --help=c for example we will
2703 : match with C first and not C++. */
2704 1275 : for (i = 0, lang_flag = 0; i < cl_lang_count; i++)
2705 1207 : if (strncasecmp (a, lang_names[i], len) == 0)
2706 : {
2707 14 : lang_flag = 1U << i;
2708 14 : break;
2709 : }
2710 :
2711 82 : if (specific_flag != 0)
2712 : {
2713 69 : if (lang_flag == 0)
2714 67 : *pflags |= specific_flag;
2715 : else
2716 : {
2717 : /* The option's argument matches both the start of a
2718 : language name and the start of an option class name.
2719 : We have a special case for when the user has
2720 : specified "--help=c", but otherwise we have to issue
2721 : a warning. */
2722 2 : if (strncasecmp (a, "c", len) == 0)
2723 2 : *pflags |= lang_flag;
2724 : else
2725 0 : warning (0,
2726 : "%<--help%> argument %q.*s is ambiguous, "
2727 : "please be more specific",
2728 : len, a);
2729 : }
2730 : }
2731 13 : else if (lang_flag != 0)
2732 12 : *pflags |= lang_flag;
2733 1 : else if (strncasecmp (a, "hardened", len) == 0)
2734 1 : print_help_hardened ();
2735 : else
2736 0 : warning (0,
2737 : "unrecognized argument to %<--help=%> option: %q.*s",
2738 : len, a);
2739 :
2740 82 : if (comma == NULL)
2741 : break;
2742 10 : a = comma + 1;
2743 : }
2744 :
2745 : /* We started using PerFunction/Optimization for parameters and
2746 : a warning. We should exclude these from optimization options. */
2747 73 : if (include_flags & CL_OPTIMIZATION)
2748 7 : exclude_flags |= CL_WARNING;
2749 73 : if (!(include_flags & CL_PARAMS))
2750 44 : exclude_flags |= CL_PARAMS;
2751 :
2752 73 : if (include_flags)
2753 69 : print_specific_help (include_flags, exclude_flags, 0, opts,
2754 : lang_mask);
2755 : }
2756 :
2757 : /* Handle target- and language-independent options. Return zero to
2758 : generate an "unknown option" message. Only options that need
2759 : extra handling need to be listed here; if you simply want
2760 : DECODED->value assigned to a variable, it happens automatically. */
2761 :
2762 : bool
2763 82792027 : common_handle_option (struct gcc_options *opts,
2764 : struct gcc_options *opts_set,
2765 : const struct cl_decoded_option *decoded,
2766 : unsigned int lang_mask, int kind ATTRIBUTE_UNUSED,
2767 : location_t loc,
2768 : const struct cl_option_handlers *handlers,
2769 : diagnostics::context *dc,
2770 : void (*target_option_override_hook) (void))
2771 : {
2772 82792027 : size_t scode = decoded->opt_index;
2773 82792027 : const char *arg = decoded->arg;
2774 82792027 : HOST_WIDE_INT value = decoded->value;
2775 82792027 : enum opt_code code = (enum opt_code) scode;
2776 :
2777 82792027 : gcc_assert (decoded->canonical_option_num_elements <= 2);
2778 :
2779 82792027 : switch (code)
2780 : {
2781 7 : case OPT__help:
2782 7 : {
2783 7 : unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
2784 7 : unsigned int undoc_mask;
2785 7 : unsigned int i;
2786 :
2787 7 : if (lang_mask == CL_DRIVER)
2788 : break;
2789 :
2790 0 : undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings)
2791 3 : ? 0
2792 : : CL_UNDOCUMENTED);
2793 3 : target_option_override_hook ();
2794 : /* First display any single language specific options. */
2795 54 : for (i = 0; i < cl_lang_count; i++)
2796 48 : print_specific_help
2797 48 : (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0, opts,
2798 : lang_mask);
2799 : /* Next display any multi language specific options. */
2800 3 : print_specific_help (0, undoc_mask, all_langs_mask, opts, lang_mask);
2801 : /* Then display any remaining, non-language options. */
2802 24 : for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1)
2803 18 : if (i != CL_DRIVER)
2804 15 : print_specific_help (i, undoc_mask, 0, opts, lang_mask);
2805 3 : opts->x_exit_after_options = true;
2806 3 : break;
2807 : }
2808 :
2809 0 : case OPT__target_help:
2810 0 : if (lang_mask == CL_DRIVER)
2811 : break;
2812 :
2813 0 : target_option_override_hook ();
2814 0 : print_specific_help (CL_TARGET, 0, 0, opts, lang_mask);
2815 0 : opts->x_exit_after_options = true;
2816 0 : break;
2817 :
2818 146 : case OPT__help_:
2819 146 : {
2820 146 : help_option_arguments.safe_push (arg);
2821 146 : opts->x_exit_after_options = true;
2822 146 : break;
2823 : }
2824 :
2825 78 : case OPT__version:
2826 78 : if (lang_mask == CL_DRIVER)
2827 : break;
2828 :
2829 0 : opts->x_exit_after_options = true;
2830 0 : break;
2831 :
2832 : case OPT__completion_:
2833 : break;
2834 :
2835 17964 : case OPT_fsanitize_:
2836 17964 : opts_set->x_flag_sanitize = true;
2837 17964 : opts->x_flag_sanitize
2838 17964 : = parse_sanitizer_options (arg, loc, code,
2839 : opts->x_flag_sanitize, value, true);
2840 :
2841 : /* Kernel ASan implies normal ASan but does not yet support
2842 : all features. */
2843 17964 : if (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS)
2844 : {
2845 372 : SET_OPTION_IF_UNSET (opts, opts_set,
2846 : param_asan_instrumentation_with_call_threshold,
2847 : 0);
2848 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_globals, 0);
2849 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_stack, 0);
2850 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_protect_allocas, 0);
2851 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_use_after_return, 0);
2852 : }
2853 17964 : if (opts->x_flag_sanitize & SANITIZE_KERNEL_HWADDRESS)
2854 : {
2855 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2856 : param_hwasan_instrument_stack, 0);
2857 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2858 : param_hwasan_random_frame_tag, 0);
2859 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2860 : param_hwasan_instrument_allocas, 0);
2861 : }
2862 : break;
2863 :
2864 1070 : case OPT_fsanitize_recover_:
2865 1070 : opts->x_flag_sanitize_recover
2866 1070 : = parse_sanitizer_options (arg, loc, code,
2867 : opts->x_flag_sanitize_recover, value, true);
2868 1070 : break;
2869 :
2870 202 : case OPT_fsanitize_trap_:
2871 202 : opts->x_flag_sanitize_trap
2872 202 : = parse_sanitizer_options (arg, loc, code,
2873 : opts->x_flag_sanitize_trap, value, true);
2874 202 : break;
2875 :
2876 : case OPT_fasan_shadow_offset_:
2877 : /* Deferred. */
2878 : break;
2879 :
2880 68 : case OPT_fsanitize_address_use_after_scope:
2881 68 : opts->x_flag_sanitize_address_use_after_scope = value;
2882 68 : break;
2883 :
2884 6 : case OPT_fsanitize_recover:
2885 6 : if (value)
2886 0 : opts->x_flag_sanitize_recover
2887 0 : |= (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT)
2888 : & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN);
2889 : else
2890 6 : opts->x_flag_sanitize_recover
2891 6 : &= ~(SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2892 : break;
2893 :
2894 238 : case OPT_fsanitize_trap:
2895 238 : if (value)
2896 238 : opts->x_flag_sanitize_trap
2897 238 : |= (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2898 : else
2899 0 : opts->x_flag_sanitize_trap
2900 0 : &= ~(SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2901 : break;
2902 :
2903 : case OPT_O:
2904 : case OPT_Os:
2905 : case OPT_Ofast:
2906 : case OPT_Og:
2907 : case OPT_Oz:
2908 : /* Currently handled in a prescan. */
2909 : break;
2910 :
2911 100 : case OPT_Wattributes_:
2912 100 : if (lang_mask == CL_DRIVER)
2913 : break;
2914 :
2915 100 : if (value)
2916 : {
2917 0 : error_at (loc, "arguments ignored for %<-Wattributes=%>; use "
2918 : "%<-Wno-attributes=%> instead");
2919 0 : break;
2920 : }
2921 100 : else if (arg[strlen (arg) - 1] == ',')
2922 : {
2923 0 : error_at (loc, "trailing %<,%> in arguments for "
2924 : "%<-Wno-attributes=%>");
2925 0 : break;
2926 : }
2927 :
2928 100 : add_comma_separated_to_vector (&opts->x_flag_ignored_attributes, arg);
2929 100 : break;
2930 :
2931 4363 : case OPT_Werror:
2932 4363 : dc->set_warning_as_error_requested (value);
2933 4363 : break;
2934 :
2935 7069 : case OPT_Werror_:
2936 7069 : if (lang_mask == CL_DRIVER)
2937 : break;
2938 :
2939 7069 : enable_warning_as_error (arg, value, lang_mask, handlers,
2940 : opts, opts_set, loc, dc);
2941 7069 : break;
2942 :
2943 8 : case OPT_Wfatal_errors:
2944 8 : dc->set_fatal_errors (value);
2945 8 : break;
2946 :
2947 12 : case OPT_Wstack_usage_:
2948 12 : opts->x_flag_stack_usage_info = value != -1;
2949 12 : break;
2950 :
2951 57 : case OPT_Wstrict_aliasing:
2952 57 : set_Wstrict_aliasing (opts, value);
2953 57 : break;
2954 :
2955 37 : case OPT_Wsystem_headers:
2956 37 : dc->m_warn_system_headers = value;
2957 37 : break;
2958 :
2959 0 : case OPT_aux_info:
2960 0 : opts->x_flag_gen_aux_info = 1;
2961 0 : break;
2962 :
2963 1704 : case OPT_d:
2964 1704 : decode_d_option (arg, opts, loc, dc);
2965 1704 : break;
2966 :
2967 : case OPT_fcall_used_:
2968 : case OPT_fcall_saved_:
2969 : /* Deferred. */
2970 : break;
2971 :
2972 : case OPT_fdbg_cnt_:
2973 : /* Deferred. */
2974 : break;
2975 :
2976 : case OPT_fdebug_prefix_map_:
2977 : case OPT_ffile_prefix_map_:
2978 : case OPT_fprofile_prefix_map_:
2979 : /* Deferred. */
2980 : break;
2981 :
2982 0 : case OPT_fcanon_prefix_map:
2983 0 : flag_canon_prefix_map = value;
2984 0 : break;
2985 :
2986 1 : case OPT_fcallgraph_info:
2987 1 : opts->x_flag_callgraph_info = CALLGRAPH_INFO_NAKED;
2988 1 : break;
2989 :
2990 0 : case OPT_fcallgraph_info_:
2991 0 : {
2992 0 : char *my_arg, *p;
2993 0 : my_arg = xstrdup (arg);
2994 0 : p = strtok (my_arg, ",");
2995 0 : while (p)
2996 : {
2997 0 : if (strcmp (p, "su") == 0)
2998 : {
2999 0 : opts->x_flag_callgraph_info |= CALLGRAPH_INFO_STACK_USAGE;
3000 0 : opts->x_flag_stack_usage_info = true;
3001 : }
3002 0 : else if (strcmp (p, "da") == 0)
3003 0 : opts->x_flag_callgraph_info |= CALLGRAPH_INFO_DYNAMIC_ALLOC;
3004 : else
3005 : return 0;
3006 0 : p = strtok (NULL, ",");
3007 : }
3008 0 : free (my_arg);
3009 : }
3010 0 : break;
3011 :
3012 432 : case OPT_fdiagnostics_show_location_:
3013 432 : dc->set_prefixing_rule ((diagnostic_prefixing_rule_t) value);
3014 432 : break;
3015 :
3016 274717 : case OPT_fdiagnostics_show_caret:
3017 274717 : dc->get_source_printing_options ().enabled = value;
3018 274717 : break;
3019 :
3020 274717 : case OPT_fdiagnostics_show_event_links:
3021 274717 : dc->get_source_printing_options ().show_event_links_p = value;
3022 274717 : break;
3023 :
3024 1 : case OPT_fdiagnostics_show_labels:
3025 1 : dc->get_source_printing_options ().show_labels_p = value;
3026 1 : break;
3027 :
3028 274717 : case OPT_fdiagnostics_show_line_numbers:
3029 274717 : dc->get_source_printing_options ().show_line_numbers_p = value;
3030 274717 : break;
3031 :
3032 553623 : case OPT_fdiagnostics_color_:
3033 553623 : diagnostic_color_init (dc, value);
3034 553623 : break;
3035 :
3036 541878 : case OPT_fdiagnostics_urls_:
3037 541878 : diagnostic_urls_init (dc, value);
3038 541878 : break;
3039 :
3040 90 : case OPT_fdiagnostics_format_:
3041 90 : {
3042 90 : const char *basename = get_diagnostic_file_output_basename (*opts);
3043 90 : gcc_assert (dc);
3044 90 : diagnostics::output_format_init (*dc,
3045 : opts->x_main_input_filename, basename,
3046 : (enum diagnostics_output_format)value,
3047 90 : opts->x_flag_diagnostics_json_formatting);
3048 90 : break;
3049 : }
3050 :
3051 36 : case OPT_fdiagnostics_add_output_:
3052 36 : handle_OPT_fdiagnostics_add_output_ (*opts, *dc, arg, loc);
3053 36 : break;
3054 :
3055 14 : case OPT_fdiagnostics_set_output_:
3056 14 : handle_OPT_fdiagnostics_set_output_ (*opts, *dc, arg, loc);
3057 14 : break;
3058 :
3059 604374 : case OPT_fdiagnostics_text_art_charset_:
3060 604374 : dc->set_text_art_charset ((enum diagnostic_text_art_charset)value);
3061 604374 : break;
3062 :
3063 4 : case OPT_fdiagnostics_parseable_fixits:
3064 4 : dc->set_extra_output_kind (value
3065 : ? EXTRA_DIAGNOSTIC_OUTPUT_fixits_v1
3066 : : EXTRA_DIAGNOSTIC_OUTPUT_none);
3067 4 : break;
3068 :
3069 28 : case OPT_fdiagnostics_column_unit_:
3070 28 : dc->get_column_options ().m_column_unit
3071 28 : = (enum diagnostics_column_unit)value;
3072 28 : break;
3073 :
3074 12 : case OPT_fdiagnostics_column_origin_:
3075 12 : dc->get_column_options ().m_column_origin = value;
3076 12 : break;
3077 :
3078 4 : case OPT_fdiagnostics_escape_format_:
3079 4 : dc->set_escape_format ((enum diagnostics_escape_format)value);
3080 4 : break;
3081 :
3082 5 : case OPT_fdiagnostics_show_highlight_colors:
3083 5 : dc->set_show_highlight_colors (value);
3084 5 : break;
3085 :
3086 0 : case OPT_fdiagnostics_show_cwe:
3087 0 : dc->set_show_cwe (value);
3088 0 : break;
3089 :
3090 0 : case OPT_fdiagnostics_show_rules:
3091 0 : dc->set_show_rules (value);
3092 0 : break;
3093 :
3094 305620 : case OPT_fdiagnostics_path_format_:
3095 305620 : dc->set_path_format ((enum diagnostic_path_format)value);
3096 305620 : break;
3097 :
3098 76 : case OPT_fdiagnostics_show_path_depths:
3099 76 : dc->set_show_path_depths (value);
3100 76 : break;
3101 :
3102 54 : case OPT_fdiagnostics_show_option:
3103 54 : dc->set_show_option_requested (value);
3104 54 : break;
3105 :
3106 274717 : case OPT_fdiagnostics_show_nesting:
3107 274717 : dc->set_show_nesting (value);
3108 274717 : break;
3109 :
3110 0 : case OPT_fdiagnostics_show_nesting_locations:
3111 0 : dc->set_show_nesting_locations (value);
3112 0 : break;
3113 :
3114 0 : case OPT_fdiagnostics_show_nesting_levels:
3115 0 : dc->set_show_nesting_levels (value);
3116 0 : break;
3117 :
3118 1 : case OPT_fdiagnostics_minimum_margin_width_:
3119 1 : dc->get_source_printing_options ().min_margin_width = value;
3120 1 : break;
3121 :
3122 : case OPT_fdump_:
3123 : /* Deferred. */
3124 : break;
3125 :
3126 641298 : case OPT_ffast_math:
3127 641298 : set_fast_math_flags (opts, value);
3128 641298 : break;
3129 :
3130 367 : case OPT_funsafe_math_optimizations:
3131 367 : set_unsafe_math_optimizations_flags (opts, value);
3132 367 : break;
3133 :
3134 : case OPT_ffixed_:
3135 : /* Deferred. */
3136 : break;
3137 :
3138 9 : case OPT_finline_limit_:
3139 9 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_single,
3140 : value / 2);
3141 9 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_auto,
3142 : value / 2);
3143 : break;
3144 :
3145 1 : case OPT_finstrument_functions_exclude_function_list_:
3146 1 : add_comma_separated_to_vector
3147 1 : (&opts->x_flag_instrument_functions_exclude_functions, arg);
3148 1 : break;
3149 :
3150 1 : case OPT_finstrument_functions_exclude_file_list_:
3151 1 : add_comma_separated_to_vector
3152 1 : (&opts->x_flag_instrument_functions_exclude_files, arg);
3153 1 : break;
3154 :
3155 107578 : case OPT_fmessage_length_:
3156 107578 : pp_set_line_maximum_length (dc->get_reference_printer (), value);
3157 107578 : dc->set_caret_max_width (value);
3158 107578 : break;
3159 :
3160 : case OPT_fopt_info:
3161 : case OPT_fopt_info_:
3162 : /* Deferred. */
3163 : break;
3164 :
3165 : case OPT_foffload_options_:
3166 : /* Deferred. */
3167 : break;
3168 :
3169 0 : case OPT_foffload_abi_:
3170 0 : case OPT_foffload_abi_host_opts_:
3171 : #ifdef ACCEL_COMPILER
3172 : /* Handled in the 'mkoffload's. */
3173 : #else
3174 0 : error_at (loc,
3175 : "%qs option can be specified only for offload compiler",
3176 : (code == OPT_foffload_abi_) ? "-foffload-abi"
3177 : : "-foffload-abi-host-opts");
3178 : #endif
3179 0 : break;
3180 :
3181 1 : case OPT_fpack_struct_:
3182 1 : if (value <= 0 || (value & (value - 1)) || value > 16)
3183 0 : error_at (loc,
3184 : "structure alignment must be a small power of two, not %wu",
3185 : value);
3186 : else
3187 1 : opts->x_initial_max_fld_align = value;
3188 : break;
3189 :
3190 : case OPT_fplugin_:
3191 : case OPT_fplugin_arg_:
3192 : /* Deferred. */
3193 : break;
3194 :
3195 0 : case OPT_fprofile_use_:
3196 0 : opts->x_profile_data_prefix = xstrdup (arg);
3197 0 : opts->x_flag_profile_use = true;
3198 0 : value = true;
3199 : /* No break here - do -fprofile-use processing. */
3200 : /* FALLTHRU */
3201 157 : case OPT_fprofile_use:
3202 157 : enable_fdo_optimizations (opts, opts_set, value, false);
3203 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_reorder_functions,
3204 : value);
3205 : /* Indirect call profiling should do all useful transformations
3206 : speculative devirtualization does. */
3207 157 : if (opts->x_flag_value_profile_transformations)
3208 : {
3209 157 : SET_OPTION_IF_UNSET (opts, opts_set, flag_devirtualize_speculatively,
3210 : false);
3211 157 : SET_OPTION_IF_UNSET (opts, opts_set,
3212 : flag_speculatively_call_stored_functions, false);
3213 : }
3214 : break;
3215 :
3216 0 : case OPT_fauto_profile_:
3217 0 : opts->x_auto_profile_file = xstrdup (arg);
3218 0 : opts->x_flag_auto_profile = true;
3219 0 : value = true;
3220 : /* No break here - do -fauto-profile processing. */
3221 : /* FALLTHRU */
3222 0 : case OPT_fauto_profile:
3223 0 : enable_fdo_optimizations (opts, opts_set, value, true);
3224 0 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_correction, value);
3225 : break;
3226 :
3227 2 : case OPT_fprofile_generate_:
3228 2 : opts->x_profile_data_prefix = xstrdup (arg);
3229 2 : value = true;
3230 : /* No break here - do -fprofile-generate processing. */
3231 : /* FALLTHRU */
3232 258 : case OPT_fprofile_generate:
3233 258 : SET_OPTION_IF_UNSET (opts, opts_set, profile_arc_flag, value);
3234 258 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
3235 258 : SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
3236 258 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, value);
3237 : break;
3238 :
3239 2 : case OPT_fprofile_info_section:
3240 2 : opts->x_profile_info_section = ".gcov_info";
3241 2 : break;
3242 :
3243 36 : case OPT_fpatchable_function_entry_:
3244 36 : {
3245 36 : HOST_WIDE_INT patch_area_size, patch_area_start;
3246 36 : parse_and_check_patch_area (arg, true, &patch_area_size,
3247 : &patch_area_start);
3248 : }
3249 36 : break;
3250 :
3251 : case OPT_ftree_vectorize:
3252 : /* Automatically sets -ftree-loop-vectorize and
3253 : -ftree-slp-vectorize. Nothing more to do here. */
3254 : break;
3255 78 : case OPT_fzero_call_used_regs_:
3256 78 : opts->x_flag_zero_call_used_regs
3257 78 : = parse_zero_call_used_regs_options (arg);
3258 78 : break;
3259 :
3260 13428 : case OPT_fshow_column:
3261 13428 : dc->m_show_column = value;
3262 13428 : break;
3263 :
3264 0 : case OPT_frandom_seed:
3265 : /* The real switch is -fno-random-seed. */
3266 0 : if (value)
3267 : return false;
3268 : /* Deferred. */
3269 : break;
3270 :
3271 : case OPT_frandom_seed_:
3272 : /* Deferred. */
3273 : break;
3274 :
3275 : case OPT_fsched_verbose_:
3276 : #ifdef INSN_SCHEDULING
3277 : /* Handled with Var in common.opt. */
3278 : break;
3279 : #else
3280 : return false;
3281 : #endif
3282 :
3283 1 : case OPT_fsched_stalled_insns_:
3284 1 : opts->x_flag_sched_stalled_insns = value;
3285 1 : if (opts->x_flag_sched_stalled_insns == 0)
3286 1 : opts->x_flag_sched_stalled_insns = -1;
3287 : break;
3288 :
3289 0 : case OPT_fsched_stalled_insns_dep_:
3290 0 : opts->x_flag_sched_stalled_insns_dep = value;
3291 0 : break;
3292 :
3293 68 : case OPT_fstack_check_:
3294 68 : if (!strcmp (arg, "no"))
3295 0 : opts->x_flag_stack_check = NO_STACK_CHECK;
3296 68 : else if (!strcmp (arg, "generic"))
3297 : /* This is the old stack checking method. */
3298 35 : opts->x_flag_stack_check = STACK_CHECK_BUILTIN
3299 : ? FULL_BUILTIN_STACK_CHECK
3300 : : GENERIC_STACK_CHECK;
3301 33 : else if (!strcmp (arg, "specific"))
3302 : /* This is the new stack checking method. */
3303 33 : opts->x_flag_stack_check = STACK_CHECK_BUILTIN
3304 : ? FULL_BUILTIN_STACK_CHECK
3305 : : STACK_CHECK_STATIC_BUILTIN
3306 : ? STATIC_BUILTIN_STACK_CHECK
3307 : : GENERIC_STACK_CHECK;
3308 : else
3309 0 : warning_at (loc, 0, "unknown stack check parameter %qs", arg);
3310 : break;
3311 :
3312 1 : case OPT_fstack_limit:
3313 : /* The real switch is -fno-stack-limit. */
3314 1 : if (value)
3315 : return false;
3316 : /* Deferred. */
3317 : break;
3318 :
3319 : case OPT_fstack_limit_register_:
3320 : case OPT_fstack_limit_symbol_:
3321 : /* Deferred. */
3322 : break;
3323 :
3324 558 : case OPT_fstack_usage:
3325 558 : opts->x_flag_stack_usage = value;
3326 558 : opts->x_flag_stack_usage_info = value != 0;
3327 558 : break;
3328 :
3329 128831 : case OPT_g:
3330 128831 : set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set,
3331 : loc);
3332 128831 : break;
3333 :
3334 0 : case OPT_gcodeview:
3335 0 : set_debug_level (CODEVIEW_DEBUG, false, arg, opts, opts_set, loc);
3336 0 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3337 0 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3338 : break;
3339 :
3340 156 : case OPT_gbtf:
3341 156 : set_debug_level (BTF_DEBUG, false, arg, opts, opts_set, loc);
3342 : /* set the debug level to level 2, but if already at level 3,
3343 : don't lower it. */
3344 156 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3345 156 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3346 : break;
3347 :
3348 495 : case OPT_gctf:
3349 495 : set_debug_level (CTF_DEBUG, false, arg, opts, opts_set, loc);
3350 : /* CTF generation feeds off DWARF dies. For optimal CTF, switch debug
3351 : info level to 2. If off or at level 1, set it to level 2, but if
3352 : already at level 3, don't lower it. */
3353 495 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL
3354 489 : && opts->x_ctf_debug_info_level > CTFINFO_LEVEL_NONE)
3355 487 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3356 : break;
3357 :
3358 249 : case OPT_gdwarf:
3359 249 : if (arg && strlen (arg) != 0)
3360 : {
3361 0 : error_at (loc, "%<-gdwarf%s%> is ambiguous; "
3362 : "use %<-gdwarf-%s%> for DWARF version "
3363 : "or %<-gdwarf%> %<-g%s%> for debug level", arg, arg, arg);
3364 0 : break;
3365 : }
3366 : else
3367 249 : value = opts->x_dwarf_version;
3368 :
3369 : /* FALLTHRU */
3370 4739 : case OPT_gdwarf_:
3371 4739 : if (value < 2 || value > 5)
3372 0 : error_at (loc, "dwarf version %wu is not supported", value);
3373 : else
3374 4739 : opts->x_dwarf_version = value;
3375 4739 : set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc);
3376 4739 : break;
3377 :
3378 20 : case OPT_ggdb:
3379 20 : set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc);
3380 20 : break;
3381 :
3382 0 : case OPT_gvms:
3383 0 : set_debug_level (VMS_DEBUG, false, arg, opts, opts_set, loc);
3384 0 : break;
3385 :
3386 : case OPT_gz:
3387 : case OPT_gz_:
3388 : /* Handled completely via specs. */
3389 : break;
3390 :
3391 67268 : case OPT_pedantic_errors:
3392 67268 : dc->m_pedantic_errors = 1;
3393 67268 : control_warning_option (OPT_Wpedantic,
3394 : static_cast<int> (diagnostics::kind::error),
3395 : NULL, value,
3396 : loc, lang_mask,
3397 : handlers, opts, opts_set,
3398 : dc);
3399 67268 : break;
3400 :
3401 24900 : case OPT_flto:
3402 24900 : opts->x_flag_lto = value ? "" : NULL;
3403 24900 : break;
3404 :
3405 13 : case OPT_flto_:
3406 13 : if (strcmp (arg, "none") != 0
3407 13 : && strcmp (arg, "jobserver") != 0
3408 13 : && strcmp (arg, "auto") != 0
3409 1 : && atoi (arg) == 0)
3410 1 : error_at (loc,
3411 : "unrecognized argument to %<-flto=%> option: %qs", arg);
3412 : break;
3413 :
3414 44530 : case OPT_w:
3415 44530 : dc->m_inhibit_warnings = true;
3416 44530 : break;
3417 :
3418 44 : case OPT_fmax_errors_:
3419 44 : dc->set_max_errors (value);
3420 44 : break;
3421 :
3422 : case OPT_fuse_ld_bfd:
3423 : case OPT_fuse_ld_gold:
3424 : case OPT_fuse_ld_lld:
3425 : case OPT_fuse_ld_mold:
3426 : case OPT_fuse_ld_wild:
3427 : case OPT_fuse_linker_plugin:
3428 : /* No-op. Used by the driver and passed to us because it starts with f.*/
3429 : break;
3430 :
3431 513 : case OPT_fwrapv:
3432 513 : if (value)
3433 507 : opts->x_flag_trapv = 0;
3434 : break;
3435 :
3436 140 : case OPT_ftrapv:
3437 140 : if (value)
3438 140 : opts->x_flag_wrapv = 0;
3439 : break;
3440 :
3441 193 : case OPT_fstrict_overflow:
3442 193 : opts->x_flag_wrapv = !value;
3443 193 : opts->x_flag_wrapv_pointer = !value;
3444 193 : if (!value)
3445 63 : opts->x_flag_trapv = 0;
3446 : break;
3447 :
3448 640329 : case OPT_fipa_icf:
3449 640329 : opts->x_flag_ipa_icf_functions = value;
3450 640329 : opts->x_flag_ipa_icf_variables = value;
3451 640329 : break;
3452 :
3453 2 : case OPT_falign_loops_:
3454 2 : check_alignment_argument (loc, arg, "loops",
3455 : &opts->x_flag_align_loops,
3456 : &opts->x_str_align_loops);
3457 2 : break;
3458 :
3459 2 : case OPT_falign_jumps_:
3460 2 : check_alignment_argument (loc, arg, "jumps",
3461 : &opts->x_flag_align_jumps,
3462 : &opts->x_str_align_jumps);
3463 2 : break;
3464 :
3465 3 : case OPT_falign_labels_:
3466 3 : check_alignment_argument (loc, arg, "labels",
3467 : &opts->x_flag_align_labels,
3468 : &opts->x_str_align_labels);
3469 3 : break;
3470 :
3471 13 : case OPT_falign_functions_:
3472 13 : check_alignment_argument (loc, arg, "functions",
3473 : &opts->x_flag_align_functions,
3474 : &opts->x_str_align_functions);
3475 13 : break;
3476 :
3477 12 : case OPT_ftabstop_:
3478 : /* It is documented that we silently ignore silly values. */
3479 12 : if (value >= 1 && value <= 100)
3480 8 : dc->get_column_options ().m_tabstop = value;
3481 : break;
3482 :
3483 16 : case OPT_freport_bug:
3484 16 : dc->set_report_bug (value);
3485 16 : break;
3486 :
3487 0 : case OPT_fmultiflags:
3488 0 : gcc_checking_assert (lang_mask == CL_DRIVER);
3489 : break;
3490 :
3491 76653347 : default:
3492 : /* If the flag was handled in a standard way, assume the lack of
3493 : processing here is intentional. */
3494 76653347 : gcc_assert (option_flag_var (scode, opts));
3495 : break;
3496 : }
3497 :
3498 82792026 : common_handle_option_auto (opts, opts_set, decoded, lang_mask, kind,
3499 : loc, handlers, dc);
3500 82792026 : return true;
3501 : }
3502 :
3503 : /* Used to set the level of strict aliasing warnings in OPTS,
3504 : when no level is specified (i.e., when -Wstrict-aliasing, and not
3505 : -Wstrict-aliasing=level was given).
3506 : ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
3507 : and 0 otherwise. After calling this function, wstrict_aliasing will be
3508 : set to the default value of -Wstrict_aliasing=level, currently 3. */
3509 : static void
3510 57 : set_Wstrict_aliasing (struct gcc_options *opts, int onoff)
3511 : {
3512 57 : gcc_assert (onoff == 0 || onoff == 1);
3513 57 : if (onoff != 0)
3514 : opts->x_warn_strict_aliasing = 3;
3515 : else
3516 1 : opts->x_warn_strict_aliasing = 0;
3517 57 : }
3518 :
3519 : /* The following routines are useful in setting all the flags that
3520 : -ffast-math and -fno-fast-math imply. */
3521 : static void
3522 641298 : set_fast_math_flags (struct gcc_options *opts, int set)
3523 : {
3524 641298 : if (!opts->frontend_set_flag_unsafe_math_optimizations)
3525 : {
3526 641298 : opts->x_flag_unsafe_math_optimizations = set;
3527 641298 : set_unsafe_math_optimizations_flags (opts, set);
3528 : }
3529 641298 : if (!opts->frontend_set_flag_finite_math_only)
3530 641298 : opts->x_flag_finite_math_only = set;
3531 641298 : if (!opts->frontend_set_flag_errno_math)
3532 587567 : opts->x_flag_errno_math = !set;
3533 641298 : if (set)
3534 : {
3535 2026 : if (opts->frontend_set_flag_excess_precision == EXCESS_PRECISION_DEFAULT)
3536 2026 : opts->x_flag_excess_precision
3537 2026 : = set ? EXCESS_PRECISION_FAST : EXCESS_PRECISION_DEFAULT;
3538 2026 : if (!opts->frontend_set_flag_signaling_nans)
3539 2026 : opts->x_flag_signaling_nans = 0;
3540 2026 : if (!opts->frontend_set_flag_rounding_math)
3541 2026 : opts->x_flag_rounding_math = 0;
3542 2026 : if (!opts->frontend_set_flag_complex_method)
3543 2026 : opts->x_flag_complex_method = 0;
3544 : }
3545 641298 : }
3546 :
3547 : /* When -funsafe-math-optimizations is set the following
3548 : flags are set as well. */
3549 : static void
3550 641665 : set_unsafe_math_optimizations_flags (struct gcc_options *opts, int set)
3551 : {
3552 641665 : if (!opts->frontend_set_flag_trapping_math)
3553 641665 : opts->x_flag_trapping_math = !set;
3554 641665 : if (!opts->frontend_set_flag_signed_zeros)
3555 641665 : opts->x_flag_signed_zeros = !set;
3556 641665 : if (!opts->frontend_set_flag_associative_math)
3557 609223 : opts->x_flag_associative_math = set;
3558 641665 : if (!opts->frontend_set_flag_reciprocal_math)
3559 641665 : opts->x_flag_reciprocal_math = set;
3560 641665 : }
3561 :
3562 : /* Return true iff flags in OPTS are set as if -ffast-math. */
3563 : bool
3564 49333012 : fast_math_flags_set_p (const struct gcc_options *opts)
3565 : {
3566 49333012 : return (!opts->x_flag_trapping_math
3567 997521 : && opts->x_flag_unsafe_math_optimizations
3568 989486 : && opts->x_flag_finite_math_only
3569 989420 : && !opts->x_flag_signed_zeros
3570 989406 : && !opts->x_flag_errno_math
3571 50322414 : && opts->x_flag_excess_precision == EXCESS_PRECISION_FAST);
3572 : }
3573 :
3574 : /* Return true iff flags are set as if -ffast-math but using the flags stored
3575 : in the struct cl_optimization structure. */
3576 : bool
3577 1268 : fast_math_flags_struct_set_p (struct cl_optimization *opt)
3578 : {
3579 1268 : return (!opt->x_flag_trapping_math
3580 39 : && opt->x_flag_unsafe_math_optimizations
3581 19 : && opt->x_flag_finite_math_only
3582 19 : && !opt->x_flag_signed_zeros
3583 1287 : && !opt->x_flag_errno_math);
3584 : }
3585 :
3586 : /* Handle a debug output -g switch for options OPTS
3587 : (OPTS_SET->x_write_symbols storing whether a debug format was passed
3588 : explicitly), location LOC. EXTENDED is true or false to support
3589 : extended output (2 is special and means "-ggdb" was given). */
3590 : static void
3591 134241 : set_debug_level (uint32_t dinfo, int extended, const char *arg,
3592 : struct gcc_options *opts, struct gcc_options *opts_set,
3593 : location_t loc)
3594 : {
3595 134241 : if (dinfo == NO_DEBUG)
3596 : {
3597 128851 : if (opts->x_write_symbols == NO_DEBUG)
3598 : {
3599 112710 : opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
3600 :
3601 112710 : if (extended == 2)
3602 : {
3603 : #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO
3604 112710 : if (opts->x_write_symbols & CTF_DEBUG)
3605 : opts->x_write_symbols |= DWARF2_DEBUG;
3606 : else
3607 112710 : opts->x_write_symbols = DWARF2_DEBUG;
3608 : #endif
3609 : }
3610 :
3611 112710 : if (opts->x_write_symbols == NO_DEBUG)
3612 : warning_at (loc, 0, "target system does not support debug output");
3613 : }
3614 16141 : else if ((opts->x_write_symbols & CTF_DEBUG)
3615 16107 : || (opts->x_write_symbols & BTF_DEBUG)
3616 16107 : || (opts->x_write_symbols & CODEVIEW_DEBUG))
3617 : {
3618 34 : opts->x_write_symbols |= DWARF2_DEBUG;
3619 34 : opts_set->x_write_symbols |= DWARF2_DEBUG;
3620 : }
3621 : }
3622 : else
3623 : {
3624 : /* Make and retain the choice if both CTF and DWARF debug info are to
3625 : be generated. */
3626 5390 : if (((dinfo == DWARF2_DEBUG) || (dinfo == CTF_DEBUG))
3627 5234 : && ((opts->x_write_symbols == (DWARF2_DEBUG|CTF_DEBUG))
3628 : || (opts->x_write_symbols == DWARF2_DEBUG)
3629 : || (opts->x_write_symbols == CTF_DEBUG)))
3630 : {
3631 124 : opts->x_write_symbols |= dinfo;
3632 124 : opts_set->x_write_symbols |= dinfo;
3633 : }
3634 : /* However, CTF and BTF are not allowed together at this time. */
3635 5266 : else if (((dinfo == DWARF2_DEBUG) || (dinfo == BTF_DEBUG))
3636 4777 : && ((opts->x_write_symbols == (DWARF2_DEBUG|BTF_DEBUG))
3637 : || (opts->x_write_symbols == DWARF2_DEBUG)
3638 : || (opts->x_write_symbols == BTF_DEBUG)))
3639 : {
3640 0 : opts->x_write_symbols |= dinfo;
3641 0 : opts_set->x_write_symbols |= dinfo;
3642 : }
3643 : else
3644 : {
3645 : /* Does it conflict with an already selected debug format? */
3646 5266 : if (opts_set->x_write_symbols != NO_DEBUG
3647 0 : && opts->x_write_symbols != NO_DEBUG
3648 0 : && dinfo != opts->x_write_symbols)
3649 : {
3650 0 : gcc_assert (debug_set_count (dinfo) <= 1);
3651 0 : error_at (loc, "debug format %qs conflicts with prior selection",
3652 0 : debug_type_names[debug_set_to_format (dinfo)]);
3653 : }
3654 5266 : opts->x_write_symbols = dinfo;
3655 5266 : opts_set->x_write_symbols = dinfo;
3656 : }
3657 : }
3658 :
3659 134241 : if (dinfo != BTF_DEBUG)
3660 : {
3661 : /* A debug flag without a level defaults to level 2.
3662 : If off or at level 1, set it to level 2, but if already
3663 : at level 3, don't lower it. */
3664 134085 : if (*arg == '\0')
3665 : {
3666 128626 : if (dinfo == CTF_DEBUG)
3667 493 : opts->x_ctf_debug_info_level = CTFINFO_LEVEL_NORMAL;
3668 128133 : else if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3669 114512 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3670 : }
3671 : else
3672 : {
3673 5459 : int argval = integral_argument (arg);
3674 5459 : if (argval == -1)
3675 0 : error_at (loc, "unrecognized debug output level %qs", arg);
3676 5459 : else if (argval > 3)
3677 0 : error_at (loc, "debug output level %qs is too high", arg);
3678 : else
3679 : {
3680 5459 : if (dinfo == CTF_DEBUG)
3681 2 : opts->x_ctf_debug_info_level
3682 2 : = (enum ctf_debug_info_levels) argval;
3683 : else
3684 5457 : opts->x_debug_info_level = (enum debug_info_levels) argval;
3685 : }
3686 : }
3687 : }
3688 156 : else if (*arg != '\0')
3689 0 : error_at (loc, "unrecognized btf debug output level %qs", arg);
3690 134241 : }
3691 :
3692 : /* Arrange to dump core on error for diagnostic context DC. (The
3693 : regular error message is still printed first, except in the case of
3694 : abort ().) */
3695 :
3696 : static void
3697 13 : setup_core_dumping (diagnostics::context *dc)
3698 : {
3699 : #ifdef SIGABRT
3700 13 : signal (SIGABRT, SIG_DFL);
3701 : #endif
3702 : #if defined(HAVE_SETRLIMIT)
3703 13 : {
3704 13 : struct rlimit rlim;
3705 13 : if (getrlimit (RLIMIT_CORE, &rlim) != 0)
3706 0 : fatal_error (input_location, "getting core file size maximum limit: %m");
3707 13 : rlim.rlim_cur = rlim.rlim_max;
3708 13 : if (setrlimit (RLIMIT_CORE, &rlim) != 0)
3709 0 : fatal_error (input_location,
3710 : "setting core file size limit to maximum: %m");
3711 : }
3712 : #endif
3713 13 : dc->set_abort_on_error (true);
3714 13 : }
3715 :
3716 : /* Parse a -d<ARG> command line switch for OPTS, location LOC,
3717 : diagnostic context DC. */
3718 :
3719 : static void
3720 1704 : decode_d_option (const char *arg, struct gcc_options *opts,
3721 : location_t loc, diagnostics::context *dc)
3722 : {
3723 1704 : int c;
3724 :
3725 3408 : while (*arg)
3726 1704 : switch (c = *arg++)
3727 : {
3728 704 : case 'A':
3729 704 : opts->x_flag_debug_asm = 1;
3730 704 : break;
3731 123 : case 'p':
3732 123 : opts->x_flag_print_asm_name = 1;
3733 123 : break;
3734 5 : case 'P':
3735 5 : opts->x_flag_dump_rtl_in_asm = 1;
3736 5 : opts->x_flag_print_asm_name = 1;
3737 5 : break;
3738 10 : case 'x':
3739 10 : opts->x_rtl_dump_and_exit = 1;
3740 10 : break;
3741 : case 'D': /* These are handled by the preprocessor. */
3742 : case 'I':
3743 : case 'M':
3744 : case 'N':
3745 : case 'U':
3746 : break;
3747 13 : case 'H':
3748 13 : setup_core_dumping (dc);
3749 13 : break;
3750 4 : case 'a':
3751 4 : opts->x_flag_dump_all_passed = true;
3752 4 : break;
3753 :
3754 0 : default:
3755 0 : warning_at (loc, 0, "unrecognized gcc debugging option: %c", c);
3756 0 : break;
3757 : }
3758 1704 : }
3759 :
3760 : /* Enable (or disable if VALUE is 0) a warning option ARG (language
3761 : mask LANG_MASK, option handlers HANDLERS) as an error for option
3762 : structures OPTS and OPTS_SET, diagnostic context DC (possibly
3763 : NULL), location LOC. This is used by -Werror=. */
3764 :
3765 : static void
3766 7069 : enable_warning_as_error (const char *arg, int value, unsigned int lang_mask,
3767 : const struct cl_option_handlers *handlers,
3768 : struct gcc_options *opts,
3769 : struct gcc_options *opts_set,
3770 : location_t loc, diagnostics::context *dc)
3771 : {
3772 7069 : char *new_option;
3773 7069 : int option_index;
3774 :
3775 7069 : new_option = XNEWVEC (char, strlen (arg) + 2);
3776 7069 : new_option[0] = 'W';
3777 7069 : strcpy (new_option + 1, arg);
3778 7069 : option_index = find_opt (new_option, lang_mask);
3779 7069 : if (option_index == OPT_SPECIAL_unknown)
3780 : {
3781 2 : option_proposer op;
3782 2 : const char *hint = op.suggest_option (new_option);
3783 2 : if (hint)
3784 3 : error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>;"
3785 : " did you mean %<-%s%>?", value ? "" : "no-",
3786 : arg, new_option, hint);
3787 : else
3788 0 : error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>",
3789 : value ? "" : "no-", arg, new_option);
3790 2 : }
3791 7067 : else if (!(cl_options[option_index].flags & CL_WARNING))
3792 4 : error_at (loc, "%<-Werror=%s%>: %<-%s%> is not an option that "
3793 : "controls warnings", arg, new_option);
3794 : else
3795 : {
3796 1114 : const enum diagnostics::kind kind = (value
3797 7063 : ? diagnostics::kind::error
3798 : : diagnostics::kind::warning);
3799 7063 : const char *arg = NULL;
3800 :
3801 7063 : if (cl_options[option_index].flags & CL_JOINED)
3802 17 : arg = new_option + cl_options[option_index].opt_len;
3803 7063 : control_warning_option (option_index, (int) kind, arg, value,
3804 : loc, lang_mask,
3805 : handlers, opts, opts_set, dc);
3806 : }
3807 7069 : free (new_option);
3808 7069 : }
3809 :
3810 : /* Return the name of the option OPTION_INDEX which enabled a diagnostic,
3811 : originally of type ORIG_DIAG_KIND but possibly converted to DIAG_KIND by
3812 : options such as -Werror. Can return null if OPTION_ID is zero. */
3813 :
3814 : label_text
3815 1623123 : compiler_diagnostic_option_id_manager::
3816 : get_option_name (diagnostics::option_id option_id,
3817 : enum diagnostics::kind orig_diag_kind,
3818 : enum diagnostics::kind diag_kind) const
3819 : {
3820 1623123 : if (option_id.m_idx)
3821 : {
3822 : /* A warning classified as an error. */
3823 95714 : if ((orig_diag_kind == diagnostics::kind::warning
3824 95714 : || orig_diag_kind == diagnostics::kind::pedwarn)
3825 80425 : && diag_kind == diagnostics::kind::error)
3826 224 : return label_text::take
3827 224 : (concat (cl_options[OPT_Werror_].opt_text,
3828 : /* Skip over "-W". */
3829 224 : cl_options[option_id.m_idx].opt_text + 2,
3830 224 : NULL));
3831 : /* A warning with option. */
3832 : else
3833 95490 : return label_text::take
3834 95490 : (xstrdup (cl_options[option_id.m_idx].opt_text));
3835 : }
3836 : /* A warning without option classified as an error. */
3837 1527409 : else if ((orig_diag_kind == diagnostics::kind::warning
3838 1527409 : || orig_diag_kind == diagnostics::kind::pedwarn
3839 1496045 : || diag_kind == diagnostics::kind::warning)
3840 1527409 : && m_context.warning_as_error_requested_p ())
3841 102 : return label_text::borrow (cl_options[OPT_Werror].opt_text);
3842 : else
3843 1527307 : return label_text ();
3844 : }
3845 :
3846 : /* Get the page within the documentation for this option. */
3847 :
3848 : static const char *
3849 12501 : get_option_html_page (int option_index)
3850 : {
3851 12501 : const cl_option *cl_opt = &cl_options[option_index];
3852 :
3853 : #ifdef CL_Fortran
3854 12501 : if ((cl_opt->flags & CL_Fortran) != 0
3855 : /* If it is option common to both C/C++ and Fortran, it is documented
3856 : in gcc/ rather than gfortran/ docs. */
3857 90 : && (cl_opt->flags & CL_C) == 0
3858 : #ifdef CL_CXX
3859 80 : && (cl_opt->flags & CL_CXX) == 0
3860 : #endif
3861 : )
3862 80 : return "gfortran/Error-and-Warning-Options.html";
3863 : #endif
3864 :
3865 : return nullptr;
3866 : }
3867 :
3868 : /* Get the url within the documentation for this option, or NULL. */
3869 :
3870 : label_text
3871 26710 : get_option_url_suffix (int option_index, unsigned lang_mask)
3872 : {
3873 26710 : if (const char *url = get_opt_url_suffix (option_index, lang_mask))
3874 :
3875 14209 : return label_text::borrow (url);
3876 :
3877 : /* Fallback code for some options that aren't handled byt opt_url_suffixes
3878 : e.g. links below "gfortran/". */
3879 12501 : if (const char *html_page = get_option_html_page (option_index))
3880 80 : return label_text::take
3881 : (concat (html_page,
3882 : /* Expect an anchor of the form "index-Wfoo" e.g.
3883 : <a name="index-Wformat"></a>, and thus an id within
3884 : the page of "#index-Wformat". */
3885 : "#index",
3886 80 : cl_options[option_index].opt_text,
3887 80 : NULL));
3888 :
3889 12421 : return label_text ();
3890 : }
3891 :
3892 : /* Return a URL describing the option OPTION_INDEX which enabled
3893 : a diagnostic, or null. */
3894 :
3895 : label_text
3896 123 : gcc_diagnostic_option_id_manager::
3897 : get_option_url (diagnostics::option_id option_id) const
3898 : {
3899 123 : if (option_id.m_idx)
3900 : {
3901 123 : label_text url_suffix = get_option_url_suffix (option_id.m_idx,
3902 123 : m_lang_mask);
3903 123 : if (url_suffix.get ())
3904 123 : return label_text::take
3905 123 : (concat (DOCUMENTATION_ROOT_URL, url_suffix.get (), nullptr));
3906 123 : }
3907 :
3908 0 : return label_text ();
3909 : }
3910 :
3911 : /* Return a heap allocated producer with command line options. */
3912 :
3913 : char *
3914 53702 : gen_command_line_string (cl_decoded_option *options,
3915 : unsigned int options_count)
3916 : {
3917 53702 : auto_vec<const char *> switches;
3918 53702 : char *options_string, *tail;
3919 53702 : const char *p;
3920 53702 : size_t len = 0;
3921 :
3922 1874213 : for (unsigned i = 0; i < options_count; i++)
3923 1820511 : switch (options[i].opt_index)
3924 : {
3925 816101 : case OPT_o:
3926 816101 : case OPT_d:
3927 816101 : case OPT_dumpbase:
3928 816101 : case OPT_dumpbase_ext:
3929 816101 : case OPT_dumpdir:
3930 816101 : case OPT_quiet:
3931 816101 : case OPT_version:
3932 816101 : case OPT_v:
3933 816101 : case OPT_w:
3934 816101 : case OPT_L:
3935 816101 : case OPT_I:
3936 816101 : case OPT_SPECIAL_unknown:
3937 816101 : case OPT_SPECIAL_ignore:
3938 816101 : case OPT_SPECIAL_warn_removed:
3939 816101 : case OPT_SPECIAL_program_name:
3940 816101 : case OPT_SPECIAL_input_file:
3941 816101 : case OPT_grecord_gcc_switches:
3942 816101 : case OPT_frecord_gcc_switches:
3943 816101 : case OPT__output_pch:
3944 816101 : case OPT_fdiagnostics_show_highlight_colors:
3945 816101 : case OPT_fdiagnostics_show_location_:
3946 816101 : case OPT_fdiagnostics_show_option:
3947 816101 : case OPT_fdiagnostics_show_caret:
3948 816101 : case OPT_fdiagnostics_show_event_links:
3949 816101 : case OPT_fdiagnostics_show_labels:
3950 816101 : case OPT_fdiagnostics_show_line_numbers:
3951 816101 : case OPT_fdiagnostics_color_:
3952 816101 : case OPT_fdiagnostics_format_:
3953 816101 : case OPT_fdiagnostics_show_nesting:
3954 816101 : case OPT_fdiagnostics_show_nesting_locations:
3955 816101 : case OPT_fdiagnostics_show_nesting_levels:
3956 816101 : case OPT_fverbose_asm:
3957 816101 : case OPT____:
3958 816101 : case OPT__sysroot_:
3959 816101 : case OPT_nostdinc:
3960 816101 : case OPT_nostdinc__:
3961 816101 : case OPT_fpreprocessed:
3962 816101 : case OPT_fltrans_output_list_:
3963 816101 : case OPT_fltrans_linemap_file_:
3964 816101 : case OPT_fresolution_:
3965 816101 : case OPT_fdebug_prefix_map_:
3966 816101 : case OPT_fmacro_prefix_map_:
3967 816101 : case OPT_ffile_prefix_map_:
3968 816101 : case OPT_fprofile_prefix_map_:
3969 816101 : case OPT_fcanon_prefix_map:
3970 816101 : case OPT_fcompare_debug:
3971 816101 : case OPT_fchecking:
3972 816101 : case OPT_fchecking_:
3973 : /* Ignore these. */
3974 816101 : continue;
3975 68864 : case OPT_D:
3976 68864 : case OPT_U:
3977 68864 : if (startswith (options[i].arg, "_FORTIFY_SOURCE")
3978 68864 : && (options[i].arg[sizeof ("_FORTIFY_SOURCE") - 1] == '\0'
3979 0 : || (options[i].opt_index == OPT_D
3980 0 : && options[i].arg[sizeof ("_FORTIFY_SOURCE") - 1] == '=')))
3981 : {
3982 0 : switches.safe_push (options[i].orig_option_with_args_text);
3983 0 : len += strlen (options[i].orig_option_with_args_text) + 1;
3984 : }
3985 : /* Otherwise ignore these. */
3986 68864 : continue;
3987 0 : case OPT_flto_:
3988 0 : {
3989 0 : const char *lto_canonical = "-flto";
3990 0 : switches.safe_push (lto_canonical);
3991 0 : len += strlen (lto_canonical) + 1;
3992 0 : break;
3993 : }
3994 935546 : default:
3995 936327 : if (cl_options[options[i].opt_index].flags
3996 935546 : & CL_NO_DWARF_RECORD)
3997 781 : continue;
3998 934765 : gcc_checking_assert (options[i].canonical_option[0][0] == '-');
3999 934765 : switch (options[i].canonical_option[0][1])
4000 : {
4001 277336 : case 'M':
4002 277336 : case 'i':
4003 277336 : case 'W':
4004 277336 : continue;
4005 375360 : case 'f':
4006 375360 : if (strncmp (options[i].canonical_option[0] + 2,
4007 : "dump", 4) == 0)
4008 1809 : continue;
4009 : break;
4010 : default:
4011 : break;
4012 : }
4013 655620 : switches.safe_push (options[i].orig_option_with_args_text);
4014 655620 : len += strlen (options[i].orig_option_with_args_text) + 1;
4015 655620 : break;
4016 884965 : }
4017 :
4018 53702 : options_string = XNEWVEC (char, len + 1);
4019 53702 : tail = options_string;
4020 :
4021 53702 : unsigned i;
4022 763024 : FOR_EACH_VEC_ELT (switches, i, p)
4023 : {
4024 655620 : len = strlen (p);
4025 655620 : memcpy (tail, p, len);
4026 655620 : tail += len;
4027 655620 : if (i != switches.length () - 1)
4028 : {
4029 601918 : *tail = ' ';
4030 601918 : ++tail;
4031 : }
4032 : }
4033 :
4034 53702 : *tail = '\0';
4035 53702 : return options_string;
4036 53702 : }
4037 :
4038 : /* Return a heap allocated producer string including command line options. */
4039 :
4040 : char *
4041 53691 : gen_producer_string (const char *language_string, cl_decoded_option *options,
4042 : unsigned int options_count)
4043 : {
4044 53691 : char *cmdline = gen_command_line_string (options, options_count);
4045 53691 : char *combined = concat (language_string, " ", version_string, " ",
4046 : cmdline, NULL);
4047 53691 : free (cmdline);
4048 53691 : return combined;
4049 : }
4050 :
4051 : #if CHECKING_P
4052 :
4053 : namespace selftest {
4054 :
4055 : /* Verify that get_option_url_suffix works as expected. */
4056 :
4057 : static void
4058 4 : test_get_option_url_suffix ()
4059 : {
4060 4 : ASSERT_STREQ (get_option_url_suffix (OPT_Wcpp, 0).get (),
4061 : "gcc/Warning-Options.html#index-Wcpp");
4062 4 : ASSERT_STREQ (get_option_url_suffix (OPT_Wanalyzer_double_free, 0).get (),
4063 : "gcc/Static-Analyzer-Options.html#index-Wanalyzer-double-free");
4064 :
4065 : /* Test of a D-specific option. */
4066 : #ifdef CL_D
4067 4 : ASSERT_EQ (get_option_url_suffix (OPT_fbounds_check_, 0).get (), nullptr);
4068 4 : ASSERT_STREQ (get_option_url_suffix (OPT_fbounds_check_, CL_D).get (),
4069 : "gdc/Runtime-Options.html#index-fbounds-check");
4070 :
4071 : /* Test of a D-specific override to an option URL. */
4072 : /* Generic URL. */
4073 4 : ASSERT_STREQ (get_option_url_suffix (OPT_fmax_errors_, 0).get (),
4074 : "gcc/Warning-Options.html#index-fmax-errors");
4075 : /* D-specific URL. */
4076 4 : ASSERT_STREQ (get_option_url_suffix (OPT_fmax_errors_, CL_D).get (),
4077 : "gdc/Warnings.html#index-fmax-errors");
4078 : #endif
4079 :
4080 : #ifdef CL_Fortran
4081 4 : ASSERT_STREQ
4082 : (get_option_url_suffix (OPT_Wline_truncation, CL_Fortran).get (),
4083 : "gfortran/Error-and-Warning-Options.html#index-Wline-truncation");
4084 : #endif
4085 4 : }
4086 :
4087 : /* Verify EnumSet and EnumBitSet requirements. */
4088 :
4089 : static void
4090 4 : test_enum_sets ()
4091 : {
4092 10352 : for (unsigned i = 0; i < cl_options_count; ++i)
4093 10348 : if (cl_options[i].var_type == CLVC_ENUM
4094 368 : && cl_options[i].var_value != CLEV_NORMAL)
4095 : {
4096 32 : const struct cl_enum *e = &cl_enums[cl_options[i].var_enum];
4097 32 : unsigned HOST_WIDE_INT used_sets = 0;
4098 32 : unsigned HOST_WIDE_INT mask = 0;
4099 32 : unsigned highest_set = 0;
4100 180 : for (unsigned j = 0; e->values[j].arg; ++j)
4101 : {
4102 148 : unsigned set = e->values[j].flags >> CL_ENUM_SET_SHIFT;
4103 148 : if (cl_options[i].var_value == CLEV_BITSET)
4104 : {
4105 : /* For EnumBitSet Set shouldn't be used and Value should
4106 : be a power of two. */
4107 28 : ASSERT_TRUE (set == 0);
4108 56 : ASSERT_TRUE (pow2p_hwi (e->values[j].value));
4109 28 : continue;
4110 28 : }
4111 : /* Test that enumerators referenced in EnumSet have all
4112 : Set(n) on them within the valid range. */
4113 120 : ASSERT_TRUE (set >= 1 && set <= HOST_BITS_PER_WIDE_INT);
4114 120 : highest_set = MAX (set, highest_set);
4115 120 : used_sets |= HOST_WIDE_INT_1U << (set - 1);
4116 : }
4117 32 : if (cl_options[i].var_value == CLEV_BITSET)
4118 8 : continue;
4119 : /* If there is just one set, no point to using EnumSet. */
4120 24 : ASSERT_TRUE (highest_set >= 2);
4121 : /* Test that there are no gaps in between the sets. */
4122 24 : if (highest_set == HOST_BITS_PER_WIDE_INT)
4123 0 : ASSERT_TRUE (used_sets == HOST_WIDE_INT_M1U);
4124 : else
4125 24 : ASSERT_TRUE (used_sets == (HOST_WIDE_INT_1U << highest_set) - 1);
4126 112 : for (unsigned int j = 1; j <= highest_set; ++j)
4127 : {
4128 : unsigned HOST_WIDE_INT this_mask = 0;
4129 616 : for (unsigned k = 0; e->values[k].arg; ++k)
4130 : {
4131 528 : unsigned set = e->values[j].flags >> CL_ENUM_SET_SHIFT;
4132 528 : if (set == j)
4133 128 : this_mask |= e->values[j].value;
4134 : }
4135 88 : ASSERT_TRUE ((mask & this_mask) == 0);
4136 88 : mask |= this_mask;
4137 : }
4138 : }
4139 4 : }
4140 :
4141 : /* Run all of the selftests within this file. */
4142 :
4143 : void
4144 4 : opts_cc_tests ()
4145 : {
4146 4 : test_get_option_url_suffix ();
4147 4 : test_enum_sets ();
4148 4 : }
4149 :
4150 : } // namespace selftest
4151 :
4152 : #endif /* #if CHECKING_P */
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