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 108616 : btf_debuginfo_p ()
148 : {
149 108616 : return (write_symbols & BTF_DEBUG);
150 : }
151 :
152 : /* Return TRUE iff BTF with CO-RE debug info is enabled. */
153 :
154 : bool
155 174 : btf_with_core_debuginfo_p ()
156 : {
157 174 : return (write_symbols & BTF_WITH_CORE_DEBUG);
158 : }
159 :
160 : /* Return TRUE iff CTF debug info is enabled. */
161 :
162 : bool
163 301 : ctf_debuginfo_p ()
164 : {
165 301 : return (write_symbols & CTF_DEBUG);
166 : }
167 :
168 : /* Return TRUE iff CodeView debug info is enabled. */
169 :
170 : bool
171 307 : codeview_debuginfo_p ()
172 : {
173 307 : return (write_symbols & CODEVIEW_DEBUG);
174 : }
175 :
176 : /* Return TRUE iff dwarf2 debug info is enabled. */
177 :
178 : bool
179 47339511 : dwarf_debuginfo_p (struct gcc_options *opts)
180 : {
181 47339511 : 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 5021328 : bool dwarf_based_debuginfo_p ()
188 : {
189 5021328 : return ((write_symbols & CTF_DEBUG)
190 5020183 : || (write_symbols & BTF_DEBUG)
191 10041283 : || (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 294649 : base_of_path (const char *path, const char **base_out)
318 : {
319 294649 : const char *base = path;
320 294649 : const char *dot = 0;
321 294649 : const char *p = path;
322 294649 : char c = *p;
323 22935527 : while (c)
324 : {
325 22640878 : if (IS_DIR_SEPARATOR (c))
326 : {
327 2576349 : base = p + 1;
328 2576349 : dot = 0;
329 : }
330 20064529 : else if (c == '.')
331 516902 : dot = p;
332 22640878 : c = *++p;
333 : }
334 294649 : if (!dot)
335 421 : dot = p;
336 294649 : *base_out = base;
337 294649 : 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 1297289 : 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 1297289 : gcc_assert (dc == global_dc);
376 1297289 : gcc_assert (static_cast<diagnostics::kind> (kind)
377 : == diagnostics::kind::unspecified);
378 1297289 : 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 612100 : init_opts_obstack (void)
430 : {
431 612100 : gcc_obstack_init (&opts_obstack);
432 612100 : }
433 :
434 : /* Initialize OPTS and OPTS_SET before using them in parsing options. */
435 :
436 : void
437 50478235 : 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 50478235 : gcc_assert (opts_obstack.chunk_size > 0);
442 :
443 50478235 : *opts = global_options_init;
444 :
445 50478235 : if (opts_set)
446 599566 : memset (opts_set, 0, sizeof (*opts_set));
447 :
448 : /* Initialize whether `char' is signed. */
449 50478235 : 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 50478235 : opts->x_target_flags = targetm_common.default_target_flags;
454 :
455 : /* Some targets have ABI-specified unwind tables. */
456 50478235 : opts->x_flag_unwind_tables = targetm_common.unwind_tables_default;
457 :
458 : /* Languages not explicitly specifying a default get fortran rules. */
459 50478235 : opts->x_flag_complex_method = 1;
460 :
461 : /* Some targets have other target-specific initialization. */
462 50478235 : targetm_common.option_init_struct (opts);
463 50478235 : }
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 77044320 : 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 77044320 : const struct cl_option *option = &cl_options[default_opt->opt_index];
481 77044320 : bool enabled;
482 :
483 77044320 : if (size)
484 1899480 : gcc_assert (level == 2);
485 77044320 : if (fast)
486 76920 : gcc_assert (level == 3);
487 77044320 : if (debug)
488 83640 : gcc_assert (level == 1);
489 :
490 77044320 : 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 19261080 : case OPT_LEVELS_1_PLUS:
501 19261080 : enabled = (level >= 1);
502 19261080 : break;
503 :
504 0 : case OPT_LEVELS_1_PLUS_SPEED_ONLY:
505 0 : enabled = (level >= 1 && !size && !debug);
506 : break;
507 :
508 8346468 : case OPT_LEVELS_1_PLUS_NOT_DEBUG:
509 8346468 : enabled = (level >= 1 && !debug);
510 8346468 : break;
511 :
512 26965512 : case OPT_LEVELS_2_PLUS:
513 26965512 : enabled = (level >= 2);
514 26965512 : break;
515 :
516 7704432 : case OPT_LEVELS_2_PLUS_SPEED_ONLY:
517 7704432 : enabled = (level >= 2 && !size && !debug);
518 : break;
519 :
520 10914612 : case OPT_LEVELS_3_PLUS:
521 10914612 : enabled = (level >= 3);
522 10914612 : 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 1926108 : case OPT_LEVELS_FAST:
533 1926108 : enabled = fast;
534 1926108 : break;
535 :
536 0 : case OPT_LEVELS_NONE:
537 0 : default:
538 0 : gcc_unreachable ();
539 : }
540 :
541 67413780 : if (enabled)
542 51861071 : handle_generated_option (opts, opts_set, default_opt->opt_index,
543 51861071 : default_opt->arg, default_opt->value,
544 : lang_mask,
545 : static_cast<int> (diagnostics::kind::unspecified),
546 : loc,
547 : handlers, true, dc);
548 25183249 : else if (default_opt->arg == NULL
549 25183249 : && !option->cl_reject_negative
550 23965569 : && !(option->flags & CL_PARAMS))
551 20905099 : handle_generated_option (opts, opts_set, default_opt->opt_index,
552 20905099 : default_opt->arg, !default_opt->value,
553 : lang_mask,
554 : static_cast<int> (diagnostics::kind::unspecified),
555 : loc,
556 : handlers, true, dc);
557 77044320 : }
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 1284072 : 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 1284072 : size_t i;
575 :
576 78328392 : for (i = 0; default_opts[i].levels != OPT_LEVELS_NONE; i++)
577 77044320 : maybe_default_option (opts, opts_set, &default_opts[i],
578 : level, size, fast, debug,
579 : lang_mask, handlers, loc, dc);
580 1284072 : }
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 642036 : 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 642036 : unsigned int i;
744 642036 : int opt2;
745 642036 : 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 10970051 : for (i = 1; i < decoded_options_count; i++)
750 : {
751 10328015 : struct cl_decoded_option *opt = &decoded_options[i];
752 10328015 : switch (opt->opt_index)
753 : {
754 576740 : case OPT_O:
755 576740 : if (*opt->arg == '\0')
756 : {
757 14622 : opts->x_optimize = 1;
758 14622 : opts->x_optimize_size = 0;
759 14622 : opts->x_optimize_fast = 0;
760 14622 : opts->x_optimize_debug = 0;
761 : }
762 : else
763 : {
764 562118 : const int optimize_val = integral_argument (opt->arg);
765 562118 : 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 562118 : opts->x_optimize = optimize_val;
771 562118 : if ((unsigned int) opts->x_optimize > 255)
772 3 : opts->x_optimize = 255;
773 562118 : opts->x_optimize_size = 0;
774 562118 : opts->x_optimize_fast = 0;
775 562118 : opts->x_optimize_debug = 0;
776 : }
777 : }
778 : break;
779 :
780 15983 : case OPT_Os:
781 15983 : opts->x_optimize_size = 1;
782 :
783 : /* Optimizing for size forces optimize to be 2. */
784 15983 : opts->x_optimize = 2;
785 15983 : opts->x_optimize_fast = 0;
786 15983 : opts->x_optimize_debug = 0;
787 15983 : 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 :
798 728 : case OPT_Ofast:
799 : /* -Ofast only adds flags to -O3. */
800 728 : opts->x_optimize_size = 0;
801 728 : opts->x_optimize = 3;
802 728 : opts->x_optimize_fast = 1;
803 728 : opts->x_optimize_debug = 0;
804 728 : break;
805 :
806 721 : case OPT_Og:
807 : /* -Og selects optimization level 1. */
808 721 : opts->x_optimize_size = 0;
809 721 : opts->x_optimize = 1;
810 721 : opts->x_optimize_fast = 0;
811 721 : opts->x_optimize_debug = 1;
812 721 : break;
813 :
814 23808 : case OPT_fopenacc:
815 23808 : if (opt->value)
816 10328015 : openacc_mode = true;
817 : break;
818 :
819 : default:
820 : /* Ignore other options in this prescan. */
821 : break;
822 : }
823 : }
824 :
825 642036 : maybe_default_options (opts, opts_set, default_options_table,
826 642036 : opts->x_optimize, opts->x_optimize_size,
827 642036 : opts->x_optimize_fast, opts->x_optimize_debug,
828 : lang_mask, handlers, loc, dc);
829 :
830 : /* -O2 param settings. */
831 642036 : opt2 = (opts->x_optimize >= 2);
832 :
833 642036 : if (openacc_mode)
834 3343 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_pta, true);
835 :
836 : /* Track fields in field-sensitive alias analysis. */
837 642036 : if (opt2)
838 498554 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_fields_for_field_sensitive,
839 : 100);
840 :
841 642036 : if (opts->x_optimize_size)
842 : /* We want to crossjump as much as possible. */
843 15829 : 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 642036 : if (opts->x_optimize_debug)
848 697 : 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 642036 : maybe_default_options (opts, opts_set,
852 : targetm_common.option_optimization_table,
853 : opts->x_optimize, opts->x_optimize_size,
854 642036 : opts->x_optimize_fast, opts->x_optimize_debug,
855 : lang_mask, handlers, loc, dc);
856 642036 : }
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 5136288 : report_conflicting_sanitizer_options (struct gcc_options *opts, location_t loc,
1037 : sanitize_code_type left,
1038 : sanitize_code_type right)
1039 : {
1040 5136288 : sanitize_code_type left_seen = (opts->x_flag_sanitize & left);
1041 5136288 : sanitize_code_type right_seen = (opts->x_flag_sanitize & right);
1042 5136288 : 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 5136288 : }
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 642036 : validate_ipa_reorder_locality_lto_partition (struct gcc_options *opts,
1059 : struct gcc_options *opts_set)
1060 : {
1061 642036 : static bool validated_p = false;
1062 :
1063 642036 : if (opts_set->x_flag_lto_partition)
1064 : {
1065 15702 : 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 642036 : validated_p = true;
1070 642036 : }
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 291819 : maybe_prepend_dump_dir_name (const gcc_options &opts)
1079 : {
1080 291819 : const char *sep = opts.x_dump_base_name;
1081 :
1082 3974184 : for (; *sep; sep++)
1083 3702819 : if (IS_DIR_SEPARATOR (*sep))
1084 : break;
1085 :
1086 291819 : if (*sep)
1087 : {
1088 : /* If dump_base_name contains subdirectories, don't prepend
1089 : anything. */
1090 : return nullptr;
1091 : }
1092 :
1093 271365 : if (opts.x_dump_dir_name)
1094 : {
1095 : /* We have a DUMP_DIR_NAME, prepend that. */
1096 109027 : return opts_concat (opts.x_dump_dir_name,
1097 109027 : 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 642036 : finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
1108 : location_t loc)
1109 : {
1110 642036 : if (opts->x_dump_base_name
1111 639201 : && ! opts->x_dump_base_name_prefixed)
1112 : {
1113 583402 : if (const char *prepended_dump_base_name
1114 291701 : = maybe_prepend_dump_dir_name (*opts))
1115 109027 : opts->x_dump_base_name = prepended_dump_base_name;
1116 :
1117 : /* It is definitely prefixed now. */
1118 291701 : 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 642036 : 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 642036 : if (opts->x_flag_self_test)
1141 5 : opts->x_flag_syntax_only = 1;
1142 :
1143 642036 : 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 642036 : if (!opts->x_optimize
1150 114103 : && opts->x_flag_toplevel_reorder == 2
1151 113869 : && !(opts->x_flag_section_anchors && opts_set->x_flag_section_anchors))
1152 : {
1153 113869 : opts->x_flag_toplevel_reorder = 0;
1154 113869 : opts->x_flag_section_anchors = 0;
1155 : }
1156 642036 : if (!opts->x_flag_toplevel_reorder)
1157 : {
1158 133678 : 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 133678 : opts->x_flag_section_anchors = 0;
1162 : }
1163 :
1164 642036 : if (opts->x_flag_hardened)
1165 : {
1166 92 : if (!opts_set->x_flag_auto_var_init)
1167 88 : opts->x_flag_auto_var_init
1168 88 : = auto_init_type (opts->x_flag_auto_var_init | AUTO_INIT_ZERO);
1169 4 : else if ((opts->x_flag_auto_var_init & ~AUTO_INIT_CXX26)
1170 : != AUTO_INIT_ZERO)
1171 4 : warning_at (loc, OPT_Whardened,
1172 : "%<-ftrivial-auto-var-init=zero%> is not enabled by "
1173 : "%<-fhardened%> because it was specified on the command "
1174 : "line");
1175 : }
1176 :
1177 642036 : if (!opts->x_flag_opts_finished)
1178 : {
1179 : /* We initialize opts->x_flag_pie to -1 so that targets can set a
1180 : default value. */
1181 294536 : if (opts->x_flag_pie == -1)
1182 : {
1183 : /* We initialize opts->x_flag_pic to -1 so that we can tell if
1184 : -fpic, -fPIC, -fno-pic or -fno-PIC is used. */
1185 256406 : if (opts->x_flag_pic == -1)
1186 247012 : opts->x_flag_pie = (opts->x_flag_hardened
1187 247012 : ? /*-fPIE*/ 2 : DEFAULT_FLAG_PIE);
1188 : else
1189 9394 : opts->x_flag_pie = 0;
1190 : }
1191 : /* If -fPIE or -fpie is used, turn on PIC. */
1192 294536 : if (opts->x_flag_pie)
1193 17919 : opts->x_flag_pic = opts->x_flag_pie;
1194 276617 : else if (opts->x_flag_pic == -1)
1195 267223 : opts->x_flag_pic = 0;
1196 294536 : if (opts->x_flag_pic && !opts->x_flag_pie)
1197 9189 : opts->x_flag_shlib = 1;
1198 294536 : opts->x_flag_opts_finished = true;
1199 : }
1200 :
1201 : /* We initialize opts->x_flag_stack_protect to -1 so that targets
1202 : can set a default value. With --enable-default-ssp or -fhardened
1203 : the default is -fstack-protector-strong. */
1204 642036 : if (opts->x_flag_stack_protect == -1)
1205 : {
1206 : /* This should check FRAME_GROWS_DOWNWARD, but on some targets it's
1207 : defined in such a way that it uses flag_stack_protect which can't
1208 : be used here. Moreover, some targets like BPF don't support
1209 : -fstack-protector at all but we don't know that here. So remember
1210 : that flag_stack_protect was set at the behest of -fhardened. */
1211 293218 : if (opts->x_flag_hardened)
1212 : {
1213 88 : opts->x_flag_stack_protect = SPCT_FLAG_STRONG;
1214 88 : flag_stack_protector_set_by_fhardened_p = true;
1215 : }
1216 : else
1217 293130 : opts->x_flag_stack_protect = DEFAULT_FLAG_SSP;
1218 : }
1219 348818 : else if (opts->x_flag_hardened
1220 4 : && opts->x_flag_stack_protect != SPCT_FLAG_STRONG)
1221 4 : warning_at (UNKNOWN_LOCATION, OPT_Whardened,
1222 : "%<-fstack-protector-strong%> is not enabled by "
1223 : "%<-fhardened%> because it was specified on the command "
1224 : "line");
1225 :
1226 642036 : if (opts->x_optimize == 0)
1227 : {
1228 : /* Inlining does not work if not optimizing,
1229 : so force it not to be done. */
1230 114103 : opts->x_warn_inline = 0;
1231 114103 : opts->x_flag_no_inline = 1;
1232 : }
1233 :
1234 : /* At -O0 or -Og, turn __builtin_unreachable into a trap. */
1235 642036 : if (!opts->x_optimize || opts->x_optimize_debug)
1236 114800 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unreachable_traps, true);
1237 :
1238 : /* Pipelining of outer loops is only possible when general pipelining
1239 : capabilities are requested. */
1240 642036 : if (!opts->x_flag_sel_sched_pipelining)
1241 641984 : opts->x_flag_sel_sched_pipelining_outer_loops = 0;
1242 :
1243 642036 : if (opts->x_flag_conserve_stack)
1244 : {
1245 30 : SET_OPTION_IF_UNSET (opts, opts_set, param_large_stack_frame, 100);
1246 30 : SET_OPTION_IF_UNSET (opts, opts_set, param_stack_frame_growth, 40);
1247 : }
1248 :
1249 642036 : if (opts->x_flag_lto)
1250 : {
1251 : #ifdef ENABLE_LTO
1252 185159 : opts->x_flag_generate_lto = 1;
1253 :
1254 : /* When generating IL, do not operate in whole-program mode.
1255 : Otherwise, symbols will be privatized too early, causing link
1256 : errors later. */
1257 185159 : opts->x_flag_whole_program = 0;
1258 : #else
1259 : error_at (loc, "LTO support has not been enabled in this configuration");
1260 : #endif
1261 185159 : if (!opts->x_flag_fat_lto_objects
1262 21168 : && (!HAVE_LTO_PLUGIN
1263 21168 : || (opts_set->x_flag_use_linker_plugin
1264 19683 : && !opts->x_flag_use_linker_plugin)))
1265 : {
1266 8991 : if (opts_set->x_flag_fat_lto_objects)
1267 0 : error_at (loc, "%<-fno-fat-lto-objects%> are supported only with "
1268 : "linker plugin");
1269 8991 : opts->x_flag_fat_lto_objects = 1;
1270 : }
1271 :
1272 : /* -gsplit-dwarf isn't compatible with LTO, see PR88389. */
1273 185159 : if (opts->x_dwarf_split_debug_info)
1274 : {
1275 1 : inform (loc, "%<-gsplit-dwarf%> is not supported with LTO,"
1276 : " disabling");
1277 1 : opts->x_dwarf_split_debug_info = 0;
1278 : }
1279 : }
1280 :
1281 : /* We initialize opts->x_flag_split_stack to -1 so that targets can set a
1282 : default value if they choose based on other options. */
1283 642036 : if (opts->x_flag_split_stack == -1)
1284 292845 : opts->x_flag_split_stack = 0;
1285 349191 : else if (opts->x_flag_split_stack)
1286 : {
1287 1719 : if (!targetm_common.supports_split_stack (true, opts))
1288 : {
1289 0 : error_at (loc, "%<-fsplit-stack%> is not supported by "
1290 : "this compiler configuration");
1291 0 : opts->x_flag_split_stack = 0;
1292 : }
1293 : }
1294 :
1295 : /* If stack splitting is turned on, and the user did not explicitly
1296 : request function partitioning, turn off partitioning, as it
1297 : confuses the linker when trying to handle partitioned split-stack
1298 : code that calls a non-split-stack functions. But if partitioning
1299 : was turned on explicitly just hope for the best. */
1300 642036 : if (opts->x_flag_split_stack
1301 1719 : && opts->x_flag_reorder_blocks_and_partition)
1302 1280 : SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_blocks_and_partition, 0);
1303 :
1304 642036 : if (opts->x_flag_reorder_blocks_and_partition)
1305 497317 : SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_functions, 1);
1306 :
1307 642036 : validate_ipa_reorder_locality_lto_partition (opts, opts_set);
1308 :
1309 : /* The -gsplit-dwarf option requires -ggnu-pubnames. */
1310 642036 : if (opts->x_dwarf_split_debug_info)
1311 311 : opts->x_debug_generate_pub_sections = 2;
1312 :
1313 642036 : if ((opts->x_flag_sanitize
1314 642036 : & (SANITIZE_USER_ADDRESS | SANITIZE_KERNEL_ADDRESS)) == 0)
1315 : {
1316 638912 : if (opts->x_flag_sanitize & SANITIZE_POINTER_COMPARE)
1317 0 : error_at (loc,
1318 : "%<-fsanitize=pointer-compare%> must be combined with "
1319 : "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
1320 638912 : if (opts->x_flag_sanitize & SANITIZE_POINTER_SUBTRACT)
1321 0 : error_at (loc,
1322 : "%<-fsanitize=pointer-subtract%> must be combined with "
1323 : "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
1324 : }
1325 :
1326 : /* Address sanitizers conflict with the thread sanitizer. */
1327 642036 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_THREAD,
1328 : SANITIZE_ADDRESS);
1329 642036 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_THREAD,
1330 : SANITIZE_HWADDRESS);
1331 : /* The leak sanitizer conflicts with the thread sanitizer. */
1332 642036 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_LEAK,
1333 : SANITIZE_THREAD);
1334 :
1335 : /* No combination of HWASAN and ASAN work together. */
1336 642036 : report_conflicting_sanitizer_options (opts, loc,
1337 : SANITIZE_HWADDRESS, SANITIZE_ADDRESS);
1338 :
1339 : /* The userspace and kernel address sanitizers conflict with each other. */
1340 642036 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_USER_HWADDRESS,
1341 : SANITIZE_KERNEL_HWADDRESS);
1342 642036 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_USER_ADDRESS,
1343 : SANITIZE_KERNEL_ADDRESS);
1344 :
1345 : /* Sanitizers using Memory-Tagging Extension conflict with HWASAN and
1346 : ASAN. */
1347 642036 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_MEMTAG,
1348 : SANITIZE_HWADDRESS);
1349 642036 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_MEMTAG,
1350 : SANITIZE_ADDRESS);
1351 :
1352 : /* Memtag sanitizer implies HWASAN but with tags always generated by
1353 : the hardware randomly. */
1354 642036 : if ((opts->x_flag_sanitize & SANITIZE_MEMTAG_STACK)
1355 0 : && opts->x_param_hwasan_random_frame_tag == 0)
1356 : {
1357 0 : warning_at (loc, OPT_fsanitize_,
1358 : "%<--param hwasan-random-frame-tag=0%> is ignored when "
1359 : "%<-fsanitize=memtag-stack%> is present");
1360 0 : opts->x_param_hwasan_random_frame_tag = 1;
1361 : }
1362 :
1363 : /* Check error recovery for -fsanitize-recover option. */
1364 22471260 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1365 21829224 : if ((opts->x_flag_sanitize_recover & sanitizer_opts[i].flag)
1366 15404449 : && !sanitizer_opts[i].can_recover)
1367 40 : error_at (loc, "%<-fsanitize-recover=%s%> is not supported",
1368 : sanitizer_opts[i].name);
1369 :
1370 : /* Check -fsanitize-trap option. */
1371 22471260 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1372 21829224 : if ((opts->x_flag_sanitize_trap & sanitizer_opts[i].flag)
1373 4381 : && !sanitizer_opts[i].can_trap
1374 : /* Allow -fsanitize-trap=all or -fsanitize-trap=undefined
1375 : to set flag_sanitize_trap & SANITIZE_VPTR bit which will
1376 : effectively disable -fsanitize=vptr, just disallow
1377 : explicit -fsanitize-trap=vptr. */
1378 184 : && sanitizer_opts[i].flag != SANITIZE_VPTR)
1379 0 : error_at (loc, "%<-fsanitize-trap=%s%> is not supported",
1380 : sanitizer_opts[i].name);
1381 :
1382 : /* When instrumenting the pointers, we don't want to remove
1383 : the null pointer checks. */
1384 642036 : if (opts->x_flag_sanitize & (SANITIZE_NULL | SANITIZE_NONNULL_ATTRIBUTE
1385 : | SANITIZE_RETURNS_NONNULL_ATTRIBUTE))
1386 1691 : opts->x_flag_delete_null_pointer_checks = 0;
1387 :
1388 : /* Aggressive compiler optimizations may cause false negatives. */
1389 642036 : if (opts->x_flag_sanitize & ~(SANITIZE_LEAK | SANITIZE_UNREACHABLE))
1390 7584 : opts->x_flag_aggressive_loop_optimizations = 0;
1391 :
1392 : /* Enable -fsanitize-address-use-after-scope if either address sanitizer is
1393 : enabled. */
1394 642036 : if (opts->x_flag_sanitize
1395 642036 : & (SANITIZE_USER_ADDRESS | SANITIZE_USER_HWADDRESS))
1396 3344 : SET_OPTION_IF_UNSET (opts, opts_set, flag_sanitize_address_use_after_scope,
1397 : true);
1398 :
1399 : /* Force -fstack-reuse=none in case -fsanitize-address-use-after-scope
1400 : is enabled. */
1401 642036 : if (opts->x_flag_sanitize_address_use_after_scope)
1402 : {
1403 3310 : if (opts->x_flag_stack_reuse != SR_NONE
1404 3260 : && opts_set->x_flag_stack_reuse != SR_NONE)
1405 0 : error_at (loc,
1406 : "%<-fsanitize-address-use-after-scope%> requires "
1407 : "%<-fstack-reuse=none%> option");
1408 :
1409 3310 : opts->x_flag_stack_reuse = SR_NONE;
1410 : }
1411 :
1412 642036 : if ((opts->x_flag_sanitize & SANITIZE_USER_ADDRESS) && opts->x_flag_tm)
1413 0 : sorry ("transactional memory is not supported with %<-fsanitize=address%>");
1414 :
1415 642036 : if ((opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS) && opts->x_flag_tm)
1416 0 : sorry ("transactional memory is not supported with "
1417 : "%<-fsanitize=kernel-address%>");
1418 :
1419 : /* Currently live patching is not support for LTO. */
1420 642036 : if (opts->x_flag_live_patching == LIVE_PATCHING_INLINE_ONLY_STATIC && opts->x_flag_lto)
1421 1 : sorry ("live patching (with %qs) is not supported with LTO",
1422 : "inline-only-static");
1423 :
1424 : /* Currently vtable verification is not supported for LTO */
1425 642036 : if (opts->x_flag_vtable_verify && opts->x_flag_lto)
1426 0 : sorry ("vtable verification is not supported with LTO");
1427 :
1428 : /* Control IPA optimizations based on different -flive-patching level. */
1429 642036 : if (opts->x_flag_live_patching)
1430 20 : control_options_for_live_patching (opts, opts_set,
1431 : opts->x_flag_live_patching,
1432 : loc);
1433 :
1434 : /* Allow cunroll to grow size accordingly. */
1435 642036 : if (!opts_set->x_flag_cunroll_grow_size)
1436 642036 : opts->x_flag_cunroll_grow_size
1437 1284072 : = (opts->x_flag_unroll_loops
1438 159179 : || opts->x_flag_peel_loops
1439 1284072 : || opts->x_optimize >= 3);
1440 :
1441 : /* Use -fvect-cost-model=cheap instead of -fvect-cost-mode=very-cheap
1442 : by default with explicit -ftree-{loop,slp}-vectorize. */
1443 642036 : if (opts->x_optimize == 2
1444 468612 : && (opts_set->x_flag_tree_loop_vectorize
1445 468551 : || opts_set->x_flag_tree_vectorize))
1446 349599 : SET_OPTION_IF_UNSET (opts, opts_set, flag_vect_cost_model,
1447 : VECT_COST_MODEL_CHEAP);
1448 :
1449 642036 : if (opts->x_flag_gtoggle)
1450 : {
1451 : /* Make sure to process -gtoggle only once. */
1452 632 : opts->x_flag_gtoggle = false;
1453 632 : if (opts->x_debug_info_level == DINFO_LEVEL_NONE)
1454 : {
1455 383 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
1456 :
1457 383 : if (opts->x_write_symbols == NO_DEBUG)
1458 383 : opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
1459 : }
1460 : else
1461 249 : opts->x_debug_info_level = DINFO_LEVEL_NONE;
1462 : }
1463 :
1464 : /* Also enable markers with -fauto-profile even when debug info is disabled,
1465 : so we assign same discriminators and can read back the profile info. */
1466 642036 : if (!opts_set->x_debug_nonbind_markers_p)
1467 642004 : opts->x_debug_nonbind_markers_p
1468 642004 : = (opts->x_optimize
1469 527901 : && ((opts->x_debug_info_level >= DINFO_LEVEL_NORMAL
1470 52857 : && (dwarf_debuginfo_p (opts) || codeview_debuginfo_p ()))
1471 475053 : || opts->x_flag_auto_profile)
1472 1336856 : && !(opts->x_flag_selective_scheduling
1473 52848 : || opts->x_flag_selective_scheduling2));
1474 :
1475 : /* We know which debug output will be used so we can set flag_var_tracking
1476 : and flag_var_tracking_uninit if the user has not specified them. */
1477 642036 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL
1478 642036 : || (!dwarf_debuginfo_p (opts) && !codeview_debuginfo_p ())
1479 : /* We have not yet initialized debug hooks so match that to check
1480 : whether we're only doing DWARF2_LINENO_DEBUGGING_INFO. */
1481 : #ifndef DWARF2_DEBUGGING_INFO
1482 : || true
1483 : #endif
1484 : )
1485 : {
1486 582729 : if ((opts_set->x_flag_var_tracking && opts->x_flag_var_tracking == 1)
1487 582713 : || (opts_set->x_flag_var_tracking_uninit
1488 0 : && opts->x_flag_var_tracking_uninit == 1))
1489 : {
1490 16 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
1491 15 : warning_at (UNKNOWN_LOCATION, 0,
1492 : "variable tracking requested, but useless unless "
1493 : "producing debug info");
1494 : else
1495 1 : warning_at (UNKNOWN_LOCATION, 0,
1496 : "variable tracking requested, but not supported "
1497 : "by this debug format");
1498 : }
1499 582729 : opts->x_flag_var_tracking = 0;
1500 582729 : opts->x_flag_var_tracking_uninit = 0;
1501 582729 : opts->x_flag_var_tracking_assignments = 0;
1502 : }
1503 :
1504 642036 : if (opts_set->x_flag_var_tracking_uninit && opts->x_flag_var_tracking_uninit)
1505 0 : opts->x_flag_var_tracking = 1;
1506 :
1507 642036 : if (!opts_set->x_flag_var_tracking_assignments)
1508 641962 : opts->x_flag_var_tracking_assignments
1509 1283924 : = (opts->x_flag_var_tracking
1510 1283924 : && !(opts->x_flag_selective_scheduling
1511 52844 : || opts->x_flag_selective_scheduling2));
1512 :
1513 642036 : if (opts->x_flag_var_tracking_assignments_toggle)
1514 0 : opts->x_flag_var_tracking_assignments
1515 0 : = !opts->x_flag_var_tracking_assignments;
1516 :
1517 642036 : if (opts->x_flag_var_tracking_assignments && !opts->x_flag_var_tracking)
1518 2 : opts->x_flag_var_tracking = opts->x_flag_var_tracking_assignments = -1;
1519 :
1520 642036 : if (opts->x_flag_var_tracking_assignments
1521 52851 : && (opts->x_flag_selective_scheduling
1522 52851 : || opts->x_flag_selective_scheduling2))
1523 5 : warning_at (loc, 0,
1524 : "var-tracking-assignments changes selective scheduling");
1525 :
1526 642036 : if (opts->x_flag_syntax_only)
1527 : {
1528 284 : opts->x_write_symbols = NO_DEBUG;
1529 284 : opts->x_profile_flag = 0;
1530 : }
1531 :
1532 642036 : if (opts->x_warn_strict_flex_arrays)
1533 13 : if (opts->x_flag_strict_flex_arrays == 0)
1534 : {
1535 4 : opts->x_warn_strict_flex_arrays = 0;
1536 4 : warning_at (UNKNOWN_LOCATION, 0,
1537 : "%<-Wstrict-flex-arrays%> is ignored when"
1538 : " %<-fstrict-flex-arrays%> is not present");
1539 : }
1540 :
1541 642036 : if (opts->x_flag_openmp_ompt && !opts->x_flag_openmp)
1542 8 : error_at (loc, "%<-fopenmp-ompt%> requires %<-fopenmp%>");
1543 :
1544 642036 : diagnose_options (opts, opts_set, loc);
1545 642036 : }
1546 :
1547 : /* The function diagnoses incompatible combinations for provided options
1548 : (OPTS and OPTS_SET) at a given LOCation. The function is called both
1549 : when command line is parsed (after the target optimization hook) and
1550 : when an optimize/target attribute (or pragma) is used. */
1551 :
1552 936499 : void diagnose_options (gcc_options *opts, gcc_options *opts_set,
1553 : location_t loc)
1554 : {
1555 : /* The optimization to partition hot and cold basic blocks into separate
1556 : sections of the .o and executable files does not work (currently)
1557 : with exception handling. This is because there is no support for
1558 : generating unwind info. If opts->x_flag_exceptions is turned on
1559 : we need to turn off the partitioning optimization. */
1560 :
1561 936499 : enum unwind_info_type ui_except
1562 936499 : = targetm_common.except_unwind_info (opts);
1563 :
1564 936499 : if (opts->x_flag_exceptions
1565 267659 : && opts->x_flag_reorder_blocks_and_partition
1566 90192 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
1567 : {
1568 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1569 0 : inform (loc,
1570 : "%<-freorder-blocks-and-partition%> does not work "
1571 : "with exceptions on this architecture");
1572 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1573 0 : opts->x_flag_reorder_blocks = 1;
1574 : }
1575 :
1576 : /* If user requested unwind info, then turn off the partitioning
1577 : optimization. */
1578 :
1579 936499 : if (opts->x_flag_unwind_tables
1580 642917 : && !targetm_common.unwind_tables_default
1581 642917 : && opts->x_flag_reorder_blocks_and_partition
1582 495452 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
1583 : {
1584 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1585 0 : inform (loc,
1586 : "%<-freorder-blocks-and-partition%> does not support "
1587 : "unwind info on this architecture");
1588 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1589 0 : opts->x_flag_reorder_blocks = 1;
1590 : }
1591 :
1592 : /* If the target requested unwind info, then turn off the partitioning
1593 : optimization with a different message. Likewise, if the target does not
1594 : support named sections. */
1595 :
1596 936499 : if (opts->x_flag_reorder_blocks_and_partition
1597 645252 : && (!targetm_common.have_named_sections
1598 645252 : || (opts->x_flag_unwind_tables
1599 495452 : && targetm_common.unwind_tables_default
1600 0 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))))
1601 : {
1602 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1603 0 : inform (loc,
1604 : "%<-freorder-blocks-and-partition%> does not work "
1605 : "on this architecture");
1606 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1607 0 : opts->x_flag_reorder_blocks = 1;
1608 : }
1609 :
1610 :
1611 936499 : }
1612 :
1613 : #define LEFT_COLUMN 27
1614 :
1615 : /* Output ITEM, of length ITEM_WIDTH, in the left column,
1616 : followed by word-wrapped HELP in a second column. */
1617 : static void
1618 26880 : wrap_help (const char *help,
1619 : const char *item,
1620 : unsigned int item_width,
1621 : unsigned int columns)
1622 : {
1623 26880 : unsigned int col_width = LEFT_COLUMN;
1624 26880 : unsigned int remaining, room, len;
1625 :
1626 26880 : remaining = strlen (help);
1627 :
1628 36304 : do
1629 : {
1630 36304 : room = columns - 3 - MAX (col_width, item_width);
1631 36304 : if (room > columns)
1632 0 : room = 0;
1633 36304 : len = remaining;
1634 :
1635 36304 : if (room < len)
1636 : {
1637 : unsigned int i;
1638 :
1639 423387 : for (i = 0; help[i]; i++)
1640 : {
1641 423387 : if (i >= room && len != remaining)
1642 : break;
1643 413963 : if (help[i] == ' ')
1644 : len = i;
1645 352068 : else if ((help[i] == '-' || help[i] == '/')
1646 1501 : && help[i + 1] != ' '
1647 1501 : && i > 0 && ISALPHA (help[i - 1]))
1648 413963 : len = i + 1;
1649 : }
1650 : }
1651 :
1652 36304 : printf (" %-*.*s %.*s\n", col_width, item_width, item, len, help);
1653 36304 : item_width = 0;
1654 81864 : while (help[len] == ' ')
1655 9256 : len++;
1656 36304 : help += len;
1657 36304 : remaining -= len;
1658 : }
1659 36304 : while (remaining);
1660 26880 : }
1661 :
1662 : /* Data structure used to print list of valid option values. */
1663 :
1664 : class option_help_tuple
1665 : {
1666 : public:
1667 14 : option_help_tuple (int code, vec<const char *> values):
1668 14 : m_code (code), m_values (values)
1669 : {}
1670 :
1671 : /* Code of an option. */
1672 : int m_code;
1673 :
1674 : /* List of possible values. */
1675 : vec<const char *> m_values;
1676 : };
1677 :
1678 : /* Print help for a specific front-end, etc. */
1679 : static void
1680 129 : print_filtered_help (unsigned int include_flags,
1681 : unsigned int exclude_flags,
1682 : unsigned int any_flags,
1683 : unsigned int columns,
1684 : struct gcc_options *opts,
1685 : unsigned int lang_mask)
1686 : {
1687 129 : unsigned int i;
1688 129 : const char *help;
1689 129 : bool found = false;
1690 129 : bool displayed = false;
1691 129 : char new_help[256];
1692 :
1693 129 : if (!opts->x_help_printed)
1694 64 : opts->x_help_printed = XCNEWVAR (char, cl_options_count);
1695 :
1696 129 : if (!opts->x_help_enum_printed)
1697 64 : opts->x_help_enum_printed = XCNEWVAR (char, cl_enums_count);
1698 :
1699 129 : auto_vec<option_help_tuple> help_tuples;
1700 :
1701 335142 : for (i = 0; i < cl_options_count; i++)
1702 : {
1703 335013 : const struct cl_option *option = cl_options + i;
1704 335013 : unsigned int len;
1705 335013 : const char *opt;
1706 335013 : const char *tab;
1707 :
1708 335013 : if (include_flags == 0
1709 327222 : || ((option->flags & include_flags) != include_flags))
1710 : {
1711 295638 : if ((option->flags & any_flags) == 0)
1712 292218 : continue;
1713 : }
1714 :
1715 : /* Skip unwanted switches. */
1716 42795 : if ((option->flags & exclude_flags) != 0)
1717 9956 : continue;
1718 :
1719 : /* The driver currently prints its own help text. */
1720 32839 : if ((option->flags & CL_DRIVER) != 0
1721 861 : && (option->flags & (((1U << cl_lang_count) - 1)
1722 767 : | CL_COMMON | CL_TARGET)) == 0)
1723 94 : continue;
1724 :
1725 : /* If an option contains a language specification,
1726 : exclude it from common unless all languages are present. */
1727 32745 : if ((include_flags & CL_COMMON)
1728 4866 : && !(option->flags & CL_DRIVER)
1729 4476 : && (option->flags & CL_LANG_ALL)
1730 140 : && (option->flags & CL_LANG_ALL) != CL_LANG_ALL)
1731 140 : continue;
1732 :
1733 32605 : found = true;
1734 : /* Skip switches that have already been printed. */
1735 32605 : if (opts->x_help_printed[i])
1736 5714 : continue;
1737 :
1738 26891 : opts->x_help_printed[i] = true;
1739 :
1740 26891 : help = option->help;
1741 26891 : if (help == NULL)
1742 : {
1743 1574 : if (exclude_flags & CL_UNDOCUMENTED)
1744 11 : continue;
1745 :
1746 : help = undocumented_msg;
1747 : }
1748 :
1749 : /* Get the translation. */
1750 26880 : help = _(help);
1751 :
1752 26880 : if (option->alias_target < N_OPTS
1753 1603 : && cl_options [option->alias_target].help)
1754 : {
1755 1570 : const struct cl_option *target = cl_options + option->alias_target;
1756 1570 : if (option->help == NULL)
1757 : {
1758 : /* The option is undocumented but is an alias for an option that
1759 : is documented. If the option has alias arguments, then its
1760 : purpose is to provide certain arguments to the other option, so
1761 : inform the reader of this. Otherwise, point the reader to the
1762 : other option in preference to the former. */
1763 :
1764 928 : if (option->alias_arg)
1765 : {
1766 154 : if (option->neg_alias_arg)
1767 127 : snprintf (new_help, sizeof new_help,
1768 127 : _("Same as %s%s (or, in negated form, %s%s)."),
1769 : target->opt_text, option->alias_arg,
1770 127 : target->opt_text, option->neg_alias_arg);
1771 : else
1772 27 : snprintf (new_help, sizeof new_help,
1773 27 : _("Same as %s%s."),
1774 27 : target->opt_text, option->alias_arg);
1775 : }
1776 : else
1777 774 : snprintf (new_help, sizeof new_help,
1778 774 : _("Same as %s."),
1779 774 : target->opt_text);
1780 : }
1781 : else
1782 : {
1783 : /* For documented options with aliases, mention the aliased
1784 : option's name for reference. */
1785 642 : snprintf (new_help, sizeof new_help,
1786 642 : _("%s Same as %s."),
1787 642 : help, cl_options [option->alias_target].opt_text);
1788 : }
1789 :
1790 : help = new_help;
1791 : }
1792 :
1793 26880 : if (option->warn_message)
1794 : {
1795 : /* Mention that the use of the option will trigger a warning. */
1796 50 : if (help == new_help)
1797 43 : snprintf (new_help + strlen (new_help),
1798 43 : sizeof new_help - strlen (new_help),
1799 : " %s", _(use_diagnosed_msg));
1800 : else
1801 7 : snprintf (new_help, sizeof new_help,
1802 : "%s %s", help, _(use_diagnosed_msg));
1803 :
1804 : help = new_help;
1805 : }
1806 :
1807 : /* Find the gap between the name of the
1808 : option and its descriptive text. */
1809 26880 : tab = strchr (help, '\t');
1810 26880 : if (tab)
1811 : {
1812 1628 : len = tab - help;
1813 1628 : opt = help;
1814 1628 : help = tab + 1;
1815 : }
1816 : else
1817 : {
1818 25252 : opt = option->opt_text;
1819 25252 : len = strlen (opt);
1820 : }
1821 :
1822 : /* With the -Q option enabled we change the descriptive text associated
1823 : with an option to be an indication of its current setting. */
1824 26880 : if (!opts->x_quiet_flag)
1825 : {
1826 2856 : void *flag_var = option_flag_var (i, opts);
1827 :
1828 2856 : if (len < (LEFT_COLUMN + 2))
1829 2552 : strcpy (new_help, "\t\t");
1830 : else
1831 304 : strcpy (new_help, "\t");
1832 :
1833 : /* Set to print whether the option is enabled or disabled,
1834 : or, if it's an alias for another option, the name of
1835 : the aliased option. */
1836 2856 : bool print_state = false;
1837 :
1838 2856 : if (flag_var != NULL
1839 2602 : && option->var_type != CLVC_DEFER)
1840 : {
1841 : /* If OPTION is only available for a specific subset
1842 : of languages other than this one, mention them. */
1843 2602 : bool avail_for_lang = true;
1844 2602 : if (unsigned langset = option->flags & CL_LANG_ALL)
1845 : {
1846 1604 : if (!(langset & lang_mask))
1847 : {
1848 770 : avail_for_lang = false;
1849 770 : strcat (new_help, _("[available in "));
1850 13090 : for (unsigned i = 0, n = 0; (1U << i) < CL_LANG_ALL; ++i)
1851 12320 : if (langset & (1U << i))
1852 : {
1853 1126 : if (n++)
1854 356 : strcat (new_help, ", ");
1855 1126 : strcat (new_help, lang_names[i]);
1856 : }
1857 770 : strcat (new_help, "]");
1858 : }
1859 : }
1860 770 : if (!avail_for_lang)
1861 : ; /* Print nothing else if the option is not available
1862 : in the current language. */
1863 1832 : else if (option->flags & CL_JOINED)
1864 : {
1865 159 : if (option->var_type == CLVC_STRING)
1866 : {
1867 10 : if (* (const char **) flag_var != NULL)
1868 8 : snprintf (new_help + strlen (new_help),
1869 8 : sizeof (new_help) - strlen (new_help),
1870 : "%s", * (const char **) flag_var);
1871 : }
1872 149 : else if (option->var_type == CLVC_ENUM)
1873 : {
1874 53 : const struct cl_enum *e = &cl_enums[option->var_enum];
1875 53 : int value;
1876 53 : const char *arg = NULL;
1877 :
1878 53 : value = e->get (flag_var);
1879 53 : enum_value_to_arg (e->values, &arg, value, lang_mask);
1880 53 : if (arg == NULL)
1881 10 : arg = _("[default]");
1882 53 : snprintf (new_help + strlen (new_help),
1883 53 : sizeof (new_help) - strlen (new_help),
1884 : "%s", arg);
1885 : }
1886 : else
1887 : {
1888 96 : if (option->cl_host_wide_int)
1889 24 : sprintf (new_help + strlen (new_help),
1890 24 : _("%llu bytes"), (unsigned long long)
1891 : *(unsigned HOST_WIDE_INT *) flag_var);
1892 : else
1893 72 : sprintf (new_help + strlen (new_help),
1894 : "%i", * (int *) flag_var);
1895 : }
1896 : }
1897 : else
1898 : print_state = true;
1899 : }
1900 : else
1901 : /* When there is no argument, print the option state only
1902 : if the option takes no argument. */
1903 254 : print_state = !(option->flags & CL_JOINED);
1904 :
1905 1181 : if (print_state)
1906 : {
1907 1901 : if (option->alias_target < N_OPTS
1908 : && option->alias_target != OPT_SPECIAL_warn_removed
1909 : && option->alias_target != OPT_SPECIAL_ignore
1910 : && option->alias_target != OPT_SPECIAL_input_file
1911 : && option->alias_target != OPT_SPECIAL_program_name
1912 : && option->alias_target != OPT_SPECIAL_unknown)
1913 : {
1914 166 : const struct cl_option *target
1915 166 : = &cl_options[option->alias_target];
1916 332 : sprintf (new_help + strlen (new_help), "%s%s",
1917 166 : target->opt_text,
1918 166 : option->alias_arg ? option->alias_arg : "");
1919 : }
1920 1735 : else if (option->alias_target == OPT_SPECIAL_ignore)
1921 20 : strcat (new_help, ("[ignored]"));
1922 : else
1923 : {
1924 : /* Print the state for an on/off option. */
1925 1715 : int ena = option_enabled (i, lang_mask, opts);
1926 1715 : if (ena > 0)
1927 792 : strcat (new_help, _("[enabled]"));
1928 923 : else if (ena == 0)
1929 824 : strcat (new_help, _("[disabled]"));
1930 : }
1931 : }
1932 :
1933 : help = new_help;
1934 : }
1935 :
1936 26880 : if (option->range_max != -1 && tab == NULL)
1937 : {
1938 3614 : char b[128];
1939 3614 : snprintf (b, sizeof (b), "<%d,%d>", option->range_min,
1940 : option->range_max);
1941 3614 : opt = concat (opt, b, NULL);
1942 3614 : len += strlen (b);
1943 : }
1944 :
1945 26880 : wrap_help (help, opt, len, columns);
1946 26880 : displayed = true;
1947 :
1948 26880 : if (option->var_type == CLVC_ENUM
1949 883 : && opts->x_help_enum_printed[option->var_enum] != 2)
1950 883 : opts->x_help_enum_printed[option->var_enum] = 1;
1951 : else
1952 : {
1953 25997 : vec<const char *> option_values
1954 25997 : = targetm_common.get_valid_option_values (i, NULL);
1955 26011 : if (!option_values.is_empty ())
1956 14 : help_tuples.safe_push (option_help_tuple (i, option_values));
1957 : }
1958 : }
1959 :
1960 129 : if (! found)
1961 : {
1962 9 : unsigned int langs = include_flags & CL_LANG_ALL;
1963 :
1964 9 : if (langs == 0)
1965 0 : printf (_(" No options with the desired characteristics were found\n"));
1966 : else
1967 : {
1968 : unsigned int i;
1969 :
1970 : /* PR 31349: Tell the user how to see all of the
1971 : options supported by a specific front end. */
1972 153 : for (i = 0; (1U << i) < CL_LANG_ALL; i ++)
1973 144 : if ((1U << i) & langs)
1974 9 : printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end.\n"),
1975 9 : lang_names[i], lang_names[i]);
1976 : }
1977 :
1978 : }
1979 120 : else if (! displayed)
1980 0 : printf (_(" All options with the desired characteristics have already been displayed\n"));
1981 :
1982 129 : putchar ('\n');
1983 :
1984 : /* Print details of enumerated option arguments, if those
1985 : enumerations have help text headings provided. If no help text
1986 : is provided, presume that the possible values are listed in the
1987 : help text for the relevant options. */
1988 11481 : for (i = 0; i < cl_enums_count; i++)
1989 : {
1990 11223 : unsigned int j, pos;
1991 :
1992 11223 : if (opts->x_help_enum_printed[i] != 1)
1993 9486 : continue;
1994 1737 : if (cl_enums[i].help == NULL)
1995 1639 : continue;
1996 98 : printf (" %s\n ", _(cl_enums[i].help));
1997 98 : pos = 4;
1998 553 : for (j = 0; cl_enums[i].values[j].arg != NULL; j++)
1999 : {
2000 357 : unsigned int len = strlen (cl_enums[i].values[j].arg);
2001 :
2002 357 : if (pos > 4 && pos + 1 + len <= columns)
2003 : {
2004 258 : printf (" %s", cl_enums[i].values[j].arg);
2005 258 : pos += 1 + len;
2006 : }
2007 : else
2008 : {
2009 1 : if (pos > 4)
2010 : {
2011 1 : printf ("\n ");
2012 1 : pos = 4;
2013 : }
2014 99 : printf ("%s", cl_enums[i].values[j].arg);
2015 99 : pos += len;
2016 : }
2017 : }
2018 98 : printf ("\n\n");
2019 98 : opts->x_help_enum_printed[i] = 2;
2020 : }
2021 :
2022 143 : for (unsigned i = 0; i < help_tuples.length (); i++)
2023 : {
2024 14 : const struct cl_option *option = cl_options + help_tuples[i].m_code;
2025 14 : printf (_(" Known valid arguments for %s option:\n "),
2026 14 : option->opt_text);
2027 1316 : for (unsigned j = 0; j < help_tuples[i].m_values.length (); j++)
2028 1288 : printf (" %s", help_tuples[i].m_values[j]);
2029 14 : printf ("\n\n");
2030 : }
2031 129 : }
2032 :
2033 : /* Display help for a specified type of option.
2034 : The options must have ALL of the INCLUDE_FLAGS set
2035 : ANY of the flags in the ANY_FLAGS set
2036 : and NONE of the EXCLUDE_FLAGS set. The current option state is in
2037 : OPTS; LANG_MASK is used for interpreting enumerated option state. */
2038 : static void
2039 129 : print_specific_help (unsigned int include_flags,
2040 : unsigned int exclude_flags,
2041 : unsigned int any_flags,
2042 : struct gcc_options *opts,
2043 : unsigned int lang_mask)
2044 : {
2045 129 : unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
2046 129 : const char * description = NULL;
2047 129 : const char * descrip_extra = "";
2048 129 : size_t i;
2049 129 : unsigned int flag;
2050 :
2051 : /* Sanity check: Make sure that we do not have more
2052 : languages than we have bits available to enumerate them. */
2053 129 : gcc_assert ((1U << cl_lang_count) <= CL_MIN_OPTION_CLASS);
2054 :
2055 : /* If we have not done so already, obtain
2056 : the desired maximum width of the output. */
2057 129 : if (opts->x_help_columns == 0)
2058 : {
2059 64 : opts->x_help_columns = get_terminal_width ();
2060 64 : if (opts->x_help_columns == INT_MAX)
2061 : /* Use a reasonable default. */
2062 20 : opts->x_help_columns = 80;
2063 : }
2064 :
2065 : /* Decide upon the title for the options that we are going to display. */
2066 2967 : for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++)
2067 : {
2068 2838 : switch (flag & include_flags)
2069 : {
2070 : case 0:
2071 : case CL_DRIVER:
2072 : break;
2073 :
2074 7 : case CL_TARGET:
2075 7 : description = _("The following options are target specific");
2076 7 : break;
2077 11 : case CL_WARNING:
2078 11 : description = _("The following options control compiler warning messages");
2079 11 : break;
2080 10 : case CL_OPTIMIZATION:
2081 10 : description = _("The following options control optimizations");
2082 10 : break;
2083 5 : case CL_COMMON:
2084 5 : description = _("The following options are language-independent");
2085 5 : break;
2086 26 : case CL_PARAMS:
2087 26 : description = _("The following options control parameters");
2088 26 : break;
2089 62 : default:
2090 62 : if (i >= cl_lang_count)
2091 : break;
2092 62 : if (exclude_flags & all_langs_mask)
2093 48 : description = _("The following options are specific to just the language ");
2094 : else
2095 14 : description = _("The following options are supported by the language ");
2096 62 : descrip_extra = lang_names [i];
2097 62 : break;
2098 : }
2099 : }
2100 :
2101 129 : if (description == NULL)
2102 : {
2103 9 : if (any_flags == 0)
2104 : {
2105 6 : if (include_flags & CL_UNDOCUMENTED)
2106 2 : description = _("The following options are not documented");
2107 4 : else if (include_flags & CL_SEPARATE)
2108 2 : description = _("The following options take separate arguments");
2109 2 : else if (include_flags & CL_JOINED)
2110 2 : description = _("The following options take joined arguments");
2111 : else
2112 : {
2113 0 : internal_error ("unrecognized %<include_flags 0x%x%> passed "
2114 : "to %<print_specific_help%>",
2115 : include_flags);
2116 : return;
2117 : }
2118 : }
2119 : else
2120 : {
2121 3 : if (any_flags & all_langs_mask)
2122 3 : description = _("The following options are language-related");
2123 : else
2124 0 : description = _("The following options are language-independent");
2125 : }
2126 : }
2127 :
2128 129 : printf ("%s%s:\n", description, descrip_extra);
2129 129 : print_filtered_help (include_flags, exclude_flags, any_flags,
2130 : opts->x_help_columns, opts, lang_mask);
2131 : }
2132 :
2133 : /* Enable FDO-related flags. */
2134 :
2135 : static void
2136 159 : enable_fdo_optimizations (struct gcc_options *opts,
2137 : struct gcc_options *opts_set,
2138 : int value, bool autofdo)
2139 : {
2140 159 : if (!autofdo)
2141 : {
2142 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_branch_probabilities, value);
2143 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
2144 : }
2145 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_value_profile_transformations,
2146 : value);
2147 :
2148 : /* Enable IPA optimizatins that makes effective use of profile data. */
2149 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
2150 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp, value);
2151 159 : if (value)
2152 : {
2153 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp_clone, 1);
2154 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, 1);
2155 : }
2156 :
2157 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_gcse_after_reload, value);
2158 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tracer, value);
2159 :
2160 : /* Loop optimizations uses profile feedback to determine their profitability
2161 : and thus it makes sense to enable them by default even at -O2.
2162 : Auto-profile, in its current form, is not very good on determining
2163 : iteration counts and thus only real profile feedback is used. */
2164 159 : if (!autofdo)
2165 : {
2166 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_loops, value);
2167 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_peel_loops, value);
2168 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_predictive_commoning, value);
2169 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_split_loops, value);
2170 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unswitch_loops, value);
2171 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_vectorize, value);
2172 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_slp_vectorize, value);
2173 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_version_loops_for_strides, value);
2174 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_vect_cost_model,
2175 : VECT_COST_MODEL_DYNAMIC);
2176 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribute_patterns,
2177 : value);
2178 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_loop_interchange, value);
2179 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_jam, value);
2180 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribution, value);
2181 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_optimize_crc, value);
2182 : }
2183 159 : }
2184 :
2185 : /* -f{,no-}sanitize{,-recover}= suboptions. */
2186 : const struct sanitizer_opts_s sanitizer_opts[] =
2187 : {
2188 : #define SANITIZER_OPT(name, flags, recover, trap) \
2189 : { #name, flags, sizeof #name - 1, recover, trap }
2190 : SANITIZER_OPT (address, (SANITIZE_ADDRESS | SANITIZE_USER_ADDRESS), true,
2191 : false),
2192 : SANITIZER_OPT (hwaddress, (SANITIZE_HWADDRESS | SANITIZE_USER_HWADDRESS),
2193 : true, false),
2194 : SANITIZER_OPT (kernel-address, (SANITIZE_ADDRESS | SANITIZE_KERNEL_ADDRESS),
2195 : true, false),
2196 : SANITIZER_OPT (kernel-hwaddress,
2197 : (SANITIZE_HWADDRESS | SANITIZE_KERNEL_HWADDRESS),
2198 : true, false),
2199 : SANITIZER_OPT (pointer-compare, SANITIZE_POINTER_COMPARE, true, false),
2200 : SANITIZER_OPT (pointer-subtract, SANITIZE_POINTER_SUBTRACT, true, false),
2201 : SANITIZER_OPT (thread, SANITIZE_THREAD, false, false),
2202 : SANITIZER_OPT (leak, SANITIZE_LEAK, false, false),
2203 : SANITIZER_OPT (shift, SANITIZE_SHIFT, true, true),
2204 : SANITIZER_OPT (shift-base, SANITIZE_SHIFT_BASE, true, true),
2205 : SANITIZER_OPT (shift-exponent, SANITIZE_SHIFT_EXPONENT, true, true),
2206 : SANITIZER_OPT (integer-divide-by-zero, SANITIZE_DIVIDE, true, true),
2207 : SANITIZER_OPT (undefined, SANITIZE_UNDEFINED, true, true),
2208 : SANITIZER_OPT (unreachable, SANITIZE_UNREACHABLE, false, true),
2209 : SANITIZER_OPT (vla-bound, SANITIZE_VLA, true, true),
2210 : SANITIZER_OPT (return, SANITIZE_RETURN, false, true),
2211 : SANITIZER_OPT (null, SANITIZE_NULL, true, true),
2212 : SANITIZER_OPT (signed-integer-overflow, SANITIZE_SI_OVERFLOW, true, true),
2213 : SANITIZER_OPT (bool, SANITIZE_BOOL, true, true),
2214 : SANITIZER_OPT (enum, SANITIZE_ENUM, true, true),
2215 : SANITIZER_OPT (float-divide-by-zero, SANITIZE_FLOAT_DIVIDE, true, true),
2216 : SANITIZER_OPT (float-cast-overflow, SANITIZE_FLOAT_CAST, true, true),
2217 : SANITIZER_OPT (bounds, SANITIZE_BOUNDS, true, true),
2218 : SANITIZER_OPT (bounds-strict, SANITIZE_BOUNDS | SANITIZE_BOUNDS_STRICT, true,
2219 : true),
2220 : SANITIZER_OPT (alignment, SANITIZE_ALIGNMENT, true, true),
2221 : SANITIZER_OPT (nonnull-attribute, SANITIZE_NONNULL_ATTRIBUTE, true, true),
2222 : SANITIZER_OPT (returns-nonnull-attribute, SANITIZE_RETURNS_NONNULL_ATTRIBUTE,
2223 : true, true),
2224 : SANITIZER_OPT (object-size, SANITIZE_OBJECT_SIZE, true, true),
2225 : SANITIZER_OPT (vptr, SANITIZE_VPTR, true, false),
2226 : SANITIZER_OPT (pointer-overflow, SANITIZE_POINTER_OVERFLOW, true, true),
2227 : SANITIZER_OPT (builtin, SANITIZE_BUILTIN, true, true),
2228 : SANITIZER_OPT (shadow-call-stack, SANITIZE_SHADOW_CALL_STACK, false, false),
2229 : SANITIZER_OPT (memtag-stack, SANITIZE_MEMTAG_STACK, false, false),
2230 : SANITIZER_OPT (all, ~sanitize_code_type (0), true, true),
2231 : #undef SANITIZER_OPT
2232 : { NULL, sanitize_code_type (0), 0UL, false, false }
2233 : };
2234 :
2235 : /* -fzero-call-used-regs= suboptions. */
2236 : const struct zero_call_used_regs_opts_s zero_call_used_regs_opts[] =
2237 : {
2238 : #define ZERO_CALL_USED_REGS_OPT(name, flags) \
2239 : { #name, flags }
2240 : ZERO_CALL_USED_REGS_OPT (skip, zero_regs_flags::SKIP),
2241 : ZERO_CALL_USED_REGS_OPT (used-gpr-arg, zero_regs_flags::USED_GPR_ARG),
2242 : ZERO_CALL_USED_REGS_OPT (used-gpr, zero_regs_flags::USED_GPR),
2243 : ZERO_CALL_USED_REGS_OPT (used-arg, zero_regs_flags::USED_ARG),
2244 : ZERO_CALL_USED_REGS_OPT (used, zero_regs_flags::USED),
2245 : ZERO_CALL_USED_REGS_OPT (all-gpr-arg, zero_regs_flags::ALL_GPR_ARG),
2246 : ZERO_CALL_USED_REGS_OPT (all-gpr, zero_regs_flags::ALL_GPR),
2247 : ZERO_CALL_USED_REGS_OPT (all-arg, zero_regs_flags::ALL_ARG),
2248 : ZERO_CALL_USED_REGS_OPT (all, zero_regs_flags::ALL),
2249 : ZERO_CALL_USED_REGS_OPT (leafy-gpr-arg, zero_regs_flags::LEAFY_GPR_ARG),
2250 : ZERO_CALL_USED_REGS_OPT (leafy-gpr, zero_regs_flags::LEAFY_GPR),
2251 : ZERO_CALL_USED_REGS_OPT (leafy-arg, zero_regs_flags::LEAFY_ARG),
2252 : ZERO_CALL_USED_REGS_OPT (leafy, zero_regs_flags::LEAFY),
2253 : #undef ZERO_CALL_USED_REGS_OPT
2254 : {NULL, 0U}
2255 : };
2256 :
2257 : /* A struct for describing a run of chars within a string. */
2258 :
2259 : class string_fragment
2260 : {
2261 : public:
2262 6 : string_fragment (const char *start, size_t len)
2263 6 : : m_start (start), m_len (len) {}
2264 :
2265 : const char *m_start;
2266 : size_t m_len;
2267 : };
2268 :
2269 : /* Specialization of edit_distance_traits for string_fragment,
2270 : for use by get_closest_sanitizer_option. */
2271 :
2272 : template <>
2273 : struct edit_distance_traits<const string_fragment &>
2274 : {
2275 6 : static size_t get_length (const string_fragment &fragment)
2276 : {
2277 6 : return fragment.m_len;
2278 : }
2279 :
2280 6 : static const char *get_string (const string_fragment &fragment)
2281 : {
2282 6 : return fragment.m_start;
2283 : }
2284 : };
2285 :
2286 : /* Given ARG, an unrecognized sanitizer option, return the best
2287 : matching sanitizer option, or NULL if there isn't one.
2288 : OPTS is array of candidate sanitizer options.
2289 : CODE is OPT_fsanitize_, OPT_fsanitize_recover_ or OPT_fsanitize_trap_.
2290 : VALUE is non-zero for the regular form of the option, zero
2291 : for the "no-" form (e.g. "-fno-sanitize-recover="). */
2292 :
2293 : static const char *
2294 6 : get_closest_sanitizer_option (const string_fragment &arg,
2295 : const struct sanitizer_opts_s *opts,
2296 : enum opt_code code, int value)
2297 : {
2298 6 : best_match <const string_fragment &, const char*> bm (arg);
2299 210 : for (int i = 0; opts[i].name != NULL; ++i)
2300 : {
2301 : /* -fsanitize=all is not valid, so don't offer it. */
2302 204 : if (code == OPT_fsanitize_
2303 170 : && opts[i].flag == ~sanitize_code_type (0)
2304 5 : && value)
2305 4 : continue;
2306 :
2307 : /* For -fsanitize-recover= (and not -fno-sanitize-recover=),
2308 : don't offer the non-recoverable options. */
2309 200 : if (code == OPT_fsanitize_recover_
2310 34 : && !opts[i].can_recover
2311 6 : && value)
2312 6 : continue;
2313 :
2314 : /* For -fsanitize-trap= (and not -fno-sanitize-trap=),
2315 : don't offer the non-trapping options. */
2316 194 : if (code == OPT_fsanitize_trap_
2317 0 : && !opts[i].can_trap
2318 0 : && value)
2319 0 : continue;
2320 :
2321 194 : bm.consider (opts[i].name);
2322 : }
2323 6 : return bm.get_best_meaningful_candidate ();
2324 : }
2325 :
2326 : /* Parse comma separated sanitizer suboptions from P for option SCODE,
2327 : adjust previous FLAGS and return new ones. If COMPLAIN is false,
2328 : don't issue diagnostics. */
2329 :
2330 : sanitize_code_type
2331 19318 : parse_sanitizer_options (const char *p, location_t loc, int scode,
2332 : sanitize_code_type flags, int value, bool complain)
2333 : {
2334 19318 : enum opt_code code = (enum opt_code) scode;
2335 :
2336 20253 : while (*p != 0)
2337 : {
2338 20253 : size_t len, i;
2339 20253 : bool found = false;
2340 20253 : const char *comma = strchr (p, ',');
2341 :
2342 20253 : if (comma == NULL)
2343 19318 : len = strlen (p);
2344 : else
2345 935 : len = comma - p;
2346 20253 : if (len == 0)
2347 : {
2348 0 : p = comma + 1;
2349 0 : continue;
2350 : }
2351 :
2352 : /* Check to see if the string matches an option class name. */
2353 188803 : for (i = 0; sanitizer_opts[i].name != NULL; ++i)
2354 188797 : if (len == sanitizer_opts[i].len
2355 29551 : && memcmp (p, sanitizer_opts[i].name, len) == 0)
2356 : {
2357 : /* Handle both -fsanitize and -fno-sanitize cases. */
2358 20247 : if (value && sanitizer_opts[i].flag == ~sanitize_code_type (0))
2359 : {
2360 42 : if (code == OPT_fsanitize_)
2361 : {
2362 3 : if (complain)
2363 3 : error_at (loc, "%<-fsanitize=all%> option is not valid");
2364 : }
2365 39 : else if (code == OPT_fsanitize_recover_)
2366 13 : flags |= ~(SANITIZE_THREAD | SANITIZE_LEAK
2367 : | SANITIZE_UNREACHABLE | SANITIZE_RETURN
2368 : | SANITIZE_SHADOW_CALL_STACK
2369 : | SANITIZE_MEMTAG_STACK);
2370 : else /* if (code == OPT_fsanitize_trap_) */
2371 26 : flags |= (SANITIZE_UNDEFINED
2372 : | SANITIZE_UNDEFINED_NONDEFAULT);
2373 : }
2374 18925 : else if (value)
2375 : {
2376 : /* Do not enable -fsanitize-recover=unreachable and
2377 : -fsanitize-recover=return if -fsanitize-recover=undefined
2378 : is selected. */
2379 18925 : if (code == OPT_fsanitize_recover_
2380 404 : && sanitizer_opts[i].flag == SANITIZE_UNDEFINED)
2381 40 : flags |= (SANITIZE_UNDEFINED
2382 : & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN));
2383 18885 : else if (code == OPT_fsanitize_trap_
2384 176 : && sanitizer_opts[i].flag == SANITIZE_VPTR)
2385 0 : error_at (loc, "%<-fsanitize-trap=%s%> is not supported",
2386 : sanitizer_opts[i].name);
2387 : else
2388 18885 : flags |= sanitizer_opts[i].flag;
2389 : }
2390 : else
2391 : {
2392 1280 : flags &= ~sanitizer_opts[i].flag;
2393 : /* Don't always clear SANITIZE_ADDRESS if it was previously
2394 : set: -fsanitize=address -fno-sanitize=kernel-address should
2395 : leave SANITIZE_ADDRESS set. */
2396 1280 : if (flags & (SANITIZE_KERNEL_ADDRESS | SANITIZE_USER_ADDRESS))
2397 754 : flags |= SANITIZE_ADDRESS;
2398 : }
2399 : found = true;
2400 : break;
2401 : }
2402 :
2403 20253 : if (! found && complain)
2404 : {
2405 6 : const char *hint
2406 6 : = get_closest_sanitizer_option (string_fragment (p, len),
2407 : sanitizer_opts, code, value);
2408 :
2409 6 : const char *suffix;
2410 6 : if (code == OPT_fsanitize_recover_)
2411 : suffix = "-recover";
2412 5 : else if (code == OPT_fsanitize_trap_)
2413 : suffix = "-trap";
2414 : else
2415 5 : suffix = "";
2416 :
2417 6 : if (hint)
2418 4 : error_at (loc,
2419 : "unrecognized argument to %<-f%ssanitize%s=%> "
2420 : "option: %q.*s; did you mean %qs?",
2421 : value ? "" : "no-",
2422 : suffix, (int) len, p, hint);
2423 : else
2424 3 : error_at (loc,
2425 : "unrecognized argument to %<-f%ssanitize%s=%> option: "
2426 : "%q.*s", value ? "" : "no-",
2427 : suffix, (int) len, p);
2428 : }
2429 :
2430 20253 : if (comma == NULL)
2431 : break;
2432 935 : p = comma + 1;
2433 : }
2434 19318 : return flags;
2435 : }
2436 :
2437 : /* Parse string values of no_sanitize attribute passed in VALUE.
2438 : Values are separated with comma. */
2439 :
2440 : sanitize_code_type
2441 280 : parse_no_sanitize_attribute (char *value)
2442 : {
2443 280 : sanitize_code_type flags = 0;
2444 280 : unsigned int i;
2445 280 : char *q = strtok (value, ",");
2446 :
2447 1070 : while (q != NULL)
2448 : {
2449 6155 : for (i = 0; sanitizer_opts[i].name != NULL; ++i)
2450 6135 : if (strcmp (sanitizer_opts[i].name, q) == 0)
2451 : {
2452 490 : flags |= sanitizer_opts[i].flag;
2453 490 : if (sanitizer_opts[i].flag == SANITIZE_UNDEFINED)
2454 57 : flags |= SANITIZE_UNDEFINED_NONDEFAULT;
2455 : break;
2456 : }
2457 :
2458 510 : if (sanitizer_opts[i].name == NULL)
2459 20 : warning (OPT_Wattributes,
2460 : "%qs attribute directive ignored", q);
2461 :
2462 510 : q = strtok (NULL, ",");
2463 : }
2464 :
2465 280 : return flags;
2466 : }
2467 :
2468 : /* Parse -fzero-call-used-regs suboptions from ARG, return the FLAGS. */
2469 :
2470 : unsigned int
2471 78 : parse_zero_call_used_regs_options (const char *arg)
2472 : {
2473 78 : unsigned int flags = 0;
2474 :
2475 : /* Check to see if the string matches a sub-option name. */
2476 468 : for (unsigned int i = 0; zero_call_used_regs_opts[i].name != NULL; ++i)
2477 468 : if (strcmp (arg, zero_call_used_regs_opts[i].name) == 0)
2478 : {
2479 78 : flags = zero_call_used_regs_opts[i].flag;
2480 78 : break;
2481 : }
2482 :
2483 78 : if (!flags)
2484 0 : error ("unrecognized argument to %<-fzero-call-used-regs=%>: %qs", arg);
2485 :
2486 78 : return flags;
2487 : }
2488 :
2489 : /* Parse -falign-NAME format for a FLAG value. Return individual
2490 : parsed integer values into RESULT_VALUES array. If REPORT_ERROR is
2491 : set, print error message at LOC location. */
2492 :
2493 : bool
2494 371434 : parse_and_check_align_values (const char *flag,
2495 : const char *name,
2496 : auto_vec<unsigned> &result_values,
2497 : bool report_error,
2498 : location_t loc)
2499 : {
2500 371434 : char *str = xstrdup (flag);
2501 1238080 : for (char *p = strtok (str, ":"); p; p = strtok (NULL, ":"))
2502 : {
2503 866646 : char *end;
2504 866646 : int v = strtol (p, &end, 10);
2505 866646 : if (*end != '\0' || v < 0)
2506 : {
2507 0 : if (report_error)
2508 0 : error_at (loc, "invalid arguments for %<-falign-%s%> option: %qs",
2509 : name, flag);
2510 :
2511 0 : return false;
2512 : }
2513 :
2514 866646 : result_values.safe_push ((unsigned)v);
2515 : }
2516 :
2517 371434 : free (str);
2518 :
2519 : /* Check that we have a correct number of values. */
2520 742868 : if (result_values.is_empty () || result_values.length () > 4)
2521 : {
2522 0 : if (report_error)
2523 0 : error_at (loc, "invalid number of arguments for %<-falign-%s%> "
2524 : "option: %qs", name, flag);
2525 : return false;
2526 : }
2527 :
2528 1238079 : for (unsigned i = 0; i < result_values.length (); i++)
2529 866646 : if (result_values[i] > MAX_CODE_ALIGN_VALUE)
2530 : {
2531 1 : if (report_error)
2532 1 : error_at (loc, "%<-falign-%s%> is not between 0 and %d",
2533 : name, MAX_CODE_ALIGN_VALUE);
2534 : return false;
2535 : }
2536 :
2537 : return true;
2538 : }
2539 :
2540 : /* Check that alignment value FLAG for -falign-NAME is valid at a given
2541 : location LOC. OPT_STR points to the stored -falign-NAME=argument and
2542 : OPT_FLAG points to the associated -falign-NAME on/off flag. */
2543 :
2544 : static void
2545 20 : check_alignment_argument (location_t loc, const char *flag, const char *name,
2546 : int *opt_flag, const char **opt_str)
2547 : {
2548 20 : auto_vec<unsigned> align_result;
2549 20 : parse_and_check_align_values (flag, name, align_result, true, loc);
2550 :
2551 40 : if (align_result.length() >= 1 && align_result[0] == 0)
2552 : {
2553 0 : *opt_flag = 1;
2554 0 : *opt_str = NULL;
2555 : }
2556 20 : }
2557 :
2558 : /* Parse argument of -fpatchable-function-entry option ARG and store
2559 : corresponding values to PATCH_AREA_SIZE and PATCH_AREA_START.
2560 : If REPORT_ERROR is set to true, generate error for a problematic
2561 : option arguments. */
2562 :
2563 : void
2564 1811199 : parse_and_check_patch_area (const char *arg, bool report_error,
2565 : HOST_WIDE_INT *patch_area_size,
2566 : HOST_WIDE_INT *patch_area_start)
2567 : {
2568 1811199 : *patch_area_size = 0;
2569 1811199 : *patch_area_start = 0;
2570 :
2571 1811199 : if (arg == NULL)
2572 : return;
2573 :
2574 115 : char *patch_area_arg = xstrdup (arg);
2575 115 : char *comma = strchr (patch_area_arg, ',');
2576 115 : if (comma)
2577 : {
2578 52 : *comma = '\0';
2579 52 : *patch_area_size = integral_argument (patch_area_arg);
2580 52 : *patch_area_start = integral_argument (comma + 1);
2581 : }
2582 : else
2583 63 : *patch_area_size = integral_argument (patch_area_arg);
2584 :
2585 115 : if (*patch_area_size < 0
2586 115 : || *patch_area_size > USHRT_MAX
2587 107 : || *patch_area_start < 0
2588 107 : || *patch_area_start > USHRT_MAX
2589 99 : || *patch_area_size < *patch_area_start)
2590 16 : if (report_error)
2591 8 : error ("invalid arguments for %<-fpatchable-function-entry%>");
2592 :
2593 115 : free (patch_area_arg);
2594 : }
2595 :
2596 : /* Print options enabled by -fhardened. Keep this in sync with the manual! */
2597 :
2598 : static void
2599 1 : print_help_hardened ()
2600 : {
2601 1 : printf ("%s\n", "The following options are enabled by -fhardened:");
2602 : /* Unfortunately, I can't seem to use targetm.fortify_source_default_level
2603 : here. */
2604 1 : printf (" %s\n", "-D_FORTIFY_SOURCE=3 (or =2 for glibc < 2.35)");
2605 1 : printf (" %s\n", "-D_GLIBCXX_ASSERTIONS");
2606 1 : printf (" %s\n", "-ftrivial-auto-var-init=zero");
2607 : #ifdef HAVE_LD_PIE
2608 1 : printf (" %s %s\n", "-fPIE", "-pie");
2609 : #endif
2610 1 : if (HAVE_LD_NOW_SUPPORT)
2611 1 : printf (" %s\n", "-Wl,-z,now");
2612 1 : if (HAVE_LD_RELRO_SUPPORT)
2613 1 : printf (" %s\n", "-Wl,-z,relro");
2614 1 : printf (" %s\n", "-fstack-protector-strong");
2615 1 : printf (" %s\n", "-fstack-clash-protection");
2616 1 : printf (" %s\n", "-fcf-protection=full");
2617 1 : putchar ('\n');
2618 1 : }
2619 :
2620 : /* Print help when OPT__help_ is set. */
2621 :
2622 : void
2623 67 : print_help (struct gcc_options *opts, unsigned int lang_mask,
2624 : const char *help_option_argument)
2625 : {
2626 67 : const char *a = help_option_argument;
2627 67 : unsigned int include_flags = 0;
2628 : /* Note - by default we include undocumented options when listing
2629 : specific classes. If you only want to see documented options
2630 : then add ",^undocumented" to the --help= option. E.g.:
2631 :
2632 : --help=target,^undocumented */
2633 67 : unsigned int exclude_flags = 0;
2634 :
2635 67 : if (lang_mask == CL_DRIVER)
2636 0 : return;
2637 :
2638 : /* Walk along the argument string, parsing each word in turn.
2639 : The format is:
2640 : arg = [^]{word}[,{arg}]
2641 : word = {optimizers|target|warnings|undocumented|
2642 : params|common|<language>} */
2643 77 : while (*a != 0)
2644 : {
2645 77 : static const struct
2646 : {
2647 : const char *string;
2648 : unsigned int flag;
2649 : }
2650 : specifics[] =
2651 : {
2652 : { "optimizers", CL_OPTIMIZATION },
2653 : { "target", CL_TARGET },
2654 : { "warnings", CL_WARNING },
2655 : { "undocumented", CL_UNDOCUMENTED },
2656 : { "params", CL_PARAMS },
2657 : { "joined", CL_JOINED },
2658 : { "separate", CL_SEPARATE },
2659 : { "common", CL_COMMON },
2660 : { NULL, 0 }
2661 : };
2662 77 : unsigned int *pflags;
2663 77 : const char *comma;
2664 77 : unsigned int lang_flag, specific_flag;
2665 77 : unsigned int len;
2666 77 : unsigned int i;
2667 :
2668 77 : if (*a == '^')
2669 : {
2670 8 : ++a;
2671 8 : if (*a == '\0')
2672 : {
2673 1 : error ("missing argument to %qs", "--help=^");
2674 1 : break;
2675 : }
2676 7 : pflags = &exclude_flags;
2677 : }
2678 : else
2679 69 : pflags = &include_flags;
2680 :
2681 76 : comma = strchr (a, ',');
2682 76 : if (comma == NULL)
2683 66 : len = strlen (a);
2684 : else
2685 10 : len = comma - a;
2686 76 : if (len == 0)
2687 : {
2688 0 : a = comma + 1;
2689 0 : continue;
2690 : }
2691 :
2692 : /* Check to see if the string matches an option class name. */
2693 399 : for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++)
2694 386 : if (strncasecmp (a, specifics[i].string, len) == 0)
2695 : {
2696 63 : specific_flag = specifics[i].flag;
2697 63 : break;
2698 : }
2699 :
2700 : /* Check to see if the string matches a language name.
2701 : Note - we rely upon the alpha-sorted nature of the entries in
2702 : the lang_names array, specifically that shorter names appear
2703 : before their longer variants. (i.e. C before C++). That way
2704 : when we are attempting to match --help=c for example we will
2705 : match with C first and not C++. */
2706 1173 : for (i = 0, lang_flag = 0; i < cl_lang_count; i++)
2707 1111 : if (strncasecmp (a, lang_names[i], len) == 0)
2708 : {
2709 14 : lang_flag = 1U << i;
2710 14 : break;
2711 : }
2712 :
2713 76 : if (specific_flag != 0)
2714 : {
2715 63 : if (lang_flag == 0)
2716 61 : *pflags |= specific_flag;
2717 : else
2718 : {
2719 : /* The option's argument matches both the start of a
2720 : language name and the start of an option class name.
2721 : We have a special case for when the user has
2722 : specified "--help=c", but otherwise we have to issue
2723 : a warning. */
2724 2 : if (strncasecmp (a, "c", len) == 0)
2725 2 : *pflags |= lang_flag;
2726 : else
2727 0 : warning (0,
2728 : "%<--help%> argument %q.*s is ambiguous, "
2729 : "please be more specific",
2730 : len, a);
2731 : }
2732 : }
2733 13 : else if (lang_flag != 0)
2734 12 : *pflags |= lang_flag;
2735 1 : else if (strncasecmp (a, "hardened", len) == 0)
2736 1 : print_help_hardened ();
2737 : else
2738 0 : warning (0,
2739 : "unrecognized argument to %<--help=%> option: %q.*s",
2740 : len, a);
2741 :
2742 76 : if (comma == NULL)
2743 : break;
2744 10 : a = comma + 1;
2745 : }
2746 :
2747 : /* We started using PerFunction/Optimization for parameters and
2748 : a warning. We should exclude these from optimization options. */
2749 67 : if (include_flags & CL_OPTIMIZATION)
2750 7 : exclude_flags |= CL_WARNING;
2751 67 : if (!(include_flags & CL_PARAMS))
2752 44 : exclude_flags |= CL_PARAMS;
2753 :
2754 67 : if (include_flags)
2755 63 : print_specific_help (include_flags, exclude_flags, 0, opts,
2756 : lang_mask);
2757 : }
2758 :
2759 : /* Handle target- and language-independent options. Return zero to
2760 : generate an "unknown option" message. Only options that need
2761 : extra handling need to be listed here; if you simply want
2762 : DECODED->value assigned to a variable, it happens automatically. */
2763 :
2764 : bool
2765 83080122 : common_handle_option (struct gcc_options *opts,
2766 : struct gcc_options *opts_set,
2767 : const struct cl_decoded_option *decoded,
2768 : unsigned int lang_mask, int kind ATTRIBUTE_UNUSED,
2769 : location_t loc,
2770 : const struct cl_option_handlers *handlers,
2771 : diagnostics::context *dc,
2772 : void (*target_option_override_hook) (void))
2773 : {
2774 83080122 : size_t scode = decoded->opt_index;
2775 83080122 : const char *arg = decoded->arg;
2776 83080122 : HOST_WIDE_INT value = decoded->value;
2777 83080122 : enum opt_code code = (enum opt_code) scode;
2778 :
2779 83080122 : gcc_assert (decoded->canonical_option_num_elements <= 2);
2780 :
2781 83080122 : switch (code)
2782 : {
2783 7 : case OPT__help:
2784 7 : {
2785 7 : unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
2786 7 : unsigned int undoc_mask;
2787 7 : unsigned int i;
2788 :
2789 7 : if (lang_mask == CL_DRIVER)
2790 : break;
2791 :
2792 0 : undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings)
2793 3 : ? 0
2794 : : CL_UNDOCUMENTED);
2795 3 : target_option_override_hook ();
2796 : /* First display any single language specific options. */
2797 54 : for (i = 0; i < cl_lang_count; i++)
2798 48 : print_specific_help
2799 48 : (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0, opts,
2800 : lang_mask);
2801 : /* Next display any multi language specific options. */
2802 3 : print_specific_help (0, undoc_mask, all_langs_mask, opts, lang_mask);
2803 : /* Then display any remaining, non-language options. */
2804 24 : for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1)
2805 18 : if (i != CL_DRIVER)
2806 15 : print_specific_help (i, undoc_mask, 0, opts, lang_mask);
2807 3 : opts->x_exit_after_options = true;
2808 3 : break;
2809 : }
2810 :
2811 0 : case OPT__target_help:
2812 0 : if (lang_mask == CL_DRIVER)
2813 : break;
2814 :
2815 0 : target_option_override_hook ();
2816 0 : print_specific_help (CL_TARGET, 0, 0, opts, lang_mask);
2817 0 : opts->x_exit_after_options = true;
2818 0 : break;
2819 :
2820 134 : case OPT__help_:
2821 134 : {
2822 134 : help_option_arguments.safe_push (arg);
2823 134 : opts->x_exit_after_options = true;
2824 134 : break;
2825 : }
2826 :
2827 78 : case OPT__version:
2828 78 : if (lang_mask == CL_DRIVER)
2829 : break;
2830 :
2831 0 : opts->x_exit_after_options = true;
2832 0 : break;
2833 :
2834 : case OPT__completion_:
2835 : break;
2836 :
2837 18046 : case OPT_fsanitize_:
2838 18046 : opts_set->x_flag_sanitize = true;
2839 18046 : opts->x_flag_sanitize
2840 18046 : = parse_sanitizer_options (arg, loc, code,
2841 : opts->x_flag_sanitize, value, true);
2842 :
2843 : /* Kernel ASan implies normal ASan but does not yet support
2844 : all features. */
2845 18046 : if (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS)
2846 : {
2847 372 : SET_OPTION_IF_UNSET (opts, opts_set,
2848 : param_asan_instrumentation_with_call_threshold,
2849 : 0);
2850 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_globals, 0);
2851 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_stack, 0);
2852 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_protect_allocas, 0);
2853 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_use_after_return, 0);
2854 : }
2855 18046 : if (opts->x_flag_sanitize & SANITIZE_KERNEL_HWADDRESS)
2856 : {
2857 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2858 : param_hwasan_instrument_stack, 0);
2859 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2860 : param_hwasan_random_frame_tag, 0);
2861 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2862 : param_hwasan_instrument_allocas, 0);
2863 : }
2864 : break;
2865 :
2866 1070 : case OPT_fsanitize_recover_:
2867 1070 : opts->x_flag_sanitize_recover
2868 1070 : = parse_sanitizer_options (arg, loc, code,
2869 : opts->x_flag_sanitize_recover, value, true);
2870 1070 : break;
2871 :
2872 202 : case OPT_fsanitize_trap_:
2873 202 : opts->x_flag_sanitize_trap
2874 202 : = parse_sanitizer_options (arg, loc, code,
2875 : opts->x_flag_sanitize_trap, value, true);
2876 202 : break;
2877 :
2878 : case OPT_fasan_shadow_offset_:
2879 : /* Deferred. */
2880 : break;
2881 :
2882 68 : case OPT_fsanitize_address_use_after_scope:
2883 68 : opts->x_flag_sanitize_address_use_after_scope = value;
2884 68 : break;
2885 :
2886 6 : case OPT_fsanitize_recover:
2887 6 : if (value)
2888 0 : opts->x_flag_sanitize_recover
2889 0 : |= (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT)
2890 : & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN);
2891 : else
2892 6 : opts->x_flag_sanitize_recover
2893 6 : &= ~(SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2894 : break;
2895 :
2896 238 : case OPT_fsanitize_trap:
2897 238 : if (value)
2898 238 : opts->x_flag_sanitize_trap
2899 238 : |= (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2900 : else
2901 0 : opts->x_flag_sanitize_trap
2902 0 : &= ~(SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2903 : break;
2904 :
2905 : case OPT_O:
2906 : case OPT_Os:
2907 : case OPT_Ofast:
2908 : case OPT_Og:
2909 : case OPT_Oz:
2910 : /* Currently handled in a prescan. */
2911 : break;
2912 :
2913 100 : case OPT_Wattributes_:
2914 100 : if (lang_mask == CL_DRIVER)
2915 : break;
2916 :
2917 100 : if (value)
2918 : {
2919 0 : error_at (loc, "arguments ignored for %<-Wattributes=%>; use "
2920 : "%<-Wno-attributes=%> instead");
2921 0 : break;
2922 : }
2923 100 : else if (arg[strlen (arg) - 1] == ',')
2924 : {
2925 0 : error_at (loc, "trailing %<,%> in arguments for "
2926 : "%<-Wno-attributes=%>");
2927 0 : break;
2928 : }
2929 :
2930 100 : add_comma_separated_to_vector (&opts->x_flag_ignored_attributes, arg);
2931 100 : break;
2932 :
2933 4403 : case OPT_Werror:
2934 4403 : dc->set_warning_as_error_requested (value);
2935 4403 : break;
2936 :
2937 7069 : case OPT_Werror_:
2938 7069 : if (lang_mask == CL_DRIVER)
2939 : break;
2940 :
2941 7069 : enable_warning_as_error (arg, value, lang_mask, handlers,
2942 : opts, opts_set, loc, dc);
2943 7069 : break;
2944 :
2945 8 : case OPT_Wfatal_errors:
2946 8 : dc->set_fatal_errors (value);
2947 8 : break;
2948 :
2949 12 : case OPT_Wstack_usage_:
2950 12 : opts->x_flag_stack_usage_info = value != -1;
2951 12 : break;
2952 :
2953 57 : case OPT_Wstrict_aliasing:
2954 57 : set_Wstrict_aliasing (opts, value);
2955 57 : break;
2956 :
2957 37 : case OPT_Wsystem_headers:
2958 37 : dc->m_warn_system_headers = value;
2959 37 : break;
2960 :
2961 0 : case OPT_aux_info:
2962 0 : opts->x_flag_gen_aux_info = 1;
2963 0 : break;
2964 :
2965 1704 : case OPT_d:
2966 1704 : decode_d_option (arg, opts, loc, dc);
2967 1704 : break;
2968 :
2969 : case OPT_fcall_used_:
2970 : case OPT_fcall_saved_:
2971 : /* Deferred. */
2972 : break;
2973 :
2974 : case OPT_fdbg_cnt_:
2975 : /* Deferred. */
2976 : break;
2977 :
2978 : case OPT_fdebug_prefix_map_:
2979 : case OPT_ffile_prefix_map_:
2980 : case OPT_fprofile_prefix_map_:
2981 : /* Deferred. */
2982 : break;
2983 :
2984 0 : case OPT_fcanon_prefix_map:
2985 0 : flag_canon_prefix_map = value;
2986 0 : break;
2987 :
2988 1 : case OPT_fcallgraph_info:
2989 1 : opts->x_flag_callgraph_info = CALLGRAPH_INFO_NAKED;
2990 1 : break;
2991 :
2992 0 : case OPT_fcallgraph_info_:
2993 0 : {
2994 0 : char *my_arg, *p;
2995 0 : my_arg = xstrdup (arg);
2996 0 : p = strtok (my_arg, ",");
2997 0 : while (p)
2998 : {
2999 0 : if (strcmp (p, "su") == 0)
3000 : {
3001 0 : opts->x_flag_callgraph_info |= CALLGRAPH_INFO_STACK_USAGE;
3002 0 : opts->x_flag_stack_usage_info = true;
3003 : }
3004 0 : else if (strcmp (p, "da") == 0)
3005 0 : opts->x_flag_callgraph_info |= CALLGRAPH_INFO_DYNAMIC_ALLOC;
3006 : else
3007 : return 0;
3008 0 : p = strtok (NULL, ",");
3009 : }
3010 0 : free (my_arg);
3011 : }
3012 0 : break;
3013 :
3014 432 : case OPT_fdiagnostics_show_location_:
3015 432 : dc->set_prefixing_rule ((diagnostic_prefixing_rule_t) value);
3016 432 : break;
3017 :
3018 275140 : case OPT_fdiagnostics_show_caret:
3019 275140 : dc->get_source_printing_options ().enabled = value;
3020 275140 : break;
3021 :
3022 275140 : case OPT_fdiagnostics_show_event_links:
3023 275140 : dc->get_source_printing_options ().show_event_links_p = value;
3024 275140 : break;
3025 :
3026 1 : case OPT_fdiagnostics_show_labels:
3027 1 : dc->get_source_printing_options ().show_labels_p = value;
3028 1 : break;
3029 :
3030 275140 : case OPT_fdiagnostics_show_line_numbers:
3031 275140 : dc->get_source_printing_options ().show_line_numbers_p = value;
3032 275140 : break;
3033 :
3034 550926 : case OPT_fdiagnostics_color_:
3035 550926 : diagnostic_color_init (dc, value);
3036 550926 : break;
3037 :
3038 542721 : case OPT_fdiagnostics_urls_:
3039 542721 : diagnostic_urls_init (dc, value);
3040 542721 : break;
3041 :
3042 90 : case OPT_fdiagnostics_format_:
3043 90 : {
3044 90 : const char *basename = get_diagnostic_file_output_basename (*opts);
3045 90 : gcc_assert (dc);
3046 90 : diagnostics::output_format_init (*dc,
3047 : opts->x_main_input_filename, basename,
3048 : (enum diagnostics_output_format)value,
3049 90 : opts->x_flag_diagnostics_json_formatting);
3050 90 : break;
3051 : }
3052 :
3053 36 : case OPT_fdiagnostics_add_output_:
3054 36 : handle_OPT_fdiagnostics_add_output_ (*opts, *dc, arg, loc);
3055 36 : break;
3056 :
3057 14 : case OPT_fdiagnostics_set_output_:
3058 14 : handle_OPT_fdiagnostics_set_output_ (*opts, *dc, arg, loc);
3059 14 : break;
3060 :
3061 605781 : case OPT_fdiagnostics_text_art_charset_:
3062 605781 : dc->set_text_art_charset ((enum diagnostic_text_art_charset)value);
3063 605781 : break;
3064 :
3065 4 : case OPT_fdiagnostics_parseable_fixits:
3066 4 : dc->set_extra_output_kind (value
3067 : ? EXTRA_DIAGNOSTIC_OUTPUT_fixits_v1
3068 : : EXTRA_DIAGNOSTIC_OUTPUT_none);
3069 4 : break;
3070 :
3071 28 : case OPT_fdiagnostics_column_unit_:
3072 28 : dc->get_column_options ().m_column_unit
3073 28 : = (enum diagnostics_column_unit)value;
3074 28 : break;
3075 :
3076 12 : case OPT_fdiagnostics_column_origin_:
3077 12 : dc->get_column_options ().m_column_origin = value;
3078 12 : break;
3079 :
3080 4 : case OPT_fdiagnostics_escape_format_:
3081 4 : dc->set_escape_format ((enum diagnostics_escape_format)value);
3082 4 : break;
3083 :
3084 5 : case OPT_fdiagnostics_show_highlight_colors:
3085 5 : dc->set_show_highlight_colors (value);
3086 5 : break;
3087 :
3088 0 : case OPT_fdiagnostics_show_cwe:
3089 0 : dc->set_show_cwe (value);
3090 0 : break;
3091 :
3092 0 : case OPT_fdiagnostics_show_rules:
3093 0 : dc->set_show_rules (value);
3094 0 : break;
3095 :
3096 306326 : case OPT_fdiagnostics_path_format_:
3097 306326 : dc->set_path_format ((enum diagnostic_path_format)value);
3098 306326 : break;
3099 :
3100 76 : case OPT_fdiagnostics_show_path_depths:
3101 76 : dc->set_show_path_depths (value);
3102 76 : break;
3103 :
3104 54 : case OPT_fdiagnostics_show_option:
3105 54 : dc->set_show_option_requested (value);
3106 54 : break;
3107 :
3108 275140 : case OPT_fdiagnostics_show_nesting:
3109 275140 : dc->set_show_nesting (value);
3110 275140 : break;
3111 :
3112 0 : case OPT_fdiagnostics_show_nesting_locations:
3113 0 : dc->set_show_nesting_locations (value);
3114 0 : break;
3115 :
3116 0 : case OPT_fdiagnostics_show_nesting_levels:
3117 0 : dc->set_show_nesting_levels (value);
3118 0 : break;
3119 :
3120 1 : case OPT_fdiagnostics_minimum_margin_width_:
3121 1 : dc->get_source_printing_options ().min_margin_width = value;
3122 1 : break;
3123 :
3124 : case OPT_fdump_:
3125 : /* Deferred. */
3126 : break;
3127 :
3128 643495 : case OPT_ffast_math:
3129 643495 : set_fast_math_flags (opts, value);
3130 643495 : break;
3131 :
3132 377 : case OPT_funsafe_math_optimizations:
3133 377 : set_unsafe_math_optimizations_flags (opts, value);
3134 377 : break;
3135 :
3136 : case OPT_ffixed_:
3137 : /* Deferred. */
3138 : break;
3139 :
3140 9 : case OPT_finline_limit_:
3141 9 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_single,
3142 : value / 2);
3143 9 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_auto,
3144 : value / 2);
3145 : break;
3146 :
3147 1 : case OPT_finstrument_functions_exclude_function_list_:
3148 1 : add_comma_separated_to_vector
3149 1 : (&opts->x_flag_instrument_functions_exclude_functions, arg);
3150 1 : break;
3151 :
3152 1 : case OPT_finstrument_functions_exclude_file_list_:
3153 1 : add_comma_separated_to_vector
3154 1 : (&opts->x_flag_instrument_functions_exclude_files, arg);
3155 1 : break;
3156 :
3157 108984 : case OPT_fmessage_length_:
3158 108984 : pp_set_line_maximum_length (dc->get_reference_printer (), value);
3159 108984 : dc->set_caret_max_width (value);
3160 108984 : break;
3161 :
3162 : case OPT_fopt_info:
3163 : case OPT_fopt_info_:
3164 : /* Deferred. */
3165 : break;
3166 :
3167 : case OPT_foffload_options_:
3168 : /* Deferred. */
3169 : break;
3170 :
3171 0 : case OPT_foffload_abi_:
3172 0 : case OPT_foffload_abi_host_opts_:
3173 : #ifdef ACCEL_COMPILER
3174 : /* Handled in the 'mkoffload's. */
3175 : #else
3176 0 : error_at (loc,
3177 : "%qs option can be specified only for offload compiler",
3178 : (code == OPT_foffload_abi_) ? "-foffload-abi"
3179 : : "-foffload-abi-host-opts");
3180 : #endif
3181 0 : break;
3182 :
3183 1 : case OPT_fpack_struct_:
3184 1 : if (value <= 0 || (value & (value - 1)) || value > 16)
3185 0 : error_at (loc,
3186 : "structure alignment must be a small power of two, not %wu",
3187 : value);
3188 : else
3189 1 : opts->x_initial_max_fld_align = value;
3190 : break;
3191 :
3192 : case OPT_fplugin_:
3193 : case OPT_fplugin_arg_:
3194 : /* Deferred. */
3195 : break;
3196 :
3197 0 : case OPT_fprofile_use_:
3198 0 : opts->x_profile_data_prefix = xstrdup (arg);
3199 0 : opts->x_flag_profile_use = true;
3200 0 : value = true;
3201 : /* No break here - do -fprofile-use processing. */
3202 : /* FALLTHRU */
3203 159 : case OPT_fprofile_use:
3204 159 : enable_fdo_optimizations (opts, opts_set, value, false);
3205 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_reorder_functions,
3206 : value);
3207 : /* Indirect call profiling should do all useful transformations
3208 : speculative devirtualization does. */
3209 159 : if (opts->x_flag_value_profile_transformations)
3210 : {
3211 159 : SET_OPTION_IF_UNSET (opts, opts_set, flag_devirtualize_speculatively,
3212 : false);
3213 159 : SET_OPTION_IF_UNSET (opts, opts_set,
3214 : flag_speculatively_call_stored_functions, false);
3215 : }
3216 : break;
3217 :
3218 0 : case OPT_fauto_profile_:
3219 0 : opts->x_auto_profile_file = xstrdup (arg);
3220 0 : opts->x_flag_auto_profile = true;
3221 0 : value = true;
3222 : /* No break here - do -fauto-profile processing. */
3223 : /* FALLTHRU */
3224 0 : case OPT_fauto_profile:
3225 0 : enable_fdo_optimizations (opts, opts_set, value, true);
3226 0 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_correction, value);
3227 : break;
3228 :
3229 2 : case OPT_fprofile_generate_:
3230 2 : opts->x_profile_data_prefix = xstrdup (arg);
3231 2 : value = true;
3232 : /* No break here - do -fprofile-generate processing. */
3233 : /* FALLTHRU */
3234 262 : case OPT_fprofile_generate:
3235 262 : SET_OPTION_IF_UNSET (opts, opts_set, profile_arc_flag, value);
3236 262 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
3237 262 : SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
3238 262 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, value);
3239 : break;
3240 :
3241 2 : case OPT_fprofile_info_section:
3242 2 : opts->x_profile_info_section = ".gcov_info";
3243 2 : break;
3244 :
3245 36 : case OPT_fpatchable_function_entry_:
3246 36 : {
3247 36 : HOST_WIDE_INT patch_area_size, patch_area_start;
3248 36 : parse_and_check_patch_area (arg, true, &patch_area_size,
3249 : &patch_area_start);
3250 : }
3251 36 : break;
3252 :
3253 : case OPT_ftree_vectorize:
3254 : /* Automatically sets -ftree-loop-vectorize and
3255 : -ftree-slp-vectorize. Nothing more to do here. */
3256 : break;
3257 78 : case OPT_fzero_call_used_regs_:
3258 78 : opts->x_flag_zero_call_used_regs
3259 78 : = parse_zero_call_used_regs_options (arg);
3260 78 : break;
3261 :
3262 13616 : case OPT_fshow_column:
3263 13616 : dc->m_show_column = value;
3264 13616 : break;
3265 :
3266 0 : case OPT_frandom_seed:
3267 : /* The real switch is -fno-random-seed. */
3268 0 : if (value)
3269 : return false;
3270 : /* Deferred. */
3271 : break;
3272 :
3273 : case OPT_frandom_seed_:
3274 : /* Deferred. */
3275 : break;
3276 :
3277 : case OPT_fsched_verbose_:
3278 : #ifdef INSN_SCHEDULING
3279 : /* Handled with Var in common.opt. */
3280 : break;
3281 : #else
3282 : return false;
3283 : #endif
3284 :
3285 1 : case OPT_fsched_stalled_insns_:
3286 1 : opts->x_flag_sched_stalled_insns = value;
3287 1 : if (opts->x_flag_sched_stalled_insns == 0)
3288 1 : opts->x_flag_sched_stalled_insns = -1;
3289 : break;
3290 :
3291 0 : case OPT_fsched_stalled_insns_dep_:
3292 0 : opts->x_flag_sched_stalled_insns_dep = value;
3293 0 : break;
3294 :
3295 67 : case OPT_fstack_check_:
3296 67 : if (!strcmp (arg, "no"))
3297 0 : opts->x_flag_stack_check = NO_STACK_CHECK;
3298 67 : else if (!strcmp (arg, "generic"))
3299 : /* This is the old stack checking method. */
3300 34 : opts->x_flag_stack_check = STACK_CHECK_BUILTIN
3301 : ? FULL_BUILTIN_STACK_CHECK
3302 : : GENERIC_STACK_CHECK;
3303 33 : else if (!strcmp (arg, "specific"))
3304 : /* This is the new stack checking method. */
3305 33 : opts->x_flag_stack_check = STACK_CHECK_BUILTIN
3306 : ? FULL_BUILTIN_STACK_CHECK
3307 : : STACK_CHECK_STATIC_BUILTIN
3308 : ? STATIC_BUILTIN_STACK_CHECK
3309 : : GENERIC_STACK_CHECK;
3310 : else
3311 0 : warning_at (loc, 0, "unknown stack check parameter %qs", arg);
3312 : break;
3313 :
3314 1 : case OPT_fstack_limit:
3315 : /* The real switch is -fno-stack-limit. */
3316 1 : if (value)
3317 : return false;
3318 : /* Deferred. */
3319 : break;
3320 :
3321 : case OPT_fstack_limit_register_:
3322 : case OPT_fstack_limit_symbol_:
3323 : /* Deferred. */
3324 : break;
3325 :
3326 558 : case OPT_fstack_usage:
3327 558 : opts->x_flag_stack_usage = value;
3328 558 : opts->x_flag_stack_usage_info = value != 0;
3329 558 : break;
3330 :
3331 129184 : case OPT_g:
3332 129184 : set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set,
3333 : loc);
3334 129184 : break;
3335 :
3336 0 : case OPT_gcodeview:
3337 0 : set_debug_level (CODEVIEW_DEBUG, false, arg, opts, opts_set, loc);
3338 0 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3339 0 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3340 : break;
3341 :
3342 144 : case OPT_gbtf:
3343 144 : set_debug_level (BTF_DEBUG, false, arg, opts, opts_set, loc);
3344 : /* set the debug level to level 2, but if already at level 3,
3345 : don't lower it. */
3346 144 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3347 144 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3348 : break;
3349 :
3350 499 : case OPT_gctf:
3351 499 : set_debug_level (CTF_DEBUG, false, arg, opts, opts_set, loc);
3352 : /* CTF generation feeds off DWARF dies. For optimal CTF, switch debug
3353 : info level to 2. If off or at level 1, set it to level 2, but if
3354 : already at level 3, don't lower it. */
3355 499 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL
3356 493 : && opts->x_ctf_debug_info_level > CTFINFO_LEVEL_NONE)
3357 491 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3358 : break;
3359 :
3360 237 : case OPT_gdwarf:
3361 237 : if (arg && strlen (arg) != 0)
3362 : {
3363 0 : error_at (loc, "%<-gdwarf%s%> is ambiguous; "
3364 : "use %<-gdwarf-%s%> for DWARF version "
3365 : "or %<-gdwarf%> %<-g%s%> for debug level", arg, arg, arg);
3366 0 : break;
3367 : }
3368 : else
3369 237 : value = opts->x_dwarf_version;
3370 :
3371 : /* FALLTHRU */
3372 4753 : case OPT_gdwarf_:
3373 4753 : if (value < 2 || value > 5)
3374 0 : error_at (loc, "dwarf version %wu is not supported", value);
3375 : else
3376 4753 : opts->x_dwarf_version = value;
3377 4753 : set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc);
3378 4753 : break;
3379 :
3380 20 : case OPT_ggdb:
3381 20 : set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc);
3382 20 : break;
3383 :
3384 0 : case OPT_gvms:
3385 0 : set_debug_level (VMS_DEBUG, false, arg, opts, opts_set, loc);
3386 0 : break;
3387 :
3388 : case OPT_gz:
3389 : case OPT_gz_:
3390 : /* Handled completely via specs. */
3391 : break;
3392 :
3393 67786 : case OPT_pedantic_errors:
3394 67786 : dc->m_pedantic_errors = 1;
3395 67786 : control_warning_option (OPT_Wpedantic,
3396 : static_cast<int> (diagnostics::kind::error),
3397 : NULL, value,
3398 : loc, lang_mask,
3399 : handlers, opts, opts_set,
3400 : dc);
3401 67786 : break;
3402 :
3403 25039 : case OPT_flto:
3404 25039 : opts->x_flag_lto = value ? "" : NULL;
3405 25039 : break;
3406 :
3407 17 : case OPT_flto_:
3408 17 : if (strcmp (arg, "none") != 0
3409 17 : && strcmp (arg, "jobserver") != 0
3410 17 : && strcmp (arg, "auto") != 0
3411 5 : && atoi (arg) == 0)
3412 1 : error_at (loc,
3413 : "unrecognized argument to %<-flto=%> option: %qs", arg);
3414 : break;
3415 :
3416 44785 : case OPT_w:
3417 44785 : dc->m_inhibit_warnings = true;
3418 44785 : break;
3419 :
3420 44 : case OPT_fmax_errors_:
3421 44 : dc->set_max_errors (value);
3422 44 : break;
3423 :
3424 : case OPT_fuse_ld_bfd:
3425 : case OPT_fuse_ld_gold:
3426 : case OPT_fuse_ld_lld:
3427 : case OPT_fuse_ld_mold:
3428 : case OPT_fuse_ld_wild:
3429 : case OPT_fuse_linker_plugin:
3430 : /* No-op. Used by the driver and passed to us because it starts with f.*/
3431 : break;
3432 :
3433 532 : case OPT_fwrapv:
3434 532 : if (value)
3435 526 : opts->x_flag_trapv = 0;
3436 : break;
3437 :
3438 140 : case OPT_ftrapv:
3439 140 : if (value)
3440 140 : opts->x_flag_wrapv = 0;
3441 : break;
3442 :
3443 194 : case OPT_fstrict_overflow:
3444 194 : opts->x_flag_wrapv = !value;
3445 194 : opts->x_flag_wrapv_pointer = !value;
3446 194 : if (!value)
3447 64 : opts->x_flag_trapv = 0;
3448 : break;
3449 :
3450 642530 : case OPT_fipa_icf:
3451 642530 : opts->x_flag_ipa_icf_functions = value;
3452 642530 : opts->x_flag_ipa_icf_variables = value;
3453 642530 : break;
3454 :
3455 2 : case OPT_falign_loops_:
3456 2 : check_alignment_argument (loc, arg, "loops",
3457 : &opts->x_flag_align_loops,
3458 : &opts->x_str_align_loops);
3459 2 : break;
3460 :
3461 2 : case OPT_falign_jumps_:
3462 2 : check_alignment_argument (loc, arg, "jumps",
3463 : &opts->x_flag_align_jumps,
3464 : &opts->x_str_align_jumps);
3465 2 : break;
3466 :
3467 3 : case OPT_falign_labels_:
3468 3 : check_alignment_argument (loc, arg, "labels",
3469 : &opts->x_flag_align_labels,
3470 : &opts->x_str_align_labels);
3471 3 : break;
3472 :
3473 13 : case OPT_falign_functions_:
3474 13 : check_alignment_argument (loc, arg, "functions",
3475 : &opts->x_flag_align_functions,
3476 : &opts->x_str_align_functions);
3477 13 : break;
3478 :
3479 12 : case OPT_ftabstop_:
3480 : /* It is documented that we silently ignore silly values. */
3481 12 : if (value >= 1 && value <= 100)
3482 8 : dc->get_column_options ().m_tabstop = value;
3483 : break;
3484 :
3485 16 : case OPT_freport_bug:
3486 16 : dc->set_report_bug (value);
3487 16 : break;
3488 :
3489 0 : case OPT_fmultiflags:
3490 0 : gcc_checking_assert (lang_mask == CL_DRIVER);
3491 : break;
3492 :
3493 76923929 : default:
3494 : /* If the flag was handled in a standard way, assume the lack of
3495 : processing here is intentional. */
3496 76923929 : gcc_assert (option_flag_var (scode, opts));
3497 : break;
3498 : }
3499 :
3500 83080121 : common_handle_option_auto (opts, opts_set, decoded, lang_mask, kind,
3501 : loc, handlers, dc);
3502 83080121 : return true;
3503 : }
3504 :
3505 : /* Used to set the level of strict aliasing warnings in OPTS,
3506 : when no level is specified (i.e., when -Wstrict-aliasing, and not
3507 : -Wstrict-aliasing=level was given).
3508 : ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
3509 : and 0 otherwise. After calling this function, wstrict_aliasing will be
3510 : set to the default value of -Wstrict_aliasing=level, currently 3. */
3511 : static void
3512 57 : set_Wstrict_aliasing (struct gcc_options *opts, int onoff)
3513 : {
3514 57 : gcc_assert (onoff == 0 || onoff == 1);
3515 57 : if (onoff != 0)
3516 : opts->x_warn_strict_aliasing = 3;
3517 : else
3518 1 : opts->x_warn_strict_aliasing = 0;
3519 57 : }
3520 :
3521 : /* The following routines are useful in setting all the flags that
3522 : -ffast-math and -fno-fast-math imply. */
3523 : static void
3524 643495 : set_fast_math_flags (struct gcc_options *opts, int set)
3525 : {
3526 643495 : if (!opts->frontend_set_flag_unsafe_math_optimizations)
3527 : {
3528 643495 : opts->x_flag_unsafe_math_optimizations = set;
3529 643495 : set_unsafe_math_optimizations_flags (opts, set);
3530 : }
3531 643495 : if (!opts->frontend_set_flag_finite_math_only)
3532 643495 : opts->x_flag_finite_math_only = set;
3533 643495 : if (!opts->frontend_set_flag_errno_math)
3534 590846 : opts->x_flag_errno_math = !set;
3535 643495 : if (set)
3536 : {
3537 2043 : if (opts->frontend_set_flag_excess_precision == EXCESS_PRECISION_DEFAULT)
3538 2043 : opts->x_flag_excess_precision
3539 2043 : = set ? EXCESS_PRECISION_FAST : EXCESS_PRECISION_DEFAULT;
3540 2043 : if (!opts->frontend_set_flag_signaling_nans)
3541 2043 : opts->x_flag_signaling_nans = 0;
3542 2043 : if (!opts->frontend_set_flag_rounding_math)
3543 2043 : opts->x_flag_rounding_math = 0;
3544 2043 : if (!opts->frontend_set_flag_complex_method)
3545 2043 : opts->x_flag_complex_method = 0;
3546 : }
3547 643495 : }
3548 :
3549 : /* When -funsafe-math-optimizations is set the following
3550 : flags are set as well. */
3551 : static void
3552 643872 : set_unsafe_math_optimizations_flags (struct gcc_options *opts, int set)
3553 : {
3554 643872 : if (!opts->frontend_set_flag_trapping_math)
3555 643872 : opts->x_flag_trapping_math = !set;
3556 643872 : if (!opts->frontend_set_flag_signed_zeros)
3557 643872 : opts->x_flag_signed_zeros = !set;
3558 643872 : if (!opts->frontend_set_flag_associative_math)
3559 611071 : opts->x_flag_associative_math = set;
3560 643872 : if (!opts->frontend_set_flag_reciprocal_math)
3561 643872 : opts->x_flag_reciprocal_math = set;
3562 643872 : }
3563 :
3564 : /* Return true iff flags in OPTS are set as if -ffast-math. */
3565 : bool
3566 49612688 : fast_math_flags_set_p (const struct gcc_options *opts)
3567 : {
3568 49612688 : return (!opts->x_flag_trapping_math
3569 1002679 : && opts->x_flag_unsafe_math_optimizations
3570 994514 : && opts->x_flag_finite_math_only
3571 994446 : && !opts->x_flag_signed_zeros
3572 994432 : && !opts->x_flag_errno_math
3573 50607116 : && opts->x_flag_excess_precision == EXCESS_PRECISION_FAST);
3574 : }
3575 :
3576 : /* Return true iff flags are set as if -ffast-math but using the flags stored
3577 : in the struct cl_optimization structure. */
3578 : bool
3579 1276 : fast_math_flags_struct_set_p (struct cl_optimization *opt)
3580 : {
3581 1276 : return (!opt->x_flag_trapping_math
3582 43 : && opt->x_flag_unsafe_math_optimizations
3583 23 : && opt->x_flag_finite_math_only
3584 19 : && !opt->x_flag_signed_zeros
3585 1295 : && !opt->x_flag_errno_math);
3586 : }
3587 :
3588 : /* Handle a debug output -g switch for options OPTS
3589 : (OPTS_SET->x_write_symbols storing whether a debug format was passed
3590 : explicitly), location LOC. EXTENDED is true or false to support
3591 : extended output (2 is special and means "-ggdb" was given). */
3592 : static void
3593 134600 : set_debug_level (uint32_t dinfo, int extended, const char *arg,
3594 : struct gcc_options *opts, struct gcc_options *opts_set,
3595 : location_t loc)
3596 : {
3597 134600 : if (dinfo == NO_DEBUG)
3598 : {
3599 129204 : if (opts->x_write_symbols == NO_DEBUG)
3600 : {
3601 113011 : opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
3602 :
3603 113011 : if (extended == 2)
3604 : {
3605 : #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO
3606 113011 : if (opts->x_write_symbols & CTF_DEBUG)
3607 : opts->x_write_symbols |= DWARF2_DEBUG;
3608 : else
3609 113011 : opts->x_write_symbols = DWARF2_DEBUG;
3610 : #endif
3611 : }
3612 :
3613 113011 : if (opts->x_write_symbols == NO_DEBUG)
3614 : warning_at (loc, 0, "target system does not support debug output");
3615 : }
3616 16193 : else if ((opts->x_write_symbols & CTF_DEBUG)
3617 16159 : || (opts->x_write_symbols & BTF_DEBUG)
3618 16159 : || (opts->x_write_symbols & CODEVIEW_DEBUG))
3619 : {
3620 34 : opts->x_write_symbols |= DWARF2_DEBUG;
3621 34 : opts_set->x_write_symbols |= DWARF2_DEBUG;
3622 : }
3623 : }
3624 : else
3625 : {
3626 : /* Make and retain the choice if both CTF and DWARF debug info are to
3627 : be generated. */
3628 5396 : if (((dinfo == DWARF2_DEBUG) || (dinfo == CTF_DEBUG))
3629 5252 : && ((opts->x_write_symbols == (DWARF2_DEBUG|CTF_DEBUG))
3630 : || (opts->x_write_symbols == DWARF2_DEBUG)
3631 : || (opts->x_write_symbols == CTF_DEBUG)))
3632 : {
3633 124 : opts->x_write_symbols |= dinfo;
3634 124 : opts_set->x_write_symbols |= dinfo;
3635 : }
3636 : /* However, CTF and BTF are not allowed together at this time. */
3637 5272 : else if (((dinfo == DWARF2_DEBUG) || (dinfo == BTF_DEBUG))
3638 4779 : && ((opts->x_write_symbols == (DWARF2_DEBUG|BTF_DEBUG))
3639 : || (opts->x_write_symbols == DWARF2_DEBUG)
3640 : || (opts->x_write_symbols == BTF_DEBUG)))
3641 : {
3642 0 : opts->x_write_symbols |= dinfo;
3643 0 : opts_set->x_write_symbols |= dinfo;
3644 : }
3645 : else
3646 : {
3647 : /* Does it conflict with an already selected debug format? */
3648 5272 : if (opts_set->x_write_symbols != NO_DEBUG
3649 0 : && opts->x_write_symbols != NO_DEBUG
3650 0 : && dinfo != opts->x_write_symbols)
3651 : {
3652 0 : gcc_assert (debug_set_count (dinfo) <= 1);
3653 0 : error_at (loc, "debug format %qs conflicts with prior selection",
3654 0 : debug_type_names[debug_set_to_format (dinfo)]);
3655 : }
3656 5272 : opts->x_write_symbols = dinfo;
3657 5272 : opts_set->x_write_symbols = dinfo;
3658 : }
3659 : }
3660 :
3661 134600 : if (dinfo != BTF_DEBUG)
3662 : {
3663 : /* A debug flag without a level defaults to level 2.
3664 : If off or at level 1, set it to level 2, but if already
3665 : at level 3, don't lower it. */
3666 134456 : if (*arg == '\0')
3667 : {
3668 129073 : if (dinfo == CTF_DEBUG)
3669 497 : opts->x_ctf_debug_info_level = CTFINFO_LEVEL_NORMAL;
3670 128576 : else if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3671 114903 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3672 : }
3673 : else
3674 : {
3675 5383 : int argval = integral_argument (arg);
3676 5383 : if (argval == -1)
3677 0 : error_at (loc, "unrecognized debug output level %qs", arg);
3678 5383 : else if (argval > 3)
3679 0 : error_at (loc, "debug output level %qs is too high", arg);
3680 : else
3681 : {
3682 5383 : if (dinfo == CTF_DEBUG)
3683 2 : opts->x_ctf_debug_info_level
3684 2 : = (enum ctf_debug_info_levels) argval;
3685 : else
3686 5381 : opts->x_debug_info_level = (enum debug_info_levels) argval;
3687 : }
3688 : }
3689 : }
3690 144 : else if (*arg != '\0')
3691 0 : error_at (loc, "unrecognized btf debug output level %qs", arg);
3692 134600 : }
3693 :
3694 : /* Arrange to dump core on error for diagnostic context DC. (The
3695 : regular error message is still printed first, except in the case of
3696 : abort ().) */
3697 :
3698 : static void
3699 13 : setup_core_dumping (diagnostics::context *dc)
3700 : {
3701 : #ifdef SIGABRT
3702 13 : signal (SIGABRT, SIG_DFL);
3703 : #endif
3704 : #if defined(HAVE_SETRLIMIT)
3705 13 : {
3706 13 : struct rlimit rlim;
3707 13 : if (getrlimit (RLIMIT_CORE, &rlim) != 0)
3708 0 : fatal_error (input_location, "getting core file size maximum limit: %m");
3709 13 : rlim.rlim_cur = rlim.rlim_max;
3710 13 : if (setrlimit (RLIMIT_CORE, &rlim) != 0)
3711 0 : fatal_error (input_location,
3712 : "setting core file size limit to maximum: %m");
3713 : }
3714 : #endif
3715 13 : dc->set_abort_on_error (true);
3716 13 : }
3717 :
3718 : /* Parse a -d<ARG> command line switch for OPTS, location LOC,
3719 : diagnostic context DC. */
3720 :
3721 : static void
3722 1704 : decode_d_option (const char *arg, struct gcc_options *opts,
3723 : location_t loc, diagnostics::context *dc)
3724 : {
3725 1704 : int c;
3726 :
3727 3408 : while (*arg)
3728 1704 : switch (c = *arg++)
3729 : {
3730 704 : case 'A':
3731 704 : opts->x_flag_debug_asm = 1;
3732 704 : break;
3733 123 : case 'p':
3734 123 : opts->x_flag_print_asm_name = 1;
3735 123 : break;
3736 5 : case 'P':
3737 5 : opts->x_flag_dump_rtl_in_asm = 1;
3738 5 : opts->x_flag_print_asm_name = 1;
3739 5 : break;
3740 10 : case 'x':
3741 10 : opts->x_rtl_dump_and_exit = 1;
3742 10 : break;
3743 : case 'D': /* These are handled by the preprocessor. */
3744 : case 'I':
3745 : case 'M':
3746 : case 'N':
3747 : case 'U':
3748 : break;
3749 13 : case 'H':
3750 13 : setup_core_dumping (dc);
3751 13 : break;
3752 4 : case 'a':
3753 4 : opts->x_flag_dump_all_passed = true;
3754 4 : break;
3755 :
3756 0 : default:
3757 0 : warning_at (loc, 0, "unrecognized gcc debugging option: %c", c);
3758 0 : break;
3759 : }
3760 1704 : }
3761 :
3762 : /* Enable (or disable if VALUE is 0) a warning option ARG (language
3763 : mask LANG_MASK, option handlers HANDLERS) as an error for option
3764 : structures OPTS and OPTS_SET, diagnostic context DC (possibly
3765 : NULL), location LOC. This is used by -Werror=. */
3766 :
3767 : static void
3768 7069 : enable_warning_as_error (const char *arg, int value, unsigned int lang_mask,
3769 : const struct cl_option_handlers *handlers,
3770 : struct gcc_options *opts,
3771 : struct gcc_options *opts_set,
3772 : location_t loc, diagnostics::context *dc)
3773 : {
3774 7069 : char *new_option;
3775 7069 : int option_index;
3776 :
3777 7069 : new_option = XNEWVEC (char, strlen (arg) + 2);
3778 7069 : new_option[0] = 'W';
3779 7069 : strcpy (new_option + 1, arg);
3780 7069 : option_index = find_opt (new_option, lang_mask);
3781 7069 : if (option_index == OPT_SPECIAL_unknown)
3782 : {
3783 2 : option_proposer op;
3784 2 : const char *hint = op.suggest_option (new_option);
3785 2 : if (hint)
3786 3 : error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>;"
3787 : " did you mean %<-%s%>?", value ? "" : "no-",
3788 : arg, new_option, hint);
3789 : else
3790 0 : error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>",
3791 : value ? "" : "no-", arg, new_option);
3792 2 : }
3793 7067 : else if (!(cl_options[option_index].flags & CL_WARNING))
3794 4 : error_at (loc, "%<-Werror=%s%>: %<-%s%> is not an option that "
3795 : "controls warnings", arg, new_option);
3796 : else
3797 : {
3798 1114 : const enum diagnostics::kind kind = (value
3799 7063 : ? diagnostics::kind::error
3800 : : diagnostics::kind::warning);
3801 7063 : const char *arg = NULL;
3802 :
3803 7063 : if (cl_options[option_index].flags & CL_JOINED)
3804 17 : arg = new_option + cl_options[option_index].opt_len;
3805 7063 : control_warning_option (option_index, (int) kind, arg, value,
3806 : loc, lang_mask,
3807 : handlers, opts, opts_set, dc);
3808 : }
3809 7069 : free (new_option);
3810 7069 : }
3811 :
3812 : /* Return the name of the option OPTION_INDEX which enabled a diagnostic,
3813 : originally of type ORIG_DIAG_KIND but possibly converted to DIAG_KIND by
3814 : options such as -Werror. Can return null if OPTION_ID is zero. */
3815 :
3816 : label_text
3817 1636560 : compiler_diagnostic_option_id_manager::
3818 : get_option_name (diagnostics::option_id option_id,
3819 : enum diagnostics::kind orig_diag_kind,
3820 : enum diagnostics::kind diag_kind) const
3821 : {
3822 1636560 : if (option_id.m_idx)
3823 : {
3824 : /* A warning classified as an error. */
3825 95914 : if ((orig_diag_kind == diagnostics::kind::warning
3826 95914 : || orig_diag_kind == diagnostics::kind::pedwarn)
3827 80585 : && diag_kind == diagnostics::kind::error)
3828 224 : return label_text::take
3829 224 : (concat (cl_options[OPT_Werror_].opt_text,
3830 : /* Skip over "-W". */
3831 224 : cl_options[option_id.m_idx].opt_text + 2,
3832 224 : NULL));
3833 : /* A warning with option. */
3834 : else
3835 95690 : return label_text::take
3836 95690 : (xstrdup (cl_options[option_id.m_idx].opt_text));
3837 : }
3838 : /* A warning without option classified as an error. */
3839 1540646 : else if ((orig_diag_kind == diagnostics::kind::warning
3840 1540646 : || orig_diag_kind == diagnostics::kind::pedwarn
3841 1509280 : || diag_kind == diagnostics::kind::warning)
3842 1540646 : && m_context.warning_as_error_requested_p ())
3843 102 : return label_text::borrow (cl_options[OPT_Werror].opt_text);
3844 : else
3845 1540544 : return label_text ();
3846 : }
3847 :
3848 : /* Get the page within the documentation for this option. */
3849 :
3850 : static const char *
3851 12570 : get_option_html_page (int option_index)
3852 : {
3853 12570 : const cl_option *cl_opt = &cl_options[option_index];
3854 :
3855 : #ifdef CL_Fortran
3856 12570 : if ((cl_opt->flags & CL_Fortran) != 0
3857 : /* If it is option common to both C/C++ and Fortran, it is documented
3858 : in gcc/ rather than gfortran/ docs. */
3859 90 : && (cl_opt->flags & CL_C) == 0
3860 : #ifdef CL_CXX
3861 80 : && (cl_opt->flags & CL_CXX) == 0
3862 : #endif
3863 : )
3864 80 : return "gfortran/Error-and-Warning-Options.html";
3865 : #endif
3866 :
3867 : return nullptr;
3868 : }
3869 :
3870 : /* Get the url within the documentation for this option, or NULL. */
3871 :
3872 : label_text
3873 26767 : get_option_url_suffix (int option_index, unsigned lang_mask)
3874 : {
3875 26767 : if (const char *url = get_opt_url_suffix (option_index, lang_mask))
3876 :
3877 14197 : return label_text::borrow (url);
3878 :
3879 : /* Fallback code for some options that aren't handled byt opt_url_suffixes
3880 : e.g. links below "gfortran/". */
3881 12570 : if (const char *html_page = get_option_html_page (option_index))
3882 80 : return label_text::take
3883 : (concat (html_page,
3884 : /* Expect an anchor of the form "index-Wfoo" e.g.
3885 : <a name="index-Wformat"></a>, and thus an id within
3886 : the page of "#index-Wformat". */
3887 : "#index",
3888 80 : cl_options[option_index].opt_text,
3889 80 : NULL));
3890 :
3891 12490 : return label_text ();
3892 : }
3893 :
3894 : /* Return a URL describing the option OPTION_INDEX which enabled
3895 : a diagnostic, or null. */
3896 :
3897 : label_text
3898 123 : gcc_diagnostic_option_id_manager::
3899 : get_option_url (diagnostics::option_id option_id) const
3900 : {
3901 123 : if (option_id.m_idx)
3902 : {
3903 123 : label_text url_suffix = get_option_url_suffix (option_id.m_idx,
3904 123 : m_lang_mask);
3905 123 : if (url_suffix.get ())
3906 123 : return label_text::take
3907 123 : (concat (DOCUMENTATION_ROOT_URL, url_suffix.get (), nullptr));
3908 123 : }
3909 :
3910 0 : return label_text ();
3911 : }
3912 :
3913 : /* Return a heap allocated producer with command line options. */
3914 :
3915 : char *
3916 53878 : gen_command_line_string (cl_decoded_option *options,
3917 : unsigned int options_count)
3918 : {
3919 53878 : auto_vec<const char *> switches;
3920 53878 : char *options_string, *tail;
3921 53878 : const char *p;
3922 53878 : size_t len = 0;
3923 :
3924 1878733 : for (unsigned i = 0; i < options_count; i++)
3925 1824855 : switch (options[i].opt_index)
3926 : {
3927 819449 : case OPT_o:
3928 819449 : case OPT_d:
3929 819449 : case OPT_dumpbase:
3930 819449 : case OPT_dumpbase_ext:
3931 819449 : case OPT_dumpdir:
3932 819449 : case OPT_quiet:
3933 819449 : case OPT_version:
3934 819449 : case OPT_v:
3935 819449 : case OPT_w:
3936 819449 : case OPT_L:
3937 819449 : case OPT_I:
3938 819449 : case OPT_SPECIAL_unknown:
3939 819449 : case OPT_SPECIAL_ignore:
3940 819449 : case OPT_SPECIAL_warn_removed:
3941 819449 : case OPT_SPECIAL_program_name:
3942 819449 : case OPT_SPECIAL_input_file:
3943 819449 : case OPT_grecord_gcc_switches:
3944 819449 : case OPT_frecord_gcc_switches:
3945 819449 : case OPT__output_pch:
3946 819449 : case OPT_fdiagnostics_show_highlight_colors:
3947 819449 : case OPT_fdiagnostics_show_location_:
3948 819449 : case OPT_fdiagnostics_show_option:
3949 819449 : case OPT_fdiagnostics_show_caret:
3950 819449 : case OPT_fdiagnostics_show_event_links:
3951 819449 : case OPT_fdiagnostics_show_labels:
3952 819449 : case OPT_fdiagnostics_show_line_numbers:
3953 819449 : case OPT_fdiagnostics_color_:
3954 819449 : case OPT_fdiagnostics_format_:
3955 819449 : case OPT_fdiagnostics_show_nesting:
3956 819449 : case OPT_fdiagnostics_show_nesting_locations:
3957 819449 : case OPT_fdiagnostics_show_nesting_levels:
3958 819449 : case OPT_fverbose_asm:
3959 819449 : case OPT____:
3960 819449 : case OPT__sysroot_:
3961 819449 : case OPT_nostdinc:
3962 819449 : case OPT_nostdinc__:
3963 819449 : case OPT_fpreprocessed:
3964 819449 : case OPT_fltrans_output_list_:
3965 819449 : case OPT_fltrans_linemap_file_:
3966 819449 : case OPT_fresolution_:
3967 819449 : case OPT_fdebug_prefix_map_:
3968 819449 : case OPT_fmacro_prefix_map_:
3969 819449 : case OPT_ffile_prefix_map_:
3970 819449 : case OPT_fprofile_prefix_map_:
3971 819449 : case OPT_fcanon_prefix_map:
3972 819449 : case OPT_fcompare_debug:
3973 819449 : case OPT_fchecking:
3974 819449 : case OPT_fchecking_:
3975 : /* Ignore these. */
3976 819449 : continue;
3977 69479 : case OPT_D:
3978 69479 : case OPT_U:
3979 69479 : if (startswith (options[i].arg, "_FORTIFY_SOURCE")
3980 69479 : && (options[i].arg[sizeof ("_FORTIFY_SOURCE") - 1] == '\0'
3981 0 : || (options[i].opt_index == OPT_D
3982 0 : && options[i].arg[sizeof ("_FORTIFY_SOURCE") - 1] == '=')))
3983 : {
3984 0 : switches.safe_push (options[i].orig_option_with_args_text);
3985 0 : len += strlen (options[i].orig_option_with_args_text) + 1;
3986 : }
3987 : /* Otherwise ignore these. */
3988 69479 : continue;
3989 0 : case OPT_flto_:
3990 0 : {
3991 0 : const char *lto_canonical = "-flto";
3992 0 : switches.safe_push (lto_canonical);
3993 0 : len += strlen (lto_canonical) + 1;
3994 0 : break;
3995 : }
3996 935927 : default:
3997 936708 : if (cl_options[options[i].opt_index].flags
3998 935927 : & CL_NO_DWARF_RECORD)
3999 781 : continue;
4000 935146 : gcc_checking_assert (options[i].canonical_option[0][0] == '-');
4001 935146 : switch (options[i].canonical_option[0][1])
4002 : {
4003 278247 : case 'M':
4004 278247 : case 'i':
4005 278247 : case 'W':
4006 278247 : continue;
4007 373954 : case 'f':
4008 373954 : if (strncmp (options[i].canonical_option[0] + 2,
4009 : "dump", 4) == 0)
4010 1824 : continue;
4011 : break;
4012 : default:
4013 : break;
4014 : }
4015 655075 : switches.safe_push (options[i].orig_option_with_args_text);
4016 655075 : len += strlen (options[i].orig_option_with_args_text) + 1;
4017 655075 : break;
4018 888928 : }
4019 :
4020 53878 : options_string = XNEWVEC (char, len + 1);
4021 53878 : tail = options_string;
4022 :
4023 53878 : unsigned i;
4024 762831 : FOR_EACH_VEC_ELT (switches, i, p)
4025 : {
4026 655075 : len = strlen (p);
4027 655075 : memcpy (tail, p, len);
4028 655075 : tail += len;
4029 655075 : if (i != switches.length () - 1)
4030 : {
4031 601197 : *tail = ' ';
4032 601197 : ++tail;
4033 : }
4034 : }
4035 :
4036 53878 : *tail = '\0';
4037 53878 : return options_string;
4038 53878 : }
4039 :
4040 : /* Return a heap allocated producer string including command line options. */
4041 :
4042 : char *
4043 53867 : gen_producer_string (const char *language_string, cl_decoded_option *options,
4044 : unsigned int options_count)
4045 : {
4046 53867 : char *cmdline = gen_command_line_string (options, options_count);
4047 53867 : char *combined = concat (language_string, " ", version_string, " ",
4048 : cmdline, NULL);
4049 53867 : free (cmdline);
4050 53867 : return combined;
4051 : }
4052 :
4053 : #if CHECKING_P
4054 :
4055 : namespace selftest {
4056 :
4057 : /* Verify that get_option_url_suffix works as expected. */
4058 :
4059 : static void
4060 4 : test_get_option_url_suffix ()
4061 : {
4062 4 : ASSERT_STREQ (get_option_url_suffix (OPT_Wcpp, 0).get (),
4063 : "gcc/Warning-Options.html#index-Wcpp");
4064 4 : ASSERT_STREQ (get_option_url_suffix (OPT_Wanalyzer_double_free, 0).get (),
4065 : "gcc/Static-Analyzer-Options.html#index-Wanalyzer-double-free");
4066 :
4067 : /* Test of a D-specific option. */
4068 : #ifdef CL_D
4069 4 : ASSERT_EQ (get_option_url_suffix (OPT_fbounds_check_, 0).get (), nullptr);
4070 4 : ASSERT_STREQ (get_option_url_suffix (OPT_fbounds_check_, CL_D).get (),
4071 : "gdc/Runtime-Options.html#index-fbounds-check");
4072 :
4073 : /* Test of a D-specific override to an option URL. */
4074 : /* Generic URL. */
4075 4 : ASSERT_STREQ (get_option_url_suffix (OPT_fmax_errors_, 0).get (),
4076 : "gcc/Warning-Options.html#index-fmax-errors");
4077 : /* D-specific URL. */
4078 4 : ASSERT_STREQ (get_option_url_suffix (OPT_fmax_errors_, CL_D).get (),
4079 : "gdc/Warnings.html#index-fmax-errors");
4080 : #endif
4081 :
4082 : #ifdef CL_Fortran
4083 4 : ASSERT_STREQ
4084 : (get_option_url_suffix (OPT_Wline_truncation, CL_Fortran).get (),
4085 : "gfortran/Error-and-Warning-Options.html#index-Wline-truncation");
4086 : #endif
4087 4 : }
4088 :
4089 : /* Verify EnumSet and EnumBitSet requirements. */
4090 :
4091 : static void
4092 4 : test_enum_sets ()
4093 : {
4094 10392 : for (unsigned i = 0; i < cl_options_count; ++i)
4095 10388 : if (cl_options[i].var_type == CLVC_ENUM
4096 368 : && cl_options[i].var_value != CLEV_NORMAL)
4097 : {
4098 32 : const struct cl_enum *e = &cl_enums[cl_options[i].var_enum];
4099 32 : unsigned HOST_WIDE_INT used_sets = 0;
4100 32 : unsigned HOST_WIDE_INT mask = 0;
4101 32 : unsigned highest_set = 0;
4102 180 : for (unsigned j = 0; e->values[j].arg; ++j)
4103 : {
4104 148 : unsigned set = e->values[j].flags >> CL_ENUM_SET_SHIFT;
4105 148 : if (cl_options[i].var_value == CLEV_BITSET)
4106 : {
4107 : /* For EnumBitSet Set shouldn't be used and Value should
4108 : be a power of two. */
4109 28 : ASSERT_TRUE (set == 0);
4110 56 : ASSERT_TRUE (pow2p_hwi (e->values[j].value));
4111 28 : continue;
4112 28 : }
4113 : /* Test that enumerators referenced in EnumSet have all
4114 : Set(n) on them within the valid range. */
4115 120 : ASSERT_TRUE (set >= 1 && set <= HOST_BITS_PER_WIDE_INT);
4116 120 : highest_set = MAX (set, highest_set);
4117 120 : used_sets |= HOST_WIDE_INT_1U << (set - 1);
4118 : }
4119 32 : if (cl_options[i].var_value == CLEV_BITSET)
4120 8 : continue;
4121 : /* If there is just one set, no point to using EnumSet. */
4122 24 : ASSERT_TRUE (highest_set >= 2);
4123 : /* Test that there are no gaps in between the sets. */
4124 24 : if (highest_set == HOST_BITS_PER_WIDE_INT)
4125 0 : ASSERT_TRUE (used_sets == HOST_WIDE_INT_M1U);
4126 : else
4127 24 : ASSERT_TRUE (used_sets == (HOST_WIDE_INT_1U << highest_set) - 1);
4128 112 : for (unsigned int j = 1; j <= highest_set; ++j)
4129 : {
4130 : unsigned HOST_WIDE_INT this_mask = 0;
4131 616 : for (unsigned k = 0; e->values[k].arg; ++k)
4132 : {
4133 528 : unsigned set = e->values[j].flags >> CL_ENUM_SET_SHIFT;
4134 528 : if (set == j)
4135 128 : this_mask |= e->values[j].value;
4136 : }
4137 88 : ASSERT_TRUE ((mask & this_mask) == 0);
4138 88 : mask |= this_mask;
4139 : }
4140 : }
4141 4 : }
4142 :
4143 : /* Run all of the selftests within this file. */
4144 :
4145 : void
4146 4 : opts_cc_tests ()
4147 : {
4148 4 : test_get_option_url_suffix ();
4149 4 : test_enum_sets ();
4150 4 : }
4151 :
4152 : } // namespace selftest
4153 :
4154 : #endif /* #if CHECKING_P */
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