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 106142 : btf_debuginfo_p ()
148 : {
149 106142 : return (write_symbols & BTF_DEBUG);
150 : }
151 :
152 : /* Return TRUE iff BTF with CO-RE debug info is enabled. */
153 :
154 : bool
155 180 : btf_with_core_debuginfo_p ()
156 : {
157 180 : return (write_symbols & BTF_WITH_CORE_DEBUG);
158 : }
159 :
160 : /* Return TRUE iff CTF debug info is enabled. */
161 :
162 : bool
163 311 : ctf_debuginfo_p ()
164 : {
165 311 : return (write_symbols & CTF_DEBUG);
166 : }
167 :
168 : /* Return TRUE iff CodeView debug info is enabled. */
169 :
170 : bool
171 317 : codeview_debuginfo_p ()
172 : {
173 317 : return (write_symbols & CODEVIEW_DEBUG);
174 : }
175 :
176 : /* Return TRUE iff dwarf2 debug info is enabled. */
177 :
178 : bool
179 44508552 : dwarf_debuginfo_p (struct gcc_options *opts)
180 : {
181 44508552 : 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 4859822 : bool dwarf_based_debuginfo_p ()
188 : {
189 4859822 : return ((write_symbols & CTF_DEBUG)
190 4858657 : || (write_symbols & BTF_DEBUG)
191 9718221 : || (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 1472 : strip_off_ending (char *name, int len)
302 : {
303 1472 : int i;
304 1618 : for (i = 2; i < 5 && len > i; i++)
305 : {
306 1618 : if (name[len - i] == '.')
307 : {
308 1472 : name[len - i] = '\0';
309 1472 : break;
310 : }
311 : }
312 1472 : }
313 :
314 : /* Find the base name of a path, stripping off both directories and
315 : a single final extension. */
316 : int
317 285835 : base_of_path (const char *path, const char **base_out)
318 : {
319 285835 : const char *base = path;
320 285835 : const char *dot = 0;
321 285835 : const char *p = path;
322 285835 : char c = *p;
323 22160897 : while (c)
324 : {
325 21875062 : if (IS_DIR_SEPARATOR (c))
326 : {
327 2489238 : base = p + 1;
328 2489238 : dot = 0;
329 : }
330 19385824 : else if (c == '.')
331 501366 : dot = p;
332 21875062 : c = *++p;
333 : }
334 285835 : if (!dot)
335 421 : dot = p;
336 285835 : *base_out = base;
337 285835 : 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 1264994 : 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 1264994 : gcc_assert (dc == global_dc);
376 1264994 : gcc_assert (static_cast<diagnostics::kind> (kind)
377 : == diagnostics::kind::unspecified);
378 1264994 : 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 592040 : init_opts_obstack (void)
430 : {
431 592040 : gcc_obstack_init (&opts_obstack);
432 592040 : }
433 :
434 : /* Initialize OPTS and OPTS_SET before using them in parsing options. */
435 :
436 : void
437 48269611 : 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 48269611 : gcc_assert (opts_obstack.chunk_size > 0);
442 :
443 48269611 : *opts = global_options_init;
444 :
445 48269611 : if (opts_set)
446 579707 : memset (opts_set, 0, sizeof (*opts_set));
447 :
448 : /* Initialize whether `char' is signed. */
449 48269611 : 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 48269611 : opts->x_target_flags = targetm_common.default_target_flags;
454 :
455 : /* Some targets have ABI-specified unwind tables. */
456 48269611 : opts->x_flag_unwind_tables = targetm_common.unwind_tables_default;
457 :
458 : /* Languages not explicitly specifying a default get fortran rules. */
459 48269611 : opts->x_flag_complex_method = 1;
460 :
461 : /* Some targets have other target-specific initialization. */
462 48269611 : targetm_common.option_init_struct (opts);
463 48269611 : }
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 76201686 : 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 76201686 : const struct cl_option *option = &cl_options[default_opt->opt_index];
481 76201686 : bool enabled;
482 :
483 76201686 : if (size)
484 1867030 : gcc_assert (level == 2);
485 76201686 : if (fast)
486 75625 : gcc_assert (level == 3);
487 76201686 : if (debug)
488 92323 : gcc_assert (level == 1);
489 :
490 76201686 : 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 18892980 : case OPT_LEVELS_1_PLUS:
501 18892980 : enabled = (level >= 1);
502 18892980 : break;
503 :
504 0 : case OPT_LEVELS_1_PLUS_SPEED_ONLY:
505 0 : enabled = (level >= 1 && !size && !debug);
506 : break;
507 :
508 8186958 : case OPT_LEVELS_1_PLUS_NOT_DEBUG:
509 8186958 : enabled = (level >= 1 && !debug);
510 8186958 : break;
511 :
512 26450172 : case OPT_LEVELS_2_PLUS:
513 26450172 : enabled = (level >= 2);
514 26450172 : break;
515 :
516 7557192 : case OPT_LEVELS_2_PLUS_SPEED_ONLY:
517 7557192 : enabled = (level >= 2 && !size && !debug);
518 : break;
519 :
520 11335788 : case OPT_LEVELS_3_PLUS:
521 11335788 : enabled = (level >= 3);
522 11335788 : 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 1889298 : case OPT_LEVELS_FAST:
533 1889298 : enabled = fast;
534 1889298 : break;
535 :
536 0 : case OPT_LEVELS_NONE:
537 0 : default:
538 0 : gcc_unreachable ();
539 : }
540 :
541 66755196 : if (enabled)
542 51025833 : handle_generated_option (opts, opts_set, default_opt->opt_index,
543 51025833 : default_opt->arg, default_opt->value,
544 : lang_mask,
545 : static_cast<int> (diagnostics::kind::unspecified),
546 : loc,
547 : handlers, true, dc);
548 25175853 : else if (default_opt->arg == NULL
549 25175853 : && !option->cl_reject_negative
550 23986920 : && !(option->flags & CL_PARAMS))
551 20983675 : handle_generated_option (opts, opts_set, default_opt->opt_index,
552 20983675 : default_opt->arg, !default_opt->value,
553 : lang_mask,
554 : static_cast<int> (diagnostics::kind::unspecified),
555 : loc,
556 : handlers, true, dc);
557 76201686 : }
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 1259532 : 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 1259532 : size_t i;
575 :
576 77461218 : for (i = 0; default_opts[i].levels != OPT_LEVELS_NONE; i++)
577 76201686 : maybe_default_option (opts, opts_set, &default_opts[i],
578 : level, size, fast, debug,
579 : lang_mask, handlers, loc, dc);
580 1259532 : }
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_fsplit_paths, NULL, 1 },
711 : { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribution, NULL, 1 },
712 : { OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 },
713 : { OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 },
714 : { OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC },
715 : { OPT_LEVELS_3_PLUS, OPT_fversion_loops_for_strides, NULL, 1 },
716 :
717 : /* -O3 parameters. */
718 : { OPT_LEVELS_3_PLUS, OPT__param_max_inline_insns_auto_, NULL, 30 },
719 : { OPT_LEVELS_3_PLUS, OPT__param_early_inlining_insns_, NULL, 14 },
720 : { OPT_LEVELS_3_PLUS, OPT__param_inline_heuristics_hint_percent_, NULL, 600 },
721 : { OPT_LEVELS_3_PLUS, OPT__param_inline_min_speedup_, NULL, 15 },
722 : { OPT_LEVELS_3_PLUS, OPT__param_max_inline_insns_single_, NULL, 200 },
723 :
724 : /* -Ofast adds optimizations to -O3. */
725 : { OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 },
726 : { OPT_LEVELS_FAST, OPT_fallow_store_data_races, NULL, 1 },
727 : { OPT_LEVELS_FAST, OPT_fsemantic_interposition, NULL, 0 },
728 :
729 : { OPT_LEVELS_NONE, 0, NULL, 0 }
730 : };
731 :
732 : /* Default the options in OPTS and OPTS_SET based on the optimization
733 : settings in DECODED_OPTIONS and DECODED_OPTIONS_COUNT. */
734 : void
735 629766 : default_options_optimization (struct gcc_options *opts,
736 : struct gcc_options *opts_set,
737 : struct cl_decoded_option *decoded_options,
738 : unsigned int decoded_options_count,
739 : location_t loc,
740 : unsigned int lang_mask,
741 : const struct cl_option_handlers *handlers,
742 : diagnostics::context *dc)
743 : {
744 629766 : unsigned int i;
745 629766 : int opt2;
746 629766 : bool openacc_mode = false;
747 :
748 : /* Scan to see what optimization level has been specified. That will
749 : determine the default value of many flags. */
750 10646069 : for (i = 1; i < decoded_options_count; i++)
751 : {
752 10016303 : struct cl_decoded_option *opt = &decoded_options[i];
753 10016303 : switch (opt->opt_index)
754 : {
755 566700 : case OPT_O:
756 566700 : if (*opt->arg == '\0')
757 : {
758 14355 : opts->x_optimize = 1;
759 14355 : opts->x_optimize_size = 0;
760 14355 : opts->x_optimize_fast = 0;
761 14355 : opts->x_optimize_debug = 0;
762 : }
763 : else
764 : {
765 552345 : const int optimize_val = integral_argument (opt->arg);
766 552345 : if (optimize_val == -1)
767 0 : error_at (loc, "argument to %<-O%> should be a non-negative "
768 : "integer, %<g%>, %<s%>, %<z%> or %<fast%>");
769 : else
770 : {
771 552345 : opts->x_optimize = optimize_val;
772 552345 : if ((unsigned int) opts->x_optimize > 255)
773 3 : opts->x_optimize = 255;
774 552345 : opts->x_optimize_size = 0;
775 552345 : opts->x_optimize_fast = 0;
776 552345 : opts->x_optimize_debug = 0;
777 : }
778 : }
779 : break;
780 :
781 15568 : case OPT_Os:
782 15568 : opts->x_optimize_size = 1;
783 :
784 : /* Optimizing for size forces optimize to be 2. */
785 15568 : opts->x_optimize = 2;
786 15568 : opts->x_optimize_fast = 0;
787 15568 : opts->x_optimize_debug = 0;
788 15568 : break;
789 :
790 20 : case OPT_Oz:
791 20 : opts->x_optimize_size = 2;
792 :
793 : /* Optimizing for size forces optimize to be 2. */
794 20 : opts->x_optimize = 2;
795 20 : opts->x_optimize_fast = 0;
796 20 : opts->x_optimize_debug = 0;
797 20 : break;
798 :
799 712 : case OPT_Ofast:
800 : /* -Ofast only adds flags to -O3. */
801 712 : opts->x_optimize_size = 0;
802 712 : opts->x_optimize = 3;
803 712 : opts->x_optimize_fast = 1;
804 712 : opts->x_optimize_debug = 0;
805 712 : break;
806 :
807 787 : case OPT_Og:
808 : /* -Og selects optimization level 1. */
809 787 : opts->x_optimize_size = 0;
810 787 : opts->x_optimize = 1;
811 787 : opts->x_optimize_fast = 0;
812 787 : opts->x_optimize_debug = 1;
813 787 : break;
814 :
815 23494 : case OPT_fopenacc:
816 23494 : if (opt->value)
817 10016303 : openacc_mode = true;
818 : break;
819 :
820 : default:
821 : /* Ignore other options in this prescan. */
822 : break;
823 : }
824 : }
825 :
826 629766 : maybe_default_options (opts, opts_set, default_options_table,
827 629766 : opts->x_optimize, opts->x_optimize_size,
828 629766 : opts->x_optimize_fast, opts->x_optimize_debug,
829 : lang_mask, handlers, loc, dc);
830 :
831 : /* -O2 param settings. */
832 629766 : opt2 = (opts->x_optimize >= 2);
833 :
834 629766 : if (openacc_mode)
835 3286 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_pta, true);
836 :
837 : /* Track fields in field-sensitive alias analysis. */
838 629766 : if (opt2)
839 490410 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_fields_for_field_sensitive,
840 : 100);
841 :
842 629766 : if (opts->x_optimize_size)
843 : /* We want to crossjump as much as possible. */
844 15430 : SET_OPTION_IF_UNSET (opts, opts_set, param_min_crossjump_insns, 1);
845 :
846 : /* Restrict the amount of work combine does at -Og while retaining
847 : most of its useful transforms. */
848 629766 : if (opts->x_optimize_debug)
849 763 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_combine_insns, 2);
850 :
851 : /* Allow default optimizations to be specified on a per-machine basis. */
852 629766 : maybe_default_options (opts, opts_set,
853 : targetm_common.option_optimization_table,
854 : opts->x_optimize, opts->x_optimize_size,
855 629766 : opts->x_optimize_fast, opts->x_optimize_debug,
856 : lang_mask, handlers, loc, dc);
857 629766 : }
858 :
859 : /* Control IPA optimizations based on different live patching LEVEL. */
860 : static void
861 20 : control_options_for_live_patching (struct gcc_options *opts,
862 : struct gcc_options *opts_set,
863 : enum live_patching_level level,
864 : location_t loc)
865 : {
866 20 : gcc_assert (level > LIVE_PATCHING_NONE);
867 :
868 20 : switch (level)
869 : {
870 3 : case LIVE_PATCHING_INLINE_ONLY_STATIC:
871 : #define LIVE_PATCHING_OPTION "-flive-patching=inline-only-static"
872 3 : if (opts_set->x_flag_ipa_cp_clone && opts->x_flag_ipa_cp_clone)
873 0 : error_at (loc, "%qs is incompatible with %qs",
874 : "-fipa-cp-clone", LIVE_PATCHING_OPTION);
875 : else
876 3 : opts->x_flag_ipa_cp_clone = 0;
877 :
878 3 : if (opts_set->x_flag_ipa_sra && opts->x_flag_ipa_sra)
879 0 : error_at (loc, "%qs is incompatible with %qs",
880 : "-fipa-sra", LIVE_PATCHING_OPTION);
881 : else
882 3 : opts->x_flag_ipa_sra = 0;
883 :
884 3 : if (opts_set->x_flag_partial_inlining && opts->x_flag_partial_inlining)
885 0 : error_at (loc, "%qs is incompatible with %qs",
886 : "-fpartial-inlining", LIVE_PATCHING_OPTION);
887 : else
888 3 : opts->x_flag_partial_inlining = 0;
889 :
890 3 : if (opts_set->x_flag_ipa_cp && opts->x_flag_ipa_cp)
891 0 : error_at (loc, "%qs is incompatible with %qs",
892 : "-fipa-cp", LIVE_PATCHING_OPTION);
893 : else
894 3 : opts->x_flag_ipa_cp = 0;
895 :
896 : /* FALLTHROUGH. */
897 20 : case LIVE_PATCHING_INLINE_CLONE:
898 : #undef LIVE_PATCHING_OPTION
899 : #define LIVE_PATCHING_OPTION "-flive-patching=inline-only-static|inline-clone"
900 : /* live patching should disable whole-program optimization. */
901 20 : if (opts_set->x_flag_whole_program && opts->x_flag_whole_program)
902 1 : error_at (loc, "%qs is incompatible with %qs",
903 : "-fwhole-program", LIVE_PATCHING_OPTION);
904 : else
905 19 : opts->x_flag_whole_program = 0;
906 :
907 : /* visibility change should be excluded by !flag_whole_program
908 : && !in_lto_p && !flag_ipa_cp_clone && !flag_ipa_sra
909 : && !flag_partial_inlining. */
910 :
911 20 : if (opts_set->x_flag_ipa_pta && opts->x_flag_ipa_pta)
912 0 : error_at (loc, "%qs is incompatible with %qs",
913 : "-fipa-pta", LIVE_PATCHING_OPTION);
914 : else
915 20 : opts->x_flag_ipa_pta = 0;
916 :
917 20 : if (opts_set->x_flag_ipa_reference && opts->x_flag_ipa_reference)
918 0 : error_at (loc, "%qs is incompatible with %qs",
919 : "-fipa-reference", LIVE_PATCHING_OPTION);
920 : else
921 20 : opts->x_flag_ipa_reference = 0;
922 :
923 20 : if (opts_set->x_flag_ipa_ra && opts->x_flag_ipa_ra)
924 0 : error_at (loc, "%qs is incompatible with %qs",
925 : "-fipa-ra", LIVE_PATCHING_OPTION);
926 : else
927 20 : opts->x_flag_ipa_ra = 0;
928 :
929 20 : if (opts_set->x_flag_ipa_icf && opts->x_flag_ipa_icf)
930 0 : error_at (loc, "%qs is incompatible with %qs",
931 : "-fipa-icf", LIVE_PATCHING_OPTION);
932 : else
933 20 : opts->x_flag_ipa_icf = 0;
934 :
935 20 : if (opts_set->x_flag_ipa_icf_functions && opts->x_flag_ipa_icf_functions)
936 0 : error_at (loc, "%qs is incompatible with %qs",
937 : "-fipa-icf-functions", LIVE_PATCHING_OPTION);
938 : else
939 20 : opts->x_flag_ipa_icf_functions = 0;
940 :
941 20 : if (opts_set->x_flag_ipa_icf_variables && opts->x_flag_ipa_icf_variables)
942 0 : error_at (loc, "%qs is incompatible with %qs",
943 : "-fipa-icf-variables", LIVE_PATCHING_OPTION);
944 : else
945 20 : opts->x_flag_ipa_icf_variables = 0;
946 :
947 20 : if (opts_set->x_flag_ipa_bit_cp && opts->x_flag_ipa_bit_cp)
948 0 : error_at (loc, "%qs is incompatible with %qs",
949 : "-fipa-bit-cp", LIVE_PATCHING_OPTION);
950 : else
951 20 : opts->x_flag_ipa_bit_cp = 0;
952 :
953 20 : if (opts_set->x_flag_ipa_vrp && opts->x_flag_ipa_vrp)
954 0 : error_at (loc, "%qs is incompatible with %qs",
955 : "-fipa-vrp", LIVE_PATCHING_OPTION);
956 : else
957 20 : opts->x_flag_ipa_vrp = 0;
958 :
959 20 : if (opts_set->x_flag_ipa_pure_const && opts->x_flag_ipa_pure_const)
960 0 : error_at (loc, "%qs is incompatible with %qs",
961 : "-fipa-pure-const", LIVE_PATCHING_OPTION);
962 : else
963 20 : opts->x_flag_ipa_pure_const = 0;
964 :
965 20 : if (opts_set->x_flag_ipa_modref && opts->x_flag_ipa_modref)
966 0 : error_at (loc,
967 : "%<-fipa-modref%> is incompatible with %qs",
968 : LIVE_PATCHING_OPTION);
969 : else
970 20 : opts->x_flag_ipa_modref = 0;
971 :
972 : /* FIXME: disable unreachable code removal. */
973 :
974 : /* discovery of functions/variables with no address taken. */
975 20 : if (opts_set->x_flag_ipa_reference_addressable
976 0 : && opts->x_flag_ipa_reference_addressable)
977 0 : error_at (loc, "%qs is incompatible with %qs",
978 : "-fipa-reference-addressable", LIVE_PATCHING_OPTION);
979 : else
980 20 : opts->x_flag_ipa_reference_addressable = 0;
981 :
982 : /* ipa stack alignment propagation. */
983 20 : if (opts_set->x_flag_ipa_stack_alignment
984 0 : && opts->x_flag_ipa_stack_alignment)
985 0 : error_at (loc, "%qs is incompatible with %qs",
986 : "-fipa-stack-alignment", LIVE_PATCHING_OPTION);
987 : else
988 20 : opts->x_flag_ipa_stack_alignment = 0;
989 20 : break;
990 0 : default:
991 0 : gcc_unreachable ();
992 : }
993 :
994 : #undef LIVE_PATCHING_OPTION
995 20 : }
996 :
997 : /* --help option argument if set. */
998 : vec<const char *> help_option_arguments;
999 :
1000 : /* Return the string name describing a sanitizer argument which has been
1001 : provided on the command line and has set this particular flag. */
1002 : const char *
1003 208 : find_sanitizer_argument (struct gcc_options *opts,
1004 : sanitize_code_type flags)
1005 : {
1006 706 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1007 : {
1008 : /* Need to find the sanitizer_opts element which:
1009 : a) Could have set the flags requested.
1010 : b) Has been set on the command line.
1011 :
1012 : Can have (a) without (b) if the flag requested is e.g.
1013 : SANITIZE_ADDRESS, since both -fsanitize=address and
1014 : -fsanitize=kernel-address set this flag.
1015 :
1016 : Can have (b) without (a) by requesting more than one sanitizer on the
1017 : command line. */
1018 706 : if ((sanitizer_opts[i].flag & opts->x_flag_sanitize)
1019 : != sanitizer_opts[i].flag)
1020 352 : continue;
1021 354 : if ((sanitizer_opts[i].flag & flags) != flags)
1022 146 : continue;
1023 : return sanitizer_opts[i].name;
1024 : }
1025 : return NULL;
1026 : }
1027 :
1028 :
1029 : /* Report an error to the user about sanitizer options they have requested
1030 : which have set conflicting flags.
1031 :
1032 : LEFT and RIGHT indicate sanitizer flags which conflict with each other, this
1033 : function reports an error if both have been set in OPTS->x_flag_sanitize and
1034 : ensures the error identifies the requested command line options that have
1035 : set these flags. */
1036 : static void
1037 5038128 : report_conflicting_sanitizer_options (struct gcc_options *opts, location_t loc,
1038 : sanitize_code_type left,
1039 : sanitize_code_type right)
1040 : {
1041 5038128 : sanitize_code_type left_seen = (opts->x_flag_sanitize & left);
1042 5038128 : sanitize_code_type right_seen = (opts->x_flag_sanitize & right);
1043 5038128 : if (left_seen && right_seen)
1044 : {
1045 104 : const char* left_arg = find_sanitizer_argument (opts, left_seen);
1046 104 : const char* right_arg = find_sanitizer_argument (opts, right_seen);
1047 104 : gcc_assert (left_arg && right_arg);
1048 104 : error_at (loc,
1049 : "%<-fsanitize=%s%> is incompatible with %<-fsanitize=%s%>",
1050 : left_arg, right_arg);
1051 : }
1052 5038128 : }
1053 :
1054 : /* Validate from OPTS and OPTS_SET that when -fipa-reorder-for-locality is
1055 : enabled no explicit -flto-partition is also passed as the locality cloning
1056 : pass uses its own partitioning scheme. */
1057 :
1058 : static void
1059 629766 : validate_ipa_reorder_locality_lto_partition (struct gcc_options *opts,
1060 : struct gcc_options *opts_set)
1061 : {
1062 629766 : static bool validated_p = false;
1063 :
1064 629766 : if (opts_set->x_flag_lto_partition)
1065 : {
1066 15233 : if (opts->x_flag_ipa_reorder_for_locality && !validated_p)
1067 0 : error ("%<-fipa-reorder-for-locality%> is incompatible with"
1068 : " an explicit %qs option", "-flto-partition");
1069 : }
1070 629766 : validated_p = true;
1071 629766 : }
1072 :
1073 : /* If OPTS.x_dump_base_name doesn't contain any directory separators
1074 : and has not had OPTS.x_dump_dir_name prepended to it, generate
1075 : a new string in opts_obstack that has the dump_dir_name prepended to
1076 : the dump_base_name. */
1077 :
1078 : const char *
1079 283066 : maybe_prepend_dump_dir_name (const gcc_options &opts)
1080 : {
1081 283066 : const char *sep = opts.x_dump_base_name;
1082 :
1083 3828487 : for (; *sep; sep++)
1084 3565630 : if (IS_DIR_SEPARATOR (*sep))
1085 : break;
1086 :
1087 283066 : if (*sep)
1088 : {
1089 : /* If dump_base_name contains subdirectories, don't prepend
1090 : anything. */
1091 : return nullptr;
1092 : }
1093 :
1094 262857 : if (opts.x_dump_dir_name)
1095 : {
1096 : /* We have a DUMP_DIR_NAME, prepend that. */
1097 105896 : return opts_concat (opts.x_dump_dir_name,
1098 105896 : opts.x_dump_base_name, NULL);
1099 : }
1100 :
1101 : return nullptr;
1102 : }
1103 :
1104 : /* After all options at LOC have been read into OPTS and OPTS_SET,
1105 : finalize settings of those options and diagnose incompatible
1106 : combinations. */
1107 : void
1108 629766 : finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
1109 : location_t loc)
1110 : {
1111 629766 : if (opts->x_dump_base_name
1112 626992 : && ! opts->x_dump_base_name_prefixed)
1113 : {
1114 565896 : if (const char *prepended_dump_base_name
1115 282948 : = maybe_prepend_dump_dir_name (*opts))
1116 105896 : opts->x_dump_base_name = prepended_dump_base_name;
1117 :
1118 : /* It is definitely prefixed now. */
1119 282948 : opts->x_dump_base_name_prefixed = true;
1120 : }
1121 :
1122 : /* Handle related options for unit-at-a-time, toplevel-reorder, and
1123 : section-anchors. */
1124 629766 : if (!opts->x_flag_unit_at_a_time)
1125 : {
1126 5 : if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
1127 0 : error_at (loc, "section anchors must be disabled when unit-at-a-time "
1128 : "is disabled");
1129 5 : opts->x_flag_section_anchors = 0;
1130 5 : if (opts->x_flag_toplevel_reorder == 1)
1131 0 : error_at (loc, "toplevel reorder must be disabled when unit-at-a-time "
1132 : "is disabled");
1133 5 : opts->x_flag_toplevel_reorder = 0;
1134 : }
1135 :
1136 : /* -fself-test depends on the state of the compiler prior to
1137 : compiling anything. Ideally it should be run on an empty source
1138 : file. However, in case we get run with actual source, assume
1139 : -fsyntax-only which will inhibit any compiler initialization
1140 : which may confuse the self tests. */
1141 629766 : if (opts->x_flag_self_test)
1142 5 : opts->x_flag_syntax_only = 1;
1143 :
1144 629766 : if (opts->x_flag_tm && opts->x_flag_non_call_exceptions)
1145 3 : sorry ("transactional memory is not supported with non-call exceptions");
1146 :
1147 : /* Unless the user has asked for section anchors, we disable toplevel
1148 : reordering at -O0 to disable transformations that might be surprising
1149 : to end users and to get -fno-toplevel-reorder tested. */
1150 629766 : if (!opts->x_optimize
1151 110615 : && opts->x_flag_toplevel_reorder == 2
1152 110395 : && !(opts->x_flag_section_anchors && opts_set->x_flag_section_anchors))
1153 : {
1154 110395 : opts->x_flag_toplevel_reorder = 0;
1155 110395 : opts->x_flag_section_anchors = 0;
1156 : }
1157 629766 : if (!opts->x_flag_toplevel_reorder)
1158 : {
1159 130190 : if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)
1160 0 : error_at (loc, "section anchors must be disabled when toplevel reorder"
1161 : " is disabled");
1162 130190 : opts->x_flag_section_anchors = 0;
1163 : }
1164 :
1165 629766 : if (opts->x_flag_hardened)
1166 : {
1167 91 : if (!opts_set->x_flag_auto_var_init)
1168 87 : opts->x_flag_auto_var_init = AUTO_INIT_ZERO;
1169 4 : else if (opts->x_flag_auto_var_init != AUTO_INIT_ZERO)
1170 4 : warning_at (loc, OPT_Whardened,
1171 : "%<-ftrivial-auto-var-init=zero%> is not enabled by "
1172 : "%<-fhardened%> because it was specified on the command "
1173 : "line");
1174 : }
1175 :
1176 629766 : if (!opts->x_flag_opts_finished)
1177 : {
1178 : /* We initialize opts->x_flag_pie to -1 so that targets can set a
1179 : default value. */
1180 285722 : if (opts->x_flag_pie == -1)
1181 : {
1182 : /* We initialize opts->x_flag_pic to -1 so that we can tell if
1183 : -fpic, -fPIC, -fno-pic or -fno-PIC is used. */
1184 265517 : if (opts->x_flag_pic == -1)
1185 256261 : opts->x_flag_pie = (opts->x_flag_hardened
1186 256261 : ? /*-fPIE*/ 2 : DEFAULT_FLAG_PIE);
1187 : else
1188 9256 : opts->x_flag_pie = 0;
1189 : }
1190 : /* If -fPIE or -fpie is used, turn on PIC. */
1191 285722 : if (opts->x_flag_pie)
1192 266 : opts->x_flag_pic = opts->x_flag_pie;
1193 285456 : else if (opts->x_flag_pic == -1)
1194 276200 : opts->x_flag_pic = 0;
1195 285722 : if (opts->x_flag_pic && !opts->x_flag_pie)
1196 9085 : opts->x_flag_shlib = 1;
1197 285722 : opts->x_flag_opts_finished = true;
1198 : }
1199 :
1200 : /* We initialize opts->x_flag_stack_protect to -1 so that targets
1201 : can set a default value. With --enable-default-ssp or -fhardened
1202 : the default is -fstack-protector-strong. */
1203 629766 : if (opts->x_flag_stack_protect == -1)
1204 : {
1205 : /* This should check FRAME_GROWS_DOWNWARD, but on some targets it's
1206 : defined in such a way that it uses flag_stack_protect which can't
1207 : be used here. Moreover, some targets like BPF don't support
1208 : -fstack-protector at all but we don't know that here. So remember
1209 : that flag_stack_protect was set at the behest of -fhardened. */
1210 284444 : if (opts->x_flag_hardened)
1211 : {
1212 87 : opts->x_flag_stack_protect = SPCT_FLAG_STRONG;
1213 87 : flag_stack_protector_set_by_fhardened_p = true;
1214 : }
1215 : else
1216 284357 : opts->x_flag_stack_protect = DEFAULT_FLAG_SSP;
1217 : }
1218 345322 : else if (opts->x_flag_hardened
1219 4 : && opts->x_flag_stack_protect != SPCT_FLAG_STRONG)
1220 4 : warning_at (UNKNOWN_LOCATION, OPT_Whardened,
1221 : "%<-fstack-protector-strong%> is not enabled by "
1222 : "%<-fhardened%> because it was specified on the command "
1223 : "line");
1224 :
1225 629766 : if (opts->x_optimize == 0)
1226 : {
1227 : /* Inlining does not work if not optimizing,
1228 : so force it not to be done. */
1229 110615 : opts->x_warn_inline = 0;
1230 110615 : opts->x_flag_no_inline = 1;
1231 : }
1232 :
1233 : /* At -O0 or -Og, turn __builtin_unreachable into a trap. */
1234 629766 : if (!opts->x_optimize || opts->x_optimize_debug)
1235 111378 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unreachable_traps, true);
1236 :
1237 : /* Pipelining of outer loops is only possible when general pipelining
1238 : capabilities are requested. */
1239 629766 : if (!opts->x_flag_sel_sched_pipelining)
1240 629714 : opts->x_flag_sel_sched_pipelining_outer_loops = 0;
1241 :
1242 629766 : if (opts->x_flag_conserve_stack)
1243 : {
1244 30 : SET_OPTION_IF_UNSET (opts, opts_set, param_large_stack_frame, 100);
1245 30 : SET_OPTION_IF_UNSET (opts, opts_set, param_stack_frame_growth, 40);
1246 : }
1247 :
1248 629766 : if (opts->x_flag_lto)
1249 : {
1250 : #ifdef ENABLE_LTO
1251 183074 : opts->x_flag_generate_lto = 1;
1252 :
1253 : /* When generating IL, do not operate in whole-program mode.
1254 : Otherwise, symbols will be privatized too early, causing link
1255 : errors later. */
1256 183074 : opts->x_flag_whole_program = 0;
1257 : #else
1258 : error_at (loc, "LTO support has not been enabled in this configuration");
1259 : #endif
1260 183074 : if (!opts->x_flag_fat_lto_objects
1261 20872 : && (!HAVE_LTO_PLUGIN
1262 20872 : || (opts_set->x_flag_use_linker_plugin
1263 19340 : && !opts->x_flag_use_linker_plugin)))
1264 : {
1265 8745 : if (opts_set->x_flag_fat_lto_objects)
1266 0 : error_at (loc, "%<-fno-fat-lto-objects%> are supported only with "
1267 : "linker plugin");
1268 8745 : opts->x_flag_fat_lto_objects = 1;
1269 : }
1270 :
1271 : /* -gsplit-dwarf isn't compatible with LTO, see PR88389. */
1272 183074 : if (opts->x_dwarf_split_debug_info)
1273 : {
1274 1 : inform (loc, "%<-gsplit-dwarf%> is not supported with LTO,"
1275 : " disabling");
1276 1 : opts->x_dwarf_split_debug_info = 0;
1277 : }
1278 : }
1279 :
1280 : /* We initialize opts->x_flag_split_stack to -1 so that targets can set a
1281 : default value if they choose based on other options. */
1282 629766 : if (opts->x_flag_split_stack == -1)
1283 284033 : opts->x_flag_split_stack = 0;
1284 345733 : else if (opts->x_flag_split_stack)
1285 : {
1286 1717 : if (!targetm_common.supports_split_stack (true, opts))
1287 : {
1288 0 : error_at (loc, "%<-fsplit-stack%> is not supported by "
1289 : "this compiler configuration");
1290 0 : opts->x_flag_split_stack = 0;
1291 : }
1292 : }
1293 :
1294 : /* If stack splitting is turned on, and the user did not explicitly
1295 : request function partitioning, turn off partitioning, as it
1296 : confuses the linker when trying to handle partitioned split-stack
1297 : code that calls a non-split-stack functions. But if partitioning
1298 : was turned on explicitly just hope for the best. */
1299 629766 : if (opts->x_flag_split_stack
1300 1717 : && opts->x_flag_reorder_blocks_and_partition)
1301 1280 : SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_blocks_and_partition, 0);
1302 :
1303 629766 : if (opts->x_flag_reorder_blocks_and_partition)
1304 489177 : SET_OPTION_IF_UNSET (opts, opts_set, flag_reorder_functions, 1);
1305 :
1306 629766 : validate_ipa_reorder_locality_lto_partition (opts, opts_set);
1307 :
1308 : /* The -gsplit-dwarf option requires -ggnu-pubnames. */
1309 629766 : if (opts->x_dwarf_split_debug_info)
1310 311 : opts->x_debug_generate_pub_sections = 2;
1311 :
1312 629766 : if ((opts->x_flag_sanitize
1313 629766 : & (SANITIZE_USER_ADDRESS | SANITIZE_KERNEL_ADDRESS)) == 0)
1314 : {
1315 626691 : if (opts->x_flag_sanitize & SANITIZE_POINTER_COMPARE)
1316 0 : error_at (loc,
1317 : "%<-fsanitize=pointer-compare%> must be combined with "
1318 : "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
1319 626691 : if (opts->x_flag_sanitize & SANITIZE_POINTER_SUBTRACT)
1320 0 : error_at (loc,
1321 : "%<-fsanitize=pointer-subtract%> must be combined with "
1322 : "%<-fsanitize=address%> or %<-fsanitize=kernel-address%>");
1323 : }
1324 :
1325 : /* Address sanitizers conflict with the thread sanitizer. */
1326 629766 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_THREAD,
1327 : SANITIZE_ADDRESS);
1328 629766 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_THREAD,
1329 : SANITIZE_HWADDRESS);
1330 : /* The leak sanitizer conflicts with the thread sanitizer. */
1331 629766 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_LEAK,
1332 : SANITIZE_THREAD);
1333 :
1334 : /* No combination of HWASAN and ASAN work together. */
1335 629766 : report_conflicting_sanitizer_options (opts, loc,
1336 : SANITIZE_HWADDRESS, SANITIZE_ADDRESS);
1337 :
1338 : /* The userspace and kernel address sanitizers conflict with each other. */
1339 629766 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_USER_HWADDRESS,
1340 : SANITIZE_KERNEL_HWADDRESS);
1341 629766 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_USER_ADDRESS,
1342 : SANITIZE_KERNEL_ADDRESS);
1343 :
1344 : /* Sanitizers using Memory-Tagging Extension conflict with HWASAN and
1345 : ASAN. */
1346 629766 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_MEMTAG,
1347 : SANITIZE_HWADDRESS);
1348 629766 : report_conflicting_sanitizer_options (opts, loc, SANITIZE_MEMTAG,
1349 : SANITIZE_ADDRESS);
1350 :
1351 : /* Memtag sanitizer implies HWASAN but with tags always generated by
1352 : the hardware randomly. */
1353 629766 : if ((opts->x_flag_sanitize & SANITIZE_MEMTAG_STACK)
1354 0 : && opts->x_param_hwasan_random_frame_tag == 0)
1355 : {
1356 0 : warning_at (loc, OPT_fsanitize_,
1357 : "%<--param hwasan-random-frame-tag=0%> is ignored when "
1358 : "%<-fsanitize=memtag-stack%> is present");
1359 0 : opts->x_param_hwasan_random_frame_tag = 1;
1360 : }
1361 :
1362 : /* Check error recovery for -fsanitize-recover option. */
1363 22041810 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1364 21412044 : if ((opts->x_flag_sanitize_recover & sanitizer_opts[i].flag)
1365 15109969 : && !sanitizer_opts[i].can_recover)
1366 40 : error_at (loc, "%<-fsanitize-recover=%s%> is not supported",
1367 : sanitizer_opts[i].name);
1368 :
1369 : /* Check -fsanitize-trap option. */
1370 22041810 : for (int i = 0; sanitizer_opts[i].name != NULL; ++i)
1371 21412044 : if ((opts->x_flag_sanitize_trap & sanitizer_opts[i].flag)
1372 4357 : && !sanitizer_opts[i].can_trap
1373 : /* Allow -fsanitize-trap=all or -fsanitize-trap=undefined
1374 : to set flag_sanitize_trap & SANITIZE_VPTR bit which will
1375 : effectively disable -fsanitize=vptr, just disallow
1376 : explicit -fsanitize-trap=vptr. */
1377 183 : && sanitizer_opts[i].flag != SANITIZE_VPTR)
1378 0 : error_at (loc, "%<-fsanitize-trap=%s%> is not supported",
1379 : sanitizer_opts[i].name);
1380 :
1381 : /* When instrumenting the pointers, we don't want to remove
1382 : the null pointer checks. */
1383 629766 : if (opts->x_flag_sanitize & (SANITIZE_NULL | SANITIZE_NONNULL_ATTRIBUTE
1384 : | SANITIZE_RETURNS_NONNULL_ATTRIBUTE))
1385 1662 : opts->x_flag_delete_null_pointer_checks = 0;
1386 :
1387 : /* Aggressive compiler optimizations may cause false negatives. */
1388 629766 : if (opts->x_flag_sanitize & ~(SANITIZE_LEAK | SANITIZE_UNREACHABLE))
1389 7407 : opts->x_flag_aggressive_loop_optimizations = 0;
1390 :
1391 : /* Enable -fsanitize-address-use-after-scope if either address sanitizer is
1392 : enabled. */
1393 629766 : if (opts->x_flag_sanitize
1394 629766 : & (SANITIZE_USER_ADDRESS | SANITIZE_USER_HWADDRESS))
1395 3289 : SET_OPTION_IF_UNSET (opts, opts_set, flag_sanitize_address_use_after_scope,
1396 : true);
1397 :
1398 : /* Force -fstack-reuse=none in case -fsanitize-address-use-after-scope
1399 : is enabled. */
1400 629766 : if (opts->x_flag_sanitize_address_use_after_scope)
1401 : {
1402 3255 : if (opts->x_flag_stack_reuse != SR_NONE
1403 3205 : && opts_set->x_flag_stack_reuse != SR_NONE)
1404 0 : error_at (loc,
1405 : "%<-fsanitize-address-use-after-scope%> requires "
1406 : "%<-fstack-reuse=none%> option");
1407 :
1408 3255 : opts->x_flag_stack_reuse = SR_NONE;
1409 : }
1410 :
1411 629766 : if ((opts->x_flag_sanitize & SANITIZE_USER_ADDRESS) && opts->x_flag_tm)
1412 0 : sorry ("transactional memory is not supported with %<-fsanitize=address%>");
1413 :
1414 629766 : if ((opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS) && opts->x_flag_tm)
1415 0 : sorry ("transactional memory is not supported with "
1416 : "%<-fsanitize=kernel-address%>");
1417 :
1418 : /* Currently live patching is not support for LTO. */
1419 629766 : if (opts->x_flag_live_patching == LIVE_PATCHING_INLINE_ONLY_STATIC && opts->x_flag_lto)
1420 1 : sorry ("live patching (with %qs) is not supported with LTO",
1421 : "inline-only-static");
1422 :
1423 : /* Currently vtable verification is not supported for LTO */
1424 629766 : if (opts->x_flag_vtable_verify && opts->x_flag_lto)
1425 0 : sorry ("vtable verification is not supported with LTO");
1426 :
1427 : /* Control IPA optimizations based on different -flive-patching level. */
1428 629766 : if (opts->x_flag_live_patching)
1429 20 : control_options_for_live_patching (opts, opts_set,
1430 : opts->x_flag_live_patching,
1431 : loc);
1432 :
1433 : /* Allow cunroll to grow size accordingly. */
1434 629766 : if (!opts_set->x_flag_cunroll_grow_size)
1435 629766 : opts->x_flag_cunroll_grow_size
1436 1259532 : = (opts->x_flag_unroll_loops
1437 154661 : || opts->x_flag_peel_loops
1438 1259532 : || opts->x_optimize >= 3);
1439 :
1440 : /* Use -fvect-cost-model=cheap instead of -fvect-cost-mode=very-cheap
1441 : by default with explicit -ftree-{loop,slp}-vectorize. */
1442 629766 : if (opts->x_optimize == 2
1443 461293 : && (opts_set->x_flag_tree_loop_vectorize
1444 461232 : || opts_set->x_flag_tree_vectorize))
1445 345958 : SET_OPTION_IF_UNSET (opts, opts_set, flag_vect_cost_model,
1446 : VECT_COST_MODEL_CHEAP);
1447 :
1448 629766 : if (opts->x_flag_gtoggle)
1449 : {
1450 : /* Make sure to process -gtoggle only once. */
1451 613 : opts->x_flag_gtoggle = false;
1452 613 : if (opts->x_debug_info_level == DINFO_LEVEL_NONE)
1453 : {
1454 366 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
1455 :
1456 366 : if (opts->x_write_symbols == NO_DEBUG)
1457 366 : opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
1458 : }
1459 : else
1460 247 : opts->x_debug_info_level = DINFO_LEVEL_NONE;
1461 : }
1462 :
1463 : /* Also enable markers with -fauto-profile even when debug info is disabled,
1464 : so we assign same discriminators and can read back the profile info. */
1465 629766 : if (!opts_set->x_debug_nonbind_markers_p)
1466 629734 : opts->x_debug_nonbind_markers_p
1467 629734 : = (opts->x_optimize
1468 519119 : && ((opts->x_debug_info_level >= DINFO_LEVEL_NORMAL
1469 51483 : && (dwarf_debuginfo_p (opts) || codeview_debuginfo_p ()))
1470 467645 : || opts->x_flag_auto_profile)
1471 1310942 : && !(opts->x_flag_selective_scheduling
1472 51474 : || opts->x_flag_selective_scheduling2));
1473 :
1474 : /* We know which debug output will be used so we can set flag_var_tracking
1475 : and flag_var_tracking_uninit if the user has not specified them. */
1476 629766 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL
1477 629766 : || (!dwarf_debuginfo_p (opts) && !codeview_debuginfo_p ())
1478 : /* We have not yet initialized debug hooks so match that to check
1479 : whether we're only doing DWARF2_LINENO_DEBUGGING_INFO. */
1480 : #ifndef DWARF2_DEBUGGING_INFO
1481 : || true
1482 : #endif
1483 : )
1484 : {
1485 571912 : if ((opts_set->x_flag_var_tracking && opts->x_flag_var_tracking == 1)
1486 571896 : || (opts_set->x_flag_var_tracking_uninit
1487 0 : && opts->x_flag_var_tracking_uninit == 1))
1488 : {
1489 16 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
1490 15 : warning_at (UNKNOWN_LOCATION, 0,
1491 : "variable tracking requested, but useless unless "
1492 : "producing debug info");
1493 : else
1494 1 : warning_at (UNKNOWN_LOCATION, 0,
1495 : "variable tracking requested, but not supported "
1496 : "by this debug format");
1497 : }
1498 571912 : opts->x_flag_var_tracking = 0;
1499 571912 : opts->x_flag_var_tracking_uninit = 0;
1500 571912 : opts->x_flag_var_tracking_assignments = 0;
1501 : }
1502 :
1503 : /* One could use EnabledBy, but it would lead to a circular dependency. */
1504 629766 : if (!opts_set->x_flag_var_tracking_uninit)
1505 629766 : opts->x_flag_var_tracking_uninit = opts->x_flag_var_tracking;
1506 :
1507 629766 : if (!opts_set->x_flag_var_tracking_assignments)
1508 629692 : opts->x_flag_var_tracking_assignments
1509 1259384 : = (opts->x_flag_var_tracking
1510 1259384 : && !(opts->x_flag_selective_scheduling
1511 51470 : || opts->x_flag_selective_scheduling2));
1512 :
1513 629766 : 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 629766 : 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 629766 : if (opts->x_flag_var_tracking_assignments
1521 51477 : && (opts->x_flag_selective_scheduling
1522 51477 : || opts->x_flag_selective_scheduling2))
1523 5 : warning_at (loc, 0,
1524 : "var-tracking-assignments changes selective scheduling");
1525 :
1526 629766 : if (opts->x_flag_syntax_only)
1527 : {
1528 282 : opts->x_write_symbols = NO_DEBUG;
1529 282 : opts->x_profile_flag = 0;
1530 : }
1531 :
1532 629766 : 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 629766 : diagnose_options (opts, opts_set, loc);
1542 629766 : }
1543 :
1544 : /* The function diagnoses incompatible combinations for provided options
1545 : (OPTS and OPTS_SET) at a given LOCation. The function is called both
1546 : when command line is parsed (after the target optimization hook) and
1547 : when an optimize/target attribute (or pragma) is used. */
1548 :
1549 915409 : void diagnose_options (gcc_options *opts, gcc_options *opts_set,
1550 : location_t loc)
1551 : {
1552 : /* The optimization to partition hot and cold basic blocks into separate
1553 : sections of the .o and executable files does not work (currently)
1554 : with exception handling. This is because there is no support for
1555 : generating unwind info. If opts->x_flag_exceptions is turned on
1556 : we need to turn off the partitioning optimization. */
1557 :
1558 915409 : enum unwind_info_type ui_except
1559 915409 : = targetm_common.except_unwind_info (opts);
1560 :
1561 915409 : if (opts->x_flag_exceptions
1562 256607 : && opts->x_flag_reorder_blocks_and_partition
1563 87048 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
1564 : {
1565 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1566 0 : inform (loc,
1567 : "%<-freorder-blocks-and-partition%> does not work "
1568 : "with exceptions on this architecture");
1569 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1570 0 : opts->x_flag_reorder_blocks = 1;
1571 : }
1572 :
1573 : /* If user requested unwind info, then turn off the partitioning
1574 : optimization. */
1575 :
1576 915409 : if (opts->x_flag_unwind_tables
1577 630642 : && !targetm_common.unwind_tables_default
1578 630642 : && opts->x_flag_reorder_blocks_and_partition
1579 487313 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))
1580 : {
1581 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1582 0 : inform (loc,
1583 : "%<-freorder-blocks-and-partition%> does not support "
1584 : "unwind info on this architecture");
1585 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1586 0 : opts->x_flag_reorder_blocks = 1;
1587 : }
1588 :
1589 : /* If the target requested unwind info, then turn off the partitioning
1590 : optimization with a different message. Likewise, if the target does not
1591 : support named sections. */
1592 :
1593 915409 : if (opts->x_flag_reorder_blocks_and_partition
1594 632325 : && (!targetm_common.have_named_sections
1595 632325 : || (opts->x_flag_unwind_tables
1596 487313 : && targetm_common.unwind_tables_default
1597 0 : && (ui_except == UI_SJLJ || ui_except >= UI_TARGET))))
1598 : {
1599 0 : if (opts_set->x_flag_reorder_blocks_and_partition)
1600 0 : inform (loc,
1601 : "%<-freorder-blocks-and-partition%> does not work "
1602 : "on this architecture");
1603 0 : opts->x_flag_reorder_blocks_and_partition = 0;
1604 0 : opts->x_flag_reorder_blocks = 1;
1605 : }
1606 :
1607 :
1608 915409 : }
1609 :
1610 : #define LEFT_COLUMN 27
1611 :
1612 : /* Output ITEM, of length ITEM_WIDTH, in the left column,
1613 : followed by word-wrapped HELP in a second column. */
1614 : static void
1615 28284 : wrap_help (const char *help,
1616 : const char *item,
1617 : unsigned int item_width,
1618 : unsigned int columns)
1619 : {
1620 28284 : unsigned int col_width = LEFT_COLUMN;
1621 28284 : unsigned int remaining, room, len;
1622 :
1623 28284 : remaining = strlen (help);
1624 :
1625 40298 : do
1626 : {
1627 40298 : room = columns - 3 - MAX (col_width, item_width);
1628 40298 : if (room > columns)
1629 0 : room = 0;
1630 40298 : len = remaining;
1631 :
1632 40298 : if (room < len)
1633 : {
1634 : unsigned int i;
1635 :
1636 539451 : for (i = 0; help[i]; i++)
1637 : {
1638 539451 : if (i >= room && len != remaining)
1639 : break;
1640 527437 : if (help[i] == ' ')
1641 : len = i;
1642 448597 : else if ((help[i] == '-' || help[i] == '/')
1643 1825 : && help[i + 1] != ' '
1644 1825 : && i > 0 && ISALPHA (help[i - 1]))
1645 527437 : len = i + 1;
1646 : }
1647 : }
1648 :
1649 40298 : printf (" %-*.*s %.*s\n", col_width, item_width, item, len, help);
1650 40298 : item_width = 0;
1651 92420 : while (help[len] == ' ')
1652 11824 : len++;
1653 40298 : help += len;
1654 40298 : remaining -= len;
1655 : }
1656 40298 : while (remaining);
1657 28284 : }
1658 :
1659 : /* Data structure used to print list of valid option values. */
1660 :
1661 : class option_help_tuple
1662 : {
1663 : public:
1664 14 : option_help_tuple (int code, vec<const char *> values):
1665 14 : m_code (code), m_values (values)
1666 : {}
1667 :
1668 : /* Code of an option. */
1669 : int m_code;
1670 :
1671 : /* List of possible values. */
1672 : vec<const char *> m_values;
1673 : };
1674 :
1675 : /* Print help for a specific front-end, etc. */
1676 : static void
1677 135 : print_filtered_help (unsigned int include_flags,
1678 : unsigned int exclude_flags,
1679 : unsigned int any_flags,
1680 : unsigned int columns,
1681 : struct gcc_options *opts,
1682 : unsigned int lang_mask)
1683 : {
1684 135 : unsigned int i;
1685 135 : const char *help;
1686 135 : bool found = false;
1687 135 : bool displayed = false;
1688 135 : char new_help[256];
1689 :
1690 135 : if (!opts->x_help_printed)
1691 70 : opts->x_help_printed = XCNEWVAR (char, cl_options_count);
1692 :
1693 135 : if (!opts->x_help_enum_printed)
1694 70 : opts->x_help_enum_printed = XCNEWVAR (char, cl_enums_count);
1695 :
1696 135 : auto_vec<option_help_tuple> help_tuples;
1697 :
1698 344790 : for (i = 0; i < cl_options_count; i++)
1699 : {
1700 344655 : const struct cl_option *option = cl_options + i;
1701 344655 : unsigned int len;
1702 344655 : const char *opt;
1703 344655 : const char *tab;
1704 :
1705 344655 : if (include_flags == 0
1706 336996 : || ((option->flags & include_flags) != include_flags))
1707 : {
1708 304035 : if ((option->flags & any_flags) == 0)
1709 300696 : continue;
1710 : }
1711 :
1712 : /* Skip unwanted switches. */
1713 43959 : if ((option->flags & exclude_flags) != 0)
1714 9865 : continue;
1715 :
1716 : /* The driver currently prints its own help text. */
1717 34094 : if ((option->flags & CL_DRIVER) != 0
1718 863 : && (option->flags & (((1U << cl_lang_count) - 1)
1719 769 : | CL_COMMON | CL_TARGET)) == 0)
1720 94 : continue;
1721 :
1722 : /* If an option contains a language specification,
1723 : exclude it from common unless all languages are present. */
1724 34000 : if ((include_flags & CL_COMMON)
1725 4816 : && !(option->flags & CL_DRIVER)
1726 4426 : && (option->flags & CL_LANG_ALL)
1727 145 : && (option->flags & CL_LANG_ALL) != CL_LANG_ALL)
1728 145 : continue;
1729 :
1730 33855 : found = true;
1731 : /* Skip switches that have already been printed. */
1732 33855 : if (opts->x_help_printed[i])
1733 5561 : continue;
1734 :
1735 28294 : opts->x_help_printed[i] = true;
1736 :
1737 28294 : help = option->help;
1738 28294 : if (help == NULL)
1739 : {
1740 1556 : if (exclude_flags & CL_UNDOCUMENTED)
1741 10 : continue;
1742 :
1743 : help = undocumented_msg;
1744 : }
1745 :
1746 : /* Get the translation. */
1747 28284 : help = _(help);
1748 :
1749 28284 : if (option->alias_target < N_OPTS
1750 1571 : && cl_options [option->alias_target].help)
1751 : {
1752 1538 : const struct cl_option *target = cl_options + option->alias_target;
1753 1538 : if (option->help == NULL)
1754 : {
1755 : /* The option is undocumented but is an alias for an option that
1756 : is documented. If the option has alias arguments, then its
1757 : purpose is to provide certain arguments to the other option, so
1758 : inform the reader of this. Otherwise, point the reader to the
1759 : other option in preference to the former. */
1760 :
1761 912 : if (option->alias_arg)
1762 : {
1763 138 : if (option->neg_alias_arg)
1764 116 : snprintf (new_help, sizeof new_help,
1765 116 : _("Same as %s%s (or, in negated form, %s%s)."),
1766 : target->opt_text, option->alias_arg,
1767 116 : target->opt_text, option->neg_alias_arg);
1768 : else
1769 22 : snprintf (new_help, sizeof new_help,
1770 22 : _("Same as %s%s."),
1771 22 : target->opt_text, option->alias_arg);
1772 : }
1773 : else
1774 774 : snprintf (new_help, sizeof new_help,
1775 774 : _("Same as %s."),
1776 774 : target->opt_text);
1777 : }
1778 : else
1779 : {
1780 : /* For documented options with aliases, mention the aliased
1781 : option's name for reference. */
1782 626 : snprintf (new_help, sizeof new_help,
1783 626 : _("%s Same as %s."),
1784 626 : help, cl_options [option->alias_target].opt_text);
1785 : }
1786 :
1787 : help = new_help;
1788 : }
1789 :
1790 28284 : if (option->warn_message)
1791 : {
1792 : /* Mention that the use of the option will trigger a warning. */
1793 50 : if (help == new_help)
1794 43 : snprintf (new_help + strlen (new_help),
1795 43 : sizeof new_help - strlen (new_help),
1796 : " %s", _(use_diagnosed_msg));
1797 : else
1798 7 : snprintf (new_help, sizeof new_help,
1799 : "%s %s", help, _(use_diagnosed_msg));
1800 :
1801 : help = new_help;
1802 : }
1803 :
1804 : /* Find the gap between the name of the
1805 : option and its descriptive text. */
1806 28284 : tab = strchr (help, '\t');
1807 28284 : if (tab)
1808 : {
1809 1634 : len = tab - help;
1810 1634 : opt = help;
1811 1634 : help = tab + 1;
1812 : }
1813 : else
1814 : {
1815 26650 : opt = option->opt_text;
1816 26650 : len = strlen (opt);
1817 : }
1818 :
1819 : /* With the -Q option enabled we change the descriptive text associated
1820 : with an option to be an indication of its current setting. */
1821 28284 : if (!opts->x_quiet_flag)
1822 : {
1823 2760 : void *flag_var = option_flag_var (i, opts);
1824 :
1825 2760 : if (len < (LEFT_COLUMN + 2))
1826 2472 : strcpy (new_help, "\t\t");
1827 : else
1828 288 : strcpy (new_help, "\t");
1829 :
1830 : /* Set to print whether the option is enabled or disabled,
1831 : or, if it's an alias for another option, the name of
1832 : the aliased option. */
1833 2760 : bool print_state = false;
1834 :
1835 2760 : if (flag_var != NULL
1836 2514 : && option->var_type != CLVC_DEFER)
1837 : {
1838 : /* If OPTION is only available for a specific subset
1839 : of languages other than this one, mention them. */
1840 2514 : bool avail_for_lang = true;
1841 2514 : if (unsigned langset = option->flags & CL_LANG_ALL)
1842 : {
1843 1528 : if (!(langset & lang_mask))
1844 : {
1845 696 : avail_for_lang = false;
1846 696 : strcat (new_help, _("[available in "));
1847 11832 : for (unsigned i = 0, n = 0; (1U << i) < CL_LANG_ALL; ++i)
1848 11136 : if (langset & (1U << i))
1849 : {
1850 1046 : if (n++)
1851 350 : strcat (new_help, ", ");
1852 1046 : strcat (new_help, lang_names[i]);
1853 : }
1854 696 : strcat (new_help, "]");
1855 : }
1856 : }
1857 696 : if (!avail_for_lang)
1858 : ; /* Print nothing else if the option is not available
1859 : in the current language. */
1860 1818 : else if (option->flags & CL_JOINED)
1861 : {
1862 159 : if (option->var_type == CLVC_STRING)
1863 : {
1864 10 : if (* (const char **) flag_var != NULL)
1865 8 : snprintf (new_help + strlen (new_help),
1866 8 : sizeof (new_help) - strlen (new_help),
1867 : "%s", * (const char **) flag_var);
1868 : }
1869 149 : else if (option->var_type == CLVC_ENUM)
1870 : {
1871 49 : const struct cl_enum *e = &cl_enums[option->var_enum];
1872 49 : int value;
1873 49 : const char *arg = NULL;
1874 :
1875 49 : value = e->get (flag_var);
1876 49 : enum_value_to_arg (e->values, &arg, value, lang_mask);
1877 49 : if (arg == NULL)
1878 10 : arg = _("[default]");
1879 49 : snprintf (new_help + strlen (new_help),
1880 49 : sizeof (new_help) - strlen (new_help),
1881 : "%s", arg);
1882 : }
1883 : else
1884 : {
1885 100 : if (option->cl_host_wide_int)
1886 24 : sprintf (new_help + strlen (new_help),
1887 24 : _("%llu bytes"), (unsigned long long)
1888 : *(unsigned HOST_WIDE_INT *) flag_var);
1889 : else
1890 76 : sprintf (new_help + strlen (new_help),
1891 : "%i", * (int *) flag_var);
1892 : }
1893 : }
1894 : else
1895 : print_state = true;
1896 : }
1897 : else
1898 : /* When there is no argument, print the option state only
1899 : if the option takes no argument. */
1900 246 : print_state = !(option->flags & CL_JOINED);
1901 :
1902 1099 : if (print_state)
1903 : {
1904 1883 : if (option->alias_target < N_OPTS
1905 : && option->alias_target != OPT_SPECIAL_warn_removed
1906 : && option->alias_target != OPT_SPECIAL_ignore
1907 : && option->alias_target != OPT_SPECIAL_input_file
1908 : && option->alias_target != OPT_SPECIAL_program_name
1909 : && option->alias_target != OPT_SPECIAL_unknown)
1910 : {
1911 162 : const struct cl_option *target
1912 162 : = &cl_options[option->alias_target];
1913 324 : sprintf (new_help + strlen (new_help), "%s%s",
1914 162 : target->opt_text,
1915 162 : option->alias_arg ? option->alias_arg : "");
1916 : }
1917 1721 : else if (option->alias_target == OPT_SPECIAL_ignore)
1918 16 : strcat (new_help, ("[ignored]"));
1919 : else
1920 : {
1921 : /* Print the state for an on/off option. */
1922 1705 : int ena = option_enabled (i, lang_mask, opts);
1923 1705 : if (ena > 0)
1924 775 : strcat (new_help, _("[enabled]"));
1925 930 : else if (ena == 0)
1926 825 : strcat (new_help, _("[disabled]"));
1927 : }
1928 : }
1929 :
1930 : help = new_help;
1931 : }
1932 :
1933 28284 : if (option->range_max != -1 && tab == NULL)
1934 : {
1935 4285 : char b[128];
1936 4285 : snprintf (b, sizeof (b), "<%d,%d>", option->range_min,
1937 : option->range_max);
1938 4285 : opt = concat (opt, b, NULL);
1939 4285 : len += strlen (b);
1940 : }
1941 :
1942 28284 : wrap_help (help, opt, len, columns);
1943 28284 : displayed = true;
1944 :
1945 28284 : if (option->var_type == CLVC_ENUM
1946 893 : && opts->x_help_enum_printed[option->var_enum] != 2)
1947 893 : opts->x_help_enum_printed[option->var_enum] = 1;
1948 : else
1949 : {
1950 27391 : vec<const char *> option_values
1951 27391 : = targetm_common.get_valid_option_values (i, NULL);
1952 27405 : if (!option_values.is_empty ())
1953 14 : help_tuples.safe_push (option_help_tuple (i, option_values));
1954 : }
1955 : }
1956 :
1957 135 : if (! found)
1958 : {
1959 9 : unsigned int langs = include_flags & CL_LANG_ALL;
1960 :
1961 9 : if (langs == 0)
1962 0 : printf (_(" No options with the desired characteristics were found\n"));
1963 : else
1964 : {
1965 : unsigned int i;
1966 :
1967 : /* PR 31349: Tell the user how to see all of the
1968 : options supported by a specific front end. */
1969 153 : for (i = 0; (1U << i) < CL_LANG_ALL; i ++)
1970 144 : if ((1U << i) & langs)
1971 9 : printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end.\n"),
1972 9 : lang_names[i], lang_names[i]);
1973 : }
1974 :
1975 : }
1976 126 : else if (! displayed)
1977 0 : printf (_(" All options with the desired characteristics have already been displayed\n"));
1978 :
1979 135 : putchar ('\n');
1980 :
1981 : /* Print details of enumerated option arguments, if those
1982 : enumerations have help text headings provided. If no help text
1983 : is provided, presume that the possible values are listed in the
1984 : help text for the relevant options. */
1985 11745 : for (i = 0; i < cl_enums_count; i++)
1986 : {
1987 11610 : unsigned int j, pos;
1988 :
1989 11610 : if (opts->x_help_enum_printed[i] != 1)
1990 9865 : continue;
1991 1745 : if (cl_enums[i].help == NULL)
1992 1647 : continue;
1993 98 : printf (" %s\n ", _(cl_enums[i].help));
1994 98 : pos = 4;
1995 455 : for (j = 0; cl_enums[i].values[j].arg != NULL; j++)
1996 : {
1997 357 : unsigned int len = strlen (cl_enums[i].values[j].arg);
1998 :
1999 357 : if (pos > 4 && pos + 1 + len <= columns)
2000 : {
2001 258 : printf (" %s", cl_enums[i].values[j].arg);
2002 258 : pos += 1 + len;
2003 : }
2004 : else
2005 : {
2006 1 : if (pos > 4)
2007 : {
2008 1 : printf ("\n ");
2009 1 : pos = 4;
2010 : }
2011 99 : printf ("%s", cl_enums[i].values[j].arg);
2012 99 : pos += len;
2013 : }
2014 : }
2015 98 : printf ("\n\n");
2016 98 : opts->x_help_enum_printed[i] = 2;
2017 : }
2018 :
2019 149 : for (unsigned i = 0; i < help_tuples.length (); i++)
2020 : {
2021 14 : const struct cl_option *option = cl_options + help_tuples[i].m_code;
2022 14 : printf (_(" Known valid arguments for %s option:\n "),
2023 14 : option->opt_text);
2024 1246 : for (unsigned j = 0; j < help_tuples[i].m_values.length (); j++)
2025 1232 : printf (" %s", help_tuples[i].m_values[j]);
2026 14 : printf ("\n\n");
2027 : }
2028 135 : }
2029 :
2030 : /* Display help for a specified type of option.
2031 : The options must have ALL of the INCLUDE_FLAGS set
2032 : ANY of the flags in the ANY_FLAGS set
2033 : and NONE of the EXCLUDE_FLAGS set. The current option state is in
2034 : OPTS; LANG_MASK is used for interpreting enumerated option state. */
2035 : static void
2036 135 : print_specific_help (unsigned int include_flags,
2037 : unsigned int exclude_flags,
2038 : unsigned int any_flags,
2039 : struct gcc_options *opts,
2040 : unsigned int lang_mask)
2041 : {
2042 135 : unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
2043 135 : const char * description = NULL;
2044 135 : const char * descrip_extra = "";
2045 135 : size_t i;
2046 135 : unsigned int flag;
2047 :
2048 : /* Sanity check: Make sure that we do not have more
2049 : languages than we have bits available to enumerate them. */
2050 135 : gcc_assert ((1U << cl_lang_count) <= CL_MIN_OPTION_CLASS);
2051 :
2052 : /* If we have not done so already, obtain
2053 : the desired maximum width of the output. */
2054 135 : if (opts->x_help_columns == 0)
2055 : {
2056 70 : opts->x_help_columns = get_terminal_width ();
2057 70 : if (opts->x_help_columns == INT_MAX)
2058 : /* Use a reasonable default. */
2059 26 : opts->x_help_columns = 80;
2060 : }
2061 :
2062 : /* Decide upon the title for the options that we are going to display. */
2063 3105 : for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++)
2064 : {
2065 2970 : switch (flag & include_flags)
2066 : {
2067 : case 0:
2068 : case CL_DRIVER:
2069 : break;
2070 :
2071 7 : case CL_TARGET:
2072 7 : description = _("The following options are target specific");
2073 7 : break;
2074 11 : case CL_WARNING:
2075 11 : description = _("The following options control compiler warning messages");
2076 11 : break;
2077 10 : case CL_OPTIMIZATION:
2078 10 : description = _("The following options control optimizations");
2079 10 : break;
2080 5 : case CL_COMMON:
2081 5 : description = _("The following options are language-independent");
2082 5 : break;
2083 32 : case CL_PARAMS:
2084 32 : description = _("The following options control parameters");
2085 32 : break;
2086 62 : default:
2087 62 : if (i >= cl_lang_count)
2088 : break;
2089 62 : if (exclude_flags & all_langs_mask)
2090 48 : description = _("The following options are specific to just the language ");
2091 : else
2092 14 : description = _("The following options are supported by the language ");
2093 62 : descrip_extra = lang_names [i];
2094 62 : break;
2095 : }
2096 : }
2097 :
2098 135 : if (description == NULL)
2099 : {
2100 9 : if (any_flags == 0)
2101 : {
2102 6 : if (include_flags & CL_UNDOCUMENTED)
2103 2 : description = _("The following options are not documented");
2104 4 : else if (include_flags & CL_SEPARATE)
2105 2 : description = _("The following options take separate arguments");
2106 2 : else if (include_flags & CL_JOINED)
2107 2 : description = _("The following options take joined arguments");
2108 : else
2109 : {
2110 0 : internal_error ("unrecognized %<include_flags 0x%x%> passed "
2111 : "to %<print_specific_help%>",
2112 : include_flags);
2113 : return;
2114 : }
2115 : }
2116 : else
2117 : {
2118 3 : if (any_flags & all_langs_mask)
2119 3 : description = _("The following options are language-related");
2120 : else
2121 0 : description = _("The following options are language-independent");
2122 : }
2123 : }
2124 :
2125 135 : printf ("%s%s:\n", description, descrip_extra);
2126 135 : print_filtered_help (include_flags, exclude_flags, any_flags,
2127 : opts->x_help_columns, opts, lang_mask);
2128 : }
2129 :
2130 : /* Enable FDO-related flags. */
2131 :
2132 : static void
2133 155 : enable_fdo_optimizations (struct gcc_options *opts,
2134 : struct gcc_options *opts_set,
2135 : int value, bool autofdo)
2136 : {
2137 155 : if (!autofdo)
2138 : {
2139 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_branch_probabilities, value);
2140 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
2141 : }
2142 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_value_profile_transformations,
2143 : value);
2144 :
2145 : /* Enable IPA optimizatins that makes effective use of profile data. */
2146 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
2147 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp, value);
2148 155 : if (value)
2149 : {
2150 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_cp_clone, 1);
2151 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, 1);
2152 : }
2153 :
2154 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_gcse_after_reload, value);
2155 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tracer, value);
2156 :
2157 : /* Loop optimizations uses profile feedback to determine their profitability
2158 : and thus it makes sense to enable them by default even at -O2.
2159 : Auto-profile, in its current form, is not very good on determining
2160 : iteration counts and thus only real profile feedback is used. */
2161 155 : if (!autofdo)
2162 : {
2163 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_loops, value);
2164 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_peel_loops, value);
2165 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_predictive_commoning, value);
2166 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_split_loops, value);
2167 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unswitch_loops, value);
2168 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_vectorize, value);
2169 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_slp_vectorize, value);
2170 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_version_loops_for_strides, value);
2171 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_vect_cost_model,
2172 : VECT_COST_MODEL_DYNAMIC);
2173 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribute_patterns,
2174 : value);
2175 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_loop_interchange, value);
2176 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_unroll_jam, value);
2177 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_tree_loop_distribution, value);
2178 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_optimize_crc, value);
2179 : }
2180 155 : }
2181 :
2182 : /* -f{,no-}sanitize{,-recover}= suboptions. */
2183 : const struct sanitizer_opts_s sanitizer_opts[] =
2184 : {
2185 : #define SANITIZER_OPT(name, flags, recover, trap) \
2186 : { #name, flags, sizeof #name - 1, recover, trap }
2187 : SANITIZER_OPT (address, (SANITIZE_ADDRESS | SANITIZE_USER_ADDRESS), true,
2188 : false),
2189 : SANITIZER_OPT (hwaddress, (SANITIZE_HWADDRESS | SANITIZE_USER_HWADDRESS),
2190 : true, false),
2191 : SANITIZER_OPT (kernel-address, (SANITIZE_ADDRESS | SANITIZE_KERNEL_ADDRESS),
2192 : true, false),
2193 : SANITIZER_OPT (kernel-hwaddress,
2194 : (SANITIZE_HWADDRESS | SANITIZE_KERNEL_HWADDRESS),
2195 : true, false),
2196 : SANITIZER_OPT (pointer-compare, SANITIZE_POINTER_COMPARE, true, false),
2197 : SANITIZER_OPT (pointer-subtract, SANITIZE_POINTER_SUBTRACT, true, false),
2198 : SANITIZER_OPT (thread, SANITIZE_THREAD, false, false),
2199 : SANITIZER_OPT (leak, SANITIZE_LEAK, false, false),
2200 : SANITIZER_OPT (shift, SANITIZE_SHIFT, true, true),
2201 : SANITIZER_OPT (shift-base, SANITIZE_SHIFT_BASE, true, true),
2202 : SANITIZER_OPT (shift-exponent, SANITIZE_SHIFT_EXPONENT, true, true),
2203 : SANITIZER_OPT (integer-divide-by-zero, SANITIZE_DIVIDE, true, true),
2204 : SANITIZER_OPT (undefined, SANITIZE_UNDEFINED, true, true),
2205 : SANITIZER_OPT (unreachable, SANITIZE_UNREACHABLE, false, true),
2206 : SANITIZER_OPT (vla-bound, SANITIZE_VLA, true, true),
2207 : SANITIZER_OPT (return, SANITIZE_RETURN, false, true),
2208 : SANITIZER_OPT (null, SANITIZE_NULL, true, true),
2209 : SANITIZER_OPT (signed-integer-overflow, SANITIZE_SI_OVERFLOW, true, true),
2210 : SANITIZER_OPT (bool, SANITIZE_BOOL, true, true),
2211 : SANITIZER_OPT (enum, SANITIZE_ENUM, true, true),
2212 : SANITIZER_OPT (float-divide-by-zero, SANITIZE_FLOAT_DIVIDE, true, true),
2213 : SANITIZER_OPT (float-cast-overflow, SANITIZE_FLOAT_CAST, true, true),
2214 : SANITIZER_OPT (bounds, SANITIZE_BOUNDS, true, true),
2215 : SANITIZER_OPT (bounds-strict, SANITIZE_BOUNDS | SANITIZE_BOUNDS_STRICT, true,
2216 : true),
2217 : SANITIZER_OPT (alignment, SANITIZE_ALIGNMENT, true, true),
2218 : SANITIZER_OPT (nonnull-attribute, SANITIZE_NONNULL_ATTRIBUTE, true, true),
2219 : SANITIZER_OPT (returns-nonnull-attribute, SANITIZE_RETURNS_NONNULL_ATTRIBUTE,
2220 : true, true),
2221 : SANITIZER_OPT (object-size, SANITIZE_OBJECT_SIZE, true, true),
2222 : SANITIZER_OPT (vptr, SANITIZE_VPTR, true, false),
2223 : SANITIZER_OPT (pointer-overflow, SANITIZE_POINTER_OVERFLOW, true, true),
2224 : SANITIZER_OPT (builtin, SANITIZE_BUILTIN, true, true),
2225 : SANITIZER_OPT (shadow-call-stack, SANITIZE_SHADOW_CALL_STACK, false, false),
2226 : SANITIZER_OPT (memtag-stack, SANITIZE_MEMTAG_STACK, false, false),
2227 : SANITIZER_OPT (all, ~sanitize_code_type (0), true, true),
2228 : #undef SANITIZER_OPT
2229 : { NULL, sanitize_code_type (0), 0UL, false, false }
2230 : };
2231 :
2232 : /* -fzero-call-used-regs= suboptions. */
2233 : const struct zero_call_used_regs_opts_s zero_call_used_regs_opts[] =
2234 : {
2235 : #define ZERO_CALL_USED_REGS_OPT(name, flags) \
2236 : { #name, flags }
2237 : ZERO_CALL_USED_REGS_OPT (skip, zero_regs_flags::SKIP),
2238 : ZERO_CALL_USED_REGS_OPT (used-gpr-arg, zero_regs_flags::USED_GPR_ARG),
2239 : ZERO_CALL_USED_REGS_OPT (used-gpr, zero_regs_flags::USED_GPR),
2240 : ZERO_CALL_USED_REGS_OPT (used-arg, zero_regs_flags::USED_ARG),
2241 : ZERO_CALL_USED_REGS_OPT (used, zero_regs_flags::USED),
2242 : ZERO_CALL_USED_REGS_OPT (all-gpr-arg, zero_regs_flags::ALL_GPR_ARG),
2243 : ZERO_CALL_USED_REGS_OPT (all-gpr, zero_regs_flags::ALL_GPR),
2244 : ZERO_CALL_USED_REGS_OPT (all-arg, zero_regs_flags::ALL_ARG),
2245 : ZERO_CALL_USED_REGS_OPT (all, zero_regs_flags::ALL),
2246 : ZERO_CALL_USED_REGS_OPT (leafy-gpr-arg, zero_regs_flags::LEAFY_GPR_ARG),
2247 : ZERO_CALL_USED_REGS_OPT (leafy-gpr, zero_regs_flags::LEAFY_GPR),
2248 : ZERO_CALL_USED_REGS_OPT (leafy-arg, zero_regs_flags::LEAFY_ARG),
2249 : ZERO_CALL_USED_REGS_OPT (leafy, zero_regs_flags::LEAFY),
2250 : #undef ZERO_CALL_USED_REGS_OPT
2251 : {NULL, 0U}
2252 : };
2253 :
2254 : /* A struct for describing a run of chars within a string. */
2255 :
2256 : class string_fragment
2257 : {
2258 : public:
2259 6 : string_fragment (const char *start, size_t len)
2260 6 : : m_start (start), m_len (len) {}
2261 :
2262 : const char *m_start;
2263 : size_t m_len;
2264 : };
2265 :
2266 : /* Specialization of edit_distance_traits for string_fragment,
2267 : for use by get_closest_sanitizer_option. */
2268 :
2269 : template <>
2270 : struct edit_distance_traits<const string_fragment &>
2271 : {
2272 6 : static size_t get_length (const string_fragment &fragment)
2273 : {
2274 6 : return fragment.m_len;
2275 : }
2276 :
2277 6 : static const char *get_string (const string_fragment &fragment)
2278 : {
2279 6 : return fragment.m_start;
2280 : }
2281 : };
2282 :
2283 : /* Given ARG, an unrecognized sanitizer option, return the best
2284 : matching sanitizer option, or NULL if there isn't one.
2285 : OPTS is array of candidate sanitizer options.
2286 : CODE is OPT_fsanitize_, OPT_fsanitize_recover_ or OPT_fsanitize_trap_.
2287 : VALUE is non-zero for the regular form of the option, zero
2288 : for the "no-" form (e.g. "-fno-sanitize-recover="). */
2289 :
2290 : static const char *
2291 6 : get_closest_sanitizer_option (const string_fragment &arg,
2292 : const struct sanitizer_opts_s *opts,
2293 : enum opt_code code, int value)
2294 : {
2295 6 : best_match <const string_fragment &, const char*> bm (arg);
2296 210 : for (int i = 0; opts[i].name != NULL; ++i)
2297 : {
2298 : /* -fsanitize=all is not valid, so don't offer it. */
2299 204 : if (code == OPT_fsanitize_
2300 170 : && opts[i].flag == ~sanitize_code_type (0)
2301 5 : && value)
2302 4 : continue;
2303 :
2304 : /* For -fsanitize-recover= (and not -fno-sanitize-recover=),
2305 : don't offer the non-recoverable options. */
2306 200 : if (code == OPT_fsanitize_recover_
2307 34 : && !opts[i].can_recover
2308 6 : && value)
2309 6 : continue;
2310 :
2311 : /* For -fsanitize-trap= (and not -fno-sanitize-trap=),
2312 : don't offer the non-trapping options. */
2313 194 : if (code == OPT_fsanitize_trap_
2314 0 : && !opts[i].can_trap
2315 0 : && value)
2316 0 : continue;
2317 :
2318 194 : bm.consider (opts[i].name);
2319 : }
2320 6 : return bm.get_best_meaningful_candidate ();
2321 : }
2322 :
2323 : /* Parse comma separated sanitizer suboptions from P for option SCODE,
2324 : adjust previous FLAGS and return new ones. If COMPLAIN is false,
2325 : don't issue diagnostics. */
2326 :
2327 : sanitize_code_type
2328 18858 : parse_sanitizer_options (const char *p, location_t loc, int scode,
2329 : sanitize_code_type flags, int value, bool complain)
2330 : {
2331 18858 : enum opt_code code = (enum opt_code) scode;
2332 :
2333 19791 : while (*p != 0)
2334 : {
2335 19791 : size_t len, i;
2336 19791 : bool found = false;
2337 19791 : const char *comma = strchr (p, ',');
2338 :
2339 19791 : if (comma == NULL)
2340 18858 : len = strlen (p);
2341 : else
2342 933 : len = comma - p;
2343 19791 : if (len == 0)
2344 : {
2345 0 : p = comma + 1;
2346 0 : continue;
2347 : }
2348 :
2349 : /* Check to see if the string matches an option class name. */
2350 184121 : for (i = 0; sanitizer_opts[i].name != NULL; ++i)
2351 184115 : if (len == sanitizer_opts[i].len
2352 28801 : && memcmp (p, sanitizer_opts[i].name, len) == 0)
2353 : {
2354 : /* Handle both -fsanitize and -fno-sanitize cases. */
2355 19785 : if (value && sanitizer_opts[i].flag == ~sanitize_code_type (0))
2356 : {
2357 42 : if (code == OPT_fsanitize_)
2358 : {
2359 3 : if (complain)
2360 3 : error_at (loc, "%<-fsanitize=all%> option is not valid");
2361 : }
2362 39 : else if (code == OPT_fsanitize_recover_)
2363 13 : flags |= ~(SANITIZE_THREAD | SANITIZE_LEAK
2364 : | SANITIZE_UNREACHABLE | SANITIZE_RETURN
2365 : | SANITIZE_SHADOW_CALL_STACK
2366 : | SANITIZE_MEMTAG_STACK);
2367 : else /* if (code == OPT_fsanitize_trap_) */
2368 26 : flags |= (SANITIZE_UNDEFINED
2369 : | SANITIZE_UNDEFINED_NONDEFAULT);
2370 : }
2371 18463 : else if (value)
2372 : {
2373 : /* Do not enable -fsanitize-recover=unreachable and
2374 : -fsanitize-recover=return if -fsanitize-recover=undefined
2375 : is selected. */
2376 18463 : if (code == OPT_fsanitize_recover_
2377 404 : && sanitizer_opts[i].flag == SANITIZE_UNDEFINED)
2378 40 : flags |= (SANITIZE_UNDEFINED
2379 : & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN));
2380 18423 : else if (code == OPT_fsanitize_trap_
2381 176 : && sanitizer_opts[i].flag == SANITIZE_VPTR)
2382 0 : error_at (loc, "%<-fsanitize-trap=%s%> is not supported",
2383 : sanitizer_opts[i].name);
2384 : else
2385 18423 : flags |= sanitizer_opts[i].flag;
2386 : }
2387 : else
2388 : {
2389 1280 : flags &= ~sanitizer_opts[i].flag;
2390 : /* Don't always clear SANITIZE_ADDRESS if it was previously
2391 : set: -fsanitize=address -fno-sanitize=kernel-address should
2392 : leave SANITIZE_ADDRESS set. */
2393 1280 : if (flags & (SANITIZE_KERNEL_ADDRESS | SANITIZE_USER_ADDRESS))
2394 754 : flags |= SANITIZE_ADDRESS;
2395 : }
2396 : found = true;
2397 : break;
2398 : }
2399 :
2400 19791 : if (! found && complain)
2401 : {
2402 6 : const char *hint
2403 6 : = get_closest_sanitizer_option (string_fragment (p, len),
2404 : sanitizer_opts, code, value);
2405 :
2406 6 : const char *suffix;
2407 6 : if (code == OPT_fsanitize_recover_)
2408 : suffix = "-recover";
2409 5 : else if (code == OPT_fsanitize_trap_)
2410 : suffix = "-trap";
2411 : else
2412 5 : suffix = "";
2413 :
2414 6 : if (hint)
2415 4 : error_at (loc,
2416 : "unrecognized argument to %<-f%ssanitize%s=%> "
2417 : "option: %q.*s; did you mean %qs?",
2418 : value ? "" : "no-",
2419 : suffix, (int) len, p, hint);
2420 : else
2421 3 : error_at (loc,
2422 : "unrecognized argument to %<-f%ssanitize%s=%> option: "
2423 : "%q.*s", value ? "" : "no-",
2424 : suffix, (int) len, p);
2425 : }
2426 :
2427 19791 : if (comma == NULL)
2428 : break;
2429 933 : p = comma + 1;
2430 : }
2431 18858 : return flags;
2432 : }
2433 :
2434 : /* Parse string values of no_sanitize attribute passed in VALUE.
2435 : Values are separated with comma. */
2436 :
2437 : sanitize_code_type
2438 280 : parse_no_sanitize_attribute (char *value)
2439 : {
2440 280 : sanitize_code_type flags = 0;
2441 280 : unsigned int i;
2442 280 : char *q = strtok (value, ",");
2443 :
2444 1070 : while (q != NULL)
2445 : {
2446 6155 : for (i = 0; sanitizer_opts[i].name != NULL; ++i)
2447 6135 : if (strcmp (sanitizer_opts[i].name, q) == 0)
2448 : {
2449 490 : flags |= sanitizer_opts[i].flag;
2450 490 : if (sanitizer_opts[i].flag == SANITIZE_UNDEFINED)
2451 57 : flags |= SANITIZE_UNDEFINED_NONDEFAULT;
2452 : break;
2453 : }
2454 :
2455 510 : if (sanitizer_opts[i].name == NULL)
2456 20 : warning (OPT_Wattributes,
2457 : "%qs attribute directive ignored", q);
2458 :
2459 510 : q = strtok (NULL, ",");
2460 : }
2461 :
2462 280 : return flags;
2463 : }
2464 :
2465 : /* Parse -fzero-call-used-regs suboptions from ARG, return the FLAGS. */
2466 :
2467 : unsigned int
2468 77 : parse_zero_call_used_regs_options (const char *arg)
2469 : {
2470 77 : unsigned int flags = 0;
2471 :
2472 : /* Check to see if the string matches a sub-option name. */
2473 459 : for (unsigned int i = 0; zero_call_used_regs_opts[i].name != NULL; ++i)
2474 459 : if (strcmp (arg, zero_call_used_regs_opts[i].name) == 0)
2475 : {
2476 77 : flags = zero_call_used_regs_opts[i].flag;
2477 77 : break;
2478 : }
2479 :
2480 77 : if (!flags)
2481 0 : error ("unrecognized argument to %<-fzero-call-used-regs=%>: %qs", arg);
2482 :
2483 77 : return flags;
2484 : }
2485 :
2486 : /* Parse -falign-NAME format for a FLAG value. Return individual
2487 : parsed integer values into RESULT_VALUES array. If REPORT_ERROR is
2488 : set, print error message at LOC location. */
2489 :
2490 : bool
2491 359298 : parse_and_check_align_values (const char *flag,
2492 : const char *name,
2493 : auto_vec<unsigned> &result_values,
2494 : bool report_error,
2495 : location_t loc)
2496 : {
2497 359298 : char *str = xstrdup (flag);
2498 1197636 : for (char *p = strtok (str, ":"); p; p = strtok (NULL, ":"))
2499 : {
2500 838338 : char *end;
2501 838338 : int v = strtol (p, &end, 10);
2502 838338 : if (*end != '\0' || v < 0)
2503 : {
2504 0 : if (report_error)
2505 0 : error_at (loc, "invalid arguments for %<-falign-%s%> option: %qs",
2506 : name, flag);
2507 :
2508 0 : return false;
2509 : }
2510 :
2511 838338 : result_values.safe_push ((unsigned)v);
2512 : }
2513 :
2514 359298 : free (str);
2515 :
2516 : /* Check that we have a correct number of values. */
2517 718596 : if (result_values.is_empty () || result_values.length () > 4)
2518 : {
2519 0 : if (report_error)
2520 0 : error_at (loc, "invalid number of arguments for %<-falign-%s%> "
2521 : "option: %qs", name, flag);
2522 0 : return false;
2523 : }
2524 :
2525 1197635 : for (unsigned i = 0; i < result_values.length (); i++)
2526 838338 : if (result_values[i] > MAX_CODE_ALIGN_VALUE)
2527 : {
2528 1 : if (report_error)
2529 1 : error_at (loc, "%<-falign-%s%> is not between 0 and %d",
2530 : name, MAX_CODE_ALIGN_VALUE);
2531 1 : return false;
2532 : }
2533 :
2534 : return true;
2535 : }
2536 :
2537 : /* Check that alignment value FLAG for -falign-NAME is valid at a given
2538 : location LOC. OPT_STR points to the stored -falign-NAME=argument and
2539 : OPT_FLAG points to the associated -falign-NAME on/off flag. */
2540 :
2541 : static void
2542 20 : check_alignment_argument (location_t loc, const char *flag, const char *name,
2543 : int *opt_flag, const char **opt_str)
2544 : {
2545 20 : auto_vec<unsigned> align_result;
2546 20 : parse_and_check_align_values (flag, name, align_result, true, loc);
2547 :
2548 40 : if (align_result.length() >= 1 && align_result[0] == 0)
2549 : {
2550 0 : *opt_flag = 1;
2551 0 : *opt_str = NULL;
2552 : }
2553 20 : }
2554 :
2555 : /* Parse argument of -fpatchable-function-entry option ARG and store
2556 : corresponding values to PATCH_AREA_SIZE and PATCH_AREA_START.
2557 : If REPORT_ERROR is set to true, generate error for a problematic
2558 : option arguments. */
2559 :
2560 : void
2561 1757819 : parse_and_check_patch_area (const char *arg, bool report_error,
2562 : HOST_WIDE_INT *patch_area_size,
2563 : HOST_WIDE_INT *patch_area_start)
2564 : {
2565 1757819 : *patch_area_size = 0;
2566 1757819 : *patch_area_start = 0;
2567 :
2568 1757819 : if (arg == NULL)
2569 : return;
2570 :
2571 115 : char *patch_area_arg = xstrdup (arg);
2572 115 : char *comma = strchr (patch_area_arg, ',');
2573 115 : if (comma)
2574 : {
2575 52 : *comma = '\0';
2576 52 : *patch_area_size = integral_argument (patch_area_arg);
2577 52 : *patch_area_start = integral_argument (comma + 1);
2578 : }
2579 : else
2580 63 : *patch_area_size = integral_argument (patch_area_arg);
2581 :
2582 115 : if (*patch_area_size < 0
2583 115 : || *patch_area_size > USHRT_MAX
2584 107 : || *patch_area_start < 0
2585 107 : || *patch_area_start > USHRT_MAX
2586 99 : || *patch_area_size < *patch_area_start)
2587 16 : if (report_error)
2588 8 : error ("invalid arguments for %<-fpatchable-function-entry%>");
2589 :
2590 115 : free (patch_area_arg);
2591 : }
2592 :
2593 : /* Print options enabled by -fhardened. Keep this in sync with the manual! */
2594 :
2595 : static void
2596 1 : print_help_hardened ()
2597 : {
2598 1 : printf ("%s\n", "The following options are enabled by -fhardened:");
2599 : /* Unfortunately, I can't seem to use targetm.fortify_source_default_level
2600 : here. */
2601 1 : printf (" %s\n", "-D_FORTIFY_SOURCE=3 (or =2 for glibc < 2.35)");
2602 1 : printf (" %s\n", "-D_GLIBCXX_ASSERTIONS");
2603 1 : printf (" %s\n", "-ftrivial-auto-var-init=zero");
2604 : #ifdef HAVE_LD_PIE
2605 1 : printf (" %s %s\n", "-fPIE", "-pie");
2606 : #endif
2607 1 : if (HAVE_LD_NOW_SUPPORT)
2608 1 : printf (" %s\n", "-Wl,-z,now");
2609 1 : if (HAVE_LD_RELRO_SUPPORT)
2610 1 : printf (" %s\n", "-Wl,-z,relro");
2611 1 : printf (" %s\n", "-fstack-protector-strong");
2612 1 : printf (" %s\n", "-fstack-clash-protection");
2613 1 : printf (" %s\n", "-fcf-protection=full");
2614 1 : putchar ('\n');
2615 1 : }
2616 :
2617 : /* Print help when OPT__help_ is set. */
2618 :
2619 : void
2620 73 : print_help (struct gcc_options *opts, unsigned int lang_mask,
2621 : const char *help_option_argument)
2622 : {
2623 73 : const char *a = help_option_argument;
2624 73 : unsigned int include_flags = 0;
2625 : /* Note - by default we include undocumented options when listing
2626 : specific classes. If you only want to see documented options
2627 : then add ",^undocumented" to the --help= option. E.g.:
2628 :
2629 : --help=target,^undocumented */
2630 73 : unsigned int exclude_flags = 0;
2631 :
2632 73 : if (lang_mask == CL_DRIVER)
2633 0 : return;
2634 :
2635 : /* Walk along the argument string, parsing each word in turn.
2636 : The format is:
2637 : arg = [^]{word}[,{arg}]
2638 : word = {optimizers|target|warnings|undocumented|
2639 : params|common|<language>} */
2640 83 : while (*a != 0)
2641 : {
2642 83 : static const struct
2643 : {
2644 : const char *string;
2645 : unsigned int flag;
2646 : }
2647 : specifics[] =
2648 : {
2649 : { "optimizers", CL_OPTIMIZATION },
2650 : { "target", CL_TARGET },
2651 : { "warnings", CL_WARNING },
2652 : { "undocumented", CL_UNDOCUMENTED },
2653 : { "params", CL_PARAMS },
2654 : { "joined", CL_JOINED },
2655 : { "separate", CL_SEPARATE },
2656 : { "common", CL_COMMON },
2657 : { NULL, 0 }
2658 : };
2659 83 : unsigned int *pflags;
2660 83 : const char *comma;
2661 83 : unsigned int lang_flag, specific_flag;
2662 83 : unsigned int len;
2663 83 : unsigned int i;
2664 :
2665 83 : if (*a == '^')
2666 : {
2667 8 : ++a;
2668 8 : if (*a == '\0')
2669 : {
2670 1 : error ("missing argument to %qs", "--help=^");
2671 1 : break;
2672 : }
2673 : pflags = &exclude_flags;
2674 : }
2675 : else
2676 : pflags = &include_flags;
2677 :
2678 82 : comma = strchr (a, ',');
2679 82 : if (comma == NULL)
2680 72 : len = strlen (a);
2681 : else
2682 10 : len = comma - a;
2683 82 : if (len == 0)
2684 : {
2685 0 : a = comma + 1;
2686 0 : continue;
2687 : }
2688 :
2689 : /* Check to see if the string matches an option class name. */
2690 429 : for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++)
2691 416 : if (strncasecmp (a, specifics[i].string, len) == 0)
2692 : {
2693 69 : specific_flag = specifics[i].flag;
2694 69 : break;
2695 : }
2696 :
2697 : /* Check to see if the string matches a language name.
2698 : Note - we rely upon the alpha-sorted nature of the entries in
2699 : the lang_names array, specifically that shorter names appear
2700 : before their longer variants. (i.e. C before C++). That way
2701 : when we are attempting to match --help=c for example we will
2702 : match with C first and not C++. */
2703 1275 : for (i = 0, lang_flag = 0; i < cl_lang_count; i++)
2704 1207 : if (strncasecmp (a, lang_names[i], len) == 0)
2705 : {
2706 14 : lang_flag = 1U << i;
2707 14 : break;
2708 : }
2709 :
2710 82 : if (specific_flag != 0)
2711 : {
2712 69 : if (lang_flag == 0)
2713 67 : *pflags |= specific_flag;
2714 : else
2715 : {
2716 : /* The option's argument matches both the start of a
2717 : language name and the start of an option class name.
2718 : We have a special case for when the user has
2719 : specified "--help=c", but otherwise we have to issue
2720 : a warning. */
2721 2 : if (strncasecmp (a, "c", len) == 0)
2722 2 : *pflags |= lang_flag;
2723 : else
2724 0 : warning (0,
2725 : "%<--help%> argument %q.*s is ambiguous, "
2726 : "please be more specific",
2727 : len, a);
2728 : }
2729 : }
2730 13 : else if (lang_flag != 0)
2731 12 : *pflags |= lang_flag;
2732 1 : else if (strncasecmp (a, "hardened", len) == 0)
2733 1 : print_help_hardened ();
2734 : else
2735 0 : warning (0,
2736 : "unrecognized argument to %<--help=%> option: %q.*s",
2737 : len, a);
2738 :
2739 82 : if (comma == NULL)
2740 : break;
2741 10 : a = comma + 1;
2742 : }
2743 :
2744 : /* We started using PerFunction/Optimization for parameters and
2745 : a warning. We should exclude these from optimization options. */
2746 73 : if (include_flags & CL_OPTIMIZATION)
2747 7 : exclude_flags |= CL_WARNING;
2748 73 : if (!(include_flags & CL_PARAMS))
2749 44 : exclude_flags |= CL_PARAMS;
2750 :
2751 73 : if (include_flags)
2752 69 : print_specific_help (include_flags, exclude_flags, 0, opts,
2753 : lang_mask);
2754 : }
2755 :
2756 : /* Handle target- and language-independent options. Return zero to
2757 : generate an "unknown option" message. Only options that need
2758 : extra handling need to be listed here; if you simply want
2759 : DECODED->value assigned to a variable, it happens automatically. */
2760 :
2761 : bool
2762 82077567 : common_handle_option (struct gcc_options *opts,
2763 : struct gcc_options *opts_set,
2764 : const struct cl_decoded_option *decoded,
2765 : unsigned int lang_mask, int kind ATTRIBUTE_UNUSED,
2766 : location_t loc,
2767 : const struct cl_option_handlers *handlers,
2768 : diagnostics::context *dc,
2769 : void (*target_option_override_hook) (void))
2770 : {
2771 82077567 : size_t scode = decoded->opt_index;
2772 82077567 : const char *arg = decoded->arg;
2773 82077567 : HOST_WIDE_INT value = decoded->value;
2774 82077567 : enum opt_code code = (enum opt_code) scode;
2775 :
2776 82077567 : gcc_assert (decoded->canonical_option_num_elements <= 2);
2777 :
2778 82077567 : switch (code)
2779 : {
2780 7 : case OPT__help:
2781 7 : {
2782 7 : unsigned int all_langs_mask = (1U << cl_lang_count) - 1;
2783 7 : unsigned int undoc_mask;
2784 7 : unsigned int i;
2785 :
2786 7 : if (lang_mask == CL_DRIVER)
2787 : break;
2788 :
2789 0 : undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings)
2790 3 : ? 0
2791 : : CL_UNDOCUMENTED);
2792 3 : target_option_override_hook ();
2793 : /* First display any single language specific options. */
2794 54 : for (i = 0; i < cl_lang_count; i++)
2795 48 : print_specific_help
2796 48 : (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0, opts,
2797 : lang_mask);
2798 : /* Next display any multi language specific options. */
2799 3 : print_specific_help (0, undoc_mask, all_langs_mask, opts, lang_mask);
2800 : /* Then display any remaining, non-language options. */
2801 24 : for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1)
2802 18 : if (i != CL_DRIVER)
2803 15 : print_specific_help (i, undoc_mask, 0, opts, lang_mask);
2804 3 : opts->x_exit_after_options = true;
2805 3 : break;
2806 : }
2807 :
2808 0 : case OPT__target_help:
2809 0 : if (lang_mask == CL_DRIVER)
2810 : break;
2811 :
2812 0 : target_option_override_hook ();
2813 0 : print_specific_help (CL_TARGET, 0, 0, opts, lang_mask);
2814 0 : opts->x_exit_after_options = true;
2815 0 : break;
2816 :
2817 146 : case OPT__help_:
2818 146 : {
2819 146 : help_option_arguments.safe_push (arg);
2820 146 : opts->x_exit_after_options = true;
2821 146 : break;
2822 : }
2823 :
2824 78 : case OPT__version:
2825 78 : if (lang_mask == CL_DRIVER)
2826 : break;
2827 :
2828 0 : opts->x_exit_after_options = true;
2829 0 : break;
2830 :
2831 : case OPT__completion_:
2832 : break;
2833 :
2834 17586 : case OPT_fsanitize_:
2835 17586 : opts_set->x_flag_sanitize = true;
2836 17586 : opts->x_flag_sanitize
2837 17586 : = parse_sanitizer_options (arg, loc, code,
2838 : opts->x_flag_sanitize, value, true);
2839 :
2840 : /* Kernel ASan implies normal ASan but does not yet support
2841 : all features. */
2842 17586 : if (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS)
2843 : {
2844 372 : SET_OPTION_IF_UNSET (opts, opts_set,
2845 : param_asan_instrumentation_with_call_threshold,
2846 : 0);
2847 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_globals, 0);
2848 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_stack, 0);
2849 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_protect_allocas, 0);
2850 372 : SET_OPTION_IF_UNSET (opts, opts_set, param_asan_use_after_return, 0);
2851 : }
2852 17586 : if (opts->x_flag_sanitize & SANITIZE_KERNEL_HWADDRESS)
2853 : {
2854 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2855 : param_hwasan_instrument_stack, 0);
2856 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2857 : param_hwasan_random_frame_tag, 0);
2858 56 : SET_OPTION_IF_UNSET (opts, opts_set,
2859 : param_hwasan_instrument_allocas, 0);
2860 : }
2861 : break;
2862 :
2863 1070 : case OPT_fsanitize_recover_:
2864 1070 : opts->x_flag_sanitize_recover
2865 1070 : = parse_sanitizer_options (arg, loc, code,
2866 : opts->x_flag_sanitize_recover, value, true);
2867 1070 : break;
2868 :
2869 202 : case OPT_fsanitize_trap_:
2870 202 : opts->x_flag_sanitize_trap
2871 202 : = parse_sanitizer_options (arg, loc, code,
2872 : opts->x_flag_sanitize_trap, value, true);
2873 202 : break;
2874 :
2875 : case OPT_fasan_shadow_offset_:
2876 : /* Deferred. */
2877 : break;
2878 :
2879 68 : case OPT_fsanitize_address_use_after_scope:
2880 68 : opts->x_flag_sanitize_address_use_after_scope = value;
2881 68 : break;
2882 :
2883 6 : case OPT_fsanitize_recover:
2884 6 : if (value)
2885 0 : opts->x_flag_sanitize_recover
2886 0 : |= (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT)
2887 : & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN);
2888 : else
2889 6 : opts->x_flag_sanitize_recover
2890 6 : &= ~(SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2891 : break;
2892 :
2893 236 : case OPT_fsanitize_trap:
2894 236 : if (value)
2895 236 : opts->x_flag_sanitize_trap
2896 236 : |= (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2897 : else
2898 0 : opts->x_flag_sanitize_trap
2899 0 : &= ~(SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT);
2900 : break;
2901 :
2902 : case OPT_O:
2903 : case OPT_Os:
2904 : case OPT_Ofast:
2905 : case OPT_Og:
2906 : case OPT_Oz:
2907 : /* Currently handled in a prescan. */
2908 : break;
2909 :
2910 100 : case OPT_Wattributes_:
2911 100 : if (lang_mask == CL_DRIVER)
2912 : break;
2913 :
2914 100 : if (value)
2915 : {
2916 0 : error_at (loc, "arguments ignored for %<-Wattributes=%>; use "
2917 : "%<-Wno-attributes=%> instead");
2918 0 : break;
2919 : }
2920 100 : else if (arg[strlen (arg) - 1] == ',')
2921 : {
2922 0 : error_at (loc, "trailing %<,%> in arguments for "
2923 : "%<-Wno-attributes=%>");
2924 0 : break;
2925 : }
2926 :
2927 100 : add_comma_separated_to_vector (&opts->x_flag_ignored_attributes, arg);
2928 100 : break;
2929 :
2930 4329 : case OPT_Werror:
2931 4329 : dc->set_warning_as_error_requested (value);
2932 4329 : break;
2933 :
2934 7057 : case OPT_Werror_:
2935 7057 : if (lang_mask == CL_DRIVER)
2936 : break;
2937 :
2938 7057 : enable_warning_as_error (arg, value, lang_mask, handlers,
2939 : opts, opts_set, loc, dc);
2940 7057 : break;
2941 :
2942 8 : case OPT_Wfatal_errors:
2943 8 : dc->set_fatal_errors (value);
2944 8 : break;
2945 :
2946 12 : case OPT_Wstack_usage_:
2947 12 : opts->x_flag_stack_usage_info = value != -1;
2948 12 : break;
2949 :
2950 57 : case OPT_Wstrict_aliasing:
2951 57 : set_Wstrict_aliasing (opts, value);
2952 57 : break;
2953 :
2954 15 : case OPT_Wstrict_overflow:
2955 30 : opts->x_warn_strict_overflow = (value
2956 15 : ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL
2957 : : 0);
2958 15 : break;
2959 :
2960 37 : case OPT_Wsystem_headers:
2961 37 : dc->m_warn_system_headers = value;
2962 37 : break;
2963 :
2964 0 : case OPT_aux_info:
2965 0 : opts->x_flag_gen_aux_info = 1;
2966 0 : break;
2967 :
2968 1676 : case OPT_d:
2969 1676 : decode_d_option (arg, opts, loc, dc);
2970 1676 : break;
2971 :
2972 : case OPT_fcall_used_:
2973 : case OPT_fcall_saved_:
2974 : /* Deferred. */
2975 : break;
2976 :
2977 : case OPT_fdbg_cnt_:
2978 : /* Deferred. */
2979 : break;
2980 :
2981 : case OPT_fdebug_prefix_map_:
2982 : case OPT_ffile_prefix_map_:
2983 : case OPT_fprofile_prefix_map_:
2984 : /* Deferred. */
2985 : break;
2986 :
2987 0 : case OPT_fcanon_prefix_map:
2988 0 : flag_canon_prefix_map = value;
2989 0 : break;
2990 :
2991 1 : case OPT_fcallgraph_info:
2992 1 : opts->x_flag_callgraph_info = CALLGRAPH_INFO_NAKED;
2993 1 : break;
2994 :
2995 0 : case OPT_fcallgraph_info_:
2996 0 : {
2997 0 : char *my_arg, *p;
2998 0 : my_arg = xstrdup (arg);
2999 0 : p = strtok (my_arg, ",");
3000 0 : while (p)
3001 : {
3002 0 : if (strcmp (p, "su") == 0)
3003 : {
3004 0 : opts->x_flag_callgraph_info |= CALLGRAPH_INFO_STACK_USAGE;
3005 0 : opts->x_flag_stack_usage_info = true;
3006 : }
3007 0 : else if (strcmp (p, "da") == 0)
3008 0 : opts->x_flag_callgraph_info |= CALLGRAPH_INFO_DYNAMIC_ALLOC;
3009 : else
3010 : return 0;
3011 0 : p = strtok (NULL, ",");
3012 : }
3013 0 : free (my_arg);
3014 : }
3015 0 : break;
3016 :
3017 422 : case OPT_fdiagnostics_show_location_:
3018 422 : dc->set_prefixing_rule ((diagnostic_prefixing_rule_t) value);
3019 422 : break;
3020 :
3021 266449 : case OPT_fdiagnostics_show_caret:
3022 266449 : dc->get_source_printing_options ().enabled = value;
3023 266449 : break;
3024 :
3025 266449 : case OPT_fdiagnostics_show_event_links:
3026 266449 : dc->get_source_printing_options ().show_event_links_p = value;
3027 266449 : break;
3028 :
3029 1 : case OPT_fdiagnostics_show_labels:
3030 1 : dc->get_source_printing_options ().show_labels_p = value;
3031 1 : break;
3032 :
3033 266449 : case OPT_fdiagnostics_show_line_numbers:
3034 266449 : dc->get_source_printing_options ().show_line_numbers_p = value;
3035 266449 : break;
3036 :
3037 530491 : case OPT_fdiagnostics_color_:
3038 530491 : diagnostic_color_init (dc, value);
3039 530491 : break;
3040 :
3041 525275 : case OPT_fdiagnostics_urls_:
3042 525275 : diagnostic_urls_init (dc, value);
3043 525275 : break;
3044 :
3045 90 : case OPT_fdiagnostics_format_:
3046 90 : {
3047 90 : const char *basename = get_diagnostic_file_output_basename (*opts);
3048 90 : gcc_assert (dc);
3049 90 : diagnostics::output_format_init (*dc,
3050 : opts->x_main_input_filename, basename,
3051 : (enum diagnostics_output_format)value,
3052 90 : opts->x_flag_diagnostics_json_formatting);
3053 90 : break;
3054 : }
3055 :
3056 36 : case OPT_fdiagnostics_add_output_:
3057 36 : handle_OPT_fdiagnostics_add_output_ (*opts, *dc, arg, loc);
3058 36 : break;
3059 :
3060 14 : case OPT_fdiagnostics_set_output_:
3061 14 : handle_OPT_fdiagnostics_set_output_ (*opts, *dc, arg, loc);
3062 14 : break;
3063 :
3064 586770 : case OPT_fdiagnostics_text_art_charset_:
3065 586770 : dc->set_text_art_charset ((enum diagnostic_text_art_charset)value);
3066 586770 : break;
3067 :
3068 4 : case OPT_fdiagnostics_parseable_fixits:
3069 4 : dc->set_extra_output_kind (value
3070 : ? EXTRA_DIAGNOSTIC_OUTPUT_fixits_v1
3071 : : EXTRA_DIAGNOSTIC_OUTPUT_none);
3072 4 : break;
3073 :
3074 28 : case OPT_fdiagnostics_column_unit_:
3075 28 : dc->get_column_options ().m_column_unit
3076 28 : = (enum diagnostics_column_unit)value;
3077 28 : break;
3078 :
3079 12 : case OPT_fdiagnostics_column_origin_:
3080 12 : dc->get_column_options ().m_column_origin = value;
3081 12 : break;
3082 :
3083 4 : case OPT_fdiagnostics_escape_format_:
3084 4 : dc->set_escape_format ((enum diagnostics_escape_format)value);
3085 4 : break;
3086 :
3087 5 : case OPT_fdiagnostics_show_highlight_colors:
3088 5 : dc->set_show_highlight_colors (value);
3089 5 : break;
3090 :
3091 0 : case OPT_fdiagnostics_show_cwe:
3092 0 : dc->set_show_cwe (value);
3093 0 : break;
3094 :
3095 0 : case OPT_fdiagnostics_show_rules:
3096 0 : dc->set_show_rules (value);
3097 0 : break;
3098 :
3099 296844 : case OPT_fdiagnostics_path_format_:
3100 296844 : dc->set_path_format ((enum diagnostic_path_format)value);
3101 296844 : break;
3102 :
3103 76 : case OPT_fdiagnostics_show_path_depths:
3104 76 : dc->set_show_path_depths (value);
3105 76 : break;
3106 :
3107 54 : case OPT_fdiagnostics_show_option:
3108 54 : dc->set_show_option_requested (value);
3109 54 : break;
3110 :
3111 266449 : case OPT_fdiagnostics_show_nesting:
3112 266449 : dc->set_show_nesting (value);
3113 266449 : break;
3114 :
3115 0 : case OPT_fdiagnostics_show_nesting_locations:
3116 0 : dc->set_show_nesting_locations (value);
3117 0 : break;
3118 :
3119 0 : case OPT_fdiagnostics_show_nesting_levels:
3120 0 : dc->set_show_nesting_levels (value);
3121 0 : break;
3122 :
3123 1 : case OPT_fdiagnostics_minimum_margin_width_:
3124 1 : dc->get_source_printing_options ().min_margin_width = value;
3125 1 : break;
3126 :
3127 : case OPT_fdump_:
3128 : /* Deferred. */
3129 : break;
3130 :
3131 631187 : case OPT_ffast_math:
3132 631187 : set_fast_math_flags (opts, value);
3133 631187 : break;
3134 :
3135 366 : case OPT_funsafe_math_optimizations:
3136 366 : set_unsafe_math_optimizations_flags (opts, value);
3137 366 : break;
3138 :
3139 : case OPT_ffixed_:
3140 : /* Deferred. */
3141 : break;
3142 :
3143 9 : case OPT_finline_limit_:
3144 9 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_single,
3145 : value / 2);
3146 9 : SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_auto,
3147 : value / 2);
3148 : break;
3149 :
3150 1 : case OPT_finstrument_functions_exclude_function_list_:
3151 1 : add_comma_separated_to_vector
3152 1 : (&opts->x_flag_instrument_functions_exclude_functions, arg);
3153 1 : break;
3154 :
3155 1 : case OPT_finstrument_functions_exclude_file_list_:
3156 1 : add_comma_separated_to_vector
3157 1 : (&opts->x_flag_instrument_functions_exclude_files, arg);
3158 1 : break;
3159 :
3160 104092 : case OPT_fmessage_length_:
3161 104092 : pp_set_line_maximum_length (dc->get_reference_printer (), value);
3162 104092 : dc->set_caret_max_width (value);
3163 104092 : break;
3164 :
3165 : case OPT_fopt_info:
3166 : case OPT_fopt_info_:
3167 : /* Deferred. */
3168 : break;
3169 :
3170 : case OPT_foffload_options_:
3171 : /* Deferred. */
3172 : break;
3173 :
3174 0 : case OPT_foffload_abi_:
3175 0 : case OPT_foffload_abi_host_opts_:
3176 : #ifdef ACCEL_COMPILER
3177 : /* Handled in the 'mkoffload's. */
3178 : #else
3179 0 : error_at (loc,
3180 : "%qs option can be specified only for offload compiler",
3181 : (code == OPT_foffload_abi_) ? "-foffload-abi"
3182 : : "-foffload-abi-host-opts");
3183 : #endif
3184 0 : break;
3185 :
3186 1 : case OPT_fpack_struct_:
3187 1 : if (value <= 0 || (value & (value - 1)) || value > 16)
3188 0 : error_at (loc,
3189 : "structure alignment must be a small power of two, not %wu",
3190 : value);
3191 : else
3192 1 : opts->x_initial_max_fld_align = value;
3193 : break;
3194 :
3195 : case OPT_fplugin_:
3196 : case OPT_fplugin_arg_:
3197 : /* Deferred. */
3198 : break;
3199 :
3200 0 : case OPT_fprofile_use_:
3201 0 : opts->x_profile_data_prefix = xstrdup (arg);
3202 0 : opts->x_flag_profile_use = true;
3203 0 : value = true;
3204 : /* No break here - do -fprofile-use processing. */
3205 : /* FALLTHRU */
3206 155 : case OPT_fprofile_use:
3207 155 : enable_fdo_optimizations (opts, opts_set, value, false);
3208 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_reorder_functions,
3209 : value);
3210 : /* Indirect call profiling should do all useful transformations
3211 : speculative devirtualization does. */
3212 155 : if (opts->x_flag_value_profile_transformations)
3213 : {
3214 155 : SET_OPTION_IF_UNSET (opts, opts_set, flag_devirtualize_speculatively,
3215 : false);
3216 155 : SET_OPTION_IF_UNSET (opts, opts_set,
3217 : flag_speculatively_call_stored_functions, false);
3218 : }
3219 : break;
3220 :
3221 0 : case OPT_fauto_profile_:
3222 0 : opts->x_auto_profile_file = xstrdup (arg);
3223 0 : opts->x_flag_auto_profile = true;
3224 0 : value = true;
3225 : /* No break here - do -fauto-profile processing. */
3226 : /* FALLTHRU */
3227 0 : case OPT_fauto_profile:
3228 0 : enable_fdo_optimizations (opts, opts_set, value, true);
3229 0 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_correction, value);
3230 : break;
3231 :
3232 2 : case OPT_fprofile_generate_:
3233 2 : opts->x_profile_data_prefix = xstrdup (arg);
3234 2 : value = true;
3235 : /* No break here - do -fprofile-generate processing. */
3236 : /* FALLTHRU */
3237 253 : case OPT_fprofile_generate:
3238 253 : SET_OPTION_IF_UNSET (opts, opts_set, profile_arc_flag, value);
3239 253 : SET_OPTION_IF_UNSET (opts, opts_set, flag_profile_values, value);
3240 253 : SET_OPTION_IF_UNSET (opts, opts_set, flag_inline_functions, value);
3241 253 : SET_OPTION_IF_UNSET (opts, opts_set, flag_ipa_bit_cp, value);
3242 : break;
3243 :
3244 2 : case OPT_fprofile_info_section:
3245 2 : opts->x_profile_info_section = ".gcov_info";
3246 2 : break;
3247 :
3248 36 : case OPT_fpatchable_function_entry_:
3249 36 : {
3250 36 : HOST_WIDE_INT patch_area_size, patch_area_start;
3251 36 : parse_and_check_patch_area (arg, true, &patch_area_size,
3252 : &patch_area_start);
3253 : }
3254 36 : break;
3255 :
3256 : case OPT_ftree_vectorize:
3257 : /* Automatically sets -ftree-loop-vectorize and
3258 : -ftree-slp-vectorize. Nothing more to do here. */
3259 : break;
3260 77 : case OPT_fzero_call_used_regs_:
3261 77 : opts->x_flag_zero_call_used_regs
3262 77 : = parse_zero_call_used_regs_options (arg);
3263 77 : break;
3264 :
3265 12660 : case OPT_fshow_column:
3266 12660 : dc->m_show_column = value;
3267 12660 : break;
3268 :
3269 0 : case OPT_frandom_seed:
3270 : /* The real switch is -fno-random-seed. */
3271 0 : if (value)
3272 : return false;
3273 : /* Deferred. */
3274 : break;
3275 :
3276 : case OPT_frandom_seed_:
3277 : /* Deferred. */
3278 : break;
3279 :
3280 : case OPT_fsched_verbose_:
3281 : #ifdef INSN_SCHEDULING
3282 : /* Handled with Var in common.opt. */
3283 : break;
3284 : #else
3285 : return false;
3286 : #endif
3287 :
3288 1 : case OPT_fsched_stalled_insns_:
3289 1 : opts->x_flag_sched_stalled_insns = value;
3290 1 : if (opts->x_flag_sched_stalled_insns == 0)
3291 1 : opts->x_flag_sched_stalled_insns = -1;
3292 : break;
3293 :
3294 0 : case OPT_fsched_stalled_insns_dep_:
3295 0 : opts->x_flag_sched_stalled_insns_dep = value;
3296 0 : break;
3297 :
3298 69 : case OPT_fstack_check_:
3299 69 : if (!strcmp (arg, "no"))
3300 0 : opts->x_flag_stack_check = NO_STACK_CHECK;
3301 69 : else if (!strcmp (arg, "generic"))
3302 : /* This is the old stack checking method. */
3303 36 : opts->x_flag_stack_check = STACK_CHECK_BUILTIN
3304 : ? FULL_BUILTIN_STACK_CHECK
3305 : : GENERIC_STACK_CHECK;
3306 33 : else if (!strcmp (arg, "specific"))
3307 : /* This is the new stack checking method. */
3308 33 : opts->x_flag_stack_check = STACK_CHECK_BUILTIN
3309 : ? FULL_BUILTIN_STACK_CHECK
3310 : : STACK_CHECK_STATIC_BUILTIN
3311 : ? STATIC_BUILTIN_STACK_CHECK
3312 : : GENERIC_STACK_CHECK;
3313 : else
3314 0 : warning_at (loc, 0, "unknown stack check parameter %qs", arg);
3315 : break;
3316 :
3317 1 : case OPT_fstack_limit:
3318 : /* The real switch is -fno-stack-limit. */
3319 1 : if (value)
3320 : return false;
3321 : /* Deferred. */
3322 : break;
3323 :
3324 : case OPT_fstack_limit_register_:
3325 : case OPT_fstack_limit_symbol_:
3326 : /* Deferred. */
3327 : break;
3328 :
3329 558 : case OPT_fstack_usage:
3330 558 : opts->x_flag_stack_usage = value;
3331 558 : opts->x_flag_stack_usage_info = value != 0;
3332 558 : break;
3333 :
3334 126292 : case OPT_g:
3335 126292 : set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set,
3336 : loc);
3337 126292 : break;
3338 :
3339 0 : case OPT_gcodeview:
3340 0 : set_debug_level (CODEVIEW_DEBUG, false, arg, opts, opts_set, loc);
3341 0 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3342 0 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3343 : break;
3344 :
3345 156 : case OPT_gbtf:
3346 156 : set_debug_level (BTF_DEBUG, false, arg, opts, opts_set, loc);
3347 : /* set the debug level to level 2, but if already at level 3,
3348 : don't lower it. */
3349 156 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3350 156 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3351 : break;
3352 :
3353 507 : case OPT_gctf:
3354 507 : set_debug_level (CTF_DEBUG, false, arg, opts, opts_set, loc);
3355 : /* CTF generation feeds off DWARF dies. For optimal CTF, switch debug
3356 : info level to 2. If off or at level 1, set it to level 2, but if
3357 : already at level 3, don't lower it. */
3358 507 : if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL
3359 501 : && opts->x_ctf_debug_info_level > CTFINFO_LEVEL_NONE)
3360 499 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3361 : break;
3362 :
3363 245 : case OPT_gdwarf:
3364 245 : if (arg && strlen (arg) != 0)
3365 : {
3366 0 : error_at (loc, "%<-gdwarf%s%> is ambiguous; "
3367 : "use %<-gdwarf-%s%> for DWARF version "
3368 : "or %<-gdwarf%> %<-g%s%> for debug level", arg, arg, arg);
3369 0 : break;
3370 : }
3371 : else
3372 245 : value = opts->x_dwarf_version;
3373 :
3374 : /* FALLTHRU */
3375 4733 : case OPT_gdwarf_:
3376 4733 : if (value < 2 || value > 5)
3377 0 : error_at (loc, "dwarf version %wu is not supported", value);
3378 : else
3379 4733 : opts->x_dwarf_version = value;
3380 4733 : set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc);
3381 4733 : break;
3382 :
3383 20 : case OPT_ggdb:
3384 20 : set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc);
3385 20 : break;
3386 :
3387 0 : case OPT_gvms:
3388 0 : set_debug_level (VMS_DEBUG, false, arg, opts, opts_set, loc);
3389 0 : break;
3390 :
3391 : case OPT_gz:
3392 : case OPT_gz_:
3393 : /* Handled completely via specs. */
3394 : break;
3395 :
3396 64838 : case OPT_pedantic_errors:
3397 64838 : dc->m_pedantic_errors = 1;
3398 64838 : control_warning_option (OPT_Wpedantic,
3399 : static_cast<int> (diagnostics::kind::error),
3400 : NULL, value,
3401 : loc, lang_mask,
3402 : handlers, opts, opts_set,
3403 : dc);
3404 64838 : break;
3405 :
3406 24364 : case OPT_flto:
3407 24364 : opts->x_flag_lto = value ? "" : NULL;
3408 24364 : break;
3409 :
3410 13 : case OPT_flto_:
3411 13 : if (strcmp (arg, "none") != 0
3412 13 : && strcmp (arg, "jobserver") != 0
3413 13 : && strcmp (arg, "auto") != 0
3414 1 : && atoi (arg) == 0)
3415 1 : error_at (loc,
3416 : "unrecognized argument to %<-flto=%> option: %qs", arg);
3417 : break;
3418 :
3419 44090 : case OPT_w:
3420 44090 : dc->m_inhibit_warnings = true;
3421 44090 : break;
3422 :
3423 44 : case OPT_fmax_errors_:
3424 44 : dc->set_max_errors (value);
3425 44 : break;
3426 :
3427 : case OPT_fuse_ld_bfd:
3428 : case OPT_fuse_ld_gold:
3429 : case OPT_fuse_ld_lld:
3430 : case OPT_fuse_ld_mold:
3431 : case OPT_fuse_ld_wild:
3432 : case OPT_fuse_linker_plugin:
3433 : /* No-op. Used by the driver and passed to us because it starts with f.*/
3434 : break;
3435 :
3436 492 : case OPT_fwrapv:
3437 492 : if (value)
3438 486 : opts->x_flag_trapv = 0;
3439 : break;
3440 :
3441 134 : case OPT_ftrapv:
3442 134 : if (value)
3443 134 : opts->x_flag_wrapv = 0;
3444 : break;
3445 :
3446 216 : case OPT_fstrict_overflow:
3447 216 : opts->x_flag_wrapv = !value;
3448 216 : opts->x_flag_wrapv_pointer = !value;
3449 216 : if (!value)
3450 63 : opts->x_flag_trapv = 0;
3451 : break;
3452 :
3453 630240 : case OPT_fipa_icf:
3454 630240 : opts->x_flag_ipa_icf_functions = value;
3455 630240 : opts->x_flag_ipa_icf_variables = value;
3456 630240 : break;
3457 :
3458 2 : case OPT_falign_loops_:
3459 2 : check_alignment_argument (loc, arg, "loops",
3460 : &opts->x_flag_align_loops,
3461 : &opts->x_str_align_loops);
3462 2 : break;
3463 :
3464 2 : case OPT_falign_jumps_:
3465 2 : check_alignment_argument (loc, arg, "jumps",
3466 : &opts->x_flag_align_jumps,
3467 : &opts->x_str_align_jumps);
3468 2 : break;
3469 :
3470 3 : case OPT_falign_labels_:
3471 3 : check_alignment_argument (loc, arg, "labels",
3472 : &opts->x_flag_align_labels,
3473 : &opts->x_str_align_labels);
3474 3 : break;
3475 :
3476 13 : case OPT_falign_functions_:
3477 13 : check_alignment_argument (loc, arg, "functions",
3478 : &opts->x_flag_align_functions,
3479 : &opts->x_str_align_functions);
3480 13 : break;
3481 :
3482 12 : case OPT_ftabstop_:
3483 : /* It is documented that we silently ignore silly values. */
3484 12 : if (value >= 1 && value <= 100)
3485 8 : dc->get_column_options ().m_tabstop = value;
3486 : break;
3487 :
3488 16 : case OPT_freport_bug:
3489 16 : dc->set_report_bug (value);
3490 16 : break;
3491 :
3492 0 : case OPT_fmultiflags:
3493 0 : gcc_checking_assert (lang_mask == CL_DRIVER);
3494 : break;
3495 :
3496 76080050 : default:
3497 : /* If the flag was handled in a standard way, assume the lack of
3498 : processing here is intentional. */
3499 76080050 : gcc_assert (option_flag_var (scode, opts));
3500 : break;
3501 : }
3502 :
3503 82077566 : common_handle_option_auto (opts, opts_set, decoded, lang_mask, kind,
3504 : loc, handlers, dc);
3505 82077566 : return true;
3506 : }
3507 :
3508 : /* Used to set the level of strict aliasing warnings in OPTS,
3509 : when no level is specified (i.e., when -Wstrict-aliasing, and not
3510 : -Wstrict-aliasing=level was given).
3511 : ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
3512 : and 0 otherwise. After calling this function, wstrict_aliasing will be
3513 : set to the default value of -Wstrict_aliasing=level, currently 3. */
3514 : static void
3515 57 : set_Wstrict_aliasing (struct gcc_options *opts, int onoff)
3516 : {
3517 57 : gcc_assert (onoff == 0 || onoff == 1);
3518 57 : if (onoff != 0)
3519 56 : opts->x_warn_strict_aliasing = 3;
3520 : else
3521 1 : opts->x_warn_strict_aliasing = 0;
3522 57 : }
3523 :
3524 : /* The following routines are useful in setting all the flags that
3525 : -ffast-math and -fno-fast-math imply. */
3526 : static void
3527 631187 : set_fast_math_flags (struct gcc_options *opts, int set)
3528 : {
3529 631187 : if (!opts->frontend_set_flag_unsafe_math_optimizations)
3530 : {
3531 631187 : opts->x_flag_unsafe_math_optimizations = set;
3532 631187 : set_unsafe_math_optimizations_flags (opts, set);
3533 : }
3534 631187 : if (!opts->frontend_set_flag_finite_math_only)
3535 631187 : opts->x_flag_finite_math_only = set;
3536 631187 : if (!opts->frontend_set_flag_errno_math)
3537 580186 : opts->x_flag_errno_math = !set;
3538 631187 : if (set)
3539 : {
3540 1989 : if (opts->frontend_set_flag_excess_precision == EXCESS_PRECISION_DEFAULT)
3541 1989 : opts->x_flag_excess_precision
3542 1989 : = set ? EXCESS_PRECISION_FAST : EXCESS_PRECISION_DEFAULT;
3543 1989 : if (!opts->frontend_set_flag_signaling_nans)
3544 1989 : opts->x_flag_signaling_nans = 0;
3545 1989 : if (!opts->frontend_set_flag_rounding_math)
3546 1989 : opts->x_flag_rounding_math = 0;
3547 1989 : if (!opts->frontend_set_flag_complex_method)
3548 1989 : opts->x_flag_complex_method = 0;
3549 : }
3550 631187 : }
3551 :
3552 : /* When -funsafe-math-optimizations is set the following
3553 : flags are set as well. */
3554 : static void
3555 631553 : set_unsafe_math_optimizations_flags (struct gcc_options *opts, int set)
3556 : {
3557 631553 : if (!opts->frontend_set_flag_trapping_math)
3558 631553 : opts->x_flag_trapping_math = !set;
3559 631553 : if (!opts->frontend_set_flag_signed_zeros)
3560 631553 : opts->x_flag_signed_zeros = !set;
3561 631553 : if (!opts->frontend_set_flag_associative_math)
3562 599901 : opts->x_flag_associative_math = set;
3563 631553 : if (!opts->frontend_set_flag_reciprocal_math)
3564 631553 : opts->x_flag_reciprocal_math = set;
3565 631553 : }
3566 :
3567 : /* Return true iff flags in OPTS are set as if -ffast-math. */
3568 : bool
3569 47443673 : fast_math_flags_set_p (const struct gcc_options *opts)
3570 : {
3571 47443673 : return (!opts->x_flag_trapping_math
3572 950498 : && opts->x_flag_unsafe_math_optimizations
3573 943198 : && opts->x_flag_finite_math_only
3574 943134 : && !opts->x_flag_signed_zeros
3575 943120 : && !opts->x_flag_errno_math
3576 48386789 : && opts->x_flag_excess_precision == EXCESS_PRECISION_FAST);
3577 : }
3578 :
3579 : /* Return true iff flags are set as if -ffast-math but using the flags stored
3580 : in the struct cl_optimization structure. */
3581 : bool
3582 1270 : fast_math_flags_struct_set_p (struct cl_optimization *opt)
3583 : {
3584 1270 : return (!opt->x_flag_trapping_math
3585 39 : && opt->x_flag_unsafe_math_optimizations
3586 19 : && opt->x_flag_finite_math_only
3587 19 : && !opt->x_flag_signed_zeros
3588 1289 : && !opt->x_flag_errno_math);
3589 : }
3590 :
3591 : /* Handle a debug output -g switch for options OPTS
3592 : (OPTS_SET->x_write_symbols storing whether a debug format was passed
3593 : explicitly), location LOC. EXTENDED is true or false to support
3594 : extended output (2 is special and means "-ggdb" was given). */
3595 : static void
3596 131708 : set_debug_level (uint32_t dinfo, int extended, const char *arg,
3597 : struct gcc_options *opts, struct gcc_options *opts_set,
3598 : location_t loc)
3599 : {
3600 131708 : if (dinfo == NO_DEBUG)
3601 : {
3602 126312 : if (opts->x_write_symbols == NO_DEBUG)
3603 : {
3604 110224 : opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE;
3605 :
3606 110224 : if (extended == 2)
3607 : {
3608 : #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO
3609 110224 : if (opts->x_write_symbols & CTF_DEBUG)
3610 : opts->x_write_symbols |= DWARF2_DEBUG;
3611 : else
3612 110224 : opts->x_write_symbols = DWARF2_DEBUG;
3613 : #endif
3614 : }
3615 :
3616 110224 : if (opts->x_write_symbols == NO_DEBUG)
3617 : warning_at (loc, 0, "target system does not support debug output");
3618 : }
3619 16088 : else if ((opts->x_write_symbols & CTF_DEBUG)
3620 16054 : || (opts->x_write_symbols & BTF_DEBUG)
3621 16054 : || (opts->x_write_symbols & CODEVIEW_DEBUG))
3622 : {
3623 34 : opts->x_write_symbols |= DWARF2_DEBUG;
3624 34 : opts_set->x_write_symbols |= DWARF2_DEBUG;
3625 : }
3626 : }
3627 : else
3628 : {
3629 : /* Make and retain the choice if both CTF and DWARF debug info are to
3630 : be generated. */
3631 5396 : if (((dinfo == DWARF2_DEBUG) || (dinfo == CTF_DEBUG))
3632 5240 : && ((opts->x_write_symbols == (DWARF2_DEBUG|CTF_DEBUG))
3633 : || (opts->x_write_symbols == DWARF2_DEBUG)
3634 : || (opts->x_write_symbols == CTF_DEBUG)))
3635 : {
3636 122 : opts->x_write_symbols |= dinfo;
3637 122 : opts_set->x_write_symbols |= dinfo;
3638 : }
3639 : /* However, CTF and BTF are not allowed together at this time. */
3640 5274 : else if (((dinfo == DWARF2_DEBUG) || (dinfo == BTF_DEBUG))
3641 4773 : && ((opts->x_write_symbols == (DWARF2_DEBUG|BTF_DEBUG))
3642 : || (opts->x_write_symbols == DWARF2_DEBUG)
3643 : || (opts->x_write_symbols == BTF_DEBUG)))
3644 : {
3645 0 : opts->x_write_symbols |= dinfo;
3646 0 : opts_set->x_write_symbols |= dinfo;
3647 : }
3648 : else
3649 : {
3650 : /* Does it conflict with an already selected debug format? */
3651 5274 : if (opts_set->x_write_symbols != NO_DEBUG
3652 0 : && opts->x_write_symbols != NO_DEBUG
3653 0 : && dinfo != opts->x_write_symbols)
3654 : {
3655 0 : gcc_assert (debug_set_count (dinfo) <= 1);
3656 0 : error_at (loc, "debug format %qs conflicts with prior selection",
3657 0 : debug_type_names[debug_set_to_format (dinfo)]);
3658 : }
3659 5274 : opts->x_write_symbols = dinfo;
3660 5274 : opts_set->x_write_symbols = dinfo;
3661 : }
3662 : }
3663 :
3664 131708 : if (dinfo != BTF_DEBUG)
3665 : {
3666 : /* A debug flag without a level defaults to level 2.
3667 : If off or at level 1, set it to level 2, but if already
3668 : at level 3, don't lower it. */
3669 131552 : if (*arg == '\0')
3670 : {
3671 126171 : if (dinfo == CTF_DEBUG)
3672 505 : opts->x_ctf_debug_info_level = CTFINFO_LEVEL_NORMAL;
3673 125666 : else if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL)
3674 112070 : opts->x_debug_info_level = DINFO_LEVEL_NORMAL;
3675 : }
3676 : else
3677 : {
3678 5381 : int argval = integral_argument (arg);
3679 5381 : if (argval == -1)
3680 0 : error_at (loc, "unrecognized debug output level %qs", arg);
3681 5381 : else if (argval > 3)
3682 0 : error_at (loc, "debug output level %qs is too high", arg);
3683 : else
3684 : {
3685 5381 : if (dinfo == CTF_DEBUG)
3686 2 : opts->x_ctf_debug_info_level
3687 2 : = (enum ctf_debug_info_levels) argval;
3688 : else
3689 5379 : opts->x_debug_info_level = (enum debug_info_levels) argval;
3690 : }
3691 : }
3692 : }
3693 156 : else if (*arg != '\0')
3694 0 : error_at (loc, "unrecognized btf debug output level %qs", arg);
3695 131708 : }
3696 :
3697 : /* Arrange to dump core on error for diagnostic context DC. (The
3698 : regular error message is still printed first, except in the case of
3699 : abort ().) */
3700 :
3701 : static void
3702 13 : setup_core_dumping (diagnostics::context *dc)
3703 : {
3704 : #ifdef SIGABRT
3705 13 : signal (SIGABRT, SIG_DFL);
3706 : #endif
3707 : #if defined(HAVE_SETRLIMIT)
3708 13 : {
3709 13 : struct rlimit rlim;
3710 13 : if (getrlimit (RLIMIT_CORE, &rlim) != 0)
3711 0 : fatal_error (input_location, "getting core file size maximum limit: %m");
3712 13 : rlim.rlim_cur = rlim.rlim_max;
3713 13 : if (setrlimit (RLIMIT_CORE, &rlim) != 0)
3714 0 : fatal_error (input_location,
3715 : "setting core file size limit to maximum: %m");
3716 : }
3717 : #endif
3718 13 : dc->set_abort_on_error (true);
3719 13 : }
3720 :
3721 : /* Parse a -d<ARG> command line switch for OPTS, location LOC,
3722 : diagnostic context DC. */
3723 :
3724 : static void
3725 1676 : decode_d_option (const char *arg, struct gcc_options *opts,
3726 : location_t loc, diagnostics::context *dc)
3727 : {
3728 1676 : int c;
3729 :
3730 3352 : while (*arg)
3731 1676 : switch (c = *arg++)
3732 : {
3733 699 : case 'A':
3734 699 : opts->x_flag_debug_asm = 1;
3735 699 : break;
3736 123 : case 'p':
3737 123 : opts->x_flag_print_asm_name = 1;
3738 123 : break;
3739 5 : case 'P':
3740 5 : opts->x_flag_dump_rtl_in_asm = 1;
3741 5 : opts->x_flag_print_asm_name = 1;
3742 5 : break;
3743 10 : case 'x':
3744 10 : opts->x_rtl_dump_and_exit = 1;
3745 10 : break;
3746 : case 'D': /* These are handled by the preprocessor. */
3747 : case 'I':
3748 : case 'M':
3749 : case 'N':
3750 : case 'U':
3751 : break;
3752 13 : case 'H':
3753 13 : setup_core_dumping (dc);
3754 13 : break;
3755 4 : case 'a':
3756 4 : opts->x_flag_dump_all_passed = true;
3757 4 : break;
3758 :
3759 0 : default:
3760 0 : warning_at (loc, 0, "unrecognized gcc debugging option: %c", c);
3761 0 : break;
3762 : }
3763 1676 : }
3764 :
3765 : /* Enable (or disable if VALUE is 0) a warning option ARG (language
3766 : mask LANG_MASK, option handlers HANDLERS) as an error for option
3767 : structures OPTS and OPTS_SET, diagnostic context DC (possibly
3768 : NULL), location LOC. This is used by -Werror=. */
3769 :
3770 : static void
3771 7057 : enable_warning_as_error (const char *arg, int value, unsigned int lang_mask,
3772 : const struct cl_option_handlers *handlers,
3773 : struct gcc_options *opts,
3774 : struct gcc_options *opts_set,
3775 : location_t loc, diagnostics::context *dc)
3776 : {
3777 7057 : char *new_option;
3778 7057 : int option_index;
3779 :
3780 7057 : new_option = XNEWVEC (char, strlen (arg) + 2);
3781 7057 : new_option[0] = 'W';
3782 7057 : strcpy (new_option + 1, arg);
3783 7057 : option_index = find_opt (new_option, lang_mask);
3784 7057 : if (option_index == OPT_SPECIAL_unknown)
3785 : {
3786 2 : option_proposer op;
3787 2 : const char *hint = op.suggest_option (new_option);
3788 2 : if (hint)
3789 3 : error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>;"
3790 : " did you mean %<-%s%>?", value ? "" : "no-",
3791 : arg, new_option, hint);
3792 : else
3793 0 : error_at (loc, "%<-W%serror=%s%>: no option %<-%s%>",
3794 : value ? "" : "no-", arg, new_option);
3795 2 : }
3796 7055 : else if (!(cl_options[option_index].flags & CL_WARNING))
3797 4 : error_at (loc, "%<-Werror=%s%>: %<-%s%> is not an option that "
3798 : "controls warnings", arg, new_option);
3799 : else
3800 : {
3801 1106 : const enum diagnostics::kind kind = (value
3802 7051 : ? diagnostics::kind::error
3803 : : diagnostics::kind::warning);
3804 7051 : const char *arg = NULL;
3805 :
3806 7051 : if (cl_options[option_index].flags & CL_JOINED)
3807 17 : arg = new_option + cl_options[option_index].opt_len;
3808 7051 : control_warning_option (option_index, (int) kind, arg, value,
3809 : loc, lang_mask,
3810 : handlers, opts, opts_set, dc);
3811 : }
3812 7057 : free (new_option);
3813 7057 : }
3814 :
3815 : /* Return malloced memory for the name of the option OPTION_INDEX
3816 : which enabled a diagnostic, originally of type
3817 : ORIG_DIAG_KIND but possibly converted to DIAG_KIND by options such
3818 : as -Werror. */
3819 :
3820 : char *
3821 1559536 : compiler_diagnostic_option_id_manager::
3822 : make_option_name (diagnostics::option_id option_id,
3823 : enum diagnostics::kind orig_diag_kind,
3824 : enum diagnostics::kind diag_kind) const
3825 : {
3826 1559536 : if (option_id.m_idx)
3827 : {
3828 : /* A warning classified as an error. */
3829 93681 : if ((orig_diag_kind == diagnostics::kind::warning
3830 93681 : || orig_diag_kind == diagnostics::kind::pedwarn)
3831 78897 : && diag_kind == diagnostics::kind::error)
3832 211 : return concat (cl_options[OPT_Werror_].opt_text,
3833 : /* Skip over "-W". */
3834 211 : cl_options[option_id.m_idx].opt_text + 2,
3835 211 : NULL);
3836 : /* A warning with option. */
3837 : else
3838 93470 : return xstrdup (cl_options[option_id.m_idx].opt_text);
3839 : }
3840 : /* A warning without option classified as an error. */
3841 1465855 : else if ((orig_diag_kind == diagnostics::kind::warning
3842 1465855 : || orig_diag_kind == diagnostics::kind::pedwarn
3843 1435378 : || diag_kind == diagnostics::kind::warning)
3844 1465855 : && m_context.warning_as_error_requested_p ())
3845 102 : return xstrdup (cl_options[OPT_Werror].opt_text);
3846 : else
3847 : return NULL;
3848 : }
3849 :
3850 : /* Get the page within the documentation for this option. */
3851 :
3852 : static const char *
3853 12129 : get_option_html_page (int option_index)
3854 : {
3855 12129 : const cl_option *cl_opt = &cl_options[option_index];
3856 :
3857 : #ifdef CL_Fortran
3858 12129 : if ((cl_opt->flags & CL_Fortran) != 0
3859 : /* If it is option common to both C/C++ and Fortran, it is documented
3860 : in gcc/ rather than gfortran/ docs. */
3861 90 : && (cl_opt->flags & CL_C) == 0
3862 : #ifdef CL_CXX
3863 80 : && (cl_opt->flags & CL_CXX) == 0
3864 : #endif
3865 : )
3866 80 : return "gfortran/Error-and-Warning-Options.html";
3867 : #endif
3868 :
3869 : return nullptr;
3870 : }
3871 :
3872 : /* Get the url within the documentation for this option, or NULL. */
3873 :
3874 : label_text
3875 26369 : get_option_url_suffix (int option_index, unsigned lang_mask)
3876 : {
3877 26369 : if (const char *url = get_opt_url_suffix (option_index, lang_mask))
3878 :
3879 14240 : return label_text::borrow (url);
3880 :
3881 : /* Fallback code for some options that aren't handled byt opt_url_suffixes
3882 : e.g. links below "gfortran/". */
3883 12129 : if (const char *html_page = get_option_html_page (option_index))
3884 80 : return label_text::take
3885 : (concat (html_page,
3886 : /* Expect an anchor of the form "index-Wfoo" e.g.
3887 : <a name="index-Wformat"></a>, and thus an id within
3888 : the page of "#index-Wformat". */
3889 : "#index",
3890 80 : cl_options[option_index].opt_text,
3891 80 : NULL));
3892 :
3893 12049 : return label_text ();
3894 : }
3895 :
3896 : /* Return malloced memory for a URL describing the option OPTION_INDEX
3897 : which enabled a diagnostic. */
3898 :
3899 : char *
3900 123 : gcc_diagnostic_option_id_manager::
3901 : make_option_url (diagnostics::option_id option_id) const
3902 : {
3903 123 : if (option_id.m_idx)
3904 : {
3905 123 : label_text url_suffix = get_option_url_suffix (option_id.m_idx,
3906 123 : m_lang_mask);
3907 123 : if (url_suffix.get ())
3908 123 : return concat (DOCUMENTATION_ROOT_URL, url_suffix.get (), nullptr);
3909 123 : }
3910 :
3911 : return nullptr;
3912 : }
3913 :
3914 : /* Return a heap allocated producer with command line options. */
3915 :
3916 : char *
3917 52609 : gen_command_line_string (cl_decoded_option *options,
3918 : unsigned int options_count)
3919 : {
3920 52609 : auto_vec<const char *> switches;
3921 52609 : char *options_string, *tail;
3922 52609 : const char *p;
3923 52609 : size_t len = 0;
3924 :
3925 1824425 : for (unsigned i = 0; i < options_count; i++)
3926 1771816 : switch (options[i].opt_index)
3927 : {
3928 797142 : case OPT_o:
3929 797142 : case OPT_d:
3930 797142 : case OPT_dumpbase:
3931 797142 : case OPT_dumpbase_ext:
3932 797142 : case OPT_dumpdir:
3933 797142 : case OPT_quiet:
3934 797142 : case OPT_version:
3935 797142 : case OPT_v:
3936 797142 : case OPT_w:
3937 797142 : case OPT_L:
3938 797142 : case OPT_I:
3939 797142 : case OPT_SPECIAL_unknown:
3940 797142 : case OPT_SPECIAL_ignore:
3941 797142 : case OPT_SPECIAL_warn_removed:
3942 797142 : case OPT_SPECIAL_program_name:
3943 797142 : case OPT_SPECIAL_input_file:
3944 797142 : case OPT_grecord_gcc_switches:
3945 797142 : case OPT_frecord_gcc_switches:
3946 797142 : case OPT__output_pch:
3947 797142 : case OPT_fdiagnostics_show_highlight_colors:
3948 797142 : case OPT_fdiagnostics_show_location_:
3949 797142 : case OPT_fdiagnostics_show_option:
3950 797142 : case OPT_fdiagnostics_show_caret:
3951 797142 : case OPT_fdiagnostics_show_event_links:
3952 797142 : case OPT_fdiagnostics_show_labels:
3953 797142 : case OPT_fdiagnostics_show_line_numbers:
3954 797142 : case OPT_fdiagnostics_color_:
3955 797142 : case OPT_fdiagnostics_format_:
3956 797142 : case OPT_fdiagnostics_show_nesting:
3957 797142 : case OPT_fdiagnostics_show_nesting_locations:
3958 797142 : case OPT_fdiagnostics_show_nesting_levels:
3959 797142 : case OPT_fverbose_asm:
3960 797142 : case OPT____:
3961 797142 : case OPT__sysroot_:
3962 797142 : case OPT_nostdinc:
3963 797142 : case OPT_nostdinc__:
3964 797142 : case OPT_fpreprocessed:
3965 797142 : case OPT_fltrans_output_list_:
3966 797142 : case OPT_fresolution_:
3967 797142 : case OPT_fdebug_prefix_map_:
3968 797142 : case OPT_fmacro_prefix_map_:
3969 797142 : case OPT_ffile_prefix_map_:
3970 797142 : case OPT_fprofile_prefix_map_:
3971 797142 : case OPT_fcanon_prefix_map:
3972 797142 : case OPT_fcompare_debug:
3973 797142 : case OPT_fchecking:
3974 797142 : case OPT_fchecking_:
3975 : /* Ignore these. */
3976 797142 : continue;
3977 66784 : case OPT_D:
3978 66784 : case OPT_U:
3979 66784 : if (startswith (options[i].arg, "_FORTIFY_SOURCE")
3980 66784 : && (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 66784 : 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 907890 : default:
3997 908662 : if (cl_options[options[i].opt_index].flags
3998 907890 : & CL_NO_DWARF_RECORD)
3999 772 : continue;
4000 907118 : gcc_checking_assert (options[i].canonical_option[0][0] == '-');
4001 907118 : switch (options[i].canonical_option[0][1])
4002 : {
4003 272054 : case 'M':
4004 272054 : case 'i':
4005 272054 : case 'W':
4006 272054 : continue;
4007 358892 : case 'f':
4008 358892 : if (strncmp (options[i].canonical_option[0] + 2,
4009 : "dump", 4) == 0)
4010 1772 : continue;
4011 : break;
4012 : default:
4013 : break;
4014 : }
4015 633292 : switches.safe_push (options[i].orig_option_with_args_text);
4016 633292 : len += strlen (options[i].orig_option_with_args_text) + 1;
4017 633292 : break;
4018 863926 : }
4019 :
4020 52609 : options_string = XNEWVEC (char, len + 1);
4021 52609 : tail = options_string;
4022 :
4023 52609 : unsigned i;
4024 738510 : FOR_EACH_VEC_ELT (switches, i, p)
4025 : {
4026 633292 : len = strlen (p);
4027 633292 : memcpy (tail, p, len);
4028 633292 : tail += len;
4029 633292 : if (i != switches.length () - 1)
4030 : {
4031 580683 : *tail = ' ';
4032 580683 : ++tail;
4033 : }
4034 : }
4035 :
4036 52609 : *tail = '\0';
4037 52609 : return options_string;
4038 52609 : }
4039 :
4040 : /* Return a heap allocated producer string including command line options. */
4041 :
4042 : char *
4043 52598 : gen_producer_string (const char *language_string, cl_decoded_option *options,
4044 : unsigned int options_count)
4045 : {
4046 52598 : char *cmdline = gen_command_line_string (options, options_count);
4047 52598 : char *combined = concat (language_string, " ", version_string, " ",
4048 : cmdline, NULL);
4049 52598 : free (cmdline);
4050 52598 : 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 10216 : for (unsigned i = 0; i < cl_options_count; ++i)
4095 10212 : if (cl_options[i].var_type == CLVC_ENUM
4096 360 : && 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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