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2772ef3e | 1 | /* Command line option handling. |
23a5b65a | 2 | Copyright (C) 2002-2014 Free Software Foundation, Inc. |
2772ef3e NB |
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 | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
2772ef3e NB |
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 | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
2772ef3e NB |
20 | |
21 | #include "config.h" | |
22 | #include "system.h" | |
cf03fd63 | 23 | #include "intl.h" |
2772ef3e | 24 | #include "coretypes.h" |
7d5a5747 MLI |
25 | #include "opts.h" |
26 | #include "options.h" | |
88a00ef7 | 27 | #include "tm.h" /* For STACK_CHECK_BUILTIN, |
0df226a4 JM |
28 | STACK_CHECK_STATIC_BUILTIN, DEFAULT_GDB_EXTENSIONS, |
29 | DWARF2_DEBUGGING_INFO and DBX_DEBUGGING_INFO. */ | |
d7b42618 | 30 | #include "flags.h" |
903caebf | 31 | #include "params.h" |
de32c0cb | 32 | #include "diagnostic.h" |
4b84d650 | 33 | #include "diagnostic-color.h" |
5f0f4a3b | 34 | #include "opts-diagnostic.h" |
88a00ef7 | 35 | #include "insn-attr-common.h" |
677f3fa8 | 36 | #include "common/common-target.h" |
2772ef3e | 37 | |
65d4f2cd MLI |
38 | static void set_Wstrict_aliasing (struct gcc_options *opts, int onoff); |
39 | ||
a7d0d30f JM |
40 | /* Indexed by enum debug_info_type. */ |
41 | const char *const debug_type_names[] = | |
42 | { | |
43 | "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" | |
44 | }; | |
45 | ||
39ef6592 LC |
46 | /* Parse the -femit-struct-debug-detailed option value |
47 | and set the flag variables. */ | |
48 | ||
49 | #define MATCH( prefix, string ) \ | |
50 | ((strncmp (prefix, string, sizeof prefix - 1) == 0) \ | |
51 | ? ((string += sizeof prefix - 1), 1) : 0) | |
52 | ||
53 | void | |
299404a1 JM |
54 | set_struct_debug_option (struct gcc_options *opts, location_t loc, |
55 | const char *spec) | |
39ef6592 LC |
56 | { |
57 | /* various labels for comparison */ | |
0576d21f JM |
58 | static const char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:"; |
59 | static const char ord_lbl[] = "ord:", gen_lbl[] = "gen:"; | |
60 | static const char none_lbl[] = "none", any_lbl[] = "any"; | |
61 | static const char base_lbl[] = "base", sys_lbl[] = "sys"; | |
39ef6592 LC |
62 | |
63 | enum debug_struct_file files = DINFO_STRUCT_FILE_ANY; | |
64 | /* Default is to apply to as much as possible. */ | |
65 | enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS; | |
66 | int ord = 1, gen = 1; | |
67 | ||
68 | /* What usage? */ | |
69 | if (MATCH (dfn_lbl, spec)) | |
70 | usage = DINFO_USAGE_DFN; | |
71 | else if (MATCH (dir_lbl, spec)) | |
72 | usage = DINFO_USAGE_DIR_USE; | |
73 | else if (MATCH (ind_lbl, spec)) | |
74 | usage = DINFO_USAGE_IND_USE; | |
75 | ||
76 | /* Generics or not? */ | |
77 | if (MATCH (ord_lbl, spec)) | |
78 | gen = 0; | |
79 | else if (MATCH (gen_lbl, spec)) | |
80 | ord = 0; | |
81 | ||
82 | /* What allowable environment? */ | |
83 | if (MATCH (none_lbl, spec)) | |
84 | files = DINFO_STRUCT_FILE_NONE; | |
85 | else if (MATCH (any_lbl, spec)) | |
86 | files = DINFO_STRUCT_FILE_ANY; | |
87 | else if (MATCH (sys_lbl, spec)) | |
88 | files = DINFO_STRUCT_FILE_SYS; | |
89 | else if (MATCH (base_lbl, spec)) | |
90 | files = DINFO_STRUCT_FILE_BASE; | |
91 | else | |
299404a1 JM |
92 | error_at (loc, |
93 | "argument %qs to %<-femit-struct-debug-detailed%> " | |
94 | "not recognized", | |
95 | spec); | |
39ef6592 LC |
96 | |
97 | /* Effect the specification. */ | |
98 | if (usage == DINFO_USAGE_NUM_ENUMS) | |
99 | { | |
100 | if (ord) | |
101 | { | |
69ccdddb JM |
102 | opts->x_debug_struct_ordinary[DINFO_USAGE_DFN] = files; |
103 | opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files; | |
104 | opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE] = files; | |
39ef6592 LC |
105 | } |
106 | if (gen) | |
107 | { | |
69ccdddb JM |
108 | opts->x_debug_struct_generic[DINFO_USAGE_DFN] = files; |
109 | opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE] = files; | |
110 | opts->x_debug_struct_generic[DINFO_USAGE_IND_USE] = files; | |
39ef6592 LC |
111 | } |
112 | } | |
113 | else | |
114 | { | |
115 | if (ord) | |
69ccdddb | 116 | opts->x_debug_struct_ordinary[usage] = files; |
39ef6592 | 117 | if (gen) |
69ccdddb | 118 | opts->x_debug_struct_generic[usage] = files; |
39ef6592 LC |
119 | } |
120 | ||
121 | if (*spec == ',') | |
299404a1 | 122 | set_struct_debug_option (opts, loc, spec+1); |
39ef6592 LC |
123 | else |
124 | { | |
125 | /* No more -femit-struct-debug-detailed specifications. | |
126 | Do final checks. */ | |
127 | if (*spec != '\0') | |
299404a1 JM |
128 | error_at (loc, |
129 | "argument %qs to %<-femit-struct-debug-detailed%> unknown", | |
130 | spec); | |
69ccdddb JM |
131 | if (opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE] |
132 | < opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE] | |
133 | || opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE] | |
134 | < opts->x_debug_struct_generic[DINFO_USAGE_IND_USE]) | |
299404a1 JM |
135 | error_at (loc, |
136 | "%<-femit-struct-debug-detailed=dir:...%> must allow " | |
137 | "at least as much as " | |
138 | "%<-femit-struct-debug-detailed=ind:...%>"); | |
39ef6592 LC |
139 | } |
140 | } | |
141 | ||
c98cd5bf JM |
142 | /* Strip off a legitimate source ending from the input string NAME of |
143 | length LEN. Rather than having to know the names used by all of | |
144 | our front ends, we strip off an ending of a period followed by | |
145 | up to five characters. (Java uses ".class".) */ | |
146 | ||
147 | void | |
148 | strip_off_ending (char *name, int len) | |
149 | { | |
150 | int i; | |
151 | for (i = 2; i < 6 && len > i; i++) | |
152 | { | |
153 | if (name[len - i] == '.') | |
154 | { | |
155 | name[len - i] = '\0'; | |
156 | break; | |
157 | } | |
158 | } | |
159 | } | |
160 | ||
39ef6592 LC |
161 | /* Find the base name of a path, stripping off both directories and |
162 | a single final extension. */ | |
69ccdddb | 163 | int |
39ef6592 LC |
164 | base_of_path (const char *path, const char **base_out) |
165 | { | |
166 | const char *base = path; | |
167 | const char *dot = 0; | |
168 | const char *p = path; | |
169 | char c = *p; | |
170 | while (c) | |
171 | { | |
c3284718 | 172 | if (IS_DIR_SEPARATOR (c)) |
39ef6592 LC |
173 | { |
174 | base = p + 1; | |
175 | dot = 0; | |
176 | } | |
177 | else if (c == '.') | |
178 | dot = p; | |
179 | c = *++p; | |
180 | } | |
181 | if (!dot) | |
182 | dot = p; | |
183 | *base_out = base; | |
184 | return dot - base; | |
185 | } | |
186 | ||
2cc98056 NB |
187 | /* What to print when a switch has no documentation. */ |
188 | static const char undocumented_msg[] = N_("This switch lacks documentation"); | |
189 | ||
8d5a7d1f | 190 | typedef char *char_p; /* For DEF_VEC_P. */ |
8d5a7d1f | 191 | |
48476d13 | 192 | static void handle_param (struct gcc_options *opts, |
299404a1 JM |
193 | struct gcc_options *opts_set, location_t loc, |
194 | const char *carg); | |
df38ffef | 195 | static void set_debug_level (enum debug_info_type type, int extended, |
0576d21f | 196 | const char *arg, struct gcc_options *opts, |
299404a1 JM |
197 | struct gcc_options *opts_set, |
198 | location_t loc); | |
d5478783 | 199 | static void set_fast_math_flags (struct gcc_options *opts, int set); |
299404a1 JM |
200 | static void decode_d_option (const char *arg, struct gcc_options *opts, |
201 | location_t loc, diagnostic_context *dc); | |
d5478783 JM |
202 | static void set_unsafe_math_optimizations_flags (struct gcc_options *opts, |
203 | int set); | |
a4d8c676 JM |
204 | static void enable_warning_as_error (const char *arg, int value, |
205 | unsigned int lang_mask, | |
206 | const struct cl_option_handlers *handlers, | |
c5fa0890 JM |
207 | struct gcc_options *opts, |
208 | struct gcc_options *opts_set, | |
a4d8c676 JM |
209 | location_t loc, |
210 | diagnostic_context *dc); | |
2772ef3e | 211 | |
5f20c657 JM |
212 | /* Handle a back-end option; arguments and return value as for |
213 | handle_option. */ | |
2772ef3e | 214 | |
c98cd5bf | 215 | bool |
46625112 | 216 | target_handle_option (struct gcc_options *opts, |
d4d24ba4 | 217 | struct gcc_options *opts_set, |
46625112 | 218 | const struct cl_decoded_option *decoded, |
481e1176 | 219 | unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, |
96e45421 | 220 | location_t loc, |
d5478783 JM |
221 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, |
222 | diagnostic_context *dc) | |
5f20c657 | 223 | { |
d5478783 | 224 | gcc_assert (dc == global_dc); |
5f20c657 | 225 | gcc_assert (kind == DK_UNSPECIFIED); |
677f3fa8 | 226 | return targetm_common.handle_option (opts, opts_set, decoded, loc); |
2772ef3e | 227 | } |
d7b42618 | 228 | |
1ebc7e68 | 229 | /* Add comma-separated strings to a char_p vector. */ |
8d5a7d1f ILT |
230 | |
231 | static void | |
6a1f6c9c | 232 | add_comma_separated_to_vector (void **pvec, const char *arg) |
8d5a7d1f ILT |
233 | { |
234 | char *tmp; | |
235 | char *r; | |
236 | char *w; | |
237 | char *token_start; | |
9771b263 DN |
238 | vec<char_p> *v = (vec<char_p> *) *pvec; |
239 | ||
240 | vec_check_alloc (v, 1); | |
8d5a7d1f ILT |
241 | |
242 | /* We never free this string. */ | |
243 | tmp = xstrdup (arg); | |
244 | ||
245 | r = tmp; | |
246 | w = tmp; | |
247 | token_start = tmp; | |
248 | ||
249 | while (*r != '\0') | |
250 | { | |
251 | if (*r == ',') | |
252 | { | |
253 | *w++ = '\0'; | |
254 | ++r; | |
9771b263 | 255 | v->safe_push (token_start); |
8d5a7d1f ILT |
256 | token_start = w; |
257 | } | |
258 | if (*r == '\\' && r[1] == ',') | |
259 | { | |
260 | *w++ = ','; | |
261 | r += 2; | |
262 | } | |
263 | else | |
264 | *w++ = *r++; | |
265 | } | |
266 | if (*token_start != '\0') | |
9771b263 | 267 | v->safe_push (token_start); |
8d5a7d1f | 268 | |
9771b263 | 269 | *pvec = v; |
8d5a7d1f ILT |
270 | } |
271 | ||
a75bfaa6 JM |
272 | /* Initialize OPTS and OPTS_SET before using them in parsing options. */ |
273 | ||
274 | void | |
275 | init_options_struct (struct gcc_options *opts, struct gcc_options *opts_set) | |
276 | { | |
48476d13 JM |
277 | size_t num_params = get_num_compiler_params (); |
278 | ||
dc357798 JJ |
279 | gcc_obstack_init (&opts_obstack); |
280 | ||
a75bfaa6 | 281 | *opts = global_options_init; |
bf7b5747 ST |
282 | |
283 | if (opts_set) | |
284 | memset (opts_set, 0, sizeof (*opts_set)); | |
a75bfaa6 | 285 | |
48476d13 | 286 | opts->x_param_values = XNEWVEC (int, num_params); |
bf7b5747 ST |
287 | |
288 | if (opts_set) | |
289 | opts_set->x_param_values = XCNEWVEC (int, num_params); | |
290 | ||
48476d13 JM |
291 | init_param_values (opts->x_param_values); |
292 | ||
a75bfaa6 JM |
293 | /* Initialize whether `char' is signed. */ |
294 | opts->x_flag_signed_char = DEFAULT_SIGNED_CHAR; | |
295 | /* Set this to a special "uninitialized" value. The actual default | |
296 | is set after target options have been processed. */ | |
297 | opts->x_flag_short_enums = 2; | |
298 | ||
677f3fa8 | 299 | /* Initialize target_flags before default_options_optimization |
a75bfaa6 | 300 | so the latter can modify it. */ |
677f3fa8 | 301 | opts->x_target_flags = targetm_common.default_target_flags; |
a75bfaa6 JM |
302 | |
303 | /* Some targets have ABI-specified unwind tables. */ | |
677f3fa8 | 304 | opts->x_flag_unwind_tables = targetm_common.unwind_tables_default; |
7e4aae92 JM |
305 | |
306 | /* Some targets have other target-specific initialization. */ | |
677f3fa8 | 307 | targetm_common.option_init_struct (opts); |
a75bfaa6 JM |
308 | } |
309 | ||
3020190e | 310 | /* If indicated by the optimization level LEVEL (-Os if SIZE is set, |
bf7a7185 RG |
311 | -Ofast if FAST is set, -Og if DEBUG is set), apply the option DEFAULT_OPT |
312 | to OPTS and OPTS_SET, diagnostic context DC, location LOC, with language | |
313 | mask LANG_MASK and option handlers HANDLERS. */ | |
3020190e JM |
314 | |
315 | static void | |
316 | maybe_default_option (struct gcc_options *opts, | |
317 | struct gcc_options *opts_set, | |
318 | const struct default_options *default_opt, | |
bf7a7185 | 319 | int level, bool size, bool fast, bool debug, |
3020190e JM |
320 | unsigned int lang_mask, |
321 | const struct cl_option_handlers *handlers, | |
a4d8c676 | 322 | location_t loc, |
3020190e JM |
323 | diagnostic_context *dc) |
324 | { | |
325 | const struct cl_option *option = &cl_options[default_opt->opt_index]; | |
326 | bool enabled; | |
327 | ||
328 | if (size) | |
329 | gcc_assert (level == 2); | |
330 | if (fast) | |
331 | gcc_assert (level == 3); | |
bf7a7185 RG |
332 | if (debug) |
333 | gcc_assert (level == 1); | |
3020190e JM |
334 | |
335 | switch (default_opt->levels) | |
336 | { | |
337 | case OPT_LEVELS_ALL: | |
338 | enabled = true; | |
339 | break; | |
340 | ||
341 | case OPT_LEVELS_0_ONLY: | |
342 | enabled = (level == 0); | |
343 | break; | |
344 | ||
345 | case OPT_LEVELS_1_PLUS: | |
346 | enabled = (level >= 1); | |
347 | break; | |
348 | ||
349 | case OPT_LEVELS_1_PLUS_SPEED_ONLY: | |
bf7a7185 RG |
350 | enabled = (level >= 1 && !size && !debug); |
351 | break; | |
352 | ||
353 | case OPT_LEVELS_1_PLUS_NOT_DEBUG: | |
354 | enabled = (level >= 1 && !debug); | |
3020190e JM |
355 | break; |
356 | ||
357 | case OPT_LEVELS_2_PLUS: | |
358 | enabled = (level >= 2); | |
359 | break; | |
360 | ||
361 | case OPT_LEVELS_2_PLUS_SPEED_ONLY: | |
bf7a7185 | 362 | enabled = (level >= 2 && !size && !debug); |
3020190e JM |
363 | break; |
364 | ||
365 | case OPT_LEVELS_3_PLUS: | |
366 | enabled = (level >= 3); | |
367 | break; | |
368 | ||
369 | case OPT_LEVELS_3_PLUS_AND_SIZE: | |
370 | enabled = (level >= 3 || size); | |
371 | break; | |
372 | ||
373 | case OPT_LEVELS_SIZE: | |
374 | enabled = size; | |
375 | break; | |
376 | ||
377 | case OPT_LEVELS_FAST: | |
378 | enabled = fast; | |
379 | break; | |
380 | ||
381 | case OPT_LEVELS_NONE: | |
382 | default: | |
383 | gcc_unreachable (); | |
384 | } | |
385 | ||
386 | if (enabled) | |
387 | handle_generated_option (opts, opts_set, default_opt->opt_index, | |
388 | default_opt->arg, default_opt->value, | |
a4d8c676 JM |
389 | lang_mask, DK_UNSPECIFIED, loc, |
390 | handlers, dc); | |
3020190e | 391 | else if (default_opt->arg == NULL |
300d83d9 | 392 | && !option->cl_reject_negative) |
3020190e JM |
393 | handle_generated_option (opts, opts_set, default_opt->opt_index, |
394 | default_opt->arg, !default_opt->value, | |
a4d8c676 JM |
395 | lang_mask, DK_UNSPECIFIED, loc, |
396 | handlers, dc); | |
3020190e JM |
397 | } |
398 | ||
399 | /* As indicated by the optimization level LEVEL (-Os if SIZE is set, | |
400 | -Ofast if FAST is set), apply the options in array DEFAULT_OPTS to | |
a4d8c676 JM |
401 | OPTS and OPTS_SET, diagnostic context DC, location LOC, with |
402 | language mask LANG_MASK and option handlers HANDLERS. */ | |
3020190e JM |
403 | |
404 | static void | |
405 | maybe_default_options (struct gcc_options *opts, | |
406 | struct gcc_options *opts_set, | |
407 | const struct default_options *default_opts, | |
bf7a7185 | 408 | int level, bool size, bool fast, bool debug, |
3020190e JM |
409 | unsigned int lang_mask, |
410 | const struct cl_option_handlers *handlers, | |
a4d8c676 | 411 | location_t loc, |
3020190e JM |
412 | diagnostic_context *dc) |
413 | { | |
414 | size_t i; | |
415 | ||
416 | for (i = 0; default_opts[i].levels != OPT_LEVELS_NONE; i++) | |
417 | maybe_default_option (opts, opts_set, &default_opts[i], | |
bf7a7185 RG |
418 | level, size, fast, debug, |
419 | lang_mask, handlers, loc, dc); | |
3020190e JM |
420 | } |
421 | ||
422 | /* Table of options enabled by default at different levels. */ | |
423 | ||
424 | static const struct default_options default_options_table[] = | |
425 | { | |
426 | /* -O1 optimizations. */ | |
427 | { OPT_LEVELS_1_PLUS, OPT_fdefer_pop, NULL, 1 }, | |
428 | #ifdef DELAY_SLOTS | |
429 | { OPT_LEVELS_1_PLUS, OPT_fdelayed_branch, NULL, 1 }, | |
430 | #endif | |
431 | { OPT_LEVELS_1_PLUS, OPT_fguess_branch_probability, NULL, 1 }, | |
432 | { OPT_LEVELS_1_PLUS, OPT_fcprop_registers, NULL, 1 }, | |
433 | { OPT_LEVELS_1_PLUS, OPT_fforward_propagate, NULL, 1 }, | |
eeee2277 JY |
434 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion, NULL, 1 }, |
435 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion2, NULL, 1 }, | |
3020190e JM |
436 | { OPT_LEVELS_1_PLUS, OPT_fipa_pure_const, NULL, 1 }, |
437 | { OPT_LEVELS_1_PLUS, OPT_fipa_reference, NULL, 1 }, | |
438 | { OPT_LEVELS_1_PLUS, OPT_fipa_profile, NULL, 1 }, | |
439 | { OPT_LEVELS_1_PLUS, OPT_fmerge_constants, NULL, 1 }, | |
484db665 | 440 | { OPT_LEVELS_1_PLUS, OPT_fshrink_wrap, NULL, 1 }, |
3020190e JM |
441 | { OPT_LEVELS_1_PLUS, OPT_fsplit_wide_types, NULL, 1 }, |
442 | { OPT_LEVELS_1_PLUS, OPT_ftree_ccp, NULL, 1 }, | |
78d22941 | 443 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_bit_ccp, NULL, 1 }, |
3020190e JM |
444 | { OPT_LEVELS_1_PLUS, OPT_ftree_dce, NULL, 1 }, |
445 | { OPT_LEVELS_1_PLUS, OPT_ftree_dominator_opts, NULL, 1 }, | |
446 | { OPT_LEVELS_1_PLUS, OPT_ftree_dse, NULL, 1 }, | |
447 | { OPT_LEVELS_1_PLUS, OPT_ftree_ter, NULL, 1 }, | |
bf7a7185 | 448 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_sra, NULL, 1 }, |
3020190e JM |
449 | { OPT_LEVELS_1_PLUS, OPT_ftree_copyrename, NULL, 1 }, |
450 | { OPT_LEVELS_1_PLUS, OPT_ftree_fre, NULL, 1 }, | |
451 | { OPT_LEVELS_1_PLUS, OPT_ftree_copy_prop, NULL, 1 }, | |
452 | { OPT_LEVELS_1_PLUS, OPT_ftree_sink, NULL, 1 }, | |
453 | { OPT_LEVELS_1_PLUS, OPT_ftree_ch, NULL, 1 }, | |
454 | { OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 }, | |
e692f276 | 455 | { OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 }, |
75cfe445 | 456 | { OPT_LEVELS_1_PLUS, OPT_ftree_slsr, NULL, 1 }, |
14379e66 RB |
457 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fbranch_count_reg, NULL, 1 }, |
458 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fmove_loop_invariants, NULL, 1 }, | |
459 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_pta, NULL, 1 }, | |
68f6df73 | 460 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fssa_phiopt, NULL, 1 }, |
3020190e JM |
461 | |
462 | /* -O2 optimizations. */ | |
463 | { OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 }, | |
464 | { OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 }, | |
465 | { OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 }, | |
466 | { OPT_LEVELS_2_PLUS, OPT_fthread_jumps, NULL, 1 }, | |
467 | { OPT_LEVELS_2_PLUS, OPT_fcrossjumping, NULL, 1 }, | |
468 | { OPT_LEVELS_2_PLUS, OPT_foptimize_sibling_calls, NULL, 1 }, | |
469 | { OPT_LEVELS_2_PLUS, OPT_fcse_follow_jumps, NULL, 1 }, | |
470 | { OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 }, | |
471 | { OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 }, | |
472 | { OPT_LEVELS_2_PLUS, OPT_frerun_cse_after_loop, NULL, 1 }, | |
473 | { OPT_LEVELS_2_PLUS, OPT_fcaller_saves, NULL, 1 }, | |
474 | { OPT_LEVELS_2_PLUS, OPT_fpeephole2, NULL, 1 }, | |
475 | #ifdef INSN_SCHEDULING | |
476 | /* Only run the pre-regalloc scheduling pass if optimizing for speed. */ | |
477 | { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fschedule_insns, NULL, 1 }, | |
478 | { OPT_LEVELS_2_PLUS, OPT_fschedule_insns2, NULL, 1 }, | |
479 | #endif | |
3020190e JM |
480 | { OPT_LEVELS_2_PLUS, OPT_fstrict_aliasing, NULL, 1 }, |
481 | { OPT_LEVELS_2_PLUS, OPT_fstrict_overflow, NULL, 1 }, | |
482 | { OPT_LEVELS_2_PLUS, OPT_freorder_blocks, NULL, 1 }, | |
483 | { OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 }, | |
484 | { OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 }, | |
485 | { OPT_LEVELS_2_PLUS, OPT_ftree_builtin_call_dce, NULL, 1 }, | |
486 | { OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 }, | |
487 | { OPT_LEVELS_2_PLUS, OPT_ftree_switch_conversion, NULL, 1 }, | |
488 | { OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 }, | |
05842ff5 | 489 | { OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 }, |
bbc9396b | 490 | { OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 }, |
3020190e JM |
491 | { OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 }, |
492 | { OPT_LEVELS_2_PLUS, OPT_falign_loops, NULL, 1 }, | |
493 | { OPT_LEVELS_2_PLUS, OPT_falign_jumps, NULL, 1 }, | |
494 | { OPT_LEVELS_2_PLUS, OPT_falign_labels, NULL, 1 }, | |
495 | { OPT_LEVELS_2_PLUS, OPT_falign_functions, NULL, 1 }, | |
c9e93168 | 496 | { OPT_LEVELS_2_PLUS, OPT_ftree_tail_merge, NULL, 1 }, |
d6d11272 | 497 | { OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP }, |
d8878031 | 498 | { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_foptimize_strlen, NULL, 1 }, |
372a6eb8 | 499 | { OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 }, |
b84d4347 | 500 | { OPT_LEVELS_2_PLUS, OPT_fipa_icf, NULL, 1 }, |
ae93744d | 501 | { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 }, |
5c989bbf | 502 | { OPT_LEVELS_2_PLUS, OPT_fuse_caller_save, NULL, 1 }, |
d9cf932c | 503 | { OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 }, |
3020190e JM |
504 | |
505 | /* -O3 optimizations. */ | |
506 | { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 }, | |
507 | { OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 }, | |
508 | /* Inlining of functions reducing size is a good idea with -Os | |
509 | regardless of them being declared inline. */ | |
510 | { OPT_LEVELS_3_PLUS_AND_SIZE, OPT_finline_functions, NULL, 1 }, | |
bf7a7185 | 511 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_finline_functions_called_once, NULL, 1 }, |
3020190e JM |
512 | { OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 }, |
513 | { OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 }, | |
ea0f3e87 XDL |
514 | { OPT_LEVELS_3_PLUS, OPT_ftree_loop_vectorize, NULL, 1 }, |
515 | { OPT_LEVELS_3_PLUS, OPT_ftree_slp_vectorize, NULL, 1 }, | |
d6d11272 | 516 | { OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC }, |
3020190e | 517 | { OPT_LEVELS_3_PLUS, OPT_fipa_cp_clone, NULL, 1 }, |
fa06ad0d | 518 | { OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 }, |
3020190e JM |
519 | |
520 | /* -Ofast adds optimizations to -O3. */ | |
521 | { OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 }, | |
522 | ||
523 | { OPT_LEVELS_NONE, 0, NULL, 0 } | |
524 | }; | |
525 | ||
a75bfaa6 JM |
526 | /* Default the options in OPTS and OPTS_SET based on the optimization |
527 | settings in DECODED_OPTIONS and DECODED_OPTIONS_COUNT. */ | |
c98cd5bf | 528 | void |
a75bfaa6 JM |
529 | default_options_optimization (struct gcc_options *opts, |
530 | struct gcc_options *opts_set, | |
531 | struct cl_decoded_option *decoded_options, | |
3020190e | 532 | unsigned int decoded_options_count, |
a4d8c676 | 533 | location_t loc, |
3020190e JM |
534 | unsigned int lang_mask, |
535 | const struct cl_option_handlers *handlers, | |
536 | diagnostic_context *dc) | |
a75bfaa6 JM |
537 | { |
538 | unsigned int i; | |
ab442df7 | 539 | int opt2; |
9756310a NB |
540 | |
541 | /* Scan to see what optimization level has been specified. That will | |
542 | determine the default value of many flags. */ | |
a75bfaa6 | 543 | for (i = 1; i < decoded_options_count; i++) |
9756310a | 544 | { |
a75bfaa6 | 545 | struct cl_decoded_option *opt = &decoded_options[i]; |
6e2f1956 | 546 | switch (opt->opt_index) |
9756310a | 547 | { |
6e2f1956 JM |
548 | case OPT_O: |
549 | if (*opt->arg == '\0') | |
be6d3f0e | 550 | { |
3020190e JM |
551 | opts->x_optimize = 1; |
552 | opts->x_optimize_size = 0; | |
0a8134ca | 553 | opts->x_optimize_fast = 0; |
bf7a7185 | 554 | opts->x_optimize_debug = 0; |
9756310a NB |
555 | } |
556 | else | |
557 | { | |
6e2f1956 JM |
558 | const int optimize_val = integral_argument (opt->arg); |
559 | if (optimize_val == -1) | |
33879b9f MP |
560 | error_at (loc, "argument to %<-O%> should be a non-negative " |
561 | "integer, %<g%>, %<s%> or %<fast%>"); | |
6e2f1956 | 562 | else |
9756310a | 563 | { |
3020190e JM |
564 | opts->x_optimize = optimize_val; |
565 | if ((unsigned int) opts->x_optimize > 255) | |
566 | opts->x_optimize = 255; | |
567 | opts->x_optimize_size = 0; | |
0a8134ca | 568 | opts->x_optimize_fast = 0; |
bf7a7185 | 569 | opts->x_optimize_debug = 0; |
9756310a NB |
570 | } |
571 | } | |
6e2f1956 JM |
572 | break; |
573 | ||
574 | case OPT_Os: | |
3020190e | 575 | opts->x_optimize_size = 1; |
6e2f1956 JM |
576 | |
577 | /* Optimizing for size forces optimize to be 2. */ | |
3020190e | 578 | opts->x_optimize = 2; |
0a8134ca | 579 | opts->x_optimize_fast = 0; |
bf7a7185 | 580 | opts->x_optimize_debug = 0; |
6e2f1956 JM |
581 | break; |
582 | ||
583 | case OPT_Ofast: | |
584 | /* -Ofast only adds flags to -O3. */ | |
3020190e JM |
585 | opts->x_optimize_size = 0; |
586 | opts->x_optimize = 3; | |
0a8134ca | 587 | opts->x_optimize_fast = 1; |
bf7a7185 RG |
588 | opts->x_optimize_debug = 0; |
589 | break; | |
590 | ||
591 | case OPT_Og: | |
592 | /* -Og selects optimization level 1. */ | |
593 | opts->x_optimize_size = 0; | |
594 | opts->x_optimize = 1; | |
595 | opts->x_optimize_fast = 0; | |
596 | opts->x_optimize_debug = 1; | |
6e2f1956 JM |
597 | break; |
598 | ||
599 | default: | |
600 | /* Ignore other options in this prescan. */ | |
601 | break; | |
9756310a NB |
602 | } |
603 | } | |
b8698a0f | 604 | |
3020190e JM |
605 | maybe_default_options (opts, opts_set, default_options_table, |
606 | opts->x_optimize, opts->x_optimize_size, | |
bf7a7185 RG |
607 | opts->x_optimize_fast, opts->x_optimize_debug, |
608 | lang_mask, handlers, loc, dc); | |
3020190e JM |
609 | |
610 | /* -O2 param settings. */ | |
611 | opt2 = (opts->x_optimize >= 2); | |
116cb604 | 612 | |
ab442df7 | 613 | /* Track fields in field-sensitive alias analysis. */ |
48476d13 JM |
614 | maybe_set_param_value |
615 | (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE, | |
616 | opt2 ? 100 : default_param_value (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE), | |
617 | opts->x_param_values, opts_set->x_param_values); | |
e9e0aa2c | 618 | |
b1fb9f56 | 619 | /* For -O1 only do loop invariant motion for very small loops. */ |
48476d13 JM |
620 | maybe_set_param_value |
621 | (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP, | |
622 | opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000, | |
623 | opts->x_param_values, opts_set->x_param_values); | |
b1fb9f56 | 624 | |
680a5a7c MJ |
625 | /* At -Ofast, allow store motion to introduce potential race conditions. */ |
626 | maybe_set_param_value | |
627 | (PARAM_ALLOW_STORE_DATA_RACES, | |
628 | opts->x_optimize_fast ? 1 | |
629 | : default_param_value (PARAM_ALLOW_STORE_DATA_RACES), | |
630 | opts->x_param_values, opts_set->x_param_values); | |
631 | ||
3020190e JM |
632 | if (opts->x_optimize_size) |
633 | /* We want to crossjump as much as possible. */ | |
634 | maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, 1, | |
635 | opts->x_param_values, opts_set->x_param_values); | |
ab442df7 | 636 | else |
128dc8e2 | 637 | maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, |
48476d13 JM |
638 | default_param_value (PARAM_MIN_CROSSJUMP_INSNS), |
639 | opts->x_param_values, opts_set->x_param_values); | |
f736cb3e | 640 | |
b30e733a RB |
641 | /* Restrict the amount of work combine does at -Og while retaining |
642 | most of its useful transforms. */ | |
643 | if (opts->x_optimize_debug) | |
644 | maybe_set_param_value (PARAM_MAX_COMBINE_INSNS, 2, | |
645 | opts->x_param_values, opts_set->x_param_values); | |
646 | ||
a75bfaa6 | 647 | /* Allow default optimizations to be specified on a per-machine basis. */ |
3020190e | 648 | maybe_default_options (opts, opts_set, |
677f3fa8 | 649 | targetm_common.option_optimization_table, |
3020190e | 650 | opts->x_optimize, opts->x_optimize_size, |
bf7a7185 RG |
651 | opts->x_optimize_fast, opts->x_optimize_debug, |
652 | lang_mask, handlers, loc, dc); | |
a75bfaa6 JM |
653 | } |
654 | ||
299404a1 JM |
655 | /* After all options at LOC have been read into OPTS and OPTS_SET, |
656 | finalize settings of those options and diagnose incompatible | |
a75bfaa6 | 657 | combinations. */ |
c98cd5bf | 658 | void |
299404a1 JM |
659 | finish_options (struct gcc_options *opts, struct gcc_options *opts_set, |
660 | location_t loc) | |
a75bfaa6 | 661 | { |
a75bfaa6 JM |
662 | enum unwind_info_type ui_except; |
663 | ||
91035653 JJ |
664 | if (opts->x_dump_base_name |
665 | && ! IS_ABSOLUTE_PATH (opts->x_dump_base_name) | |
666 | && ! opts->x_dump_base_name_prefixed) | |
e71da632 | 667 | { |
d5478783 JM |
668 | /* First try to make OPTS->X_DUMP_BASE_NAME relative to the |
669 | OPTS->X_DUMP_DIR_NAME directory. Then try to make | |
670 | OPTS->X_DUMP_BASE_NAME relative to the OPTS->X_AUX_BASE_NAME | |
671 | directory, typically the directory to contain the object | |
672 | file. */ | |
673 | if (opts->x_dump_dir_name) | |
dc357798 JJ |
674 | opts->x_dump_base_name = opts_concat (opts->x_dump_dir_name, |
675 | opts->x_dump_base_name, NULL); | |
dd3b31fb L |
676 | else if (opts->x_aux_base_name |
677 | && strcmp (opts->x_aux_base_name, HOST_BIT_BUCKET) != 0) | |
e71da632 | 678 | { |
d7fb0a6d L |
679 | const char *aux_base; |
680 | ||
d5478783 JM |
681 | base_of_path (opts->x_aux_base_name, &aux_base); |
682 | if (opts->x_aux_base_name != aux_base) | |
d7fb0a6d | 683 | { |
d5478783 | 684 | int dir_len = aux_base - opts->x_aux_base_name; |
dc357798 JJ |
685 | char *new_dump_base_name |
686 | = XOBNEWVEC (&opts_obstack, char, | |
687 | strlen (opts->x_dump_base_name) + dir_len + 1); | |
d7fb0a6d | 688 | |
d5478783 JM |
689 | /* Copy directory component from OPTS->X_AUX_BASE_NAME. */ |
690 | memcpy (new_dump_base_name, opts->x_aux_base_name, dir_len); | |
691 | /* Append existing OPTS->X_DUMP_BASE_NAME. */ | |
692 | strcpy (new_dump_base_name + dir_len, opts->x_dump_base_name); | |
693 | opts->x_dump_base_name = new_dump_base_name; | |
d7fb0a6d | 694 | } |
e71da632 | 695 | } |
91035653 | 696 | opts->x_dump_base_name_prefixed = true; |
e71da632 MH |
697 | } |
698 | ||
93a4f5e0 JJ |
699 | /* Handle related options for unit-at-a-time, toplevel-reorder, and |
700 | section-anchors. */ | |
d5478783 | 701 | if (!opts->x_flag_unit_at_a_time) |
57b08d04 | 702 | { |
d5478783 | 703 | if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors) |
299404a1 JM |
704 | error_at (loc, "section anchors must be disabled when unit-at-a-time " |
705 | "is disabled"); | |
d5478783 JM |
706 | opts->x_flag_section_anchors = 0; |
707 | if (opts->x_flag_toplevel_reorder == 1) | |
299404a1 JM |
708 | error_at (loc, "toplevel reorder must be disabled when unit-at-a-time " |
709 | "is disabled"); | |
d5478783 | 710 | opts->x_flag_toplevel_reorder = 0; |
57b08d04 | 711 | } |
7ea6b6cf | 712 | |
ee777b71 AH |
713 | if (opts->x_flag_tm && opts->x_flag_non_call_exceptions) |
714 | sorry ("transactional memory is not supported with non-call exceptions"); | |
715 | ||
5ffebee7 JJ |
716 | /* Unless the user has asked for section anchors, we disable toplevel |
717 | reordering at -O0 to disable transformations that might be surprising | |
718 | to end users and to get -fno-toplevel-reorder tested. */ | |
299404a1 | 719 | if (!opts->x_optimize |
d5478783 JM |
720 | && opts->x_flag_toplevel_reorder == 2 |
721 | && !(opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)) | |
93a4f5e0 | 722 | { |
d5478783 JM |
723 | opts->x_flag_toplevel_reorder = 0; |
724 | opts->x_flag_section_anchors = 0; | |
93a4f5e0 | 725 | } |
d5478783 | 726 | if (!opts->x_flag_toplevel_reorder) |
57b08d04 | 727 | { |
d5478783 | 728 | if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors) |
299404a1 JM |
729 | error_at (loc, "section anchors must be disabled when toplevel reorder" |
730 | " is disabled"); | |
d5478783 | 731 | opts->x_flag_section_anchors = 0; |
57b08d04 ST |
732 | } |
733 | ||
299404a1 | 734 | if (!opts->x_flag_opts_finished) |
ab442df7 | 735 | { |
d5478783 JM |
736 | if (opts->x_flag_pie) |
737 | opts->x_flag_pic = opts->x_flag_pie; | |
738 | if (opts->x_flag_pic && !opts->x_flag_pie) | |
739 | opts->x_flag_shlib = 1; | |
b294a75e | 740 | opts->x_flag_opts_finished = true; |
ab442df7 | 741 | } |
9756310a | 742 | |
299404a1 | 743 | if (opts->x_optimize == 0) |
9756310a NB |
744 | { |
745 | /* Inlining does not work if not optimizing, | |
746 | so force it not to be done. */ | |
d5478783 JM |
747 | opts->x_warn_inline = 0; |
748 | opts->x_flag_no_inline = 1; | |
9756310a NB |
749 | } |
750 | ||
750054a2 CT |
751 | /* The optimization to partition hot and cold basic blocks into separate |
752 | sections of the .o and executable files does not work (currently) | |
e395963f | 753 | with exception handling. This is because there is no support for |
d5478783 JM |
754 | generating unwind info. If opts->x_flag_exceptions is turned on |
755 | we need to turn off the partitioning optimization. */ | |
750054a2 | 756 | |
677f3fa8 | 757 | ui_except = targetm_common.except_unwind_info (opts); |
f0a0390e | 758 | |
d5478783 JM |
759 | if (opts->x_flag_exceptions |
760 | && opts->x_flag_reorder_blocks_and_partition | |
bf1431e3 | 761 | && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)) |
750054a2 | 762 | { |
32ad0f03 TJ |
763 | if (opts_set->x_flag_reorder_blocks_and_partition) |
764 | inform (loc, | |
765 | "-freorder-blocks-and-partition does not work " | |
766 | "with exceptions on this architecture"); | |
d5478783 JM |
767 | opts->x_flag_reorder_blocks_and_partition = 0; |
768 | opts->x_flag_reorder_blocks = 1; | |
750054a2 | 769 | } |
c7466dee | 770 | |
e395963f JW |
771 | /* If user requested unwind info, then turn off the partitioning |
772 | optimization. */ | |
773 | ||
d5478783 | 774 | if (opts->x_flag_unwind_tables |
677f3fa8 | 775 | && !targetm_common.unwind_tables_default |
d5478783 | 776 | && opts->x_flag_reorder_blocks_and_partition |
bf1431e3 | 777 | && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)) |
e395963f | 778 | { |
32ad0f03 TJ |
779 | if (opts_set->x_flag_reorder_blocks_and_partition) |
780 | inform (loc, | |
781 | "-freorder-blocks-and-partition does not support " | |
782 | "unwind info on this architecture"); | |
d5478783 JM |
783 | opts->x_flag_reorder_blocks_and_partition = 0; |
784 | opts->x_flag_reorder_blocks = 1; | |
e395963f JW |
785 | } |
786 | ||
787 | /* If the target requested unwind info, then turn off the partitioning | |
788 | optimization with a different message. Likewise, if the target does not | |
789 | support named sections. */ | |
790 | ||
d5478783 | 791 | if (opts->x_flag_reorder_blocks_and_partition |
677f3fa8 | 792 | && (!targetm_common.have_named_sections |
d5478783 | 793 | || (opts->x_flag_unwind_tables |
677f3fa8 | 794 | && targetm_common.unwind_tables_default |
bf1431e3 | 795 | && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)))) |
c7466dee | 796 | { |
32ad0f03 TJ |
797 | if (opts_set->x_flag_reorder_blocks_and_partition) |
798 | inform (loc, | |
799 | "-freorder-blocks-and-partition does not work " | |
800 | "on this architecture"); | |
d5478783 JM |
801 | opts->x_flag_reorder_blocks_and_partition = 0; |
802 | opts->x_flag_reorder_blocks = 1; | |
c7466dee | 803 | } |
ab442df7 | 804 | |
940c4160 IS |
805 | if (opts->x_flag_reorder_blocks_and_partition |
806 | && !opts_set->x_flag_reorder_functions) | |
807 | opts->x_flag_reorder_functions = 1; | |
808 | ||
e855c69d AB |
809 | /* Pipelining of outer loops is only possible when general pipelining |
810 | capabilities are requested. */ | |
d5478783 JM |
811 | if (!opts->x_flag_sel_sched_pipelining) |
812 | opts->x_flag_sel_sched_pipelining_outer_loops = 0; | |
e855c69d | 813 | |
d5478783 | 814 | if (opts->x_flag_conserve_stack) |
6a78eaa3 | 815 | { |
48476d13 JM |
816 | maybe_set_param_value (PARAM_LARGE_STACK_FRAME, 100, |
817 | opts->x_param_values, opts_set->x_param_values); | |
818 | maybe_set_param_value (PARAM_STACK_FRAME_GROWTH, 40, | |
819 | opts->x_param_values, opts_set->x_param_values); | |
6a78eaa3 JH |
820 | } |
821 | ||
014d92e1 | 822 | if (opts->x_flag_lto) |
e3b8749b RG |
823 | { |
824 | #ifdef ENABLE_LTO | |
d5478783 | 825 | opts->x_flag_generate_lto = 1; |
e3b8749b RG |
826 | |
827 | /* When generating IL, do not operate in whole-program mode. | |
828 | Otherwise, symbols will be privatized too early, causing link | |
829 | errors later. */ | |
d5478783 | 830 | opts->x_flag_whole_program = 0; |
e3b8749b | 831 | #else |
299404a1 | 832 | error_at (loc, "LTO support has not been enabled in this configuration"); |
e3b8749b | 833 | #endif |
063d671d JH |
834 | if (!opts->x_flag_fat_lto_objects |
835 | && (!HAVE_LTO_PLUGIN | |
836 | || (opts_set->x_flag_use_linker_plugin | |
837 | && !opts->x_flag_use_linker_plugin))) | |
e9f67e62 JH |
838 | { |
839 | if (opts_set->x_flag_fat_lto_objects) | |
063d671d | 840 | error_at (loc, "-fno-fat-lto-objects are supported only with linker plugin"); |
e9f67e62 JH |
841 | opts->x_flag_fat_lto_objects = 1; |
842 | } | |
843 | } | |
e3b8749b | 844 | |
d5478783 | 845 | /* We initialize opts->x_flag_split_stack to -1 so that targets can set a |
7458026b | 846 | default value if they choose based on other options. */ |
d5478783 JM |
847 | if (opts->x_flag_split_stack == -1) |
848 | opts->x_flag_split_stack = 0; | |
849 | else if (opts->x_flag_split_stack) | |
7458026b | 850 | { |
677f3fa8 | 851 | if (!targetm_common.supports_split_stack (true, opts)) |
7458026b | 852 | { |
299404a1 JM |
853 | error_at (loc, "%<-fsplit-stack%> is not supported by " |
854 | "this compiler configuration"); | |
d5478783 | 855 | opts->x_flag_split_stack = 0; |
7458026b ILT |
856 | } |
857 | } | |
bfe068c3 | 858 | |
d6d11272 XDL |
859 | /* Tune vectorization related parametees according to cost model. */ |
860 | if (opts->x_flag_vect_cost_model == VECT_COST_MODEL_CHEAP) | |
861 | { | |
862 | maybe_set_param_value (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS, | |
863 | 6, opts->x_param_values, opts_set->x_param_values); | |
864 | maybe_set_param_value (PARAM_VECT_MAX_VERSION_FOR_ALIGNMENT_CHECKS, | |
865 | 0, opts->x_param_values, opts_set->x_param_values); | |
866 | maybe_set_param_value (PARAM_VECT_MAX_PEELING_FOR_ALIGNMENT, | |
867 | 0, opts->x_param_values, opts_set->x_param_values); | |
868 | } | |
869 | ||
bfe068c3 IR |
870 | /* Set PARAM_MAX_STORES_TO_SINK to 0 if either vectorization or if-conversion |
871 | is disabled. */ | |
ea0f3e87 XDL |
872 | if ((!opts->x_flag_tree_loop_vectorize && !opts->x_flag_tree_slp_vectorize) |
873 | || !opts->x_flag_tree_loop_if_convert) | |
bfe068c3 IR |
874 | maybe_set_param_value (PARAM_MAX_STORES_TO_SINK, 0, |
875 | opts->x_param_values, opts_set->x_param_values); | |
e9f8dcf9 | 876 | |
bd5c3baa | 877 | /* The -gsplit-dwarf option requires -ggnu-pubnames. */ |
99ea153e | 878 | if (opts->x_dwarf_split_debug_info) |
bd5c3baa | 879 | opts->x_debug_generate_pub_sections = 2; |
fec4842d | 880 | |
fed4de37 | 881 | /* Userspace and kernel ASan conflict with each other. */ |
fec4842d | 882 | |
d95a2703 JJ |
883 | if ((opts->x_flag_sanitize & SANITIZE_USER_ADDRESS) |
884 | && (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS)) | |
fec4842d | 885 | error_at (loc, |
d95a2703 JJ |
886 | "-fsanitize=address is incompatible with " |
887 | "-fsanitize=kernel-address"); | |
fec4842d | 888 | |
fed4de37 YG |
889 | /* And with TSan. */ |
890 | ||
d95a2703 JJ |
891 | if ((opts->x_flag_sanitize & SANITIZE_ADDRESS) |
892 | && (opts->x_flag_sanitize & SANITIZE_THREAD)) | |
fec4842d | 893 | error_at (loc, |
d95a2703 JJ |
894 | "-fsanitize=address and -fsanitize=kernel-address " |
895 | "are incompatible with -fsanitize=thread"); | |
896 | ||
897 | /* Error recovery is not allowed for ASan and TSan. */ | |
898 | ||
899 | if (opts->x_flag_sanitize_recover & SANITIZE_USER_ADDRESS) | |
900 | error_at (loc, "-fsanitize-recover=address is not supported"); | |
901 | ||
902 | if (opts->x_flag_sanitize_recover & SANITIZE_THREAD) | |
903 | error_at (loc, "-fsanitize-recover=thread is not supported"); | |
904 | ||
905 | if (opts->x_flag_sanitize_recover & SANITIZE_LEAK) | |
906 | error_at (loc, "-fsanitize-recover=leak is not supported"); | |
9ca0032c MZ |
907 | |
908 | /* When instrumenting the pointers, we don't want to remove | |
909 | the null pointer checks. */ | |
910 | if (opts->x_flag_sanitize & (SANITIZE_NULL | SANITIZE_NONNULL_ATTRIBUTE | |
911 | | SANITIZE_RETURNS_NONNULL_ATTRIBUTE)) | |
912 | opts->x_flag_delete_null_pointer_checks = 0; | |
913 | ||
914 | /* Aggressive compiler optimizations may cause false negatives. */ | |
915 | if (opts->x_flag_sanitize) | |
916 | { | |
917 | opts->x_flag_aggressive_loop_optimizations = 0; | |
918 | opts->x_flag_strict_overflow = 0; | |
919 | } | |
9756310a NB |
920 | } |
921 | ||
c662432e NC |
922 | #define LEFT_COLUMN 27 |
923 | ||
924 | /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
925 | followed by word-wrapped HELP in a second column. */ | |
926 | static void | |
927 | wrap_help (const char *help, | |
928 | const char *item, | |
929 | unsigned int item_width, | |
930 | unsigned int columns) | |
931 | { | |
932 | unsigned int col_width = LEFT_COLUMN; | |
933 | unsigned int remaining, room, len; | |
934 | ||
935 | remaining = strlen (help); | |
936 | ||
937 | do | |
938 | { | |
939 | room = columns - 3 - MAX (col_width, item_width); | |
940 | if (room > columns) | |
941 | room = 0; | |
942 | len = remaining; | |
943 | ||
944 | if (room < len) | |
945 | { | |
946 | unsigned int i; | |
947 | ||
948 | for (i = 0; help[i]; i++) | |
949 | { | |
950 | if (i >= room && len != remaining) | |
951 | break; | |
952 | if (help[i] == ' ') | |
953 | len = i; | |
954 | else if ((help[i] == '-' || help[i] == '/') | |
955 | && help[i + 1] != ' ' | |
956 | && i > 0 && ISALPHA (help[i - 1])) | |
957 | len = i + 1; | |
958 | } | |
959 | } | |
960 | ||
c3284718 | 961 | printf (" %-*.*s %.*s\n", col_width, item_width, item, len, help); |
c662432e NC |
962 | item_width = 0; |
963 | while (help[len] == ' ') | |
964 | len++; | |
965 | help += len; | |
966 | remaining -= len; | |
967 | } | |
968 | while (remaining); | |
969 | } | |
970 | ||
971 | /* Print help for a specific front-end, etc. */ | |
972 | static void | |
973 | print_filtered_help (unsigned int include_flags, | |
974 | unsigned int exclude_flags, | |
975 | unsigned int any_flags, | |
0576d21f | 976 | unsigned int columns, |
e6d4b984 JM |
977 | struct gcc_options *opts, |
978 | unsigned int lang_mask) | |
c662432e NC |
979 | { |
980 | unsigned int i; | |
981 | const char *help; | |
c662432e NC |
982 | bool found = false; |
983 | bool displayed = false; | |
ff5101bf | 984 | char new_help[128]; |
c662432e NC |
985 | |
986 | if (include_flags == CL_PARAMS) | |
987 | { | |
988 | for (i = 0; i < LAST_PARAM; i++) | |
989 | { | |
990 | const char *param = compiler_params[i].option; | |
991 | ||
992 | help = compiler_params[i].help; | |
993 | if (help == NULL || *help == '\0') | |
994 | { | |
995 | if (exclude_flags & CL_UNDOCUMENTED) | |
996 | continue; | |
997 | help = undocumented_msg; | |
998 | } | |
999 | ||
1000 | /* Get the translation. */ | |
1001 | help = _(help); | |
1002 | ||
ff5101bf AK |
1003 | if (!opts->x_quiet_flag) |
1004 | { | |
1005 | snprintf (new_help, sizeof (new_help), | |
1006 | _("default %d minimum %d maximum %d"), | |
1007 | compiler_params[i].default_value, | |
1008 | compiler_params[i].min_value, | |
1009 | compiler_params[i].max_value); | |
1010 | help = new_help; | |
1011 | } | |
c662432e NC |
1012 | wrap_help (help, param, strlen (param), columns); |
1013 | } | |
1014 | putchar ('\n'); | |
1015 | return; | |
1016 | } | |
1017 | ||
299404a1 JM |
1018 | if (!opts->x_help_printed) |
1019 | opts->x_help_printed = XCNEWVAR (char, cl_options_count); | |
c662432e | 1020 | |
e6d4b984 JM |
1021 | if (!opts->x_help_enum_printed) |
1022 | opts->x_help_enum_printed = XCNEWVAR (char, cl_enums_count); | |
1023 | ||
c662432e NC |
1024 | for (i = 0; i < cl_options_count; i++) |
1025 | { | |
c662432e NC |
1026 | const struct cl_option *option = cl_options + i; |
1027 | unsigned int len; | |
1028 | const char *opt; | |
1029 | const char *tab; | |
1030 | ||
1031 | if (include_flags == 0 | |
1032 | || ((option->flags & include_flags) != include_flags)) | |
1033 | { | |
1034 | if ((option->flags & any_flags) == 0) | |
1035 | continue; | |
1036 | } | |
1037 | ||
1038 | /* Skip unwanted switches. */ | |
1039 | if ((option->flags & exclude_flags) != 0) | |
1040 | continue; | |
1041 | ||
603349bf JM |
1042 | /* The driver currently prints its own help text. */ |
1043 | if ((option->flags & CL_DRIVER) != 0 | |
1044 | && (option->flags & (((1U << cl_lang_count) - 1) | |
1045 | | CL_COMMON | CL_TARGET)) == 0) | |
1046 | continue; | |
1047 | ||
c662432e NC |
1048 | found = true; |
1049 | /* Skip switches that have already been printed. */ | |
299404a1 | 1050 | if (opts->x_help_printed[i]) |
c662432e NC |
1051 | continue; |
1052 | ||
299404a1 | 1053 | opts->x_help_printed[i] = true; |
c662432e NC |
1054 | |
1055 | help = option->help; | |
1056 | if (help == NULL) | |
1057 | { | |
1058 | if (exclude_flags & CL_UNDOCUMENTED) | |
1059 | continue; | |
1060 | help = undocumented_msg; | |
1061 | } | |
1062 | ||
1063 | /* Get the translation. */ | |
1064 | help = _(help); | |
1065 | ||
1066 | /* Find the gap between the name of the | |
1067 | option and its descriptive text. */ | |
1068 | tab = strchr (help, '\t'); | |
1069 | if (tab) | |
1070 | { | |
1071 | len = tab - help; | |
1072 | opt = help; | |
1073 | help = tab + 1; | |
1074 | } | |
1075 | else | |
1076 | { | |
1077 | opt = option->opt_text; | |
1078 | len = strlen (opt); | |
1079 | } | |
1080 | ||
1081 | /* With the -Q option enabled we change the descriptive text associated | |
1082 | with an option to be an indication of its current setting. */ | |
a7d0d30f | 1083 | if (!opts->x_quiet_flag) |
c662432e | 1084 | { |
0576d21f | 1085 | void *flag_var = option_flag_var (i, opts); |
46625112 | 1086 | |
c662432e NC |
1087 | if (len < (LEFT_COLUMN + 2)) |
1088 | strcpy (new_help, "\t\t"); | |
1089 | else | |
1090 | strcpy (new_help, "\t"); | |
1091 | ||
21bf1558 JM |
1092 | if (flag_var != NULL |
1093 | && option->var_type != CLVC_DEFER) | |
c662432e NC |
1094 | { |
1095 | if (option->flags & CL_JOINED) | |
1096 | { | |
1097 | if (option->var_type == CLVC_STRING) | |
1098 | { | |
46625112 | 1099 | if (* (const char **) flag_var != NULL) |
c662432e NC |
1100 | snprintf (new_help + strlen (new_help), |
1101 | sizeof (new_help) - strlen (new_help), | |
46625112 | 1102 | * (const char **) flag_var); |
c662432e | 1103 | } |
e6d4b984 JM |
1104 | else if (option->var_type == CLVC_ENUM) |
1105 | { | |
1106 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1107 | int value; | |
1108 | const char *arg = NULL; | |
1109 | ||
1110 | value = e->get (flag_var); | |
1111 | enum_value_to_arg (e->values, &arg, value, lang_mask); | |
1112 | if (arg == NULL) | |
1113 | arg = _("[default]"); | |
1114 | snprintf (new_help + strlen (new_help), | |
1115 | sizeof (new_help) - strlen (new_help), | |
1116 | arg); | |
1117 | } | |
c662432e NC |
1118 | else |
1119 | sprintf (new_help + strlen (new_help), | |
46625112 | 1120 | "%#x", * (int *) flag_var); |
c662432e NC |
1121 | } |
1122 | else | |
0576d21f | 1123 | strcat (new_help, option_enabled (i, opts) |
c662432e NC |
1124 | ? _("[enabled]") : _("[disabled]")); |
1125 | } | |
1126 | ||
1127 | help = new_help; | |
1128 | } | |
1129 | ||
1130 | wrap_help (help, opt, len, columns); | |
1131 | displayed = true; | |
e6d4b984 JM |
1132 | |
1133 | if (option->var_type == CLVC_ENUM | |
1134 | && opts->x_help_enum_printed[option->var_enum] != 2) | |
1135 | opts->x_help_enum_printed[option->var_enum] = 1; | |
c662432e NC |
1136 | } |
1137 | ||
1138 | if (! found) | |
b3eaaf1a NC |
1139 | { |
1140 | unsigned int langs = include_flags & CL_LANG_ALL; | |
1141 | ||
1142 | if (langs == 0) | |
1143 | printf (_(" No options with the desired characteristics were found\n")); | |
1144 | else | |
1145 | { | |
1146 | unsigned int i; | |
1147 | ||
1148 | /* PR 31349: Tell the user how to see all of the | |
1149 | options supported by a specific front end. */ | |
1150 | for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
1151 | if ((1U << i) & langs) | |
1152 | printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
1153 | lang_names[i], lang_names[i]); | |
1154 | } | |
b8698a0f | 1155 | |
b3eaaf1a | 1156 | } |
c662432e NC |
1157 | else if (! displayed) |
1158 | printf (_(" All options with the desired characteristics have already been displayed\n")); | |
1159 | ||
1160 | putchar ('\n'); | |
e6d4b984 JM |
1161 | |
1162 | /* Print details of enumerated option arguments, if those | |
1163 | enumerations have help text headings provided. If no help text | |
1164 | is provided, presume that the possible values are listed in the | |
1165 | help text for the relevant options. */ | |
1166 | for (i = 0; i < cl_enums_count; i++) | |
1167 | { | |
1168 | unsigned int j, pos; | |
1169 | ||
1170 | if (opts->x_help_enum_printed[i] != 1) | |
1171 | continue; | |
1172 | if (cl_enums[i].help == NULL) | |
1173 | continue; | |
1174 | printf (" %s\n ", _(cl_enums[i].help)); | |
1175 | pos = 4; | |
1176 | for (j = 0; cl_enums[i].values[j].arg != NULL; j++) | |
1177 | { | |
1178 | unsigned int len = strlen (cl_enums[i].values[j].arg); | |
1179 | ||
1180 | if (pos > 4 && pos + 1 + len <= columns) | |
1181 | { | |
1182 | printf (" %s", cl_enums[i].values[j].arg); | |
1183 | pos += 1 + len; | |
1184 | } | |
1185 | else | |
1186 | { | |
1187 | if (pos > 4) | |
1188 | { | |
1189 | printf ("\n "); | |
1190 | pos = 4; | |
1191 | } | |
1192 | printf ("%s", cl_enums[i].values[j].arg); | |
1193 | pos += len; | |
1194 | } | |
1195 | } | |
1196 | printf ("\n\n"); | |
1197 | opts->x_help_enum_printed[i] = 2; | |
1198 | } | |
c662432e NC |
1199 | } |
1200 | ||
1201 | /* Display help for a specified type of option. | |
1202 | The options must have ALL of the INCLUDE_FLAGS set | |
1203 | ANY of the flags in the ANY_FLAGS set | |
0576d21f | 1204 | and NONE of the EXCLUDE_FLAGS set. The current option state is in |
e6d4b984 | 1205 | OPTS; LANG_MASK is used for interpreting enumerated option state. */ |
c662432e NC |
1206 | static void |
1207 | print_specific_help (unsigned int include_flags, | |
1208 | unsigned int exclude_flags, | |
0576d21f | 1209 | unsigned int any_flags, |
e6d4b984 JM |
1210 | struct gcc_options *opts, |
1211 | unsigned int lang_mask) | |
c662432e NC |
1212 | { |
1213 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1214 | const char * description = NULL; | |
1215 | const char * descrip_extra = ""; | |
1216 | size_t i; | |
1217 | unsigned int flag; | |
c662432e NC |
1218 | |
1219 | /* Sanity check: Make sure that we do not have more | |
1220 | languages than we have bits available to enumerate them. */ | |
58265ea6 | 1221 | gcc_assert ((1U << cl_lang_count) <= CL_MIN_OPTION_CLASS); |
c662432e NC |
1222 | |
1223 | /* If we have not done so already, obtain | |
1224 | the desired maximum width of the output. */ | |
299404a1 | 1225 | if (opts->x_help_columns == 0) |
c662432e NC |
1226 | { |
1227 | const char *p; | |
1228 | ||
71f3e391 | 1229 | p = getenv ("COLUMNS"); |
c662432e NC |
1230 | if (p != NULL) |
1231 | { | |
1232 | int value = atoi (p); | |
1233 | ||
1234 | if (value > 0) | |
299404a1 | 1235 | opts->x_help_columns = value; |
c662432e NC |
1236 | } |
1237 | ||
299404a1 | 1238 | if (opts->x_help_columns == 0) |
c662432e | 1239 | /* Use a reasonable default. */ |
299404a1 | 1240 | opts->x_help_columns = 80; |
c662432e NC |
1241 | } |
1242 | ||
1243 | /* Decide upon the title for the options that we are going to display. */ | |
1244 | for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
1245 | { | |
1246 | switch (flag & include_flags) | |
1247 | { | |
1248 | case 0: | |
603349bf | 1249 | case CL_DRIVER: |
c662432e NC |
1250 | break; |
1251 | ||
1252 | case CL_TARGET: | |
1253 | description = _("The following options are target specific"); | |
1254 | break; | |
1255 | case CL_WARNING: | |
1256 | description = _("The following options control compiler warning messages"); | |
1257 | break; | |
1258 | case CL_OPTIMIZATION: | |
1259 | description = _("The following options control optimizations"); | |
1260 | break; | |
1261 | case CL_COMMON: | |
1262 | description = _("The following options are language-independent"); | |
1263 | break; | |
1264 | case CL_PARAMS: | |
1265 | description = _("The --param option recognizes the following as parameters"); | |
1266 | break; | |
1267 | default: | |
1268 | if (i >= cl_lang_count) | |
1269 | break; | |
0631b69f | 1270 | if (exclude_flags & all_langs_mask) |
c01c261d | 1271 | description = _("The following options are specific to just the language "); |
c662432e | 1272 | else |
b5456e04 | 1273 | description = _("The following options are supported by the language "); |
b3eaaf1a | 1274 | descrip_extra = lang_names [i]; |
c662432e NC |
1275 | break; |
1276 | } | |
1277 | } | |
1278 | ||
1279 | if (description == NULL) | |
1280 | { | |
1281 | if (any_flags == 0) | |
1282 | { | |
0631b69f | 1283 | if (include_flags & CL_UNDOCUMENTED) |
c662432e | 1284 | description = _("The following options are not documented"); |
0631b69f RW |
1285 | else if (include_flags & CL_SEPARATE) |
1286 | description = _("The following options take separate arguments"); | |
1287 | else if (include_flags & CL_JOINED) | |
1288 | description = _("The following options take joined arguments"); | |
c662432e NC |
1289 | else |
1290 | { | |
1291 | internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
1292 | include_flags); | |
1293 | return; | |
1294 | } | |
1295 | } | |
1296 | else | |
1297 | { | |
1298 | if (any_flags & all_langs_mask) | |
1299 | description = _("The following options are language-related"); | |
1300 | else | |
1301 | description = _("The following options are language-independent"); | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | printf ("%s%s:\n", description, descrip_extra); | |
299404a1 | 1306 | print_filtered_help (include_flags, exclude_flags, any_flags, |
e6d4b984 | 1307 | opts->x_help_columns, opts, lang_mask); |
c662432e NC |
1308 | } |
1309 | ||
be3c16c4 DC |
1310 | /* Enable FDO-related flags. */ |
1311 | ||
1312 | static void | |
1313 | enable_fdo_optimizations (struct gcc_options *opts, | |
1314 | struct gcc_options *opts_set, | |
1315 | int value) | |
1316 | { | |
1317 | if (!opts_set->x_flag_branch_probabilities) | |
1318 | opts->x_flag_branch_probabilities = value; | |
1319 | if (!opts_set->x_flag_profile_values) | |
1320 | opts->x_flag_profile_values = value; | |
1321 | if (!opts_set->x_flag_unroll_loops) | |
1322 | opts->x_flag_unroll_loops = value; | |
1323 | if (!opts_set->x_flag_peel_loops) | |
1324 | opts->x_flag_peel_loops = value; | |
1325 | if (!opts_set->x_flag_tracer) | |
1326 | opts->x_flag_tracer = value; | |
1327 | if (!opts_set->x_flag_value_profile_transformations) | |
1328 | opts->x_flag_value_profile_transformations = value; | |
1329 | if (!opts_set->x_flag_inline_functions) | |
1330 | opts->x_flag_inline_functions = value; | |
1331 | if (!opts_set->x_flag_ipa_cp) | |
1332 | opts->x_flag_ipa_cp = value; | |
1333 | if (!opts_set->x_flag_ipa_cp_clone | |
1334 | && value && opts->x_flag_ipa_cp) | |
1335 | opts->x_flag_ipa_cp_clone = value; | |
1336 | if (!opts_set->x_flag_predictive_commoning) | |
1337 | opts->x_flag_predictive_commoning = value; | |
1338 | if (!opts_set->x_flag_unswitch_loops) | |
1339 | opts->x_flag_unswitch_loops = value; | |
1340 | if (!opts_set->x_flag_gcse_after_reload) | |
1341 | opts->x_flag_gcse_after_reload = value; | |
1342 | if (!opts_set->x_flag_tree_loop_vectorize | |
1343 | && !opts_set->x_flag_tree_vectorize) | |
1344 | opts->x_flag_tree_loop_vectorize = value; | |
1345 | if (!opts_set->x_flag_tree_slp_vectorize | |
1346 | && !opts_set->x_flag_tree_vectorize) | |
1347 | opts->x_flag_tree_slp_vectorize = value; | |
1348 | if (!opts_set->x_flag_vect_cost_model) | |
1349 | opts->x_flag_vect_cost_model = VECT_COST_MODEL_DYNAMIC; | |
1350 | if (!opts_set->x_flag_tree_loop_distribute_patterns) | |
1351 | opts->x_flag_tree_loop_distribute_patterns = value; | |
1352 | } | |
1353 | ||
d7b42618 | 1354 | /* Handle target- and language-independent options. Return zero to |
50431bc4 ZD |
1355 | generate an "unknown option" message. Only options that need |
1356 | extra handling need to be listed here; if you simply want | |
481e1176 | 1357 | DECODED->value assigned to a variable, it happens automatically. */ |
50431bc4 | 1358 | |
c98cd5bf | 1359 | bool |
46625112 | 1360 | common_handle_option (struct gcc_options *opts, |
d4d24ba4 | 1361 | struct gcc_options *opts_set, |
46625112 | 1362 | const struct cl_decoded_option *decoded, |
5f20c657 | 1363 | unsigned int lang_mask, int kind ATTRIBUTE_UNUSED, |
a4d8c676 | 1364 | location_t loc, |
d5478783 JM |
1365 | const struct cl_option_handlers *handlers, |
1366 | diagnostic_context *dc) | |
d7b42618 | 1367 | { |
481e1176 JM |
1368 | size_t scode = decoded->opt_index; |
1369 | const char *arg = decoded->arg; | |
1370 | int value = decoded->value; | |
d7b42618 NB |
1371 | enum opt_code code = (enum opt_code) scode; |
1372 | ||
481e1176 JM |
1373 | gcc_assert (decoded->canonical_option_num_elements <= 2); |
1374 | ||
d7b42618 NB |
1375 | switch (code) |
1376 | { | |
903caebf | 1377 | case OPT__param: |
299404a1 | 1378 | handle_param (opts, opts_set, loc, arg); |
903caebf NB |
1379 | break; |
1380 | ||
c662432e NC |
1381 | case OPT__help: |
1382 | { | |
1383 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1384 | unsigned int undoc_mask; | |
1385 | unsigned int i; | |
1386 | ||
a7d0d30f JM |
1387 | if (lang_mask == CL_DRIVER) |
1388 | break;; | |
1389 | ||
d5478783 JM |
1390 | undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings) |
1391 | ? 0 | |
1392 | : CL_UNDOCUMENTED); | |
c662432e NC |
1393 | /* First display any single language specific options. */ |
1394 | for (i = 0; i < cl_lang_count; i++) | |
1395 | print_specific_help | |
e6d4b984 JM |
1396 | (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0, opts, |
1397 | lang_mask); | |
c662432e | 1398 | /* Next display any multi language specific options. */ |
e6d4b984 | 1399 | print_specific_help (0, undoc_mask, all_langs_mask, opts, lang_mask); |
c662432e NC |
1400 | /* Then display any remaining, non-language options. */ |
1401 | for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
603349bf | 1402 | if (i != CL_DRIVER) |
e6d4b984 | 1403 | print_specific_help (i, undoc_mask, 0, opts, lang_mask); |
0576d21f | 1404 | opts->x_exit_after_options = true; |
c662432e NC |
1405 | break; |
1406 | } | |
1407 | ||
d185d268 | 1408 | case OPT__target_help: |
a7d0d30f JM |
1409 | if (lang_mask == CL_DRIVER) |
1410 | break; | |
1411 | ||
e6d4b984 | 1412 | print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0, opts, lang_mask); |
0576d21f | 1413 | opts->x_exit_after_options = true; |
d185d268 NB |
1414 | break; |
1415 | ||
c662432e NC |
1416 | case OPT__help_: |
1417 | { | |
1418 | const char * a = arg; | |
1419 | unsigned int include_flags = 0; | |
1420 | /* Note - by default we include undocumented options when listing | |
1421 | specific classes. If you only want to see documented options | |
fa10beec | 1422 | then add ",^undocumented" to the --help= option. E.g.: |
c662432e NC |
1423 | |
1424 | --help=target,^undocumented */ | |
1425 | unsigned int exclude_flags = 0; | |
1426 | ||
a7d0d30f JM |
1427 | if (lang_mask == CL_DRIVER) |
1428 | break; | |
1429 | ||
c662432e NC |
1430 | /* Walk along the argument string, parsing each word in turn. |
1431 | The format is: | |
1432 | arg = [^]{word}[,{arg}] | |
b5456e04 BM |
1433 | word = {optimizers|target|warnings|undocumented| |
1434 | params|common|<language>} */ | |
c662432e NC |
1435 | while (* a != 0) |
1436 | { | |
0576d21f | 1437 | static const struct |
c662432e NC |
1438 | { |
1439 | const char * string; | |
1440 | unsigned int flag; | |
1441 | } | |
1442 | specifics[] = | |
1443 | { | |
1444 | { "optimizers", CL_OPTIMIZATION }, | |
1445 | { "target", CL_TARGET }, | |
1446 | { "warnings", CL_WARNING }, | |
1447 | { "undocumented", CL_UNDOCUMENTED }, | |
1448 | { "params", CL_PARAMS }, | |
66811228 RW |
1449 | { "joined", CL_JOINED }, |
1450 | { "separate", CL_SEPARATE }, | |
b5456e04 | 1451 | { "common", CL_COMMON }, |
c662432e NC |
1452 | { NULL, 0 } |
1453 | }; | |
1454 | unsigned int * pflags; | |
86373e7e | 1455 | const char * comma; |
b3eaaf1a | 1456 | unsigned int lang_flag, specific_flag; |
c662432e NC |
1457 | unsigned int len; |
1458 | unsigned int i; | |
1459 | ||
1460 | if (* a == '^') | |
1461 | { | |
1462 | ++ a; | |
1463 | pflags = & exclude_flags; | |
1464 | } | |
1465 | else | |
1466 | pflags = & include_flags; | |
1467 | ||
1468 | comma = strchr (a, ','); | |
1469 | if (comma == NULL) | |
1470 | len = strlen (a); | |
1471 | else | |
1472 | len = comma - a; | |
0631b69f RW |
1473 | if (len == 0) |
1474 | { | |
1475 | a = comma + 1; | |
1476 | continue; | |
1477 | } | |
c662432e | 1478 | |
b3eaaf1a NC |
1479 | /* Check to see if the string matches an option class name. */ |
1480 | for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
c662432e NC |
1481 | if (strncasecmp (a, specifics[i].string, len) == 0) |
1482 | { | |
b3eaaf1a NC |
1483 | specific_flag = specifics[i].flag; |
1484 | break; | |
1485 | } | |
0631b69f | 1486 | |
b3eaaf1a NC |
1487 | /* Check to see if the string matches a language name. |
1488 | Note - we rely upon the alpha-sorted nature of the entries in | |
1489 | the lang_names array, specifically that shorter names appear | |
fa10beec | 1490 | before their longer variants. (i.e. C before C++). That way |
b3eaaf1a NC |
1491 | when we are attempting to match --help=c for example we will |
1492 | match with C first and not C++. */ | |
1493 | for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
1494 | if (strncasecmp (a, lang_names[i], len) == 0) | |
1495 | { | |
1496 | lang_flag = 1U << i; | |
c662432e NC |
1497 | break; |
1498 | } | |
1499 | ||
b3eaaf1a | 1500 | if (specific_flag != 0) |
c662432e | 1501 | { |
b3eaaf1a NC |
1502 | if (lang_flag == 0) |
1503 | * pflags |= specific_flag; | |
1504 | else | |
1505 | { | |
1506 | /* The option's argument matches both the start of a | |
1507 | language name and the start of an option class name. | |
1508 | We have a special case for when the user has | |
1509 | specified "--help=c", but otherwise we have to issue | |
1510 | a warning. */ | |
1511 | if (strncasecmp (a, "c", len) == 0) | |
1512 | * pflags |= lang_flag; | |
1513 | else | |
299404a1 JM |
1514 | warning_at (loc, 0, |
1515 | "--help argument %q.*s is ambiguous, " | |
1516 | "please be more specific", | |
1517 | len, a); | |
b3eaaf1a | 1518 | } |
c662432e | 1519 | } |
b3eaaf1a NC |
1520 | else if (lang_flag != 0) |
1521 | * pflags |= lang_flag; | |
1522 | else | |
299404a1 JM |
1523 | warning_at (loc, 0, |
1524 | "unrecognized argument to --help= option: %q.*s", | |
1525 | len, a); | |
c662432e NC |
1526 | |
1527 | if (comma == NULL) | |
1528 | break; | |
1529 | a = comma + 1; | |
1530 | } | |
1531 | ||
1532 | if (include_flags) | |
e6d4b984 JM |
1533 | print_specific_help (include_flags, exclude_flags, 0, opts, |
1534 | lang_mask); | |
0576d21f | 1535 | opts->x_exit_after_options = true; |
c662432e NC |
1536 | break; |
1537 | } | |
1538 | ||
d185d268 | 1539 | case OPT__version: |
a7d0d30f JM |
1540 | if (lang_mask == CL_DRIVER) |
1541 | break; | |
1542 | ||
0576d21f | 1543 | opts->x_exit_after_options = true; |
d185d268 NB |
1544 | break; |
1545 | ||
de5a5fa1 | 1546 | case OPT_fsanitize_: |
d95a2703 | 1547 | case OPT_fsanitize_recover_: |
de5a5fa1 MP |
1548 | { |
1549 | const char *p = arg; | |
d95a2703 JJ |
1550 | unsigned int *flag |
1551 | = code == OPT_fsanitize_ ? &opts->x_flag_sanitize | |
1552 | : &opts->x_flag_sanitize_recover; | |
de5a5fa1 MP |
1553 | while (*p != 0) |
1554 | { | |
1555 | static const struct | |
1556 | { | |
1557 | const char *const name; | |
1558 | unsigned int flag; | |
1559 | size_t len; | |
1560 | } spec[] = | |
1561 | { | |
fec4842d YG |
1562 | { "address", SANITIZE_ADDRESS | SANITIZE_USER_ADDRESS, |
1563 | sizeof "address" - 1 }, | |
1564 | { "kernel-address", SANITIZE_ADDRESS | SANITIZE_KERNEL_ADDRESS, | |
1565 | sizeof "kernel-address" - 1 }, | |
de5a5fa1 | 1566 | { "thread", SANITIZE_THREAD, sizeof "thread" - 1 }, |
9065ada9 | 1567 | { "leak", SANITIZE_LEAK, sizeof "leak" - 1 }, |
de5a5fa1 MP |
1568 | { "shift", SANITIZE_SHIFT, sizeof "shift" - 1 }, |
1569 | { "integer-divide-by-zero", SANITIZE_DIVIDE, | |
1570 | sizeof "integer-divide-by-zero" - 1 }, | |
1571 | { "undefined", SANITIZE_UNDEFINED, sizeof "undefined" - 1 }, | |
1572 | { "unreachable", SANITIZE_UNREACHABLE, | |
1573 | sizeof "unreachable" - 1 }, | |
b906f4ca | 1574 | { "vla-bound", SANITIZE_VLA, sizeof "vla-bound" - 1 }, |
0a508bb6 | 1575 | { "return", SANITIZE_RETURN, sizeof "return" - 1 }, |
b9a55b13 | 1576 | { "null", SANITIZE_NULL, sizeof "null" - 1 }, |
31e071ae MP |
1577 | { "signed-integer-overflow", SANITIZE_SI_OVERFLOW, |
1578 | sizeof "signed-integer-overflow" -1 }, | |
ac0ff9f2 JJ |
1579 | { "bool", SANITIZE_BOOL, sizeof "bool" - 1 }, |
1580 | { "enum", SANITIZE_ENUM, sizeof "enum" - 1 }, | |
f8ed5150 MP |
1581 | { "float-divide-by-zero", SANITIZE_FLOAT_DIVIDE, |
1582 | sizeof "float-divide-by-zero" - 1 }, | |
85a16bf8 MP |
1583 | { "float-cast-overflow", SANITIZE_FLOAT_CAST, |
1584 | sizeof "float-cast-overflow" - 1 }, | |
0e37a2f3 | 1585 | { "bounds", SANITIZE_BOUNDS, sizeof "bounds" - 1 }, |
944fa280 | 1586 | { "alignment", SANITIZE_ALIGNMENT, sizeof "alignment" - 1 }, |
126edc3f JJ |
1587 | { "nonnull-attribute", SANITIZE_NONNULL_ATTRIBUTE, |
1588 | sizeof "nonnull-attribute" - 1 }, | |
1589 | { "returns-nonnull-attribute", | |
1590 | SANITIZE_RETURNS_NONNULL_ATTRIBUTE, | |
1591 | sizeof "returns-nonnull-attribute" - 1 }, | |
0e82f089 MP |
1592 | { "object-size", SANITIZE_OBJECT_SIZE, |
1593 | sizeof "object-size" - 1 }, | |
de5a5fa1 MP |
1594 | { NULL, 0, 0 } |
1595 | }; | |
1596 | const char *comma; | |
1597 | size_t len, i; | |
1598 | bool found = false; | |
1599 | ||
1600 | comma = strchr (p, ','); | |
1601 | if (comma == NULL) | |
1602 | len = strlen (p); | |
1603 | else | |
1604 | len = comma - p; | |
1605 | if (len == 0) | |
1606 | { | |
1607 | p = comma + 1; | |
1608 | continue; | |
1609 | } | |
1610 | ||
1611 | /* Check to see if the string matches an option class name. */ | |
1612 | for (i = 0; spec[i].name != NULL; ++i) | |
1613 | if (len == spec[i].len | |
1614 | && memcmp (p, spec[i].name, len) == 0) | |
1615 | { | |
1616 | /* Handle both -fsanitize and -fno-sanitize cases. */ | |
1617 | if (value) | |
d95a2703 | 1618 | *flag |= spec[i].flag; |
de5a5fa1 | 1619 | else |
d95a2703 | 1620 | *flag &= ~spec[i].flag; |
de5a5fa1 MP |
1621 | found = true; |
1622 | break; | |
1623 | } | |
1624 | ||
1625 | if (! found) | |
c2ac23fe | 1626 | error_at (loc, |
d95a2703 JJ |
1627 | "unrecognized argument to -fsanitize%s= option: %q.*s", |
1628 | code == OPT_fsanitize_ ? "" : "-recover", (int) len, p); | |
de5a5fa1 MP |
1629 | |
1630 | if (comma == NULL) | |
1631 | break; | |
1632 | p = comma + 1; | |
1633 | } | |
1634 | ||
d95a2703 JJ |
1635 | if (code != OPT_fsanitize_) |
1636 | break; | |
1637 | ||
fec4842d YG |
1638 | /* Kernel ASan implies normal ASan but does not yet support |
1639 | all features. */ | |
d95a2703 | 1640 | if (opts->x_flag_sanitize & SANITIZE_KERNEL_ADDRESS) |
fec4842d YG |
1641 | { |
1642 | maybe_set_param_value (PARAM_ASAN_INSTRUMENTATION_WITH_CALL_THRESHOLD, 0, | |
1643 | opts->x_param_values, | |
1644 | opts_set->x_param_values); | |
1645 | maybe_set_param_value (PARAM_ASAN_GLOBALS, 0, | |
1646 | opts->x_param_values, | |
1647 | opts_set->x_param_values); | |
1648 | maybe_set_param_value (PARAM_ASAN_STACK, 0, | |
1649 | opts->x_param_values, | |
1650 | opts_set->x_param_values); | |
1651 | maybe_set_param_value (PARAM_ASAN_USE_AFTER_RETURN, 0, | |
1652 | opts->x_param_values, | |
1653 | opts_set->x_param_values); | |
1654 | } | |
1655 | ||
de5a5fa1 MP |
1656 | break; |
1657 | } | |
1658 | ||
fd960af2 YG |
1659 | case OPT_fasan_shadow_offset_: |
1660 | /* Deferred. */ | |
1661 | break; | |
1662 | ||
d95a2703 JJ |
1663 | case OPT_fsanitize_recover: |
1664 | if (value) | |
1665 | opts->x_flag_sanitize_recover | |
1666 | |= SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT; | |
1667 | else | |
1668 | opts->x_flag_sanitize_recover | |
1669 | &= ~(SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT); | |
1670 | break; | |
1671 | ||
903caebf NB |
1672 | case OPT_O: |
1673 | case OPT_Os: | |
c3a02647 | 1674 | case OPT_Ofast: |
bf7a7185 | 1675 | case OPT_Og: |
903caebf NB |
1676 | /* Currently handled in a prescan. */ |
1677 | break; | |
1678 | ||
aee15221 RG |
1679 | case OPT_Werror: |
1680 | dc->warning_as_error_requested = value; | |
1681 | break; | |
1682 | ||
79cf5994 | 1683 | case OPT_Werror_: |
a7d0d30f JM |
1684 | if (lang_mask == CL_DRIVER) |
1685 | break; | |
1686 | ||
c5fa0890 JM |
1687 | enable_warning_as_error (arg, value, lang_mask, handlers, |
1688 | opts, opts_set, loc, dc); | |
79cf5994 DD |
1689 | break; |
1690 | ||
e01cc6dc | 1691 | case OPT_Wlarger_than_: |
d5478783 JM |
1692 | opts->x_larger_than_size = value; |
1693 | opts->x_warn_larger_than = value != -1; | |
e01cc6dc NB |
1694 | break; |
1695 | ||
5f0f4a3b | 1696 | case OPT_Wfatal_errors: |
d5478783 | 1697 | dc->fatal_errors = value; |
5f0f4a3b JM |
1698 | break; |
1699 | ||
a214518f | 1700 | case OPT_Wframe_larger_than_: |
d5478783 JM |
1701 | opts->x_frame_larger_than_size = value; |
1702 | opts->x_warn_frame_larger_than = value != -1; | |
a214518f SP |
1703 | break; |
1704 | ||
a11e0df4 EB |
1705 | case OPT_Wstack_usage_: |
1706 | opts->x_warn_stack_usage = value; | |
1707 | opts->x_flag_stack_usage_info = value != -1; | |
1708 | break; | |
1709 | ||
e01cc6dc | 1710 | case OPT_Wstrict_aliasing: |
d5478783 | 1711 | set_Wstrict_aliasing (opts, value); |
e01cc6dc NB |
1712 | break; |
1713 | ||
6ac01510 | 1714 | case OPT_Wstrict_overflow: |
d5478783 JM |
1715 | opts->x_warn_strict_overflow = (value |
1716 | ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
1717 | : 0); | |
6ac01510 ILT |
1718 | break; |
1719 | ||
5f0f4a3b | 1720 | case OPT_Wsystem_headers: |
d5478783 | 1721 | dc->dc_warn_system_headers = value; |
903caebf NB |
1722 | break; |
1723 | ||
d185d268 | 1724 | case OPT_aux_info: |
d5478783 | 1725 | opts->x_flag_gen_aux_info = 1; |
d185d268 NB |
1726 | break; |
1727 | ||
1728 | case OPT_auxbase_strip: | |
1729 | { | |
1730 | char *tmp = xstrdup (arg); | |
1731 | strip_off_ending (tmp, strlen (tmp)); | |
1732 | if (tmp[0]) | |
d5478783 | 1733 | opts->x_aux_base_name = tmp; |
fc429b48 TB |
1734 | else |
1735 | free (tmp); | |
d185d268 NB |
1736 | } |
1737 | break; | |
1738 | ||
1739 | case OPT_d: | |
299404a1 | 1740 | decode_d_option (arg, opts, loc, dc); |
d185d268 NB |
1741 | break; |
1742 | ||
058de654 | 1743 | case OPT_fcall_used_: |
058de654 | 1744 | case OPT_fcall_saved_: |
21bf1558 | 1745 | /* Deferred. */ |
058de654 | 1746 | break; |
6fb5fa3c DB |
1747 | |
1748 | case OPT_fdbg_cnt_: | |
0a090f42 | 1749 | case OPT_fdbg_cnt_list: |
299404a1 | 1750 | /* Deferred. */ |
0a090f42 | 1751 | break; |
058de654 | 1752 | |
c8aea42c | 1753 | case OPT_fdebug_prefix_map_: |
299404a1 | 1754 | /* Deferred. */ |
c8aea42c PB |
1755 | break; |
1756 | ||
de32c0cb | 1757 | case OPT_fdiagnostics_show_location_: |
e6d4b984 | 1758 | diagnostic_prefixing_rule (dc) = (diagnostic_prefixing_rule_t) value; |
de32c0cb | 1759 | break; |
9fec0042 MLI |
1760 | |
1761 | case OPT_fdiagnostics_show_caret: | |
1762 | dc->show_caret = value; | |
1763 | break; | |
de32c0cb | 1764 | |
4b84d650 JJ |
1765 | case OPT_fdiagnostics_color_: |
1766 | pp_show_color (dc->printer) | |
1767 | = colorize_init ((diagnostic_color_rule_t) value); | |
1768 | break; | |
1769 | ||
2098fe9e | 1770 | case OPT_fdiagnostics_show_option: |
d5478783 | 1771 | dc->show_option_requested = value; |
2098fe9e DD |
1772 | break; |
1773 | ||
6de9cd9a | 1774 | case OPT_fdump_: |
21bf1558 | 1775 | /* Deferred. */ |
6de9cd9a DN |
1776 | break; |
1777 | ||
058de654 | 1778 | case OPT_ffast_math: |
d5478783 | 1779 | set_fast_math_flags (opts, value); |
058de654 NB |
1780 | break; |
1781 | ||
a1a82611 | 1782 | case OPT_funsafe_math_optimizations: |
d5478783 | 1783 | set_unsafe_math_optimizations_flags (opts, value); |
a1a82611 RE |
1784 | break; |
1785 | ||
058de654 | 1786 | case OPT_ffixed_: |
21bf1558 | 1787 | /* Deferred. */ |
058de654 NB |
1788 | break; |
1789 | ||
d302c9d6 | 1790 | case OPT_finline_limit_: |
48476d13 JM |
1791 | set_param_value ("max-inline-insns-single", value / 2, |
1792 | opts->x_param_values, opts_set->x_param_values); | |
1793 | set_param_value ("max-inline-insns-auto", value / 2, | |
1794 | opts->x_param_values, opts_set->x_param_values); | |
d302c9d6 NB |
1795 | break; |
1796 | ||
8d5a7d1f | 1797 | case OPT_finstrument_functions_exclude_function_list_: |
1ebc7e68 | 1798 | add_comma_separated_to_vector |
6a1f6c9c | 1799 | (&opts->x_flag_instrument_functions_exclude_functions, arg); |
8d5a7d1f ILT |
1800 | break; |
1801 | ||
1802 | case OPT_finstrument_functions_exclude_file_list_: | |
1ebc7e68 | 1803 | add_comma_separated_to_vector |
6a1f6c9c | 1804 | (&opts->x_flag_instrument_functions_exclude_files, arg); |
8d5a7d1f ILT |
1805 | break; |
1806 | ||
de32c0cb | 1807 | case OPT_fmessage_length_: |
d5478783 | 1808 | pp_set_line_maximum_length (dc->printer, value); |
9fec0042 | 1809 | diagnostic_set_caret_max_width (dc, value); |
de32c0cb NB |
1810 | break; |
1811 | ||
78c60e3d SS |
1812 | case OPT_fopt_info: |
1813 | case OPT_fopt_info_: | |
1814 | /* Deferred. */ | |
1815 | break; | |
1816 | ||
c713ddc0 BS |
1817 | case OPT_foffload_: |
1818 | /* Deferred. */ | |
1819 | break; | |
1820 | ||
1821 | #ifndef ACCEL_COMPILER | |
1822 | case OPT_foffload_abi_: | |
1823 | error_at (loc, "-foffload-abi option can be specified only for " | |
1824 | "offload compiler"); | |
1825 | break; | |
1826 | #endif | |
1827 | ||
467cecf3 JB |
1828 | case OPT_fpack_struct_: |
1829 | if (value <= 0 || (value & (value - 1)) || value > 16) | |
299404a1 JM |
1830 | error_at (loc, |
1831 | "structure alignment must be a small power of two, not %d", | |
1832 | value); | |
467cecf3 | 1833 | else |
299404a1 | 1834 | opts->x_initial_max_fld_align = value; |
467cecf3 JB |
1835 | break; |
1836 | ||
68a607d8 | 1837 | case OPT_fplugin_: |
68a607d8 | 1838 | case OPT_fplugin_arg_: |
21bf1558 | 1839 | /* Deferred. */ |
68a607d8 DN |
1840 | break; |
1841 | ||
2f908293 | 1842 | case OPT_fprofile_use_: |
0576d21f | 1843 | opts->x_profile_data_prefix = xstrdup (arg); |
d5478783 | 1844 | opts->x_flag_profile_use = true; |
2f908293 SP |
1845 | value = true; |
1846 | /* No break here - do -fprofile-use processing. */ | |
a8a5f53a | 1847 | case OPT_fprofile_use: |
be3c16c4 | 1848 | enable_fdo_optimizations (opts, opts_set, value); |
9cec31f4 | 1849 | if (!opts_set->x_flag_profile_reorder_functions) |
be3c16c4 DC |
1850 | opts->x_flag_profile_reorder_functions = value; |
1851 | /* Indirect call profiling should do all useful transformations | |
1852 | speculative devirtualization does. */ | |
bbc9396b JH |
1853 | if (!opts_set->x_flag_devirtualize_speculatively |
1854 | && opts->x_flag_value_profile_transformations) | |
1855 | opts->x_flag_devirtualize_speculatively = false; | |
a8a5f53a JH |
1856 | break; |
1857 | ||
be3c16c4 DC |
1858 | case OPT_fauto_profile_: |
1859 | opts->x_auto_profile_file = xstrdup (arg); | |
1860 | opts->x_flag_auto_profile = true; | |
1861 | value = true; | |
1862 | /* No break here - do -fauto-profile processing. */ | |
1863 | case OPT_fauto_profile: | |
1864 | enable_fdo_optimizations (opts, opts_set, value); | |
1865 | if (!opts_set->x_flag_profile_correction) | |
1866 | opts->x_flag_profile_correction = value; | |
1867 | maybe_set_param_value ( | |
1868 | PARAM_EARLY_INLINER_MAX_ITERATIONS, 10, | |
1869 | opts->x_param_values, opts_set->x_param_values); | |
1870 | break; | |
1871 | ||
2f908293 | 1872 | case OPT_fprofile_generate_: |
0576d21f | 1873 | opts->x_profile_data_prefix = xstrdup (arg); |
2f908293 SP |
1874 | value = true; |
1875 | /* No break here - do -fprofile-generate processing. */ | |
a8a5f53a | 1876 | case OPT_fprofile_generate: |
d4d24ba4 | 1877 | if (!opts_set->x_profile_arc_flag) |
d5478783 | 1878 | opts->x_profile_arc_flag = value; |
d4d24ba4 | 1879 | if (!opts_set->x_flag_profile_values) |
d5478783 | 1880 | opts->x_flag_profile_values = value; |
d4d24ba4 | 1881 | if (!opts_set->x_flag_inline_functions) |
d5478783 | 1882 | opts->x_flag_inline_functions = value; |
b0223c3e JH |
1883 | /* FIXME: Instrumentation we insert makes ipa-reference bitmaps |
1884 | quadratic. Disable the pass until better memory representation | |
1885 | is done. */ | |
1c58fe29 | 1886 | if (!opts_set->x_flag_ipa_reference) |
b0223c3e | 1887 | opts->x_flag_ipa_reference = false; |
a8a5f53a JH |
1888 | break; |
1889 | ||
ea0f3e87 XDL |
1890 | case OPT_ftree_vectorize: |
1891 | if (!opts_set->x_flag_tree_loop_vectorize) | |
1892 | opts->x_flag_tree_loop_vectorize = value; | |
1893 | if (!opts_set->x_flag_tree_slp_vectorize) | |
1894 | opts->x_flag_tree_slp_vectorize = value; | |
1895 | break; | |
5f0f4a3b | 1896 | case OPT_fshow_column: |
d5478783 | 1897 | dc->show_column = value; |
5f0f4a3b JM |
1898 | break; |
1899 | ||
de32c0cb NB |
1900 | case OPT_frandom_seed: |
1901 | /* The real switch is -fno-random-seed. */ | |
1902 | if (value) | |
5f20c657 | 1903 | return false; |
299404a1 | 1904 | /* Deferred. */ |
de32c0cb NB |
1905 | break; |
1906 | ||
1907 | case OPT_frandom_seed_: | |
299404a1 | 1908 | /* Deferred. */ |
de32c0cb NB |
1909 | break; |
1910 | ||
de32c0cb NB |
1911 | case OPT_fsched_verbose_: |
1912 | #ifdef INSN_SCHEDULING | |
299404a1 | 1913 | /* Handled with Var in common.opt. */ |
de32c0cb NB |
1914 | break; |
1915 | #else | |
5f20c657 | 1916 | return false; |
de32c0cb NB |
1917 | #endif |
1918 | ||
569fa502 | 1919 | case OPT_fsched_stalled_insns_: |
d5478783 JM |
1920 | opts->x_flag_sched_stalled_insns = value; |
1921 | if (opts->x_flag_sched_stalled_insns == 0) | |
1922 | opts->x_flag_sched_stalled_insns = -1; | |
569fa502 DN |
1923 | break; |
1924 | ||
569fa502 | 1925 | case OPT_fsched_stalled_insns_dep_: |
d5478783 | 1926 | opts->x_flag_sched_stalled_insns_dep = value; |
569fa502 | 1927 | break; |
6ff3a151 | 1928 | |
b38f3813 EB |
1929 | case OPT_fstack_check_: |
1930 | if (!strcmp (arg, "no")) | |
5e471ea6 | 1931 | opts->x_flag_stack_check = NO_STACK_CHECK; |
b38f3813 EB |
1932 | else if (!strcmp (arg, "generic")) |
1933 | /* This is the old stack checking method. */ | |
5e471ea6 | 1934 | opts->x_flag_stack_check = STACK_CHECK_BUILTIN |
b38f3813 EB |
1935 | ? FULL_BUILTIN_STACK_CHECK |
1936 | : GENERIC_STACK_CHECK; | |
1937 | else if (!strcmp (arg, "specific")) | |
1938 | /* This is the new stack checking method. */ | |
5e471ea6 | 1939 | opts->x_flag_stack_check = STACK_CHECK_BUILTIN |
b38f3813 EB |
1940 | ? FULL_BUILTIN_STACK_CHECK |
1941 | : STACK_CHECK_STATIC_BUILTIN | |
1942 | ? STATIC_BUILTIN_STACK_CHECK | |
1943 | : GENERIC_STACK_CHECK; | |
1944 | else | |
778e02fd | 1945 | warning_at (loc, 0, "unknown stack check parameter %qs", arg); |
b38f3813 EB |
1946 | break; |
1947 | ||
de32c0cb NB |
1948 | case OPT_fstack_limit: |
1949 | /* The real switch is -fno-stack-limit. */ | |
1950 | if (value) | |
5f20c657 | 1951 | return false; |
21bf1558 | 1952 | /* Deferred. */ |
de32c0cb NB |
1953 | break; |
1954 | ||
058de654 | 1955 | case OPT_fstack_limit_register_: |
058de654 | 1956 | case OPT_fstack_limit_symbol_: |
21bf1558 | 1957 | /* Deferred. */ |
058de654 NB |
1958 | break; |
1959 | ||
a11e0df4 EB |
1960 | case OPT_fstack_usage: |
1961 | opts->x_flag_stack_usage = value; | |
1962 | opts->x_flag_stack_usage_info = value != 0; | |
1963 | break; | |
1964 | ||
e01cc6dc | 1965 | case OPT_g: |
bc91b0e0 CC |
1966 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set, |
1967 | loc); | |
df38ffef NB |
1968 | break; |
1969 | ||
1970 | case OPT_gcoff: | |
299404a1 | 1971 | set_debug_level (SDB_DEBUG, false, arg, opts, opts_set, loc); |
df38ffef NB |
1972 | break; |
1973 | ||
6782438d | 1974 | case OPT_gdwarf: |
f0defe58 | 1975 | if (arg && strlen (arg) != 0) |
6782438d SKS |
1976 | { |
1977 | error_at (loc, "%<-gdwarf%s%> is ambiguous; " | |
1978 | "use %<-gdwarf-%s%> for DWARF version " | |
1979 | "or %<-gdwarf -g%s%> for debug level", arg, arg, arg); | |
1980 | break; | |
1981 | } | |
1982 | else | |
f0defe58 SKS |
1983 | value = opts->x_dwarf_version; |
1984 | ||
1985 | /* FALLTHRU */ | |
53b2323e | 1986 | case OPT_gdwarf_: |
b5b8b0ac | 1987 | if (value < 2 || value > 4) |
299404a1 | 1988 | error_at (loc, "dwarf version %d is not supported", value); |
53b2323e | 1989 | else |
a7d0d30f | 1990 | opts->x_dwarf_version = value; |
299404a1 | 1991 | set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc); |
df38ffef NB |
1992 | break; |
1993 | ||
99ea153e SA |
1994 | case OPT_gsplit_dwarf: |
1995 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, "", opts, opts_set, | |
1996 | loc); | |
1997 | break; | |
1998 | ||
df38ffef | 1999 | case OPT_ggdb: |
299404a1 | 2000 | set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc); |
df38ffef NB |
2001 | break; |
2002 | ||
2003 | case OPT_gstabs: | |
2004 | case OPT_gstabs_: | |
299404a1 JM |
2005 | set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg, opts, opts_set, |
2006 | loc); | |
df38ffef NB |
2007 | break; |
2008 | ||
2009 | case OPT_gvms: | |
299404a1 | 2010 | set_debug_level (VMS_DEBUG, false, arg, opts, opts_set, loc); |
df38ffef NB |
2011 | break; |
2012 | ||
2013 | case OPT_gxcoff: | |
2014 | case OPT_gxcoff_: | |
299404a1 JM |
2015 | set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg, opts, opts_set, |
2016 | loc); | |
e01cc6dc NB |
2017 | break; |
2018 | ||
29d7cbd1 RO |
2019 | case OPT_gz: |
2020 | case OPT_gz_: | |
2021 | /* Handled completely via specs. */ | |
2022 | break; | |
2023 | ||
d185d268 | 2024 | case OPT_pedantic_errors: |
d5478783 | 2025 | dc->pedantic_errors = 1; |
9b095bf1 MLI |
2026 | control_warning_option (OPT_Wpedantic, DK_ERROR, value, |
2027 | loc, lang_mask, | |
2028 | handlers, opts, opts_set, | |
2029 | dc); | |
c04b6b38 RG |
2030 | break; |
2031 | ||
014d92e1 | 2032 | case OPT_flto: |
595c8dfa | 2033 | opts->x_flag_lto = value ? "" : NULL; |
e10909ce AK |
2034 | break; |
2035 | ||
5f0f4a3b | 2036 | case OPT_w: |
d5478783 | 2037 | dc->dc_inhibit_warnings = true; |
5f0f4a3b JM |
2038 | break; |
2039 | ||
3a789837 NF |
2040 | case OPT_fmax_errors_: |
2041 | dc->max_errors = value; | |
2042 | break; | |
2043 | ||
b352afba NC |
2044 | case OPT_fuse_ld_bfd: |
2045 | case OPT_fuse_ld_gold: | |
da18ea94 RAE |
2046 | case OPT_fuse_linker_plugin: |
2047 | /* No-op. Used by the driver and passed to us because it starts with f.*/ | |
2048 | break; | |
2049 | ||
955f5a07 JJ |
2050 | case OPT_fwrapv: |
2051 | if (value) | |
2052 | opts->x_flag_trapv = 0; | |
2053 | break; | |
2054 | ||
2055 | case OPT_ftrapv: | |
2056 | if (value) | |
2057 | opts->x_flag_wrapv = 0; | |
2058 | break; | |
2059 | ||
b84d4347 | 2060 | case OPT_fipa_icf: |
9d4ded75 ML |
2061 | opts->x_flag_ipa_icf_functions = value; |
2062 | opts->x_flag_ipa_icf_variables = value; | |
b84d4347 ML |
2063 | break; |
2064 | ||
50431bc4 ZD |
2065 | default: |
2066 | /* If the flag was handled in a standard way, assume the lack of | |
2067 | processing here is intentional. */ | |
46625112 | 2068 | gcc_assert (option_flag_var (scode, opts)); |
0e61db61 | 2069 | break; |
d7b42618 NB |
2070 | } |
2071 | ||
7d5a5747 MLI |
2072 | common_handle_option_auto (opts, opts_set, decoded, lang_mask, kind, |
2073 | loc, handlers, dc); | |
5f20c657 | 2074 | return true; |
d7b42618 | 2075 | } |
903caebf NB |
2076 | |
2077 | /* Handle --param NAME=VALUE. */ | |
2078 | static void | |
48476d13 | 2079 | handle_param (struct gcc_options *opts, struct gcc_options *opts_set, |
299404a1 | 2080 | location_t loc, const char *carg) |
903caebf NB |
2081 | { |
2082 | char *equal, *arg; | |
2083 | int value; | |
2084 | ||
2085 | arg = xstrdup (carg); | |
2086 | equal = strchr (arg, '='); | |
2087 | if (!equal) | |
299404a1 JM |
2088 | error_at (loc, "%s: --param arguments should be of the form NAME=VALUE", |
2089 | arg); | |
903caebf NB |
2090 | else |
2091 | { | |
2092 | value = integral_argument (equal + 1); | |
2093 | if (value == -1) | |
299404a1 | 2094 | error_at (loc, "invalid --param value %qs", equal + 1); |
903caebf NB |
2095 | else |
2096 | { | |
2097 | *equal = '\0'; | |
48476d13 JM |
2098 | set_param_value (arg, value, |
2099 | opts->x_param_values, opts_set->x_param_values); | |
903caebf NB |
2100 | } |
2101 | } | |
2102 | ||
2103 | free (arg); | |
2104 | } | |
2105 | ||
d5478783 | 2106 | /* Used to set the level of strict aliasing warnings in OPTS, |
79bedddc SR |
2107 | when no level is specified (i.e., when -Wstrict-aliasing, and not |
2108 | -Wstrict-aliasing=level was given). | |
2109 | ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
2110 | and 0 otherwise. After calling this function, wstrict_aliasing will be | |
2111 | set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
65d4f2cd | 2112 | static void |
d5478783 | 2113 | set_Wstrict_aliasing (struct gcc_options *opts, int onoff) |
79bedddc SR |
2114 | { |
2115 | gcc_assert (onoff == 0 || onoff == 1); | |
2116 | if (onoff != 0) | |
d5478783 | 2117 | opts->x_warn_strict_aliasing = 3; |
621b5ed6 | 2118 | else |
d5478783 | 2119 | opts->x_warn_strict_aliasing = 0; |
79bedddc SR |
2120 | } |
2121 | ||
058de654 NB |
2122 | /* The following routines are useful in setting all the flags that |
2123 | -ffast-math and -fno-fast-math imply. */ | |
7bb3487f | 2124 | static void |
d5478783 | 2125 | set_fast_math_flags (struct gcc_options *opts, int set) |
058de654 | 2126 | { |
5e46b0c6 ILT |
2127 | if (!opts->frontend_set_flag_unsafe_math_optimizations) |
2128 | { | |
2129 | opts->x_flag_unsafe_math_optimizations = set; | |
2130 | set_unsafe_math_optimizations_flags (opts, set); | |
2131 | } | |
2132 | if (!opts->frontend_set_flag_finite_math_only) | |
2133 | opts->x_flag_finite_math_only = set; | |
2134 | if (!opts->frontend_set_flag_errno_math) | |
2135 | opts->x_flag_errno_math = !set; | |
058de654 | 2136 | if (set) |
039c3d42 | 2137 | { |
5e46b0c6 ILT |
2138 | if (!opts->frontend_set_flag_signaling_nans) |
2139 | opts->x_flag_signaling_nans = 0; | |
2140 | if (!opts->frontend_set_flag_rounding_math) | |
2141 | opts->x_flag_rounding_math = 0; | |
2142 | if (!opts->frontend_set_flag_cx_limited_range) | |
2143 | opts->x_flag_cx_limited_range = 1; | |
039c3d42 | 2144 | } |
058de654 NB |
2145 | } |
2146 | ||
b8698a0f L |
2147 | /* When -funsafe-math-optimizations is set the following |
2148 | flags are set as well. */ | |
7bb3487f | 2149 | static void |
d5478783 | 2150 | set_unsafe_math_optimizations_flags (struct gcc_options *opts, int set) |
a1a82611 | 2151 | { |
5e46b0c6 ILT |
2152 | if (!opts->frontend_set_flag_trapping_math) |
2153 | opts->x_flag_trapping_math = !set; | |
2154 | if (!opts->frontend_set_flag_signed_zeros) | |
2155 | opts->x_flag_signed_zeros = !set; | |
2156 | if (!opts->frontend_set_flag_associative_math) | |
2157 | opts->x_flag_associative_math = set; | |
2158 | if (!opts->frontend_set_flag_reciprocal_math) | |
2159 | opts->x_flag_reciprocal_math = set; | |
a1a82611 RE |
2160 | } |
2161 | ||
0576d21f | 2162 | /* Return true iff flags in OPTS are set as if -ffast-math. */ |
058de654 | 2163 | bool |
0576d21f | 2164 | fast_math_flags_set_p (const struct gcc_options *opts) |
058de654 | 2165 | { |
0576d21f JM |
2166 | return (!opts->x_flag_trapping_math |
2167 | && opts->x_flag_unsafe_math_optimizations | |
2168 | && opts->x_flag_finite_math_only | |
2169 | && !opts->x_flag_signed_zeros | |
2170 | && !opts->x_flag_errno_math); | |
058de654 | 2171 | } |
cf03fd63 | 2172 | |
ab442df7 MM |
2173 | /* Return true iff flags are set as if -ffast-math but using the flags stored |
2174 | in the struct cl_optimization structure. */ | |
2175 | bool | |
2176 | fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
2177 | { | |
e3339d0f JM |
2178 | return (!opt->x_flag_trapping_math |
2179 | && opt->x_flag_unsafe_math_optimizations | |
2180 | && opt->x_flag_finite_math_only | |
2181 | && !opt->x_flag_signed_zeros | |
2182 | && !opt->x_flag_errno_math); | |
ab442df7 MM |
2183 | } |
2184 | ||
0576d21f JM |
2185 | /* Handle a debug output -g switch for options OPTS |
2186 | (OPTS_SET->x_write_symbols storing whether a debug type was passed | |
299404a1 JM |
2187 | explicitly), location LOC. EXTENDED is true or false to support |
2188 | extended output (2 is special and means "-ggdb" was given). */ | |
df38ffef | 2189 | static void |
0576d21f | 2190 | set_debug_level (enum debug_info_type type, int extended, const char *arg, |
299404a1 JM |
2191 | struct gcc_options *opts, struct gcc_options *opts_set, |
2192 | location_t loc) | |
df38ffef | 2193 | { |
0576d21f | 2194 | opts->x_use_gnu_debug_info_extensions = extended; |
df38ffef NB |
2195 | |
2196 | if (type == NO_DEBUG) | |
2197 | { | |
0576d21f | 2198 | if (opts->x_write_symbols == NO_DEBUG) |
df38ffef | 2199 | { |
0576d21f | 2200 | opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE; |
df38ffef NB |
2201 | |
2202 | if (extended == 2) | |
2203 | { | |
2204 | #ifdef DWARF2_DEBUGGING_INFO | |
0576d21f | 2205 | opts->x_write_symbols = DWARF2_DEBUG; |
df38ffef | 2206 | #elif defined DBX_DEBUGGING_INFO |
0576d21f | 2207 | opts->x_write_symbols = DBX_DEBUG; |
df38ffef NB |
2208 | #endif |
2209 | } | |
2210 | ||
0576d21f | 2211 | if (opts->x_write_symbols == NO_DEBUG) |
299404a1 | 2212 | warning_at (loc, 0, "target system does not support debug output"); |
df38ffef NB |
2213 | } |
2214 | } | |
2215 | else | |
2216 | { | |
2217 | /* Does it conflict with an already selected type? */ | |
0576d21f JM |
2218 | if (opts_set->x_write_symbols != NO_DEBUG |
2219 | && opts->x_write_symbols != NO_DEBUG | |
2220 | && type != opts->x_write_symbols) | |
778e02fd | 2221 | error_at (loc, "debug format %qs conflicts with prior selection", |
299404a1 | 2222 | debug_type_names[type]); |
0576d21f JM |
2223 | opts->x_write_symbols = type; |
2224 | opts_set->x_write_symbols = type; | |
df38ffef NB |
2225 | } |
2226 | ||
bc91b0e0 CC |
2227 | /* A debug flag without a level defaults to level 2. |
2228 | If off or at level 1, set it to level 2, but if already | |
2229 | at level 3, don't lower it. */ | |
df38ffef NB |
2230 | if (*arg == '\0') |
2231 | { | |
bc91b0e0 | 2232 | if (opts->x_debug_info_level < DINFO_LEVEL_NORMAL) |
0576d21f | 2233 | opts->x_debug_info_level = DINFO_LEVEL_NORMAL; |
df38ffef NB |
2234 | } |
2235 | else | |
2236 | { | |
32e8bb8e ILT |
2237 | int argval = integral_argument (arg); |
2238 | if (argval == -1) | |
778e02fd | 2239 | error_at (loc, "unrecognised debug output level %qs", arg); |
32e8bb8e | 2240 | else if (argval > 3) |
778e02fd | 2241 | error_at (loc, "debug output level %qs is too high", arg); |
32e8bb8e | 2242 | else |
0576d21f | 2243 | opts->x_debug_info_level = (enum debug_info_levels) argval; |
df38ffef NB |
2244 | } |
2245 | } | |
2246 | ||
299404a1 JM |
2247 | /* Arrange to dump core on error for diagnostic context DC. (The |
2248 | regular error message is still printed first, except in the case of | |
2249 | abort ().) */ | |
75685792 | 2250 | |
c98cd5bf | 2251 | static void |
299404a1 | 2252 | setup_core_dumping (diagnostic_context *dc) |
75685792 | 2253 | { |
c98cd5bf JM |
2254 | #ifdef SIGABRT |
2255 | signal (SIGABRT, SIG_DFL); | |
2256 | #endif | |
2257 | #if defined(HAVE_SETRLIMIT) | |
2258 | { | |
2259 | struct rlimit rlim; | |
2260 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
2261 | fatal_error ("getting core file size maximum limit: %m"); | |
2262 | rlim.rlim_cur = rlim.rlim_max; | |
2263 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
2264 | fatal_error ("setting core file size limit to maximum: %m"); | |
2265 | } | |
2266 | #endif | |
299404a1 | 2267 | diagnostic_abort_on_error (dc); |
75685792 | 2268 | } |
5c60a017 | 2269 | |
299404a1 JM |
2270 | /* Parse a -d<ARG> command line switch for OPTS, location LOC, |
2271 | diagnostic context DC. */ | |
5c60a017 | 2272 | |
c98cd5bf | 2273 | static void |
299404a1 JM |
2274 | decode_d_option (const char *arg, struct gcc_options *opts, |
2275 | location_t loc, diagnostic_context *dc) | |
5c60a017 | 2276 | { |
c98cd5bf | 2277 | int c; |
5c60a017 | 2278 | |
c98cd5bf JM |
2279 | while (*arg) |
2280 | switch (c = *arg++) | |
2281 | { | |
2282 | case 'A': | |
299404a1 | 2283 | opts->x_flag_debug_asm = 1; |
c98cd5bf JM |
2284 | break; |
2285 | case 'p': | |
299404a1 | 2286 | opts->x_flag_print_asm_name = 1; |
c98cd5bf JM |
2287 | break; |
2288 | case 'P': | |
299404a1 JM |
2289 | opts->x_flag_dump_rtl_in_asm = 1; |
2290 | opts->x_flag_print_asm_name = 1; | |
c98cd5bf | 2291 | break; |
c98cd5bf | 2292 | case 'x': |
299404a1 | 2293 | opts->x_rtl_dump_and_exit = 1; |
c98cd5bf JM |
2294 | break; |
2295 | case 'D': /* These are handled by the preprocessor. */ | |
2296 | case 'I': | |
2297 | case 'M': | |
2298 | case 'N': | |
2299 | case 'U': | |
2300 | break; | |
2301 | case 'H': | |
299404a1 | 2302 | setup_core_dumping (dc); |
c98cd5bf JM |
2303 | break; |
2304 | case 'a': | |
299404a1 | 2305 | opts->x_flag_dump_all_passed = true; |
c98cd5bf | 2306 | break; |
21bf1558 | 2307 | |
c98cd5bf | 2308 | default: |
299404a1 | 2309 | warning_at (loc, 0, "unrecognized gcc debugging option: %c", c); |
c98cd5bf JM |
2310 | break; |
2311 | } | |
5c60a017 | 2312 | } |
dc90f45b | 2313 | |
1ebe4b4f | 2314 | /* Enable (or disable if VALUE is 0) a warning option ARG (language |
c5fa0890 JM |
2315 | mask LANG_MASK, option handlers HANDLERS) as an error for option |
2316 | structures OPTS and OPTS_SET, diagnostic context DC (possibly | |
2317 | NULL), location LOC. This is used by -Werror=. */ | |
dc90f45b | 2318 | |
a4d8c676 | 2319 | static void |
5f20c657 | 2320 | enable_warning_as_error (const char *arg, int value, unsigned int lang_mask, |
1ebe4b4f | 2321 | const struct cl_option_handlers *handlers, |
c5fa0890 JM |
2322 | struct gcc_options *opts, |
2323 | struct gcc_options *opts_set, | |
a4d8c676 | 2324 | location_t loc, diagnostic_context *dc) |
dc90f45b MLI |
2325 | { |
2326 | char *new_option; | |
2327 | int option_index; | |
2328 | ||
2329 | new_option = XNEWVEC (char, strlen (arg) + 2); | |
2330 | new_option[0] = 'W'; | |
2331 | strcpy (new_option + 1, arg); | |
2332 | option_index = find_opt (new_option, lang_mask); | |
6e2f1956 | 2333 | if (option_index == OPT_SPECIAL_unknown) |
dc90f45b | 2334 | { |
299404a1 | 2335 | error_at (loc, "-Werror=%s: no option -%s", arg, new_option); |
dc90f45b MLI |
2336 | } |
2337 | else | |
2338 | { | |
87cf0651 SB |
2339 | const diagnostic_t kind = value ? DK_ERROR : DK_WARNING; |
2340 | ||
c5fa0890 JM |
2341 | control_warning_option (option_index, (int) kind, value, |
2342 | loc, lang_mask, | |
2343 | handlers, opts, opts_set, dc); | |
dc90f45b MLI |
2344 | } |
2345 | free (new_option); | |
2346 | } | |
5f0f4a3b JM |
2347 | |
2348 | /* Return malloced memory for the name of the option OPTION_INDEX | |
2349 | which enabled a diagnostic (context CONTEXT), originally of type | |
2350 | ORIG_DIAG_KIND but possibly converted to DIAG_KIND by options such | |
2351 | as -Werror. */ | |
2352 | ||
2353 | char * | |
2354 | option_name (diagnostic_context *context, int option_index, | |
2355 | diagnostic_t orig_diag_kind, diagnostic_t diag_kind) | |
2356 | { | |
2357 | if (option_index) | |
2358 | { | |
2359 | /* A warning classified as an error. */ | |
2360 | if ((orig_diag_kind == DK_WARNING || orig_diag_kind == DK_PEDWARN) | |
2361 | && diag_kind == DK_ERROR) | |
2362 | return concat (cl_options[OPT_Werror_].opt_text, | |
2363 | /* Skip over "-W". */ | |
2364 | cl_options[option_index].opt_text + 2, | |
2365 | NULL); | |
2366 | /* A warning with option. */ | |
2367 | else | |
2368 | return xstrdup (cl_options[option_index].opt_text); | |
2369 | } | |
2370 | /* A warning without option classified as an error. */ | |
9f8da907 RS |
2371 | else if ((orig_diag_kind == DK_WARNING || orig_diag_kind == DK_PEDWARN |
2372 | || diag_kind == DK_WARNING) | |
2373 | && context->warning_as_error_requested) | |
2374 | return xstrdup (cl_options[OPT_Werror].opt_text); | |
5f0f4a3b JM |
2375 | else |
2376 | return NULL; | |
2377 | } |