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2772ef3e | 1 | /* Command line option handling. |
b1fb9f56 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
eeef0e45 | 3 | Free Software Foundation, Inc. |
2772ef3e NB |
4 | Contributed by Neil Booth. |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 10 | Software Foundation; either version 3, or (at your option) any later |
2772ef3e NB |
11 | version. |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
2772ef3e NB |
21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
cf03fd63 | 24 | #include "intl.h" |
2772ef3e NB |
25 | #include "coretypes.h" |
26 | #include "tm.h" | |
27 | #include "tree.h" | |
058de654 | 28 | #include "rtl.h" |
b38f3813 | 29 | #include "expr.h" |
058de654 NB |
30 | #include "ggc.h" |
31 | #include "output.h" | |
2772ef3e NB |
32 | #include "langhooks.h" |
33 | #include "opts.h" | |
d7b42618 NB |
34 | #include "options.h" |
35 | #include "flags.h" | |
36 | #include "toplev.h" | |
903caebf | 37 | #include "params.h" |
de32c0cb | 38 | #include "diagnostic.h" |
9756310a | 39 | #include "tm_p.h" /* For OPTIMIZATION_OPTIONS. */ |
d6553b54 | 40 | #include "insn-attr.h" /* For INSN_SCHEDULING. */ |
221ee7c9 | 41 | #include "target.h" |
ef330312 | 42 | #include "tree-pass.h" |
6fb5fa3c | 43 | #include "dbgcnt.h" |
c8aea42c | 44 | #include "debug.h" |
68a607d8 | 45 | #include "plugin.h" |
17f6e37d | 46 | #include "except.h" |
2772ef3e | 47 | |
d185d268 NB |
48 | /* Value of the -G xx switch, and whether it was passed or not. */ |
49 | unsigned HOST_WIDE_INT g_switch_value; | |
50 | bool g_switch_set; | |
51 | ||
e855c69d AB |
52 | /* Same for selective scheduling. */ |
53 | bool sel_sched_switch_set; | |
54 | ||
d185d268 NB |
55 | /* True if we should exit after parsing options. */ |
56 | bool exit_after_options; | |
57 | ||
e01cc6dc NB |
58 | /* True to warn about any objects definitions whose size is larger |
59 | than N bytes. Also want about function definitions whose returned | |
60 | values are larger than N bytes, where N is `larger_than_size'. */ | |
61 | bool warn_larger_than; | |
62 | HOST_WIDE_INT larger_than_size; | |
63 | ||
a214518f SP |
64 | /* True to warn about any function whose frame size is larger |
65 | * than N bytes. */ | |
66 | bool warn_frame_larger_than; | |
67 | HOST_WIDE_INT frame_larger_than_size; | |
68 | ||
df38ffef NB |
69 | /* Type(s) of debugging information we are producing (if any). See |
70 | flags.h for the definitions of the different possible types of | |
71 | debugging information. */ | |
72 | enum debug_info_type write_symbols = NO_DEBUG; | |
73 | ||
74 | /* Level of debugging information we are producing. See flags.h for | |
75 | the definitions of the different possible levels. */ | |
76 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
77 | ||
39ef6592 LC |
78 | /* A major contribution to object and executable size is debug |
79 | information size. A major contribution to debug information size | |
80 | is struct descriptions replicated in several object files. The | |
81 | following flags attempt to reduce this information. The basic | |
82 | idea is to not emit struct debugging information in the current | |
83 | compilation unit when that information will be generated by | |
84 | another compilation unit. | |
85 | ||
86 | Debug information for a struct defined in the current source | |
87 | file should be generated in the object file. Likewise the | |
88 | debug information for a struct defined in a header should be | |
89 | generated in the object file of the corresponding source file. | |
90 | Both of these case are handled when the base name of the file of | |
91 | the struct definition matches the base name of the source file | |
cea618ac | 92 | of the current compilation unit. This matching emits minimal |
39ef6592 LC |
93 | struct debugging information. |
94 | ||
95 | The base file name matching rule above will fail to emit debug | |
96 | information for structs defined in system headers. So a second | |
97 | category of files includes system headers in addition to files | |
98 | with matching bases. | |
99 | ||
100 | The remaining types of files are library headers and application | |
101 | headers. We cannot currently distinguish these two types. */ | |
102 | ||
103 | enum debug_struct_file | |
104 | { | |
105 | DINFO_STRUCT_FILE_NONE, /* Debug no structs. */ | |
106 | DINFO_STRUCT_FILE_BASE, /* Debug structs defined in files with the | |
107 | same base name as the compilation unit. */ | |
108 | DINFO_STRUCT_FILE_SYS, /* Also debug structs defined in system | |
109 | header files. */ | |
110 | DINFO_STRUCT_FILE_ANY /* Debug structs defined in all files. */ | |
111 | }; | |
112 | ||
113 | /* Generic structs (e.g. templates not explicitly specialized) | |
114 | may not have a compilation unit associated with them, and so | |
115 | may need to be treated differently from ordinary structs. | |
116 | ||
117 | Structs only handled by reference (indirectly), will also usually | |
118 | not need as much debugging information. */ | |
119 | ||
120 | static enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] | |
121 | = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
122 | static enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] | |
123 | = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
124 | ||
125 | /* Parse the -femit-struct-debug-detailed option value | |
126 | and set the flag variables. */ | |
127 | ||
128 | #define MATCH( prefix, string ) \ | |
129 | ((strncmp (prefix, string, sizeof prefix - 1) == 0) \ | |
130 | ? ((string += sizeof prefix - 1), 1) : 0) | |
131 | ||
132 | void | |
133 | set_struct_debug_option (const char *spec) | |
134 | { | |
135 | /* various labels for comparison */ | |
136 | static char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:"; | |
137 | static char ord_lbl[] = "ord:", gen_lbl[] = "gen:"; | |
138 | static char none_lbl[] = "none", any_lbl[] = "any"; | |
139 | static char base_lbl[] = "base", sys_lbl[] = "sys"; | |
140 | ||
141 | enum debug_struct_file files = DINFO_STRUCT_FILE_ANY; | |
142 | /* Default is to apply to as much as possible. */ | |
143 | enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS; | |
144 | int ord = 1, gen = 1; | |
145 | ||
146 | /* What usage? */ | |
147 | if (MATCH (dfn_lbl, spec)) | |
148 | usage = DINFO_USAGE_DFN; | |
149 | else if (MATCH (dir_lbl, spec)) | |
150 | usage = DINFO_USAGE_DIR_USE; | |
151 | else if (MATCH (ind_lbl, spec)) | |
152 | usage = DINFO_USAGE_IND_USE; | |
153 | ||
154 | /* Generics or not? */ | |
155 | if (MATCH (ord_lbl, spec)) | |
156 | gen = 0; | |
157 | else if (MATCH (gen_lbl, spec)) | |
158 | ord = 0; | |
159 | ||
160 | /* What allowable environment? */ | |
161 | if (MATCH (none_lbl, spec)) | |
162 | files = DINFO_STRUCT_FILE_NONE; | |
163 | else if (MATCH (any_lbl, spec)) | |
164 | files = DINFO_STRUCT_FILE_ANY; | |
165 | else if (MATCH (sys_lbl, spec)) | |
166 | files = DINFO_STRUCT_FILE_SYS; | |
167 | else if (MATCH (base_lbl, spec)) | |
168 | files = DINFO_STRUCT_FILE_BASE; | |
169 | else | |
170 | error ("argument %qs to %<-femit-struct-debug-detailed%> not recognized", | |
171 | spec); | |
172 | ||
173 | /* Effect the specification. */ | |
174 | if (usage == DINFO_USAGE_NUM_ENUMS) | |
175 | { | |
176 | if (ord) | |
177 | { | |
178 | debug_struct_ordinary[DINFO_USAGE_DFN] = files; | |
179 | debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files; | |
180 | debug_struct_ordinary[DINFO_USAGE_IND_USE] = files; | |
181 | } | |
182 | if (gen) | |
183 | { | |
184 | debug_struct_generic[DINFO_USAGE_DFN] = files; | |
185 | debug_struct_generic[DINFO_USAGE_DIR_USE] = files; | |
186 | debug_struct_generic[DINFO_USAGE_IND_USE] = files; | |
187 | } | |
188 | } | |
189 | else | |
190 | { | |
191 | if (ord) | |
192 | debug_struct_ordinary[usage] = files; | |
193 | if (gen) | |
194 | debug_struct_generic[usage] = files; | |
195 | } | |
196 | ||
197 | if (*spec == ',') | |
198 | set_struct_debug_option (spec+1); | |
199 | else | |
200 | { | |
201 | /* No more -femit-struct-debug-detailed specifications. | |
202 | Do final checks. */ | |
203 | if (*spec != '\0') | |
204 | error ("argument %qs to %<-femit-struct-debug-detailed%> unknown", | |
205 | spec); | |
206 | if (debug_struct_ordinary[DINFO_USAGE_DIR_USE] | |
207 | < debug_struct_ordinary[DINFO_USAGE_IND_USE] | |
208 | || debug_struct_generic[DINFO_USAGE_DIR_USE] | |
209 | < debug_struct_generic[DINFO_USAGE_IND_USE]) | |
210 | error ("%<-femit-struct-debug-detailed=dir:...%> must allow at least" | |
211 | " as much as %<-femit-struct-debug-detailed=ind:...%>"); | |
212 | } | |
213 | } | |
214 | ||
215 | /* Find the base name of a path, stripping off both directories and | |
216 | a single final extension. */ | |
217 | static int | |
218 | base_of_path (const char *path, const char **base_out) | |
219 | { | |
220 | const char *base = path; | |
221 | const char *dot = 0; | |
222 | const char *p = path; | |
223 | char c = *p; | |
224 | while (c) | |
225 | { | |
226 | if (IS_DIR_SEPARATOR(c)) | |
227 | { | |
228 | base = p + 1; | |
229 | dot = 0; | |
230 | } | |
231 | else if (c == '.') | |
232 | dot = p; | |
233 | c = *++p; | |
234 | } | |
235 | if (!dot) | |
236 | dot = p; | |
237 | *base_out = base; | |
238 | return dot - base; | |
239 | } | |
240 | ||
241 | /* Match the base name of a file to the base name of a compilation unit. */ | |
242 | ||
243 | static const char *main_input_basename; | |
244 | static int main_input_baselength; | |
245 | ||
246 | static int | |
247 | matches_main_base (const char *path) | |
248 | { | |
249 | /* Cache the last query. */ | |
250 | static const char *last_path = NULL; | |
251 | static int last_match = 0; | |
252 | if (path != last_path) | |
253 | { | |
254 | const char *base; | |
255 | int length = base_of_path (path, &base); | |
256 | last_path = path; | |
257 | last_match = (length == main_input_baselength | |
258 | && memcmp (base, main_input_basename, length) == 0); | |
259 | } | |
260 | return last_match; | |
261 | } | |
262 | ||
263 | #ifdef DEBUG_DEBUG_STRUCT | |
264 | ||
265 | static int | |
266 | dump_struct_debug (tree type, enum debug_info_usage usage, | |
267 | enum debug_struct_file criterion, int generic, | |
268 | int matches, int result) | |
269 | { | |
270 | /* Find the type name. */ | |
271 | tree type_decl = TYPE_STUB_DECL (type); | |
272 | tree t = type_decl; | |
273 | const char *name = 0; | |
274 | if (TREE_CODE (t) == TYPE_DECL) | |
275 | t = DECL_NAME (t); | |
276 | if (t) | |
277 | name = IDENTIFIER_POINTER (t); | |
278 | ||
279 | fprintf (stderr, " struct %d %s %s %s %s %d %p %s\n", | |
280 | criterion, | |
281 | DECL_IN_SYSTEM_HEADER (type_decl) ? "sys" : "usr", | |
282 | matches ? "bas" : "hdr", | |
283 | generic ? "gen" : "ord", | |
284 | usage == DINFO_USAGE_DFN ? ";" : | |
285 | usage == DINFO_USAGE_DIR_USE ? "." : "*", | |
286 | result, | |
287 | (void*) type_decl, name); | |
288 | return result; | |
289 | } | |
290 | #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
291 | dump_struct_debug (type, usage, criterion, generic, matches, result) | |
292 | ||
293 | #else | |
294 | ||
295 | #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
296 | (result) | |
297 | ||
298 | #endif | |
299 | ||
300 | ||
301 | bool | |
302 | should_emit_struct_debug (tree type, enum debug_info_usage usage) | |
303 | { | |
304 | enum debug_struct_file criterion; | |
305 | tree type_decl; | |
306 | bool generic = lang_hooks.types.generic_p (type); | |
307 | ||
308 | if (generic) | |
309 | criterion = debug_struct_generic[usage]; | |
310 | else | |
311 | criterion = debug_struct_ordinary[usage]; | |
312 | ||
313 | if (criterion == DINFO_STRUCT_FILE_NONE) | |
314 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
315 | if (criterion == DINFO_STRUCT_FILE_ANY) | |
316 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
317 | ||
318 | type_decl = TYPE_STUB_DECL (type); | |
319 | ||
320 | if (criterion == DINFO_STRUCT_FILE_SYS && DECL_IN_SYSTEM_HEADER (type_decl)) | |
321 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
322 | ||
323 | if (matches_main_base (DECL_SOURCE_FILE (type_decl))) | |
324 | return DUMP_GSTRUCT (type, usage, criterion, generic, true, true); | |
325 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
326 | } | |
327 | ||
df38ffef NB |
328 | /* Nonzero means use GNU-only extensions in the generated symbolic |
329 | debugging information. Currently, this only has an effect when | |
330 | write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
331 | bool use_gnu_debug_info_extensions; | |
332 | ||
d7afec4b ND |
333 | /* The default visibility for all symbols (unless overridden) */ |
334 | enum symbol_visibility default_visibility = VISIBILITY_DEFAULT; | |
335 | ||
336 | /* Global visibility options. */ | |
337 | struct visibility_flags visibility_options; | |
338 | ||
2cc98056 NB |
339 | /* What to print when a switch has no documentation. */ |
340 | static const char undocumented_msg[] = N_("This switch lacks documentation"); | |
341 | ||
a8a5f53a JH |
342 | /* Used for bookkeeping on whether user set these flags so |
343 | -fprofile-use/-fprofile-generate does not use them. */ | |
344 | static bool profile_arc_flag_set, flag_profile_values_set; | |
345 | static bool flag_unroll_loops_set, flag_tracer_set; | |
346 | static bool flag_value_profile_transformations_set; | |
347 | static bool flag_peel_loops_set, flag_branch_probabilities_set; | |
ca30a539 | 348 | static bool flag_inline_functions_set, flag_ipa_cp_set, flag_ipa_cp_clone_set; |
8bcf15f6 | 349 | static bool flag_predictive_commoning_set, flag_unswitch_loops_set, flag_gcse_after_reload_set; |
a8a5f53a | 350 | |
8d5a7d1f ILT |
351 | /* Functions excluded from profiling. */ |
352 | ||
353 | typedef char *char_p; /* For DEF_VEC_P. */ | |
354 | DEF_VEC_P(char_p); | |
355 | DEF_VEC_ALLOC_P(char_p,heap); | |
356 | ||
357 | static VEC(char_p,heap) *flag_instrument_functions_exclude_functions; | |
358 | static VEC(char_p,heap) *flag_instrument_functions_exclude_files; | |
359 | ||
369dcbd9 MLI |
360 | typedef const char *const_char_p; /* For DEF_VEC_P. */ |
361 | DEF_VEC_P(const_char_p); | |
362 | DEF_VEC_ALLOC_P(const_char_p,heap); | |
363 | ||
364 | static VEC(const_char_p,heap) *ignored_options; | |
365 | ||
a406865a RG |
366 | /* Language specific warning pass for unused results. */ |
367 | bool flag_warn_unused_result = false; | |
368 | ||
59e4e217 | 369 | /* Input file names. */ |
40e941af PB |
370 | const char **in_fnames; |
371 | unsigned num_in_fnames; | |
372 | ||
79cf5994 DD |
373 | static int common_handle_option (size_t scode, const char *arg, int value, |
374 | unsigned int lang_mask); | |
903caebf | 375 | static void handle_param (const char *); |
b86f6cd9 | 376 | static unsigned int handle_option (const char **argv, unsigned int lang_mask); |
f18754d6 NB |
377 | static char *write_langs (unsigned int lang_mask); |
378 | static void complain_wrong_lang (const char *, const struct cl_option *, | |
379 | unsigned int lang_mask); | |
b86f6cd9 | 380 | static void handle_options (unsigned int, const char **, unsigned int); |
df38ffef NB |
381 | static void set_debug_level (enum debug_info_type type, int extended, |
382 | const char *arg); | |
2772ef3e | 383 | |
e01cc6dc | 384 | /* If ARG is a non-negative integer made up solely of digits, return its |
7b086b11 NB |
385 | value, otherwise return -1. */ |
386 | static int | |
387 | integral_argument (const char *arg) | |
388 | { | |
389 | const char *p = arg; | |
390 | ||
391 | while (*p && ISDIGIT (*p)) | |
392 | p++; | |
393 | ||
394 | if (*p == '\0') | |
395 | return atoi (arg); | |
396 | ||
397 | return -1; | |
398 | } | |
399 | ||
f18754d6 NB |
400 | /* Return a malloced slash-separated list of languages in MASK. */ |
401 | static char * | |
402 | write_langs (unsigned int mask) | |
403 | { | |
404 | unsigned int n = 0, len = 0; | |
405 | const char *lang_name; | |
406 | char *result; | |
407 | ||
408 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
409 | if (mask & (1U << n)) | |
410 | len += strlen (lang_name) + 1; | |
411 | ||
5ed6ace5 | 412 | result = XNEWVEC (char, len); |
f18754d6 NB |
413 | len = 0; |
414 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
415 | if (mask & (1U << n)) | |
416 | { | |
417 | if (len) | |
418 | result[len++] = '/'; | |
419 | strcpy (result + len, lang_name); | |
420 | len += strlen (lang_name); | |
421 | } | |
422 | ||
423 | result[len] = 0; | |
424 | ||
425 | return result; | |
426 | } | |
427 | ||
428 | /* Complain that switch OPT_INDEX does not apply to this front end. */ | |
429 | static void | |
430 | complain_wrong_lang (const char *text, const struct cl_option *option, | |
431 | unsigned int lang_mask) | |
432 | { | |
433 | char *ok_langs, *bad_lang; | |
434 | ||
435 | ok_langs = write_langs (option->flags); | |
436 | bad_lang = write_langs (lang_mask); | |
437 | ||
438 | /* Eventually this should become a hard error IMO. */ | |
d4ee4d25 | 439 | warning (0, "command line option \"%s\" is valid for %s but not for %s", |
f18754d6 NB |
440 | text, ok_langs, bad_lang); |
441 | ||
442 | free (ok_langs); | |
443 | free (bad_lang); | |
444 | } | |
445 | ||
369dcbd9 MLI |
446 | /* Buffer the unknown option described by the string OPT. Currently, |
447 | we only complain about unknown -Wno-* options if they may have | |
15e1dac0 PM |
448 | prevented a diagnostic. Otherwise, we just ignore them. |
449 | Note that if we do complain, it is only as a warning, not an error; | |
450 | passing the compiler an unrecognised -Wno-* option should never | |
451 | change whether the compilation succeeds or fails. */ | |
369dcbd9 | 452 | |
15e1dac0 | 453 | static void postpone_unknown_option_warning(const char *opt) |
369dcbd9 MLI |
454 | { |
455 | VEC_safe_push (const_char_p, heap, ignored_options, opt); | |
456 | } | |
457 | ||
15e1dac0 | 458 | /* Produce a warning for each option previously buffered. */ |
369dcbd9 MLI |
459 | |
460 | void print_ignored_options (void) | |
461 | { | |
462 | location_t saved_loc = input_location; | |
463 | ||
464 | input_location = 0; | |
465 | ||
466 | while (!VEC_empty (const_char_p, ignored_options)) | |
467 | { | |
468 | const char *opt; | |
469 | opt = VEC_pop (const_char_p, ignored_options); | |
15e1dac0 | 470 | warning (0, "unrecognized command line option \"%s\"", opt); |
369dcbd9 MLI |
471 | } |
472 | ||
473 | input_location = saved_loc; | |
474 | } | |
475 | ||
f18754d6 NB |
476 | /* Handle the switch beginning at ARGV for the language indicated by |
477 | LANG_MASK. Returns the number of switches consumed. */ | |
478 | static unsigned int | |
b86f6cd9 | 479 | handle_option (const char **argv, unsigned int lang_mask) |
2772ef3e NB |
480 | { |
481 | size_t opt_index; | |
482 | const char *opt, *arg = 0; | |
483 | char *dup = 0; | |
7b086b11 | 484 | int value = 1; |
f18754d6 | 485 | unsigned int result = 0; |
2772ef3e NB |
486 | const struct cl_option *option; |
487 | ||
2772ef3e NB |
488 | opt = argv[0]; |
489 | ||
75685792 RS |
490 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
491 | if (opt_index == cl_options_count | |
492 | && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') | |
cb66e385 | 493 | && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') |
2772ef3e | 494 | { |
75685792 | 495 | /* Drop the "no-" from negative switches. */ |
cb66e385 NB |
496 | size_t len = strlen (opt) - 3; |
497 | ||
5ed6ace5 | 498 | dup = XNEWVEC (char, len + 1); |
cb66e385 NB |
499 | dup[0] = '-'; |
500 | dup[1] = opt[1]; | |
501 | memcpy (dup + 2, opt + 5, len - 2 + 1); | |
502 | opt = dup; | |
503 | value = 0; | |
75685792 | 504 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
ee8ea087 | 505 | if (opt_index == cl_options_count && opt[1] == 'W') |
369dcbd9 | 506 | { |
15e1dac0 | 507 | /* We don't generate warnings for unknown -Wno-* options |
369dcbd9 | 508 | unless we issue diagnostics. */ |
15e1dac0 | 509 | postpone_unknown_option_warning (argv[0]); |
369dcbd9 MLI |
510 | result = 1; |
511 | goto done; | |
512 | } | |
2772ef3e | 513 | } |
2772ef3e | 514 | |
cb66e385 | 515 | if (opt_index == cl_options_count) |
bacf5b96 | 516 | goto done; |
2772ef3e | 517 | |
cb66e385 | 518 | option = &cl_options[opt_index]; |
2772ef3e | 519 | |
cb66e385 NB |
520 | /* Reject negative form of switches that don't take negatives as |
521 | unrecognized. */ | |
522 | if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
523 | goto done; | |
2772ef3e | 524 | |
cb66e385 NB |
525 | /* We've recognized this switch. */ |
526 | result = 1; | |
2772ef3e | 527 | |
aeb70e78 RS |
528 | /* Check to see if the option is disabled for this configuration. */ |
529 | if (option->flags & CL_DISABLED) | |
530 | { | |
531 | error ("command line option %qs" | |
532 | " is not supported by this configuration", opt); | |
533 | goto done; | |
534 | } | |
535 | ||
cb66e385 NB |
536 | /* Sort out any argument the switch takes. */ |
537 | if (option->flags & CL_JOINED) | |
538 | { | |
539 | /* Have arg point to the original switch. This is because | |
540 | some code, such as disable_builtin_function, expects its | |
541 | argument to be persistent until the program exits. */ | |
542 | arg = argv[0] + cl_options[opt_index].opt_len + 1; | |
543 | if (!value) | |
544 | arg += strlen ("no-"); | |
545 | ||
546 | if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
2772ef3e | 547 | { |
cb66e385 | 548 | if (option->flags & CL_SEPARATE) |
2772ef3e | 549 | { |
cb66e385 NB |
550 | arg = argv[1]; |
551 | result = 2; | |
2772ef3e | 552 | } |
cb66e385 NB |
553 | else |
554 | /* Missing argument. */ | |
555 | arg = NULL; | |
7b086b11 | 556 | } |
cb66e385 NB |
557 | } |
558 | else if (option->flags & CL_SEPARATE) | |
559 | { | |
560 | arg = argv[1]; | |
561 | result = 2; | |
562 | } | |
2772ef3e | 563 | |
cb66e385 NB |
564 | /* Now we've swallowed any potential argument, complain if this |
565 | is a switch for a different front end. */ | |
75685792 | 566 | if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET))) |
cb66e385 NB |
567 | { |
568 | complain_wrong_lang (argv[0], option, lang_mask); | |
569 | goto done; | |
570 | } | |
1f1d5130 MS |
571 | else if ((option->flags & CL_TARGET) |
572 | && (option->flags & CL_LANG_ALL) | |
573 | && !(option->flags & lang_mask)) | |
574 | { | |
575 | /* Complain for target flag language mismatches if any languages | |
576 | are specified. */ | |
577 | complain_wrong_lang (argv[0], option, lang_mask); | |
578 | goto done; | |
579 | } | |
f18754d6 | 580 | |
cb66e385 NB |
581 | if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE))) |
582 | { | |
ae2bcd98 | 583 | if (!lang_hooks.missing_argument (opt, opt_index)) |
cb66e385 NB |
584 | error ("missing argument to \"%s\"", opt); |
585 | goto done; | |
586 | } | |
9eee5e72 | 587 | |
cb66e385 NB |
588 | /* If the switch takes an integer, convert it. */ |
589 | if (arg && (option->flags & CL_UINTEGER)) | |
590 | { | |
591 | value = integral_argument (arg); | |
592 | if (value == -1) | |
7b086b11 | 593 | { |
cf03fd63 | 594 | error ("argument to \"%s\" should be a non-negative integer", |
cb66e385 NB |
595 | option->opt_text); |
596 | goto done; | |
2772ef3e | 597 | } |
cb66e385 | 598 | } |
2772ef3e | 599 | |
50431bc4 | 600 | if (option->flag_var) |
55bea00a | 601 | switch (option->var_type) |
75685792 RS |
602 | { |
603 | case CLVC_BOOLEAN: | |
55bea00a | 604 | *(int *) option->flag_var = value; |
75685792 RS |
605 | break; |
606 | ||
607 | case CLVC_EQUAL: | |
55bea00a RS |
608 | *(int *) option->flag_var = (value |
609 | ? option->var_value | |
610 | : !option->var_value); | |
75685792 RS |
611 | break; |
612 | ||
613 | case CLVC_BIT_CLEAR: | |
614 | case CLVC_BIT_SET: | |
55bea00a RS |
615 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) |
616 | *(int *) option->flag_var |= option->var_value; | |
75685792 | 617 | else |
55bea00a | 618 | *(int *) option->flag_var &= ~option->var_value; |
75685792 RS |
619 | if (option->flag_var == &target_flags) |
620 | target_flags_explicit |= option->var_value; | |
621 | break; | |
55bea00a RS |
622 | |
623 | case CLVC_STRING: | |
624 | *(const char **) option->flag_var = arg; | |
625 | break; | |
75685792 | 626 | } |
c662432e | 627 | |
cb66e385 | 628 | if (option->flags & lang_mask) |
ae2bcd98 | 629 | if (lang_hooks.handle_option (opt_index, arg, value) == 0) |
cb66e385 | 630 | result = 0; |
d7b42618 | 631 | |
cb66e385 | 632 | if (result && (option->flags & CL_COMMON)) |
79cf5994 | 633 | if (common_handle_option (opt_index, arg, value, lang_mask) == 0) |
cb66e385 | 634 | result = 0; |
2772ef3e | 635 | |
75685792 RS |
636 | if (result && (option->flags & CL_TARGET)) |
637 | if (!targetm.handle_option (opt_index, arg, value)) | |
638 | result = 0; | |
639 | ||
2772ef3e NB |
640 | done: |
641 | if (dup) | |
642 | free (dup); | |
643 | return result; | |
644 | } | |
d7b42618 | 645 | |
2715d4a3 BE |
646 | /* Handle FILENAME from the command line. */ |
647 | static void | |
648 | add_input_filename (const char *filename) | |
649 | { | |
650 | num_in_fnames++; | |
d3bfe4de | 651 | in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames); |
2715d4a3 BE |
652 | in_fnames[num_in_fnames - 1] = filename; |
653 | } | |
654 | ||
1ebc7e68 | 655 | /* Add comma-separated strings to a char_p vector. */ |
8d5a7d1f ILT |
656 | |
657 | static void | |
1ebc7e68 | 658 | add_comma_separated_to_vector (VEC(char_p,heap) **pvec, const char* arg) |
8d5a7d1f ILT |
659 | { |
660 | char *tmp; | |
661 | char *r; | |
662 | char *w; | |
663 | char *token_start; | |
664 | ||
665 | /* We never free this string. */ | |
666 | tmp = xstrdup (arg); | |
667 | ||
668 | r = tmp; | |
669 | w = tmp; | |
670 | token_start = tmp; | |
671 | ||
672 | while (*r != '\0') | |
673 | { | |
674 | if (*r == ',') | |
675 | { | |
676 | *w++ = '\0'; | |
677 | ++r; | |
678 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
679 | token_start = w; | |
680 | } | |
681 | if (*r == '\\' && r[1] == ',') | |
682 | { | |
683 | *w++ = ','; | |
684 | r += 2; | |
685 | } | |
686 | else | |
687 | *w++ = *r++; | |
688 | } | |
689 | if (*token_start != '\0') | |
690 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
691 | } | |
692 | ||
693 | /* Return whether we should exclude FNDECL from instrumentation. */ | |
694 | ||
695 | bool | |
696 | flag_instrument_functions_exclude_p (tree fndecl) | |
697 | { | |
698 | if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0) | |
699 | { | |
700 | const char *name; | |
701 | int i; | |
702 | char *s; | |
703 | ||
704 | name = lang_hooks.decl_printable_name (fndecl, 0); | |
705 | for (i = 0; | |
706 | VEC_iterate (char_p, flag_instrument_functions_exclude_functions, | |
707 | i, s); | |
708 | ++i) | |
709 | { | |
710 | if (strstr (name, s) != NULL) | |
711 | return true; | |
712 | } | |
713 | } | |
714 | ||
715 | if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0) | |
716 | { | |
717 | const char *name; | |
718 | int i; | |
719 | char *s; | |
720 | ||
721 | name = DECL_SOURCE_FILE (fndecl); | |
722 | for (i = 0; | |
723 | VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s); | |
724 | ++i) | |
725 | { | |
726 | if (strstr (name, s) != NULL) | |
727 | return true; | |
728 | } | |
729 | } | |
730 | ||
731 | return false; | |
732 | } | |
733 | ||
1ebc7e68 | 734 | |
f18754d6 NB |
735 | /* Decode and handle the vector of command line options. LANG_MASK |
736 | contains has a single bit set representing the current | |
737 | language. */ | |
9756310a | 738 | static void |
b86f6cd9 | 739 | handle_options (unsigned int argc, const char **argv, unsigned int lang_mask) |
f18754d6 NB |
740 | { |
741 | unsigned int n, i; | |
742 | ||
743 | for (i = 1; i < argc; i += n) | |
744 | { | |
cb66e385 NB |
745 | const char *opt = argv[i]; |
746 | ||
747 | /* Interpret "-" or a non-switch as a file name. */ | |
748 | if (opt[0] != '-' || opt[1] == '\0') | |
749 | { | |
8e9ea4d7 | 750 | if (main_input_filename == NULL) |
39ef6592 | 751 | { |
b3eaaf1a | 752 | main_input_filename = opt; |
39ef6592 LC |
753 | main_input_baselength |
754 | = base_of_path (main_input_filename, &main_input_basename); | |
755 | } | |
40e941af | 756 | add_input_filename (opt); |
cb66e385 NB |
757 | n = 1; |
758 | continue; | |
759 | } | |
760 | ||
f18754d6 NB |
761 | n = handle_option (argv + i, lang_mask); |
762 | ||
763 | if (!n) | |
764 | { | |
765 | n = 1; | |
cb66e385 | 766 | error ("unrecognized command line option \"%s\"", opt); |
f18754d6 NB |
767 | } |
768 | } | |
769 | } | |
770 | ||
9756310a NB |
771 | /* Parse command line options and set default flag values. Do minimal |
772 | options processing. */ | |
773 | void | |
b86f6cd9 | 774 | decode_options (unsigned int argc, const char **argv) |
9756310a | 775 | { |
ab442df7 | 776 | static bool first_time_p = true; |
ab442df7 MM |
777 | static int initial_min_crossjump_insns; |
778 | static int initial_max_fields_for_field_sensitive; | |
b1fb9f56 | 779 | static int initial_loop_invariant_max_bbs_in_loop; |
ab442df7 | 780 | static unsigned int initial_lang_mask; |
9756310a | 781 | |
ab442df7 MM |
782 | unsigned int i, lang_mask; |
783 | int opt1; | |
784 | int opt2; | |
785 | int opt3; | |
786 | int opt1_max; | |
9756310a | 787 | |
ab442df7 MM |
788 | if (first_time_p) |
789 | { | |
790 | /* Perform language-specific options initialization. */ | |
791 | initial_lang_mask = lang_mask = lang_hooks.init_options (argc, argv); | |
792 | ||
793 | lang_hooks.initialize_diagnostics (global_dc); | |
794 | ||
795 | /* Save initial values of parameters we reset. */ | |
ab442df7 MM |
796 | initial_min_crossjump_insns |
797 | = compiler_params[PARAM_MIN_CROSSJUMP_INSNS].value; | |
798 | initial_max_fields_for_field_sensitive | |
799 | = compiler_params[PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE].value; | |
b1fb9f56 JJ |
800 | initial_loop_invariant_max_bbs_in_loop |
801 | = compiler_params[PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP].value; | |
ab442df7 MM |
802 | } |
803 | else | |
804 | lang_mask = initial_lang_mask; | |
21ecc5a7 | 805 | |
9756310a NB |
806 | /* Scan to see what optimization level has been specified. That will |
807 | determine the default value of many flags. */ | |
808 | for (i = 1; i < argc; i++) | |
809 | { | |
810 | if (!strcmp (argv[i], "-O")) | |
811 | { | |
812 | optimize = 1; | |
813 | optimize_size = 0; | |
814 | } | |
815 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
816 | { | |
817 | /* Handle -Os, -O2, -O3, -O69, ... */ | |
b86f6cd9 | 818 | const char *p = &argv[i][2]; |
9756310a NB |
819 | |
820 | if ((p[0] == 's') && (p[1] == 0)) | |
821 | { | |
822 | optimize_size = 1; | |
823 | ||
824 | /* Optimizing for size forces optimize to be 2. */ | |
825 | optimize = 2; | |
826 | } | |
827 | else | |
828 | { | |
829 | const int optimize_val = read_integral_parameter (p, p - 2, -1); | |
830 | if (optimize_val != -1) | |
831 | { | |
832 | optimize = optimize_val; | |
833 | optimize_size = 0; | |
834 | } | |
835 | } | |
836 | } | |
837 | } | |
7e8b322a | 838 | |
7db7ed3c VM |
839 | /* Use priority coloring if cover classes is not defined for the |
840 | target. */ | |
841 | if (targetm.ira_cover_classes == NULL) | |
842 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
058e97ec | 843 | |
ab442df7 MM |
844 | /* -O1 optimizations. */ |
845 | opt1 = (optimize >= 1); | |
846 | flag_defer_pop = opt1; | |
9756310a | 847 | #ifdef DELAY_SLOTS |
ab442df7 | 848 | flag_delayed_branch = opt1; |
9756310a NB |
849 | #endif |
850 | #ifdef CAN_DEBUG_WITHOUT_FP | |
ab442df7 | 851 | flag_omit_frame_pointer = opt1; |
9756310a | 852 | #endif |
ab442df7 MM |
853 | flag_guess_branch_prob = opt1; |
854 | flag_cprop_registers = opt1; | |
00952e97 | 855 | flag_forward_propagate = opt1; |
ab442df7 MM |
856 | flag_if_conversion = opt1; |
857 | flag_if_conversion2 = opt1; | |
858 | flag_ipa_pure_const = opt1; | |
859 | flag_ipa_reference = opt1; | |
57b08d04 | 860 | flag_merge_constants = opt1; |
ab442df7 MM |
861 | flag_split_wide_types = opt1; |
862 | flag_tree_ccp = opt1; | |
863 | flag_tree_dce = opt1; | |
864 | flag_tree_dom = opt1; | |
865 | flag_tree_dse = opt1; | |
866 | flag_tree_ter = opt1; | |
867 | flag_tree_sra = opt1; | |
868 | flag_tree_copyrename = opt1; | |
869 | flag_tree_fre = opt1; | |
870 | flag_tree_copy_prop = opt1; | |
871 | flag_tree_sink = opt1; | |
872 | flag_tree_ch = opt1; | |
873 | ||
874 | /* -O2 optimizations. */ | |
875 | opt2 = (optimize >= 2); | |
876 | flag_inline_small_functions = opt2; | |
3e293154 | 877 | flag_indirect_inlining = opt2; |
ab442df7 MM |
878 | flag_thread_jumps = opt2; |
879 | flag_crossjumping = opt2; | |
880 | flag_optimize_sibling_calls = opt2; | |
ab442df7 MM |
881 | flag_cse_follow_jumps = opt2; |
882 | flag_gcse = opt2; | |
883 | flag_expensive_optimizations = opt2; | |
884 | flag_rerun_cse_after_loop = opt2; | |
885 | flag_caller_saves = opt2; | |
886 | flag_peephole2 = opt2; | |
9756310a | 887 | #ifdef INSN_SCHEDULING |
ab442df7 MM |
888 | flag_schedule_insns = opt2; |
889 | flag_schedule_insns_after_reload = opt2; | |
9756310a | 890 | #endif |
ab442df7 MM |
891 | flag_regmove = opt2; |
892 | flag_strict_aliasing = opt2; | |
893 | flag_strict_overflow = opt2; | |
ab442df7 MM |
894 | flag_reorder_blocks = opt2; |
895 | flag_reorder_functions = opt2; | |
ab442df7 MM |
896 | flag_tree_vrp = opt2; |
897 | flag_tree_builtin_call_dce = opt2; | |
898 | flag_tree_pre = opt2; | |
fcbe056b JH |
899 | flag_tree_switch_conversion = 1; |
900 | flag_ipa_cp = opt2; | |
116cb604 | 901 | |
ab442df7 MM |
902 | /* Track fields in field-sensitive alias analysis. */ |
903 | set_param_value ("max-fields-for-field-sensitive", | |
904 | (opt2) ? 100 : initial_max_fields_for_field_sensitive); | |
e9e0aa2c | 905 | |
b1fb9f56 JJ |
906 | /* For -O1 only do loop invariant motion for very small loops. */ |
907 | set_param_value ("loop-invariant-max-bbs-in-loop", | |
908 | (opt2) ? initial_loop_invariant_max_bbs_in_loop : 1000); | |
909 | ||
ab442df7 MM |
910 | /* -O3 optimizations. */ |
911 | opt3 = (optimize >= 3); | |
912 | flag_predictive_commoning = opt3; | |
913 | flag_inline_functions = opt3; | |
914 | flag_unswitch_loops = opt3; | |
915 | flag_gcse_after_reload = opt3; | |
916 | flag_tree_vectorize = opt3; | |
fcbe056b JH |
917 | flag_ipa_cp_clone = opt3; |
918 | if (flag_ipa_cp_clone) | |
919 | flag_ipa_cp = 1; | |
ab442df7 | 920 | |
ab442df7 MM |
921 | /* Just -O1/-O0 optimizations. */ |
922 | opt1_max = (optimize <= 1); | |
923 | align_loops = opt1_max; | |
924 | align_jumps = opt1_max; | |
925 | align_labels = opt1_max; | |
926 | align_functions = opt1_max; | |
927 | ||
928 | if (optimize_size) | |
9756310a | 929 | { |
ab442df7 MM |
930 | /* Inlining of functions reducing size is a good idea regardless of them |
931 | being declared inline. */ | |
932 | flag_inline_functions = 1; | |
933 | ||
ab442df7 MM |
934 | /* Basic optimization options. */ |
935 | optimize_size = 1; | |
936 | if (optimize > 2) | |
937 | optimize = 2; | |
fe94b653 RE |
938 | |
939 | /* We want to crossjump as much as possible. */ | |
940 | set_param_value ("min-crossjump-insns", 1); | |
f736cb3e | 941 | } |
ab442df7 MM |
942 | else |
943 | set_param_value ("min-crossjump-insns", initial_min_crossjump_insns); | |
f736cb3e | 944 | |
ab442df7 MM |
945 | if (first_time_p) |
946 | { | |
947 | /* Initialize whether `char' is signed. */ | |
948 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
949 | /* Set this to a special "uninitialized" value. The actual default is | |
950 | set after target options have been processed. */ | |
951 | flag_short_enums = 2; | |
952 | ||
953 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can | |
954 | modify it. */ | |
955 | target_flags = targetm.default_target_flags; | |
956 | ||
957 | /* Some targets have ABI-specified unwind tables. */ | |
958 | flag_unwind_tables = targetm.unwind_tables_default; | |
959 | } | |
9756310a NB |
960 | |
961 | #ifdef OPTIMIZATION_OPTIONS | |
962 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
963 | OPTIMIZATION_OPTIONS (optimize, optimize_size); | |
964 | #endif | |
965 | ||
966 | handle_options (argc, argv, lang_mask); | |
967 | ||
e71da632 MH |
968 | /* Make DUMP_BASE_NAME relative to the AUX_BASE_NAME directory, |
969 | typically the directory to contain the object file. */ | |
970 | if (aux_base_name && ! IS_ABSOLUTE_PATH (dump_base_name)) | |
971 | { | |
972 | const char *aux_base; | |
973 | ||
974 | base_of_path (aux_base_name, &aux_base); | |
975 | if (aux_base_name != aux_base) | |
976 | { | |
977 | int dir_len = aux_base - aux_base_name; | |
978 | char *new_dump_base_name = | |
979 | XNEWVEC (char, strlen(dump_base_name) + dir_len + 1); | |
980 | ||
981 | /* Copy directory component from AUX_BASE_NAME. */ | |
982 | memcpy (new_dump_base_name, aux_base_name, dir_len); | |
983 | /* Append existing DUMP_BASE_NAME. */ | |
984 | strcpy (new_dump_base_name + dir_len, dump_base_name); | |
985 | dump_base_name = new_dump_base_name; | |
986 | } | |
987 | } | |
988 | ||
93a4f5e0 JJ |
989 | /* Handle related options for unit-at-a-time, toplevel-reorder, and |
990 | section-anchors. */ | |
57b08d04 ST |
991 | if (!flag_unit_at_a_time) |
992 | { | |
93a4f5e0 JJ |
993 | if (flag_section_anchors == 1) |
994 | error ("Section anchors must be disabled when unit-at-a-time " | |
995 | "is disabled."); | |
57b08d04 | 996 | flag_section_anchors = 0; |
93a4f5e0 JJ |
997 | if (flag_toplevel_reorder == 1) |
998 | error ("Toplevel reorder must be disabled when unit-at-a-time " | |
999 | "is disabled."); | |
57b08d04 ST |
1000 | flag_toplevel_reorder = 0; |
1001 | } | |
5ffebee7 JJ |
1002 | /* Unless the user has asked for section anchors, we disable toplevel |
1003 | reordering at -O0 to disable transformations that might be surprising | |
1004 | to end users and to get -fno-toplevel-reorder tested. */ | |
1005 | if (!optimize && flag_toplevel_reorder == 2 && flag_section_anchors != 1) | |
93a4f5e0 | 1006 | { |
5ffebee7 JJ |
1007 | flag_toplevel_reorder = 0; |
1008 | flag_section_anchors = 0; | |
93a4f5e0 JJ |
1009 | } |
1010 | if (!flag_toplevel_reorder) | |
57b08d04 ST |
1011 | { |
1012 | if (flag_section_anchors == 1) | |
93a4f5e0 JJ |
1013 | error ("section anchors must be disabled when toplevel reorder" |
1014 | " is disabled"); | |
57b08d04 ST |
1015 | flag_section_anchors = 0; |
1016 | } | |
1017 | ||
ab442df7 MM |
1018 | if (first_time_p) |
1019 | { | |
1020 | if (flag_pie) | |
1021 | flag_pic = flag_pie; | |
1022 | if (flag_pic && !flag_pie) | |
1023 | flag_shlib = 1; | |
ab442df7 | 1024 | } |
9756310a | 1025 | |
9756310a NB |
1026 | if (optimize == 0) |
1027 | { | |
1028 | /* Inlining does not work if not optimizing, | |
1029 | so force it not to be done. */ | |
9756310a | 1030 | warn_inline = 0; |
e90acd93 | 1031 | flag_no_inline = 1; |
9756310a NB |
1032 | } |
1033 | ||
750054a2 CT |
1034 | /* The optimization to partition hot and cold basic blocks into separate |
1035 | sections of the .o and executable files does not work (currently) | |
e395963f JW |
1036 | with exception handling. This is because there is no support for |
1037 | generating unwind info. If flag_exceptions is turned on we need to | |
750054a2 CT |
1038 | turn off the partitioning optimization. */ |
1039 | ||
17f6e37d JJ |
1040 | if (flag_exceptions && flag_reorder_blocks_and_partition |
1041 | && (USING_SJLJ_EXCEPTIONS | |
1042 | #ifdef TARGET_UNWIND_INFO | |
1043 | || 1 | |
1044 | #endif | |
1045 | )) | |
750054a2 | 1046 | { |
1f5b3869 | 1047 | inform (input_location, |
17f6e37d | 1048 | "-freorder-blocks-and-partition does not work with exceptions on this architecture"); |
750054a2 CT |
1049 | flag_reorder_blocks_and_partition = 0; |
1050 | flag_reorder_blocks = 1; | |
1051 | } | |
c7466dee | 1052 | |
e395963f JW |
1053 | /* If user requested unwind info, then turn off the partitioning |
1054 | optimization. */ | |
1055 | ||
1056 | if (flag_unwind_tables && ! targetm.unwind_tables_default | |
17f6e37d JJ |
1057 | && flag_reorder_blocks_and_partition |
1058 | && (USING_SJLJ_EXCEPTIONS | |
1059 | #ifdef TARGET_UNWIND_INFO | |
1060 | || 1 | |
1061 | #endif | |
1062 | )) | |
e395963f | 1063 | { |
17f6e37d JJ |
1064 | inform (input_location, |
1065 | "-freorder-blocks-and-partition does not support unwind info on this architecture"); | |
e395963f JW |
1066 | flag_reorder_blocks_and_partition = 0; |
1067 | flag_reorder_blocks = 1; | |
1068 | } | |
1069 | ||
1070 | /* If the target requested unwind info, then turn off the partitioning | |
1071 | optimization with a different message. Likewise, if the target does not | |
1072 | support named sections. */ | |
1073 | ||
c7466dee | 1074 | if (flag_reorder_blocks_and_partition |
e395963f | 1075 | && (!targetm.have_named_sections |
17f6e37d JJ |
1076 | || (flag_unwind_tables && targetm.unwind_tables_default |
1077 | && (USING_SJLJ_EXCEPTIONS | |
1078 | #ifdef TARGET_UNWIND_INFO | |
1079 | || 1 | |
1080 | #endif | |
1081 | )))) | |
c7466dee | 1082 | { |
1f5b3869 MLI |
1083 | inform (input_location, |
1084 | "-freorder-blocks-and-partition does not work on this architecture"); | |
c7466dee CT |
1085 | flag_reorder_blocks_and_partition = 0; |
1086 | flag_reorder_blocks = 1; | |
1087 | } | |
ab442df7 | 1088 | |
e855c69d AB |
1089 | /* Pipelining of outer loops is only possible when general pipelining |
1090 | capabilities are requested. */ | |
1091 | if (!flag_sel_sched_pipelining) | |
1092 | flag_sel_sched_pipelining_outer_loops = 0; | |
1093 | ||
2af2dbdc | 1094 | if (!targetm.ira_cover_classes |
7db7ed3c | 1095 | && flag_ira_algorithm == IRA_ALGORITHM_CB) |
058e97ec | 1096 | { |
7db7ed3c VM |
1097 | inform (input_location, |
1098 | "-fira-algorithm=CB does not work on this architecture"); | |
1099 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
058e97ec | 1100 | } |
058e97ec | 1101 | |
ab442df7 MM |
1102 | /* Save the current optimization options if this is the first call. */ |
1103 | if (first_time_p) | |
1104 | { | |
1105 | optimization_default_node = build_optimization_node (); | |
1106 | optimization_current_node = optimization_default_node; | |
1107 | first_time_p = false; | |
1108 | } | |
6a78eaa3 JH |
1109 | if (flag_conserve_stack) |
1110 | { | |
1111 | if (!PARAM_SET_P (PARAM_LARGE_STACK_FRAME)) | |
1112 | PARAM_VALUE (PARAM_LARGE_STACK_FRAME) = 100; | |
1113 | if (!PARAM_SET_P (PARAM_STACK_FRAME_GROWTH)) | |
1114 | PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40; | |
1115 | } | |
1116 | ||
9756310a NB |
1117 | } |
1118 | ||
c662432e NC |
1119 | #define LEFT_COLUMN 27 |
1120 | ||
1121 | /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
1122 | followed by word-wrapped HELP in a second column. */ | |
1123 | static void | |
1124 | wrap_help (const char *help, | |
1125 | const char *item, | |
1126 | unsigned int item_width, | |
1127 | unsigned int columns) | |
1128 | { | |
1129 | unsigned int col_width = LEFT_COLUMN; | |
1130 | unsigned int remaining, room, len; | |
1131 | ||
1132 | remaining = strlen (help); | |
1133 | ||
1134 | do | |
1135 | { | |
1136 | room = columns - 3 - MAX (col_width, item_width); | |
1137 | if (room > columns) | |
1138 | room = 0; | |
1139 | len = remaining; | |
1140 | ||
1141 | if (room < len) | |
1142 | { | |
1143 | unsigned int i; | |
1144 | ||
1145 | for (i = 0; help[i]; i++) | |
1146 | { | |
1147 | if (i >= room && len != remaining) | |
1148 | break; | |
1149 | if (help[i] == ' ') | |
1150 | len = i; | |
1151 | else if ((help[i] == '-' || help[i] == '/') | |
1152 | && help[i + 1] != ' ' | |
1153 | && i > 0 && ISALPHA (help[i - 1])) | |
1154 | len = i + 1; | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | printf( " %-*.*s %.*s\n", col_width, item_width, item, len, help); | |
1159 | item_width = 0; | |
1160 | while (help[len] == ' ') | |
1161 | len++; | |
1162 | help += len; | |
1163 | remaining -= len; | |
1164 | } | |
1165 | while (remaining); | |
1166 | } | |
1167 | ||
1168 | /* Print help for a specific front-end, etc. */ | |
1169 | static void | |
1170 | print_filtered_help (unsigned int include_flags, | |
1171 | unsigned int exclude_flags, | |
1172 | unsigned int any_flags, | |
1173 | unsigned int columns) | |
1174 | { | |
1175 | unsigned int i; | |
1176 | const char *help; | |
1177 | static char *printed = NULL; | |
1178 | bool found = false; | |
1179 | bool displayed = false; | |
1180 | ||
1181 | if (include_flags == CL_PARAMS) | |
1182 | { | |
1183 | for (i = 0; i < LAST_PARAM; i++) | |
1184 | { | |
1185 | const char *param = compiler_params[i].option; | |
1186 | ||
1187 | help = compiler_params[i].help; | |
1188 | if (help == NULL || *help == '\0') | |
1189 | { | |
1190 | if (exclude_flags & CL_UNDOCUMENTED) | |
1191 | continue; | |
1192 | help = undocumented_msg; | |
1193 | } | |
1194 | ||
1195 | /* Get the translation. */ | |
1196 | help = _(help); | |
1197 | ||
1198 | wrap_help (help, param, strlen (param), columns); | |
1199 | } | |
1200 | putchar ('\n'); | |
1201 | return; | |
1202 | } | |
1203 | ||
1204 | if (!printed) | |
d3bfe4de | 1205 | printed = XCNEWVAR (char, cl_options_count); |
c662432e NC |
1206 | |
1207 | for (i = 0; i < cl_options_count; i++) | |
1208 | { | |
1209 | static char new_help[128]; | |
1210 | const struct cl_option *option = cl_options + i; | |
1211 | unsigned int len; | |
1212 | const char *opt; | |
1213 | const char *tab; | |
1214 | ||
1215 | if (include_flags == 0 | |
1216 | || ((option->flags & include_flags) != include_flags)) | |
1217 | { | |
1218 | if ((option->flags & any_flags) == 0) | |
1219 | continue; | |
1220 | } | |
1221 | ||
1222 | /* Skip unwanted switches. */ | |
1223 | if ((option->flags & exclude_flags) != 0) | |
1224 | continue; | |
1225 | ||
1226 | found = true; | |
1227 | /* Skip switches that have already been printed. */ | |
1228 | if (printed[i]) | |
1229 | continue; | |
1230 | ||
1231 | printed[i] = true; | |
1232 | ||
1233 | help = option->help; | |
1234 | if (help == NULL) | |
1235 | { | |
1236 | if (exclude_flags & CL_UNDOCUMENTED) | |
1237 | continue; | |
1238 | help = undocumented_msg; | |
1239 | } | |
1240 | ||
1241 | /* Get the translation. */ | |
1242 | help = _(help); | |
1243 | ||
1244 | /* Find the gap between the name of the | |
1245 | option and its descriptive text. */ | |
1246 | tab = strchr (help, '\t'); | |
1247 | if (tab) | |
1248 | { | |
1249 | len = tab - help; | |
1250 | opt = help; | |
1251 | help = tab + 1; | |
1252 | } | |
1253 | else | |
1254 | { | |
1255 | opt = option->opt_text; | |
1256 | len = strlen (opt); | |
1257 | } | |
1258 | ||
1259 | /* With the -Q option enabled we change the descriptive text associated | |
1260 | with an option to be an indication of its current setting. */ | |
1261 | if (!quiet_flag) | |
1262 | { | |
1263 | if (len < (LEFT_COLUMN + 2)) | |
1264 | strcpy (new_help, "\t\t"); | |
1265 | else | |
1266 | strcpy (new_help, "\t"); | |
1267 | ||
1268 | if (option->flag_var != NULL) | |
1269 | { | |
1270 | if (option->flags & CL_JOINED) | |
1271 | { | |
1272 | if (option->var_type == CLVC_STRING) | |
1273 | { | |
1274 | if (* (const char **) option->flag_var != NULL) | |
1275 | snprintf (new_help + strlen (new_help), | |
1276 | sizeof (new_help) - strlen (new_help), | |
1277 | * (const char **) option->flag_var); | |
1278 | } | |
1279 | else | |
1280 | sprintf (new_help + strlen (new_help), | |
1281 | "%#x", * (int *) option->flag_var); | |
1282 | } | |
1283 | else | |
1284 | strcat (new_help, option_enabled (i) | |
1285 | ? _("[enabled]") : _("[disabled]")); | |
1286 | } | |
1287 | ||
1288 | help = new_help; | |
1289 | } | |
1290 | ||
1291 | wrap_help (help, opt, len, columns); | |
1292 | displayed = true; | |
1293 | } | |
1294 | ||
1295 | if (! found) | |
b3eaaf1a NC |
1296 | { |
1297 | unsigned int langs = include_flags & CL_LANG_ALL; | |
1298 | ||
1299 | if (langs == 0) | |
1300 | printf (_(" No options with the desired characteristics were found\n")); | |
1301 | else | |
1302 | { | |
1303 | unsigned int i; | |
1304 | ||
1305 | /* PR 31349: Tell the user how to see all of the | |
1306 | options supported by a specific front end. */ | |
1307 | for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
1308 | if ((1U << i) & langs) | |
1309 | printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
1310 | lang_names[i], lang_names[i]); | |
1311 | } | |
1312 | ||
1313 | } | |
c662432e NC |
1314 | else if (! displayed) |
1315 | printf (_(" All options with the desired characteristics have already been displayed\n")); | |
1316 | ||
1317 | putchar ('\n'); | |
1318 | } | |
1319 | ||
1320 | /* Display help for a specified type of option. | |
1321 | The options must have ALL of the INCLUDE_FLAGS set | |
1322 | ANY of the flags in the ANY_FLAGS set | |
1323 | and NONE of the EXCLUDE_FLAGS set. */ | |
1324 | static void | |
1325 | print_specific_help (unsigned int include_flags, | |
1326 | unsigned int exclude_flags, | |
1327 | unsigned int any_flags) | |
1328 | { | |
1329 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1330 | const char * description = NULL; | |
1331 | const char * descrip_extra = ""; | |
1332 | size_t i; | |
1333 | unsigned int flag; | |
1334 | static unsigned int columns = 0; | |
1335 | ||
1336 | /* Sanity check: Make sure that we do not have more | |
1337 | languages than we have bits available to enumerate them. */ | |
1338 | gcc_assert ((1U << cl_lang_count) < CL_MIN_OPTION_CLASS); | |
1339 | ||
1340 | /* If we have not done so already, obtain | |
1341 | the desired maximum width of the output. */ | |
1342 | if (columns == 0) | |
1343 | { | |
1344 | const char *p; | |
1345 | ||
1346 | GET_ENVIRONMENT (p, "COLUMNS"); | |
1347 | if (p != NULL) | |
1348 | { | |
1349 | int value = atoi (p); | |
1350 | ||
1351 | if (value > 0) | |
1352 | columns = value; | |
1353 | } | |
1354 | ||
1355 | if (columns == 0) | |
1356 | /* Use a reasonable default. */ | |
1357 | columns = 80; | |
1358 | } | |
1359 | ||
1360 | /* Decide upon the title for the options that we are going to display. */ | |
1361 | for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
1362 | { | |
1363 | switch (flag & include_flags) | |
1364 | { | |
1365 | case 0: | |
1366 | break; | |
1367 | ||
1368 | case CL_TARGET: | |
1369 | description = _("The following options are target specific"); | |
1370 | break; | |
1371 | case CL_WARNING: | |
1372 | description = _("The following options control compiler warning messages"); | |
1373 | break; | |
1374 | case CL_OPTIMIZATION: | |
1375 | description = _("The following options control optimizations"); | |
1376 | break; | |
1377 | case CL_COMMON: | |
1378 | description = _("The following options are language-independent"); | |
1379 | break; | |
1380 | case CL_PARAMS: | |
1381 | description = _("The --param option recognizes the following as parameters"); | |
1382 | break; | |
1383 | default: | |
1384 | if (i >= cl_lang_count) | |
1385 | break; | |
0631b69f | 1386 | if (exclude_flags & all_langs_mask) |
c01c261d | 1387 | description = _("The following options are specific to just the language "); |
c662432e | 1388 | else |
b5456e04 | 1389 | description = _("The following options are supported by the language "); |
b3eaaf1a | 1390 | descrip_extra = lang_names [i]; |
c662432e NC |
1391 | break; |
1392 | } | |
1393 | } | |
1394 | ||
1395 | if (description == NULL) | |
1396 | { | |
1397 | if (any_flags == 0) | |
1398 | { | |
0631b69f | 1399 | if (include_flags & CL_UNDOCUMENTED) |
c662432e | 1400 | description = _("The following options are not documented"); |
0631b69f RW |
1401 | else if (include_flags & CL_SEPARATE) |
1402 | description = _("The following options take separate arguments"); | |
1403 | else if (include_flags & CL_JOINED) | |
1404 | description = _("The following options take joined arguments"); | |
c662432e NC |
1405 | else |
1406 | { | |
1407 | internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
1408 | include_flags); | |
1409 | return; | |
1410 | } | |
1411 | } | |
1412 | else | |
1413 | { | |
1414 | if (any_flags & all_langs_mask) | |
1415 | description = _("The following options are language-related"); | |
1416 | else | |
1417 | description = _("The following options are language-independent"); | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | printf ("%s%s:\n", description, descrip_extra); | |
1422 | print_filtered_help (include_flags, exclude_flags, any_flags, columns); | |
1423 | } | |
1424 | ||
d7b42618 | 1425 | /* Handle target- and language-independent options. Return zero to |
50431bc4 ZD |
1426 | generate an "unknown option" message. Only options that need |
1427 | extra handling need to be listed here; if you simply want | |
1428 | VALUE assigned to a variable, it happens automatically. */ | |
1429 | ||
d7b42618 | 1430 | static int |
79cf5994 DD |
1431 | common_handle_option (size_t scode, const char *arg, int value, |
1432 | unsigned int lang_mask) | |
d7b42618 | 1433 | { |
b3eaaf1a | 1434 | static bool verbose = false; |
d7b42618 NB |
1435 | enum opt_code code = (enum opt_code) scode; |
1436 | ||
d7b42618 NB |
1437 | switch (code) |
1438 | { | |
903caebf NB |
1439 | case OPT__param: |
1440 | handle_param (arg); | |
1441 | break; | |
1442 | ||
b3eaaf1a NC |
1443 | case OPT_v: |
1444 | verbose = true; | |
1445 | break; | |
1446 | ||
c662432e NC |
1447 | case OPT_fhelp: |
1448 | case OPT__help: | |
1449 | { | |
1450 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1451 | unsigned int undoc_mask; | |
1452 | unsigned int i; | |
1453 | ||
b3eaaf1a | 1454 | undoc_mask = (verbose | extra_warnings) ? 0 : CL_UNDOCUMENTED; |
c662432e NC |
1455 | /* First display any single language specific options. */ |
1456 | for (i = 0; i < cl_lang_count; i++) | |
1457 | print_specific_help | |
1458 | (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0); | |
1459 | /* Next display any multi language specific options. */ | |
1460 | print_specific_help (0, undoc_mask, all_langs_mask); | |
1461 | /* Then display any remaining, non-language options. */ | |
1462 | for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
a1fd13d0 | 1463 | print_specific_help (i, undoc_mask, 0); |
c662432e NC |
1464 | exit_after_options = true; |
1465 | break; | |
1466 | } | |
1467 | ||
1468 | case OPT_ftarget_help: | |
d185d268 | 1469 | case OPT__target_help: |
c662432e | 1470 | print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0); |
d185d268 | 1471 | exit_after_options = true; |
67e6ba46 NC |
1472 | |
1473 | /* Allow the target a chance to give the user some additional information. */ | |
1474 | if (targetm.target_help) | |
1475 | targetm.target_help (); | |
d185d268 NB |
1476 | break; |
1477 | ||
c662432e NC |
1478 | case OPT_fhelp_: |
1479 | case OPT__help_: | |
1480 | { | |
1481 | const char * a = arg; | |
1482 | unsigned int include_flags = 0; | |
1483 | /* Note - by default we include undocumented options when listing | |
1484 | specific classes. If you only want to see documented options | |
fa10beec | 1485 | then add ",^undocumented" to the --help= option. E.g.: |
c662432e NC |
1486 | |
1487 | --help=target,^undocumented */ | |
1488 | unsigned int exclude_flags = 0; | |
1489 | ||
1490 | /* Walk along the argument string, parsing each word in turn. | |
1491 | The format is: | |
1492 | arg = [^]{word}[,{arg}] | |
b5456e04 BM |
1493 | word = {optimizers|target|warnings|undocumented| |
1494 | params|common|<language>} */ | |
c662432e NC |
1495 | while (* a != 0) |
1496 | { | |
1497 | static struct | |
1498 | { | |
1499 | const char * string; | |
1500 | unsigned int flag; | |
1501 | } | |
1502 | specifics[] = | |
1503 | { | |
1504 | { "optimizers", CL_OPTIMIZATION }, | |
1505 | { "target", CL_TARGET }, | |
1506 | { "warnings", CL_WARNING }, | |
1507 | { "undocumented", CL_UNDOCUMENTED }, | |
1508 | { "params", CL_PARAMS }, | |
66811228 RW |
1509 | { "joined", CL_JOINED }, |
1510 | { "separate", CL_SEPARATE }, | |
b5456e04 | 1511 | { "common", CL_COMMON }, |
c662432e NC |
1512 | { NULL, 0 } |
1513 | }; | |
1514 | unsigned int * pflags; | |
1515 | char * comma; | |
b3eaaf1a | 1516 | unsigned int lang_flag, specific_flag; |
c662432e NC |
1517 | unsigned int len; |
1518 | unsigned int i; | |
1519 | ||
1520 | if (* a == '^') | |
1521 | { | |
1522 | ++ a; | |
1523 | pflags = & exclude_flags; | |
1524 | } | |
1525 | else | |
1526 | pflags = & include_flags; | |
1527 | ||
1528 | comma = strchr (a, ','); | |
1529 | if (comma == NULL) | |
1530 | len = strlen (a); | |
1531 | else | |
1532 | len = comma - a; | |
0631b69f RW |
1533 | if (len == 0) |
1534 | { | |
1535 | a = comma + 1; | |
1536 | continue; | |
1537 | } | |
c662432e | 1538 | |
b3eaaf1a NC |
1539 | /* Check to see if the string matches an option class name. */ |
1540 | for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
c662432e NC |
1541 | if (strncasecmp (a, specifics[i].string, len) == 0) |
1542 | { | |
b3eaaf1a NC |
1543 | specific_flag = specifics[i].flag; |
1544 | break; | |
1545 | } | |
0631b69f | 1546 | |
b3eaaf1a NC |
1547 | /* Check to see if the string matches a language name. |
1548 | Note - we rely upon the alpha-sorted nature of the entries in | |
1549 | the lang_names array, specifically that shorter names appear | |
fa10beec | 1550 | before their longer variants. (i.e. C before C++). That way |
b3eaaf1a NC |
1551 | when we are attempting to match --help=c for example we will |
1552 | match with C first and not C++. */ | |
1553 | for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
1554 | if (strncasecmp (a, lang_names[i], len) == 0) | |
1555 | { | |
1556 | lang_flag = 1U << i; | |
c662432e NC |
1557 | break; |
1558 | } | |
1559 | ||
b3eaaf1a | 1560 | if (specific_flag != 0) |
c662432e | 1561 | { |
b3eaaf1a NC |
1562 | if (lang_flag == 0) |
1563 | * pflags |= specific_flag; | |
1564 | else | |
1565 | { | |
1566 | /* The option's argument matches both the start of a | |
1567 | language name and the start of an option class name. | |
1568 | We have a special case for when the user has | |
1569 | specified "--help=c", but otherwise we have to issue | |
1570 | a warning. */ | |
1571 | if (strncasecmp (a, "c", len) == 0) | |
1572 | * pflags |= lang_flag; | |
1573 | else | |
1574 | fnotice (stderr, | |
1575 | "warning: --help argument %.*s is ambiguous, please be more specific\n", | |
1576 | len, a); | |
1577 | } | |
c662432e | 1578 | } |
b3eaaf1a NC |
1579 | else if (lang_flag != 0) |
1580 | * pflags |= lang_flag; | |
1581 | else | |
1582 | fnotice (stderr, | |
1583 | "warning: unrecognized argument to --help= option: %.*s\n", | |
1584 | len, a); | |
c662432e NC |
1585 | |
1586 | if (comma == NULL) | |
1587 | break; | |
1588 | a = comma + 1; | |
1589 | } | |
1590 | ||
1591 | if (include_flags) | |
1592 | print_specific_help (include_flags, exclude_flags, 0); | |
1593 | exit_after_options = true; | |
1594 | break; | |
1595 | } | |
1596 | ||
41fd0f9b | 1597 | case OPT_fversion: |
d185d268 | 1598 | case OPT__version: |
d185d268 NB |
1599 | exit_after_options = true; |
1600 | break; | |
1601 | ||
1602 | case OPT_G: | |
7b086b11 | 1603 | g_switch_value = value; |
d185d268 NB |
1604 | g_switch_set = true; |
1605 | break; | |
1606 | ||
903caebf NB |
1607 | case OPT_O: |
1608 | case OPT_Os: | |
1609 | /* Currently handled in a prescan. */ | |
1610 | break; | |
1611 | ||
79cf5994 | 1612 | case OPT_Werror_: |
dc90f45b | 1613 | enable_warning_as_error (arg, value, lang_mask); |
79cf5994 DD |
1614 | break; |
1615 | ||
e01cc6dc | 1616 | case OPT_Wlarger_than_: |
e8fc888d MLI |
1617 | /* This form corresponds to -Wlarger-than-. |
1618 | Kept for backward compatibility. | |
1619 | Don't use it as the first argument of warning(). */ | |
1620 | ||
1621 | case OPT_Wlarger_than_eq: | |
e01cc6dc NB |
1622 | larger_than_size = value; |
1623 | warn_larger_than = value != -1; | |
1624 | break; | |
1625 | ||
a214518f SP |
1626 | case OPT_Wframe_larger_than_: |
1627 | frame_larger_than_size = value; | |
1628 | warn_frame_larger_than = value != -1; | |
1629 | break; | |
1630 | ||
e01cc6dc | 1631 | case OPT_Wstrict_aliasing: |
79bedddc SR |
1632 | set_Wstrict_aliasing (value); |
1633 | break; | |
1634 | ||
5399d643 | 1635 | case OPT_Wstrict_aliasing_: |
e01cc6dc NB |
1636 | warn_strict_aliasing = value; |
1637 | break; | |
1638 | ||
6ac01510 | 1639 | case OPT_Wstrict_overflow: |
4d4362c8 ILT |
1640 | warn_strict_overflow = (value |
1641 | ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
1642 | : 0); | |
1643 | break; | |
1644 | ||
6ac01510 ILT |
1645 | case OPT_Wstrict_overflow_: |
1646 | warn_strict_overflow = value; | |
1647 | break; | |
1648 | ||
903caebf | 1649 | case OPT_Wunused: |
e73f7547 | 1650 | warn_unused = value; |
903caebf NB |
1651 | break; |
1652 | ||
d185d268 NB |
1653 | case OPT_aux_info: |
1654 | case OPT_aux_info_: | |
1655 | aux_info_file_name = arg; | |
1656 | flag_gen_aux_info = 1; | |
1657 | break; | |
1658 | ||
1659 | case OPT_auxbase: | |
1660 | aux_base_name = arg; | |
1661 | break; | |
1662 | ||
1663 | case OPT_auxbase_strip: | |
1664 | { | |
1665 | char *tmp = xstrdup (arg); | |
1666 | strip_off_ending (tmp, strlen (tmp)); | |
1667 | if (tmp[0]) | |
1668 | aux_base_name = tmp; | |
1669 | } | |
1670 | break; | |
1671 | ||
1672 | case OPT_d: | |
1673 | decode_d_option (arg); | |
1674 | break; | |
1675 | ||
1676 | case OPT_dumpbase: | |
1677 | dump_base_name = arg; | |
1678 | break; | |
1679 | ||
0fcd5dda NB |
1680 | case OPT_falign_functions_: |
1681 | align_functions = value; | |
1682 | break; | |
1683 | ||
0fcd5dda NB |
1684 | case OPT_falign_jumps_: |
1685 | align_jumps = value; | |
1686 | break; | |
1687 | ||
0fcd5dda NB |
1688 | case OPT_falign_labels_: |
1689 | align_labels = value; | |
1690 | break; | |
1691 | ||
0fcd5dda NB |
1692 | case OPT_falign_loops_: |
1693 | align_loops = value; | |
1694 | break; | |
1695 | ||
6ff3a151 | 1696 | case OPT_fbranch_probabilities: |
a8a5f53a | 1697 | flag_branch_probabilities_set = true; |
1194fc79 R |
1698 | break; |
1699 | ||
058de654 NB |
1700 | case OPT_fcall_used_: |
1701 | fix_register (arg, 0, 1); | |
1702 | break; | |
1703 | ||
1704 | case OPT_fcall_saved_: | |
1705 | fix_register (arg, 0, 0); | |
1706 | break; | |
6fb5fa3c DB |
1707 | |
1708 | case OPT_fdbg_cnt_: | |
1709 | dbg_cnt_process_opt (arg); | |
1710 | break; | |
0a090f42 SP |
1711 | |
1712 | case OPT_fdbg_cnt_list: | |
1713 | dbg_cnt_list_all_counters (); | |
1714 | break; | |
058de654 | 1715 | |
c8aea42c PB |
1716 | case OPT_fdebug_prefix_map_: |
1717 | add_debug_prefix_map (arg); | |
1718 | break; | |
1719 | ||
de32c0cb NB |
1720 | case OPT_fdiagnostics_show_location_: |
1721 | if (!strcmp (arg, "once")) | |
1722 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
1723 | else if (!strcmp (arg, "every-line")) | |
1724 | diagnostic_prefixing_rule (global_dc) | |
1725 | = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
1726 | else | |
1727 | return 0; | |
1728 | break; | |
1729 | ||
2098fe9e DD |
1730 | case OPT_fdiagnostics_show_option: |
1731 | global_dc->show_option_requested = true; | |
1732 | break; | |
1733 | ||
6de9cd9a DN |
1734 | case OPT_fdump_: |
1735 | if (!dump_switch_p (arg)) | |
1736 | return 0; | |
1737 | break; | |
1738 | ||
8ce94e44 JM |
1739 | case OPT_fexcess_precision_: |
1740 | if (!strcmp (arg, "fast")) | |
1741 | flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; | |
1742 | else if (!strcmp (arg, "standard")) | |
1743 | flag_excess_precision_cmdline = EXCESS_PRECISION_STANDARD; | |
1744 | else | |
1745 | error ("unknown excess precision style \"%s\"", arg); | |
1746 | break; | |
1747 | ||
058de654 NB |
1748 | case OPT_ffast_math: |
1749 | set_fast_math_flags (value); | |
1750 | break; | |
1751 | ||
a1a82611 RE |
1752 | case OPT_funsafe_math_optimizations: |
1753 | set_unsafe_math_optimizations_flags (value); | |
1754 | break; | |
1755 | ||
058de654 NB |
1756 | case OPT_ffixed_: |
1757 | fix_register (arg, 1, 1); | |
1758 | break; | |
1759 | ||
d302c9d6 NB |
1760 | case OPT_finline_limit_: |
1761 | case OPT_finline_limit_eq: | |
d302c9d6 NB |
1762 | set_param_value ("max-inline-insns-single", value / 2); |
1763 | set_param_value ("max-inline-insns-auto", value / 2); | |
d302c9d6 NB |
1764 | break; |
1765 | ||
8d5a7d1f | 1766 | case OPT_finstrument_functions_exclude_function_list_: |
1ebc7e68 | 1767 | add_comma_separated_to_vector |
8d5a7d1f ILT |
1768 | (&flag_instrument_functions_exclude_functions, arg); |
1769 | break; | |
1770 | ||
1771 | case OPT_finstrument_functions_exclude_file_list_: | |
1ebc7e68 | 1772 | add_comma_separated_to_vector |
8d5a7d1f ILT |
1773 | (&flag_instrument_functions_exclude_files, arg); |
1774 | break; | |
1775 | ||
de32c0cb | 1776 | case OPT_fmessage_length_: |
b6fe0bb8 | 1777 | pp_set_line_maximum_length (global_dc->printer, value); |
de32c0cb NB |
1778 | break; |
1779 | ||
467cecf3 JB |
1780 | case OPT_fpack_struct_: |
1781 | if (value <= 0 || (value & (value - 1)) || value > 16) | |
c662432e | 1782 | error ("structure alignment must be a small power of two, not %d", value); |
467cecf3 JB |
1783 | else |
1784 | { | |
1785 | initial_max_fld_align = value; | |
1786 | maximum_field_alignment = value * BITS_PER_UNIT; | |
1787 | } | |
1788 | break; | |
1789 | ||
de32c0cb | 1790 | case OPT_fpeel_loops: |
a8a5f53a | 1791 | flag_peel_loops_set = true; |
6ff3a151 NB |
1792 | break; |
1793 | ||
68a607d8 DN |
1794 | case OPT_fplugin_: |
1795 | #ifdef ENABLE_PLUGIN | |
1796 | add_new_plugin (arg); | |
1797 | #else | |
1798 | error ("Plugin support is disabled. Configure with --enable-plugin."); | |
1799 | #endif | |
1800 | break; | |
1801 | ||
1802 | case OPT_fplugin_arg_: | |
1803 | #ifdef ENABLE_PLUGIN | |
1804 | parse_plugin_arg_opt (arg); | |
1805 | #else | |
1806 | error ("Plugin support is disabled. Configure with --enable-plugin."); | |
1807 | #endif | |
1808 | break; | |
1809 | ||
6ff3a151 | 1810 | case OPT_fprofile_arcs: |
a8a5f53a | 1811 | profile_arc_flag_set = true; |
6ff3a151 NB |
1812 | break; |
1813 | ||
4d4b8cb9 JH |
1814 | case OPT_finline_functions: |
1815 | flag_inline_functions_set = true; | |
1816 | break; | |
1817 | ||
2f908293 SP |
1818 | case OPT_fprofile_dir_: |
1819 | profile_data_prefix = xstrdup (arg); | |
1820 | break; | |
1821 | ||
1822 | case OPT_fprofile_use_: | |
1823 | profile_data_prefix = xstrdup (arg); | |
1824 | flag_profile_use = true; | |
1825 | value = true; | |
1826 | /* No break here - do -fprofile-use processing. */ | |
a8a5f53a JH |
1827 | case OPT_fprofile_use: |
1828 | if (!flag_branch_probabilities_set) | |
1829 | flag_branch_probabilities = value; | |
1830 | if (!flag_profile_values_set) | |
1831 | flag_profile_values = value; | |
1832 | if (!flag_unroll_loops_set) | |
1833 | flag_unroll_loops = value; | |
1834 | if (!flag_peel_loops_set) | |
1835 | flag_peel_loops = value; | |
1836 | if (!flag_tracer_set) | |
1837 | flag_tracer = value; | |
1838 | if (!flag_value_profile_transformations_set) | |
1839 | flag_value_profile_transformations = value; | |
4d4b8cb9 JH |
1840 | if (!flag_inline_functions_set) |
1841 | flag_inline_functions = value; | |
ca30a539 JH |
1842 | if (!flag_ipa_cp_set) |
1843 | flag_ipa_cp = value; | |
1844 | if (!flag_ipa_cp_clone_set | |
1845 | && value && flag_ipa_cp) | |
1846 | flag_ipa_cp_clone = value; | |
8bcf15f6 JH |
1847 | if (!flag_predictive_commoning_set) |
1848 | flag_predictive_commoning = value; | |
1849 | if (!flag_unswitch_loops_set) | |
1850 | flag_unswitch_loops = value; | |
1851 | if (!flag_gcse_after_reload_set) | |
1852 | flag_gcse_after_reload = value; | |
a8a5f53a JH |
1853 | break; |
1854 | ||
2f908293 SP |
1855 | case OPT_fprofile_generate_: |
1856 | profile_data_prefix = xstrdup (arg); | |
1857 | value = true; | |
1858 | /* No break here - do -fprofile-generate processing. */ | |
a8a5f53a JH |
1859 | case OPT_fprofile_generate: |
1860 | if (!profile_arc_flag_set) | |
1861 | profile_arc_flag = value; | |
1862 | if (!flag_profile_values_set) | |
1863 | flag_profile_values = value; | |
1864 | if (!flag_value_profile_transformations_set) | |
1865 | flag_value_profile_transformations = value; | |
6b956c95 JH |
1866 | if (!flag_inline_functions_set) |
1867 | flag_inline_functions = value; | |
a8a5f53a JH |
1868 | break; |
1869 | ||
fca9dc00 | 1870 | case OPT_fprofile_values: |
a8a5f53a | 1871 | flag_profile_values_set = true; |
fca9dc00 ZD |
1872 | break; |
1873 | ||
d7afec4b ND |
1874 | case OPT_fvisibility_: |
1875 | { | |
1876 | if (!strcmp(arg, "default")) | |
1877 | default_visibility = VISIBILITY_DEFAULT; | |
1878 | else if (!strcmp(arg, "internal")) | |
1879 | default_visibility = VISIBILITY_INTERNAL; | |
1880 | else if (!strcmp(arg, "hidden")) | |
1881 | default_visibility = VISIBILITY_HIDDEN; | |
1882 | else if (!strcmp(arg, "protected")) | |
1883 | default_visibility = VISIBILITY_PROTECTED; | |
1884 | else | |
cc9795d4 | 1885 | error ("unrecognized visibility value \"%s\"", arg); |
d7afec4b ND |
1886 | } |
1887 | break; | |
1888 | ||
fca9dc00 | 1889 | case OPT_fvpt: |
6d9901e7 ZD |
1890 | flag_value_profile_transformations_set = true; |
1891 | break; | |
1892 | ||
de32c0cb NB |
1893 | case OPT_frandom_seed: |
1894 | /* The real switch is -fno-random-seed. */ | |
1895 | if (value) | |
1896 | return 0; | |
403d4851 | 1897 | set_random_seed (NULL); |
de32c0cb NB |
1898 | break; |
1899 | ||
1900 | case OPT_frandom_seed_: | |
403d4851 | 1901 | set_random_seed (arg); |
de32c0cb NB |
1902 | break; |
1903 | ||
e855c69d AB |
1904 | case OPT_fselective_scheduling: |
1905 | case OPT_fselective_scheduling2: | |
1906 | sel_sched_switch_set = true; | |
1907 | break; | |
1908 | ||
de32c0cb NB |
1909 | case OPT_fsched_verbose_: |
1910 | #ifdef INSN_SCHEDULING | |
1911 | fix_sched_param ("verbose", arg); | |
1912 | break; | |
1913 | #else | |
1914 | return 0; | |
1915 | #endif | |
1916 | ||
569fa502 DN |
1917 | case OPT_fsched_stalled_insns_: |
1918 | flag_sched_stalled_insns = value; | |
1919 | if (flag_sched_stalled_insns == 0) | |
1920 | flag_sched_stalled_insns = -1; | |
1921 | break; | |
1922 | ||
569fa502 DN |
1923 | case OPT_fsched_stalled_insns_dep_: |
1924 | flag_sched_stalled_insns_dep = value; | |
1925 | break; | |
6ff3a151 | 1926 | |
b38f3813 EB |
1927 | case OPT_fstack_check_: |
1928 | if (!strcmp (arg, "no")) | |
1929 | flag_stack_check = NO_STACK_CHECK; | |
1930 | else if (!strcmp (arg, "generic")) | |
1931 | /* This is the old stack checking method. */ | |
1932 | flag_stack_check = STACK_CHECK_BUILTIN | |
1933 | ? FULL_BUILTIN_STACK_CHECK | |
1934 | : GENERIC_STACK_CHECK; | |
1935 | else if (!strcmp (arg, "specific")) | |
1936 | /* This is the new stack checking method. */ | |
1937 | flag_stack_check = STACK_CHECK_BUILTIN | |
1938 | ? FULL_BUILTIN_STACK_CHECK | |
1939 | : STACK_CHECK_STATIC_BUILTIN | |
1940 | ? STATIC_BUILTIN_STACK_CHECK | |
1941 | : GENERIC_STACK_CHECK; | |
1942 | else | |
1943 | warning (0, "unknown stack check parameter \"%s\"", arg); | |
1944 | break; | |
1945 | ||
1946 | case OPT_fstack_check: | |
1947 | /* This is the same as the "specific" mode above. */ | |
1948 | if (value) | |
1949 | flag_stack_check = STACK_CHECK_BUILTIN | |
1950 | ? FULL_BUILTIN_STACK_CHECK | |
1951 | : STACK_CHECK_STATIC_BUILTIN | |
1952 | ? STATIC_BUILTIN_STACK_CHECK | |
1953 | : GENERIC_STACK_CHECK; | |
1954 | else | |
1955 | flag_stack_check = NO_STACK_CHECK; | |
1956 | break; | |
1957 | ||
de32c0cb NB |
1958 | case OPT_fstack_limit: |
1959 | /* The real switch is -fno-stack-limit. */ | |
1960 | if (value) | |
1961 | return 0; | |
1962 | stack_limit_rtx = NULL_RTX; | |
1963 | break; | |
1964 | ||
058de654 NB |
1965 | case OPT_fstack_limit_register_: |
1966 | { | |
1967 | int reg = decode_reg_name (arg); | |
1968 | if (reg < 0) | |
1969 | error ("unrecognized register name \"%s\"", arg); | |
1970 | else | |
1971 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
1972 | } | |
1973 | break; | |
1974 | ||
1975 | case OPT_fstack_limit_symbol_: | |
1976 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (arg)); | |
1977 | break; | |
1978 | ||
c866976a LB |
1979 | case OPT_ftree_vectorizer_verbose_: |
1980 | vect_set_verbosity_level (arg); | |
1981 | break; | |
1982 | ||
058de654 NB |
1983 | case OPT_ftls_model_: |
1984 | if (!strcmp (arg, "global-dynamic")) | |
1985 | flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
1986 | else if (!strcmp (arg, "local-dynamic")) | |
1987 | flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
1988 | else if (!strcmp (arg, "initial-exec")) | |
1989 | flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
1990 | else if (!strcmp (arg, "local-exec")) | |
1991 | flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
1992 | else | |
d4ee4d25 | 1993 | warning (0, "unknown tls-model \"%s\"", arg); |
058de654 NB |
1994 | break; |
1995 | ||
058e97ec | 1996 | case OPT_fira_algorithm_: |
7db7ed3c | 1997 | if (!strcmp (arg, "CB")) |
058e97ec | 1998 | flag_ira_algorithm = IRA_ALGORITHM_CB; |
7db7ed3c VM |
1999 | else if (!strcmp (arg, "priority")) |
2000 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
058e97ec VM |
2001 | else |
2002 | warning (0, "unknown ira algorithm \"%s\"", arg); | |
2003 | break; | |
2004 | ||
7db7ed3c VM |
2005 | case OPT_fira_region_: |
2006 | if (!strcmp (arg, "one")) | |
2007 | flag_ira_region = IRA_REGION_ONE; | |
2008 | else if (!strcmp (arg, "all")) | |
2009 | flag_ira_region = IRA_REGION_ALL; | |
2010 | else if (!strcmp (arg, "mixed")) | |
2011 | flag_ira_region = IRA_REGION_MIXED; | |
2012 | else | |
2013 | warning (0, "unknown ira region \"%s\"", arg); | |
2014 | break; | |
2015 | ||
058e97ec VM |
2016 | case OPT_fira_verbose_: |
2017 | flag_ira_verbose = value; | |
2018 | break; | |
2019 | ||
de32c0cb | 2020 | case OPT_ftracer: |
a8a5f53a | 2021 | flag_tracer_set = true; |
6de9cd9a DN |
2022 | break; |
2023 | ||
ca30a539 JH |
2024 | case OPT_fipa_cp: |
2025 | flag_ipa_cp_set = true; | |
2026 | break; | |
2027 | ||
2028 | case OPT_fipa_cp_clone: | |
2029 | flag_ipa_cp_clone_set = true; | |
2030 | break; | |
2031 | ||
8bcf15f6 JH |
2032 | case OPT_fpredictive_commoning: |
2033 | flag_predictive_commoning_set = true; | |
2034 | break; | |
2035 | ||
2036 | case OPT_funswitch_loops: | |
2037 | flag_unswitch_loops_set = true; | |
2038 | break; | |
2039 | ||
2040 | case OPT_fgcse_after_reload: | |
2041 | flag_gcse_after_reload_set = true; | |
2042 | break; | |
2043 | ||
de32c0cb | 2044 | case OPT_funroll_loops: |
a8a5f53a | 2045 | flag_unroll_loops_set = true; |
6ff3a151 NB |
2046 | break; |
2047 | ||
e01cc6dc | 2048 | case OPT_g: |
df38ffef NB |
2049 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg); |
2050 | break; | |
2051 | ||
2052 | case OPT_gcoff: | |
2053 | set_debug_level (SDB_DEBUG, false, arg); | |
2054 | break; | |
2055 | ||
53b2323e | 2056 | case OPT_gdwarf_: |
b5b8b0ac | 2057 | if (value < 2 || value > 4) |
53b2323e RH |
2058 | error ("dwarf version %d is not supported", value); |
2059 | else | |
2060 | dwarf_version = value; | |
2061 | set_debug_level (DWARF2_DEBUG, false, ""); | |
df38ffef NB |
2062 | break; |
2063 | ||
2064 | case OPT_ggdb: | |
2065 | set_debug_level (NO_DEBUG, 2, arg); | |
2066 | break; | |
2067 | ||
2068 | case OPT_gstabs: | |
2069 | case OPT_gstabs_: | |
2070 | set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg); | |
2071 | break; | |
2072 | ||
2073 | case OPT_gvms: | |
2074 | set_debug_level (VMS_DEBUG, false, arg); | |
2075 | break; | |
2076 | ||
2077 | case OPT_gxcoff: | |
2078 | case OPT_gxcoff_: | |
2079 | set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg); | |
e01cc6dc NB |
2080 | break; |
2081 | ||
d185d268 NB |
2082 | case OPT_o: |
2083 | asm_file_name = arg; | |
2084 | break; | |
2085 | ||
d185d268 NB |
2086 | case OPT_pedantic_errors: |
2087 | flag_pedantic_errors = pedantic = 1; | |
2088 | break; | |
2089 | ||
8393a9c8 | 2090 | case OPT_fsee: |
c04a56bf | 2091 | case OPT_fcse_skip_blocks: |
efa1cdf0 ZD |
2092 | case OPT_floop_optimize: |
2093 | case OPT_frerun_loop_opt: | |
2094 | case OPT_fstrength_reduce: | |
e9033855 | 2095 | case OPT_ftree_store_copy_prop: |
aad89cd0 | 2096 | case OPT_fforce_addr: |
1353232d | 2097 | case OPT_ftree_salias: |
37aaba15 | 2098 | case OPT_ftree_store_ccp: |
c0220ea4 | 2099 | /* These are no-ops, preserved for backward compatibility. */ |
efa1cdf0 ZD |
2100 | break; |
2101 | ||
50431bc4 ZD |
2102 | default: |
2103 | /* If the flag was handled in a standard way, assume the lack of | |
2104 | processing here is intentional. */ | |
0e61db61 NS |
2105 | gcc_assert (cl_options[scode].flag_var); |
2106 | break; | |
d7b42618 NB |
2107 | } |
2108 | ||
2109 | return 1; | |
2110 | } | |
903caebf NB |
2111 | |
2112 | /* Handle --param NAME=VALUE. */ | |
2113 | static void | |
2114 | handle_param (const char *carg) | |
2115 | { | |
2116 | char *equal, *arg; | |
2117 | int value; | |
2118 | ||
2119 | arg = xstrdup (carg); | |
2120 | equal = strchr (arg, '='); | |
2121 | if (!equal) | |
2122 | error ("%s: --param arguments should be of the form NAME=VALUE", arg); | |
2123 | else | |
2124 | { | |
2125 | value = integral_argument (equal + 1); | |
2126 | if (value == -1) | |
9e637a26 | 2127 | error ("invalid --param value %qs", equal + 1); |
903caebf NB |
2128 | else |
2129 | { | |
2130 | *equal = '\0'; | |
2131 | set_param_value (arg, value); | |
2132 | } | |
2133 | } | |
2134 | ||
2135 | free (arg); | |
2136 | } | |
2137 | ||
79bedddc SR |
2138 | /* Used to set the level of strict aliasing warnings, |
2139 | when no level is specified (i.e., when -Wstrict-aliasing, and not | |
2140 | -Wstrict-aliasing=level was given). | |
2141 | ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
2142 | and 0 otherwise. After calling this function, wstrict_aliasing will be | |
2143 | set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
2144 | void | |
2145 | set_Wstrict_aliasing (int onoff) | |
2146 | { | |
2147 | gcc_assert (onoff == 0 || onoff == 1); | |
2148 | if (onoff != 0) | |
2149 | warn_strict_aliasing = 3; | |
621b5ed6 RG |
2150 | else |
2151 | warn_strict_aliasing = 0; | |
79bedddc SR |
2152 | } |
2153 | ||
058de654 NB |
2154 | /* The following routines are useful in setting all the flags that |
2155 | -ffast-math and -fno-fast-math imply. */ | |
2156 | void | |
2157 | set_fast_math_flags (int set) | |
2158 | { | |
058de654 | 2159 | flag_unsafe_math_optimizations = set; |
c5edab65 | 2160 | set_unsafe_math_optimizations_flags (set); |
058de654 NB |
2161 | flag_finite_math_only = set; |
2162 | flag_errno_math = !set; | |
2163 | if (set) | |
039c3d42 RS |
2164 | { |
2165 | flag_signaling_nans = 0; | |
2166 | flag_rounding_math = 0; | |
c7463669 | 2167 | flag_cx_limited_range = 1; |
039c3d42 | 2168 | } |
058de654 NB |
2169 | } |
2170 | ||
a1a82611 RE |
2171 | /* When -funsafe-math-optimizations is set the following |
2172 | flags are set as well. */ | |
2173 | void | |
2174 | set_unsafe_math_optimizations_flags (int set) | |
2175 | { | |
c5edab65 EB |
2176 | flag_trapping_math = !set; |
2177 | flag_signed_zeros = !set; | |
a1a82611 | 2178 | flag_associative_math = set; |
c5edab65 | 2179 | flag_reciprocal_math = set; |
a1a82611 RE |
2180 | } |
2181 | ||
058de654 NB |
2182 | /* Return true iff flags are set as if -ffast-math. */ |
2183 | bool | |
2184 | fast_math_flags_set_p (void) | |
2185 | { | |
2186 | return (!flag_trapping_math | |
2187 | && flag_unsafe_math_optimizations | |
2188 | && flag_finite_math_only | |
db02da79 | 2189 | && !flag_signed_zeros |
058de654 NB |
2190 | && !flag_errno_math); |
2191 | } | |
cf03fd63 | 2192 | |
ab442df7 MM |
2193 | /* Return true iff flags are set as if -ffast-math but using the flags stored |
2194 | in the struct cl_optimization structure. */ | |
2195 | bool | |
2196 | fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
2197 | { | |
2198 | return (!opt->flag_trapping_math | |
2199 | && opt->flag_unsafe_math_optimizations | |
2200 | && opt->flag_finite_math_only | |
2201 | && !opt->flag_signed_zeros | |
2202 | && !opt->flag_errno_math); | |
2203 | } | |
2204 | ||
df38ffef NB |
2205 | /* Handle a debug output -g switch. EXTENDED is true or false to support |
2206 | extended output (2 is special and means "-ggdb" was given). */ | |
2207 | static void | |
2208 | set_debug_level (enum debug_info_type type, int extended, const char *arg) | |
2209 | { | |
2210 | static bool type_explicit; | |
2211 | ||
2212 | use_gnu_debug_info_extensions = extended; | |
2213 | ||
2214 | if (type == NO_DEBUG) | |
2215 | { | |
2216 | if (write_symbols == NO_DEBUG) | |
2217 | { | |
2218 | write_symbols = PREFERRED_DEBUGGING_TYPE; | |
2219 | ||
2220 | if (extended == 2) | |
2221 | { | |
2222 | #ifdef DWARF2_DEBUGGING_INFO | |
2223 | write_symbols = DWARF2_DEBUG; | |
2224 | #elif defined DBX_DEBUGGING_INFO | |
2225 | write_symbols = DBX_DEBUG; | |
2226 | #endif | |
2227 | } | |
2228 | ||
2229 | if (write_symbols == NO_DEBUG) | |
d4ee4d25 | 2230 | warning (0, "target system does not support debug output"); |
df38ffef NB |
2231 | } |
2232 | } | |
2233 | else | |
2234 | { | |
2235 | /* Does it conflict with an already selected type? */ | |
2236 | if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols) | |
2237 | error ("debug format \"%s\" conflicts with prior selection", | |
2238 | debug_type_names[type]); | |
2239 | write_symbols = type; | |
2240 | type_explicit = true; | |
2241 | } | |
2242 | ||
2243 | /* A debug flag without a level defaults to level 2. */ | |
2244 | if (*arg == '\0') | |
2245 | { | |
2246 | if (!debug_info_level) | |
32e8bb8e | 2247 | debug_info_level = DINFO_LEVEL_NORMAL; |
df38ffef NB |
2248 | } |
2249 | else | |
2250 | { | |
32e8bb8e ILT |
2251 | int argval = integral_argument (arg); |
2252 | if (argval == -1) | |
df38ffef | 2253 | error ("unrecognised debug output level \"%s\"", arg); |
32e8bb8e | 2254 | else if (argval > 3) |
df38ffef | 2255 | error ("debug output level %s is too high", arg); |
32e8bb8e ILT |
2256 | else |
2257 | debug_info_level = (enum debug_info_level) argval; | |
df38ffef NB |
2258 | } |
2259 | } | |
2260 | ||
75685792 RS |
2261 | /* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't |
2262 | a simple on-off switch. */ | |
2263 | ||
2264 | int | |
ccf08a6e | 2265 | option_enabled (int opt_idx) |
75685792 | 2266 | { |
ccf08a6e | 2267 | const struct cl_option *option = &(cl_options[opt_idx]); |
c662432e | 2268 | |
75685792 | 2269 | if (option->flag_var) |
55bea00a | 2270 | switch (option->var_type) |
75685792 RS |
2271 | { |
2272 | case CLVC_BOOLEAN: | |
55bea00a | 2273 | return *(int *) option->flag_var != 0; |
75685792 RS |
2274 | |
2275 | case CLVC_EQUAL: | |
55bea00a | 2276 | return *(int *) option->flag_var == option->var_value; |
75685792 RS |
2277 | |
2278 | case CLVC_BIT_CLEAR: | |
55bea00a | 2279 | return (*(int *) option->flag_var & option->var_value) == 0; |
75685792 RS |
2280 | |
2281 | case CLVC_BIT_SET: | |
55bea00a RS |
2282 | return (*(int *) option->flag_var & option->var_value) != 0; |
2283 | ||
2284 | case CLVC_STRING: | |
2285 | break; | |
75685792 RS |
2286 | } |
2287 | return -1; | |
2288 | } | |
5c60a017 RS |
2289 | |
2290 | /* Fill STATE with the current state of option OPTION. Return true if | |
2291 | there is some state to store. */ | |
2292 | ||
2293 | bool | |
2294 | get_option_state (int option, struct cl_option_state *state) | |
2295 | { | |
2296 | if (cl_options[option].flag_var == 0) | |
2297 | return false; | |
2298 | ||
2299 | switch (cl_options[option].var_type) | |
2300 | { | |
2301 | case CLVC_BOOLEAN: | |
2302 | case CLVC_EQUAL: | |
2303 | state->data = cl_options[option].flag_var; | |
2304 | state->size = sizeof (int); | |
2305 | break; | |
2306 | ||
2307 | case CLVC_BIT_CLEAR: | |
2308 | case CLVC_BIT_SET: | |
2309 | state->ch = option_enabled (option); | |
2310 | state->data = &state->ch; | |
2311 | state->size = 1; | |
2312 | break; | |
2313 | ||
2314 | case CLVC_STRING: | |
2315 | state->data = *(const char **) cl_options[option].flag_var; | |
2316 | if (state->data == 0) | |
2317 | state->data = ""; | |
d3bfe4de | 2318 | state->size = strlen ((const char *) state->data) + 1; |
5c60a017 RS |
2319 | break; |
2320 | } | |
2321 | return true; | |
2322 | } | |
dc90f45b MLI |
2323 | |
2324 | /* Enable a warning option as an error. This is used by -Werror= and | |
2325 | also by legacy Werror-implicit-function-declaration. */ | |
2326 | ||
2327 | void | |
2328 | enable_warning_as_error (const char *arg, int value, unsigned int lang_mask) | |
2329 | { | |
2330 | char *new_option; | |
2331 | int option_index; | |
2332 | ||
2333 | new_option = XNEWVEC (char, strlen (arg) + 2); | |
2334 | new_option[0] = 'W'; | |
2335 | strcpy (new_option + 1, arg); | |
2336 | option_index = find_opt (new_option, lang_mask); | |
2337 | if (option_index == N_OPTS) | |
2338 | { | |
2339 | error ("-Werror=%s: No option -%s", arg, new_option); | |
2340 | } | |
2341 | else | |
2342 | { | |
bbbbb16a | 2343 | diagnostic_t kind = value ? DK_ERROR : DK_WARNING; |
dc90f45b MLI |
2344 | diagnostic_classify_diagnostic (global_dc, option_index, kind); |
2345 | ||
2346 | /* -Werror=foo implies -Wfoo. */ | |
2347 | if (cl_options[option_index].var_type == CLVC_BOOLEAN | |
2348 | && cl_options[option_index].flag_var | |
2349 | && kind == DK_ERROR) | |
2350 | *(int *) cl_options[option_index].flag_var = 1; | |
2351 | } | |
2352 | free (new_option); | |
2353 | } |