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5457b645 | 1 | /* Command line option handling. |
86482d6b | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
981eb798 | 3 | Free Software Foundation, Inc. |
5457b645 | 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 | |
8c4c00c1 | 10 | Software Foundation; either version 3, or (at your option) any later |
5457b645 | 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 | |
8c4c00c1 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
5457b645 | 21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
53b8e5c1 | 24 | #include "intl.h" |
5457b645 | 25 | #include "coretypes.h" |
26 | #include "tm.h" | |
27 | #include "tree.h" | |
941a4893 | 28 | #include "rtl.h" |
4852b829 | 29 | #include "expr.h" |
941a4893 | 30 | #include "ggc.h" |
31 | #include "output.h" | |
5457b645 | 32 | #include "langhooks.h" |
33 | #include "opts.h" | |
3272db82 | 34 | #include "options.h" |
35 | #include "flags.h" | |
36 | #include "toplev.h" | |
da3b1bab | 37 | #include "params.h" |
1e06725a | 38 | #include "diagnostic.h" |
f5d971c5 | 39 | #include "tm_p.h" /* For OPTIMIZATION_OPTIONS. */ |
00f1bbdb | 40 | #include "insn-attr.h" /* For INSN_SCHEDULING. */ |
bfb835d3 | 41 | #include "target.h" |
77fce4cd | 42 | #include "tree-pass.h" |
3072d30e | 43 | #include "dbgcnt.h" |
5f1f2de5 | 44 | #include "debug.h" |
9227b6fc | 45 | #include "plugin.h" |
33b1ed32 | 46 | #include "except.h" |
7bfefa9d | 47 | #include "lto-streamer.h" |
5457b645 | 48 | |
e690b385 | 49 | /* Value of the -G xx switch, and whether it was passed or not. */ |
50 | unsigned HOST_WIDE_INT g_switch_value; | |
51 | bool g_switch_set; | |
52 | ||
e1ab7874 | 53 | /* Same for selective scheduling. */ |
54 | bool sel_sched_switch_set; | |
55 | ||
e690b385 | 56 | /* True if we should exit after parsing options. */ |
57 | bool exit_after_options; | |
58 | ||
6f2f567f | 59 | /* True to warn about any objects definitions whose size is larger |
60 | than N bytes. Also want about function definitions whose returned | |
61 | values are larger than N bytes, where N is `larger_than_size'. */ | |
62 | bool warn_larger_than; | |
63 | HOST_WIDE_INT larger_than_size; | |
64 | ||
6fdade09 | 65 | /* True to warn about any function whose frame size is larger |
66 | * than N bytes. */ | |
67 | bool warn_frame_larger_than; | |
68 | HOST_WIDE_INT frame_larger_than_size; | |
69 | ||
b0e56fb1 | 70 | /* Type(s) of debugging information we are producing (if any). See |
71 | flags.h for the definitions of the different possible types of | |
72 | debugging information. */ | |
73 | enum debug_info_type write_symbols = NO_DEBUG; | |
74 | ||
75 | /* Level of debugging information we are producing. See flags.h for | |
76 | the definitions of the different possible levels. */ | |
77 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
78 | ||
0e4744ac | 79 | /* A major contribution to object and executable size is debug |
80 | information size. A major contribution to debug information size | |
81 | is struct descriptions replicated in several object files. The | |
82 | following flags attempt to reduce this information. The basic | |
83 | idea is to not emit struct debugging information in the current | |
84 | compilation unit when that information will be generated by | |
85 | another compilation unit. | |
86 | ||
87 | Debug information for a struct defined in the current source | |
88 | file should be generated in the object file. Likewise the | |
89 | debug information for a struct defined in a header should be | |
90 | generated in the object file of the corresponding source file. | |
91 | Both of these case are handled when the base name of the file of | |
92 | the struct definition matches the base name of the source file | |
4a7e4fcc | 93 | of the current compilation unit. This matching emits minimal |
0e4744ac | 94 | struct debugging information. |
95 | ||
96 | The base file name matching rule above will fail to emit debug | |
97 | information for structs defined in system headers. So a second | |
98 | category of files includes system headers in addition to files | |
99 | with matching bases. | |
100 | ||
101 | The remaining types of files are library headers and application | |
102 | headers. We cannot currently distinguish these two types. */ | |
103 | ||
104 | enum debug_struct_file | |
105 | { | |
106 | DINFO_STRUCT_FILE_NONE, /* Debug no structs. */ | |
107 | DINFO_STRUCT_FILE_BASE, /* Debug structs defined in files with the | |
108 | same base name as the compilation unit. */ | |
109 | DINFO_STRUCT_FILE_SYS, /* Also debug structs defined in system | |
110 | header files. */ | |
111 | DINFO_STRUCT_FILE_ANY /* Debug structs defined in all files. */ | |
112 | }; | |
113 | ||
114 | /* Generic structs (e.g. templates not explicitly specialized) | |
115 | may not have a compilation unit associated with them, and so | |
116 | may need to be treated differently from ordinary structs. | |
117 | ||
118 | Structs only handled by reference (indirectly), will also usually | |
119 | not need as much debugging information. */ | |
120 | ||
121 | static enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] | |
122 | = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
123 | static enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] | |
124 | = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
125 | ||
126 | /* Parse the -femit-struct-debug-detailed option value | |
127 | and set the flag variables. */ | |
128 | ||
129 | #define MATCH( prefix, string ) \ | |
130 | ((strncmp (prefix, string, sizeof prefix - 1) == 0) \ | |
131 | ? ((string += sizeof prefix - 1), 1) : 0) | |
132 | ||
133 | void | |
134 | set_struct_debug_option (const char *spec) | |
135 | { | |
136 | /* various labels for comparison */ | |
137 | static char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:"; | |
138 | static char ord_lbl[] = "ord:", gen_lbl[] = "gen:"; | |
139 | static char none_lbl[] = "none", any_lbl[] = "any"; | |
140 | static char base_lbl[] = "base", sys_lbl[] = "sys"; | |
141 | ||
142 | enum debug_struct_file files = DINFO_STRUCT_FILE_ANY; | |
143 | /* Default is to apply to as much as possible. */ | |
144 | enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS; | |
145 | int ord = 1, gen = 1; | |
146 | ||
147 | /* What usage? */ | |
148 | if (MATCH (dfn_lbl, spec)) | |
149 | usage = DINFO_USAGE_DFN; | |
150 | else if (MATCH (dir_lbl, spec)) | |
151 | usage = DINFO_USAGE_DIR_USE; | |
152 | else if (MATCH (ind_lbl, spec)) | |
153 | usage = DINFO_USAGE_IND_USE; | |
154 | ||
155 | /* Generics or not? */ | |
156 | if (MATCH (ord_lbl, spec)) | |
157 | gen = 0; | |
158 | else if (MATCH (gen_lbl, spec)) | |
159 | ord = 0; | |
160 | ||
161 | /* What allowable environment? */ | |
162 | if (MATCH (none_lbl, spec)) | |
163 | files = DINFO_STRUCT_FILE_NONE; | |
164 | else if (MATCH (any_lbl, spec)) | |
165 | files = DINFO_STRUCT_FILE_ANY; | |
166 | else if (MATCH (sys_lbl, spec)) | |
167 | files = DINFO_STRUCT_FILE_SYS; | |
168 | else if (MATCH (base_lbl, spec)) | |
169 | files = DINFO_STRUCT_FILE_BASE; | |
170 | else | |
171 | error ("argument %qs to %<-femit-struct-debug-detailed%> not recognized", | |
172 | spec); | |
173 | ||
174 | /* Effect the specification. */ | |
175 | if (usage == DINFO_USAGE_NUM_ENUMS) | |
176 | { | |
177 | if (ord) | |
178 | { | |
179 | debug_struct_ordinary[DINFO_USAGE_DFN] = files; | |
180 | debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files; | |
181 | debug_struct_ordinary[DINFO_USAGE_IND_USE] = files; | |
182 | } | |
183 | if (gen) | |
184 | { | |
185 | debug_struct_generic[DINFO_USAGE_DFN] = files; | |
186 | debug_struct_generic[DINFO_USAGE_DIR_USE] = files; | |
187 | debug_struct_generic[DINFO_USAGE_IND_USE] = files; | |
188 | } | |
189 | } | |
190 | else | |
191 | { | |
192 | if (ord) | |
193 | debug_struct_ordinary[usage] = files; | |
194 | if (gen) | |
195 | debug_struct_generic[usage] = files; | |
196 | } | |
197 | ||
198 | if (*spec == ',') | |
199 | set_struct_debug_option (spec+1); | |
200 | else | |
201 | { | |
202 | /* No more -femit-struct-debug-detailed specifications. | |
203 | Do final checks. */ | |
204 | if (*spec != '\0') | |
205 | error ("argument %qs to %<-femit-struct-debug-detailed%> unknown", | |
206 | spec); | |
207 | if (debug_struct_ordinary[DINFO_USAGE_DIR_USE] | |
208 | < debug_struct_ordinary[DINFO_USAGE_IND_USE] | |
209 | || debug_struct_generic[DINFO_USAGE_DIR_USE] | |
210 | < debug_struct_generic[DINFO_USAGE_IND_USE]) | |
211 | error ("%<-femit-struct-debug-detailed=dir:...%> must allow at least" | |
212 | " as much as %<-femit-struct-debug-detailed=ind:...%>"); | |
213 | } | |
214 | } | |
215 | ||
216 | /* Find the base name of a path, stripping off both directories and | |
217 | a single final extension. */ | |
218 | static int | |
219 | base_of_path (const char *path, const char **base_out) | |
220 | { | |
221 | const char *base = path; | |
222 | const char *dot = 0; | |
223 | const char *p = path; | |
224 | char c = *p; | |
225 | while (c) | |
226 | { | |
227 | if (IS_DIR_SEPARATOR(c)) | |
228 | { | |
229 | base = p + 1; | |
230 | dot = 0; | |
231 | } | |
232 | else if (c == '.') | |
233 | dot = p; | |
234 | c = *++p; | |
235 | } | |
236 | if (!dot) | |
237 | dot = p; | |
238 | *base_out = base; | |
239 | return dot - base; | |
240 | } | |
241 | ||
242 | /* Match the base name of a file to the base name of a compilation unit. */ | |
243 | ||
244 | static const char *main_input_basename; | |
245 | static int main_input_baselength; | |
246 | ||
247 | static int | |
248 | matches_main_base (const char *path) | |
249 | { | |
250 | /* Cache the last query. */ | |
251 | static const char *last_path = NULL; | |
252 | static int last_match = 0; | |
253 | if (path != last_path) | |
254 | { | |
255 | const char *base; | |
256 | int length = base_of_path (path, &base); | |
257 | last_path = path; | |
258 | last_match = (length == main_input_baselength | |
259 | && memcmp (base, main_input_basename, length) == 0); | |
260 | } | |
261 | return last_match; | |
262 | } | |
263 | ||
264 | #ifdef DEBUG_DEBUG_STRUCT | |
265 | ||
266 | static int | |
267 | dump_struct_debug (tree type, enum debug_info_usage usage, | |
268 | enum debug_struct_file criterion, int generic, | |
269 | int matches, int result) | |
270 | { | |
271 | /* Find the type name. */ | |
272 | tree type_decl = TYPE_STUB_DECL (type); | |
273 | tree t = type_decl; | |
274 | const char *name = 0; | |
275 | if (TREE_CODE (t) == TYPE_DECL) | |
276 | t = DECL_NAME (t); | |
277 | if (t) | |
278 | name = IDENTIFIER_POINTER (t); | |
279 | ||
280 | fprintf (stderr, " struct %d %s %s %s %s %d %p %s\n", | |
281 | criterion, | |
282 | DECL_IN_SYSTEM_HEADER (type_decl) ? "sys" : "usr", | |
283 | matches ? "bas" : "hdr", | |
284 | generic ? "gen" : "ord", | |
285 | usage == DINFO_USAGE_DFN ? ";" : | |
286 | usage == DINFO_USAGE_DIR_USE ? "." : "*", | |
287 | result, | |
288 | (void*) type_decl, name); | |
289 | return result; | |
290 | } | |
291 | #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
292 | dump_struct_debug (type, usage, criterion, generic, matches, result) | |
293 | ||
294 | #else | |
295 | ||
296 | #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
297 | (result) | |
298 | ||
299 | #endif | |
300 | ||
301 | ||
302 | bool | |
303 | should_emit_struct_debug (tree type, enum debug_info_usage usage) | |
304 | { | |
305 | enum debug_struct_file criterion; | |
306 | tree type_decl; | |
307 | bool generic = lang_hooks.types.generic_p (type); | |
308 | ||
309 | if (generic) | |
310 | criterion = debug_struct_generic[usage]; | |
311 | else | |
312 | criterion = debug_struct_ordinary[usage]; | |
313 | ||
314 | if (criterion == DINFO_STRUCT_FILE_NONE) | |
315 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
316 | if (criterion == DINFO_STRUCT_FILE_ANY) | |
317 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
318 | ||
319 | type_decl = TYPE_STUB_DECL (type); | |
320 | ||
321 | if (criterion == DINFO_STRUCT_FILE_SYS && DECL_IN_SYSTEM_HEADER (type_decl)) | |
322 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
323 | ||
324 | if (matches_main_base (DECL_SOURCE_FILE (type_decl))) | |
325 | return DUMP_GSTRUCT (type, usage, criterion, generic, true, true); | |
326 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
327 | } | |
328 | ||
b0e56fb1 | 329 | /* Nonzero means use GNU-only extensions in the generated symbolic |
330 | debugging information. Currently, this only has an effect when | |
331 | write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
332 | bool use_gnu_debug_info_extensions; | |
333 | ||
b212f378 | 334 | /* The default visibility for all symbols (unless overridden) */ |
335 | enum symbol_visibility default_visibility = VISIBILITY_DEFAULT; | |
336 | ||
337 | /* Global visibility options. */ | |
338 | struct visibility_flags visibility_options; | |
339 | ||
344c9292 | 340 | /* What to print when a switch has no documentation. */ |
341 | static const char undocumented_msg[] = N_("This switch lacks documentation"); | |
342 | ||
7dea76ba | 343 | /* Used for bookkeeping on whether user set these flags so |
344 | -fprofile-use/-fprofile-generate does not use them. */ | |
345 | static bool profile_arc_flag_set, flag_profile_values_set; | |
346 | static bool flag_unroll_loops_set, flag_tracer_set; | |
347 | static bool flag_value_profile_transformations_set; | |
348 | static bool flag_peel_loops_set, flag_branch_probabilities_set; | |
11b73810 | 349 | static bool flag_inline_functions_set, flag_ipa_cp_set, flag_ipa_cp_clone_set; |
7baffbd3 | 350 | static bool flag_predictive_commoning_set, flag_unswitch_loops_set, flag_gcse_after_reload_set; |
7dea76ba | 351 | |
a95c0776 | 352 | /* Functions excluded from profiling. */ |
353 | ||
354 | typedef char *char_p; /* For DEF_VEC_P. */ | |
355 | DEF_VEC_P(char_p); | |
356 | DEF_VEC_ALLOC_P(char_p,heap); | |
357 | ||
358 | static VEC(char_p,heap) *flag_instrument_functions_exclude_functions; | |
359 | static VEC(char_p,heap) *flag_instrument_functions_exclude_files; | |
360 | ||
ddb48b82 | 361 | typedef const char *const_char_p; /* For DEF_VEC_P. */ |
362 | DEF_VEC_P(const_char_p); | |
363 | DEF_VEC_ALLOC_P(const_char_p,heap); | |
364 | ||
365 | static VEC(const_char_p,heap) *ignored_options; | |
366 | ||
bfec3452 | 367 | /* Language specific warning pass for unused results. */ |
368 | bool flag_warn_unused_result = false; | |
369 | ||
7981458e | 370 | /* Input file names. */ |
dcfa26d9 | 371 | const char **in_fnames; |
372 | unsigned num_in_fnames; | |
373 | ||
76f02516 | 374 | static int common_handle_option (size_t scode, const char *arg, int value, |
375 | unsigned int lang_mask); | |
da3b1bab | 376 | static void handle_param (const char *); |
4838a8b6 | 377 | static unsigned int handle_option (const char **argv, unsigned int lang_mask); |
9cf6679e | 378 | static char *write_langs (unsigned int lang_mask); |
379 | static void complain_wrong_lang (const char *, const struct cl_option *, | |
380 | unsigned int lang_mask); | |
4838a8b6 | 381 | static void handle_options (unsigned int, const char **, unsigned int); |
b0e56fb1 | 382 | static void set_debug_level (enum debug_info_type type, int extended, |
383 | const char *arg); | |
5457b645 | 384 | |
6f2f567f | 385 | /* If ARG is a non-negative integer made up solely of digits, return its |
837277ab | 386 | value, otherwise return -1. */ |
387 | static int | |
388 | integral_argument (const char *arg) | |
389 | { | |
390 | const char *p = arg; | |
391 | ||
392 | while (*p && ISDIGIT (*p)) | |
393 | p++; | |
394 | ||
395 | if (*p == '\0') | |
396 | return atoi (arg); | |
397 | ||
398 | return -1; | |
399 | } | |
400 | ||
9cf6679e | 401 | /* Return a malloced slash-separated list of languages in MASK. */ |
402 | static char * | |
403 | write_langs (unsigned int mask) | |
404 | { | |
405 | unsigned int n = 0, len = 0; | |
406 | const char *lang_name; | |
407 | char *result; | |
408 | ||
409 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
410 | if (mask & (1U << n)) | |
411 | len += strlen (lang_name) + 1; | |
412 | ||
4c36ffe6 | 413 | result = XNEWVEC (char, len); |
9cf6679e | 414 | len = 0; |
415 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
416 | if (mask & (1U << n)) | |
417 | { | |
418 | if (len) | |
419 | result[len++] = '/'; | |
420 | strcpy (result + len, lang_name); | |
421 | len += strlen (lang_name); | |
422 | } | |
423 | ||
424 | result[len] = 0; | |
425 | ||
426 | return result; | |
427 | } | |
428 | ||
429 | /* Complain that switch OPT_INDEX does not apply to this front end. */ | |
430 | static void | |
431 | complain_wrong_lang (const char *text, const struct cl_option *option, | |
432 | unsigned int lang_mask) | |
433 | { | |
434 | char *ok_langs, *bad_lang; | |
435 | ||
7bfefa9d | 436 | /* The LTO front end inherits all the options from the first front |
437 | end that was used. However, not all the original front end | |
438 | options make sense in LTO. | |
48e1416a | 439 | |
7bfefa9d | 440 | A real solution would be to filter this in collect2, but collect2 |
441 | does not have access to all the option attributes to know what to | |
442 | filter. So, in lto1 we silently accept inherited flags and do | |
443 | nothing about it. */ | |
444 | if (lang_mask & CL_LTO) | |
445 | return; | |
446 | ||
9cf6679e | 447 | ok_langs = write_langs (option->flags); |
448 | bad_lang = write_langs (lang_mask); | |
449 | ||
450 | /* Eventually this should become a hard error IMO. */ | |
c3ceba8e | 451 | warning (0, "command line option \"%s\" is valid for %s but not for %s", |
9cf6679e | 452 | text, ok_langs, bad_lang); |
453 | ||
454 | free (ok_langs); | |
455 | free (bad_lang); | |
456 | } | |
457 | ||
ddb48b82 | 458 | /* Buffer the unknown option described by the string OPT. Currently, |
459 | we only complain about unknown -Wno-* options if they may have | |
02b841e2 | 460 | prevented a diagnostic. Otherwise, we just ignore them. |
461 | Note that if we do complain, it is only as a warning, not an error; | |
462 | passing the compiler an unrecognised -Wno-* option should never | |
463 | change whether the compilation succeeds or fails. */ | |
ddb48b82 | 464 | |
02b841e2 | 465 | static void postpone_unknown_option_warning(const char *opt) |
ddb48b82 | 466 | { |
467 | VEC_safe_push (const_char_p, heap, ignored_options, opt); | |
468 | } | |
469 | ||
02b841e2 | 470 | /* Produce a warning for each option previously buffered. */ |
ddb48b82 | 471 | |
472 | void print_ignored_options (void) | |
473 | { | |
474 | location_t saved_loc = input_location; | |
475 | ||
476 | input_location = 0; | |
477 | ||
478 | while (!VEC_empty (const_char_p, ignored_options)) | |
479 | { | |
480 | const char *opt; | |
481 | opt = VEC_pop (const_char_p, ignored_options); | |
02b841e2 | 482 | warning (0, "unrecognized command line option \"%s\"", opt); |
ddb48b82 | 483 | } |
484 | ||
485 | input_location = saved_loc; | |
486 | } | |
487 | ||
9cf6679e | 488 | /* Handle the switch beginning at ARGV for the language indicated by |
489 | LANG_MASK. Returns the number of switches consumed. */ | |
490 | static unsigned int | |
4838a8b6 | 491 | handle_option (const char **argv, unsigned int lang_mask) |
5457b645 | 492 | { |
493 | size_t opt_index; | |
494 | const char *opt, *arg = 0; | |
495 | char *dup = 0; | |
837277ab | 496 | int value = 1; |
9cf6679e | 497 | unsigned int result = 0; |
5457b645 | 498 | const struct cl_option *option; |
499 | ||
5457b645 | 500 | opt = argv[0]; |
501 | ||
ff05e09e | 502 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
503 | if (opt_index == cl_options_count | |
504 | && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') | |
76bf7746 | 505 | && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') |
5457b645 | 506 | { |
ff05e09e | 507 | /* Drop the "no-" from negative switches. */ |
76bf7746 | 508 | size_t len = strlen (opt) - 3; |
509 | ||
4c36ffe6 | 510 | dup = XNEWVEC (char, len + 1); |
76bf7746 | 511 | dup[0] = '-'; |
512 | dup[1] = opt[1]; | |
513 | memcpy (dup + 2, opt + 5, len - 2 + 1); | |
514 | opt = dup; | |
515 | value = 0; | |
ff05e09e | 516 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
88d4fcc4 | 517 | if (opt_index == cl_options_count && opt[1] == 'W') |
ddb48b82 | 518 | { |
02b841e2 | 519 | /* We don't generate warnings for unknown -Wno-* options |
ddb48b82 | 520 | unless we issue diagnostics. */ |
02b841e2 | 521 | postpone_unknown_option_warning (argv[0]); |
ddb48b82 | 522 | result = 1; |
523 | goto done; | |
524 | } | |
5457b645 | 525 | } |
5457b645 | 526 | |
76bf7746 | 527 | if (opt_index == cl_options_count) |
6c3bc3be | 528 | goto done; |
5457b645 | 529 | |
76bf7746 | 530 | option = &cl_options[opt_index]; |
5457b645 | 531 | |
76bf7746 | 532 | /* Reject negative form of switches that don't take negatives as |
533 | unrecognized. */ | |
534 | if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
535 | goto done; | |
5457b645 | 536 | |
76bf7746 | 537 | /* We've recognized this switch. */ |
538 | result = 1; | |
5457b645 | 539 | |
5c5ccba2 | 540 | /* Check to see if the option is disabled for this configuration. */ |
541 | if (option->flags & CL_DISABLED) | |
542 | { | |
543 | error ("command line option %qs" | |
544 | " is not supported by this configuration", opt); | |
545 | goto done; | |
546 | } | |
547 | ||
76bf7746 | 548 | /* Sort out any argument the switch takes. */ |
549 | if (option->flags & CL_JOINED) | |
550 | { | |
551 | /* Have arg point to the original switch. This is because | |
552 | some code, such as disable_builtin_function, expects its | |
553 | argument to be persistent until the program exits. */ | |
554 | arg = argv[0] + cl_options[opt_index].opt_len + 1; | |
555 | if (!value) | |
556 | arg += strlen ("no-"); | |
557 | ||
558 | if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
5457b645 | 559 | { |
76bf7746 | 560 | if (option->flags & CL_SEPARATE) |
5457b645 | 561 | { |
76bf7746 | 562 | arg = argv[1]; |
563 | result = 2; | |
5457b645 | 564 | } |
76bf7746 | 565 | else |
566 | /* Missing argument. */ | |
567 | arg = NULL; | |
837277ab | 568 | } |
76bf7746 | 569 | } |
570 | else if (option->flags & CL_SEPARATE) | |
571 | { | |
572 | arg = argv[1]; | |
573 | result = 2; | |
574 | } | |
5457b645 | 575 | |
76bf7746 | 576 | /* Now we've swallowed any potential argument, complain if this |
577 | is a switch for a different front end. */ | |
ff05e09e | 578 | if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET))) |
76bf7746 | 579 | { |
580 | complain_wrong_lang (argv[0], option, lang_mask); | |
581 | goto done; | |
582 | } | |
b9fc964a | 583 | else if ((option->flags & CL_TARGET) |
584 | && (option->flags & CL_LANG_ALL) | |
585 | && !(option->flags & lang_mask)) | |
586 | { | |
587 | /* Complain for target flag language mismatches if any languages | |
588 | are specified. */ | |
589 | complain_wrong_lang (argv[0], option, lang_mask); | |
590 | goto done; | |
591 | } | |
9cf6679e | 592 | |
76bf7746 | 593 | if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE))) |
594 | { | |
dc24ddbd | 595 | if (!lang_hooks.missing_argument (opt, opt_index)) |
76bf7746 | 596 | error ("missing argument to \"%s\"", opt); |
597 | goto done; | |
598 | } | |
29689179 | 599 | |
76bf7746 | 600 | /* If the switch takes an integer, convert it. */ |
601 | if (arg && (option->flags & CL_UINTEGER)) | |
602 | { | |
603 | value = integral_argument (arg); | |
604 | if (value == -1) | |
837277ab | 605 | { |
53b8e5c1 | 606 | error ("argument to \"%s\" should be a non-negative integer", |
76bf7746 | 607 | option->opt_text); |
608 | goto done; | |
5457b645 | 609 | } |
76bf7746 | 610 | } |
5457b645 | 611 | |
2e9da478 | 612 | if (option->flag_var) |
b7f7149b | 613 | set_option (option, value, arg); |
87c75316 | 614 | |
76bf7746 | 615 | if (option->flags & lang_mask) |
7bfefa9d | 616 | { |
617 | if (lang_hooks.handle_option (opt_index, arg, value) == 0) | |
618 | result = 0; | |
619 | else | |
620 | lto_register_user_option (opt_index, arg, value, lang_mask); | |
621 | } | |
3272db82 | 622 | |
76bf7746 | 623 | if (result && (option->flags & CL_COMMON)) |
7bfefa9d | 624 | { |
625 | if (common_handle_option (opt_index, arg, value, lang_mask) == 0) | |
626 | result = 0; | |
627 | else | |
628 | lto_register_user_option (opt_index, arg, value, CL_COMMON); | |
629 | } | |
5457b645 | 630 | |
ff05e09e | 631 | if (result && (option->flags & CL_TARGET)) |
7bfefa9d | 632 | { |
633 | if (!targetm.handle_option (opt_index, arg, value)) | |
634 | result = 0; | |
635 | else | |
636 | lto_register_user_option (opt_index, arg, value, CL_TARGET); | |
637 | } | |
ff05e09e | 638 | |
5457b645 | 639 | done: |
640 | if (dup) | |
641 | free (dup); | |
642 | return result; | |
643 | } | |
3272db82 | 644 | |
06ac2f3d | 645 | /* Handle FILENAME from the command line. */ |
646 | static void | |
647 | add_input_filename (const char *filename) | |
648 | { | |
649 | num_in_fnames++; | |
4077bf7a | 650 | in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames); |
06ac2f3d | 651 | in_fnames[num_in_fnames - 1] = filename; |
652 | } | |
653 | ||
b5f30e7c | 654 | /* Add comma-separated strings to a char_p vector. */ |
a95c0776 | 655 | |
656 | static void | |
b5f30e7c | 657 | add_comma_separated_to_vector (VEC(char_p,heap) **pvec, const char* arg) |
a95c0776 | 658 | { |
659 | char *tmp; | |
660 | char *r; | |
661 | char *w; | |
662 | char *token_start; | |
663 | ||
664 | /* We never free this string. */ | |
665 | tmp = xstrdup (arg); | |
666 | ||
667 | r = tmp; | |
668 | w = tmp; | |
669 | token_start = tmp; | |
670 | ||
671 | while (*r != '\0') | |
672 | { | |
673 | if (*r == ',') | |
674 | { | |
675 | *w++ = '\0'; | |
676 | ++r; | |
677 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
678 | token_start = w; | |
679 | } | |
680 | if (*r == '\\' && r[1] == ',') | |
681 | { | |
682 | *w++ = ','; | |
683 | r += 2; | |
684 | } | |
685 | else | |
686 | *w++ = *r++; | |
687 | } | |
688 | if (*token_start != '\0') | |
689 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
690 | } | |
691 | ||
692 | /* Return whether we should exclude FNDECL from instrumentation. */ | |
693 | ||
694 | bool | |
695 | flag_instrument_functions_exclude_p (tree fndecl) | |
696 | { | |
697 | if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0) | |
698 | { | |
699 | const char *name; | |
700 | int i; | |
701 | char *s; | |
702 | ||
703 | name = lang_hooks.decl_printable_name (fndecl, 0); | |
704 | for (i = 0; | |
705 | VEC_iterate (char_p, flag_instrument_functions_exclude_functions, | |
706 | i, s); | |
707 | ++i) | |
708 | { | |
709 | if (strstr (name, s) != NULL) | |
710 | return true; | |
711 | } | |
712 | } | |
713 | ||
714 | if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0) | |
715 | { | |
716 | const char *name; | |
717 | int i; | |
718 | char *s; | |
719 | ||
720 | name = DECL_SOURCE_FILE (fndecl); | |
721 | for (i = 0; | |
722 | VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s); | |
723 | ++i) | |
724 | { | |
725 | if (strstr (name, s) != NULL) | |
726 | return true; | |
727 | } | |
728 | } | |
729 | ||
730 | return false; | |
731 | } | |
732 | ||
b5f30e7c | 733 | |
9cf6679e | 734 | /* Decode and handle the vector of command line options. LANG_MASK |
735 | contains has a single bit set representing the current | |
736 | language. */ | |
f5d971c5 | 737 | static void |
4838a8b6 | 738 | handle_options (unsigned int argc, const char **argv, unsigned int lang_mask) |
9cf6679e | 739 | { |
740 | unsigned int n, i; | |
741 | ||
742 | for (i = 1; i < argc; i += n) | |
743 | { | |
76bf7746 | 744 | const char *opt = argv[i]; |
745 | ||
746 | /* Interpret "-" or a non-switch as a file name. */ | |
747 | if (opt[0] != '-' || opt[1] == '\0') | |
748 | { | |
d732fcf0 | 749 | if (main_input_filename == NULL) |
0e4744ac | 750 | { |
86895a67 | 751 | main_input_filename = opt; |
0e4744ac | 752 | main_input_baselength |
753 | = base_of_path (main_input_filename, &main_input_basename); | |
754 | } | |
dcfa26d9 | 755 | add_input_filename (opt); |
76bf7746 | 756 | n = 1; |
757 | continue; | |
758 | } | |
759 | ||
9cf6679e | 760 | n = handle_option (argv + i, lang_mask); |
761 | ||
762 | if (!n) | |
763 | { | |
764 | n = 1; | |
76bf7746 | 765 | error ("unrecognized command line option \"%s\"", opt); |
9cf6679e | 766 | } |
767 | } | |
768 | } | |
769 | ||
f5d971c5 | 770 | /* Parse command line options and set default flag values. Do minimal |
771 | options processing. */ | |
772 | void | |
4838a8b6 | 773 | decode_options (unsigned int argc, const char **argv) |
f5d971c5 | 774 | { |
46f8e3b0 | 775 | static bool first_time_p = true; |
46f8e3b0 | 776 | static int initial_min_crossjump_insns; |
777 | static int initial_max_fields_for_field_sensitive; | |
86482d6b | 778 | static int initial_loop_invariant_max_bbs_in_loop; |
46f8e3b0 | 779 | static unsigned int initial_lang_mask; |
f5d971c5 | 780 | |
46f8e3b0 | 781 | unsigned int i, lang_mask; |
782 | int opt1; | |
783 | int opt2; | |
784 | int opt3; | |
785 | int opt1_max; | |
f5d971c5 | 786 | |
46f8e3b0 | 787 | if (first_time_p) |
788 | { | |
789 | /* Perform language-specific options initialization. */ | |
790 | initial_lang_mask = lang_mask = lang_hooks.init_options (argc, argv); | |
791 | ||
792 | lang_hooks.initialize_diagnostics (global_dc); | |
793 | ||
794 | /* Save initial values of parameters we reset. */ | |
46f8e3b0 | 795 | initial_min_crossjump_insns |
796 | = compiler_params[PARAM_MIN_CROSSJUMP_INSNS].value; | |
797 | initial_max_fields_for_field_sensitive | |
798 | = compiler_params[PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE].value; | |
86482d6b | 799 | initial_loop_invariant_max_bbs_in_loop |
800 | = compiler_params[PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP].value; | |
46f8e3b0 | 801 | } |
802 | else | |
803 | lang_mask = initial_lang_mask; | |
f63da8d3 | 804 | |
f5d971c5 | 805 | /* Scan to see what optimization level has been specified. That will |
806 | determine the default value of many flags. */ | |
807 | for (i = 1; i < argc; i++) | |
808 | { | |
809 | if (!strcmp (argv[i], "-O")) | |
810 | { | |
811 | optimize = 1; | |
812 | optimize_size = 0; | |
813 | } | |
814 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
815 | { | |
816 | /* Handle -Os, -O2, -O3, -O69, ... */ | |
4838a8b6 | 817 | const char *p = &argv[i][2]; |
f5d971c5 | 818 | |
819 | if ((p[0] == 's') && (p[1] == 0)) | |
820 | { | |
821 | optimize_size = 1; | |
822 | ||
823 | /* Optimizing for size forces optimize to be 2. */ | |
824 | optimize = 2; | |
825 | } | |
826 | else | |
827 | { | |
828 | const int optimize_val = read_integral_parameter (p, p - 2, -1); | |
829 | if (optimize_val != -1) | |
830 | { | |
831 | optimize = optimize_val; | |
832 | optimize_size = 0; | |
833 | } | |
834 | } | |
835 | } | |
836 | } | |
48e1416a | 837 | |
14792f4e | 838 | /* Use priority coloring if cover classes is not defined for the |
839 | target. */ | |
840 | if (targetm.ira_cover_classes == NULL) | |
841 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
47dd2e78 | 842 | |
46f8e3b0 | 843 | /* -O1 optimizations. */ |
844 | opt1 = (optimize >= 1); | |
845 | flag_defer_pop = opt1; | |
f5d971c5 | 846 | #ifdef DELAY_SLOTS |
46f8e3b0 | 847 | flag_delayed_branch = opt1; |
f5d971c5 | 848 | #endif |
849 | #ifdef CAN_DEBUG_WITHOUT_FP | |
46f8e3b0 | 850 | flag_omit_frame_pointer = opt1; |
f5d971c5 | 851 | #endif |
46f8e3b0 | 852 | flag_guess_branch_prob = opt1; |
853 | flag_cprop_registers = opt1; | |
e0bd4156 | 854 | flag_forward_propagate = opt1; |
46f8e3b0 | 855 | flag_if_conversion = opt1; |
856 | flag_if_conversion2 = opt1; | |
857 | flag_ipa_pure_const = opt1; | |
858 | flag_ipa_reference = opt1; | |
cd8171dd | 859 | flag_merge_constants = opt1; |
46f8e3b0 | 860 | flag_split_wide_types = opt1; |
861 | flag_tree_ccp = opt1; | |
862 | flag_tree_dce = opt1; | |
863 | flag_tree_dom = opt1; | |
864 | flag_tree_dse = opt1; | |
865 | flag_tree_ter = opt1; | |
866 | flag_tree_sra = opt1; | |
867 | flag_tree_copyrename = opt1; | |
868 | flag_tree_fre = opt1; | |
869 | flag_tree_copy_prop = opt1; | |
870 | flag_tree_sink = opt1; | |
871 | flag_tree_ch = opt1; | |
872 | ||
873 | /* -O2 optimizations. */ | |
874 | opt2 = (optimize >= 2); | |
875 | flag_inline_small_functions = opt2; | |
f8daee9b | 876 | flag_indirect_inlining = opt2; |
46f8e3b0 | 877 | flag_thread_jumps = opt2; |
878 | flag_crossjumping = opt2; | |
879 | flag_optimize_sibling_calls = opt2; | |
46f8e3b0 | 880 | flag_cse_follow_jumps = opt2; |
881 | flag_gcse = opt2; | |
882 | flag_expensive_optimizations = opt2; | |
883 | flag_rerun_cse_after_loop = opt2; | |
884 | flag_caller_saves = opt2; | |
885 | flag_peephole2 = opt2; | |
f5d971c5 | 886 | #ifdef INSN_SCHEDULING |
155e5bd9 | 887 | /* Only run the pre-regalloc scheduling pass if optimizing for speed. */ |
888 | flag_schedule_insns = opt2 && ! optimize_size; | |
46f8e3b0 | 889 | flag_schedule_insns_after_reload = opt2; |
f5d971c5 | 890 | #endif |
46f8e3b0 | 891 | flag_regmove = opt2; |
892 | flag_strict_aliasing = opt2; | |
893 | flag_strict_overflow = opt2; | |
46f8e3b0 | 894 | flag_reorder_blocks = opt2; |
895 | flag_reorder_functions = opt2; | |
46f8e3b0 | 896 | flag_tree_vrp = opt2; |
897 | flag_tree_builtin_call_dce = opt2; | |
898 | flag_tree_pre = opt2; | |
4612996b | 899 | flag_tree_switch_conversion = 1; |
900 | flag_ipa_cp = opt2; | |
bc5fa702 | 901 | flag_ipa_sra = opt2; |
523a88b0 | 902 | |
46f8e3b0 | 903 | /* Track fields in field-sensitive alias analysis. */ |
904 | set_param_value ("max-fields-for-field-sensitive", | |
905 | (opt2) ? 100 : initial_max_fields_for_field_sensitive); | |
c227f8de | 906 | |
86482d6b | 907 | /* For -O1 only do loop invariant motion for very small loops. */ |
908 | set_param_value ("loop-invariant-max-bbs-in-loop", | |
909 | (opt2) ? initial_loop_invariant_max_bbs_in_loop : 1000); | |
910 | ||
46f8e3b0 | 911 | /* -O3 optimizations. */ |
912 | opt3 = (optimize >= 3); | |
913 | flag_predictive_commoning = opt3; | |
914 | flag_inline_functions = opt3; | |
915 | flag_unswitch_loops = opt3; | |
916 | flag_gcse_after_reload = opt3; | |
917 | flag_tree_vectorize = opt3; | |
4612996b | 918 | flag_ipa_cp_clone = opt3; |
919 | if (flag_ipa_cp_clone) | |
920 | flag_ipa_cp = 1; | |
46f8e3b0 | 921 | |
46f8e3b0 | 922 | /* Just -O1/-O0 optimizations. */ |
923 | opt1_max = (optimize <= 1); | |
924 | align_loops = opt1_max; | |
925 | align_jumps = opt1_max; | |
926 | align_labels = opt1_max; | |
927 | align_functions = opt1_max; | |
928 | ||
929 | if (optimize_size) | |
f5d971c5 | 930 | { |
46f8e3b0 | 931 | /* Inlining of functions reducing size is a good idea regardless of them |
932 | being declared inline. */ | |
933 | flag_inline_functions = 1; | |
934 | ||
46f8e3b0 | 935 | /* Basic optimization options. */ |
936 | optimize_size = 1; | |
937 | if (optimize > 2) | |
938 | optimize = 2; | |
9eb0191e | 939 | |
940 | /* We want to crossjump as much as possible. */ | |
941 | set_param_value ("min-crossjump-insns", 1); | |
8ba44f35 | 942 | } |
46f8e3b0 | 943 | else |
944 | set_param_value ("min-crossjump-insns", initial_min_crossjump_insns); | |
8ba44f35 | 945 | |
46f8e3b0 | 946 | if (first_time_p) |
947 | { | |
948 | /* Initialize whether `char' is signed. */ | |
949 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
950 | /* Set this to a special "uninitialized" value. The actual default is | |
951 | set after target options have been processed. */ | |
952 | flag_short_enums = 2; | |
953 | ||
954 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can | |
955 | modify it. */ | |
956 | target_flags = targetm.default_target_flags; | |
957 | ||
958 | /* Some targets have ABI-specified unwind tables. */ | |
959 | flag_unwind_tables = targetm.unwind_tables_default; | |
960 | } | |
f5d971c5 | 961 | |
7bfefa9d | 962 | /* Clear any options currently held for LTO. */ |
963 | lto_clear_user_options (); | |
964 | ||
f5d971c5 | 965 | #ifdef OPTIMIZATION_OPTIONS |
966 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
967 | OPTIMIZATION_OPTIONS (optimize, optimize_size); | |
968 | #endif | |
969 | ||
970 | handle_options (argc, argv, lang_mask); | |
971 | ||
b2d31ed6 | 972 | /* Make DUMP_BASE_NAME relative to the AUX_BASE_NAME directory, |
973 | typically the directory to contain the object file. */ | |
974 | if (aux_base_name && ! IS_ABSOLUTE_PATH (dump_base_name)) | |
975 | { | |
976 | const char *aux_base; | |
977 | ||
978 | base_of_path (aux_base_name, &aux_base); | |
979 | if (aux_base_name != aux_base) | |
980 | { | |
981 | int dir_len = aux_base - aux_base_name; | |
982 | char *new_dump_base_name = | |
983 | XNEWVEC (char, strlen(dump_base_name) + dir_len + 1); | |
984 | ||
985 | /* Copy directory component from AUX_BASE_NAME. */ | |
986 | memcpy (new_dump_base_name, aux_base_name, dir_len); | |
987 | /* Append existing DUMP_BASE_NAME. */ | |
988 | strcpy (new_dump_base_name + dir_len, dump_base_name); | |
989 | dump_base_name = new_dump_base_name; | |
990 | } | |
991 | } | |
992 | ||
91bfa5c6 | 993 | /* Handle related options for unit-at-a-time, toplevel-reorder, and |
994 | section-anchors. */ | |
cd8171dd | 995 | if (!flag_unit_at_a_time) |
996 | { | |
91bfa5c6 | 997 | if (flag_section_anchors == 1) |
998 | error ("Section anchors must be disabled when unit-at-a-time " | |
999 | "is disabled."); | |
cd8171dd | 1000 | flag_section_anchors = 0; |
91bfa5c6 | 1001 | if (flag_toplevel_reorder == 1) |
1002 | error ("Toplevel reorder must be disabled when unit-at-a-time " | |
1003 | "is disabled."); | |
cd8171dd | 1004 | flag_toplevel_reorder = 0; |
1005 | } | |
a227c9ef | 1006 | /* Unless the user has asked for section anchors, we disable toplevel |
1007 | reordering at -O0 to disable transformations that might be surprising | |
1008 | to end users and to get -fno-toplevel-reorder tested. */ | |
1009 | if (!optimize && flag_toplevel_reorder == 2 && flag_section_anchors != 1) | |
91bfa5c6 | 1010 | { |
a227c9ef | 1011 | flag_toplevel_reorder = 0; |
1012 | flag_section_anchors = 0; | |
91bfa5c6 | 1013 | } |
1014 | if (!flag_toplevel_reorder) | |
cd8171dd | 1015 | { |
1016 | if (flag_section_anchors == 1) | |
91bfa5c6 | 1017 | error ("section anchors must be disabled when toplevel reorder" |
1018 | " is disabled"); | |
cd8171dd | 1019 | flag_section_anchors = 0; |
1020 | } | |
1021 | ||
46f8e3b0 | 1022 | if (first_time_p) |
1023 | { | |
1024 | if (flag_pie) | |
1025 | flag_pic = flag_pie; | |
1026 | if (flag_pic && !flag_pie) | |
1027 | flag_shlib = 1; | |
46f8e3b0 | 1028 | } |
f5d971c5 | 1029 | |
f5d971c5 | 1030 | if (optimize == 0) |
1031 | { | |
1032 | /* Inlining does not work if not optimizing, | |
1033 | so force it not to be done. */ | |
f5d971c5 | 1034 | warn_inline = 0; |
1c2f0012 | 1035 | flag_no_inline = 1; |
f5d971c5 | 1036 | } |
1037 | ||
4f18499c | 1038 | /* The optimization to partition hot and cold basic blocks into separate |
1039 | sections of the .o and executable files does not work (currently) | |
8de492c3 | 1040 | with exception handling. This is because there is no support for |
1041 | generating unwind info. If flag_exceptions is turned on we need to | |
4f18499c | 1042 | turn off the partitioning optimization. */ |
1043 | ||
33b1ed32 | 1044 | if (flag_exceptions && flag_reorder_blocks_and_partition |
1045 | && (USING_SJLJ_EXCEPTIONS | |
1046 | #ifdef TARGET_UNWIND_INFO | |
1047 | || 1 | |
1048 | #endif | |
1049 | )) | |
4f18499c | 1050 | { |
48e1416a | 1051 | inform (input_location, |
33b1ed32 | 1052 | "-freorder-blocks-and-partition does not work with exceptions on this architecture"); |
4f18499c | 1053 | flag_reorder_blocks_and_partition = 0; |
1054 | flag_reorder_blocks = 1; | |
1055 | } | |
4d0e931f | 1056 | |
8de492c3 | 1057 | /* If user requested unwind info, then turn off the partitioning |
1058 | optimization. */ | |
1059 | ||
1060 | if (flag_unwind_tables && ! targetm.unwind_tables_default | |
33b1ed32 | 1061 | && flag_reorder_blocks_and_partition |
1062 | && (USING_SJLJ_EXCEPTIONS | |
1063 | #ifdef TARGET_UNWIND_INFO | |
1064 | || 1 | |
1065 | #endif | |
1066 | )) | |
8de492c3 | 1067 | { |
33b1ed32 | 1068 | inform (input_location, |
1069 | "-freorder-blocks-and-partition does not support unwind info on this architecture"); | |
8de492c3 | 1070 | flag_reorder_blocks_and_partition = 0; |
1071 | flag_reorder_blocks = 1; | |
1072 | } | |
1073 | ||
1074 | /* If the target requested unwind info, then turn off the partitioning | |
1075 | optimization with a different message. Likewise, if the target does not | |
1076 | support named sections. */ | |
1077 | ||
4d0e931f | 1078 | if (flag_reorder_blocks_and_partition |
8de492c3 | 1079 | && (!targetm.have_named_sections |
33b1ed32 | 1080 | || (flag_unwind_tables && targetm.unwind_tables_default |
1081 | && (USING_SJLJ_EXCEPTIONS | |
1082 | #ifdef TARGET_UNWIND_INFO | |
1083 | || 1 | |
1084 | #endif | |
1085 | )))) | |
4d0e931f | 1086 | { |
5bcc316e | 1087 | inform (input_location, |
1088 | "-freorder-blocks-and-partition does not work on this architecture"); | |
4d0e931f | 1089 | flag_reorder_blocks_and_partition = 0; |
1090 | flag_reorder_blocks = 1; | |
1091 | } | |
46f8e3b0 | 1092 | |
e1ab7874 | 1093 | /* Pipelining of outer loops is only possible when general pipelining |
1094 | capabilities are requested. */ | |
1095 | if (!flag_sel_sched_pipelining) | |
1096 | flag_sel_sched_pipelining_outer_loops = 0; | |
1097 | ||
cf709bf6 | 1098 | if (!targetm.ira_cover_classes |
14792f4e | 1099 | && flag_ira_algorithm == IRA_ALGORITHM_CB) |
47dd2e78 | 1100 | { |
14792f4e | 1101 | inform (input_location, |
1102 | "-fira-algorithm=CB does not work on this architecture"); | |
1103 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
47dd2e78 | 1104 | } |
47dd2e78 | 1105 | |
46f8e3b0 | 1106 | /* Save the current optimization options if this is the first call. */ |
1107 | if (first_time_p) | |
1108 | { | |
1109 | optimization_default_node = build_optimization_node (); | |
1110 | optimization_current_node = optimization_default_node; | |
1111 | first_time_p = false; | |
1112 | } | |
c231842d | 1113 | if (flag_conserve_stack) |
1114 | { | |
1115 | if (!PARAM_SET_P (PARAM_LARGE_STACK_FRAME)) | |
1116 | PARAM_VALUE (PARAM_LARGE_STACK_FRAME) = 100; | |
1117 | if (!PARAM_SET_P (PARAM_STACK_FRAME_GROWTH)) | |
1118 | PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40; | |
1119 | } | |
1120 | ||
6756f4d2 | 1121 | if (flag_lto || flag_whopr) |
1122 | { | |
1123 | #ifdef ENABLE_LTO | |
1124 | flag_generate_lto = 1; | |
1125 | ||
1126 | /* When generating IL, do not operate in whole-program mode. | |
1127 | Otherwise, symbols will be privatized too early, causing link | |
1128 | errors later. */ | |
1129 | flag_whole_program = 0; | |
1130 | ||
1131 | /* FIXME lto. Disable var-tracking until debug information | |
1132 | is properly handled in free_lang_data. */ | |
1133 | flag_var_tracking = 0; | |
1134 | #else | |
1135 | error ("LTO support has not been enabled in this configuration"); | |
1136 | #endif | |
1137 | } | |
1138 | ||
1139 | /* Reconcile -flto and -fwhopr. Set additional flags as appropriate and | |
1140 | check option consistency. */ | |
1141 | if (flag_lto && flag_whopr) | |
1142 | error ("-flto and -fwhopr are mutually exclusive"); | |
f5d971c5 | 1143 | } |
1144 | ||
87c75316 | 1145 | #define LEFT_COLUMN 27 |
1146 | ||
1147 | /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
1148 | followed by word-wrapped HELP in a second column. */ | |
1149 | static void | |
1150 | wrap_help (const char *help, | |
1151 | const char *item, | |
1152 | unsigned int item_width, | |
1153 | unsigned int columns) | |
1154 | { | |
1155 | unsigned int col_width = LEFT_COLUMN; | |
1156 | unsigned int remaining, room, len; | |
1157 | ||
1158 | remaining = strlen (help); | |
1159 | ||
1160 | do | |
1161 | { | |
1162 | room = columns - 3 - MAX (col_width, item_width); | |
1163 | if (room > columns) | |
1164 | room = 0; | |
1165 | len = remaining; | |
1166 | ||
1167 | if (room < len) | |
1168 | { | |
1169 | unsigned int i; | |
1170 | ||
1171 | for (i = 0; help[i]; i++) | |
1172 | { | |
1173 | if (i >= room && len != remaining) | |
1174 | break; | |
1175 | if (help[i] == ' ') | |
1176 | len = i; | |
1177 | else if ((help[i] == '-' || help[i] == '/') | |
1178 | && help[i + 1] != ' ' | |
1179 | && i > 0 && ISALPHA (help[i - 1])) | |
1180 | len = i + 1; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | printf( " %-*.*s %.*s\n", col_width, item_width, item, len, help); | |
1185 | item_width = 0; | |
1186 | while (help[len] == ' ') | |
1187 | len++; | |
1188 | help += len; | |
1189 | remaining -= len; | |
1190 | } | |
1191 | while (remaining); | |
1192 | } | |
1193 | ||
1194 | /* Print help for a specific front-end, etc. */ | |
1195 | static void | |
1196 | print_filtered_help (unsigned int include_flags, | |
1197 | unsigned int exclude_flags, | |
1198 | unsigned int any_flags, | |
1199 | unsigned int columns) | |
1200 | { | |
1201 | unsigned int i; | |
1202 | const char *help; | |
1203 | static char *printed = NULL; | |
1204 | bool found = false; | |
1205 | bool displayed = false; | |
1206 | ||
1207 | if (include_flags == CL_PARAMS) | |
1208 | { | |
1209 | for (i = 0; i < LAST_PARAM; i++) | |
1210 | { | |
1211 | const char *param = compiler_params[i].option; | |
1212 | ||
1213 | help = compiler_params[i].help; | |
1214 | if (help == NULL || *help == '\0') | |
1215 | { | |
1216 | if (exclude_flags & CL_UNDOCUMENTED) | |
1217 | continue; | |
1218 | help = undocumented_msg; | |
1219 | } | |
1220 | ||
1221 | /* Get the translation. */ | |
1222 | help = _(help); | |
1223 | ||
1224 | wrap_help (help, param, strlen (param), columns); | |
1225 | } | |
1226 | putchar ('\n'); | |
1227 | return; | |
1228 | } | |
1229 | ||
1230 | if (!printed) | |
4077bf7a | 1231 | printed = XCNEWVAR (char, cl_options_count); |
87c75316 | 1232 | |
1233 | for (i = 0; i < cl_options_count; i++) | |
1234 | { | |
1235 | static char new_help[128]; | |
1236 | const struct cl_option *option = cl_options + i; | |
1237 | unsigned int len; | |
1238 | const char *opt; | |
1239 | const char *tab; | |
1240 | ||
1241 | if (include_flags == 0 | |
1242 | || ((option->flags & include_flags) != include_flags)) | |
1243 | { | |
1244 | if ((option->flags & any_flags) == 0) | |
1245 | continue; | |
1246 | } | |
1247 | ||
1248 | /* Skip unwanted switches. */ | |
1249 | if ((option->flags & exclude_flags) != 0) | |
1250 | continue; | |
1251 | ||
1252 | found = true; | |
1253 | /* Skip switches that have already been printed. */ | |
1254 | if (printed[i]) | |
1255 | continue; | |
1256 | ||
1257 | printed[i] = true; | |
1258 | ||
1259 | help = option->help; | |
1260 | if (help == NULL) | |
1261 | { | |
1262 | if (exclude_flags & CL_UNDOCUMENTED) | |
1263 | continue; | |
1264 | help = undocumented_msg; | |
1265 | } | |
1266 | ||
1267 | /* Get the translation. */ | |
1268 | help = _(help); | |
1269 | ||
1270 | /* Find the gap between the name of the | |
1271 | option and its descriptive text. */ | |
1272 | tab = strchr (help, '\t'); | |
1273 | if (tab) | |
1274 | { | |
1275 | len = tab - help; | |
1276 | opt = help; | |
1277 | help = tab + 1; | |
1278 | } | |
1279 | else | |
1280 | { | |
1281 | opt = option->opt_text; | |
1282 | len = strlen (opt); | |
1283 | } | |
1284 | ||
1285 | /* With the -Q option enabled we change the descriptive text associated | |
1286 | with an option to be an indication of its current setting. */ | |
1287 | if (!quiet_flag) | |
1288 | { | |
1289 | if (len < (LEFT_COLUMN + 2)) | |
1290 | strcpy (new_help, "\t\t"); | |
1291 | else | |
1292 | strcpy (new_help, "\t"); | |
1293 | ||
1294 | if (option->flag_var != NULL) | |
1295 | { | |
1296 | if (option->flags & CL_JOINED) | |
1297 | { | |
1298 | if (option->var_type == CLVC_STRING) | |
1299 | { | |
1300 | if (* (const char **) option->flag_var != NULL) | |
1301 | snprintf (new_help + strlen (new_help), | |
1302 | sizeof (new_help) - strlen (new_help), | |
1303 | * (const char **) option->flag_var); | |
1304 | } | |
1305 | else | |
1306 | sprintf (new_help + strlen (new_help), | |
1307 | "%#x", * (int *) option->flag_var); | |
1308 | } | |
1309 | else | |
1310 | strcat (new_help, option_enabled (i) | |
1311 | ? _("[enabled]") : _("[disabled]")); | |
1312 | } | |
1313 | ||
1314 | help = new_help; | |
1315 | } | |
1316 | ||
1317 | wrap_help (help, opt, len, columns); | |
1318 | displayed = true; | |
1319 | } | |
1320 | ||
1321 | if (! found) | |
86895a67 | 1322 | { |
1323 | unsigned int langs = include_flags & CL_LANG_ALL; | |
1324 | ||
1325 | if (langs == 0) | |
1326 | printf (_(" No options with the desired characteristics were found\n")); | |
1327 | else | |
1328 | { | |
1329 | unsigned int i; | |
1330 | ||
1331 | /* PR 31349: Tell the user how to see all of the | |
1332 | options supported by a specific front end. */ | |
1333 | for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
1334 | if ((1U << i) & langs) | |
1335 | printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
1336 | lang_names[i], lang_names[i]); | |
1337 | } | |
48e1416a | 1338 | |
86895a67 | 1339 | } |
87c75316 | 1340 | else if (! displayed) |
1341 | printf (_(" All options with the desired characteristics have already been displayed\n")); | |
1342 | ||
1343 | putchar ('\n'); | |
1344 | } | |
1345 | ||
1346 | /* Display help for a specified type of option. | |
1347 | The options must have ALL of the INCLUDE_FLAGS set | |
1348 | ANY of the flags in the ANY_FLAGS set | |
1349 | and NONE of the EXCLUDE_FLAGS set. */ | |
1350 | static void | |
1351 | print_specific_help (unsigned int include_flags, | |
1352 | unsigned int exclude_flags, | |
1353 | unsigned int any_flags) | |
1354 | { | |
1355 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1356 | const char * description = NULL; | |
1357 | const char * descrip_extra = ""; | |
1358 | size_t i; | |
1359 | unsigned int flag; | |
1360 | static unsigned int columns = 0; | |
1361 | ||
1362 | /* Sanity check: Make sure that we do not have more | |
1363 | languages than we have bits available to enumerate them. */ | |
1364 | gcc_assert ((1U << cl_lang_count) < CL_MIN_OPTION_CLASS); | |
1365 | ||
1366 | /* If we have not done so already, obtain | |
1367 | the desired maximum width of the output. */ | |
1368 | if (columns == 0) | |
1369 | { | |
1370 | const char *p; | |
1371 | ||
1372 | GET_ENVIRONMENT (p, "COLUMNS"); | |
1373 | if (p != NULL) | |
1374 | { | |
1375 | int value = atoi (p); | |
1376 | ||
1377 | if (value > 0) | |
1378 | columns = value; | |
1379 | } | |
1380 | ||
1381 | if (columns == 0) | |
1382 | /* Use a reasonable default. */ | |
1383 | columns = 80; | |
1384 | } | |
1385 | ||
1386 | /* Decide upon the title for the options that we are going to display. */ | |
1387 | for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
1388 | { | |
1389 | switch (flag & include_flags) | |
1390 | { | |
1391 | case 0: | |
1392 | break; | |
1393 | ||
1394 | case CL_TARGET: | |
1395 | description = _("The following options are target specific"); | |
1396 | break; | |
1397 | case CL_WARNING: | |
1398 | description = _("The following options control compiler warning messages"); | |
1399 | break; | |
1400 | case CL_OPTIMIZATION: | |
1401 | description = _("The following options control optimizations"); | |
1402 | break; | |
1403 | case CL_COMMON: | |
1404 | description = _("The following options are language-independent"); | |
1405 | break; | |
1406 | case CL_PARAMS: | |
1407 | description = _("The --param option recognizes the following as parameters"); | |
1408 | break; | |
1409 | default: | |
1410 | if (i >= cl_lang_count) | |
1411 | break; | |
fad6b6bb | 1412 | if (exclude_flags & all_langs_mask) |
d06cb02d | 1413 | description = _("The following options are specific to just the language "); |
87c75316 | 1414 | else |
7fbbfa9f | 1415 | description = _("The following options are supported by the language "); |
86895a67 | 1416 | descrip_extra = lang_names [i]; |
87c75316 | 1417 | break; |
1418 | } | |
1419 | } | |
1420 | ||
1421 | if (description == NULL) | |
1422 | { | |
1423 | if (any_flags == 0) | |
1424 | { | |
fad6b6bb | 1425 | if (include_flags & CL_UNDOCUMENTED) |
87c75316 | 1426 | description = _("The following options are not documented"); |
fad6b6bb | 1427 | else if (include_flags & CL_SEPARATE) |
1428 | description = _("The following options take separate arguments"); | |
1429 | else if (include_flags & CL_JOINED) | |
1430 | description = _("The following options take joined arguments"); | |
87c75316 | 1431 | else |
1432 | { | |
1433 | internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
1434 | include_flags); | |
1435 | return; | |
1436 | } | |
1437 | } | |
1438 | else | |
1439 | { | |
1440 | if (any_flags & all_langs_mask) | |
1441 | description = _("The following options are language-related"); | |
1442 | else | |
1443 | description = _("The following options are language-independent"); | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | printf ("%s%s:\n", description, descrip_extra); | |
1448 | print_filtered_help (include_flags, exclude_flags, any_flags, columns); | |
1449 | } | |
1450 | ||
3272db82 | 1451 | /* Handle target- and language-independent options. Return zero to |
2e9da478 | 1452 | generate an "unknown option" message. Only options that need |
1453 | extra handling need to be listed here; if you simply want | |
1454 | VALUE assigned to a variable, it happens automatically. */ | |
1455 | ||
3272db82 | 1456 | static int |
76f02516 | 1457 | common_handle_option (size_t scode, const char *arg, int value, |
1458 | unsigned int lang_mask) | |
3272db82 | 1459 | { |
86895a67 | 1460 | static bool verbose = false; |
3272db82 | 1461 | enum opt_code code = (enum opt_code) scode; |
1462 | ||
3272db82 | 1463 | switch (code) |
1464 | { | |
da3b1bab | 1465 | case OPT__param: |
1466 | handle_param (arg); | |
1467 | break; | |
1468 | ||
86895a67 | 1469 | case OPT_v: |
1470 | verbose = true; | |
1471 | break; | |
1472 | ||
87c75316 | 1473 | case OPT_fhelp: |
1474 | case OPT__help: | |
1475 | { | |
1476 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1477 | unsigned int undoc_mask; | |
1478 | unsigned int i; | |
1479 | ||
86895a67 | 1480 | undoc_mask = (verbose | extra_warnings) ? 0 : CL_UNDOCUMENTED; |
87c75316 | 1481 | /* First display any single language specific options. */ |
1482 | for (i = 0; i < cl_lang_count; i++) | |
1483 | print_specific_help | |
1484 | (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0); | |
1485 | /* Next display any multi language specific options. */ | |
1486 | print_specific_help (0, undoc_mask, all_langs_mask); | |
1487 | /* Then display any remaining, non-language options. */ | |
1488 | for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
151ef6b4 | 1489 | print_specific_help (i, undoc_mask, 0); |
87c75316 | 1490 | exit_after_options = true; |
1491 | break; | |
1492 | } | |
1493 | ||
1494 | case OPT_ftarget_help: | |
e690b385 | 1495 | case OPT__target_help: |
87c75316 | 1496 | print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0); |
e690b385 | 1497 | exit_after_options = true; |
154ee3b8 | 1498 | |
1499 | /* Allow the target a chance to give the user some additional information. */ | |
1500 | if (targetm.target_help) | |
1501 | targetm.target_help (); | |
e690b385 | 1502 | break; |
1503 | ||
87c75316 | 1504 | case OPT_fhelp_: |
1505 | case OPT__help_: | |
1506 | { | |
1507 | const char * a = arg; | |
1508 | unsigned int include_flags = 0; | |
1509 | /* Note - by default we include undocumented options when listing | |
1510 | specific classes. If you only want to see documented options | |
f0b5f617 | 1511 | then add ",^undocumented" to the --help= option. E.g.: |
87c75316 | 1512 | |
1513 | --help=target,^undocumented */ | |
1514 | unsigned int exclude_flags = 0; | |
1515 | ||
1516 | /* Walk along the argument string, parsing each word in turn. | |
1517 | The format is: | |
1518 | arg = [^]{word}[,{arg}] | |
7fbbfa9f | 1519 | word = {optimizers|target|warnings|undocumented| |
1520 | params|common|<language>} */ | |
87c75316 | 1521 | while (* a != 0) |
1522 | { | |
1523 | static struct | |
1524 | { | |
1525 | const char * string; | |
1526 | unsigned int flag; | |
1527 | } | |
1528 | specifics[] = | |
1529 | { | |
1530 | { "optimizers", CL_OPTIMIZATION }, | |
1531 | { "target", CL_TARGET }, | |
1532 | { "warnings", CL_WARNING }, | |
1533 | { "undocumented", CL_UNDOCUMENTED }, | |
1534 | { "params", CL_PARAMS }, | |
b8048da5 | 1535 | { "joined", CL_JOINED }, |
1536 | { "separate", CL_SEPARATE }, | |
7fbbfa9f | 1537 | { "common", CL_COMMON }, |
87c75316 | 1538 | { NULL, 0 } |
1539 | }; | |
1540 | unsigned int * pflags; | |
3f24af9b | 1541 | const char * comma; |
86895a67 | 1542 | unsigned int lang_flag, specific_flag; |
87c75316 | 1543 | unsigned int len; |
1544 | unsigned int i; | |
1545 | ||
1546 | if (* a == '^') | |
1547 | { | |
1548 | ++ a; | |
1549 | pflags = & exclude_flags; | |
1550 | } | |
1551 | else | |
1552 | pflags = & include_flags; | |
1553 | ||
1554 | comma = strchr (a, ','); | |
1555 | if (comma == NULL) | |
1556 | len = strlen (a); | |
1557 | else | |
1558 | len = comma - a; | |
fad6b6bb | 1559 | if (len == 0) |
1560 | { | |
1561 | a = comma + 1; | |
1562 | continue; | |
1563 | } | |
87c75316 | 1564 | |
86895a67 | 1565 | /* Check to see if the string matches an option class name. */ |
1566 | for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
87c75316 | 1567 | if (strncasecmp (a, specifics[i].string, len) == 0) |
1568 | { | |
86895a67 | 1569 | specific_flag = specifics[i].flag; |
1570 | break; | |
1571 | } | |
fad6b6bb | 1572 | |
86895a67 | 1573 | /* Check to see if the string matches a language name. |
1574 | Note - we rely upon the alpha-sorted nature of the entries in | |
1575 | the lang_names array, specifically that shorter names appear | |
f0b5f617 | 1576 | before their longer variants. (i.e. C before C++). That way |
86895a67 | 1577 | when we are attempting to match --help=c for example we will |
1578 | match with C first and not C++. */ | |
1579 | for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
1580 | if (strncasecmp (a, lang_names[i], len) == 0) | |
1581 | { | |
1582 | lang_flag = 1U << i; | |
87c75316 | 1583 | break; |
1584 | } | |
1585 | ||
86895a67 | 1586 | if (specific_flag != 0) |
87c75316 | 1587 | { |
86895a67 | 1588 | if (lang_flag == 0) |
1589 | * pflags |= specific_flag; | |
1590 | else | |
1591 | { | |
1592 | /* The option's argument matches both the start of a | |
1593 | language name and the start of an option class name. | |
1594 | We have a special case for when the user has | |
1595 | specified "--help=c", but otherwise we have to issue | |
1596 | a warning. */ | |
1597 | if (strncasecmp (a, "c", len) == 0) | |
1598 | * pflags |= lang_flag; | |
1599 | else | |
1600 | fnotice (stderr, | |
1601 | "warning: --help argument %.*s is ambiguous, please be more specific\n", | |
1602 | len, a); | |
1603 | } | |
87c75316 | 1604 | } |
86895a67 | 1605 | else if (lang_flag != 0) |
1606 | * pflags |= lang_flag; | |
1607 | else | |
1608 | fnotice (stderr, | |
1609 | "warning: unrecognized argument to --help= option: %.*s\n", | |
1610 | len, a); | |
87c75316 | 1611 | |
1612 | if (comma == NULL) | |
1613 | break; | |
1614 | a = comma + 1; | |
1615 | } | |
1616 | ||
1617 | if (include_flags) | |
1618 | print_specific_help (include_flags, exclude_flags, 0); | |
1619 | exit_after_options = true; | |
1620 | break; | |
1621 | } | |
1622 | ||
39932bd2 | 1623 | case OPT_fversion: |
e690b385 | 1624 | case OPT__version: |
e690b385 | 1625 | exit_after_options = true; |
1626 | break; | |
1627 | ||
1628 | case OPT_G: | |
837277ab | 1629 | g_switch_value = value; |
e690b385 | 1630 | g_switch_set = true; |
1631 | break; | |
1632 | ||
da3b1bab | 1633 | case OPT_O: |
1634 | case OPT_Os: | |
1635 | /* Currently handled in a prescan. */ | |
1636 | break; | |
1637 | ||
76f02516 | 1638 | case OPT_Werror_: |
3ba510aa | 1639 | enable_warning_as_error (arg, value, lang_mask); |
76f02516 | 1640 | break; |
1641 | ||
6f2f567f | 1642 | case OPT_Wlarger_than_: |
48e1416a | 1643 | /* This form corresponds to -Wlarger-than-. |
1644 | Kept for backward compatibility. | |
17c66687 | 1645 | Don't use it as the first argument of warning(). */ |
1646 | ||
1647 | case OPT_Wlarger_than_eq: | |
6f2f567f | 1648 | larger_than_size = value; |
1649 | warn_larger_than = value != -1; | |
1650 | break; | |
1651 | ||
6fdade09 | 1652 | case OPT_Wframe_larger_than_: |
1653 | frame_larger_than_size = value; | |
1654 | warn_frame_larger_than = value != -1; | |
1655 | break; | |
1656 | ||
6f2f567f | 1657 | case OPT_Wstrict_aliasing: |
e6fa0ea6 | 1658 | set_Wstrict_aliasing (value); |
1659 | break; | |
1660 | ||
c1628b55 | 1661 | case OPT_Wstrict_aliasing_: |
6f2f567f | 1662 | warn_strict_aliasing = value; |
1663 | break; | |
1664 | ||
add6ee5e | 1665 | case OPT_Wstrict_overflow: |
47fcc258 | 1666 | warn_strict_overflow = (value |
1667 | ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
1668 | : 0); | |
1669 | break; | |
1670 | ||
add6ee5e | 1671 | case OPT_Wstrict_overflow_: |
1672 | warn_strict_overflow = value; | |
1673 | break; | |
1674 | ||
da3b1bab | 1675 | case OPT_Wunused: |
278e3a1f | 1676 | warn_unused = value; |
da3b1bab | 1677 | break; |
1678 | ||
e690b385 | 1679 | case OPT_aux_info: |
1680 | case OPT_aux_info_: | |
1681 | aux_info_file_name = arg; | |
1682 | flag_gen_aux_info = 1; | |
1683 | break; | |
1684 | ||
1685 | case OPT_auxbase: | |
1686 | aux_base_name = arg; | |
1687 | break; | |
1688 | ||
1689 | case OPT_auxbase_strip: | |
1690 | { | |
1691 | char *tmp = xstrdup (arg); | |
1692 | strip_off_ending (tmp, strlen (tmp)); | |
1693 | if (tmp[0]) | |
1694 | aux_base_name = tmp; | |
1695 | } | |
1696 | break; | |
1697 | ||
1698 | case OPT_d: | |
1699 | decode_d_option (arg); | |
1700 | break; | |
1701 | ||
1702 | case OPT_dumpbase: | |
1703 | dump_base_name = arg; | |
1704 | break; | |
1705 | ||
299dd221 | 1706 | case OPT_falign_functions_: |
1707 | align_functions = value; | |
1708 | break; | |
1709 | ||
299dd221 | 1710 | case OPT_falign_jumps_: |
1711 | align_jumps = value; | |
1712 | break; | |
1713 | ||
299dd221 | 1714 | case OPT_falign_labels_: |
1715 | align_labels = value; | |
1716 | break; | |
1717 | ||
299dd221 | 1718 | case OPT_falign_loops_: |
1719 | align_loops = value; | |
1720 | break; | |
1721 | ||
ecdb6d1a | 1722 | case OPT_fbranch_probabilities: |
7dea76ba | 1723 | flag_branch_probabilities_set = true; |
08d163a9 | 1724 | break; |
1725 | ||
941a4893 | 1726 | case OPT_fcall_used_: |
1727 | fix_register (arg, 0, 1); | |
1728 | break; | |
1729 | ||
1730 | case OPT_fcall_saved_: | |
1731 | fix_register (arg, 0, 0); | |
1732 | break; | |
3072d30e | 1733 | |
1734 | case OPT_fdbg_cnt_: | |
1735 | dbg_cnt_process_opt (arg); | |
1736 | break; | |
d2153a46 | 1737 | |
1738 | case OPT_fdbg_cnt_list: | |
1739 | dbg_cnt_list_all_counters (); | |
1740 | break; | |
941a4893 | 1741 | |
5f1f2de5 | 1742 | case OPT_fdebug_prefix_map_: |
1743 | add_debug_prefix_map (arg); | |
1744 | break; | |
1745 | ||
1e06725a | 1746 | case OPT_fdiagnostics_show_location_: |
1747 | if (!strcmp (arg, "once")) | |
1748 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
1749 | else if (!strcmp (arg, "every-line")) | |
1750 | diagnostic_prefixing_rule (global_dc) | |
1751 | = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
1752 | else | |
1753 | return 0; | |
1754 | break; | |
1755 | ||
b0932b2f | 1756 | case OPT_fdiagnostics_show_option: |
1757 | global_dc->show_option_requested = true; | |
1758 | break; | |
1759 | ||
4ee9c684 | 1760 | case OPT_fdump_: |
1761 | if (!dump_switch_p (arg)) | |
1762 | return 0; | |
1763 | break; | |
1764 | ||
c6418a4e | 1765 | case OPT_fexcess_precision_: |
1766 | if (!strcmp (arg, "fast")) | |
1767 | flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; | |
1768 | else if (!strcmp (arg, "standard")) | |
1769 | flag_excess_precision_cmdline = EXCESS_PRECISION_STANDARD; | |
1770 | else | |
1771 | error ("unknown excess precision style \"%s\"", arg); | |
1772 | break; | |
1773 | ||
941a4893 | 1774 | case OPT_ffast_math: |
1775 | set_fast_math_flags (value); | |
1776 | break; | |
1777 | ||
49d060d7 | 1778 | case OPT_funsafe_math_optimizations: |
1779 | set_unsafe_math_optimizations_flags (value); | |
1780 | break; | |
1781 | ||
941a4893 | 1782 | case OPT_ffixed_: |
1783 | fix_register (arg, 1, 1); | |
1784 | break; | |
1785 | ||
39470ac3 | 1786 | case OPT_finline_limit_: |
1787 | case OPT_finline_limit_eq: | |
39470ac3 | 1788 | set_param_value ("max-inline-insns-single", value / 2); |
1789 | set_param_value ("max-inline-insns-auto", value / 2); | |
39470ac3 | 1790 | break; |
1791 | ||
a95c0776 | 1792 | case OPT_finstrument_functions_exclude_function_list_: |
b5f30e7c | 1793 | add_comma_separated_to_vector |
a95c0776 | 1794 | (&flag_instrument_functions_exclude_functions, arg); |
1795 | break; | |
1796 | ||
1797 | case OPT_finstrument_functions_exclude_file_list_: | |
b5f30e7c | 1798 | add_comma_separated_to_vector |
a95c0776 | 1799 | (&flag_instrument_functions_exclude_files, arg); |
1800 | break; | |
1801 | ||
1e06725a | 1802 | case OPT_fmessage_length_: |
aa6db498 | 1803 | pp_set_line_maximum_length (global_dc->printer, value); |
1e06725a | 1804 | break; |
1805 | ||
6b5553e5 | 1806 | case OPT_fpack_struct_: |
1807 | if (value <= 0 || (value & (value - 1)) || value > 16) | |
87c75316 | 1808 | error ("structure alignment must be a small power of two, not %d", value); |
6b5553e5 | 1809 | else |
1810 | { | |
1811 | initial_max_fld_align = value; | |
1812 | maximum_field_alignment = value * BITS_PER_UNIT; | |
1813 | } | |
1814 | break; | |
1815 | ||
1e06725a | 1816 | case OPT_fpeel_loops: |
7dea76ba | 1817 | flag_peel_loops_set = true; |
ecdb6d1a | 1818 | break; |
1819 | ||
9227b6fc | 1820 | case OPT_fplugin_: |
1821 | #ifdef ENABLE_PLUGIN | |
1822 | add_new_plugin (arg); | |
1823 | #else | |
1824 | error ("Plugin support is disabled. Configure with --enable-plugin."); | |
1825 | #endif | |
1826 | break; | |
1827 | ||
1828 | case OPT_fplugin_arg_: | |
1829 | #ifdef ENABLE_PLUGIN | |
1830 | parse_plugin_arg_opt (arg); | |
1831 | #else | |
1832 | error ("Plugin support is disabled. Configure with --enable-plugin."); | |
1833 | #endif | |
1834 | break; | |
1835 | ||
ecdb6d1a | 1836 | case OPT_fprofile_arcs: |
7dea76ba | 1837 | profile_arc_flag_set = true; |
ecdb6d1a | 1838 | break; |
1839 | ||
b97510b2 | 1840 | case OPT_finline_functions: |
1841 | flag_inline_functions_set = true; | |
1842 | break; | |
1843 | ||
3e3a0e9c | 1844 | case OPT_fprofile_dir_: |
1845 | profile_data_prefix = xstrdup (arg); | |
1846 | break; | |
1847 | ||
1848 | case OPT_fprofile_use_: | |
1849 | profile_data_prefix = xstrdup (arg); | |
1850 | flag_profile_use = true; | |
1851 | value = true; | |
1852 | /* No break here - do -fprofile-use processing. */ | |
7dea76ba | 1853 | case OPT_fprofile_use: |
1854 | if (!flag_branch_probabilities_set) | |
1855 | flag_branch_probabilities = value; | |
1856 | if (!flag_profile_values_set) | |
1857 | flag_profile_values = value; | |
1858 | if (!flag_unroll_loops_set) | |
1859 | flag_unroll_loops = value; | |
1860 | if (!flag_peel_loops_set) | |
1861 | flag_peel_loops = value; | |
1862 | if (!flag_tracer_set) | |
1863 | flag_tracer = value; | |
1864 | if (!flag_value_profile_transformations_set) | |
1865 | flag_value_profile_transformations = value; | |
b97510b2 | 1866 | if (!flag_inline_functions_set) |
1867 | flag_inline_functions = value; | |
11b73810 | 1868 | if (!flag_ipa_cp_set) |
1869 | flag_ipa_cp = value; | |
1870 | if (!flag_ipa_cp_clone_set | |
1871 | && value && flag_ipa_cp) | |
1872 | flag_ipa_cp_clone = value; | |
7baffbd3 | 1873 | if (!flag_predictive_commoning_set) |
1874 | flag_predictive_commoning = value; | |
1875 | if (!flag_unswitch_loops_set) | |
1876 | flag_unswitch_loops = value; | |
1877 | if (!flag_gcse_after_reload_set) | |
1878 | flag_gcse_after_reload = value; | |
7dea76ba | 1879 | break; |
1880 | ||
3e3a0e9c | 1881 | case OPT_fprofile_generate_: |
1882 | profile_data_prefix = xstrdup (arg); | |
1883 | value = true; | |
1884 | /* No break here - do -fprofile-generate processing. */ | |
7dea76ba | 1885 | case OPT_fprofile_generate: |
1886 | if (!profile_arc_flag_set) | |
1887 | profile_arc_flag = value; | |
1888 | if (!flag_profile_values_set) | |
1889 | flag_profile_values = value; | |
1890 | if (!flag_value_profile_transformations_set) | |
1891 | flag_value_profile_transformations = value; | |
92ffbdd1 | 1892 | if (!flag_inline_functions_set) |
1893 | flag_inline_functions = value; | |
7dea76ba | 1894 | break; |
1895 | ||
1c6a7b8c | 1896 | case OPT_fprofile_values: |
7dea76ba | 1897 | flag_profile_values_set = true; |
1c6a7b8c | 1898 | break; |
1899 | ||
b212f378 | 1900 | case OPT_fvisibility_: |
1901 | { | |
1902 | if (!strcmp(arg, "default")) | |
1903 | default_visibility = VISIBILITY_DEFAULT; | |
1904 | else if (!strcmp(arg, "internal")) | |
1905 | default_visibility = VISIBILITY_INTERNAL; | |
1906 | else if (!strcmp(arg, "hidden")) | |
1907 | default_visibility = VISIBILITY_HIDDEN; | |
1908 | else if (!strcmp(arg, "protected")) | |
1909 | default_visibility = VISIBILITY_PROTECTED; | |
1910 | else | |
4133d091 | 1911 | error ("unrecognized visibility value \"%s\"", arg); |
b212f378 | 1912 | } |
1913 | break; | |
1914 | ||
1c6a7b8c | 1915 | case OPT_fvpt: |
8a5df2ce | 1916 | flag_value_profile_transformations_set = true; |
1917 | break; | |
1918 | ||
1e06725a | 1919 | case OPT_frandom_seed: |
1920 | /* The real switch is -fno-random-seed. */ | |
1921 | if (value) | |
1922 | return 0; | |
b6c1bd72 | 1923 | set_random_seed (NULL); |
1e06725a | 1924 | break; |
1925 | ||
1926 | case OPT_frandom_seed_: | |
b6c1bd72 | 1927 | set_random_seed (arg); |
1e06725a | 1928 | break; |
1929 | ||
e1ab7874 | 1930 | case OPT_fselective_scheduling: |
1931 | case OPT_fselective_scheduling2: | |
1932 | sel_sched_switch_set = true; | |
1933 | break; | |
1934 | ||
1e06725a | 1935 | case OPT_fsched_verbose_: |
1936 | #ifdef INSN_SCHEDULING | |
1937 | fix_sched_param ("verbose", arg); | |
1938 | break; | |
1939 | #else | |
1940 | return 0; | |
1941 | #endif | |
1942 | ||
52c4b43f | 1943 | case OPT_fsched_stalled_insns_: |
1944 | flag_sched_stalled_insns = value; | |
1945 | if (flag_sched_stalled_insns == 0) | |
1946 | flag_sched_stalled_insns = -1; | |
1947 | break; | |
1948 | ||
52c4b43f | 1949 | case OPT_fsched_stalled_insns_dep_: |
1950 | flag_sched_stalled_insns_dep = value; | |
1951 | break; | |
ecdb6d1a | 1952 | |
4852b829 | 1953 | case OPT_fstack_check_: |
1954 | if (!strcmp (arg, "no")) | |
1955 | flag_stack_check = NO_STACK_CHECK; | |
1956 | else if (!strcmp (arg, "generic")) | |
1957 | /* This is the old stack checking method. */ | |
1958 | flag_stack_check = STACK_CHECK_BUILTIN | |
1959 | ? FULL_BUILTIN_STACK_CHECK | |
1960 | : GENERIC_STACK_CHECK; | |
1961 | else if (!strcmp (arg, "specific")) | |
1962 | /* This is the new stack checking method. */ | |
1963 | flag_stack_check = STACK_CHECK_BUILTIN | |
1964 | ? FULL_BUILTIN_STACK_CHECK | |
1965 | : STACK_CHECK_STATIC_BUILTIN | |
1966 | ? STATIC_BUILTIN_STACK_CHECK | |
1967 | : GENERIC_STACK_CHECK; | |
1968 | else | |
1969 | warning (0, "unknown stack check parameter \"%s\"", arg); | |
1970 | break; | |
1971 | ||
1972 | case OPT_fstack_check: | |
1973 | /* This is the same as the "specific" mode above. */ | |
1974 | if (value) | |
1975 | flag_stack_check = STACK_CHECK_BUILTIN | |
1976 | ? FULL_BUILTIN_STACK_CHECK | |
1977 | : STACK_CHECK_STATIC_BUILTIN | |
1978 | ? STATIC_BUILTIN_STACK_CHECK | |
1979 | : GENERIC_STACK_CHECK; | |
1980 | else | |
1981 | flag_stack_check = NO_STACK_CHECK; | |
1982 | break; | |
1983 | ||
1e06725a | 1984 | case OPT_fstack_limit: |
1985 | /* The real switch is -fno-stack-limit. */ | |
1986 | if (value) | |
1987 | return 0; | |
1988 | stack_limit_rtx = NULL_RTX; | |
1989 | break; | |
1990 | ||
941a4893 | 1991 | case OPT_fstack_limit_register_: |
1992 | { | |
1993 | int reg = decode_reg_name (arg); | |
1994 | if (reg < 0) | |
1995 | error ("unrecognized register name \"%s\"", arg); | |
1996 | else | |
1997 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
1998 | } | |
1999 | break; | |
2000 | ||
2001 | case OPT_fstack_limit_symbol_: | |
2002 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (arg)); | |
2003 | break; | |
2004 | ||
459e8543 | 2005 | case OPT_ftree_vectorizer_verbose_: |
2006 | vect_set_verbosity_level (arg); | |
2007 | break; | |
2008 | ||
941a4893 | 2009 | case OPT_ftls_model_: |
2010 | if (!strcmp (arg, "global-dynamic")) | |
2011 | flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
2012 | else if (!strcmp (arg, "local-dynamic")) | |
2013 | flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
2014 | else if (!strcmp (arg, "initial-exec")) | |
2015 | flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
2016 | else if (!strcmp (arg, "local-exec")) | |
2017 | flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
2018 | else | |
c3ceba8e | 2019 | warning (0, "unknown tls-model \"%s\"", arg); |
941a4893 | 2020 | break; |
2021 | ||
47dd2e78 | 2022 | case OPT_fira_algorithm_: |
14792f4e | 2023 | if (!strcmp (arg, "CB")) |
47dd2e78 | 2024 | flag_ira_algorithm = IRA_ALGORITHM_CB; |
14792f4e | 2025 | else if (!strcmp (arg, "priority")) |
2026 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
47dd2e78 | 2027 | else |
2028 | warning (0, "unknown ira algorithm \"%s\"", arg); | |
2029 | break; | |
2030 | ||
14792f4e | 2031 | case OPT_fira_region_: |
2032 | if (!strcmp (arg, "one")) | |
2033 | flag_ira_region = IRA_REGION_ONE; | |
2034 | else if (!strcmp (arg, "all")) | |
2035 | flag_ira_region = IRA_REGION_ALL; | |
2036 | else if (!strcmp (arg, "mixed")) | |
2037 | flag_ira_region = IRA_REGION_MIXED; | |
2038 | else | |
2039 | warning (0, "unknown ira region \"%s\"", arg); | |
2040 | break; | |
2041 | ||
47dd2e78 | 2042 | case OPT_fira_verbose_: |
2043 | flag_ira_verbose = value; | |
2044 | break; | |
2045 | ||
1e06725a | 2046 | case OPT_ftracer: |
7dea76ba | 2047 | flag_tracer_set = true; |
4ee9c684 | 2048 | break; |
2049 | ||
11b73810 | 2050 | case OPT_fipa_cp: |
2051 | flag_ipa_cp_set = true; | |
2052 | break; | |
2053 | ||
2054 | case OPT_fipa_cp_clone: | |
2055 | flag_ipa_cp_clone_set = true; | |
2056 | break; | |
2057 | ||
7baffbd3 | 2058 | case OPT_fpredictive_commoning: |
2059 | flag_predictive_commoning_set = true; | |
2060 | break; | |
2061 | ||
2062 | case OPT_funswitch_loops: | |
2063 | flag_unswitch_loops_set = true; | |
2064 | break; | |
2065 | ||
2066 | case OPT_fgcse_after_reload: | |
2067 | flag_gcse_after_reload_set = true; | |
2068 | break; | |
2069 | ||
1e06725a | 2070 | case OPT_funroll_loops: |
7dea76ba | 2071 | flag_unroll_loops_set = true; |
ecdb6d1a | 2072 | break; |
2073 | ||
6f2f567f | 2074 | case OPT_g: |
b0e56fb1 | 2075 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg); |
2076 | break; | |
2077 | ||
2078 | case OPT_gcoff: | |
2079 | set_debug_level (SDB_DEBUG, false, arg); | |
2080 | break; | |
2081 | ||
3d3b9d5b | 2082 | case OPT_gdwarf_: |
9845d120 | 2083 | if (value < 2 || value > 4) |
3d3b9d5b | 2084 | error ("dwarf version %d is not supported", value); |
2085 | else | |
2086 | dwarf_version = value; | |
2087 | set_debug_level (DWARF2_DEBUG, false, ""); | |
b0e56fb1 | 2088 | break; |
2089 | ||
2090 | case OPT_ggdb: | |
2091 | set_debug_level (NO_DEBUG, 2, arg); | |
2092 | break; | |
2093 | ||
2094 | case OPT_gstabs: | |
2095 | case OPT_gstabs_: | |
2096 | set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg); | |
2097 | break; | |
2098 | ||
2099 | case OPT_gvms: | |
2100 | set_debug_level (VMS_DEBUG, false, arg); | |
2101 | break; | |
2102 | ||
2103 | case OPT_gxcoff: | |
2104 | case OPT_gxcoff_: | |
2105 | set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg); | |
6f2f567f | 2106 | break; |
2107 | ||
e690b385 | 2108 | case OPT_o: |
2109 | asm_file_name = arg; | |
2110 | break; | |
2111 | ||
e690b385 | 2112 | case OPT_pedantic_errors: |
2113 | flag_pedantic_errors = pedantic = 1; | |
2114 | break; | |
2115 | ||
1bc99153 | 2116 | case OPT_fsee: |
b500432f | 2117 | case OPT_fcse_skip_blocks: |
4f87b914 | 2118 | case OPT_floop_optimize: |
2119 | case OPT_frerun_loop_opt: | |
2120 | case OPT_fstrength_reduce: | |
578ef723 | 2121 | case OPT_ftree_store_copy_prop: |
b6863793 | 2122 | case OPT_fforce_addr: |
70393469 | 2123 | case OPT_ftree_salias: |
5c94d20f | 2124 | case OPT_ftree_store_ccp: |
334ec2d8 | 2125 | /* These are no-ops, preserved for backward compatibility. */ |
4f87b914 | 2126 | break; |
2127 | ||
386fbe6a | 2128 | case OPT_fuse_linker_plugin: |
2129 | /* No-op. Used by the driver and passed to us because it starts with f.*/ | |
2130 | break; | |
2131 | ||
2e9da478 | 2132 | default: |
2133 | /* If the flag was handled in a standard way, assume the lack of | |
2134 | processing here is intentional. */ | |
1fa3a8f6 | 2135 | gcc_assert (cl_options[scode].flag_var); |
2136 | break; | |
3272db82 | 2137 | } |
2138 | ||
2139 | return 1; | |
2140 | } | |
da3b1bab | 2141 | |
2142 | /* Handle --param NAME=VALUE. */ | |
2143 | static void | |
2144 | handle_param (const char *carg) | |
2145 | { | |
2146 | char *equal, *arg; | |
2147 | int value; | |
2148 | ||
2149 | arg = xstrdup (carg); | |
2150 | equal = strchr (arg, '='); | |
2151 | if (!equal) | |
2152 | error ("%s: --param arguments should be of the form NAME=VALUE", arg); | |
2153 | else | |
2154 | { | |
2155 | value = integral_argument (equal + 1); | |
2156 | if (value == -1) | |
1e5fcbe2 | 2157 | error ("invalid --param value %qs", equal + 1); |
da3b1bab | 2158 | else |
2159 | { | |
2160 | *equal = '\0'; | |
2161 | set_param_value (arg, value); | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | free (arg); | |
2166 | } | |
2167 | ||
48e1416a | 2168 | /* Used to set the level of strict aliasing warnings, |
e6fa0ea6 | 2169 | when no level is specified (i.e., when -Wstrict-aliasing, and not |
2170 | -Wstrict-aliasing=level was given). | |
2171 | ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
2172 | and 0 otherwise. After calling this function, wstrict_aliasing will be | |
2173 | set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
2174 | void | |
2175 | set_Wstrict_aliasing (int onoff) | |
2176 | { | |
2177 | gcc_assert (onoff == 0 || onoff == 1); | |
2178 | if (onoff != 0) | |
2179 | warn_strict_aliasing = 3; | |
e629070d | 2180 | else |
2181 | warn_strict_aliasing = 0; | |
e6fa0ea6 | 2182 | } |
2183 | ||
941a4893 | 2184 | /* The following routines are useful in setting all the flags that |
2185 | -ffast-math and -fno-fast-math imply. */ | |
2186 | void | |
2187 | set_fast_math_flags (int set) | |
2188 | { | |
941a4893 | 2189 | flag_unsafe_math_optimizations = set; |
4a2a1c11 | 2190 | set_unsafe_math_optimizations_flags (set); |
941a4893 | 2191 | flag_finite_math_only = set; |
2192 | flag_errno_math = !set; | |
2193 | if (set) | |
5466f589 | 2194 | { |
2195 | flag_signaling_nans = 0; | |
2196 | flag_rounding_math = 0; | |
45b9d334 | 2197 | flag_cx_limited_range = 1; |
5466f589 | 2198 | } |
941a4893 | 2199 | } |
2200 | ||
48e1416a | 2201 | /* When -funsafe-math-optimizations is set the following |
2202 | flags are set as well. */ | |
49d060d7 | 2203 | void |
2204 | set_unsafe_math_optimizations_flags (int set) | |
2205 | { | |
4a2a1c11 | 2206 | flag_trapping_math = !set; |
2207 | flag_signed_zeros = !set; | |
49d060d7 | 2208 | flag_associative_math = set; |
4a2a1c11 | 2209 | flag_reciprocal_math = set; |
49d060d7 | 2210 | } |
2211 | ||
941a4893 | 2212 | /* Return true iff flags are set as if -ffast-math. */ |
2213 | bool | |
2214 | fast_math_flags_set_p (void) | |
2215 | { | |
2216 | return (!flag_trapping_math | |
2217 | && flag_unsafe_math_optimizations | |
2218 | && flag_finite_math_only | |
893038cd | 2219 | && !flag_signed_zeros |
941a4893 | 2220 | && !flag_errno_math); |
2221 | } | |
53b8e5c1 | 2222 | |
46f8e3b0 | 2223 | /* Return true iff flags are set as if -ffast-math but using the flags stored |
2224 | in the struct cl_optimization structure. */ | |
2225 | bool | |
2226 | fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
2227 | { | |
2228 | return (!opt->flag_trapping_math | |
2229 | && opt->flag_unsafe_math_optimizations | |
2230 | && opt->flag_finite_math_only | |
2231 | && !opt->flag_signed_zeros | |
2232 | && !opt->flag_errno_math); | |
2233 | } | |
2234 | ||
b0e56fb1 | 2235 | /* Handle a debug output -g switch. EXTENDED is true or false to support |
2236 | extended output (2 is special and means "-ggdb" was given). */ | |
2237 | static void | |
2238 | set_debug_level (enum debug_info_type type, int extended, const char *arg) | |
2239 | { | |
2240 | static bool type_explicit; | |
2241 | ||
2242 | use_gnu_debug_info_extensions = extended; | |
2243 | ||
2244 | if (type == NO_DEBUG) | |
2245 | { | |
2246 | if (write_symbols == NO_DEBUG) | |
2247 | { | |
2248 | write_symbols = PREFERRED_DEBUGGING_TYPE; | |
2249 | ||
2250 | if (extended == 2) | |
2251 | { | |
2252 | #ifdef DWARF2_DEBUGGING_INFO | |
2253 | write_symbols = DWARF2_DEBUG; | |
2254 | #elif defined DBX_DEBUGGING_INFO | |
2255 | write_symbols = DBX_DEBUG; | |
2256 | #endif | |
2257 | } | |
2258 | ||
2259 | if (write_symbols == NO_DEBUG) | |
c3ceba8e | 2260 | warning (0, "target system does not support debug output"); |
b0e56fb1 | 2261 | } |
2262 | } | |
2263 | else | |
2264 | { | |
2265 | /* Does it conflict with an already selected type? */ | |
2266 | if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols) | |
2267 | error ("debug format \"%s\" conflicts with prior selection", | |
2268 | debug_type_names[type]); | |
2269 | write_symbols = type; | |
2270 | type_explicit = true; | |
2271 | } | |
2272 | ||
2273 | /* A debug flag without a level defaults to level 2. */ | |
2274 | if (*arg == '\0') | |
2275 | { | |
2276 | if (!debug_info_level) | |
8458f4ca | 2277 | debug_info_level = DINFO_LEVEL_NORMAL; |
b0e56fb1 | 2278 | } |
2279 | else | |
2280 | { | |
8458f4ca | 2281 | int argval = integral_argument (arg); |
2282 | if (argval == -1) | |
b0e56fb1 | 2283 | error ("unrecognised debug output level \"%s\"", arg); |
8458f4ca | 2284 | else if (argval > 3) |
b0e56fb1 | 2285 | error ("debug output level %s is too high", arg); |
8458f4ca | 2286 | else |
2287 | debug_info_level = (enum debug_info_level) argval; | |
b0e56fb1 | 2288 | } |
2289 | } | |
2290 | ||
ff05e09e | 2291 | /* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't |
2292 | a simple on-off switch. */ | |
2293 | ||
2294 | int | |
efb9d9ee | 2295 | option_enabled (int opt_idx) |
ff05e09e | 2296 | { |
efb9d9ee | 2297 | const struct cl_option *option = &(cl_options[opt_idx]); |
87c75316 | 2298 | |
ff05e09e | 2299 | if (option->flag_var) |
0fe44c73 | 2300 | switch (option->var_type) |
ff05e09e | 2301 | { |
2302 | case CLVC_BOOLEAN: | |
0fe44c73 | 2303 | return *(int *) option->flag_var != 0; |
ff05e09e | 2304 | |
2305 | case CLVC_EQUAL: | |
0fe44c73 | 2306 | return *(int *) option->flag_var == option->var_value; |
ff05e09e | 2307 | |
2308 | case CLVC_BIT_CLEAR: | |
0fe44c73 | 2309 | return (*(int *) option->flag_var & option->var_value) == 0; |
ff05e09e | 2310 | |
2311 | case CLVC_BIT_SET: | |
0fe44c73 | 2312 | return (*(int *) option->flag_var & option->var_value) != 0; |
2313 | ||
2314 | case CLVC_STRING: | |
2315 | break; | |
ff05e09e | 2316 | } |
2317 | return -1; | |
2318 | } | |
7abcc497 | 2319 | |
2320 | /* Fill STATE with the current state of option OPTION. Return true if | |
2321 | there is some state to store. */ | |
2322 | ||
2323 | bool | |
2324 | get_option_state (int option, struct cl_option_state *state) | |
2325 | { | |
2326 | if (cl_options[option].flag_var == 0) | |
2327 | return false; | |
2328 | ||
2329 | switch (cl_options[option].var_type) | |
2330 | { | |
2331 | case CLVC_BOOLEAN: | |
2332 | case CLVC_EQUAL: | |
2333 | state->data = cl_options[option].flag_var; | |
2334 | state->size = sizeof (int); | |
2335 | break; | |
2336 | ||
2337 | case CLVC_BIT_CLEAR: | |
2338 | case CLVC_BIT_SET: | |
2339 | state->ch = option_enabled (option); | |
2340 | state->data = &state->ch; | |
2341 | state->size = 1; | |
2342 | break; | |
2343 | ||
2344 | case CLVC_STRING: | |
2345 | state->data = *(const char **) cl_options[option].flag_var; | |
2346 | if (state->data == 0) | |
2347 | state->data = ""; | |
4077bf7a | 2348 | state->size = strlen ((const char *) state->data) + 1; |
7abcc497 | 2349 | break; |
2350 | } | |
2351 | return true; | |
2352 | } | |
3ba510aa | 2353 | |
b7f7149b | 2354 | /* Set *OPTION according to VALUE and ARG. */ |
2355 | ||
2356 | void | |
2357 | set_option (const struct cl_option *option, int value, const char *arg) | |
2358 | { | |
2359 | if (!option->flag_var) | |
2360 | return; | |
2361 | ||
2362 | switch (option->var_type) | |
2363 | { | |
2364 | case CLVC_BOOLEAN: | |
2365 | *(int *) option->flag_var = value; | |
2366 | break; | |
2367 | ||
2368 | case CLVC_EQUAL: | |
2369 | *(int *) option->flag_var = (value | |
2370 | ? option->var_value | |
2371 | : !option->var_value); | |
2372 | break; | |
2373 | ||
2374 | case CLVC_BIT_CLEAR: | |
2375 | case CLVC_BIT_SET: | |
2376 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) | |
2377 | *(int *) option->flag_var |= option->var_value; | |
2378 | else | |
2379 | *(int *) option->flag_var &= ~option->var_value; | |
2380 | if (option->flag_var == &target_flags) | |
2381 | target_flags_explicit |= option->var_value; | |
2382 | break; | |
2383 | ||
2384 | case CLVC_STRING: | |
2385 | *(const char **) option->flag_var = arg; | |
2386 | break; | |
2387 | } | |
2388 | } | |
2389 | ||
3ba510aa | 2390 | /* Enable a warning option as an error. This is used by -Werror= and |
2391 | also by legacy Werror-implicit-function-declaration. */ | |
2392 | ||
2393 | void | |
2394 | enable_warning_as_error (const char *arg, int value, unsigned int lang_mask) | |
2395 | { | |
2396 | char *new_option; | |
2397 | int option_index; | |
2398 | ||
2399 | new_option = XNEWVEC (char, strlen (arg) + 2); | |
2400 | new_option[0] = 'W'; | |
2401 | strcpy (new_option + 1, arg); | |
2402 | option_index = find_opt (new_option, lang_mask); | |
2403 | if (option_index == N_OPTS) | |
2404 | { | |
2405 | error ("-Werror=%s: No option -%s", arg, new_option); | |
2406 | } | |
2407 | else | |
2408 | { | |
b9c74b4d | 2409 | diagnostic_t kind = value ? DK_ERROR : DK_WARNING; |
3ba510aa | 2410 | diagnostic_classify_diagnostic (global_dc, option_index, kind); |
48e1416a | 2411 | |
3ba510aa | 2412 | /* -Werror=foo implies -Wfoo. */ |
2413 | if (cl_options[option_index].var_type == CLVC_BOOLEAN | |
2414 | && cl_options[option_index].flag_var | |
2415 | && kind == DK_ERROR) | |
2416 | *(int *) cl_options[option_index].flag_var = 1; | |
2417 | } | |
2418 | free (new_option); | |
2419 | } |