Mercurial > hg > CbC > CbC_gcc
annotate gcc/opts.c @ 63:b7f97abdc517 gcc-4.6-20100522
update gcc from gcc-4.5.0 to gcc-4.6
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
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date | Mon, 24 May 2010 12:47:05 +0900 |
parents | 77e2b8dfacca |
children | f6334be47118 |
rev | line source |
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0 | 1 /* Command line option handling. |
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2 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
0 | 3 Free Software Foundation, Inc. |
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 | |
10 Software Foundation; either version 3, or (at your option) any later | |
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 | |
19 along with GCC; see the file COPYING3. If not see | |
20 <http://www.gnu.org/licenses/>. */ | |
21 | |
22 #include "config.h" | |
23 #include "system.h" | |
24 #include "intl.h" | |
25 #include "coretypes.h" | |
26 #include "tm.h" | |
27 #include "tree.h" | |
28 #include "rtl.h" | |
29 #include "expr.h" | |
30 #include "ggc.h" | |
31 #include "output.h" | |
32 #include "langhooks.h" | |
33 #include "opts.h" | |
34 #include "options.h" | |
35 #include "flags.h" | |
36 #include "toplev.h" | |
37 #include "params.h" | |
38 #include "diagnostic.h" | |
39 #include "tm_p.h" /* For OPTIMIZATION_OPTIONS. */ | |
40 #include "insn-attr.h" /* For INSN_SCHEDULING. */ | |
41 #include "target.h" | |
42 #include "tree-pass.h" | |
43 #include "dbgcnt.h" | |
44 #include "debug.h" | |
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45 #include "plugin.h" |
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46 #include "except.h" |
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47 #include "lto-streamer.h" |
0 | 48 |
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 | |
53 /* Same for selective scheduling. */ | |
54 bool sel_sched_switch_set; | |
55 | |
56 /* True if we should exit after parsing options. */ | |
57 bool exit_after_options; | |
58 | |
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 | |
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 | |
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 | |
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 | |
93 of the current compilation unit. This matching emits minimal | |
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 | |
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 | |
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 | |
340 /* What to print when a switch has no documentation. */ | |
341 static const char undocumented_msg[] = N_("This switch lacks documentation"); | |
342 | |
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; | |
349 static bool flag_inline_functions_set, flag_ipa_cp_set, flag_ipa_cp_clone_set; | |
350 static bool flag_predictive_commoning_set, flag_unswitch_loops_set, flag_gcse_after_reload_set; | |
351 | |
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 | |
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 | |
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367 /* Language specific warning pass for unused results. */ |
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368 bool flag_warn_unused_result = false; |
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369 |
0 | 370 /* Input file names. */ |
371 const char **in_fnames; | |
372 unsigned num_in_fnames; | |
373 | |
374 static int common_handle_option (size_t scode, const char *arg, int value, | |
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375 unsigned int lang_mask, int kind); |
0 | 376 static void handle_param (const char *); |
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); | |
380 static void set_debug_level (enum debug_info_type type, int extended, | |
381 const char *arg); | |
382 | |
383 /* If ARG is a non-negative integer made up solely of digits, return its | |
384 value, otherwise return -1. */ | |
385 static int | |
386 integral_argument (const char *arg) | |
387 { | |
388 const char *p = arg; | |
389 | |
390 while (*p && ISDIGIT (*p)) | |
391 p++; | |
392 | |
393 if (*p == '\0') | |
394 return atoi (arg); | |
395 | |
396 return -1; | |
397 } | |
398 | |
399 /* Return a malloced slash-separated list of languages in MASK. */ | |
400 static char * | |
401 write_langs (unsigned int mask) | |
402 { | |
403 unsigned int n = 0, len = 0; | |
404 const char *lang_name; | |
405 char *result; | |
406 | |
407 for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
408 if (mask & (1U << n)) | |
409 len += strlen (lang_name) + 1; | |
410 | |
411 result = XNEWVEC (char, len); | |
412 len = 0; | |
413 for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
414 if (mask & (1U << n)) | |
415 { | |
416 if (len) | |
417 result[len++] = '/'; | |
418 strcpy (result + len, lang_name); | |
419 len += strlen (lang_name); | |
420 } | |
421 | |
422 result[len] = 0; | |
423 | |
424 return result; | |
425 } | |
426 | |
427 /* Complain that switch OPT_INDEX does not apply to this front end. */ | |
428 static void | |
429 complain_wrong_lang (const char *text, const struct cl_option *option, | |
430 unsigned int lang_mask) | |
431 { | |
432 char *ok_langs, *bad_lang; | |
433 | |
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434 /* The LTO front end inherits all the options from the first front |
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435 end that was used. However, not all the original front end |
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436 options make sense in LTO. |
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437 |
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438 A real solution would be to filter this in collect2, but collect2 |
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439 does not have access to all the option attributes to know what to |
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440 filter. So, in lto1 we silently accept inherited flags and do |
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441 nothing about it. */ |
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442 if (lang_mask & CL_LTO) |
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443 return; |
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444 |
0 | 445 ok_langs = write_langs (option->flags); |
446 bad_lang = write_langs (lang_mask); | |
447 | |
448 /* Eventually this should become a hard error IMO. */ | |
449 warning (0, "command line option \"%s\" is valid for %s but not for %s", | |
450 text, ok_langs, bad_lang); | |
451 | |
452 free (ok_langs); | |
453 free (bad_lang); | |
454 } | |
455 | |
456 /* Buffer the unknown option described by the string OPT. Currently, | |
457 we only complain about unknown -Wno-* options if they may have | |
458 prevented a diagnostic. Otherwise, we just ignore them. | |
459 Note that if we do complain, it is only as a warning, not an error; | |
460 passing the compiler an unrecognised -Wno-* option should never | |
461 change whether the compilation succeeds or fails. */ | |
462 | |
463 static void postpone_unknown_option_warning(const char *opt) | |
464 { | |
465 VEC_safe_push (const_char_p, heap, ignored_options, opt); | |
466 } | |
467 | |
468 /* Produce a warning for each option previously buffered. */ | |
469 | |
470 void print_ignored_options (void) | |
471 { | |
472 location_t saved_loc = input_location; | |
473 | |
474 input_location = 0; | |
475 | |
476 while (!VEC_empty (const_char_p, ignored_options)) | |
477 { | |
478 const char *opt; | |
479 opt = VEC_pop (const_char_p, ignored_options); | |
480 warning (0, "unrecognized command line option \"%s\"", opt); | |
481 } | |
482 | |
483 input_location = saved_loc; | |
484 } | |
485 | |
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486 |
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487 /* Handle option OPT_INDEX, and argument ARG, for the language |
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488 indicated by LANG_MASK. VALUE is true, unless no- form of an -f or |
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489 -W option was given. KIND is the diagnostic_t if this is a |
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490 diagnostics option, DK_UNSPECIFIED otherwise. Returns false if the |
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491 switch was invalid. */ |
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492 bool |
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493 handle_option (int opt_index, int value, const char *arg, |
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494 unsigned int lang_mask, int kind) |
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495 { |
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496 const struct cl_option *option = &cl_options[opt_index]; |
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497 |
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498 if (option->flag_var) |
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499 set_option (opt_index, value, arg, kind); |
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500 |
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501 if (option->flags & lang_mask) |
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502 { |
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503 if (lang_hooks.handle_option (opt_index, arg, value, kind) == 0) |
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504 return false; |
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505 #ifdef ENABLE_LTO |
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506 else |
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507 lto_register_user_option (opt_index, arg, value, lang_mask); |
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508 #endif |
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509 } |
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510 |
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511 if (option->flags & CL_COMMON) |
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512 { |
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513 if (common_handle_option (opt_index, arg, value, lang_mask, kind) == 0) |
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514 return false; |
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515 #ifdef ENABLE_LTO |
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516 else |
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517 lto_register_user_option (opt_index, arg, value, CL_COMMON); |
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518 #endif |
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519 } |
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520 |
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521 if (option->flags & CL_TARGET) |
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522 { |
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523 if (!targetm.handle_option (opt_index, arg, value)) |
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524 return false; |
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525 #ifdef ENABLE_LTO |
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526 else |
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527 lto_register_user_option (opt_index, arg, value, CL_TARGET); |
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528 #endif |
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529 } |
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530 return true; |
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531 } |
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532 |
0 | 533 /* Handle the switch beginning at ARGV for the language indicated by |
534 LANG_MASK. Returns the number of switches consumed. */ | |
535 static unsigned int | |
63
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536 read_cmdline_option (const char **argv, unsigned int lang_mask) |
0 | 537 { |
538 size_t opt_index; | |
539 const char *opt, *arg = 0; | |
540 char *dup = 0; | |
541 int value = 1; | |
542 unsigned int result = 0; | |
543 const struct cl_option *option; | |
544 | |
545 opt = argv[0]; | |
546 | |
547 opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); | |
548 if (opt_index == cl_options_count | |
549 && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') | |
550 && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') | |
551 { | |
552 /* Drop the "no-" from negative switches. */ | |
553 size_t len = strlen (opt) - 3; | |
554 | |
555 dup = XNEWVEC (char, len + 1); | |
556 dup[0] = '-'; | |
557 dup[1] = opt[1]; | |
558 memcpy (dup + 2, opt + 5, len - 2 + 1); | |
559 opt = dup; | |
560 value = 0; | |
561 opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); | |
562 if (opt_index == cl_options_count && opt[1] == 'W') | |
563 { | |
564 /* We don't generate warnings for unknown -Wno-* options | |
565 unless we issue diagnostics. */ | |
566 postpone_unknown_option_warning (argv[0]); | |
567 result = 1; | |
568 goto done; | |
569 } | |
570 } | |
571 | |
572 if (opt_index == cl_options_count) | |
573 goto done; | |
574 | |
575 option = &cl_options[opt_index]; | |
576 | |
577 /* Reject negative form of switches that don't take negatives as | |
578 unrecognized. */ | |
579 if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
580 goto done; | |
581 | |
582 /* We've recognized this switch. */ | |
583 result = 1; | |
584 | |
585 /* Check to see if the option is disabled for this configuration. */ | |
586 if (option->flags & CL_DISABLED) | |
587 { | |
588 error ("command line option %qs" | |
589 " is not supported by this configuration", opt); | |
590 goto done; | |
591 } | |
592 | |
593 /* Sort out any argument the switch takes. */ | |
594 if (option->flags & CL_JOINED) | |
595 { | |
596 /* Have arg point to the original switch. This is because | |
597 some code, such as disable_builtin_function, expects its | |
598 argument to be persistent until the program exits. */ | |
599 arg = argv[0] + cl_options[opt_index].opt_len + 1; | |
600 if (!value) | |
601 arg += strlen ("no-"); | |
602 | |
603 if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
604 { | |
605 if (option->flags & CL_SEPARATE) | |
606 { | |
607 arg = argv[1]; | |
608 result = 2; | |
609 } | |
610 else | |
611 /* Missing argument. */ | |
612 arg = NULL; | |
613 } | |
614 } | |
615 else if (option->flags & CL_SEPARATE) | |
616 { | |
617 arg = argv[1]; | |
618 result = 2; | |
619 } | |
620 | |
621 /* Now we've swallowed any potential argument, complain if this | |
622 is a switch for a different front end. */ | |
623 if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET))) | |
624 { | |
625 complain_wrong_lang (argv[0], option, lang_mask); | |
626 goto done; | |
627 } | |
628 else if ((option->flags & CL_TARGET) | |
629 && (option->flags & CL_LANG_ALL) | |
630 && !(option->flags & lang_mask)) | |
631 { | |
632 /* Complain for target flag language mismatches if any languages | |
633 are specified. */ | |
634 complain_wrong_lang (argv[0], option, lang_mask); | |
635 goto done; | |
636 } | |
637 | |
638 if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE))) | |
639 { | |
640 if (!lang_hooks.missing_argument (opt, opt_index)) | |
641 error ("missing argument to \"%s\"", opt); | |
642 goto done; | |
643 } | |
644 | |
645 /* If the switch takes an integer, convert it. */ | |
646 if (arg && (option->flags & CL_UINTEGER)) | |
647 { | |
648 value = integral_argument (arg); | |
649 if (value == -1) | |
650 { | |
651 error ("argument to \"%s\" should be a non-negative integer", | |
652 option->opt_text); | |
653 goto done; | |
654 } | |
655 } | |
656 | |
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657 if (!handle_option (opt_index, value, arg, lang_mask, DK_UNSPECIFIED)) |
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658 result = 0; |
0 | 659 |
660 done: | |
661 if (dup) | |
662 free (dup); | |
663 return result; | |
664 } | |
665 | |
666 /* Handle FILENAME from the command line. */ | |
667 static void | |
668 add_input_filename (const char *filename) | |
669 { | |
670 num_in_fnames++; | |
671 in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames); | |
672 in_fnames[num_in_fnames - 1] = filename; | |
673 } | |
674 | |
675 /* Add comma-separated strings to a char_p vector. */ | |
676 | |
677 static void | |
678 add_comma_separated_to_vector (VEC(char_p,heap) **pvec, const char* arg) | |
679 { | |
680 char *tmp; | |
681 char *r; | |
682 char *w; | |
683 char *token_start; | |
684 | |
685 /* We never free this string. */ | |
686 tmp = xstrdup (arg); | |
687 | |
688 r = tmp; | |
689 w = tmp; | |
690 token_start = tmp; | |
691 | |
692 while (*r != '\0') | |
693 { | |
694 if (*r == ',') | |
695 { | |
696 *w++ = '\0'; | |
697 ++r; | |
698 VEC_safe_push (char_p, heap, *pvec, token_start); | |
699 token_start = w; | |
700 } | |
701 if (*r == '\\' && r[1] == ',') | |
702 { | |
703 *w++ = ','; | |
704 r += 2; | |
705 } | |
706 else | |
707 *w++ = *r++; | |
708 } | |
709 if (*token_start != '\0') | |
710 VEC_safe_push (char_p, heap, *pvec, token_start); | |
711 } | |
712 | |
713 /* Return whether we should exclude FNDECL from instrumentation. */ | |
714 | |
715 bool | |
716 flag_instrument_functions_exclude_p (tree fndecl) | |
717 { | |
718 if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0) | |
719 { | |
720 const char *name; | |
721 int i; | |
722 char *s; | |
723 | |
724 name = lang_hooks.decl_printable_name (fndecl, 0); | |
725 for (i = 0; | |
726 VEC_iterate (char_p, flag_instrument_functions_exclude_functions, | |
727 i, s); | |
728 ++i) | |
729 { | |
730 if (strstr (name, s) != NULL) | |
731 return true; | |
732 } | |
733 } | |
734 | |
735 if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0) | |
736 { | |
737 const char *name; | |
738 int i; | |
739 char *s; | |
740 | |
741 name = DECL_SOURCE_FILE (fndecl); | |
742 for (i = 0; | |
743 VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s); | |
744 ++i) | |
745 { | |
746 if (strstr (name, s) != NULL) | |
747 return true; | |
748 } | |
749 } | |
750 | |
751 return false; | |
752 } | |
753 | |
754 | |
755 /* Decode and handle the vector of command line options. LANG_MASK | |
756 contains has a single bit set representing the current | |
757 language. */ | |
758 static void | |
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759 read_cmdline_options (unsigned int argc, const char **argv, unsigned int lang_mask) |
0 | 760 { |
761 unsigned int n, i; | |
762 | |
763 for (i = 1; i < argc; i += n) | |
764 { | |
765 const char *opt = argv[i]; | |
766 | |
767 /* Interpret "-" or a non-switch as a file name. */ | |
768 if (opt[0] != '-' || opt[1] == '\0') | |
769 { | |
770 if (main_input_filename == NULL) | |
771 { | |
772 main_input_filename = opt; | |
773 main_input_baselength | |
774 = base_of_path (main_input_filename, &main_input_basename); | |
775 } | |
776 add_input_filename (opt); | |
777 n = 1; | |
778 continue; | |
779 } | |
780 | |
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781 n = read_cmdline_option (argv + i, lang_mask); |
0 | 782 |
783 if (!n) | |
784 { | |
785 n = 1; | |
786 error ("unrecognized command line option \"%s\"", opt); | |
787 } | |
788 } | |
789 } | |
790 | |
791 /* Parse command line options and set default flag values. Do minimal | |
792 options processing. */ | |
793 void | |
794 decode_options (unsigned int argc, const char **argv) | |
795 { | |
796 static bool first_time_p = true; | |
797 static int initial_min_crossjump_insns; | |
798 static int initial_max_fields_for_field_sensitive; | |
799 static int initial_loop_invariant_max_bbs_in_loop; | |
800 static unsigned int initial_lang_mask; | |
801 | |
802 unsigned int i, lang_mask; | |
803 int opt1; | |
804 int opt2; | |
805 int opt3; | |
806 int opt1_max; | |
807 | |
808 if (first_time_p) | |
809 { | |
810 /* Perform language-specific options initialization. */ | |
811 initial_lang_mask = lang_mask = lang_hooks.init_options (argc, argv); | |
812 | |
813 lang_hooks.initialize_diagnostics (global_dc); | |
814 | |
815 /* Save initial values of parameters we reset. */ | |
816 initial_min_crossjump_insns | |
817 = compiler_params[PARAM_MIN_CROSSJUMP_INSNS].value; | |
818 initial_max_fields_for_field_sensitive | |
819 = compiler_params[PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE].value; | |
820 initial_loop_invariant_max_bbs_in_loop | |
821 = compiler_params[PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP].value; | |
822 } | |
823 else | |
824 lang_mask = initial_lang_mask; | |
825 | |
826 /* Scan to see what optimization level has been specified. That will | |
827 determine the default value of many flags. */ | |
828 for (i = 1; i < argc; i++) | |
829 { | |
830 if (!strcmp (argv[i], "-O")) | |
831 { | |
832 optimize = 1; | |
833 optimize_size = 0; | |
834 } | |
835 else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
836 { | |
837 /* Handle -Os, -O2, -O3, -O69, ... */ | |
838 const char *p = &argv[i][2]; | |
839 | |
840 if ((p[0] == 's') && (p[1] == 0)) | |
841 { | |
842 optimize_size = 1; | |
843 | |
844 /* Optimizing for size forces optimize to be 2. */ | |
845 optimize = 2; | |
846 } | |
847 else | |
848 { | |
849 const int optimize_val = read_integral_parameter (p, p - 2, -1); | |
850 if (optimize_val != -1) | |
851 { | |
852 optimize = optimize_val; | |
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853 if ((unsigned int) optimize > 255) |
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854 optimize = 255; |
0 | 855 optimize_size = 0; |
856 } | |
857 } | |
858 } | |
859 } | |
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860 |
0 | 861 /* Use priority coloring if cover classes is not defined for the |
862 target. */ | |
863 if (targetm.ira_cover_classes == NULL) | |
864 flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
865 | |
866 /* -O1 optimizations. */ | |
867 opt1 = (optimize >= 1); | |
868 flag_defer_pop = opt1; | |
869 #ifdef DELAY_SLOTS | |
870 flag_delayed_branch = opt1; | |
871 #endif | |
872 #ifdef CAN_DEBUG_WITHOUT_FP | |
873 flag_omit_frame_pointer = opt1; | |
874 #endif | |
875 flag_guess_branch_prob = opt1; | |
876 flag_cprop_registers = opt1; | |
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877 flag_forward_propagate = opt1; |
0 | 878 flag_if_conversion = opt1; |
879 flag_if_conversion2 = opt1; | |
880 flag_ipa_pure_const = opt1; | |
881 flag_ipa_reference = opt1; | |
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882 flag_ipa_profile = opt1; |
0 | 883 flag_merge_constants = opt1; |
884 flag_split_wide_types = opt1; | |
885 flag_tree_ccp = opt1; | |
886 flag_tree_dce = opt1; | |
887 flag_tree_dom = opt1; | |
888 flag_tree_dse = opt1; | |
889 flag_tree_ter = opt1; | |
890 flag_tree_sra = opt1; | |
891 flag_tree_copyrename = opt1; | |
892 flag_tree_fre = opt1; | |
893 flag_tree_copy_prop = opt1; | |
894 flag_tree_sink = opt1; | |
895 flag_tree_ch = opt1; | |
896 | |
897 /* -O2 optimizations. */ | |
898 opt2 = (optimize >= 2); | |
899 flag_inline_small_functions = opt2; | |
900 flag_indirect_inlining = opt2; | |
901 flag_thread_jumps = opt2; | |
902 flag_crossjumping = opt2; | |
903 flag_optimize_sibling_calls = opt2; | |
904 flag_cse_follow_jumps = opt2; | |
905 flag_gcse = opt2; | |
906 flag_expensive_optimizations = opt2; | |
907 flag_rerun_cse_after_loop = opt2; | |
908 flag_caller_saves = opt2; | |
909 flag_peephole2 = opt2; | |
910 #ifdef INSN_SCHEDULING | |
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911 /* Only run the pre-regalloc scheduling pass if optimizing for speed. */ |
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912 flag_schedule_insns = opt2 && ! optimize_size; |
0 | 913 flag_schedule_insns_after_reload = opt2; |
914 #endif | |
915 flag_regmove = opt2; | |
916 flag_strict_aliasing = opt2; | |
917 flag_strict_overflow = opt2; | |
918 flag_reorder_blocks = opt2; | |
919 flag_reorder_functions = opt2; | |
920 flag_tree_vrp = opt2; | |
921 flag_tree_builtin_call_dce = opt2; | |
922 flag_tree_pre = opt2; | |
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923 flag_tree_switch_conversion = opt2; |
0 | 924 flag_ipa_cp = opt2; |
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925 flag_ipa_sra = opt2; |
0 | 926 |
927 /* Track fields in field-sensitive alias analysis. */ | |
928 set_param_value ("max-fields-for-field-sensitive", | |
929 (opt2) ? 100 : initial_max_fields_for_field_sensitive); | |
930 | |
931 /* For -O1 only do loop invariant motion for very small loops. */ | |
932 set_param_value ("loop-invariant-max-bbs-in-loop", | |
933 (opt2) ? initial_loop_invariant_max_bbs_in_loop : 1000); | |
934 | |
935 /* -O3 optimizations. */ | |
936 opt3 = (optimize >= 3); | |
937 flag_predictive_commoning = opt3; | |
938 flag_inline_functions = opt3; | |
939 flag_unswitch_loops = opt3; | |
940 flag_gcse_after_reload = opt3; | |
941 flag_tree_vectorize = opt3; | |
942 flag_ipa_cp_clone = opt3; | |
943 if (flag_ipa_cp_clone) | |
944 flag_ipa_cp = 1; | |
945 | |
946 /* Just -O1/-O0 optimizations. */ | |
947 opt1_max = (optimize <= 1); | |
948 align_loops = opt1_max; | |
949 align_jumps = opt1_max; | |
950 align_labels = opt1_max; | |
951 align_functions = opt1_max; | |
952 | |
953 if (optimize_size) | |
954 { | |
955 /* Inlining of functions reducing size is a good idea regardless of them | |
956 being declared inline. */ | |
957 flag_inline_functions = 1; | |
958 | |
959 /* Basic optimization options. */ | |
960 optimize_size = 1; | |
961 if (optimize > 2) | |
962 optimize = 2; | |
963 | |
964 /* We want to crossjump as much as possible. */ | |
965 set_param_value ("min-crossjump-insns", 1); | |
966 } | |
967 else | |
968 set_param_value ("min-crossjump-insns", initial_min_crossjump_insns); | |
969 | |
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970 /* Enable -Werror=coverage-mismatch by default */ |
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971 enable_warning_as_error("coverage-mismatch", 1, lang_mask); |
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972 |
0 | 973 if (first_time_p) |
974 { | |
975 /* Initialize whether `char' is signed. */ | |
976 flag_signed_char = DEFAULT_SIGNED_CHAR; | |
977 /* Set this to a special "uninitialized" value. The actual default is | |
978 set after target options have been processed. */ | |
979 flag_short_enums = 2; | |
980 | |
981 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can | |
982 modify it. */ | |
983 target_flags = targetm.default_target_flags; | |
984 | |
985 /* Some targets have ABI-specified unwind tables. */ | |
986 flag_unwind_tables = targetm.unwind_tables_default; | |
987 } | |
988 | |
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989 #ifdef ENABLE_LTO |
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990 /* Clear any options currently held for LTO. */ |
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991 lto_clear_user_options (); |
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992 #endif |
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993 |
0 | 994 #ifdef OPTIMIZATION_OPTIONS |
995 /* Allow default optimizations to be specified on a per-machine basis. */ | |
996 OPTIMIZATION_OPTIONS (optimize, optimize_size); | |
997 #endif | |
998 | |
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999 read_cmdline_options (argc, argv, lang_mask); |
0 | 1000 |
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1001 if (dump_base_name && ! IS_ABSOLUTE_PATH (dump_base_name)) |
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1002 { |
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1003 /* First try to make DUMP_BASE_NAME relative to the DUMP_DIR_NAME |
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1004 directory. Then try to make DUMP_BASE_NAME relative to the |
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1005 AUX_BASE_NAME directory, typically the directory to contain |
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1006 the object file. */ |
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1007 if (dump_dir_name) |
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1008 dump_base_name = concat (dump_dir_name, dump_base_name, NULL); |
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1009 else if (aux_base_name) |
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1010 { |
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1011 const char *aux_base; |
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1012 |
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1013 base_of_path (aux_base_name, &aux_base); |
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1014 if (aux_base_name != aux_base) |
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1015 { |
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1016 int dir_len = aux_base - aux_base_name; |
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1017 char *new_dump_base_name = |
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1018 XNEWVEC (char, strlen(dump_base_name) + dir_len + 1); |
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1019 |
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1020 /* Copy directory component from AUX_BASE_NAME. */ |
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1021 memcpy (new_dump_base_name, aux_base_name, dir_len); |
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1022 /* Append existing DUMP_BASE_NAME. */ |
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1023 strcpy (new_dump_base_name + dir_len, dump_base_name); |
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1024 dump_base_name = new_dump_base_name; |
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1025 } |
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1026 } |
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1027 } |
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1028 |
0 | 1029 /* Handle related options for unit-at-a-time, toplevel-reorder, and |
1030 section-anchors. */ | |
1031 if (!flag_unit_at_a_time) | |
1032 { | |
1033 if (flag_section_anchors == 1) | |
1034 error ("Section anchors must be disabled when unit-at-a-time " | |
1035 "is disabled."); | |
1036 flag_section_anchors = 0; | |
1037 if (flag_toplevel_reorder == 1) | |
1038 error ("Toplevel reorder must be disabled when unit-at-a-time " | |
1039 "is disabled."); | |
1040 flag_toplevel_reorder = 0; | |
1041 } | |
1042 /* Unless the user has asked for section anchors, we disable toplevel | |
1043 reordering at -O0 to disable transformations that might be surprising | |
1044 to end users and to get -fno-toplevel-reorder tested. */ | |
1045 if (!optimize && flag_toplevel_reorder == 2 && flag_section_anchors != 1) | |
1046 { | |
1047 flag_toplevel_reorder = 0; | |
1048 flag_section_anchors = 0; | |
1049 } | |
1050 if (!flag_toplevel_reorder) | |
1051 { | |
1052 if (flag_section_anchors == 1) | |
1053 error ("section anchors must be disabled when toplevel reorder" | |
1054 " is disabled"); | |
1055 flag_section_anchors = 0; | |
1056 } | |
1057 | |
1058 if (first_time_p) | |
1059 { | |
1060 if (flag_pie) | |
1061 flag_pic = flag_pie; | |
1062 if (flag_pic && !flag_pie) | |
1063 flag_shlib = 1; | |
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1064 first_time_p = false; |
0 | 1065 } |
1066 | |
1067 if (optimize == 0) | |
1068 { | |
1069 /* Inlining does not work if not optimizing, | |
1070 so force it not to be done. */ | |
1071 warn_inline = 0; | |
1072 flag_no_inline = 1; | |
1073 } | |
1074 | |
1075 /* The optimization to partition hot and cold basic blocks into separate | |
1076 sections of the .o and executable files does not work (currently) | |
1077 with exception handling. This is because there is no support for | |
1078 generating unwind info. If flag_exceptions is turned on we need to | |
1079 turn off the partitioning optimization. */ | |
1080 | |
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1081 if (flag_exceptions && flag_reorder_blocks_and_partition |
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1082 && (USING_SJLJ_EXCEPTIONS |
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1083 #ifdef TARGET_UNWIND_INFO |
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1084 || 1 |
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1085 #endif |
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1086 )) |
0 | 1087 { |
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1088 inform (input_location, |
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1089 "-freorder-blocks-and-partition does not work with exceptions on this architecture"); |
0 | 1090 flag_reorder_blocks_and_partition = 0; |
1091 flag_reorder_blocks = 1; | |
1092 } | |
1093 | |
1094 /* If user requested unwind info, then turn off the partitioning | |
1095 optimization. */ | |
1096 | |
1097 if (flag_unwind_tables && ! targetm.unwind_tables_default | |
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1098 && flag_reorder_blocks_and_partition |
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1099 && (USING_SJLJ_EXCEPTIONS |
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1100 #ifdef TARGET_UNWIND_INFO |
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1101 || 1 |
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1102 #endif |
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1103 )) |
0 | 1104 { |
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1105 inform (input_location, |
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1106 "-freorder-blocks-and-partition does not support unwind info on this architecture"); |
0 | 1107 flag_reorder_blocks_and_partition = 0; |
1108 flag_reorder_blocks = 1; | |
1109 } | |
1110 | |
1111 /* If the target requested unwind info, then turn off the partitioning | |
1112 optimization with a different message. Likewise, if the target does not | |
1113 support named sections. */ | |
1114 | |
1115 if (flag_reorder_blocks_and_partition | |
1116 && (!targetm.have_named_sections | |
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1117 || (flag_unwind_tables && targetm.unwind_tables_default |
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1118 && (USING_SJLJ_EXCEPTIONS |
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1119 #ifdef TARGET_UNWIND_INFO |
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1120 || 1 |
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1121 #endif |
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1122 )))) |
0 | 1123 { |
1124 inform (input_location, | |
1125 "-freorder-blocks-and-partition does not work on this architecture"); | |
1126 flag_reorder_blocks_and_partition = 0; | |
1127 flag_reorder_blocks = 1; | |
1128 } | |
1129 | |
1130 /* Pipelining of outer loops is only possible when general pipelining | |
1131 capabilities are requested. */ | |
1132 if (!flag_sel_sched_pipelining) | |
1133 flag_sel_sched_pipelining_outer_loops = 0; | |
1134 | |
1135 if (!targetm.ira_cover_classes | |
1136 && flag_ira_algorithm == IRA_ALGORITHM_CB) | |
1137 { | |
1138 inform (input_location, | |
1139 "-fira-algorithm=CB does not work on this architecture"); | |
1140 flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
1141 } | |
1142 | |
1143 if (flag_conserve_stack) | |
1144 { | |
1145 if (!PARAM_SET_P (PARAM_LARGE_STACK_FRAME)) | |
1146 PARAM_VALUE (PARAM_LARGE_STACK_FRAME) = 100; | |
1147 if (!PARAM_SET_P (PARAM_STACK_FRAME_GROWTH)) | |
1148 PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40; | |
1149 } | |
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1150 if (flag_wpa || flag_ltrans) |
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1151 { |
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1152 /* These passes are not WHOPR compatible yet. */ |
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1153 flag_ipa_pta = 0; |
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1154 flag_ipa_struct_reorg = 0; |
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1155 } |
0 | 1156 |
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1157 if (flag_lto || flag_whopr) |
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1158 { |
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1159 #ifdef ENABLE_LTO |
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1160 flag_generate_lto = 1; |
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1161 |
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1162 /* When generating IL, do not operate in whole-program mode. |
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1163 Otherwise, symbols will be privatized too early, causing link |
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1164 errors later. */ |
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1165 flag_whole_program = 0; |
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1166 #else |
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1167 error ("LTO support has not been enabled in this configuration"); |
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1168 #endif |
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1169 } |
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1170 |
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1171 /* Reconcile -flto and -fwhopr. Set additional flags as appropriate and |
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1172 check option consistency. */ |
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1173 if (flag_lto && flag_whopr) |
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1174 error ("-flto and -fwhopr are mutually exclusive"); |
0 | 1175 } |
1176 | |
1177 #define LEFT_COLUMN 27 | |
1178 | |
1179 /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
1180 followed by word-wrapped HELP in a second column. */ | |
1181 static void | |
1182 wrap_help (const char *help, | |
1183 const char *item, | |
1184 unsigned int item_width, | |
1185 unsigned int columns) | |
1186 { | |
1187 unsigned int col_width = LEFT_COLUMN; | |
1188 unsigned int remaining, room, len; | |
1189 | |
1190 remaining = strlen (help); | |
1191 | |
1192 do | |
1193 { | |
1194 room = columns - 3 - MAX (col_width, item_width); | |
1195 if (room > columns) | |
1196 room = 0; | |
1197 len = remaining; | |
1198 | |
1199 if (room < len) | |
1200 { | |
1201 unsigned int i; | |
1202 | |
1203 for (i = 0; help[i]; i++) | |
1204 { | |
1205 if (i >= room && len != remaining) | |
1206 break; | |
1207 if (help[i] == ' ') | |
1208 len = i; | |
1209 else if ((help[i] == '-' || help[i] == '/') | |
1210 && help[i + 1] != ' ' | |
1211 && i > 0 && ISALPHA (help[i - 1])) | |
1212 len = i + 1; | |
1213 } | |
1214 } | |
1215 | |
1216 printf( " %-*.*s %.*s\n", col_width, item_width, item, len, help); | |
1217 item_width = 0; | |
1218 while (help[len] == ' ') | |
1219 len++; | |
1220 help += len; | |
1221 remaining -= len; | |
1222 } | |
1223 while (remaining); | |
1224 } | |
1225 | |
1226 /* Print help for a specific front-end, etc. */ | |
1227 static void | |
1228 print_filtered_help (unsigned int include_flags, | |
1229 unsigned int exclude_flags, | |
1230 unsigned int any_flags, | |
1231 unsigned int columns) | |
1232 { | |
1233 unsigned int i; | |
1234 const char *help; | |
1235 static char *printed = NULL; | |
1236 bool found = false; | |
1237 bool displayed = false; | |
1238 | |
1239 if (include_flags == CL_PARAMS) | |
1240 { | |
1241 for (i = 0; i < LAST_PARAM; i++) | |
1242 { | |
1243 const char *param = compiler_params[i].option; | |
1244 | |
1245 help = compiler_params[i].help; | |
1246 if (help == NULL || *help == '\0') | |
1247 { | |
1248 if (exclude_flags & CL_UNDOCUMENTED) | |
1249 continue; | |
1250 help = undocumented_msg; | |
1251 } | |
1252 | |
1253 /* Get the translation. */ | |
1254 help = _(help); | |
1255 | |
1256 wrap_help (help, param, strlen (param), columns); | |
1257 } | |
1258 putchar ('\n'); | |
1259 return; | |
1260 } | |
1261 | |
1262 if (!printed) | |
1263 printed = XCNEWVAR (char, cl_options_count); | |
1264 | |
1265 for (i = 0; i < cl_options_count; i++) | |
1266 { | |
1267 static char new_help[128]; | |
1268 const struct cl_option *option = cl_options + i; | |
1269 unsigned int len; | |
1270 const char *opt; | |
1271 const char *tab; | |
1272 | |
1273 if (include_flags == 0 | |
1274 || ((option->flags & include_flags) != include_flags)) | |
1275 { | |
1276 if ((option->flags & any_flags) == 0) | |
1277 continue; | |
1278 } | |
1279 | |
1280 /* Skip unwanted switches. */ | |
1281 if ((option->flags & exclude_flags) != 0) | |
1282 continue; | |
1283 | |
1284 found = true; | |
1285 /* Skip switches that have already been printed. */ | |
1286 if (printed[i]) | |
1287 continue; | |
1288 | |
1289 printed[i] = true; | |
1290 | |
1291 help = option->help; | |
1292 if (help == NULL) | |
1293 { | |
1294 if (exclude_flags & CL_UNDOCUMENTED) | |
1295 continue; | |
1296 help = undocumented_msg; | |
1297 } | |
1298 | |
1299 /* Get the translation. */ | |
1300 help = _(help); | |
1301 | |
1302 /* Find the gap between the name of the | |
1303 option and its descriptive text. */ | |
1304 tab = strchr (help, '\t'); | |
1305 if (tab) | |
1306 { | |
1307 len = tab - help; | |
1308 opt = help; | |
1309 help = tab + 1; | |
1310 } | |
1311 else | |
1312 { | |
1313 opt = option->opt_text; | |
1314 len = strlen (opt); | |
1315 } | |
1316 | |
1317 /* With the -Q option enabled we change the descriptive text associated | |
1318 with an option to be an indication of its current setting. */ | |
1319 if (!quiet_flag) | |
1320 { | |
1321 if (len < (LEFT_COLUMN + 2)) | |
1322 strcpy (new_help, "\t\t"); | |
1323 else | |
1324 strcpy (new_help, "\t"); | |
1325 | |
1326 if (option->flag_var != NULL) | |
1327 { | |
1328 if (option->flags & CL_JOINED) | |
1329 { | |
1330 if (option->var_type == CLVC_STRING) | |
1331 { | |
1332 if (* (const char **) option->flag_var != NULL) | |
1333 snprintf (new_help + strlen (new_help), | |
1334 sizeof (new_help) - strlen (new_help), | |
1335 * (const char **) option->flag_var); | |
1336 } | |
1337 else | |
1338 sprintf (new_help + strlen (new_help), | |
1339 "%#x", * (int *) option->flag_var); | |
1340 } | |
1341 else | |
1342 strcat (new_help, option_enabled (i) | |
1343 ? _("[enabled]") : _("[disabled]")); | |
1344 } | |
1345 | |
1346 help = new_help; | |
1347 } | |
1348 | |
1349 wrap_help (help, opt, len, columns); | |
1350 displayed = true; | |
1351 } | |
1352 | |
1353 if (! found) | |
1354 { | |
1355 unsigned int langs = include_flags & CL_LANG_ALL; | |
1356 | |
1357 if (langs == 0) | |
1358 printf (_(" No options with the desired characteristics were found\n")); | |
1359 else | |
1360 { | |
1361 unsigned int i; | |
1362 | |
1363 /* PR 31349: Tell the user how to see all of the | |
1364 options supported by a specific front end. */ | |
1365 for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
1366 if ((1U << i) & langs) | |
1367 printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
1368 lang_names[i], lang_names[i]); | |
1369 } | |
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1370 |
0 | 1371 } |
1372 else if (! displayed) | |
1373 printf (_(" All options with the desired characteristics have already been displayed\n")); | |
1374 | |
1375 putchar ('\n'); | |
1376 } | |
1377 | |
1378 /* Display help for a specified type of option. | |
1379 The options must have ALL of the INCLUDE_FLAGS set | |
1380 ANY of the flags in the ANY_FLAGS set | |
1381 and NONE of the EXCLUDE_FLAGS set. */ | |
1382 static void | |
1383 print_specific_help (unsigned int include_flags, | |
1384 unsigned int exclude_flags, | |
1385 unsigned int any_flags) | |
1386 { | |
1387 unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1388 const char * description = NULL; | |
1389 const char * descrip_extra = ""; | |
1390 size_t i; | |
1391 unsigned int flag; | |
1392 static unsigned int columns = 0; | |
1393 | |
1394 /* Sanity check: Make sure that we do not have more | |
1395 languages than we have bits available to enumerate them. */ | |
1396 gcc_assert ((1U << cl_lang_count) < CL_MIN_OPTION_CLASS); | |
1397 | |
1398 /* If we have not done so already, obtain | |
1399 the desired maximum width of the output. */ | |
1400 if (columns == 0) | |
1401 { | |
1402 const char *p; | |
1403 | |
1404 GET_ENVIRONMENT (p, "COLUMNS"); | |
1405 if (p != NULL) | |
1406 { | |
1407 int value = atoi (p); | |
1408 | |
1409 if (value > 0) | |
1410 columns = value; | |
1411 } | |
1412 | |
1413 if (columns == 0) | |
1414 /* Use a reasonable default. */ | |
1415 columns = 80; | |
1416 } | |
1417 | |
1418 /* Decide upon the title for the options that we are going to display. */ | |
1419 for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
1420 { | |
1421 switch (flag & include_flags) | |
1422 { | |
1423 case 0: | |
1424 break; | |
1425 | |
1426 case CL_TARGET: | |
1427 description = _("The following options are target specific"); | |
1428 break; | |
1429 case CL_WARNING: | |
1430 description = _("The following options control compiler warning messages"); | |
1431 break; | |
1432 case CL_OPTIMIZATION: | |
1433 description = _("The following options control optimizations"); | |
1434 break; | |
1435 case CL_COMMON: | |
1436 description = _("The following options are language-independent"); | |
1437 break; | |
1438 case CL_PARAMS: | |
1439 description = _("The --param option recognizes the following as parameters"); | |
1440 break; | |
1441 default: | |
1442 if (i >= cl_lang_count) | |
1443 break; | |
1444 if (exclude_flags & all_langs_mask) | |
1445 description = _("The following options are specific to just the language "); | |
1446 else | |
1447 description = _("The following options are supported by the language "); | |
1448 descrip_extra = lang_names [i]; | |
1449 break; | |
1450 } | |
1451 } | |
1452 | |
1453 if (description == NULL) | |
1454 { | |
1455 if (any_flags == 0) | |
1456 { | |
1457 if (include_flags & CL_UNDOCUMENTED) | |
1458 description = _("The following options are not documented"); | |
1459 else if (include_flags & CL_SEPARATE) | |
1460 description = _("The following options take separate arguments"); | |
1461 else if (include_flags & CL_JOINED) | |
1462 description = _("The following options take joined arguments"); | |
1463 else | |
1464 { | |
1465 internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
1466 include_flags); | |
1467 return; | |
1468 } | |
1469 } | |
1470 else | |
1471 { | |
1472 if (any_flags & all_langs_mask) | |
1473 description = _("The following options are language-related"); | |
1474 else | |
1475 description = _("The following options are language-independent"); | |
1476 } | |
1477 } | |
1478 | |
1479 printf ("%s%s:\n", description, descrip_extra); | |
1480 print_filtered_help (include_flags, exclude_flags, any_flags, columns); | |
1481 } | |
1482 | |
1483 /* Handle target- and language-independent options. Return zero to | |
1484 generate an "unknown option" message. Only options that need | |
1485 extra handling need to be listed here; if you simply want | |
1486 VALUE assigned to a variable, it happens automatically. */ | |
1487 | |
1488 static int | |
1489 common_handle_option (size_t scode, const char *arg, int value, | |
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1490 unsigned int lang_mask, int kind ATTRIBUTE_UNUSED) |
0 | 1491 { |
1492 static bool verbose = false; | |
1493 enum opt_code code = (enum opt_code) scode; | |
1494 | |
1495 switch (code) | |
1496 { | |
1497 case OPT__param: | |
1498 handle_param (arg); | |
1499 break; | |
1500 | |
1501 case OPT_v: | |
1502 verbose = true; | |
1503 break; | |
1504 | |
1505 case OPT_fhelp: | |
1506 case OPT__help: | |
1507 { | |
1508 unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1509 unsigned int undoc_mask; | |
1510 unsigned int i; | |
1511 | |
1512 undoc_mask = (verbose | extra_warnings) ? 0 : CL_UNDOCUMENTED; | |
1513 /* First display any single language specific options. */ | |
1514 for (i = 0; i < cl_lang_count; i++) | |
1515 print_specific_help | |
1516 (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0); | |
1517 /* Next display any multi language specific options. */ | |
1518 print_specific_help (0, undoc_mask, all_langs_mask); | |
1519 /* Then display any remaining, non-language options. */ | |
1520 for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
1521 print_specific_help (i, undoc_mask, 0); | |
1522 exit_after_options = true; | |
1523 break; | |
1524 } | |
1525 | |
1526 case OPT_ftarget_help: | |
1527 case OPT__target_help: | |
1528 print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0); | |
1529 exit_after_options = true; | |
1530 | |
1531 /* Allow the target a chance to give the user some additional information. */ | |
1532 if (targetm.target_help) | |
1533 targetm.target_help (); | |
1534 break; | |
1535 | |
1536 case OPT_fhelp_: | |
1537 case OPT__help_: | |
1538 { | |
1539 const char * a = arg; | |
1540 unsigned int include_flags = 0; | |
1541 /* Note - by default we include undocumented options when listing | |
1542 specific classes. If you only want to see documented options | |
1543 then add ",^undocumented" to the --help= option. E.g.: | |
1544 | |
1545 --help=target,^undocumented */ | |
1546 unsigned int exclude_flags = 0; | |
1547 | |
1548 /* Walk along the argument string, parsing each word in turn. | |
1549 The format is: | |
1550 arg = [^]{word}[,{arg}] | |
1551 word = {optimizers|target|warnings|undocumented| | |
1552 params|common|<language>} */ | |
1553 while (* a != 0) | |
1554 { | |
1555 static struct | |
1556 { | |
1557 const char * string; | |
1558 unsigned int flag; | |
1559 } | |
1560 specifics[] = | |
1561 { | |
1562 { "optimizers", CL_OPTIMIZATION }, | |
1563 { "target", CL_TARGET }, | |
1564 { "warnings", CL_WARNING }, | |
1565 { "undocumented", CL_UNDOCUMENTED }, | |
1566 { "params", CL_PARAMS }, | |
1567 { "joined", CL_JOINED }, | |
1568 { "separate", CL_SEPARATE }, | |
1569 { "common", CL_COMMON }, | |
1570 { NULL, 0 } | |
1571 }; | |
1572 unsigned int * pflags; | |
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1573 const char * comma; |
0 | 1574 unsigned int lang_flag, specific_flag; |
1575 unsigned int len; | |
1576 unsigned int i; | |
1577 | |
1578 if (* a == '^') | |
1579 { | |
1580 ++ a; | |
1581 pflags = & exclude_flags; | |
1582 } | |
1583 else | |
1584 pflags = & include_flags; | |
1585 | |
1586 comma = strchr (a, ','); | |
1587 if (comma == NULL) | |
1588 len = strlen (a); | |
1589 else | |
1590 len = comma - a; | |
1591 if (len == 0) | |
1592 { | |
1593 a = comma + 1; | |
1594 continue; | |
1595 } | |
1596 | |
1597 /* Check to see if the string matches an option class name. */ | |
1598 for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
1599 if (strncasecmp (a, specifics[i].string, len) == 0) | |
1600 { | |
1601 specific_flag = specifics[i].flag; | |
1602 break; | |
1603 } | |
1604 | |
1605 /* Check to see if the string matches a language name. | |
1606 Note - we rely upon the alpha-sorted nature of the entries in | |
1607 the lang_names array, specifically that shorter names appear | |
1608 before their longer variants. (i.e. C before C++). That way | |
1609 when we are attempting to match --help=c for example we will | |
1610 match with C first and not C++. */ | |
1611 for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
1612 if (strncasecmp (a, lang_names[i], len) == 0) | |
1613 { | |
1614 lang_flag = 1U << i; | |
1615 break; | |
1616 } | |
1617 | |
1618 if (specific_flag != 0) | |
1619 { | |
1620 if (lang_flag == 0) | |
1621 * pflags |= specific_flag; | |
1622 else | |
1623 { | |
1624 /* The option's argument matches both the start of a | |
1625 language name and the start of an option class name. | |
1626 We have a special case for when the user has | |
1627 specified "--help=c", but otherwise we have to issue | |
1628 a warning. */ | |
1629 if (strncasecmp (a, "c", len) == 0) | |
1630 * pflags |= lang_flag; | |
1631 else | |
1632 fnotice (stderr, | |
1633 "warning: --help argument %.*s is ambiguous, please be more specific\n", | |
1634 len, a); | |
1635 } | |
1636 } | |
1637 else if (lang_flag != 0) | |
1638 * pflags |= lang_flag; | |
1639 else | |
1640 fnotice (stderr, | |
1641 "warning: unrecognized argument to --help= option: %.*s\n", | |
1642 len, a); | |
1643 | |
1644 if (comma == NULL) | |
1645 break; | |
1646 a = comma + 1; | |
1647 } | |
1648 | |
1649 if (include_flags) | |
1650 print_specific_help (include_flags, exclude_flags, 0); | |
1651 exit_after_options = true; | |
1652 break; | |
1653 } | |
1654 | |
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1655 case OPT_fversion: |
0 | 1656 case OPT__version: |
1657 exit_after_options = true; | |
1658 break; | |
1659 | |
1660 case OPT_G: | |
1661 g_switch_value = value; | |
1662 g_switch_set = true; | |
1663 break; | |
1664 | |
1665 case OPT_O: | |
1666 case OPT_Os: | |
1667 /* Currently handled in a prescan. */ | |
1668 break; | |
1669 | |
1670 case OPT_Werror_: | |
1671 enable_warning_as_error (arg, value, lang_mask); | |
1672 break; | |
1673 | |
1674 case OPT_Wlarger_than_: | |
55
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1675 /* This form corresponds to -Wlarger-than-. |
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1676 Kept for backward compatibility. |
0 | 1677 Don't use it as the first argument of warning(). */ |
1678 | |
1679 case OPT_Wlarger_than_eq: | |
1680 larger_than_size = value; | |
1681 warn_larger_than = value != -1; | |
1682 break; | |
1683 | |
1684 case OPT_Wframe_larger_than_: | |
1685 frame_larger_than_size = value; | |
1686 warn_frame_larger_than = value != -1; | |
1687 break; | |
1688 | |
1689 case OPT_Wstrict_aliasing: | |
1690 set_Wstrict_aliasing (value); | |
1691 break; | |
1692 | |
1693 case OPT_Wstrict_aliasing_: | |
1694 warn_strict_aliasing = value; | |
1695 break; | |
1696 | |
1697 case OPT_Wstrict_overflow: | |
1698 warn_strict_overflow = (value | |
1699 ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
1700 : 0); | |
1701 break; | |
1702 | |
1703 case OPT_Wstrict_overflow_: | |
1704 warn_strict_overflow = value; | |
1705 break; | |
1706 | |
1707 case OPT_Wunused: | |
1708 warn_unused = value; | |
1709 break; | |
1710 | |
1711 case OPT_aux_info: | |
1712 case OPT_aux_info_: | |
1713 aux_info_file_name = arg; | |
1714 flag_gen_aux_info = 1; | |
1715 break; | |
1716 | |
1717 case OPT_auxbase: | |
1718 aux_base_name = arg; | |
1719 break; | |
1720 | |
1721 case OPT_auxbase_strip: | |
1722 { | |
1723 char *tmp = xstrdup (arg); | |
1724 strip_off_ending (tmp, strlen (tmp)); | |
1725 if (tmp[0]) | |
1726 aux_base_name = tmp; | |
1727 } | |
1728 break; | |
1729 | |
1730 case OPT_d: | |
1731 decode_d_option (arg); | |
1732 break; | |
1733 | |
1734 case OPT_dumpbase: | |
1735 dump_base_name = arg; | |
1736 break; | |
1737 | |
63
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1738 case OPT_dumpdir: |
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1739 dump_dir_name = arg; |
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1740 break; |
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1741 |
0 | 1742 case OPT_falign_functions_: |
1743 align_functions = value; | |
1744 break; | |
1745 | |
1746 case OPT_falign_jumps_: | |
1747 align_jumps = value; | |
1748 break; | |
1749 | |
1750 case OPT_falign_labels_: | |
1751 align_labels = value; | |
1752 break; | |
1753 | |
1754 case OPT_falign_loops_: | |
1755 align_loops = value; | |
1756 break; | |
1757 | |
1758 case OPT_fbranch_probabilities: | |
1759 flag_branch_probabilities_set = true; | |
1760 break; | |
1761 | |
1762 case OPT_fcall_used_: | |
1763 fix_register (arg, 0, 1); | |
1764 break; | |
1765 | |
1766 case OPT_fcall_saved_: | |
1767 fix_register (arg, 0, 0); | |
1768 break; | |
1769 | |
1770 case OPT_fdbg_cnt_: | |
1771 dbg_cnt_process_opt (arg); | |
1772 break; | |
1773 | |
1774 case OPT_fdbg_cnt_list: | |
1775 dbg_cnt_list_all_counters (); | |
1776 break; | |
1777 | |
1778 case OPT_fdebug_prefix_map_: | |
1779 add_debug_prefix_map (arg); | |
1780 break; | |
1781 | |
1782 case OPT_fdiagnostics_show_location_: | |
1783 if (!strcmp (arg, "once")) | |
1784 diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
1785 else if (!strcmp (arg, "every-line")) | |
1786 diagnostic_prefixing_rule (global_dc) | |
1787 = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
1788 else | |
1789 return 0; | |
1790 break; | |
1791 | |
1792 case OPT_fdiagnostics_show_option: | |
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1793 global_dc->show_option_requested = value; |
0 | 1794 break; |
1795 | |
1796 case OPT_fdump_: | |
1797 if (!dump_switch_p (arg)) | |
1798 return 0; | |
1799 break; | |
1800 | |
55
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1801 case OPT_fexcess_precision_: |
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1802 if (!strcmp (arg, "fast")) |
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1803 flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; |
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1804 else if (!strcmp (arg, "standard")) |
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1805 flag_excess_precision_cmdline = EXCESS_PRECISION_STANDARD; |
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1806 else |
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1807 error ("unknown excess precision style \"%s\"", arg); |
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1808 break; |
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1809 |
0 | 1810 case OPT_ffast_math: |
1811 set_fast_math_flags (value); | |
1812 break; | |
1813 | |
1814 case OPT_funsafe_math_optimizations: | |
1815 set_unsafe_math_optimizations_flags (value); | |
1816 break; | |
1817 | |
1818 case OPT_ffixed_: | |
1819 fix_register (arg, 1, 1); | |
1820 break; | |
1821 | |
1822 case OPT_finline_limit_: | |
1823 case OPT_finline_limit_eq: | |
1824 set_param_value ("max-inline-insns-single", value / 2); | |
1825 set_param_value ("max-inline-insns-auto", value / 2); | |
1826 break; | |
1827 | |
1828 case OPT_finstrument_functions_exclude_function_list_: | |
1829 add_comma_separated_to_vector | |
1830 (&flag_instrument_functions_exclude_functions, arg); | |
1831 break; | |
1832 | |
1833 case OPT_finstrument_functions_exclude_file_list_: | |
1834 add_comma_separated_to_vector | |
1835 (&flag_instrument_functions_exclude_files, arg); | |
1836 break; | |
1837 | |
1838 case OPT_fmessage_length_: | |
1839 pp_set_line_maximum_length (global_dc->printer, value); | |
1840 break; | |
1841 | |
1842 case OPT_fpack_struct_: | |
1843 if (value <= 0 || (value & (value - 1)) || value > 16) | |
1844 error ("structure alignment must be a small power of two, not %d", value); | |
1845 else | |
1846 { | |
1847 initial_max_fld_align = value; | |
1848 maximum_field_alignment = value * BITS_PER_UNIT; | |
1849 } | |
1850 break; | |
1851 | |
1852 case OPT_fpeel_loops: | |
1853 flag_peel_loops_set = true; | |
1854 break; | |
1855 | |
55
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1856 case OPT_fplugin_: |
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1857 #ifdef ENABLE_PLUGIN |
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1858 add_new_plugin (arg); |
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1859 #else |
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1860 error ("Plugin support is disabled. Configure with --enable-plugin."); |
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1861 #endif |
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1862 break; |
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1863 |
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1864 case OPT_fplugin_arg_: |
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1865 #ifdef ENABLE_PLUGIN |
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1866 parse_plugin_arg_opt (arg); |
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1867 #else |
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1868 error ("Plugin support is disabled. Configure with --enable-plugin."); |
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1869 #endif |
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1870 break; |
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1871 |
0 | 1872 case OPT_fprofile_arcs: |
1873 profile_arc_flag_set = true; | |
1874 break; | |
1875 | |
1876 case OPT_finline_functions: | |
1877 flag_inline_functions_set = true; | |
1878 break; | |
1879 | |
1880 case OPT_fprofile_dir_: | |
1881 profile_data_prefix = xstrdup (arg); | |
1882 break; | |
1883 | |
1884 case OPT_fprofile_use_: | |
1885 profile_data_prefix = xstrdup (arg); | |
1886 flag_profile_use = true; | |
1887 value = true; | |
1888 /* No break here - do -fprofile-use processing. */ | |
1889 case OPT_fprofile_use: | |
1890 if (!flag_branch_probabilities_set) | |
1891 flag_branch_probabilities = value; | |
1892 if (!flag_profile_values_set) | |
1893 flag_profile_values = value; | |
1894 if (!flag_unroll_loops_set) | |
1895 flag_unroll_loops = value; | |
1896 if (!flag_peel_loops_set) | |
1897 flag_peel_loops = value; | |
1898 if (!flag_tracer_set) | |
1899 flag_tracer = value; | |
1900 if (!flag_value_profile_transformations_set) | |
1901 flag_value_profile_transformations = value; | |
1902 if (!flag_inline_functions_set) | |
1903 flag_inline_functions = value; | |
1904 if (!flag_ipa_cp_set) | |
1905 flag_ipa_cp = value; | |
1906 if (!flag_ipa_cp_clone_set | |
1907 && value && flag_ipa_cp) | |
1908 flag_ipa_cp_clone = value; | |
1909 if (!flag_predictive_commoning_set) | |
1910 flag_predictive_commoning = value; | |
1911 if (!flag_unswitch_loops_set) | |
1912 flag_unswitch_loops = value; | |
1913 if (!flag_gcse_after_reload_set) | |
1914 flag_gcse_after_reload = value; | |
1915 break; | |
1916 | |
1917 case OPT_fprofile_generate_: | |
1918 profile_data_prefix = xstrdup (arg); | |
1919 value = true; | |
1920 /* No break here - do -fprofile-generate processing. */ | |
1921 case OPT_fprofile_generate: | |
1922 if (!profile_arc_flag_set) | |
1923 profile_arc_flag = value; | |
1924 if (!flag_profile_values_set) | |
1925 flag_profile_values = value; | |
1926 if (!flag_value_profile_transformations_set) | |
1927 flag_value_profile_transformations = value; | |
1928 if (!flag_inline_functions_set) | |
1929 flag_inline_functions = value; | |
1930 break; | |
1931 | |
1932 case OPT_fprofile_values: | |
1933 flag_profile_values_set = true; | |
1934 break; | |
1935 | |
1936 case OPT_fvisibility_: | |
1937 { | |
1938 if (!strcmp(arg, "default")) | |
1939 default_visibility = VISIBILITY_DEFAULT; | |
1940 else if (!strcmp(arg, "internal")) | |
1941 default_visibility = VISIBILITY_INTERNAL; | |
1942 else if (!strcmp(arg, "hidden")) | |
1943 default_visibility = VISIBILITY_HIDDEN; | |
1944 else if (!strcmp(arg, "protected")) | |
1945 default_visibility = VISIBILITY_PROTECTED; | |
1946 else | |
1947 error ("unrecognized visibility value \"%s\"", arg); | |
1948 } | |
1949 break; | |
1950 | |
1951 case OPT_fvpt: | |
1952 flag_value_profile_transformations_set = true; | |
1953 break; | |
1954 | |
1955 case OPT_frandom_seed: | |
1956 /* The real switch is -fno-random-seed. */ | |
1957 if (value) | |
1958 return 0; | |
1959 set_random_seed (NULL); | |
1960 break; | |
1961 | |
1962 case OPT_frandom_seed_: | |
1963 set_random_seed (arg); | |
1964 break; | |
1965 | |
1966 case OPT_fselective_scheduling: | |
1967 case OPT_fselective_scheduling2: | |
1968 sel_sched_switch_set = true; | |
1969 break; | |
1970 | |
1971 case OPT_fsched_verbose_: | |
1972 #ifdef INSN_SCHEDULING | |
1973 fix_sched_param ("verbose", arg); | |
1974 break; | |
1975 #else | |
1976 return 0; | |
1977 #endif | |
1978 | |
1979 case OPT_fsched_stalled_insns_: | |
1980 flag_sched_stalled_insns = value; | |
1981 if (flag_sched_stalled_insns == 0) | |
1982 flag_sched_stalled_insns = -1; | |
1983 break; | |
1984 | |
1985 case OPT_fsched_stalled_insns_dep_: | |
1986 flag_sched_stalled_insns_dep = value; | |
1987 break; | |
1988 | |
1989 case OPT_fstack_check_: | |
1990 if (!strcmp (arg, "no")) | |
1991 flag_stack_check = NO_STACK_CHECK; | |
1992 else if (!strcmp (arg, "generic")) | |
1993 /* This is the old stack checking method. */ | |
1994 flag_stack_check = STACK_CHECK_BUILTIN | |
1995 ? FULL_BUILTIN_STACK_CHECK | |
1996 : GENERIC_STACK_CHECK; | |
1997 else if (!strcmp (arg, "specific")) | |
1998 /* This is the new stack checking method. */ | |
1999 flag_stack_check = STACK_CHECK_BUILTIN | |
2000 ? FULL_BUILTIN_STACK_CHECK | |
2001 : STACK_CHECK_STATIC_BUILTIN | |
2002 ? STATIC_BUILTIN_STACK_CHECK | |
2003 : GENERIC_STACK_CHECK; | |
2004 else | |
2005 warning (0, "unknown stack check parameter \"%s\"", arg); | |
2006 break; | |
2007 | |
2008 case OPT_fstack_check: | |
2009 /* This is the same as the "specific" mode above. */ | |
2010 if (value) | |
2011 flag_stack_check = STACK_CHECK_BUILTIN | |
2012 ? FULL_BUILTIN_STACK_CHECK | |
2013 : STACK_CHECK_STATIC_BUILTIN | |
2014 ? STATIC_BUILTIN_STACK_CHECK | |
2015 : GENERIC_STACK_CHECK; | |
2016 else | |
2017 flag_stack_check = NO_STACK_CHECK; | |
2018 break; | |
2019 | |
2020 case OPT_fstack_limit: | |
2021 /* The real switch is -fno-stack-limit. */ | |
2022 if (value) | |
2023 return 0; | |
2024 stack_limit_rtx = NULL_RTX; | |
2025 break; | |
2026 | |
2027 case OPT_fstack_limit_register_: | |
2028 { | |
2029 int reg = decode_reg_name (arg); | |
2030 if (reg < 0) | |
2031 error ("unrecognized register name \"%s\"", arg); | |
2032 else | |
2033 stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
2034 } | |
2035 break; | |
2036 | |
2037 case OPT_fstack_limit_symbol_: | |
2038 stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (arg)); | |
2039 break; | |
2040 | |
2041 case OPT_ftree_vectorizer_verbose_: | |
2042 vect_set_verbosity_level (arg); | |
2043 break; | |
2044 | |
2045 case OPT_ftls_model_: | |
2046 if (!strcmp (arg, "global-dynamic")) | |
2047 flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
2048 else if (!strcmp (arg, "local-dynamic")) | |
2049 flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
2050 else if (!strcmp (arg, "initial-exec")) | |
2051 flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
2052 else if (!strcmp (arg, "local-exec")) | |
2053 flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
2054 else | |
2055 warning (0, "unknown tls-model \"%s\"", arg); | |
2056 break; | |
2057 | |
2058 case OPT_fira_algorithm_: | |
2059 if (!strcmp (arg, "CB")) | |
2060 flag_ira_algorithm = IRA_ALGORITHM_CB; | |
2061 else if (!strcmp (arg, "priority")) | |
2062 flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
2063 else | |
2064 warning (0, "unknown ira algorithm \"%s\"", arg); | |
2065 break; | |
2066 | |
2067 case OPT_fira_region_: | |
2068 if (!strcmp (arg, "one")) | |
2069 flag_ira_region = IRA_REGION_ONE; | |
2070 else if (!strcmp (arg, "all")) | |
2071 flag_ira_region = IRA_REGION_ALL; | |
2072 else if (!strcmp (arg, "mixed")) | |
2073 flag_ira_region = IRA_REGION_MIXED; | |
2074 else | |
2075 warning (0, "unknown ira region \"%s\"", arg); | |
2076 break; | |
2077 | |
2078 case OPT_fira_verbose_: | |
2079 flag_ira_verbose = value; | |
2080 break; | |
2081 | |
2082 case OPT_ftracer: | |
2083 flag_tracer_set = true; | |
2084 break; | |
2085 | |
2086 case OPT_fipa_cp: | |
2087 flag_ipa_cp_set = true; | |
2088 break; | |
2089 | |
2090 case OPT_fipa_cp_clone: | |
2091 flag_ipa_cp_clone_set = true; | |
2092 break; | |
2093 | |
2094 case OPT_fpredictive_commoning: | |
2095 flag_predictive_commoning_set = true; | |
2096 break; | |
2097 | |
2098 case OPT_funswitch_loops: | |
2099 flag_unswitch_loops_set = true; | |
2100 break; | |
2101 | |
2102 case OPT_fgcse_after_reload: | |
2103 flag_gcse_after_reload_set = true; | |
2104 break; | |
2105 | |
2106 case OPT_funroll_loops: | |
2107 flag_unroll_loops_set = true; | |
2108 break; | |
2109 | |
2110 case OPT_g: | |
2111 set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg); | |
2112 break; | |
2113 | |
2114 case OPT_gcoff: | |
2115 set_debug_level (SDB_DEBUG, false, arg); | |
2116 break; | |
2117 | |
55
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2118 case OPT_gdwarf_: |
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2119 if (value < 2 || value > 4) |
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2120 error ("dwarf version %d is not supported", value); |
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2121 else |
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|
2122 dwarf_version = value; |
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2123 set_debug_level (DWARF2_DEBUG, false, ""); |
0 | 2124 break; |
2125 | |
2126 case OPT_ggdb: | |
2127 set_debug_level (NO_DEBUG, 2, arg); | |
2128 break; | |
2129 | |
2130 case OPT_gstabs: | |
2131 case OPT_gstabs_: | |
2132 set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg); | |
2133 break; | |
2134 | |
2135 case OPT_gvms: | |
2136 set_debug_level (VMS_DEBUG, false, arg); | |
2137 break; | |
2138 | |
2139 case OPT_gxcoff: | |
2140 case OPT_gxcoff_: | |
2141 set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg); | |
2142 break; | |
2143 | |
2144 case OPT_o: | |
2145 asm_file_name = arg; | |
2146 break; | |
2147 | |
2148 case OPT_pedantic_errors: | |
2149 flag_pedantic_errors = pedantic = 1; | |
2150 break; | |
2151 | |
63
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|
2152 case OPT_fwhopr: |
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|
2153 flag_whopr = value; |
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diff
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|
2154 break; |
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|
2155 |
55
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|
2156 case OPT_fsee: |
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diff
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|
2157 case OPT_fcse_skip_blocks: |
0 | 2158 case OPT_floop_optimize: |
2159 case OPT_frerun_loop_opt: | |
63
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|
2160 case OPT_fsched2_use_traces: |
0 | 2161 case OPT_fstrength_reduce: |
2162 case OPT_ftree_store_copy_prop: | |
2163 case OPT_fforce_addr: | |
2164 case OPT_ftree_salias: | |
2165 case OPT_ftree_store_ccp: | |
63
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|
2166 case OPT_Wunreachable_code: |
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|
2167 case OPT_fargument_alias: |
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|
2168 case OPT_fargument_noalias: |
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2169 case OPT_fargument_noalias_anything: |
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|
2170 case OPT_fargument_noalias_global: |
0 | 2171 /* These are no-ops, preserved for backward compatibility. */ |
2172 break; | |
2173 | |
55
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|
2174 case OPT_fuse_linker_plugin: |
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2175 /* No-op. Used by the driver and passed to us because it starts with f.*/ |
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|
2176 break; |
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2177 |
0 | 2178 default: |
2179 /* If the flag was handled in a standard way, assume the lack of | |
2180 processing here is intentional. */ | |
2181 gcc_assert (cl_options[scode].flag_var); | |
2182 break; | |
2183 } | |
2184 | |
2185 return 1; | |
2186 } | |
2187 | |
2188 /* Handle --param NAME=VALUE. */ | |
2189 static void | |
2190 handle_param (const char *carg) | |
2191 { | |
2192 char *equal, *arg; | |
2193 int value; | |
2194 | |
2195 arg = xstrdup (carg); | |
2196 equal = strchr (arg, '='); | |
2197 if (!equal) | |
2198 error ("%s: --param arguments should be of the form NAME=VALUE", arg); | |
2199 else | |
2200 { | |
2201 value = integral_argument (equal + 1); | |
2202 if (value == -1) | |
2203 error ("invalid --param value %qs", equal + 1); | |
2204 else | |
2205 { | |
2206 *equal = '\0'; | |
2207 set_param_value (arg, value); | |
2208 } | |
2209 } | |
2210 | |
2211 free (arg); | |
2212 } | |
2213 | |
55
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2214 /* Used to set the level of strict aliasing warnings, |
0 | 2215 when no level is specified (i.e., when -Wstrict-aliasing, and not |
2216 -Wstrict-aliasing=level was given). | |
2217 ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
2218 and 0 otherwise. After calling this function, wstrict_aliasing will be | |
2219 set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
2220 void | |
2221 set_Wstrict_aliasing (int onoff) | |
2222 { | |
2223 gcc_assert (onoff == 0 || onoff == 1); | |
2224 if (onoff != 0) | |
2225 warn_strict_aliasing = 3; | |
2226 else | |
2227 warn_strict_aliasing = 0; | |
2228 } | |
2229 | |
2230 /* The following routines are useful in setting all the flags that | |
2231 -ffast-math and -fno-fast-math imply. */ | |
2232 void | |
2233 set_fast_math_flags (int set) | |
2234 { | |
2235 flag_unsafe_math_optimizations = set; | |
2236 set_unsafe_math_optimizations_flags (set); | |
2237 flag_finite_math_only = set; | |
2238 flag_errno_math = !set; | |
2239 if (set) | |
2240 { | |
2241 flag_signaling_nans = 0; | |
2242 flag_rounding_math = 0; | |
2243 flag_cx_limited_range = 1; | |
2244 } | |
2245 } | |
2246 | |
55
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2247 /* When -funsafe-math-optimizations is set the following |
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2248 flags are set as well. */ |
0 | 2249 void |
2250 set_unsafe_math_optimizations_flags (int set) | |
2251 { | |
2252 flag_trapping_math = !set; | |
2253 flag_signed_zeros = !set; | |
2254 flag_associative_math = set; | |
2255 flag_reciprocal_math = set; | |
2256 } | |
2257 | |
2258 /* Return true iff flags are set as if -ffast-math. */ | |
2259 bool | |
2260 fast_math_flags_set_p (void) | |
2261 { | |
2262 return (!flag_trapping_math | |
2263 && flag_unsafe_math_optimizations | |
2264 && flag_finite_math_only | |
2265 && !flag_signed_zeros | |
2266 && !flag_errno_math); | |
2267 } | |
2268 | |
2269 /* Return true iff flags are set as if -ffast-math but using the flags stored | |
2270 in the struct cl_optimization structure. */ | |
2271 bool | |
2272 fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
2273 { | |
2274 return (!opt->flag_trapping_math | |
2275 && opt->flag_unsafe_math_optimizations | |
2276 && opt->flag_finite_math_only | |
2277 && !opt->flag_signed_zeros | |
2278 && !opt->flag_errno_math); | |
2279 } | |
2280 | |
2281 /* Handle a debug output -g switch. EXTENDED is true or false to support | |
2282 extended output (2 is special and means "-ggdb" was given). */ | |
2283 static void | |
2284 set_debug_level (enum debug_info_type type, int extended, const char *arg) | |
2285 { | |
2286 static bool type_explicit; | |
2287 | |
2288 use_gnu_debug_info_extensions = extended; | |
2289 | |
2290 if (type == NO_DEBUG) | |
2291 { | |
2292 if (write_symbols == NO_DEBUG) | |
2293 { | |
2294 write_symbols = PREFERRED_DEBUGGING_TYPE; | |
2295 | |
2296 if (extended == 2) | |
2297 { | |
2298 #ifdef DWARF2_DEBUGGING_INFO | |
2299 write_symbols = DWARF2_DEBUG; | |
2300 #elif defined DBX_DEBUGGING_INFO | |
2301 write_symbols = DBX_DEBUG; | |
2302 #endif | |
2303 } | |
2304 | |
2305 if (write_symbols == NO_DEBUG) | |
2306 warning (0, "target system does not support debug output"); | |
2307 } | |
2308 } | |
2309 else | |
2310 { | |
2311 /* Does it conflict with an already selected type? */ | |
2312 if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols) | |
2313 error ("debug format \"%s\" conflicts with prior selection", | |
2314 debug_type_names[type]); | |
2315 write_symbols = type; | |
2316 type_explicit = true; | |
2317 } | |
2318 | |
2319 /* A debug flag without a level defaults to level 2. */ | |
2320 if (*arg == '\0') | |
2321 { | |
2322 if (!debug_info_level) | |
55
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2323 debug_info_level = DINFO_LEVEL_NORMAL; |
0 | 2324 } |
2325 else | |
2326 { | |
55
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|
2327 int argval = integral_argument (arg); |
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2328 if (argval == -1) |
0 | 2329 error ("unrecognised debug output level \"%s\"", arg); |
55
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2330 else if (argval > 3) |
0 | 2331 error ("debug output level %s is too high", arg); |
55
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2332 else |
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2333 debug_info_level = (enum debug_info_level) argval; |
0 | 2334 } |
2335 } | |
2336 | |
2337 /* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't | |
2338 a simple on-off switch. */ | |
2339 | |
2340 int | |
2341 option_enabled (int opt_idx) | |
2342 { | |
2343 const struct cl_option *option = &(cl_options[opt_idx]); | |
2344 | |
2345 if (option->flag_var) | |
2346 switch (option->var_type) | |
2347 { | |
2348 case CLVC_BOOLEAN: | |
2349 return *(int *) option->flag_var != 0; | |
2350 | |
2351 case CLVC_EQUAL: | |
2352 return *(int *) option->flag_var == option->var_value; | |
2353 | |
2354 case CLVC_BIT_CLEAR: | |
2355 return (*(int *) option->flag_var & option->var_value) == 0; | |
2356 | |
2357 case CLVC_BIT_SET: | |
2358 return (*(int *) option->flag_var & option->var_value) != 0; | |
2359 | |
2360 case CLVC_STRING: | |
2361 break; | |
2362 } | |
2363 return -1; | |
2364 } | |
2365 | |
2366 /* Fill STATE with the current state of option OPTION. Return true if | |
2367 there is some state to store. */ | |
2368 | |
2369 bool | |
2370 get_option_state (int option, struct cl_option_state *state) | |
2371 { | |
2372 if (cl_options[option].flag_var == 0) | |
2373 return false; | |
2374 | |
2375 switch (cl_options[option].var_type) | |
2376 { | |
2377 case CLVC_BOOLEAN: | |
2378 case CLVC_EQUAL: | |
2379 state->data = cl_options[option].flag_var; | |
2380 state->size = sizeof (int); | |
2381 break; | |
2382 | |
2383 case CLVC_BIT_CLEAR: | |
2384 case CLVC_BIT_SET: | |
2385 state->ch = option_enabled (option); | |
2386 state->data = &state->ch; | |
2387 state->size = 1; | |
2388 break; | |
2389 | |
2390 case CLVC_STRING: | |
2391 state->data = *(const char **) cl_options[option].flag_var; | |
2392 if (state->data == 0) | |
2393 state->data = ""; | |
2394 state->size = strlen ((const char *) state->data) + 1; | |
2395 break; | |
2396 } | |
2397 return true; | |
2398 } | |
2399 | |
55
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|
2400 /* Set *OPTION according to VALUE and ARG. */ |
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2401 |
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|
2402 void |
63
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|
2403 set_option (int opt_index, int value, const char *arg, int kind) |
55
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2404 { |
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|
2405 const struct cl_option *option = &cl_options[opt_index]; |
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2406 |
55
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2407 if (!option->flag_var) |
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2408 return; |
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2409 |
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2410 switch (option->var_type) |
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2411 { |
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|
2412 case CLVC_BOOLEAN: |
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|
2413 *(int *) option->flag_var = value; |
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|
2414 break; |
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2415 |
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|
2416 case CLVC_EQUAL: |
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|
2417 *(int *) option->flag_var = (value |
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diff
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|
2418 ? option->var_value |
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diff
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|
2419 : !option->var_value); |
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|
2420 break; |
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2421 |
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|
2422 case CLVC_BIT_CLEAR: |
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|
2423 case CLVC_BIT_SET: |
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|
2424 if ((value != 0) == (option->var_type == CLVC_BIT_SET)) |
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|
2425 *(int *) option->flag_var |= option->var_value; |
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|
2426 else |
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|
2427 *(int *) option->flag_var &= ~option->var_value; |
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|
2428 if (option->flag_var == &target_flags) |
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|
2429 target_flags_explicit |= option->var_value; |
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diff
changeset
|
2430 break; |
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diff
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|
2431 |
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diff
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|
2432 case CLVC_STRING: |
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|
2433 *(const char **) option->flag_var = arg; |
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diff
changeset
|
2434 break; |
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diff
changeset
|
2435 } |
63
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2436 |
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2437 if ((diagnostic_t)kind != DK_UNSPECIFIED) |
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2438 diagnostic_classify_diagnostic (global_dc, opt_index, (diagnostic_t)kind); |
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2439 } |
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2440 |
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2441 |
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2442 /* Callback function, called when -Werror= enables a warning. */ |
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2443 |
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2444 static void (*warning_as_error_callback) (int) = NULL; |
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2445 |
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2446 /* Register a callback for enable_warning_as_error calls. */ |
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2447 |
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2448 void |
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2449 register_warning_as_error_callback (void (*callback) (int)) |
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2450 { |
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2451 gcc_assert (warning_as_error_callback == NULL || callback == NULL); |
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2452 warning_as_error_callback = callback; |
55
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2453 } |
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2454 |
0 | 2455 /* Enable a warning option as an error. This is used by -Werror= and |
2456 also by legacy Werror-implicit-function-declaration. */ | |
2457 | |
2458 void | |
2459 enable_warning_as_error (const char *arg, int value, unsigned int lang_mask) | |
2460 { | |
2461 char *new_option; | |
2462 int option_index; | |
2463 | |
2464 new_option = XNEWVEC (char, strlen (arg) + 2); | |
2465 new_option[0] = 'W'; | |
2466 strcpy (new_option + 1, arg); | |
2467 option_index = find_opt (new_option, lang_mask); | |
2468 if (option_index == N_OPTS) | |
2469 { | |
2470 error ("-Werror=%s: No option -%s", arg, new_option); | |
2471 } | |
2472 else | |
2473 { | |
63
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2474 const diagnostic_t kind = value ? DK_ERROR : DK_WARNING; |
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2475 |
0 | 2476 diagnostic_classify_diagnostic (global_dc, option_index, kind); |
63
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2477 if (kind == DK_ERROR) |
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2478 { |
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2479 const struct cl_option * const option = cl_options + option_index; |
55
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2480 |
63
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2481 /* -Werror=foo implies -Wfoo. */ |
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2482 if (option->var_type == CLVC_BOOLEAN) |
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2483 handle_option (option_index, value, arg, lang_mask, (int)kind); |
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2484 |
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2485 if (warning_as_error_callback) |
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2486 warning_as_error_callback (option_index); |
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2487 } |
0 | 2488 } |
2489 free (new_option); | |
2490 } |