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Commit | Line | Data |
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d7b42618 | 1 | ; Options for the language- and target-independent parts of the compiler. |
50431bc4 | 2 | |
d1e082c2 | 3 | ; Copyright (C) 2003-2013 Free Software Foundation, Inc. |
d7b42618 NB |
4 | ; |
5 | ; This file is part of GCC. | |
6 | ; | |
7 | ; GCC is free software; you can redistribute it and/or modify it under | |
8 | ; the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 9 | ; Software Foundation; either version 3, or (at your option) any later |
d7b42618 | 10 | ; version. |
c22cacf3 | 11 | ; |
d7b42618 NB |
12 | ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | ; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | ; for more details. | |
c22cacf3 | 16 | ; |
d7b42618 | 17 | ; You should have received a copy of the GNU General Public License |
9dcd6f09 NC |
18 | ; along with GCC; see the file COPYING3. If not see |
19 | ; <http://www.gnu.org/licenses/>. | |
d7b42618 | 20 | |
71733172 | 21 | ; See the GCC internals manual (options.texi) for a description of this file's format. |
d7b42618 NB |
22 | |
23 | ; Please try to keep this file in ASCII collating order. | |
24 | ||
e90afde6 JM |
25 | Variable |
26 | int target_flags | |
27 | ||
46625112 JM |
28 | Variable |
29 | int optimize | |
30 | ||
31 | Variable | |
32 | int optimize_size | |
33 | ||
bf7a7185 RG |
34 | Variable |
35 | int optimize_debug | |
36 | ||
0a8134ca JM |
37 | ; Not used directly to control optimizations, only to save -Ofast |
38 | ; setting for "optimize" attributes. | |
39 | Variable | |
40 | int optimize_fast | |
41 | ||
a7d0d30f JM |
42 | ; True if this is the lto front end. This is used to disable gimple |
43 | ; generation and lowering passes that are normally run on the output | |
44 | ; of a front end. These passes must be bypassed for lto since they | |
45 | ; have already been done before the gimple was written. | |
46 | Variable | |
47 | bool in_lto_p = false | |
48 | ||
a75bfaa6 JM |
49 | ; 0 means straightforward implementation of complex divide acceptable. |
50 | ; 1 means wide ranges of inputs must work for complex divide. | |
51 | ; 2 means C99-like requirements for complex multiply and divide. | |
52 | Variable | |
53 | int flag_complex_method = 1 | |
54 | ||
55 | ; Nonzero if subexpressions must be evaluated from left-to-right. | |
56 | Variable | |
57 | int flag_evaluation_order = 0 | |
58 | ||
a75bfaa6 JM |
59 | ; Language specific warning pass for unused results. |
60 | Variable | |
61 | bool flag_warn_unused_result = false | |
62 | ||
48476d13 JM |
63 | Variable |
64 | int *param_values | |
65 | ||
d5478783 JM |
66 | ; Nonzero if we should write GIMPLE bytecode for link-time optimization. |
67 | Variable | |
68 | int flag_generate_lto | |
69 | ||
70 | ; True to warn about any objects definitions whose size is larger | |
71 | ; than N bytes. Also want about function definitions whose returned | |
72 | ; values are larger than N bytes, where N is 'larger_than_size'. | |
73 | Variable | |
74 | bool warn_larger_than | |
75 | ||
76 | Variable | |
77 | HOST_WIDE_INT larger_than_size | |
78 | ||
79 | ; True to warn about any function whose frame size is larger | |
80 | ; than N bytes. | |
81 | Variable | |
82 | bool warn_frame_larger_than | |
83 | ||
84 | Variable | |
85 | HOST_WIDE_INT frame_larger_than_size | |
86 | ||
87 | ; Nonzero means we should be saving declaration info into a .X file. | |
88 | Variable | |
89 | int flag_gen_aux_info = 0 | |
90 | ||
91 | ; Nonzero if we are compiling code for a shared library, zero for | |
92 | ; executable. | |
93 | Variable | |
94 | int flag_shlib | |
95 | ||
6a1f6c9c JM |
96 | ; These two are really VEC(char_p,heap) *. |
97 | ||
98 | Variable | |
99 | void *flag_instrument_functions_exclude_functions | |
100 | ||
101 | Variable | |
102 | void *flag_instrument_functions_exclude_files | |
103 | ||
69ccdddb JM |
104 | ; Generic structs (e.g. templates not explicitly specialized) |
105 | ; may not have a compilation unit associated with them, and so | |
106 | ; may need to be treated differently from ordinary structs. | |
107 | ; | |
108 | ; Structs only handled by reference (indirectly), will also usually | |
109 | ; not need as much debugging information. | |
110 | ||
111 | Variable | |
112 | enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
113 | ||
114 | Variable | |
115 | enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
116 | ||
0576d21f JM |
117 | ; True if we should exit after parsing options. |
118 | Variable | |
119 | bool exit_after_options | |
120 | ||
121 | ; Type(s) of debugging information we are producing (if any). See | |
122 | ; flag-types.h for the definitions of the different possible types of | |
123 | ; debugging information. | |
124 | Variable | |
125 | enum debug_info_type write_symbols = NO_DEBUG | |
126 | ||
127 | ; Level of debugging information we are producing. See flag-types.h | |
128 | ; for the definitions of the different possible levels. | |
129 | Variable | |
130 | enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE | |
131 | ||
132 | ; Nonzero means use GNU-only extensions in the generated symbolic | |
133 | ; debugging information. Currently, this only has an effect when | |
134 | ; write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. | |
135 | Variable | |
136 | bool use_gnu_debug_info_extensions | |
137 | ||
299404a1 JM |
138 | ; Original value of maximum field alignment in bytes, specified via |
139 | ; -fpack-struct=<value>. | |
140 | Variable | |
141 | unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT | |
142 | ||
5e471ea6 JM |
143 | ; Type of stack check. |
144 | Variable | |
145 | enum stack_check_type flag_stack_check = NO_STACK_CHECK | |
146 | ||
a11e0df4 EB |
147 | ; True if stack usage information needs to be computed. |
148 | Variable | |
149 | bool flag_stack_usage_info = false | |
150 | ||
299404a1 JM |
151 | ; -dA causes debug commentary information to be produced in |
152 | ; the generated assembly code (to make it more readable). This option | |
153 | ; is generally only of use to those who actually need to read the | |
154 | ; generated assembly code (perhaps while debugging the compiler itself). | |
155 | ; Currently, this switch is only used by dwarf2out.c; however, it is intended | |
156 | ; to be a catchall for printing debug information in the assembler file. | |
157 | Variable | |
158 | int flag_debug_asm | |
159 | ||
160 | ; -dP causes the rtl to be emitted as a comment in assembly. | |
161 | Variable | |
162 | int flag_dump_rtl_in_asm | |
163 | ||
164 | ; Whether -da was passed (used only in handle_common_deferred_options). | |
165 | Variable | |
166 | bool flag_dump_all_passed | |
167 | ||
168 | ; Other flags saying which kinds of debugging dump have been requested. | |
169 | ||
170 | Variable | |
171 | int rtl_dump_and_exit | |
172 | ||
173 | Variable | |
174 | int flag_print_asm_name | |
175 | ||
a803773f JM |
176 | ; Name of top-level original source file (what was input to cpp). |
177 | ; This comes from the #-command at the beginning of the actual input. | |
178 | ; If there isn't any there, then this is the cc1 input file name. | |
179 | Variable | |
180 | const char *main_input_filename | |
181 | ||
182 | ; Pointer to base name in main_input_filename, with directories and a | |
183 | ; single final extension removed, and the length of this base | |
184 | ; name. | |
185 | ||
186 | Variable | |
187 | const char *main_input_basename | |
188 | ||
189 | Variable | |
190 | int main_input_baselength | |
191 | ||
299404a1 JM |
192 | ; Which options have been printed by --help. |
193 | Variable | |
194 | char *help_printed | |
195 | ||
e6d4b984 JM |
196 | ; Which enums have been printed by --help. 0 = not printed, no |
197 | ; relevant options seen, 1 = relevant option seen, not yet printed, 2 | |
198 | ; = printed. | |
199 | Variable | |
200 | char *help_enum_printed | |
201 | ||
299404a1 JM |
202 | ; The number of columns for --help output. |
203 | Variable | |
204 | unsigned int help_columns | |
205 | ||
206 | ; Whether this options structure has been through finish_options | |
207 | Variable | |
208 | bool flag_opts_finished | |
209 | ||
603349bf JM |
210 | ### |
211 | Driver | |
212 | ||
e200444e JM |
213 | -assemble |
214 | Driver Alias(S) | |
215 | ||
216 | -compile | |
217 | Driver Alias(c) | |
218 | ||
219 | -coverage | |
220 | Driver Alias(coverage) | |
221 | ||
222 | -debug | |
223 | Common Alias(g) | |
224 | ||
225 | -dump | |
226 | Common Separate Alias(d) | |
227 | ||
228 | -dump= | |
229 | Common Joined Alias(d) | |
230 | ||
231 | -dumpbase | |
232 | Common Separate Alias(dumpbase) | |
233 | ||
234 | -dumpdir | |
235 | Common Separate Alias(dumpdir) | |
236 | ||
237 | -entry | |
238 | Driver Separate Alias(e) | |
239 | ||
240 | -entry= | |
241 | Driver Joined Alias(e) | |
242 | ||
243 | -extra-warnings | |
244 | Common Warning Alias(Wextra) | |
245 | ||
246 | -for-assembler | |
247 | Driver Separate Alias(Xassembler) | |
248 | ||
249 | -for-assembler= | |
250 | Driver JoinedOrMissing Alias(Xassembler) | |
251 | ||
252 | -for-linker | |
253 | Driver Separate Alias(Xlinker) | |
254 | ||
255 | -for-linker= | |
256 | Driver JoinedOrMissing Alias(Xlinker) | |
257 | ||
258 | -force-link | |
259 | Driver Separate Alias(u) | |
260 | ||
261 | -force-link= | |
262 | Driver Joined Alias(u) | |
263 | ||
d185d268 | 264 | -help |
e200444e | 265 | Common Driver Var(help_flag) |
cf03fd63 | 266 | Display this information |
d185d268 | 267 | |
c662432e | 268 | -help= |
603349bf | 269 | Common Driver Report Joined |
c662432e | 270 | --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params |
903caebf | 271 | |
e200444e JM |
272 | -language |
273 | Driver Separate Alias(x) | |
274 | ||
275 | -language= | |
276 | Driver Joined Alias(x) | |
277 | ||
278 | -library-directory | |
279 | Driver Separate Alias(L) | |
280 | ||
281 | -library-directory= | |
282 | Driver Joined Alias(L) | |
283 | ||
284 | -no-canonical-prefixes | |
285 | Driver Alias(no-canonical-prefixes) | |
286 | ||
287 | -no-standard-libraries | |
288 | Driver Alias(nostdlib) | |
289 | ||
28b4fc51 JM |
290 | -no-sysroot-suffix |
291 | Driver Var(no_sysroot_suffix) | |
292 | ||
e200444e JM |
293 | -no-warnings |
294 | Common Alias(w) | |
295 | ||
296 | -optimize | |
297 | Common Alias(O) | |
298 | ||
299 | -output | |
300 | Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) | |
301 | ||
302 | -output= | |
303 | Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) | |
304 | ||
305 | -pass-exit-codes | |
306 | Driver Alias(pass-exit-codes) | |
307 | ||
308 | -pedantic | |
c1771a20 | 309 | Common Alias(Wpedantic) |
e200444e JM |
310 | |
311 | -pedantic-errors | |
312 | Common Alias(pedantic-errors) | |
313 | ||
314 | -pie | |
5460e1fc | 315 | Driver Alias(pie) |
e200444e JM |
316 | |
317 | -pipe | |
318 | Driver Alias(pipe) | |
319 | ||
320 | -prefix | |
321 | Driver Separate Alias(B) | |
322 | ||
323 | -prefix= | |
324 | Driver JoinedOrMissing Alias(B) | |
325 | ||
326 | -preprocess | |
327 | Driver Alias(E) | |
328 | ||
329 | -print-file-name | |
330 | Driver Separate Alias(print-file-name=) | |
331 | ||
332 | -print-file-name= | |
333 | Driver JoinedOrMissing Alias(print-file-name=) | |
334 | ||
335 | -print-libgcc-file-name | |
336 | Driver Alias(print-libgcc-file-name) | |
337 | ||
338 | -print-multi-directory | |
339 | Driver Alias(print-multi-directory) | |
340 | ||
341 | -print-multi-lib | |
342 | Driver Alias(print-multi-lib) | |
343 | ||
344 | -print-multi-os-directory | |
345 | Driver Alias(print-multi-os-directory) | |
346 | ||
e0cdc09f MK |
347 | -print-multiarch |
348 | Driver Alias(print-multiarch) | |
349 | ||
e200444e JM |
350 | -print-prog-name |
351 | Driver Separate Alias(print-prog-name=) | |
352 | ||
353 | -print-prog-name= | |
354 | Driver JoinedOrMissing Alias(print-prog-name=) | |
355 | ||
356 | -print-search-dirs | |
357 | Driver Alias(print-search-dirs) | |
358 | ||
359 | -print-sysroot | |
360 | Driver Alias(print-sysroot) | |
361 | ||
362 | -print-sysroot-headers-suffix | |
363 | Driver Alias(print-sysroot-headers-suffix) | |
364 | ||
365 | -profile | |
366 | Common Alias(p) | |
367 | ||
368 | -save-temps | |
369 | Driver Alias(save-temps) | |
370 | ||
371 | -shared | |
5460e1fc | 372 | Driver Alias(shared) |
e200444e JM |
373 | |
374 | -specs | |
375 | Driver Separate Alias(specs=) | |
376 | ||
377 | -specs= | |
378 | Driver Joined Alias(specs=) | |
379 | ||
380 | -static | |
381 | Driver Alias(static) | |
382 | ||
383 | -symbolic | |
384 | Driver Alias(symbolic) | |
385 | ||
d185d268 | 386 | -target-help |
603349bf | 387 | Common Driver |
c662432e NC |
388 | Alias for --help=target |
389 | ||
e200444e JM |
390 | -time |
391 | Driver Alias(time) | |
392 | ||
393 | -verbose | |
394 | Driver Alias(v) | |
395 | ||
396 | ;; The driver used to convert options such as --help into forms such | |
397 | ;; as -fhelp; the following four entries are for compatibility with | |
398 | ;; any direct uses of those (undocumented) -f forms | |
c662432e | 399 | fhelp |
e200444e | 400 | Common Driver Alias(-help) |
c662432e NC |
401 | |
402 | fhelp= | |
e200444e | 403 | Common Driver Joined Alias(-help=) |
c662432e NC |
404 | |
405 | ftarget-help | |
e200444e | 406 | Common Driver Alias(-target-help) |
c662432e | 407 | |
41fd0f9b | 408 | fversion |
e200444e | 409 | Common Driver Alias(-version) |
41fd0f9b | 410 | |
c662432e NC |
411 | -param |
412 | Common Separate | |
413 | --param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters | |
d185d268 | 414 | |
e200444e JM |
415 | -param= |
416 | Common Joined Alias(-param) | |
417 | ||
418 | -sysroot | |
419 | Driver Separate Alias(-sysroot=) | |
420 | ||
603349bf JM |
421 | -sysroot= |
422 | Driver JoinedOrMissing | |
423 | ||
d185d268 | 424 | -version |
603349bf JM |
425 | Common Driver |
426 | ||
427 | B | |
428 | Driver Joined Separate | |
429 | ||
430 | E | |
431 | Driver | |
d185d268 | 432 | |
d9d16a19 JM |
433 | L |
434 | Driver Joined Separate | |
435 | ||
dd9f93dc JM |
436 | N |
437 | Driver | |
438 | ||
903caebf | 439 | O |
ab442df7 | 440 | Common JoinedOrMissing Optimization |
cf03fd63 | 441 | -O<number> Set optimization level to <number> |
903caebf NB |
442 | |
443 | Os | |
ab442df7 | 444 | Common Optimization |
cf03fd63 | 445 | Optimize for space rather than speed |
903caebf | 446 | |
be6d3f0e RG |
447 | Ofast |
448 | Common Optimization | |
449 | Optimize for speed disregarding exact standards compliance | |
450 | ||
bf7a7185 RG |
451 | Og |
452 | Common Optimization | |
453 | Optimize for debugging experience rather than speed or size | |
454 | ||
dd9f93dc JM |
455 | Q |
456 | Driver | |
457 | ||
458 | Qn | |
459 | Driver Negative(Qy) | |
460 | ||
461 | Qy | |
462 | Driver Negative(Qn) | |
463 | ||
6d721f67 JM |
464 | R |
465 | Driver Joined Separate | |
466 | ||
603349bf JM |
467 | S |
468 | Driver | |
469 | ||
6d721f67 JM |
470 | T |
471 | Driver Joined Separate | |
472 | ||
473 | Tbss | |
474 | Driver Separate | |
475 | ||
e69d7376 JM |
476 | Tbss= |
477 | Driver Joined | |
478 | ||
6d721f67 JM |
479 | Tdata |
480 | Driver Separate | |
481 | ||
e69d7376 JM |
482 | Tdata= |
483 | Driver Joined | |
484 | ||
6d721f67 JM |
485 | Ttext |
486 | Driver Separate | |
487 | ||
e69d7376 JM |
488 | Ttext= |
489 | Driver Joined | |
490 | ||
903caebf | 491 | W |
5de8299c | 492 | Common RejectNegative Warning Alias(Wextra) |
28786366 | 493 | This switch is deprecated; use -Wextra instead |
903caebf | 494 | |
603349bf JM |
495 | Wa, |
496 | Driver JoinedOrMissing | |
497 | ||
498 | Wl, | |
499 | Driver JoinedOrMissing | |
500 | ||
501 | Wp, | |
502 | Driver JoinedOrMissing | |
503 | ||
e01cc6dc | 504 | Waggregate-return |
c662432e | 505 | Common Var(warn_aggregate_return) Warning |
28786366 | 506 | Warn about returning structures, unions or arrays |
e01cc6dc | 507 | |
fbd28bc3 JJ |
508 | Waggressive-loop-optimizations |
509 | Common Var(warn_aggressive_loop_optimizations) Init(1) Warning | |
510 | Warn if a loop with constant number of iterations triggers undefined behavior | |
511 | ||
590b1f2d | 512 | Warray-bounds |
21af5cdf | 513 | Common Var(warn_array_bounds) Warning |
590b1f2d DM |
514 | Warn if an array is accessed out of bounds |
515 | ||
5c498b10 | 516 | Wattributes |
c662432e | 517 | Common Var(warn_attributes) Init(1) Warning |
5c498b10 DD |
518 | Warn about inappropriate attribute usage |
519 | ||
e01cc6dc | 520 | Wcast-align |
c662432e | 521 | Common Var(warn_cast_align) Warning |
28786366 | 522 | Warn about pointer casts which increase alignment |
e01cc6dc | 523 | |
87cf0651 SB |
524 | Wcpp |
525 | Common Var(warn_cpp) Init(1) Warning | |
526 | Warn when a #warning directive is encountered | |
527 | ||
e01cc6dc | 528 | Wdeprecated-declarations |
c662432e | 529 | Common Var(warn_deprecated_decl) Init(1) Warning |
28786366 | 530 | Warn about uses of __attribute__((deprecated)) declarations |
e01cc6dc NB |
531 | |
532 | Wdisabled-optimization | |
c662432e | 533 | Common Var(warn_disabled_optimization) Warning |
28786366 | 534 | Warn when an optimization pass is disabled |
e01cc6dc NB |
535 | |
536 | Werror | |
50431bc4 | 537 | Common Var(warnings_are_errors) |
28786366 | 538 | Treat all warnings as errors |
e01cc6dc | 539 | |
79cf5994 DD |
540 | Werror= |
541 | Common Joined | |
542 | Treat specified warning as error | |
543 | ||
903caebf | 544 | Wextra |
62a67c94 | 545 | Common Var(extra_warnings) Warning |
cf03fd63 | 546 | Print extra (possibly unwanted) warnings |
903caebf | 547 | |
c65a01af | 548 | Wfatal-errors |
50431bc4 | 549 | Common Var(flag_fatal_errors) |
c65a01af RG |
550 | Exit on the first error occurred |
551 | ||
a214518f SP |
552 | Wframe-larger-than= |
553 | Common RejectNegative Joined UInteger | |
f94e1d66 | 554 | -Wframe-larger-than=<number> Warn if a function's stack frame requires more than <number> bytes |
a214518f | 555 | |
a3a704a4 MH |
556 | Wfree-nonheap-object |
557 | Common Var(warn_free_nonheap_object) Init(1) Warning | |
558 | Warn when attempting to free a non-heap object | |
559 | ||
e01cc6dc | 560 | Winline |
c662432e | 561 | Common Var(warn_inline) Warning |
28786366 | 562 | Warn when an inlined function cannot be inlined |
e01cc6dc | 563 | |
86951993 AM |
564 | Winvalid-memory-model |
565 | Common Var(warn_invalid_memory_model) Init(1) Warning | |
566 | Warn when an atomic memory model parameter is known to be outside the valid range. | |
567 | ||
e01cc6dc | 568 | Wlarger-than- |
5de8299c | 569 | Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) |
e8fc888d MLI |
570 | |
571 | Wlarger-than= | |
572 | Common RejectNegative Joined UInteger Warning | |
573 | -Wlarger-than=<number> Warn if an object is larger than <number> bytes | |
e01cc6dc | 574 | |
f9cc1a70 | 575 | Wunsafe-loop-optimizations |
c662432e | 576 | Common Var(warn_unsafe_loop_optimizations) Warning |
f9cc1a70 PB |
577 | Warn if the loop cannot be optimized due to nontrivial assumptions. |
578 | ||
e01cc6dc | 579 | Wmissing-noreturn |
94ee6979 | 580 | Common Alias(Wsuggest-attribute=noreturn) |
e01cc6dc | 581 | |
71834ad3 | 582 | Woverflow |
c662432e | 583 | Common Var(warn_overflow) Init(1) Warning |
71834ad3 RS |
584 | Warn about overflow in arithmetic expressions |
585 | ||
e01cc6dc | 586 | Wpacked |
c662432e | 587 | Common Var(warn_packed) Warning |
28786366 | 588 | Warn when the packed attribute has no effect on struct layout |
e01cc6dc NB |
589 | |
590 | Wpadded | |
c662432e | 591 | Common Var(warn_padded) Warning |
28786366 | 592 | Warn when padding is required to align structure members |
e01cc6dc | 593 | |
c1771a20 MLI |
594 | Wpedantic |
595 | Common Var(pedantic) Warning | |
596 | Issue warnings needed for strict compliance to the standard | |
597 | ||
e01cc6dc | 598 | Wshadow |
c662432e | 599 | Common Var(warn_shadow) Warning |
28786366 | 600 | Warn when one local variable shadows another |
e01cc6dc | 601 | |
7d69de61 | 602 | Wstack-protector |
c662432e | 603 | Common Var(warn_stack_protect) Warning |
7d69de61 RH |
604 | Warn when not issuing stack smashing protection for some reason |
605 | ||
a11e0df4 EB |
606 | Wstack-usage= |
607 | Common Joined RejectNegative UInteger Var(warn_stack_usage) Init(-1) Warning | |
608 | Warn if stack usage might be larger than specified amount | |
609 | ||
e01cc6dc | 610 | Wstrict-aliasing |
c662432e | 611 | Common Warning |
28786366 | 612 | Warn about code which might break strict aliasing rules |
e01cc6dc | 613 | |
5399d643 | 614 | Wstrict-aliasing= |
65d4f2cd | 615 | Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Warning |
5399d643 JW |
616 | Warn about code which might break strict aliasing rules |
617 | ||
6ac01510 | 618 | Wstrict-overflow |
21af5cdf | 619 | Common Warning |
6ac01510 ILT |
620 | Warn about optimizations that assume that signed overflow is undefined |
621 | ||
622 | Wstrict-overflow= | |
65d4f2cd | 623 | Common Joined RejectNegative UInteger Var(warn_strict_overflow) Warning |
6ac01510 ILT |
624 | Warn about optimizations that assume that signed overflow is undefined |
625 | ||
5dc16b19 MLI |
626 | Wsuggest-attribute=const |
627 | Common Var(warn_suggest_attribute_const) Warning | |
628 | Warn about functions which might be candidates for __attribute__((const)) | |
629 | ||
630 | Wsuggest-attribute=pure | |
631 | Common Var(warn_suggest_attribute_pure) Warning | |
632 | Warn about functions which might be candidates for __attribute__((pure)) | |
633 | ||
7ea6b6cf JH |
634 | Wsuggest-attribute=noreturn |
635 | Common Var(warn_suggest_attribute_noreturn) Warning | |
636 | Warn about functions which might be candidates for __attribute__((noreturn)) | |
637 | ||
e01cc6dc | 638 | Wsystem-headers |
c662432e | 639 | Common Var(warn_system_headers) Warning |
f3fdaec4 | 640 | Do not suppress warnings from system headers |
e01cc6dc | 641 | |
8ffadef9 MG |
642 | Wtrampolines |
643 | Common Var(warn_trampolines) Warning | |
644 | Warn whenever a trampoline is generated | |
645 | ||
faebccf9 | 646 | Wtype-limits |
95744782 | 647 | Common Var(warn_type_limits) Warning EnabledBy(Wextra) |
faebccf9 DN |
648 | Warn if a comparison is always true or always false due to the limited range of the data type |
649 | ||
e01cc6dc | 650 | Wuninitialized |
7d5a5747 | 651 | Common Var(warn_uninitialized) Warning EnabledBy(Wextra) |
28786366 | 652 | Warn about uninitialized automatic variables |
e01cc6dc | 653 | |
2f964ad6 | 654 | Wmaybe-uninitialized |
7d5a5747 | 655 | Common Var(warn_maybe_uninitialized) Warning EnabledBy(Wuninitialized) |
2f964ad6 XDL |
656 | Warn about maybe uninitialized automatic variables |
657 | ||
e01cc6dc | 658 | Wunreachable-code |
2d2bd949 | 659 | Common Ignore |
bc3c12a2 | 660 | Does nothing. Preserved for backward compatibility. |
e01cc6dc | 661 | |
903caebf | 662 | Wunused |
e73f7547 | 663 | Common Var(warn_unused) Init(0) Warning |
cf03fd63 | 664 | Enable all -Wunused- warnings |
903caebf | 665 | |
ebfbbdc5 | 666 | Wunused-but-set-parameter |
d919140b | 667 | Common Var(warn_unused_but_set_parameter) Warning EnabledBy(Wunused && Wextra) |
ebfbbdc5 JJ |
668 | Warn when a function parameter is only set, otherwise unused |
669 | ||
670 | Wunused-but-set-variable | |
7d5a5747 | 671 | Common Var(warn_unused_but_set_variable) Warning EnabledBy(Wunused) |
ebfbbdc5 JJ |
672 | Warn when a variable is only set, otherwise unused |
673 | ||
e01cc6dc | 674 | Wunused-function |
7d5a5747 | 675 | Common Var(warn_unused_function) Warning EnabledBy(Wunused) |
28786366 | 676 | Warn when a function is unused |
e01cc6dc NB |
677 | |
678 | Wunused-label | |
7d5a5747 | 679 | Common Var(warn_unused_label) Warning EnabledBy(Wunused) |
28786366 | 680 | Warn when a label is unused |
e01cc6dc NB |
681 | |
682 | Wunused-parameter | |
d919140b | 683 | Common Var(warn_unused_parameter) Warning EnabledBy(Wunused && Wextra) |
28786366 | 684 | Warn when a function parameter is unused |
e01cc6dc NB |
685 | |
686 | Wunused-value | |
7d5a5747 | 687 | Common Var(warn_unused_value) Warning EnabledBy(Wunused) |
28786366 | 688 | Warn when an expression value is unused |
e01cc6dc NB |
689 | |
690 | Wunused-variable | |
7d5a5747 | 691 | Common Var(warn_unused_variable) Warning EnabledBy(Wunused) |
28786366 | 692 | Warn when a variable is unused |
e01cc6dc | 693 | |
16c1c158 | 694 | Wcoverage-mismatch |
650cfcab NV |
695 | Common Var(warn_coverage_mismatch) Init(1) Warning |
696 | Warn in case profiles in -fprofile-use do not match | |
16c1c158 | 697 | |
cdbb5ba3 AS |
698 | Wvector-operation-performance |
699 | Common Var(warn_vector_operation_performance) Warning | |
700 | Warn when a vector operation is compiled outside the SIMD | |
701 | ||
603349bf JM |
702 | Xassembler |
703 | Driver Separate | |
704 | ||
705 | Xlinker | |
706 | Driver Separate | |
707 | ||
708 | Xpreprocessor | |
709 | Driver Separate | |
710 | ||
dd9f93dc JM |
711 | Z |
712 | Driver | |
713 | ||
d185d268 | 714 | aux-info |
d5478783 | 715 | Common Separate Var(aux_info_file_name) |
cf03fd63 | 716 | -aux-info <file> Emit declaration information into <file> |
d185d268 NB |
717 | |
718 | aux-info= | |
5de8299c | 719 | Common Joined Alias(aux-info) |
d185d268 NB |
720 | |
721 | auxbase | |
d5478783 | 722 | Common Separate RejectDriver Var(aux_base_name) |
d185d268 NB |
723 | |
724 | auxbase-strip | |
603349bf JM |
725 | Common Separate RejectDriver |
726 | ||
e200444e JM |
727 | coverage |
728 | Driver | |
729 | ||
603349bf JM |
730 | c |
731 | Driver | |
d185d268 NB |
732 | |
733 | d | |
734 | Common Joined | |
cf03fd63 | 735 | -d<letters> Enable dumps from specific passes of the compiler |
d185d268 NB |
736 | |
737 | dumpbase | |
d5478783 | 738 | Common Separate Var(dump_base_name) |
cf03fd63 | 739 | -dumpbase <file> Set the file basename to be used for dumps |
d185d268 | 740 | |
d7fb0a6d | 741 | dumpdir |
d5478783 | 742 | Common Separate Var(dump_dir_name) |
316fc112 | 743 | -dumpdir <dir> Set the directory name to be used for dumps |
d7fb0a6d | 744 | |
603349bf JM |
745 | dumpmachine |
746 | Driver | |
747 | ||
748 | dumpspecs | |
749 | Driver | |
750 | ||
751 | dumpversion | |
752 | Driver | |
753 | ||
e200444e JM |
754 | e |
755 | Driver Joined Separate | |
756 | ||
fa381cb2 JM |
757 | ; This option has historically been passed down to the linker by an |
758 | ; accident of a %{e*} spec, so ensure it continues to be passed down | |
759 | ; as a single option. The supported option for this purpose is | |
760 | ; -rdynamic. See PR 47390. | |
761 | export-dynamic | |
762 | Driver Undocumented | |
763 | ||
31b66477 KC |
764 | ; The version of the C++ ABI in use. The following values are allowed: |
765 | ; | |
766 | ; 0: The version of the ABI believed most conformant with the C++ ABI | |
767 | ; specification. This ABI may change as bugs are discovered and fixed. | |
768 | ; Therefore, 0 will not necessarily indicate the same ABI in different | |
769 | ; versions of G++. | |
770 | ; | |
771 | ; 1: The version of the ABI first used in G++ 3.2. | |
772 | ; | |
abfe01ce JM |
773 | ; 2: The version of the ABI first used in G++ 3.4 (and current default). |
774 | ; | |
775 | ; 3: The version of the ABI that fixes the missing underscore | |
776 | ; in template non-type arguments of pointer type. | |
777 | ; | |
778 | ; 4: The version of the ABI that introduces unambiguous mangling of | |
55af847f | 779 | ; vector types. First selectable in G++ 4.5. |
99a8d35b | 780 | ; |
67e18edb | 781 | ; 5: The version of the ABI that ignores attribute const/noreturn |
55af847f | 782 | ; in function pointer mangling, and corrects mangling of decltype and |
67e18edb | 783 | ; function parameters used in other parameters and the return type. |
55af847f | 784 | ; First selectable in G++ 4.6. |
67e18edb | 785 | ; |
4b6aaa99 JM |
786 | ; 6: The version of the ABI that doesn't promote scoped enums to int and |
787 | ; changes the mangling of template argument packs, const/static_cast, | |
788 | ; prefix ++ and --, and a class scope function used as a template | |
789 | ; argument. | |
967444bb JM |
790 | ; First selectable in G++ 4.7. |
791 | ; | |
622aac0b JM |
792 | ; 7: The version of the ABI that treats nullptr_t as a builtin type and |
793 | ; corrects the mangling of lambdas in default argument scope. | |
a3ddb738 | 794 | ; First selectable in G++ 4.8. |
0861bec8 JM |
795 | ; |
796 | ; 8: The version of the ABI that corrects the substitution behavior of | |
797 | ; function types with function-cv-qualifiers. | |
798 | ; First selectable in G++ 4.9. | |
799 | ; | |
31b66477 KC |
800 | ; Additional positive integers will be assigned as new versions of |
801 | ; the ABI become the default version of the ABI. | |
57782ad8 | 802 | fabi-version= |
fcfbd84e | 803 | Common Joined RejectNegative UInteger Var(flag_abi_version) Init(2) |
57782ad8 | 804 | |
6e616110 RB |
805 | faggressive-loop-optimizations |
806 | Common Report Var(flag_aggressive_loop_optimizations) Optimization Init(1) | |
807 | Aggressively optimize loops using language constraints | |
808 | ||
6ff3a151 | 809 | falign-functions |
ab442df7 | 810 | Common Report Var(align_functions,0) Optimization UInteger |
f3fdaec4 | 811 | Align the start of functions |
6ff3a151 | 812 | |
058de654 | 813 | falign-functions= |
d5478783 | 814 | Common RejectNegative Joined UInteger Var(align_functions) |
058de654 | 815 | |
6ff3a151 | 816 | falign-jumps |
ab442df7 | 817 | Common Report Var(align_jumps,0) Optimization UInteger |
f3fdaec4 | 818 | Align labels which are only reached by jumping |
6ff3a151 | 819 | |
058de654 | 820 | falign-jumps= |
d5478783 | 821 | Common RejectNegative Joined UInteger Var(align_jumps) |
058de654 | 822 | |
6ff3a151 | 823 | falign-labels |
ab442df7 | 824 | Common Report Var(align_labels,0) Optimization UInteger |
f3fdaec4 | 825 | Align all labels |
6ff3a151 | 826 | |
058de654 | 827 | falign-labels= |
d5478783 | 828 | Common RejectNegative Joined UInteger Var(align_labels) |
058de654 | 829 | |
6ff3a151 | 830 | falign-loops |
3020190e | 831 | Common Report Var(align_loops,0) Optimization UInteger |
f3fdaec4 | 832 | Align the start of loops |
6ff3a151 | 833 | |
058de654 | 834 | falign-loops= |
d5478783 | 835 | Common RejectNegative Joined UInteger Var(align_loops) |
058de654 | 836 | |
6ff3a151 | 837 | fargument-alias |
2d2bd949 | 838 | Common Ignore |
0d3c82d6 | 839 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
840 | |
841 | fargument-noalias | |
2d2bd949 | 842 | Common Ignore |
0d3c82d6 | 843 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
844 | |
845 | fargument-noalias-global | |
2d2bd949 | 846 | Common Ignore |
0d3c82d6 | 847 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 848 | |
0698a1d2 | 849 | fargument-noalias-anything |
2d2bd949 | 850 | Common Ignore |
0d3c82d6 | 851 | Does nothing. Preserved for backward compatibility. |
0698a1d2 | 852 | |
dde19676 | 853 | fsanitize=address |
37d6f666 WM |
854 | Common Report Var(flag_asan) |
855 | Enable AddressSanitizer, a memory error detector | |
856 | ||
32b4b7f5 DV |
857 | fsanitize=thread |
858 | Common Report Var(flag_tsan) | |
859 | Enable ThreadSanitizer, a data race detector | |
860 | ||
6ff3a151 | 861 | fasynchronous-unwind-tables |
c662432e | 862 | Common Report Var(flag_asynchronous_unwind_tables) Optimization |
f3fdaec4 | 863 | Generate unwind tables that are exact at each instruction boundary |
6ff3a151 | 864 | |
6fb5fa3c DB |
865 | fauto-inc-dec |
866 | Common Report Var(flag_auto_inc_dec) Init(1) | |
867 | Generate auto-inc/dec instructions | |
868 | ||
31b66477 KC |
869 | ; -fcheck-bounds causes gcc to generate array bounds checks. |
870 | ; For C, C++ and ObjC: defaults off. | |
871 | ; For Java: defaults to on. | |
872 | ; For Fortran: defaults to off. | |
6ff3a151 | 873 | fbounds-check |
50431bc4 | 874 | Common Report Var(flag_bounds_check) |
f3fdaec4 | 875 | Generate code to check bounds before indexing arrays |
6ff3a151 NB |
876 | |
877 | fbranch-count-reg | |
c662432e | 878 | Common Report Var(flag_branch_on_count_reg) Init(1) Optimization |
f3fdaec4 | 879 | Replace add, compare, branch with branch on count register |
6ff3a151 NB |
880 | |
881 | fbranch-probabilities | |
c662432e | 882 | Common Report Var(flag_branch_probabilities) Optimization |
f3fdaec4 | 883 | Use profiling information for branch probabilities |
6ff3a151 | 884 | |
de32c0cb | 885 | fbranch-target-load-optimize |
c662432e | 886 | Common Report Var(flag_branch_target_load_optimize) Optimization |
f3fdaec4 | 887 | Perform branch target load optimization before prologue / epilogue threading |
de32c0cb NB |
888 | |
889 | fbranch-target-load-optimize2 | |
c662432e | 890 | Common Report Var(flag_branch_target_load_optimize2) Optimization |
f3fdaec4 | 891 | Perform branch target load optimization after prologue / epilogue threading |
de32c0cb | 892 | |
1194fc79 | 893 | fbtr-bb-exclusive |
c662432e | 894 | Common Report Var(flag_btr_bb_exclusive) Optimization |
1194fc79 R |
895 | Restrict target load migration not to re-use registers in any basic block |
896 | ||
058de654 | 897 | fcall-saved- |
21bf1558 | 898 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 899 | -fcall-saved-<register> Mark <register> as being preserved across functions |
058de654 NB |
900 | |
901 | fcall-used- | |
21bf1558 | 902 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 903 | -fcall-used-<register> Mark <register> as being corrupted by function calls |
058de654 | 904 | |
31b66477 KC |
905 | ; Nonzero for -fcaller-saves: allocate values in regs that need to |
906 | ; be saved across function calls, if that produces overall better code. | |
907 | ; Optional now, so people can test it. | |
de32c0cb | 908 | fcaller-saves |
c662432e | 909 | Common Report Var(flag_caller_saves) Optimization |
f3fdaec4 | 910 | Save registers around function calls |
de32c0cb | 911 | |
3d8864c0 SP |
912 | fcheck-data-deps |
913 | Common Report Var(flag_check_data_deps) | |
914 | Compare the results of several data dependence analyzers. | |
915 | ||
ccaeeafe NC |
916 | fcombine-stack-adjustments |
917 | Common Report Var(flag_combine_stack_adjustments) Optimization | |
918 | Looks for opportunities to reduce stack adjustments and stack references. | |
919 | ||
6ff3a151 | 920 | fcommon |
c662432e | 921 | Common Report Var(flag_no_common,0) Optimization |
f3fdaec4 | 922 | Do not put uninitialized globals in the common section |
6ff3a151 | 923 | |
603349bf JM |
924 | fcompare-debug |
925 | Driver | |
926 | ; Converted by the driver to -fcompare-debug= options. | |
927 | ||
2153915d | 928 | fcompare-debug= |
603349bf | 929 | Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) |
f94e1d66 | 930 | -fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump |
2153915d AO |
931 | |
932 | fcompare-debug-second | |
5e471ea6 | 933 | Common Driver RejectNegative Var(flag_compare_debug) |
2153915d AO |
934 | Run only the second compilation of -fcompare-debug |
935 | ||
e692f276 RH |
936 | fcompare-elim |
937 | Common Report Var(flag_compare_elim_after_reload) Optimization | |
938 | Perform comparison elimination after register allocation has finished | |
939 | ||
b5b8b0ac AO |
940 | fconserve-stack |
941 | Common Var(flag_conserve_stack) Optimization | |
942 | Do not perform optimizations increasing noticeably stack usage | |
943 | ||
6ff3a151 | 944 | fcprop-registers |
c662432e | 945 | Common Report Var(flag_cprop_registers) Optimization |
f3fdaec4 | 946 | Perform a register copy-propagation optimization pass |
6ff3a151 | 947 | |
de32c0cb | 948 | fcrossjumping |
c662432e | 949 | Common Report Var(flag_crossjumping) Optimization |
f3fdaec4 | 950 | Perform cross-jumping optimization |
de32c0cb NB |
951 | |
952 | fcse-follow-jumps | |
c662432e | 953 | Common Report Var(flag_cse_follow_jumps) Optimization |
f3fdaec4 | 954 | When running CSE, follow jumps to their targets |
de32c0cb NB |
955 | |
956 | fcse-skip-blocks | |
2d2bd949 | 957 | Common Ignore |
5f39ad47 | 958 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 959 | |
c7463669 | 960 | fcx-limited-range |
5e46b0c6 | 961 | Common Report Var(flag_cx_limited_range) Optimization SetByCombined |
c7463669 RH |
962 | Omit range reduction step when performing complex division |
963 | ||
35085f76 JB |
964 | fcx-fortran-rules |
965 | Common Report Var(flag_cx_fortran_rules) Optimization | |
966 | Complex multiplication and division follow Fortran rules | |
967 | ||
6ff3a151 | 968 | fdata-sections |
c662432e | 969 | Common Report Var(flag_data_sections) Optimization |
f3fdaec4 | 970 | Place data items into their own section |
6ff3a151 | 971 | |
0a090f42 | 972 | fdbg-cnt-list |
299404a1 | 973 | Common Report Var(common_deferred_options) Defer |
0a090f42 SP |
974 | List all available debugging counters with their limits and counts. |
975 | ||
6fb5fa3c | 976 | fdbg-cnt= |
299404a1 | 977 | Common RejectNegative Joined Var(common_deferred_options) Defer |
f94e1d66 | 978 | -fdbg-cnt=<counter>:<limit>[,<counter>:<limit>,...] Set the debug counter limit. |
6fb5fa3c | 979 | |
c8aea42c | 980 | fdebug-prefix-map= |
299404a1 | 981 | Common Joined RejectNegative Var(common_deferred_options) Defer |
c8aea42c PB |
982 | Map one directory name to another in debug information |
983 | ||
76f9db36 | 984 | fdebug-types-section |
98095aa3 | 985 | Common Report Var(flag_debug_types_section) Init(0) |
76f9db36 JJ |
986 | Output .debug_types section when using DWARF v4 debuginfo. |
987 | ||
31b66477 KC |
988 | ; Nonzero for -fdefer-pop: don't pop args after each function call |
989 | ; instead save them up to pop many calls' args with one insns. | |
de32c0cb | 990 | fdefer-pop |
c662432e | 991 | Common Report Var(flag_defer_pop) Optimization |
f3fdaec4 | 992 | Defer popping functions args from stack until later |
de32c0cb NB |
993 | |
994 | fdelayed-branch | |
c662432e | 995 | Common Report Var(flag_delayed_branch) Optimization |
f3fdaec4 | 996 | Attempt to fill delay slots of branch instructions |
de32c0cb | 997 | |
2da02156 EB |
998 | fdelete-dead-exceptions |
999 | Common Report Var(flag_delete_dead_exceptions) Init(0) | |
1000 | Delete dead instructions that may throw exceptions | |
1001 | ||
de32c0cb | 1002 | fdelete-null-pointer-checks |
1ad2f450 | 1003 | Common Report Var(flag_delete_null_pointer_checks) Init(1) Optimization |
f3fdaec4 | 1004 | Delete useless null pointer checks |
de32c0cb | 1005 | |
05842ff5 MJ |
1006 | fdevirtualize |
1007 | Common Report Var(flag_devirtualize) Optimization | |
1008 | Try to convert virtual calls to direct ones. | |
1009 | ||
de32c0cb | 1010 | fdiagnostics-show-location= |
e6d4b984 | 1011 | Common Joined RejectNegative Enum(diagnostic_prefixing_rule) |
cf03fd63 | 1012 | -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics |
de32c0cb | 1013 | |
e6d4b984 JM |
1014 | ; Required for these enum values. |
1015 | SourceInclude | |
1016 | pretty-print.h | |
1017 | ||
1018 | Enum | |
1019 | Name(diagnostic_prefixing_rule) Type(int) | |
1020 | ||
1021 | EnumValue | |
1022 | Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) | |
1023 | ||
1024 | EnumValue | |
1025 | Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) | |
1026 | ||
9fec0042 MLI |
1027 | fdiagnostics-show-caret |
1028 | Common Var(flag_diagnostics_show_caret) Init(1) | |
1029 | Show the source line with a caret indicating the column | |
1030 | ||
ccf08a6e | 1031 | fdiagnostics-show-option |
c7d0de89 | 1032 | Common Var(flag_diagnostics_show_option) Init(1) |
c85ce869 | 1033 | Amend appropriate diagnostic messages with the command line option that controls them |
ccf08a6e | 1034 | |
226c52aa XDL |
1035 | fdisable- |
1036 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1037 | -fdisable-[tree|rtl|ipa]-<pass>=range1+range2 disables an optimization pass | |
1038 | ||
1039 | fenable- | |
1040 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1041 | -fenable-[tree|rtl|ipa]-<pass>=range1+range2 enables an optimization pass | |
1042 | ||
6de9cd9a | 1043 | fdump- |
21bf1558 | 1044 | Common Joined RejectNegative Var(common_deferred_options) Defer |
6de9cd9a DN |
1045 | -fdump-<type> Dump various compiler internals to a file |
1046 | ||
d1583032 JM |
1047 | fdump-final-insns |
1048 | Driver RejectNegative | |
1049 | ||
2153915d AO |
1050 | fdump-final-insns= |
1051 | Common RejectNegative Joined Var(flag_dump_final_insns) | |
1052 | -fdump-final-insns=filename Dump to filename the insns at the end of translation | |
1053 | ||
c6a13190 ILT |
1054 | fdump-go-spec= |
1055 | Common RejectNegative Joined Var(flag_dump_go_spec) | |
1056 | -fdump-go-spec=filename Write all declarations to file as Go code | |
1057 | ||
24a7799e R |
1058 | fdump-noaddr |
1059 | Common Report Var(flag_dump_noaddr) | |
1060 | Suppress output of addresses in debugging dumps | |
1061 | ||
deced1e2 XDL |
1062 | fdump-passes |
1063 | Common Var(flag_dump_passes) Init(0) | |
1064 | Dump optimization passes | |
1065 | ||
6ff3a151 | 1066 | fdump-unnumbered |
e90afde6 | 1067 | Common Report Var(flag_dump_unnumbered) |
24a7799e | 1068 | Suppress output of instruction numbers, line number notes and addresses in debugging dumps |
6ff3a151 | 1069 | |
2aa7c49b | 1070 | fdump-unnumbered-links |
e90afde6 | 1071 | Common Report Var(flag_dump_unnumbered_links) |
2aa7c49b AO |
1072 | Suppress output of previous and next insn numbers in debugging dumps |
1073 | ||
b5b8b0ac AO |
1074 | fdwarf2-cfi-asm |
1075 | Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE) | |
1076 | Enable CFI tables via GAS assembler directives. | |
1077 | ||
355866de | 1078 | fearly-inlining |
c662432e | 1079 | Common Report Var(flag_early_inlining) Init(1) Optimization |
355866de RG |
1080 | Perform early inlining |
1081 | ||
de32c0cb | 1082 | feliminate-dwarf2-dups |
50431bc4 | 1083 | Common Report Var(flag_eliminate_dwarf2_dups) |
f3fdaec4 | 1084 | Perform DWARF2 duplicate elimination |
de32c0cb | 1085 | |
07ffa034 MJ |
1086 | fipa-sra |
1087 | Common Report Var(flag_ipa_sra) Init(0) Optimization | |
1088 | Perform interprocedural reduction of aggregates | |
1089 | ||
6a08f7b3 | 1090 | feliminate-unused-debug-symbols |
50431bc4 | 1091 | Common Report Var(flag_debug_only_used_symbols) |
f3fdaec4 | 1092 | Perform unused type elimination in debug info |
6a08f7b3 | 1093 | |
de32c0cb | 1094 | feliminate-unused-debug-types |
50431bc4 | 1095 | Common Report Var(flag_eliminate_unused_debug_types) Init(1) |
f3fdaec4 | 1096 | Perform unused type elimination in debug info |
de32c0cb | 1097 | |
e713adf6 | 1098 | femit-class-debug-always |
eae8e474 | 1099 | Common Report Var(flag_emit_class_debug_always) Init(0) |
e713adf6 CD |
1100 | Do not suppress C++ class debug information. |
1101 | ||
6ff3a151 | 1102 | fexceptions |
c662432e | 1103 | Common Report Var(flag_exceptions) Optimization |
f3fdaec4 | 1104 | Enable exception handling |
6ff3a151 | 1105 | |
de32c0cb | 1106 | fexpensive-optimizations |
c662432e | 1107 | Common Report Var(flag_expensive_optimizations) Optimization |
f3fdaec4 | 1108 | Perform a number of minor, expensive optimizations |
de32c0cb | 1109 | |
8ce94e44 | 1110 | fexcess-precision= |
e6d4b984 | 1111 | Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) |
8ce94e44 JM |
1112 | -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision |
1113 | ||
e6d4b984 JM |
1114 | Enum |
1115 | Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) | |
1116 | ||
1117 | EnumValue | |
1118 | Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) | |
1119 | ||
1120 | EnumValue | |
1121 | Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) | |
1122 | ||
058de654 NB |
1123 | ffast-math |
1124 | Common | |
1125 | ||
cc8547a7 AK |
1126 | ffat-lto-objects |
1127 | Common Var(flag_fat_lto_objects) Init(1) | |
1128 | Output lto objects containing both the intermediate language and binary output. | |
1129 | ||
6ff3a151 | 1130 | ffinite-math-only |
5e46b0c6 | 1131 | Common Report Var(flag_finite_math_only) Optimization SetByCombined |
f3fdaec4 | 1132 | Assume no NaNs or infinities are generated |
6ff3a151 | 1133 | |
058de654 | 1134 | ffixed- |
21bf1558 | 1135 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 1136 | -ffixed-<register> Mark <register> as being unavailable to the compiler |
058de654 | 1137 | |
de32c0cb | 1138 | ffloat-store |
c662432e | 1139 | Common Report Var(flag_float_store) Optimization |
31b66477 | 1140 | Don't allocate floats and doubles in extended-precision registers |
de32c0cb NB |
1141 | |
1142 | fforce-addr | |
2d2bd949 | 1143 | Common Ignore |
3de5e93a | 1144 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1145 | |
2ca2b607 SB |
1146 | fforward-propagate |
1147 | Common Report Var(flag_forward_propagate) Optimization | |
a52b023a PB |
1148 | Perform a forward propagation pass on RTL |
1149 | ||
16949072 | 1150 | ffp-contract= |
e6d4b984 | 1151 | Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) |
16949072 RG |
1152 | -ffp-contract=[off|on|fast] Perform floating-point expression contraction. |
1153 | ||
e6d4b984 JM |
1154 | Enum |
1155 | Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) | |
1156 | ||
1157 | EnumValue | |
1158 | Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) | |
1159 | ||
1160 | ; Not implemented, fall back to conservative FP_CONTRACT_OFF. | |
1161 | EnumValue | |
1162 | Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) | |
1163 | ||
1164 | EnumValue | |
1165 | Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) | |
1166 | ||
31b66477 KC |
1167 | ; Nonzero means don't put addresses of constant functions in registers. |
1168 | ; Used for compiling the Unix kernel, where strange substitutions are | |
1169 | ; done on the assembly output. | |
de32c0cb | 1170 | ffunction-cse |
50431bc4 | 1171 | Common Report Var(flag_no_function_cse,0) |
f3fdaec4 | 1172 | Allow function addresses to be held in registers |
de32c0cb | 1173 | |
6ff3a151 | 1174 | ffunction-sections |
50431bc4 | 1175 | Common Report Var(flag_function_sections) |
f3fdaec4 | 1176 | Place each function into its own section |
6ff3a151 | 1177 | |
de32c0cb | 1178 | fgcse |
c662432e | 1179 | Common Report Var(flag_gcse) Optimization |
f3fdaec4 | 1180 | Perform global common subexpression elimination |
de32c0cb NB |
1181 | |
1182 | fgcse-lm | |
c662432e | 1183 | Common Report Var(flag_gcse_lm) Init(1) Optimization |
f3fdaec4 | 1184 | Perform enhanced load motion during global common subexpression elimination |
de32c0cb NB |
1185 | |
1186 | fgcse-sm | |
c662432e | 1187 | Common Report Var(flag_gcse_sm) Init(0) Optimization |
f3fdaec4 | 1188 | Perform store motion after global common subexpression elimination |
de32c0cb | 1189 | |
f5f2e3cd | 1190 | fgcse-las |
c662432e | 1191 | Common Report Var(flag_gcse_las) Init(0) Optimization |
f9957958 MH |
1192 | Perform redundant load after store elimination in global common subexpression |
1193 | elimination | |
1194 | ||
1195 | fgcse-after-reload | |
c662432e | 1196 | Common Report Var(flag_gcse_after_reload) Optimization |
f9957958 | 1197 | Perform global common subexpression elimination after register allocation |
c85ce869 | 1198 | has finished |
f5f2e3cd | 1199 | |
d0a58904 | 1200 | ; This option is not documented yet as its semantics will change. |
f8bf9252 SP |
1201 | fgraphite |
1202 | Common Report Var(flag_graphite) | |
1203 | Enable in and out of Graphite representation | |
1204 | ||
204b560f SP |
1205 | fgraphite-identity |
1206 | Common Report Var(flag_graphite_identity) Optimization | |
1207 | Enable Graphite Identity transformation | |
1208 | ||
372a6eb8 BS |
1209 | fhoist-adjacent-loads |
1210 | Common Report Var(flag_hoist_adjacent_loads) Optimization | |
1211 | Enable hoisting adjacent loads to encourage generating conditional move | |
1212 | instructions | |
1213 | ||
3cf0e270 SP |
1214 | floop-parallelize-all |
1215 | Common Report Var(flag_loop_parallelize_all) Optimization | |
204b560f SP |
1216 | Mark all loops as parallel |
1217 | ||
f8bf9252 SP |
1218 | floop-strip-mine |
1219 | Common Report Var(flag_loop_strip_mine) Optimization | |
1220 | Enable Loop Strip Mining transformation | |
1221 | ||
1222 | floop-interchange | |
1223 | Common Report Var(flag_loop_interchange) Optimization | |
1224 | Enable Loop Interchange transformation | |
1225 | ||
1226 | floop-block | |
1227 | Common Report Var(flag_loop_block) Optimization | |
1228 | Enable Loop Blocking transformation | |
1229 | ||
0a35513e AH |
1230 | fgnu-tm |
1231 | Common Report Var(flag_tm) | |
1232 | Enable support for GNU transactional memory | |
1233 | ||
98af4c9f | 1234 | floop-flatten |
093193be MK |
1235 | Common Ignore |
1236 | Does nothing. Preserved for backward compatibility. | |
98af4c9f | 1237 | |
b60cc080 TG |
1238 | floop-nest-optimize |
1239 | Common Report Var(flag_loop_optimize_isl) Optimization | |
1240 | Enable the ISL based loop nest optimizer | |
1241 | ||
6a78b724 DD |
1242 | fstrict-volatile-bitfields |
1243 | Common Report Var(flag_strict_volatile_bitfields) Init(-1) | |
1244 | Force bitfield accesses to match their type width | |
1245 | ||
6ff3a151 | 1246 | fguess-branch-probability |
c662432e | 1247 | Common Report Var(flag_guess_branch_prob) Optimization |
f3fdaec4 | 1248 | Enable guessing of branch probabilities |
6ff3a151 | 1249 | |
31b66477 KC |
1250 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
1251 | ; Generate position-independent code for executables if possible | |
1252 | ; On SVR4 targets, it also controls whether or not to emit a | |
1253 | ; string identifying the compiler. | |
6ff3a151 | 1254 | fident |
50431bc4 | 1255 | Common Report Var(flag_no_ident,0) |
f3fdaec4 | 1256 | Process #ident directives |
6ff3a151 | 1257 | |
de32c0cb | 1258 | fif-conversion |
c662432e | 1259 | Common Report Var(flag_if_conversion) Optimization |
f3fdaec4 | 1260 | Perform conversion of conditional jumps to branchless equivalents |
de32c0cb NB |
1261 | |
1262 | fif-conversion2 | |
c662432e | 1263 | Common Report Var(flag_if_conversion2) Optimization |
f3fdaec4 | 1264 | Perform conversion of conditional jumps to conditional execution |
de32c0cb | 1265 | |
87e2a8fd XDL |
1266 | fstack-reuse= |
1267 | Common Joined RejectNegative Enum(stack_reuse_level) Var(flag_stack_reuse) Init(SR_ALL) | |
1268 | -fstack-reuse=[all|named_vars|none] Set stack reuse level for local variables. | |
1269 | ||
1270 | Enum | |
1271 | Name(stack_reuse_level) Type(enum stack_reuse_level) UnknownError(unknown Stack Reuse Level %qs) | |
1272 | ||
1273 | EnumValue | |
1274 | Enum(stack_reuse_level) String(all) Value(SR_ALL) | |
1275 | ||
1276 | EnumValue | |
1277 | Enum(stack_reuse_level) String(named_vars) Value(SR_NAMED_VARS) | |
1278 | ||
1279 | EnumValue | |
1280 | Enum(stack_reuse_level) String(none) Value(SR_NONE) | |
1281 | ||
384a5197 SP |
1282 | ftree-loop-if-convert |
1283 | Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization | |
1284 | Convert conditional jumps in innermost loops to branchless equivalents | |
1285 | ||
bd544141 SP |
1286 | ftree-loop-if-convert-stores |
1287 | Common Report Var(flag_tree_loop_if_convert_stores) Optimization | |
1288 | Also if-convert conditional jumps containing memory writes | |
1289 | ||
31b66477 KC |
1290 | ; -finhibit-size-directive inhibits output of .size for ELF. |
1291 | ; This is used only for compiling crtstuff.c, | |
1292 | ; and it may be extended to other effects | |
1293 | ; needed for crtstuff.c on other systems. | |
6ff3a151 | 1294 | finhibit-size-directive |
50431bc4 | 1295 | Common Report Var(flag_inhibit_size_directive) |
f3fdaec4 | 1296 | Do not generate .size directives |
6ff3a151 | 1297 | |
3e293154 MJ |
1298 | findirect-inlining |
1299 | Common Report Var(flag_indirect_inlining) | |
1300 | Perform indirect inlining | |
1301 | ||
99ea07f8 RG |
1302 | ; General flag to enable inlining. Specifying -fno-inline will disable |
1303 | ; all inlining apart from always-inline functions. | |
de32c0cb | 1304 | finline |
0f042bc5 | 1305 | Common Report Var(flag_no_inline,0) Init(0) Optimization |
99ea07f8 | 1306 | Enable inlining of function declared \"inline\", disabling disables all inlining |
de32c0cb | 1307 | |
4d4b8cb9 JH |
1308 | finline-small-functions |
1309 | Common Report Var(flag_inline_small_functions) Optimization | |
99ea07f8 | 1310 | Integrate functions into their callers when code size is known not to grow |
4d4b8cb9 | 1311 | |
de32c0cb | 1312 | finline-functions |
c662432e | 1313 | Common Report Var(flag_inline_functions) Optimization |
99ea07f8 | 1314 | Integrate functions not declared \"inline\" into their callers when profitable |
de32c0cb | 1315 | |
355866de | 1316 | finline-functions-called-once |
fb37c1de | 1317 | Common Report Var(flag_inline_functions_called_once) Optimization |
99ea07f8 | 1318 | Integrate functions only required by their single caller |
d63db217 | 1319 | |
d302c9d6 | 1320 | finline-limit- |
5de8299c | 1321 | Common RejectNegative Joined Alias(finline-limit=) |
d302c9d6 NB |
1322 | |
1323 | finline-limit= | |
1324 | Common RejectNegative Joined UInteger | |
cf03fd63 | 1325 | -finline-limit=<number> Limit the size of inlined functions to <number> |
d302c9d6 | 1326 | |
86951993 AM |
1327 | finline-atomics |
1328 | Common Report Var(flag_inline_atomics) Init(1) Optimization | |
1329 | Inline __atomic operations when a lock free instruction sequence is available. | |
1330 | ||
6ff3a151 | 1331 | finstrument-functions |
50431bc4 | 1332 | Common Report Var(flag_instrument_function_entry_exit) |
f3fdaec4 | 1333 | Instrument function entry and exit with profiling calls |
6ff3a151 | 1334 | |
8d5a7d1f ILT |
1335 | finstrument-functions-exclude-function-list= |
1336 | Common RejectNegative Joined | |
1337 | -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions | |
1338 | ||
1339 | finstrument-functions-exclude-file-list= | |
1340 | Common RejectNegative Joined | |
1341 | -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files | |
1342 | ||
d6e14e8f | 1343 | fipa-cp |
c662432e | 1344 | Common Report Var(flag_ipa_cp) Optimization |
d6e14e8f SB |
1345 | Perform Interprocedural constant propagation |
1346 | ||
5e45130d JH |
1347 | fipa-cp-clone |
1348 | Common Report Var(flag_ipa_cp_clone) Optimization | |
1349 | Perform cloning to make Interprocedural constant propagation stronger | |
1350 | ||
e65bb9be JH |
1351 | fipa-profile |
1352 | Common Report Var(flag_ipa_profile) Init(0) Optimization | |
1353 | Perform interprocedural profile propagation | |
ea900239 | 1354 | |
4cf4d6a3 | 1355 | fipa-pta |
c662432e | 1356 | Common Report Var(flag_ipa_pta) Init(0) Optimization |
4cf4d6a3 DB |
1357 | Perform interprocedural points-to analysis |
1358 | ||
e65bb9be JH |
1359 | fipa-pure-const |
1360 | Common Report Var(flag_ipa_pure_const) Init(0) Optimization | |
1361 | Discover pure and const functions | |
1362 | ||
ea900239 | 1363 | fipa-reference |
c662432e | 1364 | Common Report Var(flag_ipa_reference) Init(0) Optimization |
ea900239 DB |
1365 | Discover readonly and non addressable static variables |
1366 | ||
43d861a5 | 1367 | fipa-matrix-reorg |
04f92ff4 RG |
1368 | Common Ignore |
1369 | Does nothing. Preserved for backward compatibility. | |
43d861a5 | 1370 | |
e1dc98b2 | 1371 | fipa-struct-reorg |
b8beb4d1 RG |
1372 | Common Ignore |
1373 | Does nothing. Preserved for backward compatibility. | |
e1dc98b2 | 1374 | |
058e97ec | 1375 | fira-algorithm= |
e6d4b984 | 1376 | Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) |
7db7ed3c VM |
1377 | -fira-algorithm=[CB|priority] Set the used IRA algorithm |
1378 | ||
e6d4b984 JM |
1379 | Enum |
1380 | Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) | |
1381 | ||
1382 | EnumValue | |
1383 | Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) | |
1384 | ||
1385 | EnumValue | |
1386 | Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) | |
1387 | ||
7db7ed3c | 1388 | fira-region= |
ffe8727f | 1389 | Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_AUTODETECT) |
7db7ed3c | 1390 | -fira-region=[one|all|mixed] Set regions for IRA |
058e97ec | 1391 | |
e6d4b984 JM |
1392 | Enum |
1393 | Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) | |
1394 | ||
1395 | EnumValue | |
1396 | Enum(ira_region) String(one) Value(IRA_REGION_ONE) | |
1397 | ||
1398 | EnumValue | |
1399 | Enum(ira_region) String(all) Value(IRA_REGION_ALL) | |
1400 | ||
1401 | EnumValue | |
1402 | Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) | |
1403 | ||
b11f0116 BC |
1404 | fira-hoist-pressure |
1405 | Common Report Var(flag_ira_hoist_pressure) Init(1) Optimization | |
1406 | Use IRA based register pressure calculation | |
1407 | in RTL hoist optimizations. | |
1408 | ||
1833192f VM |
1409 | fira-loop-pressure |
1410 | Common Report Var(flag_ira_loop_pressure) | |
1411 | Use IRA based register pressure calculation | |
1412 | in RTL loop optimizations. | |
1413 | ||
058e97ec VM |
1414 | fira-share-save-slots |
1415 | Common Report Var(flag_ira_share_save_slots) Init(1) | |
1416 | Share slots for saving different hard registers. | |
1417 | ||
1418 | fira-share-spill-slots | |
1419 | Common Report Var(flag_ira_share_spill_slots) Init(1) | |
1420 | Share stack slots for spilled pseudo-registers. | |
1421 | ||
1422 | fira-verbose= | |
5498f011 | 1423 | Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) |
f94e1d66 | 1424 | -fira-verbose=<number> Control IRA's level of diagnostic messages. |
058e97ec | 1425 | |
8b11a64c | 1426 | fivopts |
c662432e | 1427 | Common Report Var(flag_ivopts) Init(1) Optimization |
8b11a64c ZD |
1428 | Optimize induction variables on trees |
1429 | ||
82c0180d | 1430 | fjump-tables |
c662432e | 1431 | Common Var(flag_jump_tables) Init(1) Optimization |
82c0180d JM |
1432 | Use jump tables for sufficiently large switch statements |
1433 | ||
de32c0cb | 1434 | fkeep-inline-functions |
50431bc4 | 1435 | Common Report Var(flag_keep_inline_functions) |
f3fdaec4 | 1436 | Generate code for functions even if they are fully inlined |
de32c0cb NB |
1437 | |
1438 | fkeep-static-consts | |
50431bc4 | 1439 | Common Report Var(flag_keep_static_consts) Init(1) |
f3fdaec4 | 1440 | Emit static const variables even if they are not used |
de32c0cb | 1441 | |
6ff3a151 | 1442 | fleading-underscore |
50431bc4 | 1443 | Common Report Var(flag_leading_underscore) Init(-1) |
f3fdaec4 | 1444 | Give external symbols a leading underscore |
6ff3a151 | 1445 | |
efa1cdf0 | 1446 | floop-optimize |
2d2bd949 | 1447 | Common Ignore |
c0220ea4 | 1448 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 1449 | |
d7f09764 | 1450 | flto |
014d92e1 | 1451 | Common |
d7f09764 DN |
1452 | Enable link-time optimization. |
1453 | ||
014d92e1 JH |
1454 | flto= |
1455 | Common RejectNegative Joined Var(flag_lto) | |
1456 | Link-time optimization with number of parallel jobs or jobserver. | |
1457 | ||
852e4bd2 JH |
1458 | flto-partition=1to1 |
1459 | Common Var(flag_lto_partition_1to1) | |
c3c445e1 | 1460 | Partition symbols and vars at linktime based on object files they originate from |
852e4bd2 JH |
1461 | |
1462 | flto-partition=balanced | |
1463 | Common Var(flag_lto_partition_balanced) | |
1464 | Partition functions and vars at linktime into approximately same sized buckets | |
1465 | ||
c3c445e1 JH |
1466 | flto-partition=max |
1467 | Common Var(flag_lto_partition_max) | |
1468 | Put every symbol into separate partition | |
1469 | ||
014d92e1 JH |
1470 | flto-partition=none |
1471 | Common Var(flag_lto_partition_none) | |
1472 | Disable partioning and streaming | |
1473 | ||
d7f09764 DN |
1474 | ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. |
1475 | flto-compression-level= | |
fcfbd84e | 1476 | Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) |
f94e1d66 | 1477 | -flto-compression-level=<number> Use zlib compression level <number> for IL |
d7f09764 DN |
1478 | |
1479 | flto-report | |
1d67dde8 | 1480 | Common Report Var(flag_lto_report) Init(0) |
d7f09764 DN |
1481 | Report various link-time optimization statistics |
1482 | ||
6ff3a151 | 1483 | fmath-errno |
5e46b0c6 | 1484 | Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined |
f3fdaec4 | 1485 | Set errno after built-in math functions |
6ff3a151 | 1486 | |
3a789837 NF |
1487 | fmax-errors= |
1488 | Common Joined RejectNegative UInteger Var(flag_max_errors) | |
1489 | -fmax-errors=<number> Maximum number of errors to report | |
1490 | ||
6ff3a151 | 1491 | fmem-report |
50431bc4 | 1492 | Common Report Var(mem_report) |
f3fdaec4 | 1493 | Report on permanent memory allocation |
6ff3a151 | 1494 | |
b3e44629 AK |
1495 | fmem-report-wpa |
1496 | Common Report Var(mem_report_wpa) | |
1497 | Report on permanent memory allocation in WPA only | |
1498 | ||
31b66477 KC |
1499 | ; This will attempt to merge constant section constants, if 1 only |
1500 | ; string constants and constants from constant pool, if 2 also constant | |
1501 | ; variables. | |
6ff3a151 | 1502 | fmerge-all-constants |
c662432e | 1503 | Common Report Var(flag_merge_constants,2) Init(1) Optimization |
f3fdaec4 | 1504 | Attempt to merge identical constants and constant variables |
6ff3a151 NB |
1505 | |
1506 | fmerge-constants | |
f0036cca | 1507 | Common Report Var(flag_merge_constants,1) Optimization |
f3fdaec4 | 1508 | Attempt to merge identical constants across compilation units |
6ff3a151 | 1509 | |
28a08168 ILT |
1510 | fmerge-debug-strings |
1511 | Common Report Var(flag_merge_debug_strings) Init(1) | |
1512 | Attempt to merge identical debug strings across compilation units | |
1513 | ||
de32c0cb NB |
1514 | fmessage-length= |
1515 | Common RejectNegative Joined UInteger | |
cf03fd63 | 1516 | -fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping |
de32c0cb | 1517 | |
e5626198 | 1518 | fmodulo-sched |
c662432e | 1519 | Common Report Var(flag_modulo_sched) Optimization |
e5626198 AZ |
1520 | Perform SMS based modulo scheduling before the first scheduling pass |
1521 | ||
517d76fa VY |
1522 | fmodulo-sched-allow-regmoves |
1523 | Common Report Var(flag_modulo_sched_allow_regmoves) | |
1524 | Perform SMS based modulo scheduling with register moves allowed | |
1525 | ||
5e962776 | 1526 | fmove-loop-invariants |
c662432e | 1527 | Common Report Var(flag_move_loop_invariants) Init(1) Optimization |
5e962776 ZD |
1528 | Move loop invariant computations out of loops |
1529 | ||
6fb5fa3c | 1530 | fdce |
6ae4be32 | 1531 | Common Var(flag_dce) Init(1) Optimization |
6fb5fa3c DB |
1532 | Use the RTL dead code elimination pass |
1533 | ||
1534 | fdse | |
6ae4be32 | 1535 | Common Var(flag_dse) Init(1) Optimization |
6fb5fa3c DB |
1536 | Use the RTL dead store elimination pass |
1537 | ||
d72372e4 | 1538 | freschedule-modulo-scheduled-loops |
c662432e | 1539 | Common Report Var(flag_resched_modulo_sched) Optimization |
d72372e4 MH |
1540 | Enable/Disable the traditional scheduling in loops that already passed modulo scheduling |
1541 | ||
6ff3a151 | 1542 | fnon-call-exceptions |
c662432e | 1543 | Common Report Var(flag_non_call_exceptions) Optimization |
f3fdaec4 | 1544 | Support synchronous non-call exceptions |
6ff3a151 | 1545 | |
de32c0cb | 1546 | fomit-frame-pointer |
c662432e | 1547 | Common Report Var(flag_omit_frame_pointer) Optimization |
f3fdaec4 | 1548 | When possible do not generate stack frames |
de32c0cb | 1549 | |
78c60e3d SS |
1550 | fopt-info |
1551 | Common Report Var(flag_opt_info) Optimization | |
1552 | Enable all optimization info dumps on stderr | |
1553 | ||
1554 | fopt-info- | |
1555 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1556 | -fopt-info[-<type>=filename] Dump compiler optimization details | |
1557 | ||
6ff3a151 | 1558 | foptimize-register-move |
c662432e | 1559 | Common Report Var(flag_regmove) Optimization |
f3fdaec4 | 1560 | Do the full register move optimization pass |
6ff3a151 | 1561 | |
de32c0cb | 1562 | foptimize-sibling-calls |
c662432e | 1563 | Common Report Var(flag_optimize_sibling_calls) Optimization |
f3fdaec4 | 1564 | Optimize sibling and tail recursive calls |
de32c0cb | 1565 | |
3e485f62 JH |
1566 | fpartial-inlining |
1567 | Common Report Var(flag_partial_inlining) | |
1568 | Perform partial inlining | |
1569 | ||
a5573239 JH |
1570 | fpre-ipa-mem-report |
1571 | Common Report Var(pre_ipa_mem_report) | |
1572 | Report on memory allocation before interprocedural optimization | |
1573 | ||
1574 | fpost-ipa-mem-report | |
1575 | Common Report Var(post_ipa_mem_report) | |
1576 | Report on memory allocation before interprocedural optimization | |
1577 | ||
6ff3a151 | 1578 | fpack-struct |
c662432e | 1579 | Common Report Var(flag_pack_struct) Optimization |
f3fdaec4 | 1580 | Pack structure members together without holes |
6ff3a151 | 1581 | |
467cecf3 | 1582 | fpack-struct= |
c662432e | 1583 | Common RejectNegative Joined UInteger Optimization |
467cecf3 JB |
1584 | -fpack-struct=<number> Set initial maximum structure member alignment |
1585 | ||
de32c0cb | 1586 | fpcc-struct-return |
5498f011 | 1587 | Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) |
f3fdaec4 | 1588 | Return small aggregates in memory, not registers |
de32c0cb NB |
1589 | |
1590 | fpeel-loops | |
c662432e | 1591 | Common Report Var(flag_peel_loops) Optimization |
f3fdaec4 | 1592 | Perform loop peeling |
de32c0cb NB |
1593 | |
1594 | fpeephole | |
c662432e | 1595 | Common Report Var(flag_no_peephole,0) Optimization |
f3fdaec4 | 1596 | Enable machine specific peephole optimizations |
de32c0cb | 1597 | |
6ff3a151 | 1598 | fpeephole2 |
c662432e | 1599 | Common Report Var(flag_peephole2) Optimization |
f3fdaec4 | 1600 | Enable an RTL peephole pass before sched2 |
6ff3a151 | 1601 | |
31b66477 | 1602 | fPIC |
da0aa2cc | 1603 | Common Report Var(flag_pic,2) Negative(fPIE) |
31b66477 KC |
1604 | Generate position-independent code if possible (large mode) |
1605 | ||
1606 | fPIE | |
da0aa2cc | 1607 | Common Report Var(flag_pie,2) Negative(fpic) |
31b66477 KC |
1608 | Generate position-independent code for executables if possible (large mode) |
1609 | ||
6ff3a151 | 1610 | fpic |
da0aa2cc | 1611 | Common Report Var(flag_pic,1) Negative(fpie) |
31b66477 | 1612 | Generate position-independent code if possible (small mode) |
6ff3a151 NB |
1613 | |
1614 | fpie | |
da0aa2cc | 1615 | Common Report Var(flag_pie,1) Negative(fPIC) |
31b66477 | 1616 | Generate position-independent code for executables if possible (small mode) |
6ff3a151 | 1617 | |
68a607d8 | 1618 | fplugin= |
21bf1558 | 1619 | Common Joined RejectNegative Var(common_deferred_options) Defer |
68a607d8 DN |
1620 | Specify a plugin to load |
1621 | ||
1622 | fplugin-arg- | |
21bf1558 | 1623 | Common Joined RejectNegative Var(common_deferred_options) Defer |
f94e1d66 | 1624 | -fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name> |
68a607d8 | 1625 | |
bbc8a8dc | 1626 | fpredictive-commoning |
6ae4be32 | 1627 | Common Report Var(flag_predictive_commoning) Optimization |
bbc8a8dc ZD |
1628 | Run predictive commoning optimization. |
1629 | ||
de32c0cb | 1630 | fprefetch-loop-arrays |
1fbb509a | 1631 | Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization |
f3fdaec4 | 1632 | Generate prefetch instructions, if available, for arrays in loops |
de32c0cb | 1633 | |
6ff3a151 | 1634 | fprofile |
50431bc4 | 1635 | Common Report Var(profile_flag) |
f3fdaec4 | 1636 | Enable basic program profiling code |
6ff3a151 NB |
1637 | |
1638 | fprofile-arcs | |
50431bc4 | 1639 | Common Report Var(profile_arc_flag) |
f3fdaec4 | 1640 | Insert arc-based program profiling code |
6ff3a151 | 1641 | |
2f908293 | 1642 | fprofile-dir= |
0576d21f | 1643 | Common Joined RejectNegative Var(profile_data_prefix) |
2f908293 SP |
1644 | Set the top-level directory for storing the profile data. |
1645 | The default is 'pwd'. | |
1646 | ||
52c76998 PY |
1647 | fprofile-correction |
1648 | Common Report Var(flag_profile_correction) | |
1649 | Enable correction of flow inconsistent profile data input | |
1650 | ||
a8a5f53a JH |
1651 | fprofile-generate |
1652 | Common | |
1653 | Enable common options for generating profile info for profile feedback directed optimizations | |
1654 | ||
2f908293 SP |
1655 | fprofile-generate= |
1656 | Common Joined RejectNegative | |
1657 | Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir= | |
1658 | ||
a8a5f53a | 1659 | fprofile-use |
2f908293 | 1660 | Common Var(flag_profile_use) |
a8a5f53a JH |
1661 | Enable common options for performing profile feedback directed optimizations |
1662 | ||
2f908293 SP |
1663 | fprofile-use= |
1664 | Common Joined RejectNegative | |
1665 | Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir= | |
1666 | ||
fca9dc00 | 1667 | fprofile-values |
50431bc4 | 1668 | Common Report Var(flag_profile_values) |
fca9dc00 ZD |
1669 | Insert code to profile values of expressions |
1670 | ||
37e5402b JH |
1671 | fprofile-report |
1672 | Common Report Var(profile_report) | |
1673 | Report on consistency of profile | |
1674 | ||
de32c0cb | 1675 | frandom-seed |
299404a1 | 1676 | Common Var(common_deferred_options) Defer |
de32c0cb NB |
1677 | |
1678 | frandom-seed= | |
299404a1 | 1679 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 1680 | -frandom-seed=<string> Make compile reproducible using <string> |
de32c0cb | 1681 | |
e0d9d0dd NC |
1682 | ; This switch causes the command line that was used to create an |
1683 | ; object file to be recorded into the object file. The exact format | |
1684 | ; of this recording is target and binary file format dependent. | |
1685 | ; It is related to the -fverbose-asm switch, but that switch only | |
1686 | ; records information in the assembler output file as comments, so | |
1687 | ; they never reach the object file. | |
1688 | frecord-gcc-switches | |
1689 | Common Report Var(flag_record_gcc_switches) | |
1690 | Record gcc command line switches in the object file. | |
1691 | ||
de32c0cb | 1692 | freg-struct-return |
f0036cca | 1693 | Common Report Var(flag_pcc_struct_return,0) Optimization |
f3fdaec4 | 1694 | Return small aggregates in registers |
de32c0cb | 1695 | |
6ff3a151 | 1696 | fregmove |
c662432e | 1697 | Common Report Var(flag_regmove) Optimization |
f3fdaec4 | 1698 | Enables a register move optimization |
6ff3a151 NB |
1699 | |
1700 | frename-registers | |
c662432e | 1701 | Common Report Var(flag_rename_registers) Init(2) Optimization |
f3fdaec4 | 1702 | Perform a register renaming optimization pass |
6ff3a151 NB |
1703 | |
1704 | freorder-blocks | |
c662432e | 1705 | Common Report Var(flag_reorder_blocks) Optimization |
f3fdaec4 | 1706 | Reorder basic blocks to improve code placement |
6ff3a151 | 1707 | |
750054a2 | 1708 | freorder-blocks-and-partition |
c662432e | 1709 | Common Report Var(flag_reorder_blocks_and_partition) Optimization |
750054a2 CT |
1710 | Reorder basic blocks and partition into hot and cold sections |
1711 | ||
6ff3a151 | 1712 | freorder-functions |
c662432e | 1713 | Common Report Var(flag_reorder_functions) Optimization |
f3fdaec4 | 1714 | Reorder functions to improve code placement |
6ff3a151 | 1715 | |
de32c0cb | 1716 | frerun-cse-after-loop |
3020190e | 1717 | Common Report Var(flag_rerun_cse_after_loop) Optimization |
f3fdaec4 | 1718 | Add a common subexpression elimination pass after loop optimizations |
de32c0cb | 1719 | |
efa1cdf0 | 1720 | frerun-loop-opt |
2d2bd949 | 1721 | Common Ignore |
c0220ea4 | 1722 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 1723 | |
039c3d42 | 1724 | frounding-math |
5e46b0c6 | 1725 | Common Report Var(flag_rounding_math) Optimization SetByCombined |
039c3d42 RS |
1726 | Disable optimizations that assume default FP rounding behavior |
1727 | ||
6ff3a151 | 1728 | fsched-interblock |
c662432e | 1729 | Common Report Var(flag_schedule_interblock) Init(1) Optimization |
f3fdaec4 | 1730 | Enable scheduling across basic blocks |
6ff3a151 | 1731 | |
ce18efcb VM |
1732 | fsched-pressure |
1733 | Common Report Var(flag_sched_pressure) Init(0) Optimization | |
1734 | Enable register pressure sensitive insn scheduling | |
1735 | ||
6ff3a151 | 1736 | fsched-spec |
c662432e | 1737 | Common Report Var(flag_schedule_speculative) Init(1) Optimization |
f3fdaec4 | 1738 | Allow speculative motion of non-loads |
6ff3a151 NB |
1739 | |
1740 | fsched-spec-load | |
c662432e | 1741 | Common Report Var(flag_schedule_speculative_load) Optimization |
f3fdaec4 | 1742 | Allow speculative motion of some loads |
6ff3a151 NB |
1743 | |
1744 | fsched-spec-load-dangerous | |
c662432e | 1745 | Common Report Var(flag_schedule_speculative_load_dangerous) Optimization |
f3fdaec4 | 1746 | Allow speculative motion of more loads |
6ff3a151 | 1747 | |
de32c0cb | 1748 | fsched-verbose= |
299404a1 | 1749 | Common RejectNegative Joined UInteger Var(sched_verbose_param) |
cf03fd63 | 1750 | -fsched-verbose=<number> Set the verbosity level of the scheduler |
de32c0cb | 1751 | |
6ff3a151 | 1752 | fsched2-use-superblocks |
c662432e | 1753 | Common Report Var(flag_sched2_use_superblocks) Optimization |
f3fdaec4 | 1754 | If scheduling post reload, do superblock scheduling |
6ff3a151 NB |
1755 | |
1756 | fsched2-use-traces | |
2d2bd949 | 1757 | Common Ignore |
57257f0d | 1758 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 1759 | |
de32c0cb | 1760 | fschedule-insns |
c662432e | 1761 | Common Report Var(flag_schedule_insns) Optimization |
f3fdaec4 | 1762 | Reschedule instructions before register allocation |
de32c0cb NB |
1763 | |
1764 | fschedule-insns2 | |
c662432e | 1765 | Common Report Var(flag_schedule_insns_after_reload) Optimization |
f3fdaec4 | 1766 | Reschedule instructions after register allocation |
de32c0cb | 1767 | |
e855c69d AB |
1768 | ; This flag should be on when a target implements non-trivial |
1769 | ; scheduling hooks, maybe saving some information for its own sake. | |
1770 | ; On IA64, for example, this is used for correct bundling. | |
1771 | fselective-scheduling | |
1772 | Common Report Var(flag_selective_scheduling) Optimization | |
1773 | Schedule instructions using selective scheduling algorithm | |
1774 | ||
1775 | fselective-scheduling2 | |
1776 | Common Report Var(flag_selective_scheduling2) Optimization | |
1777 | Run selective scheduling after reload | |
1778 | ||
1779 | fsel-sched-pipelining | |
1780 | Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization | |
1781 | Perform software pipelining of inner loops during selective scheduling | |
1782 | ||
1783 | fsel-sched-pipelining-outer-loops | |
1784 | Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization | |
1785 | Perform software pipelining of outer loops during selective scheduling | |
1786 | ||
1787 | fsel-sched-reschedule-pipelined | |
1788 | Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization | |
1789 | Reschedule pipelined regions without pipelining | |
1790 | ||
31b66477 KC |
1791 | ; sched_stalled_insns means that insns can be moved prematurely from the queue |
1792 | ; of stalled insns into the ready list. | |
569fa502 | 1793 | fsched-stalled-insns |
ab442df7 | 1794 | Common Report Var(flag_sched_stalled_insns) Optimization UInteger |
569fa502 DN |
1795 | Allow premature scheduling of queued insns |
1796 | ||
1797 | fsched-stalled-insns= | |
c22cacf3 | 1798 | Common RejectNegative Joined UInteger |
4e994432 | 1799 | -fsched-stalled-insns=<number> Set number of queued insns that can be prematurely scheduled |
569fa502 | 1800 | |
31b66477 KC |
1801 | ; sched_stalled_insns_dep controls how many recently scheduled cycles will |
1802 | ; be examined for a dependency on a stalled insn that is candidate for | |
1803 | ; premature removal from the queue of stalled insns into the ready list (has | |
1804 | ; an effect only if the flag 'sched_stalled_insns' is set). | |
569fa502 | 1805 | fsched-stalled-insns-dep |
ab442df7 | 1806 | Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger |
569fa502 DN |
1807 | Set dependence distance checking in premature scheduling of queued insns |
1808 | ||
1809 | fsched-stalled-insns-dep= | |
1810 | Common RejectNegative Joined UInteger | |
4e994432 | 1811 | -fsched-stalled-insns-dep=<number> Set dependence distance checking in premature scheduling of queued insns |
569fa502 | 1812 | |
ee4764a8 GS |
1813 | fsched-group-heuristic |
1814 | Common Report Var(flag_sched_group_heuristic) Init(1) Optimization | |
1815 | Enable the group heuristic in the scheduler | |
1816 | ||
1817 | fsched-critical-path-heuristic | |
1818 | Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization | |
1819 | Enable the critical path heuristic in the scheduler | |
1820 | ||
1821 | fsched-spec-insn-heuristic | |
1822 | Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization | |
1823 | Enable the speculative instruction heuristic in the scheduler | |
1824 | ||
ee4764a8 GS |
1825 | fsched-rank-heuristic |
1826 | Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization | |
1827 | Enable the rank heuristic in the scheduler | |
1828 | ||
1829 | fsched-last-insn-heuristic | |
1830 | Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization | |
1831 | Enable the last instruction heuristic in the scheduler | |
1832 | ||
1833 | fsched-dep-count-heuristic | |
1834 | Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization | |
1835 | Enable the dependent count heuristic in the scheduler | |
1836 | ||
aacd3885 | 1837 | fsection-anchors |
c662432e | 1838 | Common Report Var(flag_section_anchors) Optimization |
aacd3885 RS |
1839 | Access data in the same section from shared anchor points |
1840 | ||
8cd37d0b | 1841 | fsee |
2d2bd949 | 1842 | Common Ignore |
8393a9c8 | 1843 | Does nothing. Preserved for backward compatibility. |
8cd37d0b | 1844 | |
87a0ebfd | 1845 | fzee |
26cd9add EI |
1846 | Common Ignore |
1847 | Does nothing. Preserved for backward compatibility. | |
1848 | ||
1849 | free | |
1850 | Common Report Var(flag_ree) Init(0) | |
1851 | Turn on Redundant Extensions Elimination pass. | |
87a0ebfd | 1852 | |
8abb6b22 | 1853 | fshow-column |
1cb42611 | 1854 | Common Report Var(flag_show_column) Init(1) |
e74fe492 | 1855 | Show column numbers in diagnostics, when available. Default on |
8abb6b22 | 1856 | |
484db665 BS |
1857 | fshrink-wrap |
1858 | Common Report Var(flag_shrink_wrap) Optimization | |
1859 | Emit function prologues only before parts of the function that need it, | |
1860 | rather than at the top of the function. | |
1861 | ||
6ff3a151 | 1862 | fsignaling-nans |
5e46b0c6 | 1863 | Common Report Var(flag_signaling_nans) Optimization SetByCombined |
f3fdaec4 | 1864 | Disable optimizations observable by IEEE signaling NaNs |
6ff3a151 | 1865 | |
db02da79 | 1866 | fsigned-zeros |
5e46b0c6 | 1867 | Common Report Var(flag_signed_zeros) Init(1) Optimization SetByCombined |
db02da79 RS |
1868 | Disable floating point optimizations that ignore the IEEE signedness of zero |
1869 | ||
6ff3a151 | 1870 | fsingle-precision-constant |
c662432e | 1871 | Common Report Var(flag_single_precision_constant) Optimization |
f3fdaec4 | 1872 | Convert floating point constants to single precision constants |
6ff3a151 | 1873 | |
113d659a | 1874 | fsplit-ivs-in-unroller |
c662432e | 1875 | Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization |
c85ce869 | 1876 | Split lifetimes of induction variables when loops are unrolled |
113d659a | 1877 | |
7458026b ILT |
1878 | fsplit-stack |
1879 | Common Report Var(flag_split_stack) Init(-1) | |
1880 | Generate discontiguous stack frames | |
1881 | ||
e53a16e7 | 1882 | fsplit-wide-types |
21af5cdf | 1883 | Common Report Var(flag_split_wide_types) Optimization |
e53a16e7 ILT |
1884 | Split wide types into independent registers |
1885 | ||
f37a4f14 | 1886 | fvariable-expansion-in-unroller |
c662432e | 1887 | Common Report Var(flag_variable_expansion_in_unroller) Optimization |
c85ce869 | 1888 | Apply variable expansion when loops are unrolled |
f37a4f14 | 1889 | |
b38f3813 EB |
1890 | fstack-check= |
1891 | Common Report RejectNegative Joined | |
1892 | -fstack-check=[no|generic|specific] Insert stack checking code into the program | |
1893 | ||
6ff3a151 | 1894 | fstack-check |
5de8299c | 1895 | Common Alias(fstack-check=, specific, no) |
b38f3813 | 1896 | Insert stack checking code into the program. Same as -fstack-check=specific |
6ff3a151 | 1897 | |
de32c0cb | 1898 | fstack-limit |
21bf1558 | 1899 | Common Var(common_deferred_options) Defer |
de32c0cb | 1900 | |
058de654 | 1901 | fstack-limit-register= |
21bf1558 | 1902 | Common RejectNegative Joined Var(common_deferred_options) Defer |
cf03fd63 | 1903 | -fstack-limit-register=<register> Trap if the stack goes past <register> |
058de654 NB |
1904 | |
1905 | fstack-limit-symbol= | |
21bf1558 | 1906 | Common RejectNegative Joined Var(common_deferred_options) Defer |
cf03fd63 | 1907 | -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name> |
058de654 | 1908 | |
7d69de61 RH |
1909 | fstack-protector |
1910 | Common Report Var(flag_stack_protect, 1) | |
1911 | Use propolice as a stack protection method | |
1912 | ||
1913 | fstack-protector-all | |
f0036cca | 1914 | Common Report RejectNegative Var(flag_stack_protect, 2) |
7d69de61 RH |
1915 | Use a stack protection method for every function |
1916 | ||
d3c12306 EB |
1917 | fstack-usage |
1918 | Common RejectNegative Var(flag_stack_usage) | |
1919 | Output stack usage information on a per-function basis | |
1920 | ||
de32c0cb | 1921 | fstrength-reduce |
2d2bd949 | 1922 | Common Ignore |
c0220ea4 | 1923 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1924 | |
31b66477 KC |
1925 | ; Nonzero if we should do (language-dependent) alias analysis. |
1926 | ; Typically, this analysis will assume that expressions of certain | |
1927 | ; types do not alias expressions of certain other types. Only used | |
1928 | ; if alias analysis (in general) is enabled. | |
6ff3a151 | 1929 | fstrict-aliasing |
c662432e | 1930 | Common Report Var(flag_strict_aliasing) Optimization |
f3fdaec4 | 1931 | Assume strict aliasing rules apply |
6ff3a151 | 1932 | |
eeef0e45 ILT |
1933 | fstrict-overflow |
1934 | Common Report Var(flag_strict_overflow) | |
1935 | Treat signed overflow as undefined | |
1936 | ||
e8053cf5 RH |
1937 | fsync-libcalls |
1938 | Common Report Var(flag_sync_libcalls) Init(1) | |
1939 | Implement __atomic operations via libcalls to legacy __sync functions | |
1940 | ||
de32c0cb | 1941 | fsyntax-only |
50431bc4 | 1942 | Common Report Var(flag_syntax_only) |
f3fdaec4 | 1943 | Check for syntax errors, then stop |
de32c0cb | 1944 | |
6ff3a151 | 1945 | ftest-coverage |
50431bc4 | 1946 | Common Report Var(flag_test_coverage) |
f3fdaec4 | 1947 | Create data files needed by \"gcov\" |
6ff3a151 | 1948 | |
de32c0cb | 1949 | fthread-jumps |
c662432e | 1950 | Common Report Var(flag_thread_jumps) Optimization |
f3fdaec4 | 1951 | Perform jump threading optimizations |
de32c0cb | 1952 | |
6ff3a151 | 1953 | ftime-report |
50431bc4 | 1954 | Common Report Var(time_report) |
f3fdaec4 | 1955 | Report the time taken by each compiler pass |
6ff3a151 | 1956 | |
058de654 | 1957 | ftls-model= |
e6d4b984 | 1958 | Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) |
cf03fd63 | 1959 | -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model |
058de654 | 1960 | |
e6d4b984 JM |
1961 | Enum |
1962 | Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) | |
1963 | ||
1964 | EnumValue | |
1965 | Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) | |
1966 | ||
1967 | EnumValue | |
1968 | Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) | |
1969 | ||
1970 | EnumValue | |
1971 | Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) | |
1972 | ||
1973 | EnumValue | |
1974 | Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) | |
1975 | ||
474eccc6 | 1976 | ftoplevel-reorder |
d6cc6ec9 | 1977 | Common Report Var(flag_toplevel_reorder) Init(2) Optimization |
474eccc6 ILT |
1978 | Reorder top level functions, variables, and asms |
1979 | ||
de32c0cb | 1980 | ftracer |
50431bc4 | 1981 | Common Report Var(flag_tracer) |
f3fdaec4 | 1982 | Perform superblock formation via tail duplication |
de32c0cb | 1983 | |
31b66477 KC |
1984 | ; Zero means that floating-point math operations cannot generate a |
1985 | ; (user-visible) trap. This is the case, for example, in nonstop | |
1986 | ; IEEE 754 arithmetic. | |
6ff3a151 | 1987 | ftrapping-math |
5e46b0c6 | 1988 | Common Report Var(flag_trapping_math) Init(1) Optimization SetByCombined |
f3fdaec4 | 1989 | Assume floating-point operations can trap |
6ff3a151 NB |
1990 | |
1991 | ftrapv | |
c662432e | 1992 | Common Report Var(flag_trapv) Optimization |
f3fdaec4 | 1993 | Trap for signed overflow in addition, subtraction and multiplication |
6ff3a151 | 1994 | |
6de9cd9a | 1995 | ftree-ccp |
c662432e | 1996 | Common Report Var(flag_tree_ccp) Optimization |
6de9cd9a DN |
1997 | Enable SSA-CCP optimization on trees |
1998 | ||
0b4b14ac RG |
1999 | ftree-bit-ccp |
2000 | Common Report Var(flag_tree_bit_ccp) Optimization | |
2001 | Enable SSA-BIT-CCP optimization on trees | |
2002 | ||
0bca51f0 | 2003 | ftree-store-ccp |
2d2bd949 | 2004 | Common Ignore |
dce2b2f6 | 2005 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 2006 | |
6de9cd9a | 2007 | ftree-ch |
c662432e | 2008 | Common Report Var(flag_tree_ch) Optimization |
6de9cd9a DN |
2009 | Enable loop header copying on trees |
2010 | ||
21d01365 AO |
2011 | ftree-coalesce-inlined-vars |
2012 | Common Report Var(flag_ssa_coalesce_vars,1) Init(2) RejectNegative Optimization | |
2013 | Enable coalescing of copy-related user variables that are inlined | |
2014 | ||
2015 | ftree-coalesce-vars | |
2016 | Common Report Var(flag_ssa_coalesce_vars,2) Optimization | |
2017 | Enable coalescing of all copy-related user variables | |
2018 | ||
6de9cd9a | 2019 | ftree-copyrename |
c662432e | 2020 | Common Report Var(flag_tree_copyrename) Optimization |
c85ce869 | 2021 | Replace SSA temporaries with better names in copies |
6de9cd9a | 2022 | |
0bca51f0 | 2023 | ftree-copy-prop |
c662432e | 2024 | Common Report Var(flag_tree_copy_prop) Optimization |
0bca51f0 DN |
2025 | Enable copy propagation on trees |
2026 | ||
2027 | ftree-store-copy-prop | |
2d2bd949 | 2028 | Common Ignore |
e9033855 | 2029 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 2030 | |
a5828d1e MM |
2031 | ftree-cselim |
2032 | Common Report Var(flag_tree_cselim) Init(2) Optimization | |
2033 | Transform condition stores into unconditional ones | |
2034 | ||
b6e99746 MJ |
2035 | ftree-switch-conversion |
2036 | Common Report Var(flag_tree_switch_conversion) Optimization | |
2037 | Perform conversions of switch initializations. | |
2038 | ||
6de9cd9a | 2039 | ftree-dce |
c662432e | 2040 | Common Report Var(flag_tree_dce) Optimization |
6de9cd9a DN |
2041 | Enable SSA dead code elimination optimization on trees |
2042 | ||
2043 | ftree-dominator-opts | |
c662432e | 2044 | Common Report Var(flag_tree_dom) Optimization |
6de9cd9a DN |
2045 | Enable dominator optimizations |
2046 | ||
c9e93168 TV |
2047 | ftree-tail-merge |
2048 | Common Report Var(flag_tree_tail_merge) Optimization | |
2049 | Enable tail merging on trees | |
2050 | ||
6de9cd9a | 2051 | ftree-dse |
c662432e | 2052 | Common Report Var(flag_tree_dse) Optimization |
6de9cd9a DN |
2053 | Enable dead store elimination |
2054 | ||
248fc9f3 RG |
2055 | ftree-forwprop |
2056 | Common Report Var(flag_tree_forwprop) Init(1) Optimization | |
2057 | Enable forward propagation on trees | |
2058 | ||
ff2ad0f7 | 2059 | ftree-fre |
c662432e | 2060 | Common Report Var(flag_tree_fre) Optimization |
ff2ad0f7 DN |
2061 | Enable Full Redundancy Elimination (FRE) on trees |
2062 | ||
8b57bfeb JJ |
2063 | foptimize-strlen |
2064 | Common Report Var(flag_optimize_strlen) Optimization | |
2065 | Enable string length optimizations on trees | |
2066 | ||
dea61d92 | 2067 | ftree-loop-distribution |
53ed2f0e | 2068 | Common Report Var(flag_tree_loop_distribution) Optimization |
dea61d92 SP |
2069 | Enable loop distribution on trees |
2070 | ||
20769d5e SP |
2071 | ftree-loop-distribute-patterns |
2072 | Common Report Var(flag_tree_loop_distribute_patterns) Optimization | |
2073 | Enable loop distribution for patterns transformed into a library call | |
2074 | ||
1b08d87d | 2075 | ftree-loop-im |
c662432e | 2076 | Common Report Var(flag_tree_loop_im) Init(1) Optimization |
a7e5372d ZD |
2077 | Enable loop invariant motion on trees |
2078 | ||
599eabdb | 2079 | ftree-loop-linear |
7633415c SP |
2080 | Common Alias(floop-interchange) |
2081 | Enable loop interchange transforms. Same as -floop-interchange | |
599eabdb | 2082 | |
1b08d87d | 2083 | ftree-loop-ivcanon |
c662432e | 2084 | Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization |
1b08d87d DB |
2085 | Create canonical induction variables in loops |
2086 | ||
c66b6c66 | 2087 | ftree-loop-optimize |
c662432e | 2088 | Common Report Var(flag_tree_loop_optimize) Init(1) Optimization |
c66b6c66 ZD |
2089 | Enable loop optimizations on tree level |
2090 | ||
5f40b3cb | 2091 | ftree-parallelize-loops= |
fcfbd84e | 2092 | Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) |
5f40b3cb ZD |
2093 | Enable automatic parallelization of loops |
2094 | ||
248fc9f3 RG |
2095 | ftree-phiprop |
2096 | Common Report Var(flag_tree_phiprop) Init(1) Optimization | |
2097 | Enable hoisting loads from conditional pointers. | |
2098 | ||
6de9cd9a | 2099 | ftree-pre |
c662432e | 2100 | Common Report Var(flag_tree_pre) Optimization |
6de9cd9a DN |
2101 | Enable SSA-PRE optimization on trees |
2102 | ||
fa06ad0d JR |
2103 | ftree-partial-pre |
2104 | Common Report Var(flag_tree_partial_pre) Optimization | |
2105 | In SSA-PRE optimization on trees, enable partial-partial redundancy elimination | |
2106 | ||
248fc9f3 RG |
2107 | ftree-pta |
2108 | Common Report Var(flag_tree_pta) Init(1) Optimization | |
2109 | Perform function-local points-to analysis on trees. | |
2110 | ||
13c59415 UB |
2111 | ftree-reassoc |
2112 | Common Report Var(flag_tree_reassoc) Init(1) Optimization | |
2113 | Enable reassociation on tree level | |
2114 | ||
c75ab022 | 2115 | ftree-salias |
2d2bd949 | 2116 | Common Ignore |
1353232d | 2117 | Does nothing. Preserved for backward compatibility. |
c75ab022 | 2118 | |
fa555252 | 2119 | ftree-sink |
c662432e | 2120 | Common Report Var(flag_tree_sink) Optimization |
fa555252 DB |
2121 | Enable SSA code sinking on trees |
2122 | ||
75cfe445 BS |
2123 | ftree-slsr |
2124 | Common Report Var(flag_tree_slsr) Optimization | |
2125 | Perform straight-line strength reduction | |
2126 | ||
6de9cd9a | 2127 | ftree-sra |
c662432e | 2128 | Common Report Var(flag_tree_sra) Optimization |
6de9cd9a DN |
2129 | Perform scalar replacement of aggregates |
2130 | ||
2131 | ftree-ter | |
3020190e | 2132 | Common Report Var(flag_tree_ter) Optimization |
6de9cd9a DN |
2133 | Replace temporary expressions in the SSA->normal pass |
2134 | ||
c662432e NC |
2135 | ftree-lrs |
2136 | Common Report Var(flag_tree_live_range_split) Optimization | |
2137 | Perform live range splitting during the SSA->normal pass | |
2138 | ||
0bca51f0 | 2139 | ftree-vrp |
c662432e | 2140 | Common Report Var(flag_tree_vrp) Init(0) Optimization |
0bca51f0 DN |
2141 | Perform Value Range Propagation on trees |
2142 | ||
de32c0cb | 2143 | funit-at-a-time |
d6cc6ec9 | 2144 | Common Report Var(flag_unit_at_a_time) Init(1) Optimization |
f3fdaec4 | 2145 | Compile whole compilation unit at a time |
de32c0cb NB |
2146 | |
2147 | funroll-loops | |
c662432e | 2148 | Common Report Var(flag_unroll_loops) Optimization |
f3fdaec4 | 2149 | Perform loop unrolling when iteration count is known |
de32c0cb NB |
2150 | |
2151 | funroll-all-loops | |
c662432e | 2152 | Common Report Var(flag_unroll_all_loops) Optimization |
f3fdaec4 | 2153 | Perform loop unrolling for all loops |
de32c0cb | 2154 | |
f9cc1a70 PB |
2155 | ; Nonzero means that loop optimizer may assume that the induction variables |
2156 | ; that control loops do not overflow and that the loops with nontrivial | |
2157 | ; exit condition are not infinite | |
2158 | funsafe-loop-optimizations | |
c662432e | 2159 | Common Report Var(flag_unsafe_loop_optimizations) Optimization |
f9cc1a70 PB |
2160 | Allow loop optimizations to assume that the loops behave in normal way |
2161 | ||
a1a82611 | 2162 | fassociative-math |
5e46b0c6 | 2163 | Common Report Var(flag_associative_math) SetByCombined |
a1a82611 RE |
2164 | Allow optimization for floating-point arithmetic which may change the |
2165 | result of the operation due to rounding. | |
2166 | ||
2167 | freciprocal-math | |
5e46b0c6 | 2168 | Common Report Var(flag_reciprocal_math) SetByCombined |
a1a82611 RE |
2169 | Same as -fassociative-math for expressions which include division. |
2170 | ||
31b66477 KC |
2171 | ; Nonzero means that unsafe floating-point math optimizations are allowed |
2172 | ; for the sake of speed. IEEE compliance is not guaranteed, and operations | |
2173 | ; are allowed to assume that their arguments and results are "normal" | |
2174 | ; (e.g., nonnegative for SQRT). | |
6ff3a151 | 2175 | funsafe-math-optimizations |
5e46b0c6 | 2176 | Common Report Var(flag_unsafe_math_optimizations) Optimization SetByCombined |
f3fdaec4 | 2177 | Allow math optimizations that may violate IEEE or ISO standards |
6ff3a151 | 2178 | |
de32c0cb | 2179 | funswitch-loops |
c662432e | 2180 | Common Report Var(flag_unswitch_loops) Optimization |
f3fdaec4 | 2181 | Perform loop unswitching |
de32c0cb | 2182 | |
6ff3a151 | 2183 | funwind-tables |
c662432e | 2184 | Common Report Var(flag_unwind_tables) Optimization |
f3fdaec4 | 2185 | Just generate unwind tables for exception handling |
6ff3a151 | 2186 | |
b352afba NC |
2187 | fuse-ld=bfd |
2188 | Common Negative(fuse-ld=gold) | |
2189 | Use the bfd linker instead of the default linker | |
2190 | ||
2191 | fuse-ld=gold | |
2192 | Common Negative(fuse-ld=bfd) | |
2193 | Use the gold linker instead of the default linker | |
2194 | ||
da18ea94 RAE |
2195 | fuse-linker-plugin |
2196 | Common Undocumented | |
2197 | ||
e90afde6 JM |
2198 | ; Positive if we should track variables, negative if we should run |
2199 | ; the var-tracking pass only to discard debug annotations, zero if | |
2200 | ; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it | |
2201 | ; will be set according to optimize, debug_info_level and debug_hooks | |
2202 | ; in process_options (). | |
014a1138 | 2203 | fvar-tracking |
e90afde6 | 2204 | Common Report Var(flag_var_tracking) Init(2) Optimization |
014a1138 JZ |
2205 | Perform variable tracking |
2206 | ||
e90afde6 JM |
2207 | ; Positive if we should track variables at assignments, negative if |
2208 | ; we should run the var-tracking pass only to discard debug | |
2209 | ; annotations. When flag_var_tracking_assignments == | |
2210 | ; AUTODETECT_VALUE it will be set according to flag_var_tracking. | |
b5b8b0ac | 2211 | fvar-tracking-assignments |
e90afde6 | 2212 | Common Report Var(flag_var_tracking_assignments) Init(2) Optimization |
b5b8b0ac AO |
2213 | Perform variable tracking by annotating assignments |
2214 | ||
e90afde6 JM |
2215 | ; Nonzero if we should toggle flag_var_tracking_assignments after |
2216 | ; processing options and computing its default. */ | |
b5b8b0ac | 2217 | fvar-tracking-assignments-toggle |
e90afde6 | 2218 | Common Report Var(flag_var_tracking_assignments_toggle) Optimization |
b5b8b0ac AO |
2219 | Toggle -fvar-tracking-assignments |
2220 | ||
1267ca30 EB |
2221 | ; Positive if we should track uninitialized variables, negative if |
2222 | ; we should run the var-tracking pass only to discard debug | |
2223 | ; annotations. When flag_var_tracking_uninit == AUTODETECT_VALUE it | |
2224 | ; will be set according to flag_var_tracking. | |
62760ffd CT |
2225 | fvar-tracking-uninit |
2226 | Common Report Var(flag_var_tracking_uninit) Optimization | |
2227 | Perform variable tracking and also tag variables that are uninitialized | |
2228 | ||
79fe1b3b | 2229 | ftree-vectorize |
c662432e | 2230 | Common Report Var(flag_tree_vectorize) Optimization |
79fe1b3b DN |
2231 | Enable loop vectorization on trees |
2232 | ||
78c60e3d SS |
2233 | ftree-vectorizer-verbose= |
2234 | Common RejectNegative Joined UInteger Var(common_deferred_options) Defer | |
2235 | -ftree-vectorizer-verbose=<number> This switch is deprecated. Use -fopt-info instead. | |
2236 | ||
a70d6342 IR |
2237 | ftree-slp-vectorize |
2238 | Common Report Var(flag_tree_slp_vectorize) Init(2) Optimization | |
2239 | Enable basic block vectorization (SLP) on trees | |
2240 | ||
792ed98b HJ |
2241 | fvect-cost-model |
2242 | Common Report Var(flag_vect_cost_model) Optimization | |
2243 | Enable use of cost model in vectorization | |
2244 | ||
c12cc930 | 2245 | ftree-vect-loop-version |
c662432e | 2246 | Common Report Var(flag_tree_vect_loop_version) Init(1) Optimization |
c12cc930 KB |
2247 | Enable loop versioning when doing loop vectorization on trees |
2248 | ||
fbf798fc | 2249 | ftree-scev-cprop |
21af5cdf | 2250 | Common Report Var(flag_tree_scev_cprop) Init(1) Optimization |
fbf798fc DN |
2251 | Enable copy propagation of scalar-evolution information. |
2252 | ||
31b66477 KC |
2253 | ; -fverbose-asm causes extra commentary information to be produced in |
2254 | ; the generated assembly code (to make it more readable). This option | |
2255 | ; is generally only of use to those who actually need to read the | |
2256 | ; generated assembly code (perhaps while debugging the compiler itself). | |
2257 | ; -fno-verbose-asm, the default, causes the extra information | |
2258 | ; to not be added and is useful when comparing two assembler files. | |
6ff3a151 | 2259 | fverbose-asm |
50431bc4 | 2260 | Common Report Var(flag_verbose_asm) |
f3fdaec4 | 2261 | Add extra commentary to assembler output |
6ff3a151 | 2262 | |
d7afec4b | 2263 | fvisibility= |
e6d4b984 | 2264 | Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) |
d7afec4b ND |
2265 | -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility |
2266 | ||
e6d4b984 JM |
2267 | Enum |
2268 | Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) | |
2269 | ||
2270 | EnumValue | |
2271 | Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) | |
2272 | ||
2273 | EnumValue | |
2274 | Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) | |
2275 | ||
2276 | EnumValue | |
2277 | Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) | |
2278 | ||
2279 | EnumValue | |
2280 | Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) | |
d7afec4b | 2281 | |
fca9dc00 | 2282 | fvpt |
c662432e | 2283 | Common Report Var(flag_value_profile_transformations) Optimization |
fca9dc00 ZD |
2284 | Use expression value profiles in optimizations |
2285 | ||
62551c66 | 2286 | fweb |
c662432e | 2287 | Common Report Var(flag_web) Init(2) Optimization |
62551c66 JH |
2288 | Construct webs and split unrelated uses of single variable |
2289 | ||
c2699190 XDL |
2290 | ftree-builtin-call-dce |
2291 | Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization | |
2292 | Enable conditional dead code elimination for builtin calls | |
2293 | ||
ce91e74c | 2294 | fwhole-program |
c662432e | 2295 | Common Report Var(flag_whole_program) Init(0) Optimization |
ce91e74c JH |
2296 | Perform whole program optimizations |
2297 | ||
6ff3a151 | 2298 | fwrapv |
c662432e | 2299 | Common Report Var(flag_wrapv) Optimization |
f3fdaec4 | 2300 | Assume signed arithmetic overflow wraps around |
6ff3a151 | 2301 | |
6ff3a151 | 2302 | fzero-initialized-in-bss |
50431bc4 | 2303 | Common Report Var(flag_zero_initialized_in_bss) Init(1) |
f3fdaec4 | 2304 | Put zero initialized data in the bss section |
6ff3a151 | 2305 | |
e01cc6dc NB |
2306 | g |
2307 | Common JoinedOrMissing | |
df38ffef NB |
2308 | Generate debug information in default format |
2309 | ||
2310 | gcoff | |
6782438d | 2311 | Common JoinedOrMissing Negative(gdwarf) |
df38ffef NB |
2312 | Generate debug information in COFF format |
2313 | ||
6782438d SKS |
2314 | gdwarf |
2315 | Common JoinedOrMissing Negative(gdwarf-) | |
2316 | Generate debug information in default version of DWARF format | |
2317 | ||
53b2323e | 2318 | gdwarf- |
98095aa3 | 2319 | Common Joined UInteger Var(dwarf_version) Init(4) Negative(gstabs) |
53b2323e | 2320 | Generate debug information in DWARF v2 (or later) format |
df38ffef NB |
2321 | |
2322 | ggdb | |
2323 | Common JoinedOrMissing | |
2324 | Generate debug information in default extended format | |
2325 | ||
5175cbaf SA |
2326 | gno-pubnames |
2327 | Common RejectNegative Var(debug_generate_pub_sections, 0) Init(-1) | |
2328 | Don't generate DWARF pubnames and pubtypes sections. | |
2329 | ||
2330 | gpubnames | |
2331 | Common RejectNegative Var(debug_generate_pub_sections, 1) | |
2332 | Generate DWARF pubnames and pubtypes sections. | |
2333 | ||
e967adf4 | 2334 | gno-record-gcc-switches |
98095aa3 | 2335 | Common RejectNegative Var(dwarf_record_gcc_switches,0) Init(1) |
e967adf4 JJ |
2336 | Don't record gcc command line switches in DWARF DW_AT_producer. |
2337 | ||
2338 | grecord-gcc-switches | |
2339 | Common RejectNegative Var(dwarf_record_gcc_switches,1) | |
2340 | Record gcc command line switches in DWARF DW_AT_producer. | |
2341 | ||
99ea153e SA |
2342 | gno-split-dwarf |
2343 | Common Driver RejectNegative Var(dwarf_split_debug_info,0) Init(0) | |
2344 | Don't generate debug information in separate .dwo files | |
2345 | ||
2346 | gsplit-dwarf | |
2347 | Common Driver RejectNegative Var(dwarf_split_debug_info,1) | |
2348 | Generate debug information in separate .dwo files | |
2349 | ||
df38ffef | 2350 | gstabs |
14c7833c | 2351 | Common JoinedOrMissing Negative(gstabs+) |
df38ffef NB |
2352 | Generate debug information in STABS format |
2353 | ||
2354 | gstabs+ | |
14c7833c | 2355 | Common JoinedOrMissing Negative(gvms) |
df38ffef NB |
2356 | Generate debug information in extended STABS format |
2357 | ||
65f753a0 | 2358 | gno-strict-dwarf |
98095aa3 | 2359 | Common RejectNegative Var(dwarf_strict,0) Init(0) |
65f753a0 JJ |
2360 | Emit DWARF additions beyond selected version |
2361 | ||
2362 | gstrict-dwarf | |
f0036cca | 2363 | Common Report RejectNegative Var(dwarf_strict,1) |
65f753a0 JJ |
2364 | Don't emit DWARF additions beyond selected version |
2365 | ||
2153915d AO |
2366 | gtoggle |
2367 | Common Report Var(flag_gtoggle) | |
2368 | Toggle debug information generation | |
2369 | ||
df38ffef | 2370 | gvms |
14c7833c | 2371 | Common JoinedOrMissing Negative(gxcoff) |
df38ffef NB |
2372 | Generate debug information in VMS format |
2373 | ||
2374 | gxcoff | |
14c7833c | 2375 | Common JoinedOrMissing Negative(gxcoff+) |
df38ffef NB |
2376 | Generate debug information in XCOFF format |
2377 | ||
2378 | gxcoff+ | |
14c7833c | 2379 | Common JoinedOrMissing Negative(gcoff) |
df38ffef | 2380 | Generate debug information in extended XCOFF format |
e01cc6dc | 2381 | |
6d721f67 JM |
2382 | h |
2383 | Driver Joined Separate | |
2384 | ||
4adbd5dd MK |
2385 | iplugindir= |
2386 | Common Joined Var(plugindir_string) Init(0) | |
2387 | -iplugindir=<dir> Set <dir> to be the default plugin directory | |
2388 | ||
e0cdc09f MK |
2389 | imultiarch |
2390 | Common Joined Separate RejectDriver Var(imultiarch) Init(0) | |
2391 | -imultiarch <dir> Set <dir> to be the multiarch include subdirectory | |
2392 | ||
603349bf JM |
2393 | l |
2394 | Driver Joined Separate | |
2395 | ||
dd9f93dc JM |
2396 | n |
2397 | Driver | |
2398 | ||
603349bf JM |
2399 | no-canonical-prefixes |
2400 | Driver | |
2401 | ||
d9d16a19 JM |
2402 | nodefaultlibs |
2403 | Driver | |
2404 | ||
bab79a40 JM |
2405 | nostartfiles |
2406 | Driver | |
2407 | ||
d9d16a19 JM |
2408 | nostdlib |
2409 | Driver | |
2410 | ||
d185d268 | 2411 | o |
d5478783 | 2412 | Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) |
cf03fd63 | 2413 | -o <file> Place output into <file> |
d185d268 NB |
2414 | |
2415 | p | |
50431bc4 | 2416 | Common Var(profile_flag) |
cf03fd63 | 2417 | Enable function profiling |
d185d268 | 2418 | |
603349bf JM |
2419 | pass-exit-codes |
2420 | Driver Var(pass_exit_codes) | |
2421 | ||
d185d268 | 2422 | pedantic |
c1771a20 | 2423 | Common Alias(Wpedantic) |
d185d268 NB |
2424 | |
2425 | pedantic-errors | |
d5478783 | 2426 | Common Var(flag_pedantic_errors) |
cf03fd63 | 2427 | Like -pedantic but issue them as errors |
d185d268 | 2428 | |
d9d16a19 JM |
2429 | pg |
2430 | Driver | |
2431 | ||
603349bf JM |
2432 | pipe |
2433 | Driver Var(use_pipes) | |
2434 | ||
2435 | print-file-name= | |
2436 | Driver JoinedOrMissing Var(print_file_name) | |
2437 | ||
2438 | print-libgcc-file-name | |
2439 | Driver | |
2440 | ||
2441 | print-multi-directory | |
2442 | Driver Var(print_multi_directory) | |
2443 | ||
2444 | print-multi-lib | |
2445 | Driver Var(print_multi_lib) | |
2446 | ||
2447 | print-multi-os-directory | |
2448 | Driver Var(print_multi_os_directory) | |
e0cdc09f MK |
2449 | |
2450 | print-multiarch | |
2451 | Driver Var(print_multiarch) | |
603349bf JM |
2452 | |
2453 | print-prog-name= | |
2454 | Driver JoinedOrMissing Var(print_prog_name) | |
2455 | ||
2456 | print-search-dirs | |
2457 | Driver Var(print_search_dirs) | |
2458 | ||
2459 | print-sysroot | |
2460 | Driver Var(print_sysroot) | |
2461 | ||
2462 | print-sysroot-headers-suffix | |
2463 | Driver Var(print_sysroot_headers_suffix) | |
2464 | ||
d7b42618 | 2465 | quiet |
603349bf | 2466 | Common Var(quiet_flag) RejectDriver |
cf03fd63 | 2467 | Do not display functions compiled or elapsed time |
d7b42618 | 2468 | |
dd9f93dc JM |
2469 | r |
2470 | Driver | |
2471 | ||
2472 | s | |
2473 | Driver | |
2474 | ||
603349bf JM |
2475 | save-temps |
2476 | Driver | |
2477 | ||
2478 | save-temps= | |
2479 | Driver Joined | |
2480 | ||
dd9f93dc JM |
2481 | t |
2482 | Driver | |
2483 | ||
603349bf JM |
2484 | time |
2485 | Driver Var(report_times) | |
2486 | ||
2487 | time= | |
2488 | Driver JoinedOrMissing | |
2489 | ||
e200444e JM |
2490 | u |
2491 | Driver Joined Separate | |
2492 | ||
5642f5d5 JM |
2493 | undef |
2494 | Driver | |
2495 | ; C option, but driver must not handle as "-u ndef". | |
2496 | ||
603349bf | 2497 | v |
d5478783 JM |
2498 | Common Driver Var(verbose_flag) |
2499 | Enable verbose output | |
603349bf | 2500 | |
d185d268 | 2501 | version |
603349bf | 2502 | Common Var(version_flag) RejectDriver |
cf03fd63 | 2503 | Display the compiler's version |
d185d268 NB |
2504 | |
2505 | w | |
50431bc4 | 2506 | Common Var(inhibit_warnings) |
cf03fd63 | 2507 | Suppress warnings |
d185d268 | 2508 | |
603349bf JM |
2509 | wrapper |
2510 | Driver Separate Var(wrapper_string) | |
2511 | ||
2512 | x | |
2513 | Driver Joined Separate | |
2514 | ||
528dc603 | 2515 | shared |
5460e1fc | 2516 | Driver RejectNegative Negative(pie) |
528dc603 L |
2517 | Create a shared library |
2518 | ||
603349bf JM |
2519 | shared-libgcc |
2520 | Driver | |
2521 | ||
2522 | specs | |
5de8299c | 2523 | Driver Separate Alias(specs=) |
603349bf JM |
2524 | |
2525 | specs= | |
2526 | Driver Joined | |
2527 | ||
d9d16a19 JM |
2528 | static |
2529 | Driver | |
2530 | ||
603349bf JM |
2531 | static-libgcc |
2532 | Driver | |
2533 | ||
2534 | static-libgfortran | |
2535 | Driver | |
2536 | ; Documented for Fortran, but always accepted by driver. | |
2537 | ||
2538 | static-libstdc++ | |
2539 | Driver | |
2540 | ||
7a938933 ILT |
2541 | static-libgo |
2542 | Driver | |
2543 | ; Documented for Go, but always accepted by driver. | |
2544 | ||
7e8d1b2d L |
2545 | static-libasan |
2546 | Driver | |
2547 | ||
32b4b7f5 DV |
2548 | static-libtsan |
2549 | Driver | |
2550 | ||
e200444e JM |
2551 | symbolic |
2552 | Driver | |
2553 | ||
528dc603 | 2554 | pie |
5460e1fc | 2555 | Driver RejectNegative Negative(shared) |
528dc603 L |
2556 | Create a position independent executable |
2557 | ||
6d721f67 JM |
2558 | z |
2559 | Driver Joined Separate | |
2560 | ||
d7b42618 | 2561 | ; This comment is to ensure we retain the blank line above. |