]>
Commit | Line | Data |
---|---|---|
3272db82 | 1 | ; Options for the language- and target-independent parts of the compiler. |
2e9da478 | 2 | |
ecee1b29 | 3 | ; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
7765591b | 4 | ; Free Software Foundation, Inc. |
3272db82 | 5 | ; |
6 | ; This file is part of GCC. | |
7 | ; | |
8 | ; GCC is free software; you can redistribute it and/or modify it under | |
9 | ; the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 10 | ; Software Foundation; either version 3, or (at your option) any later |
3272db82 | 11 | ; version. |
a0c938f0 | 12 | ; |
3272db82 | 13 | ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | ; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | ; for more details. | |
a0c938f0 | 17 | ; |
3272db82 | 18 | ; You should have received a copy of the GNU General Public License |
8c4c00c1 | 19 | ; along with GCC; see the file COPYING3. If not see |
20 | ; <http://www.gnu.org/licenses/>. | |
3272db82 | 21 | |
a4b0007b | 22 | ; See the GCC internals manual (options.texi) for a description of this file's format. |
3272db82 | 23 | |
24 | ; Please try to keep this file in ASCII collating order. | |
25 | ||
0f8defe5 | 26 | Variable |
27 | int target_flags | |
28 | ||
2c5d2e39 | 29 | Variable |
30 | int optimize | |
31 | ||
32 | Variable | |
33 | int optimize_size | |
34 | ||
f3f006ad | 35 | ; 0 means straightforward implementation of complex divide acceptable. |
36 | ; 1 means wide ranges of inputs must work for complex divide. | |
37 | ; 2 means C99-like requirements for complex multiply and divide. | |
38 | Variable | |
39 | int flag_complex_method = 1 | |
40 | ||
41 | ; Nonzero if subexpressions must be evaluated from left-to-right. | |
42 | Variable | |
43 | int flag_evaluation_order = 0 | |
44 | ||
f3f006ad | 45 | ; Language specific warning pass for unused results. |
46 | Variable | |
47 | bool flag_warn_unused_result = false | |
48 | ||
56f280c4 | 49 | Variable |
50 | int *param_values | |
51 | ||
6bd9d862 | 52 | ; Nonzero if we should write GIMPLE bytecode for link-time optimization. |
53 | Variable | |
54 | int flag_generate_lto | |
55 | ||
56 | ; True to warn about any objects definitions whose size is larger | |
57 | ; than N bytes. Also want about function definitions whose returned | |
58 | ; values are larger than N bytes, where N is 'larger_than_size'. | |
59 | Variable | |
60 | bool warn_larger_than | |
61 | ||
62 | Variable | |
63 | HOST_WIDE_INT larger_than_size | |
64 | ||
65 | ; True to warn about any function whose frame size is larger | |
66 | ; than N bytes. | |
67 | Variable | |
68 | bool warn_frame_larger_than | |
69 | ||
70 | Variable | |
71 | HOST_WIDE_INT frame_larger_than_size | |
72 | ||
73 | ; Nonzero means we should be saving declaration info into a .X file. | |
74 | Variable | |
75 | int flag_gen_aux_info = 0 | |
76 | ||
77 | ; Nonzero if we are compiling code for a shared library, zero for | |
78 | ; executable. | |
79 | Variable | |
80 | int flag_shlib | |
81 | ||
470a0ecd | 82 | ; These two are really VEC(char_p,heap) *. |
83 | ||
84 | Variable | |
85 | void *flag_instrument_functions_exclude_functions | |
86 | ||
87 | Variable | |
88 | void *flag_instrument_functions_exclude_files | |
89 | ||
d7175aef | 90 | ; Generic structs (e.g. templates not explicitly specialized) |
91 | ; may not have a compilation unit associated with them, and so | |
92 | ; may need to be treated differently from ordinary structs. | |
93 | ; | |
94 | ; Structs only handled by reference (indirectly), will also usually | |
95 | ; not need as much debugging information. | |
96 | ||
97 | Variable | |
98 | enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
99 | ||
100 | Variable | |
101 | enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
102 | ||
cc4fa57a | 103 | ; True if we should exit after parsing options. |
104 | Variable | |
105 | bool exit_after_options | |
106 | ||
107 | ; Type(s) of debugging information we are producing (if any). See | |
108 | ; flag-types.h for the definitions of the different possible types of | |
109 | ; debugging information. | |
110 | Variable | |
111 | enum debug_info_type write_symbols = NO_DEBUG | |
112 | ||
113 | ; Level of debugging information we are producing. See flag-types.h | |
114 | ; for the definitions of the different possible levels. | |
115 | Variable | |
116 | enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE | |
117 | ||
118 | ; Nonzero means use GNU-only extensions in the generated symbolic | |
119 | ; debugging information. Currently, this only has an effect when | |
120 | ; write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. | |
121 | Variable | |
122 | bool use_gnu_debug_info_extensions | |
123 | ||
9faf44d6 | 124 | ; Original value of maximum field alignment in bytes, specified via |
125 | ; -fpack-struct=<value>. | |
126 | Variable | |
127 | unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT | |
128 | ||
295e1243 | 129 | Variable |
130 | enum vect_verbosity_levels user_vect_verbosity_level = MAX_VERBOSITY_LEVEL | |
131 | ||
ab3728ee | 132 | ; Type of stack check. |
133 | Variable | |
134 | enum stack_check_type flag_stack_check = NO_STACK_CHECK | |
135 | ||
9faf44d6 | 136 | ; -dA causes debug commentary information to be produced in |
137 | ; the generated assembly code (to make it more readable). This option | |
138 | ; is generally only of use to those who actually need to read the | |
139 | ; generated assembly code (perhaps while debugging the compiler itself). | |
140 | ; Currently, this switch is only used by dwarf2out.c; however, it is intended | |
141 | ; to be a catchall for printing debug information in the assembler file. | |
142 | Variable | |
143 | int flag_debug_asm | |
144 | ||
145 | ; -dP causes the rtl to be emitted as a comment in assembly. | |
146 | Variable | |
147 | int flag_dump_rtl_in_asm | |
148 | ||
149 | ; Whether -da was passed (used only in handle_common_deferred_options). | |
150 | Variable | |
151 | bool flag_dump_all_passed | |
152 | ||
153 | ; Other flags saying which kinds of debugging dump have been requested. | |
154 | ||
155 | Variable | |
156 | int rtl_dump_and_exit | |
157 | ||
158 | Variable | |
159 | int flag_print_asm_name | |
160 | ||
161 | Variable | |
162 | enum graph_dump_types graph_dump_format = no_graph | |
163 | ||
0e763b2a | 164 | ; Name of top-level original source file (what was input to cpp). |
165 | ; This comes from the #-command at the beginning of the actual input. | |
166 | ; If there isn't any there, then this is the cc1 input file name. | |
167 | Variable | |
168 | const char *main_input_filename | |
169 | ||
170 | ; Pointer to base name in main_input_filename, with directories and a | |
171 | ; single final extension removed, and the length of this base | |
172 | ; name. | |
173 | ||
174 | Variable | |
175 | const char *main_input_basename | |
176 | ||
177 | Variable | |
178 | int main_input_baselength | |
179 | ||
9faf44d6 | 180 | ; Which options have been printed by --help. |
181 | Variable | |
182 | char *help_printed | |
183 | ||
d62a5950 | 184 | ; Which enums have been printed by --help. 0 = not printed, no |
185 | ; relevant options seen, 1 = relevant option seen, not yet printed, 2 | |
186 | ; = printed. | |
187 | Variable | |
188 | char *help_enum_printed | |
189 | ||
9faf44d6 | 190 | ; The number of columns for --help output. |
191 | Variable | |
192 | unsigned int help_columns | |
193 | ||
194 | ; Whether this options structure has been through finish_options | |
195 | Variable | |
196 | bool flag_opts_finished | |
197 | ||
e28aa114 | 198 | ### |
199 | Driver | |
200 | ||
5789e05b | 201 | -assemble |
202 | Driver Alias(S) | |
203 | ||
204 | -compile | |
205 | Driver Alias(c) | |
206 | ||
207 | -coverage | |
208 | Driver Alias(coverage) | |
209 | ||
210 | -debug | |
211 | Common Alias(g) | |
212 | ||
213 | -dump | |
214 | Common Separate Alias(d) | |
215 | ||
216 | -dump= | |
217 | Common Joined Alias(d) | |
218 | ||
219 | -dumpbase | |
220 | Common Separate Alias(dumpbase) | |
221 | ||
222 | -dumpdir | |
223 | Common Separate Alias(dumpdir) | |
224 | ||
225 | -entry | |
226 | Driver Separate Alias(e) | |
227 | ||
228 | -entry= | |
229 | Driver Joined Alias(e) | |
230 | ||
231 | -extra-warnings | |
232 | Common Warning Alias(Wextra) | |
233 | ||
234 | -for-assembler | |
235 | Driver Separate Alias(Xassembler) | |
236 | ||
237 | -for-assembler= | |
238 | Driver JoinedOrMissing Alias(Xassembler) | |
239 | ||
240 | -for-linker | |
241 | Driver Separate Alias(Xlinker) | |
242 | ||
243 | -for-linker= | |
244 | Driver JoinedOrMissing Alias(Xlinker) | |
245 | ||
246 | -force-link | |
247 | Driver Separate Alias(u) | |
248 | ||
249 | -force-link= | |
250 | Driver Joined Alias(u) | |
251 | ||
e690b385 | 252 | -help |
5789e05b | 253 | Common Driver Var(help_flag) |
53b8e5c1 | 254 | Display this information |
e690b385 | 255 | |
87c75316 | 256 | -help= |
e28aa114 | 257 | Common Driver Report Joined |
87c75316 | 258 | --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params |
da3b1bab | 259 | |
5789e05b | 260 | -language |
261 | Driver Separate Alias(x) | |
262 | ||
263 | -language= | |
264 | Driver Joined Alias(x) | |
265 | ||
266 | -library-directory | |
267 | Driver Separate Alias(L) | |
268 | ||
269 | -library-directory= | |
270 | Driver Joined Alias(L) | |
271 | ||
272 | -no-canonical-prefixes | |
273 | Driver Alias(no-canonical-prefixes) | |
274 | ||
275 | -no-standard-libraries | |
276 | Driver Alias(nostdlib) | |
277 | ||
278 | -no-warnings | |
279 | Common Alias(w) | |
280 | ||
281 | -optimize | |
282 | Common Alias(O) | |
283 | ||
284 | -output | |
285 | Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) | |
286 | ||
287 | -output= | |
288 | Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) | |
289 | ||
290 | -pass-exit-codes | |
291 | Driver Alias(pass-exit-codes) | |
292 | ||
293 | -pedantic | |
294 | Common Alias(pedantic) | |
295 | ||
296 | -pedantic-errors | |
297 | Common Alias(pedantic-errors) | |
298 | ||
299 | -pie | |
300 | Common Alias(pie) | |
301 | ||
302 | -pipe | |
303 | Driver Alias(pipe) | |
304 | ||
305 | -prefix | |
306 | Driver Separate Alias(B) | |
307 | ||
308 | -prefix= | |
309 | Driver JoinedOrMissing Alias(B) | |
310 | ||
311 | -preprocess | |
312 | Driver Alias(E) | |
313 | ||
314 | -print-file-name | |
315 | Driver Separate Alias(print-file-name=) | |
316 | ||
317 | -print-file-name= | |
318 | Driver JoinedOrMissing Alias(print-file-name=) | |
319 | ||
320 | -print-libgcc-file-name | |
321 | Driver Alias(print-libgcc-file-name) | |
322 | ||
323 | -print-multi-directory | |
324 | Driver Alias(print-multi-directory) | |
325 | ||
326 | -print-multi-lib | |
327 | Driver Alias(print-multi-lib) | |
328 | ||
329 | -print-multi-os-directory | |
330 | Driver Alias(print-multi-os-directory) | |
331 | ||
332 | -print-prog-name | |
333 | Driver Separate Alias(print-prog-name=) | |
334 | ||
335 | -print-prog-name= | |
336 | Driver JoinedOrMissing Alias(print-prog-name=) | |
337 | ||
338 | -print-search-dirs | |
339 | Driver Alias(print-search-dirs) | |
340 | ||
341 | -print-sysroot | |
342 | Driver Alias(print-sysroot) | |
343 | ||
344 | -print-sysroot-headers-suffix | |
345 | Driver Alias(print-sysroot-headers-suffix) | |
346 | ||
347 | -profile | |
348 | Common Alias(p) | |
349 | ||
350 | -save-temps | |
351 | Driver Alias(save-temps) | |
352 | ||
353 | -shared | |
354 | Common Alias(shared) | |
355 | ||
356 | -specs | |
357 | Driver Separate Alias(specs=) | |
358 | ||
359 | -specs= | |
360 | Driver Joined Alias(specs=) | |
361 | ||
362 | -static | |
363 | Driver Alias(static) | |
364 | ||
365 | -symbolic | |
366 | Driver Alias(symbolic) | |
367 | ||
e690b385 | 368 | -target-help |
e28aa114 | 369 | Common Driver |
87c75316 | 370 | Alias for --help=target |
371 | ||
5789e05b | 372 | -time |
373 | Driver Alias(time) | |
374 | ||
375 | -verbose | |
376 | Driver Alias(v) | |
377 | ||
378 | ;; The driver used to convert options such as --help into forms such | |
379 | ;; as -fhelp; the following four entries are for compatibility with | |
380 | ;; any direct uses of those (undocumented) -f forms | |
87c75316 | 381 | fhelp |
5789e05b | 382 | Common Driver Alias(-help) |
87c75316 | 383 | |
384 | fhelp= | |
5789e05b | 385 | Common Driver Joined Alias(-help=) |
87c75316 | 386 | |
387 | ftarget-help | |
5789e05b | 388 | Common Driver Alias(-target-help) |
87c75316 | 389 | |
39932bd2 | 390 | fversion |
5789e05b | 391 | Common Driver Alias(-version) |
39932bd2 | 392 | |
87c75316 | 393 | -param |
394 | Common Separate | |
395 | --param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters | |
e690b385 | 396 | |
5789e05b | 397 | -param= |
398 | Common Joined Alias(-param) | |
399 | ||
400 | -sysroot | |
401 | Driver Separate Alias(-sysroot=) | |
402 | ||
e28aa114 | 403 | -sysroot= |
404 | Driver JoinedOrMissing | |
405 | ||
e690b385 | 406 | -version |
e28aa114 | 407 | Common Driver |
408 | ||
409 | B | |
410 | Driver Joined Separate | |
411 | ||
412 | E | |
413 | Driver | |
e690b385 | 414 | |
cb22f930 | 415 | L |
416 | Driver Joined Separate | |
417 | ||
3bfde2af | 418 | N |
419 | Driver | |
420 | ||
da3b1bab | 421 | O |
46f8e3b0 | 422 | Common JoinedOrMissing Optimization |
53b8e5c1 | 423 | -O<number> Set optimization level to <number> |
da3b1bab | 424 | |
425 | Os | |
46f8e3b0 | 426 | Common Optimization |
53b8e5c1 | 427 | Optimize for space rather than speed |
da3b1bab | 428 | |
1ebc0b9f | 429 | Ofast |
430 | Common Optimization | |
431 | Optimize for speed disregarding exact standards compliance | |
432 | ||
3bfde2af | 433 | Q |
434 | Driver | |
435 | ||
436 | Qn | |
437 | Driver Negative(Qy) | |
438 | ||
439 | Qy | |
440 | Driver Negative(Qn) | |
441 | ||
f37ef985 | 442 | R |
443 | Driver Joined Separate | |
444 | ||
e28aa114 | 445 | S |
446 | Driver | |
447 | ||
f37ef985 | 448 | T |
449 | Driver Joined Separate | |
450 | ||
451 | Tbss | |
452 | Driver Separate | |
453 | ||
454 | Tdata | |
455 | Driver Separate | |
456 | ||
457 | Ttext | |
458 | Driver Separate | |
459 | ||
da3b1bab | 460 | W |
67089c6b | 461 | Common RejectNegative Warning Alias(Wextra) |
bb0814ce | 462 | This switch is deprecated; use -Wextra instead |
da3b1bab | 463 | |
e28aa114 | 464 | Wa, |
465 | Driver JoinedOrMissing | |
466 | ||
467 | Wl, | |
468 | Driver JoinedOrMissing | |
469 | ||
470 | Wp, | |
471 | Driver JoinedOrMissing | |
472 | ||
6f2f567f | 473 | Waggregate-return |
87c75316 | 474 | Common Var(warn_aggregate_return) Warning |
bb0814ce | 475 | Warn about returning structures, unions or arrays |
6f2f567f | 476 | |
5bc96398 | 477 | Warray-bounds |
e8831472 | 478 | Common Var(warn_array_bounds) Warning |
5bc96398 | 479 | Warn if an array is accessed out of bounds |
480 | ||
9b2d6d13 | 481 | Wattributes |
87c75316 | 482 | Common Var(warn_attributes) Init(1) Warning |
9b2d6d13 | 483 | Warn about inappropriate attribute usage |
484 | ||
6f2f567f | 485 | Wcast-align |
87c75316 | 486 | Common Var(warn_cast_align) Warning |
bb0814ce | 487 | Warn about pointer casts which increase alignment |
6f2f567f | 488 | |
3a79f5da | 489 | Wcpp |
490 | Common Var(warn_cpp) Init(1) Warning | |
491 | Warn when a #warning directive is encountered | |
492 | ||
6f2f567f | 493 | Wdeprecated-declarations |
87c75316 | 494 | Common Var(warn_deprecated_decl) Init(1) Warning |
bb0814ce | 495 | Warn about uses of __attribute__((deprecated)) declarations |
6f2f567f | 496 | |
497 | Wdisabled-optimization | |
87c75316 | 498 | Common Var(warn_disabled_optimization) Warning |
bb0814ce | 499 | Warn when an optimization pass is disabled |
6f2f567f | 500 | |
501 | Werror | |
2e9da478 | 502 | Common Var(warnings_are_errors) |
bb0814ce | 503 | Treat all warnings as errors |
6f2f567f | 504 | |
76f02516 | 505 | Werror= |
506 | Common Joined | |
507 | Treat specified warning as error | |
508 | ||
da3b1bab | 509 | Wextra |
a0ded67b | 510 | Common Var(extra_warnings) Warning |
53b8e5c1 | 511 | Print extra (possibly unwanted) warnings |
da3b1bab | 512 | |
295acf4f | 513 | Wfatal-errors |
2e9da478 | 514 | Common Var(flag_fatal_errors) |
295acf4f | 515 | Exit on the first error occurred |
516 | ||
6fdade09 | 517 | Wframe-larger-than= |
518 | Common RejectNegative Joined UInteger | |
cf210371 | 519 | -Wframe-larger-than=<number> Warn if a function's stack frame requires more than <number> bytes |
6fdade09 | 520 | |
6f2f567f | 521 | Winline |
87c75316 | 522 | Common Var(warn_inline) Warning |
bb0814ce | 523 | Warn when an inlined function cannot be inlined |
6f2f567f | 524 | |
525 | Wlarger-than- | |
67089c6b | 526 | Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) |
17c66687 | 527 | |
528 | Wlarger-than= | |
529 | Common RejectNegative Joined UInteger Warning | |
530 | -Wlarger-than=<number> Warn if an object is larger than <number> bytes | |
6f2f567f | 531 | |
7e3cc681 | 532 | Wunsafe-loop-optimizations |
87c75316 | 533 | Common Var(warn_unsafe_loop_optimizations) Warning |
7e3cc681 | 534 | Warn if the loop cannot be optimized due to nontrivial assumptions. |
535 | ||
6f2f567f | 536 | Wmissing-noreturn |
87c75316 | 537 | Common Var(warn_missing_noreturn) Warning |
bb0814ce | 538 | Warn about functions which might be candidates for __attribute__((noreturn)) |
6f2f567f | 539 | |
f63eb5d3 | 540 | Wmudflap |
541 | Common Var(warn_mudflap) Init(1) Warning | |
542 | Warn about constructs not instrumented by -fmudflap | |
543 | ||
55972f40 | 544 | Woverflow |
87c75316 | 545 | Common Var(warn_overflow) Init(1) Warning |
55972f40 | 546 | Warn about overflow in arithmetic expressions |
547 | ||
6f2f567f | 548 | Wpacked |
87c75316 | 549 | Common Var(warn_packed) Warning |
bb0814ce | 550 | Warn when the packed attribute has no effect on struct layout |
6f2f567f | 551 | |
552 | Wpadded | |
87c75316 | 553 | Common Var(warn_padded) Warning |
bb0814ce | 554 | Warn when padding is required to align structure members |
6f2f567f | 555 | |
556 | Wshadow | |
87c75316 | 557 | Common Var(warn_shadow) Warning |
bb0814ce | 558 | Warn when one local variable shadows another |
6f2f567f | 559 | |
f1a0edff | 560 | Wstack-protector |
87c75316 | 561 | Common Var(warn_stack_protect) Warning |
f1a0edff | 562 | Warn when not issuing stack smashing protection for some reason |
563 | ||
6f2f567f | 564 | Wstrict-aliasing |
87c75316 | 565 | Common Warning |
bb0814ce | 566 | Warn about code which might break strict aliasing rules |
6f2f567f | 567 | |
c1628b55 | 568 | Wstrict-aliasing= |
212cc995 | 569 | Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Init(-1) Warning |
c1628b55 | 570 | Warn about code which might break strict aliasing rules |
571 | ||
add6ee5e | 572 | Wstrict-overflow |
e8831472 | 573 | Common Warning |
add6ee5e | 574 | Warn about optimizations that assume that signed overflow is undefined |
575 | ||
576 | Wstrict-overflow= | |
212cc995 | 577 | Common Joined RejectNegative UInteger Var(warn_strict_overflow) Init(-1) Warning |
add6ee5e | 578 | Warn about optimizations that assume that signed overflow is undefined |
579 | ||
2c06958d | 580 | Wsuggest-attribute=const |
581 | Common Var(warn_suggest_attribute_const) Warning | |
582 | Warn about functions which might be candidates for __attribute__((const)) | |
583 | ||
584 | Wsuggest-attribute=pure | |
585 | Common Var(warn_suggest_attribute_pure) Warning | |
586 | Warn about functions which might be candidates for __attribute__((pure)) | |
587 | ||
43d60d64 | 588 | Wsuggest-attribute=noreturn |
589 | Common Var(warn_suggest_attribute_noreturn) Warning | |
590 | Warn about functions which might be candidates for __attribute__((noreturn)) | |
591 | ||
6f2f567f | 592 | Wswitch |
87c75316 | 593 | Common Var(warn_switch) Warning |
bb0814ce | 594 | Warn about enumerated switches, with no default, missing a case |
6f2f567f | 595 | |
596 | Wswitch-default | |
87c75316 | 597 | Common Var(warn_switch_default) Warning |
bb0814ce | 598 | Warn about enumerated switches missing a \"default:\" statement |
6f2f567f | 599 | |
600 | Wswitch-enum | |
87c75316 | 601 | Common Var(warn_switch_enum) Warning |
bb0814ce | 602 | Warn about all enumerated switches missing a specific case |
6f2f567f | 603 | |
604 | Wsystem-headers | |
87c75316 | 605 | Common Var(warn_system_headers) Warning |
72528c71 | 606 | Do not suppress warnings from system headers |
6f2f567f | 607 | |
8bc8a8f4 | 608 | Wtrampolines |
609 | Common Var(warn_trampolines) Warning | |
610 | Warn whenever a trampoline is generated | |
611 | ||
100b67da | 612 | Wtype-limits |
613 | Common Var(warn_type_limits) Init(-1) Warning | |
614 | Warn if a comparison is always true or always false due to the limited range of the data type | |
615 | ||
6f2f567f | 616 | Wuninitialized |
a0ded67b | 617 | Common Var(warn_uninitialized) Init(-1) Warning |
bb0814ce | 618 | Warn about uninitialized automatic variables |
6f2f567f | 619 | |
620 | Wunreachable-code | |
3b0273a1 | 621 | Common Ignore |
cc029bec | 622 | Does nothing. Preserved for backward compatibility. |
6f2f567f | 623 | |
da3b1bab | 624 | Wunused |
278e3a1f | 625 | Common Var(warn_unused) Init(0) Warning |
53b8e5c1 | 626 | Enable all -Wunused- warnings |
da3b1bab | 627 | |
abc6c64f | 628 | Wunused-but-set-parameter |
629 | Common Var(warn_unused_but_set_parameter) Init(-1) Warning | |
630 | Warn when a function parameter is only set, otherwise unused | |
631 | ||
632 | Wunused-but-set-variable | |
633 | Common Var(warn_unused_but_set_variable) Init(-1) Warning | |
634 | Warn when a variable is only set, otherwise unused | |
635 | ||
6f2f567f | 636 | Wunused-function |
278e3a1f | 637 | Common Var(warn_unused_function) Init(-1) Warning |
bb0814ce | 638 | Warn when a function is unused |
6f2f567f | 639 | |
640 | Wunused-label | |
278e3a1f | 641 | Common Var(warn_unused_label) Init(-1) Warning |
bb0814ce | 642 | Warn when a label is unused |
6f2f567f | 643 | |
644 | Wunused-parameter | |
278e3a1f | 645 | Common Var(warn_unused_parameter) Init(-1) Warning |
bb0814ce | 646 | Warn when a function parameter is unused |
6f2f567f | 647 | |
648 | Wunused-value | |
278e3a1f | 649 | Common Var(warn_unused_value) Init(-1) Warning |
bb0814ce | 650 | Warn when an expression value is unused |
6f2f567f | 651 | |
652 | Wunused-variable | |
278e3a1f | 653 | Common Var(warn_unused_variable) Init(-1) Warning |
bb0814ce | 654 | Warn when a variable is unused |
6f2f567f | 655 | |
c81ed7c1 | 656 | Wcoverage-mismatch |
21cd990d | 657 | Common Var(warn_coverage_mismatch) Init(1) Warning |
658 | Warn in case profiles in -fprofile-use do not match | |
c81ed7c1 | 659 | |
e28aa114 | 660 | Xassembler |
661 | Driver Separate | |
662 | ||
663 | Xlinker | |
664 | Driver Separate | |
665 | ||
666 | Xpreprocessor | |
667 | Driver Separate | |
668 | ||
3bfde2af | 669 | Z |
670 | Driver | |
671 | ||
e690b385 | 672 | aux-info |
6bd9d862 | 673 | Common Separate Var(aux_info_file_name) |
53b8e5c1 | 674 | -aux-info <file> Emit declaration information into <file> |
e690b385 | 675 | |
676 | aux-info= | |
67089c6b | 677 | Common Joined Alias(aux-info) |
e690b385 | 678 | |
679 | auxbase | |
6bd9d862 | 680 | Common Separate RejectDriver Var(aux_base_name) |
e690b385 | 681 | |
682 | auxbase-strip | |
e28aa114 | 683 | Common Separate RejectDriver |
684 | ||
5789e05b | 685 | coverage |
686 | Driver | |
687 | ||
e28aa114 | 688 | c |
689 | Driver | |
e690b385 | 690 | |
691 | d | |
692 | Common Joined | |
53b8e5c1 | 693 | -d<letters> Enable dumps from specific passes of the compiler |
e690b385 | 694 | |
695 | dumpbase | |
6bd9d862 | 696 | Common Separate Var(dump_base_name) |
53b8e5c1 | 697 | -dumpbase <file> Set the file basename to be used for dumps |
e690b385 | 698 | |
50ca7c37 | 699 | dumpdir |
6bd9d862 | 700 | Common Separate Var(dump_dir_name) |
eb21bbd2 | 701 | -dumpdir <dir> Set the directory name to be used for dumps |
50ca7c37 | 702 | |
e28aa114 | 703 | dumpmachine |
704 | Driver | |
705 | ||
706 | dumpspecs | |
707 | Driver | |
708 | ||
709 | dumpversion | |
710 | Driver | |
711 | ||
5789e05b | 712 | e |
713 | Driver Joined Separate | |
714 | ||
82a16202 | 715 | ; The version of the C++ ABI in use. The following values are allowed: |
716 | ; | |
717 | ; 0: The version of the ABI believed most conformant with the C++ ABI | |
718 | ; specification. This ABI may change as bugs are discovered and fixed. | |
719 | ; Therefore, 0 will not necessarily indicate the same ABI in different | |
720 | ; versions of G++. | |
721 | ; | |
722 | ; 1: The version of the ABI first used in G++ 3.2. | |
723 | ; | |
29e2e80a | 724 | ; 2: The version of the ABI first used in G++ 3.4 (and current default). |
725 | ; | |
726 | ; 3: The version of the ABI that fixes the missing underscore | |
727 | ; in template non-type arguments of pointer type. | |
728 | ; | |
729 | ; 4: The version of the ABI that introduces unambiguous mangling of | |
730 | ; vector types. | |
e9e7c198 | 731 | ; |
82a16202 | 732 | ; Additional positive integers will be assigned as new versions of |
733 | ; the ABI become the default version of the ABI. | |
e100aadc | 734 | fabi-version= |
212cc995 | 735 | Common Joined RejectNegative UInteger Var(flag_abi_version) Init(2) |
e100aadc | 736 | |
ecdb6d1a | 737 | falign-functions |
46f8e3b0 | 738 | Common Report Var(align_functions,0) Optimization UInteger |
72528c71 | 739 | Align the start of functions |
ecdb6d1a | 740 | |
941a4893 | 741 | falign-functions= |
6bd9d862 | 742 | Common RejectNegative Joined UInteger Var(align_functions) |
941a4893 | 743 | |
ecdb6d1a | 744 | falign-jumps |
46f8e3b0 | 745 | Common Report Var(align_jumps,0) Optimization UInteger |
72528c71 | 746 | Align labels which are only reached by jumping |
ecdb6d1a | 747 | |
941a4893 | 748 | falign-jumps= |
6bd9d862 | 749 | Common RejectNegative Joined UInteger Var(align_jumps) |
941a4893 | 750 | |
ecdb6d1a | 751 | falign-labels |
46f8e3b0 | 752 | Common Report Var(align_labels,0) Optimization UInteger |
72528c71 | 753 | Align all labels |
ecdb6d1a | 754 | |
941a4893 | 755 | falign-labels= |
6bd9d862 | 756 | Common RejectNegative Joined UInteger Var(align_labels) |
941a4893 | 757 | |
ecdb6d1a | 758 | falign-loops |
c17f64cc | 759 | Common Report Var(align_loops,0) Optimization UInteger |
72528c71 | 760 | Align the start of loops |
ecdb6d1a | 761 | |
941a4893 | 762 | falign-loops= |
6bd9d862 | 763 | Common RejectNegative Joined UInteger Var(align_loops) |
941a4893 | 764 | |
ecdb6d1a | 765 | fargument-alias |
3b0273a1 | 766 | Common Ignore |
e190b18a | 767 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 768 | |
769 | fargument-noalias | |
3b0273a1 | 770 | Common Ignore |
e190b18a | 771 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 772 | |
773 | fargument-noalias-global | |
3b0273a1 | 774 | Common Ignore |
e190b18a | 775 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 776 | |
5ff22aea | 777 | fargument-noalias-anything |
3b0273a1 | 778 | Common Ignore |
e190b18a | 779 | Does nothing. Preserved for backward compatibility. |
5ff22aea | 780 | |
ecdb6d1a | 781 | fasynchronous-unwind-tables |
87c75316 | 782 | Common Report Var(flag_asynchronous_unwind_tables) Optimization |
72528c71 | 783 | Generate unwind tables that are exact at each instruction boundary |
ecdb6d1a | 784 | |
3072d30e | 785 | fauto-inc-dec |
786 | Common Report Var(flag_auto_inc_dec) Init(1) | |
787 | Generate auto-inc/dec instructions | |
788 | ||
82a16202 | 789 | ; -fcheck-bounds causes gcc to generate array bounds checks. |
790 | ; For C, C++ and ObjC: defaults off. | |
791 | ; For Java: defaults to on. | |
792 | ; For Fortran: defaults to off. | |
ecdb6d1a | 793 | fbounds-check |
2e9da478 | 794 | Common Report Var(flag_bounds_check) |
72528c71 | 795 | Generate code to check bounds before indexing arrays |
ecdb6d1a | 796 | |
797 | fbranch-count-reg | |
87c75316 | 798 | Common Report Var(flag_branch_on_count_reg) Init(1) Optimization |
72528c71 | 799 | Replace add, compare, branch with branch on count register |
ecdb6d1a | 800 | |
801 | fbranch-probabilities | |
87c75316 | 802 | Common Report Var(flag_branch_probabilities) Optimization |
72528c71 | 803 | Use profiling information for branch probabilities |
ecdb6d1a | 804 | |
1e06725a | 805 | fbranch-target-load-optimize |
87c75316 | 806 | Common Report Var(flag_branch_target_load_optimize) Optimization |
72528c71 | 807 | Perform branch target load optimization before prologue / epilogue threading |
1e06725a | 808 | |
809 | fbranch-target-load-optimize2 | |
87c75316 | 810 | Common Report Var(flag_branch_target_load_optimize2) Optimization |
72528c71 | 811 | Perform branch target load optimization after prologue / epilogue threading |
1e06725a | 812 | |
08d163a9 | 813 | fbtr-bb-exclusive |
87c75316 | 814 | Common Report Var(flag_btr_bb_exclusive) Optimization |
08d163a9 | 815 | Restrict target load migration not to re-use registers in any basic block |
816 | ||
941a4893 | 817 | fcall-saved- |
f0da0668 | 818 | Common Joined RejectNegative Var(common_deferred_options) Defer |
53b8e5c1 | 819 | -fcall-saved-<register> Mark <register> as being preserved across functions |
941a4893 | 820 | |
821 | fcall-used- | |
f0da0668 | 822 | Common Joined RejectNegative Var(common_deferred_options) Defer |
53b8e5c1 | 823 | -fcall-used-<register> Mark <register> as being corrupted by function calls |
941a4893 | 824 | |
82a16202 | 825 | ; Nonzero for -fcaller-saves: allocate values in regs that need to |
826 | ; be saved across function calls, if that produces overall better code. | |
827 | ; Optional now, so people can test it. | |
1e06725a | 828 | fcaller-saves |
87c75316 | 829 | Common Report Var(flag_caller_saves) Optimization |
72528c71 | 830 | Save registers around function calls |
1e06725a | 831 | |
355572cc | 832 | fcheck-data-deps |
833 | Common Report Var(flag_check_data_deps) | |
834 | Compare the results of several data dependence analyzers. | |
835 | ||
bbb0a662 | 836 | fcombine-stack-adjustments |
837 | Common Report Var(flag_combine_stack_adjustments) Optimization | |
838 | Looks for opportunities to reduce stack adjustments and stack references. | |
839 | ||
ecdb6d1a | 840 | fcommon |
87c75316 | 841 | Common Report Var(flag_no_common,0) Optimization |
72528c71 | 842 | Do not put uninitialized globals in the common section |
ecdb6d1a | 843 | |
e28aa114 | 844 | fcompare-debug |
845 | Driver | |
846 | ; Converted by the driver to -fcompare-debug= options. | |
847 | ||
71278019 | 848 | fcompare-debug= |
e28aa114 | 849 | Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) |
cf210371 | 850 | -fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump |
71278019 | 851 | |
852 | fcompare-debug-second | |
ab3728ee | 853 | Common Driver RejectNegative Var(flag_compare_debug) |
71278019 | 854 | Run only the second compilation of -fcompare-debug |
855 | ||
a50372fe | 856 | fcompare-elim |
857 | Common Report Var(flag_compare_elim_after_reload) Optimization | |
858 | Perform comparison elimination after register allocation has finished | |
859 | ||
9845d120 | 860 | fconserve-stack |
861 | Common Var(flag_conserve_stack) Optimization | |
862 | Do not perform optimizations increasing noticeably stack usage | |
863 | ||
ecdb6d1a | 864 | fcprop-registers |
87c75316 | 865 | Common Report Var(flag_cprop_registers) Optimization |
72528c71 | 866 | Perform a register copy-propagation optimization pass |
ecdb6d1a | 867 | |
1e06725a | 868 | fcrossjumping |
87c75316 | 869 | Common Report Var(flag_crossjumping) Optimization |
72528c71 | 870 | Perform cross-jumping optimization |
1e06725a | 871 | |
872 | fcse-follow-jumps | |
87c75316 | 873 | Common Report Var(flag_cse_follow_jumps) Optimization |
72528c71 | 874 | When running CSE, follow jumps to their targets |
1e06725a | 875 | |
876 | fcse-skip-blocks | |
3b0273a1 | 877 | Common Ignore |
d743aba2 | 878 | Does nothing. Preserved for backward compatibility. |
1e06725a | 879 | |
45b9d334 | 880 | fcx-limited-range |
ecee1b29 | 881 | Common Report Var(flag_cx_limited_range) Optimization SetByCombined |
45b9d334 | 882 | Omit range reduction step when performing complex division |
883 | ||
608256a0 | 884 | fcx-fortran-rules |
885 | Common Report Var(flag_cx_fortran_rules) Optimization | |
886 | Complex multiplication and division follow Fortran rules | |
887 | ||
ecdb6d1a | 888 | fdata-sections |
87c75316 | 889 | Common Report Var(flag_data_sections) Optimization |
72528c71 | 890 | Place data items into their own section |
ecdb6d1a | 891 | |
d2153a46 | 892 | fdbg-cnt-list |
9faf44d6 | 893 | Common Report Var(common_deferred_options) Defer |
d2153a46 | 894 | List all available debugging counters with their limits and counts. |
895 | ||
3072d30e | 896 | fdbg-cnt= |
9faf44d6 | 897 | Common RejectNegative Joined Var(common_deferred_options) Defer |
cf210371 | 898 | -fdbg-cnt=<counter>:<limit>[,<counter>:<limit>,...] Set the debug counter limit. |
3072d30e | 899 | |
5f1f2de5 | 900 | fdebug-prefix-map= |
9faf44d6 | 901 | Common Joined RejectNegative Var(common_deferred_options) Defer |
5f1f2de5 | 902 | Map one directory name to another in debug information |
903 | ||
82a16202 | 904 | ; Nonzero for -fdefer-pop: don't pop args after each function call |
905 | ; instead save them up to pop many calls' args with one insns. | |
1e06725a | 906 | fdefer-pop |
87c75316 | 907 | Common Report Var(flag_defer_pop) Optimization |
72528c71 | 908 | Defer popping functions args from stack until later |
1e06725a | 909 | |
910 | fdelayed-branch | |
87c75316 | 911 | Common Report Var(flag_delayed_branch) Optimization |
72528c71 | 912 | Attempt to fill delay slots of branch instructions |
1e06725a | 913 | |
914 | fdelete-null-pointer-checks | |
7df298fe | 915 | Common Report Var(flag_delete_null_pointer_checks) Init(1) Optimization |
72528c71 | 916 | Delete useless null pointer checks |
1e06725a | 917 | |
16358a63 | 918 | fdevirtualize |
919 | Common Report Var(flag_devirtualize) Optimization | |
920 | Try to convert virtual calls to direct ones. | |
921 | ||
1e06725a | 922 | fdiagnostics-show-location= |
d62a5950 | 923 | Common Joined RejectNegative Enum(diagnostic_prefixing_rule) |
53b8e5c1 | 924 | -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics |
1e06725a | 925 | |
d62a5950 | 926 | ; Required for these enum values. |
927 | SourceInclude | |
928 | pretty-print.h | |
929 | ||
930 | Enum | |
931 | Name(diagnostic_prefixing_rule) Type(int) | |
932 | ||
933 | EnumValue | |
934 | Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) | |
935 | ||
936 | EnumValue | |
937 | Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) | |
938 | ||
efb9d9ee | 939 | fdiagnostics-show-option |
3fee9a69 | 940 | Common Var(flag_diagnostics_show_option) Init(1) |
3284a242 | 941 | Amend appropriate diagnostic messages with the command line option that controls them |
efb9d9ee | 942 | |
4ee9c684 | 943 | fdump- |
f0da0668 | 944 | Common Joined RejectNegative Var(common_deferred_options) Defer |
4ee9c684 | 945 | -fdump-<type> Dump various compiler internals to a file |
946 | ||
0b1d266f | 947 | fdump-final-insns |
948 | Driver RejectNegative | |
949 | ||
71278019 | 950 | fdump-final-insns= |
951 | Common RejectNegative Joined Var(flag_dump_final_insns) | |
952 | -fdump-final-insns=filename Dump to filename the insns at the end of translation | |
953 | ||
929d2a90 | 954 | fdump-go-spec= |
955 | Common RejectNegative Joined Var(flag_dump_go_spec) | |
956 | -fdump-go-spec=filename Write all declarations to file as Go code | |
957 | ||
969239ad | 958 | fdump-noaddr |
959 | Common Report Var(flag_dump_noaddr) | |
960 | Suppress output of addresses in debugging dumps | |
961 | ||
ecdb6d1a | 962 | fdump-unnumbered |
0f8defe5 | 963 | Common Report Var(flag_dump_unnumbered) |
969239ad | 964 | Suppress output of instruction numbers, line number notes and addresses in debugging dumps |
ecdb6d1a | 965 | |
0a59e439 | 966 | fdump-unnumbered-links |
0f8defe5 | 967 | Common Report Var(flag_dump_unnumbered_links) |
0a59e439 | 968 | Suppress output of previous and next insn numbers in debugging dumps |
969 | ||
9845d120 | 970 | fdwarf2-cfi-asm |
971 | Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE) | |
972 | Enable CFI tables via GAS assembler directives. | |
973 | ||
f1aa280c | 974 | fearly-inlining |
87c75316 | 975 | Common Report Var(flag_early_inlining) Init(1) Optimization |
f1aa280c | 976 | Perform early inlining |
977 | ||
1e06725a | 978 | feliminate-dwarf2-dups |
2e9da478 | 979 | Common Report Var(flag_eliminate_dwarf2_dups) |
72528c71 | 980 | Perform DWARF2 duplicate elimination |
1e06725a | 981 | |
2f29eac3 | 982 | fipa-sra |
983 | Common Report Var(flag_ipa_sra) Init(0) Optimization | |
984 | Perform interprocedural reduction of aggregates | |
985 | ||
262444a6 | 986 | feliminate-unused-debug-symbols |
2e9da478 | 987 | Common Report Var(flag_debug_only_used_symbols) |
72528c71 | 988 | Perform unused type elimination in debug info |
262444a6 | 989 | |
1e06725a | 990 | feliminate-unused-debug-types |
2e9da478 | 991 | Common Report Var(flag_eliminate_unused_debug_types) Init(1) |
72528c71 | 992 | Perform unused type elimination in debug info |
1e06725a | 993 | |
0c573f98 | 994 | femit-class-debug-always |
fd5e1dfe | 995 | Common Report Var(flag_emit_class_debug_always) Init(0) |
0c573f98 | 996 | Do not suppress C++ class debug information. |
997 | ||
d907ec51 | 998 | fenable-icf-debug |
999 | Common Report Var(flag_enable_icf_debug) | |
1000 | Generate debug information to support Identical Code Folding (ICF) | |
1001 | ||
ecdb6d1a | 1002 | fexceptions |
87c75316 | 1003 | Common Report Var(flag_exceptions) Optimization |
72528c71 | 1004 | Enable exception handling |
ecdb6d1a | 1005 | |
1e06725a | 1006 | fexpensive-optimizations |
87c75316 | 1007 | Common Report Var(flag_expensive_optimizations) Optimization |
72528c71 | 1008 | Perform a number of minor, expensive optimizations |
1e06725a | 1009 | |
c6418a4e | 1010 | fexcess-precision= |
d62a5950 | 1011 | Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) |
c6418a4e | 1012 | -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision |
1013 | ||
d62a5950 | 1014 | Enum |
1015 | Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) | |
1016 | ||
1017 | EnumValue | |
1018 | Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) | |
1019 | ||
1020 | EnumValue | |
1021 | Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) | |
1022 | ||
941a4893 | 1023 | ffast-math |
1024 | Common | |
1025 | ||
ecdb6d1a | 1026 | ffinite-math-only |
ecee1b29 | 1027 | Common Report Var(flag_finite_math_only) Optimization SetByCombined |
72528c71 | 1028 | Assume no NaNs or infinities are generated |
ecdb6d1a | 1029 | |
941a4893 | 1030 | ffixed- |
f0da0668 | 1031 | Common Joined RejectNegative Var(common_deferred_options) Defer |
53b8e5c1 | 1032 | -ffixed-<register> Mark <register> as being unavailable to the compiler |
941a4893 | 1033 | |
1e06725a | 1034 | ffloat-store |
87c75316 | 1035 | Common Report Var(flag_float_store) Optimization |
82a16202 | 1036 | Don't allocate floats and doubles in extended-precision registers |
1e06725a | 1037 | |
1038 | fforce-addr | |
3b0273a1 | 1039 | Common Ignore |
4d25f9eb | 1040 | Does nothing. Preserved for backward compatibility. |
1e06725a | 1041 | |
55d51835 | 1042 | fforward-propagate |
1043 | Common Report Var(flag_forward_propagate) Optimization | |
42a3a38b | 1044 | Perform a forward propagation pass on RTL |
1045 | ||
b9be572e | 1046 | ffp-contract= |
d62a5950 | 1047 | Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) |
b9be572e | 1048 | -ffp-contract=[off|on|fast] Perform floating-point expression contraction. |
1049 | ||
d62a5950 | 1050 | Enum |
1051 | Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) | |
1052 | ||
1053 | EnumValue | |
1054 | Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) | |
1055 | ||
1056 | ; Not implemented, fall back to conservative FP_CONTRACT_OFF. | |
1057 | EnumValue | |
1058 | Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) | |
1059 | ||
1060 | EnumValue | |
1061 | Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) | |
1062 | ||
82a16202 | 1063 | ; Nonzero means don't put addresses of constant functions in registers. |
1064 | ; Used for compiling the Unix kernel, where strange substitutions are | |
1065 | ; done on the assembly output. | |
1e06725a | 1066 | ffunction-cse |
2e9da478 | 1067 | Common Report Var(flag_no_function_cse,0) |
72528c71 | 1068 | Allow function addresses to be held in registers |
1e06725a | 1069 | |
ecdb6d1a | 1070 | ffunction-sections |
2e9da478 | 1071 | Common Report Var(flag_function_sections) |
72528c71 | 1072 | Place each function into its own section |
ecdb6d1a | 1073 | |
1e06725a | 1074 | fgcse |
87c75316 | 1075 | Common Report Var(flag_gcse) Optimization |
72528c71 | 1076 | Perform global common subexpression elimination |
1e06725a | 1077 | |
1078 | fgcse-lm | |
87c75316 | 1079 | Common Report Var(flag_gcse_lm) Init(1) Optimization |
72528c71 | 1080 | Perform enhanced load motion during global common subexpression elimination |
1e06725a | 1081 | |
1082 | fgcse-sm | |
87c75316 | 1083 | Common Report Var(flag_gcse_sm) Init(0) Optimization |
72528c71 | 1084 | Perform store motion after global common subexpression elimination |
1e06725a | 1085 | |
5c47e414 | 1086 | fgcse-las |
87c75316 | 1087 | Common Report Var(flag_gcse_las) Init(0) Optimization |
839f8415 | 1088 | Perform redundant load after store elimination in global common subexpression |
1089 | elimination | |
1090 | ||
1091 | fgcse-after-reload | |
87c75316 | 1092 | Common Report Var(flag_gcse_after_reload) Optimization |
839f8415 | 1093 | Perform global common subexpression elimination after register allocation |
3284a242 | 1094 | has finished |
5c47e414 | 1095 | |
d3399492 | 1096 | ; This option is not documented yet as its semantics will change. |
255b6be7 | 1097 | fgraphite |
1098 | Common Report Var(flag_graphite) | |
1099 | Enable in and out of Graphite representation | |
1100 | ||
26c166eb | 1101 | fgraphite-identity |
1102 | Common Report Var(flag_graphite_identity) Optimization | |
1103 | Enable Graphite Identity transformation | |
1104 | ||
16848556 | 1105 | floop-parallelize-all |
1106 | Common Report Var(flag_loop_parallelize_all) Optimization | |
26c166eb | 1107 | Mark all loops as parallel |
1108 | ||
255b6be7 | 1109 | floop-strip-mine |
1110 | Common Report Var(flag_loop_strip_mine) Optimization | |
1111 | Enable Loop Strip Mining transformation | |
1112 | ||
1113 | floop-interchange | |
1114 | Common Report Var(flag_loop_interchange) Optimization | |
1115 | Enable Loop Interchange transformation | |
1116 | ||
1117 | floop-block | |
1118 | Common Report Var(flag_loop_block) Optimization | |
1119 | Enable Loop Blocking transformation | |
1120 | ||
d60a90cc | 1121 | floop-flatten |
1122 | Common Report Var(flag_loop_flatten) Optimization | |
1123 | Enable Loop Flattening transformation | |
1124 | ||
a420d927 | 1125 | fstrict-volatile-bitfields |
1126 | Common Report Var(flag_strict_volatile_bitfields) Init(-1) | |
1127 | Force bitfield accesses to match their type width | |
1128 | ||
ecdb6d1a | 1129 | fguess-branch-probability |
87c75316 | 1130 | Common Report Var(flag_guess_branch_prob) Optimization |
72528c71 | 1131 | Enable guessing of branch probabilities |
ecdb6d1a | 1132 | |
82a16202 | 1133 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
1134 | ; Generate position-independent code for executables if possible | |
1135 | ; On SVR4 targets, it also controls whether or not to emit a | |
1136 | ; string identifying the compiler. | |
ecdb6d1a | 1137 | fident |
2e9da478 | 1138 | Common Report Var(flag_no_ident,0) |
72528c71 | 1139 | Process #ident directives |
ecdb6d1a | 1140 | |
1e06725a | 1141 | fif-conversion |
87c75316 | 1142 | Common Report Var(flag_if_conversion) Optimization |
72528c71 | 1143 | Perform conversion of conditional jumps to branchless equivalents |
1e06725a | 1144 | |
1145 | fif-conversion2 | |
87c75316 | 1146 | Common Report Var(flag_if_conversion2) Optimization |
72528c71 | 1147 | Perform conversion of conditional jumps to conditional execution |
1e06725a | 1148 | |
0cb1935d | 1149 | ftree-loop-if-convert |
1150 | Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization | |
1151 | Convert conditional jumps in innermost loops to branchless equivalents | |
1152 | ||
3b91ccd9 | 1153 | ftree-loop-if-convert-stores |
1154 | Common Report Var(flag_tree_loop_if_convert_stores) Optimization | |
1155 | Also if-convert conditional jumps containing memory writes | |
1156 | ||
82a16202 | 1157 | ; -finhibit-size-directive inhibits output of .size for ELF. |
1158 | ; This is used only for compiling crtstuff.c, | |
1159 | ; and it may be extended to other effects | |
1160 | ; needed for crtstuff.c on other systems. | |
ecdb6d1a | 1161 | finhibit-size-directive |
2e9da478 | 1162 | Common Report Var(flag_inhibit_size_directive) |
72528c71 | 1163 | Do not generate .size directives |
ecdb6d1a | 1164 | |
f8daee9b | 1165 | findirect-inlining |
1166 | Common Report Var(flag_indirect_inlining) | |
1167 | Perform indirect inlining | |
1168 | ||
82a16202 | 1169 | ; Nonzero means that functions declared `inline' will be treated |
1170 | ; as `static'. Prevents generation of zillions of copies of unused | |
1171 | ; static inline functions; instead, `inlines' are written out | |
1172 | ; only when actually used. Used in conjunction with -g. Also | |
1173 | ; does the right thing with #pragma interface. | |
1e06725a | 1174 | finline |
1c2f0012 | 1175 | Common Report Var(flag_no_inline,0) Init(0) |
72528c71 | 1176 | Pay attention to the \"inline\" keyword |
1e06725a | 1177 | |
b97510b2 | 1178 | finline-small-functions |
1179 | Common Report Var(flag_inline_small_functions) Optimization | |
1180 | Integrate simple functions into their callers when code size is known to not growth | |
1181 | ||
1e06725a | 1182 | finline-functions |
87c75316 | 1183 | Common Report Var(flag_inline_functions) Optimization |
72528c71 | 1184 | Integrate simple functions into their callers |
1e06725a | 1185 | |
f1aa280c | 1186 | finline-functions-called-once |
87c75316 | 1187 | Common Report Var(flag_inline_functions_called_once) Init(1) Optimization |
f1aa280c | 1188 | Integrate functions called once into their callers |
9e0baf4d | 1189 | |
39470ac3 | 1190 | finline-limit- |
67089c6b | 1191 | Common RejectNegative Joined Alias(finline-limit=) |
39470ac3 | 1192 | |
1193 | finline-limit= | |
1194 | Common RejectNegative Joined UInteger | |
53b8e5c1 | 1195 | -finline-limit=<number> Limit the size of inlined functions to <number> |
39470ac3 | 1196 | |
ecdb6d1a | 1197 | finstrument-functions |
2e9da478 | 1198 | Common Report Var(flag_instrument_function_entry_exit) |
72528c71 | 1199 | Instrument function entry and exit with profiling calls |
ecdb6d1a | 1200 | |
a95c0776 | 1201 | finstrument-functions-exclude-function-list= |
1202 | Common RejectNegative Joined | |
1203 | -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions | |
1204 | ||
1205 | finstrument-functions-exclude-file-list= | |
1206 | Common RejectNegative Joined | |
1207 | -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files | |
1208 | ||
a17a73c7 | 1209 | fipa-cp |
87c75316 | 1210 | Common Report Var(flag_ipa_cp) Optimization |
a17a73c7 | 1211 | Perform Interprocedural constant propagation |
1212 | ||
2a15795f | 1213 | fipa-cp-clone |
1214 | Common Report Var(flag_ipa_cp_clone) Optimization | |
1215 | Perform cloning to make Interprocedural constant propagation stronger | |
1216 | ||
4e2db0ad | 1217 | fipa-profile |
1218 | Common Report Var(flag_ipa_profile) Init(0) Optimization | |
1219 | Perform interprocedural profile propagation | |
f7d118a9 | 1220 | |
bdf4f142 | 1221 | fipa-pta |
87c75316 | 1222 | Common Report Var(flag_ipa_pta) Init(0) Optimization |
bdf4f142 | 1223 | Perform interprocedural points-to analysis |
1224 | ||
4e2db0ad | 1225 | fipa-pure-const |
1226 | Common Report Var(flag_ipa_pure_const) Init(0) Optimization | |
1227 | Discover pure and const functions | |
1228 | ||
f7d118a9 | 1229 | fipa-reference |
87c75316 | 1230 | Common Report Var(flag_ipa_reference) Init(0) Optimization |
f7d118a9 | 1231 | Discover readonly and non addressable static variables |
1232 | ||
604cde73 | 1233 | fipa-matrix-reorg |
76c71f34 | 1234 | Common Report Var(flag_ipa_matrix_reorg) Optimization |
604cde73 | 1235 | Perform matrix layout flattening and transposing based |
1236 | on profiling information. | |
1237 | ||
f27ac341 | 1238 | fipa-struct-reorg |
1239 | Common Report Var(flag_ipa_struct_reorg) | |
1240 | Perform structure layout optimizations based | |
1241 | on profiling information. | |
1242 | ||
47dd2e78 | 1243 | fira-algorithm= |
d62a5950 | 1244 | Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) |
14792f4e | 1245 | -fira-algorithm=[CB|priority] Set the used IRA algorithm |
1246 | ||
d62a5950 | 1247 | Enum |
1248 | Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) | |
1249 | ||
1250 | EnumValue | |
1251 | Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) | |
1252 | ||
1253 | EnumValue | |
1254 | Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) | |
1255 | ||
14792f4e | 1256 | fira-region= |
d62a5950 | 1257 | Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_MIXED) |
14792f4e | 1258 | -fira-region=[one|all|mixed] Set regions for IRA |
47dd2e78 | 1259 | |
d62a5950 | 1260 | Enum |
1261 | Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) | |
1262 | ||
1263 | EnumValue | |
1264 | Enum(ira_region) String(one) Value(IRA_REGION_ONE) | |
1265 | ||
1266 | EnumValue | |
1267 | Enum(ira_region) String(all) Value(IRA_REGION_ALL) | |
1268 | ||
1269 | EnumValue | |
1270 | Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) | |
1271 | ||
e8eed2f8 | 1272 | fira-loop-pressure |
1273 | Common Report Var(flag_ira_loop_pressure) | |
1274 | Use IRA based register pressure calculation | |
1275 | in RTL loop optimizations. | |
1276 | ||
47dd2e78 | 1277 | fira-share-save-slots |
1278 | Common Report Var(flag_ira_share_save_slots) Init(1) | |
1279 | Share slots for saving different hard registers. | |
1280 | ||
1281 | fira-share-spill-slots | |
1282 | Common Report Var(flag_ira_share_spill_slots) Init(1) | |
1283 | Share stack slots for spilled pseudo-registers. | |
1284 | ||
1285 | fira-verbose= | |
4aafe913 | 1286 | Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) |
cf210371 | 1287 | -fira-verbose=<number> Control IRA's level of diagnostic messages. |
47dd2e78 | 1288 | |
dec41e98 | 1289 | fivopts |
87c75316 | 1290 | Common Report Var(flag_ivopts) Init(1) Optimization |
dec41e98 | 1291 | Optimize induction variables on trees |
1292 | ||
51d8e657 | 1293 | fjump-tables |
87c75316 | 1294 | Common Var(flag_jump_tables) Init(1) Optimization |
51d8e657 | 1295 | Use jump tables for sufficiently large switch statements |
1296 | ||
1e06725a | 1297 | fkeep-inline-functions |
2e9da478 | 1298 | Common Report Var(flag_keep_inline_functions) |
72528c71 | 1299 | Generate code for functions even if they are fully inlined |
1e06725a | 1300 | |
1301 | fkeep-static-consts | |
2e9da478 | 1302 | Common Report Var(flag_keep_static_consts) Init(1) |
72528c71 | 1303 | Emit static const variables even if they are not used |
1e06725a | 1304 | |
ecdb6d1a | 1305 | fleading-underscore |
2e9da478 | 1306 | Common Report Var(flag_leading_underscore) Init(-1) |
72528c71 | 1307 | Give external symbols a leading underscore |
ecdb6d1a | 1308 | |
4f87b914 | 1309 | floop-optimize |
3b0273a1 | 1310 | Common Ignore |
334ec2d8 | 1311 | Does nothing. Preserved for backward compatibility. |
4f87b914 | 1312 | |
7bfefa9d | 1313 | flto |
cbcf2791 | 1314 | Common |
7bfefa9d | 1315 | Enable link-time optimization. |
1316 | ||
cbcf2791 | 1317 | flto= |
1318 | Common RejectNegative Joined Var(flag_lto) | |
1319 | Link-time optimization with number of parallel jobs or jobserver. | |
1320 | ||
48e3ea52 | 1321 | flto-partition=1to1 |
1322 | Common Var(flag_lto_partition_1to1) | |
1323 | Partition functions and vars at linktime based on object files they originate from | |
1324 | ||
1325 | flto-partition=balanced | |
1326 | Common Var(flag_lto_partition_balanced) | |
1327 | Partition functions and vars at linktime into approximately same sized buckets | |
1328 | ||
cbcf2791 | 1329 | flto-partition=none |
1330 | Common Var(flag_lto_partition_none) | |
1331 | Disable partioning and streaming | |
1332 | ||
7bfefa9d | 1333 | ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. |
1334 | flto-compression-level= | |
212cc995 | 1335 | Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) |
cf210371 | 1336 | -flto-compression-level=<number> Use zlib compression level <number> for IL |
7bfefa9d | 1337 | |
1338 | flto-report | |
1339 | Common Report Var(flag_lto_report) Init(0) Optimization | |
1340 | Report various link-time optimization statistics | |
1341 | ||
ecdb6d1a | 1342 | fmath-errno |
ecee1b29 | 1343 | Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined |
72528c71 | 1344 | Set errno after built-in math functions |
ecdb6d1a | 1345 | |
566d7c74 | 1346 | fmax-errors= |
1347 | Common Joined RejectNegative UInteger Var(flag_max_errors) | |
1348 | -fmax-errors=<number> Maximum number of errors to report | |
1349 | ||
ecdb6d1a | 1350 | fmem-report |
2e9da478 | 1351 | Common Report Var(mem_report) |
72528c71 | 1352 | Report on permanent memory allocation |
ecdb6d1a | 1353 | |
82a16202 | 1354 | ; This will attempt to merge constant section constants, if 1 only |
1355 | ; string constants and constants from constant pool, if 2 also constant | |
1356 | ; variables. | |
ecdb6d1a | 1357 | fmerge-all-constants |
87c75316 | 1358 | Common Report Var(flag_merge_constants,2) Init(1) Optimization |
72528c71 | 1359 | Attempt to merge identical constants and constant variables |
ecdb6d1a | 1360 | |
1361 | fmerge-constants | |
5461e683 | 1362 | Common Report Var(flag_merge_constants,1) Optimization |
72528c71 | 1363 | Attempt to merge identical constants across compilation units |
ecdb6d1a | 1364 | |
7765591b | 1365 | fmerge-debug-strings |
1366 | Common Report Var(flag_merge_debug_strings) Init(1) | |
1367 | Attempt to merge identical debug strings across compilation units | |
1368 | ||
1e06725a | 1369 | fmessage-length= |
1370 | Common RejectNegative Joined UInteger | |
53b8e5c1 | 1371 | -fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping |
1e06725a | 1372 | |
406a73e7 | 1373 | fmodulo-sched |
87c75316 | 1374 | Common Report Var(flag_modulo_sched) Optimization |
406a73e7 | 1375 | Perform SMS based modulo scheduling before the first scheduling pass |
1376 | ||
3a943084 | 1377 | fmodulo-sched-allow-regmoves |
1378 | Common Report Var(flag_modulo_sched_allow_regmoves) | |
1379 | Perform SMS based modulo scheduling with register moves allowed | |
1380 | ||
3a0ecac2 | 1381 | fmove-loop-invariants |
87c75316 | 1382 | Common Report Var(flag_move_loop_invariants) Init(1) Optimization |
3a0ecac2 | 1383 | Move loop invariant computations out of loops |
1384 | ||
4ee9c684 | 1385 | fmudflap |
2e9da478 | 1386 | Common RejectNegative Report Var(flag_mudflap) |
3284a242 | 1387 | Add mudflap bounds-checking instrumentation for single-threaded program |
4ee9c684 | 1388 | |
1389 | fmudflapth | |
5461e683 | 1390 | Common RejectNegative Report Var(flag_mudflap,2) |
3284a242 | 1391 | Add mudflap bounds-checking instrumentation for multi-threaded program |
4ee9c684 | 1392 | |
1393 | fmudflapir | |
2e9da478 | 1394 | Common RejectNegative Report Var(flag_mudflap_ignore_reads) |
3284a242 | 1395 | Ignore read operations when inserting mudflap instrumentation |
4ee9c684 | 1396 | |
3072d30e | 1397 | fdce |
76c71f34 | 1398 | Common Var(flag_dce) Init(1) Optimization |
3072d30e | 1399 | Use the RTL dead code elimination pass |
1400 | ||
1401 | fdse | |
76c71f34 | 1402 | Common Var(flag_dse) Init(1) Optimization |
3072d30e | 1403 | Use the RTL dead store elimination pass |
1404 | ||
f045d41d | 1405 | freschedule-modulo-scheduled-loops |
87c75316 | 1406 | Common Report Var(flag_resched_modulo_sched) Optimization |
f045d41d | 1407 | Enable/Disable the traditional scheduling in loops that already passed modulo scheduling |
1408 | ||
ecdb6d1a | 1409 | fnon-call-exceptions |
87c75316 | 1410 | Common Report Var(flag_non_call_exceptions) Optimization |
72528c71 | 1411 | Support synchronous non-call exceptions |
ecdb6d1a | 1412 | |
1e06725a | 1413 | fomit-frame-pointer |
87c75316 | 1414 | Common Report Var(flag_omit_frame_pointer) Optimization |
72528c71 | 1415 | When possible do not generate stack frames |
1e06725a | 1416 | |
ecdb6d1a | 1417 | foptimize-register-move |
87c75316 | 1418 | Common Report Var(flag_regmove) Optimization |
72528c71 | 1419 | Do the full register move optimization pass |
ecdb6d1a | 1420 | |
1e06725a | 1421 | foptimize-sibling-calls |
87c75316 | 1422 | Common Report Var(flag_optimize_sibling_calls) Optimization |
72528c71 | 1423 | Optimize sibling and tail recursive calls |
1e06725a | 1424 | |
2862cf88 | 1425 | fpartial-inlining |
1426 | Common Report Var(flag_partial_inlining) | |
1427 | Perform partial inlining | |
1428 | ||
51949610 | 1429 | fpre-ipa-mem-report |
1430 | Common Report Var(pre_ipa_mem_report) | |
1431 | Report on memory allocation before interprocedural optimization | |
1432 | ||
1433 | fpost-ipa-mem-report | |
1434 | Common Report Var(post_ipa_mem_report) | |
1435 | Report on memory allocation before interprocedural optimization | |
1436 | ||
ecdb6d1a | 1437 | fpack-struct |
87c75316 | 1438 | Common Report Var(flag_pack_struct) Optimization |
72528c71 | 1439 | Pack structure members together without holes |
ecdb6d1a | 1440 | |
6b5553e5 | 1441 | fpack-struct= |
87c75316 | 1442 | Common RejectNegative Joined UInteger Optimization |
6b5553e5 | 1443 | -fpack-struct=<number> Set initial maximum structure member alignment |
1444 | ||
1e06725a | 1445 | fpcc-struct-return |
4aafe913 | 1446 | Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) |
72528c71 | 1447 | Return small aggregates in memory, not registers |
1e06725a | 1448 | |
1449 | fpeel-loops | |
87c75316 | 1450 | Common Report Var(flag_peel_loops) Optimization |
72528c71 | 1451 | Perform loop peeling |
1e06725a | 1452 | |
1453 | fpeephole | |
87c75316 | 1454 | Common Report Var(flag_no_peephole,0) Optimization |
72528c71 | 1455 | Enable machine specific peephole optimizations |
1e06725a | 1456 | |
ecdb6d1a | 1457 | fpeephole2 |
87c75316 | 1458 | Common Report Var(flag_peephole2) Optimization |
72528c71 | 1459 | Enable an RTL peephole pass before sched2 |
ecdb6d1a | 1460 | |
82a16202 | 1461 | fPIC |
1462 | Common Report Var(flag_pic,2) | |
1463 | Generate position-independent code if possible (large mode) | |
1464 | ||
1465 | fPIE | |
1466 | Common Report Var(flag_pie,2) | |
1467 | Generate position-independent code for executables if possible (large mode) | |
1468 | ||
ecdb6d1a | 1469 | fpic |
5461e683 | 1470 | Common Report Var(flag_pic,1) |
82a16202 | 1471 | Generate position-independent code if possible (small mode) |
ecdb6d1a | 1472 | |
1473 | fpie | |
5461e683 | 1474 | Common Report Var(flag_pie,1) |
82a16202 | 1475 | Generate position-independent code for executables if possible (small mode) |
ecdb6d1a | 1476 | |
9227b6fc | 1477 | fplugin= |
f0da0668 | 1478 | Common Joined RejectNegative Var(common_deferred_options) Defer |
9227b6fc | 1479 | Specify a plugin to load |
1480 | ||
1481 | fplugin-arg- | |
f0da0668 | 1482 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf210371 | 1483 | -fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name> |
9227b6fc | 1484 | |
ad4a85ad | 1485 | fpredictive-commoning |
76c71f34 | 1486 | Common Report Var(flag_predictive_commoning) Optimization |
ad4a85ad | 1487 | Run predictive commoning optimization. |
1488 | ||
1e06725a | 1489 | fprefetch-loop-arrays |
cd459e62 | 1490 | Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization |
72528c71 | 1491 | Generate prefetch instructions, if available, for arrays in loops |
1e06725a | 1492 | |
ecdb6d1a | 1493 | fprofile |
2e9da478 | 1494 | Common Report Var(profile_flag) |
72528c71 | 1495 | Enable basic program profiling code |
ecdb6d1a | 1496 | |
1497 | fprofile-arcs | |
2e9da478 | 1498 | Common Report Var(profile_arc_flag) |
72528c71 | 1499 | Insert arc-based program profiling code |
ecdb6d1a | 1500 | |
3e3a0e9c | 1501 | fprofile-dir= |
cc4fa57a | 1502 | Common Joined RejectNegative Var(profile_data_prefix) |
3e3a0e9c | 1503 | Set the top-level directory for storing the profile data. |
1504 | The default is 'pwd'. | |
1505 | ||
e0dc6f2b | 1506 | fprofile-correction |
1507 | Common Report Var(flag_profile_correction) | |
1508 | Enable correction of flow inconsistent profile data input | |
1509 | ||
7dea76ba | 1510 | fprofile-generate |
1511 | Common | |
1512 | Enable common options for generating profile info for profile feedback directed optimizations | |
1513 | ||
3e3a0e9c | 1514 | fprofile-generate= |
1515 | Common Joined RejectNegative | |
1516 | Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir= | |
1517 | ||
7dea76ba | 1518 | fprofile-use |
3e3a0e9c | 1519 | Common Var(flag_profile_use) |
7dea76ba | 1520 | Enable common options for performing profile feedback directed optimizations |
1521 | ||
3e3a0e9c | 1522 | fprofile-use= |
1523 | Common Joined RejectNegative | |
1524 | Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir= | |
1525 | ||
1c6a7b8c | 1526 | fprofile-values |
2e9da478 | 1527 | Common Report Var(flag_profile_values) |
1c6a7b8c | 1528 | Insert code to profile values of expressions |
1529 | ||
1e06725a | 1530 | frandom-seed |
9faf44d6 | 1531 | Common Var(common_deferred_options) Defer |
1e06725a | 1532 | |
1533 | frandom-seed= | |
9faf44d6 | 1534 | Common Joined RejectNegative Var(common_deferred_options) Defer |
53b8e5c1 | 1535 | -frandom-seed=<string> Make compile reproducible using <string> |
1e06725a | 1536 | |
7c6733e8 | 1537 | ; This switch causes the command line that was used to create an |
1538 | ; object file to be recorded into the object file. The exact format | |
1539 | ; of this recording is target and binary file format dependent. | |
1540 | ; It is related to the -fverbose-asm switch, but that switch only | |
1541 | ; records information in the assembler output file as comments, so | |
1542 | ; they never reach the object file. | |
1543 | frecord-gcc-switches | |
1544 | Common Report Var(flag_record_gcc_switches) | |
1545 | Record gcc command line switches in the object file. | |
1546 | ||
1e06725a | 1547 | freg-struct-return |
5461e683 | 1548 | Common Report Var(flag_pcc_struct_return,0) Optimization |
72528c71 | 1549 | Return small aggregates in registers |
1e06725a | 1550 | |
ecdb6d1a | 1551 | fregmove |
87c75316 | 1552 | Common Report Var(flag_regmove) Optimization |
72528c71 | 1553 | Enables a register move optimization |
ecdb6d1a | 1554 | |
1555 | frename-registers | |
87c75316 | 1556 | Common Report Var(flag_rename_registers) Init(2) Optimization |
72528c71 | 1557 | Perform a register renaming optimization pass |
ecdb6d1a | 1558 | |
1559 | freorder-blocks | |
87c75316 | 1560 | Common Report Var(flag_reorder_blocks) Optimization |
72528c71 | 1561 | Reorder basic blocks to improve code placement |
ecdb6d1a | 1562 | |
4f18499c | 1563 | freorder-blocks-and-partition |
87c75316 | 1564 | Common Report Var(flag_reorder_blocks_and_partition) Optimization |
4f18499c | 1565 | Reorder basic blocks and partition into hot and cold sections |
1566 | ||
ecdb6d1a | 1567 | freorder-functions |
87c75316 | 1568 | Common Report Var(flag_reorder_functions) Optimization |
72528c71 | 1569 | Reorder functions to improve code placement |
ecdb6d1a | 1570 | |
1e06725a | 1571 | frerun-cse-after-loop |
c17f64cc | 1572 | Common Report Var(flag_rerun_cse_after_loop) Optimization |
72528c71 | 1573 | Add a common subexpression elimination pass after loop optimizations |
1e06725a | 1574 | |
4f87b914 | 1575 | frerun-loop-opt |
3b0273a1 | 1576 | Common Ignore |
334ec2d8 | 1577 | Does nothing. Preserved for backward compatibility. |
4f87b914 | 1578 | |
5466f589 | 1579 | frounding-math |
ecee1b29 | 1580 | Common Report Var(flag_rounding_math) Optimization SetByCombined |
5466f589 | 1581 | Disable optimizations that assume default FP rounding behavior |
1582 | ||
ecdb6d1a | 1583 | fsched-interblock |
87c75316 | 1584 | Common Report Var(flag_schedule_interblock) Init(1) Optimization |
72528c71 | 1585 | Enable scheduling across basic blocks |
ecdb6d1a | 1586 | |
a7dcf969 | 1587 | fsched-pressure |
1588 | Common Report Var(flag_sched_pressure) Init(0) Optimization | |
1589 | Enable register pressure sensitive insn scheduling | |
1590 | ||
ecdb6d1a | 1591 | fsched-spec |
87c75316 | 1592 | Common Report Var(flag_schedule_speculative) Init(1) Optimization |
72528c71 | 1593 | Allow speculative motion of non-loads |
ecdb6d1a | 1594 | |
1595 | fsched-spec-load | |
87c75316 | 1596 | Common Report Var(flag_schedule_speculative_load) Optimization |
72528c71 | 1597 | Allow speculative motion of some loads |
ecdb6d1a | 1598 | |
1599 | fsched-spec-load-dangerous | |
87c75316 | 1600 | Common Report Var(flag_schedule_speculative_load_dangerous) Optimization |
72528c71 | 1601 | Allow speculative motion of more loads |
ecdb6d1a | 1602 | |
1e06725a | 1603 | fsched-verbose= |
9faf44d6 | 1604 | Common RejectNegative Joined UInteger Var(sched_verbose_param) |
53b8e5c1 | 1605 | -fsched-verbose=<number> Set the verbosity level of the scheduler |
1e06725a | 1606 | |
ecdb6d1a | 1607 | fsched2-use-superblocks |
87c75316 | 1608 | Common Report Var(flag_sched2_use_superblocks) Optimization |
72528c71 | 1609 | If scheduling post reload, do superblock scheduling |
ecdb6d1a | 1610 | |
1611 | fsched2-use-traces | |
3b0273a1 | 1612 | Common Ignore |
fda153ea | 1613 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 1614 | |
1e06725a | 1615 | fschedule-insns |
87c75316 | 1616 | Common Report Var(flag_schedule_insns) Optimization |
72528c71 | 1617 | Reschedule instructions before register allocation |
1e06725a | 1618 | |
1619 | fschedule-insns2 | |
87c75316 | 1620 | Common Report Var(flag_schedule_insns_after_reload) Optimization |
72528c71 | 1621 | Reschedule instructions after register allocation |
1e06725a | 1622 | |
e1ab7874 | 1623 | ; This flag should be on when a target implements non-trivial |
1624 | ; scheduling hooks, maybe saving some information for its own sake. | |
1625 | ; On IA64, for example, this is used for correct bundling. | |
1626 | fselective-scheduling | |
1627 | Common Report Var(flag_selective_scheduling) Optimization | |
1628 | Schedule instructions using selective scheduling algorithm | |
1629 | ||
1630 | fselective-scheduling2 | |
1631 | Common Report Var(flag_selective_scheduling2) Optimization | |
1632 | Run selective scheduling after reload | |
1633 | ||
1634 | fsel-sched-pipelining | |
1635 | Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization | |
1636 | Perform software pipelining of inner loops during selective scheduling | |
1637 | ||
1638 | fsel-sched-pipelining-outer-loops | |
1639 | Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization | |
1640 | Perform software pipelining of outer loops during selective scheduling | |
1641 | ||
1642 | fsel-sched-reschedule-pipelined | |
1643 | Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization | |
1644 | Reschedule pipelined regions without pipelining | |
1645 | ||
82a16202 | 1646 | ; sched_stalled_insns means that insns can be moved prematurely from the queue |
1647 | ; of stalled insns into the ready list. | |
52c4b43f | 1648 | fsched-stalled-insns |
46f8e3b0 | 1649 | Common Report Var(flag_sched_stalled_insns) Optimization UInteger |
52c4b43f | 1650 | Allow premature scheduling of queued insns |
1651 | ||
1652 | fsched-stalled-insns= | |
a0c938f0 | 1653 | Common RejectNegative Joined UInteger |
98b93ebb | 1654 | -fsched-stalled-insns=<number> Set number of queued insns that can be prematurely scheduled |
52c4b43f | 1655 | |
82a16202 | 1656 | ; sched_stalled_insns_dep controls how many recently scheduled cycles will |
1657 | ; be examined for a dependency on a stalled insn that is candidate for | |
1658 | ; premature removal from the queue of stalled insns into the ready list (has | |
1659 | ; an effect only if the flag 'sched_stalled_insns' is set). | |
52c4b43f | 1660 | fsched-stalled-insns-dep |
46f8e3b0 | 1661 | Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger |
52c4b43f | 1662 | Set dependence distance checking in premature scheduling of queued insns |
1663 | ||
1664 | fsched-stalled-insns-dep= | |
1665 | Common RejectNegative Joined UInteger | |
98b93ebb | 1666 | -fsched-stalled-insns-dep=<number> Set dependence distance checking in premature scheduling of queued insns |
52c4b43f | 1667 | |
4d569386 | 1668 | fsched-group-heuristic |
1669 | Common Report Var(flag_sched_group_heuristic) Init(1) Optimization | |
1670 | Enable the group heuristic in the scheduler | |
1671 | ||
1672 | fsched-critical-path-heuristic | |
1673 | Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization | |
1674 | Enable the critical path heuristic in the scheduler | |
1675 | ||
1676 | fsched-spec-insn-heuristic | |
1677 | Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization | |
1678 | Enable the speculative instruction heuristic in the scheduler | |
1679 | ||
4d569386 | 1680 | fsched-rank-heuristic |
1681 | Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization | |
1682 | Enable the rank heuristic in the scheduler | |
1683 | ||
1684 | fsched-last-insn-heuristic | |
1685 | Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization | |
1686 | Enable the last instruction heuristic in the scheduler | |
1687 | ||
1688 | fsched-dep-count-heuristic | |
1689 | Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization | |
1690 | Enable the dependent count heuristic in the scheduler | |
1691 | ||
f2d0e9f1 | 1692 | fsection-anchors |
87c75316 | 1693 | Common Report Var(flag_section_anchors) Optimization |
f2d0e9f1 | 1694 | Access data in the same section from shared anchor points |
1695 | ||
2b74c150 | 1696 | fsee |
3b0273a1 | 1697 | Common Ignore |
1bc99153 | 1698 | Does nothing. Preserved for backward compatibility. |
2b74c150 | 1699 | |
a5b022e7 | 1700 | fzee |
1701 | Common Report Var(flag_zee) Init(0) | |
1702 | Eliminate redundant zero extensions on targets that support implicit extensions. | |
1703 | ||
5fd4bf3b | 1704 | fshow-column |
abf6a617 | 1705 | Common Report Var(flag_show_column) Init(1) |
b559b9e2 | 1706 | Show column numbers in diagnostics, when available. Default on |
5fd4bf3b | 1707 | |
ecdb6d1a | 1708 | fsignaling-nans |
ecee1b29 | 1709 | Common Report Var(flag_signaling_nans) Optimization SetByCombined |
72528c71 | 1710 | Disable optimizations observable by IEEE signaling NaNs |
ecdb6d1a | 1711 | |
893038cd | 1712 | fsigned-zeros |
ecee1b29 | 1713 | Common Report Var(flag_signed_zeros) Init(1) Optimization SetByCombined |
893038cd | 1714 | Disable floating point optimizations that ignore the IEEE signedness of zero |
1715 | ||
ecdb6d1a | 1716 | fsingle-precision-constant |
87c75316 | 1717 | Common Report Var(flag_single_precision_constant) Optimization |
72528c71 | 1718 | Convert floating point constants to single precision constants |
ecdb6d1a | 1719 | |
a9989fb4 | 1720 | fsplit-ivs-in-unroller |
87c75316 | 1721 | Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization |
3284a242 | 1722 | Split lifetimes of induction variables when loops are unrolled |
a9989fb4 | 1723 | |
48b14f50 | 1724 | fsplit-stack |
1725 | Common Report Var(flag_split_stack) Init(-1) | |
1726 | Generate discontiguous stack frames | |
1727 | ||
1a6a0f2a | 1728 | fsplit-wide-types |
e8831472 | 1729 | Common Report Var(flag_split_wide_types) Optimization |
1a6a0f2a | 1730 | Split wide types into independent registers |
1731 | ||
375bb675 | 1732 | fvariable-expansion-in-unroller |
87c75316 | 1733 | Common Report Var(flag_variable_expansion_in_unroller) Optimization |
3284a242 | 1734 | Apply variable expansion when loops are unrolled |
375bb675 | 1735 | |
4852b829 | 1736 | fstack-check= |
1737 | Common Report RejectNegative Joined | |
1738 | -fstack-check=[no|generic|specific] Insert stack checking code into the program | |
1739 | ||
ecdb6d1a | 1740 | fstack-check |
67089c6b | 1741 | Common Alias(fstack-check=, specific, no) |
4852b829 | 1742 | Insert stack checking code into the program. Same as -fstack-check=specific |
ecdb6d1a | 1743 | |
1e06725a | 1744 | fstack-limit |
f0da0668 | 1745 | Common Var(common_deferred_options) Defer |
1e06725a | 1746 | |
941a4893 | 1747 | fstack-limit-register= |
f0da0668 | 1748 | Common RejectNegative Joined Var(common_deferred_options) Defer |
53b8e5c1 | 1749 | -fstack-limit-register=<register> Trap if the stack goes past <register> |
941a4893 | 1750 | |
1751 | fstack-limit-symbol= | |
f0da0668 | 1752 | Common RejectNegative Joined Var(common_deferred_options) Defer |
53b8e5c1 | 1753 | -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name> |
941a4893 | 1754 | |
f1a0edff | 1755 | fstack-protector |
1756 | Common Report Var(flag_stack_protect, 1) | |
1757 | Use propolice as a stack protection method | |
1758 | ||
1759 | fstack-protector-all | |
5461e683 | 1760 | Common Report RejectNegative Var(flag_stack_protect, 2) |
f1a0edff | 1761 | Use a stack protection method for every function |
1762 | ||
990495a7 | 1763 | fstack-usage |
1764 | Common RejectNegative Var(flag_stack_usage) | |
1765 | Output stack usage information on a per-function basis | |
1766 | ||
1e06725a | 1767 | fstrength-reduce |
3b0273a1 | 1768 | Common Ignore |
334ec2d8 | 1769 | Does nothing. Preserved for backward compatibility. |
1e06725a | 1770 | |
82a16202 | 1771 | ; Nonzero if we should do (language-dependent) alias analysis. |
1772 | ; Typically, this analysis will assume that expressions of certain | |
1773 | ; types do not alias expressions of certain other types. Only used | |
1774 | ; if alias analysis (in general) is enabled. | |
ecdb6d1a | 1775 | fstrict-aliasing |
87c75316 | 1776 | Common Report Var(flag_strict_aliasing) Optimization |
72528c71 | 1777 | Assume strict aliasing rules apply |
ecdb6d1a | 1778 | |
981eb798 | 1779 | fstrict-overflow |
1780 | Common Report Var(flag_strict_overflow) | |
1781 | Treat signed overflow as undefined | |
1782 | ||
1e06725a | 1783 | fsyntax-only |
2e9da478 | 1784 | Common Report Var(flag_syntax_only) |
72528c71 | 1785 | Check for syntax errors, then stop |
1e06725a | 1786 | |
ecdb6d1a | 1787 | ftest-coverage |
2e9da478 | 1788 | Common Report Var(flag_test_coverage) |
72528c71 | 1789 | Create data files needed by \"gcov\" |
ecdb6d1a | 1790 | |
1e06725a | 1791 | fthread-jumps |
87c75316 | 1792 | Common Report Var(flag_thread_jumps) Optimization |
72528c71 | 1793 | Perform jump threading optimizations |
1e06725a | 1794 | |
ecdb6d1a | 1795 | ftime-report |
2e9da478 | 1796 | Common Report Var(time_report) |
72528c71 | 1797 | Report the time taken by each compiler pass |
ecdb6d1a | 1798 | |
941a4893 | 1799 | ftls-model= |
d62a5950 | 1800 | Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) |
53b8e5c1 | 1801 | -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model |
941a4893 | 1802 | |
d62a5950 | 1803 | Enum |
1804 | Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) | |
1805 | ||
1806 | EnumValue | |
1807 | Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) | |
1808 | ||
1809 | EnumValue | |
1810 | Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) | |
1811 | ||
1812 | EnumValue | |
1813 | Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) | |
1814 | ||
1815 | EnumValue | |
1816 | Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) | |
1817 | ||
56af936e | 1818 | ftoplevel-reorder |
8188ae06 | 1819 | Common Report Var(flag_toplevel_reorder) Init(2) Optimization |
56af936e | 1820 | Reorder top level functions, variables, and asms |
1821 | ||
1e06725a | 1822 | ftracer |
2e9da478 | 1823 | Common Report Var(flag_tracer) |
72528c71 | 1824 | Perform superblock formation via tail duplication |
1e06725a | 1825 | |
82a16202 | 1826 | ; Zero means that floating-point math operations cannot generate a |
1827 | ; (user-visible) trap. This is the case, for example, in nonstop | |
1828 | ; IEEE 754 arithmetic. | |
ecdb6d1a | 1829 | ftrapping-math |
ecee1b29 | 1830 | Common Report Var(flag_trapping_math) Init(1) Optimization SetByCombined |
72528c71 | 1831 | Assume floating-point operations can trap |
ecdb6d1a | 1832 | |
1833 | ftrapv | |
87c75316 | 1834 | Common Report Var(flag_trapv) Optimization |
72528c71 | 1835 | Trap for signed overflow in addition, subtraction and multiplication |
ecdb6d1a | 1836 | |
4ee9c684 | 1837 | ftree-ccp |
87c75316 | 1838 | Common Report Var(flag_tree_ccp) Optimization |
4ee9c684 | 1839 | Enable SSA-CCP optimization on trees |
1840 | ||
b7e55469 | 1841 | ftree-bit-ccp |
1842 | Common Report Var(flag_tree_bit_ccp) Optimization | |
1843 | Enable SSA-BIT-CCP optimization on trees | |
1844 | ||
88dbf20f | 1845 | ftree-store-ccp |
3b0273a1 | 1846 | Common Ignore |
61207d43 | 1847 | Does nothing. Preserved for backward compatibility. |
88dbf20f | 1848 | |
4ee9c684 | 1849 | ftree-ch |
87c75316 | 1850 | Common Report Var(flag_tree_ch) Optimization |
4ee9c684 | 1851 | Enable loop header copying on trees |
1852 | ||
4ee9c684 | 1853 | ftree-copyrename |
87c75316 | 1854 | Common Report Var(flag_tree_copyrename) Optimization |
3284a242 | 1855 | Replace SSA temporaries with better names in copies |
4ee9c684 | 1856 | |
88dbf20f | 1857 | ftree-copy-prop |
87c75316 | 1858 | Common Report Var(flag_tree_copy_prop) Optimization |
88dbf20f | 1859 | Enable copy propagation on trees |
1860 | ||
1861 | ftree-store-copy-prop | |
3b0273a1 | 1862 | Common Ignore |
578ef723 | 1863 | Does nothing. Preserved for backward compatibility. |
88dbf20f | 1864 | |
e6d0e152 | 1865 | ftree-cselim |
1866 | Common Report Var(flag_tree_cselim) Init(2) Optimization | |
1867 | Transform condition stores into unconditional ones | |
1868 | ||
a347af29 | 1869 | ftree-switch-conversion |
1870 | Common Report Var(flag_tree_switch_conversion) Optimization | |
1871 | Perform conversions of switch initializations. | |
1872 | ||
4ee9c684 | 1873 | ftree-dce |
87c75316 | 1874 | Common Report Var(flag_tree_dce) Optimization |
4ee9c684 | 1875 | Enable SSA dead code elimination optimization on trees |
1876 | ||
1877 | ftree-dominator-opts | |
87c75316 | 1878 | Common Report Var(flag_tree_dom) Optimization |
4ee9c684 | 1879 | Enable dominator optimizations |
1880 | ||
1881 | ftree-dse | |
87c75316 | 1882 | Common Report Var(flag_tree_dse) Optimization |
4ee9c684 | 1883 | Enable dead store elimination |
1884 | ||
408c3c77 | 1885 | ftree-forwprop |
1886 | Common Report Var(flag_tree_forwprop) Init(1) Optimization | |
1887 | Enable forward propagation on trees | |
1888 | ||
591c2a30 | 1889 | ftree-fre |
87c75316 | 1890 | Common Report Var(flag_tree_fre) Optimization |
591c2a30 | 1891 | Enable Full Redundancy Elimination (FRE) on trees |
1892 | ||
801c5610 | 1893 | ftree-loop-distribution |
2b945500 | 1894 | Common Report Var(flag_tree_loop_distribution) Optimization |
801c5610 | 1895 | Enable loop distribution on trees |
1896 | ||
0acf3477 | 1897 | ftree-loop-distribute-patterns |
1898 | Common Report Var(flag_tree_loop_distribute_patterns) Optimization | |
1899 | Enable loop distribution for patterns transformed into a library call | |
1900 | ||
41b5cc78 | 1901 | ftree-loop-im |
87c75316 | 1902 | Common Report Var(flag_tree_loop_im) Init(1) Optimization |
7d23383d | 1903 | Enable loop invariant motion on trees |
1904 | ||
60cfcb79 | 1905 | ftree-loop-linear |
464a406e | 1906 | Common Alias(floop-interchange) |
1907 | Enable loop interchange transforms. Same as -floop-interchange | |
60cfcb79 | 1908 | |
41b5cc78 | 1909 | ftree-loop-ivcanon |
87c75316 | 1910 | Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization |
41b5cc78 | 1911 | Create canonical induction variables in loops |
1912 | ||
dcb9eccb | 1913 | ftree-loop-optimize |
87c75316 | 1914 | Common Report Var(flag_tree_loop_optimize) Init(1) Optimization |
dcb9eccb | 1915 | Enable loop optimizations on tree level |
1916 | ||
28c92cbb | 1917 | ftree-parallelize-loops= |
212cc995 | 1918 | Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) |
28c92cbb | 1919 | Enable automatic parallelization of loops |
1920 | ||
408c3c77 | 1921 | ftree-phiprop |
1922 | Common Report Var(flag_tree_phiprop) Init(1) Optimization | |
1923 | Enable hoisting loads from conditional pointers. | |
1924 | ||
4ee9c684 | 1925 | ftree-pre |
87c75316 | 1926 | Common Report Var(flag_tree_pre) Optimization |
4ee9c684 | 1927 | Enable SSA-PRE optimization on trees |
1928 | ||
408c3c77 | 1929 | ftree-pta |
1930 | Common Report Var(flag_tree_pta) Init(1) Optimization | |
1931 | Perform function-local points-to analysis on trees. | |
1932 | ||
621a93b1 | 1933 | ftree-reassoc |
1934 | Common Report Var(flag_tree_reassoc) Init(1) Optimization | |
1935 | Enable reassociation on tree level | |
1936 | ||
2be14d8b | 1937 | ftree-salias |
3b0273a1 | 1938 | Common Ignore |
70393469 | 1939 | Does nothing. Preserved for backward compatibility. |
2be14d8b | 1940 | |
5e733b02 | 1941 | ftree-sink |
87c75316 | 1942 | Common Report Var(flag_tree_sink) Optimization |
5e733b02 | 1943 | Enable SSA code sinking on trees |
1944 | ||
4ee9c684 | 1945 | ftree-sra |
87c75316 | 1946 | Common Report Var(flag_tree_sra) Optimization |
4ee9c684 | 1947 | Perform scalar replacement of aggregates |
1948 | ||
1949 | ftree-ter | |
c17f64cc | 1950 | Common Report Var(flag_tree_ter) Optimization |
4ee9c684 | 1951 | Replace temporary expressions in the SSA->normal pass |
1952 | ||
87c75316 | 1953 | ftree-lrs |
1954 | Common Report Var(flag_tree_live_range_split) Optimization | |
1955 | Perform live range splitting during the SSA->normal pass | |
1956 | ||
88dbf20f | 1957 | ftree-vrp |
87c75316 | 1958 | Common Report Var(flag_tree_vrp) Init(0) Optimization |
88dbf20f | 1959 | Perform Value Range Propagation on trees |
1960 | ||
1e06725a | 1961 | funit-at-a-time |
8188ae06 | 1962 | Common Report Var(flag_unit_at_a_time) Init(1) Optimization |
72528c71 | 1963 | Compile whole compilation unit at a time |
1e06725a | 1964 | |
1965 | funroll-loops | |
87c75316 | 1966 | Common Report Var(flag_unroll_loops) Optimization |
72528c71 | 1967 | Perform loop unrolling when iteration count is known |
1e06725a | 1968 | |
1969 | funroll-all-loops | |
87c75316 | 1970 | Common Report Var(flag_unroll_all_loops) Optimization |
72528c71 | 1971 | Perform loop unrolling for all loops |
1e06725a | 1972 | |
7e3cc681 | 1973 | ; Nonzero means that loop optimizer may assume that the induction variables |
1974 | ; that control loops do not overflow and that the loops with nontrivial | |
1975 | ; exit condition are not infinite | |
1976 | funsafe-loop-optimizations | |
87c75316 | 1977 | Common Report Var(flag_unsafe_loop_optimizations) Optimization |
7e3cc681 | 1978 | Allow loop optimizations to assume that the loops behave in normal way |
1979 | ||
49d060d7 | 1980 | fassociative-math |
ecee1b29 | 1981 | Common Report Var(flag_associative_math) SetByCombined |
49d060d7 | 1982 | Allow optimization for floating-point arithmetic which may change the |
1983 | result of the operation due to rounding. | |
1984 | ||
1985 | freciprocal-math | |
ecee1b29 | 1986 | Common Report Var(flag_reciprocal_math) SetByCombined |
49d060d7 | 1987 | Same as -fassociative-math for expressions which include division. |
1988 | ||
82a16202 | 1989 | ; Nonzero means that unsafe floating-point math optimizations are allowed |
1990 | ; for the sake of speed. IEEE compliance is not guaranteed, and operations | |
1991 | ; are allowed to assume that their arguments and results are "normal" | |
1992 | ; (e.g., nonnegative for SQRT). | |
ecdb6d1a | 1993 | funsafe-math-optimizations |
ecee1b29 | 1994 | Common Report Var(flag_unsafe_math_optimizations) Optimization SetByCombined |
72528c71 | 1995 | Allow math optimizations that may violate IEEE or ISO standards |
ecdb6d1a | 1996 | |
1e06725a | 1997 | funswitch-loops |
87c75316 | 1998 | Common Report Var(flag_unswitch_loops) Optimization |
72528c71 | 1999 | Perform loop unswitching |
1e06725a | 2000 | |
ecdb6d1a | 2001 | funwind-tables |
87c75316 | 2002 | Common Report Var(flag_unwind_tables) Optimization |
72528c71 | 2003 | Just generate unwind tables for exception handling |
ecdb6d1a | 2004 | |
386fbe6a | 2005 | fuse-linker-plugin |
2006 | Common Undocumented | |
2007 | ||
0f8defe5 | 2008 | ; Positive if we should track variables, negative if we should run |
2009 | ; the var-tracking pass only to discard debug annotations, zero if | |
2010 | ; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it | |
2011 | ; will be set according to optimize, debug_info_level and debug_hooks | |
2012 | ; in process_options (). | |
5923a5e7 | 2013 | fvar-tracking |
0f8defe5 | 2014 | Common Report Var(flag_var_tracking) Init(2) Optimization |
5923a5e7 | 2015 | Perform variable tracking |
2016 | ||
0f8defe5 | 2017 | ; Positive if we should track variables at assignments, negative if |
2018 | ; we should run the var-tracking pass only to discard debug | |
2019 | ; annotations. When flag_var_tracking_assignments == | |
2020 | ; AUTODETECT_VALUE it will be set according to flag_var_tracking. | |
9845d120 | 2021 | fvar-tracking-assignments |
0f8defe5 | 2022 | Common Report Var(flag_var_tracking_assignments) Init(2) Optimization |
9845d120 | 2023 | Perform variable tracking by annotating assignments |
2024 | ||
0f8defe5 | 2025 | ; Nonzero if we should toggle flag_var_tracking_assignments after |
2026 | ; processing options and computing its default. */ | |
9845d120 | 2027 | fvar-tracking-assignments-toggle |
0f8defe5 | 2028 | Common Report Var(flag_var_tracking_assignments_toggle) Optimization |
9845d120 | 2029 | Toggle -fvar-tracking-assignments |
2030 | ||
d53bb226 | 2031 | fvar-tracking-uninit |
2032 | Common Report Var(flag_var_tracking_uninit) Optimization | |
2033 | Perform variable tracking and also tag variables that are uninitialized | |
2034 | ||
c91e8223 | 2035 | ftree-vectorize |
87c75316 | 2036 | Common Report Var(flag_tree_vectorize) Optimization |
c91e8223 | 2037 | Enable loop vectorization on trees |
2038 | ||
37545e54 | 2039 | ftree-slp-vectorize |
2040 | Common Report Var(flag_tree_slp_vectorize) Init(2) Optimization | |
2041 | Enable basic block vectorization (SLP) on trees | |
2042 | ||
867c03eb | 2043 | fvect-cost-model |
2044 | Common Report Var(flag_vect_cost_model) Optimization | |
2045 | Enable use of cost model in vectorization | |
2046 | ||
25e3c2e8 | 2047 | ftree-vect-loop-version |
87c75316 | 2048 | Common Report Var(flag_tree_vect_loop_version) Init(1) Optimization |
25e3c2e8 | 2049 | Enable loop versioning when doing loop vectorization on trees |
2050 | ||
459e8543 | 2051 | ftree-vectorizer-verbose= |
295e1243 | 2052 | Common RejectNegative Joined UInteger |
98b93ebb | 2053 | -ftree-vectorizer-verbose=<number> Set the verbosity level of the vectorizer |
459e8543 | 2054 | |
2a6e95ba | 2055 | ftree-scev-cprop |
e8831472 | 2056 | Common Report Var(flag_tree_scev_cprop) Init(1) Optimization |
2a6e95ba | 2057 | Enable copy propagation of scalar-evolution information. |
2058 | ||
82a16202 | 2059 | ; -fverbose-asm causes extra commentary information to be produced in |
2060 | ; the generated assembly code (to make it more readable). This option | |
2061 | ; is generally only of use to those who actually need to read the | |
2062 | ; generated assembly code (perhaps while debugging the compiler itself). | |
2063 | ; -fno-verbose-asm, the default, causes the extra information | |
2064 | ; to not be added and is useful when comparing two assembler files. | |
ecdb6d1a | 2065 | fverbose-asm |
2e9da478 | 2066 | Common Report Var(flag_verbose_asm) |
72528c71 | 2067 | Add extra commentary to assembler output |
ecdb6d1a | 2068 | |
b212f378 | 2069 | fvisibility= |
d62a5950 | 2070 | Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) |
b212f378 | 2071 | -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility |
2072 | ||
d62a5950 | 2073 | Enum |
2074 | Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) | |
2075 | ||
2076 | EnumValue | |
2077 | Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) | |
2078 | ||
2079 | EnumValue | |
2080 | Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) | |
2081 | ||
2082 | EnumValue | |
2083 | Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) | |
2084 | ||
2085 | EnumValue | |
2086 | Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) | |
b212f378 | 2087 | |
1c6a7b8c | 2088 | fvpt |
87c75316 | 2089 | Common Report Var(flag_value_profile_transformations) Optimization |
1c6a7b8c | 2090 | Use expression value profiles in optimizations |
2091 | ||
eeb4a70e | 2092 | fweb |
87c75316 | 2093 | Common Report Var(flag_web) Init(2) Optimization |
eeb4a70e | 2094 | Construct webs and split unrelated uses of single variable |
2095 | ||
e6a23add | 2096 | ftree-builtin-call-dce |
2097 | Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization | |
2098 | Enable conditional dead code elimination for builtin calls | |
2099 | ||
62eec3b4 | 2100 | fwhole-program |
87c75316 | 2101 | Common Report Var(flag_whole_program) Init(0) Optimization |
62eec3b4 | 2102 | Perform whole program optimizations |
2103 | ||
ecdb6d1a | 2104 | fwrapv |
87c75316 | 2105 | Common Report Var(flag_wrapv) Optimization |
72528c71 | 2106 | Assume signed arithmetic overflow wraps around |
ecdb6d1a | 2107 | |
ecdb6d1a | 2108 | fzero-initialized-in-bss |
2e9da478 | 2109 | Common Report Var(flag_zero_initialized_in_bss) Init(1) |
72528c71 | 2110 | Put zero initialized data in the bss section |
ecdb6d1a | 2111 | |
6f2f567f | 2112 | g |
2113 | Common JoinedOrMissing | |
b0e56fb1 | 2114 | Generate debug information in default format |
2115 | ||
2116 | gcoff | |
3d3b9d5b | 2117 | Common JoinedOrMissing Negative(gdwarf-) |
b0e56fb1 | 2118 | Generate debug information in COFF format |
2119 | ||
3d3b9d5b | 2120 | gdwarf- |
2121 | Common Joined UInteger Var(dwarf_version) Init(2) Negative(gstabs) | |
2122 | Generate debug information in DWARF v2 (or later) format | |
b0e56fb1 | 2123 | |
2124 | ggdb | |
2125 | Common JoinedOrMissing | |
2126 | Generate debug information in default extended format | |
2127 | ||
2128 | gstabs | |
a1baa5f1 | 2129 | Common JoinedOrMissing Negative(gstabs+) |
b0e56fb1 | 2130 | Generate debug information in STABS format |
2131 | ||
2132 | gstabs+ | |
a1baa5f1 | 2133 | Common JoinedOrMissing Negative(gvms) |
b0e56fb1 | 2134 | Generate debug information in extended STABS format |
2135 | ||
c16b6d19 | 2136 | gno-strict-dwarf |
024fa7dd | 2137 | Common RejectNegative Var(dwarf_strict,0) Init(-1) |
c16b6d19 | 2138 | Emit DWARF additions beyond selected version |
2139 | ||
2140 | gstrict-dwarf | |
5461e683 | 2141 | Common Report RejectNegative Var(dwarf_strict,1) |
c16b6d19 | 2142 | Don't emit DWARF additions beyond selected version |
2143 | ||
71278019 | 2144 | gtoggle |
2145 | Common Report Var(flag_gtoggle) | |
2146 | Toggle debug information generation | |
2147 | ||
b0e56fb1 | 2148 | gvms |
a1baa5f1 | 2149 | Common JoinedOrMissing Negative(gxcoff) |
b0e56fb1 | 2150 | Generate debug information in VMS format |
2151 | ||
2152 | gxcoff | |
a1baa5f1 | 2153 | Common JoinedOrMissing Negative(gxcoff+) |
b0e56fb1 | 2154 | Generate debug information in XCOFF format |
2155 | ||
2156 | gxcoff+ | |
a1baa5f1 | 2157 | Common JoinedOrMissing Negative(gcoff) |
b0e56fb1 | 2158 | Generate debug information in extended XCOFF format |
6f2f567f | 2159 | |
f37ef985 | 2160 | h |
2161 | Driver Joined Separate | |
2162 | ||
19bc000d | 2163 | iplugindir= |
2164 | Common Joined Var(plugindir_string) Init(0) | |
2165 | -iplugindir=<dir> Set <dir> to be the default plugin directory | |
2166 | ||
e28aa114 | 2167 | l |
2168 | Driver Joined Separate | |
2169 | ||
3bfde2af | 2170 | n |
2171 | Driver | |
2172 | ||
e28aa114 | 2173 | no-canonical-prefixes |
2174 | Driver | |
2175 | ||
cb22f930 | 2176 | nodefaultlibs |
2177 | Driver | |
2178 | ||
286f96fe | 2179 | nostartfiles |
2180 | Driver | |
2181 | ||
cb22f930 | 2182 | nostdlib |
2183 | Driver | |
2184 | ||
e690b385 | 2185 | o |
6bd9d862 | 2186 | Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) |
53b8e5c1 | 2187 | -o <file> Place output into <file> |
e690b385 | 2188 | |
2189 | p | |
2e9da478 | 2190 | Common Var(profile_flag) |
53b8e5c1 | 2191 | Enable function profiling |
e690b385 | 2192 | |
e28aa114 | 2193 | pass-exit-codes |
2194 | Driver Var(pass_exit_codes) | |
2195 | ||
e690b385 | 2196 | pedantic |
2e9da478 | 2197 | Common Var(pedantic) |
53b8e5c1 | 2198 | Issue warnings needed for strict compliance to the standard |
e690b385 | 2199 | |
2200 | pedantic-errors | |
6bd9d862 | 2201 | Common Var(flag_pedantic_errors) |
53b8e5c1 | 2202 | Like -pedantic but issue them as errors |
e690b385 | 2203 | |
cb22f930 | 2204 | pg |
2205 | Driver | |
2206 | ||
e28aa114 | 2207 | pipe |
2208 | Driver Var(use_pipes) | |
2209 | ||
2210 | print-file-name= | |
2211 | Driver JoinedOrMissing Var(print_file_name) | |
2212 | ||
2213 | print-libgcc-file-name | |
2214 | Driver | |
2215 | ||
2216 | print-multi-directory | |
2217 | Driver Var(print_multi_directory) | |
2218 | ||
2219 | print-multi-lib | |
2220 | Driver Var(print_multi_lib) | |
2221 | ||
2222 | print-multi-os-directory | |
2223 | Driver Var(print_multi_os_directory) | |
2224 | ||
2225 | print-prog-name= | |
2226 | Driver JoinedOrMissing Var(print_prog_name) | |
2227 | ||
2228 | print-search-dirs | |
2229 | Driver Var(print_search_dirs) | |
2230 | ||
2231 | print-sysroot | |
2232 | Driver Var(print_sysroot) | |
2233 | ||
2234 | print-sysroot-headers-suffix | |
2235 | Driver Var(print_sysroot_headers_suffix) | |
2236 | ||
3272db82 | 2237 | quiet |
e28aa114 | 2238 | Common Var(quiet_flag) RejectDriver |
53b8e5c1 | 2239 | Do not display functions compiled or elapsed time |
3272db82 | 2240 | |
3bfde2af | 2241 | r |
2242 | Driver | |
2243 | ||
2244 | s | |
2245 | Driver | |
2246 | ||
e28aa114 | 2247 | save-temps |
2248 | Driver | |
2249 | ||
2250 | save-temps= | |
2251 | Driver Joined | |
2252 | ||
3bfde2af | 2253 | t |
2254 | Driver | |
2255 | ||
e28aa114 | 2256 | time |
2257 | Driver Var(report_times) | |
2258 | ||
2259 | time= | |
2260 | Driver JoinedOrMissing | |
2261 | ||
5789e05b | 2262 | u |
2263 | Driver Joined Separate | |
2264 | ||
4b2a05b6 | 2265 | undef |
2266 | Driver | |
2267 | ; C option, but driver must not handle as "-u ndef". | |
2268 | ||
e28aa114 | 2269 | v |
6bd9d862 | 2270 | Common Driver Var(verbose_flag) |
2271 | Enable verbose output | |
e28aa114 | 2272 | |
e690b385 | 2273 | version |
e28aa114 | 2274 | Common Var(version_flag) RejectDriver |
53b8e5c1 | 2275 | Display the compiler's version |
e690b385 | 2276 | |
2277 | w | |
2e9da478 | 2278 | Common Var(inhibit_warnings) |
53b8e5c1 | 2279 | Suppress warnings |
e690b385 | 2280 | |
e28aa114 | 2281 | wrapper |
2282 | Driver Separate Var(wrapper_string) | |
2283 | ||
2284 | x | |
2285 | Driver Joined Separate | |
2286 | ||
794febf8 | 2287 | shared |
2288 | Common RejectNegative Negative(pie) | |
2289 | Create a shared library | |
2290 | ||
e28aa114 | 2291 | shared-libgcc |
2292 | Driver | |
2293 | ||
2294 | specs | |
67089c6b | 2295 | Driver Separate Alias(specs=) |
e28aa114 | 2296 | |
2297 | specs= | |
2298 | Driver Joined | |
2299 | ||
cb22f930 | 2300 | static |
2301 | Driver | |
2302 | ||
e28aa114 | 2303 | static-libgcc |
2304 | Driver | |
2305 | ||
2306 | static-libgfortran | |
2307 | Driver | |
2308 | ; Documented for Fortran, but always accepted by driver. | |
2309 | ||
2310 | static-libstdc++ | |
2311 | Driver | |
2312 | ||
e440a328 | 2313 | static-libgo |
2314 | Driver | |
2315 | ; Documented for Go, but always accepted by driver. | |
2316 | ||
5789e05b | 2317 | symbolic |
2318 | Driver | |
2319 | ||
794febf8 | 2320 | pie |
2321 | Common RejectNegative Negative(shared) | |
2322 | Create a position independent executable | |
2323 | ||
f37ef985 | 2324 | z |
2325 | Driver Joined Separate | |
2326 | ||
3272db82 | 2327 | ; This comment is to ensure we retain the blank line above. |