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3272db82 | 1 | ; Options for the language- and target-independent parts of the compiler. |
2e9da478 | 2 | |
fbd26352 | 3 | ; Copyright (C) 2003-2019 Free Software Foundation, Inc. |
3272db82 | 4 | ; |
5 | ; This file is part of GCC. | |
6 | ; | |
7 | ; GCC is free software; you can redistribute it and/or modify it under | |
8 | ; the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 9 | ; Software Foundation; either version 3, or (at your option) any later |
3272db82 | 10 | ; version. |
a0c938f0 | 11 | ; |
3272db82 | 12 | ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | ; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | ; for more details. | |
a0c938f0 | 16 | ; |
3272db82 | 17 | ; You should have received a copy of the GNU General Public License |
8c4c00c1 | 18 | ; along with GCC; see the file COPYING3. If not see |
19 | ; <http://www.gnu.org/licenses/>. | |
3272db82 | 20 | |
a4b0007b | 21 | ; See the GCC internals manual (options.texi) for a description of this file's format. |
3272db82 | 22 | |
23 | ; Please try to keep this file in ASCII collating order. | |
24 | ||
0f8defe5 | 25 | Variable |
26 | int target_flags | |
27 | ||
2c5d2e39 | 28 | Variable |
29 | int optimize | |
30 | ||
31 | Variable | |
32 | int optimize_size | |
33 | ||
9b0d2865 | 34 | Variable |
35 | int optimize_debug | |
36 | ||
d2807aa3 | 37 | ; Not used directly to control optimizations, only to save -Ofast |
38 | ; setting for "optimize" attributes. | |
39 | Variable | |
40 | int optimize_fast | |
41 | ||
90336809 | 42 | ; True if this is the lto front end. This is used to disable gimple |
43 | ; generation and lowering passes that are normally run on the output | |
44 | ; of a front end. These passes must be bypassed for lto since they | |
45 | ; have already been done before the gimple was written. | |
46 | Variable | |
47 | bool in_lto_p = false | |
48 | ||
4c4a180d | 49 | ; This variable is set to non-0 only by LTO front-end. 1 indicates that |
50 | ; the output produced will be used for incrmeental linking (thus weak symbols | |
278cec16 | 51 | ; can still be bound) and 2 indicates that the IL is going to be linked and |
52 | ; and output to LTO object file. | |
4c4a180d | 53 | Variable |
278cec16 | 54 | enum incremental_link flag_incremental_link = INCREMENTAL_LINK_NONE |
4c4a180d | 55 | |
f3f006ad | 56 | ; 0 means straightforward implementation of complex divide acceptable. |
57 | ; 1 means wide ranges of inputs must work for complex divide. | |
58 | ; 2 means C99-like requirements for complex multiply and divide. | |
59 | Variable | |
60 | int flag_complex_method = 1 | |
61 | ||
f3f006ad | 62 | ; Language specific warning pass for unused results. |
63 | Variable | |
64 | bool flag_warn_unused_result = false | |
65 | ||
56f280c4 | 66 | Variable |
67 | int *param_values | |
68 | ||
6bd9d862 | 69 | ; Nonzero if we should write GIMPLE bytecode for link-time optimization. |
70 | Variable | |
71 | int flag_generate_lto | |
72 | ||
9f28dc4c | 73 | ; Nonzero if we should write GIMPLE bytecode for offload compilation. |
74 | Variable | |
75 | int flag_generate_offload = 0 | |
76 | ||
6bd9d862 | 77 | ; Nonzero means we should be saving declaration info into a .X file. |
78 | Variable | |
79 | int flag_gen_aux_info = 0 | |
80 | ||
81 | ; Nonzero if we are compiling code for a shared library, zero for | |
82 | ; executable. | |
83 | Variable | |
84 | int flag_shlib | |
85 | ||
470a0ecd | 86 | ; These two are really VEC(char_p,heap) *. |
87 | ||
88 | Variable | |
89 | void *flag_instrument_functions_exclude_functions | |
90 | ||
91 | Variable | |
92 | void *flag_instrument_functions_exclude_files | |
93 | ||
d7175aef | 94 | ; Generic structs (e.g. templates not explicitly specialized) |
95 | ; may not have a compilation unit associated with them, and so | |
96 | ; may need to be treated differently from ordinary structs. | |
97 | ; | |
98 | ; Structs only handled by reference (indirectly), will also usually | |
99 | ; not need as much debugging information. | |
100 | ||
101 | Variable | |
102 | enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
103 | ||
104 | Variable | |
105 | enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
106 | ||
cc4fa57a | 107 | ; True if we should exit after parsing options. |
108 | Variable | |
109 | bool exit_after_options | |
110 | ||
111 | ; Type(s) of debugging information we are producing (if any). See | |
112 | ; flag-types.h for the definitions of the different possible types of | |
113 | ; debugging information. | |
114 | Variable | |
115 | enum debug_info_type write_symbols = NO_DEBUG | |
116 | ||
117 | ; Level of debugging information we are producing. See flag-types.h | |
118 | ; for the definitions of the different possible levels. | |
119 | Variable | |
120 | enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE | |
121 | ||
122 | ; Nonzero means use GNU-only extensions in the generated symbolic | |
123 | ; debugging information. Currently, this only has an effect when | |
dc75b246 | 124 | ; write_symbols is set to DBX_DEBUG or XCOFF_DEBUG. |
cc4fa57a | 125 | Variable |
126 | bool use_gnu_debug_info_extensions | |
127 | ||
9faf44d6 | 128 | ; Original value of maximum field alignment in bytes, specified via |
129 | ; -fpack-struct=<value>. | |
130 | Variable | |
131 | unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT | |
132 | ||
ab3728ee | 133 | ; Type of stack check. |
134 | Variable | |
135 | enum stack_check_type flag_stack_check = NO_STACK_CHECK | |
136 | ||
8c0dd614 | 137 | ; True if stack usage information needs to be computed. |
138 | Variable | |
139 | bool flag_stack_usage_info = false | |
140 | ||
9faf44d6 | 141 | ; -dA causes debug commentary information to be produced in |
142 | ; the generated assembly code (to make it more readable). This option | |
143 | ; is generally only of use to those who actually need to read the | |
144 | ; generated assembly code (perhaps while debugging the compiler itself). | |
145 | ; Currently, this switch is only used by dwarf2out.c; however, it is intended | |
146 | ; to be a catchall for printing debug information in the assembler file. | |
147 | Variable | |
148 | int flag_debug_asm | |
149 | ||
e6c4532a | 150 | ; How many NOP insns to place at each function entry by default |
151 | Variable | |
152 | HOST_WIDE_INT function_entry_patch_area_size | |
153 | ||
154 | ; And how far the real asm entry point is into this area | |
155 | Variable | |
156 | HOST_WIDE_INT function_entry_patch_area_start | |
f78f10d6 | 157 | |
158 | ; Balance between GNAT encodings and standard DWARF to emit. | |
159 | Variable | |
160 | enum dwarf_gnat_encodings gnat_encodings = DWARF_GNAT_ENCODINGS_DEFAULT | |
161 | ||
9faf44d6 | 162 | ; -dP causes the rtl to be emitted as a comment in assembly. |
163 | Variable | |
164 | int flag_dump_rtl_in_asm | |
165 | ||
166 | ; Whether -da was passed (used only in handle_common_deferred_options). | |
167 | Variable | |
168 | bool flag_dump_all_passed | |
169 | ||
170 | ; Other flags saying which kinds of debugging dump have been requested. | |
171 | ||
172 | Variable | |
173 | int rtl_dump_and_exit | |
174 | ||
175 | Variable | |
176 | int flag_print_asm_name | |
177 | ||
0e763b2a | 178 | ; Name of top-level original source file (what was input to cpp). |
179 | ; This comes from the #-command at the beginning of the actual input. | |
180 | ; If there isn't any there, then this is the cc1 input file name. | |
181 | Variable | |
182 | const char *main_input_filename | |
183 | ||
184 | ; Pointer to base name in main_input_filename, with directories and a | |
185 | ; single final extension removed, and the length of this base | |
186 | ; name. | |
187 | ||
188 | Variable | |
189 | const char *main_input_basename | |
190 | ||
191 | Variable | |
192 | int main_input_baselength | |
193 | ||
9faf44d6 | 194 | ; Which options have been printed by --help. |
195 | Variable | |
196 | char *help_printed | |
197 | ||
d62a5950 | 198 | ; Which enums have been printed by --help. 0 = not printed, no |
199 | ; relevant options seen, 1 = relevant option seen, not yet printed, 2 | |
200 | ; = printed. | |
201 | Variable | |
202 | char *help_enum_printed | |
203 | ||
9faf44d6 | 204 | ; The number of columns for --help output. |
205 | Variable | |
206 | unsigned int help_columns | |
207 | ||
208 | ; Whether this options structure has been through finish_options | |
209 | Variable | |
210 | bool flag_opts_finished | |
211 | ||
9e46467d | 212 | ; What the sanitizer should instrument |
213 | Variable | |
214 | unsigned int flag_sanitize | |
215 | ||
c2598081 | 216 | ; What sanitizers should recover from errors |
217 | Variable | |
9917317a | 218 | unsigned int flag_sanitize_recover = (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT | SANITIZE_KERNEL_ADDRESS) & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN) |
c2598081 | 219 | |
ccec7674 | 220 | ; What the coverage sanitizers should instrument |
221 | Variable | |
222 | unsigned int flag_sanitize_coverage | |
d29e939c | 223 | |
6aaca0b4 | 224 | ; Flag whether a prefix has been added to dump_base_name |
225 | Variable | |
226 | bool dump_base_name_prefixed = false | |
227 | ||
56686608 | 228 | ; Flag whether HSA generation has been explicitely disabled |
229 | Variable | |
230 | bool flag_disable_hsa = false | |
231 | ||
e28aa114 | 232 | ### |
233 | Driver | |
234 | ||
5789e05b | 235 | -assemble |
236 | Driver Alias(S) | |
237 | ||
238 | -compile | |
239 | Driver Alias(c) | |
240 | ||
6e8a18d1 | 241 | -completion= |
242 | Common Driver Joined Undocumented | |
243 | Provide bash completion for options starting with provided string. | |
244 | ||
5789e05b | 245 | -coverage |
246 | Driver Alias(coverage) | |
247 | ||
248 | -debug | |
249 | Common Alias(g) | |
250 | ||
251 | -dump | |
252 | Common Separate Alias(d) | |
253 | ||
254 | -dump= | |
255 | Common Joined Alias(d) | |
256 | ||
257 | -dumpbase | |
258 | Common Separate Alias(dumpbase) | |
259 | ||
260 | -dumpdir | |
261 | Common Separate Alias(dumpdir) | |
262 | ||
263 | -entry | |
264 | Driver Separate Alias(e) | |
265 | ||
266 | -entry= | |
267 | Driver Joined Alias(e) | |
268 | ||
269 | -extra-warnings | |
270 | Common Warning Alias(Wextra) | |
271 | ||
272 | -for-assembler | |
273 | Driver Separate Alias(Xassembler) | |
274 | ||
275 | -for-assembler= | |
276 | Driver JoinedOrMissing Alias(Xassembler) | |
277 | ||
278 | -for-linker | |
279 | Driver Separate Alias(Xlinker) | |
280 | ||
281 | -for-linker= | |
282 | Driver JoinedOrMissing Alias(Xlinker) | |
283 | ||
284 | -force-link | |
285 | Driver Separate Alias(u) | |
286 | ||
287 | -force-link= | |
288 | Driver Joined Alias(u) | |
289 | ||
e690b385 | 290 | -help |
5789e05b | 291 | Common Driver Var(help_flag) |
8fb42bbc | 292 | Display this information. |
e690b385 | 293 | |
87c75316 | 294 | -help= |
e28aa114 | 295 | Common Driver Report Joined |
8fb42bbc | 296 | --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params. |
da3b1bab | 297 | |
5789e05b | 298 | -language |
299 | Driver Separate Alias(x) | |
300 | ||
301 | -language= | |
302 | Driver Joined Alias(x) | |
303 | ||
304 | -library-directory | |
305 | Driver Separate Alias(L) | |
306 | ||
307 | -library-directory= | |
308 | Driver Joined Alias(L) | |
309 | ||
310 | -no-canonical-prefixes | |
311 | Driver Alias(no-canonical-prefixes) | |
312 | ||
313 | -no-standard-libraries | |
314 | Driver Alias(nostdlib) | |
315 | ||
70eb49f5 | 316 | -no-sysroot-suffix |
317 | Driver Var(no_sysroot_suffix) | |
318 | ||
5789e05b | 319 | -no-warnings |
320 | Common Alias(w) | |
321 | ||
322 | -optimize | |
323 | Common Alias(O) | |
324 | ||
325 | -output | |
326 | Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) | |
327 | ||
328 | -output= | |
329 | Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) | |
330 | ||
331 | -pass-exit-codes | |
332 | Driver Alias(pass-exit-codes) | |
333 | ||
334 | -pedantic | |
29438999 | 335 | Common Alias(Wpedantic) |
5789e05b | 336 | |
337 | -pedantic-errors | |
338 | Common Alias(pedantic-errors) | |
339 | ||
340 | -pie | |
1412b935 | 341 | Driver Alias(pie) |
5789e05b | 342 | |
6d1ab23d | 343 | -static-pie |
344 | Driver Alias(static-pie) | |
345 | ||
5789e05b | 346 | -pipe |
347 | Driver Alias(pipe) | |
348 | ||
349 | -prefix | |
350 | Driver Separate Alias(B) | |
351 | ||
352 | -prefix= | |
353 | Driver JoinedOrMissing Alias(B) | |
354 | ||
355 | -preprocess | |
356 | Driver Alias(E) | |
357 | ||
358 | -print-file-name | |
359 | Driver Separate Alias(print-file-name=) | |
360 | ||
361 | -print-file-name= | |
362 | Driver JoinedOrMissing Alias(print-file-name=) | |
363 | ||
364 | -print-libgcc-file-name | |
365 | Driver Alias(print-libgcc-file-name) | |
366 | ||
367 | -print-multi-directory | |
368 | Driver Alias(print-multi-directory) | |
369 | ||
370 | -print-multi-lib | |
371 | Driver Alias(print-multi-lib) | |
372 | ||
373 | -print-multi-os-directory | |
374 | Driver Alias(print-multi-os-directory) | |
375 | ||
77adc39e | 376 | -print-multiarch |
377 | Driver Alias(print-multiarch) | |
378 | ||
5789e05b | 379 | -print-prog-name |
380 | Driver Separate Alias(print-prog-name=) | |
381 | ||
382 | -print-prog-name= | |
383 | Driver JoinedOrMissing Alias(print-prog-name=) | |
384 | ||
385 | -print-search-dirs | |
386 | Driver Alias(print-search-dirs) | |
387 | ||
388 | -print-sysroot | |
389 | Driver Alias(print-sysroot) | |
390 | ||
391 | -print-sysroot-headers-suffix | |
392 | Driver Alias(print-sysroot-headers-suffix) | |
393 | ||
394 | -profile | |
395 | Common Alias(p) | |
396 | ||
397 | -save-temps | |
398 | Driver Alias(save-temps) | |
399 | ||
400 | -shared | |
1412b935 | 401 | Driver Alias(shared) |
5789e05b | 402 | |
403 | -specs | |
404 | Driver Separate Alias(specs=) | |
405 | ||
406 | -specs= | |
407 | Driver Joined Alias(specs=) | |
408 | ||
409 | -static | |
410 | Driver Alias(static) | |
411 | ||
412 | -symbolic | |
413 | Driver Alias(symbolic) | |
414 | ||
e690b385 | 415 | -target-help |
e28aa114 | 416 | Common Driver |
8fb42bbc | 417 | Alias for --help=target. |
87c75316 | 418 | |
5789e05b | 419 | -time |
420 | Driver Alias(time) | |
421 | ||
422 | -verbose | |
423 | Driver Alias(v) | |
424 | ||
425 | ;; The driver used to convert options such as --help into forms such | |
426 | ;; as -fhelp; the following four entries are for compatibility with | |
427 | ;; any direct uses of those (undocumented) -f forms | |
87c75316 | 428 | fhelp |
5789e05b | 429 | Common Driver Alias(-help) |
87c75316 | 430 | |
431 | fhelp= | |
5789e05b | 432 | Common Driver Joined Alias(-help=) |
87c75316 | 433 | |
434 | ftarget-help | |
5789e05b | 435 | Common Driver Alias(-target-help) |
87c75316 | 436 | |
39932bd2 | 437 | fversion |
5789e05b | 438 | Common Driver Alias(-version) |
39932bd2 | 439 | |
87c75316 | 440 | -param |
441 | Common Separate | |
8fb42bbc | 442 | --param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters. |
e690b385 | 443 | |
5789e05b | 444 | -param= |
445 | Common Joined Alias(-param) | |
446 | ||
447 | -sysroot | |
448 | Driver Separate Alias(-sysroot=) | |
449 | ||
e28aa114 | 450 | -sysroot= |
451 | Driver JoinedOrMissing | |
452 | ||
e690b385 | 453 | -version |
e28aa114 | 454 | Common Driver |
455 | ||
456 | B | |
457 | Driver Joined Separate | |
458 | ||
459 | E | |
460 | Driver | |
e690b385 | 461 | |
cb22f930 | 462 | L |
463 | Driver Joined Separate | |
464 | ||
3bfde2af | 465 | N |
466 | Driver | |
467 | ||
da3b1bab | 468 | O |
46f8e3b0 | 469 | Common JoinedOrMissing Optimization |
8fb42bbc | 470 | -O<number> Set optimization level to <number>. |
da3b1bab | 471 | |
472 | Os | |
46f8e3b0 | 473 | Common Optimization |
8fb42bbc | 474 | Optimize for space rather than speed. |
da3b1bab | 475 | |
1ebc0b9f | 476 | Ofast |
477 | Common Optimization | |
8fb42bbc | 478 | Optimize for speed disregarding exact standards compliance. |
1ebc0b9f | 479 | |
9b0d2865 | 480 | Og |
481 | Common Optimization | |
8fb42bbc | 482 | Optimize for debugging experience rather than speed or size. |
9b0d2865 | 483 | |
3bfde2af | 484 | Q |
485 | Driver | |
486 | ||
487 | Qn | |
488 | Driver Negative(Qy) | |
489 | ||
490 | Qy | |
491 | Driver Negative(Qn) | |
492 | ||
f37ef985 | 493 | R |
494 | Driver Joined Separate | |
495 | ||
e28aa114 | 496 | S |
497 | Driver | |
498 | ||
f37ef985 | 499 | T |
500 | Driver Joined Separate | |
501 | ||
502 | Tbss | |
503 | Driver Separate | |
504 | ||
69304750 | 505 | Tbss= |
506 | Driver Joined | |
507 | ||
f37ef985 | 508 | Tdata |
509 | Driver Separate | |
510 | ||
69304750 | 511 | Tdata= |
512 | Driver Joined | |
513 | ||
f37ef985 | 514 | Ttext |
515 | Driver Separate | |
516 | ||
69304750 | 517 | Ttext= |
518 | Driver Joined | |
519 | ||
da3b1bab | 520 | W |
67089c6b | 521 | Common RejectNegative Warning Alias(Wextra) |
8fb42bbc | 522 | This switch is deprecated; use -Wextra instead. |
da3b1bab | 523 | |
e28aa114 | 524 | Wa, |
a1408eb3 | 525 | Driver JoinedOrMissing RejectNegative |
e28aa114 | 526 | |
527 | Wl, | |
a1408eb3 | 528 | Driver JoinedOrMissing RejectNegative |
e28aa114 | 529 | |
530 | Wp, | |
a1408eb3 | 531 | Driver JoinedOrMissing RejectNegative |
e28aa114 | 532 | |
6f2f567f | 533 | Waggregate-return |
87c75316 | 534 | Common Var(warn_aggregate_return) Warning |
8fb42bbc | 535 | Warn about returning structures, unions or arrays. |
6f2f567f | 536 | |
228bf2b8 | 537 | Waggressive-loop-optimizations |
538 | Common Var(warn_aggressive_loop_optimizations) Init(1) Warning | |
8fb42bbc | 539 | Warn if a loop with constant number of iterations triggers undefined behavior. |
228bf2b8 | 540 | |
5bc96398 | 541 | Warray-bounds |
e8831472 | 542 | Common Var(warn_array_bounds) Warning |
8fb42bbc | 543 | Warn if an array is accessed out of bounds. |
5bc96398 | 544 | |
e4fd7af1 | 545 | Warray-bounds= |
52368c34 | 546 | Common Joined RejectNegative UInteger Var(warn_array_bounds) Warning IntegerRange(0, 2) |
8fb42bbc | 547 | Warn if an array is accessed out of bounds. |
e4fd7af1 | 548 | |
9b2d6d13 | 549 | Wattributes |
87c75316 | 550 | Common Var(warn_attributes) Init(1) Warning |
8fb42bbc | 551 | Warn about inappropriate attribute usage. |
9b2d6d13 | 552 | |
7f68559b | 553 | Wattribute-alias |
554 | Common Alias(Wattribute_alias=, 1, 0) Warning | |
898c6fe1 | 555 | Warn about type safety and similar errors and mismatches in declarations with alias attributes. |
7f68559b | 556 | |
08cc1019 | 557 | Wattribute-alias= |
558 | Common Joined RejectNegative UInteger Var(warn_attribute_alias) Init(1) Warning IntegerRange(0, 2) | |
898c6fe1 | 559 | Warn about type safety and similar errors and mismatches in declarations with alias attributes. |
08cc1019 | 560 | |
2832ed10 | 561 | Wcannot-profile |
562 | Common Var(warn_cannot_profile) Init(1) Warning | |
563 | Warn when profiling instrumentation was requested, but could not be applied to | |
564 | a certain function. | |
565 | ||
6f2f567f | 566 | Wcast-align |
87c75316 | 567 | Common Var(warn_cast_align) Warning |
8fb42bbc | 568 | Warn about pointer casts which increase alignment. |
6f2f567f | 569 | |
7ceee42d | 570 | Wcast-align=strict |
571 | Common Var(warn_cast_align,2) Warning | |
572 | Warn about pointer casts which increase alignment. | |
573 | ||
3a79f5da | 574 | Wcpp |
575 | Common Var(warn_cpp) Init(1) Warning | |
8fb42bbc | 576 | Warn when a #warning directive is encountered. |
3a79f5da | 577 | |
1323f5b0 | 578 | Wattribute-warning |
579 | Common Var(warn_attribute_warning) Init(1) Warning | |
580 | Warn about uses of __attribute__((warning)) declarations. | |
581 | ||
9d1cdb74 | 582 | Wdeprecated |
583 | Common Var(warn_deprecated) Init(1) Warning | |
584 | Warn if a deprecated compiler feature, class, method, or field is used. | |
585 | ||
6f2f567f | 586 | Wdeprecated-declarations |
87c75316 | 587 | Common Var(warn_deprecated_decl) Init(1) Warning |
8fb42bbc | 588 | Warn about uses of __attribute__((deprecated)) declarations. |
6f2f567f | 589 | |
590 | Wdisabled-optimization | |
87c75316 | 591 | Common Var(warn_disabled_optimization) Warning |
8fb42bbc | 592 | Warn when an optimization pass is disabled. |
6f2f567f | 593 | |
594 | Werror | |
2e9da478 | 595 | Common Var(warnings_are_errors) |
8fb42bbc | 596 | Treat all warnings as errors. |
6f2f567f | 597 | |
76f02516 | 598 | Werror= |
599 | Common Joined | |
8fb42bbc | 600 | Treat specified warning as error. |
76f02516 | 601 | |
da3b1bab | 602 | Wextra |
a0ded67b | 603 | Common Var(extra_warnings) Warning |
8fb42bbc | 604 | Print extra (possibly unwanted) warnings. |
da3b1bab | 605 | |
295acf4f | 606 | Wfatal-errors |
2e9da478 | 607 | Common Var(flag_fatal_errors) |
8fb42bbc | 608 | Exit on the first error occurred. |
295acf4f | 609 | |
6fdade09 | 610 | Wframe-larger-than= |
8e18705e | 611 | Common RejectNegative Joined Host_Wide_Int ByteSize Warning Var(warn_frame_larger_than_size) Init(HOST_WIDE_INT_MAX) |
612 | -Wframe-larger-than=<byte-size> Warn if a function's stack frame requires in excess of <byte-size>. | |
6fdade09 | 613 | |
f74ea1c2 | 614 | Wfree-nonheap-object |
615 | Common Var(warn_free_nonheap_object) Init(1) Warning | |
8fb42bbc | 616 | Warn when attempting to free a non-heap object. |
f74ea1c2 | 617 | |
56686608 | 618 | Whsa |
619 | Common Var(warn_hsa) Init(1) Warning | |
620 | Warn when a function cannot be expanded to HSAIL. | |
621 | ||
3c77f69c | 622 | Wimplicit-fallthrough |
12663602 | 623 | Common Alias(Wimplicit-fallthrough=,3,0) Warning |
624 | ||
625 | Wimplicit-fallthrough= | |
52368c34 | 626 | Common Var(warn_implicit_fallthrough) RejectNegative Joined UInteger Warning IntegerRange(0, 5) |
3c77f69c | 627 | Warn when a switch case falls through. |
628 | ||
6f2f567f | 629 | Winline |
87c75316 | 630 | Common Var(warn_inline) Warning |
8fb42bbc | 631 | Warn when an inlined function cannot be inlined. |
6f2f567f | 632 | |
1cd6e20d | 633 | Winvalid-memory-model |
634 | Common Var(warn_invalid_memory_model) Init(1) Warning | |
635 | Warn when an atomic memory model parameter is known to be outside the valid range. | |
636 | ||
6f2f567f | 637 | Wlarger-than- |
67089c6b | 638 | Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) |
17c66687 | 639 | |
640 | Wlarger-than= | |
8e18705e | 641 | Common RejectNegative Joined Host_Wide_Int ByteSize Warning Var(warn_larger_than_size) Init(HOST_WIDE_INT_MAX) |
642 | -Wlarger-than=<byte-size> Warn if an object's size exceeds <byte-size>. | |
6f2f567f | 643 | |
7675e968 | 644 | Wnonnull-compare |
645 | Var(warn_nonnull_compare) Warning | |
646 | Warn if comparing pointer parameter with nonnull attribute with NULL. | |
647 | ||
254d68a9 | 648 | Wnull-dereference |
5463f502 | 649 | Common Var(warn_null_dereference) Warning |
8fb42bbc | 650 | Warn if dereferencing a NULL pointer may lead to erroneous or undefined behavior. |
254d68a9 | 651 | |
7e3cc681 | 652 | Wunsafe-loop-optimizations |
b97fffd6 | 653 | Common Ignore Warning |
654 | Does nothing. Preserved for backward compatibility. | |
7e3cc681 | 655 | |
6f2f567f | 656 | Wmissing-noreturn |
7ca909c6 | 657 | Common Warning Alias(Wsuggest-attribute=noreturn) |
6f2f567f | 658 | |
c8902726 | 659 | Wodr |
01cb9cf7 | 660 | Common Var(warn_odr_violations) Init(1) Warning |
8fb42bbc | 661 | Warn about some C++ One Definition Rule violations during link time optimization. |
c8902726 | 662 | |
55972f40 | 663 | Woverflow |
87c75316 | 664 | Common Var(warn_overflow) Init(1) Warning |
8fb42bbc | 665 | Warn about overflow in arithmetic expressions. |
55972f40 | 666 | |
40175f70 | 667 | Wlto-type-mismatch |
668 | Common Var(warn_lto_type_mismatch) Init(1) Warning | |
8fb42bbc | 669 | During link time optimization warn about mismatched types of global declarations. |
40175f70 | 670 | |
6f2f567f | 671 | Wpacked |
87c75316 | 672 | Common Var(warn_packed) Warning |
8fb42bbc | 673 | Warn when the packed attribute has no effect on struct layout. |
6f2f567f | 674 | |
675 | Wpadded | |
87c75316 | 676 | Common Var(warn_padded) Warning |
8fb42bbc | 677 | Warn when padding is required to align structure members. |
6f2f567f | 678 | |
29438999 | 679 | Wpedantic |
04afd878 | 680 | Common Var(pedantic) Init(0) Warning |
8fb42bbc | 681 | Issue warnings needed for strict compliance to the standard. |
29438999 | 682 | |
f22a2cb7 | 683 | Wreturn-local-addr |
684 | Common Var(warn_return_local_addr) Init(1) Warning | |
685 | Warn about returning a pointer/reference to a local or temporary variable. | |
686 | ||
6f2f567f | 687 | Wshadow |
87c75316 | 688 | Common Var(warn_shadow) Warning |
50d3ad71 | 689 | Warn when one variable shadows another. Same as -Wshadow=global. |
690 | ||
691 | Wshadow=global | |
692 | Common Warning Alias(Wshadow) | |
693 | Warn when one variable shadows another (globally). | |
694 | ||
695 | Wshadow=local | |
696 | Common Var(warn_shadow_local) Warning EnabledBy(Wshadow) | |
697 | Warn when one local variable shadows another local variable or parameter. | |
698 | ||
699 | Wshadow-local | |
700 | Common Warning Undocumented Alias(Wshadow=local) | |
701 | ||
702 | Wshadow=compatible-local | |
703 | Common Var(warn_shadow_compatible_local) Warning EnabledBy(Wshadow=local) | |
704 | Warn when one local variable shadows another local variable or parameter of compatible type. | |
705 | ||
706 | Wshadow-compatible-local | |
707 | Common Warning Undocumented Alias(Wshadow=compatible-local) | |
6f2f567f | 708 | |
f1a0edff | 709 | Wstack-protector |
87c75316 | 710 | Common Var(warn_stack_protect) Warning |
8fb42bbc | 711 | Warn when not issuing stack smashing protection for some reason. |
f1a0edff | 712 | |
8c0dd614 | 713 | Wstack-usage= |
8e18705e | 714 | Common Joined RejectNegative Host_Wide_Int ByteSize Var(warn_stack_usage) Warning Init(HOST_WIDE_INT_MAX) |
715 | -Wstack-usage=<byte-size> Warn if stack usage might exceed <byte-size>. | |
8c0dd614 | 716 | |
6f2f567f | 717 | Wstrict-aliasing |
87c75316 | 718 | Common Warning |
8fb42bbc | 719 | Warn about code which might break strict aliasing rules. |
6f2f567f | 720 | |
c1628b55 | 721 | Wstrict-aliasing= |
77b27208 | 722 | Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Warning |
8fb42bbc | 723 | Warn about code which might break strict aliasing rules. |
c1628b55 | 724 | |
add6ee5e | 725 | Wstrict-overflow |
e8831472 | 726 | Common Warning |
8fb42bbc | 727 | Warn about optimizations that assume that signed overflow is undefined. |
add6ee5e | 728 | |
729 | Wstrict-overflow= | |
77b27208 | 730 | Common Joined RejectNegative UInteger Var(warn_strict_overflow) Warning |
8fb42bbc | 731 | Warn about optimizations that assume that signed overflow is undefined. |
add6ee5e | 732 | |
60722a03 | 733 | Wsuggest-attribute=cold |
734 | Common Var(warn_suggest_attribute_cold) Warning | |
735 | Warn about functions which might be candidates for __attribute__((cold)). | |
736 | ||
2c06958d | 737 | Wsuggest-attribute=const |
738 | Common Var(warn_suggest_attribute_const) Warning | |
8fb42bbc | 739 | Warn about functions which might be candidates for __attribute__((const)). |
2c06958d | 740 | |
741 | Wsuggest-attribute=pure | |
742 | Common Var(warn_suggest_attribute_pure) Warning | |
8fb42bbc | 743 | Warn about functions which might be candidates for __attribute__((pure)). |
2c06958d | 744 | |
43d60d64 | 745 | Wsuggest-attribute=noreturn |
746 | Common Var(warn_suggest_attribute_noreturn) Warning | |
8fb42bbc | 747 | Warn about functions which might be candidates for __attribute__((noreturn)). |
43d60d64 | 748 | |
bd5ef087 | 749 | Wsuggest-attribute=malloc |
750 | Common Var(warn_suggest_attribute_malloc) Warning | |
751 | Warn about functions which might be candidates for __attribute__((malloc)). | |
752 | ||
fb6c6e54 | 753 | Wsuggest-final-types |
754 | Common Var(warn_suggest_final_types) Warning | |
8fb42bbc | 755 | Warn about C++ polymorphic types where adding final keyword would improve code quality. |
fb6c6e54 | 756 | |
757 | Wsuggest-final-methods | |
758 | Common Var(warn_suggest_final_methods) Warning | |
8fb42bbc | 759 | Warn about C++ virtual methods where adding final keyword would improve code quality. |
fb6c6e54 | 760 | |
1398da0f | 761 | Wswitch-unreachable |
762 | Common Var(warn_switch_unreachable) Warning Init(1) | |
763 | Warn about statements between switch's controlling expression and the first | |
764 | case. | |
765 | ||
6f2f567f | 766 | Wsystem-headers |
87c75316 | 767 | Common Var(warn_system_headers) Warning |
8fb42bbc | 768 | Do not suppress warnings from system headers. |
6f2f567f | 769 | |
8bc8a8f4 | 770 | Wtrampolines |
771 | Common Var(warn_trampolines) Warning | |
8fb42bbc | 772 | Warn whenever a trampoline is generated. |
8bc8a8f4 | 773 | |
100b67da | 774 | Wtype-limits |
70059cea | 775 | Common Var(warn_type_limits) Warning EnabledBy(Wextra) |
8fb42bbc | 776 | Warn if a comparison is always true or always false due to the limited range of the data type. |
100b67da | 777 | |
6f2f567f | 778 | Wuninitialized |
fbb6fbd8 | 779 | Common Var(warn_uninitialized) Warning EnabledBy(Wextra) |
8fb42bbc | 780 | Warn about uninitialized automatic variables. |
6f2f567f | 781 | |
8c3e8d68 | 782 | Wmaybe-uninitialized |
fbb6fbd8 | 783 | Common Var(warn_maybe_uninitialized) Warning EnabledBy(Wuninitialized) |
8fb42bbc | 784 | Warn about maybe uninitialized automatic variables. |
8c3e8d68 | 785 | |
6f2f567f | 786 | Wunreachable-code |
eec0fa3f | 787 | Common Ignore Warning |
cc029bec | 788 | Does nothing. Preserved for backward compatibility. |
6f2f567f | 789 | |
da3b1bab | 790 | Wunused |
278e3a1f | 791 | Common Var(warn_unused) Init(0) Warning |
8fb42bbc | 792 | Enable all -Wunused- warnings. |
da3b1bab | 793 | |
abc6c64f | 794 | Wunused-but-set-parameter |
1090f26f | 795 | Common Var(warn_unused_but_set_parameter) Warning EnabledBy(Wunused && Wextra) |
8fb42bbc | 796 | Warn when a function parameter is only set, otherwise unused. |
abc6c64f | 797 | |
798 | Wunused-but-set-variable | |
fbb6fbd8 | 799 | Common Var(warn_unused_but_set_variable) Warning EnabledBy(Wunused) |
8fb42bbc | 800 | Warn when a variable is only set, otherwise unused. |
abc6c64f | 801 | |
6f2f567f | 802 | Wunused-function |
fbb6fbd8 | 803 | Common Var(warn_unused_function) Warning EnabledBy(Wunused) |
8fb42bbc | 804 | Warn when a function is unused. |
6f2f567f | 805 | |
806 | Wunused-label | |
fbb6fbd8 | 807 | Common Var(warn_unused_label) Warning EnabledBy(Wunused) |
8fb42bbc | 808 | Warn when a label is unused. |
6f2f567f | 809 | |
810 | Wunused-parameter | |
1090f26f | 811 | Common Var(warn_unused_parameter) Warning EnabledBy(Wunused && Wextra) |
8fb42bbc | 812 | Warn when a function parameter is unused. |
6f2f567f | 813 | |
814 | Wunused-value | |
fbb6fbd8 | 815 | Common Var(warn_unused_value) Warning EnabledBy(Wunused) |
8fb42bbc | 816 | Warn when an expression value is unused. |
6f2f567f | 817 | |
818 | Wunused-variable | |
fbb6fbd8 | 819 | Common Var(warn_unused_variable) Warning EnabledBy(Wunused) |
8fb42bbc | 820 | Warn when a variable is unused. |
6f2f567f | 821 | |
c81ed7c1 | 822 | Wcoverage-mismatch |
21cd990d | 823 | Common Var(warn_coverage_mismatch) Init(1) Warning |
8fb42bbc | 824 | Warn in case profiles in -fprofile-use do not match. |
c81ed7c1 | 825 | |
c5fdd880 | 826 | Wmissing-profile |
827 | Common Var(warn_missing_profile) Init(1) Warning | |
828 | Warn in case profiles in -fprofile-use do not exist. | |
829 | ||
928efcfe | 830 | Wvector-operation-performance |
831 | Common Var(warn_vector_operation_performance) Warning | |
8fb42bbc | 832 | Warn when a vector operation is compiled outside the SIMD. |
928efcfe | 833 | |
e28aa114 | 834 | Xassembler |
835 | Driver Separate | |
836 | ||
837 | Xlinker | |
838 | Driver Separate | |
839 | ||
840 | Xpreprocessor | |
841 | Driver Separate | |
842 | ||
3bfde2af | 843 | Z |
844 | Driver | |
845 | ||
e690b385 | 846 | aux-info |
6bd9d862 | 847 | Common Separate Var(aux_info_file_name) |
8fb42bbc | 848 | -aux-info <file> Emit declaration information into <file>. |
e690b385 | 849 | |
850 | aux-info= | |
67089c6b | 851 | Common Joined Alias(aux-info) |
e690b385 | 852 | |
853 | auxbase | |
6bd9d862 | 854 | Common Separate RejectDriver Var(aux_base_name) |
e690b385 | 855 | |
856 | auxbase-strip | |
e28aa114 | 857 | Common Separate RejectDriver |
858 | ||
5789e05b | 859 | coverage |
860 | Driver | |
861 | ||
e28aa114 | 862 | c |
863 | Driver | |
e690b385 | 864 | |
865 | d | |
866 | Common Joined | |
8fb42bbc | 867 | -d<letters> Enable dumps from specific passes of the compiler. |
e690b385 | 868 | |
869 | dumpbase | |
6bd9d862 | 870 | Common Separate Var(dump_base_name) |
8fb42bbc | 871 | -dumpbase <file> Set the file basename to be used for dumps. |
e690b385 | 872 | |
50ca7c37 | 873 | dumpdir |
6bd9d862 | 874 | Common Separate Var(dump_dir_name) |
8fb42bbc | 875 | -dumpdir <dir> Set the directory name to be used for dumps. |
50ca7c37 | 876 | |
e28aa114 | 877 | dumpmachine |
878 | Driver | |
879 | ||
880 | dumpspecs | |
881 | Driver | |
882 | ||
883 | dumpversion | |
884 | Driver | |
885 | ||
0812bb06 | 886 | dumpfullversion |
887 | Driver | |
888 | ||
5789e05b | 889 | e |
890 | Driver Joined Separate | |
891 | ||
455188e9 | 892 | ; This option has historically been passed down to the linker by an |
893 | ; accident of a %{e*} spec, so ensure it continues to be passed down | |
894 | ; as a single option. The supported option for this purpose is | |
895 | ; -rdynamic. See PR 47390. | |
896 | export-dynamic | |
897 | Driver Undocumented | |
898 | ||
82a16202 | 899 | ; The version of the C++ ABI in use. The following values are allowed: |
900 | ; | |
901 | ; 0: The version of the ABI believed most conformant with the C++ ABI | |
902 | ; specification. This ABI may change as bugs are discovered and fixed. | |
903 | ; Therefore, 0 will not necessarily indicate the same ABI in different | |
904 | ; versions of G++. | |
905 | ; | |
f591db9a | 906 | ; 1: The version of the ABI first used in G++ 3.2. No longer selectable. |
82a16202 | 907 | ; |
1d524ff7 | 908 | ; 2: The version of the ABI first used in G++ 3.4, and the default |
909 | ; until GCC 4.9. | |
29e2e80a | 910 | ; |
911 | ; 3: The version of the ABI that fixes the missing underscore | |
912 | ; in template non-type arguments of pointer type. | |
913 | ; | |
914 | ; 4: The version of the ABI that introduces unambiguous mangling of | |
87d553db | 915 | ; vector types. First selectable in G++ 4.5. |
e9e7c198 | 916 | ; |
4d7aaf8e | 917 | ; 5: The version of the ABI that ignores attribute const/noreturn |
87d553db | 918 | ; in function pointer mangling, and corrects mangling of decltype and |
4d7aaf8e | 919 | ; function parameters used in other parameters and the return type. |
87d553db | 920 | ; First selectable in G++ 4.6. |
4d7aaf8e | 921 | ; |
2d847c18 | 922 | ; 6: The version of the ABI that doesn't promote scoped enums to int and |
923 | ; changes the mangling of template argument packs, const/static_cast, | |
924 | ; prefix ++ and --, and a class scope function used as a template | |
925 | ; argument. | |
72fc0f64 | 926 | ; First selectable in G++ 4.7. |
927 | ; | |
dc78d83a | 928 | ; 7: The version of the ABI that treats nullptr_t as a builtin type and |
929 | ; corrects the mangling of lambdas in default argument scope. | |
fbcdace8 | 930 | ; First selectable in G++ 4.8. |
862e5b6d | 931 | ; |
932 | ; 8: The version of the ABI that corrects the substitution behavior of | |
933 | ; function types with function-cv-qualifiers. | |
399fbdbd | 934 | ; First selectable in G++ 4.9 and default in G++ 5. |
935 | ; | |
42af8c2a | 936 | ; 9: The version of the ABI that corrects the alignment of nullptr_t. |
937 | ; First selectable and default in G++ 5.2. | |
938 | ; | |
939 | ; 10: The version of the ABI that mangles attributes that affect type | |
940 | ; identity, such as ia32 calling convention attributes (stdcall, etc.) | |
941 | ; Default in G++ 6 (set in c_common_post_options). | |
862e5b6d | 942 | ; |
7896267d | 943 | ; 11: The version of the ABI that corrects mangling of sizeof... expressions |
944 | ; and introduces new inheriting constructor handling. | |
17fdf85c | 945 | ; Default in G++ 7. |
946 | ; | |
5d11282b | 947 | ; 12: Corrects the calling convention for classes with only deleted copy/move |
532d84ff | 948 | ; constructors and changes passing/returning of empty records. |
a1dbee61 | 949 | ; Default in G++ 8.1. |
950 | ; | |
951 | ; 13: Fixes the accidental change in 12 to the calling convention for classes | |
952 | ; with deleted copy constructor and trivial move constructor. | |
953 | ; Default in G++ 8.2. | |
5d11282b | 954 | ; |
82a16202 | 955 | ; Additional positive integers will be assigned as new versions of |
956 | ; the ABI become the default version of the ABI. | |
e100aadc | 957 | fabi-version= |
f2c0954e | 958 | Common Joined RejectNegative UInteger Var(flag_abi_version) Init(0) |
8fb42bbc | 959 | The version of the C++ ABI in use. |
e100aadc | 960 | |
56dfa44a | 961 | faggressive-loop-optimizations |
8fb42bbc | 962 | Common Report Var(flag_aggressive_loop_optimizations) Optimization Init(1) |
963 | Aggressively optimize loops using language constraints. | |
56dfa44a | 964 | |
ecdb6d1a | 965 | falign-functions |
6848a0ae | 966 | Common Report Var(flag_align_functions) Optimization |
8fb42bbc | 967 | Align the start of functions. |
ecdb6d1a | 968 | |
941a4893 | 969 | falign-functions= |
6848a0ae | 970 | Common RejectNegative Joined Var(str_align_functions) Optimization |
941a4893 | 971 | |
32cc215b | 972 | flimit-function-alignment |
973 | Common Report Var(flag_limit_function_alignment) Optimization Init(0) | |
974 | ||
ecdb6d1a | 975 | falign-jumps |
6848a0ae | 976 | Common Report Var(flag_align_jumps) Optimization |
8fb42bbc | 977 | Align labels which are only reached by jumping. |
ecdb6d1a | 978 | |
941a4893 | 979 | falign-jumps= |
6848a0ae | 980 | Common RejectNegative Joined Var(str_align_jumps) Optimization |
941a4893 | 981 | |
ecdb6d1a | 982 | falign-labels |
6848a0ae | 983 | Common Report Var(flag_align_labels) Optimization |
8fb42bbc | 984 | Align all labels. |
ecdb6d1a | 985 | |
941a4893 | 986 | falign-labels= |
6848a0ae | 987 | Common RejectNegative Joined Var(str_align_labels) Optimization |
941a4893 | 988 | |
ecdb6d1a | 989 | falign-loops |
6848a0ae | 990 | Common Report Var(flag_align_loops) Optimization |
8fb42bbc | 991 | Align the start of loops. |
ecdb6d1a | 992 | |
941a4893 | 993 | falign-loops= |
371e2a2e | 994 | Common RejectNegative Joined Var(str_align_loops) Optimization |
941a4893 | 995 | |
ecdb6d1a | 996 | fargument-alias |
3b0273a1 | 997 | Common Ignore |
e190b18a | 998 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 999 | |
1000 | fargument-noalias | |
3b0273a1 | 1001 | Common Ignore |
e190b18a | 1002 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 1003 | |
1004 | fargument-noalias-global | |
3b0273a1 | 1005 | Common Ignore |
e190b18a | 1006 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 1007 | |
5ff22aea | 1008 | fargument-noalias-anything |
3b0273a1 | 1009 | Common Ignore |
e190b18a | 1010 | Does nothing. Preserved for backward compatibility. |
5ff22aea | 1011 | |
9e46467d | 1012 | fsanitize= |
1013 | Common Driver Report Joined | |
8fb42bbc | 1014 | Select what to sanitize. |
b077695d | 1015 | |
ccec7674 | 1016 | fsanitize-coverage= |
1017 | Common Report Joined | |
dc4ed9fd | 1018 | Select type of coverage sanitization. |
ccec7674 | 1019 | |
cf357977 | 1020 | fasan-shadow-offset= |
1021 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1022 | -fasan-shadow-offset=<number> Use custom shadow memory offset. | |
1023 | ||
4d3c996b | 1024 | fsanitize-sections= |
1025 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1026 | -fsanitize-sections=<sec1,sec2,...> Sanitize global variables | |
1027 | in user-defined sections. | |
1028 | ||
c2598081 | 1029 | fsanitize-recover= |
1030 | Common Report Joined | |
8fb42bbc | 1031 | After diagnosing undefined behavior attempt to continue execution. |
7311d7c1 | 1032 | |
c2598081 | 1033 | fsanitize-recover |
1034 | Common Report | |
8fb42bbc | 1035 | This switch is deprecated; use -fsanitize-recover= instead. |
c2598081 | 1036 | |
629b6abc | 1037 | fsanitize-address-use-after-scope |
1038 | Common Driver Report Var(flag_sanitize_address_use_after_scope) Init(0) | |
1039 | ||
7311d7c1 | 1040 | fsanitize-undefined-trap-on-error |
d21bbc3f | 1041 | Common Driver Report Var(flag_sanitize_undefined_trap_on_error) Init(0) |
8fb42bbc | 1042 | Use trap instead of a library function for undefined behavior sanitization. |
7311d7c1 | 1043 | |
ecdb6d1a | 1044 | fasynchronous-unwind-tables |
87c75316 | 1045 | Common Report Var(flag_asynchronous_unwind_tables) Optimization |
8fb42bbc | 1046 | Generate unwind tables that are exact at each instruction boundary. |
ecdb6d1a | 1047 | |
3072d30e | 1048 | fauto-inc-dec |
bfedbed1 | 1049 | Common Report Var(flag_auto_inc_dec) Init(1) Optimization |
8fb42bbc | 1050 | Generate auto-inc/dec instructions. |
3072d30e | 1051 | |
94bed7c3 | 1052 | fauto-profile |
bfedbed1 | 1053 | Common Report Var(flag_auto_profile) |
94bed7c3 | 1054 | Use sample profile information for call graph node weights. The default |
1055 | profile file is fbdata.afdo in 'pwd'. | |
1056 | ||
1057 | fauto-profile= | |
1058 | Common Joined RejectNegative Var(auto_profile_file) | |
1059 | Use sample profile information for call graph node weights. The profile | |
1060 | file is specified in the argument. | |
1061 | ||
82a16202 | 1062 | ; -fcheck-bounds causes gcc to generate array bounds checks. |
1063 | ; For C, C++ and ObjC: defaults off. | |
1064 | ; For Java: defaults to on. | |
1065 | ; For Fortran: defaults to off. | |
ecdb6d1a | 1066 | fbounds-check |
2e9da478 | 1067 | Common Report Var(flag_bounds_check) |
8fb42bbc | 1068 | Generate code to check bounds before indexing arrays. |
ecdb6d1a | 1069 | |
1070 | fbranch-count-reg | |
1941e89d | 1071 | Common Report Var(flag_branch_on_count_reg) Optimization |
8fb42bbc | 1072 | Replace add, compare, branch with branch on count register. |
ecdb6d1a | 1073 | |
1074 | fbranch-probabilities | |
87c75316 | 1075 | Common Report Var(flag_branch_probabilities) Optimization |
8fb42bbc | 1076 | Use profiling information for branch probabilities. |
ecdb6d1a | 1077 | |
1e06725a | 1078 | fbranch-target-load-optimize |
87c75316 | 1079 | Common Report Var(flag_branch_target_load_optimize) Optimization |
8fb42bbc | 1080 | Perform branch target load optimization before prologue / epilogue threading. |
1e06725a | 1081 | |
1082 | fbranch-target-load-optimize2 | |
87c75316 | 1083 | Common Report Var(flag_branch_target_load_optimize2) Optimization |
8fb42bbc | 1084 | Perform branch target load optimization after prologue / epilogue threading. |
1e06725a | 1085 | |
08d163a9 | 1086 | fbtr-bb-exclusive |
87c75316 | 1087 | Common Report Var(flag_btr_bb_exclusive) Optimization |
8fb42bbc | 1088 | Restrict target load migration not to re-use registers in any basic block. |
08d163a9 | 1089 | |
941a4893 | 1090 | fcall-saved- |
f0da0668 | 1091 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1092 | -fcall-saved-<register> Mark <register> as being preserved across functions. |
941a4893 | 1093 | |
1094 | fcall-used- | |
f0da0668 | 1095 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1096 | -fcall-used-<register> Mark <register> as being corrupted by function calls. |
941a4893 | 1097 | |
82a16202 | 1098 | ; Nonzero for -fcaller-saves: allocate values in regs that need to |
1099 | ; be saved across function calls, if that produces overall better code. | |
1100 | ; Optional now, so people can test it. | |
1e06725a | 1101 | fcaller-saves |
87c75316 | 1102 | Common Report Var(flag_caller_saves) Optimization |
8fb42bbc | 1103 | Save registers around function calls. |
1e06725a | 1104 | |
355572cc | 1105 | fcheck-data-deps |
0c46a085 | 1106 | Common Ignore |
0d8001a7 | 1107 | This switch is deprecated; do not use. |
355572cc | 1108 | |
0b7282f1 | 1109 | fcheck-new |
1110 | Common Var(flag_check_new) | |
8fb42bbc | 1111 | Check the return value of new in C++. |
0b7282f1 | 1112 | |
92deda7a | 1113 | fchecking |
9ccb8d8d | 1114 | Common Var(flag_checking) Init(CHECKING_P ? ENABLE_EXTRA_CHECKING ? 2 : 1 : 0) |
92deda7a | 1115 | Perform internal consistency checkings. |
1116 | ||
c05979a1 | 1117 | fchecking= |
1118 | Common Joined RejectNegative UInteger Var(flag_checking) | |
1119 | Perform internal consistency checkings. | |
1120 | ||
ad010d47 | 1121 | fcode-hoisting |
1122 | Common Report Var(flag_code_hoisting) Optimization | |
1123 | Enable code hoisting. | |
1124 | ||
bbb0a662 | 1125 | fcombine-stack-adjustments |
1126 | Common Report Var(flag_combine_stack_adjustments) Optimization | |
1127 | Looks for opportunities to reduce stack adjustments and stack references. | |
1128 | ||
ecdb6d1a | 1129 | fcommon |
bfedbed1 | 1130 | Common Report Var(flag_no_common,0) |
8fb42bbc | 1131 | Do not put uninitialized globals in the common section. |
ecdb6d1a | 1132 | |
e28aa114 | 1133 | fcompare-debug |
1134 | Driver | |
1135 | ; Converted by the driver to -fcompare-debug= options. | |
1136 | ||
71278019 | 1137 | fcompare-debug= |
e28aa114 | 1138 | Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) |
8fb42bbc | 1139 | -fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump. |
71278019 | 1140 | |
1141 | fcompare-debug-second | |
ab3728ee | 1142 | Common Driver RejectNegative Var(flag_compare_debug) |
8fb42bbc | 1143 | Run only the second compilation of -fcompare-debug. |
71278019 | 1144 | |
a50372fe | 1145 | fcompare-elim |
1146 | Common Report Var(flag_compare_elim_after_reload) Optimization | |
8fb42bbc | 1147 | Perform comparison elimination after register allocation has finished. |
a50372fe | 1148 | |
9845d120 | 1149 | fconserve-stack |
1150 | Common Var(flag_conserve_stack) Optimization | |
8fb42bbc | 1151 | Do not perform optimizations increasing noticeably stack usage. |
9845d120 | 1152 | |
ecdb6d1a | 1153 | fcprop-registers |
87c75316 | 1154 | Common Report Var(flag_cprop_registers) Optimization |
8fb42bbc | 1155 | Perform a register copy-propagation optimization pass. |
ecdb6d1a | 1156 | |
1e06725a | 1157 | fcrossjumping |
87c75316 | 1158 | Common Report Var(flag_crossjumping) Optimization |
8fb42bbc | 1159 | Perform cross-jumping optimization. |
1e06725a | 1160 | |
1161 | fcse-follow-jumps | |
87c75316 | 1162 | Common Report Var(flag_cse_follow_jumps) Optimization |
8fb42bbc | 1163 | When running CSE, follow jumps to their targets. |
1e06725a | 1164 | |
1165 | fcse-skip-blocks | |
3b0273a1 | 1166 | Common Ignore |
d743aba2 | 1167 | Does nothing. Preserved for backward compatibility. |
1e06725a | 1168 | |
45b9d334 | 1169 | fcx-limited-range |
ecee1b29 | 1170 | Common Report Var(flag_cx_limited_range) Optimization SetByCombined |
8fb42bbc | 1171 | Omit range reduction step when performing complex division. |
45b9d334 | 1172 | |
608256a0 | 1173 | fcx-fortran-rules |
1174 | Common Report Var(flag_cx_fortran_rules) Optimization | |
8fb42bbc | 1175 | Complex multiplication and division follow Fortran rules. |
608256a0 | 1176 | |
ecdb6d1a | 1177 | fdata-sections |
bfedbed1 | 1178 | Common Report Var(flag_data_sections) |
8fb42bbc | 1179 | Place data items into their own section. |
ecdb6d1a | 1180 | |
d2153a46 | 1181 | fdbg-cnt-list |
9faf44d6 | 1182 | Common Report Var(common_deferred_options) Defer |
d2153a46 | 1183 | List all available debugging counters with their limits and counts. |
1184 | ||
3072d30e | 1185 | fdbg-cnt= |
9faf44d6 | 1186 | Common RejectNegative Joined Var(common_deferred_options) Defer |
795785e1 | 1187 | -fdbg-cnt=<counter>[:<lower_limit>]:<upper_limit>[,<counter>:...] Set the debug counter limit. |
3072d30e | 1188 | |
5f1f2de5 | 1189 | fdebug-prefix-map= |
9faf44d6 | 1190 | Common Joined RejectNegative Var(common_deferred_options) Defer |
859b51f8 | 1191 | -fdebug-prefix-map=<old>=<new> Map one directory name to another in debug information. |
1192 | ||
1193 | ffile-prefix-map= | |
1194 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1195 | -ffile-prefix-map=<old>=<new> Map one directory name to another in compilation result. | |
5f1f2de5 | 1196 | |
240a87ff | 1197 | fdebug-types-section |
052166fd | 1198 | Common Report Var(flag_debug_types_section) Init(0) |
240a87ff | 1199 | Output .debug_types section when using DWARF v4 debuginfo. |
1200 | ||
82a16202 | 1201 | ; Nonzero for -fdefer-pop: don't pop args after each function call |
1202 | ; instead save them up to pop many calls' args with one insns. | |
1e06725a | 1203 | fdefer-pop |
87c75316 | 1204 | Common Report Var(flag_defer_pop) Optimization |
8fb42bbc | 1205 | Defer popping functions args from stack until later. |
1e06725a | 1206 | |
1207 | fdelayed-branch | |
87c75316 | 1208 | Common Report Var(flag_delayed_branch) Optimization |
8fb42bbc | 1209 | Attempt to fill delay slots of branch instructions. |
1e06725a | 1210 | |
bc0dfc8d | 1211 | fdelete-dead-exceptions |
bfedbed1 | 1212 | Common Report Var(flag_delete_dead_exceptions) Init(0) Optimization |
8fb42bbc | 1213 | Delete dead instructions that may throw exceptions. |
bc0dfc8d | 1214 | |
1e06725a | 1215 | fdelete-null-pointer-checks |
2d66501e | 1216 | Common Report Var(flag_delete_null_pointer_checks) Init(-1) Optimization |
8fb42bbc | 1217 | Delete useless null pointer checks. |
1e06725a | 1218 | |
a8aa8251 | 1219 | fdevirtualize-at-ltrans |
1220 | Common Report Var(flag_ltrans_devirtualize) | |
8fb42bbc | 1221 | Stream extra data to support more aggressive devirtualization in LTO local transformation mode. |
a8aa8251 | 1222 | |
84f6cc40 | 1223 | fdevirtualize-speculatively |
1224 | Common Report Var(flag_devirtualize_speculatively) Optimization | |
8fb42bbc | 1225 | Perform speculative devirtualization. |
84f6cc40 | 1226 | |
0276be0c | 1227 | fdevirtualize |
1228 | Common Report Var(flag_devirtualize) Optimization | |
1229 | Try to convert virtual calls to direct ones. | |
1230 | ||
1e06725a | 1231 | fdiagnostics-show-location= |
d62a5950 | 1232 | Common Joined RejectNegative Enum(diagnostic_prefixing_rule) |
8fb42bbc | 1233 | -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics. |
1e06725a | 1234 | |
d62a5950 | 1235 | ; Required for these enum values. |
1236 | SourceInclude | |
1237 | pretty-print.h | |
1238 | ||
1239 | Enum | |
1240 | Name(diagnostic_prefixing_rule) Type(int) | |
1241 | ||
1242 | EnumValue | |
1243 | Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) | |
1244 | ||
1245 | EnumValue | |
1246 | Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) | |
1247 | ||
5a983084 | 1248 | fdiagnostics-show-caret |
1249 | Common Var(flag_diagnostics_show_caret) Init(1) | |
8fb42bbc | 1250 | Show the source line with a caret indicating the column. |
5a983084 | 1251 | |
b7bb5264 | 1252 | fdiagnostics-show-labels |
1253 | Common Var(flag_diagnostics_show_labels) Init(1) | |
f673492c | 1254 | Show labels annotating ranges of source code when showing source. |
b7bb5264 | 1255 | |
ff7410b8 | 1256 | fdiagnostics-show-line-numbers |
1257 | Common Var(flag_diagnostics_show_line_numbers) Init(1) | |
f673492c | 1258 | Show line numbers in the left margin when showing source. |
ff7410b8 | 1259 | |
41609f8b | 1260 | fdiagnostics-color |
1261 | Common Alias(fdiagnostics-color=,always,never) | |
1262 | ; | |
1263 | ||
1264 | fdiagnostics-color= | |
9b11544d | 1265 | Driver Common Joined RejectNegative Var(flag_diagnostics_show_color) Enum(diagnostic_color_rule) Init(DIAGNOSTICS_COLOR_NO) |
8fb42bbc | 1266 | -fdiagnostics-color=[never|always|auto] Colorize diagnostics. |
41609f8b | 1267 | |
1268 | ; Required for these enum values. | |
1269 | SourceInclude | |
1270 | diagnostic-color.h | |
1271 | ||
1272 | Enum | |
1273 | Name(diagnostic_color_rule) Type(int) | |
1274 | ||
1275 | EnumValue | |
1276 | Enum(diagnostic_color_rule) String(never) Value(DIAGNOSTICS_COLOR_NO) | |
1277 | ||
1278 | EnumValue | |
1279 | Enum(diagnostic_color_rule) String(always) Value(DIAGNOSTICS_COLOR_YES) | |
1280 | ||
1281 | EnumValue | |
1282 | Enum(diagnostic_color_rule) String(auto) Value(DIAGNOSTICS_COLOR_AUTO) | |
1283 | ||
1bcc5c64 | 1284 | fdiagnostics-format= |
1285 | Common Joined RejectNegative Enum(diagnostics_output_format) | |
f673492c | 1286 | -fdiagnostics-format=[text|json] Select output format. |
1bcc5c64 | 1287 | |
1288 | ; Required for these enum values. | |
1289 | SourceInclude | |
1290 | diagnostic.h | |
1291 | ||
1292 | Enum | |
1293 | Name(diagnostics_output_format) Type(int) | |
1294 | ||
1295 | EnumValue | |
1296 | Enum(diagnostics_output_format) String(text) Value(DIAGNOSTICS_OUTPUT_FORMAT_TEXT) | |
1297 | ||
1298 | EnumValue | |
1299 | Enum(diagnostics_output_format) String(json) Value(DIAGNOSTICS_OUTPUT_FORMAT_JSON) | |
1300 | ||
6628b04d | 1301 | fdiagnostics-parseable-fixits |
1302 | Common Var(flag_diagnostics_parseable_fixits) | |
d00ce6b9 | 1303 | Print fix-it hints in machine-readable form. |
6628b04d | 1304 | |
40a431fa | 1305 | fdiagnostics-generate-patch |
1306 | Common Var(flag_diagnostics_generate_patch) | |
1307 | Print fix-it hints to stderr in unified diff format. | |
1308 | ||
efb9d9ee | 1309 | fdiagnostics-show-option |
3fee9a69 | 1310 | Common Var(flag_diagnostics_show_option) Init(1) |
8fb42bbc | 1311 | Amend appropriate diagnostic messages with the command line option that controls them. |
efb9d9ee | 1312 | |
31087b7e | 1313 | fdiagnostics-minimum-margin-width= |
1314 | Common Joined UInteger Var(diagnostics_minimum_margin_width) Init(6) | |
f673492c | 1315 | Set minimum width of left margin of source code when showing source. |
31087b7e | 1316 | |
c3087ce0 | 1317 | fdisable- |
1318 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
8fb42bbc | 1319 | -fdisable-[tree|rtl|ipa]-<pass>=range1+range2 disables an optimization pass. |
c3087ce0 | 1320 | |
1321 | fenable- | |
1322 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
8fb42bbc | 1323 | -fenable-[tree|rtl|ipa]-<pass>=range1+range2 enables an optimization pass. |
c3087ce0 | 1324 | |
4ee9c684 | 1325 | fdump- |
f0da0668 | 1326 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1327 | -fdump-<type> Dump various compiler internals to a file. |
4ee9c684 | 1328 | |
0b1d266f | 1329 | fdump-final-insns |
1330 | Driver RejectNegative | |
1331 | ||
71278019 | 1332 | fdump-final-insns= |
1333 | Common RejectNegative Joined Var(flag_dump_final_insns) | |
8fb42bbc | 1334 | -fdump-final-insns=filename Dump to filename the insns at the end of translation. |
71278019 | 1335 | |
929d2a90 | 1336 | fdump-go-spec= |
1337 | Common RejectNegative Joined Var(flag_dump_go_spec) | |
8fb42bbc | 1338 | -fdump-go-spec=filename Write all declarations to file as Go code. |
929d2a90 | 1339 | |
969239ad | 1340 | fdump-noaddr |
1341 | Common Report Var(flag_dump_noaddr) | |
8fb42bbc | 1342 | Suppress output of addresses in debugging dumps. |
969239ad | 1343 | |
a31e9496 | 1344 | freport-bug |
1345 | Common Driver Var(flag_report_bug) | |
1346 | Collect and dump debug information into temporary file if ICE in C/C++ | |
d0abd9e0 | 1347 | compiler occurred. |
a31e9496 | 1348 | |
28f17529 | 1349 | fdump-internal-locations |
1350 | Common Var(flag_dump_locations) Init(0) | |
8fb42bbc | 1351 | Dump detailed information on GCC's internal representation of source code locations. |
28f17529 | 1352 | |
ec4791a8 | 1353 | fdump-passes |
1354 | Common Var(flag_dump_passes) Init(0) | |
8fb42bbc | 1355 | Dump optimization passes. |
ec4791a8 | 1356 | |
ecdb6d1a | 1357 | fdump-unnumbered |
0f8defe5 | 1358 | Common Report Var(flag_dump_unnumbered) |
8fb42bbc | 1359 | Suppress output of instruction numbers, line number notes and addresses in debugging dumps. |
ecdb6d1a | 1360 | |
0a59e439 | 1361 | fdump-unnumbered-links |
0f8defe5 | 1362 | Common Report Var(flag_dump_unnumbered_links) |
8fb42bbc | 1363 | Suppress output of previous and next insn numbers in debugging dumps. |
0a59e439 | 1364 | |
9845d120 | 1365 | fdwarf2-cfi-asm |
1366 | Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE) | |
1367 | Enable CFI tables via GAS assembler directives. | |
1368 | ||
f1aa280c | 1369 | fearly-inlining |
87c75316 | 1370 | Common Report Var(flag_early_inlining) Init(1) Optimization |
8fb42bbc | 1371 | Perform early inlining. |
f1aa280c | 1372 | |
1e06725a | 1373 | feliminate-dwarf2-dups |
1734e8a0 | 1374 | Common Ignore |
1375 | Does nothing. Preserved for backward compatibility. | |
1e06725a | 1376 | |
2f29eac3 | 1377 | fipa-sra |
1378 | Common Report Var(flag_ipa_sra) Init(0) Optimization | |
8fb42bbc | 1379 | Perform interprocedural reduction of aggregates. |
2f29eac3 | 1380 | |
262444a6 | 1381 | feliminate-unused-debug-symbols |
a9df7772 | 1382 | Common Report Var(flag_debug_only_used_symbols) Init(1) |
8fb42bbc | 1383 | Perform unused symbol elimination in debug info. |
262444a6 | 1384 | |
1e06725a | 1385 | feliminate-unused-debug-types |
2e9da478 | 1386 | Common Report Var(flag_eliminate_unused_debug_types) Init(1) |
8fb42bbc | 1387 | Perform unused type elimination in debug info. |
1e06725a | 1388 | |
0c573f98 | 1389 | femit-class-debug-always |
fd5e1dfe | 1390 | Common Report Var(flag_emit_class_debug_always) Init(0) |
0c573f98 | 1391 | Do not suppress C++ class debug information. |
1392 | ||
ecdb6d1a | 1393 | fexceptions |
87c75316 | 1394 | Common Report Var(flag_exceptions) Optimization |
8fb42bbc | 1395 | Enable exception handling. |
ecdb6d1a | 1396 | |
1e06725a | 1397 | fexpensive-optimizations |
87c75316 | 1398 | Common Report Var(flag_expensive_optimizations) Optimization |
8fb42bbc | 1399 | Perform a number of minor, expensive optimizations. |
1e06725a | 1400 | |
c6418a4e | 1401 | fexcess-precision= |
9660cb79 | 1402 | Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) SetByCombined |
8fb42bbc | 1403 | -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision. |
c6418a4e | 1404 | |
d62a5950 | 1405 | Enum |
1406 | Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) | |
1407 | ||
1408 | EnumValue | |
1409 | Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) | |
1410 | ||
1411 | EnumValue | |
1412 | Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) | |
1413 | ||
a998ac00 | 1414 | ; Whether we permit the extended set of values for FLT_EVAL_METHOD |
1415 | ; introduced in ISO/IEC TS 18661-3, or limit ourselves to those in C99/C11. | |
1416 | fpermitted-flt-eval-methods= | |
1417 | Common Joined RejectNegative Enum(permitted_flt_eval_methods) Var(flag_permitted_flt_eval_methods) Init(PERMITTED_FLT_EVAL_METHODS_DEFAULT) | |
1418 | -fpermitted-flt-eval-methods=[c11|ts-18661] Specify which values of FLT_EVAL_METHOD are permitted. | |
1419 | ||
1420 | Enum | |
1421 | Name(permitted_flt_eval_methods) Type(enum permitted_flt_eval_methods) UnknownError(unknown specification for the set of FLT_EVAL_METHOD values to permit %qs) | |
1422 | ||
1423 | EnumValue | |
1424 | Enum(permitted_flt_eval_methods) String(c11) Value(PERMITTED_FLT_EVAL_METHODS_C11) | |
1425 | ||
1426 | EnumValue | |
1427 | Enum(permitted_flt_eval_methods) String(ts-18661-3) Value(PERMITTED_FLT_EVAL_METHODS_TS_18661) | |
1428 | ||
941a4893 | 1429 | ffast-math |
b032c4dd | 1430 | Common Optimization |
941a4893 | 1431 | |
b33542ab | 1432 | ffat-lto-objects |
76eca1df | 1433 | Common Var(flag_fat_lto_objects) |
b33542ab | 1434 | Output lto objects containing both the intermediate language and binary output. |
1435 | ||
ecdb6d1a | 1436 | ffinite-math-only |
ecee1b29 | 1437 | Common Report Var(flag_finite_math_only) Optimization SetByCombined |
8fb42bbc | 1438 | Assume no NaNs or infinities are generated. |
ecdb6d1a | 1439 | |
3984c5cd | 1440 | ffinite-loops |
1441 | Common Report Var(flag_finite_loops) Optimization | |
1442 | Assume that loops with an exit will terminate and not loop indefinitely. | |
1443 | ||
941a4893 | 1444 | ffixed- |
f0da0668 | 1445 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1446 | -ffixed-<register> Mark <register> as being unavailable to the compiler. |
941a4893 | 1447 | |
1e06725a | 1448 | ffloat-store |
87c75316 | 1449 | Common Report Var(flag_float_store) Optimization |
8fb42bbc | 1450 | Don't allocate floats and doubles in extended-precision registers. |
1e06725a | 1451 | |
1452 | fforce-addr | |
3b0273a1 | 1453 | Common Ignore |
4d25f9eb | 1454 | Does nothing. Preserved for backward compatibility. |
1e06725a | 1455 | |
55d51835 | 1456 | fforward-propagate |
1457 | Common Report Var(flag_forward_propagate) Optimization | |
8fb42bbc | 1458 | Perform a forward propagation pass on RTL. |
42a3a38b | 1459 | |
b9be572e | 1460 | ffp-contract= |
b92389a6 | 1461 | Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) Optimization |
6ac368bb | 1462 | -ffp-contract=[off|on|fast] Perform floating-point expression contraction. |
b9be572e | 1463 | |
d62a5950 | 1464 | Enum |
1465 | Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) | |
1466 | ||
1467 | EnumValue | |
1468 | Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) | |
1469 | ||
1470 | ; Not implemented, fall back to conservative FP_CONTRACT_OFF. | |
1471 | EnumValue | |
1472 | Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) | |
1473 | ||
1474 | EnumValue | |
1475 | Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) | |
1476 | ||
20702ea3 | 1477 | ffp-int-builtin-inexact |
1478 | Common Report Var(flag_fp_int_builtin_inexact) Init(1) Optimization | |
1479 | Allow built-in functions ceil, floor, round, trunc to raise \"inexact\" exceptions. | |
1480 | ||
82a16202 | 1481 | ; Nonzero means don't put addresses of constant functions in registers. |
1482 | ; Used for compiling the Unix kernel, where strange substitutions are | |
1483 | ; done on the assembly output. | |
1e06725a | 1484 | ffunction-cse |
bfedbed1 | 1485 | Common Report Var(flag_no_function_cse,0) Optimization |
8fb42bbc | 1486 | Allow function addresses to be held in registers. |
1e06725a | 1487 | |
ecdb6d1a | 1488 | ffunction-sections |
2e9da478 | 1489 | Common Report Var(flag_function_sections) |
8fb42bbc | 1490 | Place each function into its own section. |
ecdb6d1a | 1491 | |
1e06725a | 1492 | fgcse |
87c75316 | 1493 | Common Report Var(flag_gcse) Optimization |
8fb42bbc | 1494 | Perform global common subexpression elimination. |
1e06725a | 1495 | |
1496 | fgcse-lm | |
87c75316 | 1497 | Common Report Var(flag_gcse_lm) Init(1) Optimization |
8fb42bbc | 1498 | Perform enhanced load motion during global common subexpression elimination. |
1e06725a | 1499 | |
1500 | fgcse-sm | |
87c75316 | 1501 | Common Report Var(flag_gcse_sm) Init(0) Optimization |
8fb42bbc | 1502 | Perform store motion after global common subexpression elimination. |
1e06725a | 1503 | |
5c47e414 | 1504 | fgcse-las |
87c75316 | 1505 | Common Report Var(flag_gcse_las) Init(0) Optimization |
839f8415 | 1506 | Perform redundant load after store elimination in global common subexpression |
8fb42bbc | 1507 | elimination. |
839f8415 | 1508 | |
1509 | fgcse-after-reload | |
87c75316 | 1510 | Common Report Var(flag_gcse_after_reload) Optimization |
8fb42bbc | 1511 | Perform global common subexpression elimination after register allocation has |
1512 | finished. | |
5c47e414 | 1513 | |
f78f10d6 | 1514 | Enum |
1515 | Name(dwarf_gnat_encodings) Type(int) | |
1516 | ||
1517 | EnumValue | |
1518 | Enum(dwarf_gnat_encodings) String(all) Value(DWARF_GNAT_ENCODINGS_ALL) | |
1519 | ||
1520 | EnumValue | |
1521 | Enum(dwarf_gnat_encodings) String(gdb) Value(DWARF_GNAT_ENCODINGS_GDB) | |
1522 | ||
1523 | EnumValue | |
1524 | Enum(dwarf_gnat_encodings) String(minimal) Value(DWARF_GNAT_ENCODINGS_MINIMAL) | |
1525 | ||
1526 | fgnat-encodings= | |
1527 | Common Enum(dwarf_gnat_encodings) Joined RejectNegative Report Undocumented Var(gnat_encodings) | |
f673492c | 1528 | -fgnat-encodings=[all|gdb|minimal] Select the balance between GNAT encodings and standard DWARF emitted in the debug information. |
f78f10d6 | 1529 | |
d3399492 | 1530 | ; This option is not documented yet as its semantics will change. |
255b6be7 | 1531 | fgraphite |
f36e946d | 1532 | Common Report Var(flag_graphite) Optimization |
8fb42bbc | 1533 | Enable in and out of Graphite representation. |
255b6be7 | 1534 | |
26c166eb | 1535 | fgraphite-identity |
1536 | Common Report Var(flag_graphite_identity) Optimization | |
8fb42bbc | 1537 | Enable Graphite Identity transformation. |
26c166eb | 1538 | |
239e9670 | 1539 | fhoist-adjacent-loads |
1540 | Common Report Var(flag_hoist_adjacent_loads) Optimization | |
1541 | Enable hoisting adjacent loads to encourage generating conditional move | |
8fb42bbc | 1542 | instructions. |
239e9670 | 1543 | |
5068be18 | 1544 | fkeep-gc-roots-live |
1545 | Common Undocumented Report Var(flag_keep_gc_roots_live) Optimization | |
1546 | ; Always keep a pointer to a live memory block | |
1547 | ||
16848556 | 1548 | floop-parallelize-all |
1549 | Common Report Var(flag_loop_parallelize_all) Optimization | |
8fb42bbc | 1550 | Mark all loops as parallel. |
26c166eb | 1551 | |
255b6be7 | 1552 | floop-strip-mine |
4cc0f4e2 | 1553 | Common Alias(floop-nest-optimize) |
8fb42bbc | 1554 | Enable loop nest transforms. Same as -floop-nest-optimize. |
255b6be7 | 1555 | |
1556 | floop-interchange | |
5051abaf | 1557 | Common Report Var(flag_loop_interchange) Optimization |
1558 | Enable loop interchange on trees. | |
255b6be7 | 1559 | |
1560 | floop-block | |
4cc0f4e2 | 1561 | Common Alias(floop-nest-optimize) |
8fb42bbc | 1562 | Enable loop nest transforms. Same as -floop-nest-optimize. |
255b6be7 | 1563 | |
120092dd | 1564 | floop-unroll-and-jam |
83d3a417 | 1565 | Common Report Var(flag_unroll_jam) Optimization |
1566 | Perform unroll-and-jam on loops. | |
8fb42bbc | 1567 | |
4c0315d0 | 1568 | fgnu-tm |
1569 | Common Report Var(flag_tm) | |
8fb42bbc | 1570 | Enable support for GNU transactional memory. |
4c0315d0 | 1571 | |
6d5d95d6 | 1572 | fgnu-unique |
1573 | Common Report Var(flag_gnu_unique) Init(1) | |
8fb42bbc | 1574 | Use STB_GNU_UNIQUE if supported by the assembler. |
6d5d95d6 | 1575 | |
d60a90cc | 1576 | floop-flatten |
d094f1d6 | 1577 | Common Ignore |
1578 | Does nothing. Preserved for backward compatibility. | |
d60a90cc | 1579 | |
89049f25 | 1580 | floop-nest-optimize |
b3de8ca0 | 1581 | Common Report Var(flag_loop_nest_optimize) Optimization |
71130ef8 | 1582 | Enable the loop nest optimizer. |
89049f25 | 1583 | |
a420d927 | 1584 | fstrict-volatile-bitfields |
bfedbed1 | 1585 | Common Report Var(flag_strict_volatile_bitfields) Init(-1) Optimization |
8fb42bbc | 1586 | Force bitfield accesses to match their type width. |
a420d927 | 1587 | |
3d3e04ac | 1588 | fstore-merging |
1589 | Common Report Var(flag_store_merging) Optimization | |
1590 | Merge adjacent stores. | |
1591 | ||
ecdb6d1a | 1592 | fguess-branch-probability |
87c75316 | 1593 | Common Report Var(flag_guess_branch_prob) Optimization |
8fb42bbc | 1594 | Enable guessing of branch probabilities. |
ecdb6d1a | 1595 | |
82a16202 | 1596 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
1597 | ; Generate position-independent code for executables if possible | |
1598 | ; On SVR4 targets, it also controls whether or not to emit a | |
1599 | ; string identifying the compiler. | |
ecdb6d1a | 1600 | fident |
2e9da478 | 1601 | Common Report Var(flag_no_ident,0) |
8fb42bbc | 1602 | Process #ident directives. |
ecdb6d1a | 1603 | |
1e06725a | 1604 | fif-conversion |
87c75316 | 1605 | Common Report Var(flag_if_conversion) Optimization |
8fb42bbc | 1606 | Perform conversion of conditional jumps to branchless equivalents. |
1e06725a | 1607 | |
1608 | fif-conversion2 | |
87c75316 | 1609 | Common Report Var(flag_if_conversion2) Optimization |
8fb42bbc | 1610 | Perform conversion of conditional jumps to conditional execution. |
1e06725a | 1611 | |
5680e508 | 1612 | fstack-reuse= |
e137219a | 1613 | Common Joined RejectNegative Enum(stack_reuse_level) Var(flag_stack_reuse) Init(SR_ALL) Optimization |
6ac368bb | 1614 | -fstack-reuse=[all|named_vars|none] Set stack reuse level for local variables. |
5680e508 | 1615 | |
1616 | Enum | |
1617 | Name(stack_reuse_level) Type(enum stack_reuse_level) UnknownError(unknown Stack Reuse Level %qs) | |
1618 | ||
1619 | EnumValue | |
1620 | Enum(stack_reuse_level) String(all) Value(SR_ALL) | |
1621 | ||
1622 | EnumValue | |
1623 | Enum(stack_reuse_level) String(named_vars) Value(SR_NAMED_VARS) | |
1624 | ||
1625 | EnumValue | |
1626 | Enum(stack_reuse_level) String(none) Value(SR_NONE) | |
1627 | ||
0cb1935d | 1628 | ftree-loop-if-convert |
1629 | Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization | |
8fb42bbc | 1630 | Convert conditional jumps in innermost loops to branchless equivalents. |
0cb1935d | 1631 | |
3b91ccd9 | 1632 | ftree-loop-if-convert-stores |
b6f4c9b5 | 1633 | Common Ignore |
1634 | Does nothing. Preserved for backward compatibility. | |
3b91ccd9 | 1635 | |
82a16202 | 1636 | ; -finhibit-size-directive inhibits output of .size for ELF. |
1637 | ; This is used only for compiling crtstuff.c, | |
1638 | ; and it may be extended to other effects | |
1639 | ; needed for crtstuff.c on other systems. | |
ecdb6d1a | 1640 | finhibit-size-directive |
2e9da478 | 1641 | Common Report Var(flag_inhibit_size_directive) |
8fb42bbc | 1642 | Do not generate .size directives. |
ecdb6d1a | 1643 | |
f8daee9b | 1644 | findirect-inlining |
d1f68cd8 | 1645 | Common Report Var(flag_indirect_inlining) Optimization |
8fb42bbc | 1646 | Perform indirect inlining. |
f8daee9b | 1647 | |
b75cad1f | 1648 | ; General flag to enable inlining. Specifying -fno-inline will disable |
1649 | ; all inlining apart from always-inline functions. | |
1e06725a | 1650 | finline |
e5166d71 | 1651 | Common Report Var(flag_no_inline,0) Init(0) Optimization |
8fb42bbc | 1652 | Enable inlining of function declared \"inline\", disabling disables all inlining. |
1e06725a | 1653 | |
b97510b2 | 1654 | finline-small-functions |
1655 | Common Report Var(flag_inline_small_functions) Optimization | |
8fb42bbc | 1656 | Integrate functions into their callers when code size is known not to grow. |
b97510b2 | 1657 | |
1e06725a | 1658 | finline-functions |
87c75316 | 1659 | Common Report Var(flag_inline_functions) Optimization |
8fb42bbc | 1660 | Integrate functions not declared \"inline\" into their callers when profitable. |
1e06725a | 1661 | |
f1aa280c | 1662 | finline-functions-called-once |
055af069 | 1663 | Common Report Var(flag_inline_functions_called_once) Optimization |
8fb42bbc | 1664 | Integrate functions only required by their single caller. |
9e0baf4d | 1665 | |
39470ac3 | 1666 | finline-limit- |
67089c6b | 1667 | Common RejectNegative Joined Alias(finline-limit=) |
39470ac3 | 1668 | |
1669 | finline-limit= | |
1670 | Common RejectNegative Joined UInteger | |
8fb42bbc | 1671 | -finline-limit=<number> Limit the size of inlined functions to <number>. |
39470ac3 | 1672 | |
1cd6e20d | 1673 | finline-atomics |
1674 | Common Report Var(flag_inline_atomics) Init(1) Optimization | |
1675 | Inline __atomic operations when a lock free instruction sequence is available. | |
1676 | ||
3c0f15b4 | 1677 | fcf-protection |
1678 | Common RejectNegative Alias(fcf-protection=,full) | |
1679 | ||
1680 | fcf-protection= | |
1681 | Common Report Joined RejectNegative Enum(cf_protection_level) Var(flag_cf_protection) Init(CF_NONE) | |
1682 | -fcf-protection=[full|branch|return|none] Instrument functions with checks to verify jump/call/return control-flow transfer | |
1683 | instructions have valid targets. | |
1684 | ||
1685 | Enum | |
dc4ed9fd | 1686 | Name(cf_protection_level) Type(enum cf_protection_level) UnknownError(unknown Control-Flow Protection Level %qs) |
3c0f15b4 | 1687 | |
1688 | EnumValue | |
1689 | Enum(cf_protection_level) String(full) Value(CF_FULL) | |
1690 | ||
1691 | EnumValue | |
1692 | Enum(cf_protection_level) String(branch) Value(CF_BRANCH) | |
1693 | ||
1694 | EnumValue | |
1695 | Enum(cf_protection_level) String(return) Value(CF_RETURN) | |
1696 | ||
1697 | EnumValue | |
1698 | Enum(cf_protection_level) String(none) Value(CF_NONE) | |
1699 | ||
ecdb6d1a | 1700 | finstrument-functions |
2e9da478 | 1701 | Common Report Var(flag_instrument_function_entry_exit) |
8fb42bbc | 1702 | Instrument function entry and exit with profiling calls. |
ecdb6d1a | 1703 | |
a95c0776 | 1704 | finstrument-functions-exclude-function-list= |
1705 | Common RejectNegative Joined | |
8fb42bbc | 1706 | -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions. |
a95c0776 | 1707 | |
1708 | finstrument-functions-exclude-file-list= | |
1709 | Common RejectNegative Joined | |
8fb42bbc | 1710 | -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files. |
a95c0776 | 1711 | |
a17a73c7 | 1712 | fipa-cp |
87c75316 | 1713 | Common Report Var(flag_ipa_cp) Optimization |
8fb42bbc | 1714 | Perform interprocedural constant propagation. |
a17a73c7 | 1715 | |
2a15795f | 1716 | fipa-cp-clone |
1717 | Common Report Var(flag_ipa_cp_clone) Optimization | |
8fb42bbc | 1718 | Perform cloning to make Interprocedural constant propagation stronger. |
2a15795f | 1719 | |
7715e0c8 | 1720 | fipa-cp-alignment |
afdf4bf2 | 1721 | Common Ignore |
1722 | Does nothing. Preserved for backward compatibility. | |
7715e0c8 | 1723 | |
a54071b2 | 1724 | fipa-bit-cp |
1725 | Common Report Var(flag_ipa_bit_cp) Optimization | |
1726 | Perform interprocedural bitwise constant propagation. | |
1727 | ||
4e2db0ad | 1728 | fipa-profile |
1729 | Common Report Var(flag_ipa_profile) Init(0) Optimization | |
8fb42bbc | 1730 | Perform interprocedural profile propagation. |
f7d118a9 | 1731 | |
bdf4f142 | 1732 | fipa-pta |
87c75316 | 1733 | Common Report Var(flag_ipa_pta) Init(0) Optimization |
8fb42bbc | 1734 | Perform interprocedural points-to analysis. |
bdf4f142 | 1735 | |
4e2db0ad | 1736 | fipa-pure-const |
1737 | Common Report Var(flag_ipa_pure_const) Init(0) Optimization | |
8fb42bbc | 1738 | Discover pure and const functions. |
4e2db0ad | 1739 | |
52200d03 | 1740 | fipa-icf |
1741 | Common Report Var(flag_ipa_icf) Optimization | |
8fb42bbc | 1742 | Perform Identical Code Folding for functions and read-only variables. |
52200d03 | 1743 | |
1744 | fipa-icf-functions | |
1745 | Common Report Var(flag_ipa_icf_functions) Optimization | |
8fb42bbc | 1746 | Perform Identical Code Folding for functions. |
52200d03 | 1747 | |
1748 | fipa-icf-variables | |
131ad74b | 1749 | Common Report Var(flag_ipa_icf_variables) Optimization |
8fb42bbc | 1750 | Perform Identical Code Folding for variables. |
52200d03 | 1751 | |
f7d118a9 | 1752 | fipa-reference |
87c75316 | 1753 | Common Report Var(flag_ipa_reference) Init(0) Optimization |
8c8b8b86 | 1754 | Discover read-only and non addressable static variables. |
1755 | ||
1756 | fipa-reference-addressable | |
1757 | Common Report Var(flag_ipa_reference_addressable) Init(0) Optimization | |
1758 | Discover read-only, write-only and non-addressable static variables. | |
f7d118a9 | 1759 | |
51bdb99d | 1760 | fipa-stack-alignment |
1761 | Common Report Var(flag_ipa_stack_alignment) Init(1) Optimization | |
1762 | Reduce stack alignment on call sites if possible. | |
1763 | ||
604cde73 | 1764 | fipa-matrix-reorg |
fa62b5da | 1765 | Common Ignore |
1766 | Does nothing. Preserved for backward compatibility. | |
604cde73 | 1767 | |
f27ac341 | 1768 | fipa-struct-reorg |
210a8eb6 | 1769 | Common Ignore |
1770 | Does nothing. Preserved for backward compatibility. | |
f27ac341 | 1771 | |
25a8e007 | 1772 | fipa-vrp |
1773 | Common Report Var(flag_ipa_vrp) Optimization | |
1774 | Perform IPA Value Range Propagation. | |
1775 | ||
47dd2e78 | 1776 | fira-algorithm= |
bfedbed1 | 1777 | Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) Optimization |
6ac368bb | 1778 | -fira-algorithm=[CB|priority] Set the used IRA algorithm. |
14792f4e | 1779 | |
d62a5950 | 1780 | Enum |
1781 | Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) | |
1782 | ||
1783 | EnumValue | |
1784 | Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) | |
1785 | ||
1786 | EnumValue | |
1787 | Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) | |
1788 | ||
14792f4e | 1789 | fira-region= |
bfedbed1 | 1790 | Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_AUTODETECT) Optimization |
6ac368bb | 1791 | -fira-region=[one|all|mixed] Set regions for IRA. |
47dd2e78 | 1792 | |
d62a5950 | 1793 | Enum |
1794 | Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) | |
1795 | ||
1796 | EnumValue | |
1797 | Enum(ira_region) String(one) Value(IRA_REGION_ONE) | |
1798 | ||
1799 | EnumValue | |
1800 | Enum(ira_region) String(all) Value(IRA_REGION_ALL) | |
1801 | ||
1802 | EnumValue | |
1803 | Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) | |
1804 | ||
1ec78e16 | 1805 | fira-hoist-pressure |
1806 | Common Report Var(flag_ira_hoist_pressure) Init(1) Optimization | |
1807 | Use IRA based register pressure calculation | |
1808 | in RTL hoist optimizations. | |
1809 | ||
e8eed2f8 | 1810 | fira-loop-pressure |
155354e5 | 1811 | Common Report Var(flag_ira_loop_pressure) Optimization |
e8eed2f8 | 1812 | Use IRA based register pressure calculation |
1813 | in RTL loop optimizations. | |
1814 | ||
47dd2e78 | 1815 | fira-share-save-slots |
bfedbed1 | 1816 | Common Report Var(flag_ira_share_save_slots) Init(1) Optimization |
47dd2e78 | 1817 | Share slots for saving different hard registers. |
1818 | ||
1819 | fira-share-spill-slots | |
bfedbed1 | 1820 | Common Report Var(flag_ira_share_spill_slots) Init(1) Optimization |
47dd2e78 | 1821 | Share stack slots for spilled pseudo-registers. |
1822 | ||
1823 | fira-verbose= | |
4aafe913 | 1824 | Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) |
cf210371 | 1825 | -fira-verbose=<number> Control IRA's level of diagnostic messages. |
47dd2e78 | 1826 | |
dec41e98 | 1827 | fivopts |
87c75316 | 1828 | Common Report Var(flag_ivopts) Init(1) Optimization |
8fb42bbc | 1829 | Optimize induction variables on trees. |
dec41e98 | 1830 | |
51d8e657 | 1831 | fjump-tables |
87c75316 | 1832 | Common Var(flag_jump_tables) Init(1) Optimization |
8fb42bbc | 1833 | Use jump tables for sufficiently large switch statements. |
51d8e657 | 1834 | |
1e06725a | 1835 | fkeep-inline-functions |
2e9da478 | 1836 | Common Report Var(flag_keep_inline_functions) |
8fb42bbc | 1837 | Generate code for functions even if they are fully inlined. |
1e06725a | 1838 | |
c071eedc | 1839 | fkeep-static-functions |
1840 | Common Report Var(flag_keep_static_functions) | |
8fb42bbc | 1841 | Generate code for static functions even if they are never called. |
c071eedc | 1842 | |
1e06725a | 1843 | fkeep-static-consts |
2e9da478 | 1844 | Common Report Var(flag_keep_static_consts) Init(1) |
8fb42bbc | 1845 | Emit static const variables even if they are not used. |
1e06725a | 1846 | |
ecdb6d1a | 1847 | fleading-underscore |
2e9da478 | 1848 | Common Report Var(flag_leading_underscore) Init(-1) |
8fb42bbc | 1849 | Give external symbols a leading underscore. |
ecdb6d1a | 1850 | |
4f87b914 | 1851 | floop-optimize |
3b0273a1 | 1852 | Common Ignore |
334ec2d8 | 1853 | Does nothing. Preserved for backward compatibility. |
4f87b914 | 1854 | |
497ba60f | 1855 | flra-remat |
1856 | Common Report Var(flag_lra_remat) Optimization | |
8fb42bbc | 1857 | Do CFG-sensitive rematerialization in LRA. |
497ba60f | 1858 | |
7bfefa9d | 1859 | flto |
cbcf2791 | 1860 | Common |
7bfefa9d | 1861 | Enable link-time optimization. |
1862 | ||
cbcf2791 | 1863 | flto= |
1864 | Common RejectNegative Joined Var(flag_lto) | |
1865 | Link-time optimization with number of parallel jobs or jobserver. | |
1866 | ||
4a137074 | 1867 | Enum |
1868 | Name(lto_partition_model) Type(enum lto_partition_model) UnknownError(unknown LTO partitioning model %qs) | |
48e3ea52 | 1869 | |
4a137074 | 1870 | EnumValue |
1871 | Enum(lto_partition_model) String(none) Value(LTO_PARTITION_NONE) | |
48e3ea52 | 1872 | |
4a137074 | 1873 | EnumValue |
1874 | Enum(lto_partition_model) String(one) Value(LTO_PARTITION_ONE) | |
1875 | ||
1876 | EnumValue | |
1877 | Enum(lto_partition_model) String(balanced) Value(LTO_PARTITION_BALANCED) | |
1878 | ||
1879 | EnumValue | |
1880 | Enum(lto_partition_model) String(1to1) Value(LTO_PARTITION_1TO1) | |
1881 | ||
1882 | EnumValue | |
1883 | Enum(lto_partition_model) String(max) Value(LTO_PARTITION_MAX) | |
0851d795 | 1884 | |
4a137074 | 1885 | flto-partition= |
1886 | Common Joined RejectNegative Enum(lto_partition_model) Var(flag_lto_partition) Init(LTO_PARTITION_BALANCED) | |
8fb42bbc | 1887 | Specify the algorithm to partition symbols and vars at linktime. |
cbcf2791 | 1888 | |
7bfefa9d | 1889 | ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. |
1890 | flto-compression-level= | |
3dcfd230 | 1891 | Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) IntegerRange(0, 19) |
1892 | -flto-compression-level=<number> Use zlib/zstd compression level <number> for IL. | |
7bfefa9d | 1893 | |
d585ba22 | 1894 | flto-odr-type-merging |
3dea6fae | 1895 | Common Ignore |
1896 | Does nothing. Preserved for backward compatibility. | |
d585ba22 | 1897 | |
7bfefa9d | 1898 | flto-report |
596c40fb | 1899 | Common Report Var(flag_lto_report) Init(0) |
8fb42bbc | 1900 | Report various link-time optimization statistics. |
7bfefa9d | 1901 | |
b63a7a3e | 1902 | flto-report-wpa |
1903 | Common Report Var(flag_lto_report_wpa) Init(0) | |
8fb42bbc | 1904 | Report various link-time optimization statistics for WPA only. |
b63a7a3e | 1905 | |
ecdb6d1a | 1906 | fmath-errno |
ecee1b29 | 1907 | Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined |
8fb42bbc | 1908 | Set errno after built-in math functions. |
ecdb6d1a | 1909 | |
566d7c74 | 1910 | fmax-errors= |
1911 | Common Joined RejectNegative UInteger Var(flag_max_errors) | |
8fb42bbc | 1912 | -fmax-errors=<number> Maximum number of errors to report. |
566d7c74 | 1913 | |
ecdb6d1a | 1914 | fmem-report |
2e9da478 | 1915 | Common Report Var(mem_report) |
8fb42bbc | 1916 | Report on permanent memory allocation. |
ecdb6d1a | 1917 | |
93e5f148 | 1918 | fmem-report-wpa |
1919 | Common Report Var(mem_report_wpa) | |
8fb42bbc | 1920 | Report on permanent memory allocation in WPA only. |
93e5f148 | 1921 | |
82a16202 | 1922 | ; This will attempt to merge constant section constants, if 1 only |
1923 | ; string constants and constants from constant pool, if 2 also constant | |
1924 | ; variables. | |
ecdb6d1a | 1925 | fmerge-all-constants |
ce7711df | 1926 | Common Report Var(flag_merge_constants,2) Init(1) |
8fb42bbc | 1927 | Attempt to merge identical constants and constant variables. |
ecdb6d1a | 1928 | |
1929 | fmerge-constants | |
ce7711df | 1930 | Common Report Var(flag_merge_constants,1) |
8fb42bbc | 1931 | Attempt to merge identical constants across compilation units. |
ecdb6d1a | 1932 | |
7765591b | 1933 | fmerge-debug-strings |
1934 | Common Report Var(flag_merge_debug_strings) Init(1) | |
8fb42bbc | 1935 | Attempt to merge identical debug strings across compilation units. |
7765591b | 1936 | |
1e06725a | 1937 | fmessage-length= |
1938 | Common RejectNegative Joined UInteger | |
8fb42bbc | 1939 | -fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping. |
1e06725a | 1940 | |
406a73e7 | 1941 | fmodulo-sched |
87c75316 | 1942 | Common Report Var(flag_modulo_sched) Optimization |
8fb42bbc | 1943 | Perform SMS based modulo scheduling before the first scheduling pass. |
406a73e7 | 1944 | |
3a943084 | 1945 | fmodulo-sched-allow-regmoves |
bfedbed1 | 1946 | Common Report Var(flag_modulo_sched_allow_regmoves) Optimization |
8fb42bbc | 1947 | Perform SMS based modulo scheduling with register moves allowed. |
3a943084 | 1948 | |
3a0ecac2 | 1949 | fmove-loop-invariants |
1941e89d | 1950 | Common Report Var(flag_move_loop_invariants) Optimization |
8fb42bbc | 1951 | Move loop invariant computations out of loops. |
3a0ecac2 | 1952 | |
3072d30e | 1953 | fdce |
76c71f34 | 1954 | Common Var(flag_dce) Init(1) Optimization |
8fb42bbc | 1955 | Use the RTL dead code elimination pass. |
3072d30e | 1956 | |
1957 | fdse | |
4692c7e8 | 1958 | Common Var(flag_dse) Init(0) Optimization |
8fb42bbc | 1959 | Use the RTL dead store elimination pass. |
3072d30e | 1960 | |
f045d41d | 1961 | freschedule-modulo-scheduled-loops |
87c75316 | 1962 | Common Report Var(flag_resched_modulo_sched) Optimization |
8fb42bbc | 1963 | Enable/Disable the traditional scheduling in loops that already passed modulo scheduling. |
f045d41d | 1964 | |
ecdb6d1a | 1965 | fnon-call-exceptions |
87c75316 | 1966 | Common Report Var(flag_non_call_exceptions) Optimization |
8fb42bbc | 1967 | Support synchronous non-call exceptions. |
ecdb6d1a | 1968 | |
38e21583 | 1969 | foffload= |
1970 | Common Driver Joined MissingArgError(options or targets missing after %qs) | |
8fb42bbc | 1971 | -foffload=<targets>=<options> Specify offloading targets and options for them. |
38e21583 | 1972 | |
1973 | foffload-abi= | |
1974 | Common Joined RejectNegative Enum(offload_abi) Var(flag_offload_abi) Init(OFFLOAD_ABI_UNSET) | |
8fb42bbc | 1975 | -foffload-abi=[lp64|ilp32] Set the ABI to use in an offload compiler. |
38e21583 | 1976 | |
1977 | Enum | |
1978 | Name(offload_abi) Type(enum offload_abi) UnknownError(unknown offload ABI %qs) | |
1979 | ||
1980 | EnumValue | |
1981 | Enum(offload_abi) String(ilp32) Value(OFFLOAD_ABI_ILP32) | |
1982 | ||
1983 | EnumValue | |
1984 | Enum(offload_abi) String(lp64) Value(OFFLOAD_ABI_LP64) | |
1985 | ||
1e06725a | 1986 | fomit-frame-pointer |
87c75316 | 1987 | Common Report Var(flag_omit_frame_pointer) Optimization |
8fb42bbc | 1988 | When possible do not generate stack frames. |
1e06725a | 1989 | |
7bd765d4 | 1990 | fopt-info |
1991 | Common Report Var(flag_opt_info) Optimization | |
8fb42bbc | 1992 | Enable all optimization info dumps on stderr. |
7bd765d4 | 1993 | |
1994 | fopt-info- | |
1995 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
8fb42bbc | 1996 | -fopt-info[-<type>=filename] Dump compiler optimization details. |
7bd765d4 | 1997 | |
9dcf2a11 | 1998 | fsave-optimization-record |
1999 | Common Report Var(flag_save_optimization_record) Optimization | |
2000 | Write a SRCFILE.opt-record.json file detailing what optimizations were performed. | |
2001 | ||
ecdb6d1a | 2002 | foptimize-register-move |
284f0696 | 2003 | Common Ignore |
2004 | Does nothing. Preserved for backward compatibility. | |
ecdb6d1a | 2005 | |
1e06725a | 2006 | foptimize-sibling-calls |
87c75316 | 2007 | Common Report Var(flag_optimize_sibling_calls) Optimization |
8fb42bbc | 2008 | Optimize sibling and tail recursive calls. |
1e06725a | 2009 | |
2862cf88 | 2010 | fpartial-inlining |
bfedbed1 | 2011 | Common Report Var(flag_partial_inlining) Optimization |
8fb42bbc | 2012 | Perform partial inlining. |
2862cf88 | 2013 | |
51949610 | 2014 | fpre-ipa-mem-report |
2015 | Common Report Var(pre_ipa_mem_report) | |
8fb42bbc | 2016 | Report on memory allocation before interprocedural optimization. |
51949610 | 2017 | |
2018 | fpost-ipa-mem-report | |
2019 | Common Report Var(post_ipa_mem_report) | |
8fb42bbc | 2020 | Report on memory allocation before interprocedural optimization. |
51949610 | 2021 | |
ecdb6d1a | 2022 | fpack-struct |
87c75316 | 2023 | Common Report Var(flag_pack_struct) Optimization |
8fb42bbc | 2024 | Pack structure members together without holes. |
ecdb6d1a | 2025 | |
6b5553e5 | 2026 | fpack-struct= |
87c75316 | 2027 | Common RejectNegative Joined UInteger Optimization |
8fb42bbc | 2028 | -fpack-struct=<number> Set initial maximum structure member alignment. |
6b5553e5 | 2029 | |
1e06725a | 2030 | fpcc-struct-return |
4aafe913 | 2031 | Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) |
8fb42bbc | 2032 | Return small aggregates in memory, not registers. |
1e06725a | 2033 | |
2034 | fpeel-loops | |
87c75316 | 2035 | Common Report Var(flag_peel_loops) Optimization |
8fb42bbc | 2036 | Perform loop peeling. |
1e06725a | 2037 | |
2038 | fpeephole | |
87c75316 | 2039 | Common Report Var(flag_no_peephole,0) Optimization |
8fb42bbc | 2040 | Enable machine specific peephole optimizations. |
1e06725a | 2041 | |
ecdb6d1a | 2042 | fpeephole2 |
87c75316 | 2043 | Common Report Var(flag_peephole2) Optimization |
8fb42bbc | 2044 | Enable an RTL peephole pass before sched2. |
ecdb6d1a | 2045 | |
82a16202 | 2046 | fPIC |
5ec4a949 | 2047 | Common Report Var(flag_pic,2) Negative(fPIE) Init(-1) |
8fb42bbc | 2048 | Generate position-independent code if possible (large mode). |
82a16202 | 2049 | |
2050 | fPIE | |
e9abca4f | 2051 | Common Report Var(flag_pie,2) Negative(fpic) Init(-1) |
8fb42bbc | 2052 | Generate position-independent code for executables if possible (large mode). |
82a16202 | 2053 | |
ecdb6d1a | 2054 | fpic |
5ec4a949 | 2055 | Common Report Var(flag_pic,1) Negative(fpie) Init(-1) |
8fb42bbc | 2056 | Generate position-independent code if possible (small mode). |
ecdb6d1a | 2057 | |
2058 | fpie | |
e9abca4f | 2059 | Common Report Var(flag_pie,1) Negative(fPIC) Init(-1) |
8fb42bbc | 2060 | Generate position-independent code for executables if possible (small mode). |
ecdb6d1a | 2061 | |
562ef5cc | 2062 | fplt |
2063 | Common Report Var(flag_plt) Init(1) Optimization | |
8fb42bbc | 2064 | Use PLT for PIC calls (-fno-plt: load the address from GOT at call site). |
562ef5cc | 2065 | |
9227b6fc | 2066 | fplugin= |
f0da0668 | 2067 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 2068 | Specify a plugin to load. |
9227b6fc | 2069 | |
2070 | fplugin-arg- | |
f0da0668 | 2071 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 2072 | -fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name>. |
9227b6fc | 2073 | |
ad4a85ad | 2074 | fpredictive-commoning |
76c71f34 | 2075 | Common Report Var(flag_predictive_commoning) Optimization |
ad4a85ad | 2076 | Run predictive commoning optimization. |
2077 | ||
1e06725a | 2078 | fprefetch-loop-arrays |
cd459e62 | 2079 | Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization |
8fb42bbc | 2080 | Generate prefetch instructions, if available, for arrays in loops. |
1e06725a | 2081 | |
ecdb6d1a | 2082 | fprofile |
2e9da478 | 2083 | Common Report Var(profile_flag) |
8fb42bbc | 2084 | Enable basic program profiling code. |
ecdb6d1a | 2085 | |
9bdf2425 | 2086 | fprofile-abs-path |
2087 | Common Report Var(profile_abs_path_flag) | |
2088 | Generate absolute source path names for gcov. | |
2089 | ||
ecdb6d1a | 2090 | fprofile-arcs |
2e9da478 | 2091 | Common Report Var(profile_arc_flag) |
8fb42bbc | 2092 | Insert arc-based program profiling code. |
ecdb6d1a | 2093 | |
3e3a0e9c | 2094 | fprofile-dir= |
cc4fa57a | 2095 | Common Joined RejectNegative Var(profile_data_prefix) |
3e3a0e9c | 2096 | Set the top-level directory for storing the profile data. |
2097 | The default is 'pwd'. | |
2098 | ||
4048b1f0 | 2099 | fprofile-note= |
2100 | Common Joined RejectNegative Var(profile_note_location) | |
2101 | Select the name for storing the profile note file. | |
2102 | ||
e0dc6f2b | 2103 | fprofile-correction |
2104 | Common Report Var(flag_profile_correction) | |
8fb42bbc | 2105 | Enable correction of flow inconsistent profile data input. |
e0dc6f2b | 2106 | |
7132b755 | 2107 | fprofile-update= |
2108 | Common Joined RejectNegative Enum(profile_update) Var(flag_profile_update) Init(PROFILE_UPDATE_SINGLE) | |
3af33bcf | 2109 | -fprofile-update=[single|atomic|prefer-atomic] Set the profile update method. |
7132b755 | 2110 | |
aed74248 | 2111 | fprofile-filter-files= |
2112 | Common Joined RejectNegative Var(flag_profile_filter_files) | |
2113 | Instrument only functions from files where names match any regular expression (separated by a semi-colon). | |
2114 | ||
2115 | fprofile-exclude-files= | |
2116 | Common Joined RejectNegative Var(flag_profile_exclude_files) | |
2117 | Instrument only functions from files where names do not match all the regular expressions (separated by a semi-colon). | |
2118 | ||
7132b755 | 2119 | Enum |
2120 | Name(profile_update) Type(enum profile_update) UnknownError(unknown profile update method %qs) | |
2121 | ||
2122 | EnumValue | |
2123 | Enum(profile_update) String(single) Value(PROFILE_UPDATE_SINGLE) | |
2124 | ||
2125 | EnumValue | |
2126 | Enum(profile_update) String(atomic) Value(PROFILE_UPDATE_ATOMIC) | |
2127 | ||
3af33bcf | 2128 | EnumValue |
2129 | Enum(profile_update) String(prefer-atomic) Value(PROFILE_UPDATE_PREFER_ATOMIC) | |
2130 | ||
7dea76ba | 2131 | fprofile-generate |
2132 | Common | |
8fb42bbc | 2133 | Enable common options for generating profile info for profile feedback directed optimizations. |
7dea76ba | 2134 | |
3e3a0e9c | 2135 | fprofile-generate= |
2136 | Common Joined RejectNegative | |
8fb42bbc | 2137 | Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir=. |
3e3a0e9c | 2138 | |
7dea76ba | 2139 | fprofile-use |
3e3a0e9c | 2140 | Common Var(flag_profile_use) |
8fb42bbc | 2141 | Enable common options for performing profile feedback directed optimizations. |
7dea76ba | 2142 | |
3e3a0e9c | 2143 | fprofile-use= |
2144 | Common Joined RejectNegative | |
8fb42bbc | 2145 | Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir=. |
3e3a0e9c | 2146 | |
1c6a7b8c | 2147 | fprofile-values |
2e9da478 | 2148 | Common Report Var(flag_profile_values) |
8fb42bbc | 2149 | Insert code to profile values of expressions. |
1c6a7b8c | 2150 | |
5168ef25 | 2151 | fprofile-report |
2152 | Common Report Var(profile_report) | |
8fb42bbc | 2153 | Report on consistency of profile. |
5168ef25 | 2154 | |
af48f0b1 | 2155 | fprofile-reorder-functions |
2156 | Common Report Var(flag_profile_reorder_functions) | |
8fb42bbc | 2157 | Enable function reordering that improves code placement. |
af48f0b1 | 2158 | |
e6c4532a | 2159 | fpatchable-function-entry= |
2160 | Common Joined Optimization | |
2161 | Insert NOP instructions at each function entry. | |
2162 | ||
1e06725a | 2163 | frandom-seed |
9faf44d6 | 2164 | Common Var(common_deferred_options) Defer |
1e06725a | 2165 | |
2166 | frandom-seed= | |
9faf44d6 | 2167 | Common Joined RejectNegative Var(common_deferred_options) Defer |
4589a801 | 2168 | -frandom-seed=<string> Make compile reproducible using <string>. |
1e06725a | 2169 | |
7c6733e8 | 2170 | ; This switch causes the command line that was used to create an |
2171 | ; object file to be recorded into the object file. The exact format | |
2172 | ; of this recording is target and binary file format dependent. | |
2173 | ; It is related to the -fverbose-asm switch, but that switch only | |
2174 | ; records information in the assembler output file as comments, so | |
2175 | ; they never reach the object file. | |
2176 | frecord-gcc-switches | |
2177 | Common Report Var(flag_record_gcc_switches) | |
2178 | Record gcc command line switches in the object file. | |
2179 | ||
1e06725a | 2180 | freg-struct-return |
5461e683 | 2181 | Common Report Var(flag_pcc_struct_return,0) Optimization |
8fb42bbc | 2182 | Return small aggregates in registers. |
1e06725a | 2183 | |
ecdb6d1a | 2184 | fregmove |
284f0696 | 2185 | Common Ignore |
2186 | Does nothing. Preserved for backward compatibility. | |
ecdb6d1a | 2187 | |
e65bc032 | 2188 | flifetime-dse |
5065f8a0 | 2189 | Common Report Var(flag_lifetime_dse,2) Init(2) Optimization |
e65bc032 | 2190 | Tell DSE that the storage for a C++ object is dead when the constructor |
2191 | starts and when the destructor finishes. | |
2192 | ||
5065f8a0 | 2193 | flifetime-dse= |
52368c34 | 2194 | Common Joined RejectNegative UInteger Var(flag_lifetime_dse) Optimization IntegerRange(0, 2) |
5065f8a0 | 2195 | |
126dab7c | 2196 | flive-patching |
2197 | Common RejectNegative Alias(flive-patching=,inline-clone) Optimization | |
2198 | ||
2199 | flive-patching= | |
2200 | Common Report Joined RejectNegative Enum(live_patching_level) Var(flag_live_patching) Init(LIVE_PATCHING_NONE) Optimization | |
2201 | -flive-patching=[inline-only-static|inline-clone] Control IPA | |
2202 | optimizations to provide a safe compilation for live-patching. At the same | |
2203 | time, provides multiple-level control on the enabled IPA optimizations. | |
2204 | ||
2205 | Enum | |
2206 | Name(live_patching_level) Type(enum live_patching_level) UnknownError(unknown Live-Patching Level %qs) | |
2207 | ||
2208 | EnumValue | |
2209 | Enum(live_patching_level) String(inline-only-static) Value(LIVE_PATCHING_INLINE_ONLY_STATIC) | |
2210 | ||
2211 | EnumValue | |
2212 | Enum(live_patching_level) String(inline-clone) Value(LIVE_PATCHING_INLINE_CLONE) | |
2213 | ||
4ee64e30 | 2214 | fallocation-dce |
2215 | Common Report Var(flag_allocation_dce) Init(1) Optimization | |
2216 | Tell DCE to remove unused C++ allocations. | |
2217 | ||
57a8bf1b | 2218 | flive-range-shrinkage |
2219 | Common Report Var(flag_live_range_shrinkage) Init(0) Optimization | |
8fb42bbc | 2220 | Relief of register pressure through live range shrinkage. |
57a8bf1b | 2221 | |
ecdb6d1a | 2222 | frename-registers |
87c75316 | 2223 | Common Report Var(flag_rename_registers) Init(2) Optimization |
8fb42bbc | 2224 | Perform a register renaming optimization pass. |
ecdb6d1a | 2225 | |
012ad66c | 2226 | fschedule-fusion |
2227 | Common Report Var(flag_schedule_fusion) Init(2) Optimization | |
8fb42bbc | 2228 | Perform a target dependent instruction fusion optimization pass. |
012ad66c | 2229 | |
ecdb6d1a | 2230 | freorder-blocks |
87c75316 | 2231 | Common Report Var(flag_reorder_blocks) Optimization |
8fb42bbc | 2232 | Reorder basic blocks to improve code placement. |
ecdb6d1a | 2233 | |
e57ef194 | 2234 | freorder-blocks-algorithm= |
2235 | Common Joined RejectNegative Enum(reorder_blocks_algorithm) Var(flag_reorder_blocks_algorithm) Init(REORDER_BLOCKS_ALGORITHM_SIMPLE) Optimization | |
6ac368bb | 2236 | -freorder-blocks-algorithm=[simple|stc] Set the used basic block reordering algorithm. |
e57ef194 | 2237 | |
2238 | Enum | |
2239 | Name(reorder_blocks_algorithm) Type(enum reorder_blocks_algorithm) UnknownError(unknown basic block reordering algorithm %qs) | |
2240 | ||
2241 | EnumValue | |
2242 | Enum(reorder_blocks_algorithm) String(simple) Value(REORDER_BLOCKS_ALGORITHM_SIMPLE) | |
2243 | ||
2244 | EnumValue | |
2245 | Enum(reorder_blocks_algorithm) String(stc) Value(REORDER_BLOCKS_ALGORITHM_STC) | |
2246 | ||
4f18499c | 2247 | freorder-blocks-and-partition |
87c75316 | 2248 | Common Report Var(flag_reorder_blocks_and_partition) Optimization |
8fb42bbc | 2249 | Reorder basic blocks and partition into hot and cold sections. |
4f18499c | 2250 | |
ecdb6d1a | 2251 | freorder-functions |
87c75316 | 2252 | Common Report Var(flag_reorder_functions) Optimization |
8fb42bbc | 2253 | Reorder functions to improve code placement. |
ecdb6d1a | 2254 | |
1e06725a | 2255 | frerun-cse-after-loop |
c17f64cc | 2256 | Common Report Var(flag_rerun_cse_after_loop) Optimization |
8fb42bbc | 2257 | Add a common subexpression elimination pass after loop optimizations. |
1e06725a | 2258 | |
4f87b914 | 2259 | frerun-loop-opt |
3b0273a1 | 2260 | Common Ignore |
334ec2d8 | 2261 | Does nothing. Preserved for backward compatibility. |
4f87b914 | 2262 | |
5466f589 | 2263 | frounding-math |
ecee1b29 | 2264 | Common Report Var(flag_rounding_math) Optimization SetByCombined |
8fb42bbc | 2265 | Disable optimizations that assume default FP rounding behavior. |
5466f589 | 2266 | |
ecdb6d1a | 2267 | fsched-interblock |
87c75316 | 2268 | Common Report Var(flag_schedule_interblock) Init(1) Optimization |
8fb42bbc | 2269 | Enable scheduling across basic blocks. |
ecdb6d1a | 2270 | |
a7dcf969 | 2271 | fsched-pressure |
2272 | Common Report Var(flag_sched_pressure) Init(0) Optimization | |
8fb42bbc | 2273 | Enable register pressure sensitive insn scheduling. |
a7dcf969 | 2274 | |
ecdb6d1a | 2275 | fsched-spec |
87c75316 | 2276 | Common Report Var(flag_schedule_speculative) Init(1) Optimization |
8fb42bbc | 2277 | Allow speculative motion of non-loads. |
ecdb6d1a | 2278 | |
2279 | fsched-spec-load | |
87c75316 | 2280 | Common Report Var(flag_schedule_speculative_load) Optimization |
8fb42bbc | 2281 | Allow speculative motion of some loads. |
ecdb6d1a | 2282 | |
2283 | fsched-spec-load-dangerous | |
87c75316 | 2284 | Common Report Var(flag_schedule_speculative_load_dangerous) Optimization |
8fb42bbc | 2285 | Allow speculative motion of more loads. |
ecdb6d1a | 2286 | |
1e06725a | 2287 | fsched-verbose= |
043bc144 | 2288 | Common RejectNegative Joined UInteger Var(sched_verbose_param) Init(1) |
8fb42bbc | 2289 | -fsched-verbose=<number> Set the verbosity level of the scheduler. |
1e06725a | 2290 | |
ecdb6d1a | 2291 | fsched2-use-superblocks |
87c75316 | 2292 | Common Report Var(flag_sched2_use_superblocks) Optimization |
8fb42bbc | 2293 | If scheduling post reload, do superblock scheduling. |
ecdb6d1a | 2294 | |
2295 | fsched2-use-traces | |
3b0273a1 | 2296 | Common Ignore |
fda153ea | 2297 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 2298 | |
1e06725a | 2299 | fschedule-insns |
87c75316 | 2300 | Common Report Var(flag_schedule_insns) Optimization |
8fb42bbc | 2301 | Reschedule instructions before register allocation. |
1e06725a | 2302 | |
2303 | fschedule-insns2 | |
87c75316 | 2304 | Common Report Var(flag_schedule_insns_after_reload) Optimization |
8fb42bbc | 2305 | Reschedule instructions after register allocation. |
1e06725a | 2306 | |
e1ab7874 | 2307 | ; This flag should be on when a target implements non-trivial |
2308 | ; scheduling hooks, maybe saving some information for its own sake. | |
8fb42bbc | 2309 | ; On IA64, for example, this is used for correct bundling. |
e1ab7874 | 2310 | fselective-scheduling |
2311 | Common Report Var(flag_selective_scheduling) Optimization | |
8fb42bbc | 2312 | Schedule instructions using selective scheduling algorithm. |
e1ab7874 | 2313 | |
2314 | fselective-scheduling2 | |
8fb42bbc | 2315 | Common Report Var(flag_selective_scheduling2) Optimization |
2316 | Run selective scheduling after reload. | |
e1ab7874 | 2317 | |
c081d2fc | 2318 | fself-test= |
2319 | Common Undocumented Joined Var(flag_self_test) | |
2320 | Run self-tests, using the given path to locate test files. | |
99b4f3a2 | 2321 | |
e1ab7874 | 2322 | fsel-sched-pipelining |
2323 | Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization | |
8fb42bbc | 2324 | Perform software pipelining of inner loops during selective scheduling. |
e1ab7874 | 2325 | |
2326 | fsel-sched-pipelining-outer-loops | |
2327 | Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization | |
8fb42bbc | 2328 | Perform software pipelining of outer loops during selective scheduling. |
e1ab7874 | 2329 | |
2330 | fsel-sched-reschedule-pipelined | |
2331 | Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization | |
8fb42bbc | 2332 | Reschedule pipelined regions without pipelining. |
e1ab7874 | 2333 | |
92bfaaee | 2334 | fsemantic-interposition |
2335 | Common Report Var(flag_semantic_interposition) Init(1) | |
8fb42bbc | 2336 | Allow interposing function (or variables) by ones with different semantics (or initializer) respectively by dynamic linker. |
92bfaaee | 2337 | |
82a16202 | 2338 | ; sched_stalled_insns means that insns can be moved prematurely from the queue |
2339 | ; of stalled insns into the ready list. | |
52c4b43f | 2340 | fsched-stalled-insns |
46f8e3b0 | 2341 | Common Report Var(flag_sched_stalled_insns) Optimization UInteger |
8fb42bbc | 2342 | Allow premature scheduling of queued insns. |
52c4b43f | 2343 | |
2344 | fsched-stalled-insns= | |
bfedbed1 | 2345 | Common RejectNegative Joined UInteger Optimization |
8fb42bbc | 2346 | -fsched-stalled-insns=<number> Set number of queued insns that can be prematurely scheduled. |
52c4b43f | 2347 | |
82a16202 | 2348 | ; sched_stalled_insns_dep controls how many recently scheduled cycles will |
2349 | ; be examined for a dependency on a stalled insn that is candidate for | |
2350 | ; premature removal from the queue of stalled insns into the ready list (has | |
2351 | ; an effect only if the flag 'sched_stalled_insns' is set). | |
52c4b43f | 2352 | fsched-stalled-insns-dep |
46f8e3b0 | 2353 | Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger |
8fb42bbc | 2354 | Set dependence distance checking in premature scheduling of queued insns. |
52c4b43f | 2355 | |
2356 | fsched-stalled-insns-dep= | |
bfedbed1 | 2357 | Common RejectNegative Joined UInteger Optimization |
8fb42bbc | 2358 | -fsched-stalled-insns-dep=<number> Set dependence distance checking in premature scheduling of queued insns. |
52c4b43f | 2359 | |
4d569386 | 2360 | fsched-group-heuristic |
2361 | Common Report Var(flag_sched_group_heuristic) Init(1) Optimization | |
8fb42bbc | 2362 | Enable the group heuristic in the scheduler. |
4d569386 | 2363 | |
2364 | fsched-critical-path-heuristic | |
2365 | Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization | |
8fb42bbc | 2366 | Enable the critical path heuristic in the scheduler. |
4d569386 | 2367 | |
2368 | fsched-spec-insn-heuristic | |
2369 | Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization | |
8fb42bbc | 2370 | Enable the speculative instruction heuristic in the scheduler. |
4d569386 | 2371 | |
4d569386 | 2372 | fsched-rank-heuristic |
2373 | Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization | |
8fb42bbc | 2374 | Enable the rank heuristic in the scheduler. |
4d569386 | 2375 | |
2376 | fsched-last-insn-heuristic | |
2377 | Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization | |
8fb42bbc | 2378 | Enable the last instruction heuristic in the scheduler. |
4d569386 | 2379 | |
2380 | fsched-dep-count-heuristic | |
2381 | Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization | |
8fb42bbc | 2382 | Enable the dependent count heuristic in the scheduler. |
4d569386 | 2383 | |
f2d0e9f1 | 2384 | fsection-anchors |
87c75316 | 2385 | Common Report Var(flag_section_anchors) Optimization |
8fb42bbc | 2386 | Access data in the same section from shared anchor points. |
f2d0e9f1 | 2387 | |
2b74c150 | 2388 | fsee |
3b0273a1 | 2389 | Common Ignore |
1bc99153 | 2390 | Does nothing. Preserved for backward compatibility. |
2b74c150 | 2391 | |
a5b022e7 | 2392 | fzee |
1d4227c3 | 2393 | Common Ignore |
2394 | Does nothing. Preserved for backward compatibility. | |
2395 | ||
2396 | free | |
2397 | Common Report Var(flag_ree) Init(0) | |
2398 | Turn on Redundant Extensions Elimination pass. | |
a5b022e7 | 2399 | |
5fd4bf3b | 2400 | fshow-column |
abf6a617 | 2401 | Common Report Var(flag_show_column) Init(1) |
8fb42bbc | 2402 | Show column numbers in diagnostics, when available. Default on. |
5fd4bf3b | 2403 | |
1f021f97 | 2404 | fshrink-wrap |
2405 | Common Report Var(flag_shrink_wrap) Optimization | |
2406 | Emit function prologues only before parts of the function that need it, | |
2407 | rather than at the top of the function. | |
2408 | ||
9be10499 | 2409 | fshrink-wrap-separate |
2410 | Common Report Var(flag_shrink_wrap_separate) Init(1) Optimization | |
2411 | Shrink-wrap parts of the prologue and epilogue separately. | |
2412 | ||
ecdb6d1a | 2413 | fsignaling-nans |
ecee1b29 | 2414 | Common Report Var(flag_signaling_nans) Optimization SetByCombined |
8fb42bbc | 2415 | Disable optimizations observable by IEEE signaling NaNs. |
ecdb6d1a | 2416 | |
893038cd | 2417 | fsigned-zeros |
ecee1b29 | 2418 | Common Report Var(flag_signed_zeros) Init(1) Optimization SetByCombined |
8fb42bbc | 2419 | Disable floating point optimizations that ignore the IEEE signedness of zero. |
893038cd | 2420 | |
ecdb6d1a | 2421 | fsingle-precision-constant |
87c75316 | 2422 | Common Report Var(flag_single_precision_constant) Optimization |
8fb42bbc | 2423 | Convert floating point constants to single precision constants. |
ecdb6d1a | 2424 | |
a9989fb4 | 2425 | fsplit-ivs-in-unroller |
87c75316 | 2426 | Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization |
8fb42bbc | 2427 | Split lifetimes of induction variables when loops are unrolled. |
a9989fb4 | 2428 | |
48b14f50 | 2429 | fsplit-stack |
2430 | Common Report Var(flag_split_stack) Init(-1) | |
8fb42bbc | 2431 | Generate discontiguous stack frames. |
48b14f50 | 2432 | |
1a6a0f2a | 2433 | fsplit-wide-types |
e8831472 | 2434 | Common Report Var(flag_split_wide_types) Optimization |
8fb42bbc | 2435 | Split wide types into independent registers. |
1a6a0f2a | 2436 | |
e657014d | 2437 | fsplit-wide-types-early |
2438 | Common Report Var(flag_split_wide_types_early) Optimization | |
2439 | Split wide types into independent registers earlier. | |
2440 | ||
7fc2f613 | 2441 | fssa-backprop |
2442 | Common Report Var(flag_ssa_backprop) Init(1) Optimization | |
2443 | Enable backward propagation of use properties at the SSA level. | |
2444 | ||
3dac50cc | 2445 | fssa-phiopt |
2446 | Common Report Var(flag_ssa_phiopt) Optimization | |
8fb42bbc | 2447 | Optimize conditional patterns using SSA PHI nodes. |
3dac50cc | 2448 | |
7c09c5f7 | 2449 | fstdarg-opt |
2450 | Common Report Var(flag_stdarg_opt) Init(1) Optimization | |
8fb42bbc | 2451 | Optimize amount of stdarg registers saved to stack at start of function. |
7c09c5f7 | 2452 | |
375bb675 | 2453 | fvariable-expansion-in-unroller |
87c75316 | 2454 | Common Report Var(flag_variable_expansion_in_unroller) Optimization |
8fb42bbc | 2455 | Apply variable expansion when loops are unrolled. |
375bb675 | 2456 | |
4852b829 | 2457 | fstack-check= |
74af142d | 2458 | Common Report RejectNegative Joined Optimization |
8fb42bbc | 2459 | -fstack-check=[no|generic|specific] Insert stack checking code into the program. |
4852b829 | 2460 | |
ecdb6d1a | 2461 | fstack-check |
67089c6b | 2462 | Common Alias(fstack-check=, specific, no) |
8fb42bbc | 2463 | Insert stack checking code into the program. Same as -fstack-check=specific. |
ecdb6d1a | 2464 | |
74af142d | 2465 | fstack-clash-protection |
2466 | Common Report Var(flag_stack_clash_protection) Optimization | |
2467 | Insert code to probe each page of stack space as it is allocated to protect | |
2468 | from stack-clash style attacks. | |
2469 | ||
1e06725a | 2470 | fstack-limit |
f0da0668 | 2471 | Common Var(common_deferred_options) Defer |
1e06725a | 2472 | |
941a4893 | 2473 | fstack-limit-register= |
f0da0668 | 2474 | Common RejectNegative Joined Var(common_deferred_options) Defer |
8fb42bbc | 2475 | -fstack-limit-register=<register> Trap if the stack goes past <register>. |
941a4893 | 2476 | |
2477 | fstack-limit-symbol= | |
f0da0668 | 2478 | Common RejectNegative Joined Var(common_deferred_options) Defer |
8fb42bbc | 2479 | -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>. |
941a4893 | 2480 | |
f1a0edff | 2481 | fstack-protector |
9ed0eb00 | 2482 | Common Report Var(flag_stack_protect, 1) Init(-1) Optimization |
8fb42bbc | 2483 | Use propolice as a stack protection method. |
f1a0edff | 2484 | |
2485 | fstack-protector-all | |
9ed0eb00 | 2486 | Common Report RejectNegative Var(flag_stack_protect, 2) Init(-1) Optimization |
8fb42bbc | 2487 | Use a stack protection method for every function. |
f1a0edff | 2488 | |
b156ec37 | 2489 | fstack-protector-strong |
9ed0eb00 | 2490 | Common Report RejectNegative Var(flag_stack_protect, 3) Init(-1) Optimization |
8fb42bbc | 2491 | Use a smart stack protection method for certain functions. |
b156ec37 | 2492 | |
947aa916 | 2493 | fstack-protector-explicit |
9ed0eb00 | 2494 | Common Report RejectNegative Var(flag_stack_protect, 4) Optimization |
8fb42bbc | 2495 | Use stack protection method only for functions with the stack_protect attribute. |
947aa916 | 2496 | |
990495a7 | 2497 | fstack-usage |
2498 | Common RejectNegative Var(flag_stack_usage) | |
8fb42bbc | 2499 | Output stack usage information on a per-function basis. |
990495a7 | 2500 | |
1e06725a | 2501 | fstrength-reduce |
3b0273a1 | 2502 | Common Ignore |
334ec2d8 | 2503 | Does nothing. Preserved for backward compatibility. |
1e06725a | 2504 | |
82a16202 | 2505 | ; Nonzero if we should do (language-dependent) alias analysis. |
2506 | ; Typically, this analysis will assume that expressions of certain | |
2507 | ; types do not alias expressions of certain other types. Only used | |
2508 | ; if alias analysis (in general) is enabled. | |
ecdb6d1a | 2509 | fstrict-aliasing |
87c75316 | 2510 | Common Report Var(flag_strict_aliasing) Optimization |
8fb42bbc | 2511 | Assume strict aliasing rules apply. |
ecdb6d1a | 2512 | |
981eb798 | 2513 | fstrict-overflow |
977361a1 | 2514 | Common Report |
2515 | Treat signed overflow as undefined. Negated as -fwrapv -fwrapv-pointer. | |
981eb798 | 2516 | |
d8219307 | 2517 | fsync-libcalls |
2518 | Common Report Var(flag_sync_libcalls) Init(1) | |
8fb42bbc | 2519 | Implement __atomic operations via libcalls to legacy __sync functions. |
d8219307 | 2520 | |
1e06725a | 2521 | fsyntax-only |
2e9da478 | 2522 | Common Report Var(flag_syntax_only) |
8fb42bbc | 2523 | Check for syntax errors, then stop. |
1e06725a | 2524 | |
ecdb6d1a | 2525 | ftest-coverage |
2e9da478 | 2526 | Common Report Var(flag_test_coverage) |
8fb42bbc | 2527 | Create data files needed by \"gcov\". |
ecdb6d1a | 2528 | |
1e06725a | 2529 | fthread-jumps |
87c75316 | 2530 | Common Report Var(flag_thread_jumps) Optimization |
8fb42bbc | 2531 | Perform jump threading optimizations. |
1e06725a | 2532 | |
ecdb6d1a | 2533 | ftime-report |
2e9da478 | 2534 | Common Report Var(time_report) |
8fb42bbc | 2535 | Report the time taken by each compiler pass. |
ecdb6d1a | 2536 | |
f649091c | 2537 | ftime-report-details |
2538 | Common Report Var(time_report_details) | |
2539 | Record times taken by sub-phases separately. | |
2540 | ||
941a4893 | 2541 | ftls-model= |
d62a5950 | 2542 | Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) |
8fb42bbc | 2543 | -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model. |
941a4893 | 2544 | |
d62a5950 | 2545 | Enum |
2546 | Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) | |
2547 | ||
2548 | EnumValue | |
2549 | Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) | |
2550 | ||
2551 | EnumValue | |
2552 | Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) | |
2553 | ||
2554 | EnumValue | |
2555 | Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) | |
2556 | ||
2557 | EnumValue | |
2558 | Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) | |
2559 | ||
56af936e | 2560 | ftoplevel-reorder |
bfedbed1 | 2561 | Common Report Var(flag_toplevel_reorder) Init(2) |
8fb42bbc | 2562 | Reorder top level functions, variables, and asms. |
56af936e | 2563 | |
1e06725a | 2564 | ftracer |
bfedbed1 | 2565 | Common Report Var(flag_tracer) Optimization |
8fb42bbc | 2566 | Perform superblock formation via tail duplication. |
1e06725a | 2567 | |
a27e3913 | 2568 | ftrampolines |
2569 | Common Report Var(flag_trampolines) Init(0) | |
2570 | For targets that normally need trampolines for nested functions, always | |
2571 | generate them instead of using descriptors. | |
2572 | ||
82a16202 | 2573 | ; Zero means that floating-point math operations cannot generate a |
2574 | ; (user-visible) trap. This is the case, for example, in nonstop | |
2575 | ; IEEE 754 arithmetic. | |
ecdb6d1a | 2576 | ftrapping-math |
ecee1b29 | 2577 | Common Report Var(flag_trapping_math) Init(1) Optimization SetByCombined |
8fb42bbc | 2578 | Assume floating-point operations can trap. |
ecdb6d1a | 2579 | |
2580 | ftrapv | |
87c75316 | 2581 | Common Report Var(flag_trapv) Optimization |
8fb42bbc | 2582 | Trap for signed overflow in addition, subtraction and multiplication. |
ecdb6d1a | 2583 | |
4ee9c684 | 2584 | ftree-ccp |
87c75316 | 2585 | Common Report Var(flag_tree_ccp) Optimization |
8fb42bbc | 2586 | Enable SSA-CCP optimization on trees. |
4ee9c684 | 2587 | |
b7e55469 | 2588 | ftree-bit-ccp |
2589 | Common Report Var(flag_tree_bit_ccp) Optimization | |
8fb42bbc | 2590 | Enable SSA-BIT-CCP optimization on trees. |
b7e55469 | 2591 | |
88dbf20f | 2592 | ftree-store-ccp |
3b0273a1 | 2593 | Common Ignore |
61207d43 | 2594 | Does nothing. Preserved for backward compatibility. |
88dbf20f | 2595 | |
4ee9c684 | 2596 | ftree-ch |
87c75316 | 2597 | Common Report Var(flag_tree_ch) Optimization |
8fb42bbc | 2598 | Enable loop header copying on trees. |
4ee9c684 | 2599 | |
4015e18c | 2600 | ftree-coalesce-inlined-vars |
94f92c36 | 2601 | Common Ignore RejectNegative |
2602 | Does nothing. Preserved for backward compatibility. | |
4015e18c | 2603 | |
2604 | ftree-coalesce-vars | |
94f92c36 | 2605 | Common Report Var(flag_tree_coalesce_vars) Optimization |
8fb42bbc | 2606 | Enable SSA coalescing of user variables. |
4015e18c | 2607 | |
4ee9c684 | 2608 | ftree-copyrename |
94f92c36 | 2609 | Common Ignore |
2610 | Does nothing. Preserved for backward compatibility. | |
4ee9c684 | 2611 | |
88dbf20f | 2612 | ftree-copy-prop |
87c75316 | 2613 | Common Report Var(flag_tree_copy_prop) Optimization |
8fb42bbc | 2614 | Enable copy propagation on trees. |
88dbf20f | 2615 | |
2616 | ftree-store-copy-prop | |
3b0273a1 | 2617 | Common Ignore |
578ef723 | 2618 | Does nothing. Preserved for backward compatibility. |
88dbf20f | 2619 | |
e6d0e152 | 2620 | ftree-cselim |
2621 | Common Report Var(flag_tree_cselim) Init(2) Optimization | |
8fb42bbc | 2622 | Transform condition stores into unconditional ones. |
e6d0e152 | 2623 | |
a347af29 | 2624 | ftree-switch-conversion |
2625 | Common Report Var(flag_tree_switch_conversion) Optimization | |
2626 | Perform conversions of switch initializations. | |
2627 | ||
4ee9c684 | 2628 | ftree-dce |
87c75316 | 2629 | Common Report Var(flag_tree_dce) Optimization |
8fb42bbc | 2630 | Enable SSA dead code elimination optimization on trees. |
4ee9c684 | 2631 | |
2632 | ftree-dominator-opts | |
87c75316 | 2633 | Common Report Var(flag_tree_dom) Optimization |
8fb42bbc | 2634 | Enable dominator optimizations. |
4ee9c684 | 2635 | |
51385f30 | 2636 | ftree-tail-merge |
2637 | Common Report Var(flag_tree_tail_merge) Optimization | |
8fb42bbc | 2638 | Enable tail merging on trees. |
51385f30 | 2639 | |
4ee9c684 | 2640 | ftree-dse |
87c75316 | 2641 | Common Report Var(flag_tree_dse) Optimization |
8fb42bbc | 2642 | Enable dead store elimination. |
4ee9c684 | 2643 | |
408c3c77 | 2644 | ftree-forwprop |
2645 | Common Report Var(flag_tree_forwprop) Init(1) Optimization | |
8fb42bbc | 2646 | Enable forward propagation on trees. |
408c3c77 | 2647 | |
591c2a30 | 2648 | ftree-fre |
87c75316 | 2649 | Common Report Var(flag_tree_fre) Optimization |
8fb42bbc | 2650 | Enable Full Redundancy Elimination (FRE) on trees. |
591c2a30 | 2651 | |
9efe50a4 | 2652 | foptimize-strlen |
2653 | Common Report Var(flag_optimize_strlen) Optimization | |
8fb42bbc | 2654 | Enable string length optimizations on trees. |
9efe50a4 | 2655 | |
30b10261 | 2656 | fisolate-erroneous-paths-dereference |
2657 | Common Report Var(flag_isolate_erroneous_paths_dereference) Optimization | |
3c770735 | 2658 | Detect paths that trigger erroneous or undefined behavior due to |
2659 | dereferencing a null pointer. Isolate those paths from the main control | |
2660 | flow and turn the statement with erroneous or undefined behavior into a trap. | |
30b10261 | 2661 | |
2662 | fisolate-erroneous-paths-attribute | |
2663 | Common Report Var(flag_isolate_erroneous_paths_attribute) Optimization | |
af987227 | 2664 | Detect paths that trigger erroneous or undefined behavior due to a null value |
3c770735 | 2665 | being used in a way forbidden by a returns_nonnull or nonnull |
30b10261 | 2666 | attribute. Isolate those paths from the main control flow and turn the |
8fb42bbc | 2667 | statement with erroneous or undefined behavior into a trap. |
db242b6d | 2668 | |
801c5610 | 2669 | ftree-loop-distribution |
2b945500 | 2670 | Common Report Var(flag_tree_loop_distribution) Optimization |
8fb42bbc | 2671 | Enable loop distribution on trees. |
801c5610 | 2672 | |
0acf3477 | 2673 | ftree-loop-distribute-patterns |
2674 | Common Report Var(flag_tree_loop_distribute_patterns) Optimization | |
8fb42bbc | 2675 | Enable loop distribution for patterns transformed into a library call. |
0acf3477 | 2676 | |
41b5cc78 | 2677 | ftree-loop-im |
87c75316 | 2678 | Common Report Var(flag_tree_loop_im) Init(1) Optimization |
8fb42bbc | 2679 | Enable loop invariant motion on trees. |
7d23383d | 2680 | |
60cfcb79 | 2681 | ftree-loop-linear |
4cc0f4e2 | 2682 | Common Alias(floop-nest-optimize) |
8fb42bbc | 2683 | Enable loop nest transforms. Same as -floop-nest-optimize. |
60cfcb79 | 2684 | |
41b5cc78 | 2685 | ftree-loop-ivcanon |
87c75316 | 2686 | Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization |
8fb42bbc | 2687 | Create canonical induction variables in loops. |
41b5cc78 | 2688 | |
dcb9eccb | 2689 | ftree-loop-optimize |
87c75316 | 2690 | Common Report Var(flag_tree_loop_optimize) Init(1) Optimization |
8fb42bbc | 2691 | Enable loop optimizations on tree level. |
dcb9eccb | 2692 | |
28c92cbb | 2693 | ftree-parallelize-loops= |
bfedbed1 | 2694 | Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) Optimization |
78adba87 | 2695 | -ftree-parallelize-loops=<number> Enable automatic parallelization of loops. |
28c92cbb | 2696 | |
408c3c77 | 2697 | ftree-phiprop |
2698 | Common Report Var(flag_tree_phiprop) Init(1) Optimization | |
2699 | Enable hoisting loads from conditional pointers. | |
2700 | ||
4ee9c684 | 2701 | ftree-pre |
87c75316 | 2702 | Common Report Var(flag_tree_pre) Optimization |
8fb42bbc | 2703 | Enable SSA-PRE optimization on trees. |
4ee9c684 | 2704 | |
0f9b384d | 2705 | ftree-partial-pre |
2706 | Common Report Var(flag_tree_partial_pre) Optimization | |
8fb42bbc | 2707 | In SSA-PRE optimization on trees, enable partial-partial redundancy elimination. |
0f9b384d | 2708 | |
408c3c77 | 2709 | ftree-pta |
1941e89d | 2710 | Common Report Var(flag_tree_pta) Optimization |
408c3c77 | 2711 | Perform function-local points-to analysis on trees. |
2712 | ||
621a93b1 | 2713 | ftree-reassoc |
2714 | Common Report Var(flag_tree_reassoc) Init(1) Optimization | |
8fb42bbc | 2715 | Enable reassociation on tree level. |
621a93b1 | 2716 | |
2be14d8b | 2717 | ftree-salias |
3b0273a1 | 2718 | Common Ignore |
70393469 | 2719 | Does nothing. Preserved for backward compatibility. |
2be14d8b | 2720 | |
5e733b02 | 2721 | ftree-sink |
87c75316 | 2722 | Common Report Var(flag_tree_sink) Optimization |
8fb42bbc | 2723 | Enable SSA code sinking on trees. |
5e733b02 | 2724 | |
6de100ef | 2725 | ftree-slsr |
2726 | Common Report Var(flag_tree_slsr) Optimization | |
8fb42bbc | 2727 | Perform straight-line strength reduction. |
6de100ef | 2728 | |
4ee9c684 | 2729 | ftree-sra |
87c75316 | 2730 | Common Report Var(flag_tree_sra) Optimization |
8fb42bbc | 2731 | Perform scalar replacement of aggregates. |
4ee9c684 | 2732 | |
2733 | ftree-ter | |
c17f64cc | 2734 | Common Report Var(flag_tree_ter) Optimization |
8fb42bbc | 2735 | Replace temporary expressions in the SSA->normal pass. |
4ee9c684 | 2736 | |
87c75316 | 2737 | ftree-lrs |
2738 | Common Report Var(flag_tree_live_range_split) Optimization | |
8fb42bbc | 2739 | Perform live range splitting during the SSA->normal pass. |
87c75316 | 2740 | |
88dbf20f | 2741 | ftree-vrp |
87c75316 | 2742 | Common Report Var(flag_tree_vrp) Init(0) Optimization |
8fb42bbc | 2743 | Perform Value Range Propagation on trees. |
88dbf20f | 2744 | |
b0e3fe96 | 2745 | fsplit-paths |
2746 | Common Report Var(flag_split_paths) Init(0) Optimization | |
2747 | Split paths leading to loop backedges. | |
2748 | ||
5ab2987f | 2749 | funconstrained-commons |
2750 | Common Var(flag_unconstrained_commons) Optimization | |
2751 | Assume common declarations may be overridden with ones with a larger | |
2752 | trailing array. | |
2753 | ||
1e06725a | 2754 | funit-at-a-time |
bfedbed1 | 2755 | Common Report Var(flag_unit_at_a_time) Init(1) |
8fb42bbc | 2756 | Compile whole compilation unit at a time. |
1e06725a | 2757 | |
2758 | funroll-loops | |
87c75316 | 2759 | Common Report Var(flag_unroll_loops) Optimization |
8fb42bbc | 2760 | Perform loop unrolling when iteration count is known. |
1e06725a | 2761 | |
2762 | funroll-all-loops | |
87c75316 | 2763 | Common Report Var(flag_unroll_all_loops) Optimization |
8fb42bbc | 2764 | Perform loop unrolling for all loops. |
1e06725a | 2765 | |
7e3cc681 | 2766 | ; Nonzero means that loop optimizer may assume that the induction variables |
2767 | ; that control loops do not overflow and that the loops with nontrivial | |
2768 | ; exit condition are not infinite | |
2769 | funsafe-loop-optimizations | |
9e609cf3 | 2770 | Common Ignore |
2771 | Does nothing. Preserved for backward compatibility. | |
7e3cc681 | 2772 | |
49d060d7 | 2773 | fassociative-math |
bfedbed1 | 2774 | Common Report Var(flag_associative_math) SetByCombined Optimization |
49d060d7 | 2775 | Allow optimization for floating-point arithmetic which may change the |
2776 | result of the operation due to rounding. | |
2777 | ||
2778 | freciprocal-math | |
bfedbed1 | 2779 | Common Report Var(flag_reciprocal_math) SetByCombined Optimization |
49d060d7 | 2780 | Same as -fassociative-math for expressions which include division. |
2781 | ||
82a16202 | 2782 | ; Nonzero means that unsafe floating-point math optimizations are allowed |
2783 | ; for the sake of speed. IEEE compliance is not guaranteed, and operations | |
2784 | ; are allowed to assume that their arguments and results are "normal" | |
2785 | ; (e.g., nonnegative for SQRT). | |
ecdb6d1a | 2786 | funsafe-math-optimizations |
ecee1b29 | 2787 | Common Report Var(flag_unsafe_math_optimizations) Optimization SetByCombined |
8fb42bbc | 2788 | Allow math optimizations that may violate IEEE or ISO standards. |
ecdb6d1a | 2789 | |
1e06725a | 2790 | funswitch-loops |
87c75316 | 2791 | Common Report Var(flag_unswitch_loops) Optimization |
8fb42bbc | 2792 | Perform loop unswitching. |
1e06725a | 2793 | |
92a2a716 | 2794 | fsplit-loops |
2795 | Common Report Var(flag_split_loops) Optimization | |
2796 | Perform loop splitting. | |
2797 | ||
9435b515 | 2798 | fversion-loops-for-strides |
2799 | Common Report Var(flag_version_loops_for_strides) Optimization | |
2800 | Version loops based on whether indices have a stride of one. | |
2801 | ||
ecdb6d1a | 2802 | funwind-tables |
87c75316 | 2803 | Common Report Var(flag_unwind_tables) Optimization |
8fb42bbc | 2804 | Just generate unwind tables for exception handling. |
ecdb6d1a | 2805 | |
99d5fe2d | 2806 | fuse-ld=bfd |
c75e4990 | 2807 | Common Driver Negative(fuse-ld=gold) |
8fb42bbc | 2808 | Use the bfd linker instead of the default linker. |
99d5fe2d | 2809 | |
2810 | fuse-ld=gold | |
c75e4990 | 2811 | Common Driver Negative(fuse-ld=bfd) |
8fb42bbc | 2812 | Use the gold linker instead of the default linker. |
99d5fe2d | 2813 | |
4eea76db | 2814 | fuse-ld=lld |
2815 | Common Driver Negative(fuse-ld=lld) | |
2816 | Use the lld LLVM linker instead of the default linker. | |
2817 | ||
386fbe6a | 2818 | fuse-linker-plugin |
cef15d47 | 2819 | Common Undocumented Var(flag_use_linker_plugin) |
386fbe6a | 2820 | |
0f8defe5 | 2821 | ; Positive if we should track variables, negative if we should run |
2822 | ; the var-tracking pass only to discard debug annotations, zero if | |
2823 | ; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it | |
2824 | ; will be set according to optimize, debug_info_level and debug_hooks | |
2825 | ; in process_options (). | |
5923a5e7 | 2826 | fvar-tracking |
05d8c5f8 | 2827 | Common Report Var(flag_var_tracking) Init(2) PerFunction |
8fb42bbc | 2828 | Perform variable tracking. |
5923a5e7 | 2829 | |
0f8defe5 | 2830 | ; Positive if we should track variables at assignments, negative if |
2831 | ; we should run the var-tracking pass only to discard debug | |
2832 | ; annotations. When flag_var_tracking_assignments == | |
2833 | ; AUTODETECT_VALUE it will be set according to flag_var_tracking. | |
9845d120 | 2834 | fvar-tracking-assignments |
05d8c5f8 | 2835 | Common Report Var(flag_var_tracking_assignments) Init(2) PerFunction |
8fb42bbc | 2836 | Perform variable tracking by annotating assignments. |
9845d120 | 2837 | |
0f8defe5 | 2838 | ; Nonzero if we should toggle flag_var_tracking_assignments after |
2839 | ; processing options and computing its default. */ | |
9845d120 | 2840 | fvar-tracking-assignments-toggle |
05d8c5f8 | 2841 | Common Report Var(flag_var_tracking_assignments_toggle) PerFunction |
8fb42bbc | 2842 | Toggle -fvar-tracking-assignments. |
9845d120 | 2843 | |
3e1cce93 | 2844 | ; Positive if we should track uninitialized variables, negative if |
2845 | ; we should run the var-tracking pass only to discard debug | |
2846 | ; annotations. When flag_var_tracking_uninit == AUTODETECT_VALUE it | |
2847 | ; will be set according to flag_var_tracking. | |
d53bb226 | 2848 | fvar-tracking-uninit |
05d8c5f8 | 2849 | Common Report Var(flag_var_tracking_uninit) PerFunction |
8fb42bbc | 2850 | Perform variable tracking and also tag variables that are uninitialized. |
d53bb226 | 2851 | |
52e94bf8 | 2852 | ; Alias to enable both -ftree-loop-vectorize and -ftree-slp-vectorize. |
c91e8223 | 2853 | ftree-vectorize |
52e94bf8 | 2854 | Common Report Optimization |
8fb42bbc | 2855 | Enable vectorization on trees. |
c91e8223 | 2856 | |
7bd765d4 | 2857 | ftree-vectorizer-verbose= |
e64c6e9c | 2858 | Common Joined RejectNegative Ignore |
2859 | Does nothing. Preserved for backward compatibility. | |
7bd765d4 | 2860 | |
043115ec | 2861 | ftree-loop-vectorize |
52e94bf8 | 2862 | Common Report Var(flag_tree_loop_vectorize) Optimization EnabledBy(ftree-vectorize) |
8fb42bbc | 2863 | Enable loop vectorization on trees. |
043115ec | 2864 | |
37545e54 | 2865 | ftree-slp-vectorize |
52e94bf8 | 2866 | Common Report Var(flag_tree_slp_vectorize) Optimization EnabledBy(ftree-vectorize) |
8fb42bbc | 2867 | Enable basic block vectorization (SLP) on trees. |
37545e54 | 2868 | |
1dbf9bd1 | 2869 | fvect-cost-model= |
bfedbed1 | 2870 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_vect_cost_model) Init(VECT_COST_MODEL_DEFAULT) Optimization |
6ac368bb | 2871 | -fvect-cost-model=[unlimited|dynamic|cheap] Specifies the cost model for vectorization. |
8fb42bbc | 2872 | |
3e398f5b | 2873 | fsimd-cost-model= |
bfedbed1 | 2874 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_simd_cost_model) Init(VECT_COST_MODEL_UNLIMITED) Optimization |
6ac368bb | 2875 | -fsimd-cost-model=[unlimited|dynamic|cheap] Specifies the vectorization cost model for code marked with a simd directive. |
3e398f5b | 2876 | |
1dbf9bd1 | 2877 | Enum |
2878 | Name(vect_cost_model) Type(enum vect_cost_model) UnknownError(unknown vectorizer cost model %qs) | |
2879 | ||
2880 | EnumValue | |
2881 | Enum(vect_cost_model) String(unlimited) Value(VECT_COST_MODEL_UNLIMITED) | |
2882 | ||
2883 | EnumValue | |
2884 | Enum(vect_cost_model) String(dynamic) Value(VECT_COST_MODEL_DYNAMIC) | |
2885 | ||
2886 | EnumValue | |
2887 | Enum(vect_cost_model) String(cheap) Value(VECT_COST_MODEL_CHEAP) | |
2888 | ||
867c03eb | 2889 | fvect-cost-model |
e1a93520 | 2890 | Common Alias(fvect-cost-model=,dynamic,unlimited) |
1dbf9bd1 | 2891 | Enables the dynamic vectorizer cost model. Preserved for backward compatibility. |
2892 | ||
25e3c2e8 | 2893 | ftree-vect-loop-version |
1dbf9bd1 | 2894 | Common Ignore |
2895 | Does nothing. Preserved for backward compatibility. | |
25e3c2e8 | 2896 | |
2a6e95ba | 2897 | ftree-scev-cprop |
e8831472 | 2898 | Common Report Var(flag_tree_scev_cprop) Init(1) Optimization |
2a6e95ba | 2899 | Enable copy propagation of scalar-evolution information. |
2900 | ||
82a16202 | 2901 | ; -fverbose-asm causes extra commentary information to be produced in |
2902 | ; the generated assembly code (to make it more readable). This option | |
2903 | ; is generally only of use to those who actually need to read the | |
2904 | ; generated assembly code (perhaps while debugging the compiler itself). | |
2905 | ; -fno-verbose-asm, the default, causes the extra information | |
2906 | ; to not be added and is useful when comparing two assembler files. | |
ecdb6d1a | 2907 | fverbose-asm |
2e9da478 | 2908 | Common Report Var(flag_verbose_asm) |
8fb42bbc | 2909 | Add extra commentary to assembler output. |
ecdb6d1a | 2910 | |
b212f378 | 2911 | fvisibility= |
d62a5950 | 2912 | Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) |
8fb42bbc | 2913 | -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility. |
b212f378 | 2914 | |
d62a5950 | 2915 | Enum |
2916 | Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) | |
2917 | ||
2918 | EnumValue | |
2919 | Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) | |
2920 | ||
2921 | EnumValue | |
2922 | Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) | |
2923 | ||
2924 | EnumValue | |
2925 | Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) | |
2926 | ||
2927 | EnumValue | |
2928 | Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) | |
b212f378 | 2929 | |
b710ec85 | 2930 | fvtable-verify= |
2931 | Common Joined RejectNegative Enum(vtv_priority) Var(flag_vtable_verify) Init(VTV_NO_PRIORITY) | |
2932 | Validate vtable pointers before using them. | |
2933 | ||
2934 | Enum | |
2935 | Name(vtv_priority) Type(enum vtv_priority) UnknownError(unknown vtable verify initialization priority %qs) | |
2936 | ||
2937 | EnumValue | |
2938 | Enum(vtv_priority) String(none) Value(VTV_NO_PRIORITY) | |
2939 | ||
2940 | EnumValue | |
2941 | Enum(vtv_priority) String(std) Value(VTV_STANDARD_PRIORITY) | |
2942 | ||
2943 | EnumValue | |
2944 | Enum(vtv_priority) String(preinit) Value(VTV_PREINIT_PRIORITY) | |
2945 | ||
2946 | fvtv-counts | |
2947 | Common Var(flag_vtv_counts) | |
2948 | Output vtable verification counters. | |
2949 | ||
2950 | fvtv-debug | |
2951 | Common Var(flag_vtv_debug) | |
2952 | Output vtable verification pointer sets information. | |
2953 | ||
1c6a7b8c | 2954 | fvpt |
87c75316 | 2955 | Common Report Var(flag_value_profile_transformations) Optimization |
8fb42bbc | 2956 | Use expression value profiles in optimizations. |
1c6a7b8c | 2957 | |
eeb4a70e | 2958 | fweb |
87c75316 | 2959 | Common Report Var(flag_web) Init(2) Optimization |
8fb42bbc | 2960 | Construct webs and split unrelated uses of single variable. |
eeb4a70e | 2961 | |
e6a23add | 2962 | ftree-builtin-call-dce |
2963 | Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization | |
8fb42bbc | 2964 | Enable conditional dead code elimination for builtin calls. |
e6a23add | 2965 | |
62eec3b4 | 2966 | fwhole-program |
bfedbed1 | 2967 | Common Report Var(flag_whole_program) Init(0) |
8fb42bbc | 2968 | Perform whole program optimizations. |
62eec3b4 | 2969 | |
977361a1 | 2970 | fwrapv-pointer |
2971 | Common Report Var(flag_wrapv_pointer) Optimization | |
2972 | Assume pointer overflow wraps around. | |
2973 | ||
ecdb6d1a | 2974 | fwrapv |
87c75316 | 2975 | Common Report Var(flag_wrapv) Optimization |
8fb42bbc | 2976 | Assume signed arithmetic overflow wraps around. |
ecdb6d1a | 2977 | |
ecdb6d1a | 2978 | fzero-initialized-in-bss |
2e9da478 | 2979 | Common Report Var(flag_zero_initialized_in_bss) Init(1) |
8fb42bbc | 2980 | Put zero initialized data in the bss section. |
ecdb6d1a | 2981 | |
6f2f567f | 2982 | g |
a1408eb3 | 2983 | Common Driver RejectNegative JoinedOrMissing |
8fb42bbc | 2984 | Generate debug information in default format. |
b0e56fb1 | 2985 | |
d85a7677 | 2986 | gas-loc-support |
2987 | Common Driver Var(dwarf2out_as_loc_support) Init(2) | |
f673492c | 2988 | Assume assembler support for (DWARF2+) .loc directives. |
d85a7677 | 2989 | |
2990 | gas-locview-support | |
2991 | Common Driver Var(dwarf2out_as_locview_support) Init(2) | |
f673492c | 2992 | Assume assembler support for view in (DWARF2+) .loc directives. |
d85a7677 | 2993 | |
f4140c4a | 2994 | gcoff |
0c46a085 | 2995 | Common Driver Deprecated |
f4140c4a | 2996 | Does nothing. Preserved for backward compatibility. |
2997 | ||
2998 | gcoff1 | |
0c46a085 | 2999 | Common Driver Deprecated |
f4140c4a | 3000 | Does nothing. Preserved for backward compatibility. |
3001 | ||
3002 | gcoff2 | |
0c46a085 | 3003 | Common Driver Deprecated |
f4140c4a | 3004 | Does nothing. Preserved for backward compatibility. |
3005 | ||
3006 | gcoff3 | |
0c46a085 | 3007 | Common Driver Deprecated |
f4140c4a | 3008 | Does nothing. Preserved for backward compatibility. |
3009 | ||
8afa52da | 3010 | gcolumn-info |
c61ffa85 | 3011 | Common Driver Var(debug_column_info,1) Init(1) |
8afa52da | 3012 | Record DW_AT_decl_column and DW_AT_call_column in DWARF. |
3013 | ||
8786b72c | 3014 | gdwarf |
14234f77 | 3015 | Common Driver JoinedOrMissing Negative(gdwarf-) |
8fb42bbc | 3016 | Generate debug information in default version of DWARF format. |
8786b72c | 3017 | |
3d3b9d5b | 3018 | gdwarf- |
14234f77 | 3019 | Common Driver Joined UInteger Var(dwarf_version) Init(4) Negative(gstabs) |
8fb42bbc | 3020 | Generate debug information in DWARF v2 (or later) format. |
b0e56fb1 | 3021 | |
3022 | ggdb | |
14234f77 | 3023 | Common Driver JoinedOrMissing |
8fb42bbc | 3024 | Generate debug information in default extended format. |
b0e56fb1 | 3025 | |
d85a7677 | 3026 | ginline-points |
3027 | Common Driver Var(debug_inline_points) Init(2) | |
f673492c | 3028 | Generate extended entry point information for inlined functions. |
d85a7677 | 3029 | |
3030 | ginternal-reset-location-views | |
3031 | Common Driver Var(debug_internal_reset_location_views) Init(2) | |
f673492c | 3032 | Compute locview reset points based on insn length estimates. |
d85a7677 | 3033 | |
a1408eb3 | 3034 | gno- |
3035 | RejectNegative Joined Undocumented | |
3036 | ; Catch the gno- prefix, so it doesn't backtrack to g<level>. | |
3037 | ||
7a99ccab | 3038 | gno-pubnames |
14234f77 | 3039 | Common Driver Negative(gpubnames) Var(debug_generate_pub_sections, 0) Init(-1) |
7a99ccab | 3040 | Don't generate DWARF pubnames and pubtypes sections. |
3041 | ||
3042 | gpubnames | |
14234f77 | 3043 | Common Driver Negative(ggnu-pubnames) Var(debug_generate_pub_sections, 1) |
7a99ccab | 3044 | Generate DWARF pubnames and pubtypes sections. |
3045 | ||
ea096d3d | 3046 | ggnu-pubnames |
14234f77 | 3047 | Common Driver Negative(gno-pubnames) Var(debug_generate_pub_sections, 2) |
ea096d3d | 3048 | Generate DWARF pubnames and pubtypes sections with GNU extensions. |
3049 | ||
f45370f8 | 3050 | grecord-gcc-switches |
a1408eb3 | 3051 | Common Driver Var(dwarf_record_gcc_switches) Init(1) |
f45370f8 | 3052 | Record gcc command line switches in DWARF DW_AT_producer. |
3053 | ||
b35329c7 | 3054 | gsplit-dwarf |
a1408eb3 | 3055 | Common Driver Var(dwarf_split_debug_info) Init(0) |
8fb42bbc | 3056 | Generate debug information in separate .dwo files. |
b35329c7 | 3057 | |
b0e56fb1 | 3058 | gstabs |
14234f77 | 3059 | Common Driver JoinedOrMissing Negative(gstabs+) |
8fb42bbc | 3060 | Generate debug information in STABS format. |
b0e56fb1 | 3061 | |
3062 | gstabs+ | |
14234f77 | 3063 | Common Driver JoinedOrMissing Negative(gvms) |
8fb42bbc | 3064 | Generate debug information in extended STABS format. |
b0e56fb1 | 3065 | |
aa2fd885 | 3066 | gstatement-frontiers |
3067 | Common Driver Var(debug_nonbind_markers_p) Init(2) | |
3068 | Emit progressive recommended breakpoint locations. | |
3069 | ||
c16b6d19 | 3070 | gstrict-dwarf |
a1408eb3 | 3071 | Common Driver Report Var(dwarf_strict) Init(0) |
8fb42bbc | 3072 | Don't emit DWARF additions beyond selected version. |
c16b6d19 | 3073 | |
f1e7f337 | 3074 | gdescribe-dies |
3075 | Common Driver Report Var(flag_describe_dies) Init(0) | |
3076 | Add description attributes to some DWARF DIEs that have no name attribute. | |
3077 | ||
71278019 | 3078 | gtoggle |
14234f77 | 3079 | Common Driver Report Var(flag_gtoggle) |
8fb42bbc | 3080 | Toggle debug information generation. |
71278019 | 3081 | |
7b0db09c | 3082 | gvariable-location-views |
3083 | Common Driver Var(debug_variable_location_views, 1) Init(2) | |
3084 | Augment variable location lists with progressive views. | |
3085 | ||
3086 | gvariable-location-views=incompat5 | |
3087 | Common Driver RejectNegative Var(debug_variable_location_views, -1) Init(2) | |
3088 | ||
b0e56fb1 | 3089 | gvms |
14234f77 | 3090 | Common Driver JoinedOrMissing Negative(gxcoff) |
8fb42bbc | 3091 | Generate debug information in VMS format. |
b0e56fb1 | 3092 | |
3093 | gxcoff | |
14234f77 | 3094 | Common Driver JoinedOrMissing Negative(gxcoff+) |
8fb42bbc | 3095 | Generate debug information in XCOFF format. |
b0e56fb1 | 3096 | |
3097 | gxcoff+ | |
4c52ff7a | 3098 | Common Driver JoinedOrMissing Negative(gdwarf) |
8fb42bbc | 3099 | Generate debug information in extended XCOFF format. |
6f2f567f | 3100 | |
4185c905 | 3101 | Enum |
3102 | Name(compressed_debug_sections) Type(int) | |
3103 | ||
3104 | ; Since -gz= is completely handled in specs, the values aren't used and we | |
3105 | ; assign arbitrary constants. | |
3106 | EnumValue | |
3107 | Enum(compressed_debug_sections) String(none) Value(0) | |
3108 | ||
3109 | EnumValue | |
3110 | Enum(compressed_debug_sections) String(zlib) Value(1) | |
3111 | ||
3112 | EnumValue | |
3113 | Enum(compressed_debug_sections) String(zlib-gnu) Value(2) | |
3114 | ||
3115 | gz | |
3116 | Common Driver | |
8fb42bbc | 3117 | Generate compressed debug sections. |
4185c905 | 3118 | |
3119 | gz= | |
a1408eb3 | 3120 | Common Driver RejectNegative Joined Enum(compressed_debug_sections) |
8fb42bbc | 3121 | -gz=<format> Generate compressed debug sections in format <format>. |
4185c905 | 3122 | |
f37ef985 | 3123 | h |
3124 | Driver Joined Separate | |
3125 | ||
19bc000d | 3126 | iplugindir= |
3127 | Common Joined Var(plugindir_string) Init(0) | |
8fb42bbc | 3128 | -iplugindir=<dir> Set <dir> to be the default plugin directory. |
19bc000d | 3129 | |
77adc39e | 3130 | imultiarch |
3131 | Common Joined Separate RejectDriver Var(imultiarch) Init(0) | |
8fb42bbc | 3132 | -imultiarch <dir> Set <dir> to be the multiarch include subdirectory. |
77adc39e | 3133 | |
e28aa114 | 3134 | l |
3135 | Driver Joined Separate | |
3136 | ||
3bfde2af | 3137 | n |
3138 | Driver | |
3139 | ||
e28aa114 | 3140 | no-canonical-prefixes |
3141 | Driver | |
3142 | ||
cb22f930 | 3143 | nodefaultlibs |
3144 | Driver | |
3145 | ||
286f96fe | 3146 | nostartfiles |
3147 | Driver | |
3148 | ||
0e4340b2 | 3149 | nolibc |
3150 | Driver | |
3151 | ||
cb22f930 | 3152 | nostdlib |
3153 | Driver | |
3154 | ||
e690b385 | 3155 | o |
6bd9d862 | 3156 | Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) |
8fb42bbc | 3157 | -o <file> Place output into <file>. |
e690b385 | 3158 | |
3159 | p | |
2e9da478 | 3160 | Common Var(profile_flag) |
8fb42bbc | 3161 | Enable function profiling. |
e690b385 | 3162 | |
e28aa114 | 3163 | pass-exit-codes |
3164 | Driver Var(pass_exit_codes) | |
3165 | ||
e690b385 | 3166 | pedantic |
29438999 | 3167 | Common Alias(Wpedantic) |
e690b385 | 3168 | |
3169 | pedantic-errors | |
6bd9d862 | 3170 | Common Var(flag_pedantic_errors) |
8fb42bbc | 3171 | Like -pedantic but issue them as errors. |
e690b385 | 3172 | |
cb22f930 | 3173 | pg |
3174 | Driver | |
3175 | ||
e28aa114 | 3176 | pipe |
3177 | Driver Var(use_pipes) | |
3178 | ||
3179 | print-file-name= | |
3180 | Driver JoinedOrMissing Var(print_file_name) | |
3181 | ||
3182 | print-libgcc-file-name | |
3183 | Driver | |
3184 | ||
3185 | print-multi-directory | |
3186 | Driver Var(print_multi_directory) | |
3187 | ||
3188 | print-multi-lib | |
3189 | Driver Var(print_multi_lib) | |
3190 | ||
3191 | print-multi-os-directory | |
3192 | Driver Var(print_multi_os_directory) | |
8fb42bbc | 3193 | |
77adc39e | 3194 | print-multiarch |
3195 | Driver Var(print_multiarch) | |
e28aa114 | 3196 | |
3197 | print-prog-name= | |
3198 | Driver JoinedOrMissing Var(print_prog_name) | |
3199 | ||
3200 | print-search-dirs | |
3201 | Driver Var(print_search_dirs) | |
3202 | ||
3203 | print-sysroot | |
3204 | Driver Var(print_sysroot) | |
3205 | ||
3206 | print-sysroot-headers-suffix | |
3207 | Driver Var(print_sysroot_headers_suffix) | |
3208 | ||
3272db82 | 3209 | quiet |
e28aa114 | 3210 | Common Var(quiet_flag) RejectDriver |
8fb42bbc | 3211 | Do not display functions compiled or elapsed time. |
3272db82 | 3212 | |
3bfde2af | 3213 | r |
3214 | Driver | |
3215 | ||
3216 | s | |
3217 | Driver | |
3218 | ||
e28aa114 | 3219 | save-temps |
3220 | Driver | |
3221 | ||
3222 | save-temps= | |
3223 | Driver Joined | |
3224 | ||
3bfde2af | 3225 | t |
3226 | Driver | |
3227 | ||
e28aa114 | 3228 | time |
3229 | Driver Var(report_times) | |
3230 | ||
3231 | time= | |
3232 | Driver JoinedOrMissing | |
3233 | ||
5789e05b | 3234 | u |
3235 | Driver Joined Separate | |
3236 | ||
4b2a05b6 | 3237 | undef |
3238 | Driver | |
3239 | ; C option, but driver must not handle as "-u ndef". | |
3240 | ||
e28aa114 | 3241 | v |
6bd9d862 | 3242 | Common Driver Var(verbose_flag) |
8fb42bbc | 3243 | Enable verbose output. |
e28aa114 | 3244 | |
e690b385 | 3245 | version |
e28aa114 | 3246 | Common Var(version_flag) RejectDriver |
8fb42bbc | 3247 | Display the compiler's version. |
e690b385 | 3248 | |
3249 | w | |
2e9da478 | 3250 | Common Var(inhibit_warnings) |
8fb42bbc | 3251 | Suppress warnings. |
e690b385 | 3252 | |
e28aa114 | 3253 | wrapper |
3254 | Driver Separate Var(wrapper_string) | |
3255 | ||
3256 | x | |
3257 | Driver Joined Separate | |
3258 | ||
794febf8 | 3259 | shared |
6d1ab23d | 3260 | Driver RejectNegative Negative(static-pie) |
8fb42bbc | 3261 | Create a shared library. |
794febf8 | 3262 | |
e28aa114 | 3263 | shared-libgcc |
3264 | Driver | |
3265 | ||
3266 | specs | |
67089c6b | 3267 | Driver Separate Alias(specs=) |
e28aa114 | 3268 | |
3269 | specs= | |
3270 | Driver Joined | |
3271 | ||
cb22f930 | 3272 | static |
3273 | Driver | |
3274 | ||
e28aa114 | 3275 | static-libgcc |
3276 | Driver | |
3277 | ||
3278 | static-libgfortran | |
3279 | Driver | |
3280 | ; Documented for Fortran, but always accepted by driver. | |
3281 | ||
3282 | static-libstdc++ | |
3283 | Driver | |
3284 | ||
e440a328 | 3285 | static-libgo |
3286 | Driver | |
3287 | ; Documented for Go, but always accepted by driver. | |
3288 | ||
6db5160a | 3289 | static-libasan |
3290 | Driver | |
3291 | ||
b077695d | 3292 | static-libtsan |
3293 | Driver | |
3294 | ||
f8ff4a27 | 3295 | static-liblsan |
3296 | Driver | |
3297 | ||
9e46467d | 3298 | static-libubsan |
3299 | Driver | |
3300 | ||
5789e05b | 3301 | symbolic |
3302 | Driver | |
3303 | ||
e9abca4f | 3304 | no-pie |
1412b935 | 3305 | Driver RejectNegative Negative(shared) |
6d1ab23d | 3306 | Don't create a dynamically linked position independent executable. |
e9abca4f | 3307 | |
3308 | pie | |
3309 | Driver RejectNegative Negative(no-pie) | |
6d1ab23d | 3310 | Create a dynamically linked position independent executable. |
3311 | ||
3312 | static-pie | |
3313 | Driver RejectNegative Negative(pie) | |
3314 | Create a static position independent executable. | |
794febf8 | 3315 | |
f37ef985 | 3316 | z |
3317 | Driver Joined Separate | |
3318 | ||
fcf56aaf | 3319 | fipa-ra |
3320 | Common Report Var(flag_ipa_ra) Optimization | |
8fb42bbc | 3321 | Use caller save register across calls if possible. |
2cc49064 | 3322 | |
3272db82 | 3323 | ; This comment is to ensure we retain the blank line above. |