1 | /* General-purpose hooks. |
2 | Copyright (C) 2002-2023 Free Software Foundation, Inc. |
3 | |
4 | This program is free software; you can redistribute it and/or modify it |
5 | under the terms of the GNU General Public License as published by the |
6 | Free Software Foundation; either version 3, or (at your option) any |
7 | later version. |
8 | |
9 | This program is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | GNU General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU General Public License |
15 | along with this program; see the file COPYING3. If not see |
16 | <http://www.gnu.org/licenses/>. |
17 | |
18 | In other words, you are welcome to use, share and improve this program. |
19 | You are forbidden to forbid anyone else to use, share and improve |
20 | what you give them. Help stamp out software-hoarding! */ |
21 | |
22 | /* This file contains generic hooks that can be used as defaults for |
23 | target or language-dependent hook initializers. */ |
24 | |
25 | #include "config.h" |
26 | #include "system.h" |
27 | #include "coretypes.h" |
28 | #include "tm.h" |
29 | #include "hooks.h" |
30 | |
31 | /* Generic hook that does absolutely zappo. */ |
32 | void |
33 | hook_void_void (void) |
34 | { |
35 | } |
36 | |
37 | /* Generic hook that takes no arguments and returns false. */ |
38 | bool |
39 | hook_bool_void_false (void) |
40 | { |
41 | return false; |
42 | } |
43 | |
44 | /* Generic hook that takes no arguments and returns true. */ |
45 | bool |
46 | hook_bool_void_true (void) |
47 | { |
48 | return true; |
49 | } |
50 | |
51 | /* Generic hook that takes (bool) and returns false. */ |
52 | bool |
53 | hook_bool_bool_false (bool) |
54 | { |
55 | return false; |
56 | } |
57 | |
58 | /* Generic hook that takes (bool, struct gcc_options *) and returns false. */ |
59 | bool |
60 | hook_bool_bool_gcc_optionsp_false (bool, struct gcc_options *) |
61 | { |
62 | return false; |
63 | } |
64 | |
65 | /* Generic hook that takes const int, const int) and returns true. */ |
66 | bool hook_bool_const_int_const_int_true (const int, const int) |
67 | { |
68 | return true; |
69 | } |
70 | |
71 | /* Generic hook that takes (machine_mode) and returns false. */ |
72 | bool |
73 | hook_bool_mode_false (machine_mode) |
74 | { |
75 | return false; |
76 | } |
77 | |
78 | /* Generic hook that takes (machine_mode) and returns true. */ |
79 | bool |
80 | hook_bool_mode_true (machine_mode) |
81 | { |
82 | return true; |
83 | } |
84 | |
85 | /* Generic hook that takes (machine_mode, machine_mode) and returns true. */ |
86 | bool |
87 | hook_bool_mode_mode_true (machine_mode, machine_mode) |
88 | { |
89 | return true; |
90 | } |
91 | |
92 | /* Generic hook that takes (machine_mode, const_rtx) and returns false. */ |
93 | bool |
94 | hook_bool_mode_const_rtx_false (machine_mode, const_rtx) |
95 | { |
96 | return false; |
97 | } |
98 | |
99 | /* Generic hook that takes (machine_mode, const_rtx) and returns true. */ |
100 | bool |
101 | hook_bool_mode_const_rtx_true (machine_mode, const_rtx) |
102 | { |
103 | return true; |
104 | } |
105 | |
106 | /* Generic hook that takes (machine_mode, rtx) and returns false. */ |
107 | bool |
108 | hook_bool_mode_rtx_false (machine_mode, rtx) |
109 | { |
110 | return false; |
111 | } |
112 | |
113 | /* Generic hook that takes (machine_mode, rtx) and returns true. */ |
114 | bool |
115 | hook_bool_mode_rtx_true (machine_mode, rtx) |
116 | { |
117 | return true; |
118 | } |
119 | |
120 | /* Generic hook that takes (const rtx_insn *, const rtx_insn *) and returns true. */ |
121 | bool |
122 | hook_bool_const_rtx_insn_const_rtx_insn_true (const rtx_insn *, |
123 | const rtx_insn *) |
124 | { |
125 | return true; |
126 | } |
127 | |
128 | /* Generic hook that takes (machine_mode, unsigned HOST_WIDE_INT) |
129 | and returns false. */ |
130 | bool |
131 | hook_bool_mode_uhwi_false (machine_mode, unsigned HOST_WIDE_INT) |
132 | { |
133 | return false; |
134 | } |
135 | |
136 | /* Generic hook that takes (poly_uint64, poly_uint64) and returns true. */ |
137 | bool |
138 | hook_bool_puint64_puint64_true (poly_uint64, poly_uint64) |
139 | { |
140 | return true; |
141 | } |
142 | |
143 | bool |
144 | hook_bool_uint_uint_mode_false (unsigned int, unsigned int, machine_mode) |
145 | { |
146 | return false; |
147 | } |
148 | |
149 | /* Generic hook that takes (unsigned int, machine_mode) and returns true. */ |
150 | bool |
151 | hook_bool_uint_mode_true (unsigned int, machine_mode) |
152 | { |
153 | return true; |
154 | } |
155 | |
156 | /* Generic hook that takes (FILE *, const char *) and does nothing. */ |
157 | void |
158 | hook_void_FILEptr_constcharptr (FILE *, const char *) |
159 | { |
160 | } |
161 | |
162 | /* Generic hook that takes (FILE *, const char *, constr_tree *) and does |
163 | nothing. */ |
164 | void |
165 | hook_void_FILEptr_constcharptr_const_tree (FILE *, const char *, const_tree) |
166 | { |
167 | } |
168 | |
169 | /* Generic hook that takes (FILE *, rtx) and returns false. */ |
170 | bool |
171 | hook_bool_FILEptr_rtx_false (FILE *, rtx) |
172 | { |
173 | return false; |
174 | } |
175 | |
176 | /* Generic hook that takes (gimple_stmt_iterator *) and returns |
177 | false. */ |
178 | bool |
179 | hook_bool_gsiptr_false (gimple_stmt_iterator *) |
180 | { |
181 | return false; |
182 | } |
183 | |
184 | /* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook. */ |
185 | bool |
186 | hook_bool_const_tree_hwi_hwi_const_tree_false (const_tree, HOST_WIDE_INT, |
187 | HOST_WIDE_INT, const_tree) |
188 | { |
189 | return false; |
190 | } |
191 | |
192 | bool |
193 | hook_bool_const_tree_hwi_hwi_const_tree_true (const_tree, HOST_WIDE_INT, |
194 | HOST_WIDE_INT, const_tree) |
195 | { |
196 | return true; |
197 | } |
198 | |
199 | bool |
200 | default_can_output_mi_thunk_no_vcall (const_tree, HOST_WIDE_INT, |
201 | HOST_WIDE_INT c, const_tree) |
202 | { |
203 | return c == 0; |
204 | } |
205 | |
206 | int |
207 | hook_int_uint_mode_1 (unsigned int, machine_mode) |
208 | { |
209 | return 1; |
210 | } |
211 | |
212 | int |
213 | hook_int_const_tree_0 (const_tree) |
214 | { |
215 | return 0; |
216 | } |
217 | |
218 | /* ??? Used for comp_type_attributes, which ought to return bool. */ |
219 | int |
220 | hook_int_const_tree_const_tree_1 (const_tree, const_tree) |
221 | { |
222 | return 1; |
223 | } |
224 | |
225 | int |
226 | hook_int_rtx_0 (rtx) |
227 | { |
228 | return 0; |
229 | } |
230 | |
231 | int |
232 | hook_int_rtx_1 (rtx) |
233 | { |
234 | return 1; |
235 | } |
236 | |
237 | int |
238 | hook_int_rtx_insn_0 (rtx_insn *) |
239 | { |
240 | return 0; |
241 | } |
242 | |
243 | int |
244 | hook_int_rtx_insn_unreachable (rtx_insn *) |
245 | { |
246 | gcc_unreachable (); |
247 | } |
248 | |
249 | int |
250 | hook_int_rtx_bool_0 (rtx, bool) |
251 | { |
252 | return 0; |
253 | } |
254 | |
255 | int |
256 | hook_int_rtx_mode_as_bool_0 (rtx, machine_mode, addr_space_t, bool) |
257 | { |
258 | return 0; |
259 | } |
260 | |
261 | unsigned int |
262 | hook_uint_void_0 (void) |
263 | { |
264 | return 0; |
265 | } |
266 | |
267 | HOST_WIDE_INT |
268 | hook_hwi_void_0 (void) |
269 | { |
270 | return 0; |
271 | } |
272 | |
273 | void |
274 | hook_void_tree (tree) |
275 | { |
276 | } |
277 | |
278 | void |
279 | hook_void_FILEptr_tree (FILE *, tree) |
280 | { |
281 | } |
282 | |
283 | void |
284 | hook_void_rtx_tree (rtx, tree) |
285 | { |
286 | } |
287 | |
288 | void |
289 | hook_void_constcharptr (const char *) |
290 | { |
291 | } |
292 | |
293 | void |
294 | hook_void_tree_treeptr (tree, tree *) |
295 | { |
296 | } |
297 | |
298 | void |
299 | hook_void_int_int (int, int) |
300 | { |
301 | } |
302 | |
303 | bool |
304 | hook_bool_tree_false (tree) |
305 | { |
306 | return false; |
307 | } |
308 | |
309 | bool |
310 | hook_bool_const_tree_false (const_tree) |
311 | { |
312 | return false; |
313 | } |
314 | |
315 | bool |
316 | hook_bool_const_tree_const_tree_true (const_tree, const_tree) |
317 | { |
318 | return true; |
319 | } |
320 | |
321 | bool |
322 | hook_bool_tree_true (tree) |
323 | { |
324 | return true; |
325 | } |
326 | |
327 | bool |
328 | hook_bool_const_tree_true (const_tree) |
329 | { |
330 | return true; |
331 | } |
332 | |
333 | bool |
334 | hook_bool_tree_tree_false (tree, tree) |
335 | { |
336 | return false; |
337 | } |
338 | |
339 | bool |
340 | hook_bool_tree_tree_true (tree, tree) |
341 | { |
342 | return true; |
343 | } |
344 | |
345 | bool |
346 | hook_bool_tree_bool_false (tree, bool) |
347 | { |
348 | return false; |
349 | } |
350 | |
351 | bool |
352 | hook_bool_rtx_insn_true (rtx_insn *) |
353 | { |
354 | return true; |
355 | } |
356 | |
357 | bool |
358 | hook_bool_rtx_false (rtx) |
359 | { |
360 | return false; |
361 | } |
362 | |
363 | bool |
364 | hook_bool_uintp_uintp_false (unsigned int *, unsigned int *) |
365 | { |
366 | return false; |
367 | } |
368 | |
369 | bool |
370 | hook_bool_rtx_mode_int_int_intp_bool_false (rtx, machine_mode, int, int, |
371 | int *, bool) |
372 | { |
373 | return false; |
374 | } |
375 | |
376 | bool |
377 | hook_bool_wint_wint_uint_bool_true (const widest_int &, const widest_int &, |
378 | unsigned int, bool) |
379 | { |
380 | return true; |
381 | } |
382 | |
383 | /* Generic hook that takes an rtx and returns it. */ |
384 | rtx |
385 | hook_rtx_rtx_identity (rtx x) |
386 | { |
387 | return x; |
388 | } |
389 | |
390 | /* Generic hook that takes an rtx and returns NULL_RTX. */ |
391 | rtx |
392 | hook_rtx_rtx_null (rtx) |
393 | { |
394 | return NULL; |
395 | } |
396 | |
397 | /* Generic hook that takes a tree and an int and returns NULL_RTX. */ |
398 | rtx |
399 | hook_rtx_tree_int_null (tree, int) |
400 | { |
401 | return NULL; |
402 | } |
403 | |
404 | /* Generic hook that takes a machine mode and returns an unsigned int 0. */ |
405 | unsigned int |
406 | hook_uint_mode_0 (machine_mode) |
407 | { |
408 | return 0; |
409 | } |
410 | |
411 | /* Generic hook that takes no arguments and returns a NULL const string. */ |
412 | const char * |
413 | hook_constcharptr_void_null (void) |
414 | { |
415 | return NULL; |
416 | } |
417 | |
418 | /* Generic hook that takes no arguments and returns a NULL string. */ |
419 | char * |
420 | hook_charptr_void_null (void) |
421 | { |
422 | return NULL; |
423 | } |
424 | |
425 | /* Generic hook that takes a tree and returns a NULL string. */ |
426 | const char * |
427 | hook_constcharptr_const_tree_null (const_tree) |
428 | { |
429 | return NULL; |
430 | } |
431 | |
432 | tree |
433 | hook_tree_tree_int_treep_bool_null (tree, int, tree *, bool) |
434 | { |
435 | return NULL; |
436 | } |
437 | |
438 | tree |
439 | hook_tree_tree_bool_null (tree, bool) |
440 | { |
441 | return NULL; |
442 | } |
443 | |
444 | tree |
445 | hook_tree_tree_tree_null (tree, tree) |
446 | { |
447 | return NULL; |
448 | } |
449 | |
450 | tree |
451 | hook_tree_tree_tree_tree_null (tree, tree, tree) |
452 | { |
453 | return NULL; |
454 | } |
455 | |
456 | tree |
457 | hook_tree_treeptr_tree_tree_int_boolptr_null (tree *, tree, tree, int, bool *) |
458 | { |
459 | return NULL; |
460 | } |
461 | |
462 | /* Generic hook that takes an rtx_insn *and returns a NULL string. */ |
463 | const char * |
464 | hook_constcharptr_const_rtx_insn_null (const rtx_insn *) |
465 | { |
466 | return NULL; |
467 | } |
468 | |
469 | const char * |
470 | hook_constcharptr_const_tree_const_tree_null (const_tree, const_tree) |
471 | { |
472 | return NULL; |
473 | } |
474 | |
475 | const char * |
476 | hook_constcharptr_int_const_tree_null (int, const_tree) |
477 | { |
478 | return NULL; |
479 | } |
480 | |
481 | const char * |
482 | hook_constcharptr_int_const_tree_const_tree_null (int, const_tree, const_tree) |
483 | { |
484 | return NULL; |
485 | } |
486 | |
487 | /* Generic hook that takes a const_tree and returns NULL_TREE. */ |
488 | tree |
489 | hook_tree_const_tree_null (const_tree) |
490 | { |
491 | return NULL; |
492 | } |
493 | |
494 | /* Generic hook that takes no arguments and returns a NULL_TREE. */ |
495 | tree |
496 | hook_tree_void_null (void) |
497 | { |
498 | return NULL; |
499 | } |
500 | |
501 | /* Generic hook that takes a rtx_insn * and an int and returns a bool. */ |
502 | |
503 | bool |
504 | hook_bool_rtx_insn_int_false (rtx_insn *, int) |
505 | { |
506 | return false; |
507 | } |
508 | |
509 | /* Generic hook that takes a rtx_insn * and an int and returns void. */ |
510 | |
511 | void |
512 | hook_void_rtx_insn_int (rtx_insn *, int) |
513 | { |
514 | } |
515 | |
516 | /* Generic hook that takes a struct gcc_options * and returns void. */ |
517 | |
518 | void |
519 | hook_void_gcc_optionsp (struct gcc_options *) |
520 | { |
521 | } |
522 | |
523 | /* Generic hook that takes an unsigned int and returns true. */ |
524 | |
525 | bool |
526 | hook_bool_uint_true (unsigned int) |
527 | { |
528 | return true; |
529 | } |
530 | |
531 | /* Generic hook that takes an unsigned int, an unsigned int pointer and |
532 | returns false. */ |
533 | |
534 | bool |
535 | hook_bool_uint_uintp_false (unsigned int, unsigned int *) |
536 | { |
537 | return false; |
538 | } |
539 | |
540 | /* Generic hook that takes a register class and returns false. */ |
541 | bool |
542 | hook_bool_reg_class_t_false (reg_class_t regclass ATTRIBUTE_UNUSED) |
543 | { |
544 | return false; |
545 | } |
546 | |
547 | /* Generic hook that takes 2 machine_modes and a register class and |
548 | returns true. */ |
549 | bool |
550 | hook_bool_mode_mode_reg_class_t_true (machine_mode, machine_mode, reg_class_t) |
551 | { |
552 | return true; |
553 | } |
554 | |
555 | /* Generic hook that takes a machine_mode and 2 register classes |
556 | and returns false. */ |
557 | bool |
558 | hook_bool_mode_reg_class_t_reg_class_t_false (machine_mode, reg_class_t, |
559 | reg_class_t) |
560 | { |
561 | return false; |
562 | } |
563 | |
564 | /* Generic hook that takes a mode and an unsigned HOST_WIDE_INT and |
565 | returns no mode. */ |
566 | |
567 | opt_machine_mode |
568 | hook_optmode_mode_uhwi_none (machine_mode, unsigned HOST_WIDE_INT) |
569 | { |
570 | return opt_machine_mode (); |
571 | } |
572 | |