1 /* General-purpose hooks.
2 Copyright (C) 2002-2018 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
hook_void_void(void)33 hook_void_void (void)
34 {
35 }
36
37 /* Generic hook that takes no arguments and returns false. */
38 bool
hook_bool_void_false(void)39 hook_bool_void_false (void)
40 {
41 return false;
42 }
43
44 /* Generic hook that takes no arguments and returns true. */
45 bool
hook_bool_void_true(void)46 hook_bool_void_true (void)
47 {
48 return true;
49 }
50
51 /* Generic hook that takes (bool) and returns false. */
52 bool
hook_bool_bool_false(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
hook_bool_bool_gcc_optionsp_false(bool,struct gcc_options *)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. */
hook_bool_const_int_const_int_true(const int,const int)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
hook_bool_mode_false(machine_mode)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
hook_bool_mode_true(machine_mode)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
hook_bool_mode_mode_true(machine_mode,machine_mode)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
hook_bool_mode_const_rtx_false(machine_mode,const_rtx)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
hook_bool_mode_const_rtx_true(machine_mode,const_rtx)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
hook_bool_mode_rtx_false(machine_mode,rtx)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
hook_bool_mode_rtx_true(machine_mode,rtx)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
hook_bool_const_rtx_insn_const_rtx_insn_true(const rtx_insn *,const rtx_insn *)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
hook_bool_mode_uhwi_false(machine_mode,unsigned HOST_WIDE_INT)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
hook_bool_puint64_puint64_true(poly_uint64,poly_uint64)138 hook_bool_puint64_puint64_true (poly_uint64, poly_uint64)
139 {
140 return true;
141 }
142
143 /* Generic hook that takes (unsigned int, machine_mode) and returns false. */
144 bool
hook_bool_uint_mode_false(unsigned int,machine_mode)145 hook_bool_uint_mode_false (unsigned int, machine_mode)
146 {
147 return false;
148 }
149
150 /* Generic hook that takes (unsigned int, machine_mode) and returns true. */
151 bool
hook_bool_uint_mode_true(unsigned int,machine_mode)152 hook_bool_uint_mode_true (unsigned int, machine_mode)
153 {
154 return true;
155 }
156
157 /* Generic hook that takes (FILE *, const char *) and does nothing. */
158 void
hook_void_FILEptr_constcharptr(FILE *,const char *)159 hook_void_FILEptr_constcharptr (FILE *, const char *)
160 {
161 }
162
163 /* Generic hook that takes (FILE *, const char *, constr_tree *) and does
164 nothing. */
165 void
hook_void_FILEptr_constcharptr_const_tree(FILE *,const char *,const_tree)166 hook_void_FILEptr_constcharptr_const_tree (FILE *, const char *, const_tree)
167 {
168 }
169
170 /* Generic hook that takes (FILE *, rtx) and returns false. */
171 bool
hook_bool_FILEptr_rtx_false(FILE *,rtx)172 hook_bool_FILEptr_rtx_false (FILE *, rtx)
173 {
174 return false;
175 }
176
177 /* Generic hook that takes (gimple_stmt_iterator *) and returns
178 false. */
179 bool
hook_bool_gsiptr_false(gimple_stmt_iterator *)180 hook_bool_gsiptr_false (gimple_stmt_iterator *)
181 {
182 return false;
183 }
184
185 /* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook. */
186 bool
hook_bool_const_tree_hwi_hwi_const_tree_false(const_tree,HOST_WIDE_INT,HOST_WIDE_INT,const_tree)187 hook_bool_const_tree_hwi_hwi_const_tree_false (const_tree, HOST_WIDE_INT,
188 HOST_WIDE_INT, const_tree)
189 {
190 return false;
191 }
192
193 bool
hook_bool_const_tree_hwi_hwi_const_tree_true(const_tree,HOST_WIDE_INT,HOST_WIDE_INT,const_tree)194 hook_bool_const_tree_hwi_hwi_const_tree_true (const_tree, HOST_WIDE_INT,
195 HOST_WIDE_INT, const_tree)
196 {
197 return true;
198 }
199
200 bool
default_can_output_mi_thunk_no_vcall(const_tree,HOST_WIDE_INT,HOST_WIDE_INT c,const_tree)201 default_can_output_mi_thunk_no_vcall (const_tree, HOST_WIDE_INT,
202 HOST_WIDE_INT c, const_tree)
203 {
204 return c == 0;
205 }
206
207 int
hook_int_uint_mode_1(unsigned int,machine_mode)208 hook_int_uint_mode_1 (unsigned int, machine_mode)
209 {
210 return 1;
211 }
212
213 int
hook_int_const_tree_0(const_tree)214 hook_int_const_tree_0 (const_tree)
215 {
216 return 0;
217 }
218
219 /* ??? Used for comp_type_attributes, which ought to return bool. */
220 int
hook_int_const_tree_const_tree_1(const_tree,const_tree)221 hook_int_const_tree_const_tree_1 (const_tree, const_tree)
222 {
223 return 1;
224 }
225
226 int
hook_int_rtx_0(rtx)227 hook_int_rtx_0 (rtx)
228 {
229 return 0;
230 }
231
232 int
hook_int_rtx_1(rtx)233 hook_int_rtx_1 (rtx)
234 {
235 return 1;
236 }
237
238 int
hook_int_rtx_insn_0(rtx_insn *)239 hook_int_rtx_insn_0 (rtx_insn *)
240 {
241 return 0;
242 }
243
244 int
hook_int_rtx_insn_unreachable(rtx_insn *)245 hook_int_rtx_insn_unreachable (rtx_insn *)
246 {
247 gcc_unreachable ();
248 }
249
250 int
hook_int_rtx_bool_0(rtx,bool)251 hook_int_rtx_bool_0 (rtx, bool)
252 {
253 return 0;
254 }
255
256 int
hook_int_rtx_mode_as_bool_0(rtx,machine_mode,addr_space_t,bool)257 hook_int_rtx_mode_as_bool_0 (rtx, machine_mode, addr_space_t, bool)
258 {
259 return 0;
260 }
261
262 unsigned int
hook_uint_void_0(void)263 hook_uint_void_0 (void)
264 {
265 return 0;
266 }
267
268 HOST_WIDE_INT
hook_hwi_void_0(void)269 hook_hwi_void_0 (void)
270 {
271 return 0;
272 }
273
274 void
hook_void_tree(tree)275 hook_void_tree (tree)
276 {
277 }
278
279 void
hook_void_rtx_tree(rtx,tree)280 hook_void_rtx_tree (rtx, tree)
281 {
282 }
283
284 void
hook_void_constcharptr(const char *)285 hook_void_constcharptr (const char *)
286 {
287 }
288
289 void
hook_void_tree_treeptr(tree,tree *)290 hook_void_tree_treeptr (tree, tree *)
291 {
292 }
293
294 void
hook_void_int_int(int,int)295 hook_void_int_int (int, int)
296 {
297 }
298
299 bool
hook_bool_tree_false(tree)300 hook_bool_tree_false (tree)
301 {
302 return false;
303 }
304
305 bool
hook_bool_const_tree_false(const_tree)306 hook_bool_const_tree_false (const_tree)
307 {
308 return false;
309 }
310
311 bool
hook_bool_tree_true(tree)312 hook_bool_tree_true (tree)
313 {
314 return true;
315 }
316
317 bool
hook_bool_const_tree_true(const_tree)318 hook_bool_const_tree_true (const_tree)
319 {
320 return true;
321 }
322
323 bool
hook_bool_tree_tree_false(tree,tree)324 hook_bool_tree_tree_false (tree, tree)
325 {
326 return false;
327 }
328
329 bool
hook_bool_tree_tree_true(tree,tree)330 hook_bool_tree_tree_true (tree, tree)
331 {
332 return true;
333 }
334
335 bool
hook_bool_tree_bool_false(tree,bool)336 hook_bool_tree_bool_false (tree, bool)
337 {
338 return false;
339 }
340
341 bool
hook_bool_rtx_insn_true(rtx_insn *)342 hook_bool_rtx_insn_true (rtx_insn *)
343 {
344 return true;
345 }
346
347 bool
hook_bool_rtx_false(rtx)348 hook_bool_rtx_false (rtx)
349 {
350 return false;
351 }
352
353 bool
hook_bool_uintp_uintp_false(unsigned int *,unsigned int *)354 hook_bool_uintp_uintp_false (unsigned int *, unsigned int *)
355 {
356 return false;
357 }
358
359 bool
hook_bool_rtx_mode_int_int_intp_bool_false(rtx,machine_mode,int,int,int *,bool)360 hook_bool_rtx_mode_int_int_intp_bool_false (rtx, machine_mode, int, int,
361 int *, bool)
362 {
363 return false;
364 }
365
366 bool
hook_bool_wint_wint_uint_bool_true(const widest_int &,const widest_int &,unsigned int,bool)367 hook_bool_wint_wint_uint_bool_true (const widest_int &, const widest_int &,
368 unsigned int, bool)
369 {
370 return true;
371 }
372
373 /* Generic hook that takes an rtx and returns it. */
374 rtx
hook_rtx_rtx_identity(rtx x)375 hook_rtx_rtx_identity (rtx x)
376 {
377 return x;
378 }
379
380 /* Generic hook that takes an rtx and returns NULL_RTX. */
381 rtx
hook_rtx_rtx_null(rtx)382 hook_rtx_rtx_null (rtx)
383 {
384 return NULL;
385 }
386
387 /* Generic hook that takes a tree and an int and returns NULL_RTX. */
388 rtx
hook_rtx_tree_int_null(tree,int)389 hook_rtx_tree_int_null (tree, int)
390 {
391 return NULL;
392 }
393
394 /* Generic hook that takes a machine mode and returns an unsigned int 0. */
395 unsigned int
hook_uint_mode_0(machine_mode)396 hook_uint_mode_0 (machine_mode)
397 {
398 return 0;
399 }
400
401 /* Generic hook that takes no arguments and returns a NULL const string. */
402 const char *
hook_constcharptr_void_null(void)403 hook_constcharptr_void_null (void)
404 {
405 return NULL;
406 }
407
408 /* Generic hook that takes no arguments and returns a NULL string. */
409 char *
hook_charptr_void_null(void)410 hook_charptr_void_null (void)
411 {
412 return NULL;
413 }
414
415 /* Generic hook that takes a tree and returns a NULL string. */
416 const char *
hook_constcharptr_const_tree_null(const_tree)417 hook_constcharptr_const_tree_null (const_tree)
418 {
419 return NULL;
420 }
421
422 tree
hook_tree_tree_int_treep_bool_null(tree,int,tree *,bool)423 hook_tree_tree_int_treep_bool_null (tree, int, tree *, bool)
424 {
425 return NULL;
426 }
427
428 tree
hook_tree_tree_tree_null(tree,tree)429 hook_tree_tree_tree_null (tree, tree)
430 {
431 return NULL;
432 }
433
434 tree
hook_tree_tree_tree_tree_null(tree,tree,tree)435 hook_tree_tree_tree_tree_null (tree, tree, tree)
436 {
437 return NULL;
438 }
439
440 /* Generic hook that takes an rtx_insn *and returns a NULL string. */
441 const char *
hook_constcharptr_const_rtx_insn_null(const rtx_insn *)442 hook_constcharptr_const_rtx_insn_null (const rtx_insn *)
443 {
444 return NULL;
445 }
446
447 const char *
hook_constcharptr_const_tree_const_tree_null(const_tree,const_tree)448 hook_constcharptr_const_tree_const_tree_null (const_tree, const_tree)
449 {
450 return NULL;
451 }
452
453 const char *
hook_constcharptr_int_const_tree_null(int,const_tree)454 hook_constcharptr_int_const_tree_null (int, const_tree)
455 {
456 return NULL;
457 }
458
459 const char *
hook_constcharptr_int_const_tree_const_tree_null(int,const_tree,const_tree)460 hook_constcharptr_int_const_tree_const_tree_null (int, const_tree, const_tree)
461 {
462 return NULL;
463 }
464
465 /* Generic hook that takes a const_tree and returns NULL_TREE. */
466 tree
hook_tree_const_tree_null(const_tree)467 hook_tree_const_tree_null (const_tree)
468 {
469 return NULL;
470 }
471
472 /* Generic hook that takes no arguments and returns a NULL_TREE. */
473 tree
hook_tree_void_null(void)474 hook_tree_void_null (void)
475 {
476 return NULL;
477 }
478
479 /* Generic hook that takes a rtx_insn * and an int and returns a bool. */
480
481 bool
hook_bool_rtx_insn_int_false(rtx_insn *,int)482 hook_bool_rtx_insn_int_false (rtx_insn *, int)
483 {
484 return false;
485 }
486
487 /* Generic hook that takes a rtx_insn * and an int and returns void. */
488
489 void
hook_void_rtx_insn_int(rtx_insn *,int)490 hook_void_rtx_insn_int (rtx_insn *, int)
491 {
492 }
493
494 /* Generic hook that takes a struct gcc_options * and returns void. */
495
496 void
hook_void_gcc_optionsp(struct gcc_options *)497 hook_void_gcc_optionsp (struct gcc_options *)
498 {
499 }
500
501 /* Generic hook that takes an unsigned int, an unsigned int pointer and
502 returns false. */
503
504 bool
hook_bool_uint_uintp_false(unsigned int,unsigned int *)505 hook_bool_uint_uintp_false (unsigned int, unsigned int *)
506 {
507 return false;
508 }
509
510 /* Generic hook that takes a register class and returns false. */
511 bool
hook_bool_reg_class_t_false(reg_class_t regclass ATTRIBUTE_UNUSED)512 hook_bool_reg_class_t_false (reg_class_t regclass ATTRIBUTE_UNUSED)
513 {
514 return false;
515 }
516
517 /* Generic hook that takes 2 machine_modes and a register class and
518 returns true. */
519 bool
hook_bool_mode_mode_reg_class_t_true(machine_mode,machine_mode,reg_class_t)520 hook_bool_mode_mode_reg_class_t_true (machine_mode, machine_mode, reg_class_t)
521 {
522 return true;
523 }
524
525 /* Generic hook that takes a machine_mode and 2 register classes
526 and returns false. */
527 bool
hook_bool_mode_reg_class_t_reg_class_t_false(machine_mode,reg_class_t,reg_class_t)528 hook_bool_mode_reg_class_t_reg_class_t_false (machine_mode, reg_class_t,
529 reg_class_t)
530 {
531 return false;
532 }
533
534 /* Generic hook that takes a mode and an unsigned HOST_WIDE_INT and
535 returns no mode. */
536
537 opt_machine_mode
hook_optmode_mode_uhwi_none(machine_mode,unsigned HOST_WIDE_INT)538 hook_optmode_mode_uhwi_none (machine_mode, unsigned HOST_WIDE_INT)
539 {
540 return opt_machine_mode ();
541 }
542