]>
Commit | Line | Data |
---|---|---|
38f8b050 JR |
1 | /* Target hook definitions. |
2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify it | |
6 | under the terms of the GNU General Public License as published by the | |
7 | Free Software Foundation; either version 3, or (at your option) any | |
8 | later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; see the file COPYING3. If not see | |
17 | <http://www.gnu.org/licenses/>. | |
18 | ||
19 | In other words, you are welcome to use, share and improve this program. | |
20 | You are forbidden to forbid anyone else to use, share and improve | |
21 | what you give them. Help stamp out software-hoarding! */ | |
22 | ||
23 | /* The following macros should be provided by the including file: | |
24 | ||
25 | DEFHOOK(NAME, DOC, TYPE, PARAMS, INIT): Define a function-valued hook. | |
26 | DEFHOOKPOD(DOC, TYPE, NAME, INIT): Define a piece-of-data 'hook'. */ | |
27 | ||
28 | /* Defaults for optional macros: | |
29 | DEFHOOKPODX(NAME, TYPE, INIT): Like DEFHOOKPOD, but share documentation | |
30 | with the previous 'hook'. */ | |
31 | #ifndef DEFHOOKPODX | |
32 | #define DEFHOOKPODX(NAME, TYPE, INIT) DEFHOOKPOD (NAME, 0, TYPE, INIT) | |
33 | #endif | |
34 | ||
35 | /* HOOKSTRUCT(FRAGMENT): Declarator fragments to encapsulate all the | |
36 | members into a struct gcc_target, which in turn contains several | |
37 | sub-structs. */ | |
38 | #ifndef HOOKSTRUCT | |
39 | #define HOOKSTRUCT(FRAGMENT) | |
40 | #endif | |
41 | /* HOOK_VECTOR: Start a struct declaration, which then gets its own initializer. | |
42 | HOOK_VECTOR_END: Close a struct declaration, providing a member declarator | |
43 | name for nested use. */ | |
44 | #ifndef HOOK_VECTOR_1 | |
45 | #define HOOK_VECTOR_1(NAME, FRAGMENT) HOOKSTRUCT(FRAGMENT) | |
46 | #endif | |
47 | #define HOOK_VECTOR(INIT_NAME, SNAME) HOOK_VECTOR_1 (INIT_NAME, struct SNAME {) | |
48 | #define HOOK_VECTOR_END(DECL_NAME) HOOK_VECTOR_1(,} DECL_NAME ;) | |
49 | ||
50 | HOOK_VECTOR (TARGET_INITIALIZER, gcc_target) | |
51 | ||
52 | /* FIXME: For pre-existing hooks, we can't place the documentation in the | |
53 | documentation field here till we get permission from the FSF to include | |
54 | it in GPLed software - the target hook documentation is so far only | |
55 | available under the GFDL. */ | |
56 | ||
57 | /* A hook should generally be documented by a string in the DOC parameter, | |
58 | which should contain texinfo markup. If the documentation is only available | |
59 | under the GPL, but not under the GFDL, put it in a comment above the hook | |
60 | definition. If the function declaration is available both under GPL and | |
61 | GFDL, but the documentation is only available under the GFDL, put the | |
62 | documentaton in tm.texi.in, heading with @hook <hookname> and closing | |
63 | the paragraph with @end deftypefn / deftypevr as appropriate, and marking | |
64 | the next autogenerated hook with @hook <hookname>. | |
65 | In both these cases, leave the DOC string empty, i.e. "". | |
f6170701 JR |
66 | Sometimes, for some historic reason the function declaration |
67 | has to be documented differently | |
38f8b050 JR |
68 | than what it is. In that case, use DEFHOOK_UNDOC to supress auto-generation |
69 | of documentation. DEFHOOK_UNDOC takes a DOC string which it ignores, so | |
70 | you can put GPLed documentation string there if you have hopes that you | |
71 | can clear the declaration & documentation for GFDL distribution later, | |
72 | in which case you can then simply change the DEFHOOK_UNDOC to DEFHOOK | |
73 | to turn on the autogeneration of the documentation. | |
74 | ||
75 | A documentation string of "*" means not to emit any documentation at all, | |
76 | and is mainly used internally for DEFHOOK_UNDOC. It should generally not | |
77 | be used otherwise, but it has its use for exceptional cases where automatic | |
78 | documentation is not wanted, and the real documentation is elsewere, like | |
79 | for TARGET_ASM_{,UN}ALIGNED_INT_OP, which are hooks only for implementation | |
80 | purposes; they refer to structs, the components of which are documented as | |
81 | separate hooks TARGET_ASM_{,UN}ALIGNED_[HSDT]I_OP. | |
82 | A DOC string of 0 is for internal use of DEFHOOKPODX and special table | |
83 | entries only. */ | |
84 | ||
85 | /* Functions that output assembler for the target. */ | |
86 | #define HOOK_PREFIX "TARGET_ASM_" | |
87 | HOOK_VECTOR (TARGET_ASM_OUT, asm_out) | |
88 | ||
89 | /* Opening and closing parentheses for asm expression grouping. */ | |
90 | DEFHOOKPOD | |
91 | (open_paren, | |
92 | "", | |
93 | const char *, "(") | |
94 | DEFHOOKPODX (close_paren, const char *, ")") | |
95 | ||
96 | /* Assembler instructions for creating various kinds of integer object. */ | |
97 | DEFHOOKPOD | |
98 | (byte_op, | |
99 | "", | |
100 | const char *, "\t.byte\t") | |
101 | DEFHOOKPOD (aligned_op, "*", struct asm_int_op, TARGET_ASM_ALIGNED_INT_OP) | |
102 | DEFHOOKPOD (unaligned_op, "*", struct asm_int_op, TARGET_ASM_UNALIGNED_INT_OP) | |
103 | ||
ad0c4c36 DD |
104 | /* The maximum number of bytes to skip when applying |
105 | LABEL_ALIGN_AFTER_BARRIER. */ | |
106 | DEFHOOK | |
107 | (label_align_after_barrier_max_skip, | |
108 | "", | |
109 | int, (rtx label), | |
110 | default_label_align_after_barrier_max_skip) | |
111 | ||
112 | /* The maximum number of bytes to skip when applying | |
113 | LOOP_ALIGN. */ | |
114 | DEFHOOK | |
115 | (loop_align_max_skip, | |
116 | "", | |
117 | int, (rtx label), | |
118 | default_loop_align_max_skip) | |
119 | ||
120 | /* The maximum number of bytes to skip when applying | |
121 | LABEL_ALIGN. */ | |
122 | DEFHOOK | |
123 | (label_align_max_skip, | |
124 | "", | |
125 | int, (rtx label), | |
126 | default_label_align_max_skip) | |
127 | ||
128 | /* The maximum number of bytes to skip when applying | |
129 | JUMP_ALIGN. */ | |
130 | DEFHOOK | |
131 | (jump_align_max_skip, | |
132 | "", | |
133 | int, (rtx label), | |
134 | default_jump_align_max_skip) | |
135 | ||
38f8b050 JR |
136 | /* Try to output the assembler code for an integer object whose |
137 | value is given by X. SIZE is the size of the object in bytes and | |
138 | ALIGNED_P indicates whether it is aligned. Return true if | |
139 | successful. Only handles cases for which BYTE_OP, ALIGNED_OP | |
140 | and UNALIGNED_OP are NULL. */ | |
141 | DEFHOOK | |
142 | (integer, | |
143 | "", | |
144 | /* Only handles cases for which BYTE_OP, ALIGNED_OP and UNALIGNED_OP are | |
145 | NULL. */ | |
146 | bool, (rtx x, unsigned int size, int aligned_p), | |
147 | default_assemble_integer) | |
148 | ||
149 | /* Output code that will globalize a label. */ | |
150 | DEFHOOK | |
151 | (globalize_label, | |
152 | "", | |
153 | void, (FILE *stream, const char *name), | |
154 | default_globalize_label) | |
155 | ||
156 | /* Output code that will globalize a declaration. */ | |
157 | DEFHOOK | |
158 | (globalize_decl_name, | |
159 | "", | |
160 | void, (FILE *stream, tree decl), default_globalize_decl_name) | |
161 | ||
162 | /* Output code that will emit a label for unwind info, if this | |
163 | target requires such labels. Second argument is the decl the | |
164 | unwind info is associated with, third is a boolean: true if | |
165 | this is for exception handling, fourth is a boolean: true if | |
166 | this is only a placeholder for an omitted FDE. */ | |
167 | DEFHOOK | |
168 | (emit_unwind_label, | |
169 | "", | |
170 | void, (FILE *stream, tree decl, int for_eh, int empty), | |
171 | default_emit_unwind_label) | |
172 | ||
173 | /* Output code that will emit a label to divide up the exception table. */ | |
174 | DEFHOOK | |
175 | (emit_except_table_label, | |
176 | "", | |
177 | void, (FILE *stream), | |
178 | default_emit_except_table_label) | |
179 | ||
a68b5e52 RH |
180 | /* Emit a directive for setting the personality for the function. */ |
181 | DEFHOOK | |
182 | (emit_except_personality, | |
183 | "If the target implements @code{TARGET_ASM_UNWIND_EMIT}, this hook may be\ | |
184 | used to emit a directive to install a personality hook into the unwind\ | |
185 | info. This hook should not be used if dwarf2 unwind info is used.", | |
186 | void, (rtx personality), | |
187 | NULL) | |
188 | ||
38f8b050 JR |
189 | /* Emit any directives required to unwind this instruction. */ |
190 | DEFHOOK | |
191 | (unwind_emit, | |
192 | "", | |
193 | void, (FILE *stream, rtx insn), | |
2784ed9c | 194 | NULL) |
38f8b050 | 195 | |
3bc6b3e6 RH |
196 | DEFHOOKPOD |
197 | (unwind_emit_before_insn, | |
198 | "True if the @code{TARGET_ASM_UNWIND_EMIT} hook should be called before\ | |
199 | the assembly for @var{insn} has been emitted, false if the hook should\ | |
200 | be called afterward.", | |
201 | bool, true) | |
202 | ||
4ee3b013 JR |
203 | /* Generate an internal label. |
204 | For now this is just a wrapper for ASM_GENERATE_INTERNAL_LABEL. */ | |
205 | DEFHOOK_UNDOC | |
206 | (generate_internal_label, | |
207 | "", | |
208 | void, (char *buf, const char *prefix, unsigned long labelno), | |
209 | default_generate_internal_label) | |
210 | ||
38f8b050 JR |
211 | /* Output an internal label. */ |
212 | DEFHOOK | |
213 | (internal_label, | |
214 | "", | |
215 | void, (FILE *stream, const char *prefix, unsigned long labelno), | |
216 | default_internal_label) | |
217 | ||
218 | /* Output label for the constant. */ | |
ad78130c | 219 | DEFHOOK |
38f8b050 JR |
220 | (declare_constant_name, |
221 | "", | |
ad78130c | 222 | void, (FILE *file, const char *name, const_tree expr, HOST_WIDE_INT size), |
38f8b050 JR |
223 | default_asm_declare_constant_name) |
224 | ||
225 | /* Emit a ttype table reference to a typeinfo object. */ | |
226 | DEFHOOK | |
227 | (ttype, | |
228 | "", | |
229 | bool, (rtx sym), | |
230 | hook_bool_rtx_false) | |
231 | ||
232 | /* Emit an assembler directive to set visibility for the symbol | |
233 | associated with the tree decl. */ | |
234 | DEFHOOK | |
235 | (assemble_visibility, | |
236 | "", | |
237 | void, (tree decl, int visibility), | |
238 | default_assemble_visibility) | |
239 | ||
240 | /* Output the assembler code for entry to a function. */ | |
241 | DEFHOOK | |
242 | (function_prologue, | |
243 | "", | |
244 | void, (FILE *file, HOST_WIDE_INT size), | |
245 | default_function_pro_epilogue) | |
246 | ||
247 | /* Output the assembler code for end of prologue. */ | |
248 | DEFHOOK | |
249 | (function_end_prologue, | |
250 | "", | |
251 | void, (FILE *file), | |
252 | no_asm_to_stream) | |
253 | ||
254 | /* Output the assembler code for start of epilogue. */ | |
255 | DEFHOOK | |
256 | (function_begin_epilogue, | |
257 | "", | |
258 | void, (FILE *file), | |
259 | no_asm_to_stream) | |
260 | ||
261 | /* Output the assembler code for function exit. */ | |
262 | DEFHOOK | |
263 | (function_epilogue, | |
264 | "", | |
265 | void, (FILE *file, HOST_WIDE_INT size), | |
266 | default_function_pro_epilogue) | |
267 | ||
268 | /* Initialize target-specific sections. */ | |
269 | DEFHOOK | |
270 | (init_sections, | |
271 | "", | |
272 | void, (void), | |
273 | hook_void_void) | |
274 | ||
275 | /* Tell assembler to change to section NAME with attributes FLAGS. | |
276 | If DECL is non-NULL, it is the VAR_DECL or FUNCTION_DECL with | |
277 | which this section is associated. */ | |
278 | DEFHOOK | |
279 | (named_section, | |
280 | "", | |
281 | void, (const char *name, unsigned int flags, tree decl), | |
282 | default_no_named_section) | |
283 | ||
284 | /* Return a mask describing how relocations should be treated when | |
285 | selecting sections. Bit 1 should be set if global relocations | |
286 | should be placed in a read-write section; bit 0 should be set if | |
287 | local relocations should be placed in a read-write section. */ | |
288 | DEFHOOK | |
289 | (reloc_rw_mask, | |
290 | "", | |
291 | int, (void), | |
292 | default_reloc_rw_mask) | |
293 | ||
294 | /* Return a section for EXP. It may be a DECL or a constant. RELOC | |
295 | is nonzero if runtime relocations must be applied; bit 1 will be | |
296 | set if the runtime relocations require non-local name resolution. | |
297 | ALIGN is the required alignment of the data. */ | |
298 | DEFHOOK | |
299 | (select_section, | |
300 | "", | |
301 | section *, (tree exp, int reloc, unsigned HOST_WIDE_INT align), | |
302 | default_select_section) | |
303 | ||
304 | /* Return a section for X. MODE is X's mode and ALIGN is its | |
305 | alignment in bits. */ | |
306 | DEFHOOK | |
307 | (select_rtx_section, | |
308 | "", | |
309 | section *, (enum machine_mode mode, rtx x, unsigned HOST_WIDE_INT align), | |
310 | default_select_rtx_section) | |
311 | ||
312 | /* Select a unique section name for DECL. RELOC is the same as | |
313 | for SELECT_SECTION. */ | |
314 | DEFHOOK | |
315 | (unique_section, | |
316 | "", | |
317 | void, (tree decl, int reloc), | |
318 | default_unique_section) | |
319 | ||
320 | /* Return the readonly data section associated with function DECL. */ | |
321 | DEFHOOK | |
322 | (function_rodata_section, | |
323 | "", | |
324 | section *, (tree decl), | |
325 | default_function_rodata_section) | |
326 | ||
327 | /* Output a constructor for a symbol with a given priority. */ | |
328 | DEFHOOK | |
329 | (constructor, | |
330 | "", | |
331 | void, (rtx symbol, int priority), NULL) | |
332 | ||
333 | /* Output a destructor for a symbol with a given priority. */ | |
334 | DEFHOOK | |
335 | (destructor, | |
336 | "", | |
337 | void, (rtx symbol, int priority), NULL) | |
338 | ||
339 | /* Output the assembler code for a thunk function. THUNK_DECL is the | |
340 | declaration for the thunk function itself, FUNCTION is the decl for | |
341 | the target function. DELTA is an immediate constant offset to be | |
342 | added to THIS. If VCALL_OFFSET is nonzero, the word at | |
343 | *(*this + vcall_offset) should be added to THIS. */ | |
344 | DEFHOOK | |
345 | (output_mi_thunk, | |
346 | "", | |
347 | void, (FILE *file, tree thunk_fndecl, HOST_WIDE_INT delta, | |
348 | HOST_WIDE_INT vcall_offset, tree function), | |
349 | NULL) | |
350 | ||
351 | /* Determine whether output_mi_thunk would succeed. */ | |
352 | /* ??? Ideally, this hook would not exist, and success or failure | |
353 | would be returned from output_mi_thunk directly. But there's | |
354 | too much undo-able setup involved in invoking output_mi_thunk. | |
355 | Could be fixed by making output_mi_thunk emit rtl instead of | |
356 | text to the output file. */ | |
357 | DEFHOOK | |
358 | (can_output_mi_thunk, | |
359 | "", | |
360 | bool, (const_tree thunk_fndecl, HOST_WIDE_INT delta, | |
361 | HOST_WIDE_INT vcall_offset, const_tree function), | |
362 | hook_bool_const_tree_hwi_hwi_const_tree_false) | |
363 | ||
364 | /* Output any boilerplate text needed at the beginning of a | |
365 | translation unit. */ | |
366 | DEFHOOK | |
367 | (file_start, | |
368 | "", | |
369 | void, (void), | |
370 | default_file_start) | |
371 | ||
372 | /* Output any boilerplate text needed at the end of a translation unit. */ | |
373 | DEFHOOK | |
374 | (file_end, | |
375 | "", | |
376 | void, (void), | |
377 | hook_void_void) | |
378 | ||
379 | /* Output any boilerplate text needed at the beginning of an | |
380 | LTO output stream. */ | |
381 | DEFHOOK | |
382 | (lto_start, | |
383 | "", | |
384 | void, (void), | |
385 | hook_void_void) | |
386 | ||
387 | /* Output any boilerplate text needed at the end of an | |
388 | LTO output stream. */ | |
389 | DEFHOOK | |
390 | (lto_end, | |
391 | "", | |
392 | void, (void), | |
393 | hook_void_void) | |
394 | ||
395 | /* Output any boilerplace text needed at the end of a | |
396 | translation unit before debug and unwind info is emitted. */ | |
397 | DEFHOOK | |
398 | (code_end, | |
399 | "", | |
400 | void, (void), | |
401 | hook_void_void) | |
402 | ||
403 | /* Output an assembler pseudo-op to declare a library function name | |
404 | external. */ | |
405 | DEFHOOK | |
406 | (external_libcall, | |
407 | "", | |
408 | void, (rtx symref), | |
409 | default_external_libcall) | |
410 | ||
411 | /* Output an assembler directive to mark decl live. This instructs | |
412 | linker to not dead code strip this symbol. */ | |
413 | DEFHOOK | |
414 | (mark_decl_preserved, | |
415 | "", | |
416 | void, (const char *symbol), | |
417 | hook_void_constcharptr) | |
418 | ||
419 | /* Output a record of the command line switches that have been passed. */ | |
420 | DEFHOOK | |
421 | (record_gcc_switches, | |
422 | "", | |
423 | int, (print_switch_type type, const char *text), | |
424 | NULL) | |
425 | ||
426 | /* The name of the section that the example ELF implementation of | |
427 | record_gcc_switches will use to store the information. Target | |
428 | specific versions of record_gcc_switches may or may not use | |
429 | this information. */ | |
430 | DEFHOOKPOD | |
431 | (record_gcc_switches_section, | |
432 | "", | |
433 | const char *, ".GCC.command.line") | |
434 | ||
435 | /* Output the definition of a section anchor. */ | |
436 | DEFHOOK | |
437 | (output_anchor, | |
438 | "", | |
439 | void, (rtx x), | |
440 | default_asm_output_anchor) | |
441 | ||
442 | /* Output a DTP-relative reference to a TLS symbol. */ | |
443 | DEFHOOK | |
444 | (output_dwarf_dtprel, | |
445 | "", | |
446 | void, (FILE *file, int size, rtx x), | |
447 | NULL) | |
448 | ||
449 | /* Some target machines need to postscan each insn after it is output. */ | |
450 | DEFHOOK | |
451 | (final_postscan_insn, | |
452 | "", | |
453 | void, (FILE *file, rtx insn, rtx *opvec, int noperands), | |
454 | NULL) | |
455 | ||
456 | /* Emit the trampoline template. This hook may be NULL. */ | |
457 | DEFHOOK | |
458 | (trampoline_template, | |
459 | "", | |
460 | void, (FILE *f), | |
461 | NULL) | |
462 | ||
b5f5d41d AS |
463 | DEFHOOK |
464 | (output_source_filename, | |
465 | "Output COFF information or DWARF debugging information which indicates\ | |
466 | that filename @var{name} is the current source file to the stdio\ | |
467 | stream @var{file}.\n\ | |
468 | \n\ | |
469 | This target hook need not be defined if the standard form of output\ | |
470 | for the file format in use is appropriate.", | |
471 | void ,(FILE *file, const char *name), | |
472 | default_asm_output_source_filename) | |
473 | ||
6cbd8875 AS |
474 | DEFHOOK |
475 | (output_addr_const_extra, | |
476 | "", | |
477 | bool, (FILE *file, rtx x), | |
478 | default_asm_output_addr_const_extra) | |
479 | ||
38f8b050 JR |
480 | /* ??? The TARGET_PRINT_OPERAND* hooks are part of the asm_out struct, |
481 | even though that is not reflected in the macro name to override their | |
482 | initializers. */ | |
483 | #undef HOOK_PREFIX | |
484 | #define HOOK_PREFIX "TARGET_" | |
485 | ||
486 | /* Emit a machine-specific insn operand. */ | |
4d00d5dd JR |
487 | /* ??? tm.texi only documents the old macro PRINT_OPERAND, |
488 | not this hook, and uses a different name for the argument FILE. */ | |
38f8b050 JR |
489 | DEFHOOK_UNDOC |
490 | (print_operand, | |
491 | "", | |
492 | void, (FILE *file, rtx x, int code), | |
493 | default_print_operand) | |
494 | ||
495 | /* Emit a machine-specific memory address. */ | |
4d00d5dd JR |
496 | /* ??? tm.texi only documents the old macro PRINT_OPERAND_ADDRESS, |
497 | not this hook, and uses different argument names. */ | |
38f8b050 JR |
498 | DEFHOOK_UNDOC |
499 | (print_operand_address, | |
500 | "", | |
501 | void, (FILE *file, rtx addr), | |
502 | default_print_operand_address) | |
503 | ||
504 | /* Determine whether CODE is a valid punctuation character for the | |
505 | `print_operand' hook. */ | |
4d00d5dd JR |
506 | /* ??? tm.texi only documents the old macro PRINT_OPERAND_PUNCT_VALID_P, |
507 | not this hook. */ | |
38f8b050 JR |
508 | DEFHOOK_UNDOC |
509 | (print_operand_punct_valid_p, | |
510 | "", | |
511 | bool ,(unsigned char code), | |
512 | default_print_operand_punct_valid_p) | |
513 | ||
514 | HOOK_VECTOR_END (asm_out) | |
515 | ||
516 | /* Functions relating to instruction scheduling. All of these | |
517 | default to null pointers, which haifa-sched.c looks for and handles. */ | |
518 | #undef HOOK_PREFIX | |
519 | #define HOOK_PREFIX "TARGET_SCHED_" | |
520 | HOOK_VECTOR (TARGET_SCHED, sched) | |
521 | ||
522 | /* Given the current cost, COST, of an insn, INSN, calculate and | |
523 | return a new cost based on its relationship to DEP_INSN through | |
524 | the dependence LINK. The default is to make no adjustment. */ | |
525 | DEFHOOK | |
526 | (adjust_cost, | |
527 | "", | |
528 | int, (rtx insn, rtx link, rtx dep_insn, int cost), NULL) | |
529 | ||
530 | /* Adjust the priority of an insn as you see fit. Returns the new priority. */ | |
531 | DEFHOOK | |
532 | (adjust_priority, | |
533 | "", | |
534 | int, (rtx insn, int priority), NULL) | |
535 | ||
536 | /* Function which returns the maximum number of insns that can be | |
537 | scheduled in the same machine cycle. This must be constant | |
538 | over an entire compilation. The default is 1. */ | |
539 | DEFHOOK | |
540 | (issue_rate, | |
541 | "", | |
542 | int, (void), NULL) | |
543 | ||
544 | /* Calculate how much this insn affects how many more insns we | |
545 | can emit this cycle. Default is they all cost the same. */ | |
546 | DEFHOOK | |
547 | (variable_issue, | |
548 | "", | |
549 | int, (FILE *file, int verbose, rtx insn, int more), NULL) | |
550 | ||
551 | /* Initialize machine-dependent scheduling code. */ | |
552 | DEFHOOK | |
553 | (init, | |
554 | "", | |
555 | void, (FILE *file, int verbose, int max_ready), NULL) | |
556 | ||
557 | /* Finalize machine-dependent scheduling code. */ | |
558 | DEFHOOK | |
559 | (finish, | |
560 | "", | |
561 | void, (FILE *file, int verbose), NULL) | |
562 | ||
563 | /* Initialize machine-dependent function wide scheduling code. */ | |
564 | DEFHOOK | |
565 | (init_global, | |
566 | "", | |
567 | void, (FILE *file, int verbose, int old_max_uid), NULL) | |
568 | ||
569 | /* Finalize machine-dependent function wide scheduling code. */ | |
570 | DEFHOOK | |
571 | (finish_global, | |
572 | "", | |
573 | void, (FILE *file, int verbose), NULL) | |
574 | ||
575 | /* Reorder insns in a machine-dependent fashion, in two different | |
576 | places. Default does nothing. */ | |
577 | DEFHOOK | |
578 | (reorder, | |
579 | "", | |
580 | int, (FILE *file, int verbose, rtx *ready, int *n_readyp, int clock), NULL) | |
581 | ||
582 | DEFHOOK | |
583 | (reorder2, | |
584 | "", | |
585 | int, (FILE *file, int verbose, rtx *ready, int *n_readyp, int clock), NULL) | |
586 | ||
587 | /* The following member value is a pointer to a function called | |
588 | after evaluation forward dependencies of insns in chain given | |
589 | by two parameter values (head and tail correspondingly). */ | |
590 | DEFHOOK | |
591 | (dependencies_evaluation_hook, | |
592 | "", | |
593 | void, (rtx head, rtx tail), NULL) | |
594 | ||
595 | /* The values of the following four members are pointers to functions | |
596 | used to simplify the automaton descriptions. dfa_pre_cycle_insn and | |
597 | dfa_post_cycle_insn give functions returning insns which are used to | |
598 | change the pipeline hazard recognizer state when the new simulated | |
599 | processor cycle correspondingly starts and finishes. The function | |
600 | defined by init_dfa_pre_cycle_insn and init_dfa_post_cycle_insn are | |
601 | used to initialize the corresponding insns. The default values of | |
602 | the members result in not changing the automaton state when the | |
603 | new simulated processor cycle correspondingly starts and finishes. */ | |
604 | ||
605 | DEFHOOK | |
606 | (init_dfa_pre_cycle_insn, | |
607 | "", | |
608 | void, (void), NULL) | |
609 | ||
610 | DEFHOOK | |
611 | (dfa_pre_cycle_insn, | |
612 | "", | |
613 | rtx, (void), NULL) | |
614 | ||
615 | DEFHOOK | |
616 | (init_dfa_post_cycle_insn, | |
617 | "", | |
618 | void, (void), NULL) | |
619 | ||
620 | DEFHOOK | |
621 | (dfa_post_cycle_insn, | |
622 | "", | |
623 | rtx, (void), NULL) | |
624 | ||
625 | /* The values of the following two members are pointers to | |
626 | functions used to simplify the automaton descriptions. | |
627 | dfa_pre_advance_cycle and dfa_post_advance_cycle are getting called | |
628 | immediately before and after cycle is advanced. */ | |
629 | ||
630 | DEFHOOK | |
631 | (dfa_pre_advance_cycle, | |
632 | "", | |
633 | void, (void), NULL) | |
634 | ||
635 | DEFHOOK | |
636 | (dfa_post_advance_cycle, | |
637 | "", | |
638 | void, (void), NULL) | |
639 | ||
640 | /* The following member value is a pointer to a function returning value | |
641 | which defines how many insns in queue `ready' will we try for | |
642 | multi-pass scheduling. If the member value is nonzero and the | |
643 | function returns positive value, the DFA based scheduler will make | |
644 | multi-pass scheduling for the first cycle. In other words, we will | |
645 | try to choose ready insn which permits to start maximum number of | |
646 | insns on the same cycle. */ | |
647 | DEFHOOK | |
648 | (first_cycle_multipass_dfa_lookahead, | |
649 | "", | |
650 | int, (void), NULL) | |
651 | ||
652 | /* The following member value is pointer to a function controlling | |
653 | what insns from the ready insn queue will be considered for the | |
654 | multipass insn scheduling. If the hook returns zero for insn | |
655 | passed as the parameter, the insn will be not chosen to be issued. */ | |
656 | DEFHOOK | |
657 | (first_cycle_multipass_dfa_lookahead_guard, | |
658 | "", | |
659 | int, (rtx insn), NULL) | |
660 | ||
894fd6f2 MK |
661 | /* This hook prepares the target for a new round of multipass |
662 | scheduling. | |
663 | DATA is a pointer to target-specific data used for multipass scheduling. | |
664 | READY_TRY and N_READY represent the current state of search in the | |
665 | optimization space. The target can filter out instructions that | |
666 | should not be tried during current round by setting corresponding | |
667 | elements in READY_TRY to non-zero. | |
668 | FIRST_CYCLE_INSN_P is true if this is the first round of multipass | |
669 | scheduling on current cycle. */ | |
670 | DEFHOOK | |
671 | (first_cycle_multipass_begin, | |
672 | "", | |
673 | void, (void *data, char *ready_try, int n_ready, bool first_cycle_insn_p), | |
674 | NULL) | |
675 | ||
676 | /* This hook is called when multipass scheduling evaluates instruction INSN. | |
677 | DATA is a pointer to target-specific data that can be used to record effects | |
678 | of INSN on CPU that are not described in DFA. | |
679 | READY_TRY and N_READY represent the current state of search in the | |
680 | optimization space. The target can filter out instructions that | |
681 | should not be tried after issueing INSN by setting corresponding | |
682 | elements in READY_TRY to non-zero. | |
683 | INSN is the instruction being evaluated. | |
684 | PREV_DATA is a pointer to target-specific data corresponding | |
685 | to a state before issueing INSN. */ | |
686 | DEFHOOK | |
687 | (first_cycle_multipass_issue, | |
688 | "", | |
689 | void, (void *data, char *ready_try, int n_ready, rtx insn, | |
690 | const void *prev_data), NULL) | |
691 | ||
692 | /* This hook is called when multipass scheduling backtracks from evaluation of | |
693 | instruction corresponding to DATA. | |
694 | DATA is a pointer to target-specific data that stores the effects | |
695 | of instruction from which the algorithm backtracks on CPU that are not | |
696 | described in DFA. | |
697 | READY_TRY and N_READY represent the current state of search in the | |
698 | optimization space. The target can filter out instructions that | |
699 | should not be tried after issueing INSN by setting corresponding | |
700 | elements in READY_TRY to non-zero. */ | |
701 | DEFHOOK | |
702 | (first_cycle_multipass_backtrack, | |
703 | "", | |
704 | void, (const void *data, char *ready_try, int n_ready), NULL) | |
705 | ||
706 | /* This hook notifies the target about the result of the concluded current | |
707 | round of multipass scheduling. | |
708 | DATA is a pointer. | |
709 | If DATA is non-NULL it points to target-specific data used for multipass | |
710 | scheduling which corresponds to instruction at the start of the chain of | |
711 | the winning solution. DATA is NULL when multipass scheduling cannot find | |
712 | a good enough solution on current cycle and decides to retry later, | |
713 | usually after advancing the cycle count. */ | |
714 | DEFHOOK | |
715 | (first_cycle_multipass_end, | |
716 | "", | |
717 | void, (const void *data), NULL) | |
718 | ||
719 | /* This hook is called to initialize target-specific data for multipass | |
720 | scheduling after it has been allocated. | |
721 | DATA is a pointer to target-specific data that stores the effects | |
722 | of instruction from which the algorithm backtracks on CPU that are not | |
723 | described in DFA. */ | |
724 | DEFHOOK | |
725 | (first_cycle_multipass_init, | |
726 | "", | |
727 | void, (void *data), NULL) | |
728 | ||
729 | /* This hook is called to finalize target-specific data for multipass | |
730 | scheduling before it is deallocated. | |
731 | DATA is a pointer to target-specific data that stores the effects | |
732 | of instruction from which the algorithm backtracks on CPU that are not | |
733 | described in DFA. */ | |
734 | DEFHOOK | |
735 | (first_cycle_multipass_fini, | |
736 | "", | |
737 | void, (void *data), NULL) | |
738 | ||
38f8b050 JR |
739 | /* The following member value is pointer to a function called by |
740 | the insn scheduler before issuing insn passed as the third | |
741 | parameter on given cycle. If the hook returns nonzero, the | |
742 | insn is not issued on given processors cycle. Instead of that, | |
743 | the processor cycle is advanced. If the value passed through | |
744 | the last parameter is zero, the insn ready queue is not sorted | |
745 | on the new cycle start as usually. The first parameter passes | |
746 | file for debugging output. The second one passes the scheduler | |
747 | verbose level of the debugging output. The forth and the fifth | |
748 | parameter values are correspondingly processor cycle on which | |
749 | the previous insn has been issued and the current processor cycle. */ | |
c06bbdf7 | 750 | DEFHOOK |
38f8b050 JR |
751 | (dfa_new_cycle, |
752 | "", | |
c06bbdf7 JR |
753 | int, (FILE *dump, int verbose, rtx insn, int last_clock, |
754 | int clock, int *sort_p), | |
38f8b050 JR |
755 | NULL) |
756 | ||
757 | /* The following member value is a pointer to a function called by the | |
758 | insn scheduler. It should return true if there exists a dependence | |
759 | which is considered costly by the target, between the insn | |
760 | DEP_PRO (&_DEP), and the insn DEP_CON (&_DEP). The first parameter is | |
761 | the dep that represents the dependence between the two insns. The | |
762 | second argument is the cost of the dependence as estimated by | |
763 | the scheduler. The last argument is the distance in cycles | |
764 | between the already scheduled insn (first parameter) and the | |
765 | second insn (second parameter). */ | |
766 | DEFHOOK | |
767 | (is_costly_dependence, | |
768 | "", | |
769 | bool, (struct _dep *_dep, int cost, int distance), NULL) | |
770 | ||
771 | DEFHOOK_UNDOC | |
772 | (adjust_cost_2, | |
773 | "Given the current cost, @var{cost}, of an insn, @var{insn}, calculate and\ | |
774 | return a new cost based on its relationship to @var{dep_insn} through the\ | |
775 | dependence of weakness @var{dw}. The default is to make no adjustment.", | |
776 | int, (rtx insn, int dep_type1, rtx dep_insn, int cost, int dw), NULL) | |
777 | ||
778 | /* The following member value is a pointer to a function called | |
779 | by the insn scheduler. This hook is called to notify the backend | |
780 | that new instructions were emitted. */ | |
781 | DEFHOOK | |
782 | (h_i_d_extended, | |
783 | "", | |
784 | void, (void), NULL) | |
785 | ||
786 | /* Next 5 functions are for multi-point scheduling. */ | |
787 | ||
788 | /* Allocate memory for scheduler context. */ | |
789 | DEFHOOK | |
790 | (alloc_sched_context, | |
791 | "", | |
792 | void *, (void), NULL) | |
793 | ||
794 | /* Fills the context from the local machine scheduler context. */ | |
795 | DEFHOOK | |
796 | (init_sched_context, | |
797 | "", | |
798 | void, (void *tc, bool clean_p), NULL) | |
799 | ||
800 | /* Sets local machine scheduler context to a saved value. */ | |
801 | DEFHOOK | |
802 | (set_sched_context, | |
803 | "", | |
804 | void, (void *tc), NULL) | |
805 | ||
806 | /* Clears a scheduler context so it becomes like after init. */ | |
807 | DEFHOOK | |
808 | (clear_sched_context, | |
809 | "", | |
810 | void, (void *tc), NULL) | |
811 | ||
812 | /* Frees the scheduler context. */ | |
813 | DEFHOOK | |
814 | (free_sched_context, | |
815 | "", | |
816 | void, (void *tc), NULL) | |
817 | ||
818 | /* The following member value is a pointer to a function called | |
819 | by the insn scheduler. | |
820 | The first parameter is an instruction, the second parameter is the type | |
821 | of the requested speculation, and the third parameter is a pointer to the | |
822 | speculative pattern of the corresponding type (set if return value == 1). | |
823 | It should return | |
824 | -1, if there is no pattern, that will satisfy the requested speculation type, | |
825 | 0, if current pattern satisfies the requested speculation type, | |
826 | 1, if pattern of the instruction should be changed to the newly | |
827 | generated one. */ | |
828 | DEFHOOK | |
829 | (speculate_insn, | |
830 | "", | |
831 | int, (rtx insn, int request, rtx *new_pat), NULL) | |
832 | ||
833 | /* The following member value is a pointer to a function called | |
834 | by the insn scheduler. It should return true if the check instruction | |
835 | passed as the parameter needs a recovery block. */ | |
836 | DEFHOOK | |
837 | (needs_block_p, | |
838 | "", | |
839 | bool, (int dep_status), NULL) | |
840 | ||
841 | /* The following member value is a pointer to a function called | |
842 | by the insn scheduler. It should return a pattern for the check | |
843 | instruction. | |
844 | The first parameter is a speculative instruction, the second parameter | |
845 | is the label of the corresponding recovery block (or null, if it is a | |
846 | simple check). If the mutation of the check is requested (e.g. from | |
847 | ld.c to chk.a), the third parameter is true - in this case the first | |
848 | parameter is the previous check. */ | |
849 | DEFHOOK | |
850 | (gen_spec_check, | |
851 | "", | |
852 | rtx, (rtx insn, rtx label, int mutate_p), NULL) | |
853 | ||
854 | /* The following member value is a pointer to a function controlling | |
855 | what insns from the ready insn queue will be considered for the | |
856 | multipass insn scheduling. If the hook returns zero for the insn | |
857 | passed as the parameter, the insn will not be chosen to be | |
858 | issued. This hook is used to discard speculative instructions, | |
859 | that stand at the first position of the ready list. */ | |
860 | DEFHOOK | |
861 | (first_cycle_multipass_dfa_lookahead_guard_spec, | |
862 | "", | |
863 | bool, (const_rtx insn), NULL) | |
864 | ||
865 | /* The following member value is a pointer to a function that provides | |
866 | information about the speculation capabilities of the target. | |
867 | The parameter is a pointer to spec_info variable. */ | |
868 | DEFHOOK | |
869 | (set_sched_flags, | |
870 | "", | |
871 | void, (struct spec_info_def *spec_info), NULL) | |
872 | ||
873 | DEFHOOK_UNDOC | |
874 | (get_insn_spec_ds, | |
875 | "Return speculation types of instruction @var{insn}.", | |
876 | int, (rtx insn), NULL) | |
877 | ||
878 | DEFHOOK_UNDOC | |
879 | (get_insn_checked_ds, | |
880 | "Return speculation types that are checked for instruction @var{insn}", | |
881 | int, (rtx insn), NULL) | |
882 | ||
883 | DEFHOOK_UNDOC | |
884 | (skip_rtx_p, | |
885 | "Return bool if rtx scanning should just skip current layer and\ | |
886 | advance to the inner rtxes.", | |
887 | bool, (const_rtx x), NULL) | |
888 | ||
889 | /* The following member value is a pointer to a function that provides | |
890 | information about the target resource-based lower bound which is | |
891 | used by the swing modulo scheduler. The parameter is a pointer | |
892 | to ddg variable. */ | |
893 | DEFHOOK | |
894 | (sms_res_mii, | |
895 | "", | |
896 | int, (struct ddg *g), NULL) | |
897 | ||
7942e47e RY |
898 | /* The following member value is a function that initializes dispatch |
899 | schedling and adds instructions to dispatch window according to its | |
900 | parameters. */ | |
901 | DEFHOOK | |
902 | (dispatch_do, | |
903 | "", | |
904 | void, (rtx insn, int x), | |
905 | hook_void_rtx_int) | |
906 | ||
907 | /* The following member value is a a function that returns true is | |
908 | dispatch schedling is supported in hardware and condition passed | |
909 | as the second parameter is true. */ | |
910 | DEFHOOK | |
911 | (dispatch, | |
912 | "", | |
913 | bool, (rtx insn, int x), | |
914 | hook_bool_rtx_int_false) | |
915 | ||
38f8b050 JR |
916 | HOOK_VECTOR_END (sched) |
917 | ||
918 | /* Functions relating to vectorization. */ | |
919 | #undef HOOK_PREFIX | |
920 | #define HOOK_PREFIX "TARGET_VECTORIZE_" | |
921 | HOOK_VECTOR (TARGET_VECTORIZE, vectorize) | |
922 | ||
923 | /* The following member value is a pointer to a function called | |
924 | by the vectorizer, and return the decl of the target builtin | |
925 | function. */ | |
926 | DEFHOOK | |
927 | (builtin_mask_for_load, | |
928 | "", | |
929 | tree, (void), NULL) | |
930 | ||
931 | /* Returns a code for builtin that realizes vectorized version of | |
932 | function, or NULL_TREE if not available. */ | |
933 | DEFHOOK | |
934 | (builtin_vectorized_function, | |
935 | "", | |
936 | tree, (tree fndecl, tree vec_type_out, tree vec_type_in), | |
937 | default_builtin_vectorized_function) | |
938 | ||
939 | /* Returns a function declaration for a builtin that realizes the | |
940 | vector conversion, or NULL_TREE if not available. */ | |
941 | DEFHOOK | |
942 | (builtin_conversion, | |
943 | "", | |
944 | tree, (unsigned code, tree dest_type, tree src_type), | |
945 | default_builtin_vectorized_conversion) | |
946 | ||
947 | /* Target builtin that implements vector widening multiplication. | |
948 | builtin_mul_widen_eve computes the element-by-element products | |
949 | for the even elements, and builtin_mul_widen_odd computes the | |
950 | element-by-element products for the odd elements. */ | |
951 | DEFHOOK | |
952 | (builtin_mul_widen_even, | |
953 | "", | |
954 | tree, (tree x), NULL) | |
955 | ||
956 | DEFHOOK | |
957 | (builtin_mul_widen_odd, | |
958 | "", | |
959 | tree, (tree x), NULL) | |
960 | ||
720f5239 IR |
961 | /* Cost of different vector/scalar statements in vectorization cost |
962 | model. In case of misaligned vector loads and stores the cost depends | |
963 | on the data type and misalignment value. */ | |
38f8b050 JR |
964 | DEFHOOK |
965 | (builtin_vectorization_cost, | |
966 | "", | |
720f5239 | 967 | int, (enum vect_cost_for_stmt type_of_cost, tree vectype, int misalign), |
38f8b050 JR |
968 | default_builtin_vectorization_cost) |
969 | ||
970 | /* Return true if vector alignment is reachable (by peeling N | |
971 | iterations) for the given type. */ | |
972 | DEFHOOK | |
973 | (vector_alignment_reachable, | |
974 | "", | |
975 | bool, (const_tree type, bool is_packed), | |
976 | default_builtin_vector_alignment_reachable) | |
977 | ||
978 | /* Target builtin that implements vector permute. */ | |
979 | DEFHOOK | |
980 | (builtin_vec_perm, | |
981 | "", | |
982 | tree, (tree type, tree *mask_element_type), NULL) | |
983 | ||
984 | /* Return true if a vector created for builtin_vec_perm is valid. */ | |
985 | DEFHOOK | |
986 | (builtin_vec_perm_ok, | |
987 | "", | |
988 | bool, (tree vec_type, tree mask), | |
989 | hook_bool_tree_tree_true) | |
990 | ||
991 | /* Return true if the target supports misaligned store/load of a | |
992 | specific factor denoted in the third parameter. The last parameter | |
993 | is true if the access is defined in a packed struct. */ | |
994 | DEFHOOK | |
995 | (support_vector_misalignment, | |
996 | "", | |
997 | bool, | |
998 | (enum machine_mode mode, const_tree type, int misalignment, bool is_packed), | |
999 | default_builtin_support_vector_misalignment) | |
1000 | ||
cc4b5170 RG |
1001 | /* Returns the preferred mode for SIMD operations for the specified |
1002 | scalar mode. */ | |
26983c22 | 1003 | DEFHOOK |
cc4b5170 | 1004 | (preferred_simd_mode, |
26983c22 | 1005 | "", |
cc4b5170 | 1006 | enum machine_mode, |
26983c22 | 1007 | (enum machine_mode mode), |
cc4b5170 | 1008 | default_preferred_simd_mode) |
26983c22 | 1009 | |
767f865f RG |
1010 | /* Returns a mask of vector sizes to iterate over when auto-vectorizing |
1011 | after processing the preferred one derived from preferred_simd_mode. */ | |
1012 | DEFHOOK | |
1013 | (autovectorize_vector_sizes, | |
1014 | "", | |
1015 | unsigned int, | |
1016 | (void), | |
1017 | default_autovectorize_vector_sizes) | |
1018 | ||
38f8b050 JR |
1019 | HOOK_VECTOR_END (vectorize) |
1020 | ||
1021 | #undef HOOK_PREFIX | |
1022 | #define HOOK_PREFIX "TARGET_" | |
1023 | ||
1024 | /* The initial value of target_flags. */ | |
1025 | DEFHOOKPOD | |
1026 | (default_target_flags, | |
1027 | "", | |
1028 | int, 0) | |
1029 | ||
1030 | /* Allow target specific overriding of option settings after options have | |
1031 | been changed by an attribute or pragma or when it is reset at the | |
1032 | end of the code affected by an attribute or pragma. */ | |
1033 | DEFHOOK | |
1034 | (override_options_after_change, | |
1035 | "", | |
1036 | void, (void), | |
1037 | hook_void_void) | |
1038 | ||
1039 | /* Handle target switch CODE (an OPT_* value). ARG is the argument | |
1040 | passed to the switch; it is NULL if no argument was. VALUE is the | |
1041 | value of ARG if CODE specifies a UInteger option, otherwise it is | |
1042 | 1 if the positive form of the switch was used and 0 if the negative | |
1043 | form was. Return true if the switch was valid. */ | |
1044 | DEFHOOK | |
1045 | (handle_option, | |
1046 | "", | |
1047 | bool, (size_t code, const char *arg, int value), | |
1048 | hook_bool_size_t_constcharptr_int_true) | |
1049 | ||
38f8b050 JR |
1050 | /* Display extra, target specific information in response to a |
1051 | --target-help switch. */ | |
1052 | DEFHOOK | |
1053 | (help, | |
1054 | "", | |
1055 | void, (void), NULL) | |
1056 | ||
1057 | DEFHOOK_UNDOC | |
1058 | (eh_return_filter_mode, | |
1059 | "Return machine mode for filter value.", | |
1060 | enum machine_mode, (void), | |
1061 | default_eh_return_filter_mode) | |
1062 | ||
1063 | /* Return machine mode for libgcc expanded cmp instructions. */ | |
1064 | DEFHOOK | |
1065 | (libgcc_cmp_return_mode, | |
1066 | "", | |
1067 | enum machine_mode, (void), | |
1068 | default_libgcc_cmp_return_mode) | |
1069 | ||
1070 | /* Return machine mode for libgcc expanded shift instructions. */ | |
1071 | DEFHOOK | |
1072 | (libgcc_shift_count_mode, | |
1073 | "", | |
1074 | enum machine_mode, (void), | |
1075 | default_libgcc_shift_count_mode) | |
1076 | ||
1077 | /* Return machine mode to be used for _Unwind_Word type. */ | |
1078 | DEFHOOK | |
1079 | (unwind_word_mode, | |
1080 | "", | |
1081 | enum machine_mode, (void), | |
1082 | default_unwind_word_mode) | |
1083 | ||
1084 | /* Given two decls, merge their attributes and return the result. */ | |
1085 | DEFHOOK | |
1086 | (merge_decl_attributes, | |
1087 | "", | |
1088 | tree, (tree olddecl, tree newdecl), | |
1089 | merge_decl_attributes) | |
1090 | ||
1091 | /* Given two types, merge their attributes and return the result. */ | |
1092 | DEFHOOK | |
1093 | (merge_type_attributes, | |
1094 | "", | |
1095 | tree, (tree type1, tree type2), | |
1096 | merge_type_attributes) | |
1097 | ||
1098 | /* Table of machine attributes and functions to handle them. | |
1099 | Ignored if NULL. */ | |
1100 | DEFHOOKPOD | |
1101 | (attribute_table, | |
1102 | "", | |
1103 | const struct attribute_spec *, NULL) | |
1104 | ||
1105 | /* Return true iff attribute NAME expects a plain identifier as its first | |
1106 | argument. */ | |
1107 | DEFHOOK | |
1108 | (attribute_takes_identifier_p, | |
1109 | "", | |
1110 | bool, (const_tree name), | |
1111 | hook_bool_const_tree_false) | |
1112 | ||
1113 | /* Return zero if the attributes on TYPE1 and TYPE2 are incompatible, | |
1114 | one if they are compatible and two if they are nearly compatible | |
1115 | (which causes a warning to be generated). */ | |
1116 | DEFHOOK | |
1117 | (comp_type_attributes, | |
1118 | "", | |
1119 | int, (const_tree type1, const_tree type2), | |
1120 | hook_int_const_tree_const_tree_1) | |
1121 | ||
1122 | /* Assign default attributes to the newly defined TYPE. */ | |
1123 | DEFHOOK | |
1124 | (set_default_type_attributes, | |
1125 | "", | |
1126 | void, (tree type), | |
1127 | hook_void_tree) | |
1128 | ||
1129 | /* Insert attributes on the newly created DECL. */ | |
1130 | DEFHOOK | |
1131 | (insert_attributes, | |
1132 | "", | |
1133 | void, (tree node, tree *attr_ptr), | |
1134 | hook_void_tree_treeptr) | |
1135 | ||
1136 | /* Return true if FNDECL (which has at least one machine attribute) | |
1137 | can be inlined despite its machine attributes, false otherwise. */ | |
1138 | DEFHOOK | |
1139 | (function_attribute_inlinable_p, | |
1140 | "", | |
1141 | bool, (const_tree fndecl), | |
1142 | hook_bool_const_tree_false) | |
1143 | ||
1144 | /* Return true if bitfields in RECORD_TYPE should follow the | |
1145 | Microsoft Visual C++ bitfield layout rules. */ | |
1146 | DEFHOOK | |
1147 | (ms_bitfield_layout_p, | |
1148 | "", | |
1149 | bool, (const_tree record_type), | |
1150 | hook_bool_const_tree_false) | |
1151 | ||
2e681adf JR |
1152 | /* For now this is only an interface to WORDS_BIG_ENDIAN for |
1153 | target-independent code like the front ends, need performance testing | |
1154 | before switching completely to the target hook. */ | |
1155 | DEFHOOK_UNDOC | |
1156 | (words_big_endian, | |
1157 | "", | |
1158 | bool, (void), | |
1159 | targhook_words_big_endian) | |
1160 | ||
1161 | /* Likewise for FLOAT_WORDS_BIG_ENDIAN. */ | |
1162 | DEFHOOK_UNDOC | |
1163 | (float_words_big_endian, | |
1164 | "", | |
1165 | bool, (void), | |
1166 | targhook_float_words_big_endian) | |
1167 | ||
38f8b050 JR |
1168 | /* True if the target supports decimal floating point. */ |
1169 | DEFHOOK | |
1170 | (decimal_float_supported_p, | |
1171 | "", | |
1172 | bool, (void), | |
1173 | default_decimal_float_supported_p) | |
1174 | ||
1175 | /* True if the target supports fixed-point. */ | |
1176 | DEFHOOK | |
1177 | (fixed_point_supported_p, | |
1178 | "", | |
1179 | bool, (void), | |
1180 | default_fixed_point_supported_p) | |
1181 | ||
1182 | /* Return true if anonymous bitfields affect structure alignment. */ | |
1183 | DEFHOOK | |
1184 | (align_anon_bitfield, | |
1185 | "", | |
1186 | bool, (void), | |
1187 | hook_bool_void_false) | |
1188 | ||
1189 | /* Return true if volatile bitfields should use the narrowest type possible. | |
1190 | Return false if they should use the container type. */ | |
1191 | DEFHOOK | |
1192 | (narrow_volatile_bitfield, | |
1193 | "", | |
1194 | bool, (void), | |
1195 | hook_bool_void_false) | |
1196 | ||
1197 | /* Set up target-specific built-in functions. */ | |
1198 | DEFHOOK | |
1199 | (init_builtins, | |
1200 | "", | |
1201 | void, (void), | |
1202 | hook_void_void) | |
1203 | ||
1204 | /* Initialize (if INITIALIZE_P is true) and return the target-specific | |
1205 | built-in function decl for CODE. | |
1206 | Return NULL if that is not possible. Return error_mark_node if CODE | |
1207 | is outside of the range of valid target builtin function codes. */ | |
1208 | DEFHOOK | |
1209 | (builtin_decl, | |
1210 | "", | |
1211 | tree, (unsigned code, bool initialize_p), NULL) | |
1212 | ||
1213 | /* Expand a target-specific builtin. */ | |
1214 | DEFHOOK | |
1215 | (expand_builtin, | |
1216 | "", | |
1217 | rtx, | |
1218 | (tree exp, rtx target, rtx subtarget, enum machine_mode mode, int ignore), | |
1219 | default_expand_builtin) | |
1220 | ||
1221 | /* Select a replacement for a target-specific builtin. This is done | |
1222 | *before* regular type checking, and so allows the target to | |
1223 | implement a crude form of function overloading. The result is a | |
1224 | complete expression that implements the operation. PARAMS really | |
1225 | has type VEC(tree,gc)*, but we don't want to include tree.h here. */ | |
d66f5459 | 1226 | DEFHOOK |
38f8b050 JR |
1227 | (resolve_overloaded_builtin, |
1228 | "", | |
d66f5459 | 1229 | tree, (unsigned int /*location_t*/ loc, tree fndecl, void *arglist), NULL) |
38f8b050 JR |
1230 | |
1231 | /* Fold a target-specific builtin. */ | |
08914aaa | 1232 | DEFHOOK |
38f8b050 JR |
1233 | (fold_builtin, |
1234 | "", | |
08914aaa | 1235 | tree, (tree fndecl, int n_args, tree *argp, bool ignore), |
38f8b050 JR |
1236 | hook_tree_tree_int_treep_bool_null) |
1237 | ||
1238 | /* Returns a code for a target-specific builtin that implements | |
1239 | reciprocal of the function, or NULL_TREE if not available. */ | |
89356d17 | 1240 | DEFHOOK |
38f8b050 JR |
1241 | (builtin_reciprocal, |
1242 | "", | |
89356d17 | 1243 | tree, (unsigned fn, bool md_fn, bool sqrt), |
38f8b050 JR |
1244 | default_builtin_reciprocal) |
1245 | ||
1246 | /* For a vendor-specific TYPE, return a pointer to a statically-allocated | |
1247 | string containing the C++ mangling for TYPE. In all other cases, return | |
1248 | NULL. */ | |
1249 | DEFHOOK | |
1250 | (mangle_type, | |
1251 | "", | |
1252 | const char *, (const_tree type), | |
1253 | hook_constcharptr_const_tree_null) | |
1254 | ||
1255 | /* Make any adjustments to libfunc names needed for this target. */ | |
1256 | DEFHOOK | |
1257 | (init_libfuncs, | |
1258 | "", | |
1259 | void, (void), | |
1260 | hook_void_void) | |
1261 | ||
1262 | /* Given a decl, a section name, and whether the decl initializer | |
1263 | has relocs, choose attributes for the section. */ | |
1264 | /* ??? Should be merged with SELECT_SECTION and UNIQUE_SECTION. */ | |
1265 | DEFHOOK | |
1266 | (section_type_flags, | |
1267 | "", | |
1268 | unsigned int, (tree decl, const char *name, int reloc), | |
1269 | default_section_type_flags) | |
1270 | ||
1271 | /* True if new jumps cannot be created, to replace existing ones or | |
1272 | not, at the current point in the compilation. */ | |
1273 | DEFHOOK | |
1274 | (cannot_modify_jumps_p, | |
1275 | "", | |
1276 | bool, (void), | |
1277 | hook_bool_void_false) | |
1278 | ||
1279 | /* Return a register class for which branch target register | |
1280 | optimizations should be applied. */ | |
1281 | DEFHOOK | |
1282 | (branch_target_register_class, | |
1283 | "", | |
a87cf97e | 1284 | reg_class_t, (void), |
38f8b050 JR |
1285 | default_branch_target_register_class) |
1286 | ||
1287 | /* Return true if branch target register optimizations should include | |
1288 | callee-saved registers that are not already live during the current | |
1289 | function. AFTER_PE_GEN is true if prologues and epilogues have | |
1290 | already been generated. */ | |
1291 | DEFHOOK | |
1292 | (branch_target_register_callee_saved, | |
1293 | "", | |
1294 | bool, (bool after_prologue_epilogue_gen), | |
1295 | hook_bool_bool_false) | |
1296 | ||
1297 | /* Return true if the target supports conditional execution. */ | |
1298 | DEFHOOK | |
1299 | (have_conditional_execution, | |
1300 | "", | |
1301 | bool, (void), | |
1302 | default_have_conditional_execution) | |
1303 | ||
1304 | /* Return a new value for loop unroll size. */ | |
1305 | DEFHOOK | |
1306 | (loop_unroll_adjust, | |
1307 | "", | |
1308 | unsigned, (unsigned nunroll, struct loop *loop), | |
1309 | NULL) | |
1310 | ||
1311 | /* True if the constant X cannot be placed in the constant pool. */ | |
1312 | DEFHOOK | |
1313 | (cannot_force_const_mem, | |
1314 | "", | |
1315 | bool, (rtx x), | |
1316 | hook_bool_rtx_false) | |
1317 | ||
1318 | DEFHOOK_UNDOC | |
1319 | (cannot_copy_insn_p, | |
1320 | "True if the insn @var{x} cannot be duplicated.", | |
1321 | bool, (rtx), NULL) | |
1322 | ||
1323 | /* True if X is considered to be commutative. */ | |
1324 | DEFHOOK | |
1325 | (commutative_p, | |
1326 | "", | |
1327 | bool, (const_rtx x, int outer_code), | |
1328 | hook_bool_const_rtx_commutative_p) | |
1329 | ||
1330 | /* True if ADDR is an address-expression whose effect depends | |
1331 | on the mode of the memory reference it is used in. */ | |
1332 | DEFHOOK | |
1333 | (mode_dependent_address_p, | |
1334 | "", | |
1335 | bool, (const_rtx addr), | |
1336 | default_mode_dependent_address_p) | |
1337 | ||
1338 | /* Given an invalid address X for a given machine mode, try machine-specific | |
1339 | ways to make it legitimate. Return X or an invalid address on failure. */ | |
1340 | DEFHOOK | |
1341 | (legitimize_address, | |
1342 | "", | |
1343 | rtx, (rtx x, rtx oldx, enum machine_mode mode), | |
1344 | default_legitimize_address) | |
1345 | ||
1346 | /* Given an address RTX, undo the effects of LEGITIMIZE_ADDRESS. */ | |
1347 | DEFHOOK | |
1348 | (delegitimize_address, | |
1349 | "", | |
1350 | rtx, (rtx x), | |
1351 | delegitimize_mem_from_attrs) | |
1352 | ||
1353 | /* Given an address RTX, say whether it is valid. */ | |
1354 | DEFHOOK | |
1355 | (legitimate_address_p, | |
1356 | "", | |
1357 | bool, (enum machine_mode mode, rtx x, bool strict), | |
1358 | default_legitimate_address_p) | |
1359 | ||
1360 | /* True if the given constant can be put into an object_block. */ | |
1361 | DEFHOOK | |
1362 | (use_blocks_for_constant_p, | |
1363 | "", | |
1364 | bool, (enum machine_mode mode, const_rtx x), | |
1365 | hook_bool_mode_const_rtx_false) | |
1366 | ||
1367 | /* The minimum and maximum byte offsets for anchored addresses. */ | |
1368 | DEFHOOKPOD | |
1369 | (min_anchor_offset, | |
1370 | "", | |
1371 | HOST_WIDE_INT, 0) | |
1372 | ||
1373 | DEFHOOKPOD | |
1374 | (max_anchor_offset, | |
1375 | "", | |
1376 | HOST_WIDE_INT, 0) | |
1377 | ||
1378 | /* True if section anchors can be used to access the given symbol. */ | |
1379 | DEFHOOK | |
1380 | (use_anchors_for_symbol_p, | |
1381 | "", | |
1382 | bool, (const_rtx x), | |
1383 | default_use_anchors_for_symbol_p) | |
1384 | ||
1385 | /* True if it is OK to do sibling call optimization for the specified | |
1386 | call expression EXP. DECL will be the called function, or NULL if | |
1387 | this is an indirect call. */ | |
1388 | DEFHOOK | |
1389 | (function_ok_for_sibcall, | |
1390 | "", | |
1391 | bool, (tree decl, tree exp), | |
1392 | hook_bool_tree_tree_false) | |
1393 | ||
1394 | /* Establish appropriate back-end context for processing the function | |
1395 | FNDECL. The argument might be NULL to indicate processing at top | |
1396 | level, outside of any function scope. */ | |
1397 | DEFHOOK | |
1398 | (set_current_function, | |
1399 | "", | |
1400 | void, (tree decl), hook_void_tree) | |
1401 | ||
1402 | /* True if EXP should be placed in a "small data" section. */ | |
1403 | DEFHOOK | |
1404 | (in_small_data_p, | |
1405 | "", | |
1406 | bool, (const_tree exp), | |
1407 | hook_bool_const_tree_false) | |
1408 | ||
1409 | /* True if EXP names an object for which name resolution must resolve | |
1410 | to the current executable or shared library. */ | |
1411 | DEFHOOK | |
1412 | (binds_local_p, | |
1413 | "", | |
1414 | bool, (const_tree exp), | |
1415 | default_binds_local_p) | |
1416 | ||
3c5273a9 KT |
1417 | /* Check if profiling code is before or after prologue. */ |
1418 | DEFHOOK | |
1419 | (profile_before_prologue, | |
1420 | "It returns true if target wants profile code emitted before prologue.\n\n\ | |
1421 | The default version of this hook use the target macro\n\ | |
1422 | @code{PROFILE_BEFORE_PROLOGUE}.", | |
1423 | bool, (void), | |
1424 | default_profile_before_prologue) | |
1425 | ||
38f8b050 JR |
1426 | /* Modify and return the identifier of a DECL's external name, |
1427 | originally identified by ID, as required by the target, | |
1428 | (eg, append @nn to windows32 stdcall function names). | |
1429 | The default is to return ID without modification. */ | |
1430 | DEFHOOK | |
1431 | (mangle_decl_assembler_name, | |
1432 | "", | |
1433 | tree, (tree decl, tree id), | |
1434 | default_mangle_decl_assembler_name) | |
1435 | ||
1436 | /* Do something target-specific to record properties of the DECL into | |
1437 | the associated SYMBOL_REF. */ | |
1438 | DEFHOOK | |
1439 | (encode_section_info, | |
1440 | "", | |
1441 | void, (tree decl, rtx rtl, int new_decl_p), | |
1442 | default_encode_section_info) | |
1443 | ||
1444 | /* Undo the effects of encode_section_info on the symbol string. */ | |
1445 | DEFHOOK | |
1446 | (strip_name_encoding, | |
1447 | "", | |
1448 | const char *, (const char *name), | |
1449 | default_strip_name_encoding) | |
1450 | ||
1451 | /* If shift optabs for MODE are known to always truncate the shift count, | |
1452 | return the mask that they apply. Return 0 otherwise. */ | |
1453 | DEFHOOK | |
1454 | (shift_truncation_mask, | |
1455 | "", | |
1456 | unsigned HOST_WIDE_INT, (enum machine_mode mode), | |
1457 | default_shift_truncation_mask) | |
1458 | ||
1459 | /* Return the number of divisions in the given MODE that should be present, | |
1460 | so that it is profitable to turn the division into a multiplication by | |
1461 | the reciprocal. */ | |
1462 | DEFHOOK | |
1463 | (min_divisions_for_recip_mul, | |
1464 | "", | |
1465 | unsigned int, (enum machine_mode mode), | |
1466 | default_min_divisions_for_recip_mul) | |
1467 | ||
1468 | /* If the representation of integral MODE is such that values are | |
1469 | always sign-extended to a wider mode MODE_REP then return | |
1470 | SIGN_EXTEND. Return UNKNOWN otherwise. */ | |
1471 | /* Note that the return type ought to be RTX_CODE, but that's not | |
1472 | necessarily defined at this point. */ | |
1473 | DEFHOOK | |
1474 | (mode_rep_extended, | |
1475 | "", | |
1476 | int, (enum machine_mode mode, enum machine_mode rep_mode), | |
1477 | default_mode_rep_extended) | |
1478 | ||
1479 | /* True if MODE is valid for a pointer in __attribute__((mode("MODE"))). */ | |
1480 | DEFHOOK | |
1481 | (valid_pointer_mode, | |
1482 | "", | |
1483 | bool, (enum machine_mode mode), | |
1484 | default_valid_pointer_mode) | |
1485 | ||
1486 | /* Support for named address spaces. */ | |
1487 | #undef HOOK_PREFIX | |
1488 | #define HOOK_PREFIX "TARGET_ADDR_SPACE_" | |
1489 | HOOK_VECTOR (TARGET_ADDR_SPACE_HOOKS, addr_space) | |
1490 | ||
1491 | /* MODE to use for a pointer into another address space. */ | |
1492 | DEFHOOK | |
1493 | (pointer_mode, | |
1494 | "", | |
1495 | enum machine_mode, (addr_space_t address_space), | |
1496 | default_addr_space_pointer_mode) | |
1497 | ||
1498 | /* MODE to use for an address in another address space. */ | |
1499 | DEFHOOK | |
1500 | (address_mode, | |
1501 | "", | |
1502 | enum machine_mode, (addr_space_t address_space), | |
1503 | default_addr_space_address_mode) | |
1504 | ||
1505 | /* True if MODE is valid for a pointer in __attribute__((mode("MODE"))) | |
1506 | in another address space. */ | |
1507 | DEFHOOK | |
1508 | (valid_pointer_mode, | |
1509 | "", | |
1510 | bool, (enum machine_mode mode, addr_space_t as), | |
1511 | default_addr_space_valid_pointer_mode) | |
1512 | ||
1513 | /* True if an address is a valid memory address to a given named address | |
1514 | space for a given mode. */ | |
1515 | DEFHOOK | |
1516 | (legitimate_address_p, | |
1517 | "", | |
1518 | bool, (enum machine_mode mode, rtx exp, bool strict, addr_space_t as), | |
1519 | default_addr_space_legitimate_address_p) | |
1520 | ||
1521 | /* Return an updated address to convert an invalid pointer to a named | |
1522 | address space to a valid one. If NULL_RTX is returned use machine | |
1523 | independent methods to make the address valid. */ | |
1524 | DEFHOOK | |
1525 | (legitimize_address, | |
1526 | "", | |
1527 | rtx, (rtx x, rtx oldx, enum machine_mode mode, addr_space_t as), | |
1528 | default_addr_space_legitimize_address) | |
1529 | ||
1530 | /* True if one named address space is a subset of another named address. */ | |
1531 | DEFHOOK | |
1532 | (subset_p, | |
1533 | "", | |
1534 | bool, (addr_space_t superset, addr_space_t subset), | |
1535 | default_addr_space_subset_p) | |
1536 | ||
1537 | /* Function to convert an rtl expression from one address space to another. */ | |
1538 | DEFHOOK | |
1539 | (convert, | |
1540 | "", | |
1541 | rtx, (rtx op, tree from_type, tree to_type), | |
1542 | default_addr_space_convert) | |
1543 | ||
1544 | HOOK_VECTOR_END (addr_space) | |
1545 | ||
1546 | #undef HOOK_PREFIX | |
1547 | #define HOOK_PREFIX "TARGET_" | |
1548 | ||
1549 | /* True if MODE is valid for the target. By "valid", we mean able to | |
1550 | be manipulated in non-trivial ways. In particular, this means all | |
1551 | the arithmetic is supported. */ | |
1552 | DEFHOOK | |
1553 | (scalar_mode_supported_p, | |
1554 | "", | |
1555 | bool, (enum machine_mode mode), | |
1556 | default_scalar_mode_supported_p) | |
1557 | ||
1558 | /* Similarly for vector modes. "Supported" here is less strict. At | |
1559 | least some operations are supported; need to check optabs or builtins | |
1560 | for further details. */ | |
1561 | DEFHOOK | |
1562 | (vector_mode_supported_p, | |
1563 | "", | |
1564 | bool, (enum machine_mode mode), | |
1565 | hook_bool_mode_false) | |
1566 | ||
1567 | /* Compute cost of moving data from a register of class FROM to one of | |
1568 | TO, using MODE. */ | |
1569 | DEFHOOK | |
1570 | (register_move_cost, | |
1571 | "", | |
a87cf97e | 1572 | int, (enum machine_mode mode, reg_class_t from, reg_class_t to), |
38f8b050 JR |
1573 | default_register_move_cost) |
1574 | ||
1575 | /* Compute cost of moving registers to/from memory. */ | |
1576 | /* ??? Documenting the argument types for this hook requires a GFDL | |
1577 | license grant. Also, the documentation uses a different name for RCLASS. */ | |
911852ff | 1578 | DEFHOOK |
38f8b050 JR |
1579 | (memory_move_cost, |
1580 | "", | |
a87cf97e | 1581 | int, (enum machine_mode mode, reg_class_t rclass, bool in), |
38f8b050 JR |
1582 | default_memory_move_cost) |
1583 | ||
1584 | /* True for MODE if the target expects that registers in this mode will | |
1585 | be allocated to registers in a small register class. The compiler is | |
1586 | allowed to use registers explicitly used in the rtl as spill registers | |
1587 | but it should prevent extending the lifetime of these registers. */ | |
1588 | DEFHOOK | |
1589 | (small_register_classes_for_mode_p, | |
1590 | "", | |
1591 | bool, (enum machine_mode mode), | |
1592 | hook_bool_mode_false) | |
1593 | ||
1594 | /* Compute a (partial) cost for rtx X. Return true if the complete | |
1595 | cost has been computed, and false if subexpressions should be | |
1596 | scanned. In either case, *TOTAL contains the cost result. */ | |
1597 | /* Note that CODE and OUTER_CODE ought to be RTX_CODE, but that's | |
1598 | not necessarily defined at this point. */ | |
1599 | DEFHOOK | |
1600 | (rtx_costs, | |
1601 | "", | |
1602 | bool, (rtx x, int code, int outer_code, int *total, bool speed), | |
1603 | hook_bool_rtx_int_int_intp_bool_false) | |
1604 | ||
1605 | /* Compute the cost of X, used as an address. Never called with | |
1606 | invalid addresses. */ | |
1607 | DEFHOOK | |
1608 | (address_cost, | |
1609 | "", | |
1610 | int, (rtx address, bool speed), | |
1611 | default_address_cost) | |
1612 | ||
1613 | /* Return where to allocate pseudo for a given hard register initial value. */ | |
1614 | DEFHOOK | |
1615 | (allocate_initial_value, | |
1616 | "", | |
1617 | rtx, (rtx hard_reg), NULL) | |
1618 | ||
1619 | /* Return nonzero if evaluating UNSPEC[_VOLATILE] X might cause a trap. | |
1620 | FLAGS has the same meaning as in rtlanal.c: may_trap_p_1. */ | |
1621 | DEFHOOK | |
1622 | (unspec_may_trap_p, | |
1623 | "", | |
1624 | int, (const_rtx x, unsigned flags), | |
1625 | default_unspec_may_trap_p) | |
1626 | ||
1627 | /* Given a register, this hook should return a parallel of registers | |
1628 | to represent where to find the register pieces. Define this hook | |
1629 | if the register and its mode are represented in Dwarf in | |
1630 | non-contiguous locations, or if the register should be | |
1631 | represented in more than one register in Dwarf. Otherwise, this | |
1632 | hook should return NULL_RTX. */ | |
1633 | DEFHOOK | |
1634 | (dwarf_register_span, | |
1635 | "", | |
1636 | rtx, (rtx reg), | |
1637 | hook_rtx_rtx_null) | |
1638 | ||
1639 | /* If expand_builtin_init_dwarf_reg_sizes needs to fill in table | |
1640 | entries not corresponding directly to registers below | |
1641 | FIRST_PSEUDO_REGISTER, this hook should generate the necessary | |
1642 | code, given the address of the table. */ | |
1643 | DEFHOOK | |
1644 | (init_dwarf_reg_sizes_extra, | |
1645 | "", | |
1646 | void, (tree address), | |
1647 | hook_void_tree) | |
1648 | ||
1649 | /* Fetch the fixed register(s) which hold condition codes, for | |
1650 | targets where it makes sense to look for duplicate assignments to | |
1651 | the condition codes. This should return true if there is such a | |
1652 | register, false otherwise. The arguments should be set to the | |
1653 | fixed register numbers. Up to two condition code registers are | |
1654 | supported. If there is only one for this target, the int pointed | |
1655 | at by the second argument should be set to -1. */ | |
1656 | DEFHOOK | |
1657 | (fixed_condition_code_regs, | |
1658 | "", | |
1659 | bool, (unsigned int *p1, unsigned int *p2), | |
1660 | hook_bool_uintp_uintp_false) | |
1661 | ||
1662 | /* If two condition code modes are compatible, return a condition | |
1663 | code mode which is compatible with both, such that a comparison | |
1664 | done in the returned mode will work for both of the original | |
1665 | modes. If the condition code modes are not compatible, return | |
1666 | VOIDmode. */ | |
1667 | DEFHOOK | |
1668 | (cc_modes_compatible, | |
1669 | "", | |
1670 | enum machine_mode, (enum machine_mode m1, enum machine_mode m2), | |
1671 | default_cc_modes_compatible) | |
1672 | ||
1673 | /* Do machine-dependent code transformations. Called just before | |
1674 | delayed-branch scheduling. */ | |
1675 | DEFHOOK | |
1676 | (machine_dependent_reorg, | |
1677 | "", | |
1678 | void, (void), NULL) | |
1679 | ||
1680 | /* Create the __builtin_va_list type. */ | |
1681 | DEFHOOK | |
1682 | (build_builtin_va_list, | |
1683 | "", | |
1684 | tree, (void), | |
1685 | std_build_builtin_va_list) | |
1686 | ||
1687 | /* Enumerate the va list variants. */ | |
07a5b2bc | 1688 | DEFHOOK |
38f8b050 JR |
1689 | (enum_va_list_p, |
1690 | "", | |
1691 | int, (int idx, const char **pname, tree *ptree), | |
1692 | NULL) | |
1693 | ||
1694 | /* Get the cfun/fndecl calling abi __builtin_va_list type. */ | |
1695 | DEFHOOK | |
1696 | (fn_abi_va_list, | |
1697 | "", | |
1698 | tree, (tree fndecl), | |
1699 | std_fn_abi_va_list) | |
1700 | ||
1701 | /* Get the __builtin_va_list type dependent on input type. */ | |
1702 | DEFHOOK | |
1703 | (canonical_va_list_type, | |
1704 | "", | |
1705 | tree, (tree type), | |
1706 | std_canonical_va_list_type) | |
1707 | ||
1708 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
1709 | DEFHOOK_UNDOC | |
1710 | (expand_builtin_va_start, | |
1711 | "Expand the @code{__builtin_va_start} builtin.", | |
1712 | void, (tree valist, rtx nextarg), NULL) | |
1713 | ||
1714 | /* Gimplifies a VA_ARG_EXPR. */ | |
1715 | DEFHOOK | |
1716 | (gimplify_va_arg_expr, | |
1717 | "", | |
1718 | tree, (tree valist, tree type, gimple_seq *pre_p, gimple_seq *post_p), | |
1719 | std_gimplify_va_arg_expr) | |
1720 | ||
1721 | /* Validity-checking routines for PCH files, target-specific. | |
1722 | get_pch_validity returns a pointer to the data to be stored, | |
1723 | and stores the size in its argument. pch_valid_p gets the same | |
1724 | information back and returns NULL if the PCH is valid, | |
1725 | or an error message if not. */ | |
1726 | DEFHOOK | |
1727 | (get_pch_validity, | |
1728 | "", | |
1729 | void *, (size_t *sz), | |
1730 | default_get_pch_validity) | |
1731 | ||
1732 | DEFHOOK | |
1733 | (pch_valid_p, | |
1734 | "", | |
1735 | const char *, (const void *data, size_t sz), | |
1736 | default_pch_valid_p) | |
1737 | ||
1738 | /* If nonnull, this function checks whether a PCH file with the | |
1739 | given set of target flags can be used. It returns NULL if so, | |
1740 | otherwise it returns an error message. */ | |
1741 | DEFHOOK | |
1742 | (check_pch_target_flags, | |
1743 | "", | |
1744 | const char *, (int pch_flags), NULL) | |
1745 | ||
1746 | /* True if the compiler should give an enum type only as many | |
1747 | bytes as it takes to represent the range of possible values of | |
1748 | that type. */ | |
1749 | DEFHOOK | |
1750 | (default_short_enums, | |
1751 | "", | |
1752 | bool, (void), | |
1753 | hook_bool_void_false) | |
1754 | ||
1755 | /* This target hook returns an rtx that is used to store the address | |
1756 | of the current frame into the built-in setjmp buffer. */ | |
1757 | DEFHOOK | |
1758 | (builtin_setjmp_frame_value, | |
1759 | "", | |
1760 | rtx, (void), | |
1761 | default_builtin_setjmp_frame_value) | |
1762 | ||
1763 | /* This target hook should add STRING_CST trees for any hard regs | |
1764 | the port wishes to automatically clobber for an asm. */ | |
1765 | DEFHOOK | |
1766 | (md_asm_clobbers, | |
1767 | "", | |
1768 | tree, (tree outputs, tree inputs, tree clobbers), | |
1769 | hook_tree_tree_tree_tree_3rd_identity) | |
1770 | ||
1771 | /* This target hook allows the backend to specify a calling convention | |
1772 | in the debug information. This function actually returns an | |
1773 | enum dwarf_calling_convention, but because of forward declarations | |
1774 | and not wanting to include dwarf2.h everywhere target.h is included | |
1775 | the function is being declared as an int. */ | |
1776 | DEFHOOK | |
1777 | (dwarf_calling_convention, | |
1778 | "", | |
1779 | int, (const_tree function), | |
1780 | hook_int_const_tree_0) | |
1781 | ||
1782 | /* This target hook allows the backend to emit frame-related insns that | |
1783 | contain UNSPECs or UNSPEC_VOLATILEs. The call frame debugging info | |
1784 | engine will invoke it on insns of the form | |
1785 | (set (reg) (unspec [...] UNSPEC_INDEX)) | |
1786 | and | |
1787 | (set (reg) (unspec_volatile [...] UNSPECV_INDEX)) | |
1788 | to let the backend emit the call frame instructions. */ | |
1789 | DEFHOOK | |
1790 | (dwarf_handle_frame_unspec, | |
1791 | "", | |
1792 | void, (const char *label, rtx pattern, int index), NULL) | |
1793 | ||
1794 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
1795 | DEFHOOK_UNDOC | |
1796 | (stdarg_optimize_hook, | |
1797 | "Perform architecture specific checking of statements gimplified\ | |
1798 | from @code{VA_ARG_EXPR}. @var{stmt} is the statement. Returns true if\ | |
1799 | the statement doesn't need to be checked for @code{va_list} references.", | |
1800 | bool, (struct stdarg_info *ai, const_gimple stmt), NULL) | |
1801 | ||
1802 | /* This target hook allows the operating system to override the DECL | |
1803 | that represents the external variable that contains the stack | |
1804 | protection guard variable. The type of this DECL is ptr_type_node. */ | |
1805 | DEFHOOK | |
1806 | (stack_protect_guard, | |
1807 | "", | |
1808 | tree, (void), | |
1809 | default_stack_protect_guard) | |
1810 | ||
1811 | /* This target hook allows the operating system to override the CALL_EXPR | |
1812 | that is invoked when a check vs the guard variable fails. */ | |
1813 | DEFHOOK | |
1814 | (stack_protect_fail, | |
1815 | "", | |
1816 | tree, (void), | |
1817 | default_external_stack_protect_fail) | |
1818 | ||
7458026b ILT |
1819 | DEFHOOK |
1820 | (supports_split_stack, | |
1821 | "Whether this target supports splitting the stack. This is called\ | |
1822 | after options have been parsed, so the target may reject splitting\ | |
1823 | the stack in some configurations. The default version of this hook\ | |
1824 | returns false. If @var{report} is true, this function may issue a warning\ | |
1825 | or error; if @var{report} is false, it must simply return a value", | |
1826 | bool, (bool), | |
1827 | hook_bool_bool_false) | |
1828 | ||
38f8b050 JR |
1829 | /* Returns NULL if target supports the insn within a doloop block, |
1830 | otherwise it returns an error message. */ | |
1831 | DEFHOOK | |
1832 | (invalid_within_doloop, | |
1833 | "", | |
1834 | const char *, (const_rtx insn), | |
1835 | default_invalid_within_doloop) | |
1836 | ||
1837 | DEFHOOK | |
1838 | (valid_dllimport_attribute_p, | |
1839 | "@var{decl} is a variable or function with @code{__attribute__((dllimport))}\ | |
1840 | specified. Use this hook if the target needs to add extra validation\ | |
1841 | checks to @code{handle_dll_attribute}.", | |
1842 | bool, (const_tree decl), | |
1843 | hook_bool_const_tree_true) | |
1844 | ||
1845 | /* If non-zero, align constant anchors in CSE to a multiple of this | |
1846 | value. */ | |
1847 | DEFHOOKPOD | |
1848 | (const_anchor, | |
1849 | "", | |
1850 | unsigned HOST_WIDE_INT, 0) | |
1851 | ||
1852 | /* Functions relating to calls - argument passing, returns, etc. */ | |
1853 | /* Members of struct call have no special macro prefix. */ | |
1854 | HOOK_VECTOR (TARGET_CALLS, calls) | |
1855 | ||
1856 | DEFHOOK | |
1857 | (promote_function_mode, | |
1858 | "", | |
1859 | enum machine_mode, (const_tree type, enum machine_mode mode, int *punsignedp, | |
1860 | const_tree funtype, int for_return), | |
1861 | default_promote_function_mode) | |
1862 | ||
1863 | DEFHOOK | |
1864 | (promote_prototypes, | |
1865 | "", | |
1866 | bool, (const_tree fntype), | |
1867 | hook_bool_const_tree_false) | |
1868 | ||
1869 | DEFHOOK | |
1870 | (struct_value_rtx, | |
1871 | "", | |
1872 | rtx, (tree fndecl, int incoming), | |
1873 | hook_rtx_tree_int_null) | |
1874 | DEFHOOK | |
1875 | (return_in_memory, | |
1876 | "", | |
1877 | bool, (const_tree type, const_tree fntype), | |
1878 | default_return_in_memory) | |
1879 | ||
1880 | DEFHOOK | |
1881 | (return_in_msb, | |
1882 | "", | |
1883 | bool, (const_tree type), | |
1884 | hook_bool_const_tree_false) | |
1885 | ||
1886 | /* Return true if a parameter must be passed by reference. TYPE may | |
1887 | be null if this is a libcall. CA may be null if this query is | |
1888 | from __builtin_va_arg. */ | |
ec9f85e5 | 1889 | DEFHOOK |
38f8b050 JR |
1890 | (pass_by_reference, |
1891 | "", | |
1892 | bool, | |
1893 | (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named), | |
1894 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false) | |
1895 | ||
1896 | DEFHOOK | |
1897 | (expand_builtin_saveregs, | |
1898 | "", | |
1899 | rtx, (void), | |
1900 | default_expand_builtin_saveregs) | |
1901 | ||
1902 | /* Returns pretend_argument_size. */ | |
1903 | DEFHOOK | |
1904 | (setup_incoming_varargs, | |
1905 | "", | |
1906 | void, (CUMULATIVE_ARGS *args_so_far, enum machine_mode mode, tree type, | |
1907 | int *pretend_args_size, int second_time), | |
1908 | default_setup_incoming_varargs) | |
1909 | ||
1910 | DEFHOOK | |
1911 | (strict_argument_naming, | |
1912 | "", | |
1913 | bool, (CUMULATIVE_ARGS *ca), | |
1914 | hook_bool_CUMULATIVE_ARGS_false) | |
1915 | ||
1916 | /* Returns true if we should use | |
1917 | targetm.calls.setup_incoming_varargs() and/or | |
1918 | targetm.calls.strict_argument_naming(). */ | |
1919 | DEFHOOK | |
1920 | (pretend_outgoing_varargs_named, | |
1921 | "", | |
1922 | bool, (CUMULATIVE_ARGS *ca), | |
1923 | default_pretend_outgoing_varargs_named) | |
1924 | ||
1925 | /* Given a complex type T, return true if a parameter of type T | |
1926 | should be passed as two scalars. */ | |
1927 | DEFHOOK | |
1928 | (split_complex_arg, | |
1929 | "", | |
1930 | bool, (const_tree type), NULL) | |
1931 | ||
1932 | /* Return true if type T, mode MODE, may not be passed in registers, | |
1933 | but must be passed on the stack. */ | |
1934 | /* ??? This predicate should be applied strictly after pass-by-reference. | |
1935 | Need audit to verify that this is the case. */ | |
1936 | DEFHOOK | |
1937 | (must_pass_in_stack, | |
1938 | "", | |
1939 | bool, (enum machine_mode mode, const_tree type), | |
1940 | must_pass_in_stack_var_size_or_pad) | |
1941 | ||
1942 | /* Return true if type TYPE, mode MODE, which is passed by reference, | |
1943 | should have the object copy generated by the callee rather than | |
1944 | the caller. It is never called for TYPE requiring constructors. */ | |
1945 | DEFHOOK | |
1946 | (callee_copies, | |
1947 | "", | |
1948 | bool, | |
1949 | (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named), | |
1950 | hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false) | |
1951 | ||
1952 | /* Return zero for arguments passed entirely on the stack or entirely | |
1953 | in registers. If passed in both, return the number of bytes passed | |
1954 | in registers; the balance is therefore passed on the stack. */ | |
1955 | DEFHOOK | |
1956 | (arg_partial_bytes, | |
1957 | "", | |
1958 | int, (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type, bool named), | |
1959 | hook_int_CUMULATIVE_ARGS_mode_tree_bool_0) | |
1960 | ||
1961 | /* Update the state in CA to advance past an argument in the | |
1962 | argument list. The values MODE, TYPE, and NAMED describe that | |
1963 | argument. */ | |
1964 | /* ??? tm.texi still only describes the old macro. */ | |
1965 | DEFHOOK_UNDOC | |
1966 | (function_arg_advance, | |
1967 | "", | |
1968 | void, | |
1969 | (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, bool named), | |
1970 | default_function_arg_advance) | |
1971 | ||
1972 | /* Return zero if the argument described by the state of CA should | |
1973 | be placed on a stack, or a hard register in which to store the | |
1974 | argument. The values MODE, TYPE, and NAMED describe that | |
1975 | argument. */ | |
1976 | /* ??? tm.texi still only describes the old macro. */ | |
1977 | DEFHOOK_UNDOC | |
1978 | (function_arg, | |
1979 | "", | |
29e88142 | 1980 | rtx, (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, |
38f8b050 JR |
1981 | bool named), |
1982 | default_function_arg) | |
1983 | ||
1984 | /* Likewise, but for machines with register windows. Return the | |
1985 | location where the argument will appear to the callee. */ | |
1986 | /* ??? tm.texi still only describes the old macro. */ | |
1987 | DEFHOOK_UNDOC | |
1988 | (function_incoming_arg, | |
1989 | "", | |
29e88142 | 1990 | rtx, (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, |
38f8b050 JR |
1991 | bool named), |
1992 | default_function_incoming_arg) | |
1993 | ||
c2ed6cf8 NF |
1994 | DEFHOOK |
1995 | (function_arg_boundary, | |
1996 | "", | |
1997 | unsigned int, (enum machine_mode mode, const_tree type), | |
1998 | default_function_arg_boundary) | |
1999 | ||
38f8b050 JR |
2000 | /* Return the diagnostic message string if function without a prototype |
2001 | is not allowed for this 'val' argument; NULL otherwise. */ | |
2002 | DEFHOOK | |
2003 | (invalid_arg_for_unprototyped_fn, | |
2004 | "", | |
2005 | const char *, (const_tree typelist, const_tree funcdecl, const_tree val), | |
2006 | hook_invalid_arg_for_unprototyped_fn) | |
2007 | ||
2008 | /* Return an rtx for the return value location of the function | |
2009 | specified by FN_DECL_OR_TYPE with a return type of RET_TYPE. */ | |
2010 | DEFHOOK | |
2011 | (function_value, | |
2012 | "", | |
2013 | rtx, (const_tree ret_type, const_tree fn_decl_or_type, bool outgoing), | |
2014 | default_function_value) | |
2015 | ||
2016 | /* Return the rtx for the result of a libcall of mode MODE, | |
2017 | calling the function FN_NAME. */ | |
2018 | DEFHOOK | |
2019 | (libcall_value, | |
2020 | "", | |
2021 | rtx, (enum machine_mode mode, const_rtx fun), | |
2022 | default_libcall_value) | |
2023 | ||
2024 | /* Return true if REGNO is a possible register number for | |
2025 | a function value as seen by the caller. */ | |
2026 | DEFHOOK | |
2027 | (function_value_regno_p, | |
2028 | "", | |
2029 | bool, (const unsigned int regno), | |
2030 | default_function_value_regno_p) | |
2031 | ||
2032 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
2033 | DEFHOOK_UNDOC | |
2034 | (internal_arg_pointer, | |
2035 | "Return an rtx for the argument pointer incoming to the\ | |
2036 | current function.", | |
2037 | rtx, (void), | |
2038 | default_internal_arg_pointer) | |
2039 | ||
2040 | /* Update the current function stack boundary if needed. */ | |
2041 | DEFHOOK | |
2042 | (update_stack_boundary, | |
2043 | "", | |
2044 | void, (void), NULL) | |
2045 | ||
2046 | /* Handle stack alignment and return an rtx for Dynamic Realign | |
2047 | Argument Pointer if necessary. */ | |
2048 | DEFHOOK | |
2049 | (get_drap_rtx, | |
2050 | "", | |
2051 | rtx, (void), NULL) | |
2052 | ||
2053 | /* Return true if all function parameters should be spilled to the | |
2054 | stack. */ | |
2055 | DEFHOOK | |
2056 | (allocate_stack_slots_for_args, | |
2057 | "", | |
2058 | bool, (void), | |
2059 | hook_bool_void_true) | |
2060 | ||
2061 | /* Return an rtx for the static chain for FNDECL. If INCOMING_P is true, | |
2062 | then it should be for the callee; otherwise for the caller. */ | |
2063 | DEFHOOK | |
2064 | (static_chain, | |
2065 | "", | |
2066 | rtx, (const_tree fndecl, bool incoming_p), | |
2067 | default_static_chain) | |
2068 | ||
2069 | /* Fill in the trampoline at MEM with a call to FNDECL and a | |
2070 | static chain value of CHAIN. */ | |
2071 | DEFHOOK | |
2072 | (trampoline_init, | |
2073 | "", | |
2074 | void, (rtx m_tramp, tree fndecl, rtx static_chain), | |
2075 | default_trampoline_init) | |
2076 | ||
2077 | /* Adjust the address of the trampoline in a target-specific way. */ | |
2078 | DEFHOOK | |
2079 | (trampoline_adjust_address, | |
2080 | "", | |
2081 | rtx, (rtx addr), NULL) | |
2082 | ||
2083 | /* Return the number of bytes of its own arguments that a function | |
2084 | pops on returning, or 0 if the function pops no arguments and the | |
2085 | caller must therefore pop them all after the function returns. */ | |
2086 | /* ??? tm.texi has no types for the parameters. */ | |
893d13d5 | 2087 | DEFHOOK |
38f8b050 JR |
2088 | (return_pops_args, |
2089 | "", | |
2090 | int, (tree fundecl, tree funtype, int size), | |
2091 | default_return_pops_args) | |
2092 | ||
ffa88471 SE |
2093 | /* Return a mode wide enough to copy any function value that might be |
2094 | returned. */ | |
2095 | DEFHOOK | |
2096 | (get_raw_result_mode, | |
2097 | "This target hook returns the mode to be used when accessing raw return\ | |
2098 | registers in @code{__builtin_return}. Define this macro if the value\ | |
2099 | in @var{reg_raw_mode} is not correct.", | |
2100 | enum machine_mode, (int regno), | |
2101 | default_get_reg_raw_mode) | |
2102 | ||
2103 | /* Return a mode wide enough to copy any argument value that might be | |
2104 | passed. */ | |
2105 | DEFHOOK | |
2106 | (get_raw_arg_mode, | |
2107 | "This target hook returns the mode to be used when accessing raw argument\ | |
2108 | registers in @code{__builtin_apply_args}. Define this macro if the value\ | |
2109 | in @var{reg_raw_mode} is not correct.", | |
2110 | enum machine_mode, (int regno), | |
2111 | default_get_reg_raw_mode) | |
2112 | ||
38f8b050 JR |
2113 | HOOK_VECTOR_END (calls) |
2114 | ||
2115 | /* Return the diagnostic message string if conversion from FROMTYPE | |
2116 | to TOTYPE is not allowed, NULL otherwise. */ | |
2117 | DEFHOOK | |
2118 | (invalid_conversion, | |
2119 | "", | |
2120 | const char *, (const_tree fromtype, const_tree totype), | |
2121 | hook_constcharptr_const_tree_const_tree_null) | |
2122 | ||
2123 | /* Return the diagnostic message string if the unary operation OP is | |
2124 | not permitted on TYPE, NULL otherwise. */ | |
2125 | DEFHOOK | |
2126 | (invalid_unary_op, | |
2127 | "", | |
2128 | const char *, (int op, const_tree type), | |
2129 | hook_constcharptr_int_const_tree_null) | |
2130 | ||
2131 | /* Return the diagnostic message string if the binary operation OP | |
2132 | is not permitted on TYPE1 and TYPE2, NULL otherwise. */ | |
2133 | DEFHOOK | |
2134 | (invalid_binary_op, | |
2135 | "", | |
2136 | const char *, (int op, const_tree type1, const_tree type2), | |
2137 | hook_constcharptr_int_const_tree_const_tree_null) | |
2138 | ||
2139 | /* Return the diagnostic message string if TYPE is not valid as a | |
2140 | function parameter type, NULL otherwise. */ | |
2141 | DEFHOOK | |
2142 | (invalid_parameter_type, | |
2143 | "", | |
2144 | const char *, (const_tree type), | |
2145 | hook_constcharptr_const_tree_null) | |
2146 | ||
2147 | /* Return the diagnostic message string if TYPE is not valid as a | |
2148 | function return type, NULL otherwise. */ | |
2149 | DEFHOOK | |
2150 | (invalid_return_type, | |
2151 | "", | |
2152 | const char *, (const_tree type), | |
2153 | hook_constcharptr_const_tree_null) | |
2154 | ||
2155 | /* If values of TYPE are promoted to some other type when used in | |
2156 | expressions (analogous to the integer promotions), return that type, | |
2157 | or NULL_TREE otherwise. */ | |
2158 | DEFHOOK | |
2159 | (promoted_type, | |
2160 | "", | |
2161 | tree, (const_tree type), | |
2162 | hook_tree_const_tree_null) | |
2163 | ||
2164 | /* Convert EXPR to TYPE, if target-specific types with special conversion | |
2165 | rules are involved. Return the converted expression, or NULL to apply | |
2166 | the standard conversion rules. */ | |
2167 | DEFHOOK | |
2168 | (convert_to_type, | |
2169 | "", | |
2170 | tree, (tree type, tree expr), | |
2171 | hook_tree_tree_tree_null) | |
2172 | ||
2173 | /* Return the array of IRA cover classes for the current target. */ | |
2174 | DEFHOOK | |
2175 | (ira_cover_classes, | |
2176 | "", | |
a87cf97e | 2177 | const reg_class_t *, (void), |
38f8b050 JR |
2178 | default_ira_cover_classes) |
2179 | ||
2180 | /* Return the class for a secondary reload, and fill in extra information. */ | |
2181 | DEFHOOK | |
2182 | (secondary_reload, | |
2183 | "", | |
a87cf97e JR |
2184 | reg_class_t, |
2185 | (bool in_p, rtx x, reg_class_t reload_class, enum machine_mode reload_mode, | |
38f8b050 JR |
2186 | secondary_reload_info *sri), |
2187 | default_secondary_reload) | |
2188 | ||
fba42e24 AS |
2189 | /* Given an rtx X being reloaded into a reg required to be in class CLASS, |
2190 | return the class of reg to actually use. */ | |
2191 | DEFHOOK | |
2192 | (preferred_reload_class, | |
2193 | "", | |
2194 | reg_class_t, | |
2195 | (rtx x, reg_class_t rclass), | |
2196 | default_preferred_reload_class) | |
2197 | ||
abd26bfb AS |
2198 | /* Like TARGET_PREFERRED_RELOAD_CLASS, but for output reloads instead of |
2199 | input reloads. */ | |
2200 | DEFHOOK | |
2201 | (preferred_output_reload_class, | |
2202 | "", | |
2203 | reg_class_t, | |
2204 | (rtx x, reg_class_t rclass), | |
2205 | default_preferred_output_reload_class) | |
2206 | ||
07b8f0a8 AS |
2207 | DEFHOOK |
2208 | (class_likely_spilled_p, | |
2209 | "", | |
2210 | bool, (reg_class_t rclass), | |
2211 | default_class_likely_spilled_p) | |
2212 | ||
38f8b050 JR |
2213 | /* This target hook allows the backend to perform additional |
2214 | processing while initializing for variable expansion. */ | |
2215 | DEFHOOK | |
2216 | (expand_to_rtl_hook, | |
2217 | "", | |
2218 | void, (void), | |
2219 | hook_void_void) | |
2220 | ||
2221 | /* This target hook allows the backend to perform additional | |
2222 | instantiations on rtx that are not actually in insns yet, | |
2223 | but will be later. */ | |
2224 | DEFHOOK | |
2225 | (instantiate_decls, | |
2226 | "", | |
2227 | void, (void), | |
2228 | hook_void_void) | |
2229 | ||
2230 | /* Return true if is OK to use a hard register REGNO as scratch register | |
2231 | in peephole2. */ | |
2232 | DEFHOOK | |
2233 | (hard_regno_scratch_ok, | |
2234 | "", | |
2235 | bool, (unsigned int regno), | |
2236 | default_hard_regno_scratch_ok) | |
2237 | ||
2238 | /* Return the smallest number of different values for which it is best to | |
2239 | use a jump-table instead of a tree of conditional branches. */ | |
2240 | DEFHOOK | |
2241 | (case_values_threshold, | |
2242 | "", | |
2243 | unsigned int, (void), | |
2244 | default_case_values_threshold) | |
2245 | ||
2246 | /* Retutn true if a function must have and use a frame pointer. */ | |
2247 | DEFHOOK | |
2248 | (frame_pointer_required, | |
2249 | "", | |
2250 | bool, (void), | |
2251 | hook_bool_void_false) | |
2252 | ||
2253 | /* Returns true if the compiler is allowed to try to replace register number | |
2254 | from-reg with register number to-reg. */ | |
2255 | DEFHOOK | |
2256 | (can_eliminate, | |
2257 | "", | |
2258 | bool, (const int from_reg, const int to_reg), | |
2259 | hook_bool_const_int_const_int_true) | |
2260 | ||
5efd84c5 NF |
2261 | /* Modify any or all of fixed_regs, call_used_regs, global_regs, |
2262 | reg_names, and reg_class_contents to account of the vagaries of the | |
2263 | target. */ | |
2264 | DEFHOOK | |
2265 | (conditional_register_usage, | |
2266 | "", | |
2267 | void, (void), | |
2268 | hook_void_void) | |
2269 | ||
38f8b050 JR |
2270 | /* Functions specific to the C family of frontends. */ |
2271 | #undef HOOK_PREFIX | |
2272 | #define HOOK_PREFIX "TARGET_C_" | |
2273 | HOOK_VECTOR (TARGET_C, c) | |
2274 | ||
2275 | /* ??? Documenting this hook requires a GFDL license grant. */ | |
2276 | DEFHOOK_UNDOC | |
2277 | (mode_for_suffix, | |
2278 | "Return machine mode for non-standard constant literal suffix @var{c},\ | |
2279 | or VOIDmode if non-standard suffixes are unsupported.", | |
2280 | enum machine_mode, (char c), | |
2281 | default_mode_for_suffix) | |
2282 | ||
2283 | HOOK_VECTOR_END (c) | |
2284 | ||
2285 | /* Functions specific to the C++ frontend. */ | |
2286 | #undef HOOK_PREFIX | |
2287 | #define HOOK_PREFIX "TARGET_CXX_" | |
2288 | HOOK_VECTOR (TARGET_CXX, cxx) | |
2289 | ||
2290 | /* Return the integer type used for guard variables. */ | |
2291 | DEFHOOK | |
2292 | (guard_type, | |
2293 | "", | |
2294 | tree, (void), | |
2295 | default_cxx_guard_type) | |
2296 | ||
2297 | /* Return true if only the low bit of the guard should be tested. */ | |
2298 | DEFHOOK | |
2299 | (guard_mask_bit, | |
2300 | "", | |
2301 | bool, (void), | |
2302 | hook_bool_void_false) | |
2303 | ||
2304 | /* Returns the size of the array cookie for an array of type. */ | |
2305 | DEFHOOK | |
2306 | (get_cookie_size, | |
2307 | "", | |
2308 | tree, (tree type), | |
2309 | default_cxx_get_cookie_size) | |
2310 | ||
2311 | /* Returns true if the element size should be stored in the array cookie. */ | |
2312 | DEFHOOK | |
2313 | (cookie_has_size, | |
2314 | "", | |
2315 | bool, (void), | |
2316 | hook_bool_void_false) | |
2317 | ||
2318 | /* Allows backends to perform additional processing when | |
2319 | deciding if a class should be exported or imported. */ | |
2320 | DEFHOOK | |
2321 | (import_export_class, | |
2322 | "", | |
2323 | int, (tree type, int import_export), NULL) | |
2324 | ||
2325 | /* Returns true if constructors and destructors return "this". */ | |
2326 | DEFHOOK | |
2327 | (cdtor_returns_this, | |
2328 | "", | |
2329 | bool, (void), | |
2330 | hook_bool_void_false) | |
2331 | ||
2332 | /* Returns true if the key method for a class can be an inline | |
2333 | function, so long as it is not declared inline in the class | |
2334 | itself. Returning true is the behavior required by the Itanium C++ ABI. */ | |
2335 | DEFHOOK | |
2336 | (key_method_may_be_inline, | |
2337 | "", | |
2338 | bool, (void), | |
2339 | hook_bool_void_true) | |
2340 | ||
2341 | DEFHOOK | |
2342 | (determine_class_data_visibility, | |
2343 | "@var{decl} is a virtual table, virtual table table, typeinfo object,\ | |
2344 | or other similar implicit class data object that will be emitted with\ | |
2345 | external linkage in this translation unit. No ELF visibility has been\ | |
2346 | explicitly specified. If the target needs to specify a visibility\ | |
2347 | other than that of the containing class, use this hook to set\ | |
2348 | @code{DECL_VISIBILITY} and @code{DECL_VISIBILITY_SPECIFIED}.", | |
2349 | void, (tree decl), | |
2350 | hook_void_tree) | |
2351 | ||
2352 | /* Returns true (the default) if virtual tables and other | |
2353 | similar implicit class data objects are always COMDAT if they | |
2354 | have external linkage. If this hook returns false, then | |
2355 | class data for classes whose virtual table will be emitted in | |
2356 | only one translation unit will not be COMDAT. */ | |
2357 | DEFHOOK | |
2358 | (class_data_always_comdat, | |
2359 | "", | |
2360 | bool, (void), | |
2361 | hook_bool_void_true) | |
2362 | ||
2363 | /* Returns true (the default) if the RTTI for the basic types, | |
2364 | which is always defined in the C++ runtime, should be COMDAT; | |
2365 | false if it should not be COMDAT. */ | |
2366 | DEFHOOK | |
2367 | (library_rtti_comdat, | |
2368 | "", | |
2369 | bool, (void), | |
2370 | hook_bool_void_true) | |
2371 | ||
2372 | /* Returns true if __aeabi_atexit should be used to register static | |
2373 | destructors. */ | |
2374 | DEFHOOK | |
2375 | (use_aeabi_atexit, | |
2376 | "", | |
2377 | bool, (void), | |
2378 | hook_bool_void_false) | |
2379 | ||
2380 | /* Returns true if target may use atexit in the same manner as | |
2381 | __cxa_atexit to register static destructors. */ | |
2382 | DEFHOOK | |
2383 | (use_atexit_for_cxa_atexit, | |
2384 | "", | |
2385 | bool, (void), | |
2386 | hook_bool_void_false) | |
2387 | ||
2388 | DEFHOOK | |
2389 | (adjust_class_at_definition, | |
2390 | "@var{type} is a C++ class (i.e., RECORD_TYPE or UNION_TYPE) that has just\ | |
2391 | been defined. Use this hook to make adjustments to the class (eg, tweak\ | |
2392 | visibility or perform any other required target modifications).", | |
2393 | void, (tree type), | |
2394 | hook_void_tree) | |
2395 | ||
2396 | HOOK_VECTOR_END (cxx) | |
2397 | ||
2398 | /* Functions and data for emulated TLS support. */ | |
2399 | #undef HOOK_PREFIX | |
2400 | #define HOOK_PREFIX "TARGET_EMUTLS_" | |
2401 | HOOK_VECTOR (TARGET_EMUTLS, emutls) | |
2402 | ||
2403 | /* Name of the address and common functions. */ | |
2404 | DEFHOOKPOD | |
2405 | (get_address, | |
2406 | "", | |
2407 | const char *, "__builtin___emutls_get_address") | |
2408 | ||
2409 | DEFHOOKPOD | |
2410 | (register_common, | |
2411 | "", | |
2412 | const char *, "__builtin___emutls_register_common") | |
2413 | ||
2414 | /* Prefixes for proxy variable and template. */ | |
2415 | DEFHOOKPOD | |
2416 | (var_section, | |
2417 | "", | |
2418 | const char *, NULL) | |
2419 | ||
2420 | DEFHOOKPOD | |
2421 | (tmpl_section, | |
2422 | "", | |
2423 | const char *, NULL) | |
2424 | ||
2425 | /* Prefixes for proxy variable and template. */ | |
2426 | DEFHOOKPOD | |
2427 | (var_prefix, | |
2428 | "", | |
2429 | const char *, NULL) | |
2430 | ||
2431 | DEFHOOKPOD | |
2432 | (tmpl_prefix, | |
2433 | "", | |
2434 | const char *, NULL) | |
2435 | ||
2436 | /* Function to generate field definitions of the proxy variable. */ | |
2437 | DEFHOOK | |
2438 | (var_fields, | |
2439 | "", | |
2440 | tree, (tree type, tree *name), | |
2441 | default_emutls_var_fields) | |
2442 | ||
2443 | /* Function to initialize a proxy variable. */ | |
2444 | DEFHOOK | |
2445 | (var_init, | |
2446 | "", | |
2447 | tree, (tree var, tree decl, tree tmpl_addr), | |
2448 | default_emutls_var_init) | |
2449 | ||
2450 | /* Whether we are allowed to alter the usual alignment of the | |
2451 | proxy variable. */ | |
2452 | DEFHOOKPOD | |
2453 | (var_align_fixed, | |
2454 | "", | |
2455 | bool, false) | |
2456 | ||
2457 | /* Whether we can emit debug information for TLS vars. */ | |
2458 | DEFHOOKPOD | |
2459 | (debug_form_tls_address, | |
2460 | "", | |
2461 | bool, false) | |
2462 | ||
2463 | HOOK_VECTOR_END (emutls) | |
2464 | ||
2465 | #undef HOOK_PREFIX | |
2466 | #define HOOK_PREFIX "TARGET_OPTION_" | |
2467 | HOOK_VECTOR (TARGET_OPTION_HOOKS, target_option_hooks) | |
2468 | ||
2469 | /* Function to validate the attribute((option(...))) strings or NULL. If | |
2470 | the option is validated, it is assumed that DECL_FUNCTION_SPECIFIC will | |
2471 | be filled in in the function decl node. */ | |
2472 | DEFHOOK | |
2473 | (valid_attribute_p, | |
2474 | "", | |
2475 | bool, (tree fndecl, tree name, tree args, int flags), | |
2476 | default_target_option_valid_attribute_p) | |
2477 | ||
2478 | /* Function to save any extra target state in the target options structure. */ | |
2479 | DEFHOOK | |
2480 | (save, | |
2481 | "", | |
2482 | void, (struct cl_target_option *ptr), NULL) | |
2483 | ||
2484 | /* Function to restore any extra target state from the target options | |
2485 | structure. */ | |
2486 | DEFHOOK | |
2487 | (restore, | |
2488 | "", | |
2489 | void, (struct cl_target_option *ptr), NULL) | |
2490 | ||
2491 | /* Function to print any extra target state from the target options | |
2492 | structure. */ | |
2493 | DEFHOOK | |
2494 | (print, | |
2495 | "", | |
2496 | void, (FILE *file, int indent, struct cl_target_option *ptr), NULL) | |
2497 | ||
2498 | /* Function to parse arguments to be validated for #pragma option, and to | |
2499 | change the state if the options are valid. If the first argument is | |
2500 | NULL, the second argument specifies the default options to use. Return | |
2501 | true if the options are valid, and set the current state. */ | |
56cb42ea JR |
2502 | /* ??? The documentation in tm.texi is incomplete. */ |
2503 | DEFHOOK | |
38f8b050 JR |
2504 | (pragma_parse, |
2505 | "", | |
2506 | bool, (tree args, tree pop_target), | |
2507 | default_target_option_pragma_parse) | |
2508 | ||
2509 | /* Do option overrides for the target. */ | |
2510 | DEFHOOK | |
2511 | (override, | |
2512 | "", | |
2513 | void, (void), | |
c5387660 | 2514 | hook_void_void) |
38f8b050 | 2515 | |
fac0f722 | 2516 | /* Set default optimizations for the target. */ |
3020190e JM |
2517 | DEFHOOKPOD |
2518 | (optimization_table, | |
fac0f722 | 2519 | "", |
3020190e | 2520 | const struct default_options *, empty_optimization_table) |
fac0f722 | 2521 | |
128dc8e2 JM |
2522 | DEFHOOK |
2523 | (default_params, | |
2524 | "Set target-dependent default values for @option{--param} settings, using\ | |
2525 | calls to @code{set_default_param_value}.", | |
2526 | void, (void), | |
2527 | hook_void_void) | |
2528 | ||
7e4aae92 JM |
2529 | DEFHOOK |
2530 | (init_struct, | |
2531 | "Set target-dependent initial values of fields in @var{opts}.", | |
2532 | void, (struct gcc_options *opts), | |
2533 | hook_void_gcc_optionsp) | |
2534 | ||
38f8b050 JR |
2535 | /* Function to determine if one function can inline another function. */ |
2536 | #undef HOOK_PREFIX | |
2537 | #define HOOK_PREFIX "TARGET_" | |
2538 | DEFHOOK | |
2539 | (can_inline_p, | |
2540 | "", | |
2541 | bool, (tree caller, tree callee), | |
2542 | default_target_can_inline_p) | |
2543 | ||
2544 | HOOK_VECTOR_END (target_option) | |
2545 | ||
2546 | /* For targets that need to mark extra registers as live on entry to | |
2547 | the function, they should define this target hook and set their | |
2548 | bits in the bitmap passed in. */ | |
2549 | DEFHOOK | |
2550 | (extra_live_on_entry, | |
2551 | "", | |
2552 | void, (bitmap regs), | |
2553 | hook_void_bitmap) | |
2554 | ||
f0a0390e RH |
2555 | /* Determine the type of unwind info to emit for debugging. */ |
2556 | DEFHOOK | |
2557 | (debug_unwind_info, | |
2558 | "", | |
2559 | enum unwind_info_type, (void), | |
2560 | default_debug_unwind_info) | |
2561 | ||
2562 | /* Determine the type of unwind info to emit for exceptions. */ | |
2563 | DEFHOOK | |
2564 | (except_unwind_info, | |
2565 | "", | |
2566 | enum unwind_info_type, (void), | |
2567 | default_except_unwind_info) | |
2568 | ||
38f8b050 JR |
2569 | /* Leave the boolean fields at the end. */ |
2570 | ||
2571 | /* True if unwinding tables should be generated by default. */ | |
2572 | DEFHOOKPOD | |
2573 | (unwind_tables_default, | |
2574 | "", | |
2575 | bool, false) | |
2576 | ||
2577 | /* True if arbitrary sections are supported. */ | |
2578 | DEFHOOKPOD | |
2579 | (have_named_sections, | |
2580 | "", | |
2581 | bool, false) | |
2582 | ||
2583 | /* True if we can create zeroed data by switching to a BSS section | |
2584 | and then using ASM_OUTPUT_SKIP to allocate the space. */ | |
2585 | DEFHOOKPOD | |
2586 | (have_switchable_bss_sections, | |
2587 | "", | |
2588 | bool, false) | |
2589 | ||
2590 | /* True if "native" constructors and destructors are supported, | |
2591 | false if we're using collect2 for the job. */ | |
2592 | DEFHOOKPOD | |
2593 | (have_ctors_dtors, | |
2594 | "", | |
2595 | bool, false) | |
2596 | ||
2597 | /* True if thread-local storage is supported. */ | |
2598 | DEFHOOKPOD | |
2599 | (have_tls, | |
2600 | "", | |
2601 | bool, false) | |
2602 | ||
2603 | /* True if a small readonly data section is supported. */ | |
2604 | DEFHOOKPOD | |
2605 | (have_srodata_section, | |
2606 | "", | |
2607 | bool, false) | |
2608 | ||
2609 | /* True if EH frame info sections should be zero-terminated. */ | |
2610 | DEFHOOKPOD | |
2611 | (terminate_dw2_eh_frame_info, | |
2612 | "", | |
2613 | bool, true) | |
2614 | ||
2615 | /* True if #NO_APP should be emitted at the beginning of assembly output. */ | |
2616 | DEFHOOKPOD | |
2617 | (asm_file_start_app_off, | |
2618 | "", | |
2619 | bool, false) | |
2620 | ||
2621 | /* True if output_file_directive should be called for main_input_filename | |
2622 | at the beginning of assembly output. */ | |
2623 | DEFHOOKPOD | |
2624 | (asm_file_start_file_directive, | |
2625 | "", | |
2626 | bool, false) | |
2627 | ||
2628 | DEFHOOKPOD | |
2629 | (handle_pragma_extern_prefix, | |
2630 | "True if @code{#pragma extern_prefix} is to be supported.", | |
2631 | bool, 0) | |
2632 | ||
2633 | /* True if the target is allowed to reorder memory accesses unless | |
2634 | synchronization is explicitly requested. */ | |
2635 | DEFHOOKPOD | |
2636 | (relaxed_ordering, | |
2637 | "", | |
2638 | bool, false) | |
2639 | ||
2640 | /* Returns true if we should generate exception tables for use with the | |
2641 | ARM EABI. The effects the encoding of function exception specifications. */ | |
2642 | DEFHOOKPOD | |
2643 | (arm_eabi_unwinder, | |
2644 | "", | |
2645 | bool, false) | |
2646 | ||
9730bc27 TT |
2647 | DEFHOOKPOD |
2648 | (want_debug_pub_sections, | |
2649 | "True if the @code{.debug_pubtypes} and @code{.debug_pubnames} sections\ | |
2650 | should be emitted. These sections are not used on most platforms, and\ | |
2651 | in particular GDB does not use them.", | |
2652 | bool, false) | |
2653 | ||
38f8b050 JR |
2654 | /* Leave the boolean fields at the end. */ |
2655 | ||
2656 | /* Empty macro arguments are undefined in C90, so use an empty macro. */ | |
2657 | #define C90_EMPTY_HACK | |
2658 | /* Close the 'struct gcc_target' definition. */ | |
2659 | HOOK_VECTOR_END (C90_EMPTY_HACK) | |
2660 | ||
2661 | HOOK_VECTOR (TARGETCM_INITIALIZER, gcc_targetcm) | |
2662 | ||
2663 | /* Handle target switch CODE (an OPT_* value). ARG is the argument | |
2664 | passed to the switch; it is NULL if no argument was. VALUE is the | |
2665 | value of ARG if CODE specifies a UInteger option, otherwise it is | |
2666 | 1 if the positive form of the switch was used and 0 if the negative | |
2667 | form was. Return true if the switch was valid. */ | |
2668 | DEFHOOK | |
2669 | (handle_c_option, | |
2670 | "", | |
2671 | bool, (size_t code, const char *arg, int value), | |
2672 | default_handle_c_option) | |
2673 | ||
91ebb981 IS |
2674 | /* Targets may provide a string object type that can be used within |
2675 | and between C, C++, and Objective-C dialects. */ | |
2676 | ||
2677 | DEFHOOK | |
2678 | (objc_construct_string_object, | |
2679 | "Targets may provide a string object type that can be used within\ | |
2680 | and between C, C++ and their respective Objective-C dialects.\ | |
2681 | A string object might, for example, embed encoding and length information.\ | |
2682 | These objects are considered opaque to the compiler and handled as references.\ | |
2683 | An ideal implementation makes the composition of the string object\ | |
2684 | match that of the Objective-C @code{NSString} (@code{NXString} for GNUStep),\ | |
2685 | allowing efficient interworking between C-only and Objective-C code.\ | |
2686 | If a target implements string objects then this hook should return a\ | |
2687 | reference to such an object constructed from the normal `C' string\ | |
2688 | representation provided in @var{string}.\ | |
2689 | At present, the hook is used by Objective-C only, to obtain a\ | |
2690 | common-format string object when the target provides one.", | |
26705988 IS |
2691 | tree, (tree string), |
2692 | NULL) | |
91ebb981 IS |
2693 | |
2694 | DEFHOOK | |
2695 | (string_object_ref_type_p, | |
2696 | "If a target implements string objects then this hook should return\ | |
2697 | @code{true} if @var{stringref} is a valid reference to such an object.", | |
2698 | bool, (const_tree stringref), | |
2699 | hook_bool_const_tree_false) | |
26705988 | 2700 | |
91ebb981 IS |
2701 | DEFHOOK |
2702 | (check_string_object_format_arg, | |
2703 | "If a target implements string objects then this hook should should\ | |
2704 | provide a facility to check the function arguments in @var{args_list}\ | |
2705 | against the format specifiers in @var{format_arg} where the type of\ | |
2706 | @var{format_arg} is one recognized as a valid string reference type.", | |
2707 | void, (tree format_arg, tree args_list), | |
2708 | NULL) | |
2709 | ||
38f8b050 | 2710 | HOOK_VECTOR_END (C90_EMPTY_HACK) |