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69dcadff | 1 | /* Default language-specific hooks. |
8d9254fc | 2 | Copyright (C) 2001-2020 Free Software Foundation, Inc. |
69dcadff AO |
3 | Contributed by Alexandre Oliva <aoliva@redhat.com> |
4 | ||
54a7b573 | 5 | This file is part of GCC. |
69dcadff | 6 | |
54a7b573 | 7 | GCC is free software; you can redistribute it and/or modify |
69dcadff | 8 | it under the terms of the GNU General Public License as published by |
9dcd6f09 | 9 | the Free Software Foundation; either version 3, or (at your option) |
69dcadff AO |
10 | any later version. |
11 | ||
54a7b573 | 12 | GCC is distributed in the hope that it will be useful, |
69dcadff AO |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
69dcadff AO |
20 | |
21 | #include "config.h" | |
22 | #include "system.h" | |
4977bab6 | 23 | #include "coretypes.h" |
957060b5 | 24 | #include "target.h" |
957060b5 AM |
25 | #include "rtl.h" |
26 | #include "tree.h" | |
27 | #include "timevar.h" | |
28 | #include "stringpool.h" | |
957060b5 | 29 | #include "diagnostic.h" |
971801ff | 30 | #include "intl.h" |
69dcadff | 31 | #include "toplev.h" |
d8a2d370 | 32 | #include "attribs.h" |
45b0be94 | 33 | #include "gimplify.h" |
59bee412 | 34 | #include "langhooks.h" |
cf835838 | 35 | #include "tree-diagnostic.h" |
d7f09764 | 36 | #include "output.h" |
ed7dc894 | 37 | #include "timevar.h" |
ab341f50 | 38 | #include "stor-layout.h" |
c6ef9d8d RB |
39 | #include "cgraph.h" |
40 | #include "debug.h" | |
59bee412 | 41 | |
77b1a921 | 42 | /* Do nothing; in many cases the default hook. */ |
8ac61af7 | 43 | |
77b1a921 | 44 | void |
0c20a65f | 45 | lhd_do_nothing (void) |
77b1a921 NB |
46 | { |
47 | } | |
48 | ||
b03e38e1 | 49 | /* Do nothing (tree). */ |
63e1b1c4 NB |
50 | |
51 | void | |
e18476eb | 52 | lhd_do_nothing_t (tree ARG_UNUSED (t)) |
63e1b1c4 NB |
53 | { |
54 | } | |
55 | ||
f9417da1 RG |
56 | /* Pass through (tree). */ |
57 | tree | |
58 | lhd_pass_through_t (tree t) | |
59 | { | |
60 | return t; | |
61 | } | |
62 | ||
a7e8c268 MM |
63 | /* Do nothing (int, int, int). Return NULL_TREE. */ |
64 | ||
65 | tree | |
9f63daea | 66 | lhd_do_nothing_iii_return_null_tree (int ARG_UNUSED (i), |
e18476eb BI |
67 | int ARG_UNUSED (j), |
68 | int ARG_UNUSED (k)) | |
a7e8c268 MM |
69 | { |
70 | return NULL_TREE; | |
71 | } | |
72 | ||
b03e38e1 NB |
73 | /* Do nothing (function). */ |
74 | ||
75 | void | |
e18476eb | 76 | lhd_do_nothing_f (struct function * ARG_UNUSED (f)) |
b03e38e1 NB |
77 | { |
78 | } | |
79 | ||
c88770e9 NB |
80 | /* Do nothing (return NULL_TREE). */ |
81 | ||
82 | tree | |
e18476eb | 83 | lhd_return_null_tree (tree ARG_UNUSED (t)) |
c88770e9 NB |
84 | { |
85 | return NULL_TREE; | |
86 | } | |
87 | ||
fa233e34 KG |
88 | /* Do nothing (return NULL_TREE). */ |
89 | ||
90 | tree | |
91 | lhd_return_null_const_tree (const_tree ARG_UNUSED (t)) | |
92 | { | |
93 | return NULL_TREE; | |
94 | } | |
95 | ||
4bfec483 NB |
96 | /* The default post options hook. */ |
97 | ||
98 | bool | |
e18476eb | 99 | lhd_post_options (const char ** ARG_UNUSED (pfilename)) |
4bfec483 | 100 | { |
8ce94e44 JM |
101 | /* Excess precision other than "fast" requires front-end |
102 | support. */ | |
df375b03 | 103 | flag_excess_precision = EXCESS_PRECISION_FAST; |
4bfec483 NB |
104 | return false; |
105 | } | |
106 | ||
5d69f816 NB |
107 | /* Called from by print-tree.c. */ |
108 | ||
109 | void | |
e18476eb BI |
110 | lhd_print_tree_nothing (FILE * ARG_UNUSED (file), |
111 | tree ARG_UNUSED (node), | |
112 | int ARG_UNUSED (indent)) | |
5d69f816 | 113 | { |
ac79cd5a RK |
114 | } |
115 | ||
d7438551 | 116 | /* Called from check_global_declaration. */ |
ef4f94ac RH |
117 | |
118 | bool | |
ac7d7749 | 119 | lhd_warn_unused_global_decl (const_tree decl) |
ef4f94ac | 120 | { |
d7438551 | 121 | /* This is what used to exist in check_global_declaration. Probably |
ef4f94ac RH |
122 | not many of these actually apply to non-C languages. */ |
123 | ||
54dfd46b | 124 | if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) |
ef4f94ac | 125 | return false; |
8813a647 | 126 | if (VAR_P (decl) && TREE_READONLY (decl)) |
ef4f94ac RH |
127 | return false; |
128 | if (DECL_IN_SYSTEM_HEADER (decl)) | |
129 | return false; | |
130 | ||
131 | return true; | |
132 | } | |
133 | ||
599bba86 NB |
134 | /* Set the DECL_ASSEMBLER_NAME for DECL. */ |
135 | void | |
0c20a65f | 136 | lhd_set_decl_assembler_name (tree decl) |
599bba86 | 137 | { |
5234b8f5 DS |
138 | tree id; |
139 | ||
1ee85ee1 JH |
140 | /* set_decl_assembler_name may be called on TYPE_DECL to record ODR |
141 | name for C++ types. By default types have no ODR names. */ | |
142 | if (TREE_CODE (decl) == TYPE_DECL) | |
143 | return; | |
144 | ||
599bba86 NB |
145 | /* The language-independent code should never use the |
146 | DECL_ASSEMBLER_NAME for lots of DECLs. Only FUNCTION_DECLs and | |
147 | VAR_DECLs for variables with static storage duration need a real | |
8127d0e0 | 148 | DECL_ASSEMBLER_NAME. */ |
41806d92 | 149 | gcc_assert (TREE_CODE (decl) == FUNCTION_DECL |
8813a647 | 150 | || (VAR_P (decl) |
41806d92 NS |
151 | && (TREE_STATIC (decl) |
152 | || DECL_EXTERNAL (decl) | |
153 | || TREE_PUBLIC (decl)))); | |
b8698a0f | 154 | |
41806d92 NS |
155 | /* By default, assume the name to use in assembly code is the same |
156 | as that used in the source language. (That's correct for C, and | |
157 | GCC used to set DECL_ASSEMBLER_NAME to the same value as | |
158 | DECL_NAME in build_decl, so this choice provides backwards | |
5234b8f5 DS |
159 | compatibility with existing front-ends. This assumption is wrapped |
160 | in a target hook, to allow for target-specific modification of the | |
161 | identifier. | |
b8698a0f | 162 | |
41806d92 NS |
163 | Can't use just the variable's own name for a variable whose scope |
164 | is less than the whole compilation. Concatenate a distinguishing | |
158cccea | 165 | number. */ |
5234b8f5 | 166 | |
116f30c3 | 167 | if (TREE_PUBLIC (decl) || DECL_FILE_SCOPE_P (decl)) |
5234b8f5 | 168 | id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl)); |
41806d92 | 169 | else |
26e0dcb3 | 170 | { |
41806d92 | 171 | const char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); |
158cccea | 172 | static unsigned long num; |
41806d92 | 173 | char *label; |
b8698a0f | 174 | |
158cccea | 175 | ASM_FORMAT_PRIVATE_NAME (label, name, num++); |
5234b8f5 | 176 | id = get_identifier (label); |
26e0dcb3 | 177 | } |
5f3682ff | 178 | |
5234b8f5 | 179 | SET_DECL_ASSEMBLER_NAME (decl, id); |
5f3682ff | 180 | } |
5234b8f5 | 181 | |
5f3682ff NS |
182 | /* Forcibly overwrite the DECL_ASSEMBLER_NAME for DECL to NAME. */ |
183 | void | |
184 | lhd_overwrite_decl_assembler_name (tree decl, tree name) | |
185 | { | |
186 | DECL_ASSEMBLER_NAME_RAW (decl) = name; | |
599bba86 NB |
187 | } |
188 | ||
ab393bf1 NB |
189 | /* Type promotion for variable arguments. */ |
190 | tree | |
e18476eb | 191 | lhd_type_promotes_to (tree ARG_UNUSED (type)) |
ab393bf1 | 192 | { |
41806d92 | 193 | gcc_unreachable (); |
ab393bf1 NB |
194 | } |
195 | ||
9649812a MM |
196 | /* Registration of machine- or os-specific builtin types. */ |
197 | void | |
9f63daea | 198 | lhd_register_builtin_type (tree ARG_UNUSED (type), |
e18476eb | 199 | const char * ARG_UNUSED (name)) |
9649812a MM |
200 | { |
201 | } | |
202 | ||
7a228918 NB |
203 | /* Invalid use of an incomplete type. */ |
204 | void | |
4f2e1536 MP |
205 | lhd_incomplete_type_error (location_t ARG_UNUSED (loc), |
206 | const_tree ARG_UNUSED (value), const_tree type) | |
7a228918 | 207 | { |
41806d92 NS |
208 | gcc_assert (TREE_CODE (type) == ERROR_MARK); |
209 | return; | |
7a228918 NB |
210 | } |
211 | ||
37207ee7 ZW |
212 | /* Provide a default routine for alias sets that always returns -1. This |
213 | is used by languages that don't need to do anything special. */ | |
214 | ||
4862826d | 215 | alias_set_type |
e18476eb | 216 | lhd_get_alias_set (tree ARG_UNUSED (t)) |
37207ee7 ZW |
217 | { |
218 | return -1; | |
219 | } | |
220 | ||
7afff7cf NB |
221 | /* This is the default decl_printable_name function. */ |
222 | ||
223 | const char * | |
e18476eb | 224 | lhd_decl_printable_name (tree decl, int ARG_UNUSED (verbosity)) |
7afff7cf | 225 | { |
05cf561d | 226 | gcc_assert (decl && DECL_NAME (decl)); |
7afff7cf NB |
227 | return IDENTIFIER_POINTER (DECL_NAME (decl)); |
228 | } | |
229 | ||
721a8ac5 NS |
230 | /* This is the default dwarf_name function. */ |
231 | ||
232 | const char * | |
233 | lhd_dwarf_name (tree t, int verbosity) | |
234 | { | |
235 | gcc_assert (DECL_P (t)); | |
236 | ||
237 | return lang_hooks.decl_printable_name (t, verbosity); | |
238 | } | |
239 | ||
6de9cd9a DN |
240 | /* This compares two types for equivalence ("compatible" in C-based languages). |
241 | This routine should only return 1 if it is sure. It should not be used | |
242 | in contexts where erroneously returning 0 causes problems. */ | |
243 | ||
244 | int | |
245 | lhd_types_compatible_p (tree x, tree y) | |
246 | { | |
247 | return TYPE_MAIN_VARIANT (x) == TYPE_MAIN_VARIANT (y); | |
248 | } | |
249 | ||
e11e816e | 250 | /* lang_hooks.tree_dump.dump_tree: Dump language-specific parts of tree |
cc2902df | 251 | nodes. Returns nonzero if it does not want the usual dumping of the |
89d684bb BM |
252 | second argument. */ |
253 | ||
2bd3ecad | 254 | bool |
0c20a65f | 255 | lhd_tree_dump_dump_tree (void *di ATTRIBUTE_UNUSED, tree t ATTRIBUTE_UNUSED) |
89d684bb | 256 | { |
2bd3ecad | 257 | return false; |
89d684bb BM |
258 | } |
259 | ||
e11e816e | 260 | /* lang_hooks.tree_dump.type_qual: Determine type qualifiers in a |
89d684bb BM |
261 | language-specific way. */ |
262 | ||
263 | int | |
ac7d7749 | 264 | lhd_tree_dump_type_quals (const_tree t) |
89d684bb BM |
265 | { |
266 | return TYPE_QUALS (t); | |
267 | } | |
a77a9a18 | 268 | |
6de9cd9a DN |
269 | /* lang_hooks.gimplify_expr re-writes *EXPR_P into GIMPLE form. */ |
270 | ||
271 | int | |
726a989a RB |
272 | lhd_gimplify_expr (tree *expr_p ATTRIBUTE_UNUSED, |
273 | gimple_seq *pre_p ATTRIBUTE_UNUSED, | |
274 | gimple_seq *post_p ATTRIBUTE_UNUSED) | |
16b0d23f | 275 | { |
6de9cd9a | 276 | return GS_UNHANDLED; |
16b0d23f | 277 | } |
2f51bb1d | 278 | |
d78e771d | 279 | /* lang_hooks.tree_size: Determine the size of a tree with code C, |
8e7014b4 JJ |
280 | which is a language-specific tree code in category tcc_constant, |
281 | tcc_exceptional or tcc_type. The default expects never to be called. */ | |
d78e771d | 282 | size_t |
0c20a65f | 283 | lhd_tree_size (enum tree_code c ATTRIBUTE_UNUSED) |
d78e771d | 284 | { |
41806d92 | 285 | gcc_unreachable (); |
d78e771d ZW |
286 | } |
287 | ||
e076f71a AH |
288 | /* Return true if decl, which is a function decl, may be called by a |
289 | sibcall. */ | |
290 | ||
291 | bool | |
58f9752a | 292 | lhd_decl_ok_for_sibcall (const_tree decl ATTRIBUTE_UNUSED) |
e076f71a AH |
293 | { |
294 | return true; | |
295 | } | |
296 | ||
d7438551 AH |
297 | /* Generic global declaration processing. This is meant to be called |
298 | by the front-ends at the end of parsing. C/C++ do their own thing, | |
299 | but other front-ends may call this. */ | |
300 | ||
2f51bb1d | 301 | void |
d7438551 | 302 | global_decl_processing (void) |
2f51bb1d | 303 | { |
a406865a RG |
304 | tree globals, decl, *vec; |
305 | int len, i; | |
306 | ||
d7438551 | 307 | timevar_stop (TV_PHASE_PARSING); |
0d6bf48c | 308 | timevar_start (TV_PHASE_DEFERRED); |
2f51bb1d MA |
309 | /* Really define vars that have had only a tentative definition. |
310 | Really output inline functions that must actually be callable | |
311 | and have not been output so far. */ | |
312 | ||
a406865a RG |
313 | globals = lang_hooks.decls.getdecls (); |
314 | len = list_length (globals); | |
315 | vec = XNEWVEC (tree, len); | |
2f51bb1d MA |
316 | |
317 | /* Process the decls in reverse order--earliest first. | |
318 | Put them into VEC from back to front, then take out from front. */ | |
319 | ||
910ad8de | 320 | for (i = 0, decl = globals; i < len; i++, decl = DECL_CHAIN (decl)) |
2f51bb1d MA |
321 | vec[len - i - 1] = decl; |
322 | ||
323 | wrapup_global_declarations (vec, len); | |
0d6bf48c JH |
324 | timevar_stop (TV_PHASE_DEFERRED); |
325 | ||
d7438551 | 326 | timevar_start (TV_PHASE_PARSING); |
2f51bb1d MA |
327 | free (vec); |
328 | } | |
26e0dcb3 | 329 | |
21ecc5a7 GDR |
330 | /* Called to perform language-specific initialization of CTX. */ |
331 | void | |
1ebe4b4f | 332 | lhd_initialize_diagnostics (diagnostic_context *ctx ATTRIBUTE_UNUSED) |
21ecc5a7 GDR |
333 | { |
334 | } | |
335 | ||
2a8a8d7b NS |
336 | /* Called to register dumps. */ |
337 | void | |
338 | lhd_register_dumps (gcc::dump_manager *) | |
339 | { | |
340 | } | |
341 | ||
7a9bf9a4 JM |
342 | /* Called to perform language-specific options initialization. */ |
343 | void | |
344 | lhd_init_options (unsigned int decoded_options_count ATTRIBUTE_UNUSED, | |
345 | struct cl_decoded_option *decoded_options ATTRIBUTE_UNUSED) | |
346 | { | |
347 | } | |
348 | ||
349 | /* By default, always complain about options for the wrong language. */ | |
350 | bool | |
351 | lhd_complain_wrong_lang_p (const struct cl_option *option ATTRIBUTE_UNUSED) | |
352 | { | |
353 | return true; | |
354 | } | |
355 | ||
5f20c657 JM |
356 | /* By default, no language-specific options are valid. */ |
357 | bool | |
358 | lhd_handle_option (size_t code ATTRIBUTE_UNUSED, | |
359 | const char *arg ATTRIBUTE_UNUSED, | |
00abf86c MS |
360 | HOST_WIDE_INT value ATTRIBUTE_UNUSED, |
361 | int kind ATTRIBUTE_UNUSED, | |
a4d8c676 | 362 | location_t loc ATTRIBUTE_UNUSED, |
5f20c657 JM |
363 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED) |
364 | { | |
365 | return false; | |
366 | } | |
367 | ||
dba65e79 GDR |
368 | /* The default function to print out name of current function that caused |
369 | an error. */ | |
370 | void | |
c94ed7a1 JJ |
371 | lhd_print_error_function (diagnostic_context *context, const char *file, |
372 | diagnostic_info *diagnostic) | |
dba65e79 | 373 | { |
c94ed7a1 | 374 | if (diagnostic_last_function_changed (context, diagnostic)) |
dba65e79 | 375 | { |
653fee19 | 376 | char *old_prefix = pp_take_prefix (context->printer); |
cf835838 | 377 | tree abstract_origin = diagnostic_abstract_origin (diagnostic); |
c94ed7a1 | 378 | char *new_prefix = (file && abstract_origin == NULL) |
e78e8a0b | 379 | ? file_name_as_prefix (context, file) : NULL; |
dba65e79 GDR |
380 | |
381 | pp_set_prefix (context->printer, new_prefix); | |
382 | ||
383 | if (current_function_decl == NULL) | |
971801ff | 384 | pp_printf (context->printer, _("At top level:")); |
dba65e79 GDR |
385 | else |
386 | { | |
c94ed7a1 JJ |
387 | tree fndecl, ao; |
388 | ||
389 | if (abstract_origin) | |
390 | { | |
391 | ao = BLOCK_ABSTRACT_ORIGIN (abstract_origin); | |
c94ed7a1 JJ |
392 | gcc_assert (TREE_CODE (ao) == FUNCTION_DECL); |
393 | fndecl = ao; | |
394 | } | |
395 | else | |
396 | fndecl = current_function_decl; | |
397 | ||
398 | if (TREE_CODE (TREE_TYPE (fndecl)) == METHOD_TYPE) | |
dba65e79 | 399 | pp_printf |
c94ed7a1 | 400 | (context->printer, _("In member function %qs"), |
4f1e4960 | 401 | identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); |
dba65e79 GDR |
402 | else |
403 | pp_printf | |
c94ed7a1 | 404 | (context->printer, _("In function %qs"), |
4f1e4960 | 405 | identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); |
c94ed7a1 JJ |
406 | |
407 | while (abstract_origin) | |
408 | { | |
409 | location_t *locus; | |
410 | tree block = abstract_origin; | |
411 | ||
412 | locus = &BLOCK_SOURCE_LOCATION (block); | |
413 | fndecl = NULL; | |
414 | block = BLOCK_SUPERCONTEXT (block); | |
415 | while (block && TREE_CODE (block) == BLOCK | |
416 | && BLOCK_ABSTRACT_ORIGIN (block)) | |
417 | { | |
418 | ao = BLOCK_ABSTRACT_ORIGIN (block); | |
c94ed7a1 JJ |
419 | if (TREE_CODE (ao) == FUNCTION_DECL) |
420 | { | |
421 | fndecl = ao; | |
422 | break; | |
423 | } | |
424 | else if (TREE_CODE (ao) != BLOCK) | |
425 | break; | |
426 | ||
427 | block = BLOCK_SUPERCONTEXT (block); | |
428 | } | |
429 | if (fndecl) | |
430 | abstract_origin = block; | |
431 | else | |
432 | { | |
433 | while (block && TREE_CODE (block) == BLOCK) | |
434 | block = BLOCK_SUPERCONTEXT (block); | |
435 | ||
91ab2c86 | 436 | if (block && TREE_CODE (block) == FUNCTION_DECL) |
c94ed7a1 JJ |
437 | fndecl = block; |
438 | abstract_origin = NULL; | |
439 | } | |
440 | if (fndecl) | |
441 | { | |
442 | expanded_location s = expand_location (*locus); | |
07838b13 | 443 | pp_comma (context->printer); |
c94ed7a1 JJ |
444 | pp_newline (context->printer); |
445 | if (s.file != NULL) | |
446 | { | |
243fbddd | 447 | if (context->show_column) |
c94ed7a1 | 448 | pp_printf (context->printer, |
4b84d650 | 449 | _(" inlined from %qs at %r%s:%d:%d%R"), |
4f1e4960 | 450 | identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)), |
4b84d650 | 451 | "locus", s.file, s.line, s.column); |
c94ed7a1 | 452 | else |
c94ed7a1 | 453 | pp_printf (context->printer, |
4b84d650 | 454 | _(" inlined from %qs at %r%s:%d%R"), |
4f1e4960 | 455 | identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)), |
4b84d650 | 456 | "locus", s.file, s.line); |
c94ed7a1 JJ |
457 | |
458 | } | |
459 | else | |
460 | pp_printf (context->printer, _(" inlined from %qs"), | |
4f1e4960 | 461 | identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); |
c94ed7a1 JJ |
462 | } |
463 | } | |
07838b13 | 464 | pp_colon (context->printer); |
dba65e79 | 465 | } |
dba65e79 | 466 | |
c94ed7a1 | 467 | diagnostic_set_last_function (context, diagnostic); |
f8923f7e | 468 | pp_newline_and_flush (context->printer); |
dba65e79 GDR |
469 | context->printer->prefix = old_prefix; |
470 | free ((char*) new_prefix); | |
471 | } | |
472 | } | |
473 | ||
b9dcdee4 JH |
474 | tree |
475 | lhd_make_node (enum tree_code code) | |
476 | { | |
477 | return make_node (code); | |
478 | } | |
c5ff069d | 479 | |
ab341f50 RS |
480 | /* Default implementation of LANG_HOOKS_SIMULATE_ENUM_DECL. Assume a |
481 | simple int-based enumerator (which is all the hook can be used for | |
482 | at present) and push each decl individually without any decoration. | |
483 | ||
484 | This definition is suitable for LTO and is generic enough that it | |
485 | might be reusable elsewhere. */ | |
486 | tree | |
487 | lhd_simulate_enum_decl (location_t loc, const char *name, | |
488 | vec<string_int_pair> values) | |
489 | { | |
490 | tree enumtype = lang_hooks.types.make_type (ENUMERAL_TYPE); | |
491 | tree enumdecl = build_decl (loc, TYPE_DECL, get_identifier (name), enumtype); | |
492 | TYPE_STUB_DECL (enumtype) = enumdecl; | |
493 | ||
494 | tree value_chain = NULL_TREE; | |
495 | string_int_pair *value; | |
496 | unsigned int i; | |
497 | FOR_EACH_VEC_ELT (values, i, value) | |
498 | { | |
499 | tree value_decl = build_decl (loc, CONST_DECL, | |
500 | get_identifier (value->first), enumtype); | |
501 | DECL_INITIAL (value_decl) = build_int_cst (integer_type_node, | |
502 | value->second); | |
503 | lang_hooks.decls.pushdecl (value_decl); | |
504 | value_chain = tree_cons (value_decl, DECL_INITIAL (value_decl), | |
505 | value_chain); | |
506 | } | |
507 | ||
508 | TYPE_MIN_VALUE (enumtype) = TYPE_MIN_VALUE (integer_type_node); | |
509 | TYPE_MAX_VALUE (enumtype) = TYPE_MAX_VALUE (integer_type_node); | |
510 | SET_TYPE_ALIGN (enumtype, TYPE_ALIGN (integer_type_node)); | |
511 | TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node); | |
512 | layout_type (enumtype); | |
513 | lang_hooks.decls.pushdecl (enumdecl); | |
514 | ||
515 | return enumtype; | |
516 | } | |
517 | ||
8a3a6ab4 DM |
518 | /* Default implementation of LANG_HOOKS_TYPE_FOR_SIZE. |
519 | Return an integer type with PRECISION bits of precision, | |
520 | that is unsigned if UNSIGNEDP is nonzero, otherwise signed. */ | |
521 | ||
522 | tree | |
523 | lhd_type_for_size (unsigned precision, int unsignedp) | |
524 | { | |
525 | int i; | |
526 | ||
527 | if (precision == TYPE_PRECISION (integer_type_node)) | |
528 | return unsignedp ? unsigned_type_node : integer_type_node; | |
529 | ||
530 | if (precision == TYPE_PRECISION (signed_char_type_node)) | |
531 | return unsignedp ? unsigned_char_type_node : signed_char_type_node; | |
532 | ||
533 | if (precision == TYPE_PRECISION (short_integer_type_node)) | |
534 | return unsignedp ? short_unsigned_type_node : short_integer_type_node; | |
535 | ||
536 | if (precision == TYPE_PRECISION (long_integer_type_node)) | |
537 | return unsignedp ? long_unsigned_type_node : long_integer_type_node; | |
538 | ||
539 | if (precision == TYPE_PRECISION (long_long_integer_type_node)) | |
540 | return unsignedp | |
541 | ? long_long_unsigned_type_node | |
542 | : long_long_integer_type_node; | |
543 | ||
544 | for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
545 | if (int_n_enabled_p[i] | |
546 | && precision == int_n_data[i].bitsize) | |
547 | return (unsignedp ? int_n_trees[i].unsigned_type | |
548 | : int_n_trees[i].signed_type); | |
549 | ||
550 | if (precision <= TYPE_PRECISION (intQI_type_node)) | |
551 | return unsignedp ? unsigned_intQI_type_node : intQI_type_node; | |
552 | ||
553 | if (precision <= TYPE_PRECISION (intHI_type_node)) | |
554 | return unsignedp ? unsigned_intHI_type_node : intHI_type_node; | |
555 | ||
556 | if (precision <= TYPE_PRECISION (intSI_type_node)) | |
557 | return unsignedp ? unsigned_intSI_type_node : intSI_type_node; | |
558 | ||
559 | if (precision <= TYPE_PRECISION (intDI_type_node)) | |
560 | return unsignedp ? unsigned_intDI_type_node : intDI_type_node; | |
561 | ||
562 | if (precision <= TYPE_PRECISION (intTI_type_node)) | |
563 | return unsignedp ? unsigned_intTI_type_node : intTI_type_node; | |
564 | ||
565 | return NULL_TREE; | |
566 | } | |
567 | ||
c5ff069d ZW |
568 | HOST_WIDE_INT |
569 | lhd_to_target_charset (HOST_WIDE_INT c) | |
570 | { | |
571 | return c; | |
572 | } | |
73f397d4 JM |
573 | |
574 | tree | |
51eed280 | 575 | lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED) |
73f397d4 JM |
576 | { |
577 | return expr; | |
578 | } | |
953ff289 DN |
579 | |
580 | /* Return sharing kind if OpenMP sharing attribute of DECL is | |
581 | predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */ | |
582 | ||
583 | enum omp_clause_default_kind | |
93535a2b | 584 | lhd_omp_predetermined_sharing (tree decl) |
953ff289 DN |
585 | { |
586 | if (DECL_ARTIFICIAL (decl)) | |
587 | return OMP_CLAUSE_DEFAULT_SHARED; | |
588 | return OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
589 | } | |
590 | ||
93535a2b TB |
591 | /* Return sharing kind if OpenMP mapping attribute of DECL is |
592 | predetermined, OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED otherwise. */ | |
593 | ||
594 | enum omp_clause_defaultmap_kind | |
595 | lhd_omp_predetermined_mapping (tree decl) | |
596 | { | |
597 | if (DECL_ARTIFICIAL (decl)) | |
598 | return OMP_CLAUSE_DEFAULTMAP_TO; | |
599 | return OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED; | |
600 | } | |
601 | ||
953ff289 DN |
602 | /* Generate code to copy SRC to DST. */ |
603 | ||
604 | tree | |
605 | lhd_omp_assignment (tree clause ATTRIBUTE_UNUSED, tree dst, tree src) | |
606 | { | |
726a989a | 607 | return build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); |
953ff289 DN |
608 | } |
609 | ||
f014c653 JJ |
610 | /* Finalize clause C. */ |
611 | ||
612 | void | |
972da557 | 613 | lhd_omp_finish_clause (tree, gimple_seq *, bool) |
f014c653 JJ |
614 | { |
615 | } | |
616 | ||
b4c3a85b JJ |
617 | /* Return true if DECL is a scalar variable (for the purpose of |
618 | implicit firstprivatization). */ | |
619 | ||
620 | bool | |
621 | lhd_omp_scalar_p (tree decl) | |
622 | { | |
623 | tree type = TREE_TYPE (decl); | |
624 | if (TREE_CODE (type) == REFERENCE_TYPE) | |
625 | type = TREE_TYPE (type); | |
626 | if (TREE_CODE (type) == COMPLEX_TYPE) | |
627 | type = TREE_TYPE (type); | |
628 | if (INTEGRAL_TYPE_P (type) | |
629 | || SCALAR_FLOAT_TYPE_P (type) | |
630 | || TREE_CODE (type) == POINTER_TYPE) | |
631 | return true; | |
632 | return false; | |
633 | } | |
634 | ||
953ff289 DN |
635 | /* Register language specific type size variables as potentially OpenMP |
636 | firstprivate variables. */ | |
637 | ||
638 | void | |
639 | lhd_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *c ATTRIBUTE_UNUSED, | |
640 | tree t ATTRIBUTE_UNUSED) | |
641 | { | |
642 | } | |
c79efc4d | 643 | |
b17a8b07 | 644 | /* Return true if TYPE is an OpenMP mappable type. */ |
acf0174b JJ |
645 | |
646 | bool | |
647 | lhd_omp_mappable_type (tree type) | |
648 | { | |
b17a8b07 TS |
649 | /* Mappable type has to be complete. */ |
650 | if (type == error_mark_node || !COMPLETE_TYPE_P (type)) | |
651 | return false; | |
652 | return true; | |
acf0174b JJ |
653 | } |
654 | ||
74078538 RS |
655 | /* Common function for add_builtin_function, add_builtin_function_ext_scope |
656 | and simulate_builtin_function_decl. */ | |
657 | ||
5779e713 | 658 | static tree |
74078538 RS |
659 | build_builtin_function (location_t location, const char *name, tree type, |
660 | int function_code, enum built_in_class cl, | |
661 | const char *library_name, tree attrs) | |
c79efc4d RÁE |
662 | { |
663 | tree id = get_identifier (name); | |
74078538 | 664 | tree decl = build_decl (location, FUNCTION_DECL, id, type); |
c79efc4d RÁE |
665 | |
666 | TREE_PUBLIC (decl) = 1; | |
667 | DECL_EXTERNAL (decl) = 1; | |
c536a6a7 | 668 | |
4d732405 | 669 | set_decl_built_in_function (decl, cl, function_code); |
c79efc4d | 670 | |
428aba16 RS |
671 | if (library_name) |
672 | { | |
673 | tree libname = get_identifier (library_name); | |
72b1108c NS |
674 | |
675 | libname = targetm.mangle_decl_assembler_name (decl, libname); | |
428aba16 RS |
676 | SET_DECL_ASSEMBLER_NAME (decl, libname); |
677 | } | |
c79efc4d RÁE |
678 | |
679 | /* Possibly apply some default attributes to this built-in function. */ | |
680 | if (attrs) | |
681 | decl_attributes (&decl, attrs, ATTR_FLAG_BUILT_IN); | |
682 | else | |
683 | decl_attributes (&decl, NULL_TREE, 0); | |
684 | ||
74078538 | 685 | return decl; |
5779e713 MM |
686 | } |
687 | ||
688 | /* Create a builtin function. */ | |
689 | ||
690 | tree | |
691 | add_builtin_function (const char *name, | |
692 | tree type, | |
693 | int function_code, | |
694 | enum built_in_class cl, | |
695 | const char *library_name, | |
696 | tree attrs) | |
697 | { | |
74078538 RS |
698 | tree decl = build_builtin_function (BUILTINS_LOCATION, name, type, |
699 | function_code, cl, library_name, attrs); | |
700 | return lang_hooks.builtin_function (decl); | |
5779e713 | 701 | } |
c79efc4d | 702 | |
5779e713 MM |
703 | /* Like add_builtin_function, but make sure the scope is the external scope. |
704 | This is used to delay putting in back end builtin functions until the ISA | |
705 | that defines the builtin is declared via function specific target options, | |
706 | which can save memory for machines like the x86_64 that have multiple ISAs. | |
707 | If this points to the same function as builtin_function, the backend must | |
708 | add all of the builtins at program initialization time. */ | |
709 | ||
710 | tree | |
711 | add_builtin_function_ext_scope (const char *name, | |
712 | tree type, | |
713 | int function_code, | |
714 | enum built_in_class cl, | |
715 | const char *library_name, | |
716 | tree attrs) | |
717 | { | |
74078538 RS |
718 | tree decl = build_builtin_function (BUILTINS_LOCATION, name, type, |
719 | function_code, cl, library_name, attrs); | |
720 | return lang_hooks.builtin_function_ext_scope (decl); | |
721 | } | |
722 | ||
723 | /* Simulate a declaration of a target-specific built-in function at | |
724 | location LOCATION, as though it had been declared directly in the | |
725 | source language. NAME is the name of the function, TYPE is its function | |
726 | type, FUNCTION_CODE is the target-specific function code, LIBRARY_NAME | |
727 | is the name of the underlying library function (NULL if none) and | |
728 | ATTRS is a list of function attributes. | |
729 | ||
730 | Return the decl of the declared function. */ | |
731 | ||
732 | tree | |
733 | simulate_builtin_function_decl (location_t location, const char *name, | |
734 | tree type, int function_code, | |
735 | const char *library_name, tree attrs) | |
736 | { | |
737 | tree decl = build_builtin_function (location, name, type, | |
738 | function_code, BUILT_IN_MD, | |
739 | library_name, attrs); | |
740 | tree new_decl = lang_hooks.simulate_builtin_function_decl (decl); | |
741 | ||
742 | /* Give the front end a chance to create a new decl if necessary, | |
743 | but if the front end discards the decl in favour of a conflicting | |
744 | (erroneous) previous definition, return the decl that we tried but | |
745 | failed to add. This allows the caller to process the returned decl | |
746 | normally, even though the source code won't be able to use it. */ | |
747 | if (TREE_CODE (new_decl) == FUNCTION_DECL | |
748 | && fndecl_built_in_p (new_decl, function_code, BUILT_IN_MD)) | |
749 | return new_decl; | |
750 | ||
751 | return decl; | |
c79efc4d RÁE |
752 | } |
753 | ||
754 | tree | |
755 | lhd_builtin_function (tree decl) | |
756 | { | |
757 | lang_hooks.decls.pushdecl (decl); | |
758 | return decl; | |
759 | } | |
d7f09764 | 760 | |
c0814136 SB |
761 | /* Create a builtin type. */ |
762 | ||
763 | tree | |
764 | add_builtin_type (const char *name, tree type) | |
765 | { | |
766 | tree id = get_identifier (name); | |
767 | tree decl = build_decl (BUILTINS_LOCATION, TYPE_DECL, id, type); | |
768 | return lang_hooks.decls.pushdecl (decl); | |
769 | } | |
770 | ||
d7f09764 DN |
771 | /* LTO hooks. */ |
772 | ||
773 | /* Used to save and restore any previously active section. */ | |
774 | static section *saved_section; | |
775 | ||
776 | ||
777 | /* Begin a new LTO output section named NAME. This default implementation | |
778 | saves the old section and emits assembly code to switch to the new | |
779 | section. */ | |
780 | ||
781 | void | |
782 | lhd_begin_section (const char *name) | |
783 | { | |
784 | section *section; | |
785 | ||
786 | /* Save the old section so we can restore it in lto_end_asm_section. */ | |
787 | gcc_assert (!saved_section); | |
788 | saved_section = in_section; | |
cb799353 RG |
789 | if (!saved_section) |
790 | saved_section = text_section; | |
d7f09764 DN |
791 | |
792 | /* Create a new section and switch to it. */ | |
568de14d | 793 | section = get_section (name, SECTION_DEBUG | SECTION_EXCLUDE, NULL, true); |
d7f09764 DN |
794 | switch_to_section (section); |
795 | } | |
796 | ||
797 | ||
798 | /* Write DATA of length LEN to the current LTO output section. This default | |
f6bcdb5e | 799 | implementation just calls assemble_string. */ |
d7f09764 DN |
800 | |
801 | void | |
f6bcdb5e | 802 | lhd_append_data (const void *data, size_t len, void *) |
d7f09764 DN |
803 | { |
804 | if (data) | |
ed7dc894 JH |
805 | { |
806 | timevar_push (TV_IPA_LTO_OUTPUT); | |
807 | assemble_string ((const char *)data, len); | |
808 | timevar_pop (TV_IPA_LTO_OUTPUT); | |
809 | } | |
d7f09764 DN |
810 | } |
811 | ||
812 | ||
813 | /* Finish the current LTO output section. This default implementation emits | |
814 | assembly code to switch to any section previously saved by | |
815 | lhd_begin_section. */ | |
816 | ||
817 | void | |
818 | lhd_end_section (void) | |
819 | { | |
820 | if (saved_section) | |
821 | { | |
822 | switch_to_section (saved_section); | |
823 | saved_section = NULL; | |
824 | } | |
825 | } | |
7315daa6 MW |
826 | |
827 | /* Default implementation of enum_underlying_base_type using type_for_size. */ | |
828 | ||
829 | tree | |
830 | lhd_enum_underlying_base_type (const_tree enum_type) | |
831 | { | |
832 | return lang_hooks.types.type_for_size (TYPE_PRECISION (enum_type), | |
833 | TYPE_UNSIGNED (enum_type)); | |
834 | } | |
dcc97066 | 835 | |
e5106e27 DM |
836 | /* Default implementation of LANG_HOOKS_GET_SUBSTRING_LOCATION. */ |
837 | ||
838 | const char * | |
839 | lhd_get_substring_location (const substring_loc &, location_t *) | |
840 | { | |
841 | return "unimplemented"; | |
842 | } | |
843 | ||
81b42cc6 JJ |
844 | /* Default implementation of LANG_HOOKS_DECL_DWARF_ATTRIBUTE. Don't add |
845 | any attributes. */ | |
846 | ||
847 | int | |
848 | lhd_decl_dwarf_attribute (const_tree, int) | |
849 | { | |
850 | return -1; | |
851 | } | |
852 | ||
6905c577 JJ |
853 | /* Default implementation of LANG_HOOKS_TYPE_DWARF_ATTRIBUTE. Don't add |
854 | any attributes. */ | |
855 | ||
856 | int | |
857 | lhd_type_dwarf_attribute (const_tree, int) | |
858 | { | |
859 | return -1; | |
860 | } | |
861 | ||
b7fc43d7 RB |
862 | /* Default implementation of LANG_HOOKS_UNIT_SIZE_WITHOUT_REUSABLE_PADDING. |
863 | Just return TYPE_SIZE_UNIT unadjusted. */ | |
864 | ||
865 | tree | |
866 | lhd_unit_size_without_reusable_padding (tree t) | |
867 | { | |
868 | return TYPE_SIZE_UNIT (t); | |
869 | } | |
870 | ||
c6ef9d8d RB |
871 | /* Default implementation for the finalize_early_debug hook. */ |
872 | ||
873 | void | |
874 | lhd_finalize_early_debug (void) | |
875 | { | |
876 | /* Emit early debug for reachable functions, and by consequence, | |
877 | locally scoped symbols. */ | |
878 | struct cgraph_node *cnode; | |
879 | FOR_EACH_FUNCTION_WITH_GIMPLE_BODY (cnode) | |
880 | (*debug_hooks->early_global_decl) (cnode->decl); | |
881 | } | |
882 | ||
dcc97066 MW |
883 | /* Returns true if the current lang_hooks represents the GNU C frontend. */ |
884 | ||
885 | bool | |
886 | lang_GNU_C (void) | |
887 | { | |
888 | return (strncmp (lang_hooks.name, "GNU C", 5) == 0 | |
889 | && (lang_hooks.name[5] == '\0' || ISDIGIT (lang_hooks.name[5]))); | |
890 | } | |
891 | ||
892 | /* Returns true if the current lang_hooks represents the GNU C++ frontend. */ | |
893 | ||
894 | bool | |
895 | lang_GNU_CXX (void) | |
896 | { | |
897 | return strncmp (lang_hooks.name, "GNU C++", 7) == 0; | |
898 | } | |
de3aebff JJ |
899 | |
900 | /* Returns true if the current lang_hooks represents the GNU Fortran frontend. */ | |
901 | ||
902 | bool | |
903 | lang_GNU_Fortran (void) | |
904 | { | |
905 | return strncmp (lang_hooks.name, "GNU Fortran", 11) == 0; | |
906 | } | |
81fea426 MP |
907 | |
908 | /* Returns true if the current lang_hooks represents the GNU Objective-C | |
909 | frontend. */ | |
910 | ||
911 | bool | |
912 | lang_GNU_OBJC (void) | |
913 | { | |
914 | return strncmp (lang_hooks.name, "GNU Objective-C", 15) == 0; | |
915 | } |