Mercurial > hg > CbC > CbC_gcc
annotate gcc/langhooks.c @ 63:b7f97abdc517 gcc-4.6-20100522
update gcc from gcc-4.5.0 to gcc-4.6
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 24 May 2010 12:47:05 +0900 |
| parents | 77e2b8dfacca |
| children | f6334be47118 |
| rev | line source |
|---|---|
| 0 | 1 /* Default language-specific hooks. |
|
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2 Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 Contributed by Alexandre Oliva <aoliva@redhat.com> | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify | |
| 9 it under the terms of the GNU General Public License as published by | |
| 10 the Free Software Foundation; either version 3, or (at your option) | |
| 11 any later version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, | |
| 14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 GNU General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 #include "config.h" | |
| 23 #include "system.h" | |
| 24 #include "coretypes.h" | |
| 25 #include "intl.h" | |
| 26 #include "tm.h" | |
| 27 #include "toplev.h" | |
| 28 #include "tree.h" | |
| 29 #include "tree-inline.h" | |
| 30 #include "gimple.h" | |
| 31 #include "rtl.h" | |
| 32 #include "insn-config.h" | |
| 33 #include "integrate.h" | |
| 34 #include "flags.h" | |
| 35 #include "langhooks.h" | |
| 36 #include "target.h" | |
| 37 #include "langhooks-def.h" | |
| 38 #include "ggc.h" | |
| 39 #include "diagnostic.h" | |
|
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40 #include "tree-diagnostic.h" |
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41 #include "cgraph.h" |
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42 #include "output.h" |
| 0 | 43 |
| 44 /* Do nothing; in many cases the default hook. */ | |
| 45 | |
| 46 void | |
| 47 lhd_do_nothing (void) | |
| 48 { | |
| 49 } | |
| 50 | |
| 51 /* Do nothing (tree). */ | |
| 52 | |
| 53 void | |
| 54 lhd_do_nothing_t (tree ARG_UNUSED (t)) | |
| 55 { | |
| 56 } | |
| 57 | |
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58 /* Pass through (tree). */ |
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59 tree |
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60 lhd_pass_through_t (tree t) |
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61 { |
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62 return t; |
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63 } |
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64 |
| 0 | 65 /* Do nothing (int). */ |
| 66 | |
| 67 void | |
| 68 lhd_do_nothing_i (int ARG_UNUSED (i)) | |
| 69 { | |
| 70 } | |
| 71 | |
| 72 /* Do nothing (int, int, int). Return NULL_TREE. */ | |
| 73 | |
| 74 tree | |
| 75 lhd_do_nothing_iii_return_null_tree (int ARG_UNUSED (i), | |
| 76 int ARG_UNUSED (j), | |
| 77 int ARG_UNUSED (k)) | |
| 78 { | |
| 79 return NULL_TREE; | |
| 80 } | |
| 81 | |
| 82 /* Do nothing (function). */ | |
| 83 | |
| 84 void | |
| 85 lhd_do_nothing_f (struct function * ARG_UNUSED (f)) | |
| 86 { | |
| 87 } | |
| 88 | |
| 89 /* Do nothing (return NULL_TREE). */ | |
| 90 | |
| 91 tree | |
| 92 lhd_return_null_tree_v (void) | |
| 93 { | |
| 94 return NULL_TREE; | |
| 95 } | |
| 96 | |
| 97 /* Do nothing (return NULL_TREE). */ | |
| 98 | |
| 99 tree | |
| 100 lhd_return_null_tree (tree ARG_UNUSED (t)) | |
| 101 { | |
| 102 return NULL_TREE; | |
| 103 } | |
| 104 | |
| 105 /* Do nothing (return NULL_TREE). */ | |
| 106 | |
| 107 tree | |
| 108 lhd_return_null_const_tree (const_tree ARG_UNUSED (t)) | |
| 109 { | |
| 110 return NULL_TREE; | |
| 111 } | |
| 112 | |
| 113 /* The default post options hook. */ | |
| 114 | |
| 115 bool | |
| 116 lhd_post_options (const char ** ARG_UNUSED (pfilename)) | |
| 117 { | |
|
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118 /* Excess precision other than "fast" requires front-end |
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119 support. */ |
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120 flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; |
| 0 | 121 return false; |
| 122 } | |
| 123 | |
| 124 /* Called from by print-tree.c. */ | |
| 125 | |
| 126 void | |
| 127 lhd_print_tree_nothing (FILE * ARG_UNUSED (file), | |
| 128 tree ARG_UNUSED (node), | |
| 129 int ARG_UNUSED (indent)) | |
| 130 { | |
| 131 } | |
| 132 | |
| 133 /* Called from check_global_declarations. */ | |
| 134 | |
| 135 bool | |
| 136 lhd_warn_unused_global_decl (const_tree decl) | |
| 137 { | |
| 138 /* This is what used to exist in check_global_declarations. Probably | |
| 139 not many of these actually apply to non-C languages. */ | |
| 140 | |
| 141 if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) | |
| 142 return false; | |
| 143 if (TREE_CODE (decl) == VAR_DECL && TREE_READONLY (decl)) | |
| 144 return false; | |
| 145 if (DECL_IN_SYSTEM_HEADER (decl)) | |
| 146 return false; | |
| 147 | |
| 148 return true; | |
| 149 } | |
| 150 | |
| 151 /* Set the DECL_ASSEMBLER_NAME for DECL. */ | |
| 152 void | |
| 153 lhd_set_decl_assembler_name (tree decl) | |
| 154 { | |
| 155 tree id; | |
| 156 | |
| 157 /* The language-independent code should never use the | |
| 158 DECL_ASSEMBLER_NAME for lots of DECLs. Only FUNCTION_DECLs and | |
| 159 VAR_DECLs for variables with static storage duration need a real | |
| 160 DECL_ASSEMBLER_NAME. */ | |
| 161 gcc_assert (TREE_CODE (decl) == FUNCTION_DECL | |
| 162 || (TREE_CODE (decl) == VAR_DECL | |
| 163 && (TREE_STATIC (decl) | |
| 164 || DECL_EXTERNAL (decl) | |
| 165 || TREE_PUBLIC (decl)))); | |
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166 |
| 0 | 167 /* By default, assume the name to use in assembly code is the same |
| 168 as that used in the source language. (That's correct for C, and | |
| 169 GCC used to set DECL_ASSEMBLER_NAME to the same value as | |
| 170 DECL_NAME in build_decl, so this choice provides backwards | |
| 171 compatibility with existing front-ends. This assumption is wrapped | |
| 172 in a target hook, to allow for target-specific modification of the | |
| 173 identifier. | |
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174 |
| 0 | 175 Can't use just the variable's own name for a variable whose scope |
| 176 is less than the whole compilation. Concatenate a distinguishing | |
| 177 number - we use the DECL_UID. */ | |
| 178 | |
| 179 if (TREE_PUBLIC (decl) || DECL_CONTEXT (decl) == NULL_TREE) | |
| 180 id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl)); | |
| 181 else | |
| 182 { | |
| 183 const char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
| 184 char *label; | |
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185 |
| 0 | 186 ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl)); |
| 187 id = get_identifier (label); | |
| 188 } | |
| 189 SET_DECL_ASSEMBLER_NAME (decl, id); | |
| 190 | |
| 191 } | |
| 192 | |
| 193 /* Type promotion for variable arguments. */ | |
| 194 tree | |
| 195 lhd_type_promotes_to (tree ARG_UNUSED (type)) | |
| 196 { | |
| 197 gcc_unreachable (); | |
| 198 } | |
| 199 | |
| 200 /* Registration of machine- or os-specific builtin types. */ | |
| 201 void | |
| 202 lhd_register_builtin_type (tree ARG_UNUSED (type), | |
| 203 const char * ARG_UNUSED (name)) | |
| 204 { | |
| 205 } | |
| 206 | |
| 207 /* Invalid use of an incomplete type. */ | |
| 208 void | |
| 209 lhd_incomplete_type_error (const_tree ARG_UNUSED (value), const_tree type) | |
| 210 { | |
| 211 gcc_assert (TREE_CODE (type) == ERROR_MARK); | |
| 212 return; | |
| 213 } | |
| 214 | |
| 215 /* Provide a default routine for alias sets that always returns -1. This | |
| 216 is used by languages that don't need to do anything special. */ | |
| 217 | |
| 218 alias_set_type | |
| 219 lhd_get_alias_set (tree ARG_UNUSED (t)) | |
| 220 { | |
| 221 return -1; | |
| 222 } | |
| 223 | |
| 224 /* This is the default decl_printable_name function. */ | |
| 225 | |
| 226 const char * | |
| 227 lhd_decl_printable_name (tree decl, int ARG_UNUSED (verbosity)) | |
| 228 { | |
| 229 gcc_assert (decl && DECL_NAME (decl)); | |
| 230 return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
| 231 } | |
| 232 | |
| 233 /* This is the default dwarf_name function. */ | |
| 234 | |
| 235 const char * | |
| 236 lhd_dwarf_name (tree t, int verbosity) | |
| 237 { | |
| 238 gcc_assert (DECL_P (t)); | |
| 239 | |
| 240 return lang_hooks.decl_printable_name (t, verbosity); | |
| 241 } | |
| 242 | |
| 243 /* This compares two types for equivalence ("compatible" in C-based languages). | |
| 244 This routine should only return 1 if it is sure. It should not be used | |
| 245 in contexts where erroneously returning 0 causes problems. */ | |
| 246 | |
| 247 int | |
| 248 lhd_types_compatible_p (tree x, tree y) | |
| 249 { | |
| 250 return TYPE_MAIN_VARIANT (x) == TYPE_MAIN_VARIANT (y); | |
| 251 } | |
| 252 | |
| 253 /* lang_hooks.tree_dump.dump_tree: Dump language-specific parts of tree | |
| 254 nodes. Returns nonzero if it does not want the usual dumping of the | |
| 255 second argument. */ | |
| 256 | |
| 257 bool | |
| 258 lhd_tree_dump_dump_tree (void *di ATTRIBUTE_UNUSED, tree t ATTRIBUTE_UNUSED) | |
| 259 { | |
| 260 return false; | |
| 261 } | |
| 262 | |
| 263 /* lang_hooks.tree_dump.type_qual: Determine type qualifiers in a | |
| 264 language-specific way. */ | |
| 265 | |
| 266 int | |
| 267 lhd_tree_dump_type_quals (const_tree t) | |
| 268 { | |
| 269 return TYPE_QUALS (t); | |
| 270 } | |
| 271 | |
| 272 /* lang_hooks.gimplify_expr re-writes *EXPR_P into GIMPLE form. */ | |
| 273 | |
| 274 int | |
| 275 lhd_gimplify_expr (tree *expr_p ATTRIBUTE_UNUSED, | |
| 276 gimple_seq *pre_p ATTRIBUTE_UNUSED, | |
| 277 gimple_seq *post_p ATTRIBUTE_UNUSED) | |
| 278 { | |
| 279 return GS_UNHANDLED; | |
| 280 } | |
| 281 | |
| 282 /* lang_hooks.tree_size: Determine the size of a tree with code C, | |
| 283 which is a language-specific tree code in category tcc_constant or | |
| 284 tcc_exceptional. The default expects never to be called. */ | |
| 285 size_t | |
| 286 lhd_tree_size (enum tree_code c ATTRIBUTE_UNUSED) | |
| 287 { | |
| 288 gcc_unreachable (); | |
| 289 } | |
| 290 | |
| 291 /* Return true if decl, which is a function decl, may be called by a | |
| 292 sibcall. */ | |
| 293 | |
| 294 bool | |
| 295 lhd_decl_ok_for_sibcall (const_tree decl ATTRIBUTE_UNUSED) | |
| 296 { | |
| 297 return true; | |
| 298 } | |
| 299 | |
| 300 /* lang_hooks.decls.final_write_globals: perform final processing on | |
| 301 global variables. */ | |
| 302 void | |
| 303 write_global_declarations (void) | |
| 304 { | |
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305 tree globals, decl, *vec; |
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306 int len, i; |
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307 |
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308 /* This lang hook is dual-purposed, and also finalizes the |
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309 compilation unit. */ |
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310 cgraph_finalize_compilation_unit (); |
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311 |
| 0 | 312 /* Really define vars that have had only a tentative definition. |
| 313 Really output inline functions that must actually be callable | |
| 314 and have not been output so far. */ | |
| 315 | |
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316 globals = lang_hooks.decls.getdecls (); |
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317 len = list_length (globals); |
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318 vec = XNEWVEC (tree, len); |
| 0 | 319 |
| 320 /* Process the decls in reverse order--earliest first. | |
| 321 Put them into VEC from back to front, then take out from front. */ | |
| 322 | |
| 323 for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) | |
| 324 vec[len - i - 1] = decl; | |
| 325 | |
| 326 wrapup_global_declarations (vec, len); | |
| 327 check_global_declarations (vec, len); | |
| 328 emit_debug_global_declarations (vec, len); | |
| 329 | |
| 330 /* Clean up. */ | |
| 331 free (vec); | |
| 332 } | |
| 333 | |
| 334 /* Called to perform language-specific initialization of CTX. */ | |
| 335 void | |
| 336 lhd_initialize_diagnostics (struct diagnostic_context *ctx ATTRIBUTE_UNUSED) | |
| 337 { | |
| 338 } | |
| 339 | |
| 340 /* The default function to print out name of current function that caused | |
| 341 an error. */ | |
| 342 void | |
| 343 lhd_print_error_function (diagnostic_context *context, const char *file, | |
| 344 diagnostic_info *diagnostic) | |
| 345 { | |
| 346 if (diagnostic_last_function_changed (context, diagnostic)) | |
| 347 { | |
| 348 const char *old_prefix = context->printer->prefix; | |
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349 tree abstract_origin = diagnostic_abstract_origin (diagnostic); |
| 0 | 350 char *new_prefix = (file && abstract_origin == NULL) |
| 351 ? file_name_as_prefix (file) : NULL; | |
| 352 | |
| 353 pp_set_prefix (context->printer, new_prefix); | |
| 354 | |
| 355 if (current_function_decl == NULL) | |
| 356 pp_printf (context->printer, _("At top level:")); | |
| 357 else | |
| 358 { | |
| 359 tree fndecl, ao; | |
| 360 | |
| 361 if (abstract_origin) | |
| 362 { | |
| 363 ao = BLOCK_ABSTRACT_ORIGIN (abstract_origin); | |
| 364 while (TREE_CODE (ao) == BLOCK | |
| 365 && BLOCK_ABSTRACT_ORIGIN (ao) | |
| 366 && BLOCK_ABSTRACT_ORIGIN (ao) != ao) | |
| 367 ao = BLOCK_ABSTRACT_ORIGIN (ao); | |
| 368 gcc_assert (TREE_CODE (ao) == FUNCTION_DECL); | |
| 369 fndecl = ao; | |
| 370 } | |
| 371 else | |
| 372 fndecl = current_function_decl; | |
| 373 | |
| 374 if (TREE_CODE (TREE_TYPE (fndecl)) == METHOD_TYPE) | |
| 375 pp_printf | |
| 376 (context->printer, _("In member function %qs"), | |
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377 identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); |
| 0 | 378 else |
| 379 pp_printf | |
| 380 (context->printer, _("In function %qs"), | |
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381 identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); |
| 0 | 382 |
| 383 while (abstract_origin) | |
| 384 { | |
| 385 location_t *locus; | |
| 386 tree block = abstract_origin; | |
| 387 | |
| 388 locus = &BLOCK_SOURCE_LOCATION (block); | |
| 389 fndecl = NULL; | |
| 390 block = BLOCK_SUPERCONTEXT (block); | |
| 391 while (block && TREE_CODE (block) == BLOCK | |
| 392 && BLOCK_ABSTRACT_ORIGIN (block)) | |
| 393 { | |
| 394 ao = BLOCK_ABSTRACT_ORIGIN (block); | |
| 395 | |
| 396 while (TREE_CODE (ao) == BLOCK | |
| 397 && BLOCK_ABSTRACT_ORIGIN (ao) | |
| 398 && BLOCK_ABSTRACT_ORIGIN (ao) != ao) | |
| 399 ao = BLOCK_ABSTRACT_ORIGIN (ao); | |
| 400 | |
| 401 if (TREE_CODE (ao) == FUNCTION_DECL) | |
| 402 { | |
| 403 fndecl = ao; | |
| 404 break; | |
| 405 } | |
| 406 else if (TREE_CODE (ao) != BLOCK) | |
| 407 break; | |
| 408 | |
| 409 block = BLOCK_SUPERCONTEXT (block); | |
| 410 } | |
| 411 if (fndecl) | |
| 412 abstract_origin = block; | |
| 413 else | |
| 414 { | |
| 415 while (block && TREE_CODE (block) == BLOCK) | |
| 416 block = BLOCK_SUPERCONTEXT (block); | |
| 417 | |
| 418 if (block && TREE_CODE (block) == FUNCTION_DECL) | |
| 419 fndecl = block; | |
| 420 abstract_origin = NULL; | |
| 421 } | |
| 422 if (fndecl) | |
| 423 { | |
| 424 expanded_location s = expand_location (*locus); | |
| 425 pp_character (context->printer, ','); | |
| 426 pp_newline (context->printer); | |
| 427 if (s.file != NULL) | |
| 428 { | |
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429 if (flag_show_column) |
| 0 | 430 pp_printf (context->printer, |
| 431 _(" inlined from %qs at %s:%d:%d"), | |
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432 identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)), |
| 0 | 433 s.file, s.line, s.column); |
| 434 else | |
| 435 pp_printf (context->printer, | |
| 436 _(" inlined from %qs at %s:%d"), | |
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437 identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2)), |
| 0 | 438 s.file, s.line); |
| 439 | |
| 440 } | |
| 441 else | |
| 442 pp_printf (context->printer, _(" inlined from %qs"), | |
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443 identifier_to_locale (lang_hooks.decl_printable_name (fndecl, 2))); |
| 0 | 444 } |
| 445 } | |
| 446 pp_character (context->printer, ':'); | |
| 447 } | |
| 448 | |
| 449 diagnostic_set_last_function (context, diagnostic); | |
| 450 pp_flush (context->printer); | |
| 451 context->printer->prefix = old_prefix; | |
| 452 free ((char*) new_prefix); | |
| 453 } | |
| 454 } | |
| 455 | |
| 456 tree | |
| 457 lhd_callgraph_analyze_expr (tree *tp ATTRIBUTE_UNUSED, | |
| 458 int *walk_subtrees ATTRIBUTE_UNUSED) | |
| 459 { | |
| 460 return NULL; | |
| 461 } | |
| 462 | |
| 463 tree | |
| 464 lhd_make_node (enum tree_code code) | |
| 465 { | |
| 466 return make_node (code); | |
| 467 } | |
| 468 | |
| 469 HOST_WIDE_INT | |
| 470 lhd_to_target_charset (HOST_WIDE_INT c) | |
| 471 { | |
| 472 return c; | |
| 473 } | |
| 474 | |
| 475 tree | |
| 476 lhd_expr_to_decl (tree expr, bool *tc ATTRIBUTE_UNUSED, bool *se ATTRIBUTE_UNUSED) | |
| 477 { | |
| 478 return expr; | |
| 479 } | |
| 480 | |
| 481 /* Return sharing kind if OpenMP sharing attribute of DECL is | |
| 482 predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */ | |
| 483 | |
| 484 enum omp_clause_default_kind | |
| 485 lhd_omp_predetermined_sharing (tree decl ATTRIBUTE_UNUSED) | |
| 486 { | |
| 487 if (DECL_ARTIFICIAL (decl)) | |
| 488 return OMP_CLAUSE_DEFAULT_SHARED; | |
| 489 return OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
| 490 } | |
| 491 | |
| 492 /* Generate code to copy SRC to DST. */ | |
| 493 | |
| 494 tree | |
| 495 lhd_omp_assignment (tree clause ATTRIBUTE_UNUSED, tree dst, tree src) | |
| 496 { | |
| 497 return build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src); | |
| 498 } | |
| 499 | |
| 500 /* Register language specific type size variables as potentially OpenMP | |
| 501 firstprivate variables. */ | |
| 502 | |
| 503 void | |
| 504 lhd_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *c ATTRIBUTE_UNUSED, | |
| 505 tree t ATTRIBUTE_UNUSED) | |
| 506 { | |
| 507 } | |
| 508 | |
| 509 /* Common function for add_builtin_function and | |
| 510 add_builtin_function_ext_scope. */ | |
| 511 static tree | |
| 512 add_builtin_function_common (const char *name, | |
| 513 tree type, | |
| 514 int function_code, | |
| 515 enum built_in_class cl, | |
| 516 const char *library_name, | |
| 517 tree attrs, | |
| 518 tree (*hook) (tree)) | |
| 519 { | |
| 520 tree id = get_identifier (name); | |
|
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521 tree decl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL, id, type); |
| 0 | 522 |
| 523 TREE_PUBLIC (decl) = 1; | |
| 524 DECL_EXTERNAL (decl) = 1; | |
| 525 DECL_BUILT_IN_CLASS (decl) = cl; | |
| 526 | |
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527 DECL_FUNCTION_CODE (decl) = (enum built_in_function) function_code; |
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528 |
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529 /* DECL_FUNCTION_CODE is a bitfield; verify that the value fits. */ |
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530 gcc_assert (DECL_FUNCTION_CODE (decl) == function_code); |
| 0 | 531 |
| 532 if (library_name) | |
| 533 { | |
| 534 tree libname = get_identifier (library_name); | |
| 535 SET_DECL_ASSEMBLER_NAME (decl, libname); | |
| 536 } | |
| 537 | |
| 538 /* Possibly apply some default attributes to this built-in function. */ | |
| 539 if (attrs) | |
| 540 decl_attributes (&decl, attrs, ATTR_FLAG_BUILT_IN); | |
| 541 else | |
| 542 decl_attributes (&decl, NULL_TREE, 0); | |
| 543 | |
| 544 return hook (decl); | |
| 545 | |
| 546 } | |
| 547 | |
| 548 /* Create a builtin function. */ | |
| 549 | |
| 550 tree | |
| 551 add_builtin_function (const char *name, | |
| 552 tree type, | |
| 553 int function_code, | |
| 554 enum built_in_class cl, | |
| 555 const char *library_name, | |
| 556 tree attrs) | |
| 557 { | |
| 558 return add_builtin_function_common (name, type, function_code, cl, | |
| 559 library_name, attrs, | |
| 560 lang_hooks.builtin_function); | |
| 561 } | |
| 562 | |
| 563 /* Like add_builtin_function, but make sure the scope is the external scope. | |
| 564 This is used to delay putting in back end builtin functions until the ISA | |
| 565 that defines the builtin is declared via function specific target options, | |
| 566 which can save memory for machines like the x86_64 that have multiple ISAs. | |
| 567 If this points to the same function as builtin_function, the backend must | |
| 568 add all of the builtins at program initialization time. */ | |
| 569 | |
| 570 tree | |
| 571 add_builtin_function_ext_scope (const char *name, | |
| 572 tree type, | |
| 573 int function_code, | |
| 574 enum built_in_class cl, | |
| 575 const char *library_name, | |
| 576 tree attrs) | |
| 577 { | |
| 578 return add_builtin_function_common (name, type, function_code, cl, | |
| 579 library_name, attrs, | |
| 580 lang_hooks.builtin_function_ext_scope); | |
| 581 } | |
| 582 | |
| 583 tree | |
| 584 lhd_builtin_function (tree decl) | |
| 585 { | |
| 586 lang_hooks.decls.pushdecl (decl); | |
| 587 return decl; | |
| 588 } | |
|
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589 |
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590 /* LTO hooks. */ |
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591 |
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592 /* Used to save and restore any previously active section. */ |
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593 static section *saved_section; |
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594 |
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595 |
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596 /* Begin a new LTO output section named NAME. This default implementation |
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597 saves the old section and emits assembly code to switch to the new |
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598 section. */ |
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599 |
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600 void |
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601 lhd_begin_section (const char *name) |
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602 { |
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603 section *section; |
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604 |
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605 /* Save the old section so we can restore it in lto_end_asm_section. */ |
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606 gcc_assert (!saved_section); |
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607 saved_section = in_section; |
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608 if (!saved_section) |
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609 saved_section = text_section; |
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610 |
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611 /* Create a new section and switch to it. */ |
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612 section = get_section (name, SECTION_DEBUG, NULL); |
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613 switch_to_section (section); |
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614 } |
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615 |
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616 |
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617 /* Write DATA of length LEN to the current LTO output section. This default |
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618 implementation just calls assemble_string and frees BLOCK. */ |
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619 |
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620 void |
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621 lhd_append_data (const void *data, size_t len, void *block) |
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622 { |
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623 if (data) |
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624 assemble_string ((const char *)data, len); |
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625 free (block); |
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626 } |
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627 |
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628 |
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629 /* Finish the current LTO output section. This default implementation emits |
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630 assembly code to switch to any section previously saved by |
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631 lhd_begin_section. */ |
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632 |
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633 void |
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634 lhd_end_section (void) |
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635 { |
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636 if (saved_section) |
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637 { |
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638 switch_to_section (saved_section); |
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639 saved_section = NULL; |
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640 } |
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641 } |