1 /* Language-dependent hooks for LTO. 2 Copyright (C) 2009-2019 Free Software Foundation, Inc. 3 Contributed by CodeSourcery, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #include "config.h" 22 #include "system.h" 23 #include "coretypes.h" 24 #include "target.h" 25 #include "function.h" 26 #include "basic-block.h" 27 #include "tree.h" 28 #include "gimple.h" 29 #include "stringpool.h" 30 #include "diagnostic-core.h" 31 #include "stor-layout.h" 32 #include "langhooks.h" 33 #include "langhooks-def.h" 34 #include "debug.h" 35 #include "lto-tree.h" 36 #include "lto.h" 37 #include "stringpool.h" 38 #include "attribs.h" 39 40 /* LTO specific dumps. */ 41 int lto_link_dump_id, decl_merge_dump_id, partition_dump_id; 42 43 static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *); 44 static tree handle_leaf_attribute (tree *, tree, tree, int, bool *); 45 static tree handle_const_attribute (tree *, tree, tree, int, bool *); 46 static tree handle_malloc_attribute (tree *, tree, tree, int, bool *); 47 static tree handle_pure_attribute (tree *, tree, tree, int, bool *); 48 static tree handle_novops_attribute (tree *, tree, tree, int, bool *); 49 static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *); 50 static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *); 51 static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *); 52 static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *); 53 static tree handle_transaction_pure_attribute (tree *, tree, tree, int, bool *); 54 static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *); 55 static tree handle_patchable_function_entry_attribute (tree *, tree, tree, 56 int, bool *); 57 static tree ignore_attribute (tree *, tree, tree, int, bool *); 58 59 static tree handle_format_attribute (tree *, tree, tree, int, bool *); 60 static tree handle_fnspec_attribute (tree *, tree, tree, int, bool *); 61 static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); 62 63 /* Helper to define attribute exclusions. */ 64 #define ATTR_EXCL(name, function, type, variable) \ 65 { name, function, type, variable } 66 67 /* Define attributes that are mutually exclusive with one another. */ 68 static const struct attribute_spec::exclusions attr_noreturn_exclusions[] = 69 { 70 ATTR_EXCL ("noreturn", true, true, true), 71 ATTR_EXCL ("alloc_align", true, true, true), 72 ATTR_EXCL ("alloc_size", true, true, true), 73 ATTR_EXCL ("const", true, true, true), 74 ATTR_EXCL ("malloc", true, true, true), 75 ATTR_EXCL ("pure", true, true, true), 76 ATTR_EXCL ("returns_twice", true, true, true), 77 ATTR_EXCL ("warn_unused_result", true, true, true), 78 ATTR_EXCL (NULL, false, false, false), 79 }; 80 81 static const struct attribute_spec::exclusions attr_returns_twice_exclusions[] = 82 { 83 ATTR_EXCL ("noreturn", true, true, true), 84 ATTR_EXCL (NULL, false, false, false), 85 }; 86 87 static const struct attribute_spec::exclusions attr_const_pure_exclusions[] = 88 { 89 ATTR_EXCL ("const", true, true, true), 90 ATTR_EXCL ("noreturn", true, true, true), 91 ATTR_EXCL ("pure", true, true, true), 92 ATTR_EXCL (NULL, false, false, false) 93 }; 94 95 /* Table of machine-independent attributes supported in GIMPLE. */ 96 const struct attribute_spec lto_attribute_table[] = 97 { 98 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, 99 affects_type_identity, handler, exclude } */ 100 { "noreturn", 0, 0, true, false, false, false, 101 handle_noreturn_attribute, 102 attr_noreturn_exclusions }, 103 { "leaf", 0, 0, true, false, false, false, 104 handle_leaf_attribute, NULL }, 105 /* The same comments as for noreturn attributes apply to const ones. */ 106 { "const", 0, 0, true, false, false, false, 107 handle_const_attribute, 108 attr_const_pure_exclusions }, 109 { "malloc", 0, 0, true, false, false, false, 110 handle_malloc_attribute, NULL }, 111 { "pure", 0, 0, true, false, false, false, 112 handle_pure_attribute, 113 attr_const_pure_exclusions }, 114 { "no vops", 0, 0, true, false, false, false, 115 handle_novops_attribute, NULL }, 116 { "nonnull", 0, -1, false, true, true, false, 117 handle_nonnull_attribute, NULL }, 118 { "nothrow", 0, 0, true, false, false, false, 119 handle_nothrow_attribute, NULL }, 120 { "patchable_function_entry", 1, 2, true, false, false, false, 121 handle_patchable_function_entry_attribute, 122 NULL }, 123 { "returns_twice", 0, 0, true, false, false, false, 124 handle_returns_twice_attribute, 125 attr_returns_twice_exclusions }, 126 { "sentinel", 0, 1, false, true, true, false, 127 handle_sentinel_attribute, NULL }, 128 { "type generic", 0, 0, false, true, true, false, 129 handle_type_generic_attribute, NULL }, 130 { "fn spec", 1, 1, false, true, true, false, 131 handle_fnspec_attribute, NULL }, 132 { "transaction_pure", 0, 0, false, true, true, false, 133 handle_transaction_pure_attribute, NULL }, 134 /* For internal use only. The leading '*' both prevents its usage in 135 source code and signals that it may be overridden by machine tables. */ 136 { "*tm regparm", 0, 0, false, true, true, false, 137 ignore_attribute, NULL }, 138 { NULL, 0, 0, false, false, false, false, NULL, NULL } 139 }; 140 141 /* Give the specifications for the format attributes, used by C and all 142 descendants. */ 143 144 const struct attribute_spec lto_format_attribute_table[] = 145 { 146 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, 147 affects_type_identity, handler, exclude } */ 148 { "format", 3, 3, false, true, true, false, 149 handle_format_attribute, NULL }, 150 { "format_arg", 1, 1, false, true, true, false, 151 handle_format_arg_attribute, NULL }, 152 { NULL, 0, 0, false, false, false, false, NULL, NULL } 153 }; 154 155 enum built_in_attribute 156 { 157 #define DEF_ATTR_NULL_TREE(ENUM) ENUM, 158 #define DEF_ATTR_INT(ENUM, VALUE) ENUM, 159 #define DEF_ATTR_STRING(ENUM, VALUE) ENUM, 160 #define DEF_ATTR_IDENT(ENUM, STRING) ENUM, 161 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM, 162 #include "builtin-attrs.def" 163 #undef DEF_ATTR_NULL_TREE 164 #undef DEF_ATTR_INT 165 #undef DEF_ATTR_STRING 166 #undef DEF_ATTR_IDENT 167 #undef DEF_ATTR_TREE_LIST 168 ATTR_LAST 169 }; 170 171 static GTY(()) tree built_in_attributes[(int) ATTR_LAST]; 172 173 /* Builtin types. */ 174 175 enum lto_builtin_type 176 { 177 #define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME, 178 #define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME, 179 #define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME, 180 #define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME, 181 #define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME, 182 #define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME, 183 #define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME, 184 #define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 185 ARG6) NAME, 186 #define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 187 ARG6, ARG7) NAME, 188 #define DEF_FUNCTION_TYPE_8(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 189 ARG6, ARG7, ARG8) NAME, 190 #define DEF_FUNCTION_TYPE_9(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 191 ARG6, ARG7, ARG8, ARG9) NAME, 192 #define DEF_FUNCTION_TYPE_10(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 193 ARG6, ARG7, ARG8, ARG9, ARG10) NAME, 194 #define DEF_FUNCTION_TYPE_11(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 195 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) NAME, 196 #define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME, 197 #define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME, 198 #define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME, 199 #define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME, 200 #define DEF_FUNCTION_TYPE_VAR_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME, 201 #define DEF_FUNCTION_TYPE_VAR_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG6) \ 202 NAME, 203 #define DEF_FUNCTION_TYPE_VAR_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 204 ARG6) NAME, 205 #define DEF_FUNCTION_TYPE_VAR_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 206 ARG6, ARG7) NAME, 207 #define DEF_POINTER_TYPE(NAME, TYPE) NAME, 208 #include "builtin-types.def" 209 #undef DEF_PRIMITIVE_TYPE 210 #undef DEF_FUNCTION_TYPE_0 211 #undef DEF_FUNCTION_TYPE_1 212 #undef DEF_FUNCTION_TYPE_2 213 #undef DEF_FUNCTION_TYPE_3 214 #undef DEF_FUNCTION_TYPE_4 215 #undef DEF_FUNCTION_TYPE_5 216 #undef DEF_FUNCTION_TYPE_6 217 #undef DEF_FUNCTION_TYPE_7 218 #undef DEF_FUNCTION_TYPE_8 219 #undef DEF_FUNCTION_TYPE_9 220 #undef DEF_FUNCTION_TYPE_10 221 #undef DEF_FUNCTION_TYPE_11 222 #undef DEF_FUNCTION_TYPE_VAR_0 223 #undef DEF_FUNCTION_TYPE_VAR_1 224 #undef DEF_FUNCTION_TYPE_VAR_2 225 #undef DEF_FUNCTION_TYPE_VAR_3 226 #undef DEF_FUNCTION_TYPE_VAR_4 227 #undef DEF_FUNCTION_TYPE_VAR_5 228 #undef DEF_FUNCTION_TYPE_VAR_6 229 #undef DEF_FUNCTION_TYPE_VAR_7 230 #undef DEF_POINTER_TYPE 231 BT_LAST 232 }; 233 234 typedef enum lto_builtin_type builtin_type; 235 236 static GTY(()) tree builtin_types[(int) BT_LAST + 1]; 237 238 static GTY(()) tree string_type_node; 239 static GTY(()) tree const_string_type_node; 240 static GTY(()) tree wint_type_node; 241 static GTY(()) tree intmax_type_node; 242 static GTY(()) tree uintmax_type_node; 243 static GTY(()) tree signed_size_type_node; 244 245 /* Flags needed to process builtins.def. */ 246 int flag_isoc94; 247 int flag_isoc99; 248 int flag_isoc11; 249 250 /* Attribute handlers. */ 251 252 /* Handle a "noreturn" attribute; arguments as in 253 struct attribute_spec.handler. */ 254 255 static tree 256 handle_noreturn_attribute (tree *node, tree ARG_UNUSED (name), 257 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 258 bool * ARG_UNUSED (no_add_attrs)) 259 { 260 tree type = TREE_TYPE (*node); 261 262 if (TREE_CODE (*node) == FUNCTION_DECL) 263 TREE_THIS_VOLATILE (*node) = 1; 264 else if (TREE_CODE (type) == POINTER_TYPE 265 && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) 266 TREE_TYPE (*node) 267 = build_pointer_type 268 (build_type_variant (TREE_TYPE (type), 269 TYPE_READONLY (TREE_TYPE (type)), 1)); 270 else 271 gcc_unreachable (); 272 273 return NULL_TREE; 274 } 275 276 /* Handle a "leaf" attribute; arguments as in 277 struct attribute_spec.handler. */ 278 279 static tree 280 handle_leaf_attribute (tree *node, tree name, 281 tree ARG_UNUSED (args), 282 int ARG_UNUSED (flags), bool *no_add_attrs) 283 { 284 if (TREE_CODE (*node) != FUNCTION_DECL) 285 { 286 warning (OPT_Wattributes, "%qE attribute ignored", name); 287 *no_add_attrs = true; 288 } 289 if (!TREE_PUBLIC (*node)) 290 { 291 warning (OPT_Wattributes, "%qE attribute has no effect on unit local functions", name); 292 *no_add_attrs = true; 293 } 294 295 return NULL_TREE; 296 } 297 298 /* Handle a "const" attribute; arguments as in 299 struct attribute_spec.handler. */ 300 301 static tree 302 handle_const_attribute (tree *node, tree ARG_UNUSED (name), 303 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 304 bool * ARG_UNUSED (no_add_attrs)) 305 { 306 if (TREE_CODE (*node) != FUNCTION_DECL 307 || !fndecl_built_in_p (*node)) 308 inform (UNKNOWN_LOCATION, "%s:%s: %E: %E", __FILE__, __func__, *node, name); 309 310 tree type = TREE_TYPE (*node); 311 312 /* See FIXME comment on noreturn in c_common_attribute_table. */ 313 if (TREE_CODE (*node) == FUNCTION_DECL) 314 TREE_READONLY (*node) = 1; 315 else if (TREE_CODE (type) == POINTER_TYPE 316 && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) 317 TREE_TYPE (*node) 318 = build_pointer_type 319 (build_type_variant (TREE_TYPE (type), 1, 320 TREE_THIS_VOLATILE (TREE_TYPE (type)))); 321 else 322 gcc_unreachable (); 323 324 return NULL_TREE; 325 } 326 327 328 /* Handle a "malloc" attribute; arguments as in 329 struct attribute_spec.handler. */ 330 331 static tree 332 handle_malloc_attribute (tree *node, tree ARG_UNUSED (name), 333 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 334 bool * ARG_UNUSED (no_add_attrs)) 335 { 336 if (TREE_CODE (*node) == FUNCTION_DECL 337 && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (*node)))) 338 DECL_IS_MALLOC (*node) = 1; 339 else 340 gcc_unreachable (); 341 342 return NULL_TREE; 343 } 344 345 346 /* Handle a "pure" attribute; arguments as in 347 struct attribute_spec.handler. */ 348 349 static tree 350 handle_pure_attribute (tree *node, tree ARG_UNUSED (name), 351 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 352 bool * ARG_UNUSED (no_add_attrs)) 353 { 354 if (TREE_CODE (*node) == FUNCTION_DECL) 355 DECL_PURE_P (*node) = 1; 356 else 357 gcc_unreachable (); 358 359 return NULL_TREE; 360 } 361 362 363 /* Handle a "no vops" attribute; arguments as in 364 struct attribute_spec.handler. */ 365 366 static tree 367 handle_novops_attribute (tree *node, tree ARG_UNUSED (name), 368 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 369 bool *ARG_UNUSED (no_add_attrs)) 370 { 371 gcc_assert (TREE_CODE (*node) == FUNCTION_DECL); 372 DECL_IS_NOVOPS (*node) = 1; 373 return NULL_TREE; 374 } 375 376 377 /* Helper for nonnull attribute handling; fetch the operand number 378 from the attribute argument list. */ 379 380 static bool 381 get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp) 382 { 383 /* Verify the arg number is a constant. */ 384 if (!tree_fits_uhwi_p (arg_num_expr)) 385 return false; 386 387 *valp = TREE_INT_CST_LOW (arg_num_expr); 388 return true; 389 } 390 391 /* Handle the "nonnull" attribute. */ 392 393 static tree 394 handle_nonnull_attribute (tree *node, tree ARG_UNUSED (name), 395 tree args, int ARG_UNUSED (flags), 396 bool * ARG_UNUSED (no_add_attrs)) 397 { 398 tree type = *node; 399 400 /* If no arguments are specified, all pointer arguments should be 401 non-null. Verify a full prototype is given so that the arguments 402 will have the correct types when we actually check them later. 403 Avoid diagnosing type-generic built-ins since those have no 404 prototype. */ 405 if (!args) 406 { 407 gcc_assert (prototype_p (type) 408 || !TYPE_ATTRIBUTES (type) 409 || lookup_attribute ("type generic", TYPE_ATTRIBUTES (type))); 410 411 return NULL_TREE; 412 } 413 414 /* Argument list specified. Verify that each argument number references 415 a pointer argument. */ 416 for (; args; args = TREE_CHAIN (args)) 417 { 418 tree argument; 419 unsigned HOST_WIDE_INT arg_num = 0, ck_num; 420 421 if (!get_nonnull_operand (TREE_VALUE (args), &arg_num)) 422 gcc_unreachable (); 423 424 argument = TYPE_ARG_TYPES (type); 425 if (argument) 426 { 427 for (ck_num = 1; ; ck_num++) 428 { 429 if (!argument || ck_num == arg_num) 430 break; 431 argument = TREE_CHAIN (argument); 432 } 433 434 gcc_assert (argument 435 && TREE_CODE (TREE_VALUE (argument)) == POINTER_TYPE); 436 } 437 } 438 439 return NULL_TREE; 440 } 441 442 443 /* Handle a "nothrow" attribute; arguments as in 444 struct attribute_spec.handler. */ 445 446 static tree 447 handle_nothrow_attribute (tree *node, tree ARG_UNUSED (name), 448 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 449 bool * ARG_UNUSED (no_add_attrs)) 450 { 451 if (TREE_CODE (*node) == FUNCTION_DECL) 452 TREE_NOTHROW (*node) = 1; 453 else 454 gcc_unreachable (); 455 456 return NULL_TREE; 457 } 458 459 460 /* Handle a "sentinel" attribute. */ 461 462 static tree 463 handle_sentinel_attribute (tree *node, tree ARG_UNUSED (name), tree args, 464 int ARG_UNUSED (flags), 465 bool * ARG_UNUSED (no_add_attrs)) 466 { 467 gcc_assert (stdarg_p (*node)); 468 469 if (args) 470 { 471 tree position = TREE_VALUE (args); 472 gcc_assert (TREE_CODE (position) == INTEGER_CST); 473 if (tree_int_cst_lt (position, integer_zero_node)) 474 gcc_unreachable (); 475 } 476 477 return NULL_TREE; 478 } 479 480 /* Handle a "type_generic" attribute. */ 481 482 static tree 483 handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name), 484 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 485 bool * ARG_UNUSED (no_add_attrs)) 486 { 487 /* Ensure we have a function type. */ 488 gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE); 489 490 /* Ensure we have a variadic function. */ 491 gcc_assert (!prototype_p (*node) || stdarg_p (*node)); 492 493 return NULL_TREE; 494 } 495 496 /* Handle a "transaction_pure" attribute. */ 497 498 static tree 499 handle_transaction_pure_attribute (tree *node, tree ARG_UNUSED (name), 500 tree ARG_UNUSED (args), 501 int ARG_UNUSED (flags), 502 bool * ARG_UNUSED (no_add_attrs)) 503 { 504 /* Ensure we have a function type. */ 505 gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE); 506 507 return NULL_TREE; 508 } 509 510 /* Handle a "returns_twice" attribute. */ 511 512 static tree 513 handle_returns_twice_attribute (tree *node, tree ARG_UNUSED (name), 514 tree ARG_UNUSED (args), 515 int ARG_UNUSED (flags), 516 bool * ARG_UNUSED (no_add_attrs)) 517 { 518 gcc_assert (TREE_CODE (*node) == FUNCTION_DECL); 519 520 DECL_IS_RETURNS_TWICE (*node) = 1; 521 522 return NULL_TREE; 523 } 524 525 static tree 526 handle_patchable_function_entry_attribute (tree *, tree, tree, int, bool *) 527 { 528 /* Nothing to be done here. */ 529 return NULL_TREE; 530 } 531 532 /* Ignore the given attribute. Used when this attribute may be usefully 533 overridden by the target, but is not used generically. */ 534 535 static tree 536 ignore_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), 537 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 538 bool *no_add_attrs) 539 { 540 *no_add_attrs = true; 541 return NULL_TREE; 542 } 543 544 /* Handle a "format" attribute; arguments as in 545 struct attribute_spec.handler. */ 546 547 static tree 548 handle_format_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), 549 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 550 bool *no_add_attrs) 551 { 552 *no_add_attrs = true; 553 return NULL_TREE; 554 } 555 556 557 /* Handle a "format_arg" attribute; arguments as in 558 struct attribute_spec.handler. */ 559 560 tree 561 handle_format_arg_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), 562 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 563 bool *no_add_attrs) 564 { 565 *no_add_attrs = true; 566 return NULL_TREE; 567 } 568 569 570 /* Handle a "fn spec" attribute; arguments as in 571 struct attribute_spec.handler. */ 572 573 static tree 574 handle_fnspec_attribute (tree *node ATTRIBUTE_UNUSED, tree ARG_UNUSED (name), 575 tree args, int ARG_UNUSED (flags), 576 bool *no_add_attrs ATTRIBUTE_UNUSED) 577 { 578 gcc_assert (args 579 && TREE_CODE (TREE_VALUE (args)) == STRING_CST 580 && !TREE_CHAIN (args)); 581 return NULL_TREE; 582 } 583 584 /* Cribbed from c-common.c. */ 585 586 static void 587 def_fn_type (builtin_type def, builtin_type ret, bool var, int n, ...) 588 { 589 tree t; 590 tree *args = XALLOCAVEC (tree, n); 591 va_list list; 592 int i; 593 bool err = false; 594 595 va_start (list, n); 596 for (i = 0; i < n; ++i) 597 { 598 builtin_type a = (builtin_type) va_arg (list, int); 599 t = builtin_types[a]; 600 if (t == error_mark_node) 601 err = true; 602 args[i] = t; 603 } 604 va_end (list); 605 606 t = builtin_types[ret]; 607 if (err) 608 t = error_mark_node; 609 if (t == error_mark_node) 610 ; 611 else if (var) 612 t = build_varargs_function_type_array (t, n, args); 613 else 614 t = build_function_type_array (t, n, args); 615 616 builtin_types[def] = t; 617 } 618 619 /* Used to help initialize the builtin-types.def table. When a type of 620 the correct size doesn't exist, use error_mark_node instead of NULL. 621 The later results in segfaults even when a decl using the type doesn't 622 get invoked. */ 623 624 static tree 625 builtin_type_for_size (int size, bool unsignedp) 626 { 627 tree type = lang_hooks.types.type_for_size (size, unsignedp); 628 return type ? type : error_mark_node; 629 } 630 631 /* Support for DEF_BUILTIN. */ 632 633 static void 634 def_builtin_1 (enum built_in_function fncode, const char *name, 635 enum built_in_class fnclass, tree fntype, tree libtype, 636 bool both_p, bool fallback_p, bool nonansi_p, 637 tree fnattrs, bool implicit_p) 638 { 639 tree decl; 640 const char *libname; 641 642 if (fntype == error_mark_node) 643 return; 644 645 libname = name + strlen ("__builtin_"); 646 decl = add_builtin_function (name, fntype, fncode, fnclass, 647 (fallback_p ? libname : NULL), 648 fnattrs); 649 650 if (both_p 651 && !flag_no_builtin 652 && !(nonansi_p && flag_no_nonansi_builtin)) 653 add_builtin_function (libname, libtype, fncode, fnclass, 654 NULL, fnattrs); 655 656 set_builtin_decl (fncode, decl, implicit_p); 657 } 658 659 660 /* Initialize the attribute table for all the supported builtins. */ 661 662 static void 663 lto_init_attributes (void) 664 { 665 /* Fill in the built_in_attributes array. */ 666 #define DEF_ATTR_NULL_TREE(ENUM) \ 667 built_in_attributes[(int) ENUM] = NULL_TREE; 668 #define DEF_ATTR_INT(ENUM, VALUE) \ 669 built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE); 670 #define DEF_ATTR_STRING(ENUM, VALUE) \ 671 built_in_attributes[(int) ENUM] = build_string (strlen (VALUE), VALUE); 672 #define DEF_ATTR_IDENT(ENUM, STRING) \ 673 built_in_attributes[(int) ENUM] = get_identifier (STRING); 674 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \ 675 built_in_attributes[(int) ENUM] \ 676 = tree_cons (built_in_attributes[(int) PURPOSE], \ 677 built_in_attributes[(int) VALUE], \ 678 built_in_attributes[(int) CHAIN]); 679 #include "builtin-attrs.def" 680 #undef DEF_ATTR_NULL_TREE 681 #undef DEF_ATTR_INT 682 #undef DEF_ATTR_STRING 683 #undef DEF_ATTR_IDENT 684 #undef DEF_ATTR_TREE_LIST 685 } 686 687 /* Create builtin types and functions. VA_LIST_REF_TYPE_NODE and 688 VA_LIST_ARG_TYPE_NODE are used in builtin-types.def. */ 689 690 static void 691 lto_define_builtins (tree va_list_ref_type_node ATTRIBUTE_UNUSED, 692 tree va_list_arg_type_node ATTRIBUTE_UNUSED) 693 { 694 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \ 695 builtin_types[ENUM] = VALUE; 696 #define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \ 697 def_fn_type (ENUM, RETURN, 0, 0); 698 #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \ 699 def_fn_type (ENUM, RETURN, 0, 1, ARG1); 700 #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \ 701 def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2); 702 #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \ 703 def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3); 704 #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \ 705 def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4); 706 #define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \ 707 def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5); 708 #define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 709 ARG6) \ 710 def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6); 711 #define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 712 ARG6, ARG7) \ 713 def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7); 714 #define DEF_FUNCTION_TYPE_8(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 715 ARG6, ARG7, ARG8) \ 716 def_fn_type (ENUM, RETURN, 0, 8, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 717 ARG7, ARG8); 718 #define DEF_FUNCTION_TYPE_9(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 719 ARG6, ARG7, ARG8, ARG9) \ 720 def_fn_type (ENUM, RETURN, 0, 9, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 721 ARG7, ARG8, ARG9); 722 #define DEF_FUNCTION_TYPE_10(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 723 ARG6, ARG7, ARG8, ARG9, ARG10) \ 724 def_fn_type (ENUM, RETURN, 0, 10, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 725 ARG7, ARG8, ARG9, ARG10); 726 #define DEF_FUNCTION_TYPE_11(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 727 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) \ 728 def_fn_type (ENUM, RETURN, 0, 11, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 729 ARG7, ARG8, ARG9, ARG10, ARG11); 730 #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \ 731 def_fn_type (ENUM, RETURN, 1, 0); 732 #define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \ 733 def_fn_type (ENUM, RETURN, 1, 1, ARG1); 734 #define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \ 735 def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2); 736 #define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \ 737 def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3); 738 #define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \ 739 def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4); 740 #define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \ 741 def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5); 742 #define DEF_FUNCTION_TYPE_VAR_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 743 ARG6) \ 744 def_fn_type (ENUM, RETURN, 1, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6); 745 #define DEF_FUNCTION_TYPE_VAR_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 746 ARG6, ARG7) \ 747 def_fn_type (ENUM, RETURN, 1, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7); 748 #define DEF_POINTER_TYPE(ENUM, TYPE) \ 749 builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]); 750 751 #include "builtin-types.def" 752 753 #undef DEF_PRIMITIVE_TYPE 754 #undef DEF_FUNCTION_TYPE_0 755 #undef DEF_FUNCTION_TYPE_1 756 #undef DEF_FUNCTION_TYPE_2 757 #undef DEF_FUNCTION_TYPE_3 758 #undef DEF_FUNCTION_TYPE_4 759 #undef DEF_FUNCTION_TYPE_5 760 #undef DEF_FUNCTION_TYPE_6 761 #undef DEF_FUNCTION_TYPE_7 762 #undef DEF_FUNCTION_TYPE_8 763 #undef DEF_FUNCTION_TYPE_9 764 #undef DEF_FUNCTION_TYPE_10 765 #undef DEF_FUNCTION_TYPE_11 766 #undef DEF_FUNCTION_TYPE_VAR_0 767 #undef DEF_FUNCTION_TYPE_VAR_1 768 #undef DEF_FUNCTION_TYPE_VAR_2 769 #undef DEF_FUNCTION_TYPE_VAR_3 770 #undef DEF_FUNCTION_TYPE_VAR_4 771 #undef DEF_FUNCTION_TYPE_VAR_5 772 #undef DEF_FUNCTION_TYPE_VAR_6 773 #undef DEF_FUNCTION_TYPE_VAR_7 774 #undef DEF_POINTER_TYPE 775 builtin_types[(int) BT_LAST] = NULL_TREE; 776 777 lto_init_attributes (); 778 779 #define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P,\ 780 NONANSI_P, ATTRS, IMPLICIT, COND) \ 781 if (NAME && COND) \ 782 def_builtin_1 (ENUM, NAME, CLASS, builtin_types[(int) TYPE], \ 783 builtin_types[(int) LIBTYPE], BOTH_P, FALLBACK_P, \ 784 NONANSI_P, built_in_attributes[(int) ATTRS], IMPLICIT); 785 #include "builtins.def" 786 } 787 788 static GTY(()) tree registered_builtin_types; 789 790 /* Language hooks. */ 791 792 static unsigned int 793 lto_option_lang_mask (void) 794 { 795 return CL_LTO; 796 } 797 798 static bool 799 lto_complain_wrong_lang_p (const struct cl_option *option ATTRIBUTE_UNUSED) 800 { 801 /* The LTO front end inherits all the options from the first front 802 end that was used. However, not all the original front end 803 options make sense in LTO. 804 805 A real solution would be to filter this in collect2, but collect2 806 does not have access to all the option attributes to know what to 807 filter. So, in lto1 we silently accept inherited flags and do 808 nothing about it. */ 809 return false; 810 } 811 812 static void 813 lto_init_options_struct (struct gcc_options *opts) 814 { 815 /* By default, C99-like requirements for complex multiply and divide. 816 ??? Until the complex method is encoded in the IL this is the only 817 safe choice. This will pessimize Fortran code with LTO unless 818 people specify a complex method manually or use -ffast-math. */ 819 opts->x_flag_complex_method = 2; 820 } 821 822 /* Handle command-line option SCODE. If the option takes an argument, it is 823 stored in ARG, which is otherwise NULL. VALUE holds either a numerical 824 argument or a binary value indicating whether the positive or negative form 825 of the option was supplied. */ 826 827 const char *resolution_file_name; 828 static bool 829 lto_handle_option (size_t scode, const char *arg, 830 HOST_WIDE_INT value ATTRIBUTE_UNUSED, 831 int kind ATTRIBUTE_UNUSED, 832 location_t loc ATTRIBUTE_UNUSED, 833 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED) 834 { 835 enum opt_code code = (enum opt_code) scode; 836 bool result = true; 837 838 switch (code) 839 { 840 case OPT_fresolution_: 841 resolution_file_name = arg; 842 break; 843 844 case OPT_Wabi: 845 warn_psabi = value; 846 break; 847 848 case OPT_fwpa: 849 flag_wpa = value ? "" : NULL; 850 break; 851 852 default: 853 break; 854 } 855 856 return result; 857 } 858 859 /* Perform post-option processing. Does additional initialization based on 860 command-line options. PFILENAME is the main input filename. Returns false 861 to enable subsequent back-end initialization. */ 862 863 static bool 864 lto_post_options (const char **pfilename ATTRIBUTE_UNUSED) 865 { 866 /* -fltrans and -fwpa are mutually exclusive. Check for that here. */ 867 if (flag_wpa && flag_ltrans) 868 error ("%<-fwpa%> and %<-fltrans%> are mutually exclusive"); 869 870 if (flag_ltrans) 871 { 872 flag_generate_lto = 0; 873 874 /* During LTRANS, we are not looking at the whole program, only 875 a subset of the whole callgraph. */ 876 flag_whole_program = 0; 877 } 878 879 if (flag_wpa) 880 flag_generate_lto = 1; 881 882 /* Initialize the codegen flags according to the output type. */ 883 switch (flag_lto_linker_output) 884 { 885 case LTO_LINKER_OUTPUT_REL: /* .o: incremental link producing LTO IL */ 886 /* Configure compiler same way as normal frontend would do with -flto: 887 this way we read the trees (declarations & types), symbol table, 888 optimization summaries and link them. Subsequently we output new LTO 889 file. */ 890 flag_lto = ""; 891 flag_incremental_link = INCREMENTAL_LINK_LTO; 892 flag_whole_program = 0; 893 flag_wpa = 0; 894 flag_generate_lto = 1; 895 /* It would be cool to produce .o file directly, but our current 896 simple objects does not contain the lto symbol markers. Go the slow 897 way through the asm file. */ 898 lang_hooks.lto.begin_section = lhd_begin_section; 899 lang_hooks.lto.append_data = lhd_append_data; 900 lang_hooks.lto.end_section = lhd_end_section; 901 if (flag_ltrans) 902 error ("%<-flinker-output=rel%> and %<-fltrans%> are mutually " 903 "exclussive"); 904 break; 905 906 case LTO_LINKER_OUTPUT_NOLTOREL: /* .o: incremental link producing asm */ 907 flag_whole_program = 0; 908 flag_incremental_link = INCREMENTAL_LINK_NOLTO; 909 break; 910 911 case LTO_LINKER_OUTPUT_DYN: /* .so: PID library */ 912 /* On some targets, like i386 it makes sense to build PIC library wihout 913 -fpic for performance reasons. So no need to adjust flags. */ 914 break; 915 916 case LTO_LINKER_OUTPUT_PIE: /* PIE binary */ 917 /* If -fPIC or -fPIE was used at compile time, be sure that 918 flag_pie is 2. */ 919 flag_pie = MAX (flag_pie, flag_pic); 920 flag_pic = flag_pie; 921 flag_shlib = 0; 922 break; 923 924 case LTO_LINKER_OUTPUT_EXEC: /* Normal executable */ 925 flag_pic = 0; 926 flag_pie = 0; 927 flag_shlib = 0; 928 break; 929 930 case LTO_LINKER_OUTPUT_UNKNOWN: 931 break; 932 } 933 934 /* Excess precision other than "fast" requires front-end 935 support. */ 936 flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; 937 938 /* When partitioning, we can tear appart STRING_CSTs uses from the same 939 TU into multiple partitions. Without constant merging the constants 940 might not be equal at runtime. See PR50199. */ 941 if (!flag_merge_constants) 942 flag_merge_constants = 1; 943 944 /* Initialize the compiler back end. */ 945 return false; 946 } 947 948 /* Return a data type that has machine mode MODE. 949 If the mode is an integer, 950 then UNSIGNEDP selects between signed and unsigned types. 951 If the mode is a fixed-point mode, 952 then UNSIGNEDP selects between saturating and nonsaturating types. */ 953 954 static tree 955 lto_type_for_mode (machine_mode mode, int unsigned_p) 956 { 957 tree t; 958 int i; 959 960 if (mode == TYPE_MODE (integer_type_node)) 961 return unsigned_p ? unsigned_type_node : integer_type_node; 962 963 if (mode == TYPE_MODE (signed_char_type_node)) 964 return unsigned_p ? unsigned_char_type_node : signed_char_type_node; 965 966 if (mode == TYPE_MODE (short_integer_type_node)) 967 return unsigned_p ? short_unsigned_type_node : short_integer_type_node; 968 969 if (mode == TYPE_MODE (long_integer_type_node)) 970 return unsigned_p ? long_unsigned_type_node : long_integer_type_node; 971 972 if (mode == TYPE_MODE (long_long_integer_type_node)) 973 return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node; 974 975 for (i = 0; i < NUM_INT_N_ENTS; i ++) 976 if (int_n_enabled_p[i] 977 && mode == int_n_data[i].m) 978 return (unsigned_p ? int_n_trees[i].unsigned_type 979 : int_n_trees[i].signed_type); 980 981 if (mode == QImode) 982 return unsigned_p ? unsigned_intQI_type_node : intQI_type_node; 983 984 if (mode == HImode) 985 return unsigned_p ? unsigned_intHI_type_node : intHI_type_node; 986 987 if (mode == SImode) 988 return unsigned_p ? unsigned_intSI_type_node : intSI_type_node; 989 990 if (mode == DImode) 991 return unsigned_p ? unsigned_intDI_type_node : intDI_type_node; 992 993 #if HOST_BITS_PER_WIDE_INT >= 64 994 if (mode == TYPE_MODE (intTI_type_node)) 995 return unsigned_p ? unsigned_intTI_type_node : intTI_type_node; 996 #endif 997 998 if (mode == TYPE_MODE (float_type_node)) 999 return float_type_node; 1000 1001 if (mode == TYPE_MODE (double_type_node)) 1002 return double_type_node; 1003 1004 if (mode == TYPE_MODE (long_double_type_node)) 1005 return long_double_type_node; 1006 1007 if (mode == TYPE_MODE (void_type_node)) 1008 return void_type_node; 1009 1010 if (mode == TYPE_MODE (build_pointer_type (char_type_node)) 1011 || mode == TYPE_MODE (build_pointer_type (integer_type_node))) 1012 { 1013 unsigned int precision 1014 = GET_MODE_PRECISION (as_a <scalar_int_mode> (mode)); 1015 return (unsigned_p 1016 ? make_unsigned_type (precision) 1017 : make_signed_type (precision)); 1018 } 1019 1020 if (COMPLEX_MODE_P (mode)) 1021 { 1022 machine_mode inner_mode; 1023 tree inner_type; 1024 1025 if (mode == TYPE_MODE (complex_float_type_node)) 1026 return complex_float_type_node; 1027 if (mode == TYPE_MODE (complex_double_type_node)) 1028 return complex_double_type_node; 1029 if (mode == TYPE_MODE (complex_long_double_type_node)) 1030 return complex_long_double_type_node; 1031 1032 if (mode == TYPE_MODE (complex_integer_type_node) && !unsigned_p) 1033 return complex_integer_type_node; 1034 1035 inner_mode = GET_MODE_INNER (mode); 1036 inner_type = lto_type_for_mode (inner_mode, unsigned_p); 1037 if (inner_type != NULL_TREE) 1038 return build_complex_type (inner_type); 1039 } 1040 else if (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL 1041 && valid_vector_subparts_p (GET_MODE_NUNITS (mode))) 1042 { 1043 unsigned int elem_bits = vector_element_size (GET_MODE_BITSIZE (mode), 1044 GET_MODE_NUNITS (mode)); 1045 tree bool_type = build_nonstandard_boolean_type (elem_bits); 1046 return build_vector_type_for_mode (bool_type, mode); 1047 } 1048 else if (VECTOR_MODE_P (mode) 1049 && valid_vector_subparts_p (GET_MODE_NUNITS (mode))) 1050 { 1051 machine_mode inner_mode = GET_MODE_INNER (mode); 1052 tree inner_type = lto_type_for_mode (inner_mode, unsigned_p); 1053 if (inner_type != NULL_TREE) 1054 return build_vector_type_for_mode (inner_type, mode); 1055 } 1056 1057 if (mode == TYPE_MODE (dfloat32_type_node)) 1058 return dfloat32_type_node; 1059 if (mode == TYPE_MODE (dfloat64_type_node)) 1060 return dfloat64_type_node; 1061 if (mode == TYPE_MODE (dfloat128_type_node)) 1062 return dfloat128_type_node; 1063 1064 if (ALL_SCALAR_FIXED_POINT_MODE_P (mode)) 1065 { 1066 if (mode == TYPE_MODE (short_fract_type_node)) 1067 return unsigned_p ? sat_short_fract_type_node : short_fract_type_node; 1068 if (mode == TYPE_MODE (fract_type_node)) 1069 return unsigned_p ? sat_fract_type_node : fract_type_node; 1070 if (mode == TYPE_MODE (long_fract_type_node)) 1071 return unsigned_p ? sat_long_fract_type_node : long_fract_type_node; 1072 if (mode == TYPE_MODE (long_long_fract_type_node)) 1073 return unsigned_p ? sat_long_long_fract_type_node 1074 : long_long_fract_type_node; 1075 1076 if (mode == TYPE_MODE (unsigned_short_fract_type_node)) 1077 return unsigned_p ? sat_unsigned_short_fract_type_node 1078 : unsigned_short_fract_type_node; 1079 if (mode == TYPE_MODE (unsigned_fract_type_node)) 1080 return unsigned_p ? sat_unsigned_fract_type_node 1081 : unsigned_fract_type_node; 1082 if (mode == TYPE_MODE (unsigned_long_fract_type_node)) 1083 return unsigned_p ? sat_unsigned_long_fract_type_node 1084 : unsigned_long_fract_type_node; 1085 if (mode == TYPE_MODE (unsigned_long_long_fract_type_node)) 1086 return unsigned_p ? sat_unsigned_long_long_fract_type_node 1087 : unsigned_long_long_fract_type_node; 1088 1089 if (mode == TYPE_MODE (short_accum_type_node)) 1090 return unsigned_p ? sat_short_accum_type_node : short_accum_type_node; 1091 if (mode == TYPE_MODE (accum_type_node)) 1092 return unsigned_p ? sat_accum_type_node : accum_type_node; 1093 if (mode == TYPE_MODE (long_accum_type_node)) 1094 return unsigned_p ? sat_long_accum_type_node : long_accum_type_node; 1095 if (mode == TYPE_MODE (long_long_accum_type_node)) 1096 return unsigned_p ? sat_long_long_accum_type_node 1097 : long_long_accum_type_node; 1098 1099 if (mode == TYPE_MODE (unsigned_short_accum_type_node)) 1100 return unsigned_p ? sat_unsigned_short_accum_type_node 1101 : unsigned_short_accum_type_node; 1102 if (mode == TYPE_MODE (unsigned_accum_type_node)) 1103 return unsigned_p ? sat_unsigned_accum_type_node 1104 : unsigned_accum_type_node; 1105 if (mode == TYPE_MODE (unsigned_long_accum_type_node)) 1106 return unsigned_p ? sat_unsigned_long_accum_type_node 1107 : unsigned_long_accum_type_node; 1108 if (mode == TYPE_MODE (unsigned_long_long_accum_type_node)) 1109 return unsigned_p ? sat_unsigned_long_long_accum_type_node 1110 : unsigned_long_long_accum_type_node; 1111 1112 if (mode == QQmode) 1113 return unsigned_p ? sat_qq_type_node : qq_type_node; 1114 if (mode == HQmode) 1115 return unsigned_p ? sat_hq_type_node : hq_type_node; 1116 if (mode == SQmode) 1117 return unsigned_p ? sat_sq_type_node : sq_type_node; 1118 if (mode == DQmode) 1119 return unsigned_p ? sat_dq_type_node : dq_type_node; 1120 if (mode == TQmode) 1121 return unsigned_p ? sat_tq_type_node : tq_type_node; 1122 1123 if (mode == UQQmode) 1124 return unsigned_p ? sat_uqq_type_node : uqq_type_node; 1125 if (mode == UHQmode) 1126 return unsigned_p ? sat_uhq_type_node : uhq_type_node; 1127 if (mode == USQmode) 1128 return unsigned_p ? sat_usq_type_node : usq_type_node; 1129 if (mode == UDQmode) 1130 return unsigned_p ? sat_udq_type_node : udq_type_node; 1131 if (mode == UTQmode) 1132 return unsigned_p ? sat_utq_type_node : utq_type_node; 1133 1134 if (mode == HAmode) 1135 return unsigned_p ? sat_ha_type_node : ha_type_node; 1136 if (mode == SAmode) 1137 return unsigned_p ? sat_sa_type_node : sa_type_node; 1138 if (mode == DAmode) 1139 return unsigned_p ? sat_da_type_node : da_type_node; 1140 if (mode == TAmode) 1141 return unsigned_p ? sat_ta_type_node : ta_type_node; 1142 1143 if (mode == UHAmode) 1144 return unsigned_p ? sat_uha_type_node : uha_type_node; 1145 if (mode == USAmode) 1146 return unsigned_p ? sat_usa_type_node : usa_type_node; 1147 if (mode == UDAmode) 1148 return unsigned_p ? sat_uda_type_node : uda_type_node; 1149 if (mode == UTAmode) 1150 return unsigned_p ? sat_uta_type_node : uta_type_node; 1151 } 1152 1153 for (t = registered_builtin_types; t; t = TREE_CHAIN (t)) 1154 if (TYPE_MODE (TREE_VALUE (t)) == mode) 1155 return TREE_VALUE (t); 1156 1157 return NULL_TREE; 1158 } 1159 1160 /* Return true if we are in the global binding level. */ 1161 1162 static bool 1163 lto_global_bindings_p (void) 1164 { 1165 return cfun == NULL; 1166 } 1167 1168 static void 1169 lto_set_decl_assembler_name (tree decl) 1170 { 1171 /* This is almost the same as lhd_set_decl_assembler_name, except that 1172 we need to uniquify file-scope names, even if they are not 1173 TREE_PUBLIC, to avoid conflicts between individual files. */ 1174 tree id; 1175 1176 if (TREE_PUBLIC (decl)) 1177 id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl)); 1178 else 1179 { 1180 const char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); 1181 char *label; 1182 1183 ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl)); 1184 id = get_identifier (label); 1185 } 1186 1187 SET_DECL_ASSEMBLER_NAME (decl, id); 1188 } 1189 1190 static tree 1191 lto_pushdecl (tree t ATTRIBUTE_UNUSED) 1192 { 1193 /* Do nothing, since we get all information from DWARF and LTO 1194 sections. */ 1195 return NULL_TREE; 1196 } 1197 1198 static tree 1199 lto_getdecls (void) 1200 { 1201 /* We have our own write_globals langhook, hence the getdecls 1202 langhook shouldn't be used, except by dbxout.c, so we can't 1203 just abort here. */ 1204 return NULL_TREE; 1205 } 1206 1207 static tree 1208 lto_builtin_function (tree decl) 1209 { 1210 return decl; 1211 } 1212 1213 static void 1214 lto_register_builtin_type (tree type, const char *name) 1215 { 1216 tree decl; 1217 1218 if (!TYPE_NAME (type)) 1219 { 1220 decl = build_decl (UNKNOWN_LOCATION, TYPE_DECL, 1221 get_identifier (name), type); 1222 DECL_ARTIFICIAL (decl) = 1; 1223 TYPE_NAME (type) = decl; 1224 } 1225 1226 registered_builtin_types = tree_cons (0, type, registered_builtin_types); 1227 } 1228 1229 /* Build nodes that would have be created by the C front-end; necessary 1230 for including builtin-types.def and ultimately builtins.def. */ 1231 1232 static void 1233 lto_build_c_type_nodes (void) 1234 { 1235 gcc_assert (void_type_node); 1236 1237 void_list_node = build_tree_list (NULL_TREE, void_type_node); 1238 string_type_node = build_pointer_type (char_type_node); 1239 const_string_type_node 1240 = build_pointer_type (build_qualified_type (char_type_node, TYPE_QUAL_CONST)); 1241 1242 if (strcmp (SIZE_TYPE, "unsigned int") == 0) 1243 { 1244 intmax_type_node = integer_type_node; 1245 uintmax_type_node = unsigned_type_node; 1246 signed_size_type_node = integer_type_node; 1247 } 1248 else if (strcmp (SIZE_TYPE, "long unsigned int") == 0) 1249 { 1250 intmax_type_node = long_integer_type_node; 1251 uintmax_type_node = long_unsigned_type_node; 1252 signed_size_type_node = long_integer_type_node; 1253 } 1254 else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0) 1255 { 1256 intmax_type_node = long_long_integer_type_node; 1257 uintmax_type_node = long_long_unsigned_type_node; 1258 signed_size_type_node = long_long_integer_type_node; 1259 } 1260 else 1261 { 1262 int i; 1263 1264 signed_size_type_node = NULL_TREE; 1265 for (i = 0; i < NUM_INT_N_ENTS; i++) 1266 if (int_n_enabled_p[i]) 1267 { 1268 char name[50]; 1269 sprintf (name, "__int%d unsigned", int_n_data[i].bitsize); 1270 1271 if (strcmp (name, SIZE_TYPE) == 0) 1272 { 1273 intmax_type_node = int_n_trees[i].signed_type; 1274 uintmax_type_node = int_n_trees[i].unsigned_type; 1275 signed_size_type_node = int_n_trees[i].signed_type; 1276 } 1277 } 1278 if (signed_size_type_node == NULL_TREE) 1279 gcc_unreachable (); 1280 } 1281 1282 wint_type_node = unsigned_type_node; 1283 pid_type_node = integer_type_node; 1284 } 1285 1286 /* Perform LTO-specific initialization. */ 1287 1288 static bool 1289 lto_init (void) 1290 { 1291 int i; 1292 1293 /* Initialize LTO-specific data structures. */ 1294 in_lto_p = true; 1295 1296 /* We need to generate LTO if running in WPA mode. */ 1297 flag_generate_lto = (flag_incremental_link == INCREMENTAL_LINK_LTO 1298 || flag_wpa != NULL); 1299 1300 /* Create the basic integer types. */ 1301 build_common_tree_nodes (flag_signed_char); 1302 1303 /* The global tree for the main identifier is filled in by 1304 language-specific front-end initialization that is not run in the 1305 LTO back-end. It appears that all languages that perform such 1306 initialization currently do so in the same way, so we do it here. */ 1307 if (main_identifier_node == NULL_TREE) 1308 main_identifier_node = get_identifier ("main"); 1309 1310 /* In the C++ front-end, fileptr_type_node is defined as a variant 1311 copy of ptr_type_node, rather than ptr_node itself. The 1312 distinction should only be relevant to the front-end, so we 1313 always use the C definition here in lto1. 1314 Likewise for const struct tm*. */ 1315 for (unsigned i = 0; 1316 i < sizeof (builtin_structptr_types) / sizeof (builtin_structptr_type); 1317 ++i) 1318 { 1319 gcc_assert (builtin_structptr_types[i].node 1320 == builtin_structptr_types[i].base); 1321 gcc_assert (TYPE_MAIN_VARIANT (builtin_structptr_types[i].node) 1322 == builtin_structptr_types[i].base); 1323 } 1324 1325 lto_build_c_type_nodes (); 1326 gcc_assert (va_list_type_node); 1327 1328 if (TREE_CODE (va_list_type_node) == ARRAY_TYPE) 1329 { 1330 tree x = build_pointer_type (TREE_TYPE (va_list_type_node)); 1331 lto_define_builtins (x, x); 1332 } 1333 else 1334 { 1335 lto_define_builtins (build_reference_type (va_list_type_node), 1336 va_list_type_node); 1337 } 1338 1339 targetm.init_builtins (); 1340 build_common_builtin_nodes (); 1341 1342 /* Assign names to the builtin types, otherwise they'll end up 1343 as __unknown__ in debug info. 1344 ??? We simply need to stop pre-seeding the streamer cache. 1345 Below is modeled after from c-common.c:c_common_nodes_and_builtins */ 1346 #define NAME_TYPE(t,n) \ 1347 if (t) \ 1348 TYPE_NAME (t) = build_decl (UNKNOWN_LOCATION, TYPE_DECL, \ 1349 get_identifier (n), t) 1350 NAME_TYPE (integer_type_node, "int"); 1351 NAME_TYPE (char_type_node, "char"); 1352 NAME_TYPE (long_integer_type_node, "long int"); 1353 NAME_TYPE (unsigned_type_node, "unsigned int"); 1354 NAME_TYPE (long_unsigned_type_node, "long unsigned int"); 1355 NAME_TYPE (long_long_integer_type_node, "long long int"); 1356 NAME_TYPE (long_long_unsigned_type_node, "long long unsigned int"); 1357 NAME_TYPE (short_integer_type_node, "short int"); 1358 NAME_TYPE (short_unsigned_type_node, "short unsigned int"); 1359 if (signed_char_type_node != char_type_node) 1360 NAME_TYPE (signed_char_type_node, "signed char"); 1361 if (unsigned_char_type_node != char_type_node) 1362 NAME_TYPE (unsigned_char_type_node, "unsigned char"); 1363 NAME_TYPE (float_type_node, "float"); 1364 NAME_TYPE (double_type_node, "double"); 1365 NAME_TYPE (long_double_type_node, "long double"); 1366 NAME_TYPE (void_type_node, "void"); 1367 NAME_TYPE (boolean_type_node, "bool"); 1368 NAME_TYPE (complex_float_type_node, "complex float"); 1369 NAME_TYPE (complex_double_type_node, "complex double"); 1370 NAME_TYPE (complex_long_double_type_node, "complex long double"); 1371 for (i = 0; i < NUM_INT_N_ENTS; i++) 1372 if (int_n_enabled_p[i]) 1373 { 1374 char name[50]; 1375 sprintf (name, "__int%d", int_n_data[i].bitsize); 1376 NAME_TYPE (int_n_trees[i].signed_type, name); 1377 } 1378 #undef NAME_TYPE 1379 1380 return true; 1381 } 1382 1383 /* Register c++-specific dumps. */ 1384 1385 void 1386 lto_register_dumps (gcc::dump_manager *dumps) 1387 { 1388 lto_link_dump_id = dumps->dump_register 1389 (".lto-link", "ipa-lto-link", "ipa-lto-link", 1390 DK_ipa, OPTGROUP_NONE, false); 1391 decl_merge_dump_id = dumps->dump_register 1392 (".lto-decl-merge", "ipa-lto-decl-merge", "ipa-lto-decl-merge", 1393 DK_ipa, OPTGROUP_NONE, false); 1394 partition_dump_id = dumps->dump_register 1395 (".lto-partition", "ipa-lto-partition", "ipa-lto-partition", 1396 DK_ipa, OPTGROUP_NONE, false); 1397 } 1398 1399 1400 /* Initialize tree structures required by the LTO front end. */ 1401 1402 static void lto_init_ts (void) 1403 { 1404 tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1; 1405 } 1406 1407 #undef LANG_HOOKS_NAME 1408 #define LANG_HOOKS_NAME "GNU GIMPLE" 1409 #undef LANG_HOOKS_OPTION_LANG_MASK 1410 #define LANG_HOOKS_OPTION_LANG_MASK lto_option_lang_mask 1411 #undef LANG_HOOKS_COMPLAIN_WRONG_LANG_P 1412 #define LANG_HOOKS_COMPLAIN_WRONG_LANG_P lto_complain_wrong_lang_p 1413 #undef LANG_HOOKS_INIT_OPTIONS_STRUCT 1414 #define LANG_HOOKS_INIT_OPTIONS_STRUCT lto_init_options_struct 1415 #undef LANG_HOOKS_REGISTER_DUMPS 1416 #define LANG_HOOKS_REGISTER_DUMPS lto_register_dumps 1417 #undef LANG_HOOKS_HANDLE_OPTION 1418 #define LANG_HOOKS_HANDLE_OPTION lto_handle_option 1419 #undef LANG_HOOKS_POST_OPTIONS 1420 #define LANG_HOOKS_POST_OPTIONS lto_post_options 1421 #undef LANG_HOOKS_GET_ALIAS_SET 1422 #define LANG_HOOKS_GET_ALIAS_SET gimple_get_alias_set 1423 #undef LANG_HOOKS_TYPE_FOR_MODE 1424 #define LANG_HOOKS_TYPE_FOR_MODE lto_type_for_mode 1425 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME 1426 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lto_set_decl_assembler_name 1427 #undef LANG_HOOKS_GLOBAL_BINDINGS_P 1428 #define LANG_HOOKS_GLOBAL_BINDINGS_P lto_global_bindings_p 1429 #undef LANG_HOOKS_PUSHDECL 1430 #define LANG_HOOKS_PUSHDECL lto_pushdecl 1431 #undef LANG_HOOKS_GETDECLS 1432 #define LANG_HOOKS_GETDECLS lto_getdecls 1433 #undef LANG_HOOKS_REGISTER_BUILTIN_TYPE 1434 #define LANG_HOOKS_REGISTER_BUILTIN_TYPE lto_register_builtin_type 1435 #undef LANG_HOOKS_BUILTIN_FUNCTION 1436 #define LANG_HOOKS_BUILTIN_FUNCTION lto_builtin_function 1437 #undef LANG_HOOKS_INIT 1438 #define LANG_HOOKS_INIT lto_init 1439 #undef LANG_HOOKS_PARSE_FILE 1440 #define LANG_HOOKS_PARSE_FILE lto_main 1441 #undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS 1442 #define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true 1443 #undef LANG_HOOKS_TYPES_COMPATIBLE_P 1444 #define LANG_HOOKS_TYPES_COMPATIBLE_P NULL 1445 #undef LANG_HOOKS_EH_PERSONALITY 1446 #define LANG_HOOKS_EH_PERSONALITY lto_eh_personality 1447 1448 /* Attribute hooks. */ 1449 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE 1450 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE lto_attribute_table 1451 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE 1452 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE lto_format_attribute_table 1453 1454 #undef LANG_HOOKS_BEGIN_SECTION 1455 #define LANG_HOOKS_BEGIN_SECTION lto_obj_begin_section 1456 #undef LANG_HOOKS_APPEND_DATA 1457 #define LANG_HOOKS_APPEND_DATA lto_obj_append_data 1458 #undef LANG_HOOKS_END_SECTION 1459 #define LANG_HOOKS_END_SECTION lto_obj_end_section 1460 1461 #undef LANG_HOOKS_INIT_TS 1462 #define LANG_HOOKS_INIT_TS lto_init_ts 1463 1464 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER; 1465 1466 /* Language hooks that are not part of lang_hooks. */ 1467 1468 tree 1469 convert (tree type ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED) 1470 { 1471 gcc_unreachable (); 1472 } 1473 1474 /* Tree walking support. */ 1475 1476 static enum lto_tree_node_structure_enum 1477 lto_tree_node_structure (union lang_tree_node *t ATTRIBUTE_UNUSED) 1478 { 1479 return TS_LTO_GENERIC; 1480 } 1481 1482 #include "gtype-lto.h" 1483 #include "gt-lto-lto-lang.h" 1484