1 /* Language-dependent hooks for LTO. 2 Copyright (C) 2009-2020 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 "lto-common.h" 38 #include "stringpool.h" 39 #include "attribs.h" 40 41 /* LTO specific dumps. */ 42 int lto_link_dump_id, decl_merge_dump_id, partition_dump_id; 43 44 static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *); 45 static tree handle_leaf_attribute (tree *, tree, tree, int, bool *); 46 static tree handle_const_attribute (tree *, tree, tree, int, bool *); 47 static tree handle_malloc_attribute (tree *, tree, tree, int, bool *); 48 static tree handle_pure_attribute (tree *, tree, tree, int, bool *); 49 static tree handle_novops_attribute (tree *, tree, tree, int, bool *); 50 static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *); 51 static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *); 52 static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *); 53 static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *); 54 static tree handle_transaction_pure_attribute (tree *, tree, tree, int, bool *); 55 static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *); 56 static tree handle_patchable_function_entry_attribute (tree *, tree, tree, 57 int, bool *); 58 static tree ignore_attribute (tree *, tree, tree, int, bool *); 59 60 static tree handle_format_attribute (tree *, tree, tree, int, bool *); 61 static tree handle_fnspec_attribute (tree *, tree, tree, int, bool *); 62 static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); 63 64 /* Helper to define attribute exclusions. */ 65 #define ATTR_EXCL(name, function, type, variable) \ 66 { name, function, type, variable } 67 68 /* Define attributes that are mutually exclusive with one another. */ 69 static const struct attribute_spec::exclusions attr_noreturn_exclusions[] = 70 { 71 ATTR_EXCL ("noreturn", true, true, true), 72 ATTR_EXCL ("alloc_align", true, true, true), 73 ATTR_EXCL ("alloc_size", true, true, true), 74 ATTR_EXCL ("const", true, true, true), 75 ATTR_EXCL ("malloc", true, true, true), 76 ATTR_EXCL ("pure", true, true, true), 77 ATTR_EXCL ("returns_twice", true, true, true), 78 ATTR_EXCL ("warn_unused_result", true, true, true), 79 ATTR_EXCL (NULL, false, false, false), 80 }; 81 82 static const struct attribute_spec::exclusions attr_returns_twice_exclusions[] = 83 { 84 ATTR_EXCL ("noreturn", true, true, true), 85 ATTR_EXCL (NULL, false, false, false), 86 }; 87 88 static const struct attribute_spec::exclusions attr_const_pure_exclusions[] = 89 { 90 ATTR_EXCL ("const", true, true, true), 91 ATTR_EXCL ("noreturn", true, true, true), 92 ATTR_EXCL ("pure", true, true, true), 93 ATTR_EXCL (NULL, false, false, false) 94 }; 95 96 /* Table of machine-independent attributes supported in GIMPLE. */ 97 const struct attribute_spec lto_attribute_table[] = 98 { 99 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, 100 affects_type_identity, handler, exclude } */ 101 { "noreturn", 0, 0, true, false, false, false, 102 handle_noreturn_attribute, 103 attr_noreturn_exclusions }, 104 { "leaf", 0, 0, true, false, false, false, 105 handle_leaf_attribute, NULL }, 106 /* The same comments as for noreturn attributes apply to const ones. */ 107 { "const", 0, 0, true, false, false, false, 108 handle_const_attribute, 109 attr_const_pure_exclusions }, 110 { "malloc", 0, 0, true, false, false, false, 111 handle_malloc_attribute, NULL }, 112 { "pure", 0, 0, true, false, false, false, 113 handle_pure_attribute, 114 attr_const_pure_exclusions }, 115 { "no vops", 0, 0, true, false, false, false, 116 handle_novops_attribute, NULL }, 117 { "nonnull", 0, -1, false, true, true, false, 118 handle_nonnull_attribute, NULL }, 119 { "nothrow", 0, 0, true, false, false, false, 120 handle_nothrow_attribute, NULL }, 121 { "patchable_function_entry", 1, 2, true, false, false, false, 122 handle_patchable_function_entry_attribute, 123 NULL }, 124 { "returns_twice", 0, 0, true, false, false, false, 125 handle_returns_twice_attribute, 126 attr_returns_twice_exclusions }, 127 { "sentinel", 0, 1, false, true, true, false, 128 handle_sentinel_attribute, NULL }, 129 { "type generic", 0, 0, false, true, true, false, 130 handle_type_generic_attribute, NULL }, 131 { "fn spec", 1, 1, false, true, true, false, 132 handle_fnspec_attribute, NULL }, 133 { "transaction_pure", 0, 0, false, true, true, false, 134 handle_transaction_pure_attribute, NULL }, 135 /* For internal use only. The leading '*' both prevents its usage in 136 source code and signals that it may be overridden by machine tables. */ 137 { "*tm regparm", 0, 0, false, true, true, false, 138 ignore_attribute, NULL }, 139 { NULL, 0, 0, false, false, false, false, NULL, NULL } 140 }; 141 142 /* Give the specifications for the format attributes, used by C and all 143 descendants. */ 144 145 const struct attribute_spec lto_format_attribute_table[] = 146 { 147 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, 148 affects_type_identity, handler, exclude } */ 149 { "format", 3, 3, false, true, true, false, 150 handle_format_attribute, NULL }, 151 { "format_arg", 1, 1, false, true, true, false, 152 handle_format_arg_attribute, NULL }, 153 { NULL, 0, 0, false, false, false, false, NULL, NULL } 154 }; 155 156 enum built_in_attribute 157 { 158 #define DEF_ATTR_NULL_TREE(ENUM) ENUM, 159 #define DEF_ATTR_INT(ENUM, VALUE) ENUM, 160 #define DEF_ATTR_STRING(ENUM, VALUE) ENUM, 161 #define DEF_ATTR_IDENT(ENUM, STRING) ENUM, 162 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM, 163 #include "builtin-attrs.def" 164 #undef DEF_ATTR_NULL_TREE 165 #undef DEF_ATTR_INT 166 #undef DEF_ATTR_STRING 167 #undef DEF_ATTR_IDENT 168 #undef DEF_ATTR_TREE_LIST 169 ATTR_LAST 170 }; 171 172 static GTY(()) tree built_in_attributes[(int) ATTR_LAST]; 173 174 /* Builtin types. */ 175 176 enum lto_builtin_type 177 { 178 #define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME, 179 #define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME, 180 #define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME, 181 #define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME, 182 #define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME, 183 #define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME, 184 #define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME, 185 #define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 186 ARG6) NAME, 187 #define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 188 ARG6, ARG7) NAME, 189 #define DEF_FUNCTION_TYPE_8(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 190 ARG6, ARG7, ARG8) NAME, 191 #define DEF_FUNCTION_TYPE_9(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 192 ARG6, ARG7, ARG8, ARG9) NAME, 193 #define DEF_FUNCTION_TYPE_10(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 194 ARG6, ARG7, ARG8, ARG9, ARG10) NAME, 195 #define DEF_FUNCTION_TYPE_11(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 196 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) NAME, 197 #define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME, 198 #define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME, 199 #define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME, 200 #define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME, 201 #define DEF_FUNCTION_TYPE_VAR_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME, 202 #define DEF_FUNCTION_TYPE_VAR_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG6) \ 203 NAME, 204 #define DEF_FUNCTION_TYPE_VAR_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 205 ARG6) NAME, 206 #define DEF_FUNCTION_TYPE_VAR_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 207 ARG6, ARG7) NAME, 208 #define DEF_POINTER_TYPE(NAME, TYPE) NAME, 209 #include "builtin-types.def" 210 #undef DEF_PRIMITIVE_TYPE 211 #undef DEF_FUNCTION_TYPE_0 212 #undef DEF_FUNCTION_TYPE_1 213 #undef DEF_FUNCTION_TYPE_2 214 #undef DEF_FUNCTION_TYPE_3 215 #undef DEF_FUNCTION_TYPE_4 216 #undef DEF_FUNCTION_TYPE_5 217 #undef DEF_FUNCTION_TYPE_6 218 #undef DEF_FUNCTION_TYPE_7 219 #undef DEF_FUNCTION_TYPE_8 220 #undef DEF_FUNCTION_TYPE_9 221 #undef DEF_FUNCTION_TYPE_10 222 #undef DEF_FUNCTION_TYPE_11 223 #undef DEF_FUNCTION_TYPE_VAR_0 224 #undef DEF_FUNCTION_TYPE_VAR_1 225 #undef DEF_FUNCTION_TYPE_VAR_2 226 #undef DEF_FUNCTION_TYPE_VAR_3 227 #undef DEF_FUNCTION_TYPE_VAR_4 228 #undef DEF_FUNCTION_TYPE_VAR_5 229 #undef DEF_FUNCTION_TYPE_VAR_6 230 #undef DEF_FUNCTION_TYPE_VAR_7 231 #undef DEF_POINTER_TYPE 232 BT_LAST 233 }; 234 235 typedef enum lto_builtin_type builtin_type; 236 237 static GTY(()) tree builtin_types[(int) BT_LAST + 1]; 238 239 static GTY(()) tree string_type_node; 240 static GTY(()) tree const_string_type_node; 241 static GTY(()) tree wint_type_node; 242 static GTY(()) tree intmax_type_node; 243 static GTY(()) tree uintmax_type_node; 244 static GTY(()) tree signed_size_type_node; 245 246 /* Flags needed to process builtins.def. */ 247 int flag_isoc94; 248 int flag_isoc99; 249 int flag_isoc11; 250 int flag_isoc2x; 251 252 /* Attribute handlers. */ 253 254 /* Handle a "noreturn" attribute; arguments as in 255 struct attribute_spec.handler. */ 256 257 static tree 258 handle_noreturn_attribute (tree *node, tree ARG_UNUSED (name), 259 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 260 bool * ARG_UNUSED (no_add_attrs)) 261 { 262 tree type = TREE_TYPE (*node); 263 264 if (TREE_CODE (*node) == FUNCTION_DECL) 265 TREE_THIS_VOLATILE (*node) = 1; 266 else if (TREE_CODE (type) == POINTER_TYPE 267 && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) 268 TREE_TYPE (*node) 269 = build_pointer_type 270 (build_type_variant (TREE_TYPE (type), 271 TYPE_READONLY (TREE_TYPE (type)), 1)); 272 else 273 gcc_unreachable (); 274 275 return NULL_TREE; 276 } 277 278 /* Handle a "leaf" attribute; arguments as in 279 struct attribute_spec.handler. */ 280 281 static tree 282 handle_leaf_attribute (tree *node, tree name, 283 tree ARG_UNUSED (args), 284 int ARG_UNUSED (flags), bool *no_add_attrs) 285 { 286 if (TREE_CODE (*node) != FUNCTION_DECL) 287 { 288 warning (OPT_Wattributes, "%qE attribute ignored", name); 289 *no_add_attrs = true; 290 } 291 if (!TREE_PUBLIC (*node)) 292 { 293 warning (OPT_Wattributes, "%qE attribute has no effect on unit local functions", name); 294 *no_add_attrs = true; 295 } 296 297 return NULL_TREE; 298 } 299 300 /* Handle a "const" attribute; arguments as in 301 struct attribute_spec.handler. */ 302 303 static tree 304 handle_const_attribute (tree *node, tree ARG_UNUSED (name), 305 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 306 bool * ARG_UNUSED (no_add_attrs)) 307 { 308 if (TREE_CODE (*node) != FUNCTION_DECL 309 || !fndecl_built_in_p (*node)) 310 inform (UNKNOWN_LOCATION, "%s:%s: %E: %E", __FILE__, __func__, *node, name); 311 312 tree type = TREE_TYPE (*node); 313 314 /* See FIXME comment on noreturn in c_common_attribute_table. */ 315 if (TREE_CODE (*node) == FUNCTION_DECL) 316 TREE_READONLY (*node) = 1; 317 else if (TREE_CODE (type) == POINTER_TYPE 318 && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) 319 TREE_TYPE (*node) 320 = build_pointer_type 321 (build_type_variant (TREE_TYPE (type), 1, 322 TREE_THIS_VOLATILE (TREE_TYPE (type)))); 323 else 324 gcc_unreachable (); 325 326 return NULL_TREE; 327 } 328 329 330 /* Handle a "malloc" attribute; arguments as in 331 struct attribute_spec.handler. */ 332 333 static tree 334 handle_malloc_attribute (tree *node, tree ARG_UNUSED (name), 335 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 336 bool * ARG_UNUSED (no_add_attrs)) 337 { 338 if (TREE_CODE (*node) == FUNCTION_DECL 339 && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (*node)))) 340 DECL_IS_MALLOC (*node) = 1; 341 else 342 gcc_unreachable (); 343 344 return NULL_TREE; 345 } 346 347 348 /* Handle a "pure" attribute; arguments as in 349 struct attribute_spec.handler. */ 350 351 static tree 352 handle_pure_attribute (tree *node, tree ARG_UNUSED (name), 353 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 354 bool * ARG_UNUSED (no_add_attrs)) 355 { 356 if (TREE_CODE (*node) == FUNCTION_DECL) 357 DECL_PURE_P (*node) = 1; 358 else 359 gcc_unreachable (); 360 361 return NULL_TREE; 362 } 363 364 365 /* Handle a "no vops" attribute; arguments as in 366 struct attribute_spec.handler. */ 367 368 static tree 369 handle_novops_attribute (tree *node, tree ARG_UNUSED (name), 370 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 371 bool *ARG_UNUSED (no_add_attrs)) 372 { 373 gcc_assert (TREE_CODE (*node) == FUNCTION_DECL); 374 DECL_IS_NOVOPS (*node) = 1; 375 return NULL_TREE; 376 } 377 378 379 /* Helper for nonnull attribute handling; fetch the operand number 380 from the attribute argument list. */ 381 382 static bool 383 get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp) 384 { 385 /* Verify the arg number is a constant. */ 386 if (!tree_fits_uhwi_p (arg_num_expr)) 387 return false; 388 389 *valp = TREE_INT_CST_LOW (arg_num_expr); 390 return true; 391 } 392 393 /* Handle the "nonnull" attribute. */ 394 395 static tree 396 handle_nonnull_attribute (tree *node, tree ARG_UNUSED (name), 397 tree args, int ARG_UNUSED (flags), 398 bool * ARG_UNUSED (no_add_attrs)) 399 { 400 tree type = *node; 401 402 /* If no arguments are specified, all pointer arguments should be 403 non-null. Verify a full prototype is given so that the arguments 404 will have the correct types when we actually check them later. 405 Avoid diagnosing type-generic built-ins since those have no 406 prototype. */ 407 if (!args) 408 { 409 gcc_assert (prototype_p (type) 410 || !TYPE_ATTRIBUTES (type) 411 || lookup_attribute ("type generic", TYPE_ATTRIBUTES (type))); 412 413 return NULL_TREE; 414 } 415 416 /* Argument list specified. Verify that each argument number references 417 a pointer argument. */ 418 for (; args; args = TREE_CHAIN (args)) 419 { 420 tree argument; 421 unsigned HOST_WIDE_INT arg_num = 0, ck_num; 422 423 if (!get_nonnull_operand (TREE_VALUE (args), &arg_num)) 424 gcc_unreachable (); 425 426 argument = TYPE_ARG_TYPES (type); 427 if (argument) 428 { 429 for (ck_num = 1; ; ck_num++) 430 { 431 if (!argument || ck_num == arg_num) 432 break; 433 argument = TREE_CHAIN (argument); 434 } 435 436 gcc_assert (argument 437 && TREE_CODE (TREE_VALUE (argument)) == POINTER_TYPE); 438 } 439 } 440 441 return NULL_TREE; 442 } 443 444 445 /* Handle a "nothrow" attribute; arguments as in 446 struct attribute_spec.handler. */ 447 448 static tree 449 handle_nothrow_attribute (tree *node, tree ARG_UNUSED (name), 450 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 451 bool * ARG_UNUSED (no_add_attrs)) 452 { 453 if (TREE_CODE (*node) == FUNCTION_DECL) 454 TREE_NOTHROW (*node) = 1; 455 else 456 gcc_unreachable (); 457 458 return NULL_TREE; 459 } 460 461 462 /* Handle a "sentinel" attribute. */ 463 464 static tree 465 handle_sentinel_attribute (tree *node, tree ARG_UNUSED (name), tree args, 466 int ARG_UNUSED (flags), 467 bool * ARG_UNUSED (no_add_attrs)) 468 { 469 gcc_assert (stdarg_p (*node)); 470 471 if (args) 472 { 473 tree position = TREE_VALUE (args); 474 gcc_assert (TREE_CODE (position) == INTEGER_CST); 475 if (tree_int_cst_lt (position, integer_zero_node)) 476 gcc_unreachable (); 477 } 478 479 return NULL_TREE; 480 } 481 482 /* Handle a "type_generic" attribute. */ 483 484 static tree 485 handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name), 486 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 487 bool * ARG_UNUSED (no_add_attrs)) 488 { 489 /* Ensure we have a function type. */ 490 gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE); 491 492 /* Ensure we have a variadic function. */ 493 gcc_assert (!prototype_p (*node) || stdarg_p (*node)); 494 495 return NULL_TREE; 496 } 497 498 /* Handle a "transaction_pure" attribute. */ 499 500 static tree 501 handle_transaction_pure_attribute (tree *node, tree ARG_UNUSED (name), 502 tree ARG_UNUSED (args), 503 int ARG_UNUSED (flags), 504 bool * ARG_UNUSED (no_add_attrs)) 505 { 506 /* Ensure we have a function type. */ 507 gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE); 508 509 return NULL_TREE; 510 } 511 512 /* Handle a "returns_twice" attribute. */ 513 514 static tree 515 handle_returns_twice_attribute (tree *node, tree ARG_UNUSED (name), 516 tree ARG_UNUSED (args), 517 int ARG_UNUSED (flags), 518 bool * ARG_UNUSED (no_add_attrs)) 519 { 520 gcc_assert (TREE_CODE (*node) == FUNCTION_DECL); 521 522 DECL_IS_RETURNS_TWICE (*node) = 1; 523 524 return NULL_TREE; 525 } 526 527 static tree 528 handle_patchable_function_entry_attribute (tree *, tree, tree, int, bool *) 529 { 530 /* Nothing to be done here. */ 531 return NULL_TREE; 532 } 533 534 /* Ignore the given attribute. Used when this attribute may be usefully 535 overridden by the target, but is not used generically. */ 536 537 static tree 538 ignore_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), 539 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 540 bool *no_add_attrs) 541 { 542 *no_add_attrs = true; 543 return NULL_TREE; 544 } 545 546 /* Handle a "format" attribute; arguments as in 547 struct attribute_spec.handler. */ 548 549 static tree 550 handle_format_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), 551 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 552 bool *no_add_attrs) 553 { 554 *no_add_attrs = true; 555 return NULL_TREE; 556 } 557 558 559 /* Handle a "format_arg" attribute; arguments as in 560 struct attribute_spec.handler. */ 561 562 tree 563 handle_format_arg_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), 564 tree ARG_UNUSED (args), int ARG_UNUSED (flags), 565 bool *no_add_attrs) 566 { 567 *no_add_attrs = true; 568 return NULL_TREE; 569 } 570 571 572 /* Handle a "fn spec" attribute; arguments as in 573 struct attribute_spec.handler. */ 574 575 static tree 576 handle_fnspec_attribute (tree *node ATTRIBUTE_UNUSED, tree ARG_UNUSED (name), 577 tree args, int ARG_UNUSED (flags), 578 bool *no_add_attrs ATTRIBUTE_UNUSED) 579 { 580 gcc_assert (args 581 && TREE_CODE (TREE_VALUE (args)) == STRING_CST 582 && !TREE_CHAIN (args)); 583 return NULL_TREE; 584 } 585 586 /* Cribbed from c-common.c. */ 587 588 static void 589 def_fn_type (builtin_type def, builtin_type ret, bool var, int n, ...) 590 { 591 tree t; 592 tree *args = XALLOCAVEC (tree, n); 593 va_list list; 594 int i; 595 bool err = false; 596 597 va_start (list, n); 598 for (i = 0; i < n; ++i) 599 { 600 builtin_type a = (builtin_type) va_arg (list, int); 601 t = builtin_types[a]; 602 if (t == error_mark_node) 603 err = true; 604 args[i] = t; 605 } 606 va_end (list); 607 608 t = builtin_types[ret]; 609 if (err) 610 t = error_mark_node; 611 if (t == error_mark_node) 612 ; 613 else if (var) 614 t = build_varargs_function_type_array (t, n, args); 615 else 616 t = build_function_type_array (t, n, args); 617 618 builtin_types[def] = t; 619 } 620 621 /* Used to help initialize the builtin-types.def table. When a type of 622 the correct size doesn't exist, use error_mark_node instead of NULL. 623 The later results in segfaults even when a decl using the type doesn't 624 get invoked. */ 625 626 static tree 627 builtin_type_for_size (int size, bool unsignedp) 628 { 629 tree type = lang_hooks.types.type_for_size (size, unsignedp); 630 return type ? type : error_mark_node; 631 } 632 633 /* Support for DEF_BUILTIN. */ 634 635 static void 636 def_builtin_1 (enum built_in_function fncode, const char *name, 637 enum built_in_class fnclass, tree fntype, tree libtype, 638 bool both_p, bool fallback_p, bool nonansi_p, 639 tree fnattrs, bool implicit_p) 640 { 641 tree decl; 642 const char *libname; 643 644 if (fntype == error_mark_node) 645 return; 646 647 libname = name + strlen ("__builtin_"); 648 decl = add_builtin_function (name, fntype, fncode, fnclass, 649 (fallback_p ? libname : NULL), 650 fnattrs); 651 652 if (both_p 653 && !flag_no_builtin 654 && !(nonansi_p && flag_no_nonansi_builtin)) 655 add_builtin_function (libname, libtype, fncode, fnclass, 656 NULL, fnattrs); 657 658 set_builtin_decl (fncode, decl, implicit_p); 659 } 660 661 662 /* Initialize the attribute table for all the supported builtins. */ 663 664 static void 665 lto_init_attributes (void) 666 { 667 /* Fill in the built_in_attributes array. */ 668 #define DEF_ATTR_NULL_TREE(ENUM) \ 669 built_in_attributes[(int) ENUM] = NULL_TREE; 670 #define DEF_ATTR_INT(ENUM, VALUE) \ 671 built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE); 672 #define DEF_ATTR_STRING(ENUM, VALUE) \ 673 built_in_attributes[(int) ENUM] = build_string (strlen (VALUE), VALUE); 674 #define DEF_ATTR_IDENT(ENUM, STRING) \ 675 built_in_attributes[(int) ENUM] = get_identifier (STRING); 676 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \ 677 built_in_attributes[(int) ENUM] \ 678 = tree_cons (built_in_attributes[(int) PURPOSE], \ 679 built_in_attributes[(int) VALUE], \ 680 built_in_attributes[(int) CHAIN]); 681 #include "builtin-attrs.def" 682 #undef DEF_ATTR_NULL_TREE 683 #undef DEF_ATTR_INT 684 #undef DEF_ATTR_STRING 685 #undef DEF_ATTR_IDENT 686 #undef DEF_ATTR_TREE_LIST 687 } 688 689 /* Create builtin types and functions. VA_LIST_REF_TYPE_NODE and 690 VA_LIST_ARG_TYPE_NODE are used in builtin-types.def. */ 691 692 static void 693 lto_define_builtins (tree va_list_ref_type_node ATTRIBUTE_UNUSED, 694 tree va_list_arg_type_node ATTRIBUTE_UNUSED) 695 { 696 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \ 697 builtin_types[ENUM] = VALUE; 698 #define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \ 699 def_fn_type (ENUM, RETURN, 0, 0); 700 #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \ 701 def_fn_type (ENUM, RETURN, 0, 1, ARG1); 702 #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \ 703 def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2); 704 #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \ 705 def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3); 706 #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \ 707 def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4); 708 #define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \ 709 def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5); 710 #define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 711 ARG6) \ 712 def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6); 713 #define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 714 ARG6, ARG7) \ 715 def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7); 716 #define DEF_FUNCTION_TYPE_8(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 717 ARG6, ARG7, ARG8) \ 718 def_fn_type (ENUM, RETURN, 0, 8, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 719 ARG7, ARG8); 720 #define DEF_FUNCTION_TYPE_9(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 721 ARG6, ARG7, ARG8, ARG9) \ 722 def_fn_type (ENUM, RETURN, 0, 9, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 723 ARG7, ARG8, ARG9); 724 #define DEF_FUNCTION_TYPE_10(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 725 ARG6, ARG7, ARG8, ARG9, ARG10) \ 726 def_fn_type (ENUM, RETURN, 0, 10, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 727 ARG7, ARG8, ARG9, ARG10); 728 #define DEF_FUNCTION_TYPE_11(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 729 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) \ 730 def_fn_type (ENUM, RETURN, 0, 11, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \ 731 ARG7, ARG8, ARG9, ARG10, ARG11); 732 #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \ 733 def_fn_type (ENUM, RETURN, 1, 0); 734 #define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \ 735 def_fn_type (ENUM, RETURN, 1, 1, ARG1); 736 #define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \ 737 def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2); 738 #define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \ 739 def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3); 740 #define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \ 741 def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4); 742 #define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \ 743 def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5); 744 #define DEF_FUNCTION_TYPE_VAR_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 745 ARG6) \ 746 def_fn_type (ENUM, RETURN, 1, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6); 747 #define DEF_FUNCTION_TYPE_VAR_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \ 748 ARG6, ARG7) \ 749 def_fn_type (ENUM, RETURN, 1, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7); 750 #define DEF_POINTER_TYPE(ENUM, TYPE) \ 751 builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]); 752 753 #include "builtin-types.def" 754 755 #undef DEF_PRIMITIVE_TYPE 756 #undef DEF_FUNCTION_TYPE_0 757 #undef DEF_FUNCTION_TYPE_1 758 #undef DEF_FUNCTION_TYPE_2 759 #undef DEF_FUNCTION_TYPE_3 760 #undef DEF_FUNCTION_TYPE_4 761 #undef DEF_FUNCTION_TYPE_5 762 #undef DEF_FUNCTION_TYPE_6 763 #undef DEF_FUNCTION_TYPE_7 764 #undef DEF_FUNCTION_TYPE_8 765 #undef DEF_FUNCTION_TYPE_9 766 #undef DEF_FUNCTION_TYPE_10 767 #undef DEF_FUNCTION_TYPE_11 768 #undef DEF_FUNCTION_TYPE_VAR_0 769 #undef DEF_FUNCTION_TYPE_VAR_1 770 #undef DEF_FUNCTION_TYPE_VAR_2 771 #undef DEF_FUNCTION_TYPE_VAR_3 772 #undef DEF_FUNCTION_TYPE_VAR_4 773 #undef DEF_FUNCTION_TYPE_VAR_5 774 #undef DEF_FUNCTION_TYPE_VAR_6 775 #undef DEF_FUNCTION_TYPE_VAR_7 776 #undef DEF_POINTER_TYPE 777 builtin_types[(int) BT_LAST] = NULL_TREE; 778 779 lto_init_attributes (); 780 781 #define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P,\ 782 NONANSI_P, ATTRS, IMPLICIT, COND) \ 783 if (NAME && COND) \ 784 def_builtin_1 (ENUM, NAME, CLASS, builtin_types[(int) TYPE], \ 785 builtin_types[(int) LIBTYPE], BOTH_P, FALLBACK_P, \ 786 NONANSI_P, built_in_attributes[(int) ATTRS], IMPLICIT); 787 #include "builtins.def" 788 } 789 790 static GTY(()) tree registered_builtin_types; 791 792 /* Language hooks. */ 793 794 static bool 795 lto_complain_wrong_lang_p (const struct cl_option *option ATTRIBUTE_UNUSED) 796 { 797 /* The LTO front end inherits all the options from the first front 798 end that was used. However, not all the original front end 799 options make sense in LTO. 800 801 A real solution would be to filter this in collect2, but collect2 802 does not have access to all the option attributes to know what to 803 filter. So, in lto1 we silently accept inherited flags and do 804 nothing about it. */ 805 return false; 806 } 807 808 static void 809 lto_init_options_struct (struct gcc_options *opts) 810 { 811 /* By default, C99-like requirements for complex multiply and divide. 812 ??? Until the complex method is encoded in the IL this is the only 813 safe choice. This will pessimize Fortran code with LTO unless 814 people specify a complex method manually or use -ffast-math. */ 815 opts->x_flag_complex_method = 2; 816 } 817 818 /* Handle command-line option SCODE. If the option takes an argument, it is 819 stored in ARG, which is otherwise NULL. VALUE holds either a numerical 820 argument or a binary value indicating whether the positive or negative form 821 of the option was supplied. */ 822 823 const char *resolution_file_name; 824 static bool 825 lto_handle_option (size_t scode, const char *arg, 826 HOST_WIDE_INT value ATTRIBUTE_UNUSED, 827 int kind ATTRIBUTE_UNUSED, 828 location_t loc ATTRIBUTE_UNUSED, 829 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED) 830 { 831 enum opt_code code = (enum opt_code) scode; 832 bool result = true; 833 834 switch (code) 835 { 836 case OPT_fresolution_: 837 resolution_file_name = arg; 838 break; 839 840 case OPT_Wabi: 841 warn_psabi = value; 842 break; 843 844 case OPT_fwpa: 845 flag_wpa = value ? "" : NULL; 846 break; 847 848 default: 849 break; 850 } 851 852 return result; 853 } 854 855 /* Perform post-option processing. Does additional initialization based on 856 command-line options. PFILENAME is the main input filename. Returns false 857 to enable subsequent back-end initialization. */ 858 859 static bool 860 lto_post_options (const char **pfilename ATTRIBUTE_UNUSED) 861 { 862 /* -fltrans and -fwpa are mutually exclusive. Check for that here. */ 863 if (flag_wpa && flag_ltrans) 864 error ("%<-fwpa%> and %<-fltrans%> are mutually exclusive"); 865 866 if (flag_ltrans) 867 { 868 flag_generate_lto = 0; 869 870 /* During LTRANS, we are not looking at the whole program, only 871 a subset of the whole callgraph. */ 872 flag_whole_program = 0; 873 } 874 875 if (flag_wpa) 876 flag_generate_lto = 1; 877 878 /* Initialize the codegen flags according to the output type. */ 879 switch (flag_lto_linker_output) 880 { 881 case LTO_LINKER_OUTPUT_REL: /* .o: incremental link producing LTO IL */ 882 /* Configure compiler same way as normal frontend would do with -flto: 883 this way we read the trees (declarations & types), symbol table, 884 optimization summaries and link them. Subsequently we output new LTO 885 file. */ 886 flag_lto = ""; 887 flag_incremental_link = INCREMENTAL_LINK_LTO; 888 flag_whole_program = 0; 889 flag_wpa = 0; 890 flag_generate_lto = 1; 891 /* It would be cool to produce .o file directly, but our current 892 simple objects does not contain the lto symbol markers. Go the slow 893 way through the asm file. */ 894 lang_hooks.lto.begin_section = lhd_begin_section; 895 lang_hooks.lto.append_data = lhd_append_data; 896 lang_hooks.lto.end_section = lhd_end_section; 897 if (flag_ltrans) 898 error ("%<-flinker-output=rel%> and %<-fltrans%> are mutually " 899 "exclussive"); 900 break; 901 902 case LTO_LINKER_OUTPUT_NOLTOREL: /* .o: incremental link producing asm */ 903 flag_whole_program = 0; 904 flag_incremental_link = INCREMENTAL_LINK_NOLTO; 905 break; 906 907 case LTO_LINKER_OUTPUT_DYN: /* .so: PID library */ 908 /* On some targets, like i386 it makes sense to build PIC library wihout 909 -fpic for performance reasons. So no need to adjust flags. */ 910 break; 911 912 case LTO_LINKER_OUTPUT_PIE: /* PIE binary */ 913 /* If -fPIC or -fPIE was used at compile time, be sure that 914 flag_pie is 2. */ 915 flag_pie = MAX (flag_pie, flag_pic); 916 flag_pic = flag_pie; 917 flag_shlib = 0; 918 break; 919 920 case LTO_LINKER_OUTPUT_EXEC: /* Normal executable */ 921 flag_pic = 0; 922 flag_pie = 0; 923 flag_shlib = 0; 924 break; 925 926 case LTO_LINKER_OUTPUT_UNKNOWN: 927 break; 928 } 929 930 /* Excess precision other than "fast" requires front-end 931 support. */ 932 if (flag_excess_precision == EXCESS_PRECISION_DEFAULT) 933 flag_excess_precision = EXCESS_PRECISION_FAST; 934 935 /* When partitioning, we can tear appart STRING_CSTs uses from the same 936 TU into multiple partitions. Without constant merging the constants 937 might not be equal at runtime. See PR50199. */ 938 if (!flag_merge_constants) 939 flag_merge_constants = 1; 940 941 /* Initialize the compiler back end. */ 942 return false; 943 } 944 945 /* Return a data type that has machine mode MODE. 946 If the mode is an integer, 947 then UNSIGNEDP selects between signed and unsigned types. 948 If the mode is a fixed-point mode, 949 then UNSIGNEDP selects between saturating and nonsaturating types. */ 950 951 static tree 952 lto_type_for_mode (machine_mode mode, int unsigned_p) 953 { 954 tree t; 955 int i; 956 957 if (mode == TYPE_MODE (integer_type_node)) 958 return unsigned_p ? unsigned_type_node : integer_type_node; 959 960 if (mode == TYPE_MODE (signed_char_type_node)) 961 return unsigned_p ? unsigned_char_type_node : signed_char_type_node; 962 963 if (mode == TYPE_MODE (short_integer_type_node)) 964 return unsigned_p ? short_unsigned_type_node : short_integer_type_node; 965 966 if (mode == TYPE_MODE (long_integer_type_node)) 967 return unsigned_p ? long_unsigned_type_node : long_integer_type_node; 968 969 if (mode == TYPE_MODE (long_long_integer_type_node)) 970 return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node; 971 972 for (i = 0; i < NUM_INT_N_ENTS; i ++) 973 if (int_n_enabled_p[i] 974 && mode == int_n_data[i].m) 975 return (unsigned_p ? int_n_trees[i].unsigned_type 976 : int_n_trees[i].signed_type); 977 978 if (mode == QImode) 979 return unsigned_p ? unsigned_intQI_type_node : intQI_type_node; 980 981 if (mode == HImode) 982 return unsigned_p ? unsigned_intHI_type_node : intHI_type_node; 983 984 if (mode == SImode) 985 return unsigned_p ? unsigned_intSI_type_node : intSI_type_node; 986 987 if (mode == DImode) 988 return unsigned_p ? unsigned_intDI_type_node : intDI_type_node; 989 990 #if HOST_BITS_PER_WIDE_INT >= 64 991 if (mode == TYPE_MODE (intTI_type_node)) 992 return unsigned_p ? unsigned_intTI_type_node : intTI_type_node; 993 #endif 994 995 if (mode == TYPE_MODE (float_type_node)) 996 return float_type_node; 997 998 if (mode == TYPE_MODE (double_type_node)) 999 return double_type_node; 1000 1001 if (mode == TYPE_MODE (long_double_type_node)) 1002 return long_double_type_node; 1003 1004 if (mode == TYPE_MODE (void_type_node)) 1005 return void_type_node; 1006 1007 if (mode == TYPE_MODE (build_pointer_type (char_type_node)) 1008 || mode == TYPE_MODE (build_pointer_type (integer_type_node))) 1009 { 1010 unsigned int precision 1011 = GET_MODE_PRECISION (as_a <scalar_int_mode> (mode)); 1012 return (unsigned_p 1013 ? make_unsigned_type (precision) 1014 : make_signed_type (precision)); 1015 } 1016 1017 if (COMPLEX_MODE_P (mode)) 1018 { 1019 machine_mode inner_mode; 1020 tree inner_type; 1021 1022 if (mode == TYPE_MODE (complex_float_type_node)) 1023 return complex_float_type_node; 1024 if (mode == TYPE_MODE (complex_double_type_node)) 1025 return complex_double_type_node; 1026 if (mode == TYPE_MODE (complex_long_double_type_node)) 1027 return complex_long_double_type_node; 1028 1029 if (mode == TYPE_MODE (complex_integer_type_node) && !unsigned_p) 1030 return complex_integer_type_node; 1031 1032 inner_mode = GET_MODE_INNER (mode); 1033 inner_type = lto_type_for_mode (inner_mode, unsigned_p); 1034 if (inner_type != NULL_TREE) 1035 return build_complex_type (inner_type); 1036 } 1037 else if (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL 1038 && valid_vector_subparts_p (GET_MODE_NUNITS (mode))) 1039 { 1040 unsigned int elem_bits = vector_element_size (GET_MODE_BITSIZE (mode), 1041 GET_MODE_NUNITS (mode)); 1042 tree bool_type = build_nonstandard_boolean_type (elem_bits); 1043 return build_vector_type_for_mode (bool_type, mode); 1044 } 1045 else if (VECTOR_MODE_P (mode) 1046 && valid_vector_subparts_p (GET_MODE_NUNITS (mode))) 1047 { 1048 machine_mode inner_mode = GET_MODE_INNER (mode); 1049 tree inner_type = lto_type_for_mode (inner_mode, unsigned_p); 1050 if (inner_type != NULL_TREE) 1051 return build_vector_type_for_mode (inner_type, mode); 1052 } 1053 1054 if (dfloat32_type_node != NULL_TREE 1055 && mode == TYPE_MODE (dfloat32_type_node)) 1056 return dfloat32_type_node; 1057 if (dfloat64_type_node != NULL_TREE 1058 && mode == TYPE_MODE (dfloat64_type_node)) 1059 return dfloat64_type_node; 1060 if (dfloat128_type_node != NULL_TREE 1061 && 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 static unsigned long num; 1183 1184 ASM_FORMAT_PRIVATE_NAME (label, name, num++); 1185 id = get_identifier (label); 1186 } 1187 1188 SET_DECL_ASSEMBLER_NAME (decl, id); 1189 } 1190 1191 static tree 1192 lto_pushdecl (tree t ATTRIBUTE_UNUSED) 1193 { 1194 /* Do nothing, since we get all information from DWARF and LTO 1195 sections. */ 1196 return NULL_TREE; 1197 } 1198 1199 static tree 1200 lto_getdecls (void) 1201 { 1202 /* We have our own write_globals langhook, hence the getdecls 1203 langhook shouldn't be used, except by dbxout.c, so we can't 1204 just abort here. */ 1205 return NULL_TREE; 1206 } 1207 1208 static tree 1209 lto_builtin_function (tree decl) 1210 { 1211 return decl; 1212 } 1213 1214 static void 1215 lto_register_builtin_type (tree type, const char *name) 1216 { 1217 tree decl; 1218 1219 if (!TYPE_NAME (type)) 1220 { 1221 decl = build_decl (UNKNOWN_LOCATION, TYPE_DECL, 1222 get_identifier (name), type); 1223 DECL_ARTIFICIAL (decl) = 1; 1224 TYPE_NAME (type) = decl; 1225 } 1226 1227 registered_builtin_types = tree_cons (0, type, registered_builtin_types); 1228 } 1229 1230 /* Build nodes that would have be created by the C front-end; necessary 1231 for including builtin-types.def and ultimately builtins.def. */ 1232 1233 static void 1234 lto_build_c_type_nodes (void) 1235 { 1236 gcc_assert (void_type_node); 1237 1238 void_list_node = build_tree_list (NULL_TREE, void_type_node); 1239 string_type_node = build_pointer_type (char_type_node); 1240 const_string_type_node 1241 = build_pointer_type (build_qualified_type (char_type_node, TYPE_QUAL_CONST)); 1242 1243 if (strcmp (SIZE_TYPE, "unsigned int") == 0) 1244 { 1245 intmax_type_node = integer_type_node; 1246 uintmax_type_node = unsigned_type_node; 1247 signed_size_type_node = integer_type_node; 1248 } 1249 else if (strcmp (SIZE_TYPE, "long unsigned int") == 0) 1250 { 1251 intmax_type_node = long_integer_type_node; 1252 uintmax_type_node = long_unsigned_type_node; 1253 signed_size_type_node = long_integer_type_node; 1254 } 1255 else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0) 1256 { 1257 intmax_type_node = long_long_integer_type_node; 1258 uintmax_type_node = long_long_unsigned_type_node; 1259 signed_size_type_node = long_long_integer_type_node; 1260 } 1261 else 1262 { 1263 int i; 1264 1265 signed_size_type_node = NULL_TREE; 1266 for (i = 0; i < NUM_INT_N_ENTS; i++) 1267 if (int_n_enabled_p[i]) 1268 { 1269 char name[50], altname[50]; 1270 sprintf (name, "__int%d unsigned", int_n_data[i].bitsize); 1271 sprintf (altname, "__int%d__ unsigned", int_n_data[i].bitsize); 1272 1273 if (strcmp (name, SIZE_TYPE) == 0 1274 || strcmp (altname, SIZE_TYPE) == 0) 1275 { 1276 intmax_type_node = int_n_trees[i].signed_type; 1277 uintmax_type_node = int_n_trees[i].unsigned_type; 1278 signed_size_type_node = int_n_trees[i].signed_type; 1279 } 1280 } 1281 if (signed_size_type_node == NULL_TREE) 1282 gcc_unreachable (); 1283 } 1284 1285 wint_type_node = unsigned_type_node; 1286 pid_type_node = integer_type_node; 1287 } 1288 1289 /* Perform LTO-specific initialization. */ 1290 1291 static bool 1292 lto_init (void) 1293 { 1294 int i; 1295 1296 /* Initialize LTO-specific data structures. */ 1297 in_lto_p = true; 1298 1299 /* We need to generate LTO if running in WPA mode. */ 1300 flag_generate_lto = (flag_incremental_link == INCREMENTAL_LINK_LTO 1301 || flag_wpa != NULL); 1302 1303 /* Create the basic integer types. */ 1304 build_common_tree_nodes (flag_signed_char); 1305 1306 /* The global tree for the main identifier is filled in by 1307 language-specific front-end initialization that is not run in the 1308 LTO back-end. It appears that all languages that perform such 1309 initialization currently do so in the same way, so we do it here. */ 1310 if (main_identifier_node == NULL_TREE) 1311 main_identifier_node = get_identifier ("main"); 1312 1313 /* In the C++ front-end, fileptr_type_node is defined as a variant 1314 copy of ptr_type_node, rather than ptr_node itself. The 1315 distinction should only be relevant to the front-end, so we 1316 always use the C definition here in lto1. 1317 Likewise for const struct tm*. */ 1318 for (unsigned i = 0; 1319 i < sizeof (builtin_structptr_types) / sizeof (builtin_structptr_type); 1320 ++i) 1321 { 1322 gcc_assert (builtin_structptr_types[i].node 1323 == builtin_structptr_types[i].base); 1324 gcc_assert (TYPE_MAIN_VARIANT (builtin_structptr_types[i].node) 1325 == builtin_structptr_types[i].base); 1326 } 1327 1328 lto_build_c_type_nodes (); 1329 gcc_assert (va_list_type_node); 1330 1331 if (TREE_CODE (va_list_type_node) == ARRAY_TYPE) 1332 { 1333 tree x = build_pointer_type (TREE_TYPE (va_list_type_node)); 1334 lto_define_builtins (x, x); 1335 } 1336 else 1337 { 1338 lto_define_builtins (build_reference_type (va_list_type_node), 1339 va_list_type_node); 1340 } 1341 1342 targetm.init_builtins (); 1343 build_common_builtin_nodes (); 1344 1345 /* Assign names to the builtin types, otherwise they'll end up 1346 as __unknown__ in debug info. 1347 ??? We simply need to stop pre-seeding the streamer cache. 1348 Below is modeled after from c-common.c:c_common_nodes_and_builtins */ 1349 #define NAME_TYPE(t,n) \ 1350 if (t) \ 1351 TYPE_NAME (t) = build_decl (UNKNOWN_LOCATION, TYPE_DECL, \ 1352 get_identifier (n), t) 1353 NAME_TYPE (integer_type_node, "int"); 1354 NAME_TYPE (char_type_node, "char"); 1355 NAME_TYPE (long_integer_type_node, "long int"); 1356 NAME_TYPE (unsigned_type_node, "unsigned int"); 1357 NAME_TYPE (long_unsigned_type_node, "long unsigned int"); 1358 NAME_TYPE (long_long_integer_type_node, "long long int"); 1359 NAME_TYPE (long_long_unsigned_type_node, "long long unsigned int"); 1360 NAME_TYPE (short_integer_type_node, "short int"); 1361 NAME_TYPE (short_unsigned_type_node, "short unsigned int"); 1362 if (signed_char_type_node != char_type_node) 1363 NAME_TYPE (signed_char_type_node, "signed char"); 1364 if (unsigned_char_type_node != char_type_node) 1365 NAME_TYPE (unsigned_char_type_node, "unsigned char"); 1366 NAME_TYPE (float_type_node, "float"); 1367 NAME_TYPE (double_type_node, "double"); 1368 NAME_TYPE (long_double_type_node, "long double"); 1369 NAME_TYPE (void_type_node, "void"); 1370 NAME_TYPE (boolean_type_node, "bool"); 1371 NAME_TYPE (complex_float_type_node, "complex float"); 1372 NAME_TYPE (complex_double_type_node, "complex double"); 1373 NAME_TYPE (complex_long_double_type_node, "complex long double"); 1374 for (i = 0; i < NUM_INT_N_ENTS; i++) 1375 if (int_n_enabled_p[i]) 1376 { 1377 char name[50]; 1378 sprintf (name, "__int%d", int_n_data[i].bitsize); 1379 NAME_TYPE (int_n_trees[i].signed_type, name); 1380 } 1381 #undef NAME_TYPE 1382 1383 return true; 1384 } 1385 1386 /* Register c++-specific dumps. */ 1387 1388 void 1389 lto_register_dumps (gcc::dump_manager *dumps) 1390 { 1391 lto_link_dump_id = dumps->dump_register 1392 (".lto-link", "ipa-lto-link", "ipa-lto-link", 1393 DK_ipa, OPTGROUP_NONE, false); 1394 decl_merge_dump_id = dumps->dump_register 1395 (".lto-decl-merge", "ipa-lto-decl-merge", "ipa-lto-decl-merge", 1396 DK_ipa, OPTGROUP_NONE, false); 1397 partition_dump_id = dumps->dump_register 1398 (".lto-partition", "ipa-lto-partition", "ipa-lto-partition", 1399 DK_ipa, OPTGROUP_NONE, false); 1400 } 1401 1402 1403 /* Initialize tree structures required by the LTO front end. */ 1404 1405 static void lto_init_ts (void) 1406 { 1407 tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1; 1408 } 1409 1410 #undef LANG_HOOKS_NAME 1411 #define LANG_HOOKS_NAME "GNU GIMPLE" 1412 #undef LANG_HOOKS_OPTION_LANG_MASK 1413 #define LANG_HOOKS_OPTION_LANG_MASK lto_option_lang_mask 1414 #undef LANG_HOOKS_COMPLAIN_WRONG_LANG_P 1415 #define LANG_HOOKS_COMPLAIN_WRONG_LANG_P lto_complain_wrong_lang_p 1416 #undef LANG_HOOKS_INIT_OPTIONS_STRUCT 1417 #define LANG_HOOKS_INIT_OPTIONS_STRUCT lto_init_options_struct 1418 #undef LANG_HOOKS_REGISTER_DUMPS 1419 #define LANG_HOOKS_REGISTER_DUMPS lto_register_dumps 1420 #undef LANG_HOOKS_HANDLE_OPTION 1421 #define LANG_HOOKS_HANDLE_OPTION lto_handle_option 1422 #undef LANG_HOOKS_POST_OPTIONS 1423 #define LANG_HOOKS_POST_OPTIONS lto_post_options 1424 #undef LANG_HOOKS_GET_ALIAS_SET 1425 #define LANG_HOOKS_GET_ALIAS_SET gimple_get_alias_set 1426 #undef LANG_HOOKS_TYPE_FOR_MODE 1427 #define LANG_HOOKS_TYPE_FOR_MODE lto_type_for_mode 1428 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME 1429 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lto_set_decl_assembler_name 1430 #undef LANG_HOOKS_GLOBAL_BINDINGS_P 1431 #define LANG_HOOKS_GLOBAL_BINDINGS_P lto_global_bindings_p 1432 #undef LANG_HOOKS_PUSHDECL 1433 #define LANG_HOOKS_PUSHDECL lto_pushdecl 1434 #undef LANG_HOOKS_GETDECLS 1435 #define LANG_HOOKS_GETDECLS lto_getdecls 1436 #undef LANG_HOOKS_REGISTER_BUILTIN_TYPE 1437 #define LANG_HOOKS_REGISTER_BUILTIN_TYPE lto_register_builtin_type 1438 #undef LANG_HOOKS_BUILTIN_FUNCTION 1439 #define LANG_HOOKS_BUILTIN_FUNCTION lto_builtin_function 1440 #undef LANG_HOOKS_INIT 1441 #define LANG_HOOKS_INIT lto_init 1442 #undef LANG_HOOKS_PARSE_FILE 1443 #define LANG_HOOKS_PARSE_FILE lto_main 1444 #undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS 1445 #define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true 1446 #undef LANG_HOOKS_TYPES_COMPATIBLE_P 1447 #define LANG_HOOKS_TYPES_COMPATIBLE_P NULL 1448 #undef LANG_HOOKS_EH_PERSONALITY 1449 #define LANG_HOOKS_EH_PERSONALITY lto_eh_personality 1450 1451 /* Attribute hooks. */ 1452 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE 1453 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE lto_attribute_table 1454 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE 1455 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE lto_format_attribute_table 1456 1457 #undef LANG_HOOKS_BEGIN_SECTION 1458 #define LANG_HOOKS_BEGIN_SECTION lto_obj_begin_section 1459 #undef LANG_HOOKS_APPEND_DATA 1460 #define LANG_HOOKS_APPEND_DATA lto_obj_append_data 1461 #undef LANG_HOOKS_END_SECTION 1462 #define LANG_HOOKS_END_SECTION lto_obj_end_section 1463 1464 #undef LANG_HOOKS_INIT_TS 1465 #define LANG_HOOKS_INIT_TS lto_init_ts 1466 1467 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER; 1468 1469 /* Language hooks that are not part of lang_hooks. */ 1470 1471 tree 1472 convert (tree type ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED) 1473 { 1474 gcc_unreachable (); 1475 } 1476 1477 /* Tree walking support. */ 1478 1479 static enum lto_tree_node_structure_enum 1480 lto_tree_node_structure (union lang_tree_node *t ATTRIBUTE_UNUSED) 1481 { 1482 return TS_LTO_GENERIC; 1483 } 1484 1485 #include "gtype-lto.h" 1486 #include "gt-lto-lto-lang.h" 1487