]> git.ipfire.org Git - thirdparty/gcc.git/blame - gcc/lto/lto-lang.c
projects / thirdparty / gcc.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
PR middle-end/82063 - issues with arguments enabled by -Wall
[thirdparty/gcc.git] / gcc / lto / lto-lang.c
CommitLineData
7bfefa9d 1/* Language-dependent hooks for LTO.
8e8f6434 2 Copyright (C) 2009-2018 Free Software Foundation, Inc.
7bfefa9d 3 Contributed by CodeSourcery, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along 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"
4cba6f60 24#include "target.h"
9ef16211 25#include "function.h"
9ef16211 26#include "basic-block.h"
7bfefa9d 27#include "tree.h"
9ef16211 28#include "gimple.h"
4cba6f60 29#include "stringpool.h"
4cba6f60 30#include "diagnostic-core.h"
9ed99284 31#include "stor-layout.h"
7bfefa9d 32#include "langhooks.h"
33#include "langhooks-def.h"
34#include "debug.h"
35#include "lto-tree.h"
36#include "lto.h"
30a86690 37#include "stringpool.h"
38#include "attribs.h"
7bfefa9d 39
025fe22b 40/* LTO specific dumps. */
41int lto_link_dump_id, decl_merge_dump_id, partition_dump_id;
42
7bfefa9d 43static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
4a68fd3c 44static tree handle_leaf_attribute (tree *, tree, tree, int, bool *);
7bfefa9d 45static tree handle_const_attribute (tree *, tree, tree, int, bool *);
46static tree handle_malloc_attribute (tree *, tree, tree, int, bool *);
47static tree handle_pure_attribute (tree *, tree, tree, int, bool *);
48static tree handle_novops_attribute (tree *, tree, tree, int, bool *);
49static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *);
50static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *);
51static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
52static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
ea0e88d1 53static tree handle_transaction_pure_attribute (tree *, tree, tree, int, bool *);
3affb5a8 54static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *);
e6c4532a 55static tree handle_patchable_function_entry_attribute (tree *, tree, tree,
56 int, bool *);
c8c597a7 57static tree ignore_attribute (tree *, tree, tree, int, bool *);
58
7bfefa9d 59static tree handle_format_attribute (tree *, tree, tree, int, bool *);
c8010b80 60static tree handle_fnspec_attribute (tree *, tree, tree, int, bool *);
7bfefa9d 61static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
62
dab0e385 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. */
68static 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
81static 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
87static 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
7bfefa9d 95/* Table of machine-independent attributes supported in GIMPLE. */
96const struct attribute_spec lto_attribute_table[] =
97{
672bc44d 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,
dab0e385 102 attr_noreturn_exclusions },
672bc44d 103 { "leaf", 0, 0, true, false, false, false,
104 handle_leaf_attribute, NULL },
7bfefa9d 105 /* The same comments as for noreturn attributes apply to const ones. */
672bc44d 106 { "const", 0, 0, true, false, false, false,
107 handle_const_attribute,
dab0e385 108 attr_const_pure_exclusions },
672bc44d 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,
dab0e385 113 attr_const_pure_exclusions },
672bc44d 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,
e6c4532a 121 handle_patchable_function_entry_attribute,
672bc44d 122 NULL },
123 { "returns_twice", 0, 0, true, false, false, false,
124 handle_returns_twice_attribute,
dab0e385 125 attr_returns_twice_exclusions },
672bc44d 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 },
c8c597a7 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. */
672bc44d 136 { "*tm regparm", 0, 0, false, true, true, false,
137 ignore_attribute, NULL },
138 { NULL, 0, 0, false, false, false, false, NULL, NULL }
7bfefa9d 139};
140
141/* Give the specifications for the format attributes, used by C and all
142 descendants. */
143
144const struct attribute_spec lto_format_attribute_table[] =
145{
672bc44d 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 }
7bfefa9d 153};
154
155enum built_in_attribute
156{
157#define DEF_ATTR_NULL_TREE(ENUM) ENUM,
158#define DEF_ATTR_INT(ENUM, VALUE) ENUM,
c8010b80 159#define DEF_ATTR_STRING(ENUM, VALUE) ENUM,
7bfefa9d 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
c8010b80 165#undef DEF_ATTR_STRING
7bfefa9d 166#undef DEF_ATTR_IDENT
167#undef DEF_ATTR_TREE_LIST
168 ATTR_LAST
169};
170
171static GTY(()) tree built_in_attributes[(int) ATTR_LAST];
172
173/* Builtin types. */
174
175enum 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,
3c77ca67 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,
43895be5 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,
7bfefa9d 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) \
6349b8cc 202 NAME,
e561d5e1 203#define DEF_FUNCTION_TYPE_VAR_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
204 ARG6) NAME,
6349b8cc 205#define DEF_FUNCTION_TYPE_VAR_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
206 ARG6, ARG7) NAME,
7bfefa9d 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
bc7bff74 218#undef DEF_FUNCTION_TYPE_8
43895be5 219#undef DEF_FUNCTION_TYPE_9
220#undef DEF_FUNCTION_TYPE_10
221#undef DEF_FUNCTION_TYPE_11
7bfefa9d 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
e561d5e1 228#undef DEF_FUNCTION_TYPE_VAR_6
6349b8cc 229#undef DEF_FUNCTION_TYPE_VAR_7
7bfefa9d 230#undef DEF_POINTER_TYPE
231 BT_LAST
232};
233
234typedef enum lto_builtin_type builtin_type;
235
236static GTY(()) tree builtin_types[(int) BT_LAST + 1];
237
238static GTY(()) tree string_type_node;
239static GTY(()) tree const_string_type_node;
240static GTY(()) tree wint_type_node;
241static GTY(()) tree intmax_type_node;
242static GTY(()) tree uintmax_type_node;
243static GTY(()) tree signed_size_type_node;
244
245/* Flags needed to process builtins.def. */
7bfefa9d 246int flag_isoc94;
247int flag_isoc99;
060fc206 248int flag_isoc11;
7bfefa9d 249
250/* Attribute handlers. */
251
252/* Handle a "noreturn" attribute; arguments as in
253 struct attribute_spec.handler. */
254
255static tree
256handle_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
4a68fd3c 276/* Handle a "leaf" attribute; arguments as in
277 struct attribute_spec.handler. */
278
279static tree
280handle_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}
7bfefa9d 297
298/* Handle a "const" attribute; arguments as in
299 struct attribute_spec.handler. */
300
301static tree
302handle_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{
dab0e385 306 if (TREE_CODE (*node) != FUNCTION_DECL
307 || !DECL_BUILT_IN (*node))
308 inform (UNKNOWN_LOCATION, "%s:%s: %E: %E", __FILE__, __func__, *node, name);
309
7bfefa9d 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
331static tree
332handle_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
349static tree
350handle_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
366static tree
367handle_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
380static bool
381get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp)
382{
383 /* Verify the arg number is a constant. */
e1d65c9f 384 if (!tree_fits_uhwi_p (arg_num_expr))
7bfefa9d 385 return false;
386
f9ae6f95 387 *valp = TREE_INT_CST_LOW (arg_num_expr);
7bfefa9d 388 return true;
389}
390
391/* Handle the "nonnull" attribute. */
392
393static tree
394handle_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;
7bfefa9d 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
1dc4d519 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. */
7bfefa9d 405 if (!args)
406 {
1dc4d519 407 gcc_assert (prototype_p (type)
408 || !TYPE_ATTRIBUTES (type)
409 || lookup_attribute ("type generic", TYPE_ATTRIBUTES (type)));
410
7bfefa9d 411 return NULL_TREE;
412 }
413
414 /* Argument list specified. Verify that each argument number references
415 a pointer argument. */
f018d957 416 for (; args; args = TREE_CHAIN (args))
7bfefa9d 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
446static tree
447handle_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
462static tree
463handle_sentinel_attribute (tree *node, tree ARG_UNUSED (name), tree args,
464 int ARG_UNUSED (flags),
465 bool * ARG_UNUSED (no_add_attrs))
466{
c33080b9 467 gcc_assert (stdarg_p (*node));
7bfefa9d 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
482static tree
483handle_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{
7bfefa9d 487 /* Ensure we have a function type. */
488 gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE);
489
7bfefa9d 490 /* Ensure we have a variadic function. */
c33080b9 491 gcc_assert (!prototype_p (*node) || stdarg_p (*node));
7bfefa9d 492
493 return NULL_TREE;
494}
495
ea0e88d1 496/* Handle a "transaction_pure" attribute. */
497
498static tree
499handle_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
3affb5a8 510/* Handle a "returns_twice" attribute. */
511
512static tree
513handle_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
e6c4532a 525static tree
526handle_patchable_function_entry_attribute (tree *, tree, tree, int, bool *)
527{
528 /* Nothing to be done here. */
529 return NULL_TREE;
530}
531
c8c597a7 532/* Ignore the given attribute. Used when this attribute may be usefully
533 overridden by the target, but is not used generically. */
534
535static tree
536ignore_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
7bfefa9d 544/* Handle a "format" attribute; arguments as in
545 struct attribute_spec.handler. */
546
547static tree
548handle_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
560tree
561handle_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
c8010b80 570/* Handle a "fn spec" attribute; arguments as in
571 struct attribute_spec.handler. */
572
573static tree
574handle_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
7bfefa9d 584/* Cribbed from c-common.c. */
585
586static void
587def_fn_type (builtin_type def, builtin_type ret, bool var, int n, ...)
588{
3a939d12 589 tree t;
590 tree *args = XALLOCAVEC (tree, n);
7bfefa9d 591 va_list list;
592 int i;
62cc770a 593 bool err = false;
7bfefa9d 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)
62cc770a 601 err = true;
3a939d12 602 args[i] = t;
7bfefa9d 603 }
604 va_end (list);
605
7bfefa9d 606 t = builtin_types[ret];
62cc770a 607 if (err)
608 t = error_mark_node;
7bfefa9d 609 if (t == error_mark_node)
62cc770a 610 ;
611 else if (var)
3a939d12 612 t = build_varargs_function_type_array (t, n, args);
613 else
614 t = build_function_type_array (t, n, args);
7bfefa9d 615
7bfefa9d 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
624static tree
625builtin_type_for_size (int size, bool unsignedp)
626{
8950f928 627 tree type = lang_hooks.types.type_for_size (size, unsignedp);
7bfefa9d 628 return type ? type : error_mark_node;
629}
630
631/* Support for DEF_BUILTIN. */
632
633static void
634def_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
b9a16870 656 set_builtin_decl (fncode, decl, implicit_p);
7bfefa9d 657}
658
659
660/* Initialize the attribute table for all the supported builtins. */
661
662static void
663lto_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);
c8010b80 670#define DEF_ATTR_STRING(ENUM, VALUE) \
671 built_in_attributes[(int) ENUM] = build_string (strlen (VALUE), VALUE);
7bfefa9d 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
c8010b80 682#undef DEF_ATTR_STRING
7bfefa9d 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
690static void
691lto_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);
bc7bff74 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);
43895be5 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);
7bfefa9d 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);
e561d5e1 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);
6349b8cc 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);
7bfefa9d 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
3c77ca67 754#undef DEF_FUNCTION_TYPE_0
7bfefa9d 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
3c77ca67 761#undef DEF_FUNCTION_TYPE_7
762#undef DEF_FUNCTION_TYPE_8
43895be5 763#undef DEF_FUNCTION_TYPE_9
764#undef DEF_FUNCTION_TYPE_10
765#undef DEF_FUNCTION_TYPE_11
7bfefa9d 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
e561d5e1 772#undef DEF_FUNCTION_TYPE_VAR_6
6349b8cc 773#undef DEF_FUNCTION_TYPE_VAR_7
7bfefa9d 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"
7bfefa9d 786}
787
788static GTY(()) tree registered_builtin_types;
789
7bfefa9d 790/* Language hooks. */
791
792static unsigned int
e88d34f6 793lto_option_lang_mask (void)
794{
795 return CL_LTO;
796}
797
798static bool
799lto_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
812static void
f3f006ad 813lto_init_options_struct (struct gcc_options *opts)
7bfefa9d 814{
97e90c2e 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. */
f3f006ad 819 opts->x_flag_complex_method = 2;
7bfefa9d 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
827const char *resolution_file_name;
b78351e5 828static bool
11dc3713 829lto_handle_option (size_t scode, const char *arg,
8e18705e 830 HOST_WIDE_INT value ATTRIBUTE_UNUSED,
831 int kind ATTRIBUTE_UNUSED,
3c6c0e40 832 location_t loc ATTRIBUTE_UNUSED,
b78351e5 833 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
7bfefa9d 834{
835 enum opt_code code = (enum opt_code) scode;
b78351e5 836 bool result = true;
7bfefa9d 837
838 switch (code)
839 {
eb4ef3d1 840 case OPT_fresolution_:
7bfefa9d 841 resolution_file_name = arg;
7bfefa9d 842 break;
843
844 case OPT_Wabi:
845 warn_psabi = value;
846 break;
847
3e17769e 848 case OPT_fwpa:
849 flag_wpa = value ? "" : NULL;
850 break;
851
7bfefa9d 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
863static bool
864lto_post_options (const char **pfilename ATTRIBUTE_UNUSED)
865{
7bfefa9d 866 /* -fltrans and -fwpa are mutually exclusive. Check for that here. */
867 if (flag_wpa && flag_ltrans)
48cf7037 868 error ("-fwpa and -fltrans are mutually exclusive");
7bfefa9d 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
4c4a180d 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 */
278cec16 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;
4c4a180d 892 flag_whole_program = 0;
278cec16 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 exclussive");
903 break;
904
905 case LTO_LINKER_OUTPUT_NOLTOREL: /* .o: incremental link producing asm */
906 flag_whole_program = 0;
907 flag_incremental_link = INCREMENTAL_LINK_NOLTO;
4c4a180d 908 break;
909
910 case LTO_LINKER_OUTPUT_DYN: /* .so: PID library */
911 /* On some targets, like i386 it makes sense to build PIC library wihout
912 -fpic for performance reasons. So no need to adjust flags. */
913 break;
914
915 case LTO_LINKER_OUTPUT_PIE: /* PIE binary */
916 /* If -fPIC or -fPIE was used at compile time, be sure that
917 flag_pie is 2. */
918 flag_pie = MAX (flag_pie, flag_pic);
21dae9f7 919 flag_pic = flag_pie;
12f79006 920 flag_shlib = 0;
4c4a180d 921 break;
922
923 case LTO_LINKER_OUTPUT_EXEC: /* Normal executable */
924 flag_pic = 0;
925 flag_pie = 0;
12f79006 926 flag_shlib = 0;
4c4a180d 927 break;
928
929 case LTO_LINKER_OUTPUT_UNKNOWN:
930 break;
931 }
932
7bfefa9d 933 /* Excess precision other than "fast" requires front-end
934 support. */
935 flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
936
2236cf7a 937 /* When partitioning, we can tear appart STRING_CSTs uses from the same
938 TU into multiple partitions. Without constant merging the constants
939 might not be equal at runtime. See PR50199. */
940 if (!flag_merge_constants)
941 flag_merge_constants = 1;
942
7bfefa9d 943 /* Initialize the compiler back end. */
944 return false;
945}
946
7bfefa9d 947/* Return a data type that has machine mode MODE.
948 If the mode is an integer,
949 then UNSIGNEDP selects between signed and unsigned types.
950 If the mode is a fixed-point mode,
951 then UNSIGNEDP selects between saturating and nonsaturating types. */
952
953static tree
3754d046 954lto_type_for_mode (machine_mode mode, int unsigned_p)
7bfefa9d 955{
956 tree t;
8f88884c 957 int i;
7bfefa9d 958
959 if (mode == TYPE_MODE (integer_type_node))
960 return unsigned_p ? unsigned_type_node : integer_type_node;
961
962 if (mode == TYPE_MODE (signed_char_type_node))
963 return unsigned_p ? unsigned_char_type_node : signed_char_type_node;
964
965 if (mode == TYPE_MODE (short_integer_type_node))
966 return unsigned_p ? short_unsigned_type_node : short_integer_type_node;
967
968 if (mode == TYPE_MODE (long_integer_type_node))
969 return unsigned_p ? long_unsigned_type_node : long_integer_type_node;
970
971 if (mode == TYPE_MODE (long_long_integer_type_node))
972 return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node;
973
8f88884c 974 for (i = 0; i < NUM_INT_N_ENTS; i ++)
975 if (int_n_enabled_p[i]
976 && mode == int_n_data[i].m)
977 return (unsigned_p ? int_n_trees[i].unsigned_type
978 : int_n_trees[i].signed_type);
979
7bfefa9d 980 if (mode == QImode)
981 return unsigned_p ? unsigned_intQI_type_node : intQI_type_node;
982
983 if (mode == HImode)
984 return unsigned_p ? unsigned_intHI_type_node : intHI_type_node;
985
986 if (mode == SImode)
987 return unsigned_p ? unsigned_intSI_type_node : intSI_type_node;
988
989 if (mode == DImode)
990 return unsigned_p ? unsigned_intDI_type_node : intDI_type_node;
991
992#if HOST_BITS_PER_WIDE_INT >= 64
993 if (mode == TYPE_MODE (intTI_type_node))
994 return unsigned_p ? unsigned_intTI_type_node : intTI_type_node;
995#endif
996
997 if (mode == TYPE_MODE (float_type_node))
998 return float_type_node;
999
1000 if (mode == TYPE_MODE (double_type_node))
1001 return double_type_node;
1002
1003 if (mode == TYPE_MODE (long_double_type_node))
1004 return long_double_type_node;
1005
1006 if (mode == TYPE_MODE (void_type_node))
1007 return void_type_node;
1008
7a6aeeed 1009 if (mode == TYPE_MODE (build_pointer_type (char_type_node))
1010 || mode == TYPE_MODE (build_pointer_type (integer_type_node)))
1011 {
1012 unsigned int precision
1013 = GET_MODE_PRECISION (as_a <scalar_int_mode> (mode));
1014 return (unsigned_p
1015 ? make_unsigned_type (precision)
1016 : make_signed_type (precision));
1017 }
7bfefa9d 1018
1019 if (COMPLEX_MODE_P (mode))
1020 {
3754d046 1021 machine_mode inner_mode;
7bfefa9d 1022 tree inner_type;
1023
1024 if (mode == TYPE_MODE (complex_float_type_node))
1025 return complex_float_type_node;
1026 if (mode == TYPE_MODE (complex_double_type_node))
1027 return complex_double_type_node;
1028 if (mode == TYPE_MODE (complex_long_double_type_node))
1029 return complex_long_double_type_node;
1030
1031 if (mode == TYPE_MODE (complex_integer_type_node) && !unsigned_p)
1032 return complex_integer_type_node;
1033
1034 inner_mode = GET_MODE_INNER (mode);
1035 inner_type = lto_type_for_mode (inner_mode, unsigned_p);
1036 if (inner_type != NULL_TREE)
1037 return build_complex_type (inner_type);
1038 }
8464736b 1039 else if (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL
1040 && valid_vector_subparts_p (GET_MODE_NUNITS (mode)))
1041 {
1042 unsigned int elem_bits = vector_element_size (GET_MODE_BITSIZE (mode),
1043 GET_MODE_NUNITS (mode));
1044 tree bool_type = build_nonstandard_boolean_type (elem_bits);
1045 return build_vector_type_for_mode (bool_type, mode);
1046 }
f08ee65f 1047 else if (VECTOR_MODE_P (mode)
1048 && valid_vector_subparts_p (GET_MODE_NUNITS (mode)))
7bfefa9d 1049 {
3754d046 1050 machine_mode inner_mode = GET_MODE_INNER (mode);
7bfefa9d 1051 tree inner_type = lto_type_for_mode (inner_mode, unsigned_p);
1052 if (inner_type != NULL_TREE)
1053 return build_vector_type_for_mode (inner_type, mode);
1054 }
1055
1056 if (mode == TYPE_MODE (dfloat32_type_node))
1057 return dfloat32_type_node;
1058 if (mode == TYPE_MODE (dfloat64_type_node))
1059 return dfloat64_type_node;
1060 if (mode == TYPE_MODE (dfloat128_type_node))
1061 return dfloat128_type_node;
1062
1063 if (ALL_SCALAR_FIXED_POINT_MODE_P (mode))
1064 {
1065 if (mode == TYPE_MODE (short_fract_type_node))
1066 return unsigned_p ? sat_short_fract_type_node : short_fract_type_node;
1067 if (mode == TYPE_MODE (fract_type_node))
1068 return unsigned_p ? sat_fract_type_node : fract_type_node;
1069 if (mode == TYPE_MODE (long_fract_type_node))
1070 return unsigned_p ? sat_long_fract_type_node : long_fract_type_node;
1071 if (mode == TYPE_MODE (long_long_fract_type_node))
1072 return unsigned_p ? sat_long_long_fract_type_node
1073 : long_long_fract_type_node;
1074
1075 if (mode == TYPE_MODE (unsigned_short_fract_type_node))
1076 return unsigned_p ? sat_unsigned_short_fract_type_node
1077 : unsigned_short_fract_type_node;
1078 if (mode == TYPE_MODE (unsigned_fract_type_node))
1079 return unsigned_p ? sat_unsigned_fract_type_node
1080 : unsigned_fract_type_node;
1081 if (mode == TYPE_MODE (unsigned_long_fract_type_node))
1082 return unsigned_p ? sat_unsigned_long_fract_type_node
1083 : unsigned_long_fract_type_node;
1084 if (mode == TYPE_MODE (unsigned_long_long_fract_type_node))
1085 return unsigned_p ? sat_unsigned_long_long_fract_type_node
1086 : unsigned_long_long_fract_type_node;
1087
1088 if (mode == TYPE_MODE (short_accum_type_node))
1089 return unsigned_p ? sat_short_accum_type_node : short_accum_type_node;
1090 if (mode == TYPE_MODE (accum_type_node))
1091 return unsigned_p ? sat_accum_type_node : accum_type_node;
1092 if (mode == TYPE_MODE (long_accum_type_node))
1093 return unsigned_p ? sat_long_accum_type_node : long_accum_type_node;
1094 if (mode == TYPE_MODE (long_long_accum_type_node))
1095 return unsigned_p ? sat_long_long_accum_type_node
1096 : long_long_accum_type_node;
1097
1098 if (mode == TYPE_MODE (unsigned_short_accum_type_node))
1099 return unsigned_p ? sat_unsigned_short_accum_type_node
1100 : unsigned_short_accum_type_node;
1101 if (mode == TYPE_MODE (unsigned_accum_type_node))
1102 return unsigned_p ? sat_unsigned_accum_type_node
1103 : unsigned_accum_type_node;
1104 if (mode == TYPE_MODE (unsigned_long_accum_type_node))
1105 return unsigned_p ? sat_unsigned_long_accum_type_node
1106 : unsigned_long_accum_type_node;
1107 if (mode == TYPE_MODE (unsigned_long_long_accum_type_node))
1108 return unsigned_p ? sat_unsigned_long_long_accum_type_node
1109 : unsigned_long_long_accum_type_node;
1110
1111 if (mode == QQmode)
1112 return unsigned_p ? sat_qq_type_node : qq_type_node;
1113 if (mode == HQmode)
1114 return unsigned_p ? sat_hq_type_node : hq_type_node;
1115 if (mode == SQmode)
1116 return unsigned_p ? sat_sq_type_node : sq_type_node;
1117 if (mode == DQmode)
1118 return unsigned_p ? sat_dq_type_node : dq_type_node;
1119 if (mode == TQmode)
1120 return unsigned_p ? sat_tq_type_node : tq_type_node;
1121
1122 if (mode == UQQmode)
1123 return unsigned_p ? sat_uqq_type_node : uqq_type_node;
1124 if (mode == UHQmode)
1125 return unsigned_p ? sat_uhq_type_node : uhq_type_node;
1126 if (mode == USQmode)
1127 return unsigned_p ? sat_usq_type_node : usq_type_node;
1128 if (mode == UDQmode)
1129 return unsigned_p ? sat_udq_type_node : udq_type_node;
1130 if (mode == UTQmode)
1131 return unsigned_p ? sat_utq_type_node : utq_type_node;
1132
1133 if (mode == HAmode)
1134 return unsigned_p ? sat_ha_type_node : ha_type_node;
1135 if (mode == SAmode)
1136 return unsigned_p ? sat_sa_type_node : sa_type_node;
1137 if (mode == DAmode)
1138 return unsigned_p ? sat_da_type_node : da_type_node;
1139 if (mode == TAmode)
1140 return unsigned_p ? sat_ta_type_node : ta_type_node;
1141
1142 if (mode == UHAmode)
1143 return unsigned_p ? sat_uha_type_node : uha_type_node;
1144 if (mode == USAmode)
1145 return unsigned_p ? sat_usa_type_node : usa_type_node;
1146 if (mode == UDAmode)
1147 return unsigned_p ? sat_uda_type_node : uda_type_node;
1148 if (mode == UTAmode)
1149 return unsigned_p ? sat_uta_type_node : uta_type_node;
1150 }
1151
1152 for (t = registered_builtin_types; t; t = TREE_CHAIN (t))
1153 if (TYPE_MODE (TREE_VALUE (t)) == mode)
1154 return TREE_VALUE (t);
1155
1156 return NULL_TREE;
1157}
1158
1d2bb655 1159/* Return true if we are in the global binding level. */
1160
1161static bool
1162lto_global_bindings_p (void)
7bfefa9d 1163{
1164 return cfun == NULL;
1165}
1166
1167static void
1168lto_set_decl_assembler_name (tree decl)
1169{
1170 /* This is almost the same as lhd_set_decl_assembler_name, except that
1171 we need to uniquify file-scope names, even if they are not
1172 TREE_PUBLIC, to avoid conflicts between individual files. */
1173 tree id;
1174
1175 if (TREE_PUBLIC (decl))
1176 id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl));
1177 else
1178 {
1179 const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
1180 char *label;
1181
1182 ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
1183 id = get_identifier (label);
1184 }
1185
1186 SET_DECL_ASSEMBLER_NAME (decl, id);
1187}
1188
1189static tree
1190lto_pushdecl (tree t ATTRIBUTE_UNUSED)
1191{
1192 /* Do nothing, since we get all information from DWARF and LTO
1193 sections. */
1194 return NULL_TREE;
1195}
1196
1197static tree
1198lto_getdecls (void)
1199{
5cd33168 1200 /* We have our own write_globals langhook, hence the getdecls
1201 langhook shouldn't be used, except by dbxout.c, so we can't
1202 just abort here. */
1203 return NULL_TREE;
7bfefa9d 1204}
1205
7bfefa9d 1206static tree
1207lto_builtin_function (tree decl)
1208{
7bfefa9d 1209 return decl;
1210}
1211
1212static void
1213lto_register_builtin_type (tree type, const char *name)
1214{
1215 tree decl;
1216
7bfefa9d 1217 if (!TYPE_NAME (type))
883554eb 1218 {
1219 decl = build_decl (UNKNOWN_LOCATION, TYPE_DECL,
1220 get_identifier (name), type);
1221 DECL_ARTIFICIAL (decl) = 1;
1222 TYPE_NAME (type) = decl;
1223 }
7bfefa9d 1224
1225 registered_builtin_types = tree_cons (0, type, registered_builtin_types);
1226}
1227
1228/* Build nodes that would have be created by the C front-end; necessary
1229 for including builtin-types.def and ultimately builtins.def. */
1230
1231static void
1232lto_build_c_type_nodes (void)
1233{
1234 gcc_assert (void_type_node);
1235
1236 void_list_node = build_tree_list (NULL_TREE, void_type_node);
1237 string_type_node = build_pointer_type (char_type_node);
1238 const_string_type_node
1239 = build_pointer_type (build_qualified_type (char_type_node, TYPE_QUAL_CONST));
1240
1241 if (strcmp (SIZE_TYPE, "unsigned int") == 0)
1242 {
1243 intmax_type_node = integer_type_node;
1244 uintmax_type_node = unsigned_type_node;
1245 signed_size_type_node = integer_type_node;
1246 }
1247 else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
1248 {
1249 intmax_type_node = long_integer_type_node;
1250 uintmax_type_node = long_unsigned_type_node;
1251 signed_size_type_node = long_integer_type_node;
1252 }
6dd40464 1253 else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0)
1254 {
1255 intmax_type_node = long_long_integer_type_node;
1256 uintmax_type_node = long_long_unsigned_type_node;
1257 signed_size_type_node = long_long_integer_type_node;
1258 }
7bfefa9d 1259 else
9f75f026 1260 {
1261 int i;
1262
1263 signed_size_type_node = NULL_TREE;
1264 for (i = 0; i < NUM_INT_N_ENTS; i++)
1265 if (int_n_enabled_p[i])
1266 {
1267 char name[50];
1268 sprintf (name, "__int%d unsigned", int_n_data[i].bitsize);
1269
1270 if (strcmp (name, SIZE_TYPE) == 0)
1271 {
1272 intmax_type_node = int_n_trees[i].signed_type;
1273 uintmax_type_node = int_n_trees[i].unsigned_type;
1274 signed_size_type_node = int_n_trees[i].signed_type;
1275 }
1276 }
1277 if (signed_size_type_node == NULL_TREE)
1278 gcc_unreachable ();
1279 }
7bfefa9d 1280
1281 wint_type_node = unsigned_type_node;
1282 pid_type_node = integer_type_node;
1283}
1284
7bfefa9d 1285/* Perform LTO-specific initialization. */
1286
1287static bool
1288lto_init (void)
1289{
9f75f026 1290 int i;
1291
92bc38e7 1292 /* Initialize LTO-specific data structures. */
1293 in_lto_p = true;
1294
7bfefa9d 1295 /* We need to generate LTO if running in WPA mode. */
278cec16 1296 flag_generate_lto = (flag_incremental_link == INCREMENTAL_LINK_LTO
1297 || flag_wpa != NULL);
7bfefa9d 1298
7bfefa9d 1299 /* Create the basic integer types. */
600695e0 1300 build_common_tree_nodes (flag_signed_char);
7bfefa9d 1301
7bfefa9d 1302 /* The global tree for the main identifier is filled in by
1303 language-specific front-end initialization that is not run in the
1304 LTO back-end. It appears that all languages that perform such
1305 initialization currently do so in the same way, so we do it here. */
1306 if (main_identifier_node == NULL_TREE)
1307 main_identifier_node = get_identifier ("main");
1308
1309 /* In the C++ front-end, fileptr_type_node is defined as a variant
47ae02b7 1310 copy of ptr_type_node, rather than ptr_node itself. The
7bfefa9d 1311 distinction should only be relevant to the front-end, so we
4e551c7d 1312 always use the C definition here in lto1.
1313 Likewise for const struct tm*. */
1314 for (unsigned i = 0;
1315 i < sizeof (builtin_structptr_types) / sizeof (builtin_structptr_type);
1316 ++i)
1317 {
1318 gcc_assert (builtin_structptr_types[i].node
1319 == builtin_structptr_types[i].base);
1320 gcc_assert (TYPE_MAIN_VARIANT (builtin_structptr_types[i].node)
1321 == builtin_structptr_types[i].base);
1322 }
7bfefa9d 1323
7bfefa9d 1324 lto_build_c_type_nodes ();
1325 gcc_assert (va_list_type_node);
1326
1327 if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
1328 {
1329 tree x = build_pointer_type (TREE_TYPE (va_list_type_node));
1330 lto_define_builtins (x, x);
1331 }
1332 else
1333 {
fc8393b7 1334 lto_define_builtins (build_reference_type (va_list_type_node),
1335 va_list_type_node);
7bfefa9d 1336 }
fc8393b7 1337
7bfefa9d 1338 targetm.init_builtins ();
1339 build_common_builtin_nodes ();
1340
6abc14d6 1341 /* Assign names to the builtin types, otherwise they'll end up
1342 as __unknown__ in debug info.
1343 ??? We simply need to stop pre-seeding the streamer cache.
1344 Below is modeled after from c-common.c:c_common_nodes_and_builtins */
1345#define NAME_TYPE(t,n) \
1346 if (t) \
1347 TYPE_NAME (t) = build_decl (UNKNOWN_LOCATION, TYPE_DECL, \
1348 get_identifier (n), t)
1349 NAME_TYPE (integer_type_node, "int");
1350 NAME_TYPE (char_type_node, "char");
1351 NAME_TYPE (long_integer_type_node, "long int");
1352 NAME_TYPE (unsigned_type_node, "unsigned int");
1353 NAME_TYPE (long_unsigned_type_node, "long unsigned int");
1354 NAME_TYPE (long_long_integer_type_node, "long long int");
1355 NAME_TYPE (long_long_unsigned_type_node, "long long unsigned int");
1356 NAME_TYPE (short_integer_type_node, "short int");
1357 NAME_TYPE (short_unsigned_type_node, "short unsigned int");
1358 if (signed_char_type_node != char_type_node)
1359 NAME_TYPE (signed_char_type_node, "signed char");
1360 if (unsigned_char_type_node != char_type_node)
1361 NAME_TYPE (unsigned_char_type_node, "unsigned char");
1362 NAME_TYPE (float_type_node, "float");
1363 NAME_TYPE (double_type_node, "double");
1364 NAME_TYPE (long_double_type_node, "long double");
1365 NAME_TYPE (void_type_node, "void");
1366 NAME_TYPE (boolean_type_node, "bool");
0baf842d 1367 NAME_TYPE (complex_float_type_node, "complex float");
1368 NAME_TYPE (complex_double_type_node, "complex double");
1369 NAME_TYPE (complex_long_double_type_node, "complex long double");
9f75f026 1370 for (i = 0; i < NUM_INT_N_ENTS; i++)
1371 if (int_n_enabled_p[i])
1372 {
1373 char name[50];
1374 sprintf (name, "__int%d", int_n_data[i].bitsize);
1375 NAME_TYPE (int_n_trees[i].signed_type, name);
1376 }
6abc14d6 1377#undef NAME_TYPE
1378
7bfefa9d 1379 return true;
1380}
1381
025fe22b 1382/* Register c++-specific dumps. */
1383
1384void
1385lto_register_dumps (gcc::dump_manager *dumps)
1386{
1387 lto_link_dump_id = dumps->dump_register
1388 (".lto-link", "ipa-lto-link", "ipa-lto-link",
1389 DK_ipa, OPTGROUP_NONE, false);
1390 decl_merge_dump_id = dumps->dump_register
1391 (".lto-decl-merge", "ipa-lto-decl-merge", "ipa-lto-decl-merge",
1392 DK_ipa, OPTGROUP_NONE, false);
1393 partition_dump_id = dumps->dump_register
1394 (".lto-partition", "ipa-lto-partition", "ipa-lto-partition",
1395 DK_ipa, OPTGROUP_NONE, false);
1396}
1397
1398
7bfefa9d 1399/* Initialize tree structures required by the LTO front end. */
1400
1401static void lto_init_ts (void)
1402{
1403 tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
1404}
1405
1406#undef LANG_HOOKS_NAME
1407#define LANG_HOOKS_NAME "GNU GIMPLE"
e88d34f6 1408#undef LANG_HOOKS_OPTION_LANG_MASK
1409#define LANG_HOOKS_OPTION_LANG_MASK lto_option_lang_mask
1410#undef LANG_HOOKS_COMPLAIN_WRONG_LANG_P
1411#define LANG_HOOKS_COMPLAIN_WRONG_LANG_P lto_complain_wrong_lang_p
f3f006ad 1412#undef LANG_HOOKS_INIT_OPTIONS_STRUCT
1413#define LANG_HOOKS_INIT_OPTIONS_STRUCT lto_init_options_struct
025fe22b 1414#undef LANG_HOOKS_REGISTER_DUMPS
1415#define LANG_HOOKS_REGISTER_DUMPS lto_register_dumps
7bfefa9d 1416#undef LANG_HOOKS_HANDLE_OPTION
1417#define LANG_HOOKS_HANDLE_OPTION lto_handle_option
1418#undef LANG_HOOKS_POST_OPTIONS
1419#define LANG_HOOKS_POST_OPTIONS lto_post_options
1420#undef LANG_HOOKS_GET_ALIAS_SET
1421#define LANG_HOOKS_GET_ALIAS_SET gimple_get_alias_set
1422#undef LANG_HOOKS_TYPE_FOR_MODE
1423#define LANG_HOOKS_TYPE_FOR_MODE lto_type_for_mode
7bfefa9d 1424#undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
1425#define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lto_set_decl_assembler_name
1426#undef LANG_HOOKS_GLOBAL_BINDINGS_P
1427#define LANG_HOOKS_GLOBAL_BINDINGS_P lto_global_bindings_p
1428#undef LANG_HOOKS_PUSHDECL
1429#define LANG_HOOKS_PUSHDECL lto_pushdecl
1430#undef LANG_HOOKS_GETDECLS
1431#define LANG_HOOKS_GETDECLS lto_getdecls
7bfefa9d 1432#undef LANG_HOOKS_REGISTER_BUILTIN_TYPE
1433#define LANG_HOOKS_REGISTER_BUILTIN_TYPE lto_register_builtin_type
1434#undef LANG_HOOKS_BUILTIN_FUNCTION
1435#define LANG_HOOKS_BUILTIN_FUNCTION lto_builtin_function
1436#undef LANG_HOOKS_INIT
1437#define LANG_HOOKS_INIT lto_init
1438#undef LANG_HOOKS_PARSE_FILE
1439#define LANG_HOOKS_PARSE_FILE lto_main
7bfefa9d 1440#undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
1441#define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
1442#undef LANG_HOOKS_TYPES_COMPATIBLE_P
1443#define LANG_HOOKS_TYPES_COMPATIBLE_P NULL
3c9e9cba 1444#undef LANG_HOOKS_EH_PERSONALITY
1445#define LANG_HOOKS_EH_PERSONALITY lto_eh_personality
7bfefa9d 1446
1447/* Attribute hooks. */
1448#undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
1449#define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE lto_attribute_table
1450#undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
1451#define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE lto_format_attribute_table
1452
1453#undef LANG_HOOKS_BEGIN_SECTION
3ba0ce47 1454#define LANG_HOOKS_BEGIN_SECTION lto_obj_begin_section
7bfefa9d 1455#undef LANG_HOOKS_APPEND_DATA
3ba0ce47 1456#define LANG_HOOKS_APPEND_DATA lto_obj_append_data
7bfefa9d 1457#undef LANG_HOOKS_END_SECTION
3ba0ce47 1458#define LANG_HOOKS_END_SECTION lto_obj_end_section
7bfefa9d 1459
1460#undef LANG_HOOKS_INIT_TS
1461#define LANG_HOOKS_INIT_TS lto_init_ts
1462
1463struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
1464
1465/* Language hooks that are not part of lang_hooks. */
1466
1467tree
1468convert (tree type ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
1469{
1470 gcc_unreachable ();
1471}
1472
1473/* Tree walking support. */
1474
1475static enum lto_tree_node_structure_enum
1476lto_tree_node_structure (union lang_tree_node *t ATTRIBUTE_UNUSED)
1477{
1478 return TS_LTO_GENERIC;
1479}
1480
7bfefa9d 1481#include "gtype-lto.h"
1482#include "gt-lto-lto-lang.h"
Mirror of https://gcc.gnu.org/git/gcc.git