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2541503d 1/* Routines for reading trees from a file stream.
2
711789cc 3 Copyright (C) 2011-2013 Free Software Foundation, Inc.
2541503d 4 Contributed by Diego Novillo <dnovillo@google.com>
5
6This file is part of GCC.
7
8GCC is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
10Software Foundation; either version 3, or (at your option) any later
11version.
12
13GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16for more details.
17
18You should have received a copy of the GNU General Public License
19along with GCC; see the file COPYING3. If not see
20<http://www.gnu.org/licenses/>. */
21
22#include "config.h"
23#include "system.h"
24#include "coretypes.h"
25#include "diagnostic.h"
26#include "tree.h"
9ed99284 27#include "stringpool.h"
b23fb4cb 28#include "gimple.h"
2541503d 29#include "tree-streamer.h"
30#include "data-streamer.h"
31#include "streamer-hooks.h"
32#include "lto-streamer.h"
33
34/* Read a STRING_CST from the string table in DATA_IN using input
35 block IB. */
36
37tree
7f385784 38streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
2541503d 39{
40 unsigned int len;
41 const char * ptr;
42
7f385784 43 ptr = streamer_read_indexed_string (data_in, ib, &len);
2541503d 44 if (!ptr)
45 return NULL;
46 return build_string (len, ptr);
47}
48
49
50/* Read an IDENTIFIER from the string table in DATA_IN using input
51 block IB. */
52
53static tree
54input_identifier (struct data_in *data_in, struct lto_input_block *ib)
55{
56 unsigned int len;
57 const char *ptr;
58
7f385784 59 ptr = streamer_read_indexed_string (data_in, ib, &len);
2541503d 60 if (!ptr)
61 return NULL;
62 return get_identifier_with_length (ptr, len);
63}
64
65
66/* Read a chain of tree nodes from input block IB. DATA_IN contains
67 tables and descriptors for the file being read. */
68
7f385784 69tree
70streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
2541503d 71{
2541503d 72 tree first, prev, curr;
73
e41fac10 74 /* The chain is written as NULL terminated list of trees. */
2541503d 75 first = prev = NULL_TREE;
e41fac10 76 do
2541503d 77 {
515cf651 78 curr = stream_read_tree (ib, data_in);
2541503d 79 if (prev)
80 TREE_CHAIN (prev) = curr;
81 else
82 first = curr;
83
2541503d 84 prev = curr;
85 }
e41fac10 86 while (curr);
2541503d 87
88 return first;
89}
90
91
92/* Unpack all the non-pointer fields of the TS_BASE structure of
93 expression EXPR from bitpack BP. */
94
95static void
96unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
97{
98 /* Note that the code for EXPR has already been unpacked to create EXPR in
7f385784 99 streamer_alloc_tree. */
2541503d 100 if (!TYPE_P (expr))
101 {
102 TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
103 TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
104 TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
105
106 /* TREE_PUBLIC is used on types to indicate that the type
107 has a TYPE_CACHED_VALUES vector. This is not streamed out,
108 so we skip it here. */
109 TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
110 }
111 else
112 bp_unpack_value (bp, 4);
113 TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
114 TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
115 if (DECL_P (expr))
116 DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
117 else if (TYPE_P (expr))
118 TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
119 else
120 bp_unpack_value (bp, 1);
121 TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
122 if (TYPE_P (expr))
123 TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
124 else
125 TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
2541503d 126 TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
127 TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
8ceff600 128 if (TREE_CODE (expr) != TREE_BINFO)
129 TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
2541503d 130 TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
131 TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
132 if (TYPE_P (expr))
2436e5d5 133 {
134 TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
135 TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
136 }
2541503d 137 else if (TREE_CODE (expr) == SSA_NAME)
138 SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
139 else
140 bp_unpack_value (bp, 1);
141}
142
143
42603940 144/* Unpack all the non-pointer fields of the TS_INT_CST structure of
145 expression EXPR from bitpack BP. */
146
147static void
148unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
149{
31d89c57 150 TREE_INT_CST_LOW (expr) = bp_unpack_var_len_unsigned (bp);
151 TREE_INT_CST_HIGH (expr) = bp_unpack_var_len_int (bp);
42603940 152}
153
154
2541503d 155/* Unpack all the non-pointer fields of the TS_REAL_CST structure of
156 expression EXPR from bitpack BP. */
157
158static void
159unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
160{
161 unsigned i;
162 REAL_VALUE_TYPE r;
163 REAL_VALUE_TYPE *rp;
164
165 r.cl = (unsigned) bp_unpack_value (bp, 2);
166 r.decimal = (unsigned) bp_unpack_value (bp, 1);
167 r.sign = (unsigned) bp_unpack_value (bp, 1);
168 r.signalling = (unsigned) bp_unpack_value (bp, 1);
169 r.canonical = (unsigned) bp_unpack_value (bp, 1);
170 r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
171 for (i = 0; i < SIGSZ; i++)
172 r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
173
174 rp = ggc_alloc_real_value ();
175 memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
176 TREE_REAL_CST_PTR (expr) = rp;
177}
178
179
180/* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
181 expression EXPR from bitpack BP. */
182
183static void
184unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
185{
0920ab59 186 FIXED_VALUE_TYPE *fp = ggc_alloc_fixed_value ();
187 fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
188 fp->data.low = bp_unpack_var_len_int (bp);
189 fp->data.high = bp_unpack_var_len_int (bp);
190 TREE_FIXED_CST_PTR (expr) = fp;
2541503d 191}
192
2541503d 193/* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
194 of expression EXPR from bitpack BP. */
195
196static void
197unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
198{
199 DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
200 DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
201 DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
202 DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
203 DECL_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
204 DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
205 DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
206 DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
2541503d 207 DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
208 DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
209 DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
210
211 if (TREE_CODE (expr) == LABEL_DECL)
212 {
2541503d 213 EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
214
215 /* Always assume an initial value of -1 for LABEL_DECL_UID to
216 force gimple_set_bb to recreate label_to_block_map. */
217 LABEL_DECL_UID (expr) = -1;
218 }
219
220 if (TREE_CODE (expr) == FIELD_DECL)
221 {
222 DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
223 DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
224 expr->decl_common.off_align = bp_unpack_value (bp, 8);
225 }
226
05c14132 227 if (TREE_CODE (expr) == VAR_DECL)
8e966116 228 {
229 DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
230 DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
231 }
05c14132 232
2541503d 233 if (TREE_CODE (expr) == RESULT_DECL
234 || TREE_CODE (expr) == PARM_DECL
235 || TREE_CODE (expr) == VAR_DECL)
236 {
237 DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
238 if (TREE_CODE (expr) == VAR_DECL
239 || TREE_CODE (expr) == PARM_DECL)
240 DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
2541503d 241 }
242}
243
244
245/* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
246 of expression EXPR from bitpack BP. */
247
248static void
249unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
250{
251 DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
252}
253
254
255/* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
256 of expression EXPR from bitpack BP. */
257
258static void
259unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
260{
2541503d 261 DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
262 DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
263 DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
264 DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
265 DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp, 1);
266 DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp, 2);
267 DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp, 1);
268
269 if (TREE_CODE (expr) == VAR_DECL)
270 {
271 DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
2541503d 272 DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
273 DECL_TLS_MODEL (expr) = (enum tls_model) bp_unpack_value (bp, 3);
274 }
275
2d9cc481 276 if (TREE_CODE (expr) == FUNCTION_DECL)
277 {
278 DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
279 DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
280 DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
281 }
2541503d 282 if (VAR_OR_FUNCTION_DECL_P (expr))
283 {
284 priority_type p;
285 p = (priority_type) bp_unpack_var_len_unsigned (bp);
286 SET_DECL_INIT_PRIORITY (expr, p);
287 }
288}
289
290
291/* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
292 of expression EXPR from bitpack BP. */
293
294static void
295unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
296{
297 DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
298 BUILT_IN_LAST);
299 DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
300 DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
301 DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
302 DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
303 DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
304 DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
305 DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
306 DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
307 DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
308 DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
309 DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
310 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
311 = (unsigned) bp_unpack_value (bp, 1);
312 DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
313 DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
314 DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
315 DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
316 if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
317 {
318 DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
319 11);
320 if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
321 && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
322 fatal_error ("machine independent builtin code out of range");
323 else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
324 {
325 tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
326 if (!result || result == error_mark_node)
327 fatal_error ("target specific builtin not available");
328 }
329 }
330 if (DECL_STATIC_DESTRUCTOR (expr))
331 {
332 priority_type p;
333 p = (priority_type) bp_unpack_var_len_unsigned (bp);
334 SET_DECL_FINI_PRIORITY (expr, p);
335 }
336}
337
338
339/* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
340 of expression EXPR from bitpack BP. */
341
342static void
343unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
344{
345 enum machine_mode mode;
346
347 mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
348 SET_TYPE_MODE (expr, mode);
349 TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
350 TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
351 TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
352 if (RECORD_OR_UNION_TYPE_P (expr))
2d9cc481 353 {
354 TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
355 TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
356 }
f7fa455c 357 else if (TREE_CODE (expr) == ARRAY_TYPE)
358 TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
2541503d 359 TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
360 TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
2541503d 361 TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
362 TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
363 TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
364 TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
365 TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
366}
367
368
369/* Unpack all the non-pointer fields of the TS_BLOCK structure
370 of expression EXPR from bitpack BP. */
371
372static void
ec180527 373unpack_ts_block_value_fields (struct data_in *data_in,
374 struct bitpack_d *bp, tree expr)
2541503d 375{
376 BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
377 /* BLOCK_NUMBER is recomputed. */
ec180527 378 BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
2541503d 379}
380
381/* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
382 structure of expression EXPR from bitpack BP. */
383
384static void
07de37ab 385unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
386 struct bitpack_d *bp, tree expr)
2541503d 387{
07de37ab 388 TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
f1f41a6c 389 vec_safe_push (all_translation_units, expr);
2541503d 390}
391
51136fa7 392/* Unpack a TS_TARGET_OPTION tree from BP into EXPR. */
393
394static void
395unpack_ts_target_option (struct bitpack_d *bp, tree expr)
396{
397 unsigned i, len;
398 struct cl_target_option *t = TREE_TARGET_OPTION (expr);
399
400 len = sizeof (struct cl_target_option);
401 for (i = 0; i < len; i++)
402 ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
403 if (bp_unpack_value (bp, 32) != 0x12345678)
404 fatal_error ("cl_target_option size mismatch in LTO reader and writer");
405}
406
407/* Unpack a TS_OPTIMIZATION tree from BP into EXPR. */
408
409static void
410unpack_ts_optimization (struct bitpack_d *bp, tree expr)
411{
412 unsigned i, len;
413 struct cl_optimization *t = TREE_OPTIMIZATION (expr);
414
415 len = sizeof (struct cl_optimization);
416 for (i = 0; i < len; i++)
417 ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
418 if (bp_unpack_value (bp, 32) != 0x12345678)
419 fatal_error ("cl_optimization size mismatch in LTO reader and writer");
420}
421
422
2541503d 423/* Unpack all the non-pointer fields in EXPR into a bit pack. */
424
425static void
ec180527 426unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
2541503d 427{
428 enum tree_code code;
429
430 code = TREE_CODE (expr);
431
432 /* Note that all these functions are highly sensitive to changes in
433 the types and sizes of each of the fields being packed. */
434 unpack_ts_base_value_fields (bp, expr);
435
42603940 436 if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
437 unpack_ts_int_cst_value_fields (bp, expr);
438
2541503d 439 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
440 unpack_ts_real_cst_value_fields (bp, expr);
441
442 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
443 unpack_ts_fixed_cst_value_fields (bp, expr);
444
ec180527 445 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
446 DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
447
2541503d 448 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
449 unpack_ts_decl_common_value_fields (bp, expr);
450
451 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
452 unpack_ts_decl_wrtl_value_fields (bp, expr);
453
454 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
455 unpack_ts_decl_with_vis_value_fields (bp, expr);
456
457 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
458 unpack_ts_function_decl_value_fields (bp, expr);
459
460 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
461 unpack_ts_type_common_value_fields (bp, expr);
462
ec180527 463 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
464 SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
465
2541503d 466 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
ec180527 467 unpack_ts_block_value_fields (data_in, bp, expr);
2541503d 468
469 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
07de37ab 470 unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
51136fa7 471
472 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
473 unpack_ts_target_option (bp, expr);
474
475 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
476 unpack_ts_optimization (bp, expr);
e41fac10 477
478 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
479 {
480 unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
481 if (length > 0)
f1f41a6c 482 vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
e41fac10 483 }
484
485 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
486 {
487 unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
488 if (length > 0)
f1f41a6c 489 vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
e41fac10 490 }
515cf651 491}
492
493
494/* Read all the language-independent bitfield values for EXPR from IB.
495 Return the partially unpacked bitpack so the caller can unpack any other
496 bitfield values that the writer may have written. */
2541503d 497
515cf651 498struct bitpack_d
ec180527 499streamer_read_tree_bitfields (struct lto_input_block *ib,
500 struct data_in *data_in, tree expr)
515cf651 501{
502 enum tree_code code;
503 struct bitpack_d bp;
504
505 /* Read the bitpack of non-pointer values from IB. */
7f385784 506 bp = streamer_read_bitpack (ib);
515cf651 507
508 /* The first word in BP contains the code of the tree that we
509 are about to read. */
510 code = (enum tree_code) bp_unpack_value (&bp, 16);
511 lto_tag_check (lto_tree_code_to_tag (code),
512 lto_tree_code_to_tag (TREE_CODE (expr)));
513
514 /* Unpack all the value fields from BP. */
ec180527 515 unpack_value_fields (data_in, &bp, expr);
515cf651 516
517 return bp;
2541503d 518}
519
520
521/* Materialize a new tree from input block IB using descriptors in
522 DATA_IN. The code for the new tree should match TAG. Store in
523 *IX_P the index into the reader cache where the new tree is stored. */
524
515cf651 525tree
7f385784 526streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
527 enum LTO_tags tag)
2541503d 528{
2541503d 529 enum tree_code code;
530 tree result;
531#ifdef LTO_STREAMER_DEBUG
532 HOST_WIDEST_INT orig_address_in_writer;
533#endif
534
535 result = NULL_TREE;
536
537#ifdef LTO_STREAMER_DEBUG
538 /* Read the word representing the memory address for the tree
539 as it was written by the writer. This is useful when
540 debugging differences between the writer and reader. */
7f385784 541 orig_address_in_writer = streamer_read_hwi (ib);
2541503d 542 gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
543#endif
544
545 code = lto_tag_to_tree_code (tag);
546
547 /* We should never see an SSA_NAME tree. Only the version numbers of
548 SSA names are ever written out. See input_ssa_names. */
549 gcc_assert (code != SSA_NAME);
550
551 /* Instantiate a new tree using the header data. */
552 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
7f385784 553 result = streamer_read_string_cst (data_in, ib);
2541503d 554 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
555 result = input_identifier (data_in, ib);
556 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
557 {
7f385784 558 HOST_WIDE_INT len = streamer_read_hwi (ib);
2541503d 559 result = make_tree_vec (len);
560 }
fadf62f4 561 else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
562 {
563 HOST_WIDE_INT len = streamer_read_hwi (ib);
c7a1d251 564 result = make_vector (len);
fadf62f4 565 }
2541503d 566 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
567 {
7f385784 568 unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
2541503d 569 result = make_tree_binfo (len);
570 }
515cf651 571 else if (code == CALL_EXPR)
572 {
7f385784 573 unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
515cf651 574 return build_vl_exp (CALL_EXPR, nargs + 3);
575 }
2541503d 576 else
577 {
515cf651 578 /* For all other nodes, materialize the tree with a raw
2541503d 579 make_node call. */
515cf651 580 result = make_node (code);
2541503d 581 }
582
583#ifdef LTO_STREAMER_DEBUG
584 /* Store the original address of the tree as seen by the writer
585 in RESULT's aux field. This is useful when debugging streaming
586 problems. This way, a debugging session can be started on
587 both writer and reader with a breakpoint using this address
588 value in both. */
589 lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
590#endif
591
2541503d 592 return result;
593}
594
595
596/* Read all pointer fields in the TS_COMMON structure of EXPR from input
597 block IB. DATA_IN contains tables and descriptors for the
598 file being read. */
599
600
601static void
602lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
603 struct data_in *data_in, tree expr)
604{
605 if (TREE_CODE (expr) != IDENTIFIER_NODE)
515cf651 606 TREE_TYPE (expr) = stream_read_tree (ib, data_in);
2541503d 607}
608
609
610/* Read all pointer fields in the TS_VECTOR structure of EXPR from input
611 block IB. DATA_IN contains tables and descriptors for the
612 file being read. */
613
614static void
615lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
616 struct data_in *data_in, tree expr)
617{
fadf62f4 618 unsigned i;
619 for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
620 VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
2541503d 621}
622
623
624/* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
625 block IB. DATA_IN contains tables and descriptors for the
626 file being read. */
627
628static void
629lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
630 struct data_in *data_in, tree expr)
631{
515cf651 632 TREE_REALPART (expr) = stream_read_tree (ib, data_in);
633 TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
2541503d 634}
635
636
637/* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
638 from input block IB. DATA_IN contains tables and descriptors for the
639 file being read. */
640
641static void
642lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
643 struct data_in *data_in, tree expr)
644{
515cf651 645 DECL_NAME (expr) = stream_read_tree (ib, data_in);
646 DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
2541503d 647}
648
649
650/* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
651 input block IB. DATA_IN contains tables and descriptors for the
652 file being read. */
653
654static void
655lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
656 struct data_in *data_in, tree expr)
657{
515cf651 658 DECL_SIZE (expr) = stream_read_tree (ib, data_in);
659 DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
660 DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
2541503d 661
662 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
663 for early inlining so drop it on the floor instead of ICEing in
664 dwarf2out.c. */
665
2541503d 666 if ((TREE_CODE (expr) == VAR_DECL
667 || TREE_CODE (expr) == PARM_DECL)
668 && DECL_HAS_VALUE_EXPR_P (expr))
515cf651 669 SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
2541503d 670
671 if (TREE_CODE (expr) == VAR_DECL)
672 {
515cf651 673 tree dexpr = stream_read_tree (ib, data_in);
2541503d 674 if (dexpr)
675 SET_DECL_DEBUG_EXPR (expr, dexpr);
676 }
677}
678
679
680/* Read all pointer fields in the TS_DECL_NON_COMMON structure of
681 EXPR from input block IB. DATA_IN contains tables and descriptors for the
682 file being read. */
683
684static void
685lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
686 struct data_in *data_in, tree expr)
687{
4df870fd 688 if (TREE_CODE (expr) == TYPE_DECL)
6cd6787c 689 DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
515cf651 690 DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
2541503d 691}
692
693
694/* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
695 from input block IB. DATA_IN contains tables and descriptors for the
696 file being read. */
697
698static void
699lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
700 struct data_in *data_in, tree expr)
701{
702 tree id;
703
515cf651 704 id = stream_read_tree (ib, data_in);
2541503d 705 if (id)
706 {
707 gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
708 SET_DECL_ASSEMBLER_NAME (expr, id);
709 }
710
515cf651 711 DECL_SECTION_NAME (expr) = stream_read_tree (ib, data_in);
712 DECL_COMDAT_GROUP (expr) = stream_read_tree (ib, data_in);
2541503d 713}
714
715
716/* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
717 input block IB. DATA_IN contains tables and descriptors for the
718 file being read. */
719
720static void
721lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
722 struct data_in *data_in, tree expr)
723{
515cf651 724 DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
725 DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
8d8a34f9 726 DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
515cf651 727 DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
728 DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
2541503d 729}
730
731
732/* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
733 from input block IB. DATA_IN contains tables and descriptors for the
734 file being read. */
735
736static void
737lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
738 struct data_in *data_in, tree expr)
739{
740 /* DECL_STRUCT_FUNCTION is handled by lto_input_function. FIXME lto,
741 maybe it should be handled here? */
515cf651 742 DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
743 DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
744 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
2541503d 745
746 /* If the file contains a function with an EH personality set,
747 then it was compiled with -fexceptions. In that case, initialize
748 the backend EH machinery. */
749 if (DECL_FUNCTION_PERSONALITY (expr))
750 lto_init_eh ();
751}
752
753
754/* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
755 input block IB. DATA_IN contains tables and descriptors for the file
756 being read. */
757
758static void
759lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
760 struct data_in *data_in, tree expr)
761{
515cf651 762 TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
763 TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
764 TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
765 TYPE_NAME (expr) = stream_read_tree (ib, data_in);
2541503d 766 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
767 reconstructed during fixup. */
768 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
769 during fixup. */
515cf651 770 TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
771 TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
2541503d 772 /* TYPE_CANONICAL gets re-computed during type merging. */
773 TYPE_CANONICAL (expr) = NULL_TREE;
515cf651 774 TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
2541503d 775}
776
777/* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
778 from input block IB. DATA_IN contains tables and descriptors for the
779 file being read. */
780
781static void
782lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
783 struct data_in *data_in,
784 tree expr)
785{
786 if (TREE_CODE (expr) == ENUMERAL_TYPE)
515cf651 787 TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
2541503d 788 else if (TREE_CODE (expr) == ARRAY_TYPE)
515cf651 789 TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
2541503d 790 else if (RECORD_OR_UNION_TYPE_P (expr))
93784f3f 791 TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
2541503d 792 else if (TREE_CODE (expr) == FUNCTION_TYPE
793 || TREE_CODE (expr) == METHOD_TYPE)
515cf651 794 TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
2541503d 795
796 if (!POINTER_TYPE_P (expr))
515cf651 797 TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
798 TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
2541503d 799 if (RECORD_OR_UNION_TYPE_P (expr))
515cf651 800 TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
2541503d 801}
802
803
804/* Read all pointer fields in the TS_LIST structure of EXPR from input
805 block IB. DATA_IN contains tables and descriptors for the
806 file being read. */
807
808static void
809lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
810 struct data_in *data_in, tree expr)
811{
515cf651 812 TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
813 TREE_VALUE (expr) = stream_read_tree (ib, data_in);
8ceff600 814 TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
2541503d 815}
816
817
818/* Read all pointer fields in the TS_VEC structure of EXPR from input
819 block IB. DATA_IN contains tables and descriptors for the
820 file being read. */
821
822static void
823lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
824 struct data_in *data_in, tree expr)
825{
826 int i;
827
7f385784 828 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
2541503d 829 instantiate EXPR. */
830 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
515cf651 831 TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
2541503d 832}
833
834
835/* Read all pointer fields in the TS_EXP structure of EXPR from input
836 block IB. DATA_IN contains tables and descriptors for the
837 file being read. */
838
839
840static void
841lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
842 struct data_in *data_in, tree expr)
843{
e41fac10 844 int i;
2541503d 845
e41fac10 846 for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
515cf651 847 TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
2541503d 848
5169661d 849 TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
2541503d 850}
851
852
853/* Read all pointer fields in the TS_BLOCK structure of EXPR from input
854 block IB. DATA_IN contains tables and descriptors for the
855 file being read. */
856
857static void
858lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
859 struct data_in *data_in, tree expr)
860{
7f385784 861 BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
2541503d 862
515cf651 863 BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
2541503d 864
ae52f82e 865 /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
866 the limited cases we can handle - those that represent inlined
867 function scopes. For the rest them on the floor instead of ICEing in
2541503d 868 dwarf2out.c. */
ae52f82e 869 BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
ae52f82e 870 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
871 for early inlined BLOCKs so drop it on the floor instead of ICEing in
872 dwarf2out.c. */
873
874 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
875 streaming time. */
2541503d 876
877 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
878 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
879 stream the child relationship explicitly. */
880 if (BLOCK_SUPERCONTEXT (expr)
881 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
882 {
883 BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
884 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
885 }
886
887 /* The global block is rooted at the TU decl. Hook it here to
888 avoid the need to stream in this block during WPA time. */
889 else if (BLOCK_SUPERCONTEXT (expr)
890 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
891 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
892
893 /* The function-level block is connected at the time we read in
894 function bodies for the same reason. */
895}
896
897
898/* Read all pointer fields in the TS_BINFO structure of EXPR from input
899 block IB. DATA_IN contains tables and descriptors for the
900 file being read. */
901
902static void
903lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
904 struct data_in *data_in, tree expr)
905{
e41fac10 906 unsigned i;
2541503d 907 tree t;
908
909 /* Note that the number of slots in EXPR was read in
7f385784 910 streamer_alloc_tree when instantiating EXPR. However, the
f1f41a6c 911 vector is empty so we cannot rely on vec::length to know how many
2541503d 912 elements to read. So, this list is emitted as a 0-terminated
913 list on the writer side. */
914 do
915 {
515cf651 916 t = stream_read_tree (ib, data_in);
2541503d 917 if (t)
f1f41a6c 918 BINFO_BASE_BINFOS (expr)->quick_push (t);
2541503d 919 }
920 while (t);
921
515cf651 922 BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
923 BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
515cf651 924 BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
2541503d 925
e41fac10 926 /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
927 unpacking the bitfield section. */
f1f41a6c 928 for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
2541503d 929 {
e41fac10 930 tree a = stream_read_tree (ib, data_in);
f1f41a6c 931 (*BINFO_BASE_ACCESSES (expr))[i] = a;
2541503d 932 }
c8bc3818 933 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
934 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
2541503d 935}
936
937
938/* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
939 input block IB. DATA_IN contains tables and descriptors for the
940 file being read. */
941
942static void
943lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
944 struct data_in *data_in, tree expr)
945{
e41fac10 946 unsigned i;
2541503d 947
e41fac10 948 for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
2541503d 949 {
e41fac10 950 constructor_elt e;
951 e.index = stream_read_tree (ib, data_in);
952 e.value = stream_read_tree (ib, data_in);
f1f41a6c 953 (*CONSTRUCTOR_ELTS (expr))[i] = e;
2541503d 954 }
955}
956
957
515cf651 958/* Read all pointer fields in EXPR from input block IB. DATA_IN
959 contains tables and descriptors for the file being read. */
2541503d 960
515cf651 961void
7f385784 962streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
2541503d 963 tree expr)
964{
965 enum tree_code code;
966
967 code = TREE_CODE (expr);
968
969 if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
970 lto_input_ts_common_tree_pointers (ib, data_in, expr);
971
972 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
973 lto_input_ts_vector_tree_pointers (ib, data_in, expr);
974
975 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
976 lto_input_ts_complex_tree_pointers (ib, data_in, expr);
977
978 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
979 lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
980
981 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
982 lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
983
984 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
985 lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
986
987 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
988 lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
989
990 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
991 lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
992
993 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
994 lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
995
996 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
997 lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
998
999 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1000 lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1001
1002 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1003 lto_input_ts_list_tree_pointers (ib, data_in, expr);
1004
1005 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1006 lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1007
1008 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1009 lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1010
1011 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1012 lto_input_ts_block_tree_pointers (ib, data_in, expr);
1013
1014 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1015 lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1016
1017 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1018 lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
2541503d 1019}
1020
1021
2541503d 1022/* Read an index IX from input block IB and return the tree node at
1023 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1024
515cf651 1025tree
7f385784 1026streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
2541503d 1027{
1028 unsigned HOST_WIDE_INT ix;
1029 tree result;
1030 enum LTO_tags expected_tag;
1031
7f385784 1032 ix = streamer_read_uhwi (ib);
1033 expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
2541503d 1034
8ceff600 1035 result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
2541503d 1036 gcc_assert (result
1037 && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1038
1039 return result;
1040}
1041
1042
1043/* Read a code and class from input block IB and return the
515cf651 1044 corresponding builtin. DATA_IN is as in stream_read_tree. */
2541503d 1045
515cf651 1046tree
7f385784 1047streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
2541503d 1048{
1049 enum built_in_class fclass;
1050 enum built_in_function fcode;
1051 const char *asmname;
1052 tree result;
1053
7f385784 1054 fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
2541503d 1055 gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1056
7f385784 1057 fcode = (enum built_in_function) streamer_read_uhwi (ib);
2541503d 1058
1059 if (fclass == BUILT_IN_NORMAL)
1060 {
1061 if (fcode >= END_BUILTINS)
1062 fatal_error ("machine independent builtin code out of range");
b9a16870 1063 result = builtin_decl_explicit (fcode);
2541503d 1064 gcc_assert (result);
1065 }
1066 else if (fclass == BUILT_IN_MD)
1067 {
1068 result = targetm.builtin_decl (fcode, true);
1069 if (!result || result == error_mark_node)
1070 fatal_error ("target specific builtin not available");
1071 }
1072 else
1073 gcc_unreachable ();
1074
7f385784 1075 asmname = streamer_read_string (data_in, ib);
2541503d 1076 if (asmname)
1077 set_builtin_user_assembler_name (result, asmname);
1078
8ceff600 1079 streamer_tree_cache_append (data_in->reader_cache, result, 0);
2541503d 1080
1081 return result;
1082}
Mirror of https://gcc.gnu.org/git/gcc.git