Upgrade GCC from 4.7.2 to 4.7.3 on the vendor branch
[dragonfly.git] / contrib / gcc-4.7 / gcc / tree-streamer-in.c
CommitLineData
e4b17023
JM
1/* Routines for reading trees from a file stream.
2
3 Copyright 2011 Free Software Foundation, Inc.
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"
27#include "tree-flow.h"
28#include "tree-streamer.h"
29#include "data-streamer.h"
30#include "streamer-hooks.h"
31#include "lto-streamer.h"
32
33/* Read a STRING_CST from the string table in DATA_IN using input
34 block IB. */
35
36tree
37streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
38{
39 unsigned int len;
40 const char * ptr;
41
42 ptr = streamer_read_indexed_string (data_in, ib, &len);
43 if (!ptr)
44 return NULL;
45 return build_string (len, ptr);
46}
47
48
49/* Read an IDENTIFIER from the string table in DATA_IN using input
50 block IB. */
51
52static tree
53input_identifier (struct data_in *data_in, struct lto_input_block *ib)
54{
55 unsigned int len;
56 const char *ptr;
57
58 ptr = streamer_read_indexed_string (data_in, ib, &len);
59 if (!ptr)
60 return NULL;
61 return get_identifier_with_length (ptr, len);
62}
63
64
65/* Read a chain of tree nodes from input block IB. DATA_IN contains
66 tables and descriptors for the file being read. */
67
68tree
69streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
70{
71 int i, count;
72 tree first, prev, curr;
73
74 first = prev = NULL_TREE;
75 count = streamer_read_hwi (ib);
76 for (i = 0; i < count; i++)
77 {
78 curr = stream_read_tree (ib, data_in);
79 if (prev)
80 TREE_CHAIN (prev) = curr;
81 else
82 first = curr;
83
84 TREE_CHAIN (curr) = NULL_TREE;
85 prev = curr;
86 }
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
99 streamer_alloc_tree. */
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);
126 TREE_USED (expr) = (unsigned) bp_unpack_value (bp, 1);
127 TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
128 TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
129 TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
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))
133 {
134 TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
135 TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
136 }
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
144/* Unpack all the non-pointer fields of the TS_REAL_CST structure of
145 expression EXPR from bitpack BP. */
146
147static void
148unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
149{
150 unsigned i;
151 REAL_VALUE_TYPE r;
152 REAL_VALUE_TYPE *rp;
153
154 r.cl = (unsigned) bp_unpack_value (bp, 2);
155 r.decimal = (unsigned) bp_unpack_value (bp, 1);
156 r.sign = (unsigned) bp_unpack_value (bp, 1);
157 r.signalling = (unsigned) bp_unpack_value (bp, 1);
158 r.canonical = (unsigned) bp_unpack_value (bp, 1);
159 r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
160 for (i = 0; i < SIGSZ; i++)
161 r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
162
163 rp = ggc_alloc_real_value ();
164 memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
165 TREE_REAL_CST_PTR (expr) = rp;
166}
167
168
169/* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
170 expression EXPR from bitpack BP. */
171
172static void
173unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
174{
175 struct fixed_value fv;
176
177 fv.mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
178 fv.data.low = bp_unpack_var_len_int (bp);
179 fv.data.high = bp_unpack_var_len_int (bp);
180 TREE_FIXED_CST (expr) = fv;
181}
182
183
184/* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
185 of expression EXPR from bitpack BP. */
186
187static void
188unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
189{
190 DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
191 DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
192 DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
193 DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
194 DECL_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
195 DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
196 DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
197 DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
198 DECL_DEBUG_EXPR_IS_FROM (expr) = (unsigned) bp_unpack_value (bp, 1);
199 DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
200 DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
201 DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
202
203 if (TREE_CODE (expr) == LABEL_DECL)
204 {
205 DECL_ERROR_ISSUED (expr) = (unsigned) bp_unpack_value (bp, 1);
206 EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
207
208 /* Always assume an initial value of -1 for LABEL_DECL_UID to
209 force gimple_set_bb to recreate label_to_block_map. */
210 LABEL_DECL_UID (expr) = -1;
211 }
212
213 if (TREE_CODE (expr) == FIELD_DECL)
214 {
215 DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
216 DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
217 expr->decl_common.off_align = bp_unpack_value (bp, 8);
218 }
219
220 if (TREE_CODE (expr) == RESULT_DECL
221 || TREE_CODE (expr) == PARM_DECL
222 || TREE_CODE (expr) == VAR_DECL)
223 {
224 DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
225 if (TREE_CODE (expr) == VAR_DECL
226 || TREE_CODE (expr) == PARM_DECL)
227 DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
228 DECL_RESTRICTED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
229 }
230}
231
232
233/* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
234 of expression EXPR from bitpack BP. */
235
236static void
237unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
238{
239 DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
240}
241
242
243/* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
244 of expression EXPR from bitpack BP. */
245
246static void
247unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
248{
249 DECL_DEFER_OUTPUT (expr) = (unsigned) bp_unpack_value (bp, 1);
250 DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
251 DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
252 DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
253 DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
254 DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp, 1);
255 DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp, 2);
256 DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp, 1);
257
258 if (TREE_CODE (expr) == VAR_DECL)
259 {
260 DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
261 DECL_IN_TEXT_SECTION (expr) = (unsigned) bp_unpack_value (bp, 1);
262 DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
263 DECL_TLS_MODEL (expr) = (enum tls_model) bp_unpack_value (bp, 3);
264 }
265
266 if (VAR_OR_FUNCTION_DECL_P (expr))
267 {
268 priority_type p;
269 p = (priority_type) bp_unpack_var_len_unsigned (bp);
270 SET_DECL_INIT_PRIORITY (expr, p);
271 }
272}
273
274
275/* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
276 of expression EXPR from bitpack BP. */
277
278static void
279unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
280{
281 DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
282 BUILT_IN_LAST);
283 DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
284 DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
285 DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
286 DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
287 DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
288 DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
289 DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
290 DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
291 DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
292 DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
293 DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
294 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
295 = (unsigned) bp_unpack_value (bp, 1);
296 DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
297 DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
298 DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
299 DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
300 if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
301 {
302 DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
303 11);
304 if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
305 && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
306 fatal_error ("machine independent builtin code out of range");
307 else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
308 {
309 tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
310 if (!result || result == error_mark_node)
311 fatal_error ("target specific builtin not available");
312 }
313 }
314 if (DECL_STATIC_DESTRUCTOR (expr))
315 {
316 priority_type p;
317 p = (priority_type) bp_unpack_var_len_unsigned (bp);
318 SET_DECL_FINI_PRIORITY (expr, p);
319 }
320}
321
322
323/* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
324 of expression EXPR from bitpack BP. */
325
326static void
327unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
328{
329 enum machine_mode mode;
330
331 mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
332 SET_TYPE_MODE (expr, mode);
333 TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
334 TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
335 TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
336 if (RECORD_OR_UNION_TYPE_P (expr))
337 TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
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JM
338 else if (TREE_CODE (expr) == ARRAY_TYPE)
339 TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
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JM
340 TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
341 TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
342 TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr)
343 = (unsigned) bp_unpack_value (bp, 2);
344 TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
345 TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
346 TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
347 TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
348 TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
349}
350
351
352/* Unpack all the non-pointer fields of the TS_BLOCK structure
353 of expression EXPR from bitpack BP. */
354
355static void
356unpack_ts_block_value_fields (struct bitpack_d *bp, tree expr)
357{
358 BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
359 /* BLOCK_NUMBER is recomputed. */
360}
361
362/* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
363 structure of expression EXPR from bitpack BP. */
364
365static void
366unpack_ts_translation_unit_decl_value_fields (struct bitpack_d *bp ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
367{
368}
369
370/* Unpack all the non-pointer fields in EXPR into a bit pack. */
371
372static void
373unpack_value_fields (struct bitpack_d *bp, tree expr)
374{
375 enum tree_code code;
376
377 code = TREE_CODE (expr);
378
379 /* Note that all these functions are highly sensitive to changes in
380 the types and sizes of each of the fields being packed. */
381 unpack_ts_base_value_fields (bp, expr);
382
383 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
384 unpack_ts_real_cst_value_fields (bp, expr);
385
386 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
387 unpack_ts_fixed_cst_value_fields (bp, expr);
388
389 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
390 unpack_ts_decl_common_value_fields (bp, expr);
391
392 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
393 unpack_ts_decl_wrtl_value_fields (bp, expr);
394
395 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
396 unpack_ts_decl_with_vis_value_fields (bp, expr);
397
398 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
399 unpack_ts_function_decl_value_fields (bp, expr);
400
401 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
402 unpack_ts_type_common_value_fields (bp, expr);
403
404 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
405 unpack_ts_block_value_fields (bp, expr);
406
407 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
408 unpack_ts_translation_unit_decl_value_fields (bp, expr);
409}
410
411
412/* Read all the language-independent bitfield values for EXPR from IB.
413 Return the partially unpacked bitpack so the caller can unpack any other
414 bitfield values that the writer may have written. */
415
416struct bitpack_d
417streamer_read_tree_bitfields (struct lto_input_block *ib, tree expr)
418{
419 enum tree_code code;
420 struct bitpack_d bp;
421
422 /* Read the bitpack of non-pointer values from IB. */
423 bp = streamer_read_bitpack (ib);
424
425 /* The first word in BP contains the code of the tree that we
426 are about to read. */
427 code = (enum tree_code) bp_unpack_value (&bp, 16);
428 lto_tag_check (lto_tree_code_to_tag (code),
429 lto_tree_code_to_tag (TREE_CODE (expr)));
430
431 /* Unpack all the value fields from BP. */
432 unpack_value_fields (&bp, expr);
433
434 return bp;
435}
436
437
438/* Materialize a new tree from input block IB using descriptors in
439 DATA_IN. The code for the new tree should match TAG. Store in
440 *IX_P the index into the reader cache where the new tree is stored. */
441
442tree
443streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
444 enum LTO_tags tag)
445{
446 enum tree_code code;
447 tree result;
448#ifdef LTO_STREAMER_DEBUG
449 HOST_WIDEST_INT orig_address_in_writer;
450#endif
451
452 result = NULL_TREE;
453
454#ifdef LTO_STREAMER_DEBUG
455 /* Read the word representing the memory address for the tree
456 as it was written by the writer. This is useful when
457 debugging differences between the writer and reader. */
458 orig_address_in_writer = streamer_read_hwi (ib);
459 gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
460#endif
461
462 code = lto_tag_to_tree_code (tag);
463
464 /* We should never see an SSA_NAME tree. Only the version numbers of
465 SSA names are ever written out. See input_ssa_names. */
466 gcc_assert (code != SSA_NAME);
467
468 /* Instantiate a new tree using the header data. */
469 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
470 result = streamer_read_string_cst (data_in, ib);
471 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
472 result = input_identifier (data_in, ib);
473 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
474 {
475 HOST_WIDE_INT len = streamer_read_hwi (ib);
476 result = make_tree_vec (len);
477 }
478 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
479 {
480 unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
481 result = make_tree_binfo (len);
482 }
483 else if (code == CALL_EXPR)
484 {
485 unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
486 return build_vl_exp (CALL_EXPR, nargs + 3);
487 }
488 else
489 {
490 /* For all other nodes, materialize the tree with a raw
491 make_node call. */
492 result = make_node (code);
493 }
494
495#ifdef LTO_STREAMER_DEBUG
496 /* Store the original address of the tree as seen by the writer
497 in RESULT's aux field. This is useful when debugging streaming
498 problems. This way, a debugging session can be started on
499 both writer and reader with a breakpoint using this address
500 value in both. */
501 lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
502#endif
503
504 return result;
505}
506
507
508/* Read all pointer fields in the TS_COMMON structure of EXPR from input
509 block IB. DATA_IN contains tables and descriptors for the
510 file being read. */
511
512
513static void
514lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
515 struct data_in *data_in, tree expr)
516{
517 if (TREE_CODE (expr) != IDENTIFIER_NODE)
518 TREE_TYPE (expr) = stream_read_tree (ib, data_in);
519}
520
521
522/* Read all pointer fields in the TS_VECTOR structure of EXPR from input
523 block IB. DATA_IN contains tables and descriptors for the
524 file being read. */
525
526static void
527lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
528 struct data_in *data_in, tree expr)
529{
530 TREE_VECTOR_CST_ELTS (expr) = streamer_read_chain (ib, data_in);
531}
532
533
534/* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
535 block IB. DATA_IN contains tables and descriptors for the
536 file being read. */
537
538static void
539lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
540 struct data_in *data_in, tree expr)
541{
542 TREE_REALPART (expr) = stream_read_tree (ib, data_in);
543 TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
544}
545
546
547/* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
548 from input block IB. DATA_IN contains tables and descriptors for the
549 file being read. */
550
551static void
552lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
553 struct data_in *data_in, tree expr)
554{
555 DECL_NAME (expr) = stream_read_tree (ib, data_in);
556 DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
557 DECL_SOURCE_LOCATION (expr) = lto_input_location (ib, data_in);
558}
559
560
561/* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
562 input block IB. DATA_IN contains tables and descriptors for the
563 file being read. */
564
565static void
566lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
567 struct data_in *data_in, tree expr)
568{
569 DECL_SIZE (expr) = stream_read_tree (ib, data_in);
570 DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
571 DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
572
573 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
574 for early inlining so drop it on the floor instead of ICEing in
575 dwarf2out.c. */
576
577 if (TREE_CODE (expr) == PARM_DECL)
578 TREE_CHAIN (expr) = streamer_read_chain (ib, data_in);
579
580 if ((TREE_CODE (expr) == VAR_DECL
581 || TREE_CODE (expr) == PARM_DECL)
582 && DECL_HAS_VALUE_EXPR_P (expr))
583 SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
584
585 if (TREE_CODE (expr) == VAR_DECL)
586 {
587 tree dexpr = stream_read_tree (ib, data_in);
588 if (dexpr)
589 SET_DECL_DEBUG_EXPR (expr, dexpr);
590 }
591}
592
593
594/* Read all pointer fields in the TS_DECL_NON_COMMON structure of
595 EXPR from input block IB. DATA_IN contains tables and descriptors for the
596 file being read. */
597
598static void
599lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
600 struct data_in *data_in, tree expr)
601{
602 if (TREE_CODE (expr) == FUNCTION_DECL)
603 {
604 DECL_ARGUMENTS (expr) = stream_read_tree (ib, data_in);
605 DECL_RESULT (expr) = stream_read_tree (ib, data_in);
606 }
607 else if (TREE_CODE (expr) == TYPE_DECL)
608 DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
609 DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
610}
611
612
613/* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
614 from input block IB. DATA_IN contains tables and descriptors for the
615 file being read. */
616
617static void
618lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
619 struct data_in *data_in, tree expr)
620{
621 tree id;
622
623 id = stream_read_tree (ib, data_in);
624 if (id)
625 {
626 gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
627 SET_DECL_ASSEMBLER_NAME (expr, id);
628 }
629
630 DECL_SECTION_NAME (expr) = stream_read_tree (ib, data_in);
631 DECL_COMDAT_GROUP (expr) = stream_read_tree (ib, data_in);
632}
633
634
635/* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
636 input block IB. DATA_IN contains tables and descriptors for the
637 file being read. */
638
639static void
640lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
641 struct data_in *data_in, tree expr)
642{
643 DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
644 DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
645 DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
646 DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
647 DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
648}
649
650
651/* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
652 from input block IB. DATA_IN contains tables and descriptors for the
653 file being read. */
654
655static void
656lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
657 struct data_in *data_in, tree expr)
658{
659 /* DECL_STRUCT_FUNCTION is handled by lto_input_function. FIXME lto,
660 maybe it should be handled here? */
661 DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
662 DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
663 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
664
665 /* If the file contains a function with an EH personality set,
666 then it was compiled with -fexceptions. In that case, initialize
667 the backend EH machinery. */
668 if (DECL_FUNCTION_PERSONALITY (expr))
669 lto_init_eh ();
670}
671
672
673/* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
674 input block IB. DATA_IN contains tables and descriptors for the file
675 being read. */
676
677static void
678lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
679 struct data_in *data_in, tree expr)
680{
681 TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
682 TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
683 TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
684 TYPE_NAME (expr) = stream_read_tree (ib, data_in);
685 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
686 reconstructed during fixup. */
687 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
688 during fixup. */
689 TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
690 TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
691 /* TYPE_CANONICAL gets re-computed during type merging. */
692 TYPE_CANONICAL (expr) = NULL_TREE;
693 TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
694}
695
696/* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
697 from input block IB. DATA_IN contains tables and descriptors for the
698 file being read. */
699
700static void
701lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
702 struct data_in *data_in,
703 tree expr)
704{
705 if (TREE_CODE (expr) == ENUMERAL_TYPE)
706 TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
707 else if (TREE_CODE (expr) == ARRAY_TYPE)
708 TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
709 else if (RECORD_OR_UNION_TYPE_P (expr))
710 TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
711 else if (TREE_CODE (expr) == FUNCTION_TYPE
712 || TREE_CODE (expr) == METHOD_TYPE)
713 TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
714
715 if (!POINTER_TYPE_P (expr))
716 TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
717 TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
718 if (RECORD_OR_UNION_TYPE_P (expr))
719 TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
720}
721
722
723/* Read all pointer fields in the TS_LIST structure of EXPR from input
724 block IB. DATA_IN contains tables and descriptors for the
725 file being read. */
726
727static void
728lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
729 struct data_in *data_in, tree expr)
730{
731 TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
732 TREE_VALUE (expr) = stream_read_tree (ib, data_in);
733 TREE_CHAIN (expr) = streamer_read_chain (ib, data_in);
734}
735
736
737/* Read all pointer fields in the TS_VEC structure of EXPR from input
738 block IB. DATA_IN contains tables and descriptors for the
739 file being read. */
740
741static void
742lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
743 struct data_in *data_in, tree expr)
744{
745 int i;
746
747 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
748 instantiate EXPR. */
749 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
750 TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
751}
752
753
754/* Read all pointer fields in the TS_EXP structure of EXPR from input
755 block IB. DATA_IN contains tables and descriptors for the
756 file being read. */
757
758
759static void
760lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
761 struct data_in *data_in, tree expr)
762{
763 int i, length;
764 location_t loc;
765
766 length = streamer_read_hwi (ib);
767 gcc_assert (length == TREE_OPERAND_LENGTH (expr));
768
769 for (i = 0; i < length; i++)
770 TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
771
772 loc = lto_input_location (ib, data_in);
773 SET_EXPR_LOCATION (expr, loc);
774 TREE_BLOCK (expr) = stream_read_tree (ib, data_in);
775}
776
777
778/* Read all pointer fields in the TS_BLOCK structure of EXPR from input
779 block IB. DATA_IN contains tables and descriptors for the
780 file being read. */
781
782static void
783lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
784 struct data_in *data_in, tree expr)
785{
786 /* Do not stream BLOCK_SOURCE_LOCATION. We cannot handle debug information
787 for early inlining so drop it on the floor instead of ICEing in
788 dwarf2out.c. */
789 BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
790
791 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
792 for early inlining so drop it on the floor instead of ICEing in
793 dwarf2out.c. */
794
795 BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
796
797 /* Do not stream BLOCK_ABSTRACT_ORIGIN. We cannot handle debug information
798 for early inlining so drop it on the floor instead of ICEing in
799 dwarf2out.c. */
800 BLOCK_FRAGMENT_ORIGIN (expr) = stream_read_tree (ib, data_in);
801 BLOCK_FRAGMENT_CHAIN (expr) = stream_read_tree (ib, data_in);
802
803 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
804 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
805 stream the child relationship explicitly. */
806 if (BLOCK_SUPERCONTEXT (expr)
807 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
808 {
809 BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
810 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
811 }
812
813 /* The global block is rooted at the TU decl. Hook it here to
814 avoid the need to stream in this block during WPA time. */
815 else if (BLOCK_SUPERCONTEXT (expr)
816 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
817 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
818
819 /* The function-level block is connected at the time we read in
820 function bodies for the same reason. */
821}
822
823
824/* Read all pointer fields in the TS_BINFO structure of EXPR from input
825 block IB. DATA_IN contains tables and descriptors for the
826 file being read. */
827
828static void
829lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
830 struct data_in *data_in, tree expr)
831{
832 unsigned i, len;
833 tree t;
834
835 /* Note that the number of slots in EXPR was read in
836 streamer_alloc_tree when instantiating EXPR. However, the
837 vector is empty so we cannot rely on VEC_length to know how many
838 elements to read. So, this list is emitted as a 0-terminated
839 list on the writer side. */
840 do
841 {
842 t = stream_read_tree (ib, data_in);
843 if (t)
844 VEC_quick_push (tree, BINFO_BASE_BINFOS (expr), t);
845 }
846 while (t);
847
848 BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
849 BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
850 BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
851
852 len = streamer_read_uhwi (ib);
853 if (len > 0)
854 {
855 VEC_reserve_exact (tree, gc, BINFO_BASE_ACCESSES (expr), len);
856 for (i = 0; i < len; i++)
857 {
858 tree a = stream_read_tree (ib, data_in);
859 VEC_quick_push (tree, BINFO_BASE_ACCESSES (expr), a);
860 }
861 }
862
863 BINFO_INHERITANCE_CHAIN (expr) = stream_read_tree (ib, data_in);
864 BINFO_SUBVTT_INDEX (expr) = stream_read_tree (ib, data_in);
865 BINFO_VPTR_INDEX (expr) = stream_read_tree (ib, data_in);
866}
867
868
869/* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
870 input block IB. DATA_IN contains tables and descriptors for the
871 file being read. */
872
873static void
874lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
875 struct data_in *data_in, tree expr)
876{
877 unsigned i, len;
878
879 len = streamer_read_uhwi (ib);
880 for (i = 0; i < len; i++)
881 {
882 tree index, value;
883
884 index = stream_read_tree (ib, data_in);
885 value = stream_read_tree (ib, data_in);
886 CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (expr), index, value);
887 }
888}
889
890
891/* Input a TS_TARGET_OPTION tree from IB into EXPR. */
892
893static void
894lto_input_ts_target_option (struct lto_input_block *ib, tree expr)
895{
896 unsigned i, len;
897 struct bitpack_d bp;
898 struct cl_target_option *t = TREE_TARGET_OPTION (expr);
899
900 bp = streamer_read_bitpack (ib);
901 len = sizeof (struct cl_target_option);
902 for (i = 0; i < len; i++)
903 ((unsigned char *)t)[i] = bp_unpack_value (&bp, 8);
904 if (bp_unpack_value (&bp, 32) != 0x12345678)
905 fatal_error ("cl_target_option size mismatch in LTO reader and writer");
906}
907
908/* Input a TS_OPTIMIZATION tree from IB into EXPR. */
909
910static void
911lto_input_ts_optimization (struct lto_input_block *ib, tree expr)
912{
913 unsigned i, len;
914 struct bitpack_d bp;
915 struct cl_optimization *t = TREE_OPTIMIZATION (expr);
916
917 bp = streamer_read_bitpack (ib);
918 len = sizeof (struct cl_optimization);
919 for (i = 0; i < len; i++)
920 ((unsigned char *)t)[i] = bp_unpack_value (&bp, 8);
921 if (bp_unpack_value (&bp, 32) != 0x12345678)
922 fatal_error ("cl_optimization size mismatch in LTO reader and writer");
923}
924
925/* Input a TS_TRANSLATION_UNIT_DECL tree from IB and DATA_IN into EXPR. */
926
927static void
928lto_input_ts_translation_unit_decl_tree_pointers (struct lto_input_block *ib,
929 struct data_in *data_in,
930 tree expr)
931{
932 TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (streamer_read_string (data_in, ib));
933 VEC_safe_push (tree, gc, all_translation_units, expr);
934}
935
936/* Read all pointer fields in EXPR from input block IB. DATA_IN
937 contains tables and descriptors for the file being read. */
938
939void
940streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
941 tree expr)
942{
943 enum tree_code code;
944
945 code = TREE_CODE (expr);
946
947 if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
948 lto_input_ts_common_tree_pointers (ib, data_in, expr);
949
950 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
951 lto_input_ts_vector_tree_pointers (ib, data_in, expr);
952
953 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
954 lto_input_ts_complex_tree_pointers (ib, data_in, expr);
955
956 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
957 lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
958
959 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
960 lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
961
962 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
963 lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
964
965 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
966 lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
967
968 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
969 lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
970
971 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
972 lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
973
974 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
975 lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
976
977 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
978 lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
979
980 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
981 lto_input_ts_list_tree_pointers (ib, data_in, expr);
982
983 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
984 lto_input_ts_vec_tree_pointers (ib, data_in, expr);
985
986 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
987 lto_input_ts_exp_tree_pointers (ib, data_in, expr);
988
989 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
990 lto_input_ts_block_tree_pointers (ib, data_in, expr);
991
992 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
993 lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
994
995 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
996 lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
997
998 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
999 lto_input_ts_target_option (ib, expr);
1000
1001 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
1002 lto_input_ts_optimization (ib, expr);
1003
1004 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
1005 lto_input_ts_translation_unit_decl_tree_pointers (ib, data_in, expr);
1006}
1007
1008
1009/* Read and INTEGER_CST node from input block IB using the per-file
1010 context in DATA_IN. */
1011
1012tree
1013streamer_read_integer_cst (struct lto_input_block *ib, struct data_in *data_in)
1014{
1015 tree result, type;
1016 HOST_WIDE_INT low, high;
1017 bool overflow_p;
1018
1019 type = stream_read_tree (ib, data_in);
1020 overflow_p = (streamer_read_uchar (ib) != 0);
1021 low = streamer_read_uhwi (ib);
1022 high = streamer_read_uhwi (ib);
1023 result = build_int_cst_wide (type, low, high);
1024
1025 /* If the original constant had overflown, build a replica of RESULT to
1026 avoid modifying the shared constant returned by build_int_cst_wide. */
1027 if (overflow_p)
1028 {
1029 result = copy_node (result);
1030 TREE_OVERFLOW (result) = 1;
1031 }
1032
1033 return result;
1034}
1035
1036
1037/* Read an index IX from input block IB and return the tree node at
1038 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1039
1040tree
1041streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1042{
1043 unsigned HOST_WIDE_INT ix;
1044 tree result;
1045 enum LTO_tags expected_tag;
1046
1047 ix = streamer_read_uhwi (ib);
1048 expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1049
1050 result = streamer_tree_cache_get (data_in->reader_cache, ix);
1051 gcc_assert (result
1052 && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1053
1054 return result;
1055}
1056
1057
1058/* Read a code and class from input block IB and return the
1059 corresponding builtin. DATA_IN is as in stream_read_tree. */
1060
1061tree
1062streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1063{
1064 enum built_in_class fclass;
1065 enum built_in_function fcode;
1066 const char *asmname;
1067 tree result;
1068
1069 fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1070 gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1071
1072 fcode = (enum built_in_function) streamer_read_uhwi (ib);
1073
1074 if (fclass == BUILT_IN_NORMAL)
1075 {
1076 if (fcode >= END_BUILTINS)
1077 fatal_error ("machine independent builtin code out of range");
1078 result = builtin_decl_explicit (fcode);
1079 gcc_assert (result);
1080 }
1081 else if (fclass == BUILT_IN_MD)
1082 {
1083 result = targetm.builtin_decl (fcode, true);
1084 if (!result || result == error_mark_node)
1085 fatal_error ("target specific builtin not available");
1086 }
1087 else
1088 gcc_unreachable ();
1089
1090 asmname = streamer_read_string (data_in, ib);
1091 if (asmname)
1092 set_builtin_user_assembler_name (result, asmname);
1093
1094 streamer_tree_cache_append (data_in->reader_cache, result);
1095
1096 return result;
1097}