2017-03-17 Richard Biener <rguenther@suse.de>
[official-gcc.git] / gcc / tree-streamer-in.c
blob3496df5deb979ca258a9f6ee74b22788fabb6a8a
1 /* Routines for reading trees from a file stream.
3 Copyright (C) 2011-2017 Free Software Foundation, Inc.
4 Contributed by Diego Novillo <dnovillo@google.com>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 #include "config.h"
23 #include "system.h"
24 #include "coretypes.h"
25 #include "backend.h"
26 #include "target.h"
27 #include "tree.h"
28 #include "gimple.h"
29 #include "stringpool.h"
30 #include "tree-streamer.h"
31 #include "cgraph.h"
32 #include "builtins.h"
33 #include "ipa-chkp.h"
34 #include "gomp-constants.h"
35 #include "asan.h"
38 /* Read a STRING_CST from the string table in DATA_IN using input
39 block IB. */
41 tree
42 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
44 unsigned int len;
45 const char * ptr;
47 ptr = streamer_read_indexed_string (data_in, ib, &len);
48 if (!ptr)
49 return NULL;
50 return build_string (len, ptr);
54 /* Read an IDENTIFIER from the string table in DATA_IN using input
55 block IB. */
57 static tree
58 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
60 unsigned int len;
61 const char *ptr;
63 ptr = streamer_read_indexed_string (data_in, ib, &len);
64 if (!ptr)
65 return NULL;
66 return get_identifier_with_length (ptr, len);
70 /* Read a chain of tree nodes from input block IB. DATA_IN contains
71 tables and descriptors for the file being read. */
73 tree
74 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
76 tree first, prev, curr;
78 /* The chain is written as NULL terminated list of trees. */
79 first = prev = NULL_TREE;
82 curr = stream_read_tree (ib, data_in);
83 if (prev)
84 TREE_CHAIN (prev) = curr;
85 else
86 first = curr;
88 prev = curr;
90 while (curr);
92 return first;
96 /* Unpack all the non-pointer fields of the TS_BASE structure of
97 expression EXPR from bitpack BP. */
99 static inline void
100 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
102 /* Note that the code for EXPR has already been unpacked to create EXPR in
103 streamer_alloc_tree. */
104 if (!TYPE_P (expr))
106 TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
107 TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
108 TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
110 /* TREE_PUBLIC is used on types to indicate that the type
111 has a TYPE_CACHED_VALUES vector. This is not streamed out,
112 so we skip it here. */
113 TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
115 else
116 bp_unpack_value (bp, 4);
117 TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
118 TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
119 if (DECL_P (expr))
121 DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
122 DECL_NAMELESS (expr) = (unsigned) bp_unpack_value (bp, 1);
124 else if (TYPE_P (expr))
125 TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
126 else
127 bp_unpack_value (bp, 1);
128 TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
129 if (TYPE_P (expr))
130 TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
131 else
132 TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
133 TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
134 TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
135 if (TREE_CODE (expr) != TREE_BINFO)
136 TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
137 else
138 bp_unpack_value (bp, 1);
139 TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
140 TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
141 if (TYPE_P (expr))
143 if (AGGREGATE_TYPE_P (expr))
144 TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
145 else
146 TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
147 TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
149 else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
151 REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
152 bp_unpack_value (bp, 8);
154 else if (TREE_CODE (expr) == SSA_NAME)
156 SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
157 bp_unpack_value (bp, 8);
159 else
160 bp_unpack_value (bp, 9);
164 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
165 expression EXPR from bitpack BP. */
167 static void
168 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
170 int i;
171 for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
172 TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
176 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
177 expression EXPR from bitpack BP. */
179 static void
180 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
182 unsigned i;
183 REAL_VALUE_TYPE r;
184 REAL_VALUE_TYPE *rp;
186 /* Clear all bits of the real value type so that we can later do
187 bitwise comparisons to see if two values are the same. */
188 memset (&r, 0, sizeof r);
189 r.cl = (unsigned) bp_unpack_value (bp, 2);
190 r.decimal = (unsigned) bp_unpack_value (bp, 1);
191 r.sign = (unsigned) bp_unpack_value (bp, 1);
192 r.signalling = (unsigned) bp_unpack_value (bp, 1);
193 r.canonical = (unsigned) bp_unpack_value (bp, 1);
194 r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
195 for (i = 0; i < SIGSZ; i++)
196 r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
198 rp = ggc_alloc<real_value> ();
199 memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
200 TREE_REAL_CST_PTR (expr) = rp;
204 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
205 expression EXPR from bitpack BP. */
207 static void
208 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
210 FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
211 fp->mode = bp_unpack_machine_mode (bp);
212 fp->data.low = bp_unpack_var_len_int (bp);
213 fp->data.high = bp_unpack_var_len_int (bp);
214 TREE_FIXED_CST_PTR (expr) = fp;
217 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
218 of expression EXPR from bitpack BP. */
220 static void
221 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
223 SET_DECL_MODE (expr, bp_unpack_machine_mode (bp));
224 DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
225 DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
226 DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
227 DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
228 DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
229 DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
230 DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
231 DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
232 DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
233 SET_DECL_ALIGN (expr, (unsigned) bp_unpack_var_len_unsigned (bp));
234 #ifdef ACCEL_COMPILER
235 if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
236 SET_DECL_ALIGN (expr, targetm.absolute_biggest_alignment);
237 #endif
238 if (TREE_CODE (expr) == LABEL_DECL)
240 EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
242 /* Always assume an initial value of -1 for LABEL_DECL_UID to
243 force gimple_set_bb to recreate label_to_block_map. */
244 LABEL_DECL_UID (expr) = -1;
247 if (TREE_CODE (expr) == FIELD_DECL)
249 DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
250 DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
251 expr->decl_common.off_align = bp_unpack_value (bp, 8);
254 if (VAR_P (expr))
256 DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
257 DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
260 if (TREE_CODE (expr) == RESULT_DECL
261 || TREE_CODE (expr) == PARM_DECL
262 || VAR_P (expr))
264 DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
265 if (VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
266 DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
271 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
272 of expression EXPR from bitpack BP. */
274 static void
275 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
277 DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
281 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
282 of expression EXPR from bitpack BP. */
284 static void
285 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
287 DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
288 DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
289 DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
290 DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
291 DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp, 1);
292 DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp, 2);
293 DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp, 1);
295 if (VAR_P (expr))
297 DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
298 DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
301 if (TREE_CODE (expr) == FUNCTION_DECL)
303 DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
304 DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
305 DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
310 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
311 of expression EXPR from bitpack BP. */
313 static void
314 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
316 DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
317 BUILT_IN_LAST);
318 DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
319 DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
320 DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
321 DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
322 DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
323 DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
324 DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
325 DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
326 DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
327 DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
328 DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
329 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
330 = (unsigned) bp_unpack_value (bp, 1);
331 DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
332 DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
333 DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
334 DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
335 if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
337 DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
338 12);
339 if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
340 && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
341 fatal_error (input_location,
342 "machine independent builtin code out of range");
343 else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
345 tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
346 if (!result || result == error_mark_node)
347 fatal_error (input_location,
348 "target specific builtin not available");
354 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
355 of expression EXPR from bitpack BP. */
357 static void
358 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
360 machine_mode mode;
362 mode = bp_unpack_machine_mode (bp);
363 SET_TYPE_MODE (expr, mode);
364 TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
365 /* TYPE_NO_FORCE_BLK is private to stor-layout and need
366 no streaming. */
367 TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
368 TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
369 TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
370 TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
371 TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
372 if (RECORD_OR_UNION_TYPE_P (expr))
374 TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
375 TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
377 else if (TREE_CODE (expr) == ARRAY_TYPE)
378 TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
379 TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
380 SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
381 #ifdef ACCEL_COMPILER
382 if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
383 SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
384 #endif
388 /* Unpack all the non-pointer fields of the TS_BLOCK structure
389 of expression EXPR from bitpack BP. */
391 static void
392 unpack_ts_block_value_fields (struct data_in *data_in,
393 struct bitpack_d *bp, tree expr)
395 BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
396 /* BLOCK_NUMBER is recomputed. */
397 stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
400 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
401 structure of expression EXPR from bitpack BP. */
403 static void
404 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
405 struct bitpack_d *bp, tree expr)
407 TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
408 vec_safe_push (all_translation_units, expr);
412 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
413 structure of expression EXPR from bitpack BP. */
415 static void
416 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
417 struct bitpack_d *bp, tree expr)
419 stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
420 switch (OMP_CLAUSE_CODE (expr))
422 case OMP_CLAUSE_DEFAULT:
423 OMP_CLAUSE_DEFAULT_KIND (expr)
424 = bp_unpack_enum (bp, omp_clause_default_kind,
425 OMP_CLAUSE_DEFAULT_LAST);
426 break;
427 case OMP_CLAUSE_SCHEDULE:
428 OMP_CLAUSE_SCHEDULE_KIND (expr)
429 = bp_unpack_enum (bp, omp_clause_schedule_kind,
430 OMP_CLAUSE_SCHEDULE_LAST);
431 break;
432 case OMP_CLAUSE_DEPEND:
433 OMP_CLAUSE_DEPEND_KIND (expr)
434 = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
435 break;
436 case OMP_CLAUSE_MAP:
437 OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
438 GOMP_MAP_LAST));
439 break;
440 case OMP_CLAUSE_PROC_BIND:
441 OMP_CLAUSE_PROC_BIND_KIND (expr)
442 = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
443 OMP_CLAUSE_PROC_BIND_LAST);
444 break;
445 case OMP_CLAUSE_REDUCTION:
446 OMP_CLAUSE_REDUCTION_CODE (expr)
447 = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
448 break;
449 default:
450 break;
455 /* Read all the language-independent bitfield values for EXPR from IB.
456 Return the partially unpacked bitpack so the caller can unpack any other
457 bitfield values that the writer may have written. */
459 void
460 streamer_read_tree_bitfields (struct lto_input_block *ib,
461 struct data_in *data_in, tree expr)
463 enum tree_code code;
464 struct bitpack_d bp;
466 /* Read the bitpack of non-pointer values from IB. */
467 bp = streamer_read_bitpack (ib);
469 /* The first word in BP contains the code of the tree that we
470 are about to read. */
471 code = (enum tree_code) bp_unpack_value (&bp, 16);
472 lto_tag_check (lto_tree_code_to_tag (code),
473 lto_tree_code_to_tag (TREE_CODE (expr)));
475 /* Note that all these functions are highly sensitive to changes in
476 the types and sizes of each of the fields being packed. */
477 unpack_ts_base_value_fields (&bp, expr);
479 if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
480 unpack_ts_int_cst_value_fields (&bp, expr);
482 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
483 unpack_ts_real_cst_value_fields (&bp, expr);
485 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
486 unpack_ts_fixed_cst_value_fields (&bp, expr);
488 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
489 stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
491 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
492 unpack_ts_decl_common_value_fields (&bp, expr);
494 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
495 unpack_ts_decl_wrtl_value_fields (&bp, expr);
497 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
498 unpack_ts_decl_with_vis_value_fields (&bp, expr);
500 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
501 unpack_ts_function_decl_value_fields (&bp, expr);
503 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
504 unpack_ts_type_common_value_fields (&bp, expr);
506 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
508 stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
509 if (code == MEM_REF
510 || code == TARGET_MEM_REF)
512 MR_DEPENDENCE_CLIQUE (expr)
513 = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
514 if (MR_DEPENDENCE_CLIQUE (expr) != 0)
515 MR_DEPENDENCE_BASE (expr)
516 = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
520 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
521 unpack_ts_block_value_fields (data_in, &bp, expr);
523 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
524 unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
526 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
527 cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
529 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
531 unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
532 if (length > 0)
533 vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
536 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
538 unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
539 if (length > 0)
540 vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
543 #ifndef ACCEL_COMPILER
544 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
546 cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
547 if (targetm.target_option.post_stream_in)
548 targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
550 #endif
552 if (code == OMP_CLAUSE)
553 unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
557 /* Materialize a new tree from input block IB using descriptors in
558 DATA_IN. The code for the new tree should match TAG. Store in
559 *IX_P the index into the reader cache where the new tree is stored. */
561 tree
562 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
563 enum LTO_tags tag)
565 enum tree_code code;
566 tree result;
567 #ifdef LTO_STREAMER_DEBUG
568 HOST_WIDE_INT orig_address_in_writer;
569 #endif
571 result = NULL_TREE;
573 #ifdef LTO_STREAMER_DEBUG
574 /* Read the word representing the memory address for the tree
575 as it was written by the writer. This is useful when
576 debugging differences between the writer and reader. */
577 orig_address_in_writer = streamer_read_hwi (ib);
578 gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
579 #endif
581 code = lto_tag_to_tree_code (tag);
583 /* We should never see an SSA_NAME tree. Only the version numbers of
584 SSA names are ever written out. See input_ssa_names. */
585 gcc_assert (code != SSA_NAME);
587 /* Instantiate a new tree using the header data. */
588 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
589 result = streamer_read_string_cst (data_in, ib);
590 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
591 result = input_identifier (data_in, ib);
592 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
594 HOST_WIDE_INT len = streamer_read_hwi (ib);
595 result = make_tree_vec (len);
597 else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
599 HOST_WIDE_INT len = streamer_read_hwi (ib);
600 result = make_vector (len);
602 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
604 unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
605 result = make_tree_binfo (len);
607 else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
609 unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
610 unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
611 result = make_int_cst (len, ext_len);
613 else if (code == CALL_EXPR)
615 unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
616 return build_vl_exp (CALL_EXPR, nargs + 3);
618 else if (code == OMP_CLAUSE)
620 enum omp_clause_code subcode
621 = (enum omp_clause_code) streamer_read_uhwi (ib);
622 return build_omp_clause (UNKNOWN_LOCATION, subcode);
624 else
626 /* For all other nodes, materialize the tree with a raw
627 make_node call. */
628 result = make_node (code);
631 #ifdef LTO_STREAMER_DEBUG
632 /* Store the original address of the tree as seen by the writer
633 in RESULT's aux field. This is useful when debugging streaming
634 problems. This way, a debugging session can be started on
635 both writer and reader with a breakpoint using this address
636 value in both. */
637 lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
638 #endif
640 return result;
644 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
645 block IB. DATA_IN contains tables and descriptors for the
646 file being read. */
649 static void
650 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
651 struct data_in *data_in, tree expr)
653 if (TREE_CODE (expr) != IDENTIFIER_NODE)
654 TREE_TYPE (expr) = stream_read_tree (ib, data_in);
658 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
659 block IB. DATA_IN contains tables and descriptors for the
660 file being read. */
662 static void
663 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
664 struct data_in *data_in, tree expr)
666 unsigned i;
667 for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
668 VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
672 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
673 block IB. DATA_IN contains tables and descriptors for the
674 file being read. */
676 static void
677 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
678 struct data_in *data_in, tree expr)
680 TREE_REALPART (expr) = stream_read_tree (ib, data_in);
681 TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
685 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
686 from input block IB. DATA_IN contains tables and descriptors for the
687 file being read. */
689 static void
690 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
691 struct data_in *data_in, tree expr)
693 DECL_NAME (expr) = stream_read_tree (ib, data_in);
694 DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
698 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
699 input block IB. DATA_IN contains tables and descriptors for the
700 file being read. */
702 static void
703 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
704 struct data_in *data_in, tree expr)
706 DECL_SIZE (expr) = stream_read_tree (ib, data_in);
707 DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
708 DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
710 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
711 for early inlining so drop it on the floor instead of ICEing in
712 dwarf2out.c. */
714 if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
715 && DECL_HAS_VALUE_EXPR_P (expr))
716 SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
718 if (VAR_P (expr))
720 tree dexpr = stream_read_tree (ib, data_in);
721 if (dexpr)
722 SET_DECL_DEBUG_EXPR (expr, dexpr);
727 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
728 EXPR from input block IB. DATA_IN contains tables and descriptors for the
729 file being read. */
731 static void
732 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
733 struct data_in *data_in, tree expr)
735 if (TREE_CODE (expr) == TYPE_DECL)
736 DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
740 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
741 from input block IB. DATA_IN contains tables and descriptors for the
742 file being read. */
744 static void
745 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
746 struct data_in *data_in, tree expr)
748 tree id;
750 id = stream_read_tree (ib, data_in);
751 if (id)
753 gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
754 SET_DECL_ASSEMBLER_NAME (expr, id);
759 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
760 input block IB. DATA_IN contains tables and descriptors for the
761 file being read. */
763 static void
764 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
765 struct data_in *data_in, tree expr)
767 DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
768 DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
769 DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
770 DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
771 DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
775 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
776 from input block IB. DATA_IN contains tables and descriptors for the
777 file being read. */
779 static void
780 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
781 struct data_in *data_in, tree expr)
783 DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
784 /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */
785 DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
786 #ifndef ACCEL_COMPILER
787 DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
788 #endif
789 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
791 /* If the file contains a function with an EH personality set,
792 then it was compiled with -fexceptions. In that case, initialize
793 the backend EH machinery. */
794 if (DECL_FUNCTION_PERSONALITY (expr))
795 lto_init_eh ();
799 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
800 input block IB. DATA_IN contains tables and descriptors for the file
801 being read. */
803 static void
804 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
805 struct data_in *data_in, tree expr)
807 TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
808 TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
809 TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
810 TYPE_NAME (expr) = stream_read_tree (ib, data_in);
811 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
812 reconstructed during fixup. */
813 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
814 during fixup. */
815 TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
816 TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
817 /* TYPE_CANONICAL gets re-computed during type merging. */
818 TYPE_CANONICAL (expr) = NULL_TREE;
819 TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
822 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
823 from input block IB. DATA_IN contains tables and descriptors for the
824 file being read. */
826 static void
827 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
828 struct data_in *data_in,
829 tree expr)
831 if (TREE_CODE (expr) == ENUMERAL_TYPE)
832 TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
833 else if (TREE_CODE (expr) == ARRAY_TYPE)
834 TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
835 else if (RECORD_OR_UNION_TYPE_P (expr))
836 TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
837 else if (TREE_CODE (expr) == FUNCTION_TYPE
838 || TREE_CODE (expr) == METHOD_TYPE)
839 TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
841 if (!POINTER_TYPE_P (expr))
842 TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
843 TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
844 if (RECORD_OR_UNION_TYPE_P (expr))
845 TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
849 /* Read all pointer fields in the TS_LIST structure of EXPR from input
850 block IB. DATA_IN contains tables and descriptors for the
851 file being read. */
853 static void
854 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
855 struct data_in *data_in, tree expr)
857 TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
858 TREE_VALUE (expr) = stream_read_tree (ib, data_in);
859 TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
863 /* Read all pointer fields in the TS_VEC structure of EXPR from input
864 block IB. DATA_IN contains tables and descriptors for the
865 file being read. */
867 static void
868 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
869 struct data_in *data_in, tree expr)
871 int i;
873 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
874 instantiate EXPR. */
875 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
876 TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
880 /* Read all pointer fields in the TS_EXP structure of EXPR from input
881 block IB. DATA_IN contains tables and descriptors for the
882 file being read. */
885 static void
886 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
887 struct data_in *data_in, tree expr)
889 int i;
890 tree block;
892 for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
893 TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
895 block = stream_read_tree (ib, data_in);
897 /* TODO: Block is stored in the locus information. It may make more sense to
898 to make it go via the location cache. */
899 if (block)
901 data_in->location_cache.apply_location_cache ();
902 TREE_SET_BLOCK (expr, block);
907 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
908 block IB. DATA_IN contains tables and descriptors for the
909 file being read. */
911 static void
912 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
913 struct data_in *data_in, tree expr)
915 BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
917 BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
919 /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
920 the limited cases we can handle - those that represent inlined
921 function scopes. For the rest them on the floor instead of ICEing in
922 dwarf2out.c. */
923 BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
924 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
925 for early inlined BLOCKs so drop it on the floor instead of ICEing in
926 dwarf2out.c. */
928 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
929 streaming time. */
931 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
932 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
933 stream the child relationship explicitly. */
934 if (BLOCK_SUPERCONTEXT (expr)
935 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
937 BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
938 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
941 /* The global block is rooted at the TU decl. Hook it here to
942 avoid the need to stream in this block during WPA time. */
943 else if (BLOCK_SUPERCONTEXT (expr)
944 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
945 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
947 /* The function-level block is connected at the time we read in
948 function bodies for the same reason. */
952 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
953 block IB. DATA_IN contains tables and descriptors for the
954 file being read. */
956 static void
957 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
958 struct data_in *data_in, tree expr)
960 unsigned i;
961 tree t;
963 /* Note that the number of slots in EXPR was read in
964 streamer_alloc_tree when instantiating EXPR. However, the
965 vector is empty so we cannot rely on vec::length to know how many
966 elements to read. So, this list is emitted as a 0-terminated
967 list on the writer side. */
970 t = stream_read_tree (ib, data_in);
971 if (t)
972 BINFO_BASE_BINFOS (expr)->quick_push (t);
974 while (t);
976 BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
977 BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
978 BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
980 /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
981 unpacking the bitfield section. */
982 for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
984 tree a = stream_read_tree (ib, data_in);
985 (*BINFO_BASE_ACCESSES (expr))[i] = a;
987 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
988 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
992 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
993 input block IB. DATA_IN contains tables and descriptors for the
994 file being read. */
996 static void
997 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
998 struct data_in *data_in, tree expr)
1000 unsigned i;
1002 for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1004 constructor_elt e;
1005 e.index = stream_read_tree (ib, data_in);
1006 e.value = stream_read_tree (ib, data_in);
1007 (*CONSTRUCTOR_ELTS (expr))[i] = e;
1012 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1013 input block IB. DATA_IN contains tables and descriptors for the
1014 file being read. */
1016 static void
1017 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1018 struct data_in *data_in, tree expr)
1020 int i;
1022 for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1023 OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1024 OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1028 /* Read all pointer fields in EXPR from input block IB. DATA_IN
1029 contains tables and descriptors for the file being read. */
1031 void
1032 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1033 tree expr)
1035 enum tree_code code;
1037 code = TREE_CODE (expr);
1039 if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1040 lto_input_ts_common_tree_pointers (ib, data_in, expr);
1042 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1043 lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1045 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1046 lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1048 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1049 lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1051 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1052 lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1054 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1055 lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1057 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1058 lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1060 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1061 lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1063 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1064 lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1066 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1067 lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1069 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1070 lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1072 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1073 lto_input_ts_list_tree_pointers (ib, data_in, expr);
1075 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1076 lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1078 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1079 lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1081 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1082 lto_input_ts_block_tree_pointers (ib, data_in, expr);
1084 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1085 lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1087 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1088 lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1090 if (code == OMP_CLAUSE)
1091 lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1095 /* Read an index IX from input block IB and return the tree node at
1096 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1098 tree
1099 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1101 unsigned HOST_WIDE_INT ix;
1102 tree result;
1103 enum LTO_tags expected_tag;
1105 ix = streamer_read_uhwi (ib);
1106 expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1108 result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1109 gcc_assert (result
1110 && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1112 return result;