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[official-gcc.git] / gcc / tree-streamer-in.c
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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 if (AGGREGATE_TYPE_P (expr))
380 TYPE_TYPELESS_STORAGE (expr) = (unsigned) bp_unpack_value (bp, 1);
381 TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
382 SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
383 #ifdef ACCEL_COMPILER
384 if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
385 SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
386 #endif
390 /* Unpack all the non-pointer fields of the TS_BLOCK structure
391 of expression EXPR from bitpack BP. */
393 static void
394 unpack_ts_block_value_fields (struct data_in *data_in,
395 struct bitpack_d *bp, tree expr)
397 BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
398 /* BLOCK_NUMBER is recomputed. */
399 stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
402 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
403 structure of expression EXPR from bitpack BP. */
405 static void
406 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
407 struct bitpack_d *bp, tree expr)
409 TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
410 vec_safe_push (all_translation_units, expr);
414 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
415 structure of expression EXPR from bitpack BP. */
417 static void
418 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
419 struct bitpack_d *bp, tree expr)
421 stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
422 switch (OMP_CLAUSE_CODE (expr))
424 case OMP_CLAUSE_DEFAULT:
425 OMP_CLAUSE_DEFAULT_KIND (expr)
426 = bp_unpack_enum (bp, omp_clause_default_kind,
427 OMP_CLAUSE_DEFAULT_LAST);
428 break;
429 case OMP_CLAUSE_SCHEDULE:
430 OMP_CLAUSE_SCHEDULE_KIND (expr)
431 = bp_unpack_enum (bp, omp_clause_schedule_kind,
432 OMP_CLAUSE_SCHEDULE_LAST);
433 break;
434 case OMP_CLAUSE_DEPEND:
435 OMP_CLAUSE_DEPEND_KIND (expr)
436 = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
437 break;
438 case OMP_CLAUSE_MAP:
439 OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
440 GOMP_MAP_LAST));
441 break;
442 case OMP_CLAUSE_PROC_BIND:
443 OMP_CLAUSE_PROC_BIND_KIND (expr)
444 = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
445 OMP_CLAUSE_PROC_BIND_LAST);
446 break;
447 case OMP_CLAUSE_REDUCTION:
448 OMP_CLAUSE_REDUCTION_CODE (expr)
449 = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
450 break;
451 default:
452 break;
457 /* Read all the language-independent bitfield values for EXPR from IB.
458 Return the partially unpacked bitpack so the caller can unpack any other
459 bitfield values that the writer may have written. */
461 void
462 streamer_read_tree_bitfields (struct lto_input_block *ib,
463 struct data_in *data_in, tree expr)
465 enum tree_code code;
466 struct bitpack_d bp;
468 /* Read the bitpack of non-pointer values from IB. */
469 bp = streamer_read_bitpack (ib);
471 /* The first word in BP contains the code of the tree that we
472 are about to read. */
473 code = (enum tree_code) bp_unpack_value (&bp, 16);
474 lto_tag_check (lto_tree_code_to_tag (code),
475 lto_tree_code_to_tag (TREE_CODE (expr)));
477 /* Note that all these functions are highly sensitive to changes in
478 the types and sizes of each of the fields being packed. */
479 unpack_ts_base_value_fields (&bp, expr);
481 if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
482 unpack_ts_int_cst_value_fields (&bp, expr);
484 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
485 unpack_ts_real_cst_value_fields (&bp, expr);
487 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
488 unpack_ts_fixed_cst_value_fields (&bp, expr);
490 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
491 stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
493 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
494 unpack_ts_decl_common_value_fields (&bp, expr);
496 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
497 unpack_ts_decl_wrtl_value_fields (&bp, expr);
499 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
500 unpack_ts_decl_with_vis_value_fields (&bp, expr);
502 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
503 unpack_ts_function_decl_value_fields (&bp, expr);
505 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
506 unpack_ts_type_common_value_fields (&bp, expr);
508 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
510 stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
511 if (code == MEM_REF
512 || code == TARGET_MEM_REF)
514 MR_DEPENDENCE_CLIQUE (expr)
515 = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
516 if (MR_DEPENDENCE_CLIQUE (expr) != 0)
517 MR_DEPENDENCE_BASE (expr)
518 = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
522 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
523 unpack_ts_block_value_fields (data_in, &bp, expr);
525 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
526 unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
528 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
529 cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
531 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
533 unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
534 if (length > 0)
535 vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
538 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
540 unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
541 if (length > 0)
542 vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
545 #ifndef ACCEL_COMPILER
546 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
548 cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
549 if (targetm.target_option.post_stream_in)
550 targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
552 #endif
554 if (code == OMP_CLAUSE)
555 unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
559 /* Materialize a new tree from input block IB using descriptors in
560 DATA_IN. The code for the new tree should match TAG. Store in
561 *IX_P the index into the reader cache where the new tree is stored. */
563 tree
564 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
565 enum LTO_tags tag)
567 enum tree_code code;
568 tree result;
570 result = NULL_TREE;
572 code = lto_tag_to_tree_code (tag);
574 /* We should never see an SSA_NAME tree. Only the version numbers of
575 SSA names are ever written out. See input_ssa_names. */
576 gcc_assert (code != SSA_NAME);
578 /* Instantiate a new tree using the header data. */
579 if (CODE_CONTAINS_STRUCT (code, TS_STRING))
580 result = streamer_read_string_cst (data_in, ib);
581 else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
582 result = input_identifier (data_in, ib);
583 else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
585 HOST_WIDE_INT len = streamer_read_hwi (ib);
586 result = make_tree_vec (len);
588 else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
590 HOST_WIDE_INT len = streamer_read_hwi (ib);
591 result = make_vector (len);
593 else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
595 unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
596 result = make_tree_binfo (len);
598 else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
600 unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
601 unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
602 result = make_int_cst (len, ext_len);
604 else if (code == CALL_EXPR)
606 unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
607 return build_vl_exp (CALL_EXPR, nargs + 3);
609 else if (code == OMP_CLAUSE)
611 enum omp_clause_code subcode
612 = (enum omp_clause_code) streamer_read_uhwi (ib);
613 return build_omp_clause (UNKNOWN_LOCATION, subcode);
615 else
617 /* For all other nodes, materialize the tree with a raw
618 make_node call. */
619 result = make_node (code);
622 return result;
626 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
627 block IB. DATA_IN contains tables and descriptors for the
628 file being read. */
631 static void
632 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
633 struct data_in *data_in, tree expr)
635 if (TREE_CODE (expr) != IDENTIFIER_NODE)
636 TREE_TYPE (expr) = stream_read_tree (ib, data_in);
640 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
641 block IB. DATA_IN contains tables and descriptors for the
642 file being read. */
644 static void
645 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
646 struct data_in *data_in, tree expr)
648 unsigned i;
649 for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
650 VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
654 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
655 block IB. DATA_IN contains tables and descriptors for the
656 file being read. */
658 static void
659 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
660 struct data_in *data_in, tree expr)
662 TREE_REALPART (expr) = stream_read_tree (ib, data_in);
663 TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
667 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
668 from input block IB. DATA_IN contains tables and descriptors for the
669 file being read. */
671 static void
672 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
673 struct data_in *data_in, tree expr)
675 DECL_NAME (expr) = stream_read_tree (ib, data_in);
676 DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
680 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
681 input block IB. DATA_IN contains tables and descriptors for the
682 file being read. */
684 static void
685 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
686 struct data_in *data_in, tree expr)
688 DECL_SIZE (expr) = stream_read_tree (ib, data_in);
689 DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
690 DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
692 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
693 for early inlining so drop it on the floor instead of ICEing in
694 dwarf2out.c. */
696 if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
697 && DECL_HAS_VALUE_EXPR_P (expr))
698 SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
700 if (VAR_P (expr))
702 tree dexpr = stream_read_tree (ib, data_in);
703 if (dexpr)
704 SET_DECL_DEBUG_EXPR (expr, dexpr);
709 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
710 EXPR from input block IB. DATA_IN contains tables and descriptors for the
711 file being read. */
713 static void
714 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
715 struct data_in *data_in, tree expr)
717 if (TREE_CODE (expr) == TYPE_DECL)
718 DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
722 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
723 from input block IB. DATA_IN contains tables and descriptors for the
724 file being read. */
726 static void
727 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
728 struct data_in *data_in, tree expr)
730 tree id;
732 id = stream_read_tree (ib, data_in);
733 if (id)
735 gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
736 SET_DECL_ASSEMBLER_NAME (expr, id);
741 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
742 input block IB. DATA_IN contains tables and descriptors for the
743 file being read. */
745 static void
746 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
747 struct data_in *data_in, tree expr)
749 DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
750 DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
751 DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
752 DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
753 DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
757 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
758 from input block IB. DATA_IN contains tables and descriptors for the
759 file being read. */
761 static void
762 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
763 struct data_in *data_in, tree expr)
765 DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
766 /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */
767 DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
768 #ifndef ACCEL_COMPILER
769 DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
770 #endif
771 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
773 /* If the file contains a function with an EH personality set,
774 then it was compiled with -fexceptions. In that case, initialize
775 the backend EH machinery. */
776 if (DECL_FUNCTION_PERSONALITY (expr))
777 lto_init_eh ();
781 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
782 input block IB. DATA_IN contains tables and descriptors for the file
783 being read. */
785 static void
786 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
787 struct data_in *data_in, tree expr)
789 TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
790 TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
791 TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
792 TYPE_NAME (expr) = stream_read_tree (ib, data_in);
793 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
794 reconstructed during fixup. */
795 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
796 during fixup. */
797 TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
798 TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
799 /* TYPE_CANONICAL gets re-computed during type merging. */
800 TYPE_CANONICAL (expr) = NULL_TREE;
801 TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
804 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
805 from input block IB. DATA_IN contains tables and descriptors for the
806 file being read. */
808 static void
809 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
810 struct data_in *data_in,
811 tree expr)
813 if (TREE_CODE (expr) == ENUMERAL_TYPE)
814 TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
815 else if (TREE_CODE (expr) == ARRAY_TYPE)
816 TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
817 else if (RECORD_OR_UNION_TYPE_P (expr))
818 TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
819 else if (TREE_CODE (expr) == FUNCTION_TYPE
820 || TREE_CODE (expr) == METHOD_TYPE)
821 TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
823 if (!POINTER_TYPE_P (expr))
824 TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
825 TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
826 if (RECORD_OR_UNION_TYPE_P (expr))
827 TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
831 /* Read all pointer fields in the TS_LIST structure of EXPR from input
832 block IB. DATA_IN contains tables and descriptors for the
833 file being read. */
835 static void
836 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
837 struct data_in *data_in, tree expr)
839 TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
840 TREE_VALUE (expr) = stream_read_tree (ib, data_in);
841 TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
845 /* Read all pointer fields in the TS_VEC structure of EXPR from input
846 block IB. DATA_IN contains tables and descriptors for the
847 file being read. */
849 static void
850 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
851 struct data_in *data_in, tree expr)
853 int i;
855 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
856 instantiate EXPR. */
857 for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
858 TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
862 /* Read all pointer fields in the TS_EXP structure of EXPR from input
863 block IB. DATA_IN contains tables and descriptors for the
864 file being read. */
867 static void
868 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
869 struct data_in *data_in, tree expr)
871 int i;
872 tree block;
874 for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
875 TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
877 block = stream_read_tree (ib, data_in);
879 /* TODO: Block is stored in the locus information. It may make more sense to
880 to make it go via the location cache. */
881 if (block)
883 data_in->location_cache.apply_location_cache ();
884 TREE_SET_BLOCK (expr, block);
889 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
890 block IB. DATA_IN contains tables and descriptors for the
891 file being read. */
893 static void
894 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
895 struct data_in *data_in, tree expr)
897 BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
899 BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
901 /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
902 the limited cases we can handle - those that represent inlined
903 function scopes. For the rest them on the floor instead of ICEing in
904 dwarf2out.c. */
905 BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
906 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
907 for early inlined BLOCKs so drop it on the floor instead of ICEing in
908 dwarf2out.c. */
910 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
911 streaming time. */
913 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
914 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
915 stream the child relationship explicitly. */
916 if (BLOCK_SUPERCONTEXT (expr)
917 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
919 BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
920 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
923 /* The global block is rooted at the TU decl. Hook it here to
924 avoid the need to stream in this block during WPA time. */
925 else if (BLOCK_SUPERCONTEXT (expr)
926 && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
927 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
929 /* The function-level block is connected at the time we read in
930 function bodies for the same reason. */
934 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
935 block IB. DATA_IN contains tables and descriptors for the
936 file being read. */
938 static void
939 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
940 struct data_in *data_in, tree expr)
942 unsigned i;
943 tree t;
945 /* Note that the number of slots in EXPR was read in
946 streamer_alloc_tree when instantiating EXPR. However, the
947 vector is empty so we cannot rely on vec::length to know how many
948 elements to read. So, this list is emitted as a 0-terminated
949 list on the writer side. */
952 t = stream_read_tree (ib, data_in);
953 if (t)
954 BINFO_BASE_BINFOS (expr)->quick_push (t);
956 while (t);
958 BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
959 BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
960 BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
962 /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
963 unpacking the bitfield section. */
964 for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
966 tree a = stream_read_tree (ib, data_in);
967 (*BINFO_BASE_ACCESSES (expr))[i] = a;
969 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
970 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
974 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
975 input block IB. DATA_IN contains tables and descriptors for the
976 file being read. */
978 static void
979 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
980 struct data_in *data_in, tree expr)
982 unsigned i;
984 for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
986 constructor_elt e;
987 e.index = stream_read_tree (ib, data_in);
988 e.value = stream_read_tree (ib, data_in);
989 (*CONSTRUCTOR_ELTS (expr))[i] = e;
994 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
995 input block IB. DATA_IN contains tables and descriptors for the
996 file being read. */
998 static void
999 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1000 struct data_in *data_in, tree expr)
1002 int i;
1004 for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1005 OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1006 OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1010 /* Read all pointer fields in EXPR from input block IB. DATA_IN
1011 contains tables and descriptors for the file being read. */
1013 void
1014 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1015 tree expr)
1017 enum tree_code code;
1019 code = TREE_CODE (expr);
1021 if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1022 lto_input_ts_common_tree_pointers (ib, data_in, expr);
1024 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1025 lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1027 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1028 lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1030 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1031 lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1033 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1034 lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1036 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1037 lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1039 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1040 lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1042 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1043 lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1045 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1046 lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1048 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1049 lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1051 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1052 lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1054 if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1055 lto_input_ts_list_tree_pointers (ib, data_in, expr);
1057 if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1058 lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1060 if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1061 lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1063 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1064 lto_input_ts_block_tree_pointers (ib, data_in, expr);
1066 if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1067 lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1069 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1070 lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1072 if (code == OMP_CLAUSE)
1073 lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1077 /* Read an index IX from input block IB and return the tree node at
1078 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1080 tree
1081 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1083 unsigned HOST_WIDE_INT ix;
1084 tree result;
1085 enum LTO_tags expected_tag;
1087 ix = streamer_read_uhwi (ib);
1088 expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1090 result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1091 gcc_assert (result
1092 && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1094 return result;