1 /* Routines for reading trees from a file stream.
3 Copyright (C) 2011-2014 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
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
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/>. */
24 #include "coretypes.h"
25 #include "diagnostic.h"
27 #include "stringpool.h"
34 #include "hard-reg-set.h"
37 #include "basic-block.h"
38 #include "tree-ssa-alias.h"
39 #include "internal-fn.h"
40 #include "gimple-expr.h"
44 #include "plugin-api.h"
47 #include "tree-streamer.h"
48 #include "data-streamer.h"
49 #include "streamer-hooks.h"
50 #include "lto-streamer.h"
54 /* Read a STRING_CST from the string table in DATA_IN using input
58 streamer_read_string_cst (struct data_in
*data_in
, struct lto_input_block
*ib
)
63 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
66 return build_string (len
, ptr
);
70 /* Read an IDENTIFIER from the string table in DATA_IN using input
74 input_identifier (struct data_in
*data_in
, struct lto_input_block
*ib
)
79 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
82 return get_identifier_with_length (ptr
, len
);
86 /* Read a chain of tree nodes from input block IB. DATA_IN contains
87 tables and descriptors for the file being read. */
90 streamer_read_chain (struct lto_input_block
*ib
, struct data_in
*data_in
)
92 tree first
, prev
, curr
;
94 /* The chain is written as NULL terminated list of trees. */
95 first
= prev
= NULL_TREE
;
98 curr
= stream_read_tree (ib
, data_in
);
100 TREE_CHAIN (prev
) = curr
;
112 /* Unpack all the non-pointer fields of the TS_BASE structure of
113 expression EXPR from bitpack BP. */
116 unpack_ts_base_value_fields (struct bitpack_d
*bp
, tree expr
)
118 /* Note that the code for EXPR has already been unpacked to create EXPR in
119 streamer_alloc_tree. */
122 TREE_SIDE_EFFECTS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
123 TREE_CONSTANT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
124 TREE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
126 /* TREE_PUBLIC is used on types to indicate that the type
127 has a TYPE_CACHED_VALUES vector. This is not streamed out,
128 so we skip it here. */
129 TREE_PUBLIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
132 bp_unpack_value (bp
, 4);
133 TREE_ADDRESSABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
134 TREE_THIS_VOLATILE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
136 DECL_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
137 else if (TYPE_P (expr
))
138 TYPE_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
140 bp_unpack_value (bp
, 1);
141 TREE_ASM_WRITTEN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
143 TYPE_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
145 TREE_NO_WARNING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
146 TREE_NOTHROW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
147 TREE_STATIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
148 if (TREE_CODE (expr
) != TREE_BINFO
)
149 TREE_PRIVATE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
150 TREE_PROTECTED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
151 TREE_DEPRECATED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
154 TYPE_SATURATING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
155 TYPE_ADDR_SPACE (expr
) = (unsigned) bp_unpack_value (bp
, 8);
157 else if (TREE_CODE (expr
) == SSA_NAME
)
158 SSA_NAME_IS_DEFAULT_DEF (expr
) = (unsigned) bp_unpack_value (bp
, 1);
160 bp_unpack_value (bp
, 1);
164 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
165 expression EXPR from bitpack BP. */
168 unpack_ts_int_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
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. */
180 unpack_ts_real_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
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. */
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_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
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. */
221 unpack_ts_decl_common_value_fields (struct bitpack_d
*bp
, tree expr
)
223 DECL_MODE (expr
) = bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
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 DECL_ALIGN (expr
) = (unsigned) bp_unpack_var_len_unsigned (bp
);
235 if (TREE_CODE (expr
) == LABEL_DECL
)
237 EH_LANDING_PAD_NR (expr
) = (int) bp_unpack_var_len_unsigned (bp
);
239 /* Always assume an initial value of -1 for LABEL_DECL_UID to
240 force gimple_set_bb to recreate label_to_block_map. */
241 LABEL_DECL_UID (expr
) = -1;
244 if (TREE_CODE (expr
) == FIELD_DECL
)
246 DECL_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
247 DECL_NONADDRESSABLE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
248 expr
->decl_common
.off_align
= bp_unpack_value (bp
, 8);
251 if (TREE_CODE (expr
) == VAR_DECL
)
253 DECL_HAS_DEBUG_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
254 DECL_NONLOCAL_FRAME (expr
) = (unsigned) bp_unpack_value (bp
, 1);
257 if (TREE_CODE (expr
) == RESULT_DECL
258 || TREE_CODE (expr
) == PARM_DECL
259 || TREE_CODE (expr
) == VAR_DECL
)
261 DECL_BY_REFERENCE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
262 if (TREE_CODE (expr
) == VAR_DECL
263 || TREE_CODE (expr
) == PARM_DECL
)
264 DECL_HAS_VALUE_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
269 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
270 of expression EXPR from bitpack BP. */
273 unpack_ts_decl_wrtl_value_fields (struct bitpack_d
*bp
, tree expr
)
275 DECL_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
279 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
280 of expression EXPR from bitpack BP. */
283 unpack_ts_decl_with_vis_value_fields (struct bitpack_d
*bp
, tree expr
)
285 DECL_COMMON (expr
) = (unsigned) bp_unpack_value (bp
, 1);
286 DECL_DLLIMPORT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
287 DECL_WEAK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
288 DECL_SEEN_IN_BIND_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
289 DECL_COMDAT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
290 DECL_VISIBILITY (expr
) = (enum symbol_visibility
) bp_unpack_value (bp
, 2);
291 DECL_VISIBILITY_SPECIFIED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
293 if (TREE_CODE (expr
) == VAR_DECL
)
295 DECL_HARD_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
296 DECL_IN_CONSTANT_POOL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
299 if (TREE_CODE (expr
) == FUNCTION_DECL
)
301 DECL_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
302 DECL_CXX_CONSTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
303 DECL_CXX_DESTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
308 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
309 of expression EXPR from bitpack BP. */
312 unpack_ts_function_decl_value_fields (struct bitpack_d
*bp
, tree expr
)
314 DECL_BUILT_IN_CLASS (expr
) = bp_unpack_enum (bp
, built_in_class
,
316 DECL_STATIC_CONSTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
317 DECL_STATIC_DESTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
318 DECL_UNINLINABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
319 DECL_POSSIBLY_INLINED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
320 DECL_IS_NOVOPS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
321 DECL_IS_RETURNS_TWICE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
322 DECL_IS_MALLOC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
323 DECL_IS_OPERATOR_NEW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
324 DECL_DECLARED_INLINE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
325 DECL_STATIC_CHAIN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
326 DECL_NO_INLINE_WARNING_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
327 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr
)
328 = (unsigned) bp_unpack_value (bp
, 1);
329 DECL_NO_LIMIT_STACK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
330 DECL_DISREGARD_INLINE_LIMITS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
331 DECL_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
332 DECL_LOOPING_CONST_OR_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
333 if (DECL_BUILT_IN_CLASS (expr
) != NOT_BUILT_IN
)
335 DECL_FUNCTION_CODE (expr
) = (enum built_in_function
) bp_unpack_value (bp
,
337 if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_NORMAL
338 && DECL_FUNCTION_CODE (expr
) >= END_BUILTINS
)
339 fatal_error ("machine independent builtin code out of range");
340 else if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_MD
)
342 tree result
= targetm
.builtin_decl (DECL_FUNCTION_CODE (expr
), true);
343 if (!result
|| result
== error_mark_node
)
344 fatal_error ("target specific builtin not available");
350 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
351 of expression EXPR from bitpack BP. */
354 unpack_ts_type_common_value_fields (struct bitpack_d
*bp
, tree expr
)
358 mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
359 SET_TYPE_MODE (expr
, mode
);
360 TYPE_STRING_FLAG (expr
) = (unsigned) bp_unpack_value (bp
, 1);
361 TYPE_NO_FORCE_BLK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
362 TYPE_NEEDS_CONSTRUCTING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
363 if (RECORD_OR_UNION_TYPE_P (expr
))
365 TYPE_TRANSPARENT_AGGR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
366 TYPE_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
368 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
369 TYPE_NONALIASED_COMPONENT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
370 TYPE_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
371 TYPE_RESTRICT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
372 TYPE_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
373 TYPE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
374 TYPE_PRECISION (expr
) = bp_unpack_var_len_unsigned (bp
);
375 TYPE_ALIGN (expr
) = bp_unpack_var_len_unsigned (bp
);
376 TYPE_ALIAS_SET (expr
) = bp_unpack_var_len_int (bp
);
380 /* Unpack all the non-pointer fields of the TS_BLOCK structure
381 of expression EXPR from bitpack BP. */
384 unpack_ts_block_value_fields (struct data_in
*data_in
,
385 struct bitpack_d
*bp
, tree expr
)
387 BLOCK_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
388 /* BLOCK_NUMBER is recomputed. */
389 BLOCK_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
392 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
393 structure of expression EXPR from bitpack BP. */
396 unpack_ts_translation_unit_decl_value_fields (struct data_in
*data_in
,
397 struct bitpack_d
*bp
, tree expr
)
399 TRANSLATION_UNIT_LANGUAGE (expr
) = xstrdup (bp_unpack_string (data_in
, bp
));
400 vec_safe_push (all_translation_units
, expr
);
404 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
405 structure of expression EXPR from bitpack BP. */
408 unpack_ts_omp_clause_value_fields (struct data_in
*data_in
,
409 struct bitpack_d
*bp
, tree expr
)
411 OMP_CLAUSE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
412 switch (OMP_CLAUSE_CODE (expr
))
414 case OMP_CLAUSE_DEFAULT
:
415 OMP_CLAUSE_DEFAULT_KIND (expr
)
416 = bp_unpack_enum (bp
, omp_clause_default_kind
,
417 OMP_CLAUSE_DEFAULT_LAST
);
419 case OMP_CLAUSE_SCHEDULE
:
420 OMP_CLAUSE_SCHEDULE_KIND (expr
)
421 = bp_unpack_enum (bp
, omp_clause_schedule_kind
,
422 OMP_CLAUSE_SCHEDULE_LAST
);
424 case OMP_CLAUSE_DEPEND
:
425 OMP_CLAUSE_DEPEND_KIND (expr
)
426 = bp_unpack_enum (bp
, omp_clause_depend_kind
, OMP_CLAUSE_DEPEND_LAST
);
429 OMP_CLAUSE_MAP_KIND (expr
)
430 = bp_unpack_enum (bp
, omp_clause_map_kind
, OMP_CLAUSE_MAP_LAST
);
432 case OMP_CLAUSE_PROC_BIND
:
433 OMP_CLAUSE_PROC_BIND_KIND (expr
)
434 = bp_unpack_enum (bp
, omp_clause_proc_bind_kind
,
435 OMP_CLAUSE_PROC_BIND_LAST
);
437 case OMP_CLAUSE_REDUCTION
:
438 OMP_CLAUSE_REDUCTION_CODE (expr
)
439 = bp_unpack_enum (bp
, tree_code
, MAX_TREE_CODES
);
446 /* Unpack all the non-pointer fields in EXPR into a bit pack. */
449 unpack_value_fields (struct data_in
*data_in
, struct bitpack_d
*bp
, tree expr
)
453 code
= TREE_CODE (expr
);
455 /* Note that all these functions are highly sensitive to changes in
456 the types and sizes of each of the fields being packed. */
457 unpack_ts_base_value_fields (bp
, expr
);
459 if (CODE_CONTAINS_STRUCT (code
, TS_INT_CST
))
460 unpack_ts_int_cst_value_fields (bp
, expr
);
462 if (CODE_CONTAINS_STRUCT (code
, TS_REAL_CST
))
463 unpack_ts_real_cst_value_fields (bp
, expr
);
465 if (CODE_CONTAINS_STRUCT (code
, TS_FIXED_CST
))
466 unpack_ts_fixed_cst_value_fields (bp
, expr
);
468 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
469 DECL_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
471 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
472 unpack_ts_decl_common_value_fields (bp
, expr
);
474 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WRTL
))
475 unpack_ts_decl_wrtl_value_fields (bp
, expr
);
477 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
478 unpack_ts_decl_with_vis_value_fields (bp
, expr
);
480 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
481 unpack_ts_function_decl_value_fields (bp
, expr
);
483 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
484 unpack_ts_type_common_value_fields (bp
, expr
);
486 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
488 SET_EXPR_LOCATION (expr
, stream_input_location (bp
, data_in
));
490 || code
== TARGET_MEM_REF
)
492 MR_DEPENDENCE_CLIQUE (expr
)
493 = (unsigned)bp_unpack_value (bp
, sizeof (short) * 8);
494 if (MR_DEPENDENCE_CLIQUE (expr
) != 0)
495 MR_DEPENDENCE_BASE (expr
)
496 = (unsigned)bp_unpack_value (bp
, sizeof (short) * 8);
500 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
501 unpack_ts_block_value_fields (data_in
, bp
, expr
);
503 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
504 unpack_ts_translation_unit_decl_value_fields (data_in
, bp
, expr
);
506 if (CODE_CONTAINS_STRUCT (code
, TS_OPTIMIZATION
))
507 cl_optimization_stream_in (bp
, TREE_OPTIMIZATION (expr
));
509 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
511 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
513 vec_safe_grow (BINFO_BASE_ACCESSES (expr
), length
);
516 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
518 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
520 vec_safe_grow (CONSTRUCTOR_ELTS (expr
), length
);
523 if (CODE_CONTAINS_STRUCT (code
, TS_TARGET_OPTION
))
524 cl_target_option_stream_in (data_in
, bp
, TREE_TARGET_OPTION (expr
));
526 if (code
== OMP_CLAUSE
)
527 unpack_ts_omp_clause_value_fields (data_in
, bp
, expr
);
531 /* Read all the language-independent bitfield values for EXPR from IB.
532 Return the partially unpacked bitpack so the caller can unpack any other
533 bitfield values that the writer may have written. */
536 streamer_read_tree_bitfields (struct lto_input_block
*ib
,
537 struct data_in
*data_in
, tree expr
)
542 /* Read the bitpack of non-pointer values from IB. */
543 bp
= streamer_read_bitpack (ib
);
545 /* The first word in BP contains the code of the tree that we
546 are about to read. */
547 code
= (enum tree_code
) bp_unpack_value (&bp
, 16);
548 lto_tag_check (lto_tree_code_to_tag (code
),
549 lto_tree_code_to_tag (TREE_CODE (expr
)));
551 /* Unpack all the value fields from BP. */
552 unpack_value_fields (data_in
, &bp
, expr
);
558 /* Materialize a new tree from input block IB using descriptors in
559 DATA_IN. The code for the new tree should match TAG. Store in
560 *IX_P the index into the reader cache where the new tree is stored. */
563 streamer_alloc_tree (struct lto_input_block
*ib
, struct data_in
*data_in
,
568 #ifdef LTO_STREAMER_DEBUG
569 HOST_WIDE_INT orig_address_in_writer
;
574 #ifdef LTO_STREAMER_DEBUG
575 /* Read the word representing the memory address for the tree
576 as it was written by the writer. This is useful when
577 debugging differences between the writer and reader. */
578 orig_address_in_writer
= streamer_read_hwi (ib
);
579 gcc_assert ((intptr_t) orig_address_in_writer
== orig_address_in_writer
);
582 code
= lto_tag_to_tree_code (tag
);
584 /* We should never see an SSA_NAME tree. Only the version numbers of
585 SSA names are ever written out. See input_ssa_names. */
586 gcc_assert (code
!= SSA_NAME
);
588 /* Instantiate a new tree using the header data. */
589 if (CODE_CONTAINS_STRUCT (code
, TS_STRING
))
590 result
= streamer_read_string_cst (data_in
, ib
);
591 else if (CODE_CONTAINS_STRUCT (code
, TS_IDENTIFIER
))
592 result
= input_identifier (data_in
, ib
);
593 else if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
595 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
596 result
= make_tree_vec (len
);
598 else if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
600 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
601 result
= make_vector (len
);
603 else if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
605 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
606 result
= make_tree_binfo (len
);
608 else if (CODE_CONTAINS_STRUCT (code
, TS_INT_CST
))
610 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
611 unsigned HOST_WIDE_INT ext_len
= streamer_read_uhwi (ib
);
612 result
= make_int_cst (len
, ext_len
);
614 else if (code
== CALL_EXPR
)
616 unsigned HOST_WIDE_INT nargs
= streamer_read_uhwi (ib
);
617 return build_vl_exp (CALL_EXPR
, nargs
+ 3);
619 else if (code
== OMP_CLAUSE
)
621 enum omp_clause_code subcode
622 = (enum omp_clause_code
) streamer_read_uhwi (ib
);
623 return build_omp_clause (UNKNOWN_LOCATION
, subcode
);
627 /* For all other nodes, materialize the tree with a raw
629 result
= make_node (code
);
632 #ifdef LTO_STREAMER_DEBUG
633 /* Store the original address of the tree as seen by the writer
634 in RESULT's aux field. This is useful when debugging streaming
635 problems. This way, a debugging session can be started on
636 both writer and reader with a breakpoint using this address
638 lto_orig_address_map (result
, (intptr_t) orig_address_in_writer
);
645 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
646 block IB. DATA_IN contains tables and descriptors for the
651 lto_input_ts_common_tree_pointers (struct lto_input_block
*ib
,
652 struct data_in
*data_in
, tree expr
)
654 if (TREE_CODE (expr
) != IDENTIFIER_NODE
)
655 TREE_TYPE (expr
) = stream_read_tree (ib
, data_in
);
659 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
660 block IB. DATA_IN contains tables and descriptors for the
664 lto_input_ts_vector_tree_pointers (struct lto_input_block
*ib
,
665 struct data_in
*data_in
, tree expr
)
668 for (i
= 0; i
< VECTOR_CST_NELTS (expr
); ++i
)
669 VECTOR_CST_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
673 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
674 block IB. DATA_IN contains tables and descriptors for the
678 lto_input_ts_complex_tree_pointers (struct lto_input_block
*ib
,
679 struct data_in
*data_in
, tree expr
)
681 TREE_REALPART (expr
) = stream_read_tree (ib
, data_in
);
682 TREE_IMAGPART (expr
) = stream_read_tree (ib
, data_in
);
686 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
687 from input block IB. DATA_IN contains tables and descriptors for the
691 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block
*ib
,
692 struct data_in
*data_in
, tree expr
)
694 DECL_NAME (expr
) = stream_read_tree (ib
, data_in
);
695 DECL_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
699 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
700 input block IB. DATA_IN contains tables and descriptors for the
704 lto_input_ts_decl_common_tree_pointers (struct lto_input_block
*ib
,
705 struct data_in
*data_in
, tree expr
)
707 DECL_SIZE (expr
) = stream_read_tree (ib
, data_in
);
708 DECL_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
709 DECL_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
711 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
712 for early inlining so drop it on the floor instead of ICEing in
715 if ((TREE_CODE (expr
) == VAR_DECL
716 || TREE_CODE (expr
) == PARM_DECL
)
717 && DECL_HAS_VALUE_EXPR_P (expr
))
718 SET_DECL_VALUE_EXPR (expr
, stream_read_tree (ib
, data_in
));
720 if (TREE_CODE (expr
) == VAR_DECL
)
722 tree dexpr
= stream_read_tree (ib
, data_in
);
724 SET_DECL_DEBUG_EXPR (expr
, dexpr
);
729 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
730 EXPR from input block IB. DATA_IN contains tables and descriptors for the
734 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block
*ib
,
735 struct data_in
*data_in
, tree expr
)
737 if (TREE_CODE (expr
) == TYPE_DECL
)
738 DECL_ORIGINAL_TYPE (expr
) = stream_read_tree (ib
, data_in
);
742 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
743 from input block IB. DATA_IN contains tables and descriptors for the
747 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block
*ib
,
748 struct data_in
*data_in
, tree expr
)
752 id
= stream_read_tree (ib
, data_in
);
755 gcc_assert (TREE_CODE (id
) == IDENTIFIER_NODE
);
756 SET_DECL_ASSEMBLER_NAME (expr
, id
);
761 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
762 input block IB. DATA_IN contains tables and descriptors for the
766 lto_input_ts_field_decl_tree_pointers (struct lto_input_block
*ib
,
767 struct data_in
*data_in
, tree expr
)
769 DECL_FIELD_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
770 DECL_BIT_FIELD_TYPE (expr
) = stream_read_tree (ib
, data_in
);
771 DECL_BIT_FIELD_REPRESENTATIVE (expr
) = stream_read_tree (ib
, data_in
);
772 DECL_FIELD_BIT_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
773 DECL_FCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
777 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
778 from input block IB. DATA_IN contains tables and descriptors for the
782 lto_input_ts_function_decl_tree_pointers (struct lto_input_block
*ib
,
783 struct data_in
*data_in
, tree expr
)
785 DECL_VINDEX (expr
) = stream_read_tree (ib
, data_in
);
786 /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */
787 DECL_FUNCTION_PERSONALITY (expr
) = stream_read_tree (ib
, data_in
);
788 DECL_FUNCTION_SPECIFIC_TARGET (expr
) = stream_read_tree (ib
, data_in
);
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
))
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
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
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
827 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block
*ib
,
828 struct data_in
*data_in
,
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
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
868 lto_input_ts_vec_tree_pointers (struct lto_input_block
*ib
,
869 struct data_in
*data_in
, tree expr
)
873 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
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
886 lto_input_ts_exp_tree_pointers (struct lto_input_block
*ib
,
887 struct data_in
*data_in
, tree expr
)
891 for (i
= 0; i
< TREE_OPERAND_LENGTH (expr
); i
++)
892 TREE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
894 TREE_SET_BLOCK (expr
, stream_read_tree (ib
, data_in
));
898 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
899 block IB. DATA_IN contains tables and descriptors for the
903 lto_input_ts_block_tree_pointers (struct lto_input_block
*ib
,
904 struct data_in
*data_in
, tree expr
)
906 BLOCK_VARS (expr
) = streamer_read_chain (ib
, data_in
);
908 BLOCK_SUPERCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
910 /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
911 the limited cases we can handle - those that represent inlined
912 function scopes. For the rest them on the floor instead of ICEing in
914 BLOCK_ABSTRACT_ORIGIN (expr
) = stream_read_tree (ib
, data_in
);
915 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
916 for early inlined BLOCKs so drop it on the floor instead of ICEing in
919 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
922 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
923 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
924 stream the child relationship explicitly. */
925 if (BLOCK_SUPERCONTEXT (expr
)
926 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == BLOCK
)
928 BLOCK_CHAIN (expr
) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
));
929 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
)) = expr
;
932 /* The global block is rooted at the TU decl. Hook it here to
933 avoid the need to stream in this block during WPA time. */
934 else if (BLOCK_SUPERCONTEXT (expr
)
935 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == TRANSLATION_UNIT_DECL
)
936 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr
)) = expr
;
938 /* The function-level block is connected at the time we read in
939 function bodies for the same reason. */
943 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
944 block IB. DATA_IN contains tables and descriptors for the
948 lto_input_ts_binfo_tree_pointers (struct lto_input_block
*ib
,
949 struct data_in
*data_in
, tree expr
)
954 /* Note that the number of slots in EXPR was read in
955 streamer_alloc_tree when instantiating EXPR. However, the
956 vector is empty so we cannot rely on vec::length to know how many
957 elements to read. So, this list is emitted as a 0-terminated
958 list on the writer side. */
961 t
= stream_read_tree (ib
, data_in
);
963 BINFO_BASE_BINFOS (expr
)->quick_push (t
);
967 BINFO_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
968 BINFO_VTABLE (expr
) = stream_read_tree (ib
, data_in
);
969 BINFO_VPTR_FIELD (expr
) = stream_read_tree (ib
, data_in
);
971 /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
972 unpacking the bitfield section. */
973 for (i
= 0; i
< vec_safe_length (BINFO_BASE_ACCESSES (expr
)); i
++)
975 tree a
= stream_read_tree (ib
, data_in
);
976 (*BINFO_BASE_ACCESSES (expr
))[i
] = a
;
978 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
979 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
983 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
984 input block IB. DATA_IN contains tables and descriptors for the
988 lto_input_ts_constructor_tree_pointers (struct lto_input_block
*ib
,
989 struct data_in
*data_in
, tree expr
)
993 for (i
= 0; i
< CONSTRUCTOR_NELTS (expr
); i
++)
996 e
.index
= stream_read_tree (ib
, data_in
);
997 e
.value
= stream_read_tree (ib
, data_in
);
998 (*CONSTRUCTOR_ELTS (expr
))[i
] = e
;
1003 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1004 input block IB. DATA_IN contains tables and descriptors for the
1008 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block
*ib
,
1009 struct data_in
*data_in
, tree expr
)
1013 for (i
= 0; i
< omp_clause_num_ops
[OMP_CLAUSE_CODE (expr
)]; i
++)
1014 OMP_CLAUSE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
1015 OMP_CLAUSE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
1019 /* Read all pointer fields in EXPR from input block IB. DATA_IN
1020 contains tables and descriptors for the file being read. */
1023 streamer_read_tree_body (struct lto_input_block
*ib
, struct data_in
*data_in
,
1026 enum tree_code code
;
1028 code
= TREE_CODE (expr
);
1030 if (CODE_CONTAINS_STRUCT (code
, TS_TYPED
))
1031 lto_input_ts_common_tree_pointers (ib
, data_in
, expr
);
1033 if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
1034 lto_input_ts_vector_tree_pointers (ib
, data_in
, expr
);
1036 if (CODE_CONTAINS_STRUCT (code
, TS_COMPLEX
))
1037 lto_input_ts_complex_tree_pointers (ib
, data_in
, expr
);
1039 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
1040 lto_input_ts_decl_minimal_tree_pointers (ib
, data_in
, expr
);
1042 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
1043 lto_input_ts_decl_common_tree_pointers (ib
, data_in
, expr
);
1045 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_NON_COMMON
))
1046 lto_input_ts_decl_non_common_tree_pointers (ib
, data_in
, expr
);
1048 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
1049 lto_input_ts_decl_with_vis_tree_pointers (ib
, data_in
, expr
);
1051 if (CODE_CONTAINS_STRUCT (code
, TS_FIELD_DECL
))
1052 lto_input_ts_field_decl_tree_pointers (ib
, data_in
, expr
);
1054 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
1055 lto_input_ts_function_decl_tree_pointers (ib
, data_in
, expr
);
1057 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
1058 lto_input_ts_type_common_tree_pointers (ib
, data_in
, expr
);
1060 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_NON_COMMON
))
1061 lto_input_ts_type_non_common_tree_pointers (ib
, data_in
, expr
);
1063 if (CODE_CONTAINS_STRUCT (code
, TS_LIST
))
1064 lto_input_ts_list_tree_pointers (ib
, data_in
, expr
);
1066 if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
1067 lto_input_ts_vec_tree_pointers (ib
, data_in
, expr
);
1069 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
1070 lto_input_ts_exp_tree_pointers (ib
, data_in
, expr
);
1072 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
1073 lto_input_ts_block_tree_pointers (ib
, data_in
, expr
);
1075 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
1076 lto_input_ts_binfo_tree_pointers (ib
, data_in
, expr
);
1078 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
1079 lto_input_ts_constructor_tree_pointers (ib
, data_in
, expr
);
1081 if (code
== OMP_CLAUSE
)
1082 lto_input_ts_omp_clause_tree_pointers (ib
, data_in
, expr
);
1086 /* Read an index IX from input block IB and return the tree node at
1087 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1090 streamer_get_pickled_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1092 unsigned HOST_WIDE_INT ix
;
1094 enum LTO_tags expected_tag
;
1096 ix
= streamer_read_uhwi (ib
);
1097 expected_tag
= streamer_read_enum (ib
, LTO_tags
, LTO_NUM_TAGS
);
1099 result
= streamer_tree_cache_get_tree (data_in
->reader_cache
, ix
);
1101 && TREE_CODE (result
) == lto_tag_to_tree_code (expected_tag
));
1107 /* Read a code and class from input block IB and return the
1108 corresponding builtin. DATA_IN is as in stream_read_tree. */
1111 streamer_get_builtin_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1113 enum built_in_class fclass
;
1114 enum built_in_function fcode
;
1115 const char *asmname
;
1118 fclass
= streamer_read_enum (ib
, built_in_class
, BUILT_IN_LAST
);
1119 gcc_assert (fclass
== BUILT_IN_NORMAL
|| fclass
== BUILT_IN_MD
);
1121 fcode
= (enum built_in_function
) streamer_read_uhwi (ib
);
1123 if (fclass
== BUILT_IN_NORMAL
)
1125 if (fcode
>= END_BUILTINS
)
1126 fatal_error ("machine independent builtin code out of range");
1127 result
= builtin_decl_explicit (fcode
);
1129 && fcode
> BEGIN_CHKP_BUILTINS
1130 && fcode
< END_CHKP_BUILTINS
)
1132 fcode
= (enum built_in_function
) (fcode
- BEGIN_CHKP_BUILTINS
- 1);
1133 result
= builtin_decl_explicit (fcode
);
1134 result
= chkp_maybe_clone_builtin_fndecl (result
);
1136 gcc_assert (result
);
1138 else if (fclass
== BUILT_IN_MD
)
1140 result
= targetm
.builtin_decl (fcode
, true);
1141 if (!result
|| result
== error_mark_node
)
1142 fatal_error ("target specific builtin not available");
1147 asmname
= streamer_read_string (data_in
, ib
);
1149 set_builtin_user_assembler_name (result
, asmname
);
1151 streamer_tree_cache_append (data_in
->reader_cache
, result
, 0);