1 /* Routines for reading trees from a file stream.
3 Copyright (C) 2011-2013 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"
29 #include "tree-streamer.h"
30 #include "data-streamer.h"
31 #include "streamer-hooks.h"
32 #include "lto-streamer.h"
34 /* Read a STRING_CST from the string table in DATA_IN using input
38 streamer_read_string_cst (struct data_in
*data_in
, struct lto_input_block
*ib
)
43 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
46 return build_string (len
, ptr
);
50 /* Read an IDENTIFIER from the string table in DATA_IN using input
54 input_identifier (struct data_in
*data_in
, struct lto_input_block
*ib
)
59 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
62 return get_identifier_with_length (ptr
, len
);
66 /* Read a chain of tree nodes from input block IB. DATA_IN contains
67 tables and descriptors for the file being read. */
70 streamer_read_chain (struct lto_input_block
*ib
, struct data_in
*data_in
)
72 tree first
, prev
, curr
;
74 /* The chain is written as NULL terminated list of trees. */
75 first
= prev
= NULL_TREE
;
78 curr
= stream_read_tree (ib
, data_in
);
80 TREE_CHAIN (prev
) = curr
;
92 /* Unpack all the non-pointer fields of the TS_BASE structure of
93 expression EXPR from bitpack BP. */
96 unpack_ts_base_value_fields (struct bitpack_d
*bp
, tree expr
)
98 /* Note that the code for EXPR has already been unpacked to create EXPR in
99 streamer_alloc_tree. */
102 TREE_SIDE_EFFECTS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
103 TREE_CONSTANT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
104 TREE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
106 /* TREE_PUBLIC is used on types to indicate that the type
107 has a TYPE_CACHED_VALUES vector. This is not streamed out,
108 so we skip it here. */
109 TREE_PUBLIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
112 bp_unpack_value (bp
, 4);
113 TREE_ADDRESSABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
114 TREE_THIS_VOLATILE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
116 DECL_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
117 else if (TYPE_P (expr
))
118 TYPE_UNSIGNED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
120 bp_unpack_value (bp
, 1);
121 TREE_ASM_WRITTEN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
123 TYPE_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
125 TREE_NO_WARNING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
126 TREE_NOTHROW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
127 TREE_STATIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
128 if (TREE_CODE (expr
) != TREE_BINFO
)
129 TREE_PRIVATE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
130 TREE_PROTECTED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
131 TREE_DEPRECATED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
134 TYPE_SATURATING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
135 TYPE_ADDR_SPACE (expr
) = (unsigned) bp_unpack_value (bp
, 8);
137 else if (TREE_CODE (expr
) == SSA_NAME
)
138 SSA_NAME_IS_DEFAULT_DEF (expr
) = (unsigned) bp_unpack_value (bp
, 1);
140 bp_unpack_value (bp
, 1);
144 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
145 expression EXPR from bitpack BP. */
148 unpack_ts_int_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
150 TREE_INT_CST_LOW (expr
) = bp_unpack_var_len_unsigned (bp
);
151 TREE_INT_CST_HIGH (expr
) = bp_unpack_var_len_int (bp
);
155 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
156 expression EXPR from bitpack BP. */
159 unpack_ts_real_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
165 r
.cl
= (unsigned) bp_unpack_value (bp
, 2);
166 r
.decimal
= (unsigned) bp_unpack_value (bp
, 1);
167 r
.sign
= (unsigned) bp_unpack_value (bp
, 1);
168 r
.signalling
= (unsigned) bp_unpack_value (bp
, 1);
169 r
.canonical
= (unsigned) bp_unpack_value (bp
, 1);
170 r
.uexp
= (unsigned) bp_unpack_value (bp
, EXP_BITS
);
171 for (i
= 0; i
< SIGSZ
; i
++)
172 r
.sig
[i
] = (unsigned long) bp_unpack_value (bp
, HOST_BITS_PER_LONG
);
174 rp
= ggc_alloc_real_value ();
175 memcpy (rp
, &r
, sizeof (REAL_VALUE_TYPE
));
176 TREE_REAL_CST_PTR (expr
) = rp
;
180 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
181 expression EXPR from bitpack BP. */
184 unpack_ts_fixed_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
186 FIXED_VALUE_TYPE
*fp
= ggc_alloc_fixed_value ();
187 fp
->mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
188 fp
->data
.low
= bp_unpack_var_len_int (bp
);
189 fp
->data
.high
= bp_unpack_var_len_int (bp
);
190 TREE_FIXED_CST_PTR (expr
) = fp
;
193 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
194 of expression EXPR from bitpack BP. */
197 unpack_ts_decl_common_value_fields (struct bitpack_d
*bp
, tree expr
)
199 DECL_MODE (expr
) = bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
200 DECL_NONLOCAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
201 DECL_VIRTUAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
202 DECL_IGNORED_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
203 DECL_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
204 DECL_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
205 DECL_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
206 DECL_PRESERVE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
207 DECL_EXTERNAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
208 DECL_GIMPLE_REG_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
209 DECL_ALIGN (expr
) = (unsigned) bp_unpack_var_len_unsigned (bp
);
211 if (TREE_CODE (expr
) == LABEL_DECL
)
213 EH_LANDING_PAD_NR (expr
) = (int) bp_unpack_var_len_unsigned (bp
);
215 /* Always assume an initial value of -1 for LABEL_DECL_UID to
216 force gimple_set_bb to recreate label_to_block_map. */
217 LABEL_DECL_UID (expr
) = -1;
220 if (TREE_CODE (expr
) == FIELD_DECL
)
222 DECL_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
223 DECL_NONADDRESSABLE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
224 expr
->decl_common
.off_align
= bp_unpack_value (bp
, 8);
227 if (TREE_CODE (expr
) == VAR_DECL
)
229 DECL_HAS_DEBUG_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
230 DECL_NONLOCAL_FRAME (expr
) = (unsigned) bp_unpack_value (bp
, 1);
233 if (TREE_CODE (expr
) == RESULT_DECL
234 || TREE_CODE (expr
) == PARM_DECL
235 || TREE_CODE (expr
) == VAR_DECL
)
237 DECL_BY_REFERENCE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
238 if (TREE_CODE (expr
) == VAR_DECL
239 || TREE_CODE (expr
) == PARM_DECL
)
240 DECL_HAS_VALUE_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
245 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
246 of expression EXPR from bitpack BP. */
249 unpack_ts_decl_wrtl_value_fields (struct bitpack_d
*bp
, tree expr
)
251 DECL_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
255 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
256 of expression EXPR from bitpack BP. */
259 unpack_ts_decl_with_vis_value_fields (struct bitpack_d
*bp
, tree expr
)
261 DECL_COMMON (expr
) = (unsigned) bp_unpack_value (bp
, 1);
262 DECL_DLLIMPORT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
263 DECL_WEAK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
264 DECL_SEEN_IN_BIND_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
265 DECL_COMDAT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
266 DECL_VISIBILITY (expr
) = (enum symbol_visibility
) bp_unpack_value (bp
, 2);
267 DECL_VISIBILITY_SPECIFIED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
269 if (TREE_CODE (expr
) == VAR_DECL
)
271 DECL_HARD_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
272 DECL_IN_CONSTANT_POOL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
273 DECL_TLS_MODEL (expr
) = (enum tls_model
) bp_unpack_value (bp
, 3);
276 if (TREE_CODE (expr
) == FUNCTION_DECL
)
278 DECL_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
279 DECL_CXX_CONSTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
280 DECL_CXX_DESTRUCTOR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
282 if (VAR_OR_FUNCTION_DECL_P (expr
))
285 p
= (priority_type
) bp_unpack_var_len_unsigned (bp
);
286 SET_DECL_INIT_PRIORITY (expr
, p
);
291 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
292 of expression EXPR from bitpack BP. */
295 unpack_ts_function_decl_value_fields (struct bitpack_d
*bp
, tree expr
)
297 DECL_BUILT_IN_CLASS (expr
) = bp_unpack_enum (bp
, built_in_class
,
299 DECL_STATIC_CONSTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
300 DECL_STATIC_DESTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
301 DECL_UNINLINABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
302 DECL_POSSIBLY_INLINED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
303 DECL_IS_NOVOPS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
304 DECL_IS_RETURNS_TWICE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
305 DECL_IS_MALLOC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
306 DECL_IS_OPERATOR_NEW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
307 DECL_DECLARED_INLINE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
308 DECL_STATIC_CHAIN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
309 DECL_NO_INLINE_WARNING_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
310 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr
)
311 = (unsigned) bp_unpack_value (bp
, 1);
312 DECL_NO_LIMIT_STACK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
313 DECL_DISREGARD_INLINE_LIMITS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
314 DECL_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
315 DECL_LOOPING_CONST_OR_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
316 if (DECL_BUILT_IN_CLASS (expr
) != NOT_BUILT_IN
)
318 DECL_FUNCTION_CODE (expr
) = (enum built_in_function
) bp_unpack_value (bp
,
320 if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_NORMAL
321 && DECL_FUNCTION_CODE (expr
) >= END_BUILTINS
)
322 fatal_error ("machine independent builtin code out of range");
323 else if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_MD
)
325 tree result
= targetm
.builtin_decl (DECL_FUNCTION_CODE (expr
), true);
326 if (!result
|| result
== error_mark_node
)
327 fatal_error ("target specific builtin not available");
330 if (DECL_STATIC_DESTRUCTOR (expr
))
333 p
= (priority_type
) bp_unpack_var_len_unsigned (bp
);
334 SET_DECL_FINI_PRIORITY (expr
, p
);
339 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
340 of expression EXPR from bitpack BP. */
343 unpack_ts_type_common_value_fields (struct bitpack_d
*bp
, tree expr
)
345 enum machine_mode mode
;
347 mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
348 SET_TYPE_MODE (expr
, mode
);
349 TYPE_STRING_FLAG (expr
) = (unsigned) bp_unpack_value (bp
, 1);
350 TYPE_NO_FORCE_BLK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
351 TYPE_NEEDS_CONSTRUCTING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
352 if (RECORD_OR_UNION_TYPE_P (expr
))
354 TYPE_TRANSPARENT_AGGR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
355 TYPE_FINAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
357 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
358 TYPE_NONALIASED_COMPONENT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
359 TYPE_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
360 TYPE_RESTRICT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
361 TYPE_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
362 TYPE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
363 TYPE_PRECISION (expr
) = bp_unpack_var_len_unsigned (bp
);
364 TYPE_ALIGN (expr
) = bp_unpack_var_len_unsigned (bp
);
365 TYPE_ALIAS_SET (expr
) = bp_unpack_var_len_int (bp
);
369 /* Unpack all the non-pointer fields of the TS_BLOCK structure
370 of expression EXPR from bitpack BP. */
373 unpack_ts_block_value_fields (struct data_in
*data_in
,
374 struct bitpack_d
*bp
, tree expr
)
376 BLOCK_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
377 /* BLOCK_NUMBER is recomputed. */
378 BLOCK_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
381 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
382 structure of expression EXPR from bitpack BP. */
385 unpack_ts_translation_unit_decl_value_fields (struct data_in
*data_in
,
386 struct bitpack_d
*bp
, tree expr
)
388 TRANSLATION_UNIT_LANGUAGE (expr
) = xstrdup (bp_unpack_string (data_in
, bp
));
389 vec_safe_push (all_translation_units
, expr
);
392 /* Unpack a TS_TARGET_OPTION tree from BP into EXPR. */
395 unpack_ts_target_option (struct bitpack_d
*bp
, tree expr
)
398 struct cl_target_option
*t
= TREE_TARGET_OPTION (expr
);
400 len
= sizeof (struct cl_target_option
);
401 for (i
= 0; i
< len
; i
++)
402 ((unsigned char *)t
)[i
] = bp_unpack_value (bp
, 8);
403 if (bp_unpack_value (bp
, 32) != 0x12345678)
404 fatal_error ("cl_target_option size mismatch in LTO reader and writer");
407 /* Unpack a TS_OPTIMIZATION tree from BP into EXPR. */
410 unpack_ts_optimization (struct bitpack_d
*bp
, tree expr
)
413 struct cl_optimization
*t
= TREE_OPTIMIZATION (expr
);
415 len
= sizeof (struct cl_optimization
);
416 for (i
= 0; i
< len
; i
++)
417 ((unsigned char *)t
)[i
] = bp_unpack_value (bp
, 8);
418 if (bp_unpack_value (bp
, 32) != 0x12345678)
419 fatal_error ("cl_optimization size mismatch in LTO reader and writer");
423 /* Unpack all the non-pointer fields in EXPR into a bit pack. */
426 unpack_value_fields (struct data_in
*data_in
, struct bitpack_d
*bp
, tree expr
)
430 code
= TREE_CODE (expr
);
432 /* Note that all these functions are highly sensitive to changes in
433 the types and sizes of each of the fields being packed. */
434 unpack_ts_base_value_fields (bp
, expr
);
436 if (CODE_CONTAINS_STRUCT (code
, TS_INT_CST
))
437 unpack_ts_int_cst_value_fields (bp
, expr
);
439 if (CODE_CONTAINS_STRUCT (code
, TS_REAL_CST
))
440 unpack_ts_real_cst_value_fields (bp
, expr
);
442 if (CODE_CONTAINS_STRUCT (code
, TS_FIXED_CST
))
443 unpack_ts_fixed_cst_value_fields (bp
, expr
);
445 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
446 DECL_SOURCE_LOCATION (expr
) = stream_input_location (bp
, data_in
);
448 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
449 unpack_ts_decl_common_value_fields (bp
, expr
);
451 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WRTL
))
452 unpack_ts_decl_wrtl_value_fields (bp
, expr
);
454 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
455 unpack_ts_decl_with_vis_value_fields (bp
, expr
);
457 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
458 unpack_ts_function_decl_value_fields (bp
, expr
);
460 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
461 unpack_ts_type_common_value_fields (bp
, expr
);
463 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
464 SET_EXPR_LOCATION (expr
, stream_input_location (bp
, data_in
));
466 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
467 unpack_ts_block_value_fields (data_in
, bp
, expr
);
469 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
470 unpack_ts_translation_unit_decl_value_fields (data_in
, bp
, expr
);
472 if (CODE_CONTAINS_STRUCT (code
, TS_TARGET_OPTION
))
473 unpack_ts_target_option (bp
, expr
);
475 if (CODE_CONTAINS_STRUCT (code
, TS_OPTIMIZATION
))
476 unpack_ts_optimization (bp
, expr
);
478 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
480 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
482 vec_safe_grow (BINFO_BASE_ACCESSES (expr
), length
);
485 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
487 unsigned HOST_WIDE_INT length
= bp_unpack_var_len_unsigned (bp
);
489 vec_safe_grow (CONSTRUCTOR_ELTS (expr
), length
);
494 /* Read all the language-independent bitfield values for EXPR from IB.
495 Return the partially unpacked bitpack so the caller can unpack any other
496 bitfield values that the writer may have written. */
499 streamer_read_tree_bitfields (struct lto_input_block
*ib
,
500 struct data_in
*data_in
, tree expr
)
505 /* Read the bitpack of non-pointer values from IB. */
506 bp
= streamer_read_bitpack (ib
);
508 /* The first word in BP contains the code of the tree that we
509 are about to read. */
510 code
= (enum tree_code
) bp_unpack_value (&bp
, 16);
511 lto_tag_check (lto_tree_code_to_tag (code
),
512 lto_tree_code_to_tag (TREE_CODE (expr
)));
514 /* Unpack all the value fields from BP. */
515 unpack_value_fields (data_in
, &bp
, expr
);
521 /* Materialize a new tree from input block IB using descriptors in
522 DATA_IN. The code for the new tree should match TAG. Store in
523 *IX_P the index into the reader cache where the new tree is stored. */
526 streamer_alloc_tree (struct lto_input_block
*ib
, struct data_in
*data_in
,
531 #ifdef LTO_STREAMER_DEBUG
532 HOST_WIDEST_INT orig_address_in_writer
;
537 #ifdef LTO_STREAMER_DEBUG
538 /* Read the word representing the memory address for the tree
539 as it was written by the writer. This is useful when
540 debugging differences between the writer and reader. */
541 orig_address_in_writer
= streamer_read_hwi (ib
);
542 gcc_assert ((intptr_t) orig_address_in_writer
== orig_address_in_writer
);
545 code
= lto_tag_to_tree_code (tag
);
547 /* We should never see an SSA_NAME tree. Only the version numbers of
548 SSA names are ever written out. See input_ssa_names. */
549 gcc_assert (code
!= SSA_NAME
);
551 /* Instantiate a new tree using the header data. */
552 if (CODE_CONTAINS_STRUCT (code
, TS_STRING
))
553 result
= streamer_read_string_cst (data_in
, ib
);
554 else if (CODE_CONTAINS_STRUCT (code
, TS_IDENTIFIER
))
555 result
= input_identifier (data_in
, ib
);
556 else if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
558 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
559 result
= make_tree_vec (len
);
561 else if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
563 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
564 result
= make_vector (len
);
566 else if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
568 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
569 result
= make_tree_binfo (len
);
571 else if (code
== CALL_EXPR
)
573 unsigned HOST_WIDE_INT nargs
= streamer_read_uhwi (ib
);
574 return build_vl_exp (CALL_EXPR
, nargs
+ 3);
578 /* For all other nodes, materialize the tree with a raw
580 result
= make_node (code
);
583 #ifdef LTO_STREAMER_DEBUG
584 /* Store the original address of the tree as seen by the writer
585 in RESULT's aux field. This is useful when debugging streaming
586 problems. This way, a debugging session can be started on
587 both writer and reader with a breakpoint using this address
589 lto_orig_address_map (result
, (intptr_t) orig_address_in_writer
);
596 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
597 block IB. DATA_IN contains tables and descriptors for the
602 lto_input_ts_common_tree_pointers (struct lto_input_block
*ib
,
603 struct data_in
*data_in
, tree expr
)
605 if (TREE_CODE (expr
) != IDENTIFIER_NODE
)
606 TREE_TYPE (expr
) = stream_read_tree (ib
, data_in
);
610 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
611 block IB. DATA_IN contains tables and descriptors for the
615 lto_input_ts_vector_tree_pointers (struct lto_input_block
*ib
,
616 struct data_in
*data_in
, tree expr
)
619 for (i
= 0; i
< VECTOR_CST_NELTS (expr
); ++i
)
620 VECTOR_CST_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
624 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
625 block IB. DATA_IN contains tables and descriptors for the
629 lto_input_ts_complex_tree_pointers (struct lto_input_block
*ib
,
630 struct data_in
*data_in
, tree expr
)
632 TREE_REALPART (expr
) = stream_read_tree (ib
, data_in
);
633 TREE_IMAGPART (expr
) = stream_read_tree (ib
, data_in
);
637 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
638 from input block IB. DATA_IN contains tables and descriptors for the
642 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block
*ib
,
643 struct data_in
*data_in
, tree expr
)
645 DECL_NAME (expr
) = stream_read_tree (ib
, data_in
);
646 DECL_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
650 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
651 input block IB. DATA_IN contains tables and descriptors for the
655 lto_input_ts_decl_common_tree_pointers (struct lto_input_block
*ib
,
656 struct data_in
*data_in
, tree expr
)
658 DECL_SIZE (expr
) = stream_read_tree (ib
, data_in
);
659 DECL_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
660 DECL_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
662 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
663 for early inlining so drop it on the floor instead of ICEing in
666 if ((TREE_CODE (expr
) == VAR_DECL
667 || TREE_CODE (expr
) == PARM_DECL
)
668 && DECL_HAS_VALUE_EXPR_P (expr
))
669 SET_DECL_VALUE_EXPR (expr
, stream_read_tree (ib
, data_in
));
671 if (TREE_CODE (expr
) == VAR_DECL
)
673 tree dexpr
= stream_read_tree (ib
, data_in
);
675 SET_DECL_DEBUG_EXPR (expr
, dexpr
);
680 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
681 EXPR from input block IB. DATA_IN contains tables and descriptors for the
685 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block
*ib
,
686 struct data_in
*data_in
, tree expr
)
688 if (TREE_CODE (expr
) == TYPE_DECL
)
689 DECL_ORIGINAL_TYPE (expr
) = stream_read_tree (ib
, data_in
);
690 DECL_VINDEX (expr
) = stream_read_tree (ib
, data_in
);
694 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
695 from input block IB. DATA_IN contains tables and descriptors for the
699 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block
*ib
,
700 struct data_in
*data_in
, tree expr
)
704 id
= stream_read_tree (ib
, data_in
);
707 gcc_assert (TREE_CODE (id
) == IDENTIFIER_NODE
);
708 SET_DECL_ASSEMBLER_NAME (expr
, id
);
711 DECL_SECTION_NAME (expr
) = stream_read_tree (ib
, data_in
);
712 DECL_COMDAT_GROUP (expr
) = stream_read_tree (ib
, data_in
);
716 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
717 input block IB. DATA_IN contains tables and descriptors for the
721 lto_input_ts_field_decl_tree_pointers (struct lto_input_block
*ib
,
722 struct data_in
*data_in
, tree expr
)
724 DECL_FIELD_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
725 DECL_BIT_FIELD_TYPE (expr
) = stream_read_tree (ib
, data_in
);
726 DECL_BIT_FIELD_REPRESENTATIVE (expr
) = stream_read_tree (ib
, data_in
);
727 DECL_FIELD_BIT_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
728 DECL_FCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
732 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
733 from input block IB. DATA_IN contains tables and descriptors for the
737 lto_input_ts_function_decl_tree_pointers (struct lto_input_block
*ib
,
738 struct data_in
*data_in
, tree expr
)
740 /* DECL_STRUCT_FUNCTION is handled by lto_input_function. FIXME lto,
741 maybe it should be handled here? */
742 DECL_FUNCTION_PERSONALITY (expr
) = stream_read_tree (ib
, data_in
);
743 DECL_FUNCTION_SPECIFIC_TARGET (expr
) = stream_read_tree (ib
, data_in
);
744 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr
) = stream_read_tree (ib
, data_in
);
746 /* If the file contains a function with an EH personality set,
747 then it was compiled with -fexceptions. In that case, initialize
748 the backend EH machinery. */
749 if (DECL_FUNCTION_PERSONALITY (expr
))
754 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
755 input block IB. DATA_IN contains tables and descriptors for the file
759 lto_input_ts_type_common_tree_pointers (struct lto_input_block
*ib
,
760 struct data_in
*data_in
, tree expr
)
762 TYPE_SIZE (expr
) = stream_read_tree (ib
, data_in
);
763 TYPE_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
764 TYPE_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
765 TYPE_NAME (expr
) = stream_read_tree (ib
, data_in
);
766 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
767 reconstructed during fixup. */
768 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
770 TYPE_MAIN_VARIANT (expr
) = stream_read_tree (ib
, data_in
);
771 TYPE_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
772 /* TYPE_CANONICAL gets re-computed during type merging. */
773 TYPE_CANONICAL (expr
) = NULL_TREE
;
774 TYPE_STUB_DECL (expr
) = stream_read_tree (ib
, data_in
);
777 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
778 from input block IB. DATA_IN contains tables and descriptors for the
782 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block
*ib
,
783 struct data_in
*data_in
,
786 if (TREE_CODE (expr
) == ENUMERAL_TYPE
)
787 TYPE_VALUES (expr
) = stream_read_tree (ib
, data_in
);
788 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
789 TYPE_DOMAIN (expr
) = stream_read_tree (ib
, data_in
);
790 else if (RECORD_OR_UNION_TYPE_P (expr
))
791 TYPE_FIELDS (expr
) = streamer_read_chain (ib
, data_in
);
792 else if (TREE_CODE (expr
) == FUNCTION_TYPE
793 || TREE_CODE (expr
) == METHOD_TYPE
)
794 TYPE_ARG_TYPES (expr
) = stream_read_tree (ib
, data_in
);
796 if (!POINTER_TYPE_P (expr
))
797 TYPE_MINVAL (expr
) = stream_read_tree (ib
, data_in
);
798 TYPE_MAXVAL (expr
) = stream_read_tree (ib
, data_in
);
799 if (RECORD_OR_UNION_TYPE_P (expr
))
800 TYPE_BINFO (expr
) = stream_read_tree (ib
, data_in
);
804 /* Read all pointer fields in the TS_LIST structure of EXPR from input
805 block IB. DATA_IN contains tables and descriptors for the
809 lto_input_ts_list_tree_pointers (struct lto_input_block
*ib
,
810 struct data_in
*data_in
, tree expr
)
812 TREE_PURPOSE (expr
) = stream_read_tree (ib
, data_in
);
813 TREE_VALUE (expr
) = stream_read_tree (ib
, data_in
);
814 TREE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
818 /* Read all pointer fields in the TS_VEC structure of EXPR from input
819 block IB. DATA_IN contains tables and descriptors for the
823 lto_input_ts_vec_tree_pointers (struct lto_input_block
*ib
,
824 struct data_in
*data_in
, tree expr
)
828 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
830 for (i
= 0; i
< TREE_VEC_LENGTH (expr
); i
++)
831 TREE_VEC_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
835 /* Read all pointer fields in the TS_EXP structure of EXPR from input
836 block IB. DATA_IN contains tables and descriptors for the
841 lto_input_ts_exp_tree_pointers (struct lto_input_block
*ib
,
842 struct data_in
*data_in
, tree expr
)
846 for (i
= 0; i
< TREE_OPERAND_LENGTH (expr
); i
++)
847 TREE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
849 TREE_SET_BLOCK (expr
, stream_read_tree (ib
, data_in
));
853 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
854 block IB. DATA_IN contains tables and descriptors for the
858 lto_input_ts_block_tree_pointers (struct lto_input_block
*ib
,
859 struct data_in
*data_in
, tree expr
)
861 BLOCK_VARS (expr
) = streamer_read_chain (ib
, data_in
);
863 BLOCK_SUPERCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
865 /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
866 the limited cases we can handle - those that represent inlined
867 function scopes. For the rest them on the floor instead of ICEing in
869 BLOCK_ABSTRACT_ORIGIN (expr
) = stream_read_tree (ib
, data_in
);
870 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
871 for early inlined BLOCKs so drop it on the floor instead of ICEing in
874 /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
877 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
878 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
879 stream the child relationship explicitly. */
880 if (BLOCK_SUPERCONTEXT (expr
)
881 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == BLOCK
)
883 BLOCK_CHAIN (expr
) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
));
884 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
)) = expr
;
887 /* The global block is rooted at the TU decl. Hook it here to
888 avoid the need to stream in this block during WPA time. */
889 else if (BLOCK_SUPERCONTEXT (expr
)
890 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == TRANSLATION_UNIT_DECL
)
891 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr
)) = expr
;
893 /* The function-level block is connected at the time we read in
894 function bodies for the same reason. */
898 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
899 block IB. DATA_IN contains tables and descriptors for the
903 lto_input_ts_binfo_tree_pointers (struct lto_input_block
*ib
,
904 struct data_in
*data_in
, tree expr
)
909 /* Note that the number of slots in EXPR was read in
910 streamer_alloc_tree when instantiating EXPR. However, the
911 vector is empty so we cannot rely on vec::length to know how many
912 elements to read. So, this list is emitted as a 0-terminated
913 list on the writer side. */
916 t
= stream_read_tree (ib
, data_in
);
918 BINFO_BASE_BINFOS (expr
)->quick_push (t
);
922 BINFO_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
923 BINFO_VTABLE (expr
) = stream_read_tree (ib
, data_in
);
924 BINFO_VPTR_FIELD (expr
) = stream_read_tree (ib
, data_in
);
926 /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
927 unpacking the bitfield section. */
928 for (i
= 0; i
< vec_safe_length (BINFO_BASE_ACCESSES (expr
)); i
++)
930 tree a
= stream_read_tree (ib
, data_in
);
931 (*BINFO_BASE_ACCESSES (expr
))[i
] = a
;
933 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
934 and BINFO_VPTR_INDEX; these are used by C++ FE only. */
938 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
939 input block IB. DATA_IN contains tables and descriptors for the
943 lto_input_ts_constructor_tree_pointers (struct lto_input_block
*ib
,
944 struct data_in
*data_in
, tree expr
)
948 for (i
= 0; i
< CONSTRUCTOR_NELTS (expr
); i
++)
951 e
.index
= stream_read_tree (ib
, data_in
);
952 e
.value
= stream_read_tree (ib
, data_in
);
953 (*CONSTRUCTOR_ELTS (expr
))[i
] = e
;
958 /* Read all pointer fields in EXPR from input block IB. DATA_IN
959 contains tables and descriptors for the file being read. */
962 streamer_read_tree_body (struct lto_input_block
*ib
, struct data_in
*data_in
,
967 code
= TREE_CODE (expr
);
969 if (CODE_CONTAINS_STRUCT (code
, TS_TYPED
))
970 lto_input_ts_common_tree_pointers (ib
, data_in
, expr
);
972 if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
973 lto_input_ts_vector_tree_pointers (ib
, data_in
, expr
);
975 if (CODE_CONTAINS_STRUCT (code
, TS_COMPLEX
))
976 lto_input_ts_complex_tree_pointers (ib
, data_in
, expr
);
978 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
979 lto_input_ts_decl_minimal_tree_pointers (ib
, data_in
, expr
);
981 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
982 lto_input_ts_decl_common_tree_pointers (ib
, data_in
, expr
);
984 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_NON_COMMON
))
985 lto_input_ts_decl_non_common_tree_pointers (ib
, data_in
, expr
);
987 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
988 lto_input_ts_decl_with_vis_tree_pointers (ib
, data_in
, expr
);
990 if (CODE_CONTAINS_STRUCT (code
, TS_FIELD_DECL
))
991 lto_input_ts_field_decl_tree_pointers (ib
, data_in
, expr
);
993 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
994 lto_input_ts_function_decl_tree_pointers (ib
, data_in
, expr
);
996 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
997 lto_input_ts_type_common_tree_pointers (ib
, data_in
, expr
);
999 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_NON_COMMON
))
1000 lto_input_ts_type_non_common_tree_pointers (ib
, data_in
, expr
);
1002 if (CODE_CONTAINS_STRUCT (code
, TS_LIST
))
1003 lto_input_ts_list_tree_pointers (ib
, data_in
, expr
);
1005 if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
1006 lto_input_ts_vec_tree_pointers (ib
, data_in
, expr
);
1008 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
1009 lto_input_ts_exp_tree_pointers (ib
, data_in
, expr
);
1011 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
1012 lto_input_ts_block_tree_pointers (ib
, data_in
, expr
);
1014 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
1015 lto_input_ts_binfo_tree_pointers (ib
, data_in
, expr
);
1017 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
1018 lto_input_ts_constructor_tree_pointers (ib
, data_in
, expr
);
1022 /* Read an index IX from input block IB and return the tree node at
1023 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1026 streamer_get_pickled_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1028 unsigned HOST_WIDE_INT ix
;
1030 enum LTO_tags expected_tag
;
1032 ix
= streamer_read_uhwi (ib
);
1033 expected_tag
= streamer_read_enum (ib
, LTO_tags
, LTO_NUM_TAGS
);
1035 result
= streamer_tree_cache_get_tree (data_in
->reader_cache
, ix
);
1037 && TREE_CODE (result
) == lto_tag_to_tree_code (expected_tag
));
1043 /* Read a code and class from input block IB and return the
1044 corresponding builtin. DATA_IN is as in stream_read_tree. */
1047 streamer_get_builtin_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1049 enum built_in_class fclass
;
1050 enum built_in_function fcode
;
1051 const char *asmname
;
1054 fclass
= streamer_read_enum (ib
, built_in_class
, BUILT_IN_LAST
);
1055 gcc_assert (fclass
== BUILT_IN_NORMAL
|| fclass
== BUILT_IN_MD
);
1057 fcode
= (enum built_in_function
) streamer_read_uhwi (ib
);
1059 if (fclass
== BUILT_IN_NORMAL
)
1061 if (fcode
>= END_BUILTINS
)
1062 fatal_error ("machine independent builtin code out of range");
1063 result
= builtin_decl_explicit (fcode
);
1064 gcc_assert (result
);
1066 else if (fclass
== BUILT_IN_MD
)
1068 result
= targetm
.builtin_decl (fcode
, true);
1069 if (!result
|| result
== error_mark_node
)
1070 fatal_error ("target specific builtin not available");
1075 asmname
= streamer_read_string (data_in
, ib
);
1077 set_builtin_user_assembler_name (result
, asmname
);
1079 streamer_tree_cache_append (data_in
->reader_cache
, result
, 0);