1 /* Routines for reading trees from a file stream.
3 Copyright 2011 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 "tree-flow.h"
28 #include "tree-streamer.h"
29 #include "data-streamer.h"
30 #include "streamer-hooks.h"
31 #include "lto-streamer.h"
33 /* Read a STRING_CST from the string table in DATA_IN using input
37 streamer_read_string_cst (struct data_in
*data_in
, struct lto_input_block
*ib
)
42 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
45 return build_string (len
, ptr
);
49 /* Read an IDENTIFIER from the string table in DATA_IN using input
53 input_identifier (struct data_in
*data_in
, struct lto_input_block
*ib
)
58 ptr
= streamer_read_indexed_string (data_in
, ib
, &len
);
61 return get_identifier_with_length (ptr
, len
);
65 /* Read a chain of tree nodes from input block IB. DATA_IN contains
66 tables and descriptors for the file being read. */
69 streamer_read_chain (struct lto_input_block
*ib
, struct data_in
*data_in
)
72 tree first
, prev
, curr
;
74 first
= prev
= NULL_TREE
;
75 count
= streamer_read_hwi (ib
);
76 for (i
= 0; i
< count
; i
++)
78 curr
= stream_read_tree (ib
, data_in
);
80 TREE_CHAIN (prev
) = curr
;
84 TREE_CHAIN (curr
) = NULL_TREE
;
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_USED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
127 TREE_NOTHROW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
128 TREE_STATIC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
129 TREE_PRIVATE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
130 TREE_PROTECTED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
131 TREE_DEPRECATED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
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_REAL_CST structure of
145 expression EXPR from bitpack BP. */
148 unpack_ts_real_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
154 r
.cl
= (unsigned) bp_unpack_value (bp
, 2);
155 r
.decimal
= (unsigned) bp_unpack_value (bp
, 1);
156 r
.sign
= (unsigned) bp_unpack_value (bp
, 1);
157 r
.signalling
= (unsigned) bp_unpack_value (bp
, 1);
158 r
.canonical
= (unsigned) bp_unpack_value (bp
, 1);
159 r
.uexp
= (unsigned) bp_unpack_value (bp
, EXP_BITS
);
160 for (i
= 0; i
< SIGSZ
; i
++)
161 r
.sig
[i
] = (unsigned long) bp_unpack_value (bp
, HOST_BITS_PER_LONG
);
163 rp
= ggc_alloc_real_value ();
164 memcpy (rp
, &r
, sizeof (REAL_VALUE_TYPE
));
165 TREE_REAL_CST_PTR (expr
) = rp
;
169 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
170 expression EXPR from bitpack BP. */
173 unpack_ts_fixed_cst_value_fields (struct bitpack_d
*bp
, tree expr
)
175 FIXED_VALUE_TYPE
*fp
= ggc_alloc_fixed_value ();
176 fp
->mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
177 fp
->data
.low
= bp_unpack_var_len_int (bp
);
178 fp
->data
.high
= bp_unpack_var_len_int (bp
);
179 TREE_FIXED_CST_PTR (expr
) = fp
;
183 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
184 of expression EXPR from bitpack BP. */
187 unpack_ts_decl_common_value_fields (struct bitpack_d
*bp
, tree expr
)
189 DECL_MODE (expr
) = bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
190 DECL_NONLOCAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
191 DECL_VIRTUAL_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
192 DECL_IGNORED_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
193 DECL_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
194 DECL_ARTIFICIAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
195 DECL_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
196 DECL_PRESERVE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
197 DECL_DEBUG_EXPR_IS_FROM (expr
) = (unsigned) bp_unpack_value (bp
, 1);
198 DECL_EXTERNAL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
199 DECL_GIMPLE_REG_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
200 DECL_ALIGN (expr
) = (unsigned) bp_unpack_var_len_unsigned (bp
);
202 if (TREE_CODE (expr
) == LABEL_DECL
)
204 DECL_ERROR_ISSUED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
205 EH_LANDING_PAD_NR (expr
) = (int) bp_unpack_var_len_unsigned (bp
);
207 /* Always assume an initial value of -1 for LABEL_DECL_UID to
208 force gimple_set_bb to recreate label_to_block_map. */
209 LABEL_DECL_UID (expr
) = -1;
212 if (TREE_CODE (expr
) == FIELD_DECL
)
214 DECL_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
215 DECL_NONADDRESSABLE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
216 expr
->decl_common
.off_align
= bp_unpack_value (bp
, 8);
219 if (TREE_CODE (expr
) == RESULT_DECL
220 || TREE_CODE (expr
) == PARM_DECL
221 || TREE_CODE (expr
) == VAR_DECL
)
223 DECL_BY_REFERENCE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
224 if (TREE_CODE (expr
) == VAR_DECL
225 || TREE_CODE (expr
) == PARM_DECL
)
226 DECL_HAS_VALUE_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
227 DECL_RESTRICTED_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
232 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
233 of expression EXPR from bitpack BP. */
236 unpack_ts_decl_wrtl_value_fields (struct bitpack_d
*bp
, tree expr
)
238 DECL_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
242 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
243 of expression EXPR from bitpack BP. */
246 unpack_ts_decl_with_vis_value_fields (struct bitpack_d
*bp
, tree expr
)
248 DECL_DEFER_OUTPUT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
249 DECL_COMMON (expr
) = (unsigned) bp_unpack_value (bp
, 1);
250 DECL_DLLIMPORT_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
251 DECL_WEAK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
252 DECL_SEEN_IN_BIND_EXPR_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
253 DECL_COMDAT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
254 DECL_VISIBILITY (expr
) = (enum symbol_visibility
) bp_unpack_value (bp
, 2);
255 DECL_VISIBILITY_SPECIFIED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
257 if (TREE_CODE (expr
) == VAR_DECL
)
259 DECL_HARD_REGISTER (expr
) = (unsigned) bp_unpack_value (bp
, 1);
260 DECL_IN_TEXT_SECTION (expr
) = (unsigned) bp_unpack_value (bp
, 1);
261 DECL_IN_CONSTANT_POOL (expr
) = (unsigned) bp_unpack_value (bp
, 1);
262 DECL_TLS_MODEL (expr
) = (enum tls_model
) bp_unpack_value (bp
, 3);
265 if (VAR_OR_FUNCTION_DECL_P (expr
))
268 p
= (priority_type
) bp_unpack_var_len_unsigned (bp
);
269 SET_DECL_INIT_PRIORITY (expr
, p
);
274 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
275 of expression EXPR from bitpack BP. */
278 unpack_ts_function_decl_value_fields (struct bitpack_d
*bp
, tree expr
)
280 DECL_BUILT_IN_CLASS (expr
) = bp_unpack_enum (bp
, built_in_class
,
282 DECL_STATIC_CONSTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
283 DECL_STATIC_DESTRUCTOR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
284 DECL_UNINLINABLE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
285 DECL_POSSIBLY_INLINED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
286 DECL_IS_NOVOPS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
287 DECL_IS_RETURNS_TWICE (expr
) = (unsigned) bp_unpack_value (bp
, 1);
288 DECL_IS_MALLOC (expr
) = (unsigned) bp_unpack_value (bp
, 1);
289 DECL_IS_OPERATOR_NEW (expr
) = (unsigned) bp_unpack_value (bp
, 1);
290 DECL_DECLARED_INLINE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
291 DECL_STATIC_CHAIN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
292 DECL_NO_INLINE_WARNING_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
293 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr
)
294 = (unsigned) bp_unpack_value (bp
, 1);
295 DECL_NO_LIMIT_STACK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
296 DECL_DISREGARD_INLINE_LIMITS (expr
) = (unsigned) bp_unpack_value (bp
, 1);
297 DECL_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
298 DECL_LOOPING_CONST_OR_PURE_P (expr
) = (unsigned) bp_unpack_value (bp
, 1);
299 if (DECL_BUILT_IN_CLASS (expr
) != NOT_BUILT_IN
)
301 DECL_FUNCTION_CODE (expr
) = (enum built_in_function
) bp_unpack_value (bp
,
303 if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_NORMAL
304 && DECL_FUNCTION_CODE (expr
) >= END_BUILTINS
)
305 fatal_error ("machine independent builtin code out of range");
306 else if (DECL_BUILT_IN_CLASS (expr
) == BUILT_IN_MD
)
308 tree result
= targetm
.builtin_decl (DECL_FUNCTION_CODE (expr
), true);
309 if (!result
|| result
== error_mark_node
)
310 fatal_error ("target specific builtin not available");
313 if (DECL_STATIC_DESTRUCTOR (expr
))
316 p
= (priority_type
) bp_unpack_var_len_unsigned (bp
);
317 SET_DECL_FINI_PRIORITY (expr
, p
);
322 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
323 of expression EXPR from bitpack BP. */
326 unpack_ts_type_common_value_fields (struct bitpack_d
*bp
, tree expr
)
328 enum machine_mode mode
;
330 mode
= bp_unpack_enum (bp
, machine_mode
, MAX_MACHINE_MODE
);
331 SET_TYPE_MODE (expr
, mode
);
332 TYPE_STRING_FLAG (expr
) = (unsigned) bp_unpack_value (bp
, 1);
333 TYPE_NO_FORCE_BLK (expr
) = (unsigned) bp_unpack_value (bp
, 1);
334 TYPE_NEEDS_CONSTRUCTING (expr
) = (unsigned) bp_unpack_value (bp
, 1);
335 if (RECORD_OR_UNION_TYPE_P (expr
))
336 TYPE_TRANSPARENT_AGGR (expr
) = (unsigned) bp_unpack_value (bp
, 1);
337 TYPE_PACKED (expr
) = (unsigned) bp_unpack_value (bp
, 1);
338 TYPE_RESTRICT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
339 TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr
)
340 = (unsigned) bp_unpack_value (bp
, 2);
341 TYPE_USER_ALIGN (expr
) = (unsigned) bp_unpack_value (bp
, 1);
342 TYPE_READONLY (expr
) = (unsigned) bp_unpack_value (bp
, 1);
343 TYPE_PRECISION (expr
) = bp_unpack_var_len_unsigned (bp
);
344 TYPE_ALIGN (expr
) = bp_unpack_var_len_unsigned (bp
);
345 TYPE_ALIAS_SET (expr
) = bp_unpack_var_len_int (bp
);
349 /* Unpack all the non-pointer fields of the TS_BLOCK structure
350 of expression EXPR from bitpack BP. */
353 unpack_ts_block_value_fields (struct bitpack_d
*bp
, tree expr
)
355 BLOCK_ABSTRACT (expr
) = (unsigned) bp_unpack_value (bp
, 1);
356 /* BLOCK_NUMBER is recomputed. */
359 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
360 structure of expression EXPR from bitpack BP. */
363 unpack_ts_translation_unit_decl_value_fields (struct bitpack_d
*bp ATTRIBUTE_UNUSED
, tree expr ATTRIBUTE_UNUSED
)
367 /* Unpack all the non-pointer fields in EXPR into a bit pack. */
370 unpack_value_fields (struct bitpack_d
*bp
, tree expr
)
374 code
= TREE_CODE (expr
);
376 /* Note that all these functions are highly sensitive to changes in
377 the types and sizes of each of the fields being packed. */
378 unpack_ts_base_value_fields (bp
, expr
);
380 if (CODE_CONTAINS_STRUCT (code
, TS_REAL_CST
))
381 unpack_ts_real_cst_value_fields (bp
, expr
);
383 if (CODE_CONTAINS_STRUCT (code
, TS_FIXED_CST
))
384 unpack_ts_fixed_cst_value_fields (bp
, expr
);
386 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
387 unpack_ts_decl_common_value_fields (bp
, expr
);
389 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WRTL
))
390 unpack_ts_decl_wrtl_value_fields (bp
, expr
);
392 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
393 unpack_ts_decl_with_vis_value_fields (bp
, expr
);
395 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
396 unpack_ts_function_decl_value_fields (bp
, expr
);
398 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
399 unpack_ts_type_common_value_fields (bp
, expr
);
401 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
402 unpack_ts_block_value_fields (bp
, expr
);
404 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
405 unpack_ts_translation_unit_decl_value_fields (bp
, expr
);
409 /* Read all the language-independent bitfield values for EXPR from IB.
410 Return the partially unpacked bitpack so the caller can unpack any other
411 bitfield values that the writer may have written. */
414 streamer_read_tree_bitfields (struct lto_input_block
*ib
, tree expr
)
419 /* Read the bitpack of non-pointer values from IB. */
420 bp
= streamer_read_bitpack (ib
);
422 /* The first word in BP contains the code of the tree that we
423 are about to read. */
424 code
= (enum tree_code
) bp_unpack_value (&bp
, 16);
425 lto_tag_check (lto_tree_code_to_tag (code
),
426 lto_tree_code_to_tag (TREE_CODE (expr
)));
428 /* Unpack all the value fields from BP. */
429 unpack_value_fields (&bp
, expr
);
435 /* Materialize a new tree from input block IB using descriptors in
436 DATA_IN. The code for the new tree should match TAG. Store in
437 *IX_P the index into the reader cache where the new tree is stored. */
440 streamer_alloc_tree (struct lto_input_block
*ib
, struct data_in
*data_in
,
445 #ifdef LTO_STREAMER_DEBUG
446 HOST_WIDEST_INT orig_address_in_writer
;
451 #ifdef LTO_STREAMER_DEBUG
452 /* Read the word representing the memory address for the tree
453 as it was written by the writer. This is useful when
454 debugging differences between the writer and reader. */
455 orig_address_in_writer
= streamer_read_hwi (ib
);
456 gcc_assert ((intptr_t) orig_address_in_writer
== orig_address_in_writer
);
459 code
= lto_tag_to_tree_code (tag
);
461 /* We should never see an SSA_NAME tree. Only the version numbers of
462 SSA names are ever written out. See input_ssa_names. */
463 gcc_assert (code
!= SSA_NAME
);
465 /* Instantiate a new tree using the header data. */
466 if (CODE_CONTAINS_STRUCT (code
, TS_STRING
))
467 result
= streamer_read_string_cst (data_in
, ib
);
468 else if (CODE_CONTAINS_STRUCT (code
, TS_IDENTIFIER
))
469 result
= input_identifier (data_in
, ib
);
470 else if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
472 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
473 result
= make_tree_vec (len
);
475 else if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
477 HOST_WIDE_INT len
= streamer_read_hwi (ib
);
478 result
= make_vector (len
);
480 else if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
482 unsigned HOST_WIDE_INT len
= streamer_read_uhwi (ib
);
483 result
= make_tree_binfo (len
);
485 else if (code
== CALL_EXPR
)
487 unsigned HOST_WIDE_INT nargs
= streamer_read_uhwi (ib
);
488 return build_vl_exp (CALL_EXPR
, nargs
+ 3);
492 /* For all other nodes, materialize the tree with a raw
494 result
= make_node (code
);
497 #ifdef LTO_STREAMER_DEBUG
498 /* Store the original address of the tree as seen by the writer
499 in RESULT's aux field. This is useful when debugging streaming
500 problems. This way, a debugging session can be started on
501 both writer and reader with a breakpoint using this address
503 lto_orig_address_map (result
, (intptr_t) orig_address_in_writer
);
510 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
511 block IB. DATA_IN contains tables and descriptors for the
516 lto_input_ts_common_tree_pointers (struct lto_input_block
*ib
,
517 struct data_in
*data_in
, tree expr
)
519 if (TREE_CODE (expr
) != IDENTIFIER_NODE
)
520 TREE_TYPE (expr
) = stream_read_tree (ib
, data_in
);
524 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
525 block IB. DATA_IN contains tables and descriptors for the
529 lto_input_ts_vector_tree_pointers (struct lto_input_block
*ib
,
530 struct data_in
*data_in
, tree expr
)
533 for (i
= 0; i
< VECTOR_CST_NELTS (expr
); ++i
)
534 VECTOR_CST_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
538 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
539 block IB. DATA_IN contains tables and descriptors for the
543 lto_input_ts_complex_tree_pointers (struct lto_input_block
*ib
,
544 struct data_in
*data_in
, tree expr
)
546 TREE_REALPART (expr
) = stream_read_tree (ib
, data_in
);
547 TREE_IMAGPART (expr
) = stream_read_tree (ib
, data_in
);
551 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
552 from input block IB. DATA_IN contains tables and descriptors for the
556 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block
*ib
,
557 struct data_in
*data_in
, tree expr
)
559 DECL_NAME (expr
) = stream_read_tree (ib
, data_in
);
560 DECL_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
561 DECL_SOURCE_LOCATION (expr
) = lto_input_location (ib
, data_in
);
565 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
566 input block IB. DATA_IN contains tables and descriptors for the
570 lto_input_ts_decl_common_tree_pointers (struct lto_input_block
*ib
,
571 struct data_in
*data_in
, tree expr
)
573 DECL_SIZE (expr
) = stream_read_tree (ib
, data_in
);
574 DECL_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
575 DECL_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
577 /* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
578 for early inlining so drop it on the floor instead of ICEing in
581 if (TREE_CODE (expr
) == PARM_DECL
)
582 TREE_CHAIN (expr
) = streamer_read_chain (ib
, data_in
);
584 if ((TREE_CODE (expr
) == VAR_DECL
585 || TREE_CODE (expr
) == PARM_DECL
)
586 && DECL_HAS_VALUE_EXPR_P (expr
))
587 SET_DECL_VALUE_EXPR (expr
, stream_read_tree (ib
, data_in
));
589 if (TREE_CODE (expr
) == VAR_DECL
)
591 tree dexpr
= stream_read_tree (ib
, data_in
);
593 SET_DECL_DEBUG_EXPR (expr
, dexpr
);
598 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
599 EXPR from input block IB. DATA_IN contains tables and descriptors for the
603 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block
*ib
,
604 struct data_in
*data_in
, tree expr
)
606 if (TREE_CODE (expr
) == FUNCTION_DECL
)
608 DECL_ARGUMENTS (expr
) = stream_read_tree (ib
, data_in
);
609 DECL_RESULT (expr
) = stream_read_tree (ib
, data_in
);
611 else if (TREE_CODE (expr
) == TYPE_DECL
)
612 DECL_ORIGINAL_TYPE (expr
) = stream_read_tree (ib
, data_in
);
613 DECL_VINDEX (expr
) = stream_read_tree (ib
, data_in
);
617 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
618 from input block IB. DATA_IN contains tables and descriptors for the
622 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block
*ib
,
623 struct data_in
*data_in
, tree expr
)
627 id
= stream_read_tree (ib
, data_in
);
630 gcc_assert (TREE_CODE (id
) == IDENTIFIER_NODE
);
631 SET_DECL_ASSEMBLER_NAME (expr
, id
);
634 DECL_SECTION_NAME (expr
) = stream_read_tree (ib
, data_in
);
635 DECL_COMDAT_GROUP (expr
) = stream_read_tree (ib
, data_in
);
639 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
640 input block IB. DATA_IN contains tables and descriptors for the
644 lto_input_ts_field_decl_tree_pointers (struct lto_input_block
*ib
,
645 struct data_in
*data_in
, tree expr
)
647 DECL_FIELD_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
648 DECL_BIT_FIELD_TYPE (expr
) = stream_read_tree (ib
, data_in
);
649 DECL_BIT_FIELD_REPRESENTATIVE (expr
) = stream_read_tree (ib
, data_in
);
650 DECL_FIELD_BIT_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
651 DECL_FCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
655 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
656 from input block IB. DATA_IN contains tables and descriptors for the
660 lto_input_ts_function_decl_tree_pointers (struct lto_input_block
*ib
,
661 struct data_in
*data_in
, tree expr
)
663 /* DECL_STRUCT_FUNCTION is handled by lto_input_function. FIXME lto,
664 maybe it should be handled here? */
665 DECL_FUNCTION_PERSONALITY (expr
) = stream_read_tree (ib
, data_in
);
666 DECL_FUNCTION_SPECIFIC_TARGET (expr
) = stream_read_tree (ib
, data_in
);
667 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr
) = stream_read_tree (ib
, data_in
);
669 /* If the file contains a function with an EH personality set,
670 then it was compiled with -fexceptions. In that case, initialize
671 the backend EH machinery. */
672 if (DECL_FUNCTION_PERSONALITY (expr
))
677 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
678 input block IB. DATA_IN contains tables and descriptors for the file
682 lto_input_ts_type_common_tree_pointers (struct lto_input_block
*ib
,
683 struct data_in
*data_in
, tree expr
)
685 TYPE_SIZE (expr
) = stream_read_tree (ib
, data_in
);
686 TYPE_SIZE_UNIT (expr
) = stream_read_tree (ib
, data_in
);
687 TYPE_ATTRIBUTES (expr
) = stream_read_tree (ib
, data_in
);
688 TYPE_NAME (expr
) = stream_read_tree (ib
, data_in
);
689 /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
690 reconstructed during fixup. */
691 /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
693 TYPE_MAIN_VARIANT (expr
) = stream_read_tree (ib
, data_in
);
694 TYPE_CONTEXT (expr
) = stream_read_tree (ib
, data_in
);
695 /* TYPE_CANONICAL gets re-computed during type merging. */
696 TYPE_CANONICAL (expr
) = NULL_TREE
;
697 TYPE_STUB_DECL (expr
) = stream_read_tree (ib
, data_in
);
700 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
701 from input block IB. DATA_IN contains tables and descriptors for the
705 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block
*ib
,
706 struct data_in
*data_in
,
709 if (TREE_CODE (expr
) == ENUMERAL_TYPE
)
710 TYPE_VALUES (expr
) = stream_read_tree (ib
, data_in
);
711 else if (TREE_CODE (expr
) == ARRAY_TYPE
)
712 TYPE_DOMAIN (expr
) = stream_read_tree (ib
, data_in
);
713 else if (RECORD_OR_UNION_TYPE_P (expr
))
714 TYPE_FIELDS (expr
) = streamer_read_chain (ib
, data_in
);
715 else if (TREE_CODE (expr
) == FUNCTION_TYPE
716 || TREE_CODE (expr
) == METHOD_TYPE
)
717 TYPE_ARG_TYPES (expr
) = stream_read_tree (ib
, data_in
);
719 if (!POINTER_TYPE_P (expr
))
720 TYPE_MINVAL (expr
) = stream_read_tree (ib
, data_in
);
721 TYPE_MAXVAL (expr
) = stream_read_tree (ib
, data_in
);
722 if (RECORD_OR_UNION_TYPE_P (expr
))
723 TYPE_BINFO (expr
) = stream_read_tree (ib
, data_in
);
727 /* Read all pointer fields in the TS_LIST structure of EXPR from input
728 block IB. DATA_IN contains tables and descriptors for the
732 lto_input_ts_list_tree_pointers (struct lto_input_block
*ib
,
733 struct data_in
*data_in
, tree expr
)
735 TREE_PURPOSE (expr
) = stream_read_tree (ib
, data_in
);
736 TREE_VALUE (expr
) = stream_read_tree (ib
, data_in
);
737 TREE_CHAIN (expr
) = streamer_read_chain (ib
, data_in
);
741 /* Read all pointer fields in the TS_VEC structure of EXPR from input
742 block IB. DATA_IN contains tables and descriptors for the
746 lto_input_ts_vec_tree_pointers (struct lto_input_block
*ib
,
747 struct data_in
*data_in
, tree expr
)
751 /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
753 for (i
= 0; i
< TREE_VEC_LENGTH (expr
); i
++)
754 TREE_VEC_ELT (expr
, i
) = stream_read_tree (ib
, data_in
);
758 /* Read all pointer fields in the TS_EXP structure of EXPR from input
759 block IB. DATA_IN contains tables and descriptors for the
764 lto_input_ts_exp_tree_pointers (struct lto_input_block
*ib
,
765 struct data_in
*data_in
, tree expr
)
770 length
= streamer_read_hwi (ib
);
771 gcc_assert (length
== TREE_OPERAND_LENGTH (expr
));
773 for (i
= 0; i
< length
; i
++)
774 TREE_OPERAND (expr
, i
) = stream_read_tree (ib
, data_in
);
776 loc
= lto_input_location (ib
, data_in
);
777 SET_EXPR_LOCATION (expr
, loc
);
778 TREE_BLOCK (expr
) = stream_read_tree (ib
, data_in
);
782 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
783 block IB. DATA_IN contains tables and descriptors for the
787 lto_input_ts_block_tree_pointers (struct lto_input_block
*ib
,
788 struct data_in
*data_in
, tree expr
)
790 /* Do not stream BLOCK_SOURCE_LOCATION. We cannot handle debug information
791 for early inlining so drop it on the floor instead of ICEing in
793 BLOCK_VARS (expr
) = streamer_read_chain (ib
, data_in
);
795 /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
796 for early inlining so drop it on the floor instead of ICEing in
799 BLOCK_SUPERCONTEXT (expr
) = stream_read_tree (ib
, data_in
);
801 /* Do not stream BLOCK_ABSTRACT_ORIGIN. We cannot handle debug information
802 for early inlining so drop it on the floor instead of ICEing in
804 BLOCK_FRAGMENT_ORIGIN (expr
) = stream_read_tree (ib
, data_in
);
805 BLOCK_FRAGMENT_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
807 /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
808 of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
809 stream the child relationship explicitly. */
810 if (BLOCK_SUPERCONTEXT (expr
)
811 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == BLOCK
)
813 BLOCK_CHAIN (expr
) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
));
814 BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr
)) = expr
;
817 /* The global block is rooted at the TU decl. Hook it here to
818 avoid the need to stream in this block during WPA time. */
819 else if (BLOCK_SUPERCONTEXT (expr
)
820 && TREE_CODE (BLOCK_SUPERCONTEXT (expr
)) == TRANSLATION_UNIT_DECL
)
821 DECL_INITIAL (BLOCK_SUPERCONTEXT (expr
)) = expr
;
823 /* The function-level block is connected at the time we read in
824 function bodies for the same reason. */
828 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
829 block IB. DATA_IN contains tables and descriptors for the
833 lto_input_ts_binfo_tree_pointers (struct lto_input_block
*ib
,
834 struct data_in
*data_in
, tree expr
)
839 /* Note that the number of slots in EXPR was read in
840 streamer_alloc_tree when instantiating EXPR. However, the
841 vector is empty so we cannot rely on VEC_length to know how many
842 elements to read. So, this list is emitted as a 0-terminated
843 list on the writer side. */
846 t
= stream_read_tree (ib
, data_in
);
848 VEC_quick_push (tree
, BINFO_BASE_BINFOS (expr
), t
);
852 BINFO_OFFSET (expr
) = stream_read_tree (ib
, data_in
);
853 BINFO_VTABLE (expr
) = stream_read_tree (ib
, data_in
);
854 BINFO_VPTR_FIELD (expr
) = stream_read_tree (ib
, data_in
);
856 len
= streamer_read_uhwi (ib
);
859 VEC_reserve_exact (tree
, gc
, BINFO_BASE_ACCESSES (expr
), len
);
860 for (i
= 0; i
< len
; i
++)
862 tree a
= stream_read_tree (ib
, data_in
);
863 VEC_quick_push (tree
, BINFO_BASE_ACCESSES (expr
), a
);
867 BINFO_INHERITANCE_CHAIN (expr
) = stream_read_tree (ib
, data_in
);
868 BINFO_SUBVTT_INDEX (expr
) = stream_read_tree (ib
, data_in
);
869 BINFO_VPTR_INDEX (expr
) = stream_read_tree (ib
, data_in
);
873 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
874 input block IB. DATA_IN contains tables and descriptors for the
878 lto_input_ts_constructor_tree_pointers (struct lto_input_block
*ib
,
879 struct data_in
*data_in
, tree expr
)
883 len
= streamer_read_uhwi (ib
);
884 for (i
= 0; i
< len
; i
++)
888 index
= stream_read_tree (ib
, data_in
);
889 value
= stream_read_tree (ib
, data_in
);
890 CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (expr
), index
, value
);
895 /* Input a TS_TARGET_OPTION tree from IB into EXPR. */
898 lto_input_ts_target_option (struct lto_input_block
*ib
, tree expr
)
902 struct cl_target_option
*t
= TREE_TARGET_OPTION (expr
);
904 bp
= streamer_read_bitpack (ib
);
905 len
= sizeof (struct cl_target_option
);
906 for (i
= 0; i
< len
; i
++)
907 ((unsigned char *)t
)[i
] = bp_unpack_value (&bp
, 8);
908 if (bp_unpack_value (&bp
, 32) != 0x12345678)
909 fatal_error ("cl_target_option size mismatch in LTO reader and writer");
912 /* Input a TS_OPTIMIZATION tree from IB into EXPR. */
915 lto_input_ts_optimization (struct lto_input_block
*ib
, tree expr
)
919 struct cl_optimization
*t
= TREE_OPTIMIZATION (expr
);
921 bp
= streamer_read_bitpack (ib
);
922 len
= sizeof (struct cl_optimization
);
923 for (i
= 0; i
< len
; i
++)
924 ((unsigned char *)t
)[i
] = bp_unpack_value (&bp
, 8);
925 if (bp_unpack_value (&bp
, 32) != 0x12345678)
926 fatal_error ("cl_optimization size mismatch in LTO reader and writer");
929 /* Input a TS_TRANSLATION_UNIT_DECL tree from IB and DATA_IN into EXPR. */
932 lto_input_ts_translation_unit_decl_tree_pointers (struct lto_input_block
*ib
,
933 struct data_in
*data_in
,
936 TRANSLATION_UNIT_LANGUAGE (expr
) = xstrdup (streamer_read_string (data_in
, ib
));
937 VEC_safe_push (tree
, gc
, all_translation_units
, expr
);
940 /* Read all pointer fields in EXPR from input block IB. DATA_IN
941 contains tables and descriptors for the file being read. */
944 streamer_read_tree_body (struct lto_input_block
*ib
, struct data_in
*data_in
,
949 code
= TREE_CODE (expr
);
951 if (CODE_CONTAINS_STRUCT (code
, TS_TYPED
))
952 lto_input_ts_common_tree_pointers (ib
, data_in
, expr
);
954 if (CODE_CONTAINS_STRUCT (code
, TS_VECTOR
))
955 lto_input_ts_vector_tree_pointers (ib
, data_in
, expr
);
957 if (CODE_CONTAINS_STRUCT (code
, TS_COMPLEX
))
958 lto_input_ts_complex_tree_pointers (ib
, data_in
, expr
);
960 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_MINIMAL
))
961 lto_input_ts_decl_minimal_tree_pointers (ib
, data_in
, expr
);
963 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
964 lto_input_ts_decl_common_tree_pointers (ib
, data_in
, expr
);
966 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_NON_COMMON
))
967 lto_input_ts_decl_non_common_tree_pointers (ib
, data_in
, expr
);
969 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_WITH_VIS
))
970 lto_input_ts_decl_with_vis_tree_pointers (ib
, data_in
, expr
);
972 if (CODE_CONTAINS_STRUCT (code
, TS_FIELD_DECL
))
973 lto_input_ts_field_decl_tree_pointers (ib
, data_in
, expr
);
975 if (CODE_CONTAINS_STRUCT (code
, TS_FUNCTION_DECL
))
976 lto_input_ts_function_decl_tree_pointers (ib
, data_in
, expr
);
978 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_COMMON
))
979 lto_input_ts_type_common_tree_pointers (ib
, data_in
, expr
);
981 if (CODE_CONTAINS_STRUCT (code
, TS_TYPE_NON_COMMON
))
982 lto_input_ts_type_non_common_tree_pointers (ib
, data_in
, expr
);
984 if (CODE_CONTAINS_STRUCT (code
, TS_LIST
))
985 lto_input_ts_list_tree_pointers (ib
, data_in
, expr
);
987 if (CODE_CONTAINS_STRUCT (code
, TS_VEC
))
988 lto_input_ts_vec_tree_pointers (ib
, data_in
, expr
);
990 if (CODE_CONTAINS_STRUCT (code
, TS_EXP
))
991 lto_input_ts_exp_tree_pointers (ib
, data_in
, expr
);
993 if (CODE_CONTAINS_STRUCT (code
, TS_BLOCK
))
994 lto_input_ts_block_tree_pointers (ib
, data_in
, expr
);
996 if (CODE_CONTAINS_STRUCT (code
, TS_BINFO
))
997 lto_input_ts_binfo_tree_pointers (ib
, data_in
, expr
);
999 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
1000 lto_input_ts_constructor_tree_pointers (ib
, data_in
, expr
);
1002 if (CODE_CONTAINS_STRUCT (code
, TS_TARGET_OPTION
))
1003 lto_input_ts_target_option (ib
, expr
);
1005 if (CODE_CONTAINS_STRUCT (code
, TS_OPTIMIZATION
))
1006 lto_input_ts_optimization (ib
, expr
);
1008 if (CODE_CONTAINS_STRUCT (code
, TS_TRANSLATION_UNIT_DECL
))
1009 lto_input_ts_translation_unit_decl_tree_pointers (ib
, data_in
, expr
);
1013 /* Read and INTEGER_CST node from input block IB using the per-file
1014 context in DATA_IN. */
1017 streamer_read_integer_cst (struct lto_input_block
*ib
, struct data_in
*data_in
)
1020 HOST_WIDE_INT low
, high
;
1023 type
= stream_read_tree (ib
, data_in
);
1024 overflow_p
= (streamer_read_uchar (ib
) != 0);
1025 low
= streamer_read_uhwi (ib
);
1026 high
= streamer_read_uhwi (ib
);
1027 result
= build_int_cst_wide (type
, low
, high
);
1029 /* If the original constant had overflown, build a replica of RESULT to
1030 avoid modifying the shared constant returned by build_int_cst_wide. */
1033 result
= copy_node (result
);
1034 TREE_OVERFLOW (result
) = 1;
1041 /* Read an index IX from input block IB and return the tree node at
1042 DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
1045 streamer_get_pickled_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1047 unsigned HOST_WIDE_INT ix
;
1049 enum LTO_tags expected_tag
;
1051 ix
= streamer_read_uhwi (ib
);
1052 expected_tag
= streamer_read_enum (ib
, LTO_tags
, LTO_NUM_TAGS
);
1054 result
= streamer_tree_cache_get (data_in
->reader_cache
, ix
);
1056 && TREE_CODE (result
) == lto_tag_to_tree_code (expected_tag
));
1062 /* Read a code and class from input block IB and return the
1063 corresponding builtin. DATA_IN is as in stream_read_tree. */
1066 streamer_get_builtin_tree (struct lto_input_block
*ib
, struct data_in
*data_in
)
1068 enum built_in_class fclass
;
1069 enum built_in_function fcode
;
1070 const char *asmname
;
1073 fclass
= streamer_read_enum (ib
, built_in_class
, BUILT_IN_LAST
);
1074 gcc_assert (fclass
== BUILT_IN_NORMAL
|| fclass
== BUILT_IN_MD
);
1076 fcode
= (enum built_in_function
) streamer_read_uhwi (ib
);
1078 if (fclass
== BUILT_IN_NORMAL
)
1080 if (fcode
>= END_BUILTINS
)
1081 fatal_error ("machine independent builtin code out of range");
1082 result
= builtin_decl_explicit (fcode
);
1083 gcc_assert (result
);
1085 else if (fclass
== BUILT_IN_MD
)
1087 result
= targetm
.builtin_decl (fcode
, true);
1088 if (!result
|| result
== error_mark_node
)
1089 fatal_error ("target specific builtin not available");
1094 asmname
= streamer_read_string (data_in
, ib
);
1096 set_builtin_user_assembler_name (result
, asmname
);
1098 streamer_tree_cache_append (data_in
->reader_cache
, result
);