1 /* Routines for reading trees from a file stream.
2 
3    Copyright (C) 2011-2018 Free Software Foundation, Inc.
4    Contributed by Diego Novillo <dnovillo@google.com>
5 
6 This file is part of GCC.
7 
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
12 
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16 for more details.
17 
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/>.  */
21 
22 #include "config.h"
23 #include "system.h"
24 #include "coretypes.h"
25 #include "backend.h"
26 #include "target.h"
27 #include "tree.h"
28 #include "gimple.h"
29 #include "stringpool.h"
30 #include "tree-streamer.h"
31 #include "cgraph.h"
32 #include "builtins.h"
33 #include "ipa-chkp.h"
34 #include "gomp-constants.h"
35 #include "stringpool.h"
36 #include "attribs.h"
37 #include "asan.h"
38 #include "opts.h"
39 
40 
41 /* Read a STRING_CST from the string table in DATA_IN using input
42    block IB.  */
43 
44 tree
45 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
46 {
47   unsigned int len;
48   const char * ptr;
49 
50   ptr = streamer_read_indexed_string (data_in, ib, &len);
51   if (!ptr)
52     return NULL;
53   return build_string (len, ptr);
54 }
55 
56 
57 /* Read an IDENTIFIER from the string table in DATA_IN using input
58    block IB.  */
59 
60 static tree
61 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
62 {
63   unsigned int len;
64   const char *ptr;
65 
66   ptr = streamer_read_indexed_string (data_in, ib, &len);
67   if (!ptr)
68     return NULL;
69   return get_identifier_with_length (ptr, len);
70 }
71 
72 
73 /* Read a chain of tree nodes from input block IB. DATA_IN contains
74    tables and descriptors for the file being read.  */
75 
76 tree
77 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
78 {
79   tree first, prev, curr;
80 
81   /* The chain is written as NULL terminated list of trees.  */
82   first = prev = NULL_TREE;
83   do
84     {
85       curr = stream_read_tree (ib, data_in);
86       if (prev)
87 	TREE_CHAIN (prev) = curr;
88       else
89 	first = curr;
90 
91       prev = curr;
92     }
93   while (curr);
94 
95   return first;
96 }
97 
98 
99 /* Unpack all the non-pointer fields of the TS_BASE structure of
100    expression EXPR from bitpack BP.  */
101 
102 static inline void
103 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
104 {
105   /* Note that the code for EXPR has already been unpacked to create EXPR in
106      streamer_alloc_tree.  */
107   if (!TYPE_P (expr))
108     {
109       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
110       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
111       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
112 
113       /* TREE_PUBLIC is used on types to indicate that the type
114 	 has a TYPE_CACHED_VALUES vector.  This is not streamed out,
115 	 so we skip it here.  */
116       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
117     }
118   else
119     bp_unpack_value (bp, 4);
120   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
121   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
122   if (DECL_P (expr))
123     {
124       DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
125       DECL_NAMELESS (expr) = (unsigned) bp_unpack_value (bp, 1);
126     }
127   else if (TYPE_P (expr))
128     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
129   else
130     bp_unpack_value (bp, 1);
131   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
132   if (TYPE_P (expr))
133     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
134   else
135     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
136   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
137   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
138   if (TREE_CODE (expr) != TREE_BINFO)
139     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
140   else
141     bp_unpack_value (bp, 1);
142   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
143   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
144   if (TYPE_P (expr))
145     {
146       if (AGGREGATE_TYPE_P (expr))
147 	TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
148       else
149 	TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
150       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
151     }
152   else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
153     {
154       REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
155       bp_unpack_value (bp, 8);
156     }
157   else if (TREE_CODE (expr) == SSA_NAME)
158     {
159       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
160       bp_unpack_value (bp, 8);
161     }
162   else if (TREE_CODE (expr) == CALL_EXPR)
163     {
164       CALL_EXPR_BY_DESCRIPTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
165       bp_unpack_value (bp, 8);
166     }
167   else
168     bp_unpack_value (bp, 9);
169 }
170 
171 
172 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
173    expression EXPR from bitpack BP.  */
174 
175 static void
176 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
177 {
178   int i;
179   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
180     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
181 }
182 
183 
184 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
185    expression EXPR from bitpack BP.  */
186 
187 static void
188 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
189 {
190   unsigned i;
191   REAL_VALUE_TYPE r;
192   REAL_VALUE_TYPE *rp;
193 
194   /* Clear all bits of the real value type so that we can later do
195      bitwise comparisons to see if two values are the same.  */
196   memset (&r, 0, sizeof r);
197   r.cl = (unsigned) bp_unpack_value (bp, 2);
198   r.decimal = (unsigned) bp_unpack_value (bp, 1);
199   r.sign = (unsigned) bp_unpack_value (bp, 1);
200   r.signalling = (unsigned) bp_unpack_value (bp, 1);
201   r.canonical = (unsigned) bp_unpack_value (bp, 1);
202   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
203   for (i = 0; i < SIGSZ; i++)
204     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
205 
206   rp = ggc_alloc<real_value> ();
207   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
208   TREE_REAL_CST_PTR (expr) = rp;
209 }
210 
211 
212 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
213    expression EXPR from bitpack BP.  */
214 
215 static void
216 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
217 {
218   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
219   fp->mode = as_a <scalar_mode> (bp_unpack_machine_mode (bp));
220   fp->data.low = bp_unpack_var_len_int (bp);
221   fp->data.high = bp_unpack_var_len_int (bp);
222   TREE_FIXED_CST_PTR (expr) = fp;
223 }
224 
225 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
226    of expression EXPR from bitpack BP.  */
227 
228 static void
229 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
230 {
231   SET_DECL_MODE (expr, bp_unpack_machine_mode (bp));
232   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
233   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
234   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
235   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
236   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
237   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
238   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
239   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
240   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
241   SET_DECL_ALIGN (expr, (unsigned) bp_unpack_var_len_unsigned (bp));
242 #ifdef ACCEL_COMPILER
243   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
244     SET_DECL_ALIGN (expr, targetm.absolute_biggest_alignment);
245 #endif
246   if (TREE_CODE (expr) == LABEL_DECL)
247     {
248       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
249 
250       /* Always assume an initial value of -1 for LABEL_DECL_UID to
251 	 force gimple_set_bb to recreate label_to_block_map.  */
252       LABEL_DECL_UID (expr) = -1;
253     }
254 
255   if (TREE_CODE (expr) == FIELD_DECL)
256     {
257       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
258       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
259       DECL_PADDING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
260       expr->decl_common.off_align = bp_unpack_value (bp, 8);
261     }
262 
263   if (VAR_P (expr))
264     {
265       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
266       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
267     }
268 
269   if (TREE_CODE (expr) == RESULT_DECL
270       || TREE_CODE (expr) == PARM_DECL
271       || VAR_P (expr))
272     {
273       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
274       if (VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
275 	DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
276     }
277 }
278 
279 
280 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
281    of expression EXPR from bitpack BP.  */
282 
283 static void
284 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
285 {
286   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
287 }
288 
289 
290 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
291    of expression EXPR from bitpack BP.  */
292 
293 static void
294 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
295 {
296   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
297   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
298   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
299   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
300   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
301   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
302   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
303 
304   if (VAR_P (expr))
305     {
306       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
307       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
308     }
309 
310   if (TREE_CODE (expr) == FUNCTION_DECL)
311     {
312       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
313       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
314       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
315     }
316 }
317 
318 
319 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
320    of expression EXPR from bitpack BP.  */
321 
322 static void
323 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
324 {
325   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
326 					       BUILT_IN_LAST);
327   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
328   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
329   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
330   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
331   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
332   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
333   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
334   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
335   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
336   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
337   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
338   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
339     			= (unsigned) bp_unpack_value (bp, 1);
340   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
341   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
342   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
343   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
344   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
345     {
346       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
347 	                                                                    12);
348       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
349 	  && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
350 	fatal_error (input_location,
351 		     "machine independent builtin code out of range");
352       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
353 	{
354           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
355 	  if (!result || result == error_mark_node)
356 	    fatal_error (input_location,
357 			 "target specific builtin not available");
358 	}
359     }
360 }
361 
362 
363 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
364    of expression EXPR from bitpack BP.  */
365 
366 static void
367 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
368 {
369   machine_mode mode;
370 
371   mode = bp_unpack_machine_mode (bp);
372   SET_TYPE_MODE (expr, mode);
373   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
374   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
375      no streaming.  */
376   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
377   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
378   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
379   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
380   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
381   if (RECORD_OR_UNION_TYPE_P (expr))
382     {
383       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
384       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
385     }
386   else if (TREE_CODE (expr) == ARRAY_TYPE)
387     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
388   if (AGGREGATE_TYPE_P (expr))
389     TYPE_TYPELESS_STORAGE (expr) = (unsigned) bp_unpack_value (bp, 1);
390   TYPE_EMPTY_P (expr) = (unsigned) bp_unpack_value (bp, 1);
391   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
392   SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
393 #ifdef ACCEL_COMPILER
394   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
395     SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
396 #endif
397 }
398 
399 
400 /* Unpack all the non-pointer fields of the TS_BLOCK structure
401    of expression EXPR from bitpack BP.  */
402 
403 static void
404 unpack_ts_block_value_fields (struct data_in *data_in,
405 			      struct bitpack_d *bp, tree expr)
406 {
407   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
408   /* BLOCK_NUMBER is recomputed.  */
409   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
410 }
411 
412 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
413    structure of expression EXPR from bitpack BP.  */
414 
415 static void
416 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
417 					      struct bitpack_d *bp, tree expr)
418 {
419   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
420   vec_safe_push (all_translation_units, expr);
421 }
422 
423 
424 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
425    structure of expression EXPR from bitpack BP.  */
426 
427 static void
428 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
429 				   struct bitpack_d *bp, tree expr)
430 {
431   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
432   switch (OMP_CLAUSE_CODE (expr))
433     {
434     case OMP_CLAUSE_DEFAULT:
435       OMP_CLAUSE_DEFAULT_KIND (expr)
436 	= bp_unpack_enum (bp, omp_clause_default_kind,
437 			  OMP_CLAUSE_DEFAULT_LAST);
438       break;
439     case OMP_CLAUSE_SCHEDULE:
440       OMP_CLAUSE_SCHEDULE_KIND (expr)
441 	= bp_unpack_enum (bp, omp_clause_schedule_kind,
442 			  OMP_CLAUSE_SCHEDULE_LAST);
443       break;
444     case OMP_CLAUSE_DEPEND:
445       OMP_CLAUSE_DEPEND_KIND (expr)
446 	= bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
447       break;
448     case OMP_CLAUSE_MAP:
449       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
450 						     GOMP_MAP_LAST));
451       break;
452     case OMP_CLAUSE_PROC_BIND:
453       OMP_CLAUSE_PROC_BIND_KIND (expr)
454 	= bp_unpack_enum (bp, omp_clause_proc_bind_kind,
455 			  OMP_CLAUSE_PROC_BIND_LAST);
456       break;
457     case OMP_CLAUSE_REDUCTION:
458       OMP_CLAUSE_REDUCTION_CODE (expr)
459 	= bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
460       break;
461     default:
462       break;
463     }
464 }
465 
466 
467 /* Read all the language-independent bitfield values for EXPR from IB.
468    Return the partially unpacked bitpack so the caller can unpack any other
469    bitfield values that the writer may have written.  */
470 
471 void
472 streamer_read_tree_bitfields (struct lto_input_block *ib,
473 			      struct data_in *data_in, tree expr)
474 {
475   enum tree_code code;
476   struct bitpack_d bp;
477 
478   /* Read the bitpack of non-pointer values from IB.  */
479   bp = streamer_read_bitpack (ib);
480 
481   /* The first word in BP contains the code of the tree that we
482      are about to read.  */
483   code = (enum tree_code) bp_unpack_value (&bp, 16);
484   lto_tag_check (lto_tree_code_to_tag (code),
485 		 lto_tree_code_to_tag (TREE_CODE (expr)));
486 
487   /* Note that all these functions are highly sensitive to changes in
488      the types and sizes of each of the fields being packed.  */
489   unpack_ts_base_value_fields (&bp, expr);
490 
491   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
492     unpack_ts_int_cst_value_fields (&bp, expr);
493 
494   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
495     unpack_ts_real_cst_value_fields (&bp, expr);
496 
497   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
498     unpack_ts_fixed_cst_value_fields (&bp, expr);
499 
500   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
501     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
502 
503   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
504     unpack_ts_decl_common_value_fields (&bp, expr);
505 
506   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
507     unpack_ts_decl_wrtl_value_fields (&bp, expr);
508 
509   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
510     unpack_ts_decl_with_vis_value_fields (&bp, expr);
511 
512   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
513     unpack_ts_function_decl_value_fields (&bp, expr);
514 
515   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
516     unpack_ts_type_common_value_fields (&bp, expr);
517 
518   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
519     {
520       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
521       if (code == MEM_REF
522 	  || code == TARGET_MEM_REF)
523 	{
524 	  MR_DEPENDENCE_CLIQUE (expr)
525 	    = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
526 	  if (MR_DEPENDENCE_CLIQUE (expr) != 0)
527 	    MR_DEPENDENCE_BASE (expr)
528 	      = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
529 	}
530       else if (code == CALL_EXPR)
531 	CALL_EXPR_IFN (expr) = bp_unpack_enum (&bp, internal_fn, IFN_LAST);
532     }
533 
534   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
535     unpack_ts_block_value_fields (data_in, &bp, expr);
536 
537   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
538     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
539 
540   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
541     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
542 
543   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
544     {
545       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
546       if (length > 0)
547 	vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
548     }
549 
550   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
551     {
552       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
553       if (length > 0)
554 	vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
555     }
556 
557 #ifndef ACCEL_COMPILER
558   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
559     {
560       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
561       if (targetm.target_option.post_stream_in)
562 	targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
563     }
564 #endif
565 
566   if (code == OMP_CLAUSE)
567     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
568 }
569 
570 
571 /* Materialize a new tree from input block IB using descriptors in
572    DATA_IN.  The code for the new tree should match TAG.  Store in
573    *IX_P the index into the reader cache where the new tree is stored.  */
574 
575 tree
576 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
577 		     enum LTO_tags tag)
578 {
579   enum tree_code code;
580   tree result;
581 
582   result = NULL_TREE;
583 
584   code = lto_tag_to_tree_code (tag);
585 
586   /* We should never see an SSA_NAME tree.  Only the version numbers of
587      SSA names are ever written out.  See input_ssa_names.  */
588   gcc_assert (code != SSA_NAME);
589 
590   /* Instantiate a new tree using the header data.  */
591   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
592     result = streamer_read_string_cst (data_in, ib);
593   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
594     result = input_identifier (data_in, ib);
595   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
596     {
597       HOST_WIDE_INT len = streamer_read_hwi (ib);
598       result = make_tree_vec (len);
599     }
600   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
601     {
602       bitpack_d bp = streamer_read_bitpack (ib);
603       unsigned int log2_npatterns = bp_unpack_value (&bp, 8);
604       unsigned int nelts_per_pattern = bp_unpack_value (&bp, 8);
605       result = make_vector (log2_npatterns, nelts_per_pattern);
606     }
607   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
608     {
609       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
610       result = make_tree_binfo (len);
611     }
612   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
613     {
614       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
615       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
616       result = make_int_cst (len, ext_len);
617     }
618   else if (code == CALL_EXPR)
619     {
620       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
621       return build_vl_exp (CALL_EXPR, nargs + 3);
622     }
623   else if (code == OMP_CLAUSE)
624     {
625       enum omp_clause_code subcode
626 	= (enum omp_clause_code) streamer_read_uhwi (ib);
627       return build_omp_clause (UNKNOWN_LOCATION, subcode);
628     }
629   else
630     {
631       /* For all other nodes, materialize the tree with a raw
632 	 make_node call.  */
633       result = make_node (code);
634     }
635 
636   return result;
637 }
638 
639 
640 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
641    block IB.  DATA_IN contains tables and descriptors for the
642    file being read.  */
643 
644 
645 static void
646 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
647 				   struct data_in *data_in, tree expr)
648 {
649   if (TREE_CODE (expr) != IDENTIFIER_NODE)
650     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
651 }
652 
653 
654 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
655    block IB.  DATA_IN contains tables and descriptors for the
656    file being read.  */
657 
658 static void
659 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
660 				   struct data_in *data_in, tree expr)
661 {
662   unsigned int count = vector_cst_encoded_nelts (expr);
663   for (unsigned int i = 0; i < count; ++i)
664     VECTOR_CST_ENCODED_ELT (expr, i) = stream_read_tree (ib, data_in);
665 }
666 
667 
668 /* Read all pointer fields in the TS_POLY_INT_CST structure of EXPR from
669    input block IB.  DATA_IN contains tables and descriptors for the
670    file being read.  */
671 
672 static void
673 lto_input_ts_poly_tree_pointers (struct lto_input_block *ib,
674 				 struct data_in *data_in, tree expr)
675 {
676   for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
677     POLY_INT_CST_COEFF (expr, i) = stream_read_tree (ib, data_in);
678 }
679 
680 
681 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
682    block IB.  DATA_IN contains tables and descriptors for the
683    file being read.  */
684 
685 static void
686 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
687 				    struct data_in *data_in, tree expr)
688 {
689   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
690   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
691 }
692 
693 
694 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
695    from input block IB.  DATA_IN contains tables and descriptors for the
696    file being read.  */
697 
698 static void
699 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
700 					 struct data_in *data_in, tree expr)
701 {
702   DECL_NAME (expr) = stream_read_tree (ib, data_in);
703   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
704 }
705 
706 
707 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
708    input block IB.  DATA_IN contains tables and descriptors for the
709    file being read.  */
710 
711 static void
712 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
713 					struct data_in *data_in, tree expr)
714 {
715   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
716   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
717   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
718   DECL_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
719 
720   if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
721       && DECL_HAS_VALUE_EXPR_P (expr))
722     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
723 
724   if (VAR_P (expr)
725       && DECL_HAS_DEBUG_EXPR_P (expr))
726     {
727       tree dexpr = stream_read_tree (ib, data_in);
728       if (dexpr)
729 	SET_DECL_DEBUG_EXPR (expr, dexpr);
730     }
731 }
732 
733 
734 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
735    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
736    file being read.  */
737 
738 static void
739 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
740 					    struct data_in *data_in, tree expr)
741 {
742   if (TREE_CODE (expr) == TYPE_DECL)
743     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
744 }
745 
746 
747 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
748    from input block IB.  DATA_IN contains tables and descriptors for the
749    file being read.  */
750 
751 static void
752 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
753 				          struct data_in *data_in, tree expr)
754 {
755   tree id;
756 
757   id = stream_read_tree (ib, data_in);
758   if (id)
759     {
760       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
761       SET_DECL_ASSEMBLER_NAME (expr, id);
762     }
763 }
764 
765 
766 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
767    input block IB.  DATA_IN contains tables and descriptors for the
768    file being read.  */
769 
770 static void
771 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
772 				       struct data_in *data_in, tree expr)
773 {
774   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
775   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
776   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
777   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
778   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
779 }
780 
781 
782 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
783    from input block IB.  DATA_IN contains tables and descriptors for the
784    file being read.  */
785 
786 static void
787 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
788 					  struct data_in *data_in, tree expr)
789 {
790   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
791   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
792   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
793 #ifndef ACCEL_COMPILER
794   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
795 #endif
796   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
797 #ifdef ACCEL_COMPILER
798   {
799     tree opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr);
800     if (opts)
801       {
802 	struct gcc_options tmp;
803 	init_options_struct (&tmp, NULL);
804 	cl_optimization_restore (&tmp, TREE_OPTIMIZATION (opts));
805 	finish_options (&tmp, &global_options_set, UNKNOWN_LOCATION);
806 	opts = build_optimization_node (&tmp);
807 	finalize_options_struct (&tmp);
808 	DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = opts;
809       }
810   }
811 #endif
812 
813   /* If the file contains a function with an EH personality set,
814      then it was compiled with -fexceptions.  In that case, initialize
815      the backend EH machinery.  */
816   if (DECL_FUNCTION_PERSONALITY (expr))
817     lto_init_eh ();
818 }
819 
820 
821 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
822    input block IB.  DATA_IN contains tables and descriptors for the file
823    being read.  */
824 
825 static void
826 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
827 					struct data_in *data_in, tree expr)
828 {
829   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
830   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
831   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
832   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
833   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
834      reconstructed during fixup.  */
835   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
836      during fixup.  */
837   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
838   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
839   /* TYPE_CANONICAL gets re-computed during type merging.  */
840   TYPE_CANONICAL (expr) = NULL_TREE;
841   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
842 }
843 
844 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
845    from input block IB.  DATA_IN contains tables and descriptors for the
846    file being read.  */
847 
848 static void
849 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
850 					    struct data_in *data_in,
851 					    tree expr)
852 {
853   if (TREE_CODE (expr) == ENUMERAL_TYPE)
854     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
855   else if (TREE_CODE (expr) == ARRAY_TYPE)
856     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
857   else if (RECORD_OR_UNION_TYPE_P (expr))
858     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
859   else if (TREE_CODE (expr) == FUNCTION_TYPE
860 	   || TREE_CODE (expr) == METHOD_TYPE)
861     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
862 
863   if (!POINTER_TYPE_P (expr))
864     TYPE_MIN_VALUE_RAW (expr) = stream_read_tree (ib, data_in);
865   TYPE_MAX_VALUE_RAW (expr) = stream_read_tree (ib, data_in);
866 }
867 
868 
869 /* Read all pointer fields in the TS_LIST structure of EXPR from input
870    block IB.  DATA_IN contains tables and descriptors for the
871    file being read.  */
872 
873 static void
874 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
875 				 struct data_in *data_in, tree expr)
876 {
877   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
878   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
879   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
880 }
881 
882 
883 /* Read all pointer fields in the TS_VEC structure of EXPR from input
884    block IB.  DATA_IN contains tables and descriptors for the
885    file being read.  */
886 
887 static void
888 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
889 				struct data_in *data_in, tree expr)
890 {
891   int i;
892 
893   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
894      instantiate EXPR.  */
895   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
896     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
897 }
898 
899 
900 /* Read all pointer fields in the TS_EXP structure of EXPR from input
901    block IB.  DATA_IN contains tables and descriptors for the
902    file being read.  */
903 
904 
905 static void
906 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
907 			        struct data_in *data_in, tree expr)
908 {
909   int i;
910   tree block;
911 
912   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
913     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
914 
915   block = stream_read_tree (ib, data_in);
916 
917   /* TODO: Block is stored in the locus information.  It may make more sense to
918      to make it go via the location cache.  */
919   if (block)
920     {
921       data_in->location_cache.apply_location_cache ();
922       TREE_SET_BLOCK (expr, block);
923     }
924 }
925 
926 
927 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
928    block IB.  DATA_IN contains tables and descriptors for the
929    file being read.  */
930 
931 static void
932 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
933 				  struct data_in *data_in, tree expr)
934 {
935   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
936 
937   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
938 
939   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
940      the limited cases we can handle - those that represent inlined
941      function scopes.  For the rest them on the floor instead of ICEing in
942      dwarf2out.c.  */
943   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
944   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
945      for early inlined BLOCKs so drop it on the floor instead of ICEing in
946      dwarf2out.c.  */
947 
948   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
949      streaming time.  */
950 
951   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
952      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
953      stream the child relationship explicitly.  */
954   if (BLOCK_SUPERCONTEXT (expr)
955       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
956     {
957       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
958       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
959     }
960 
961   /* The global block is rooted at the TU decl.  Hook it here to
962      avoid the need to stream in this block during WPA time.  */
963   else if (BLOCK_SUPERCONTEXT (expr)
964 	   && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
965     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
966 
967   /* The function-level block is connected at the time we read in
968      function bodies for the same reason.  */
969 }
970 
971 
972 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
973    block IB.  DATA_IN contains tables and descriptors for the
974    file being read.  */
975 
976 static void
977 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
978 				  struct data_in *data_in, tree expr)
979 {
980   unsigned i;
981   tree t;
982 
983   /* Note that the number of slots in EXPR was read in
984      streamer_alloc_tree when instantiating EXPR.  However, the
985      vector is empty so we cannot rely on vec::length to know how many
986      elements to read.  So, this list is emitted as a 0-terminated
987      list on the writer side.  */
988   do
989     {
990       t = stream_read_tree (ib, data_in);
991       if (t)
992 	BINFO_BASE_BINFOS (expr)->quick_push (t);
993     }
994   while (t);
995 
996   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
997   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
998   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
999 
1000   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
1001      unpacking the bitfield section.  */
1002   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
1003     {
1004       tree a = stream_read_tree (ib, data_in);
1005       (*BINFO_BASE_ACCESSES (expr))[i] = a;
1006     }
1007   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
1008      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
1009 }
1010 
1011 
1012 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1013    input block IB.  DATA_IN contains tables and descriptors for the
1014    file being read.  */
1015 
1016 static void
1017 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1018 				        struct data_in *data_in, tree expr)
1019 {
1020   unsigned i;
1021 
1022   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1023     {
1024       constructor_elt e;
1025       e.index = stream_read_tree (ib, data_in);
1026       e.value = stream_read_tree (ib, data_in);
1027       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1028     }
1029 }
1030 
1031 
1032 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1033    input block IB.  DATA_IN contains tables and descriptors for the
1034    file being read.  */
1035 
1036 static void
1037 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1038 				       struct data_in *data_in, tree expr)
1039 {
1040   int i;
1041 
1042   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1043     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1044   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1045 }
1046 
1047 
1048 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1049    contains tables and descriptors for the file being read.  */
1050 
1051 void
1052 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1053 			 tree expr)
1054 {
1055   enum tree_code code;
1056 
1057   code = TREE_CODE (expr);
1058 
1059   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1060     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1061 
1062   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1063     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1064 
1065   if (CODE_CONTAINS_STRUCT (code, TS_POLY_INT_CST))
1066     lto_input_ts_poly_tree_pointers (ib, data_in, expr);
1067 
1068   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1069     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1070 
1071   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1072     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1073 
1074   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1075     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1076 
1077   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1078     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1079 
1080   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1081     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1082 
1083   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1084     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1085 
1086   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1087     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1088 
1089   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1090     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1091 
1092   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1093     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1094 
1095   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1096     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1097 
1098   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1099     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1100 
1101   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1102     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1103 
1104   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1105     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1106 
1107   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1108     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1109 
1110   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1111     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1112 
1113   if (code == OMP_CLAUSE)
1114     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1115 }
1116 
1117 
1118 /* Read an index IX from input block IB and return the tree node at
1119    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1120 
1121 tree
1122 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1123 {
1124   unsigned HOST_WIDE_INT ix;
1125   tree result;
1126   enum LTO_tags expected_tag;
1127 
1128   ix = streamer_read_uhwi (ib);
1129   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1130 
1131   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1132   gcc_assert (result
1133               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1134 
1135   return result;
1136 }
1137