gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2017 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
 163     bp_unpack_value (bp, 9);
 164 }
 165
 166
 167 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 168    expression EXPR from bitpack BP.  */
 169
 170 static void
 171 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 172 {
 173   int i;
 174   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 175     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 176 }
 177
 178
 179 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 180    expression EXPR from bitpack BP.  */
 181
 182 static void
 183 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 184 {
 185   unsigned i;
 186   REAL_VALUE_TYPE r;
 187   REAL_VALUE_TYPE *rp;
 188
 189   /* Clear all bits of the real value type so that we can later do
 190      bitwise comparisons to see if two values are the same.  */
 191   memset (&r, 0, sizeof r);
 192   r.cl = (unsigned) bp_unpack_value (bp, 2);
 193   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 194   r.sign = (unsigned) bp_unpack_value (bp, 1);
 195   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 196   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 197   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 198   for (i = 0; i < SIGSZ; i++)
 199     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 200
 201   rp = ggc_alloc<real_value> ();
 202   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 203   TREE_REAL_CST_PTR (expr) = rp;
 204 }
 205
 206
 207 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 208    expression EXPR from bitpack BP.  */
 209
 210 static void
 211 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 212 {
 213   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 214   fp->mode = bp_unpack_machine_mode (bp);
 215   fp->data.low = bp_unpack_var_len_int (bp);
 216   fp->data.high = bp_unpack_var_len_int (bp);
 217   TREE_FIXED_CST_PTR (expr) = fp;
 218 }
 219
 220 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 221    of expression EXPR from bitpack BP.  */
 222
 223 static void
 224 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 225 {
 226   SET_DECL_MODE (expr, bp_unpack_machine_mode (bp));
 227   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 228   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 229   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 230   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 231   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 232   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 233   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 234   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 235   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 236   SET_DECL_ALIGN (expr, (unsigned) bp_unpack_var_len_unsigned (bp));
 237 #ifdef ACCEL_COMPILER
 238   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 239     SET_DECL_ALIGN (expr, targetm.absolute_biggest_alignment);
 240 #endif
 241   if (TREE_CODE (expr) == LABEL_DECL)
 242     {
 243       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 244
 245       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 246          force gimple_set_bb to recreate label_to_block_map.  */
 247       LABEL_DECL_UID (expr) = -1;
 248     }
 249
 250   if (TREE_CODE (expr) == FIELD_DECL)
 251     {
 252       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 253       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 254       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 255     }
 256
 257   if (VAR_P (expr))
 258     {
 259       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 260       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 261     }
 262
 263   if (TREE_CODE (expr) == RESULT_DECL
 264       || TREE_CODE (expr) == PARM_DECL
 265       || VAR_P (expr))
 266     {
 267       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 268       if (VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 269         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 270     }
 271 }
 272
 273
 274 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 275    of expression EXPR from bitpack BP.  */
 276
 277 static void
 278 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 279 {
 280   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 281 }
 282
 283
 284 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 285    of expression EXPR from bitpack BP.  */
 286
 287 static void
 288 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 289 {
 290   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 291   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 292   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 293   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 294   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 295   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 296   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 297
 298   if (VAR_P (expr))
 299     {
 300       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 301       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 302     }
 303
 304   if (TREE_CODE (expr) == FUNCTION_DECL)
 305     {
 306       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 307       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 308       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 309     }
 310 }
 311
 312
 313 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 314    of expression EXPR from bitpack BP.  */
 315
 316 static void
 317 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 318 {
 319   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 320                                                BUILT_IN_LAST);
 321   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 325   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 333                         = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 339     {
 340       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 341                                                                             12);
 342       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 343           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 344         fatal_error (input_location,
 345                      "machine independent builtin code out of range");
 346       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 347         {
 348           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 349           if (!result || result == error_mark_node)
 350             fatal_error (input_location,
 351                          "target specific builtin not available");
 352         }
 353     }
 354 }
 355
 356
 357 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 358    of expression EXPR from bitpack BP.  */
 359
 360 static void
 361 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 362 {
 363   machine_mode mode;
 364
 365   mode = bp_unpack_machine_mode (bp);
 366   SET_TYPE_MODE (expr, mode);
 367   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 368   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 369      no streaming.  */
 370   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 371   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 372   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 373   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 374   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 375   if (RECORD_OR_UNION_TYPE_P (expr))
 376     {
 377       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 378       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 379     }
 380   else if (TREE_CODE (expr) == ARRAY_TYPE)
 381     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 382   if (AGGREGATE_TYPE_P (expr))
 383     TYPE_TYPELESS_STORAGE (expr) = (unsigned) bp_unpack_value (bp, 1);
 384   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 385   SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
 386 #ifdef ACCEL_COMPILER
 387   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 388     SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
 389 #endif
 390 }
 391
 392
 393 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 394    of expression EXPR from bitpack BP.  */
 395
 396 static void
 397 unpack_ts_block_value_fields (struct data_in *data_in,
 398                               struct bitpack_d *bp, tree expr)
 399 {
 400   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 401   /* BLOCK_NUMBER is recomputed.  */
 402   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 403 }
 404
 405 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 406    structure of expression EXPR from bitpack BP.  */
 407
 408 static void
 409 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 410                                               struct bitpack_d *bp, tree expr)
 411 {
 412   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 413   vec_safe_push (all_translation_units, expr);
 414 }
 415
 416
 417 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 418    structure of expression EXPR from bitpack BP.  */
 419
 420 static void
 421 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 422                                    struct bitpack_d *bp, tree expr)
 423 {
 424   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 425   switch (OMP_CLAUSE_CODE (expr))
 426     {
 427     case OMP_CLAUSE_DEFAULT:
 428       OMP_CLAUSE_DEFAULT_KIND (expr)
 429         = bp_unpack_enum (bp, omp_clause_default_kind,
 430                           OMP_CLAUSE_DEFAULT_LAST);
 431       break;
 432     case OMP_CLAUSE_SCHEDULE:
 433       OMP_CLAUSE_SCHEDULE_KIND (expr)
 434         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 435                           OMP_CLAUSE_SCHEDULE_LAST);
 436       break;
 437     case OMP_CLAUSE_DEPEND:
 438       OMP_CLAUSE_DEPEND_KIND (expr)
 439         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 440       break;
 441     case OMP_CLAUSE_MAP:
 442       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 443                                                      GOMP_MAP_LAST));
 444       break;
 445     case OMP_CLAUSE_PROC_BIND:
 446       OMP_CLAUSE_PROC_BIND_KIND (expr)
 447         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 448                           OMP_CLAUSE_PROC_BIND_LAST);
 449       break;
 450     case OMP_CLAUSE_REDUCTION:
 451       OMP_CLAUSE_REDUCTION_CODE (expr)
 452         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 453       break;
 454     default:
 455       break;
 456     }
 457 }
 458
 459
 460 /* Read all the language-independent bitfield values for EXPR from IB.
 461    Return the partially unpacked bitpack so the caller can unpack any other
 462    bitfield values that the writer may have written.  */
 463
 464 void
 465 streamer_read_tree_bitfields (struct lto_input_block *ib,
 466                               struct data_in *data_in, tree expr)
 467 {
 468   enum tree_code code;
 469   struct bitpack_d bp;
 470
 471   /* Read the bitpack of non-pointer values from IB.  */
 472   bp = streamer_read_bitpack (ib);
 473
 474   /* The first word in BP contains the code of the tree that we
 475      are about to read.  */
 476   code = (enum tree_code) bp_unpack_value (&bp, 16);
 477   lto_tag_check (lto_tree_code_to_tag (code),
 478                  lto_tree_code_to_tag (TREE_CODE (expr)));
 479
 480   /* Note that all these functions are highly sensitive to changes in
 481      the types and sizes of each of the fields being packed.  */
 482   unpack_ts_base_value_fields (&bp, expr);
 483
 484   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 485     unpack_ts_int_cst_value_fields (&bp, expr);
 486
 487   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 488     unpack_ts_real_cst_value_fields (&bp, expr);
 489
 490   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 491     unpack_ts_fixed_cst_value_fields (&bp, expr);
 492
 493   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 494     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 497     unpack_ts_decl_common_value_fields (&bp, expr);
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 500     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 501
 502   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 503     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 504
 505   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 506     unpack_ts_function_decl_value_fields (&bp, expr);
 507
 508   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 509     unpack_ts_type_common_value_fields (&bp, expr);
 510
 511   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 512     {
 513       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 514       if (code == MEM_REF
 515           || code == TARGET_MEM_REF)
 516         {
 517           MR_DEPENDENCE_CLIQUE (expr)
 518             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 519           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 520             MR_DEPENDENCE_BASE (expr)
 521               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 522         }
 523     }
 524
 525   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 526     unpack_ts_block_value_fields (data_in, &bp, expr);
 527
 528   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 529     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 530
 531   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 532     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 533
 534   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 535     {
 536       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 537       if (length > 0)
 538         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 539     }
 540
 541   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 542     {
 543       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 544       if (length > 0)
 545         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 546     }
 547
 548 #ifndef ACCEL_COMPILER
 549   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 550     {
 551       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 552       if (targetm.target_option.post_stream_in)
 553         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 554     }
 555 #endif
 556
 557   if (code == OMP_CLAUSE)
 558     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 559 }
 560
 561
 562 /* Materialize a new tree from input block IB using descriptors in
 563    DATA_IN.  The code for the new tree should match TAG.  Store in
 564    *IX_P the index into the reader cache where the new tree is stored.  */
 565
 566 tree
 567 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 568                      enum LTO_tags tag)
 569 {
 570   enum tree_code code;
 571   tree result;
 572
 573   result = NULL_TREE;
 574
 575   code = lto_tag_to_tree_code (tag);
 576
 577   /* We should never see an SSA_NAME tree.  Only the version numbers of
 578      SSA names are ever written out.  See input_ssa_names.  */
 579   gcc_assert (code != SSA_NAME);
 580
 581   /* Instantiate a new tree using the header data.  */
 582   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 583     result = streamer_read_string_cst (data_in, ib);
 584   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 585     result = input_identifier (data_in, ib);
 586   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 587     {
 588       HOST_WIDE_INT len = streamer_read_hwi (ib);
 589       result = make_tree_vec (len);
 590     }
 591   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 592     {
 593       HOST_WIDE_INT len = streamer_read_hwi (ib);
 594       result = make_vector (len);
 595     }
 596   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 597     {
 598       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 599       result = make_tree_binfo (len);
 600     }
 601   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 602     {
 603       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 604       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 605       result = make_int_cst (len, ext_len);
 606     }
 607   else if (code == CALL_EXPR)
 608     {
 609       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 610       return build_vl_exp (CALL_EXPR, nargs + 3);
 611     }
 612   else if (code == OMP_CLAUSE)
 613     {
 614       enum omp_clause_code subcode
 615         = (enum omp_clause_code) streamer_read_uhwi (ib);
 616       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 617     }
 618   else
 619     {
 620       /* For all other nodes, materialize the tree with a raw
 621          make_node call.  */
 622       result = make_node (code);
 623     }
 624
 625   return result;
 626 }
 627
 628
 629 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 630    block IB.  DATA_IN contains tables and descriptors for the
 631    file being read.  */
 632
 633
 634 static void
 635 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 636                                    struct data_in *data_in, tree expr)
 637 {
 638   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 639     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 640 }
 641
 642
 643 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 644    block IB.  DATA_IN contains tables and descriptors for the
 645    file being read.  */
 646
 647 static void
 648 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 649                                    struct data_in *data_in, tree expr)
 650 {
 651   unsigned i;
 652   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 653     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 654 }
 655
 656
 657 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 658    block IB.  DATA_IN contains tables and descriptors for the
 659    file being read.  */
 660
 661 static void
 662 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 663                                     struct data_in *data_in, tree expr)
 664 {
 665   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 666   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 667 }
 668
 669
 670 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 671    from input block IB.  DATA_IN contains tables and descriptors for the
 672    file being read.  */
 673
 674 static void
 675 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 676                                          struct data_in *data_in, tree expr)
 677 {
 678   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 679   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 680 }
 681
 682
 683 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 684    input block IB.  DATA_IN contains tables and descriptors for the
 685    file being read.  */
 686
 687 static void
 688 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 689                                         struct data_in *data_in, tree expr)
 690 {
 691   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 692   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 693   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 694   DECL_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 695
 696   if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 697       && DECL_HAS_VALUE_EXPR_P (expr))
 698     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 699
 700   if (VAR_P (expr))
 701     {
 702       tree dexpr = stream_read_tree (ib, data_in);
 703       if (dexpr)
 704         SET_DECL_DEBUG_EXPR (expr, dexpr);
 705     }
 706 }
 707
 708
 709 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 710    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 711    file being read.  */
 712
 713 static void
 714 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 715                                             struct data_in *data_in, tree expr)
 716 {
 717   if (TREE_CODE (expr) == TYPE_DECL)
 718     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 719 }
 720
 721
 722 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 723    from input block IB.  DATA_IN contains tables and descriptors for the
 724    file being read.  */
 725
 726 static void
 727 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 728                                           struct data_in *data_in, tree expr)
 729 {
 730   tree id;
 731
 732   id = stream_read_tree (ib, data_in);
 733   if (id)
 734     {
 735       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 736       SET_DECL_ASSEMBLER_NAME (expr, id);
 737     }
 738 }
 739
 740
 741 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 742    input block IB.  DATA_IN contains tables and descriptors for the
 743    file being read.  */
 744
 745 static void
 746 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 747                                        struct data_in *data_in, tree expr)
 748 {
 749   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 750   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 751   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 752   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 753   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 754 }
 755
 756
 757 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 758    from input block IB.  DATA_IN contains tables and descriptors for the
 759    file being read.  */
 760
 761 static void
 762 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 763                                           struct data_in *data_in, tree expr)
 764 {
 765   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 766   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 767   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 768 #ifndef ACCEL_COMPILER
 769   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 770 #endif
 771   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 772 #ifdef ACCEL_COMPILER
 773   {
 774     tree opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr);
 775     if (opts)
 776       {
 777         struct gcc_options tmp;
 778         init_options_struct (&tmp, NULL);
 779         cl_optimization_restore (&tmp, TREE_OPTIMIZATION (opts));
 780         finish_options (&tmp, &global_options_set, UNKNOWN_LOCATION);
 781         opts = build_optimization_node (&tmp);
 782         finalize_options_struct (&tmp);
 783         DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = opts;
 784       }
 785   }
 786 #endif
 787
 788   /* If the file contains a function with an EH personality set,
 789      then it was compiled with -fexceptions.  In that case, initialize
 790      the backend EH machinery.  */
 791   if (DECL_FUNCTION_PERSONALITY (expr))
 792     lto_init_eh ();
 793 }
 794
 795
 796 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 797    input block IB.  DATA_IN contains tables and descriptors for the file
 798    being read.  */
 799
 800 static void
 801 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 802                                         struct data_in *data_in, tree expr)
 803 {
 804   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 805   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 806   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 807   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 808   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 809      reconstructed during fixup.  */
 810   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 811      during fixup.  */
 812   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 813   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 814   /* TYPE_CANONICAL gets re-computed during type merging.  */
 815   TYPE_CANONICAL (expr) = NULL_TREE;
 816   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 817 }
 818
 819 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 820    from input block IB.  DATA_IN contains tables and descriptors for the
 821    file being read.  */
 822
 823 static void
 824 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 825                                             struct data_in *data_in,
 826                                             tree expr)
 827 {
 828   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 829     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 830   else if (TREE_CODE (expr) == ARRAY_TYPE)
 831     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 832   else if (RECORD_OR_UNION_TYPE_P (expr))
 833     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 834   else if (TREE_CODE (expr) == FUNCTION_TYPE
 835            || TREE_CODE (expr) == METHOD_TYPE)
 836     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 837
 838   if (!POINTER_TYPE_P (expr))
 839     TYPE_MIN_VALUE_RAW (expr) = stream_read_tree (ib, data_in);
 840   TYPE_MAX_VALUE_RAW (expr) = stream_read_tree (ib, data_in);
 841 }
 842
 843
 844 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 845    block IB.  DATA_IN contains tables and descriptors for the
 846    file being read.  */
 847
 848 static void
 849 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 850                                  struct data_in *data_in, tree expr)
 851 {
 852   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 853   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 854   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 855 }
 856
 857
 858 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 859    block IB.  DATA_IN contains tables and descriptors for the
 860    file being read.  */
 861
 862 static void
 863 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 864                                 struct data_in *data_in, tree expr)
 865 {
 866   int i;
 867
 868   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 869      instantiate EXPR.  */
 870   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 871     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 872 }
 873
 874
 875 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 876    block IB.  DATA_IN contains tables and descriptors for the
 877    file being read.  */
 878
 879
 880 static void
 881 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 882                                 struct data_in *data_in, tree expr)
 883 {
 884   int i;
 885   tree block;
 886
 887   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 888     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 889
 890   block = stream_read_tree (ib, data_in);
 891
 892   /* TODO: Block is stored in the locus information.  It may make more sense to
 893      to make it go via the location cache.  */
 894   if (block)
 895     {
 896       data_in->location_cache.apply_location_cache ();
 897       TREE_SET_BLOCK (expr, block);
 898     }
 899 }
 900
 901
 902 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 903    block IB.  DATA_IN contains tables and descriptors for the
 904    file being read.  */
 905
 906 static void
 907 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 908                                   struct data_in *data_in, tree expr)
 909 {
 910   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 911
 912   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 913
 914   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 915      the limited cases we can handle - those that represent inlined
 916      function scopes.  For the rest them on the floor instead of ICEing in
 917      dwarf2out.c.  */
 918   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 919   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 920      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 921      dwarf2out.c.  */
 922
 923   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 924      streaming time.  */
 925
 926   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 927      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 928      stream the child relationship explicitly.  */
 929   if (BLOCK_SUPERCONTEXT (expr)
 930       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 931     {
 932       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 933       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 934     }
 935
 936   /* The global block is rooted at the TU decl.  Hook it here to
 937      avoid the need to stream in this block during WPA time.  */
 938   else if (BLOCK_SUPERCONTEXT (expr)
 939            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 940     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 941
 942   /* The function-level block is connected at the time we read in
 943      function bodies for the same reason.  */
 944 }
 945
 946
 947 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 948    block IB.  DATA_IN contains tables and descriptors for the
 949    file being read.  */
 950
 951 static void
 952 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 953                                   struct data_in *data_in, tree expr)
 954 {
 955   unsigned i;
 956   tree t;
 957
 958   /* Note that the number of slots in EXPR was read in
 959      streamer_alloc_tree when instantiating EXPR.  However, the
 960      vector is empty so we cannot rely on vec::length to know how many
 961      elements to read.  So, this list is emitted as a 0-terminated
 962      list on the writer side.  */
 963   do
 964     {
 965       t = stream_read_tree (ib, data_in);
 966       if (t)
 967         BINFO_BASE_BINFOS (expr)->quick_push (t);
 968     }
 969   while (t);
 970
 971   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 972   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 973   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 974
 975   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 976      unpacking the bitfield section.  */
 977   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 978     {
 979       tree a = stream_read_tree (ib, data_in);
 980       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 981     }
 982   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 983      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 984 }
 985
 986
 987 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 988    input block IB.  DATA_IN contains tables and descriptors for the
 989    file being read.  */
 990
 991 static void
 992 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 993                                         struct data_in *data_in, tree expr)
 994 {
 995   unsigned i;
 996
 997   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
 998     {
 999       constructor_elt e;
1000       e.index = stream_read_tree (ib, data_in);
1001       e.value = stream_read_tree (ib, data_in);
1002       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1003     }
1004 }
1005
1006
1007 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1008    input block IB.  DATA_IN contains tables and descriptors for the
1009    file being read.  */
1010
1011 static void
1012 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1013                                        struct data_in *data_in, tree expr)
1014 {
1015   int i;
1016
1017   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1018     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1019   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1020 }
1021
1022
1023 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1024    contains tables and descriptors for the file being read.  */
1025
1026 void
1027 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1028                          tree expr)
1029 {
1030   enum tree_code code;
1031
1032   code = TREE_CODE (expr);
1033
1034   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1035     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1036
1037   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1038     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1039
1040   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1041     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1042
1043   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1044     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1045
1046   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1047     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1048
1049   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1050     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1051
1052   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1053     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1054
1055   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1056     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1057
1058   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1059     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1062     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1065     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1068     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1069
1070   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1071     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1072
1073   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1074     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1075
1076   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1077     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1078
1079   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1080     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1081
1082   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1083     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1084
1085   if (code == OMP_CLAUSE)
1086     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1087 }
1088
1089
1090 /* Read an index IX from input block IB and return the tree node at
1091    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1092
1093 tree
1094 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1095 {
1096   unsigned HOST_WIDE_INT ix;
1097   tree result;
1098   enum LTO_tags expected_tag;
1099
1100   ix = streamer_read_uhwi (ib);
1101   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1102
1103   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1104   gcc_assert (result
1105               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1106
1107   return result;
1108 }