gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2014 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 "diagnostic.h"
  26 #include "tree.h"
  27 #include "stringpool.h"
  28 #include "basic-block.h"
  29 #include "tree-ssa-alias.h"
  30 #include "internal-fn.h"
  31 #include "gimple-expr.h"
  32 #include "is-a.h"
  33 #include "gimple.h"
  34 #include "tree-streamer.h"
  35 #include "data-streamer.h"
  36 #include "streamer-hooks.h"
  37 #include "lto-streamer.h"
  38
  39 /* Read a STRING_CST from the string table in DATA_IN using input
  40    block IB.  */
  41
  42 tree
  43 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  44 {
  45   unsigned int len;
  46   const char * ptr;
  47
  48   ptr = streamer_read_indexed_string (data_in, ib, &len);
  49   if (!ptr)
  50     return NULL;
  51   return build_string (len, ptr);
  52 }
  53
  54
  55 /* Read an IDENTIFIER from the string table in DATA_IN using input
  56    block IB.  */
  57
  58 static tree
  59 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  60 {
  61   unsigned int len;
  62   const char *ptr;
  63
  64   ptr = streamer_read_indexed_string (data_in, ib, &len);
  65   if (!ptr)
  66     return NULL;
  67   return get_identifier_with_length (ptr, len);
  68 }
  69
  70
  71 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  72    tables and descriptors for the file being read.  */
  73
  74 tree
  75 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  76 {
  77   tree first, prev, curr;
  78
  79   /* The chain is written as NULL terminated list of trees.  */
  80   first = prev = NULL_TREE;
  81   do
  82     {
  83       curr = stream_read_tree (ib, data_in);
  84       if (prev)
  85         TREE_CHAIN (prev) = curr;
  86       else
  87         first = curr;
  88
  89       prev = curr;
  90     }
  91   while (curr);
  92
  93   return first;
  94 }
  95
  96
  97 /* Unpack all the non-pointer fields of the TS_BASE structure of
  98    expression EXPR from bitpack BP.  */
  99
 100 static void
 101 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 102 {
 103   /* Note that the code for EXPR has already been unpacked to create EXPR in
 104      streamer_alloc_tree.  */
 105   if (!TYPE_P (expr))
 106     {
 107       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 108       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 109       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 110
 111       /* TREE_PUBLIC is used on types to indicate that the type
 112          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 113          so we skip it here.  */
 114       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 115     }
 116   else
 117     bp_unpack_value (bp, 4);
 118   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 119   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 120   if (DECL_P (expr))
 121     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 122   else if (TYPE_P (expr))
 123     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 124   else
 125     bp_unpack_value (bp, 1);
 126   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 127   if (TYPE_P (expr))
 128     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 129   else
 130     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 131   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 132   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   if (TREE_CODE (expr) != TREE_BINFO)
 134     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 135   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   if (TYPE_P (expr))
 138     {
 139       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 140       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 141     }
 142   else if (TREE_CODE (expr) == SSA_NAME)
 143     SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 144   else
 145     bp_unpack_value (bp, 1);
 146 }
 147
 148
 149 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 150    expression EXPR from bitpack BP.  */
 151
 152 static void
 153 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 154 {
 155   TREE_INT_CST_LOW (expr) = bp_unpack_var_len_unsigned (bp);
 156   TREE_INT_CST_HIGH (expr) = bp_unpack_var_len_int (bp);
 157 }
 158
 159
 160 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 161    expression EXPR from bitpack BP.  */
 162
 163 static void
 164 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 165 {
 166   unsigned i;
 167   REAL_VALUE_TYPE r;
 168   REAL_VALUE_TYPE *rp;
 169
 170   r.cl = (unsigned) bp_unpack_value (bp, 2);
 171   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 172   r.sign = (unsigned) bp_unpack_value (bp, 1);
 173   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 174   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 175   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 176   for (i = 0; i < SIGSZ; i++)
 177     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 178
 179   rp = ggc_alloc_real_value ();
 180   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 181   TREE_REAL_CST_PTR (expr) = rp;
 182 }
 183
 184
 185 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 186    expression EXPR from bitpack BP.  */
 187
 188 static void
 189 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 190 {
 191   FIXED_VALUE_TYPE *fp = ggc_alloc_fixed_value ();
 192   fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 193   fp->data.low = bp_unpack_var_len_int (bp);
 194   fp->data.high = bp_unpack_var_len_int (bp);
 195   TREE_FIXED_CST_PTR (expr) = fp;
 196 }
 197
 198 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 199    of expression EXPR from bitpack BP.  */
 200
 201 static void
 202 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 203 {
 204   DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 205   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 206   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 207   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 208   DECL_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 209   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 210   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 211   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 212   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 213   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 214   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 215
 216   if (TREE_CODE (expr) == LABEL_DECL)
 217     {
 218       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 219
 220       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 221          force gimple_set_bb to recreate label_to_block_map.  */
 222       LABEL_DECL_UID (expr) = -1;
 223     }
 224
 225   if (TREE_CODE (expr) == FIELD_DECL)
 226     {
 227       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 228       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 229       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 230     }
 231
 232   if (TREE_CODE (expr) == VAR_DECL)
 233     {
 234       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 235       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 236     }
 237
 238   if (TREE_CODE (expr) == RESULT_DECL
 239       || TREE_CODE (expr) == PARM_DECL
 240       || TREE_CODE (expr) == VAR_DECL)
 241     {
 242       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 243       if (TREE_CODE (expr) == VAR_DECL
 244           || TREE_CODE (expr) == PARM_DECL)
 245         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 246     }
 247 }
 248
 249
 250 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 251    of expression EXPR from bitpack BP.  */
 252
 253 static void
 254 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 255 {
 256   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 257 }
 258
 259
 260 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 261    of expression EXPR from bitpack BP.  */
 262
 263 static void
 264 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 265 {
 266   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 267   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 268   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 269   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 270   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 271   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 272   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 273
 274   if (TREE_CODE (expr) == VAR_DECL)
 275     {
 276       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 277       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 278       DECL_TLS_MODEL (expr) = (enum tls_model) bp_unpack_value (bp,  3);
 279     }
 280
 281   if (TREE_CODE (expr) == FUNCTION_DECL)
 282     {
 283       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 284       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 285       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 286     }
 287   if (VAR_OR_FUNCTION_DECL_P (expr))
 288     {
 289       priority_type p;
 290       p = (priority_type) bp_unpack_var_len_unsigned (bp);
 291       SET_DECL_INIT_PRIORITY (expr, p);
 292     }
 293 }
 294
 295
 296 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 297    of expression EXPR from bitpack BP.  */
 298
 299 static void
 300 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 301 {
 302   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 303                                                BUILT_IN_LAST);
 304   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 305   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 306   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 307   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 308   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 309   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 310   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 311   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 312   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 313   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 314   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 315   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 316                         = (unsigned) bp_unpack_value (bp, 1);
 317   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 318   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 319   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 322     {
 323       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 324                                                                             11);
 325       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 326           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 327         fatal_error ("machine independent builtin code out of range");
 328       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 329         {
 330           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 331           if (!result || result == error_mark_node)
 332             fatal_error ("target specific builtin not available");
 333         }
 334     }
 335   if (DECL_STATIC_DESTRUCTOR (expr))
 336     {
 337       priority_type p;
 338       p = (priority_type) bp_unpack_var_len_unsigned (bp);
 339       SET_DECL_FINI_PRIORITY (expr, p);
 340     }
 341 }
 342
 343
 344 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 345    of expression EXPR from bitpack BP.  */
 346
 347 static void
 348 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 349 {
 350   enum machine_mode mode;
 351
 352   mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 353   SET_TYPE_MODE (expr, mode);
 354   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 355   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 356   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 357   if (RECORD_OR_UNION_TYPE_P (expr))
 358     {
 359       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 360       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 361     }
 362   else if (TREE_CODE (expr) == ARRAY_TYPE)
 363     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 364   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 365   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 366   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 367   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 368   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 369   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 370   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 371 }
 372
 373
 374 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 375    of expression EXPR from bitpack BP.  */
 376
 377 static void
 378 unpack_ts_block_value_fields (struct data_in *data_in,
 379                               struct bitpack_d *bp, tree expr)
 380 {
 381   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 382   /* BLOCK_NUMBER is recomputed.  */
 383   BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 384 }
 385
 386 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 387    structure of expression EXPR from bitpack BP.  */
 388
 389 static void
 390 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 391                                               struct bitpack_d *bp, tree expr)
 392 {
 393   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 394   vec_safe_push (all_translation_units, expr);
 395 }
 396
 397 /* Unpack a TS_TARGET_OPTION tree from BP into EXPR.  */
 398
 399 static void
 400 unpack_ts_target_option (struct bitpack_d *bp, tree expr)
 401 {
 402   unsigned i, len;
 403   struct cl_target_option *t = TREE_TARGET_OPTION (expr);
 404
 405   len = sizeof (struct cl_target_option);
 406   for (i = 0; i < len; i++)
 407     ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
 408   if (bp_unpack_value (bp, 32) != 0x12345678)
 409     fatal_error ("cl_target_option size mismatch in LTO reader and writer");
 410 }
 411
 412 /* Unpack a TS_OPTIMIZATION tree from BP into EXPR.  */
 413
 414 static void
 415 unpack_ts_optimization (struct bitpack_d *bp, tree expr)
 416 {
 417   unsigned i, len;
 418   struct cl_optimization *t = TREE_OPTIMIZATION (expr);
 419
 420   len = sizeof (struct cl_optimization);
 421   for (i = 0; i < len; i++)
 422     ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
 423   if (bp_unpack_value (bp, 32) != 0x12345678)
 424     fatal_error ("cl_optimization size mismatch in LTO reader and writer");
 425 }
 426
 427
 428 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 429    structure of expression EXPR from bitpack BP.  */
 430
 431 static void
 432 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 433                                    struct bitpack_d *bp, tree expr)
 434 {
 435   OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in);
 436   switch (OMP_CLAUSE_CODE (expr))
 437     {
 438     case OMP_CLAUSE_DEFAULT:
 439       OMP_CLAUSE_DEFAULT_KIND (expr)
 440         = bp_unpack_enum (bp, omp_clause_default_kind,
 441                           OMP_CLAUSE_DEFAULT_LAST);
 442       break;
 443     case OMP_CLAUSE_SCHEDULE:
 444       OMP_CLAUSE_SCHEDULE_KIND (expr)
 445         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 446                           OMP_CLAUSE_SCHEDULE_LAST);
 447       break;
 448     case OMP_CLAUSE_DEPEND:
 449       OMP_CLAUSE_DEPEND_KIND (expr)
 450         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 451       break;
 452     case OMP_CLAUSE_MAP:
 453       OMP_CLAUSE_MAP_KIND (expr)
 454         = bp_unpack_enum (bp, omp_clause_map_kind, OMP_CLAUSE_MAP_LAST);
 455       break;
 456     case OMP_CLAUSE_PROC_BIND:
 457       OMP_CLAUSE_PROC_BIND_KIND (expr)
 458         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 459                           OMP_CLAUSE_PROC_BIND_LAST);
 460       break;
 461     case OMP_CLAUSE_REDUCTION:
 462       OMP_CLAUSE_REDUCTION_CODE (expr)
 463         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 464       break;
 465     default:
 466       break;
 467     }
 468 }
 469
 470 /* Unpack all the non-pointer fields in EXPR into a bit pack.  */
 471
 472 static void
 473 unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
 474 {
 475   enum tree_code code;
 476
 477   code = TREE_CODE (expr);
 478
 479   /* Note that all these functions are highly sensitive to changes in
 480      the types and sizes of each of the fields being packed.  */
 481   unpack_ts_base_value_fields (bp, expr);
 482
 483   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 484     unpack_ts_int_cst_value_fields (bp, expr);
 485
 486   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 487     unpack_ts_real_cst_value_fields (bp, expr);
 488
 489   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 490     unpack_ts_fixed_cst_value_fields (bp, expr);
 491
 492   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 493     DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 494
 495   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 496     unpack_ts_decl_common_value_fields (bp, expr);
 497
 498   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 499     unpack_ts_decl_wrtl_value_fields (bp, expr);
 500
 501   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 502     unpack_ts_decl_with_vis_value_fields (bp, expr);
 503
 504   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 505     unpack_ts_function_decl_value_fields (bp, expr);
 506
 507   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 508     unpack_ts_type_common_value_fields (bp, expr);
 509
 510   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 511     SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
 512
 513   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 514     unpack_ts_block_value_fields (data_in, bp, expr);
 515
 516   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 517     unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
 518
 519   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 520     unpack_ts_target_option (bp, expr);
 521
 522   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 523     unpack_ts_optimization (bp, expr);
 524
 525   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 526     {
 527       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 528       if (length > 0)
 529         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 530     }
 531
 532   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 533     {
 534       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 535       if (length > 0)
 536         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 537     }
 538
 539   if (code == OMP_CLAUSE)
 540     unpack_ts_omp_clause_value_fields (data_in, bp, expr);
 541 }
 542
 543
 544 /* Read all the language-independent bitfield values for EXPR from IB.
 545    Return the partially unpacked bitpack so the caller can unpack any other
 546    bitfield values that the writer may have written.  */
 547
 548 struct bitpack_d
 549 streamer_read_tree_bitfields (struct lto_input_block *ib,
 550                               struct data_in *data_in, tree expr)
 551 {
 552   enum tree_code code;
 553   struct bitpack_d bp;
 554
 555   /* Read the bitpack of non-pointer values from IB.  */
 556   bp = streamer_read_bitpack (ib);
 557
 558   /* The first word in BP contains the code of the tree that we
 559      are about to read.  */
 560   code = (enum tree_code) bp_unpack_value (&bp, 16);
 561   lto_tag_check (lto_tree_code_to_tag (code),
 562                  lto_tree_code_to_tag (TREE_CODE (expr)));
 563
 564   /* Unpack all the value fields from BP.  */
 565   unpack_value_fields (data_in, &bp, expr);
 566
 567   return bp;
 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 #ifdef LTO_STREAMER_DEBUG
 582   HOST_WIDEST_INT orig_address_in_writer;
 583 #endif
 584
 585   result = NULL_TREE;
 586
 587 #ifdef LTO_STREAMER_DEBUG
 588   /* Read the word representing the memory address for the tree
 589      as it was written by the writer.  This is useful when
 590      debugging differences between the writer and reader.  */
 591   orig_address_in_writer = streamer_read_hwi (ib);
 592   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 593 #endif
 594
 595   code = lto_tag_to_tree_code (tag);
 596
 597   /* We should never see an SSA_NAME tree.  Only the version numbers of
 598      SSA names are ever written out.  See input_ssa_names.  */
 599   gcc_assert (code != SSA_NAME);
 600
 601   /* Instantiate a new tree using the header data.  */
 602   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 603     result = streamer_read_string_cst (data_in, ib);
 604   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 605     result = input_identifier (data_in, ib);
 606   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 607     {
 608       HOST_WIDE_INT len = streamer_read_hwi (ib);
 609       result = make_tree_vec (len);
 610     }
 611   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 612     {
 613       HOST_WIDE_INT len = streamer_read_hwi (ib);
 614       result = make_vector (len);
 615     }
 616   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 617     {
 618       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 619       result = make_tree_binfo (len);
 620     }
 621   else if (code == CALL_EXPR)
 622     {
 623       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 624       return build_vl_exp (CALL_EXPR, nargs + 3);
 625     }
 626   else if (code == OMP_CLAUSE)
 627     {
 628       enum omp_clause_code subcode
 629         = (enum omp_clause_code) streamer_read_uhwi (ib);
 630       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 631     }
 632   else
 633     {
 634       /* For all other nodes, materialize the tree with a raw
 635          make_node call.  */
 636       result = make_node (code);
 637     }
 638
 639 #ifdef LTO_STREAMER_DEBUG
 640   /* Store the original address of the tree as seen by the writer
 641      in RESULT's aux field.  This is useful when debugging streaming
 642      problems.  This way, a debugging session can be started on
 643      both writer and reader with a breakpoint using this address
 644      value in both.  */
 645   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 646 #endif
 647
 648   return result;
 649 }
 650
 651
 652 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 653    block IB.  DATA_IN contains tables and descriptors for the
 654    file being read.  */
 655
 656
 657 static void
 658 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 659                                    struct data_in *data_in, tree expr)
 660 {
 661   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 662     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 663 }
 664
 665
 666 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 667    block IB.  DATA_IN contains tables and descriptors for the
 668    file being read.  */
 669
 670 static void
 671 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 672                                    struct data_in *data_in, tree expr)
 673 {
 674   unsigned i;
 675   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 676     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 677 }
 678
 679
 680 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 681    block IB.  DATA_IN contains tables and descriptors for the
 682    file being read.  */
 683
 684 static void
 685 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 686                                     struct data_in *data_in, tree expr)
 687 {
 688   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 689   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 690 }
 691
 692
 693 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 694    from input block IB.  DATA_IN contains tables and descriptors for the
 695    file being read.  */
 696
 697 static void
 698 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 699                                          struct data_in *data_in, tree expr)
 700 {
 701   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 702   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 703 }
 704
 705
 706 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 707    input block IB.  DATA_IN contains tables and descriptors for the
 708    file being read.  */
 709
 710 static void
 711 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 712                                         struct data_in *data_in, tree expr)
 713 {
 714   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 715   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 716   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 717
 718   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 719      for early inlining so drop it on the floor instead of ICEing in
 720      dwarf2out.c.  */
 721
 722   if ((TREE_CODE (expr) == VAR_DECL
 723        || TREE_CODE (expr) == PARM_DECL)
 724       && DECL_HAS_VALUE_EXPR_P (expr))
 725     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 726
 727   if (TREE_CODE (expr) == VAR_DECL)
 728     {
 729       tree dexpr = stream_read_tree (ib, data_in);
 730       if (dexpr)
 731         SET_DECL_DEBUG_EXPR (expr, dexpr);
 732     }
 733 }
 734
 735
 736 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 737    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 738    file being read.  */
 739
 740 static void
 741 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 742                                             struct data_in *data_in, tree expr)
 743 {
 744   if (TREE_CODE (expr) == TYPE_DECL)
 745     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 746   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 747 }
 748
 749
 750 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 751    from input block IB.  DATA_IN contains tables and descriptors for the
 752    file being read.  */
 753
 754 static void
 755 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 756                                           struct data_in *data_in, tree expr)
 757 {
 758   tree id;
 759
 760   id = stream_read_tree (ib, data_in);
 761   if (id)
 762     {
 763       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 764       SET_DECL_ASSEMBLER_NAME (expr, id);
 765     }
 766
 767   DECL_SECTION_NAME (expr) = stream_read_tree (ib, data_in);
 768   DECL_COMDAT_GROUP (expr) = stream_read_tree (ib, data_in);
 769 }
 770
 771
 772 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 773    input block IB.  DATA_IN contains tables and descriptors for the
 774    file being read.  */
 775
 776 static void
 777 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 778                                        struct data_in *data_in, tree expr)
 779 {
 780   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 781   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 782   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 783   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 784   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 785 }
 786
 787
 788 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 789    from input block IB.  DATA_IN contains tables and descriptors for the
 790    file being read.  */
 791
 792 static void
 793 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 794                                           struct data_in *data_in, tree expr)
 795 {
 796   /* DECL_STRUCT_FUNCTION is handled by lto_input_function.  FIXME lto,
 797      maybe it should be handled here?  */
 798   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 799   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 800   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 801
 802   /* If the file contains a function with an EH personality set,
 803      then it was compiled with -fexceptions.  In that case, initialize
 804      the backend EH machinery.  */
 805   if (DECL_FUNCTION_PERSONALITY (expr))
 806     lto_init_eh ();
 807 }
 808
 809
 810 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 811    input block IB.  DATA_IN contains tables and descriptors for the file
 812    being read.  */
 813
 814 static void
 815 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 816                                         struct data_in *data_in, tree expr)
 817 {
 818   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 819   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 820   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 821   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 822   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 823      reconstructed during fixup.  */
 824   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 825      during fixup.  */
 826   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 827   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 828   /* TYPE_CANONICAL gets re-computed during type merging.  */
 829   TYPE_CANONICAL (expr) = NULL_TREE;
 830   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 831 }
 832
 833 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 834    from input block IB.  DATA_IN contains tables and descriptors for the
 835    file being read.  */
 836
 837 static void
 838 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 839                                             struct data_in *data_in,
 840                                             tree expr)
 841 {
 842   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 843     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 844   else if (TREE_CODE (expr) == ARRAY_TYPE)
 845     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 846   else if (RECORD_OR_UNION_TYPE_P (expr))
 847     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 848   else if (TREE_CODE (expr) == FUNCTION_TYPE
 849            || TREE_CODE (expr) == METHOD_TYPE)
 850     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 851
 852   if (!POINTER_TYPE_P (expr))
 853     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 854   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 855   if (RECORD_OR_UNION_TYPE_P (expr))
 856     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 857 }
 858
 859
 860 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 861    block IB.  DATA_IN contains tables and descriptors for the
 862    file being read.  */
 863
 864 static void
 865 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 866                                  struct data_in *data_in, tree expr)
 867 {
 868   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 869   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 870   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 871 }
 872
 873
 874 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 875    block IB.  DATA_IN contains tables and descriptors for the
 876    file being read.  */
 877
 878 static void
 879 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 880                                 struct data_in *data_in, tree expr)
 881 {
 882   int i;
 883
 884   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 885      instantiate EXPR.  */
 886   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 887     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 888 }
 889
 890
 891 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 892    block IB.  DATA_IN contains tables and descriptors for the
 893    file being read.  */
 894
 895
 896 static void
 897 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 898                                 struct data_in *data_in, tree expr)
 899 {
 900   int i;
 901
 902   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 903     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 904
 905   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 906 }
 907
 908
 909 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 910    block IB.  DATA_IN contains tables and descriptors for the
 911    file being read.  */
 912
 913 static void
 914 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 915                                   struct data_in *data_in, tree expr)
 916 {
 917   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 918
 919   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 920
 921   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 922      the limited cases we can handle - those that represent inlined
 923      function scopes.  For the rest them on the floor instead of ICEing in
 924      dwarf2out.c.  */
 925   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 926   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 927      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 928      dwarf2out.c.  */
 929
 930   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 931      streaming time.  */
 932
 933   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 934      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 935      stream the child relationship explicitly.  */
 936   if (BLOCK_SUPERCONTEXT (expr)
 937       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 938     {
 939       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 940       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 941     }
 942
 943   /* The global block is rooted at the TU decl.  Hook it here to
 944      avoid the need to stream in this block during WPA time.  */
 945   else if (BLOCK_SUPERCONTEXT (expr)
 946            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 947     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 948
 949   /* The function-level block is connected at the time we read in
 950      function bodies for the same reason.  */
 951 }
 952
 953
 954 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 955    block IB.  DATA_IN contains tables and descriptors for the
 956    file being read.  */
 957
 958 static void
 959 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 960                                   struct data_in *data_in, tree expr)
 961 {
 962   unsigned i;
 963   tree t;
 964
 965   /* Note that the number of slots in EXPR was read in
 966      streamer_alloc_tree when instantiating EXPR.  However, the
 967      vector is empty so we cannot rely on vec::length to know how many
 968      elements to read.  So, this list is emitted as a 0-terminated
 969      list on the writer side.  */
 970   do
 971     {
 972       t = stream_read_tree (ib, data_in);
 973       if (t)
 974         BINFO_BASE_BINFOS (expr)->quick_push (t);
 975     }
 976   while (t);
 977
 978   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 979   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 980   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 981
 982   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 983      unpacking the bitfield section.  */
 984   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 985     {
 986       tree a = stream_read_tree (ib, data_in);
 987       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 988     }
 989   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 990      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 991 }
 992
 993
 994 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 995    input block IB.  DATA_IN contains tables and descriptors for the
 996    file being read.  */
 997
 998 static void
 999 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1000                                         struct data_in *data_in, tree expr)
1001 {
1002   unsigned i;
1003
1004   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1005     {
1006       constructor_elt e;
1007       e.index = stream_read_tree (ib, data_in);
1008       e.value = stream_read_tree (ib, data_in);
1009       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1010     }
1011 }
1012
1013
1014 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1015    input block IB.  DATA_IN contains tables and descriptors for the
1016    file being read.  */
1017
1018 static void
1019 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1020                                        struct data_in *data_in, tree expr)
1021 {
1022   int i;
1023
1024   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1025     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1026   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1027 }
1028
1029
1030 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1031    contains tables and descriptors for the file being read.  */
1032
1033 void
1034 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1035                          tree expr)
1036 {
1037   enum tree_code code;
1038
1039   code = TREE_CODE (expr);
1040
1041   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1042     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1043
1044   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1045     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1046
1047   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1048     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1049
1050   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1051     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1052
1053   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1054     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1057     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1060     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1063     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1066     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1069     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1072     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1075     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1078     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1079
1080   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1081     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1082
1083   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1084     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1085
1086   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1087     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1088
1089   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1090     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1091
1092   if (code == OMP_CLAUSE)
1093     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1094 }
1095
1096
1097 /* Read an index IX from input block IB and return the tree node at
1098    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1099
1100 tree
1101 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1102 {
1103   unsigned HOST_WIDE_INT ix;
1104   tree result;
1105   enum LTO_tags expected_tag;
1106
1107   ix = streamer_read_uhwi (ib);
1108   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1109
1110   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1111   gcc_assert (result
1112               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1113
1114   return result;
1115 }
1116
1117
1118 /* Read a code and class from input block IB and return the
1119    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1120
1121 tree
1122 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1123 {
1124   enum built_in_class fclass;
1125   enum built_in_function fcode;
1126   const char *asmname;
1127   tree result;
1128
1129   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1130   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1131
1132   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1133
1134   if (fclass == BUILT_IN_NORMAL)
1135     {
1136       if (fcode >= END_BUILTINS)
1137         fatal_error ("machine independent builtin code out of range");
1138       result = builtin_decl_explicit (fcode);
1139       gcc_assert (result);
1140     }
1141   else if (fclass == BUILT_IN_MD)
1142     {
1143       result = targetm.builtin_decl (fcode, true);
1144       if (!result || result == error_mark_node)
1145         fatal_error ("target specific builtin not available");
1146     }
1147   else
1148     gcc_unreachable ();
1149
1150   asmname = streamer_read_string (data_in, ib);
1151   if (asmname)
1152     set_builtin_user_assembler_name (result, asmname);
1153
1154   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1155
1156   return result;
1157 }