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   /* Clear all bits of the real value type so that we can later do
 171      bitwise comparisons to see if two values are the same.  */
 172   memset (&r, 0, sizeof r);
 173   r.cl = (unsigned) bp_unpack_value (bp, 2);
 174   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 175   r.sign = (unsigned) bp_unpack_value (bp, 1);
 176   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 177   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 178   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 179   for (i = 0; i < SIGSZ; i++)
 180     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 181
 182   rp = ggc_alloc_real_value ();
 183   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 184   TREE_REAL_CST_PTR (expr) = rp;
 185 }
 186
 187
 188 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 189    expression EXPR from bitpack BP.  */
 190
 191 static void
 192 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 193 {
 194   FIXED_VALUE_TYPE *fp = ggc_alloc_fixed_value ();
 195   fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 196   fp->data.low = bp_unpack_var_len_int (bp);
 197   fp->data.high = bp_unpack_var_len_int (bp);
 198   TREE_FIXED_CST_PTR (expr) = fp;
 199 }
 200
 201 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 202    of expression EXPR from bitpack BP.  */
 203
 204 static void
 205 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 206 {
 207   DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 208   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 209   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 210   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 211   DECL_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 212   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 213   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 214   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 215   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 216   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 217   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 218
 219   if (TREE_CODE (expr) == LABEL_DECL)
 220     {
 221       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 222
 223       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 224          force gimple_set_bb to recreate label_to_block_map.  */
 225       LABEL_DECL_UID (expr) = -1;
 226     }
 227
 228   if (TREE_CODE (expr) == FIELD_DECL)
 229     {
 230       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 231       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 232       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 233     }
 234
 235   if (TREE_CODE (expr) == VAR_DECL)
 236     {
 237       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 238       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 239     }
 240
 241   if (TREE_CODE (expr) == RESULT_DECL
 242       || TREE_CODE (expr) == PARM_DECL
 243       || TREE_CODE (expr) == VAR_DECL)
 244     {
 245       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 246       if (TREE_CODE (expr) == VAR_DECL
 247           || TREE_CODE (expr) == PARM_DECL)
 248         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 249     }
 250 }
 251
 252
 253 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 254    of expression EXPR from bitpack BP.  */
 255
 256 static void
 257 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 258 {
 259   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 260 }
 261
 262
 263 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 264    of expression EXPR from bitpack BP.  */
 265
 266 static void
 267 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 268 {
 269   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 270   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 271   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 272   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 273   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 274   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 275   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 276
 277   if (TREE_CODE (expr) == VAR_DECL)
 278     {
 279       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 280       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 281       DECL_TLS_MODEL (expr) = (enum tls_model) bp_unpack_value (bp,  3);
 282     }
 283
 284   if (TREE_CODE (expr) == FUNCTION_DECL)
 285     {
 286       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 287       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 288       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 289     }
 290   if (VAR_OR_FUNCTION_DECL_P (expr))
 291     {
 292       priority_type p;
 293       p = (priority_type) bp_unpack_var_len_unsigned (bp);
 294       SET_DECL_INIT_PRIORITY (expr, p);
 295     }
 296 }
 297
 298
 299 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 300    of expression EXPR from bitpack BP.  */
 301
 302 static void
 303 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 304 {
 305   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 306                                                BUILT_IN_LAST);
 307   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 308   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 309   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 310   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 311   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 312   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 313   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 314   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 315   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 316   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 317   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 318   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 319                         = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 325     {
 326       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 327                                                                             11);
 328       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 329           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 330         fatal_error ("machine independent builtin code out of range");
 331       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 332         {
 333           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 334           if (!result || result == error_mark_node)
 335             fatal_error ("target specific builtin not available");
 336         }
 337     }
 338   if (DECL_STATIC_DESTRUCTOR (expr))
 339     {
 340       priority_type p;
 341       p = (priority_type) bp_unpack_var_len_unsigned (bp);
 342       SET_DECL_FINI_PRIORITY (expr, p);
 343     }
 344 }
 345
 346
 347 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 348    of expression EXPR from bitpack BP.  */
 349
 350 static void
 351 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 352 {
 353   enum machine_mode mode;
 354
 355   mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 356   SET_TYPE_MODE (expr, mode);
 357   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 358   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 359   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 360   if (RECORD_OR_UNION_TYPE_P (expr))
 361     {
 362       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 363       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 364     }
 365   else if (TREE_CODE (expr) == ARRAY_TYPE)
 366     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 367   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 368   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 369   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 370   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 371   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 372   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 373   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 374 }
 375
 376
 377 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 378    of expression EXPR from bitpack BP.  */
 379
 380 static void
 381 unpack_ts_block_value_fields (struct data_in *data_in,
 382                               struct bitpack_d *bp, tree expr)
 383 {
 384   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 385   /* BLOCK_NUMBER is recomputed.  */
 386   BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 387 }
 388
 389 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 390    structure of expression EXPR from bitpack BP.  */
 391
 392 static void
 393 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 394                                               struct bitpack_d *bp, tree expr)
 395 {
 396   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 397   vec_safe_push (all_translation_units, expr);
 398 }
 399
 400 /* Unpack a TS_OPTIMIZATION tree from BP into EXPR.  */
 401
 402 static void
 403 unpack_ts_optimization (struct bitpack_d *bp, tree expr)
 404 {
 405   unsigned i, len;
 406   struct cl_optimization *t = TREE_OPTIMIZATION (expr);
 407
 408   len = sizeof (struct cl_optimization);
 409   for (i = 0; i < len; i++)
 410     ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
 411   if (bp_unpack_value (bp, 32) != 0x12345678)
 412     fatal_error ("cl_optimization size mismatch in LTO reader and writer");
 413 }
 414
 415
 416 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 417    structure of expression EXPR from bitpack BP.  */
 418
 419 static void
 420 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 421                                    struct bitpack_d *bp, tree expr)
 422 {
 423   OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in);
 424   switch (OMP_CLAUSE_CODE (expr))
 425     {
 426     case OMP_CLAUSE_DEFAULT:
 427       OMP_CLAUSE_DEFAULT_KIND (expr)
 428         = bp_unpack_enum (bp, omp_clause_default_kind,
 429                           OMP_CLAUSE_DEFAULT_LAST);
 430       break;
 431     case OMP_CLAUSE_SCHEDULE:
 432       OMP_CLAUSE_SCHEDULE_KIND (expr)
 433         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 434                           OMP_CLAUSE_SCHEDULE_LAST);
 435       break;
 436     case OMP_CLAUSE_DEPEND:
 437       OMP_CLAUSE_DEPEND_KIND (expr)
 438         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 439       break;
 440     case OMP_CLAUSE_MAP:
 441       OMP_CLAUSE_MAP_KIND (expr)
 442         = bp_unpack_enum (bp, omp_clause_map_kind, OMP_CLAUSE_MAP_LAST);
 443       break;
 444     case OMP_CLAUSE_PROC_BIND:
 445       OMP_CLAUSE_PROC_BIND_KIND (expr)
 446         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 447                           OMP_CLAUSE_PROC_BIND_LAST);
 448       break;
 449     case OMP_CLAUSE_REDUCTION:
 450       OMP_CLAUSE_REDUCTION_CODE (expr)
 451         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 452       break;
 453     default:
 454       break;
 455     }
 456 }
 457
 458 /* Unpack all the non-pointer fields in EXPR into a bit pack.  */
 459
 460 static void
 461 unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
 462 {
 463   enum tree_code code;
 464
 465   code = TREE_CODE (expr);
 466
 467   /* Note that all these functions are highly sensitive to changes in
 468      the types and sizes of each of the fields being packed.  */
 469   unpack_ts_base_value_fields (bp, expr);
 470
 471   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 472     unpack_ts_int_cst_value_fields (bp, expr);
 473
 474   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 475     unpack_ts_real_cst_value_fields (bp, expr);
 476
 477   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 478     unpack_ts_fixed_cst_value_fields (bp, expr);
 479
 480   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 481     DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 482
 483   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 484     unpack_ts_decl_common_value_fields (bp, expr);
 485
 486   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 487     unpack_ts_decl_wrtl_value_fields (bp, expr);
 488
 489   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 490     unpack_ts_decl_with_vis_value_fields (bp, expr);
 491
 492   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 493     unpack_ts_function_decl_value_fields (bp, expr);
 494
 495   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 496     unpack_ts_type_common_value_fields (bp, expr);
 497
 498   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 499     SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
 500
 501   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 502     unpack_ts_block_value_fields (data_in, bp, expr);
 503
 504   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 505     unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
 506
 507   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 508     gcc_unreachable ();
 509
 510   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 511     unpack_ts_optimization (bp, expr);
 512
 513   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 514     {
 515       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 516       if (length > 0)
 517         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 518     }
 519
 520   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 521     {
 522       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 523       if (length > 0)
 524         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 525     }
 526
 527   if (code == OMP_CLAUSE)
 528     unpack_ts_omp_clause_value_fields (data_in, bp, expr);
 529 }
 530
 531
 532 /* Read all the language-independent bitfield values for EXPR from IB.
 533    Return the partially unpacked bitpack so the caller can unpack any other
 534    bitfield values that the writer may have written.  */
 535
 536 struct bitpack_d
 537 streamer_read_tree_bitfields (struct lto_input_block *ib,
 538                               struct data_in *data_in, tree expr)
 539 {
 540   enum tree_code code;
 541   struct bitpack_d bp;
 542
 543   /* Read the bitpack of non-pointer values from IB.  */
 544   bp = streamer_read_bitpack (ib);
 545
 546   /* The first word in BP contains the code of the tree that we
 547      are about to read.  */
 548   code = (enum tree_code) bp_unpack_value (&bp, 16);
 549   lto_tag_check (lto_tree_code_to_tag (code),
 550                  lto_tree_code_to_tag (TREE_CODE (expr)));
 551
 552   /* Unpack all the value fields from BP.  */
 553   unpack_value_fields (data_in, &bp, expr);
 554
 555   return bp;
 556 }
 557
 558
 559 /* Materialize a new tree from input block IB using descriptors in
 560    DATA_IN.  The code for the new tree should match TAG.  Store in
 561    *IX_P the index into the reader cache where the new tree is stored.  */
 562
 563 tree
 564 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 565                      enum LTO_tags tag)
 566 {
 567   enum tree_code code;
 568   tree result;
 569 #ifdef LTO_STREAMER_DEBUG
 570   HOST_WIDEST_INT orig_address_in_writer;
 571 #endif
 572
 573   result = NULL_TREE;
 574
 575 #ifdef LTO_STREAMER_DEBUG
 576   /* Read the word representing the memory address for the tree
 577      as it was written by the writer.  This is useful when
 578      debugging differences between the writer and reader.  */
 579   orig_address_in_writer = streamer_read_hwi (ib);
 580   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 581 #endif
 582
 583   code = lto_tag_to_tree_code (tag);
 584
 585   /* We should never see an SSA_NAME tree.  Only the version numbers of
 586      SSA names are ever written out.  See input_ssa_names.  */
 587   gcc_assert (code != SSA_NAME);
 588
 589   /* Instantiate a new tree using the header data.  */
 590   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 591     result = streamer_read_string_cst (data_in, ib);
 592   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 593     result = input_identifier (data_in, ib);
 594   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 595     {
 596       HOST_WIDE_INT len = streamer_read_hwi (ib);
 597       result = make_tree_vec (len);
 598     }
 599   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 600     {
 601       HOST_WIDE_INT len = streamer_read_hwi (ib);
 602       result = make_vector (len);
 603     }
 604   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 605     {
 606       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 607       result = make_tree_binfo (len);
 608     }
 609   else if (code == CALL_EXPR)
 610     {
 611       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 612       return build_vl_exp (CALL_EXPR, nargs + 3);
 613     }
 614   else if (code == OMP_CLAUSE)
 615     {
 616       enum omp_clause_code subcode
 617         = (enum omp_clause_code) streamer_read_uhwi (ib);
 618       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 619     }
 620   else
 621     {
 622       /* For all other nodes, materialize the tree with a raw
 623          make_node call.  */
 624       result = make_node (code);
 625     }
 626
 627 #ifdef LTO_STREAMER_DEBUG
 628   /* Store the original address of the tree as seen by the writer
 629      in RESULT's aux field.  This is useful when debugging streaming
 630      problems.  This way, a debugging session can be started on
 631      both writer and reader with a breakpoint using this address
 632      value in both.  */
 633   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 634 #endif
 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 i;
 663   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 664     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 665 }
 666
 667
 668 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 669    block IB.  DATA_IN contains tables and descriptors for the
 670    file being read.  */
 671
 672 static void
 673 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 674                                     struct data_in *data_in, tree expr)
 675 {
 676   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 677   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 678 }
 679
 680
 681 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 682    from input block IB.  DATA_IN contains tables and descriptors for the
 683    file being read.  */
 684
 685 static void
 686 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 687                                          struct data_in *data_in, tree expr)
 688 {
 689   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 690   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 691 }
 692
 693
 694 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 695    input block IB.  DATA_IN contains tables and descriptors for the
 696    file being read.  */
 697
 698 static void
 699 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 700                                         struct data_in *data_in, tree expr)
 701 {
 702   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 703   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 704   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 705
 706   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 707      for early inlining so drop it on the floor instead of ICEing in
 708      dwarf2out.c.  */
 709
 710   if ((TREE_CODE (expr) == VAR_DECL
 711        || TREE_CODE (expr) == PARM_DECL)
 712       && DECL_HAS_VALUE_EXPR_P (expr))
 713     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 714
 715   if (TREE_CODE (expr) == VAR_DECL)
 716     {
 717       tree dexpr = stream_read_tree (ib, data_in);
 718       if (dexpr)
 719         SET_DECL_DEBUG_EXPR (expr, dexpr);
 720     }
 721 }
 722
 723
 724 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 725    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 726    file being read.  */
 727
 728 static void
 729 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 730                                             struct data_in *data_in, tree expr)
 731 {
 732   if (TREE_CODE (expr) == TYPE_DECL)
 733     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 734   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 735 }
 736
 737
 738 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 739    from input block IB.  DATA_IN contains tables and descriptors for the
 740    file being read.  */
 741
 742 static void
 743 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 744                                           struct data_in *data_in, tree expr)
 745 {
 746   tree id;
 747
 748   id = stream_read_tree (ib, data_in);
 749   if (id)
 750     {
 751       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 752       SET_DECL_ASSEMBLER_NAME (expr, id);
 753     }
 754
 755   DECL_SECTION_NAME (expr) = stream_read_tree (ib, data_in);
 756   DECL_COMDAT_GROUP (expr) = stream_read_tree (ib, data_in);
 757 }
 758
 759
 760 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 761    input block IB.  DATA_IN contains tables and descriptors for the
 762    file being read.  */
 763
 764 static void
 765 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 766                                        struct data_in *data_in, tree expr)
 767 {
 768   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 769   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 770   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 771   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 772   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 773 }
 774
 775
 776 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 777    from input block IB.  DATA_IN contains tables and descriptors for the
 778    file being read.  */
 779
 780 static void
 781 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 782                                           struct data_in *data_in, tree expr)
 783 {
 784   /* DECL_STRUCT_FUNCTION is handled by lto_input_function.  FIXME lto,
 785      maybe it should be handled here?  */
 786   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 787   /* DECL_FUNCTION_SPECIFIC_TARGET is regenerated from attributes.  */
 788   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 789
 790   /* If the file contains a function with an EH personality set,
 791      then it was compiled with -fexceptions.  In that case, initialize
 792      the backend EH machinery.  */
 793   if (DECL_FUNCTION_PERSONALITY (expr))
 794     lto_init_eh ();
 795 }
 796
 797
 798 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 799    input block IB.  DATA_IN contains tables and descriptors for the file
 800    being read.  */
 801
 802 static void
 803 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 804                                         struct data_in *data_in, tree expr)
 805 {
 806   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 807   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 808   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 809   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 810   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 811      reconstructed during fixup.  */
 812   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 813      during fixup.  */
 814   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 815   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 816   /* TYPE_CANONICAL gets re-computed during type merging.  */
 817   TYPE_CANONICAL (expr) = NULL_TREE;
 818   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 819 }
 820
 821 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 822    from input block IB.  DATA_IN contains tables and descriptors for the
 823    file being read.  */
 824
 825 static void
 826 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 827                                             struct data_in *data_in,
 828                                             tree expr)
 829 {
 830   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 831     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 832   else if (TREE_CODE (expr) == ARRAY_TYPE)
 833     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 834   else if (RECORD_OR_UNION_TYPE_P (expr))
 835     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 836   else if (TREE_CODE (expr) == FUNCTION_TYPE
 837            || TREE_CODE (expr) == METHOD_TYPE)
 838     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 839
 840   if (!POINTER_TYPE_P (expr))
 841     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 842   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 843   if (RECORD_OR_UNION_TYPE_P (expr))
 844     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 845 }
 846
 847
 848 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 849    block IB.  DATA_IN contains tables and descriptors for the
 850    file being read.  */
 851
 852 static void
 853 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 854                                  struct data_in *data_in, tree expr)
 855 {
 856   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 857   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 858   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 859 }
 860
 861
 862 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 863    block IB.  DATA_IN contains tables and descriptors for the
 864    file being read.  */
 865
 866 static void
 867 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 868                                 struct data_in *data_in, tree expr)
 869 {
 870   int i;
 871
 872   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 873      instantiate EXPR.  */
 874   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 875     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 876 }
 877
 878
 879 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 880    block IB.  DATA_IN contains tables and descriptors for the
 881    file being read.  */
 882
 883
 884 static void
 885 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 886                                 struct data_in *data_in, tree expr)
 887 {
 888   int i;
 889
 890   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 891     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 892
 893   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 894 }
 895
 896
 897 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 898    block IB.  DATA_IN contains tables and descriptors for the
 899    file being read.  */
 900
 901 static void
 902 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 903                                   struct data_in *data_in, tree expr)
 904 {
 905   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 906
 907   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 908
 909   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 910      the limited cases we can handle - those that represent inlined
 911      function scopes.  For the rest them on the floor instead of ICEing in
 912      dwarf2out.c.  */
 913   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 914   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 915      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 916      dwarf2out.c.  */
 917
 918   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 919      streaming time.  */
 920
 921   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 922      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 923      stream the child relationship explicitly.  */
 924   if (BLOCK_SUPERCONTEXT (expr)
 925       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 926     {
 927       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 928       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 929     }
 930
 931   /* The global block is rooted at the TU decl.  Hook it here to
 932      avoid the need to stream in this block during WPA time.  */
 933   else if (BLOCK_SUPERCONTEXT (expr)
 934            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 935     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 936
 937   /* The function-level block is connected at the time we read in
 938      function bodies for the same reason.  */
 939 }
 940
 941
 942 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 943    block IB.  DATA_IN contains tables and descriptors for the
 944    file being read.  */
 945
 946 static void
 947 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 948                                   struct data_in *data_in, tree expr)
 949 {
 950   unsigned i;
 951   tree t;
 952
 953   /* Note that the number of slots in EXPR was read in
 954      streamer_alloc_tree when instantiating EXPR.  However, the
 955      vector is empty so we cannot rely on vec::length to know how many
 956      elements to read.  So, this list is emitted as a 0-terminated
 957      list on the writer side.  */
 958   do
 959     {
 960       t = stream_read_tree (ib, data_in);
 961       if (t)
 962         BINFO_BASE_BINFOS (expr)->quick_push (t);
 963     }
 964   while (t);
 965
 966   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 967   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 968   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 969
 970   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 971      unpacking the bitfield section.  */
 972   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 973     {
 974       tree a = stream_read_tree (ib, data_in);
 975       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 976     }
 977   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 978      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 979 }
 980
 981
 982 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 983    input block IB.  DATA_IN contains tables and descriptors for the
 984    file being read.  */
 985
 986 static void
 987 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 988                                         struct data_in *data_in, tree expr)
 989 {
 990   unsigned i;
 991
 992   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
 993     {
 994       constructor_elt e;
 995       e.index = stream_read_tree (ib, data_in);
 996       e.value = stream_read_tree (ib, data_in);
 997       (*CONSTRUCTOR_ELTS (expr))[i] = e;
 998     }
 999 }
1000
1001
1002 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1003    input block IB.  DATA_IN contains tables and descriptors for the
1004    file being read.  */
1005
1006 static void
1007 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1008                                        struct data_in *data_in, tree expr)
1009 {
1010   int i;
1011
1012   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1013     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1014   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1015 }
1016
1017
1018 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1019    contains tables and descriptors for the file being read.  */
1020
1021 void
1022 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1023                          tree expr)
1024 {
1025   enum tree_code code;
1026
1027   code = TREE_CODE (expr);
1028
1029   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1030     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1031
1032   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1033     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1034
1035   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1036     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1037
1038   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1039     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1040
1041   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1042     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1043
1044   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1045     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1046
1047   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1048     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1049
1050   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1051     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1052
1053   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1054     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1057     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1060     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1063     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1066     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1069     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1072     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1075     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1078     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1079
1080   if (code == OMP_CLAUSE)
1081     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1082 }
1083
1084
1085 /* Read an index IX from input block IB and return the tree node at
1086    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1087
1088 tree
1089 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1090 {
1091   unsigned HOST_WIDE_INT ix;
1092   tree result;
1093   enum LTO_tags expected_tag;
1094
1095   ix = streamer_read_uhwi (ib);
1096   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1097
1098   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1099   gcc_assert (result
1100               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1101
1102   return result;
1103 }
1104
1105
1106 /* Read a code and class from input block IB and return the
1107    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1108
1109 tree
1110 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1111 {
1112   enum built_in_class fclass;
1113   enum built_in_function fcode;
1114   const char *asmname;
1115   tree result;
1116
1117   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1118   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1119
1120   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1121
1122   if (fclass == BUILT_IN_NORMAL)
1123     {
1124       if (fcode >= END_BUILTINS)
1125         fatal_error ("machine independent builtin code out of range");
1126       result = builtin_decl_explicit (fcode);
1127       gcc_assert (result);
1128     }
1129   else if (fclass == BUILT_IN_MD)
1130     {
1131       result = targetm.builtin_decl (fcode, true);
1132       if (!result || result == error_mark_node)
1133         fatal_error ("target specific builtin not available");
1134     }
1135   else
1136     gcc_unreachable ();
1137
1138   asmname = streamer_read_string (data_in, ib);
1139   if (asmname)
1140     set_builtin_user_assembler_name (result, asmname);
1141
1142   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1143
1144   return result;
1145 }