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 #include "builtins.h"
  39
  40 /* Read a STRING_CST from the string table in DATA_IN using input
  41    block IB.  */
  42
  43 tree
  44 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  45 {
  46   unsigned int len;
  47   const char * ptr;
  48
  49   ptr = streamer_read_indexed_string (data_in, ib, &len);
  50   if (!ptr)
  51     return NULL;
  52   return build_string (len, ptr);
  53 }
  54
  55
  56 /* Read an IDENTIFIER from the string table in DATA_IN using input
  57    block IB.  */
  58
  59 static tree
  60 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  61 {
  62   unsigned int len;
  63   const char *ptr;
  64
  65   ptr = streamer_read_indexed_string (data_in, ib, &len);
  66   if (!ptr)
  67     return NULL;
  68   return get_identifier_with_length (ptr, len);
  69 }
  70
  71
  72 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  73    tables and descriptors for the file being read.  */
  74
  75 tree
  76 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  77 {
  78   tree first, prev, curr;
  79
  80   /* The chain is written as NULL terminated list of trees.  */
  81   first = prev = NULL_TREE;
  82   do
  83     {
  84       curr = stream_read_tree (ib, data_in);
  85       if (prev)
  86         TREE_CHAIN (prev) = curr;
  87       else
  88         first = curr;
  89
  90       prev = curr;
  91     }
  92   while (curr);
  93
  94   return first;
  95 }
  96
  97
  98 /* Unpack all the non-pointer fields of the TS_BASE structure of
  99    expression EXPR from bitpack BP.  */
 100
 101 static void
 102 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 103 {
 104   /* Note that the code for EXPR has already been unpacked to create EXPR in
 105      streamer_alloc_tree.  */
 106   if (!TYPE_P (expr))
 107     {
 108       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 109       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 110       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 111
 112       /* TREE_PUBLIC is used on types to indicate that the type
 113          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 114          so we skip it here.  */
 115       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 116     }
 117   else
 118     bp_unpack_value (bp, 4);
 119   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 120   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 121   if (DECL_P (expr))
 122     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 123   else if (TYPE_P (expr))
 124     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 125   else
 126     bp_unpack_value (bp, 1);
 127   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 128   if (TYPE_P (expr))
 129     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 130   else
 131     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 132   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 134   if (TREE_CODE (expr) != TREE_BINFO)
 135     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 138   if (TYPE_P (expr))
 139     {
 140       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 141       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 142     }
 143   else if (TREE_CODE (expr) == SSA_NAME)
 144     SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 145   else
 146     bp_unpack_value (bp, 1);
 147 }
 148
 149
 150 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 151    expression EXPR from bitpack BP.  */
 152
 153 static void
 154 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 155 {
 156   int i;
 157   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 158     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 159 }
 160
 161
 162 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 163    expression EXPR from bitpack BP.  */
 164
 165 static void
 166 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 167 {
 168   unsigned i;
 169   REAL_VALUE_TYPE r;
 170   REAL_VALUE_TYPE *rp;
 171
 172   /* Clear all bits of the real value type so that we can later do
 173      bitwise comparisons to see if two values are the same.  */
 174   memset (&r, 0, sizeof r);
 175   r.cl = (unsigned) bp_unpack_value (bp, 2);
 176   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 177   r.sign = (unsigned) bp_unpack_value (bp, 1);
 178   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 179   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 180   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 181   for (i = 0; i < SIGSZ; i++)
 182     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 183
 184   rp = ggc_alloc<real_value> ();
 185   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 186   TREE_REAL_CST_PTR (expr) = rp;
 187 }
 188
 189
 190 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 191    expression EXPR from bitpack BP.  */
 192
 193 static void
 194 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 195 {
 196   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 197   fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 198   fp->data.low = bp_unpack_var_len_int (bp);
 199   fp->data.high = bp_unpack_var_len_int (bp);
 200   TREE_FIXED_CST_PTR (expr) = fp;
 201 }
 202
 203 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 204    of expression EXPR from bitpack BP.  */
 205
 206 static void
 207 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 208 {
 209   DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 210   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 211   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 212   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 213   DECL_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 214   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 215   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 216   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 217   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 218   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 219   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 220
 221   if (TREE_CODE (expr) == LABEL_DECL)
 222     {
 223       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 224
 225       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 226          force gimple_set_bb to recreate label_to_block_map.  */
 227       LABEL_DECL_UID (expr) = -1;
 228     }
 229
 230   if (TREE_CODE (expr) == FIELD_DECL)
 231     {
 232       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 233       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 234       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 235     }
 236
 237   if (TREE_CODE (expr) == VAR_DECL)
 238     {
 239       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 240       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 241     }
 242
 243   if (TREE_CODE (expr) == RESULT_DECL
 244       || TREE_CODE (expr) == PARM_DECL
 245       || TREE_CODE (expr) == VAR_DECL)
 246     {
 247       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 248       if (TREE_CODE (expr) == VAR_DECL
 249           || TREE_CODE (expr) == PARM_DECL)
 250         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 251     }
 252 }
 253
 254
 255 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 256    of expression EXPR from bitpack BP.  */
 257
 258 static void
 259 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 260 {
 261   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 262 }
 263
 264
 265 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 266    of expression EXPR from bitpack BP.  */
 267
 268 static void
 269 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 270 {
 271   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 272   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 273   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 274   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 275   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 276   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 277   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 278
 279   if (TREE_CODE (expr) == VAR_DECL)
 280     {
 281       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 282       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 283     }
 284
 285   if (TREE_CODE (expr) == FUNCTION_DECL)
 286     {
 287       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 288       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 289       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 290     }
 291 }
 292
 293
 294 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 295    of expression EXPR from bitpack BP.  */
 296
 297 static void
 298 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 299 {
 300   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 301                                                BUILT_IN_LAST);
 302   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 303   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 304   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 305   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 306   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 307   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 308   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 309   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 310   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 311   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 312   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 313   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 314                         = (unsigned) bp_unpack_value (bp, 1);
 315   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 316   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 317   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 318   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 319   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 320     {
 321       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 322                                                                             11);
 323       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 324           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 325         fatal_error ("machine independent builtin code out of range");
 326       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 327         {
 328           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 329           if (!result || result == error_mark_node)
 330             fatal_error ("target specific builtin not available");
 331         }
 332     }
 333 }
 334
 335
 336 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 337    of expression EXPR from bitpack BP.  */
 338
 339 static void
 340 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 341 {
 342   enum machine_mode mode;
 343
 344   mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 345   SET_TYPE_MODE (expr, mode);
 346   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 347   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 348   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 349   if (RECORD_OR_UNION_TYPE_P (expr))
 350     {
 351       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 352       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 353     }
 354   else if (TREE_CODE (expr) == ARRAY_TYPE)
 355     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 356   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 357   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 358   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 359   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 360   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 361   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 362   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 363 }
 364
 365
 366 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 367    of expression EXPR from bitpack BP.  */
 368
 369 static void
 370 unpack_ts_block_value_fields (struct data_in *data_in,
 371                               struct bitpack_d *bp, tree expr)
 372 {
 373   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 374   /* BLOCK_NUMBER is recomputed.  */
 375   BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 376 }
 377
 378 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 379    structure of expression EXPR from bitpack BP.  */
 380
 381 static void
 382 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 383                                               struct bitpack_d *bp, tree expr)
 384 {
 385   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 386   vec_safe_push (all_translation_units, expr);
 387 }
 388
 389 /* Unpack a TS_OPTIMIZATION tree from BP into EXPR.  */
 390
 391 static void
 392 unpack_ts_optimization (struct bitpack_d *bp, tree expr)
 393 {
 394   unsigned i, len;
 395   struct cl_optimization *t = TREE_OPTIMIZATION (expr);
 396
 397   len = sizeof (struct cl_optimization);
 398   for (i = 0; i < len; i++)
 399     ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
 400   if (bp_unpack_value (bp, 32) != 0x12345678)
 401     fatal_error ("cl_optimization size mismatch in LTO reader and writer");
 402 }
 403
 404
 405 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 406    structure of expression EXPR from bitpack BP.  */
 407
 408 static void
 409 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 410                                    struct bitpack_d *bp, tree expr)
 411 {
 412   OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in);
 413   switch (OMP_CLAUSE_CODE (expr))
 414     {
 415     case OMP_CLAUSE_DEFAULT:
 416       OMP_CLAUSE_DEFAULT_KIND (expr)
 417         = bp_unpack_enum (bp, omp_clause_default_kind,
 418                           OMP_CLAUSE_DEFAULT_LAST);
 419       break;
 420     case OMP_CLAUSE_SCHEDULE:
 421       OMP_CLAUSE_SCHEDULE_KIND (expr)
 422         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 423                           OMP_CLAUSE_SCHEDULE_LAST);
 424       break;
 425     case OMP_CLAUSE_DEPEND:
 426       OMP_CLAUSE_DEPEND_KIND (expr)
 427         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 428       break;
 429     case OMP_CLAUSE_MAP:
 430       OMP_CLAUSE_MAP_KIND (expr)
 431         = bp_unpack_enum (bp, omp_clause_map_kind, OMP_CLAUSE_MAP_LAST);
 432       break;
 433     case OMP_CLAUSE_PROC_BIND:
 434       OMP_CLAUSE_PROC_BIND_KIND (expr)
 435         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 436                           OMP_CLAUSE_PROC_BIND_LAST);
 437       break;
 438     case OMP_CLAUSE_REDUCTION:
 439       OMP_CLAUSE_REDUCTION_CODE (expr)
 440         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 441       break;
 442     default:
 443       break;
 444     }
 445 }
 446
 447 /* Unpack all the non-pointer fields in EXPR into a bit pack.  */
 448
 449 static void
 450 unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
 451 {
 452   enum tree_code code;
 453
 454   code = TREE_CODE (expr);
 455
 456   /* Note that all these functions are highly sensitive to changes in
 457      the types and sizes of each of the fields being packed.  */
 458   unpack_ts_base_value_fields (bp, expr);
 459
 460   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 461     unpack_ts_int_cst_value_fields (bp, expr);
 462
 463   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 464     unpack_ts_real_cst_value_fields (bp, expr);
 465
 466   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 467     unpack_ts_fixed_cst_value_fields (bp, expr);
 468
 469   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 470     DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 471
 472   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 473     unpack_ts_decl_common_value_fields (bp, expr);
 474
 475   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 476     unpack_ts_decl_wrtl_value_fields (bp, expr);
 477
 478   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 479     unpack_ts_decl_with_vis_value_fields (bp, expr);
 480
 481   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 482     unpack_ts_function_decl_value_fields (bp, expr);
 483
 484   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 485     unpack_ts_type_common_value_fields (bp, expr);
 486
 487   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 488     SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
 489
 490   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 491     unpack_ts_block_value_fields (data_in, bp, expr);
 492
 493   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 494     unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 497     gcc_unreachable ();
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 500     unpack_ts_optimization (bp, expr);
 501
 502   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 503     {
 504       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 505       if (length > 0)
 506         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 507     }
 508
 509   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 510     {
 511       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 512       if (length > 0)
 513         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 514     }
 515
 516   if (code == OMP_CLAUSE)
 517     unpack_ts_omp_clause_value_fields (data_in, bp, expr);
 518 }
 519
 520
 521 /* Read all the language-independent bitfield values for EXPR from IB.
 522    Return the partially unpacked bitpack so the caller can unpack any other
 523    bitfield values that the writer may have written.  */
 524
 525 struct bitpack_d
 526 streamer_read_tree_bitfields (struct lto_input_block *ib,
 527                               struct data_in *data_in, tree expr)
 528 {
 529   enum tree_code code;
 530   struct bitpack_d bp;
 531
 532   /* Read the bitpack of non-pointer values from IB.  */
 533   bp = streamer_read_bitpack (ib);
 534
 535   /* The first word in BP contains the code of the tree that we
 536      are about to read.  */
 537   code = (enum tree_code) bp_unpack_value (&bp, 16);
 538   lto_tag_check (lto_tree_code_to_tag (code),
 539                  lto_tree_code_to_tag (TREE_CODE (expr)));
 540
 541   /* Unpack all the value fields from BP.  */
 542   unpack_value_fields (data_in, &bp, expr);
 543
 544   return bp;
 545 }
 546
 547
 548 /* Materialize a new tree from input block IB using descriptors in
 549    DATA_IN.  The code for the new tree should match TAG.  Store in
 550    *IX_P the index into the reader cache where the new tree is stored.  */
 551
 552 tree
 553 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 554                      enum LTO_tags tag)
 555 {
 556   enum tree_code code;
 557   tree result;
 558 #ifdef LTO_STREAMER_DEBUG
 559   HOST_WIDE_INT orig_address_in_writer;
 560 #endif
 561
 562   result = NULL_TREE;
 563
 564 #ifdef LTO_STREAMER_DEBUG
 565   /* Read the word representing the memory address for the tree
 566      as it was written by the writer.  This is useful when
 567      debugging differences between the writer and reader.  */
 568   orig_address_in_writer = streamer_read_hwi (ib);
 569   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 570 #endif
 571
 572   code = lto_tag_to_tree_code (tag);
 573
 574   /* We should never see an SSA_NAME tree.  Only the version numbers of
 575      SSA names are ever written out.  See input_ssa_names.  */
 576   gcc_assert (code != SSA_NAME);
 577
 578   /* Instantiate a new tree using the header data.  */
 579   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 580     result = streamer_read_string_cst (data_in, ib);
 581   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 582     result = input_identifier (data_in, ib);
 583   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 584     {
 585       HOST_WIDE_INT len = streamer_read_hwi (ib);
 586       result = make_tree_vec (len);
 587     }
 588   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 589     {
 590       HOST_WIDE_INT len = streamer_read_hwi (ib);
 591       result = make_vector (len);
 592     }
 593   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 594     {
 595       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 596       result = make_tree_binfo (len);
 597     }
 598   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 599     {
 600       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 601       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 602       result = make_int_cst (len, ext_len);
 603     }
 604   else if (code == CALL_EXPR)
 605     {
 606       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 607       return build_vl_exp (CALL_EXPR, nargs + 3);
 608     }
 609   else if (code == OMP_CLAUSE)
 610     {
 611       enum omp_clause_code subcode
 612         = (enum omp_clause_code) streamer_read_uhwi (ib);
 613       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 614     }
 615   else
 616     {
 617       /* For all other nodes, materialize the tree with a raw
 618          make_node call.  */
 619       result = make_node (code);
 620     }
 621
 622 #ifdef LTO_STREAMER_DEBUG
 623   /* Store the original address of the tree as seen by the writer
 624      in RESULT's aux field.  This is useful when debugging streaming
 625      problems.  This way, a debugging session can be started on
 626      both writer and reader with a breakpoint using this address
 627      value in both.  */
 628   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 629 #endif
 630
 631   return result;
 632 }
 633
 634
 635 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 636    block IB.  DATA_IN contains tables and descriptors for the
 637    file being read.  */
 638
 639
 640 static void
 641 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 642                                    struct data_in *data_in, tree expr)
 643 {
 644   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 645     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 646 }
 647
 648
 649 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 650    block IB.  DATA_IN contains tables and descriptors for the
 651    file being read.  */
 652
 653 static void
 654 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 655                                    struct data_in *data_in, tree expr)
 656 {
 657   unsigned i;
 658   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 659     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 660 }
 661
 662
 663 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 664    block IB.  DATA_IN contains tables and descriptors for the
 665    file being read.  */
 666
 667 static void
 668 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 669                                     struct data_in *data_in, tree expr)
 670 {
 671   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 672   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 673 }
 674
 675
 676 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 677    from input block IB.  DATA_IN contains tables and descriptors for the
 678    file being read.  */
 679
 680 static void
 681 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 682                                          struct data_in *data_in, tree expr)
 683 {
 684   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 685   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 686 }
 687
 688
 689 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 690    input block IB.  DATA_IN contains tables and descriptors for the
 691    file being read.  */
 692
 693 static void
 694 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 695                                         struct data_in *data_in, tree expr)
 696 {
 697   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 698   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 699   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 700
 701   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 702      for early inlining so drop it on the floor instead of ICEing in
 703      dwarf2out.c.  */
 704
 705   if ((TREE_CODE (expr) == VAR_DECL
 706        || TREE_CODE (expr) == PARM_DECL)
 707       && DECL_HAS_VALUE_EXPR_P (expr))
 708     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 709
 710   if (TREE_CODE (expr) == VAR_DECL)
 711     {
 712       tree dexpr = stream_read_tree (ib, data_in);
 713       if (dexpr)
 714         SET_DECL_DEBUG_EXPR (expr, dexpr);
 715     }
 716 }
 717
 718
 719 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 720    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 721    file being read.  */
 722
 723 static void
 724 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 725                                             struct data_in *data_in, tree expr)
 726 {
 727   if (TREE_CODE (expr) == TYPE_DECL)
 728     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 729 }
 730
 731
 732 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 733    from input block IB.  DATA_IN contains tables and descriptors for the
 734    file being read.  */
 735
 736 static void
 737 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 738                                           struct data_in *data_in, tree expr)
 739 {
 740   tree id;
 741
 742   id = stream_read_tree (ib, data_in);
 743   if (id)
 744     {
 745       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 746       SET_DECL_ASSEMBLER_NAME (expr, id);
 747     }
 748 }
 749
 750
 751 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 752    input block IB.  DATA_IN contains tables and descriptors for the
 753    file being read.  */
 754
 755 static void
 756 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 757                                        struct data_in *data_in, tree expr)
 758 {
 759   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 760   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 761   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 762   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 763   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 764 }
 765
 766
 767 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 768    from input block IB.  DATA_IN contains tables and descriptors for the
 769    file being read.  */
 770
 771 static void
 772 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 773                                           struct data_in *data_in, tree expr)
 774 {
 775   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 776   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 777   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 778   /* DECL_FUNCTION_SPECIFIC_TARGET is regenerated from attributes.  */
 779   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 780
 781   /* If the file contains a function with an EH personality set,
 782      then it was compiled with -fexceptions.  In that case, initialize
 783      the backend EH machinery.  */
 784   if (DECL_FUNCTION_PERSONALITY (expr))
 785     lto_init_eh ();
 786 }
 787
 788
 789 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 790    input block IB.  DATA_IN contains tables and descriptors for the file
 791    being read.  */
 792
 793 static void
 794 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 795                                         struct data_in *data_in, tree expr)
 796 {
 797   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 798   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 799   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 800   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 801   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 802      reconstructed during fixup.  */
 803   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 804      during fixup.  */
 805   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 806   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 807   /* TYPE_CANONICAL gets re-computed during type merging.  */
 808   TYPE_CANONICAL (expr) = NULL_TREE;
 809   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 810 }
 811
 812 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 813    from input block IB.  DATA_IN contains tables and descriptors for the
 814    file being read.  */
 815
 816 static void
 817 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 818                                             struct data_in *data_in,
 819                                             tree expr)
 820 {
 821   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 822     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 823   else if (TREE_CODE (expr) == ARRAY_TYPE)
 824     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 825   else if (RECORD_OR_UNION_TYPE_P (expr))
 826     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 827   else if (TREE_CODE (expr) == FUNCTION_TYPE
 828            || TREE_CODE (expr) == METHOD_TYPE)
 829     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 830
 831   if (!POINTER_TYPE_P (expr))
 832     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 833   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 834   if (RECORD_OR_UNION_TYPE_P (expr))
 835     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 836 }
 837
 838
 839 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 840    block IB.  DATA_IN contains tables and descriptors for the
 841    file being read.  */
 842
 843 static void
 844 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 845                                  struct data_in *data_in, tree expr)
 846 {
 847   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 848   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 849   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 850 }
 851
 852
 853 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 854    block IB.  DATA_IN contains tables and descriptors for the
 855    file being read.  */
 856
 857 static void
 858 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 859                                 struct data_in *data_in, tree expr)
 860 {
 861   int i;
 862
 863   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 864      instantiate EXPR.  */
 865   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 866     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 867 }
 868
 869
 870 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 871    block IB.  DATA_IN contains tables and descriptors for the
 872    file being read.  */
 873
 874
 875 static void
 876 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 877                                 struct data_in *data_in, tree expr)
 878 {
 879   int i;
 880
 881   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 882     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 883
 884   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 885 }
 886
 887
 888 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 889    block IB.  DATA_IN contains tables and descriptors for the
 890    file being read.  */
 891
 892 static void
 893 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 894                                   struct data_in *data_in, tree expr)
 895 {
 896   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 897
 898   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 899
 900   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 901      the limited cases we can handle - those that represent inlined
 902      function scopes.  For the rest them on the floor instead of ICEing in
 903      dwarf2out.c.  */
 904   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 905   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 906      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 907      dwarf2out.c.  */
 908
 909   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 910      streaming time.  */
 911
 912   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 913      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 914      stream the child relationship explicitly.  */
 915   if (BLOCK_SUPERCONTEXT (expr)
 916       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 917     {
 918       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 919       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 920     }
 921
 922   /* The global block is rooted at the TU decl.  Hook it here to
 923      avoid the need to stream in this block during WPA time.  */
 924   else if (BLOCK_SUPERCONTEXT (expr)
 925            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 926     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 927
 928   /* The function-level block is connected at the time we read in
 929      function bodies for the same reason.  */
 930 }
 931
 932
 933 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 934    block IB.  DATA_IN contains tables and descriptors for the
 935    file being read.  */
 936
 937 static void
 938 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 939                                   struct data_in *data_in, tree expr)
 940 {
 941   unsigned i;
 942   tree t;
 943
 944   /* Note that the number of slots in EXPR was read in
 945      streamer_alloc_tree when instantiating EXPR.  However, the
 946      vector is empty so we cannot rely on vec::length to know how many
 947      elements to read.  So, this list is emitted as a 0-terminated
 948      list on the writer side.  */
 949   do
 950     {
 951       t = stream_read_tree (ib, data_in);
 952       if (t)
 953         BINFO_BASE_BINFOS (expr)->quick_push (t);
 954     }
 955   while (t);
 956
 957   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 958   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 959   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 960
 961   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 962      unpacking the bitfield section.  */
 963   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 964     {
 965       tree a = stream_read_tree (ib, data_in);
 966       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 967     }
 968   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 969      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 970 }
 971
 972
 973 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 974    input block IB.  DATA_IN contains tables and descriptors for the
 975    file being read.  */
 976
 977 static void
 978 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 979                                         struct data_in *data_in, tree expr)
 980 {
 981   unsigned i;
 982
 983   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
 984     {
 985       constructor_elt e;
 986       e.index = stream_read_tree (ib, data_in);
 987       e.value = stream_read_tree (ib, data_in);
 988       (*CONSTRUCTOR_ELTS (expr))[i] = e;
 989     }
 990 }
 991
 992
 993 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
 994    input block IB.  DATA_IN contains tables and descriptors for the
 995    file being read.  */
 996
 997 static void
 998 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
 999                                        struct data_in *data_in, tree expr)
1000 {
1001   int i;
1002
1003   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1004     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1005   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1006 }
1007
1008
1009 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1010    contains tables and descriptors for the file being read.  */
1011
1012 void
1013 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1014                          tree expr)
1015 {
1016   enum tree_code code;
1017
1018   code = TREE_CODE (expr);
1019
1020   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1021     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1022
1023   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1024     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1025
1026   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1027     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1028
1029   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1030     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1031
1032   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1033     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1034
1035   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1036     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1037
1038   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1039     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1040
1041   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1042     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1043
1044   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1045     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1046
1047   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1048     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1049
1050   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1051     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1052
1053   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1054     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1057     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1060     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1063     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1066     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1069     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1070
1071   if (code == OMP_CLAUSE)
1072     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1073 }
1074
1075
1076 /* Read an index IX from input block IB and return the tree node at
1077    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1078
1079 tree
1080 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1081 {
1082   unsigned HOST_WIDE_INT ix;
1083   tree result;
1084   enum LTO_tags expected_tag;
1085
1086   ix = streamer_read_uhwi (ib);
1087   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1088
1089   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1090   gcc_assert (result
1091               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1092
1093   return result;
1094 }
1095
1096
1097 /* Read a code and class from input block IB and return the
1098    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1099
1100 tree
1101 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1102 {
1103   enum built_in_class fclass;
1104   enum built_in_function fcode;
1105   const char *asmname;
1106   tree result;
1107
1108   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1109   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1110
1111   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1112
1113   if (fclass == BUILT_IN_NORMAL)
1114     {
1115       if (fcode >= END_BUILTINS)
1116         fatal_error ("machine independent builtin code out of range");
1117       result = builtin_decl_explicit (fcode);
1118       gcc_assert (result);
1119     }
1120   else if (fclass == BUILT_IN_MD)
1121     {
1122       result = targetm.builtin_decl (fcode, true);
1123       if (!result || result == error_mark_node)
1124         fatal_error ("target specific builtin not available");
1125     }
1126   else
1127     gcc_unreachable ();
1128
1129   asmname = streamer_read_string (data_in, ib);
1130   if (asmname)
1131     set_builtin_user_assembler_name (result, asmname);
1132
1133   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1134
1135   return result;
1136 }