gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2015 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 "hash-set.h"
  27 #include "machmode.h"
  28 #include "vec.h"
  29 #include "double-int.h"
  30 #include "input.h"
  31 #include "alias.h"
  32 #include "symtab.h"
  33 #include "options.h"
  34 #include "wide-int.h"
  35 #include "inchash.h"
  36 #include "real.h"
  37 #include "fixed-value.h"
  38 #include "tree.h"
  39 #include "fold-const.h"
  40 #include "stringpool.h"
  41 #include "predict.h"
  42 #include "tm.h"
  43 #include "hard-reg-set.h"
  44 #include "input.h"
  45 #include "function.h"
  46 #include "basic-block.h"
  47 #include "tree-ssa-alias.h"
  48 #include "internal-fn.h"
  49 #include "gimple-expr.h"
  50 #include "is-a.h"
  51 #include "gimple.h"
  52 #include "hash-map.h"
  53 #include "plugin-api.h"
  54 #include "ipa-ref.h"
  55 #include "cgraph.h"
  56 #include "tree-streamer.h"
  57 #include "data-streamer.h"
  58 #include "streamer-hooks.h"
  59 #include "lto-streamer.h"
  60 #include "builtins.h"
  61 #include "ipa-chkp.h"
  62 #include "gomp-constants.h"
  63
  64
  65 /* Read a STRING_CST from the string table in DATA_IN using input
  66    block IB.  */
  67
  68 tree
  69 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  70 {
  71   unsigned int len;
  72   const char * ptr;
  73
  74   ptr = streamer_read_indexed_string (data_in, ib, &len);
  75   if (!ptr)
  76     return NULL;
  77   return build_string (len, ptr);
  78 }
  79
  80
  81 /* Read an IDENTIFIER from the string table in DATA_IN using input
  82    block IB.  */
  83
  84 static tree
  85 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  86 {
  87   unsigned int len;
  88   const char *ptr;
  89
  90   ptr = streamer_read_indexed_string (data_in, ib, &len);
  91   if (!ptr)
  92     return NULL;
  93   return get_identifier_with_length (ptr, len);
  94 }
  95
  96
  97 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  98    tables and descriptors for the file being read.  */
  99
 100 tree
 101 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
 102 {
 103   tree first, prev, curr;
 104
 105   /* The chain is written as NULL terminated list of trees.  */
 106   first = prev = NULL_TREE;
 107   do
 108     {
 109       curr = stream_read_tree (ib, data_in);
 110       if (prev)
 111         TREE_CHAIN (prev) = curr;
 112       else
 113         first = curr;
 114
 115       prev = curr;
 116     }
 117   while (curr);
 118
 119   return first;
 120 }
 121
 122
 123 /* Unpack all the non-pointer fields of the TS_BASE structure of
 124    expression EXPR from bitpack BP.  */
 125
 126 static void
 127 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 128 {
 129   /* Note that the code for EXPR has already been unpacked to create EXPR in
 130      streamer_alloc_tree.  */
 131   if (!TYPE_P (expr))
 132     {
 133       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 134       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 135       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 136
 137       /* TREE_PUBLIC is used on types to indicate that the type
 138          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 139          so we skip it here.  */
 140       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 141     }
 142   else
 143     bp_unpack_value (bp, 4);
 144   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 145   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 146   if (DECL_P (expr))
 147     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 148   else if (TYPE_P (expr))
 149     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 150   else
 151     bp_unpack_value (bp, 1);
 152   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 153   if (TYPE_P (expr))
 154     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 155   else
 156     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 157   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 158   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 159   if (TREE_CODE (expr) != TREE_BINFO)
 160     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 161   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 162   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 163   if (TYPE_P (expr))
 164     {
 165       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 166       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 167     }
 168   else if (TREE_CODE (expr) == SSA_NAME)
 169     SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 170   else
 171     bp_unpack_value (bp, 1);
 172 }
 173
 174
 175 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 176    expression EXPR from bitpack BP.  */
 177
 178 static void
 179 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 180 {
 181   int i;
 182   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 183     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 184 }
 185
 186
 187 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 188    expression EXPR from bitpack BP.  */
 189
 190 static void
 191 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 192 {
 193   unsigned i;
 194   REAL_VALUE_TYPE r;
 195   REAL_VALUE_TYPE *rp;
 196
 197   /* Clear all bits of the real value type so that we can later do
 198      bitwise comparisons to see if two values are the same.  */
 199   memset (&r, 0, sizeof r);
 200   r.cl = (unsigned) bp_unpack_value (bp, 2);
 201   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 202   r.sign = (unsigned) bp_unpack_value (bp, 1);
 203   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 204   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 205   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 206   for (i = 0; i < SIGSZ; i++)
 207     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 208
 209   rp = ggc_alloc<real_value> ();
 210   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 211   TREE_REAL_CST_PTR (expr) = rp;
 212 }
 213
 214
 215 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 216    expression EXPR from bitpack BP.  */
 217
 218 static void
 219 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 220 {
 221   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 222   fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 223   fp->data.low = bp_unpack_var_len_int (bp);
 224   fp->data.high = bp_unpack_var_len_int (bp);
 225   TREE_FIXED_CST_PTR (expr) = fp;
 226 }
 227
 228 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 229    of expression EXPR from bitpack BP.  */
 230
 231 static void
 232 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 233 {
 234   DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 235   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 236   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 237   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 238   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 239   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 240   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 241   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 242   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 243   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 244   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 245
 246   if (TREE_CODE (expr) == LABEL_DECL)
 247     {
 248       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 249
 250       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 251          force gimple_set_bb to recreate label_to_block_map.  */
 252       LABEL_DECL_UID (expr) = -1;
 253     }
 254
 255   if (TREE_CODE (expr) == FIELD_DECL)
 256     {
 257       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 258       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 259       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 260     }
 261
 262   if (TREE_CODE (expr) == VAR_DECL)
 263     {
 264       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 265       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 266     }
 267
 268   if (TREE_CODE (expr) == RESULT_DECL
 269       || TREE_CODE (expr) == PARM_DECL
 270       || TREE_CODE (expr) == VAR_DECL)
 271     {
 272       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 273       if (TREE_CODE (expr) == VAR_DECL
 274           || TREE_CODE (expr) == PARM_DECL)
 275         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 276     }
 277 }
 278
 279
 280 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 281    of expression EXPR from bitpack BP.  */
 282
 283 static void
 284 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 285 {
 286   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 287 }
 288
 289
 290 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 291    of expression EXPR from bitpack BP.  */
 292
 293 static void
 294 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 295 {
 296   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 297   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 298   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 299   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 300   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 301   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 302   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 303
 304   if (TREE_CODE (expr) == VAR_DECL)
 305     {
 306       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 307       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 308     }
 309
 310   if (TREE_CODE (expr) == FUNCTION_DECL)
 311     {
 312       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 313       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 314       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 315     }
 316 }
 317
 318
 319 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 320    of expression EXPR from bitpack BP.  */
 321
 322 static void
 323 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 324 {
 325   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 326                                                BUILT_IN_LAST);
 327   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 339                         = (unsigned) bp_unpack_value (bp, 1);
 340   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 341   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 342   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 343   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 344   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 345     {
 346       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 347                                                                             12);
 348       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 349           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 350         fatal_error (input_location,
 351                      "machine independent builtin code out of range");
 352       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 353         {
 354           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 355           if (!result || result == error_mark_node)
 356             fatal_error (input_location,
 357                          "target specific builtin not available");
 358         }
 359     }
 360 }
 361
 362
 363 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 364    of expression EXPR from bitpack BP.  */
 365
 366 static void
 367 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 368 {
 369   machine_mode mode;
 370
 371   mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 372   SET_TYPE_MODE (expr, mode);
 373   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 374   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 375   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 376   if (RECORD_OR_UNION_TYPE_P (expr))
 377     {
 378       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 379       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 380     }
 381   else if (TREE_CODE (expr) == ARRAY_TYPE)
 382     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 383   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 384   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 385   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 386   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 387   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 388   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 389   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 390 }
 391
 392
 393 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 394    of expression EXPR from bitpack BP.  */
 395
 396 static void
 397 unpack_ts_block_value_fields (struct data_in *data_in,
 398                               struct bitpack_d *bp, tree expr)
 399 {
 400   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 401   /* BLOCK_NUMBER is recomputed.  */
 402   BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 403 }
 404
 405 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 406    structure of expression EXPR from bitpack BP.  */
 407
 408 static void
 409 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 410                                               struct bitpack_d *bp, tree expr)
 411 {
 412   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 413   vec_safe_push (all_translation_units, expr);
 414 }
 415
 416
 417 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 418    structure of expression EXPR from bitpack BP.  */
 419
 420 static void
 421 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 422                                    struct bitpack_d *bp, tree expr)
 423 {
 424   OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in);
 425   switch (OMP_CLAUSE_CODE (expr))
 426     {
 427     case OMP_CLAUSE_DEFAULT:
 428       OMP_CLAUSE_DEFAULT_KIND (expr)
 429         = bp_unpack_enum (bp, omp_clause_default_kind,
 430                           OMP_CLAUSE_DEFAULT_LAST);
 431       break;
 432     case OMP_CLAUSE_SCHEDULE:
 433       OMP_CLAUSE_SCHEDULE_KIND (expr)
 434         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 435                           OMP_CLAUSE_SCHEDULE_LAST);
 436       break;
 437     case OMP_CLAUSE_DEPEND:
 438       OMP_CLAUSE_DEPEND_KIND (expr)
 439         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 440       break;
 441     case OMP_CLAUSE_MAP:
 442       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 443                                                      GOMP_MAP_LAST));
 444       break;
 445     case OMP_CLAUSE_PROC_BIND:
 446       OMP_CLAUSE_PROC_BIND_KIND (expr)
 447         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 448                           OMP_CLAUSE_PROC_BIND_LAST);
 449       break;
 450     case OMP_CLAUSE_REDUCTION:
 451       OMP_CLAUSE_REDUCTION_CODE (expr)
 452         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 453       break;
 454     default:
 455       break;
 456     }
 457 }
 458
 459 /* Unpack all the non-pointer fields in EXPR into a bit pack.  */
 460
 461 static void
 462 unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
 463 {
 464   enum tree_code code;
 465
 466   code = TREE_CODE (expr);
 467
 468   /* Note that all these functions are highly sensitive to changes in
 469      the types and sizes of each of the fields being packed.  */
 470   unpack_ts_base_value_fields (bp, expr);
 471
 472   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 473     unpack_ts_int_cst_value_fields (bp, expr);
 474
 475   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 476     unpack_ts_real_cst_value_fields (bp, expr);
 477
 478   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 479     unpack_ts_fixed_cst_value_fields (bp, expr);
 480
 481   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 482     DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 483
 484   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 485     unpack_ts_decl_common_value_fields (bp, expr);
 486
 487   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 488     unpack_ts_decl_wrtl_value_fields (bp, expr);
 489
 490   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 491     unpack_ts_decl_with_vis_value_fields (bp, expr);
 492
 493   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 494     unpack_ts_function_decl_value_fields (bp, expr);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 497     unpack_ts_type_common_value_fields (bp, expr);
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 500     {
 501       SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
 502       if (code == MEM_REF
 503           || code == TARGET_MEM_REF)
 504         {
 505           MR_DEPENDENCE_CLIQUE (expr)
 506             = (unsigned)bp_unpack_value (bp, sizeof (short) * 8);
 507           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 508             MR_DEPENDENCE_BASE (expr)
 509               = (unsigned)bp_unpack_value (bp, sizeof (short) * 8);
 510         }
 511     }
 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_OPTIMIZATION))
 520     cl_optimization_stream_in (bp, TREE_OPTIMIZATION (expr));
 521
 522   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 523     {
 524       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 525       if (length > 0)
 526         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 527     }
 528
 529   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 530     {
 531       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 532       if (length > 0)
 533         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 534     }
 535
 536 #ifndef ACCEL_COMPILER
 537   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 538     cl_target_option_stream_in (data_in, bp, TREE_TARGET_OPTION (expr));
 539 #endif
 540
 541   if (code == OMP_CLAUSE)
 542     unpack_ts_omp_clause_value_fields (data_in, bp, expr);
 543 }
 544
 545
 546 /* Read all the language-independent bitfield values for EXPR from IB.
 547    Return the partially unpacked bitpack so the caller can unpack any other
 548    bitfield values that the writer may have written.  */
 549
 550 struct bitpack_d
 551 streamer_read_tree_bitfields (struct lto_input_block *ib,
 552                               struct data_in *data_in, tree expr)
 553 {
 554   enum tree_code code;
 555   struct bitpack_d bp;
 556
 557   /* Read the bitpack of non-pointer values from IB.  */
 558   bp = streamer_read_bitpack (ib);
 559
 560   /* The first word in BP contains the code of the tree that we
 561      are about to read.  */
 562   code = (enum tree_code) bp_unpack_value (&bp, 16);
 563   lto_tag_check (lto_tree_code_to_tag (code),
 564                  lto_tree_code_to_tag (TREE_CODE (expr)));
 565
 566   /* Unpack all the value fields from BP.  */
 567   unpack_value_fields (data_in, &bp, expr);
 568
 569   return bp;
 570 }
 571
 572
 573 /* Materialize a new tree from input block IB using descriptors in
 574    DATA_IN.  The code for the new tree should match TAG.  Store in
 575    *IX_P the index into the reader cache where the new tree is stored.  */
 576
 577 tree
 578 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 579                      enum LTO_tags tag)
 580 {
 581   enum tree_code code;
 582   tree result;
 583 #ifdef LTO_STREAMER_DEBUG
 584   HOST_WIDE_INT orig_address_in_writer;
 585 #endif
 586
 587   result = NULL_TREE;
 588
 589 #ifdef LTO_STREAMER_DEBUG
 590   /* Read the word representing the memory address for the tree
 591      as it was written by the writer.  This is useful when
 592      debugging differences between the writer and reader.  */
 593   orig_address_in_writer = streamer_read_hwi (ib);
 594   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 595 #endif
 596
 597   code = lto_tag_to_tree_code (tag);
 598
 599   /* We should never see an SSA_NAME tree.  Only the version numbers of
 600      SSA names are ever written out.  See input_ssa_names.  */
 601   gcc_assert (code != SSA_NAME);
 602
 603   /* Instantiate a new tree using the header data.  */
 604   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 605     result = streamer_read_string_cst (data_in, ib);
 606   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 607     result = input_identifier (data_in, ib);
 608   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 609     {
 610       HOST_WIDE_INT len = streamer_read_hwi (ib);
 611       result = make_tree_vec (len);
 612     }
 613   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 614     {
 615       HOST_WIDE_INT len = streamer_read_hwi (ib);
 616       result = make_vector (len);
 617     }
 618   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 619     {
 620       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 621       result = make_tree_binfo (len);
 622     }
 623   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 624     {
 625       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 626       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 627       result = make_int_cst (len, ext_len);
 628     }
 629   else if (code == CALL_EXPR)
 630     {
 631       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 632       return build_vl_exp (CALL_EXPR, nargs + 3);
 633     }
 634   else if (code == OMP_CLAUSE)
 635     {
 636       enum omp_clause_code subcode
 637         = (enum omp_clause_code) streamer_read_uhwi (ib);
 638       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 639     }
 640   else
 641     {
 642       /* For all other nodes, materialize the tree with a raw
 643          make_node call.  */
 644       result = make_node (code);
 645     }
 646
 647 #ifdef LTO_STREAMER_DEBUG
 648   /* Store the original address of the tree as seen by the writer
 649      in RESULT's aux field.  This is useful when debugging streaming
 650      problems.  This way, a debugging session can be started on
 651      both writer and reader with a breakpoint using this address
 652      value in both.  */
 653   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 654 #endif
 655
 656   return result;
 657 }
 658
 659
 660 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 661    block IB.  DATA_IN contains tables and descriptors for the
 662    file being read.  */
 663
 664
 665 static void
 666 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 667                                    struct data_in *data_in, tree expr)
 668 {
 669   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 670     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 671 }
 672
 673
 674 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 675    block IB.  DATA_IN contains tables and descriptors for the
 676    file being read.  */
 677
 678 static void
 679 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 680                                    struct data_in *data_in, tree expr)
 681 {
 682   unsigned i;
 683   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 684     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 685 }
 686
 687
 688 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 689    block IB.  DATA_IN contains tables and descriptors for the
 690    file being read.  */
 691
 692 static void
 693 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 694                                     struct data_in *data_in, tree expr)
 695 {
 696   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 697   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 698 }
 699
 700
 701 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 702    from input block IB.  DATA_IN contains tables and descriptors for the
 703    file being read.  */
 704
 705 static void
 706 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 707                                          struct data_in *data_in, tree expr)
 708 {
 709   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 710   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 711 }
 712
 713
 714 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 715    input block IB.  DATA_IN contains tables and descriptors for the
 716    file being read.  */
 717
 718 static void
 719 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 720                                         struct data_in *data_in, tree expr)
 721 {
 722   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 723   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 724   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 725
 726   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 727      for early inlining so drop it on the floor instead of ICEing in
 728      dwarf2out.c.  */
 729
 730   if ((TREE_CODE (expr) == VAR_DECL
 731        || TREE_CODE (expr) == PARM_DECL)
 732       && DECL_HAS_VALUE_EXPR_P (expr))
 733     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 734
 735   if (TREE_CODE (expr) == VAR_DECL)
 736     {
 737       tree dexpr = stream_read_tree (ib, data_in);
 738       if (dexpr)
 739         SET_DECL_DEBUG_EXPR (expr, dexpr);
 740     }
 741 }
 742
 743
 744 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 745    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 746    file being read.  */
 747
 748 static void
 749 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 750                                             struct data_in *data_in, tree expr)
 751 {
 752   if (TREE_CODE (expr) == TYPE_DECL)
 753     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 754 }
 755
 756
 757 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 758    from input block IB.  DATA_IN contains tables and descriptors for the
 759    file being read.  */
 760
 761 static void
 762 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 763                                           struct data_in *data_in, tree expr)
 764 {
 765   tree id;
 766
 767   id = stream_read_tree (ib, data_in);
 768   if (id)
 769     {
 770       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 771       SET_DECL_ASSEMBLER_NAME (expr, id);
 772     }
 773 }
 774
 775
 776 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 777    input block IB.  DATA_IN contains tables and descriptors for the
 778    file being read.  */
 779
 780 static void
 781 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 782                                        struct data_in *data_in, tree expr)
 783 {
 784   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 785   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 786   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 787   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 788   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 789 }
 790
 791
 792 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 793    from input block IB.  DATA_IN contains tables and descriptors for the
 794    file being read.  */
 795
 796 static void
 797 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 798                                           struct data_in *data_in, tree expr)
 799 {
 800   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 801   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 802   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 803 #ifndef ACCEL_COMPILER
 804   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 805 #endif
 806   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 807
 808   /* If the file contains a function with an EH personality set,
 809      then it was compiled with -fexceptions.  In that case, initialize
 810      the backend EH machinery.  */
 811   if (DECL_FUNCTION_PERSONALITY (expr))
 812     lto_init_eh ();
 813 }
 814
 815
 816 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 817    input block IB.  DATA_IN contains tables and descriptors for the file
 818    being read.  */
 819
 820 static void
 821 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 822                                         struct data_in *data_in, tree expr)
 823 {
 824   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 825   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 826   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 827   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 828   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 829      reconstructed during fixup.  */
 830   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 831      during fixup.  */
 832   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 833   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 834   /* TYPE_CANONICAL gets re-computed during type merging.  */
 835   TYPE_CANONICAL (expr) = NULL_TREE;
 836   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 837 }
 838
 839 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 840    from input block IB.  DATA_IN contains tables and descriptors for the
 841    file being read.  */
 842
 843 static void
 844 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 845                                             struct data_in *data_in,
 846                                             tree expr)
 847 {
 848   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 849     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 850   else if (TREE_CODE (expr) == ARRAY_TYPE)
 851     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 852   else if (RECORD_OR_UNION_TYPE_P (expr))
 853     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 854   else if (TREE_CODE (expr) == FUNCTION_TYPE
 855            || TREE_CODE (expr) == METHOD_TYPE)
 856     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 857
 858   if (!POINTER_TYPE_P (expr))
 859     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 860   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 861   if (RECORD_OR_UNION_TYPE_P (expr))
 862     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 863 }
 864
 865
 866 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 867    block IB.  DATA_IN contains tables and descriptors for the
 868    file being read.  */
 869
 870 static void
 871 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 872                                  struct data_in *data_in, tree expr)
 873 {
 874   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 875   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 876   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 877 }
 878
 879
 880 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 881    block IB.  DATA_IN contains tables and descriptors for the
 882    file being read.  */
 883
 884 static void
 885 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 886                                 struct data_in *data_in, tree expr)
 887 {
 888   int i;
 889
 890   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 891      instantiate EXPR.  */
 892   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 893     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 894 }
 895
 896
 897 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 898    block IB.  DATA_IN contains tables and descriptors for the
 899    file being read.  */
 900
 901
 902 static void
 903 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 904                                 struct data_in *data_in, tree expr)
 905 {
 906   int i;
 907
 908   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 909     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 910
 911   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 912 }
 913
 914
 915 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 916    block IB.  DATA_IN contains tables and descriptors for the
 917    file being read.  */
 918
 919 static void
 920 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 921                                   struct data_in *data_in, tree expr)
 922 {
 923   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 924
 925   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 926
 927   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 928      the limited cases we can handle - those that represent inlined
 929      function scopes.  For the rest them on the floor instead of ICEing in
 930      dwarf2out.c.  */
 931   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 932   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 933      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 934      dwarf2out.c.  */
 935
 936   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 937      streaming time.  */
 938
 939   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 940      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 941      stream the child relationship explicitly.  */
 942   if (BLOCK_SUPERCONTEXT (expr)
 943       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 944     {
 945       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 946       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 947     }
 948
 949   /* The global block is rooted at the TU decl.  Hook it here to
 950      avoid the need to stream in this block during WPA time.  */
 951   else if (BLOCK_SUPERCONTEXT (expr)
 952            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 953     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 954
 955   /* The function-level block is connected at the time we read in
 956      function bodies for the same reason.  */
 957 }
 958
 959
 960 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 961    block IB.  DATA_IN contains tables and descriptors for the
 962    file being read.  */
 963
 964 static void
 965 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 966                                   struct data_in *data_in, tree expr)
 967 {
 968   unsigned i;
 969   tree t;
 970
 971   /* Note that the number of slots in EXPR was read in
 972      streamer_alloc_tree when instantiating EXPR.  However, the
 973      vector is empty so we cannot rely on vec::length to know how many
 974      elements to read.  So, this list is emitted as a 0-terminated
 975      list on the writer side.  */
 976   do
 977     {
 978       t = stream_read_tree (ib, data_in);
 979       if (t)
 980         BINFO_BASE_BINFOS (expr)->quick_push (t);
 981     }
 982   while (t);
 983
 984   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 985   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 986   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 987
 988   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 989      unpacking the bitfield section.  */
 990   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 991     {
 992       tree a = stream_read_tree (ib, data_in);
 993       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 994     }
 995   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 996      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 997 }
 998
 999
1000 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1001    input block IB.  DATA_IN contains tables and descriptors for the
1002    file being read.  */
1003
1004 static void
1005 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1006                                         struct data_in *data_in, tree expr)
1007 {
1008   unsigned i;
1009
1010   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1011     {
1012       constructor_elt e;
1013       e.index = stream_read_tree (ib, data_in);
1014       e.value = stream_read_tree (ib, data_in);
1015       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1016     }
1017 }
1018
1019
1020 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1021    input block IB.  DATA_IN contains tables and descriptors for the
1022    file being read.  */
1023
1024 static void
1025 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1026                                        struct data_in *data_in, tree expr)
1027 {
1028   int i;
1029
1030   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1031     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1032   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1033 }
1034
1035
1036 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1037    contains tables and descriptors for the file being read.  */
1038
1039 void
1040 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1041                          tree expr)
1042 {
1043   enum tree_code code;
1044
1045   code = TREE_CODE (expr);
1046
1047   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1048     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1049
1050   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1051     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1052
1053   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1054     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1057     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1060     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1063     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1066     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1069     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1072     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1075     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1078     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1079
1080   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1081     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1082
1083   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1084     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1085
1086   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1087     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1088
1089   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1090     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1091
1092   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1093     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1094
1095   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1096     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1097
1098   if (code == OMP_CLAUSE)
1099     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1100 }
1101
1102
1103 /* Read an index IX from input block IB and return the tree node at
1104    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1105
1106 tree
1107 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1108 {
1109   unsigned HOST_WIDE_INT ix;
1110   tree result;
1111   enum LTO_tags expected_tag;
1112
1113   ix = streamer_read_uhwi (ib);
1114   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1115
1116   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1117   gcc_assert (result
1118               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1119
1120   return result;
1121 }
1122
1123
1124 /* Read a code and class from input block IB and return the
1125    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1126
1127 tree
1128 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1129 {
1130   enum built_in_class fclass;
1131   enum built_in_function fcode;
1132   const char *asmname;
1133   tree result;
1134
1135   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1136   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1137
1138   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1139
1140   if (fclass == BUILT_IN_NORMAL)
1141     {
1142       if (fcode >= END_BUILTINS)
1143         fatal_error (input_location,
1144                      "machine independent builtin code out of range");
1145       result = builtin_decl_explicit (fcode);
1146       if (!result
1147           && fcode > BEGIN_CHKP_BUILTINS
1148           && fcode < END_CHKP_BUILTINS)
1149         {
1150           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1151           result = builtin_decl_explicit (fcode);
1152           result = chkp_maybe_clone_builtin_fndecl (result);
1153         }
1154       gcc_assert (result);
1155     }
1156   else if (fclass == BUILT_IN_MD)
1157     {
1158       result = targetm.builtin_decl (fcode, true);
1159       if (!result || result == error_mark_node)
1160         fatal_error (input_location, "target specific builtin not available");
1161     }
1162   else
1163     gcc_unreachable ();
1164
1165   asmname = streamer_read_string (data_in, ib);
1166   if (asmname)
1167     set_builtin_user_assembler_name (result, asmname);
1168
1169   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1170
1171   return result;
1172 }