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 "predict.h"
  29 #include "vec.h"
  30 #include "hashtab.h"
  31 #include "hash-set.h"
  32 #include "machmode.h"
  33 #include "tm.h"
  34 #include "hard-reg-set.h"
  35 #include "input.h"
  36 #include "function.h"
  37 #include "basic-block.h"
  38 #include "tree-ssa-alias.h"
  39 #include "internal-fn.h"
  40 #include "gimple-expr.h"
  41 #include "is-a.h"
  42 #include "gimple.h"
  43 #include "hash-map.h"
  44 #include "plugin-api.h"
  45 #include "ipa-ref.h"
  46 #include "cgraph.h"
  47 #include "tree-streamer.h"
  48 #include "data-streamer.h"
  49 #include "streamer-hooks.h"
  50 #include "lto-streamer.h"
  51 #include "builtins.h"
  52 #include "ipa-chkp.h"
  53
  54 /* Read a STRING_CST from the string table in DATA_IN using input
  55    block IB.  */
  56
  57 tree
  58 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  59 {
  60   unsigned int len;
  61   const char * ptr;
  62
  63   ptr = streamer_read_indexed_string (data_in, ib, &len);
  64   if (!ptr)
  65     return NULL;
  66   return build_string (len, ptr);
  67 }
  68
  69
  70 /* Read an IDENTIFIER from the string table in DATA_IN using input
  71    block IB.  */
  72
  73 static tree
  74 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  75 {
  76   unsigned int len;
  77   const char *ptr;
  78
  79   ptr = streamer_read_indexed_string (data_in, ib, &len);
  80   if (!ptr)
  81     return NULL;
  82   return get_identifier_with_length (ptr, len);
  83 }
  84
  85
  86 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  87    tables and descriptors for the file being read.  */
  88
  89 tree
  90 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  91 {
  92   tree first, prev, curr;
  93
  94   /* The chain is written as NULL terminated list of trees.  */
  95   first = prev = NULL_TREE;
  96   do
  97     {
  98       curr = stream_read_tree (ib, data_in);
  99       if (prev)
 100         TREE_CHAIN (prev) = curr;
 101       else
 102         first = curr;
 103
 104       prev = curr;
 105     }
 106   while (curr);
 107
 108   return first;
 109 }
 110
 111
 112 /* Unpack all the non-pointer fields of the TS_BASE structure of
 113    expression EXPR from bitpack BP.  */
 114
 115 static void
 116 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 117 {
 118   /* Note that the code for EXPR has already been unpacked to create EXPR in
 119      streamer_alloc_tree.  */
 120   if (!TYPE_P (expr))
 121     {
 122       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 123       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 124       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 125
 126       /* TREE_PUBLIC is used on types to indicate that the type
 127          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 128          so we skip it here.  */
 129       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 130     }
 131   else
 132     bp_unpack_value (bp, 4);
 133   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 134   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 135   if (DECL_P (expr))
 136     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   else if (TYPE_P (expr))
 138     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 139   else
 140     bp_unpack_value (bp, 1);
 141   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 142   if (TYPE_P (expr))
 143     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 144   else
 145     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 146   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 147   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 148   if (TREE_CODE (expr) != TREE_BINFO)
 149     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 150   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 151   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 152   if (TYPE_P (expr))
 153     {
 154       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 155       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 156     }
 157   else if (TREE_CODE (expr) == SSA_NAME)
 158     SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 159   else
 160     bp_unpack_value (bp, 1);
 161 }
 162
 163
 164 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 165    expression EXPR from bitpack BP.  */
 166
 167 static void
 168 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 169 {
 170   int i;
 171   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 172     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 173 }
 174
 175
 176 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 177    expression EXPR from bitpack BP.  */
 178
 179 static void
 180 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 181 {
 182   unsigned i;
 183   REAL_VALUE_TYPE r;
 184   REAL_VALUE_TYPE *rp;
 185
 186   /* Clear all bits of the real value type so that we can later do
 187      bitwise comparisons to see if two values are the same.  */
 188   memset (&r, 0, sizeof r);
 189   r.cl = (unsigned) bp_unpack_value (bp, 2);
 190   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 191   r.sign = (unsigned) bp_unpack_value (bp, 1);
 192   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 193   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 194   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 195   for (i = 0; i < SIGSZ; i++)
 196     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 197
 198   rp = ggc_alloc<real_value> ();
 199   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 200   TREE_REAL_CST_PTR (expr) = rp;
 201 }
 202
 203
 204 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 205    expression EXPR from bitpack BP.  */
 206
 207 static void
 208 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 209 {
 210   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 211   fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 212   fp->data.low = bp_unpack_var_len_int (bp);
 213   fp->data.high = bp_unpack_var_len_int (bp);
 214   TREE_FIXED_CST_PTR (expr) = fp;
 215 }
 216
 217 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 218    of expression EXPR from bitpack BP.  */
 219
 220 static void
 221 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 222 {
 223   DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 224   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 225   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 226   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 227   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 228   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 229   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 230   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 231   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 232   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 233   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 234
 235   if (TREE_CODE (expr) == LABEL_DECL)
 236     {
 237       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 238
 239       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 240          force gimple_set_bb to recreate label_to_block_map.  */
 241       LABEL_DECL_UID (expr) = -1;
 242     }
 243
 244   if (TREE_CODE (expr) == FIELD_DECL)
 245     {
 246       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 247       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 248       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 249     }
 250
 251   if (TREE_CODE (expr) == VAR_DECL)
 252     {
 253       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 254       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 255     }
 256
 257   if (TREE_CODE (expr) == RESULT_DECL
 258       || TREE_CODE (expr) == PARM_DECL
 259       || TREE_CODE (expr) == VAR_DECL)
 260     {
 261       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 262       if (TREE_CODE (expr) == VAR_DECL
 263           || TREE_CODE (expr) == PARM_DECL)
 264         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 265     }
 266 }
 267
 268
 269 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 270    of expression EXPR from bitpack BP.  */
 271
 272 static void
 273 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 274 {
 275   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 276 }
 277
 278
 279 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 280    of expression EXPR from bitpack BP.  */
 281
 282 static void
 283 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 284 {
 285   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 286   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 287   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 288   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 289   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 290   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 291   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 292
 293   if (TREE_CODE (expr) == VAR_DECL)
 294     {
 295       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 296       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 297     }
 298
 299   if (TREE_CODE (expr) == FUNCTION_DECL)
 300     {
 301       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 302       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 303       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 304     }
 305 }
 306
 307
 308 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 309    of expression EXPR from bitpack BP.  */
 310
 311 static void
 312 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 313 {
 314   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 315                                                BUILT_IN_LAST);
 316   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 317   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 318   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 319   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 325   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 328                         = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 334     {
 335       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 336                                                                             12);
 337       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 338           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 339         fatal_error ("machine independent builtin code out of range");
 340       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 341         {
 342           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 343           if (!result || result == error_mark_node)
 344             fatal_error ("target specific builtin not available");
 345         }
 346     }
 347 }
 348
 349
 350 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 351    of expression EXPR from bitpack BP.  */
 352
 353 static void
 354 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 355 {
 356   machine_mode mode;
 357
 358   mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 359   SET_TYPE_MODE (expr, mode);
 360   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 361   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 362   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 363   if (RECORD_OR_UNION_TYPE_P (expr))
 364     {
 365       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 366       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 367     }
 368   else if (TREE_CODE (expr) == ARRAY_TYPE)
 369     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 370   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 371   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 372   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 373   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 374   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 375   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 376   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 377 }
 378
 379
 380 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 381    of expression EXPR from bitpack BP.  */
 382
 383 static void
 384 unpack_ts_block_value_fields (struct data_in *data_in,
 385                               struct bitpack_d *bp, tree expr)
 386 {
 387   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 388   /* BLOCK_NUMBER is recomputed.  */
 389   BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 390 }
 391
 392 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 393    structure of expression EXPR from bitpack BP.  */
 394
 395 static void
 396 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 397                                               struct bitpack_d *bp, tree expr)
 398 {
 399   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 400   vec_safe_push (all_translation_units, expr);
 401 }
 402
 403
 404 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 405    structure of expression EXPR from bitpack BP.  */
 406
 407 static void
 408 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 409                                    struct bitpack_d *bp, tree expr)
 410 {
 411   OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in);
 412   switch (OMP_CLAUSE_CODE (expr))
 413     {
 414     case OMP_CLAUSE_DEFAULT:
 415       OMP_CLAUSE_DEFAULT_KIND (expr)
 416         = bp_unpack_enum (bp, omp_clause_default_kind,
 417                           OMP_CLAUSE_DEFAULT_LAST);
 418       break;
 419     case OMP_CLAUSE_SCHEDULE:
 420       OMP_CLAUSE_SCHEDULE_KIND (expr)
 421         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 422                           OMP_CLAUSE_SCHEDULE_LAST);
 423       break;
 424     case OMP_CLAUSE_DEPEND:
 425       OMP_CLAUSE_DEPEND_KIND (expr)
 426         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 427       break;
 428     case OMP_CLAUSE_MAP:
 429       OMP_CLAUSE_MAP_KIND (expr)
 430         = bp_unpack_enum (bp, omp_clause_map_kind, OMP_CLAUSE_MAP_LAST);
 431       break;
 432     case OMP_CLAUSE_PROC_BIND:
 433       OMP_CLAUSE_PROC_BIND_KIND (expr)
 434         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 435                           OMP_CLAUSE_PROC_BIND_LAST);
 436       break;
 437     case OMP_CLAUSE_REDUCTION:
 438       OMP_CLAUSE_REDUCTION_CODE (expr)
 439         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 440       break;
 441     default:
 442       break;
 443     }
 444 }
 445
 446 /* Unpack all the non-pointer fields in EXPR into a bit pack.  */
 447
 448 static void
 449 unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
 450 {
 451   enum tree_code code;
 452
 453   code = TREE_CODE (expr);
 454
 455   /* Note that all these functions are highly sensitive to changes in
 456      the types and sizes of each of the fields being packed.  */
 457   unpack_ts_base_value_fields (bp, expr);
 458
 459   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 460     unpack_ts_int_cst_value_fields (bp, expr);
 461
 462   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 463     unpack_ts_real_cst_value_fields (bp, expr);
 464
 465   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 466     unpack_ts_fixed_cst_value_fields (bp, expr);
 467
 468   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 469     DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 470
 471   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 472     unpack_ts_decl_common_value_fields (bp, expr);
 473
 474   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 475     unpack_ts_decl_wrtl_value_fields (bp, expr);
 476
 477   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 478     unpack_ts_decl_with_vis_value_fields (bp, expr);
 479
 480   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 481     unpack_ts_function_decl_value_fields (bp, expr);
 482
 483   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 484     unpack_ts_type_common_value_fields (bp, expr);
 485
 486   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 487     {
 488       SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
 489       if (code == MEM_REF
 490           || code == TARGET_MEM_REF)
 491         {
 492           MR_DEPENDENCE_CLIQUE (expr)
 493             = (unsigned)bp_unpack_value (bp, sizeof (short) * 8);
 494           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 495             MR_DEPENDENCE_BASE (expr)
 496               = (unsigned)bp_unpack_value (bp, sizeof (short) * 8);
 497         }
 498     }
 499
 500   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 501     unpack_ts_block_value_fields (data_in, bp, expr);
 502
 503   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 504     unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
 505
 506   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 507     cl_optimization_stream_in (bp, TREE_OPTIMIZATION (expr));
 508
 509   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 510     {
 511       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 512       if (length > 0)
 513         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 514     }
 515
 516   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 517     {
 518       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 519       if (length > 0)
 520         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 521     }
 522
 523   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 524     cl_target_option_stream_in (data_in, bp, TREE_TARGET_OPTION (expr));
 525
 526   if (code == OMP_CLAUSE)
 527     unpack_ts_omp_clause_value_fields (data_in, bp, expr);
 528 }
 529
 530
 531 /* Read all the language-independent bitfield values for EXPR from IB.
 532    Return the partially unpacked bitpack so the caller can unpack any other
 533    bitfield values that the writer may have written.  */
 534
 535 struct bitpack_d
 536 streamer_read_tree_bitfields (struct lto_input_block *ib,
 537                               struct data_in *data_in, tree expr)
 538 {
 539   enum tree_code code;
 540   struct bitpack_d bp;
 541
 542   /* Read the bitpack of non-pointer values from IB.  */
 543   bp = streamer_read_bitpack (ib);
 544
 545   /* The first word in BP contains the code of the tree that we
 546      are about to read.  */
 547   code = (enum tree_code) bp_unpack_value (&bp, 16);
 548   lto_tag_check (lto_tree_code_to_tag (code),
 549                  lto_tree_code_to_tag (TREE_CODE (expr)));
 550
 551   /* Unpack all the value fields from BP.  */
 552   unpack_value_fields (data_in, &bp, expr);
 553
 554   return bp;
 555 }
 556
 557
 558 /* Materialize a new tree from input block IB using descriptors in
 559    DATA_IN.  The code for the new tree should match TAG.  Store in
 560    *IX_P the index into the reader cache where the new tree is stored.  */
 561
 562 tree
 563 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 564                      enum LTO_tags tag)
 565 {
 566   enum tree_code code;
 567   tree result;
 568 #ifdef LTO_STREAMER_DEBUG
 569   HOST_WIDE_INT orig_address_in_writer;
 570 #endif
 571
 572   result = NULL_TREE;
 573
 574 #ifdef LTO_STREAMER_DEBUG
 575   /* Read the word representing the memory address for the tree
 576      as it was written by the writer.  This is useful when
 577      debugging differences between the writer and reader.  */
 578   orig_address_in_writer = streamer_read_hwi (ib);
 579   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 580 #endif
 581
 582   code = lto_tag_to_tree_code (tag);
 583
 584   /* We should never see an SSA_NAME tree.  Only the version numbers of
 585      SSA names are ever written out.  See input_ssa_names.  */
 586   gcc_assert (code != SSA_NAME);
 587
 588   /* Instantiate a new tree using the header data.  */
 589   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 590     result = streamer_read_string_cst (data_in, ib);
 591   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 592     result = input_identifier (data_in, ib);
 593   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 594     {
 595       HOST_WIDE_INT len = streamer_read_hwi (ib);
 596       result = make_tree_vec (len);
 597     }
 598   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 599     {
 600       HOST_WIDE_INT len = streamer_read_hwi (ib);
 601       result = make_vector (len);
 602     }
 603   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 604     {
 605       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 606       result = make_tree_binfo (len);
 607     }
 608   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 609     {
 610       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 611       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 612       result = make_int_cst (len, ext_len);
 613     }
 614   else if (code == CALL_EXPR)
 615     {
 616       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 617       return build_vl_exp (CALL_EXPR, nargs + 3);
 618     }
 619   else if (code == OMP_CLAUSE)
 620     {
 621       enum omp_clause_code subcode
 622         = (enum omp_clause_code) streamer_read_uhwi (ib);
 623       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 624     }
 625   else
 626     {
 627       /* For all other nodes, materialize the tree with a raw
 628          make_node call.  */
 629       result = make_node (code);
 630     }
 631
 632 #ifdef LTO_STREAMER_DEBUG
 633   /* Store the original address of the tree as seen by the writer
 634      in RESULT's aux field.  This is useful when debugging streaming
 635      problems.  This way, a debugging session can be started on
 636      both writer and reader with a breakpoint using this address
 637      value in both.  */
 638   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 639 #endif
 640
 641   return result;
 642 }
 643
 644
 645 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 646    block IB.  DATA_IN contains tables and descriptors for the
 647    file being read.  */
 648
 649
 650 static void
 651 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 652                                    struct data_in *data_in, tree expr)
 653 {
 654   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 655     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 656 }
 657
 658
 659 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 660    block IB.  DATA_IN contains tables and descriptors for the
 661    file being read.  */
 662
 663 static void
 664 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 665                                    struct data_in *data_in, tree expr)
 666 {
 667   unsigned i;
 668   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 669     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 670 }
 671
 672
 673 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 674    block IB.  DATA_IN contains tables and descriptors for the
 675    file being read.  */
 676
 677 static void
 678 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 679                                     struct data_in *data_in, tree expr)
 680 {
 681   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 682   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 683 }
 684
 685
 686 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 687    from input block IB.  DATA_IN contains tables and descriptors for the
 688    file being read.  */
 689
 690 static void
 691 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 692                                          struct data_in *data_in, tree expr)
 693 {
 694   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 695   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 696 }
 697
 698
 699 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 700    input block IB.  DATA_IN contains tables and descriptors for the
 701    file being read.  */
 702
 703 static void
 704 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 705                                         struct data_in *data_in, tree expr)
 706 {
 707   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 708   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 709   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 710
 711   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 712      for early inlining so drop it on the floor instead of ICEing in
 713      dwarf2out.c.  */
 714
 715   if ((TREE_CODE (expr) == VAR_DECL
 716        || TREE_CODE (expr) == PARM_DECL)
 717       && DECL_HAS_VALUE_EXPR_P (expr))
 718     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 719
 720   if (TREE_CODE (expr) == VAR_DECL)
 721     {
 722       tree dexpr = stream_read_tree (ib, data_in);
 723       if (dexpr)
 724         SET_DECL_DEBUG_EXPR (expr, dexpr);
 725     }
 726 }
 727
 728
 729 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 730    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 731    file being read.  */
 732
 733 static void
 734 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 735                                             struct data_in *data_in, tree expr)
 736 {
 737   if (TREE_CODE (expr) == TYPE_DECL)
 738     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 739 }
 740
 741
 742 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 743    from input block IB.  DATA_IN contains tables and descriptors for the
 744    file being read.  */
 745
 746 static void
 747 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 748                                           struct data_in *data_in, tree expr)
 749 {
 750   tree id;
 751
 752   id = stream_read_tree (ib, data_in);
 753   if (id)
 754     {
 755       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 756       SET_DECL_ASSEMBLER_NAME (expr, id);
 757     }
 758 }
 759
 760
 761 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 762    input block IB.  DATA_IN contains tables and descriptors for the
 763    file being read.  */
 764
 765 static void
 766 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 767                                        struct data_in *data_in, tree expr)
 768 {
 769   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 770   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 771   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 772   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 773   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 774 }
 775
 776
 777 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 778    from input block IB.  DATA_IN contains tables and descriptors for the
 779    file being read.  */
 780
 781 static void
 782 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 783                                           struct data_in *data_in, tree expr)
 784 {
 785   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 786   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 787   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 788   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 789   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 790
 791   /* If the file contains a function with an EH personality set,
 792      then it was compiled with -fexceptions.  In that case, initialize
 793      the backend EH machinery.  */
 794   if (DECL_FUNCTION_PERSONALITY (expr))
 795     lto_init_eh ();
 796 }
 797
 798
 799 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 800    input block IB.  DATA_IN contains tables and descriptors for the file
 801    being read.  */
 802
 803 static void
 804 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 805                                         struct data_in *data_in, tree expr)
 806 {
 807   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 808   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 809   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 810   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 811   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 812      reconstructed during fixup.  */
 813   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 814      during fixup.  */
 815   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 816   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 817   /* TYPE_CANONICAL gets re-computed during type merging.  */
 818   TYPE_CANONICAL (expr) = NULL_TREE;
 819   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 820 }
 821
 822 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 823    from input block IB.  DATA_IN contains tables and descriptors for the
 824    file being read.  */
 825
 826 static void
 827 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 828                                             struct data_in *data_in,
 829                                             tree expr)
 830 {
 831   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 832     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 833   else if (TREE_CODE (expr) == ARRAY_TYPE)
 834     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 835   else if (RECORD_OR_UNION_TYPE_P (expr))
 836     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 837   else if (TREE_CODE (expr) == FUNCTION_TYPE
 838            || TREE_CODE (expr) == METHOD_TYPE)
 839     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 840
 841   if (!POINTER_TYPE_P (expr))
 842     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 843   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 844   if (RECORD_OR_UNION_TYPE_P (expr))
 845     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 846 }
 847
 848
 849 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 850    block IB.  DATA_IN contains tables and descriptors for the
 851    file being read.  */
 852
 853 static void
 854 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 855                                  struct data_in *data_in, tree expr)
 856 {
 857   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 858   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 859   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 860 }
 861
 862
 863 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 864    block IB.  DATA_IN contains tables and descriptors for the
 865    file being read.  */
 866
 867 static void
 868 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 869                                 struct data_in *data_in, tree expr)
 870 {
 871   int i;
 872
 873   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 874      instantiate EXPR.  */
 875   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 876     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 877 }
 878
 879
 880 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 881    block IB.  DATA_IN contains tables and descriptors for the
 882    file being read.  */
 883
 884
 885 static void
 886 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 887                                 struct data_in *data_in, tree expr)
 888 {
 889   int i;
 890
 891   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 892     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 893
 894   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 895 }
 896
 897
 898 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 899    block IB.  DATA_IN contains tables and descriptors for the
 900    file being read.  */
 901
 902 static void
 903 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 904                                   struct data_in *data_in, tree expr)
 905 {
 906   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 907
 908   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 909
 910   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 911      the limited cases we can handle - those that represent inlined
 912      function scopes.  For the rest them on the floor instead of ICEing in
 913      dwarf2out.c.  */
 914   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 915   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 916      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 917      dwarf2out.c.  */
 918
 919   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 920      streaming time.  */
 921
 922   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 923      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 924      stream the child relationship explicitly.  */
 925   if (BLOCK_SUPERCONTEXT (expr)
 926       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 927     {
 928       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 929       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 930     }
 931
 932   /* The global block is rooted at the TU decl.  Hook it here to
 933      avoid the need to stream in this block during WPA time.  */
 934   else if (BLOCK_SUPERCONTEXT (expr)
 935            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 936     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 937
 938   /* The function-level block is connected at the time we read in
 939      function bodies for the same reason.  */
 940 }
 941
 942
 943 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 944    block IB.  DATA_IN contains tables and descriptors for the
 945    file being read.  */
 946
 947 static void
 948 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 949                                   struct data_in *data_in, tree expr)
 950 {
 951   unsigned i;
 952   tree t;
 953
 954   /* Note that the number of slots in EXPR was read in
 955      streamer_alloc_tree when instantiating EXPR.  However, the
 956      vector is empty so we cannot rely on vec::length to know how many
 957      elements to read.  So, this list is emitted as a 0-terminated
 958      list on the writer side.  */
 959   do
 960     {
 961       t = stream_read_tree (ib, data_in);
 962       if (t)
 963         BINFO_BASE_BINFOS (expr)->quick_push (t);
 964     }
 965   while (t);
 966
 967   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 968   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 969   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 970
 971   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 972      unpacking the bitfield section.  */
 973   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 974     {
 975       tree a = stream_read_tree (ib, data_in);
 976       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 977     }
 978   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 979      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 980 }
 981
 982
 983 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 984    input block IB.  DATA_IN contains tables and descriptors for the
 985    file being read.  */
 986
 987 static void
 988 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 989                                         struct data_in *data_in, tree expr)
 990 {
 991   unsigned i;
 992
 993   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
 994     {
 995       constructor_elt e;
 996       e.index = stream_read_tree (ib, data_in);
 997       e.value = stream_read_tree (ib, data_in);
 998       (*CONSTRUCTOR_ELTS (expr))[i] = e;
 999     }
1000 }
1001
1002
1003 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1004    input block IB.  DATA_IN contains tables and descriptors for the
1005    file being read.  */
1006
1007 static void
1008 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1009                                        struct data_in *data_in, tree expr)
1010 {
1011   int i;
1012
1013   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1014     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1015   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1016 }
1017
1018
1019 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1020    contains tables and descriptors for the file being read.  */
1021
1022 void
1023 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1024                          tree expr)
1025 {
1026   enum tree_code code;
1027
1028   code = TREE_CODE (expr);
1029
1030   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1031     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1032
1033   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1034     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1035
1036   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1037     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1038
1039   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1040     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1041
1042   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1043     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1044
1045   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1046     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1047
1048   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1049     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1050
1051   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1052     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1053
1054   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1055     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1056
1057   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1058     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1059
1060   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1061     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1062
1063   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1064     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1065
1066   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1067     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1068
1069   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1070     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1071
1072   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1073     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1074
1075   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1076     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1077
1078   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1079     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1080
1081   if (code == OMP_CLAUSE)
1082     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1083 }
1084
1085
1086 /* Read an index IX from input block IB and return the tree node at
1087    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1088
1089 tree
1090 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1091 {
1092   unsigned HOST_WIDE_INT ix;
1093   tree result;
1094   enum LTO_tags expected_tag;
1095
1096   ix = streamer_read_uhwi (ib);
1097   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1098
1099   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1100   gcc_assert (result
1101               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1102
1103   return result;
1104 }
1105
1106
1107 /* Read a code and class from input block IB and return the
1108    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1109
1110 tree
1111 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1112 {
1113   enum built_in_class fclass;
1114   enum built_in_function fcode;
1115   const char *asmname;
1116   tree result;
1117
1118   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1119   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1120
1121   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1122
1123   if (fclass == BUILT_IN_NORMAL)
1124     {
1125       if (fcode >= END_BUILTINS)
1126         fatal_error ("machine independent builtin code out of range");
1127       result = builtin_decl_explicit (fcode);
1128       if (!result
1129           && fcode > BEGIN_CHKP_BUILTINS
1130           && fcode < END_CHKP_BUILTINS)
1131         {
1132           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1133           result = builtin_decl_explicit (fcode);
1134           result = chkp_maybe_clone_builtin_fndecl (result);
1135         }
1136       gcc_assert (result);
1137     }
1138   else if (fclass == BUILT_IN_MD)
1139     {
1140       result = targetm.builtin_decl (fcode, true);
1141       if (!result || result == error_mark_node)
1142         fatal_error ("target specific builtin not available");
1143     }
1144   else
1145     gcc_unreachable ();
1146
1147   asmname = streamer_read_string (data_in, ib);
1148   if (asmname)
1149     set_builtin_user_assembler_name (result, asmname);
1150
1151   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1152
1153   return result;
1154 }