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                                                                             11);
 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     SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
 488
 489   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 490     unpack_ts_block_value_fields (data_in, bp, expr);
 491
 492   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 493     unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
 494
 495   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 496     cl_optimization_stream_in (bp, TREE_OPTIMIZATION (expr));
 497
 498   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 499     {
 500       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 501       if (length > 0)
 502         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 503     }
 504
 505   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 506     {
 507       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 508       if (length > 0)
 509         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 510     }
 511
 512   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 513     cl_target_option_stream_in (data_in, bp, TREE_TARGET_OPTION (expr));
 514
 515   if (code == OMP_CLAUSE)
 516     unpack_ts_omp_clause_value_fields (data_in, bp, expr);
 517 }
 518
 519
 520 /* Read all the language-independent bitfield values for EXPR from IB.
 521    Return the partially unpacked bitpack so the caller can unpack any other
 522    bitfield values that the writer may have written.  */
 523
 524 struct bitpack_d
 525 streamer_read_tree_bitfields (struct lto_input_block *ib,
 526                               struct data_in *data_in, tree expr)
 527 {
 528   enum tree_code code;
 529   struct bitpack_d bp;
 530
 531   /* Read the bitpack of non-pointer values from IB.  */
 532   bp = streamer_read_bitpack (ib);
 533
 534   /* The first word in BP contains the code of the tree that we
 535      are about to read.  */
 536   code = (enum tree_code) bp_unpack_value (&bp, 16);
 537   lto_tag_check (lto_tree_code_to_tag (code),
 538                  lto_tree_code_to_tag (TREE_CODE (expr)));
 539
 540   /* Unpack all the value fields from BP.  */
 541   unpack_value_fields (data_in, &bp, expr);
 542
 543   return bp;
 544 }
 545
 546
 547 /* Materialize a new tree from input block IB using descriptors in
 548    DATA_IN.  The code for the new tree should match TAG.  Store in
 549    *IX_P the index into the reader cache where the new tree is stored.  */
 550
 551 tree
 552 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 553                      enum LTO_tags tag)
 554 {
 555   enum tree_code code;
 556   tree result;
 557 #ifdef LTO_STREAMER_DEBUG
 558   HOST_WIDE_INT orig_address_in_writer;
 559 #endif
 560
 561   result = NULL_TREE;
 562
 563 #ifdef LTO_STREAMER_DEBUG
 564   /* Read the word representing the memory address for the tree
 565      as it was written by the writer.  This is useful when
 566      debugging differences between the writer and reader.  */
 567   orig_address_in_writer = streamer_read_hwi (ib);
 568   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 569 #endif
 570
 571   code = lto_tag_to_tree_code (tag);
 572
 573   /* We should never see an SSA_NAME tree.  Only the version numbers of
 574      SSA names are ever written out.  See input_ssa_names.  */
 575   gcc_assert (code != SSA_NAME);
 576
 577   /* Instantiate a new tree using the header data.  */
 578   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 579     result = streamer_read_string_cst (data_in, ib);
 580   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 581     result = input_identifier (data_in, ib);
 582   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 583     {
 584       HOST_WIDE_INT len = streamer_read_hwi (ib);
 585       result = make_tree_vec (len);
 586     }
 587   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 588     {
 589       HOST_WIDE_INT len = streamer_read_hwi (ib);
 590       result = make_vector (len);
 591     }
 592   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 593     {
 594       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 595       result = make_tree_binfo (len);
 596     }
 597   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 598     {
 599       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 600       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 601       result = make_int_cst (len, ext_len);
 602     }
 603   else if (code == CALL_EXPR)
 604     {
 605       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 606       return build_vl_exp (CALL_EXPR, nargs + 3);
 607     }
 608   else if (code == OMP_CLAUSE)
 609     {
 610       enum omp_clause_code subcode
 611         = (enum omp_clause_code) streamer_read_uhwi (ib);
 612       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 613     }
 614   else
 615     {
 616       /* For all other nodes, materialize the tree with a raw
 617          make_node call.  */
 618       result = make_node (code);
 619     }
 620
 621 #ifdef LTO_STREAMER_DEBUG
 622   /* Store the original address of the tree as seen by the writer
 623      in RESULT's aux field.  This is useful when debugging streaming
 624      problems.  This way, a debugging session can be started on
 625      both writer and reader with a breakpoint using this address
 626      value in both.  */
 627   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 628 #endif
 629
 630   return result;
 631 }
 632
 633
 634 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 635    block IB.  DATA_IN contains tables and descriptors for the
 636    file being read.  */
 637
 638
 639 static void
 640 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 641                                    struct data_in *data_in, tree expr)
 642 {
 643   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 644     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 645 }
 646
 647
 648 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 649    block IB.  DATA_IN contains tables and descriptors for the
 650    file being read.  */
 651
 652 static void
 653 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 654                                    struct data_in *data_in, tree expr)
 655 {
 656   unsigned i;
 657   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 658     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 659 }
 660
 661
 662 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 663    block IB.  DATA_IN contains tables and descriptors for the
 664    file being read.  */
 665
 666 static void
 667 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 668                                     struct data_in *data_in, tree expr)
 669 {
 670   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 671   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 672 }
 673
 674
 675 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 676    from input block IB.  DATA_IN contains tables and descriptors for the
 677    file being read.  */
 678
 679 static void
 680 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 681                                          struct data_in *data_in, tree expr)
 682 {
 683   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 684   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 685 }
 686
 687
 688 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 689    input block IB.  DATA_IN contains tables and descriptors for the
 690    file being read.  */
 691
 692 static void
 693 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 694                                         struct data_in *data_in, tree expr)
 695 {
 696   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 697   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 698   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 699
 700   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 701      for early inlining so drop it on the floor instead of ICEing in
 702      dwarf2out.c.  */
 703
 704   if ((TREE_CODE (expr) == VAR_DECL
 705        || TREE_CODE (expr) == PARM_DECL)
 706       && DECL_HAS_VALUE_EXPR_P (expr))
 707     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 708
 709   if (TREE_CODE (expr) == VAR_DECL)
 710     {
 711       tree dexpr = stream_read_tree (ib, data_in);
 712       if (dexpr)
 713         SET_DECL_DEBUG_EXPR (expr, dexpr);
 714     }
 715 }
 716
 717
 718 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 719    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 720    file being read.  */
 721
 722 static void
 723 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 724                                             struct data_in *data_in, tree expr)
 725 {
 726   if (TREE_CODE (expr) == TYPE_DECL)
 727     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 728 }
 729
 730
 731 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 732    from input block IB.  DATA_IN contains tables and descriptors for the
 733    file being read.  */
 734
 735 static void
 736 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 737                                           struct data_in *data_in, tree expr)
 738 {
 739   tree id;
 740
 741   id = stream_read_tree (ib, data_in);
 742   if (id)
 743     {
 744       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 745       SET_DECL_ASSEMBLER_NAME (expr, id);
 746     }
 747 }
 748
 749
 750 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 751    input block IB.  DATA_IN contains tables and descriptors for the
 752    file being read.  */
 753
 754 static void
 755 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 756                                        struct data_in *data_in, tree expr)
 757 {
 758   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 759   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 760   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 761   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 762   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 763 }
 764
 765
 766 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 767    from input block IB.  DATA_IN contains tables and descriptors for the
 768    file being read.  */
 769
 770 static void
 771 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 772                                           struct data_in *data_in, tree expr)
 773 {
 774   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 775   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 776   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 777   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 778   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 779
 780   /* If the file contains a function with an EH personality set,
 781      then it was compiled with -fexceptions.  In that case, initialize
 782      the backend EH machinery.  */
 783   if (DECL_FUNCTION_PERSONALITY (expr))
 784     lto_init_eh ();
 785 }
 786
 787
 788 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 789    input block IB.  DATA_IN contains tables and descriptors for the file
 790    being read.  */
 791
 792 static void
 793 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 794                                         struct data_in *data_in, tree expr)
 795 {
 796   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 797   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 798   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 799   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 800   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 801      reconstructed during fixup.  */
 802   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 803      during fixup.  */
 804   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 805   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 806   /* TYPE_CANONICAL gets re-computed during type merging.  */
 807   TYPE_CANONICAL (expr) = NULL_TREE;
 808   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 809 }
 810
 811 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 812    from input block IB.  DATA_IN contains tables and descriptors for the
 813    file being read.  */
 814
 815 static void
 816 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 817                                             struct data_in *data_in,
 818                                             tree expr)
 819 {
 820   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 821     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 822   else if (TREE_CODE (expr) == ARRAY_TYPE)
 823     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 824   else if (RECORD_OR_UNION_TYPE_P (expr))
 825     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 826   else if (TREE_CODE (expr) == FUNCTION_TYPE
 827            || TREE_CODE (expr) == METHOD_TYPE)
 828     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 829
 830   if (!POINTER_TYPE_P (expr))
 831     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 832   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 833   if (RECORD_OR_UNION_TYPE_P (expr))
 834     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 835 }
 836
 837
 838 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 839    block IB.  DATA_IN contains tables and descriptors for the
 840    file being read.  */
 841
 842 static void
 843 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 844                                  struct data_in *data_in, tree expr)
 845 {
 846   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 847   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 848   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 849 }
 850
 851
 852 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 853    block IB.  DATA_IN contains tables and descriptors for the
 854    file being read.  */
 855
 856 static void
 857 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 858                                 struct data_in *data_in, tree expr)
 859 {
 860   int i;
 861
 862   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 863      instantiate EXPR.  */
 864   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 865     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 866 }
 867
 868
 869 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 870    block IB.  DATA_IN contains tables and descriptors for the
 871    file being read.  */
 872
 873
 874 static void
 875 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 876                                 struct data_in *data_in, tree expr)
 877 {
 878   int i;
 879
 880   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 881     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 882
 883   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 884 }
 885
 886
 887 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 888    block IB.  DATA_IN contains tables and descriptors for the
 889    file being read.  */
 890
 891 static void
 892 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 893                                   struct data_in *data_in, tree expr)
 894 {
 895   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 896
 897   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 898
 899   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 900      the limited cases we can handle - those that represent inlined
 901      function scopes.  For the rest them on the floor instead of ICEing in
 902      dwarf2out.c.  */
 903   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 904   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 905      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 906      dwarf2out.c.  */
 907
 908   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 909      streaming time.  */
 910
 911   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 912      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 913      stream the child relationship explicitly.  */
 914   if (BLOCK_SUPERCONTEXT (expr)
 915       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 916     {
 917       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 918       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 919     }
 920
 921   /* The global block is rooted at the TU decl.  Hook it here to
 922      avoid the need to stream in this block during WPA time.  */
 923   else if (BLOCK_SUPERCONTEXT (expr)
 924            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 925     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 926
 927   /* The function-level block is connected at the time we read in
 928      function bodies for the same reason.  */
 929 }
 930
 931
 932 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 933    block IB.  DATA_IN contains tables and descriptors for the
 934    file being read.  */
 935
 936 static void
 937 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 938                                   struct data_in *data_in, tree expr)
 939 {
 940   unsigned i;
 941   tree t;
 942
 943   /* Note that the number of slots in EXPR was read in
 944      streamer_alloc_tree when instantiating EXPR.  However, the
 945      vector is empty so we cannot rely on vec::length to know how many
 946      elements to read.  So, this list is emitted as a 0-terminated
 947      list on the writer side.  */
 948   do
 949     {
 950       t = stream_read_tree (ib, data_in);
 951       if (t)
 952         BINFO_BASE_BINFOS (expr)->quick_push (t);
 953     }
 954   while (t);
 955
 956   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 957   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 958   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 959
 960   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 961      unpacking the bitfield section.  */
 962   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 963     {
 964       tree a = stream_read_tree (ib, data_in);
 965       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 966     }
 967   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 968      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 969 }
 970
 971
 972 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 973    input block IB.  DATA_IN contains tables and descriptors for the
 974    file being read.  */
 975
 976 static void
 977 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 978                                         struct data_in *data_in, tree expr)
 979 {
 980   unsigned i;
 981
 982   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
 983     {
 984       constructor_elt e;
 985       e.index = stream_read_tree (ib, data_in);
 986       e.value = stream_read_tree (ib, data_in);
 987       (*CONSTRUCTOR_ELTS (expr))[i] = e;
 988     }
 989 }
 990
 991
 992 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
 993    input block IB.  DATA_IN contains tables and descriptors for the
 994    file being read.  */
 995
 996 static void
 997 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
 998                                        struct data_in *data_in, tree expr)
 999 {
1000   int i;
1001
1002   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1003     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1004   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1005 }
1006
1007
1008 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1009    contains tables and descriptors for the file being read.  */
1010
1011 void
1012 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1013                          tree expr)
1014 {
1015   enum tree_code code;
1016
1017   code = TREE_CODE (expr);
1018
1019   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1020     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1021
1022   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1023     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1024
1025   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1026     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1027
1028   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1029     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1030
1031   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1032     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1033
1034   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1035     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1036
1037   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1038     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1039
1040   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1041     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1042
1043   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1044     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1045
1046   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1047     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1048
1049   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1050     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1051
1052   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1053     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1054
1055   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1056     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1057
1058   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1059     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1062     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1065     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1068     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1069
1070   if (code == OMP_CLAUSE)
1071     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1072 }
1073
1074
1075 /* Read an index IX from input block IB and return the tree node at
1076    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1077
1078 tree
1079 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1080 {
1081   unsigned HOST_WIDE_INT ix;
1082   tree result;
1083   enum LTO_tags expected_tag;
1084
1085   ix = streamer_read_uhwi (ib);
1086   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1087
1088   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1089   gcc_assert (result
1090               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1091
1092   return result;
1093 }
1094
1095
1096 /* Read a code and class from input block IB and return the
1097    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1098
1099 tree
1100 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1101 {
1102   enum built_in_class fclass;
1103   enum built_in_function fcode;
1104   const char *asmname;
1105   tree result;
1106
1107   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1108   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1109
1110   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1111
1112   if (fclass == BUILT_IN_NORMAL)
1113     {
1114       if (fcode >= END_BUILTINS)
1115         fatal_error ("machine independent builtin code out of range");
1116       result = builtin_decl_explicit (fcode);
1117       if (!result
1118           && fcode > BEGIN_CHKP_BUILTINS
1119           && fcode < END_CHKP_BUILTINS)
1120         {
1121           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1122           result = builtin_decl_explicit (fcode);
1123           result = chkp_maybe_clone_builtin_fndecl (result);
1124         }
1125       gcc_assert (result);
1126     }
1127   else if (fclass == BUILT_IN_MD)
1128     {
1129       result = targetm.builtin_decl (fcode, true);
1130       if (!result || result == error_mark_node)
1131         fatal_error ("target specific builtin not available");
1132     }
1133   else
1134     gcc_unreachable ();
1135
1136   asmname = streamer_read_string (data_in, ib);
1137   if (asmname)
1138     set_builtin_user_assembler_name (result, asmname);
1139
1140   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1141
1142   return result;
1143 }