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 inline 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   else
 162     bp_unpack_value (bp, 1);
 163   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 164   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 165   if (TYPE_P (expr))
 166     {
 167       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 168       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 169     }
 170   else if (TREE_CODE (expr) == SSA_NAME)
 171     {
 172       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 173       bp_unpack_value (bp, 8);
 174     }
 175   else
 176     bp_unpack_value (bp, 9);
 177 }
 178
 179
 180 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 181    expression EXPR from bitpack BP.  */
 182
 183 static void
 184 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 185 {
 186   int i;
 187   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 188     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 189 }
 190
 191
 192 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 193    expression EXPR from bitpack BP.  */
 194
 195 static void
 196 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 197 {
 198   unsigned i;
 199   REAL_VALUE_TYPE r;
 200   REAL_VALUE_TYPE *rp;
 201
 202   /* Clear all bits of the real value type so that we can later do
 203      bitwise comparisons to see if two values are the same.  */
 204   memset (&r, 0, sizeof r);
 205   r.cl = (unsigned) bp_unpack_value (bp, 2);
 206   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 207   r.sign = (unsigned) bp_unpack_value (bp, 1);
 208   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 209   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 210   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 211   for (i = 0; i < SIGSZ; i++)
 212     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 213
 214   rp = ggc_alloc<real_value> ();
 215   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 216   TREE_REAL_CST_PTR (expr) = rp;
 217 }
 218
 219
 220 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 221    expression EXPR from bitpack BP.  */
 222
 223 static void
 224 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 225 {
 226   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 227   fp->mode = bp_unpack_machine_mode (bp);
 228   fp->data.low = bp_unpack_var_len_int (bp);
 229   fp->data.high = bp_unpack_var_len_int (bp);
 230   TREE_FIXED_CST_PTR (expr) = fp;
 231 }
 232
 233 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 234    of expression EXPR from bitpack BP.  */
 235
 236 static void
 237 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 238 {
 239   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 240   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 241   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 242   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 243   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 244   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 245   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 246   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 247   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 248   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 249   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 250 #ifdef ACCEL_COMPILER
 251   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 252     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 253 #endif
 254   if (TREE_CODE (expr) == LABEL_DECL)
 255     {
 256       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 257
 258       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 259          force gimple_set_bb to recreate label_to_block_map.  */
 260       LABEL_DECL_UID (expr) = -1;
 261     }
 262
 263   if (TREE_CODE (expr) == FIELD_DECL)
 264     {
 265       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 266       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 267       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 268     }
 269
 270   if (TREE_CODE (expr) == VAR_DECL)
 271     {
 272       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 273       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 274     }
 275
 276   if (TREE_CODE (expr) == RESULT_DECL
 277       || TREE_CODE (expr) == PARM_DECL
 278       || TREE_CODE (expr) == VAR_DECL)
 279     {
 280       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 281       if (TREE_CODE (expr) == VAR_DECL
 282           || TREE_CODE (expr) == PARM_DECL)
 283         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 284     }
 285 }
 286
 287
 288 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 289    of expression EXPR from bitpack BP.  */
 290
 291 static void
 292 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 293 {
 294   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 295 }
 296
 297
 298 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 299    of expression EXPR from bitpack BP.  */
 300
 301 static void
 302 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 303 {
 304   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 305   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 306   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 307   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 308   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 309   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 310   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 311
 312   if (TREE_CODE (expr) == VAR_DECL)
 313     {
 314       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 315       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 316     }
 317
 318   if (TREE_CODE (expr) == FUNCTION_DECL)
 319     {
 320       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 321       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 322       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 323     }
 324 }
 325
 326
 327 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 328    of expression EXPR from bitpack BP.  */
 329
 330 static void
 331 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 332 {
 333   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 334                                                BUILT_IN_LAST);
 335   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 339   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 340   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 341   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 342   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 343   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 344   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 345   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 346   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 347                         = (unsigned) bp_unpack_value (bp, 1);
 348   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 349   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 350   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 351   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 352   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 353     {
 354       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 355                                                                             12);
 356       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 357           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 358         fatal_error (input_location,
 359                      "machine independent builtin code out of range");
 360       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 361         {
 362           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 363           if (!result || result == error_mark_node)
 364             fatal_error (input_location,
 365                          "target specific builtin not available");
 366         }
 367     }
 368 }
 369
 370
 371 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 372    of expression EXPR from bitpack BP.  */
 373
 374 static void
 375 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 376 {
 377   machine_mode mode;
 378
 379   mode = bp_unpack_machine_mode (bp);
 380   SET_TYPE_MODE (expr, mode);
 381   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 382   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 383   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 384   if (RECORD_OR_UNION_TYPE_P (expr))
 385     {
 386       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 387       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 388     }
 389   else if (TREE_CODE (expr) == ARRAY_TYPE)
 390     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 391   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 392   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 393   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 394   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 395   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 396   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 397 #ifdef ACCEL_COMPILER
 398   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 399     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 400 #endif
 401   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 402 }
 403
 404
 405 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 406    of expression EXPR from bitpack BP.  */
 407
 408 static void
 409 unpack_ts_block_value_fields (struct data_in *data_in,
 410                               struct bitpack_d *bp, tree expr)
 411 {
 412   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 413   /* BLOCK_NUMBER is recomputed.  */
 414   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 415 }
 416
 417 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 418    structure of expression EXPR from bitpack BP.  */
 419
 420 static void
 421 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 422                                               struct bitpack_d *bp, tree expr)
 423 {
 424   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 425   vec_safe_push (all_translation_units, expr);
 426 }
 427
 428
 429 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 430    structure of expression EXPR from bitpack BP.  */
 431
 432 static void
 433 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 434                                    struct bitpack_d *bp, tree expr)
 435 {
 436   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 437   switch (OMP_CLAUSE_CODE (expr))
 438     {
 439     case OMP_CLAUSE_DEFAULT:
 440       OMP_CLAUSE_DEFAULT_KIND (expr)
 441         = bp_unpack_enum (bp, omp_clause_default_kind,
 442                           OMP_CLAUSE_DEFAULT_LAST);
 443       break;
 444     case OMP_CLAUSE_SCHEDULE:
 445       OMP_CLAUSE_SCHEDULE_KIND (expr)
 446         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 447                           OMP_CLAUSE_SCHEDULE_LAST);
 448       break;
 449     case OMP_CLAUSE_DEPEND:
 450       OMP_CLAUSE_DEPEND_KIND (expr)
 451         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 452       break;
 453     case OMP_CLAUSE_MAP:
 454       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 455                                                      GOMP_MAP_LAST));
 456       break;
 457     case OMP_CLAUSE_PROC_BIND:
 458       OMP_CLAUSE_PROC_BIND_KIND (expr)
 459         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 460                           OMP_CLAUSE_PROC_BIND_LAST);
 461       break;
 462     case OMP_CLAUSE_REDUCTION:
 463       OMP_CLAUSE_REDUCTION_CODE (expr)
 464         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 465       break;
 466     default:
 467       break;
 468     }
 469 }
 470
 471
 472 /* Read all the language-independent bitfield values for EXPR from IB.
 473    Return the partially unpacked bitpack so the caller can unpack any other
 474    bitfield values that the writer may have written.  */
 475
 476 void
 477 streamer_read_tree_bitfields (struct lto_input_block *ib,
 478                               struct data_in *data_in, tree expr)
 479 {
 480   enum tree_code code;
 481   struct bitpack_d bp;
 482
 483   /* Read the bitpack of non-pointer values from IB.  */
 484   bp = streamer_read_bitpack (ib);
 485
 486   /* The first word in BP contains the code of the tree that we
 487      are about to read.  */
 488   code = (enum tree_code) bp_unpack_value (&bp, 16);
 489   lto_tag_check (lto_tree_code_to_tag (code),
 490                  lto_tree_code_to_tag (TREE_CODE (expr)));
 491
 492   /* Note that all these functions are highly sensitive to changes in
 493      the types and sizes of each of the fields being packed.  */
 494   unpack_ts_base_value_fields (&bp, expr);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 497     unpack_ts_int_cst_value_fields (&bp, expr);
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 500     unpack_ts_real_cst_value_fields (&bp, expr);
 501
 502   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 503     unpack_ts_fixed_cst_value_fields (&bp, expr);
 504
 505   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 506     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 507
 508   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 509     unpack_ts_decl_common_value_fields (&bp, expr);
 510
 511   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 512     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 513
 514   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 515     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 516
 517   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 518     unpack_ts_function_decl_value_fields (&bp, expr);
 519
 520   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 521     unpack_ts_type_common_value_fields (&bp, expr);
 522
 523   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 524     {
 525       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 526       if (code == MEM_REF
 527           || code == TARGET_MEM_REF)
 528         {
 529           MR_DEPENDENCE_CLIQUE (expr)
 530             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 531           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 532             MR_DEPENDENCE_BASE (expr)
 533               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 534         }
 535     }
 536
 537   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 538     unpack_ts_block_value_fields (data_in, &bp, expr);
 539
 540   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 541     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 542
 543   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 544     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 545
 546   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 547     {
 548       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 549       if (length > 0)
 550         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 551     }
 552
 553   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 554     {
 555       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 556       if (length > 0)
 557         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 558     }
 559
 560 #ifndef ACCEL_COMPILER
 561   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 562     {
 563       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 564       if (targetm.target_option.post_stream_in)
 565         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 566     }
 567 #endif
 568
 569   if (code == OMP_CLAUSE)
 570     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 571 }
 572
 573
 574 /* Materialize a new tree from input block IB using descriptors in
 575    DATA_IN.  The code for the new tree should match TAG.  Store in
 576    *IX_P the index into the reader cache where the new tree is stored.  */
 577
 578 tree
 579 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 580                      enum LTO_tags tag)
 581 {
 582   enum tree_code code;
 583   tree result;
 584 #ifdef LTO_STREAMER_DEBUG
 585   HOST_WIDE_INT orig_address_in_writer;
 586 #endif
 587
 588   result = NULL_TREE;
 589
 590 #ifdef LTO_STREAMER_DEBUG
 591   /* Read the word representing the memory address for the tree
 592      as it was written by the writer.  This is useful when
 593      debugging differences between the writer and reader.  */
 594   orig_address_in_writer = streamer_read_hwi (ib);
 595   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 596 #endif
 597
 598   code = lto_tag_to_tree_code (tag);
 599
 600   /* We should never see an SSA_NAME tree.  Only the version numbers of
 601      SSA names are ever written out.  See input_ssa_names.  */
 602   gcc_assert (code != SSA_NAME);
 603
 604   /* Instantiate a new tree using the header data.  */
 605   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 606     result = streamer_read_string_cst (data_in, ib);
 607   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 608     result = input_identifier (data_in, ib);
 609   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 610     {
 611       HOST_WIDE_INT len = streamer_read_hwi (ib);
 612       result = make_tree_vec (len);
 613     }
 614   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 615     {
 616       HOST_WIDE_INT len = streamer_read_hwi (ib);
 617       result = make_vector (len);
 618     }
 619   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 620     {
 621       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 622       result = make_tree_binfo (len);
 623     }
 624   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 625     {
 626       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 627       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 628       result = make_int_cst (len, ext_len);
 629     }
 630   else if (code == CALL_EXPR)
 631     {
 632       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 633       return build_vl_exp (CALL_EXPR, nargs + 3);
 634     }
 635   else if (code == OMP_CLAUSE)
 636     {
 637       enum omp_clause_code subcode
 638         = (enum omp_clause_code) streamer_read_uhwi (ib);
 639       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 640     }
 641   else
 642     {
 643       /* For all other nodes, materialize the tree with a raw
 644          make_node call.  */
 645       result = make_node (code);
 646     }
 647
 648 #ifdef LTO_STREAMER_DEBUG
 649   /* Store the original address of the tree as seen by the writer
 650      in RESULT's aux field.  This is useful when debugging streaming
 651      problems.  This way, a debugging session can be started on
 652      both writer and reader with a breakpoint using this address
 653      value in both.  */
 654   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 655 #endif
 656
 657   return result;
 658 }
 659
 660
 661 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 662    block IB.  DATA_IN contains tables and descriptors for the
 663    file being read.  */
 664
 665
 666 static void
 667 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 668                                    struct data_in *data_in, tree expr)
 669 {
 670   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 671     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 672 }
 673
 674
 675 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 676    block IB.  DATA_IN contains tables and descriptors for the
 677    file being read.  */
 678
 679 static void
 680 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 681                                    struct data_in *data_in, tree expr)
 682 {
 683   unsigned i;
 684   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 685     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 686 }
 687
 688
 689 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 690    block IB.  DATA_IN contains tables and descriptors for the
 691    file being read.  */
 692
 693 static void
 694 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 695                                     struct data_in *data_in, tree expr)
 696 {
 697   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 698   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 699 }
 700
 701
 702 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 703    from input block IB.  DATA_IN contains tables and descriptors for the
 704    file being read.  */
 705
 706 static void
 707 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 708                                          struct data_in *data_in, tree expr)
 709 {
 710   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 711   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 712 }
 713
 714
 715 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 716    input block IB.  DATA_IN contains tables and descriptors for the
 717    file being read.  */
 718
 719 static void
 720 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 721                                         struct data_in *data_in, tree expr)
 722 {
 723   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 724   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 725   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 726
 727   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 728      for early inlining so drop it on the floor instead of ICEing in
 729      dwarf2out.c.  */
 730
 731   if ((TREE_CODE (expr) == VAR_DECL
 732        || TREE_CODE (expr) == PARM_DECL)
 733       && DECL_HAS_VALUE_EXPR_P (expr))
 734     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 735
 736   if (TREE_CODE (expr) == VAR_DECL)
 737     {
 738       tree dexpr = stream_read_tree (ib, data_in);
 739       if (dexpr)
 740         SET_DECL_DEBUG_EXPR (expr, dexpr);
 741     }
 742 }
 743
 744
 745 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 746    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 747    file being read.  */
 748
 749 static void
 750 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 751                                             struct data_in *data_in, tree expr)
 752 {
 753   if (TREE_CODE (expr) == TYPE_DECL)
 754     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 755 }
 756
 757
 758 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 759    from input block IB.  DATA_IN contains tables and descriptors for the
 760    file being read.  */
 761
 762 static void
 763 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 764                                           struct data_in *data_in, tree expr)
 765 {
 766   tree id;
 767
 768   id = stream_read_tree (ib, data_in);
 769   if (id)
 770     {
 771       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 772       SET_DECL_ASSEMBLER_NAME (expr, id);
 773     }
 774 }
 775
 776
 777 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 778    input block IB.  DATA_IN contains tables and descriptors for the
 779    file being read.  */
 780
 781 static void
 782 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 783                                        struct data_in *data_in, tree expr)
 784 {
 785   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 786   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 787   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 788   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 789   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 790 }
 791
 792
 793 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 794    from input block IB.  DATA_IN contains tables and descriptors for the
 795    file being read.  */
 796
 797 static void
 798 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 799                                           struct data_in *data_in, tree expr)
 800 {
 801   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 802   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 803   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 804 #ifndef ACCEL_COMPILER
 805   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 806 #endif
 807   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 808
 809   /* If the file contains a function with an EH personality set,
 810      then it was compiled with -fexceptions.  In that case, initialize
 811      the backend EH machinery.  */
 812   if (DECL_FUNCTION_PERSONALITY (expr))
 813     lto_init_eh ();
 814 }
 815
 816
 817 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 818    input block IB.  DATA_IN contains tables and descriptors for the file
 819    being read.  */
 820
 821 static void
 822 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 823                                         struct data_in *data_in, tree expr)
 824 {
 825   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 826   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 827   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 828   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 829   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 830      reconstructed during fixup.  */
 831   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 832      during fixup.  */
 833   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 834   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 835   /* TYPE_CANONICAL gets re-computed during type merging.  */
 836   TYPE_CANONICAL (expr) = NULL_TREE;
 837   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 838 }
 839
 840 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 841    from input block IB.  DATA_IN contains tables and descriptors for the
 842    file being read.  */
 843
 844 static void
 845 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 846                                             struct data_in *data_in,
 847                                             tree expr)
 848 {
 849   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 850     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 851   else if (TREE_CODE (expr) == ARRAY_TYPE)
 852     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 853   else if (RECORD_OR_UNION_TYPE_P (expr))
 854     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 855   else if (TREE_CODE (expr) == FUNCTION_TYPE
 856            || TREE_CODE (expr) == METHOD_TYPE)
 857     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 858
 859   if (!POINTER_TYPE_P (expr))
 860     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 861   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 862   if (RECORD_OR_UNION_TYPE_P (expr))
 863     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 864 }
 865
 866
 867 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 868    block IB.  DATA_IN contains tables and descriptors for the
 869    file being read.  */
 870
 871 static void
 872 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 873                                  struct data_in *data_in, tree expr)
 874 {
 875   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 876   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 877   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 878 }
 879
 880
 881 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 882    block IB.  DATA_IN contains tables and descriptors for the
 883    file being read.  */
 884
 885 static void
 886 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 887                                 struct data_in *data_in, tree expr)
 888 {
 889   int i;
 890
 891   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 892      instantiate EXPR.  */
 893   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 894     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 895 }
 896
 897
 898 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 899    block IB.  DATA_IN contains tables and descriptors for the
 900    file being read.  */
 901
 902
 903 static void
 904 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 905                                 struct data_in *data_in, tree expr)
 906 {
 907   int i;
 908   tree block;
 909
 910   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 911     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 912
 913   block = stream_read_tree (ib, data_in);
 914
 915   /* TODO: Block is stored in the locus information.  It may make more sense to
 916      to make it go via the location cache.  */
 917   if (block)
 918     {
 919       data_in->location_cache.apply_location_cache ();
 920       TREE_SET_BLOCK (expr, block);
 921     }
 922 }
 923
 924
 925 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 926    block IB.  DATA_IN contains tables and descriptors for the
 927    file being read.  */
 928
 929 static void
 930 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 931                                   struct data_in *data_in, tree expr)
 932 {
 933   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 934
 935   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 936
 937   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 938      the limited cases we can handle - those that represent inlined
 939      function scopes.  For the rest them on the floor instead of ICEing in
 940      dwarf2out.c.  */
 941   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 942   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 943      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 944      dwarf2out.c.  */
 945
 946   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 947      streaming time.  */
 948
 949   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 950      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 951      stream the child relationship explicitly.  */
 952   if (BLOCK_SUPERCONTEXT (expr)
 953       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 954     {
 955       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 956       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 957     }
 958
 959   /* The global block is rooted at the TU decl.  Hook it here to
 960      avoid the need to stream in this block during WPA time.  */
 961   else if (BLOCK_SUPERCONTEXT (expr)
 962            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 963     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 964
 965   /* The function-level block is connected at the time we read in
 966      function bodies for the same reason.  */
 967 }
 968
 969
 970 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 971    block IB.  DATA_IN contains tables and descriptors for the
 972    file being read.  */
 973
 974 static void
 975 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 976                                   struct data_in *data_in, tree expr)
 977 {
 978   unsigned i;
 979   tree t;
 980
 981   /* Note that the number of slots in EXPR was read in
 982      streamer_alloc_tree when instantiating EXPR.  However, the
 983      vector is empty so we cannot rely on vec::length to know how many
 984      elements to read.  So, this list is emitted as a 0-terminated
 985      list on the writer side.  */
 986   do
 987     {
 988       t = stream_read_tree (ib, data_in);
 989       if (t)
 990         BINFO_BASE_BINFOS (expr)->quick_push (t);
 991     }
 992   while (t);
 993
 994   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 995   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 996   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 997
 998   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 999      unpacking the bitfield section.  */
1000   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
1001     {
1002       tree a = stream_read_tree (ib, data_in);
1003       (*BINFO_BASE_ACCESSES (expr))[i] = a;
1004     }
1005   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
1006      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
1007 }
1008
1009
1010 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1011    input block IB.  DATA_IN contains tables and descriptors for the
1012    file being read.  */
1013
1014 static void
1015 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1016                                         struct data_in *data_in, tree expr)
1017 {
1018   unsigned i;
1019
1020   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1021     {
1022       constructor_elt e;
1023       e.index = stream_read_tree (ib, data_in);
1024       e.value = stream_read_tree (ib, data_in);
1025       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1026     }
1027 }
1028
1029
1030 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1031    input block IB.  DATA_IN contains tables and descriptors for the
1032    file being read.  */
1033
1034 static void
1035 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1036                                        struct data_in *data_in, tree expr)
1037 {
1038   int i;
1039
1040   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1041     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1042   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1043 }
1044
1045
1046 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1047    contains tables and descriptors for the file being read.  */
1048
1049 void
1050 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1051                          tree expr)
1052 {
1053   enum tree_code code;
1054
1055   code = TREE_CODE (expr);
1056
1057   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1058     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1059
1060   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1061     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1062
1063   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1064     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1065
1066   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1067     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1068
1069   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1070     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1071
1072   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1073     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1074
1075   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1076     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1077
1078   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1079     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1080
1081   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1082     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1083
1084   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1085     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1086
1087   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1088     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1089
1090   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1091     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1092
1093   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1094     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1095
1096   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1097     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1098
1099   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1100     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1101
1102   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1103     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1104
1105   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1106     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1107
1108   if (code == OMP_CLAUSE)
1109     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1110 }
1111
1112
1113 /* Read an index IX from input block IB and return the tree node at
1114    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1115
1116 tree
1117 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1118 {
1119   unsigned HOST_WIDE_INT ix;
1120   tree result;
1121   enum LTO_tags expected_tag;
1122
1123   ix = streamer_read_uhwi (ib);
1124   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1125
1126   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1127   gcc_assert (result
1128               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1129
1130   return result;
1131 }
1132
1133
1134 /* Read a code and class from input block IB and return the
1135    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1136
1137 tree
1138 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1139 {
1140   enum built_in_class fclass;
1141   enum built_in_function fcode;
1142   const char *asmname;
1143   tree result;
1144
1145   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1146   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1147
1148   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1149
1150   if (fclass == BUILT_IN_NORMAL)
1151     {
1152       if (fcode >= END_BUILTINS)
1153         fatal_error (input_location,
1154                      "machine independent builtin code out of range");
1155       result = builtin_decl_explicit (fcode);
1156       if (!result
1157           && fcode > BEGIN_CHKP_BUILTINS
1158           && fcode < END_CHKP_BUILTINS)
1159         {
1160           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1161           result = builtin_decl_explicit (fcode);
1162           result = chkp_maybe_clone_builtin_fndecl (result);
1163         }
1164       gcc_assert (result);
1165     }
1166   else if (fclass == BUILT_IN_MD)
1167     {
1168       result = targetm.builtin_decl (fcode, true);
1169       if (!result || result == error_mark_node)
1170         fatal_error (input_location, "target specific builtin not available");
1171     }
1172   else
1173     gcc_unreachable ();
1174
1175   asmname = streamer_read_string (data_in, ib);
1176   if (asmname)
1177     set_builtin_user_assembler_name (result, asmname);
1178
1179   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1180
1181   return result;
1182 }