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 "vec.h"
  28 #include "input.h"
  29 #include "alias.h"
  30 #include "symtab.h"
  31 #include "options.h"
  32 #include "inchash.h"
  33 #include "tree.h"
  34 #include "fold-const.h"
  35 #include "stringpool.h"
  36 #include "predict.h"
  37 #include "tm.h"
  38 #include "hard-reg-set.h"
  39 #include "input.h"
  40 #include "function.h"
  41 #include "basic-block.h"
  42 #include "tree-ssa-alias.h"
  43 #include "internal-fn.h"
  44 #include "gimple-expr.h"
  45 #include "is-a.h"
  46 #include "gimple.h"
  47 #include "hash-map.h"
  48 #include "plugin-api.h"
  49 #include "ipa-ref.h"
  50 #include "cgraph.h"
  51 #include "tree-streamer.h"
  52 #include "data-streamer.h"
  53 #include "streamer-hooks.h"
  54 #include "lto-streamer.h"
  55 #include "builtins.h"
  56 #include "ipa-chkp.h"
  57 #include "gomp-constants.h"
  58
  59
  60 /* Read a STRING_CST from the string table in DATA_IN using input
  61    block IB.  */
  62
  63 tree
  64 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  65 {
  66   unsigned int len;
  67   const char * ptr;
  68
  69   ptr = streamer_read_indexed_string (data_in, ib, &len);
  70   if (!ptr)
  71     return NULL;
  72   return build_string (len, ptr);
  73 }
  74
  75
  76 /* Read an IDENTIFIER from the string table in DATA_IN using input
  77    block IB.  */
  78
  79 static tree
  80 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  81 {
  82   unsigned int len;
  83   const char *ptr;
  84
  85   ptr = streamer_read_indexed_string (data_in, ib, &len);
  86   if (!ptr)
  87     return NULL;
  88   return get_identifier_with_length (ptr, len);
  89 }
  90
  91
  92 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  93    tables and descriptors for the file being read.  */
  94
  95 tree
  96 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  97 {
  98   tree first, prev, curr;
  99
 100   /* The chain is written as NULL terminated list of trees.  */
 101   first = prev = NULL_TREE;
 102   do
 103     {
 104       curr = stream_read_tree (ib, data_in);
 105       if (prev)
 106         TREE_CHAIN (prev) = curr;
 107       else
 108         first = curr;
 109
 110       prev = curr;
 111     }
 112   while (curr);
 113
 114   return first;
 115 }
 116
 117
 118 /* Unpack all the non-pointer fields of the TS_BASE structure of
 119    expression EXPR from bitpack BP.  */
 120
 121 static inline void
 122 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 123 {
 124   /* Note that the code for EXPR has already been unpacked to create EXPR in
 125      streamer_alloc_tree.  */
 126   if (!TYPE_P (expr))
 127     {
 128       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 129       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 130       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 131
 132       /* TREE_PUBLIC is used on types to indicate that the type
 133          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 134          so we skip it here.  */
 135       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 136     }
 137   else
 138     bp_unpack_value (bp, 4);
 139   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 140   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 141   if (DECL_P (expr))
 142     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 143   else if (TYPE_P (expr))
 144     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 145   else
 146     bp_unpack_value (bp, 1);
 147   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 148   if (TYPE_P (expr))
 149     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 150   else
 151     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 152   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 153   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 154   if (TREE_CODE (expr) != TREE_BINFO)
 155     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 156   else
 157     bp_unpack_value (bp, 1);
 158   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 159   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 160   if (TYPE_P (expr))
 161     {
 162       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 163       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 164     }
 165   else if (TREE_CODE (expr) == SSA_NAME)
 166     {
 167       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 168       bp_unpack_value (bp, 8);
 169     }
 170   else
 171     bp_unpack_value (bp, 9);
 172 }
 173
 174
 175 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 176    expression EXPR from bitpack BP.  */
 177
 178 static void
 179 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 180 {
 181   int i;
 182   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 183     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 184 }
 185
 186
 187 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 188    expression EXPR from bitpack BP.  */
 189
 190 static void
 191 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 192 {
 193   unsigned i;
 194   REAL_VALUE_TYPE r;
 195   REAL_VALUE_TYPE *rp;
 196
 197   /* Clear all bits of the real value type so that we can later do
 198      bitwise comparisons to see if two values are the same.  */
 199   memset (&r, 0, sizeof r);
 200   r.cl = (unsigned) bp_unpack_value (bp, 2);
 201   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 202   r.sign = (unsigned) bp_unpack_value (bp, 1);
 203   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 204   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 205   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 206   for (i = 0; i < SIGSZ; i++)
 207     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 208
 209   rp = ggc_alloc<real_value> ();
 210   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 211   TREE_REAL_CST_PTR (expr) = rp;
 212 }
 213
 214
 215 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 216    expression EXPR from bitpack BP.  */
 217
 218 static void
 219 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 220 {
 221   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 222   fp->mode = bp_unpack_machine_mode (bp);
 223   fp->data.low = bp_unpack_var_len_int (bp);
 224   fp->data.high = bp_unpack_var_len_int (bp);
 225   TREE_FIXED_CST_PTR (expr) = fp;
 226 }
 227
 228 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 229    of expression EXPR from bitpack BP.  */
 230
 231 static void
 232 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 233 {
 234   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 235   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 236   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 237   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 238   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 239   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 240   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 241   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 242   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 243   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 244   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 245 #ifdef ACCEL_COMPILER
 246   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 247     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 248 #endif
 249   if (TREE_CODE (expr) == LABEL_DECL)
 250     {
 251       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 252
 253       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 254          force gimple_set_bb to recreate label_to_block_map.  */
 255       LABEL_DECL_UID (expr) = -1;
 256     }
 257
 258   if (TREE_CODE (expr) == FIELD_DECL)
 259     {
 260       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 261       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 262       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 263     }
 264
 265   if (TREE_CODE (expr) == VAR_DECL)
 266     {
 267       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 268       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 269     }
 270
 271   if (TREE_CODE (expr) == RESULT_DECL
 272       || TREE_CODE (expr) == PARM_DECL
 273       || TREE_CODE (expr) == VAR_DECL)
 274     {
 275       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 276       if (TREE_CODE (expr) == VAR_DECL
 277           || TREE_CODE (expr) == PARM_DECL)
 278         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 279     }
 280 }
 281
 282
 283 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 284    of expression EXPR from bitpack BP.  */
 285
 286 static void
 287 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 288 {
 289   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 290 }
 291
 292
 293 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 294    of expression EXPR from bitpack BP.  */
 295
 296 static void
 297 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 298 {
 299   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 300   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 301   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 302   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 303   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 304   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 305   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 306
 307   if (TREE_CODE (expr) == VAR_DECL)
 308     {
 309       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 310       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 311     }
 312
 313   if (TREE_CODE (expr) == FUNCTION_DECL)
 314     {
 315       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 316       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 317       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 318     }
 319 }
 320
 321
 322 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 323    of expression EXPR from bitpack BP.  */
 324
 325 static void
 326 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 327 {
 328   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 329                                                BUILT_IN_LAST);
 330   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 339   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 340   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 341   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 342                         = (unsigned) bp_unpack_value (bp, 1);
 343   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 344   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 345   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 346   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 347   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 348     {
 349       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 350                                                                             12);
 351       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 352           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 353         fatal_error (input_location,
 354                      "machine independent builtin code out of range");
 355       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 356         {
 357           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 358           if (!result || result == error_mark_node)
 359             fatal_error (input_location,
 360                          "target specific builtin not available");
 361         }
 362     }
 363 }
 364
 365
 366 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 367    of expression EXPR from bitpack BP.  */
 368
 369 static void
 370 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 371 {
 372   machine_mode mode;
 373
 374   mode = bp_unpack_machine_mode (bp);
 375   SET_TYPE_MODE (expr, mode);
 376   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 377   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 378   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 379   if (RECORD_OR_UNION_TYPE_P (expr))
 380     {
 381       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 382       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 383     }
 384   else if (TREE_CODE (expr) == ARRAY_TYPE)
 385     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 386   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 387   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 388   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 389   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 390   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 391   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 392 #ifdef ACCEL_COMPILER
 393   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 394     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 395 #endif
 396   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 397 }
 398
 399
 400 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 401    of expression EXPR from bitpack BP.  */
 402
 403 static void
 404 unpack_ts_block_value_fields (struct data_in *data_in,
 405                               struct bitpack_d *bp, tree expr)
 406 {
 407   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 408   /* BLOCK_NUMBER is recomputed.  */
 409   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 410 }
 411
 412 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 413    structure of expression EXPR from bitpack BP.  */
 414
 415 static void
 416 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 417                                               struct bitpack_d *bp, tree expr)
 418 {
 419   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 420   vec_safe_push (all_translation_units, expr);
 421 }
 422
 423
 424 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 425    structure of expression EXPR from bitpack BP.  */
 426
 427 static void
 428 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 429                                    struct bitpack_d *bp, tree expr)
 430 {
 431   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 432   switch (OMP_CLAUSE_CODE (expr))
 433     {
 434     case OMP_CLAUSE_DEFAULT:
 435       OMP_CLAUSE_DEFAULT_KIND (expr)
 436         = bp_unpack_enum (bp, omp_clause_default_kind,
 437                           OMP_CLAUSE_DEFAULT_LAST);
 438       break;
 439     case OMP_CLAUSE_SCHEDULE:
 440       OMP_CLAUSE_SCHEDULE_KIND (expr)
 441         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 442                           OMP_CLAUSE_SCHEDULE_LAST);
 443       break;
 444     case OMP_CLAUSE_DEPEND:
 445       OMP_CLAUSE_DEPEND_KIND (expr)
 446         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 447       break;
 448     case OMP_CLAUSE_MAP:
 449       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 450                                                      GOMP_MAP_LAST));
 451       break;
 452     case OMP_CLAUSE_PROC_BIND:
 453       OMP_CLAUSE_PROC_BIND_KIND (expr)
 454         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 455                           OMP_CLAUSE_PROC_BIND_LAST);
 456       break;
 457     case OMP_CLAUSE_REDUCTION:
 458       OMP_CLAUSE_REDUCTION_CODE (expr)
 459         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 460       break;
 461     default:
 462       break;
 463     }
 464 }
 465
 466
 467 /* Read all the language-independent bitfield values for EXPR from IB.
 468    Return the partially unpacked bitpack so the caller can unpack any other
 469    bitfield values that the writer may have written.  */
 470
 471 void
 472 streamer_read_tree_bitfields (struct lto_input_block *ib,
 473                               struct data_in *data_in, tree expr)
 474 {
 475   enum tree_code code;
 476   struct bitpack_d bp;
 477
 478   /* Read the bitpack of non-pointer values from IB.  */
 479   bp = streamer_read_bitpack (ib);
 480
 481   /* The first word in BP contains the code of the tree that we
 482      are about to read.  */
 483   code = (enum tree_code) bp_unpack_value (&bp, 16);
 484   lto_tag_check (lto_tree_code_to_tag (code),
 485                  lto_tree_code_to_tag (TREE_CODE (expr)));
 486
 487   /* Note that all these functions are highly sensitive to changes in
 488      the types and sizes of each of the fields being packed.  */
 489   unpack_ts_base_value_fields (&bp, expr);
 490
 491   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 492     unpack_ts_int_cst_value_fields (&bp, expr);
 493
 494   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 495     unpack_ts_real_cst_value_fields (&bp, expr);
 496
 497   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 498     unpack_ts_fixed_cst_value_fields (&bp, expr);
 499
 500   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 501     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 502
 503   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 504     unpack_ts_decl_common_value_fields (&bp, expr);
 505
 506   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 507     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 508
 509   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 510     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 511
 512   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 513     unpack_ts_function_decl_value_fields (&bp, expr);
 514
 515   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 516     unpack_ts_type_common_value_fields (&bp, expr);
 517
 518   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 519     {
 520       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 521       if (code == MEM_REF
 522           || code == TARGET_MEM_REF)
 523         {
 524           MR_DEPENDENCE_CLIQUE (expr)
 525             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 526           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 527             MR_DEPENDENCE_BASE (expr)
 528               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 529         }
 530     }
 531
 532   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 533     unpack_ts_block_value_fields (data_in, &bp, expr);
 534
 535   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 536     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 537
 538   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 539     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 540
 541   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 542     {
 543       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 544       if (length > 0)
 545         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 546     }
 547
 548   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 549     {
 550       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 551       if (length > 0)
 552         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 553     }
 554
 555 #ifndef ACCEL_COMPILER
 556   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 557     {
 558       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 559       if (targetm.target_option.post_stream_in)
 560         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 561     }
 562 #endif
 563
 564   if (code == OMP_CLAUSE)
 565     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 566 }
 567
 568
 569 /* Materialize a new tree from input block IB using descriptors in
 570    DATA_IN.  The code for the new tree should match TAG.  Store in
 571    *IX_P the index into the reader cache where the new tree is stored.  */
 572
 573 tree
 574 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 575                      enum LTO_tags tag)
 576 {
 577   enum tree_code code;
 578   tree result;
 579 #ifdef LTO_STREAMER_DEBUG
 580   HOST_WIDE_INT orig_address_in_writer;
 581 #endif
 582
 583   result = NULL_TREE;
 584
 585 #ifdef LTO_STREAMER_DEBUG
 586   /* Read the word representing the memory address for the tree
 587      as it was written by the writer.  This is useful when
 588      debugging differences between the writer and reader.  */
 589   orig_address_in_writer = streamer_read_hwi (ib);
 590   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 591 #endif
 592
 593   code = lto_tag_to_tree_code (tag);
 594
 595   /* We should never see an SSA_NAME tree.  Only the version numbers of
 596      SSA names are ever written out.  See input_ssa_names.  */
 597   gcc_assert (code != SSA_NAME);
 598
 599   /* Instantiate a new tree using the header data.  */
 600   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 601     result = streamer_read_string_cst (data_in, ib);
 602   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 603     result = input_identifier (data_in, ib);
 604   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 605     {
 606       HOST_WIDE_INT len = streamer_read_hwi (ib);
 607       result = make_tree_vec (len);
 608     }
 609   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 610     {
 611       HOST_WIDE_INT len = streamer_read_hwi (ib);
 612       result = make_vector (len);
 613     }
 614   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 615     {
 616       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 617       result = make_tree_binfo (len);
 618     }
 619   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 620     {
 621       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 622       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 623       result = make_int_cst (len, ext_len);
 624     }
 625   else if (code == CALL_EXPR)
 626     {
 627       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 628       return build_vl_exp (CALL_EXPR, nargs + 3);
 629     }
 630   else if (code == OMP_CLAUSE)
 631     {
 632       enum omp_clause_code subcode
 633         = (enum omp_clause_code) streamer_read_uhwi (ib);
 634       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 635     }
 636   else
 637     {
 638       /* For all other nodes, materialize the tree with a raw
 639          make_node call.  */
 640       result = make_node (code);
 641     }
 642
 643 #ifdef LTO_STREAMER_DEBUG
 644   /* Store the original address of the tree as seen by the writer
 645      in RESULT's aux field.  This is useful when debugging streaming
 646      problems.  This way, a debugging session can be started on
 647      both writer and reader with a breakpoint using this address
 648      value in both.  */
 649   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 650 #endif
 651
 652   return result;
 653 }
 654
 655
 656 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 657    block IB.  DATA_IN contains tables and descriptors for the
 658    file being read.  */
 659
 660
 661 static void
 662 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 663                                    struct data_in *data_in, tree expr)
 664 {
 665   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 666     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 667 }
 668
 669
 670 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 671    block IB.  DATA_IN contains tables and descriptors for the
 672    file being read.  */
 673
 674 static void
 675 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 676                                    struct data_in *data_in, tree expr)
 677 {
 678   unsigned i;
 679   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 680     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 681 }
 682
 683
 684 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 685    block IB.  DATA_IN contains tables and descriptors for the
 686    file being read.  */
 687
 688 static void
 689 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 690                                     struct data_in *data_in, tree expr)
 691 {
 692   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 693   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 694 }
 695
 696
 697 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 698    from input block IB.  DATA_IN contains tables and descriptors for the
 699    file being read.  */
 700
 701 static void
 702 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 703                                          struct data_in *data_in, tree expr)
 704 {
 705   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 706   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 707 }
 708
 709
 710 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 711    input block IB.  DATA_IN contains tables and descriptors for the
 712    file being read.  */
 713
 714 static void
 715 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 716                                         struct data_in *data_in, tree expr)
 717 {
 718   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 719   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 720   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 721
 722   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 723      for early inlining so drop it on the floor instead of ICEing in
 724      dwarf2out.c.  */
 725
 726   if ((TREE_CODE (expr) == VAR_DECL
 727        || TREE_CODE (expr) == PARM_DECL)
 728       && DECL_HAS_VALUE_EXPR_P (expr))
 729     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 730
 731   if (TREE_CODE (expr) == VAR_DECL)
 732     {
 733       tree dexpr = stream_read_tree (ib, data_in);
 734       if (dexpr)
 735         SET_DECL_DEBUG_EXPR (expr, dexpr);
 736     }
 737 }
 738
 739
 740 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 741    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 742    file being read.  */
 743
 744 static void
 745 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 746                                             struct data_in *data_in, tree expr)
 747 {
 748   if (TREE_CODE (expr) == TYPE_DECL)
 749     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 750 }
 751
 752
 753 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 754    from input block IB.  DATA_IN contains tables and descriptors for the
 755    file being read.  */
 756
 757 static void
 758 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 759                                           struct data_in *data_in, tree expr)
 760 {
 761   tree id;
 762
 763   id = stream_read_tree (ib, data_in);
 764   if (id)
 765     {
 766       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 767       SET_DECL_ASSEMBLER_NAME (expr, id);
 768     }
 769 }
 770
 771
 772 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 773    input block IB.  DATA_IN contains tables and descriptors for the
 774    file being read.  */
 775
 776 static void
 777 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 778                                        struct data_in *data_in, tree expr)
 779 {
 780   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 781   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 782   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 783   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 784   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 785 }
 786
 787
 788 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 789    from input block IB.  DATA_IN contains tables and descriptors for the
 790    file being read.  */
 791
 792 static void
 793 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 794                                           struct data_in *data_in, tree expr)
 795 {
 796   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 797   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 798   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 799 #ifndef ACCEL_COMPILER
 800   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 801 #endif
 802   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 803
 804   /* If the file contains a function with an EH personality set,
 805      then it was compiled with -fexceptions.  In that case, initialize
 806      the backend EH machinery.  */
 807   if (DECL_FUNCTION_PERSONALITY (expr))
 808     lto_init_eh ();
 809 }
 810
 811
 812 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 813    input block IB.  DATA_IN contains tables and descriptors for the file
 814    being read.  */
 815
 816 static void
 817 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 818                                         struct data_in *data_in, tree expr)
 819 {
 820   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 821   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 822   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 823   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 824   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 825      reconstructed during fixup.  */
 826   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 827      during fixup.  */
 828   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 829   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 830   /* TYPE_CANONICAL gets re-computed during type merging.  */
 831   TYPE_CANONICAL (expr) = NULL_TREE;
 832   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 833 }
 834
 835 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 836    from input block IB.  DATA_IN contains tables and descriptors for the
 837    file being read.  */
 838
 839 static void
 840 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 841                                             struct data_in *data_in,
 842                                             tree expr)
 843 {
 844   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 845     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 846   else if (TREE_CODE (expr) == ARRAY_TYPE)
 847     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 848   else if (RECORD_OR_UNION_TYPE_P (expr))
 849     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 850   else if (TREE_CODE (expr) == FUNCTION_TYPE
 851            || TREE_CODE (expr) == METHOD_TYPE)
 852     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 853
 854   if (!POINTER_TYPE_P (expr))
 855     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 856   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 857   if (RECORD_OR_UNION_TYPE_P (expr))
 858     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 859 }
 860
 861
 862 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 863    block IB.  DATA_IN contains tables and descriptors for the
 864    file being read.  */
 865
 866 static void
 867 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 868                                  struct data_in *data_in, tree expr)
 869 {
 870   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 871   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 872   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 873 }
 874
 875
 876 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 877    block IB.  DATA_IN contains tables and descriptors for the
 878    file being read.  */
 879
 880 static void
 881 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 882                                 struct data_in *data_in, tree expr)
 883 {
 884   int i;
 885
 886   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 887      instantiate EXPR.  */
 888   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 889     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 890 }
 891
 892
 893 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 894    block IB.  DATA_IN contains tables and descriptors for the
 895    file being read.  */
 896
 897
 898 static void
 899 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 900                                 struct data_in *data_in, tree expr)
 901 {
 902   int i;
 903   tree block;
 904
 905   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 906     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 907
 908   block = stream_read_tree (ib, data_in);
 909
 910   /* TODO: Block is stored in the locus information.  It may make more sense to
 911      to make it go via the location cache.  */
 912   if (block)
 913     {
 914       data_in->location_cache.apply_location_cache ();
 915       TREE_SET_BLOCK (expr, block);
 916     }
 917 }
 918
 919
 920 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 921    block IB.  DATA_IN contains tables and descriptors for the
 922    file being read.  */
 923
 924 static void
 925 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 926                                   struct data_in *data_in, tree expr)
 927 {
 928   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 929
 930   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 931
 932   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 933      the limited cases we can handle - those that represent inlined
 934      function scopes.  For the rest them on the floor instead of ICEing in
 935      dwarf2out.c.  */
 936   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 937   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 938      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 939      dwarf2out.c.  */
 940
 941   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 942      streaming time.  */
 943
 944   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 945      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 946      stream the child relationship explicitly.  */
 947   if (BLOCK_SUPERCONTEXT (expr)
 948       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 949     {
 950       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 951       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 952     }
 953
 954   /* The global block is rooted at the TU decl.  Hook it here to
 955      avoid the need to stream in this block during WPA time.  */
 956   else if (BLOCK_SUPERCONTEXT (expr)
 957            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 958     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 959
 960   /* The function-level block is connected at the time we read in
 961      function bodies for the same reason.  */
 962 }
 963
 964
 965 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 966    block IB.  DATA_IN contains tables and descriptors for the
 967    file being read.  */
 968
 969 static void
 970 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 971                                   struct data_in *data_in, tree expr)
 972 {
 973   unsigned i;
 974   tree t;
 975
 976   /* Note that the number of slots in EXPR was read in
 977      streamer_alloc_tree when instantiating EXPR.  However, the
 978      vector is empty so we cannot rely on vec::length to know how many
 979      elements to read.  So, this list is emitted as a 0-terminated
 980      list on the writer side.  */
 981   do
 982     {
 983       t = stream_read_tree (ib, data_in);
 984       if (t)
 985         BINFO_BASE_BINFOS (expr)->quick_push (t);
 986     }
 987   while (t);
 988
 989   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 990   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 991   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 992
 993   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 994      unpacking the bitfield section.  */
 995   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 996     {
 997       tree a = stream_read_tree (ib, data_in);
 998       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 999     }
1000   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
1001      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
1002 }
1003
1004
1005 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1006    input block IB.  DATA_IN contains tables and descriptors for the
1007    file being read.  */
1008
1009 static void
1010 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1011                                         struct data_in *data_in, tree expr)
1012 {
1013   unsigned i;
1014
1015   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1016     {
1017       constructor_elt e;
1018       e.index = stream_read_tree (ib, data_in);
1019       e.value = stream_read_tree (ib, data_in);
1020       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1021     }
1022 }
1023
1024
1025 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1026    input block IB.  DATA_IN contains tables and descriptors for the
1027    file being read.  */
1028
1029 static void
1030 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1031                                        struct data_in *data_in, tree expr)
1032 {
1033   int i;
1034
1035   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1036     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1037   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1038 }
1039
1040
1041 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1042    contains tables and descriptors for the file being read.  */
1043
1044 void
1045 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1046                          tree expr)
1047 {
1048   enum tree_code code;
1049
1050   code = TREE_CODE (expr);
1051
1052   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1053     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1054
1055   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1056     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1057
1058   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1059     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1062     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1065     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1068     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1069
1070   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1071     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1072
1073   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1074     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1075
1076   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1077     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1078
1079   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1080     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1081
1082   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1083     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1084
1085   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1086     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1087
1088   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1089     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1090
1091   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1092     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1093
1094   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1095     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1096
1097   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1098     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1099
1100   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1101     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1102
1103   if (code == OMP_CLAUSE)
1104     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1105 }
1106
1107
1108 /* Read an index IX from input block IB and return the tree node at
1109    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1110
1111 tree
1112 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1113 {
1114   unsigned HOST_WIDE_INT ix;
1115   tree result;
1116   enum LTO_tags expected_tag;
1117
1118   ix = streamer_read_uhwi (ib);
1119   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1120
1121   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1122   gcc_assert (result
1123               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1124
1125   return result;
1126 }
1127
1128
1129 /* Read a code and class from input block IB and return the
1130    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1131
1132 tree
1133 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1134 {
1135   enum built_in_class fclass;
1136   enum built_in_function fcode;
1137   const char *asmname;
1138   tree result;
1139
1140   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1141   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1142
1143   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1144
1145   if (fclass == BUILT_IN_NORMAL)
1146     {
1147       if (fcode >= END_BUILTINS)
1148         fatal_error (input_location,
1149                      "machine independent builtin code out of range");
1150       result = builtin_decl_explicit (fcode);
1151       if (!result
1152           && fcode > BEGIN_CHKP_BUILTINS
1153           && fcode < END_CHKP_BUILTINS)
1154         {
1155           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1156           result = builtin_decl_explicit (fcode);
1157           result = chkp_maybe_clone_builtin_fndecl (result);
1158         }
1159       gcc_assert (result);
1160     }
1161   else if (fclass == BUILT_IN_MD)
1162     {
1163       result = targetm.builtin_decl (fcode, true);
1164       if (!result || result == error_mark_node)
1165         fatal_error (input_location, "target specific builtin not available");
1166     }
1167   else
1168     gcc_unreachable ();
1169
1170   asmname = streamer_read_string (data_in, ib);
1171   if (asmname)
1172     set_builtin_user_assembler_name (result, asmname);
1173
1174   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1175
1176   return result;
1177 }