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       if (AGGREGATE_TYPE_P (expr))
 168         TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 169       else
 170         TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 171       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 172     }
 173   else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
 174     REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 175   else if (TREE_CODE (expr) == SSA_NAME)
 176     {
 177       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 178       bp_unpack_value (bp, 8);
 179     }
 180   else
 181     bp_unpack_value (bp, 9);
 182 }
 183
 184
 185 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 186    expression EXPR from bitpack BP.  */
 187
 188 static void
 189 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 190 {
 191   int i;
 192   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 193     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 194 }
 195
 196
 197 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 198    expression EXPR from bitpack BP.  */
 199
 200 static void
 201 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 202 {
 203   unsigned i;
 204   REAL_VALUE_TYPE r;
 205   REAL_VALUE_TYPE *rp;
 206
 207   /* Clear all bits of the real value type so that we can later do
 208      bitwise comparisons to see if two values are the same.  */
 209   memset (&r, 0, sizeof r);
 210   r.cl = (unsigned) bp_unpack_value (bp, 2);
 211   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 212   r.sign = (unsigned) bp_unpack_value (bp, 1);
 213   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 214   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 215   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 216   for (i = 0; i < SIGSZ; i++)
 217     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 218
 219   rp = ggc_alloc<real_value> ();
 220   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 221   TREE_REAL_CST_PTR (expr) = rp;
 222 }
 223
 224
 225 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 226    expression EXPR from bitpack BP.  */
 227
 228 static void
 229 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 230 {
 231   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 232   fp->mode = bp_unpack_machine_mode (bp);
 233   fp->data.low = bp_unpack_var_len_int (bp);
 234   fp->data.high = bp_unpack_var_len_int (bp);
 235   TREE_FIXED_CST_PTR (expr) = fp;
 236 }
 237
 238 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 239    of expression EXPR from bitpack BP.  */
 240
 241 static void
 242 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 243 {
 244   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 245   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 246   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 247   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 248   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 249   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 250   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 251   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 252   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 253   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 254   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 255 #ifdef ACCEL_COMPILER
 256   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 257     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 258 #endif
 259   if (TREE_CODE (expr) == LABEL_DECL)
 260     {
 261       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 262
 263       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 264          force gimple_set_bb to recreate label_to_block_map.  */
 265       LABEL_DECL_UID (expr) = -1;
 266     }
 267
 268   if (TREE_CODE (expr) == FIELD_DECL)
 269     {
 270       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 271       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 272       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 273     }
 274
 275   if (TREE_CODE (expr) == VAR_DECL)
 276     {
 277       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 278       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 279     }
 280
 281   if (TREE_CODE (expr) == RESULT_DECL
 282       || TREE_CODE (expr) == PARM_DECL
 283       || TREE_CODE (expr) == VAR_DECL)
 284     {
 285       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 286       if (TREE_CODE (expr) == VAR_DECL
 287           || TREE_CODE (expr) == PARM_DECL)
 288         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 289     }
 290 }
 291
 292
 293 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 294    of expression EXPR from bitpack BP.  */
 295
 296 static void
 297 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 298 {
 299   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 300 }
 301
 302
 303 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 304    of expression EXPR from bitpack BP.  */
 305
 306 static void
 307 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 308 {
 309   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 310   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 311   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 312   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 313   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 314   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 315   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 316
 317   if (TREE_CODE (expr) == VAR_DECL)
 318     {
 319       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 320       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 321     }
 322
 323   if (TREE_CODE (expr) == FUNCTION_DECL)
 324     {
 325       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 326       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 327       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 328     }
 329 }
 330
 331
 332 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 333    of expression EXPR from bitpack BP.  */
 334
 335 static void
 336 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 337 {
 338   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 339                                                BUILT_IN_LAST);
 340   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 341   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 342   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 343   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 344   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 345   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 346   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 347   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 348   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 349   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 350   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 351   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 352                         = (unsigned) bp_unpack_value (bp, 1);
 353   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 354   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 355   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 356   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 357   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 358     {
 359       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 360                                                                             12);
 361       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 362           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 363         fatal_error (input_location,
 364                      "machine independent builtin code out of range");
 365       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 366         {
 367           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 368           if (!result || result == error_mark_node)
 369             fatal_error (input_location,
 370                          "target specific builtin not available");
 371         }
 372     }
 373 }
 374
 375
 376 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 377    of expression EXPR from bitpack BP.  */
 378
 379 static void
 380 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 381 {
 382   machine_mode mode;
 383
 384   mode = bp_unpack_machine_mode (bp);
 385   SET_TYPE_MODE (expr, mode);
 386   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 387   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 388   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 389   if (RECORD_OR_UNION_TYPE_P (expr))
 390     {
 391       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 392       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 393     }
 394   else if (TREE_CODE (expr) == ARRAY_TYPE)
 395     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 396   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 397   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 398   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 399   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 400   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 401   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 402 #ifdef ACCEL_COMPILER
 403   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 404     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 405 #endif
 406   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 407 }
 408
 409
 410 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 411    of expression EXPR from bitpack BP.  */
 412
 413 static void
 414 unpack_ts_block_value_fields (struct data_in *data_in,
 415                               struct bitpack_d *bp, tree expr)
 416 {
 417   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 418   /* BLOCK_NUMBER is recomputed.  */
 419   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 420 }
 421
 422 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 423    structure of expression EXPR from bitpack BP.  */
 424
 425 static void
 426 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 427                                               struct bitpack_d *bp, tree expr)
 428 {
 429   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 430   vec_safe_push (all_translation_units, expr);
 431 }
 432
 433
 434 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 435    structure of expression EXPR from bitpack BP.  */
 436
 437 static void
 438 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 439                                    struct bitpack_d *bp, tree expr)
 440 {
 441   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 442   switch (OMP_CLAUSE_CODE (expr))
 443     {
 444     case OMP_CLAUSE_DEFAULT:
 445       OMP_CLAUSE_DEFAULT_KIND (expr)
 446         = bp_unpack_enum (bp, omp_clause_default_kind,
 447                           OMP_CLAUSE_DEFAULT_LAST);
 448       break;
 449     case OMP_CLAUSE_SCHEDULE:
 450       OMP_CLAUSE_SCHEDULE_KIND (expr)
 451         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 452                           OMP_CLAUSE_SCHEDULE_LAST);
 453       break;
 454     case OMP_CLAUSE_DEPEND:
 455       OMP_CLAUSE_DEPEND_KIND (expr)
 456         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 457       break;
 458     case OMP_CLAUSE_MAP:
 459       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 460                                                      GOMP_MAP_LAST));
 461       break;
 462     case OMP_CLAUSE_PROC_BIND:
 463       OMP_CLAUSE_PROC_BIND_KIND (expr)
 464         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 465                           OMP_CLAUSE_PROC_BIND_LAST);
 466       break;
 467     case OMP_CLAUSE_REDUCTION:
 468       OMP_CLAUSE_REDUCTION_CODE (expr)
 469         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 470       break;
 471     default:
 472       break;
 473     }
 474 }
 475
 476
 477 /* Read all the language-independent bitfield values for EXPR from IB.
 478    Return the partially unpacked bitpack so the caller can unpack any other
 479    bitfield values that the writer may have written.  */
 480
 481 void
 482 streamer_read_tree_bitfields (struct lto_input_block *ib,
 483                               struct data_in *data_in, tree expr)
 484 {
 485   enum tree_code code;
 486   struct bitpack_d bp;
 487
 488   /* Read the bitpack of non-pointer values from IB.  */
 489   bp = streamer_read_bitpack (ib);
 490
 491   /* The first word in BP contains the code of the tree that we
 492      are about to read.  */
 493   code = (enum tree_code) bp_unpack_value (&bp, 16);
 494   lto_tag_check (lto_tree_code_to_tag (code),
 495                  lto_tree_code_to_tag (TREE_CODE (expr)));
 496
 497   /* Note that all these functions are highly sensitive to changes in
 498      the types and sizes of each of the fields being packed.  */
 499   unpack_ts_base_value_fields (&bp, expr);
 500
 501   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 502     unpack_ts_int_cst_value_fields (&bp, expr);
 503
 504   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 505     unpack_ts_real_cst_value_fields (&bp, expr);
 506
 507   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 508     unpack_ts_fixed_cst_value_fields (&bp, expr);
 509
 510   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 511     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 512
 513   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 514     unpack_ts_decl_common_value_fields (&bp, expr);
 515
 516   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 517     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 518
 519   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 520     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 521
 522   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 523     unpack_ts_function_decl_value_fields (&bp, expr);
 524
 525   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 526     unpack_ts_type_common_value_fields (&bp, expr);
 527
 528   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 529     {
 530       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 531       if (code == MEM_REF
 532           || code == TARGET_MEM_REF)
 533         {
 534           MR_DEPENDENCE_CLIQUE (expr)
 535             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 536           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 537             MR_DEPENDENCE_BASE (expr)
 538               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 539         }
 540     }
 541
 542   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 543     unpack_ts_block_value_fields (data_in, &bp, expr);
 544
 545   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 546     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 547
 548   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 549     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 550
 551   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 552     {
 553       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 554       if (length > 0)
 555         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 556     }
 557
 558   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 559     {
 560       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 561       if (length > 0)
 562         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 563     }
 564
 565 #ifndef ACCEL_COMPILER
 566   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 567     {
 568       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 569       if (targetm.target_option.post_stream_in)
 570         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 571     }
 572 #endif
 573
 574   if (code == OMP_CLAUSE)
 575     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 576 }
 577
 578
 579 /* Materialize a new tree from input block IB using descriptors in
 580    DATA_IN.  The code for the new tree should match TAG.  Store in
 581    *IX_P the index into the reader cache where the new tree is stored.  */
 582
 583 tree
 584 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 585                      enum LTO_tags tag)
 586 {
 587   enum tree_code code;
 588   tree result;
 589 #ifdef LTO_STREAMER_DEBUG
 590   HOST_WIDE_INT orig_address_in_writer;
 591 #endif
 592
 593   result = NULL_TREE;
 594
 595 #ifdef LTO_STREAMER_DEBUG
 596   /* Read the word representing the memory address for the tree
 597      as it was written by the writer.  This is useful when
 598      debugging differences between the writer and reader.  */
 599   orig_address_in_writer = streamer_read_hwi (ib);
 600   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 601 #endif
 602
 603   code = lto_tag_to_tree_code (tag);
 604
 605   /* We should never see an SSA_NAME tree.  Only the version numbers of
 606      SSA names are ever written out.  See input_ssa_names.  */
 607   gcc_assert (code != SSA_NAME);
 608
 609   /* Instantiate a new tree using the header data.  */
 610   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 611     result = streamer_read_string_cst (data_in, ib);
 612   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 613     result = input_identifier (data_in, ib);
 614   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 615     {
 616       HOST_WIDE_INT len = streamer_read_hwi (ib);
 617       result = make_tree_vec (len);
 618     }
 619   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 620     {
 621       HOST_WIDE_INT len = streamer_read_hwi (ib);
 622       result = make_vector (len);
 623     }
 624   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 625     {
 626       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 627       result = make_tree_binfo (len);
 628     }
 629   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 630     {
 631       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 632       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 633       result = make_int_cst (len, ext_len);
 634     }
 635   else if (code == CALL_EXPR)
 636     {
 637       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 638       return build_vl_exp (CALL_EXPR, nargs + 3);
 639     }
 640   else if (code == OMP_CLAUSE)
 641     {
 642       enum omp_clause_code subcode
 643         = (enum omp_clause_code) streamer_read_uhwi (ib);
 644       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 645     }
 646   else
 647     {
 648       /* For all other nodes, materialize the tree with a raw
 649          make_node call.  */
 650       result = make_node (code);
 651     }
 652
 653 #ifdef LTO_STREAMER_DEBUG
 654   /* Store the original address of the tree as seen by the writer
 655      in RESULT's aux field.  This is useful when debugging streaming
 656      problems.  This way, a debugging session can be started on
 657      both writer and reader with a breakpoint using this address
 658      value in both.  */
 659   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 660 #endif
 661
 662   return result;
 663 }
 664
 665
 666 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 667    block IB.  DATA_IN contains tables and descriptors for the
 668    file being read.  */
 669
 670
 671 static void
 672 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 673                                    struct data_in *data_in, tree expr)
 674 {
 675   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 676     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 677 }
 678
 679
 680 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 681    block IB.  DATA_IN contains tables and descriptors for the
 682    file being read.  */
 683
 684 static void
 685 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 686                                    struct data_in *data_in, tree expr)
 687 {
 688   unsigned i;
 689   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 690     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 691 }
 692
 693
 694 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 695    block IB.  DATA_IN contains tables and descriptors for the
 696    file being read.  */
 697
 698 static void
 699 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 700                                     struct data_in *data_in, tree expr)
 701 {
 702   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 703   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 704 }
 705
 706
 707 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 708    from input block IB.  DATA_IN contains tables and descriptors for the
 709    file being read.  */
 710
 711 static void
 712 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 713                                          struct data_in *data_in, tree expr)
 714 {
 715   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 716   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 717 }
 718
 719
 720 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 721    input block IB.  DATA_IN contains tables and descriptors for the
 722    file being read.  */
 723
 724 static void
 725 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 726                                         struct data_in *data_in, tree expr)
 727 {
 728   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 729   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 730   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 731
 732   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 733      for early inlining so drop it on the floor instead of ICEing in
 734      dwarf2out.c.  */
 735
 736   if ((TREE_CODE (expr) == VAR_DECL
 737        || TREE_CODE (expr) == PARM_DECL)
 738       && DECL_HAS_VALUE_EXPR_P (expr))
 739     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 740
 741   if (TREE_CODE (expr) == VAR_DECL)
 742     {
 743       tree dexpr = stream_read_tree (ib, data_in);
 744       if (dexpr)
 745         SET_DECL_DEBUG_EXPR (expr, dexpr);
 746     }
 747 }
 748
 749
 750 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 751    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 752    file being read.  */
 753
 754 static void
 755 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 756                                             struct data_in *data_in, tree expr)
 757 {
 758   if (TREE_CODE (expr) == TYPE_DECL)
 759     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 760 }
 761
 762
 763 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 764    from input block IB.  DATA_IN contains tables and descriptors for the
 765    file being read.  */
 766
 767 static void
 768 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 769                                           struct data_in *data_in, tree expr)
 770 {
 771   tree id;
 772
 773   id = stream_read_tree (ib, data_in);
 774   if (id)
 775     {
 776       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 777       SET_DECL_ASSEMBLER_NAME (expr, id);
 778     }
 779 }
 780
 781
 782 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 783    input block IB.  DATA_IN contains tables and descriptors for the
 784    file being read.  */
 785
 786 static void
 787 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 788                                        struct data_in *data_in, tree expr)
 789 {
 790   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 791   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 792   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 793   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 794   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 795 }
 796
 797
 798 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 799    from input block IB.  DATA_IN contains tables and descriptors for the
 800    file being read.  */
 801
 802 static void
 803 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 804                                           struct data_in *data_in, tree expr)
 805 {
 806   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 807   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 808   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 809 #ifndef ACCEL_COMPILER
 810   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 811 #endif
 812   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 813
 814   /* If the file contains a function with an EH personality set,
 815      then it was compiled with -fexceptions.  In that case, initialize
 816      the backend EH machinery.  */
 817   if (DECL_FUNCTION_PERSONALITY (expr))
 818     lto_init_eh ();
 819 }
 820
 821
 822 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 823    input block IB.  DATA_IN contains tables and descriptors for the file
 824    being read.  */
 825
 826 static void
 827 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 828                                         struct data_in *data_in, tree expr)
 829 {
 830   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 831   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 832   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 833   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 834   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 835      reconstructed during fixup.  */
 836   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 837      during fixup.  */
 838   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 839   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 840   /* TYPE_CANONICAL gets re-computed during type merging.  */
 841   TYPE_CANONICAL (expr) = NULL_TREE;
 842   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 843 }
 844
 845 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 846    from input block IB.  DATA_IN contains tables and descriptors for the
 847    file being read.  */
 848
 849 static void
 850 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 851                                             struct data_in *data_in,
 852                                             tree expr)
 853 {
 854   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 855     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 856   else if (TREE_CODE (expr) == ARRAY_TYPE)
 857     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 858   else if (RECORD_OR_UNION_TYPE_P (expr))
 859     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 860   else if (TREE_CODE (expr) == FUNCTION_TYPE
 861            || TREE_CODE (expr) == METHOD_TYPE)
 862     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 863
 864   if (!POINTER_TYPE_P (expr))
 865     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 866   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 867   if (RECORD_OR_UNION_TYPE_P (expr))
 868     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 869 }
 870
 871
 872 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 873    block IB.  DATA_IN contains tables and descriptors for the
 874    file being read.  */
 875
 876 static void
 877 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 878                                  struct data_in *data_in, tree expr)
 879 {
 880   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 881   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 882   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 883 }
 884
 885
 886 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 887    block IB.  DATA_IN contains tables and descriptors for the
 888    file being read.  */
 889
 890 static void
 891 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 892                                 struct data_in *data_in, tree expr)
 893 {
 894   int i;
 895
 896   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 897      instantiate EXPR.  */
 898   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 899     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 900 }
 901
 902
 903 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 904    block IB.  DATA_IN contains tables and descriptors for the
 905    file being read.  */
 906
 907
 908 static void
 909 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 910                                 struct data_in *data_in, tree expr)
 911 {
 912   int i;
 913   tree block;
 914
 915   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 916     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 917
 918   block = stream_read_tree (ib, data_in);
 919
 920   /* TODO: Block is stored in the locus information.  It may make more sense to
 921      to make it go via the location cache.  */
 922   if (block)
 923     {
 924       data_in->location_cache.apply_location_cache ();
 925       TREE_SET_BLOCK (expr, block);
 926     }
 927 }
 928
 929
 930 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 931    block IB.  DATA_IN contains tables and descriptors for the
 932    file being read.  */
 933
 934 static void
 935 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 936                                   struct data_in *data_in, tree expr)
 937 {
 938   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 939
 940   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 941
 942   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 943      the limited cases we can handle - those that represent inlined
 944      function scopes.  For the rest them on the floor instead of ICEing in
 945      dwarf2out.c.  */
 946   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 947   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 948      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 949      dwarf2out.c.  */
 950
 951   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 952      streaming time.  */
 953
 954   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 955      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 956      stream the child relationship explicitly.  */
 957   if (BLOCK_SUPERCONTEXT (expr)
 958       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 959     {
 960       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 961       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 962     }
 963
 964   /* The global block is rooted at the TU decl.  Hook it here to
 965      avoid the need to stream in this block during WPA time.  */
 966   else if (BLOCK_SUPERCONTEXT (expr)
 967            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 968     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 969
 970   /* The function-level block is connected at the time we read in
 971      function bodies for the same reason.  */
 972 }
 973
 974
 975 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 976    block IB.  DATA_IN contains tables and descriptors for the
 977    file being read.  */
 978
 979 static void
 980 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 981                                   struct data_in *data_in, tree expr)
 982 {
 983   unsigned i;
 984   tree t;
 985
 986   /* Note that the number of slots in EXPR was read in
 987      streamer_alloc_tree when instantiating EXPR.  However, the
 988      vector is empty so we cannot rely on vec::length to know how many
 989      elements to read.  So, this list is emitted as a 0-terminated
 990      list on the writer side.  */
 991   do
 992     {
 993       t = stream_read_tree (ib, data_in);
 994       if (t)
 995         BINFO_BASE_BINFOS (expr)->quick_push (t);
 996     }
 997   while (t);
 998
 999   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
1000   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
1001   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
1002
1003   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
1004      unpacking the bitfield section.  */
1005   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
1006     {
1007       tree a = stream_read_tree (ib, data_in);
1008       (*BINFO_BASE_ACCESSES (expr))[i] = a;
1009     }
1010   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
1011      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
1012 }
1013
1014
1015 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1016    input block IB.  DATA_IN contains tables and descriptors for the
1017    file being read.  */
1018
1019 static void
1020 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1021                                         struct data_in *data_in, tree expr)
1022 {
1023   unsigned i;
1024
1025   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1026     {
1027       constructor_elt e;
1028       e.index = stream_read_tree (ib, data_in);
1029       e.value = stream_read_tree (ib, data_in);
1030       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1031     }
1032 }
1033
1034
1035 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1036    input block IB.  DATA_IN contains tables and descriptors for the
1037    file being read.  */
1038
1039 static void
1040 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1041                                        struct data_in *data_in, tree expr)
1042 {
1043   int i;
1044
1045   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1046     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1047   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1048 }
1049
1050
1051 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1052    contains tables and descriptors for the file being read.  */
1053
1054 void
1055 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1056                          tree expr)
1057 {
1058   enum tree_code code;
1059
1060   code = TREE_CODE (expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1063     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1066     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1069     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1072     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1075     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1078     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1079
1080   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1081     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1082
1083   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1084     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1085
1086   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1087     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1088
1089   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1090     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1091
1092   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1093     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1094
1095   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1096     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1097
1098   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1099     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1100
1101   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1102     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1103
1104   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1105     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1106
1107   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1108     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1109
1110   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1111     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1112
1113   if (code == OMP_CLAUSE)
1114     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1115 }
1116
1117
1118 /* Read an index IX from input block IB and return the tree node at
1119    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1120
1121 tree
1122 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1123 {
1124   unsigned HOST_WIDE_INT ix;
1125   tree result;
1126   enum LTO_tags expected_tag;
1127
1128   ix = streamer_read_uhwi (ib);
1129   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1130
1131   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1132   gcc_assert (result
1133               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1134
1135   return result;
1136 }
1137
1138
1139 /* Read a code and class from input block IB and return the
1140    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1141
1142 tree
1143 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1144 {
1145   enum built_in_class fclass;
1146   enum built_in_function fcode;
1147   const char *asmname;
1148   tree result;
1149
1150   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1151   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1152
1153   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1154
1155   if (fclass == BUILT_IN_NORMAL)
1156     {
1157       if (fcode >= END_BUILTINS)
1158         fatal_error (input_location,
1159                      "machine independent builtin code out of range");
1160       result = builtin_decl_explicit (fcode);
1161       if (!result
1162           && fcode > BEGIN_CHKP_BUILTINS
1163           && fcode < END_CHKP_BUILTINS)
1164         {
1165           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1166           result = builtin_decl_explicit (fcode);
1167           result = chkp_maybe_clone_builtin_fndecl (result);
1168         }
1169       gcc_assert (result);
1170     }
1171   else if (fclass == BUILT_IN_MD)
1172     {
1173       result = targetm.builtin_decl (fcode, true);
1174       if (!result || result == error_mark_node)
1175         fatal_error (input_location, "target specific builtin not available");
1176     }
1177   else
1178     gcc_unreachable ();
1179
1180   asmname = streamer_read_string (data_in, ib);
1181   if (asmname)
1182     set_builtin_user_assembler_name (result, asmname);
1183
1184   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1185
1186   return result;
1187 }