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 "input.h"
  27 #include "alias.h"
  28 #include "symtab.h"
  29 #include "options.h"
  30 #include "tree.h"
  31 #include "fold-const.h"
  32 #include "stringpool.h"
  33 #include "predict.h"
  34 #include "tm.h"
  35 #include "hard-reg-set.h"
  36 #include "input.h"
  37 #include "function.h"
  38 #include "basic-block.h"
  39 #include "tree-ssa-alias.h"
  40 #include "internal-fn.h"
  41 #include "gimple-expr.h"
  42 #include "is-a.h"
  43 #include "gimple.h"
  44 #include "plugin-api.h"
  45 #include "ipa-ref.h"
  46 #include "cgraph.h"
  47 #include "tree-streamer.h"
  48 #include "data-streamer.h"
  49 #include "streamer-hooks.h"
  50 #include "lto-streamer.h"
  51 #include "builtins.h"
  52 #include "ipa-chkp.h"
  53 #include "gomp-constants.h"
  54
  55
  56 /* Read a STRING_CST from the string table in DATA_IN using input
  57    block IB.  */
  58
  59 tree
  60 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  61 {
  62   unsigned int len;
  63   const char * ptr;
  64
  65   ptr = streamer_read_indexed_string (data_in, ib, &len);
  66   if (!ptr)
  67     return NULL;
  68   return build_string (len, ptr);
  69 }
  70
  71
  72 /* Read an IDENTIFIER from the string table in DATA_IN using input
  73    block IB.  */
  74
  75 static tree
  76 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  77 {
  78   unsigned int len;
  79   const char *ptr;
  80
  81   ptr = streamer_read_indexed_string (data_in, ib, &len);
  82   if (!ptr)
  83     return NULL;
  84   return get_identifier_with_length (ptr, len);
  85 }
  86
  87
  88 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  89    tables and descriptors for the file being read.  */
  90
  91 tree
  92 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  93 {
  94   tree first, prev, curr;
  95
  96   /* The chain is written as NULL terminated list of trees.  */
  97   first = prev = NULL_TREE;
  98   do
  99     {
 100       curr = stream_read_tree (ib, data_in);
 101       if (prev)
 102         TREE_CHAIN (prev) = curr;
 103       else
 104         first = curr;
 105
 106       prev = curr;
 107     }
 108   while (curr);
 109
 110   return first;
 111 }
 112
 113
 114 /* Unpack all the non-pointer fields of the TS_BASE structure of
 115    expression EXPR from bitpack BP.  */
 116
 117 static inline void
 118 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 119 {
 120   /* Note that the code for EXPR has already been unpacked to create EXPR in
 121      streamer_alloc_tree.  */
 122   if (!TYPE_P (expr))
 123     {
 124       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 125       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 126       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 127
 128       /* TREE_PUBLIC is used on types to indicate that the type
 129          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 130          so we skip it here.  */
 131       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 132     }
 133   else
 134     bp_unpack_value (bp, 4);
 135   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   if (DECL_P (expr))
 138     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 139   else if (TYPE_P (expr))
 140     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 141   else
 142     bp_unpack_value (bp, 1);
 143   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 144   if (TYPE_P (expr))
 145     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 146   else
 147     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 148   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 149   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 150   if (TREE_CODE (expr) != TREE_BINFO)
 151     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 152   else
 153     bp_unpack_value (bp, 1);
 154   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 155   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 156   if (TYPE_P (expr))
 157     {
 158       if (AGGREGATE_TYPE_P (expr))
 159         TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 160       else
 161         TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 162       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 163     }
 164   else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
 165     REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 166   else if (TREE_CODE (expr) == SSA_NAME)
 167     {
 168       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 169       bp_unpack_value (bp, 8);
 170     }
 171   else
 172     bp_unpack_value (bp, 9);
 173 }
 174
 175
 176 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 177    expression EXPR from bitpack BP.  */
 178
 179 static void
 180 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 181 {
 182   int i;
 183   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 184     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 185 }
 186
 187
 188 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 189    expression EXPR from bitpack BP.  */
 190
 191 static void
 192 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 193 {
 194   unsigned i;
 195   REAL_VALUE_TYPE r;
 196   REAL_VALUE_TYPE *rp;
 197
 198   /* Clear all bits of the real value type so that we can later do
 199      bitwise comparisons to see if two values are the same.  */
 200   memset (&r, 0, sizeof r);
 201   r.cl = (unsigned) bp_unpack_value (bp, 2);
 202   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 203   r.sign = (unsigned) bp_unpack_value (bp, 1);
 204   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 205   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 206   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 207   for (i = 0; i < SIGSZ; i++)
 208     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 209
 210   rp = ggc_alloc<real_value> ();
 211   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 212   TREE_REAL_CST_PTR (expr) = rp;
 213 }
 214
 215
 216 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 217    expression EXPR from bitpack BP.  */
 218
 219 static void
 220 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 221 {
 222   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 223   fp->mode = bp_unpack_machine_mode (bp);
 224   fp->data.low = bp_unpack_var_len_int (bp);
 225   fp->data.high = bp_unpack_var_len_int (bp);
 226   TREE_FIXED_CST_PTR (expr) = fp;
 227 }
 228
 229 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 230    of expression EXPR from bitpack BP.  */
 231
 232 static void
 233 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 234 {
 235   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 236   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 237   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 238   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 239   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 240   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 241   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 242   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 243   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 244   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 245   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 246 #ifdef ACCEL_COMPILER
 247   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 248     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 249 #endif
 250   if (TREE_CODE (expr) == LABEL_DECL)
 251     {
 252       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 253
 254       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 255          force gimple_set_bb to recreate label_to_block_map.  */
 256       LABEL_DECL_UID (expr) = -1;
 257     }
 258
 259   if (TREE_CODE (expr) == FIELD_DECL)
 260     {
 261       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 262       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 263       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 264     }
 265
 266   if (TREE_CODE (expr) == VAR_DECL)
 267     {
 268       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 269       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 270     }
 271
 272   if (TREE_CODE (expr) == RESULT_DECL
 273       || TREE_CODE (expr) == PARM_DECL
 274       || TREE_CODE (expr) == VAR_DECL)
 275     {
 276       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 277       if (TREE_CODE (expr) == VAR_DECL
 278           || TREE_CODE (expr) == PARM_DECL)
 279         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 280     }
 281 }
 282
 283
 284 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 285    of expression EXPR from bitpack BP.  */
 286
 287 static void
 288 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 289 {
 290   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 291 }
 292
 293
 294 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 295    of expression EXPR from bitpack BP.  */
 296
 297 static void
 298 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 299 {
 300   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 301   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 302   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 303   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 304   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 305   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 306   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 307
 308   if (TREE_CODE (expr) == VAR_DECL)
 309     {
 310       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 311       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 312     }
 313
 314   if (TREE_CODE (expr) == FUNCTION_DECL)
 315     {
 316       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 317       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 318       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 319     }
 320 }
 321
 322
 323 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 324    of expression EXPR from bitpack BP.  */
 325
 326 static void
 327 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 328 {
 329   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 330                                                BUILT_IN_LAST);
 331   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 339   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 340   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 341   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 342   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 343                         = (unsigned) bp_unpack_value (bp, 1);
 344   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 345   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 346   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 347   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 348   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 349     {
 350       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 351                                                                             12);
 352       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 353           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 354         fatal_error (input_location,
 355                      "machine independent builtin code out of range");
 356       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 357         {
 358           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 359           if (!result || result == error_mark_node)
 360             fatal_error (input_location,
 361                          "target specific builtin not available");
 362         }
 363     }
 364 }
 365
 366
 367 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 368    of expression EXPR from bitpack BP.  */
 369
 370 static void
 371 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 372 {
 373   machine_mode mode;
 374
 375   mode = bp_unpack_machine_mode (bp);
 376   SET_TYPE_MODE (expr, mode);
 377   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 378   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 379   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 380   if (RECORD_OR_UNION_TYPE_P (expr))
 381     {
 382       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 383       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 384     }
 385   else if (TREE_CODE (expr) == ARRAY_TYPE)
 386     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 387   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 388   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 389   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 390   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 391   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 392   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 393 #ifdef ACCEL_COMPILER
 394   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 395     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 396 #endif
 397   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 398 }
 399
 400
 401 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 402    of expression EXPR from bitpack BP.  */
 403
 404 static void
 405 unpack_ts_block_value_fields (struct data_in *data_in,
 406                               struct bitpack_d *bp, tree expr)
 407 {
 408   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 409   /* BLOCK_NUMBER is recomputed.  */
 410   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 411 }
 412
 413 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 414    structure of expression EXPR from bitpack BP.  */
 415
 416 static void
 417 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 418                                               struct bitpack_d *bp, tree expr)
 419 {
 420   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 421   vec_safe_push (all_translation_units, expr);
 422 }
 423
 424
 425 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 426    structure of expression EXPR from bitpack BP.  */
 427
 428 static void
 429 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 430                                    struct bitpack_d *bp, tree expr)
 431 {
 432   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 433   switch (OMP_CLAUSE_CODE (expr))
 434     {
 435     case OMP_CLAUSE_DEFAULT:
 436       OMP_CLAUSE_DEFAULT_KIND (expr)
 437         = bp_unpack_enum (bp, omp_clause_default_kind,
 438                           OMP_CLAUSE_DEFAULT_LAST);
 439       break;
 440     case OMP_CLAUSE_SCHEDULE:
 441       OMP_CLAUSE_SCHEDULE_KIND (expr)
 442         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 443                           OMP_CLAUSE_SCHEDULE_LAST);
 444       break;
 445     case OMP_CLAUSE_DEPEND:
 446       OMP_CLAUSE_DEPEND_KIND (expr)
 447         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 448       break;
 449     case OMP_CLAUSE_MAP:
 450       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 451                                                      GOMP_MAP_LAST));
 452       break;
 453     case OMP_CLAUSE_PROC_BIND:
 454       OMP_CLAUSE_PROC_BIND_KIND (expr)
 455         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 456                           OMP_CLAUSE_PROC_BIND_LAST);
 457       break;
 458     case OMP_CLAUSE_REDUCTION:
 459       OMP_CLAUSE_REDUCTION_CODE (expr)
 460         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 461       break;
 462     default:
 463       break;
 464     }
 465 }
 466
 467
 468 /* Read all the language-independent bitfield values for EXPR from IB.
 469    Return the partially unpacked bitpack so the caller can unpack any other
 470    bitfield values that the writer may have written.  */
 471
 472 void
 473 streamer_read_tree_bitfields (struct lto_input_block *ib,
 474                               struct data_in *data_in, tree expr)
 475 {
 476   enum tree_code code;
 477   struct bitpack_d bp;
 478
 479   /* Read the bitpack of non-pointer values from IB.  */
 480   bp = streamer_read_bitpack (ib);
 481
 482   /* The first word in BP contains the code of the tree that we
 483      are about to read.  */
 484   code = (enum tree_code) bp_unpack_value (&bp, 16);
 485   lto_tag_check (lto_tree_code_to_tag (code),
 486                  lto_tree_code_to_tag (TREE_CODE (expr)));
 487
 488   /* Note that all these functions are highly sensitive to changes in
 489      the types and sizes of each of the fields being packed.  */
 490   unpack_ts_base_value_fields (&bp, expr);
 491
 492   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 493     unpack_ts_int_cst_value_fields (&bp, expr);
 494
 495   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 496     unpack_ts_real_cst_value_fields (&bp, expr);
 497
 498   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 499     unpack_ts_fixed_cst_value_fields (&bp, expr);
 500
 501   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 502     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 503
 504   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 505     unpack_ts_decl_common_value_fields (&bp, expr);
 506
 507   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 508     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 509
 510   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 511     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 512
 513   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 514     unpack_ts_function_decl_value_fields (&bp, expr);
 515
 516   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 517     unpack_ts_type_common_value_fields (&bp, expr);
 518
 519   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 520     {
 521       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 522       if (code == MEM_REF
 523           || code == TARGET_MEM_REF)
 524         {
 525           MR_DEPENDENCE_CLIQUE (expr)
 526             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 527           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 528             MR_DEPENDENCE_BASE (expr)
 529               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 530         }
 531     }
 532
 533   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 534     unpack_ts_block_value_fields (data_in, &bp, expr);
 535
 536   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 537     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 538
 539   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 540     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 541
 542   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 543     {
 544       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 545       if (length > 0)
 546         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 547     }
 548
 549   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 550     {
 551       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 552       if (length > 0)
 553         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 554     }
 555
 556 #ifndef ACCEL_COMPILER
 557   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 558     {
 559       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 560       if (targetm.target_option.post_stream_in)
 561         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 562     }
 563 #endif
 564
 565   if (code == OMP_CLAUSE)
 566     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 567 }
 568
 569
 570 /* Materialize a new tree from input block IB using descriptors in
 571    DATA_IN.  The code for the new tree should match TAG.  Store in
 572    *IX_P the index into the reader cache where the new tree is stored.  */
 573
 574 tree
 575 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 576                      enum LTO_tags tag)
 577 {
 578   enum tree_code code;
 579   tree result;
 580 #ifdef LTO_STREAMER_DEBUG
 581   HOST_WIDE_INT orig_address_in_writer;
 582 #endif
 583
 584   result = NULL_TREE;
 585
 586 #ifdef LTO_STREAMER_DEBUG
 587   /* Read the word representing the memory address for the tree
 588      as it was written by the writer.  This is useful when
 589      debugging differences between the writer and reader.  */
 590   orig_address_in_writer = streamer_read_hwi (ib);
 591   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 592 #endif
 593
 594   code = lto_tag_to_tree_code (tag);
 595
 596   /* We should never see an SSA_NAME tree.  Only the version numbers of
 597      SSA names are ever written out.  See input_ssa_names.  */
 598   gcc_assert (code != SSA_NAME);
 599
 600   /* Instantiate a new tree using the header data.  */
 601   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 602     result = streamer_read_string_cst (data_in, ib);
 603   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 604     result = input_identifier (data_in, ib);
 605   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 606     {
 607       HOST_WIDE_INT len = streamer_read_hwi (ib);
 608       result = make_tree_vec (len);
 609     }
 610   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 611     {
 612       HOST_WIDE_INT len = streamer_read_hwi (ib);
 613       result = make_vector (len);
 614     }
 615   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 616     {
 617       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 618       result = make_tree_binfo (len);
 619     }
 620   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 621     {
 622       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 623       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 624       result = make_int_cst (len, ext_len);
 625     }
 626   else if (code == CALL_EXPR)
 627     {
 628       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 629       return build_vl_exp (CALL_EXPR, nargs + 3);
 630     }
 631   else if (code == OMP_CLAUSE)
 632     {
 633       enum omp_clause_code subcode
 634         = (enum omp_clause_code) streamer_read_uhwi (ib);
 635       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 636     }
 637   else
 638     {
 639       /* For all other nodes, materialize the tree with a raw
 640          make_node call.  */
 641       result = make_node (code);
 642     }
 643
 644 #ifdef LTO_STREAMER_DEBUG
 645   /* Store the original address of the tree as seen by the writer
 646      in RESULT's aux field.  This is useful when debugging streaming
 647      problems.  This way, a debugging session can be started on
 648      both writer and reader with a breakpoint using this address
 649      value in both.  */
 650   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 651 #endif
 652
 653   return result;
 654 }
 655
 656
 657 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 658    block IB.  DATA_IN contains tables and descriptors for the
 659    file being read.  */
 660
 661
 662 static void
 663 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 664                                    struct data_in *data_in, tree expr)
 665 {
 666   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 667     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 668 }
 669
 670
 671 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 672    block IB.  DATA_IN contains tables and descriptors for the
 673    file being read.  */
 674
 675 static void
 676 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 677                                    struct data_in *data_in, tree expr)
 678 {
 679   unsigned i;
 680   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 681     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 682 }
 683
 684
 685 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 686    block IB.  DATA_IN contains tables and descriptors for the
 687    file being read.  */
 688
 689 static void
 690 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 691                                     struct data_in *data_in, tree expr)
 692 {
 693   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 694   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 695 }
 696
 697
 698 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 699    from input block IB.  DATA_IN contains tables and descriptors for the
 700    file being read.  */
 701
 702 static void
 703 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 704                                          struct data_in *data_in, tree expr)
 705 {
 706   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 707   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 708 }
 709
 710
 711 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 712    input block IB.  DATA_IN contains tables and descriptors for the
 713    file being read.  */
 714
 715 static void
 716 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 717                                         struct data_in *data_in, tree expr)
 718 {
 719   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 720   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 721   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 722
 723   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 724      for early inlining so drop it on the floor instead of ICEing in
 725      dwarf2out.c.  */
 726
 727   if ((TREE_CODE (expr) == VAR_DECL
 728        || TREE_CODE (expr) == PARM_DECL)
 729       && DECL_HAS_VALUE_EXPR_P (expr))
 730     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 731
 732   if (TREE_CODE (expr) == VAR_DECL)
 733     {
 734       tree dexpr = stream_read_tree (ib, data_in);
 735       if (dexpr)
 736         SET_DECL_DEBUG_EXPR (expr, dexpr);
 737     }
 738 }
 739
 740
 741 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 742    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 743    file being read.  */
 744
 745 static void
 746 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 747                                             struct data_in *data_in, tree expr)
 748 {
 749   if (TREE_CODE (expr) == TYPE_DECL)
 750     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 751 }
 752
 753
 754 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 755    from input block IB.  DATA_IN contains tables and descriptors for the
 756    file being read.  */
 757
 758 static void
 759 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 760                                           struct data_in *data_in, tree expr)
 761 {
 762   tree id;
 763
 764   id = stream_read_tree (ib, data_in);
 765   if (id)
 766     {
 767       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 768       SET_DECL_ASSEMBLER_NAME (expr, id);
 769     }
 770 }
 771
 772
 773 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 774    input block IB.  DATA_IN contains tables and descriptors for the
 775    file being read.  */
 776
 777 static void
 778 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 779                                        struct data_in *data_in, tree expr)
 780 {
 781   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 782   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 783   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 784   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 785   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 786 }
 787
 788
 789 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 790    from input block IB.  DATA_IN contains tables and descriptors for the
 791    file being read.  */
 792
 793 static void
 794 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 795                                           struct data_in *data_in, tree expr)
 796 {
 797   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 798   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 799   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 800 #ifndef ACCEL_COMPILER
 801   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 802 #endif
 803   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 804
 805   /* If the file contains a function with an EH personality set,
 806      then it was compiled with -fexceptions.  In that case, initialize
 807      the backend EH machinery.  */
 808   if (DECL_FUNCTION_PERSONALITY (expr))
 809     lto_init_eh ();
 810 }
 811
 812
 813 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 814    input block IB.  DATA_IN contains tables and descriptors for the file
 815    being read.  */
 816
 817 static void
 818 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 819                                         struct data_in *data_in, tree expr)
 820 {
 821   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 822   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 823   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 824   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 825   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 826      reconstructed during fixup.  */
 827   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 828      during fixup.  */
 829   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 830   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 831   /* TYPE_CANONICAL gets re-computed during type merging.  */
 832   TYPE_CANONICAL (expr) = NULL_TREE;
 833   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 834 }
 835
 836 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 837    from input block IB.  DATA_IN contains tables and descriptors for the
 838    file being read.  */
 839
 840 static void
 841 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 842                                             struct data_in *data_in,
 843                                             tree expr)
 844 {
 845   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 846     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 847   else if (TREE_CODE (expr) == ARRAY_TYPE)
 848     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 849   else if (RECORD_OR_UNION_TYPE_P (expr))
 850     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 851   else if (TREE_CODE (expr) == FUNCTION_TYPE
 852            || TREE_CODE (expr) == METHOD_TYPE)
 853     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 854
 855   if (!POINTER_TYPE_P (expr))
 856     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 857   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 858   if (RECORD_OR_UNION_TYPE_P (expr))
 859     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 860 }
 861
 862
 863 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 864    block IB.  DATA_IN contains tables and descriptors for the
 865    file being read.  */
 866
 867 static void
 868 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 869                                  struct data_in *data_in, tree expr)
 870 {
 871   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 872   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 873   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 874 }
 875
 876
 877 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 878    block IB.  DATA_IN contains tables and descriptors for the
 879    file being read.  */
 880
 881 static void
 882 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 883                                 struct data_in *data_in, tree expr)
 884 {
 885   int i;
 886
 887   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 888      instantiate EXPR.  */
 889   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 890     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 891 }
 892
 893
 894 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 895    block IB.  DATA_IN contains tables and descriptors for the
 896    file being read.  */
 897
 898
 899 static void
 900 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 901                                 struct data_in *data_in, tree expr)
 902 {
 903   int i;
 904   tree block;
 905
 906   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 907     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 908
 909   block = stream_read_tree (ib, data_in);
 910
 911   /* TODO: Block is stored in the locus information.  It may make more sense to
 912      to make it go via the location cache.  */
 913   if (block)
 914     {
 915       data_in->location_cache.apply_location_cache ();
 916       TREE_SET_BLOCK (expr, block);
 917     }
 918 }
 919
 920
 921 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 922    block IB.  DATA_IN contains tables and descriptors for the
 923    file being read.  */
 924
 925 static void
 926 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 927                                   struct data_in *data_in, tree expr)
 928 {
 929   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 930
 931   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 932
 933   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 934      the limited cases we can handle - those that represent inlined
 935      function scopes.  For the rest them on the floor instead of ICEing in
 936      dwarf2out.c.  */
 937   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 938   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 939      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 940      dwarf2out.c.  */
 941
 942   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 943      streaming time.  */
 944
 945   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 946      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 947      stream the child relationship explicitly.  */
 948   if (BLOCK_SUPERCONTEXT (expr)
 949       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 950     {
 951       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 952       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 953     }
 954
 955   /* The global block is rooted at the TU decl.  Hook it here to
 956      avoid the need to stream in this block during WPA time.  */
 957   else if (BLOCK_SUPERCONTEXT (expr)
 958            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 959     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 960
 961   /* The function-level block is connected at the time we read in
 962      function bodies for the same reason.  */
 963 }
 964
 965
 966 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 967    block IB.  DATA_IN contains tables and descriptors for the
 968    file being read.  */
 969
 970 static void
 971 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 972                                   struct data_in *data_in, tree expr)
 973 {
 974   unsigned i;
 975   tree t;
 976
 977   /* Note that the number of slots in EXPR was read in
 978      streamer_alloc_tree when instantiating EXPR.  However, the
 979      vector is empty so we cannot rely on vec::length to know how many
 980      elements to read.  So, this list is emitted as a 0-terminated
 981      list on the writer side.  */
 982   do
 983     {
 984       t = stream_read_tree (ib, data_in);
 985       if (t)
 986         BINFO_BASE_BINFOS (expr)->quick_push (t);
 987     }
 988   while (t);
 989
 990   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 991   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 992   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 993
 994   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 995      unpacking the bitfield section.  */
 996   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 997     {
 998       tree a = stream_read_tree (ib, data_in);
 999       (*BINFO_BASE_ACCESSES (expr))[i] = a;
1000     }
1001   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
1002      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
1003 }
1004
1005
1006 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1007    input block IB.  DATA_IN contains tables and descriptors for the
1008    file being read.  */
1009
1010 static void
1011 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1012                                         struct data_in *data_in, tree expr)
1013 {
1014   unsigned i;
1015
1016   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1017     {
1018       constructor_elt e;
1019       e.index = stream_read_tree (ib, data_in);
1020       e.value = stream_read_tree (ib, data_in);
1021       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1022     }
1023 }
1024
1025
1026 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1027    input block IB.  DATA_IN contains tables and descriptors for the
1028    file being read.  */
1029
1030 static void
1031 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1032                                        struct data_in *data_in, tree expr)
1033 {
1034   int i;
1035
1036   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1037     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1038   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1039 }
1040
1041
1042 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1043    contains tables and descriptors for the file being read.  */
1044
1045 void
1046 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1047                          tree expr)
1048 {
1049   enum tree_code code;
1050
1051   code = TREE_CODE (expr);
1052
1053   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1054     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1057     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1060     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1063     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1066     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1069     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1072     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1075     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1078     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1079
1080   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1081     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1082
1083   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1084     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1085
1086   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1087     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1088
1089   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1090     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1091
1092   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1093     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1094
1095   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1096     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1097
1098   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1099     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1100
1101   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1102     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1103
1104   if (code == OMP_CLAUSE)
1105     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1106 }
1107
1108
1109 /* Read an index IX from input block IB and return the tree node at
1110    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1111
1112 tree
1113 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1114 {
1115   unsigned HOST_WIDE_INT ix;
1116   tree result;
1117   enum LTO_tags expected_tag;
1118
1119   ix = streamer_read_uhwi (ib);
1120   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1121
1122   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1123   gcc_assert (result
1124               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1125
1126   return result;
1127 }
1128
1129
1130 /* Read a code and class from input block IB and return the
1131    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1132
1133 tree
1134 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1135 {
1136   enum built_in_class fclass;
1137   enum built_in_function fcode;
1138   const char *asmname;
1139   tree result;
1140
1141   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1142   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1143
1144   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1145
1146   if (fclass == BUILT_IN_NORMAL)
1147     {
1148       if (fcode >= END_BUILTINS)
1149         fatal_error (input_location,
1150                      "machine independent builtin code out of range");
1151       result = builtin_decl_explicit (fcode);
1152       if (!result
1153           && fcode > BEGIN_CHKP_BUILTINS
1154           && fcode < END_CHKP_BUILTINS)
1155         {
1156           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1157           result = builtin_decl_explicit (fcode);
1158           result = chkp_maybe_clone_builtin_fndecl (result);
1159         }
1160       gcc_assert (result);
1161     }
1162   else if (fclass == BUILT_IN_MD)
1163     {
1164       result = targetm.builtin_decl (fcode, true);
1165       if (!result || result == error_mark_node)
1166         fatal_error (input_location, "target specific builtin not available");
1167     }
1168   else
1169     gcc_unreachable ();
1170
1171   asmname = streamer_read_string (data_in, ib);
1172   if (asmname)
1173     set_builtin_user_assembler_name (result, asmname);
1174
1175   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1176
1177   return result;
1178 }