gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2018 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 "backend.h"
  26 #include "target.h"
  27 #include "tree.h"
  28 #include "gimple.h"
  29 #include "stringpool.h"
  30 #include "tree-streamer.h"
  31 #include "cgraph.h"
  32 #include "builtins.h"
  33 #include "ipa-chkp.h"
  34 #include "gomp-constants.h"
  35 #include "stringpool.h"
  36 #include "attribs.h"
  37 #include "asan.h"
  38 #include "opts.h"
  39
  40
  41 /* Read a STRING_CST from the string table in DATA_IN using input
  42    block IB.  */
  43
  44 tree
  45 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  46 {
  47   unsigned int len;
  48   const char * ptr;
  49
  50   ptr = streamer_read_indexed_string (data_in, ib, &len);
  51   if (!ptr)
  52     return NULL;
  53   return build_string (len, ptr);
  54 }
  55
  56
  57 /* Read an IDENTIFIER from the string table in DATA_IN using input
  58    block IB.  */
  59
  60 static tree
  61 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  62 {
  63   unsigned int len;
  64   const char *ptr;
  65
  66   ptr = streamer_read_indexed_string (data_in, ib, &len);
  67   if (!ptr)
  68     return NULL;
  69   return get_identifier_with_length (ptr, len);
  70 }
  71
  72
  73 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  74    tables and descriptors for the file being read.  */
  75
  76 tree
  77 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  78 {
  79   tree first, prev, curr;
  80
  81   /* The chain is written as NULL terminated list of trees.  */
  82   first = prev = NULL_TREE;
  83   do
  84     {
  85       curr = stream_read_tree (ib, data_in);
  86       if (prev)
  87         TREE_CHAIN (prev) = curr;
  88       else
  89         first = curr;
  90
  91       prev = curr;
  92     }
  93   while (curr);
  94
  95   return first;
  96 }
  97
  98
  99 /* Unpack all the non-pointer fields of the TS_BASE structure of
 100    expression EXPR from bitpack BP.  */
 101
 102 static inline void
 103 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 104 {
 105   /* Note that the code for EXPR has already been unpacked to create EXPR in
 106      streamer_alloc_tree.  */
 107   if (!TYPE_P (expr))
 108     {
 109       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 110       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 111       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 112
 113       /* TREE_PUBLIC is used on types to indicate that the type
 114          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 115          so we skip it here.  */
 116       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 117     }
 118   else
 119     bp_unpack_value (bp, 4);
 120   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 121   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 122   if (DECL_P (expr))
 123     {
 124       DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 125       DECL_NAMELESS (expr) = (unsigned) bp_unpack_value (bp, 1);
 126     }
 127   else if (TYPE_P (expr))
 128     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 129   else
 130     bp_unpack_value (bp, 1);
 131   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 132   if (TYPE_P (expr))
 133     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 134   else
 135     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 138   if (TREE_CODE (expr) != TREE_BINFO)
 139     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 140   else
 141     bp_unpack_value (bp, 1);
 142   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 143   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 144   if (TYPE_P (expr))
 145     {
 146       if (AGGREGATE_TYPE_P (expr))
 147         TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 148       else
 149         TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 150       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 151     }
 152   else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
 153     {
 154       REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 155       bp_unpack_value (bp, 8);
 156     }
 157   else if (TREE_CODE (expr) == SSA_NAME)
 158     {
 159       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 160       bp_unpack_value (bp, 8);
 161     }
 162   else
 163     bp_unpack_value (bp, 9);
 164 }
 165
 166
 167 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 168    expression EXPR from bitpack BP.  */
 169
 170 static void
 171 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 172 {
 173   int i;
 174   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 175     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 176 }
 177
 178
 179 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 180    expression EXPR from bitpack BP.  */
 181
 182 static void
 183 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 184 {
 185   unsigned i;
 186   REAL_VALUE_TYPE r;
 187   REAL_VALUE_TYPE *rp;
 188
 189   /* Clear all bits of the real value type so that we can later do
 190      bitwise comparisons to see if two values are the same.  */
 191   memset (&r, 0, sizeof r);
 192   r.cl = (unsigned) bp_unpack_value (bp, 2);
 193   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 194   r.sign = (unsigned) bp_unpack_value (bp, 1);
 195   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 196   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 197   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 198   for (i = 0; i < SIGSZ; i++)
 199     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 200
 201   rp = ggc_alloc<real_value> ();
 202   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 203   TREE_REAL_CST_PTR (expr) = rp;
 204 }
 205
 206
 207 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 208    expression EXPR from bitpack BP.  */
 209
 210 static void
 211 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 212 {
 213   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 214   fp->mode = as_a <scalar_mode> (bp_unpack_machine_mode (bp));
 215   fp->data.low = bp_unpack_var_len_int (bp);
 216   fp->data.high = bp_unpack_var_len_int (bp);
 217   TREE_FIXED_CST_PTR (expr) = fp;
 218 }
 219
 220 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 221    of expression EXPR from bitpack BP.  */
 222
 223 static void
 224 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 225 {
 226   SET_DECL_MODE (expr, bp_unpack_machine_mode (bp));
 227   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 228   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 229   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 230   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 231   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 232   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 233   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 234   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 235   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 236   SET_DECL_ALIGN (expr, (unsigned) bp_unpack_var_len_unsigned (bp));
 237 #ifdef ACCEL_COMPILER
 238   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 239     SET_DECL_ALIGN (expr, targetm.absolute_biggest_alignment);
 240 #endif
 241   if (TREE_CODE (expr) == LABEL_DECL)
 242     {
 243       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 244
 245       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 246          force gimple_set_bb to recreate label_to_block_map.  */
 247       LABEL_DECL_UID (expr) = -1;
 248     }
 249
 250   if (TREE_CODE (expr) == FIELD_DECL)
 251     {
 252       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 253       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 254       DECL_PADDING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 255       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 256     }
 257
 258   if (VAR_P (expr))
 259     {
 260       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 261       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 262     }
 263
 264   if (TREE_CODE (expr) == RESULT_DECL
 265       || TREE_CODE (expr) == PARM_DECL
 266       || VAR_P (expr))
 267     {
 268       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 269       if (VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 270         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 271     }
 272 }
 273
 274
 275 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 276    of expression EXPR from bitpack BP.  */
 277
 278 static void
 279 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 280 {
 281   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 282 }
 283
 284
 285 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 286    of expression EXPR from bitpack BP.  */
 287
 288 static void
 289 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 290 {
 291   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 292   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 293   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 294   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 295   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 296   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 297   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 298
 299   if (VAR_P (expr))
 300     {
 301       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 302       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 303     }
 304
 305   if (TREE_CODE (expr) == FUNCTION_DECL)
 306     {
 307       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 308       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 309       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 310     }
 311 }
 312
 313
 314 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 315    of expression EXPR from bitpack BP.  */
 316
 317 static void
 318 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 319 {
 320   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 321                                                BUILT_IN_LAST);
 322   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 325   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 334                         = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 339   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 340     {
 341       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 342                                                                             12);
 343       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 344           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 345         fatal_error (input_location,
 346                      "machine independent builtin code out of range");
 347       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 348         {
 349           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 350           if (!result || result == error_mark_node)
 351             fatal_error (input_location,
 352                          "target specific builtin not available");
 353         }
 354     }
 355 }
 356
 357
 358 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 359    of expression EXPR from bitpack BP.  */
 360
 361 static void
 362 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 363 {
 364   machine_mode mode;
 365
 366   mode = bp_unpack_machine_mode (bp);
 367   SET_TYPE_MODE (expr, mode);
 368   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 369   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 370      no streaming.  */
 371   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 372   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 373   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 374   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 375   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 376   if (RECORD_OR_UNION_TYPE_P (expr))
 377     {
 378       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 379       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 380     }
 381   else if (TREE_CODE (expr) == ARRAY_TYPE)
 382     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 383   if (AGGREGATE_TYPE_P (expr))
 384     TYPE_TYPELESS_STORAGE (expr) = (unsigned) bp_unpack_value (bp, 1);
 385   TYPE_EMPTY_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 386   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 387   SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
 388 #ifdef ACCEL_COMPILER
 389   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 390     SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
 391 #endif
 392 }
 393
 394
 395 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 396    of expression EXPR from bitpack BP.  */
 397
 398 static void
 399 unpack_ts_block_value_fields (struct data_in *data_in,
 400                               struct bitpack_d *bp, tree expr)
 401 {
 402   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 403   /* BLOCK_NUMBER is recomputed.  */
 404   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 405 }
 406
 407 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 408    structure of expression EXPR from bitpack BP.  */
 409
 410 static void
 411 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 412                                               struct bitpack_d *bp, tree expr)
 413 {
 414   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 415   vec_safe_push (all_translation_units, expr);
 416 }
 417
 418
 419 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 420    structure of expression EXPR from bitpack BP.  */
 421
 422 static void
 423 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 424                                    struct bitpack_d *bp, tree expr)
 425 {
 426   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 427   switch (OMP_CLAUSE_CODE (expr))
 428     {
 429     case OMP_CLAUSE_DEFAULT:
 430       OMP_CLAUSE_DEFAULT_KIND (expr)
 431         = bp_unpack_enum (bp, omp_clause_default_kind,
 432                           OMP_CLAUSE_DEFAULT_LAST);
 433       break;
 434     case OMP_CLAUSE_SCHEDULE:
 435       OMP_CLAUSE_SCHEDULE_KIND (expr)
 436         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 437                           OMP_CLAUSE_SCHEDULE_LAST);
 438       break;
 439     case OMP_CLAUSE_DEPEND:
 440       OMP_CLAUSE_DEPEND_KIND (expr)
 441         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 442       break;
 443     case OMP_CLAUSE_MAP:
 444       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 445                                                      GOMP_MAP_LAST));
 446       break;
 447     case OMP_CLAUSE_PROC_BIND:
 448       OMP_CLAUSE_PROC_BIND_KIND (expr)
 449         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 450                           OMP_CLAUSE_PROC_BIND_LAST);
 451       break;
 452     case OMP_CLAUSE_REDUCTION:
 453       OMP_CLAUSE_REDUCTION_CODE (expr)
 454         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 455       break;
 456     default:
 457       break;
 458     }
 459 }
 460
 461
 462 /* Read all the language-independent bitfield values for EXPR from IB.
 463    Return the partially unpacked bitpack so the caller can unpack any other
 464    bitfield values that the writer may have written.  */
 465
 466 void
 467 streamer_read_tree_bitfields (struct lto_input_block *ib,
 468                               struct data_in *data_in, tree expr)
 469 {
 470   enum tree_code code;
 471   struct bitpack_d bp;
 472
 473   /* Read the bitpack of non-pointer values from IB.  */
 474   bp = streamer_read_bitpack (ib);
 475
 476   /* The first word in BP contains the code of the tree that we
 477      are about to read.  */
 478   code = (enum tree_code) bp_unpack_value (&bp, 16);
 479   lto_tag_check (lto_tree_code_to_tag (code),
 480                  lto_tree_code_to_tag (TREE_CODE (expr)));
 481
 482   /* Note that all these functions are highly sensitive to changes in
 483      the types and sizes of each of the fields being packed.  */
 484   unpack_ts_base_value_fields (&bp, expr);
 485
 486   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 487     unpack_ts_int_cst_value_fields (&bp, expr);
 488
 489   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 490     unpack_ts_real_cst_value_fields (&bp, expr);
 491
 492   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 493     unpack_ts_fixed_cst_value_fields (&bp, expr);
 494
 495   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 496     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 497
 498   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 499     unpack_ts_decl_common_value_fields (&bp, expr);
 500
 501   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 502     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 503
 504   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 505     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 506
 507   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 508     unpack_ts_function_decl_value_fields (&bp, expr);
 509
 510   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 511     unpack_ts_type_common_value_fields (&bp, expr);
 512
 513   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 514     {
 515       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 516       if (code == MEM_REF
 517           || code == TARGET_MEM_REF)
 518         {
 519           MR_DEPENDENCE_CLIQUE (expr)
 520             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 521           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 522             MR_DEPENDENCE_BASE (expr)
 523               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 524         }
 525     }
 526
 527   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 528     unpack_ts_block_value_fields (data_in, &bp, expr);
 529
 530   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 531     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 532
 533   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 534     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 535
 536   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 537     {
 538       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 539       if (length > 0)
 540         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 541     }
 542
 543   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 544     {
 545       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 546       if (length > 0)
 547         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 548     }
 549
 550 #ifndef ACCEL_COMPILER
 551   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 552     {
 553       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 554       if (targetm.target_option.post_stream_in)
 555         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 556     }
 557 #endif
 558
 559   if (code == OMP_CLAUSE)
 560     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 561 }
 562
 563
 564 /* Materialize a new tree from input block IB using descriptors in
 565    DATA_IN.  The code for the new tree should match TAG.  Store in
 566    *IX_P the index into the reader cache where the new tree is stored.  */
 567
 568 tree
 569 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 570                      enum LTO_tags tag)
 571 {
 572   enum tree_code code;
 573   tree result;
 574
 575   result = NULL_TREE;
 576
 577   code = lto_tag_to_tree_code (tag);
 578
 579   /* We should never see an SSA_NAME tree.  Only the version numbers of
 580      SSA names are ever written out.  See input_ssa_names.  */
 581   gcc_assert (code != SSA_NAME);
 582
 583   /* Instantiate a new tree using the header data.  */
 584   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 585     result = streamer_read_string_cst (data_in, ib);
 586   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 587     result = input_identifier (data_in, ib);
 588   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 589     {
 590       HOST_WIDE_INT len = streamer_read_hwi (ib);
 591       result = make_tree_vec (len);
 592     }
 593   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 594     {
 595       bitpack_d bp = streamer_read_bitpack (ib);
 596       unsigned int log2_npatterns = bp_unpack_value (&bp, 8);
 597       unsigned int nelts_per_pattern = bp_unpack_value (&bp, 8);
 598       result = make_vector (log2_npatterns, nelts_per_pattern);
 599     }
 600   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 601     {
 602       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 603       result = make_tree_binfo (len);
 604     }
 605   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 606     {
 607       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 608       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 609       result = make_int_cst (len, ext_len);
 610     }
 611   else if (code == CALL_EXPR)
 612     {
 613       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 614       return build_vl_exp (CALL_EXPR, nargs + 3);
 615     }
 616   else if (code == OMP_CLAUSE)
 617     {
 618       enum omp_clause_code subcode
 619         = (enum omp_clause_code) streamer_read_uhwi (ib);
 620       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 621     }
 622   else
 623     {
 624       /* For all other nodes, materialize the tree with a raw
 625          make_node call.  */
 626       result = make_node (code);
 627     }
 628
 629   return result;
 630 }
 631
 632
 633 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 634    block IB.  DATA_IN contains tables and descriptors for the
 635    file being read.  */
 636
 637
 638 static void
 639 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 640                                    struct data_in *data_in, tree expr)
 641 {
 642   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 643     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 644 }
 645
 646
 647 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 648    block IB.  DATA_IN contains tables and descriptors for the
 649    file being read.  */
 650
 651 static void
 652 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 653                                    struct data_in *data_in, tree expr)
 654 {
 655   unsigned int count = vector_cst_encoded_nelts (expr);
 656   for (unsigned int i = 0; i < count; ++i)
 657     VECTOR_CST_ENCODED_ELT (expr, i) = stream_read_tree (ib, data_in);
 658 }
 659
 660
 661 /* Read all pointer fields in the TS_POLY_INT_CST structure of EXPR from
 662    input block IB.  DATA_IN contains tables and descriptors for the
 663    file being read.  */
 664
 665 static void
 666 lto_input_ts_poly_tree_pointers (struct lto_input_block *ib,
 667                                  struct data_in *data_in, tree expr)
 668 {
 669   for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
 670     POLY_INT_CST_COEFF (expr, i) = stream_read_tree (ib, data_in);
 671 }
 672
 673
 674 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 675    block IB.  DATA_IN contains tables and descriptors for the
 676    file being read.  */
 677
 678 static void
 679 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 680                                     struct data_in *data_in, tree expr)
 681 {
 682   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 683   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 684 }
 685
 686
 687 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 688    from input block IB.  DATA_IN contains tables and descriptors for the
 689    file being read.  */
 690
 691 static void
 692 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 693                                          struct data_in *data_in, tree expr)
 694 {
 695   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 696   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 697 }
 698
 699
 700 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 701    input block IB.  DATA_IN contains tables and descriptors for the
 702    file being read.  */
 703
 704 static void
 705 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 706                                         struct data_in *data_in, tree expr)
 707 {
 708   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 709   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 710   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 711   DECL_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 712
 713   if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 714       && DECL_HAS_VALUE_EXPR_P (expr))
 715     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 716
 717   if (VAR_P (expr)
 718       && DECL_HAS_DEBUG_EXPR_P (expr))
 719     {
 720       tree dexpr = stream_read_tree (ib, data_in);
 721       if (dexpr)
 722         SET_DECL_DEBUG_EXPR (expr, dexpr);
 723     }
 724 }
 725
 726
 727 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 728    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 729    file being read.  */
 730
 731 static void
 732 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 733                                             struct data_in *data_in, tree expr)
 734 {
 735   if (TREE_CODE (expr) == TYPE_DECL)
 736     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 737 }
 738
 739
 740 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 741    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_with_vis_tree_pointers (struct lto_input_block *ib,
 746                                           struct data_in *data_in, tree expr)
 747 {
 748   tree id;
 749
 750   id = stream_read_tree (ib, data_in);
 751   if (id)
 752     {
 753       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 754       SET_DECL_ASSEMBLER_NAME (expr, id);
 755     }
 756 }
 757
 758
 759 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 760    input block IB.  DATA_IN contains tables and descriptors for the
 761    file being read.  */
 762
 763 static void
 764 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 765                                        struct data_in *data_in, tree expr)
 766 {
 767   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 768   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 769   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 770   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 771   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 772 }
 773
 774
 775 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 776    from input block IB.  DATA_IN contains tables and descriptors for the
 777    file being read.  */
 778
 779 static void
 780 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 781                                           struct data_in *data_in, tree expr)
 782 {
 783   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 784   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 785   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 786 #ifndef ACCEL_COMPILER
 787   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 788 #endif
 789   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 790 #ifdef ACCEL_COMPILER
 791   {
 792     tree opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr);
 793     if (opts)
 794       {
 795         struct gcc_options tmp;
 796         init_options_struct (&tmp, NULL);
 797         cl_optimization_restore (&tmp, TREE_OPTIMIZATION (opts));
 798         finish_options (&tmp, &global_options_set, UNKNOWN_LOCATION);
 799         opts = build_optimization_node (&tmp);
 800         finalize_options_struct (&tmp);
 801         DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = opts;
 802       }
 803   }
 804 #endif
 805
 806   /* If the file contains a function with an EH personality set,
 807      then it was compiled with -fexceptions.  In that case, initialize
 808      the backend EH machinery.  */
 809   if (DECL_FUNCTION_PERSONALITY (expr))
 810     lto_init_eh ();
 811 }
 812
 813
 814 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 815    input block IB.  DATA_IN contains tables and descriptors for the file
 816    being read.  */
 817
 818 static void
 819 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 820                                         struct data_in *data_in, tree expr)
 821 {
 822   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 823   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 824   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 825   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 826   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 827      reconstructed during fixup.  */
 828   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 829      during fixup.  */
 830   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 831   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 832   /* TYPE_CANONICAL gets re-computed during type merging.  */
 833   TYPE_CANONICAL (expr) = NULL_TREE;
 834   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 835 }
 836
 837 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 838    from input block IB.  DATA_IN contains tables and descriptors for the
 839    file being read.  */
 840
 841 static void
 842 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 843                                             struct data_in *data_in,
 844                                             tree expr)
 845 {
 846   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 847     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 848   else if (TREE_CODE (expr) == ARRAY_TYPE)
 849     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 850   else if (RECORD_OR_UNION_TYPE_P (expr))
 851     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 852   else if (TREE_CODE (expr) == FUNCTION_TYPE
 853            || TREE_CODE (expr) == METHOD_TYPE)
 854     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 855
 856   if (!POINTER_TYPE_P (expr))
 857     TYPE_MIN_VALUE_RAW (expr) = stream_read_tree (ib, data_in);
 858   TYPE_MAX_VALUE_RAW (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_POLY_INT_CST))
1059     lto_input_ts_poly_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1062     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1065     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1068     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1069
1070   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1071     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1072
1073   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1074     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1075
1076   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1077     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1078
1079   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1080     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1081
1082   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1083     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1084
1085   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1086     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1087
1088   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1089     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1090
1091   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1092     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1093
1094   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1095     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1096
1097   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1098     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1099
1100   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1101     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1102
1103   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1104     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1105
1106   if (code == OMP_CLAUSE)
1107     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1108 }
1109
1110
1111 /* Read an index IX from input block IB and return the tree node at
1112    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1113
1114 tree
1115 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1116 {
1117   unsigned HOST_WIDE_INT ix;
1118   tree result;
1119   enum LTO_tags expected_tag;
1120
1121   ix = streamer_read_uhwi (ib);
1122   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1123
1124   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1125   gcc_assert (result
1126               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1127
1128   return result;
1129 }