gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2015 Free Software Foundation, Inc.
   4    Contributed by Diego Novillo <dnovillo@google.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "diagnostic.h"
  26 #include "hash-set.h"
  27 #include "machmode.h"
  28 #include "vec.h"
  29 #include "double-int.h"
  30 #include "input.h"
  31 #include "alias.h"
  32 #include "symtab.h"
  33 #include "options.h"
  34 #include "wide-int.h"
  35 #include "inchash.h"
  36 #include "real.h"
  37 #include "fixed-value.h"
  38 #include "tree.h"
  39 #include "fold-const.h"
  40 #include "stringpool.h"
  41 #include "predict.h"
  42 #include "tm.h"
  43 #include "hard-reg-set.h"
  44 #include "input.h"
  45 #include "function.h"
  46 #include "basic-block.h"
  47 #include "tree-ssa-alias.h"
  48 #include "internal-fn.h"
  49 #include "gimple-expr.h"
  50 #include "is-a.h"
  51 #include "gimple.h"
  52 #include "hash-map.h"
  53 #include "plugin-api.h"
  54 #include "ipa-ref.h"
  55 #include "cgraph.h"
  56 #include "tree-streamer.h"
  57 #include "data-streamer.h"
  58 #include "streamer-hooks.h"
  59 #include "lto-streamer.h"
  60 #include "builtins.h"
  61 #include "ipa-chkp.h"
  62 #include "gomp-constants.h"
  63
  64
  65 /* Read a STRING_CST from the string table in DATA_IN using input
  66    block IB.  */
  67
  68 tree
  69 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  70 {
  71   unsigned int len;
  72   const char * ptr;
  73
  74   ptr = streamer_read_indexed_string (data_in, ib, &len);
  75   if (!ptr)
  76     return NULL;
  77   return build_string (len, ptr);
  78 }
  79
  80
  81 /* Read an IDENTIFIER from the string table in DATA_IN using input
  82    block IB.  */
  83
  84 static tree
  85 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  86 {
  87   unsigned int len;
  88   const char *ptr;
  89
  90   ptr = streamer_read_indexed_string (data_in, ib, &len);
  91   if (!ptr)
  92     return NULL;
  93   return get_identifier_with_length (ptr, len);
  94 }
  95
  96
  97 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  98    tables and descriptors for the file being read.  */
  99
 100 tree
 101 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
 102 {
 103   tree first, prev, curr;
 104
 105   /* The chain is written as NULL terminated list of trees.  */
 106   first = prev = NULL_TREE;
 107   do
 108     {
 109       curr = stream_read_tree (ib, data_in);
 110       if (prev)
 111         TREE_CHAIN (prev) = curr;
 112       else
 113         first = curr;
 114
 115       prev = curr;
 116     }
 117   while (curr);
 118
 119   return first;
 120 }
 121
 122
 123 /* Unpack all the non-pointer fields of the TS_BASE structure of
 124    expression EXPR from bitpack BP.  */
 125
 126 static inline void
 127 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 128 {
 129   /* Note that the code for EXPR has already been unpacked to create EXPR in
 130      streamer_alloc_tree.  */
 131   if (!TYPE_P (expr))
 132     {
 133       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 134       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 135       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 136
 137       /* TREE_PUBLIC is used on types to indicate that the type
 138          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 139          so we skip it here.  */
 140       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 141     }
 142   else
 143     bp_unpack_value (bp, 4);
 144   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 145   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 146   if (DECL_P (expr))
 147     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 148   else if (TYPE_P (expr))
 149     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 150   else
 151     bp_unpack_value (bp, 1);
 152   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 153   if (TYPE_P (expr))
 154     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 155   else
 156     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 157   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 158   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 159   if (TREE_CODE (expr) != TREE_BINFO)
 160     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 161   else
 162     bp_unpack_value (bp, 1);
 163   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 164   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 165   if (TYPE_P (expr))
 166     {
 167       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 168       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 169     }
 170   else if (TREE_CODE (expr) == SSA_NAME)
 171     {
 172       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 173       bp_unpack_value (bp, 8);
 174     }
 175   else
 176     bp_unpack_value (bp, 9);
 177 }
 178
 179
 180 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 181    expression EXPR from bitpack BP.  */
 182
 183 static void
 184 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 185 {
 186   int i;
 187   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 188     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 189 }
 190
 191
 192 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 193    expression EXPR from bitpack BP.  */
 194
 195 static void
 196 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 197 {
 198   unsigned i;
 199   REAL_VALUE_TYPE r;
 200   REAL_VALUE_TYPE *rp;
 201
 202   /* Clear all bits of the real value type so that we can later do
 203      bitwise comparisons to see if two values are the same.  */
 204   memset (&r, 0, sizeof r);
 205   r.cl = (unsigned) bp_unpack_value (bp, 2);
 206   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 207   r.sign = (unsigned) bp_unpack_value (bp, 1);
 208   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 209   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 210   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 211   for (i = 0; i < SIGSZ; i++)
 212     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 213
 214   rp = ggc_alloc<real_value> ();
 215   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 216   TREE_REAL_CST_PTR (expr) = rp;
 217 }
 218
 219
 220 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 221    expression EXPR from bitpack BP.  */
 222
 223 static void
 224 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 225 {
 226   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 227   fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 228   fp->data.low = bp_unpack_var_len_int (bp);
 229   fp->data.high = bp_unpack_var_len_int (bp);
 230   TREE_FIXED_CST_PTR (expr) = fp;
 231 }
 232
 233 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 234    of expression EXPR from bitpack BP.  */
 235
 236 static void
 237 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 238 {
 239   DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 240   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 241   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 242   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 243   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 244   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 245   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 246   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 247   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 248   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 249   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 250 #ifdef ACCEL_COMPILER
 251   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 252     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 253 #endif
 254   if (TREE_CODE (expr) == LABEL_DECL)
 255     {
 256       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 257
 258       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 259          force gimple_set_bb to recreate label_to_block_map.  */
 260       LABEL_DECL_UID (expr) = -1;
 261     }
 262
 263   if (TREE_CODE (expr) == FIELD_DECL)
 264     {
 265       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 266       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 267       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 268     }
 269
 270   if (TREE_CODE (expr) == VAR_DECL)
 271     {
 272       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 273       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 274     }
 275
 276   if (TREE_CODE (expr) == RESULT_DECL
 277       || TREE_CODE (expr) == PARM_DECL
 278       || TREE_CODE (expr) == VAR_DECL)
 279     {
 280       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 281       if (TREE_CODE (expr) == VAR_DECL
 282           || TREE_CODE (expr) == PARM_DECL)
 283         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 284     }
 285 }
 286
 287
 288 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 289    of expression EXPR from bitpack BP.  */
 290
 291 static void
 292 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 293 {
 294   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 295 }
 296
 297
 298 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 299    of expression EXPR from bitpack BP.  */
 300
 301 static void
 302 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 303 {
 304   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 305   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 306   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 307   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 308   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 309   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 310   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 311
 312   if (TREE_CODE (expr) == VAR_DECL)
 313     {
 314       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 315       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 316     }
 317
 318   if (TREE_CODE (expr) == FUNCTION_DECL)
 319     {
 320       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 321       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 322       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 323     }
 324 }
 325
 326
 327 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 328    of expression EXPR from bitpack BP.  */
 329
 330 static void
 331 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 332 {
 333   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 334                                                BUILT_IN_LAST);
 335   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 339   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 340   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 341   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 342   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 343   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 344   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 345   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 346   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 347                         = (unsigned) bp_unpack_value (bp, 1);
 348   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 349   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 350   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 351   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 352   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 353     {
 354       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 355                                                                             12);
 356       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 357           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 358         fatal_error (input_location,
 359                      "machine independent builtin code out of range");
 360       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 361         {
 362           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 363           if (!result || result == error_mark_node)
 364             fatal_error (input_location,
 365                          "target specific builtin not available");
 366         }
 367     }
 368 }
 369
 370
 371 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 372    of expression EXPR from bitpack BP.  */
 373
 374 static void
 375 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 376 {
 377   machine_mode mode;
 378
 379   mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 380   SET_TYPE_MODE (expr, mode);
 381   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 382   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 383   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 384   if (RECORD_OR_UNION_TYPE_P (expr))
 385     {
 386       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 387       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 388     }
 389   else if (TREE_CODE (expr) == ARRAY_TYPE)
 390     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 391   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 392   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 393   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 394   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 395   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 396   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 397 #ifdef ACCEL_COMPILER
 398   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 399     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 400 #endif
 401   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 402 }
 403
 404
 405 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 406    of expression EXPR from bitpack BP.  */
 407
 408 static void
 409 unpack_ts_block_value_fields (struct data_in *data_in,
 410                               struct bitpack_d *bp, tree expr)
 411 {
 412   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 413   /* BLOCK_NUMBER is recomputed.  */
 414   BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 415 }
 416
 417 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 418    structure of expression EXPR from bitpack BP.  */
 419
 420 static void
 421 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 422                                               struct bitpack_d *bp, tree expr)
 423 {
 424   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 425   vec_safe_push (all_translation_units, expr);
 426 }
 427
 428
 429 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 430    structure of expression EXPR from bitpack BP.  */
 431
 432 static void
 433 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 434                                    struct bitpack_d *bp, tree expr)
 435 {
 436   OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in);
 437   switch (OMP_CLAUSE_CODE (expr))
 438     {
 439     case OMP_CLAUSE_DEFAULT:
 440       OMP_CLAUSE_DEFAULT_KIND (expr)
 441         = bp_unpack_enum (bp, omp_clause_default_kind,
 442                           OMP_CLAUSE_DEFAULT_LAST);
 443       break;
 444     case OMP_CLAUSE_SCHEDULE:
 445       OMP_CLAUSE_SCHEDULE_KIND (expr)
 446         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 447                           OMP_CLAUSE_SCHEDULE_LAST);
 448       break;
 449     case OMP_CLAUSE_DEPEND:
 450       OMP_CLAUSE_DEPEND_KIND (expr)
 451         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 452       break;
 453     case OMP_CLAUSE_MAP:
 454       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 455                                                      GOMP_MAP_LAST));
 456       break;
 457     case OMP_CLAUSE_PROC_BIND:
 458       OMP_CLAUSE_PROC_BIND_KIND (expr)
 459         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 460                           OMP_CLAUSE_PROC_BIND_LAST);
 461       break;
 462     case OMP_CLAUSE_REDUCTION:
 463       OMP_CLAUSE_REDUCTION_CODE (expr)
 464         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 465       break;
 466     default:
 467       break;
 468     }
 469 }
 470
 471
 472 /* Read all the language-independent bitfield values for EXPR from IB.
 473    Return the partially unpacked bitpack so the caller can unpack any other
 474    bitfield values that the writer may have written.  */
 475
 476 void
 477 streamer_read_tree_bitfields (struct lto_input_block *ib,
 478                               struct data_in *data_in, tree expr)
 479 {
 480   enum tree_code code;
 481   struct bitpack_d bp;
 482
 483   /* Read the bitpack of non-pointer values from IB.  */
 484   bp = streamer_read_bitpack (ib);
 485
 486   /* The first word in BP contains the code of the tree that we
 487      are about to read.  */
 488   code = (enum tree_code) bp_unpack_value (&bp, 16);
 489   lto_tag_check (lto_tree_code_to_tag (code),
 490                  lto_tree_code_to_tag (TREE_CODE (expr)));
 491
 492   /* Note that all these functions are highly sensitive to changes in
 493      the types and sizes of each of the fields being packed.  */
 494   unpack_ts_base_value_fields (&bp, expr);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 497     unpack_ts_int_cst_value_fields (&bp, expr);
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 500     unpack_ts_real_cst_value_fields (&bp, expr);
 501
 502   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 503     unpack_ts_fixed_cst_value_fields (&bp, expr);
 504
 505   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 506     DECL_SOURCE_LOCATION (expr) = stream_input_location (&bp, data_in);
 507
 508   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 509     unpack_ts_decl_common_value_fields (&bp, expr);
 510
 511   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 512     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 513
 514   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 515     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 516
 517   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 518     unpack_ts_function_decl_value_fields (&bp, expr);
 519
 520   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 521     unpack_ts_type_common_value_fields (&bp, expr);
 522
 523   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 524     {
 525       SET_EXPR_LOCATION (expr, stream_input_location (&bp, data_in));
 526       if (code == MEM_REF
 527           || code == TARGET_MEM_REF)
 528         {
 529           MR_DEPENDENCE_CLIQUE (expr)
 530             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 531           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 532             MR_DEPENDENCE_BASE (expr)
 533               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 534         }
 535     }
 536
 537   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 538     unpack_ts_block_value_fields (data_in, &bp, expr);
 539
 540   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 541     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 542
 543   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 544     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 545
 546   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 547     {
 548       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 549       if (length > 0)
 550         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 551     }
 552
 553   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 554     {
 555       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 556       if (length > 0)
 557         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 558     }
 559
 560 #ifndef ACCEL_COMPILER
 561   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 562     cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 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
 905   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 906     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 907
 908   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 909 }
 910
 911
 912 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 913    block IB.  DATA_IN contains tables and descriptors for the
 914    file being read.  */
 915
 916 static void
 917 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 918                                   struct data_in *data_in, tree expr)
 919 {
 920   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 921
 922   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 923
 924   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 925      the limited cases we can handle - those that represent inlined
 926      function scopes.  For the rest them on the floor instead of ICEing in
 927      dwarf2out.c.  */
 928   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 929   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 930      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 931      dwarf2out.c.  */
 932
 933   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 934      streaming time.  */
 935
 936   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 937      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 938      stream the child relationship explicitly.  */
 939   if (BLOCK_SUPERCONTEXT (expr)
 940       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 941     {
 942       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 943       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 944     }
 945
 946   /* The global block is rooted at the TU decl.  Hook it here to
 947      avoid the need to stream in this block during WPA time.  */
 948   else if (BLOCK_SUPERCONTEXT (expr)
 949            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 950     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 951
 952   /* The function-level block is connected at the time we read in
 953      function bodies for the same reason.  */
 954 }
 955
 956
 957 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 958    block IB.  DATA_IN contains tables and descriptors for the
 959    file being read.  */
 960
 961 static void
 962 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 963                                   struct data_in *data_in, tree expr)
 964 {
 965   unsigned i;
 966   tree t;
 967
 968   /* Note that the number of slots in EXPR was read in
 969      streamer_alloc_tree when instantiating EXPR.  However, the
 970      vector is empty so we cannot rely on vec::length to know how many
 971      elements to read.  So, this list is emitted as a 0-terminated
 972      list on the writer side.  */
 973   do
 974     {
 975       t = stream_read_tree (ib, data_in);
 976       if (t)
 977         BINFO_BASE_BINFOS (expr)->quick_push (t);
 978     }
 979   while (t);
 980
 981   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 982   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 983   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 984
 985   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 986      unpacking the bitfield section.  */
 987   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 988     {
 989       tree a = stream_read_tree (ib, data_in);
 990       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 991     }
 992   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 993      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 994 }
 995
 996
 997 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 998    input block IB.  DATA_IN contains tables and descriptors for the
 999    file being read.  */
1000
1001 static void
1002 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1003                                         struct data_in *data_in, tree expr)
1004 {
1005   unsigned i;
1006
1007   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1008     {
1009       constructor_elt e;
1010       e.index = stream_read_tree (ib, data_in);
1011       e.value = stream_read_tree (ib, data_in);
1012       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1013     }
1014 }
1015
1016
1017 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1018    input block IB.  DATA_IN contains tables and descriptors for the
1019    file being read.  */
1020
1021 static void
1022 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1023                                        struct data_in *data_in, tree expr)
1024 {
1025   int i;
1026
1027   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1028     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1029   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1030 }
1031
1032
1033 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1034    contains tables and descriptors for the file being read.  */
1035
1036 void
1037 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1038                          tree expr)
1039 {
1040   enum tree_code code;
1041
1042   code = TREE_CODE (expr);
1043
1044   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1045     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1046
1047   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1048     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1049
1050   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1051     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1052
1053   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1054     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1057     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1060     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1063     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1066     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1069     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1072     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1075     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1078     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1079
1080   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1081     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1082
1083   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1084     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1085
1086   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1087     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1088
1089   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1090     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1091
1092   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1093     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1094
1095   if (code == OMP_CLAUSE)
1096     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1097 }
1098
1099
1100 /* Read an index IX from input block IB and return the tree node at
1101    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1102
1103 tree
1104 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1105 {
1106   unsigned HOST_WIDE_INT ix;
1107   tree result;
1108   enum LTO_tags expected_tag;
1109
1110   ix = streamer_read_uhwi (ib);
1111   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1112
1113   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1114   gcc_assert (result
1115               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1116
1117   return result;
1118 }
1119
1120
1121 /* Read a code and class from input block IB and return the
1122    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1123
1124 tree
1125 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1126 {
1127   enum built_in_class fclass;
1128   enum built_in_function fcode;
1129   const char *asmname;
1130   tree result;
1131
1132   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1133   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1134
1135   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1136
1137   if (fclass == BUILT_IN_NORMAL)
1138     {
1139       if (fcode >= END_BUILTINS)
1140         fatal_error (input_location,
1141                      "machine independent builtin code out of range");
1142       result = builtin_decl_explicit (fcode);
1143       if (!result
1144           && fcode > BEGIN_CHKP_BUILTINS
1145           && fcode < END_CHKP_BUILTINS)
1146         {
1147           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1148           result = builtin_decl_explicit (fcode);
1149           result = chkp_maybe_clone_builtin_fndecl (result);
1150         }
1151       gcc_assert (result);
1152     }
1153   else if (fclass == BUILT_IN_MD)
1154     {
1155       result = targetm.builtin_decl (fcode, true);
1156       if (!result || result == error_mark_node)
1157         fatal_error (input_location, "target specific builtin not available");
1158     }
1159   else
1160     gcc_unreachable ();
1161
1162   asmname = streamer_read_string (data_in, ib);
1163   if (asmname)
1164     set_builtin_user_assembler_name (result, asmname);
1165
1166   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1167
1168   return result;
1169 }