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