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