gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2015 Free Software Foundation, Inc.
   4    Contributed by Diego Novillo <dnovillo@google.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "diagnostic.h"
  26 #include "input.h"
  27 #include "alias.h"
  28 #include "symtab.h"
  29 #include "options.h"
  30 #include "tree.h"
  31 #include "fold-const.h"
  32 #include "stringpool.h"
  33 #include "predict.h"
  34 #include "tm.h"
  35 #include "hard-reg-set.h"
  36 #include "input.h"
  37 #include "function.h"
  38 #include "basic-block.h"
  39 #include "tree-ssa-alias.h"
  40 #include "internal-fn.h"
  41 #include "gimple-expr.h"
  42 #include "is-a.h"
  43 #include "gimple.h"
  44 #include "plugin-api.h"
  45 #include "ipa-ref.h"
  46 #include "cgraph.h"
  47 #include "tree-streamer.h"
  48 #include "data-streamer.h"
  49 #include "streamer-hooks.h"
  50 #include "lto-streamer.h"
  51 #include "builtins.h"
  52 #include "ipa-chkp.h"
  53 #include "gomp-constants.h"
  54
  55
  56 /* Read a STRING_CST from the string table in DATA_IN using input
  57    block IB.  */
  58
  59 tree
  60 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  61 {
  62   unsigned int len;
  63   const char * ptr;
  64
  65   ptr = streamer_read_indexed_string (data_in, ib, &len);
  66   if (!ptr)
  67     return NULL;
  68   return build_string (len, ptr);
  69 }
  70
  71
  72 /* Read an IDENTIFIER from the string table in DATA_IN using input
  73    block IB.  */
  74
  75 static tree
  76 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  77 {
  78   unsigned int len;
  79   const char *ptr;
  80
  81   ptr = streamer_read_indexed_string (data_in, ib, &len);
  82   if (!ptr)
  83     return NULL;
  84   return get_identifier_with_length (ptr, len);
  85 }
  86
  87
  88 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  89    tables and descriptors for the file being read.  */
  90
  91 tree
  92 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  93 {
  94   tree first, prev, curr;
  95
  96   /* The chain is written as NULL terminated list of trees.  */
  97   first = prev = NULL_TREE;
  98   do
  99     {
 100       curr = stream_read_tree (ib, data_in);
 101       if (prev)
 102         TREE_CHAIN (prev) = curr;
 103       else
 104         first = curr;
 105
 106       prev = curr;
 107     }
 108   while (curr);
 109
 110   return first;
 111 }
 112
 113
 114 /* Unpack all the non-pointer fields of the TS_BASE structure of
 115    expression EXPR from bitpack BP.  */
 116
 117 static inline void
 118 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 119 {
 120   /* Note that the code for EXPR has already been unpacked to create EXPR in
 121      streamer_alloc_tree.  */
 122   if (!TYPE_P (expr))
 123     {
 124       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 125       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 126       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 127
 128       /* TREE_PUBLIC is used on types to indicate that the type
 129          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 130          so we skip it here.  */
 131       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 132     }
 133   else
 134     bp_unpack_value (bp, 4);
 135   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   if (DECL_P (expr))
 138     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 139   else if (TYPE_P (expr))
 140     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 141   else
 142     bp_unpack_value (bp, 1);
 143   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 144   if (TYPE_P (expr))
 145     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 146   else
 147     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 148   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 149   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 150   if (TREE_CODE (expr) != TREE_BINFO)
 151     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 152   else
 153     bp_unpack_value (bp, 1);
 154   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 155   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 156   if (TYPE_P (expr))
 157     {
 158       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 159       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 160     }
 161   else if (TREE_CODE (expr) == SSA_NAME)
 162     {
 163       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 164       bp_unpack_value (bp, 8);
 165     }
 166   else
 167     bp_unpack_value (bp, 9);
 168 }
 169
 170
 171 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 172    expression EXPR from bitpack BP.  */
 173
 174 static void
 175 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 176 {
 177   int i;
 178   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 179     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 180 }
 181
 182
 183 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 184    expression EXPR from bitpack BP.  */
 185
 186 static void
 187 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 188 {
 189   unsigned i;
 190   REAL_VALUE_TYPE r;
 191   REAL_VALUE_TYPE *rp;
 192
 193   /* Clear all bits of the real value type so that we can later do
 194      bitwise comparisons to see if two values are the same.  */
 195   memset (&r, 0, sizeof r);
 196   r.cl = (unsigned) bp_unpack_value (bp, 2);
 197   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 198   r.sign = (unsigned) bp_unpack_value (bp, 1);
 199   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 200   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 201   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 202   for (i = 0; i < SIGSZ; i++)
 203     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 204
 205   rp = ggc_alloc<real_value> ();
 206   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 207   TREE_REAL_CST_PTR (expr) = rp;
 208 }
 209
 210
 211 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 212    expression EXPR from bitpack BP.  */
 213
 214 static void
 215 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 216 {
 217   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 218   fp->mode = bp_unpack_machine_mode (bp);
 219   fp->data.low = bp_unpack_var_len_int (bp);
 220   fp->data.high = bp_unpack_var_len_int (bp);
 221   TREE_FIXED_CST_PTR (expr) = fp;
 222 }
 223
 224 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 225    of expression EXPR from bitpack BP.  */
 226
 227 static void
 228 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 229 {
 230   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 231   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 232   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 233   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 234   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 235   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 236   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 237   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 238   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 239   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 240   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 241 #ifdef ACCEL_COMPILER
 242   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 243     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 244 #endif
 245   if (TREE_CODE (expr) == LABEL_DECL)
 246     {
 247       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 248
 249       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 250          force gimple_set_bb to recreate label_to_block_map.  */
 251       LABEL_DECL_UID (expr) = -1;
 252     }
 253
 254   if (TREE_CODE (expr) == FIELD_DECL)
 255     {
 256       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 257       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 258       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 259     }
 260
 261   if (TREE_CODE (expr) == VAR_DECL)
 262     {
 263       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 264       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 265     }
 266
 267   if (TREE_CODE (expr) == RESULT_DECL
 268       || TREE_CODE (expr) == PARM_DECL
 269       || TREE_CODE (expr) == VAR_DECL)
 270     {
 271       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 272       if (TREE_CODE (expr) == VAR_DECL
 273           || TREE_CODE (expr) == PARM_DECL)
 274         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 275     }
 276 }
 277
 278
 279 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 280    of expression EXPR from bitpack BP.  */
 281
 282 static void
 283 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 284 {
 285   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 286 }
 287
 288
 289 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 290    of expression EXPR from bitpack BP.  */
 291
 292 static void
 293 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 294 {
 295   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 296   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 297   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 298   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 299   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 300   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 301   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 302
 303   if (TREE_CODE (expr) == VAR_DECL)
 304     {
 305       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 306       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 307     }
 308
 309   if (TREE_CODE (expr) == FUNCTION_DECL)
 310     {
 311       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 312       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 313       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 314     }
 315 }
 316
 317
 318 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 319    of expression EXPR from bitpack BP.  */
 320
 321 static void
 322 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 323 {
 324   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 325                                                BUILT_IN_LAST);
 326   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 338                         = (unsigned) bp_unpack_value (bp, 1);
 339   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 340   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 341   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 342   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 343   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 344     {
 345       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 346                                                                             12);
 347       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 348           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 349         fatal_error (input_location,
 350                      "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 (input_location,
 356                          "target specific builtin not available");
 357         }
 358     }
 359 }
 360
 361
 362 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 363    of expression EXPR from bitpack BP.  */
 364
 365 static void
 366 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 367 {
 368   machine_mode mode;
 369
 370   mode = bp_unpack_machine_mode (bp);
 371   SET_TYPE_MODE (expr, mode);
 372   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 373   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 374   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 375   if (RECORD_OR_UNION_TYPE_P (expr))
 376     {
 377       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 378       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 379     }
 380   else if (TREE_CODE (expr) == ARRAY_TYPE)
 381     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 382   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 383   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 384   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 385   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 386   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 387   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 388 #ifdef ACCEL_COMPILER
 389   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 390     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 391 #endif
 392   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 393 }
 394
 395
 396 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 397    of expression EXPR from bitpack BP.  */
 398
 399 static void
 400 unpack_ts_block_value_fields (struct data_in *data_in,
 401                               struct bitpack_d *bp, tree expr)
 402 {
 403   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 404   /* BLOCK_NUMBER is recomputed.  */
 405   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 406 }
 407
 408 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 409    structure of expression EXPR from bitpack BP.  */
 410
 411 static void
 412 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 413                                               struct bitpack_d *bp, tree expr)
 414 {
 415   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 416   vec_safe_push (all_translation_units, expr);
 417 }
 418
 419
 420 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 421    structure of expression EXPR from bitpack BP.  */
 422
 423 static void
 424 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 425                                    struct bitpack_d *bp, tree expr)
 426 {
 427   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 428   switch (OMP_CLAUSE_CODE (expr))
 429     {
 430     case OMP_CLAUSE_DEFAULT:
 431       OMP_CLAUSE_DEFAULT_KIND (expr)
 432         = bp_unpack_enum (bp, omp_clause_default_kind,
 433                           OMP_CLAUSE_DEFAULT_LAST);
 434       break;
 435     case OMP_CLAUSE_SCHEDULE:
 436       OMP_CLAUSE_SCHEDULE_KIND (expr)
 437         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 438                           OMP_CLAUSE_SCHEDULE_LAST);
 439       break;
 440     case OMP_CLAUSE_DEPEND:
 441       OMP_CLAUSE_DEPEND_KIND (expr)
 442         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 443       break;
 444     case OMP_CLAUSE_MAP:
 445       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 446                                                      GOMP_MAP_LAST));
 447       break;
 448     case OMP_CLAUSE_PROC_BIND:
 449       OMP_CLAUSE_PROC_BIND_KIND (expr)
 450         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 451                           OMP_CLAUSE_PROC_BIND_LAST);
 452       break;
 453     case OMP_CLAUSE_REDUCTION:
 454       OMP_CLAUSE_REDUCTION_CODE (expr)
 455         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 456       break;
 457     default:
 458       break;
 459     }
 460 }
 461
 462
 463 /* Read all the language-independent bitfield values for EXPR from IB.
 464    Return the partially unpacked bitpack so the caller can unpack any other
 465    bitfield values that the writer may have written.  */
 466
 467 void
 468 streamer_read_tree_bitfields (struct lto_input_block *ib,
 469                               struct data_in *data_in, tree expr)
 470 {
 471   enum tree_code code;
 472   struct bitpack_d bp;
 473
 474   /* Read the bitpack of non-pointer values from IB.  */
 475   bp = streamer_read_bitpack (ib);
 476
 477   /* The first word in BP contains the code of the tree that we
 478      are about to read.  */
 479   code = (enum tree_code) bp_unpack_value (&bp, 16);
 480   lto_tag_check (lto_tree_code_to_tag (code),
 481                  lto_tree_code_to_tag (TREE_CODE (expr)));
 482
 483   /* Note that all these functions are highly sensitive to changes in
 484      the types and sizes of each of the fields being packed.  */
 485   unpack_ts_base_value_fields (&bp, expr);
 486
 487   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 488     unpack_ts_int_cst_value_fields (&bp, expr);
 489
 490   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 491     unpack_ts_real_cst_value_fields (&bp, expr);
 492
 493   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 494     unpack_ts_fixed_cst_value_fields (&bp, expr);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 497     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 500     unpack_ts_decl_common_value_fields (&bp, expr);
 501
 502   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 503     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 504
 505   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 506     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 507
 508   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 509     unpack_ts_function_decl_value_fields (&bp, expr);
 510
 511   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 512     unpack_ts_type_common_value_fields (&bp, expr);
 513
 514   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 515     {
 516       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 517       if (code == MEM_REF
 518           || code == TARGET_MEM_REF)
 519         {
 520           MR_DEPENDENCE_CLIQUE (expr)
 521             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 522           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 523             MR_DEPENDENCE_BASE (expr)
 524               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 525         }
 526     }
 527
 528   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 529     unpack_ts_block_value_fields (data_in, &bp, expr);
 530
 531   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 532     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 533
 534   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 535     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 536
 537   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 538     {
 539       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 540       if (length > 0)
 541         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 542     }
 543
 544   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 545     {
 546       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 547       if (length > 0)
 548         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 549     }
 550
 551 #ifndef ACCEL_COMPILER
 552   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 553     {
 554       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 555       if (targetm.target_option.post_stream_in)
 556         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 557     }
 558 #endif
 559
 560   if (code == OMP_CLAUSE)
 561     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 562 }
 563
 564
 565 /* Materialize a new tree from input block IB using descriptors in
 566    DATA_IN.  The code for the new tree should match TAG.  Store in
 567    *IX_P the index into the reader cache where the new tree is stored.  */
 568
 569 tree
 570 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 571                      enum LTO_tags tag)
 572 {
 573   enum tree_code code;
 574   tree result;
 575 #ifdef LTO_STREAMER_DEBUG
 576   HOST_WIDE_INT orig_address_in_writer;
 577 #endif
 578
 579   result = NULL_TREE;
 580
 581 #ifdef LTO_STREAMER_DEBUG
 582   /* Read the word representing the memory address for the tree
 583      as it was written by the writer.  This is useful when
 584      debugging differences between the writer and reader.  */
 585   orig_address_in_writer = streamer_read_hwi (ib);
 586   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 587 #endif
 588
 589   code = lto_tag_to_tree_code (tag);
 590
 591   /* We should never see an SSA_NAME tree.  Only the version numbers of
 592      SSA names are ever written out.  See input_ssa_names.  */
 593   gcc_assert (code != SSA_NAME);
 594
 595   /* Instantiate a new tree using the header data.  */
 596   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 597     result = streamer_read_string_cst (data_in, ib);
 598   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 599     result = input_identifier (data_in, ib);
 600   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 601     {
 602       HOST_WIDE_INT len = streamer_read_hwi (ib);
 603       result = make_tree_vec (len);
 604     }
 605   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 606     {
 607       HOST_WIDE_INT len = streamer_read_hwi (ib);
 608       result = make_vector (len);
 609     }
 610   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 611     {
 612       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 613       result = make_tree_binfo (len);
 614     }
 615   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 616     {
 617       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 618       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 619       result = make_int_cst (len, ext_len);
 620     }
 621   else if (code == CALL_EXPR)
 622     {
 623       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 624       return build_vl_exp (CALL_EXPR, nargs + 3);
 625     }
 626   else if (code == OMP_CLAUSE)
 627     {
 628       enum omp_clause_code subcode
 629         = (enum omp_clause_code) streamer_read_uhwi (ib);
 630       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 631     }
 632   else
 633     {
 634       /* For all other nodes, materialize the tree with a raw
 635          make_node call.  */
 636       result = make_node (code);
 637     }
 638
 639 #ifdef LTO_STREAMER_DEBUG
 640   /* Store the original address of the tree as seen by the writer
 641      in RESULT's aux field.  This is useful when debugging streaming
 642      problems.  This way, a debugging session can be started on
 643      both writer and reader with a breakpoint using this address
 644      value in both.  */
 645   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 646 #endif
 647
 648   return result;
 649 }
 650
 651
 652 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 653    block IB.  DATA_IN contains tables and descriptors for the
 654    file being read.  */
 655
 656
 657 static void
 658 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 659                                    struct data_in *data_in, tree expr)
 660 {
 661   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 662     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 663 }
 664
 665
 666 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 667    block IB.  DATA_IN contains tables and descriptors for the
 668    file being read.  */
 669
 670 static void
 671 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 672                                    struct data_in *data_in, tree expr)
 673 {
 674   unsigned i;
 675   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 676     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 677 }
 678
 679
 680 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 681    block IB.  DATA_IN contains tables and descriptors for the
 682    file being read.  */
 683
 684 static void
 685 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 686                                     struct data_in *data_in, tree expr)
 687 {
 688   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 689   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 690 }
 691
 692
 693 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 694    from input block IB.  DATA_IN contains tables and descriptors for the
 695    file being read.  */
 696
 697 static void
 698 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 699                                          struct data_in *data_in, tree expr)
 700 {
 701   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 702   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 703 }
 704
 705
 706 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 707    input block IB.  DATA_IN contains tables and descriptors for the
 708    file being read.  */
 709
 710 static void
 711 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 712                                         struct data_in *data_in, tree expr)
 713 {
 714   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 715   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 716   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 717
 718   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 719      for early inlining so drop it on the floor instead of ICEing in
 720      dwarf2out.c.  */
 721
 722   if ((TREE_CODE (expr) == VAR_DECL
 723        || TREE_CODE (expr) == PARM_DECL)
 724       && DECL_HAS_VALUE_EXPR_P (expr))
 725     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 726
 727   if (TREE_CODE (expr) == VAR_DECL)
 728     {
 729       tree dexpr = stream_read_tree (ib, data_in);
 730       if (dexpr)
 731         SET_DECL_DEBUG_EXPR (expr, dexpr);
 732     }
 733 }
 734
 735
 736 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 737    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 738    file being read.  */
 739
 740 static void
 741 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 742                                             struct data_in *data_in, tree expr)
 743 {
 744   if (TREE_CODE (expr) == TYPE_DECL)
 745     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 746 }
 747
 748
 749 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 750    from input block IB.  DATA_IN contains tables and descriptors for the
 751    file being read.  */
 752
 753 static void
 754 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 755                                           struct data_in *data_in, tree expr)
 756 {
 757   tree id;
 758
 759   id = stream_read_tree (ib, data_in);
 760   if (id)
 761     {
 762       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 763       SET_DECL_ASSEMBLER_NAME (expr, id);
 764     }
 765 }
 766
 767
 768 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 769    input block IB.  DATA_IN contains tables and descriptors for the
 770    file being read.  */
 771
 772 static void
 773 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 774                                        struct data_in *data_in, tree expr)
 775 {
 776   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 777   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 778   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 779   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 780   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 781 }
 782
 783
 784 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 785    from input block IB.  DATA_IN contains tables and descriptors for the
 786    file being read.  */
 787
 788 static void
 789 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 790                                           struct data_in *data_in, tree expr)
 791 {
 792   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 793   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 794   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 795 #ifndef ACCEL_COMPILER
 796   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 797 #endif
 798   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 799
 800   /* If the file contains a function with an EH personality set,
 801      then it was compiled with -fexceptions.  In that case, initialize
 802      the backend EH machinery.  */
 803   if (DECL_FUNCTION_PERSONALITY (expr))
 804     lto_init_eh ();
 805 }
 806
 807
 808 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 809    input block IB.  DATA_IN contains tables and descriptors for the file
 810    being read.  */
 811
 812 static void
 813 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 814                                         struct data_in *data_in, tree expr)
 815 {
 816   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 817   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 818   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 819   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 820   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 821      reconstructed during fixup.  */
 822   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 823      during fixup.  */
 824   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 825   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 826   /* TYPE_CANONICAL gets re-computed during type merging.  */
 827   TYPE_CANONICAL (expr) = NULL_TREE;
 828   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 829 }
 830
 831 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 832    from input block IB.  DATA_IN contains tables and descriptors for the
 833    file being read.  */
 834
 835 static void
 836 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 837                                             struct data_in *data_in,
 838                                             tree expr)
 839 {
 840   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 841     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 842   else if (TREE_CODE (expr) == ARRAY_TYPE)
 843     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 844   else if (RECORD_OR_UNION_TYPE_P (expr))
 845     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 846   else if (TREE_CODE (expr) == FUNCTION_TYPE
 847            || TREE_CODE (expr) == METHOD_TYPE)
 848     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 849
 850   if (!POINTER_TYPE_P (expr))
 851     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 852   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 853   if (RECORD_OR_UNION_TYPE_P (expr))
 854     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 855 }
 856
 857
 858 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 859    block IB.  DATA_IN contains tables and descriptors for the
 860    file being read.  */
 861
 862 static void
 863 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 864                                  struct data_in *data_in, tree expr)
 865 {
 866   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 867   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 868   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 869 }
 870
 871
 872 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 873    block IB.  DATA_IN contains tables and descriptors for the
 874    file being read.  */
 875
 876 static void
 877 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 878                                 struct data_in *data_in, tree expr)
 879 {
 880   int i;
 881
 882   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 883      instantiate EXPR.  */
 884   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 885     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 886 }
 887
 888
 889 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 890    block IB.  DATA_IN contains tables and descriptors for the
 891    file being read.  */
 892
 893
 894 static void
 895 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 896                                 struct data_in *data_in, tree expr)
 897 {
 898   int i;
 899   tree block;
 900
 901   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 902     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 903
 904   block = stream_read_tree (ib, data_in);
 905
 906   /* TODO: Block is stored in the locus information.  It may make more sense to
 907      to make it go via the location cache.  */
 908   if (block)
 909     {
 910       data_in->location_cache.apply_location_cache ();
 911       TREE_SET_BLOCK (expr, block);
 912     }
 913 }
 914
 915
 916 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 917    block IB.  DATA_IN contains tables and descriptors for the
 918    file being read.  */
 919
 920 static void
 921 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 922                                   struct data_in *data_in, tree expr)
 923 {
 924   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 925
 926   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 927
 928   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 929      the limited cases we can handle - those that represent inlined
 930      function scopes.  For the rest them on the floor instead of ICEing in
 931      dwarf2out.c.  */
 932   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 933   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 934      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 935      dwarf2out.c.  */
 936
 937   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 938      streaming time.  */
 939
 940   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 941      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 942      stream the child relationship explicitly.  */
 943   if (BLOCK_SUPERCONTEXT (expr)
 944       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 945     {
 946       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 947       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 948     }
 949
 950   /* The global block is rooted at the TU decl.  Hook it here to
 951      avoid the need to stream in this block during WPA time.  */
 952   else if (BLOCK_SUPERCONTEXT (expr)
 953            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 954     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 955
 956   /* The function-level block is connected at the time we read in
 957      function bodies for the same reason.  */
 958 }
 959
 960
 961 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 962    block IB.  DATA_IN contains tables and descriptors for the
 963    file being read.  */
 964
 965 static void
 966 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 967                                   struct data_in *data_in, tree expr)
 968 {
 969   unsigned i;
 970   tree t;
 971
 972   /* Note that the number of slots in EXPR was read in
 973      streamer_alloc_tree when instantiating EXPR.  However, the
 974      vector is empty so we cannot rely on vec::length to know how many
 975      elements to read.  So, this list is emitted as a 0-terminated
 976      list on the writer side.  */
 977   do
 978     {
 979       t = stream_read_tree (ib, data_in);
 980       if (t)
 981         BINFO_BASE_BINFOS (expr)->quick_push (t);
 982     }
 983   while (t);
 984
 985   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 986   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 987   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 988
 989   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 990      unpacking the bitfield section.  */
 991   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 992     {
 993       tree a = stream_read_tree (ib, data_in);
 994       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 995     }
 996   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 997      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 998 }
 999
1000
1001 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1002    input block IB.  DATA_IN contains tables and descriptors for the
1003    file being read.  */
1004
1005 static void
1006 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1007                                         struct data_in *data_in, tree expr)
1008 {
1009   unsigned i;
1010
1011   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1012     {
1013       constructor_elt e;
1014       e.index = stream_read_tree (ib, data_in);
1015       e.value = stream_read_tree (ib, data_in);
1016       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1017     }
1018 }
1019
1020
1021 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1022    input block IB.  DATA_IN contains tables and descriptors for the
1023    file being read.  */
1024
1025 static void
1026 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1027                                        struct data_in *data_in, tree expr)
1028 {
1029   int i;
1030
1031   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1032     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1033   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1034 }
1035
1036
1037 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1038    contains tables and descriptors for the file being read.  */
1039
1040 void
1041 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1042                          tree expr)
1043 {
1044   enum tree_code code;
1045
1046   code = TREE_CODE (expr);
1047
1048   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1049     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1050
1051   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1052     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1053
1054   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1055     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1056
1057   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1058     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1059
1060   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1061     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1062
1063   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1064     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1065
1066   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1067     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1068
1069   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1070     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1071
1072   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1073     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1074
1075   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1076     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1077
1078   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1079     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1080
1081   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1082     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1083
1084   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1085     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1086
1087   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1088     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1089
1090   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1091     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1092
1093   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1094     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1095
1096   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1097     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1098
1099   if (code == OMP_CLAUSE)
1100     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1101 }
1102
1103
1104 /* Read an index IX from input block IB and return the tree node at
1105    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1106
1107 tree
1108 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1109 {
1110   unsigned HOST_WIDE_INT ix;
1111   tree result;
1112   enum LTO_tags expected_tag;
1113
1114   ix = streamer_read_uhwi (ib);
1115   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1116
1117   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1118   gcc_assert (result
1119               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1120
1121   return result;
1122 }
1123
1124
1125 /* Read a code and class from input block IB and return the
1126    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1127
1128 tree
1129 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1130 {
1131   enum built_in_class fclass;
1132   enum built_in_function fcode;
1133   const char *asmname;
1134   tree result;
1135
1136   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1137   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1138
1139   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1140
1141   if (fclass == BUILT_IN_NORMAL)
1142     {
1143       if (fcode >= END_BUILTINS)
1144         fatal_error (input_location,
1145                      "machine independent builtin code out of range");
1146       result = builtin_decl_explicit (fcode);
1147       if (!result
1148           && fcode > BEGIN_CHKP_BUILTINS
1149           && fcode < END_CHKP_BUILTINS)
1150         {
1151           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1152           result = builtin_decl_explicit (fcode);
1153           result = chkp_maybe_clone_builtin_fndecl (result);
1154         }
1155       gcc_assert (result);
1156     }
1157   else if (fclass == BUILT_IN_MD)
1158     {
1159       result = targetm.builtin_decl (fcode, true);
1160       if (!result || result == error_mark_node)
1161         fatal_error (input_location, "target specific builtin not available");
1162     }
1163   else
1164     gcc_unreachable ();
1165
1166   asmname = streamer_read_string (data_in, ib);
1167   if (asmname)
1168     set_builtin_user_assembler_name (result, asmname);
1169
1170   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1171
1172   return result;
1173 }