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 "alias.h"
  27 #include "backend.h"
  28 #include "tree.h"
  29 #include "gimple.h"
  30 #include "hard-reg-set.h"
  31 #include "options.h"
  32 #include "fold-const.h"
  33 #include "stringpool.h"
  34 #include "internal-fn.h"
  35 #include "cgraph.h"
  36 #include "target.h"
  37 #include "tree-streamer.h"
  38 #include "builtins.h"
  39 #include "ipa-chkp.h"
  40 #include "gomp-constants.h"
  41
  42
  43 /* Read a STRING_CST from the string table in DATA_IN using input
  44    block IB.  */
  45
  46 tree
  47 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  48 {
  49   unsigned int len;
  50   const char * ptr;
  51
  52   ptr = streamer_read_indexed_string (data_in, ib, &len);
  53   if (!ptr)
  54     return NULL;
  55   return build_string (len, ptr);
  56 }
  57
  58
  59 /* Read an IDENTIFIER from the string table in DATA_IN using input
  60    block IB.  */
  61
  62 static tree
  63 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  64 {
  65   unsigned int len;
  66   const char *ptr;
  67
  68   ptr = streamer_read_indexed_string (data_in, ib, &len);
  69   if (!ptr)
  70     return NULL;
  71   return get_identifier_with_length (ptr, len);
  72 }
  73
  74
  75 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  76    tables and descriptors for the file being read.  */
  77
  78 tree
  79 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  80 {
  81   tree first, prev, curr;
  82
  83   /* The chain is written as NULL terminated list of trees.  */
  84   first = prev = NULL_TREE;
  85   do
  86     {
  87       curr = stream_read_tree (ib, data_in);
  88       if (prev)
  89         TREE_CHAIN (prev) = curr;
  90       else
  91         first = curr;
  92
  93       prev = curr;
  94     }
  95   while (curr);
  96
  97   return first;
  98 }
  99
 100
 101 /* Unpack all the non-pointer fields of the TS_BASE structure of
 102    expression EXPR from bitpack BP.  */
 103
 104 static inline void
 105 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 106 {
 107   /* Note that the code for EXPR has already been unpacked to create EXPR in
 108      streamer_alloc_tree.  */
 109   if (!TYPE_P (expr))
 110     {
 111       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 112       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 113       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 114
 115       /* TREE_PUBLIC is used on types to indicate that the type
 116          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 117          so we skip it here.  */
 118       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 119     }
 120   else
 121     bp_unpack_value (bp, 4);
 122   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 123   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 124   if (DECL_P (expr))
 125     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 126   else if (TYPE_P (expr))
 127     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 128   else
 129     bp_unpack_value (bp, 1);
 130   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 131   if (TYPE_P (expr))
 132     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   else
 134     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 135   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   if (TREE_CODE (expr) != TREE_BINFO)
 138     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 139   else
 140     bp_unpack_value (bp, 1);
 141   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 142   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 143   if (TYPE_P (expr))
 144     {
 145       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 146       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 147     }
 148   else if (TREE_CODE (expr) == SSA_NAME)
 149     {
 150       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 151       bp_unpack_value (bp, 8);
 152     }
 153   else
 154     bp_unpack_value (bp, 9);
 155 }
 156
 157
 158 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 159    expression EXPR from bitpack BP.  */
 160
 161 static void
 162 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 163 {
 164   int i;
 165   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 166     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 167 }
 168
 169
 170 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 171    expression EXPR from bitpack BP.  */
 172
 173 static void
 174 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 175 {
 176   unsigned i;
 177   REAL_VALUE_TYPE r;
 178   REAL_VALUE_TYPE *rp;
 179
 180   /* Clear all bits of the real value type so that we can later do
 181      bitwise comparisons to see if two values are the same.  */
 182   memset (&r, 0, sizeof r);
 183   r.cl = (unsigned) bp_unpack_value (bp, 2);
 184   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 185   r.sign = (unsigned) bp_unpack_value (bp, 1);
 186   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 187   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 188   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 189   for (i = 0; i < SIGSZ; i++)
 190     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 191
 192   rp = ggc_alloc<real_value> ();
 193   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 194   TREE_REAL_CST_PTR (expr) = rp;
 195 }
 196
 197
 198 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 199    expression EXPR from bitpack BP.  */
 200
 201 static void
 202 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 203 {
 204   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 205   fp->mode = bp_unpack_machine_mode (bp);
 206   fp->data.low = bp_unpack_var_len_int (bp);
 207   fp->data.high = bp_unpack_var_len_int (bp);
 208   TREE_FIXED_CST_PTR (expr) = fp;
 209 }
 210
 211 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 212    of expression EXPR from bitpack BP.  */
 213
 214 static void
 215 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 216 {
 217   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 218   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 219   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 220   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 221   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 222   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 223   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 224   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 225   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 226   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 227   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 228 #ifdef ACCEL_COMPILER
 229   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 230     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 231 #endif
 232   if (TREE_CODE (expr) == LABEL_DECL)
 233     {
 234       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 235
 236       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 237          force gimple_set_bb to recreate label_to_block_map.  */
 238       LABEL_DECL_UID (expr) = -1;
 239     }
 240
 241   if (TREE_CODE (expr) == FIELD_DECL)
 242     {
 243       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 244       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 245       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 246     }
 247
 248   if (TREE_CODE (expr) == VAR_DECL)
 249     {
 250       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 251       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 252     }
 253
 254   if (TREE_CODE (expr) == RESULT_DECL
 255       || TREE_CODE (expr) == PARM_DECL
 256       || TREE_CODE (expr) == VAR_DECL)
 257     {
 258       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 259       if (TREE_CODE (expr) == VAR_DECL
 260           || TREE_CODE (expr) == PARM_DECL)
 261         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 262     }
 263 }
 264
 265
 266 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 267    of expression EXPR from bitpack BP.  */
 268
 269 static void
 270 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 271 {
 272   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 273 }
 274
 275
 276 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 277    of expression EXPR from bitpack BP.  */
 278
 279 static void
 280 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 281 {
 282   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 283   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 284   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 285   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 286   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 287   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 288   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 289
 290   if (TREE_CODE (expr) == VAR_DECL)
 291     {
 292       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 293       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 294     }
 295
 296   if (TREE_CODE (expr) == FUNCTION_DECL)
 297     {
 298       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 299       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 300       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 301     }
 302 }
 303
 304
 305 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 306    of expression EXPR from bitpack BP.  */
 307
 308 static void
 309 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 310 {
 311   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 312                                                BUILT_IN_LAST);
 313   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 314   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 315   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 316   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 317   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 318   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 319   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 325                         = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 331     {
 332       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 333                                                                             12);
 334       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 335           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 336         fatal_error (input_location,
 337                      "machine independent builtin code out of range");
 338       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 339         {
 340           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 341           if (!result || result == error_mark_node)
 342             fatal_error (input_location,
 343                          "target specific builtin not available");
 344         }
 345     }
 346 }
 347
 348
 349 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 350    of expression EXPR from bitpack BP.  */
 351
 352 static void
 353 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 354 {
 355   machine_mode mode;
 356
 357   mode = bp_unpack_machine_mode (bp);
 358   SET_TYPE_MODE (expr, mode);
 359   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 360   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 361      no streaming.  */
 362   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 363   if (RECORD_OR_UNION_TYPE_P (expr))
 364     {
 365       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 366       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 367     }
 368   else if (TREE_CODE (expr) == ARRAY_TYPE)
 369     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 370   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 371   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 372   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 373   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 374   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 375   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 376 #ifdef ACCEL_COMPILER
 377   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 378     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 379 #endif
 380   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 381 }
 382
 383
 384 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 385    of expression EXPR from bitpack BP.  */
 386
 387 static void
 388 unpack_ts_block_value_fields (struct data_in *data_in,
 389                               struct bitpack_d *bp, tree expr)
 390 {
 391   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 392   /* BLOCK_NUMBER is recomputed.  */
 393   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 394 }
 395
 396 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 397    structure of expression EXPR from bitpack BP.  */
 398
 399 static void
 400 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 401                                               struct bitpack_d *bp, tree expr)
 402 {
 403   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 404   vec_safe_push (all_translation_units, expr);
 405 }
 406
 407
 408 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 409    structure of expression EXPR from bitpack BP.  */
 410
 411 static void
 412 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 413                                    struct bitpack_d *bp, tree expr)
 414 {
 415   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 416   switch (OMP_CLAUSE_CODE (expr))
 417     {
 418     case OMP_CLAUSE_DEFAULT:
 419       OMP_CLAUSE_DEFAULT_KIND (expr)
 420         = bp_unpack_enum (bp, omp_clause_default_kind,
 421                           OMP_CLAUSE_DEFAULT_LAST);
 422       break;
 423     case OMP_CLAUSE_SCHEDULE:
 424       OMP_CLAUSE_SCHEDULE_KIND (expr)
 425         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 426                           OMP_CLAUSE_SCHEDULE_LAST);
 427       break;
 428     case OMP_CLAUSE_DEPEND:
 429       OMP_CLAUSE_DEPEND_KIND (expr)
 430         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 431       break;
 432     case OMP_CLAUSE_MAP:
 433       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 434                                                      GOMP_MAP_LAST));
 435       break;
 436     case OMP_CLAUSE_PROC_BIND:
 437       OMP_CLAUSE_PROC_BIND_KIND (expr)
 438         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 439                           OMP_CLAUSE_PROC_BIND_LAST);
 440       break;
 441     case OMP_CLAUSE_REDUCTION:
 442       OMP_CLAUSE_REDUCTION_CODE (expr)
 443         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 444       break;
 445     default:
 446       break;
 447     }
 448 }
 449
 450
 451 /* Read all the language-independent bitfield values for EXPR from IB.
 452    Return the partially unpacked bitpack so the caller can unpack any other
 453    bitfield values that the writer may have written.  */
 454
 455 void
 456 streamer_read_tree_bitfields (struct lto_input_block *ib,
 457                               struct data_in *data_in, tree expr)
 458 {
 459   enum tree_code code;
 460   struct bitpack_d bp;
 461
 462   /* Read the bitpack of non-pointer values from IB.  */
 463   bp = streamer_read_bitpack (ib);
 464
 465   /* The first word in BP contains the code of the tree that we
 466      are about to read.  */
 467   code = (enum tree_code) bp_unpack_value (&bp, 16);
 468   lto_tag_check (lto_tree_code_to_tag (code),
 469                  lto_tree_code_to_tag (TREE_CODE (expr)));
 470
 471   /* Note that all these functions are highly sensitive to changes in
 472      the types and sizes of each of the fields being packed.  */
 473   unpack_ts_base_value_fields (&bp, expr);
 474
 475   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 476     unpack_ts_int_cst_value_fields (&bp, expr);
 477
 478   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 479     unpack_ts_real_cst_value_fields (&bp, expr);
 480
 481   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 482     unpack_ts_fixed_cst_value_fields (&bp, expr);
 483
 484   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 485     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 486
 487   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 488     unpack_ts_decl_common_value_fields (&bp, expr);
 489
 490   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 491     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 492
 493   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 494     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 497     unpack_ts_function_decl_value_fields (&bp, expr);
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 500     unpack_ts_type_common_value_fields (&bp, expr);
 501
 502   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 503     {
 504       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 505       if (code == MEM_REF
 506           || code == TARGET_MEM_REF)
 507         {
 508           MR_DEPENDENCE_CLIQUE (expr)
 509             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 510           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 511             MR_DEPENDENCE_BASE (expr)
 512               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 513         }
 514     }
 515
 516   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 517     unpack_ts_block_value_fields (data_in, &bp, expr);
 518
 519   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 520     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 521
 522   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 523     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 524
 525   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 526     {
 527       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 528       if (length > 0)
 529         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 530     }
 531
 532   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 533     {
 534       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 535       if (length > 0)
 536         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 537     }
 538
 539 #ifndef ACCEL_COMPILER
 540   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 541     {
 542       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 543       if (targetm.target_option.post_stream_in)
 544         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 545     }
 546 #endif
 547
 548   if (code == OMP_CLAUSE)
 549     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 550 }
 551
 552
 553 /* Materialize a new tree from input block IB using descriptors in
 554    DATA_IN.  The code for the new tree should match TAG.  Store in
 555    *IX_P the index into the reader cache where the new tree is stored.  */
 556
 557 tree
 558 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 559                      enum LTO_tags tag)
 560 {
 561   enum tree_code code;
 562   tree result;
 563 #ifdef LTO_STREAMER_DEBUG
 564   HOST_WIDE_INT orig_address_in_writer;
 565 #endif
 566
 567   result = NULL_TREE;
 568
 569 #ifdef LTO_STREAMER_DEBUG
 570   /* Read the word representing the memory address for the tree
 571      as it was written by the writer.  This is useful when
 572      debugging differences between the writer and reader.  */
 573   orig_address_in_writer = streamer_read_hwi (ib);
 574   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 575 #endif
 576
 577   code = lto_tag_to_tree_code (tag);
 578
 579   /* We should never see an SSA_NAME tree.  Only the version numbers of
 580      SSA names are ever written out.  See input_ssa_names.  */
 581   gcc_assert (code != SSA_NAME);
 582
 583   /* Instantiate a new tree using the header data.  */
 584   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 585     result = streamer_read_string_cst (data_in, ib);
 586   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 587     result = input_identifier (data_in, ib);
 588   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 589     {
 590       HOST_WIDE_INT len = streamer_read_hwi (ib);
 591       result = make_tree_vec (len);
 592     }
 593   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 594     {
 595       HOST_WIDE_INT len = streamer_read_hwi (ib);
 596       result = make_vector (len);
 597     }
 598   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 599     {
 600       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 601       result = make_tree_binfo (len);
 602     }
 603   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 604     {
 605       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 606       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 607       result = make_int_cst (len, ext_len);
 608     }
 609   else if (code == CALL_EXPR)
 610     {
 611       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 612       return build_vl_exp (CALL_EXPR, nargs + 3);
 613     }
 614   else if (code == OMP_CLAUSE)
 615     {
 616       enum omp_clause_code subcode
 617         = (enum omp_clause_code) streamer_read_uhwi (ib);
 618       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 619     }
 620   else
 621     {
 622       /* For all other nodes, materialize the tree with a raw
 623          make_node call.  */
 624       result = make_node (code);
 625     }
 626
 627 #ifdef LTO_STREAMER_DEBUG
 628   /* Store the original address of the tree as seen by the writer
 629      in RESULT's aux field.  This is useful when debugging streaming
 630      problems.  This way, a debugging session can be started on
 631      both writer and reader with a breakpoint using this address
 632      value in both.  */
 633   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 634 #endif
 635
 636   return result;
 637 }
 638
 639
 640 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 641    block IB.  DATA_IN contains tables and descriptors for the
 642    file being read.  */
 643
 644
 645 static void
 646 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 647                                    struct data_in *data_in, tree expr)
 648 {
 649   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 650     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 651 }
 652
 653
 654 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 655    block IB.  DATA_IN contains tables and descriptors for the
 656    file being read.  */
 657
 658 static void
 659 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 660                                    struct data_in *data_in, tree expr)
 661 {
 662   unsigned i;
 663   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 664     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 665 }
 666
 667
 668 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 669    block IB.  DATA_IN contains tables and descriptors for the
 670    file being read.  */
 671
 672 static void
 673 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 674                                     struct data_in *data_in, tree expr)
 675 {
 676   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 677   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 678 }
 679
 680
 681 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 682    from input block IB.  DATA_IN contains tables and descriptors for the
 683    file being read.  */
 684
 685 static void
 686 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 687                                          struct data_in *data_in, tree expr)
 688 {
 689   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 690   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 691 }
 692
 693
 694 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 695    input block IB.  DATA_IN contains tables and descriptors for the
 696    file being read.  */
 697
 698 static void
 699 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 700                                         struct data_in *data_in, tree expr)
 701 {
 702   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 703   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 704   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 705
 706   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 707      for early inlining so drop it on the floor instead of ICEing in
 708      dwarf2out.c.  */
 709
 710   if ((TREE_CODE (expr) == VAR_DECL
 711        || TREE_CODE (expr) == PARM_DECL)
 712       && DECL_HAS_VALUE_EXPR_P (expr))
 713     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 714
 715   if (TREE_CODE (expr) == VAR_DECL)
 716     {
 717       tree dexpr = stream_read_tree (ib, data_in);
 718       if (dexpr)
 719         SET_DECL_DEBUG_EXPR (expr, dexpr);
 720     }
 721 }
 722
 723
 724 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 725    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 726    file being read.  */
 727
 728 static void
 729 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 730                                             struct data_in *data_in, tree expr)
 731 {
 732   if (TREE_CODE (expr) == TYPE_DECL)
 733     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 734 }
 735
 736
 737 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 738    from input block IB.  DATA_IN contains tables and descriptors for the
 739    file being read.  */
 740
 741 static void
 742 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 743                                           struct data_in *data_in, tree expr)
 744 {
 745   tree id;
 746
 747   id = stream_read_tree (ib, data_in);
 748   if (id)
 749     {
 750       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 751       SET_DECL_ASSEMBLER_NAME (expr, id);
 752     }
 753 }
 754
 755
 756 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 757    input block IB.  DATA_IN contains tables and descriptors for the
 758    file being read.  */
 759
 760 static void
 761 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 762                                        struct data_in *data_in, tree expr)
 763 {
 764   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 765   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 766   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 767   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 768   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 769 }
 770
 771
 772 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 773    from input block IB.  DATA_IN contains tables and descriptors for the
 774    file being read.  */
 775
 776 static void
 777 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 778                                           struct data_in *data_in, tree expr)
 779 {
 780   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 781   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 782   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 783 #ifndef ACCEL_COMPILER
 784   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 785 #endif
 786   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 787
 788   /* If the file contains a function with an EH personality set,
 789      then it was compiled with -fexceptions.  In that case, initialize
 790      the backend EH machinery.  */
 791   if (DECL_FUNCTION_PERSONALITY (expr))
 792     lto_init_eh ();
 793 }
 794
 795
 796 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 797    input block IB.  DATA_IN contains tables and descriptors for the file
 798    being read.  */
 799
 800 static void
 801 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 802                                         struct data_in *data_in, tree expr)
 803 {
 804   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 805   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 806   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 807   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 808   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 809      reconstructed during fixup.  */
 810   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 811      during fixup.  */
 812   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 813   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 814   /* TYPE_CANONICAL gets re-computed during type merging.  */
 815   TYPE_CANONICAL (expr) = NULL_TREE;
 816   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 817 }
 818
 819 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 820    from input block IB.  DATA_IN contains tables and descriptors for the
 821    file being read.  */
 822
 823 static void
 824 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 825                                             struct data_in *data_in,
 826                                             tree expr)
 827 {
 828   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 829     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 830   else if (TREE_CODE (expr) == ARRAY_TYPE)
 831     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 832   else if (RECORD_OR_UNION_TYPE_P (expr))
 833     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 834   else if (TREE_CODE (expr) == FUNCTION_TYPE
 835            || TREE_CODE (expr) == METHOD_TYPE)
 836     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 837
 838   if (!POINTER_TYPE_P (expr))
 839     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 840   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 841   if (RECORD_OR_UNION_TYPE_P (expr))
 842     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 843 }
 844
 845
 846 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 847    block IB.  DATA_IN contains tables and descriptors for the
 848    file being read.  */
 849
 850 static void
 851 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 852                                  struct data_in *data_in, tree expr)
 853 {
 854   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 855   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 856   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 857 }
 858
 859
 860 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 861    block IB.  DATA_IN contains tables and descriptors for the
 862    file being read.  */
 863
 864 static void
 865 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 866                                 struct data_in *data_in, tree expr)
 867 {
 868   int i;
 869
 870   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 871      instantiate EXPR.  */
 872   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 873     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 874 }
 875
 876
 877 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 878    block IB.  DATA_IN contains tables and descriptors for the
 879    file being read.  */
 880
 881
 882 static void
 883 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 884                                 struct data_in *data_in, tree expr)
 885 {
 886   int i;
 887   tree block;
 888
 889   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 890     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 891
 892   block = stream_read_tree (ib, data_in);
 893
 894   /* TODO: Block is stored in the locus information.  It may make more sense to
 895      to make it go via the location cache.  */
 896   if (block)
 897     {
 898       data_in->location_cache.apply_location_cache ();
 899       TREE_SET_BLOCK (expr, block);
 900     }
 901 }
 902
 903
 904 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 905    block IB.  DATA_IN contains tables and descriptors for the
 906    file being read.  */
 907
 908 static void
 909 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 910                                   struct data_in *data_in, tree expr)
 911 {
 912   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 913
 914   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 915
 916   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 917      the limited cases we can handle - those that represent inlined
 918      function scopes.  For the rest them on the floor instead of ICEing in
 919      dwarf2out.c.  */
 920   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 921   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 922      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 923      dwarf2out.c.  */
 924
 925   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 926      streaming time.  */
 927
 928   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 929      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 930      stream the child relationship explicitly.  */
 931   if (BLOCK_SUPERCONTEXT (expr)
 932       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 933     {
 934       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 935       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 936     }
 937
 938   /* The global block is rooted at the TU decl.  Hook it here to
 939      avoid the need to stream in this block during WPA time.  */
 940   else if (BLOCK_SUPERCONTEXT (expr)
 941            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 942     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 943
 944   /* The function-level block is connected at the time we read in
 945      function bodies for the same reason.  */
 946 }
 947
 948
 949 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 950    block IB.  DATA_IN contains tables and descriptors for the
 951    file being read.  */
 952
 953 static void
 954 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 955                                   struct data_in *data_in, tree expr)
 956 {
 957   unsigned i;
 958   tree t;
 959
 960   /* Note that the number of slots in EXPR was read in
 961      streamer_alloc_tree when instantiating EXPR.  However, the
 962      vector is empty so we cannot rely on vec::length to know how many
 963      elements to read.  So, this list is emitted as a 0-terminated
 964      list on the writer side.  */
 965   do
 966     {
 967       t = stream_read_tree (ib, data_in);
 968       if (t)
 969         BINFO_BASE_BINFOS (expr)->quick_push (t);
 970     }
 971   while (t);
 972
 973   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 974   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 975   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 976
 977   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 978      unpacking the bitfield section.  */
 979   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 980     {
 981       tree a = stream_read_tree (ib, data_in);
 982       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 983     }
 984   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 985      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 986 }
 987
 988
 989 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 990    input block IB.  DATA_IN contains tables and descriptors for the
 991    file being read.  */
 992
 993 static void
 994 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 995                                         struct data_in *data_in, tree expr)
 996 {
 997   unsigned i;
 998
 999   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1000     {
1001       constructor_elt e;
1002       e.index = stream_read_tree (ib, data_in);
1003       e.value = stream_read_tree (ib, data_in);
1004       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1005     }
1006 }
1007
1008
1009 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1010    input block IB.  DATA_IN contains tables and descriptors for the
1011    file being read.  */
1012
1013 static void
1014 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1015                                        struct data_in *data_in, tree expr)
1016 {
1017   int i;
1018
1019   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1020     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1021   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1022 }
1023
1024
1025 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1026    contains tables and descriptors for the file being read.  */
1027
1028 void
1029 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1030                          tree expr)
1031 {
1032   enum tree_code code;
1033
1034   code = TREE_CODE (expr);
1035
1036   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1037     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1038
1039   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1040     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1041
1042   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1043     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1044
1045   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1046     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1047
1048   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1049     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1050
1051   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1052     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1053
1054   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1055     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1056
1057   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1058     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1059
1060   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1061     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1062
1063   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1064     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1065
1066   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1067     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1068
1069   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1070     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1071
1072   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1073     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1074
1075   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1076     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1077
1078   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1079     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1080
1081   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1082     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1083
1084   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1085     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1086
1087   if (code == OMP_CLAUSE)
1088     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1089 }
1090
1091
1092 /* Read an index IX from input block IB and return the tree node at
1093    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1094
1095 tree
1096 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1097 {
1098   unsigned HOST_WIDE_INT ix;
1099   tree result;
1100   enum LTO_tags expected_tag;
1101
1102   ix = streamer_read_uhwi (ib);
1103   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1104
1105   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1106   gcc_assert (result
1107               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1108
1109   return result;
1110 }
1111
1112
1113 /* Read a code and class from input block IB and return the
1114    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1115
1116 tree
1117 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1118 {
1119   enum built_in_class fclass;
1120   enum built_in_function fcode;
1121   const char *asmname;
1122   tree result;
1123
1124   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1125   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1126
1127   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1128
1129   if (fclass == BUILT_IN_NORMAL)
1130     {
1131       if (fcode >= END_BUILTINS)
1132         fatal_error (input_location,
1133                      "machine independent builtin code out of range");
1134       result = builtin_decl_explicit (fcode);
1135       if (!result
1136           && fcode > BEGIN_CHKP_BUILTINS
1137           && fcode < END_CHKP_BUILTINS)
1138         {
1139           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1140           result = builtin_decl_explicit (fcode);
1141           result = chkp_maybe_clone_builtin_fndecl (result);
1142         }
1143       gcc_assert (result);
1144     }
1145   else if (fclass == BUILT_IN_MD)
1146     {
1147       result = targetm.builtin_decl (fcode, true);
1148       if (!result || result == error_mark_node)
1149         fatal_error (input_location, "target specific builtin not available");
1150     }
1151   else
1152     gcc_unreachable ();
1153
1154   asmname = streamer_read_string (data_in, ib);
1155   if (asmname)
1156     set_builtin_user_assembler_name (result, asmname);
1157
1158   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1159
1160   return result;
1161 }