gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2016 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 "backend.h"
  26 #include "target.h"
  27 #include "tree.h"
  28 #include "gimple.h"
  29 #include "stringpool.h"
  30 #include "tree-streamer.h"
  31 #include "cgraph.h"
  32 #include "builtins.h"
  33 #include "ipa-chkp.h"
  34 #include "gomp-constants.h"
  35
  36
  37 /* Read a STRING_CST from the string table in DATA_IN using input
  38    block IB.  */
  39
  40 tree
  41 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  42 {
  43   unsigned int len;
  44   const char * ptr;
  45
  46   ptr = streamer_read_indexed_string (data_in, ib, &len);
  47   if (!ptr)
  48     return NULL;
  49   return build_string (len, ptr);
  50 }
  51
  52
  53 /* Read an IDENTIFIER from the string table in DATA_IN using input
  54    block IB.  */
  55
  56 static tree
  57 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  58 {
  59   unsigned int len;
  60   const char *ptr;
  61
  62   ptr = streamer_read_indexed_string (data_in, ib, &len);
  63   if (!ptr)
  64     return NULL;
  65   return get_identifier_with_length (ptr, len);
  66 }
  67
  68
  69 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  70    tables and descriptors for the file being read.  */
  71
  72 tree
  73 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  74 {
  75   tree first, prev, curr;
  76
  77   /* The chain is written as NULL terminated list of trees.  */
  78   first = prev = NULL_TREE;
  79   do
  80     {
  81       curr = stream_read_tree (ib, data_in);
  82       if (prev)
  83         TREE_CHAIN (prev) = curr;
  84       else
  85         first = curr;
  86
  87       prev = curr;
  88     }
  89   while (curr);
  90
  91   return first;
  92 }
  93
  94
  95 /* Unpack all the non-pointer fields of the TS_BASE structure of
  96    expression EXPR from bitpack BP.  */
  97
  98 static inline void
  99 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 100 {
 101   /* Note that the code for EXPR has already been unpacked to create EXPR in
 102      streamer_alloc_tree.  */
 103   if (!TYPE_P (expr))
 104     {
 105       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 106       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 107       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 108
 109       /* TREE_PUBLIC is used on types to indicate that the type
 110          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 111          so we skip it here.  */
 112       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 113     }
 114   else
 115     bp_unpack_value (bp, 4);
 116   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 117   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 118   if (DECL_P (expr))
 119     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 120   else if (TYPE_P (expr))
 121     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 122   else
 123     bp_unpack_value (bp, 1);
 124   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 125   if (TYPE_P (expr))
 126     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 127   else
 128     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 129   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 130   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 131   if (TREE_CODE (expr) != TREE_BINFO)
 132     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   else
 134     bp_unpack_value (bp, 1);
 135   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   if (TYPE_P (expr))
 138     {
 139       if (AGGREGATE_TYPE_P (expr))
 140         TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 141       else
 142         TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 143       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 144     }
 145   else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
 146     {
 147       REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 148       bp_unpack_value (bp, 8);
 149     }
 150   else if (TREE_CODE (expr) == SSA_NAME)
 151     {
 152       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 153       bp_unpack_value (bp, 8);
 154     }
 155   else
 156     bp_unpack_value (bp, 9);
 157 }
 158
 159
 160 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 161    expression EXPR from bitpack BP.  */
 162
 163 static void
 164 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 165 {
 166   int i;
 167   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 168     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 169 }
 170
 171
 172 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 173    expression EXPR from bitpack BP.  */
 174
 175 static void
 176 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 177 {
 178   unsigned i;
 179   REAL_VALUE_TYPE r;
 180   REAL_VALUE_TYPE *rp;
 181
 182   /* Clear all bits of the real value type so that we can later do
 183      bitwise comparisons to see if two values are the same.  */
 184   memset (&r, 0, sizeof r);
 185   r.cl = (unsigned) bp_unpack_value (bp, 2);
 186   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 187   r.sign = (unsigned) bp_unpack_value (bp, 1);
 188   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 189   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 190   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 191   for (i = 0; i < SIGSZ; i++)
 192     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 193
 194   rp = ggc_alloc<real_value> ();
 195   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 196   TREE_REAL_CST_PTR (expr) = rp;
 197 }
 198
 199
 200 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 201    expression EXPR from bitpack BP.  */
 202
 203 static void
 204 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 205 {
 206   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 207   fp->mode = bp_unpack_machine_mode (bp);
 208   fp->data.low = bp_unpack_var_len_int (bp);
 209   fp->data.high = bp_unpack_var_len_int (bp);
 210   TREE_FIXED_CST_PTR (expr) = fp;
 211 }
 212
 213 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 214    of expression EXPR from bitpack BP.  */
 215
 216 static void
 217 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 218 {
 219   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 220   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 221   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 222   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 223   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 224   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 225   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 226   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 227   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 228   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 229   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 230 #ifdef ACCEL_COMPILER
 231   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 232     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 233 #endif
 234   if (TREE_CODE (expr) == LABEL_DECL)
 235     {
 236       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 237
 238       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 239          force gimple_set_bb to recreate label_to_block_map.  */
 240       LABEL_DECL_UID (expr) = -1;
 241     }
 242
 243   if (TREE_CODE (expr) == FIELD_DECL)
 244     {
 245       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 246       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 247       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 248     }
 249
 250   if (TREE_CODE (expr) == VAR_DECL)
 251     {
 252       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 253       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 254     }
 255
 256   if (TREE_CODE (expr) == RESULT_DECL
 257       || TREE_CODE (expr) == PARM_DECL
 258       || TREE_CODE (expr) == VAR_DECL)
 259     {
 260       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 261       if (TREE_CODE (expr) == VAR_DECL
 262           || TREE_CODE (expr) == PARM_DECL)
 263         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 264     }
 265 }
 266
 267
 268 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 269    of expression EXPR from bitpack BP.  */
 270
 271 static void
 272 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 273 {
 274   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 275 }
 276
 277
 278 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 279    of expression EXPR from bitpack BP.  */
 280
 281 static void
 282 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 283 {
 284   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 285   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 286   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 287   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 288   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 289   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 290   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 291
 292   if (TREE_CODE (expr) == VAR_DECL)
 293     {
 294       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 295       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 296     }
 297
 298   if (TREE_CODE (expr) == FUNCTION_DECL)
 299     {
 300       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 301       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 302       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 303     }
 304 }
 305
 306
 307 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 308    of expression EXPR from bitpack BP.  */
 309
 310 static void
 311 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 312 {
 313   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 314                                                BUILT_IN_LAST);
 315   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 316   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 317   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 318   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 319   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 325   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 327                         = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 333     {
 334       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 335                                                                             12);
 336       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 337           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 338         fatal_error (input_location,
 339                      "machine independent builtin code out of range");
 340       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 341         {
 342           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 343           if (!result || result == error_mark_node)
 344             fatal_error (input_location,
 345                          "target specific builtin not available");
 346         }
 347     }
 348 }
 349
 350
 351 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 352    of expression EXPR from bitpack BP.  */
 353
 354 static void
 355 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 356 {
 357   machine_mode mode;
 358
 359   mode = bp_unpack_machine_mode (bp);
 360   SET_TYPE_MODE (expr, mode);
 361   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 362   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 363      no streaming.  */
 364   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 365   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 366   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 367   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 368   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 369   if (RECORD_OR_UNION_TYPE_P (expr))
 370     {
 371       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 372       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 373     }
 374   else if (TREE_CODE (expr) == ARRAY_TYPE)
 375     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 376   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 377   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 378 #ifdef ACCEL_COMPILER
 379   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 380     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 381 #endif
 382 }
 383
 384
 385 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 386    of expression EXPR from bitpack BP.  */
 387
 388 static void
 389 unpack_ts_block_value_fields (struct data_in *data_in,
 390                               struct bitpack_d *bp, tree expr)
 391 {
 392   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 393   /* BLOCK_NUMBER is recomputed.  */
 394   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 395 }
 396
 397 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 398    structure of expression EXPR from bitpack BP.  */
 399
 400 static void
 401 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 402                                               struct bitpack_d *bp, tree expr)
 403 {
 404   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 405   vec_safe_push (all_translation_units, expr);
 406 }
 407
 408
 409 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 410    structure of expression EXPR from bitpack BP.  */
 411
 412 static void
 413 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 414                                    struct bitpack_d *bp, tree expr)
 415 {
 416   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 417   switch (OMP_CLAUSE_CODE (expr))
 418     {
 419     case OMP_CLAUSE_DEFAULT:
 420       OMP_CLAUSE_DEFAULT_KIND (expr)
 421         = bp_unpack_enum (bp, omp_clause_default_kind,
 422                           OMP_CLAUSE_DEFAULT_LAST);
 423       break;
 424     case OMP_CLAUSE_SCHEDULE:
 425       OMP_CLAUSE_SCHEDULE_KIND (expr)
 426         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 427                           OMP_CLAUSE_SCHEDULE_LAST);
 428       break;
 429     case OMP_CLAUSE_DEPEND:
 430       OMP_CLAUSE_DEPEND_KIND (expr)
 431         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 432       break;
 433     case OMP_CLAUSE_MAP:
 434       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 435                                                      GOMP_MAP_LAST));
 436       break;
 437     case OMP_CLAUSE_PROC_BIND:
 438       OMP_CLAUSE_PROC_BIND_KIND (expr)
 439         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 440                           OMP_CLAUSE_PROC_BIND_LAST);
 441       break;
 442     case OMP_CLAUSE_REDUCTION:
 443       OMP_CLAUSE_REDUCTION_CODE (expr)
 444         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 445       break;
 446     default:
 447       break;
 448     }
 449 }
 450
 451
 452 /* Read all the language-independent bitfield values for EXPR from IB.
 453    Return the partially unpacked bitpack so the caller can unpack any other
 454    bitfield values that the writer may have written.  */
 455
 456 void
 457 streamer_read_tree_bitfields (struct lto_input_block *ib,
 458                               struct data_in *data_in, tree expr)
 459 {
 460   enum tree_code code;
 461   struct bitpack_d bp;
 462
 463   /* Read the bitpack of non-pointer values from IB.  */
 464   bp = streamer_read_bitpack (ib);
 465
 466   /* The first word in BP contains the code of the tree that we
 467      are about to read.  */
 468   code = (enum tree_code) bp_unpack_value (&bp, 16);
 469   lto_tag_check (lto_tree_code_to_tag (code),
 470                  lto_tree_code_to_tag (TREE_CODE (expr)));
 471
 472   /* Note that all these functions are highly sensitive to changes in
 473      the types and sizes of each of the fields being packed.  */
 474   unpack_ts_base_value_fields (&bp, expr);
 475
 476   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 477     unpack_ts_int_cst_value_fields (&bp, expr);
 478
 479   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 480     unpack_ts_real_cst_value_fields (&bp, expr);
 481
 482   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 483     unpack_ts_fixed_cst_value_fields (&bp, expr);
 484
 485   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 486     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 487
 488   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 489     unpack_ts_decl_common_value_fields (&bp, expr);
 490
 491   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 492     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 493
 494   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 495     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 496
 497   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 498     unpack_ts_function_decl_value_fields (&bp, expr);
 499
 500   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 501     unpack_ts_type_common_value_fields (&bp, expr);
 502
 503   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 504     {
 505       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 506       if (code == MEM_REF
 507           || code == TARGET_MEM_REF)
 508         {
 509           MR_DEPENDENCE_CLIQUE (expr)
 510             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 511           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 512             MR_DEPENDENCE_BASE (expr)
 513               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 514         }
 515     }
 516
 517   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 518     unpack_ts_block_value_fields (data_in, &bp, expr);
 519
 520   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 521     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 522
 523   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 524     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 525
 526   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 527     {
 528       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 529       if (length > 0)
 530         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 531     }
 532
 533   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 534     {
 535       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 536       if (length > 0)
 537         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 538     }
 539
 540 #ifndef ACCEL_COMPILER
 541   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 542     {
 543       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 544       if (targetm.target_option.post_stream_in)
 545         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 546     }
 547 #endif
 548
 549   if (code == OMP_CLAUSE)
 550     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 551 }
 552
 553
 554 /* Materialize a new tree from input block IB using descriptors in
 555    DATA_IN.  The code for the new tree should match TAG.  Store in
 556    *IX_P the index into the reader cache where the new tree is stored.  */
 557
 558 tree
 559 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 560                      enum LTO_tags tag)
 561 {
 562   enum tree_code code;
 563   tree result;
 564 #ifdef LTO_STREAMER_DEBUG
 565   HOST_WIDE_INT orig_address_in_writer;
 566 #endif
 567
 568   result = NULL_TREE;
 569
 570 #ifdef LTO_STREAMER_DEBUG
 571   /* Read the word representing the memory address for the tree
 572      as it was written by the writer.  This is useful when
 573      debugging differences between the writer and reader.  */
 574   orig_address_in_writer = streamer_read_hwi (ib);
 575   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 576 #endif
 577
 578   code = lto_tag_to_tree_code (tag);
 579
 580   /* We should never see an SSA_NAME tree.  Only the version numbers of
 581      SSA names are ever written out.  See input_ssa_names.  */
 582   gcc_assert (code != SSA_NAME);
 583
 584   /* Instantiate a new tree using the header data.  */
 585   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 586     result = streamer_read_string_cst (data_in, ib);
 587   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 588     result = input_identifier (data_in, ib);
 589   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 590     {
 591       HOST_WIDE_INT len = streamer_read_hwi (ib);
 592       result = make_tree_vec (len);
 593     }
 594   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 595     {
 596       HOST_WIDE_INT len = streamer_read_hwi (ib);
 597       result = make_vector (len);
 598     }
 599   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 600     {
 601       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 602       result = make_tree_binfo (len);
 603     }
 604   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 605     {
 606       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 607       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 608       result = make_int_cst (len, ext_len);
 609     }
 610   else if (code == CALL_EXPR)
 611     {
 612       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 613       return build_vl_exp (CALL_EXPR, nargs + 3);
 614     }
 615   else if (code == OMP_CLAUSE)
 616     {
 617       enum omp_clause_code subcode
 618         = (enum omp_clause_code) streamer_read_uhwi (ib);
 619       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 620     }
 621   else
 622     {
 623       /* For all other nodes, materialize the tree with a raw
 624          make_node call.  */
 625       result = make_node (code);
 626     }
 627
 628 #ifdef LTO_STREAMER_DEBUG
 629   /* Store the original address of the tree as seen by the writer
 630      in RESULT's aux field.  This is useful when debugging streaming
 631      problems.  This way, a debugging session can be started on
 632      both writer and reader with a breakpoint using this address
 633      value in both.  */
 634   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 635 #endif
 636
 637   return result;
 638 }
 639
 640
 641 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 642    block IB.  DATA_IN contains tables and descriptors for the
 643    file being read.  */
 644
 645
 646 static void
 647 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 648                                    struct data_in *data_in, tree expr)
 649 {
 650   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 651     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 652 }
 653
 654
 655 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 656    block IB.  DATA_IN contains tables and descriptors for the
 657    file being read.  */
 658
 659 static void
 660 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 661                                    struct data_in *data_in, tree expr)
 662 {
 663   unsigned i;
 664   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 665     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 666 }
 667
 668
 669 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 670    block IB.  DATA_IN contains tables and descriptors for the
 671    file being read.  */
 672
 673 static void
 674 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 675                                     struct data_in *data_in, tree expr)
 676 {
 677   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 678   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 679 }
 680
 681
 682 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 683    from input block IB.  DATA_IN contains tables and descriptors for the
 684    file being read.  */
 685
 686 static void
 687 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 688                                          struct data_in *data_in, tree expr)
 689 {
 690   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 691   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 692 }
 693
 694
 695 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 696    input block IB.  DATA_IN contains tables and descriptors for the
 697    file being read.  */
 698
 699 static void
 700 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 701                                         struct data_in *data_in, tree expr)
 702 {
 703   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 704   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 705   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 706
 707   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 708      for early inlining so drop it on the floor instead of ICEing in
 709      dwarf2out.c.  */
 710
 711   if ((TREE_CODE (expr) == VAR_DECL
 712        || TREE_CODE (expr) == PARM_DECL)
 713       && DECL_HAS_VALUE_EXPR_P (expr))
 714     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 715
 716   if (TREE_CODE (expr) == VAR_DECL)
 717     {
 718       tree dexpr = stream_read_tree (ib, data_in);
 719       if (dexpr)
 720         SET_DECL_DEBUG_EXPR (expr, dexpr);
 721     }
 722 }
 723
 724
 725 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 726    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 727    file being read.  */
 728
 729 static void
 730 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 731                                             struct data_in *data_in, tree expr)
 732 {
 733   if (TREE_CODE (expr) == TYPE_DECL)
 734     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 735 }
 736
 737
 738 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 739    from input block IB.  DATA_IN contains tables and descriptors for the
 740    file being read.  */
 741
 742 static void
 743 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 744                                           struct data_in *data_in, tree expr)
 745 {
 746   tree id;
 747
 748   id = stream_read_tree (ib, data_in);
 749   if (id)
 750     {
 751       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 752       SET_DECL_ASSEMBLER_NAME (expr, id);
 753     }
 754 }
 755
 756
 757 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 758    input block IB.  DATA_IN contains tables and descriptors for the
 759    file being read.  */
 760
 761 static void
 762 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 763                                        struct data_in *data_in, tree expr)
 764 {
 765   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 766   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 767   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 768   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 769   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 770 }
 771
 772
 773 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 774    from input block IB.  DATA_IN contains tables and descriptors for the
 775    file being read.  */
 776
 777 static void
 778 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 779                                           struct data_in *data_in, tree expr)
 780 {
 781   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 782   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 783   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 784 #ifndef ACCEL_COMPILER
 785   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 786 #endif
 787   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 788
 789   /* If the file contains a function with an EH personality set,
 790      then it was compiled with -fexceptions.  In that case, initialize
 791      the backend EH machinery.  */
 792   if (DECL_FUNCTION_PERSONALITY (expr))
 793     lto_init_eh ();
 794 }
 795
 796
 797 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 798    input block IB.  DATA_IN contains tables and descriptors for the file
 799    being read.  */
 800
 801 static void
 802 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 803                                         struct data_in *data_in, tree expr)
 804 {
 805   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 806   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 807   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 808   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 809   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 810      reconstructed during fixup.  */
 811   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 812      during fixup.  */
 813   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 814   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 815   /* TYPE_CANONICAL gets re-computed during type merging.  */
 816   TYPE_CANONICAL (expr) = NULL_TREE;
 817   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 818 }
 819
 820 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 821    from input block IB.  DATA_IN contains tables and descriptors for the
 822    file being read.  */
 823
 824 static void
 825 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 826                                             struct data_in *data_in,
 827                                             tree expr)
 828 {
 829   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 830     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 831   else if (TREE_CODE (expr) == ARRAY_TYPE)
 832     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 833   else if (RECORD_OR_UNION_TYPE_P (expr))
 834     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 835   else if (TREE_CODE (expr) == FUNCTION_TYPE
 836            || TREE_CODE (expr) == METHOD_TYPE)
 837     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 838
 839   if (!POINTER_TYPE_P (expr))
 840     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 841   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 842   if (RECORD_OR_UNION_TYPE_P (expr))
 843     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 844 }
 845
 846
 847 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 848    block IB.  DATA_IN contains tables and descriptors for the
 849    file being read.  */
 850
 851 static void
 852 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 853                                  struct data_in *data_in, tree expr)
 854 {
 855   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 856   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 857   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 858 }
 859
 860
 861 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 862    block IB.  DATA_IN contains tables and descriptors for the
 863    file being read.  */
 864
 865 static void
 866 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 867                                 struct data_in *data_in, tree expr)
 868 {
 869   int i;
 870
 871   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 872      instantiate EXPR.  */
 873   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 874     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 875 }
 876
 877
 878 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 879    block IB.  DATA_IN contains tables and descriptors for the
 880    file being read.  */
 881
 882
 883 static void
 884 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 885                                 struct data_in *data_in, tree expr)
 886 {
 887   int i;
 888   tree block;
 889
 890   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 891     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 892
 893   block = stream_read_tree (ib, data_in);
 894
 895   /* TODO: Block is stored in the locus information.  It may make more sense to
 896      to make it go via the location cache.  */
 897   if (block)
 898     {
 899       data_in->location_cache.apply_location_cache ();
 900       TREE_SET_BLOCK (expr, block);
 901     }
 902 }
 903
 904
 905 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 906    block IB.  DATA_IN contains tables and descriptors for the
 907    file being read.  */
 908
 909 static void
 910 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 911                                   struct data_in *data_in, tree expr)
 912 {
 913   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 914
 915   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 916
 917   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 918      the limited cases we can handle - those that represent inlined
 919      function scopes.  For the rest them on the floor instead of ICEing in
 920      dwarf2out.c.  */
 921   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 922   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 923      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 924      dwarf2out.c.  */
 925
 926   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 927      streaming time.  */
 928
 929   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 930      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 931      stream the child relationship explicitly.  */
 932   if (BLOCK_SUPERCONTEXT (expr)
 933       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 934     {
 935       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 936       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 937     }
 938
 939   /* The global block is rooted at the TU decl.  Hook it here to
 940      avoid the need to stream in this block during WPA time.  */
 941   else if (BLOCK_SUPERCONTEXT (expr)
 942            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 943     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 944
 945   /* The function-level block is connected at the time we read in
 946      function bodies for the same reason.  */
 947 }
 948
 949
 950 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 951    block IB.  DATA_IN contains tables and descriptors for the
 952    file being read.  */
 953
 954 static void
 955 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 956                                   struct data_in *data_in, tree expr)
 957 {
 958   unsigned i;
 959   tree t;
 960
 961   /* Note that the number of slots in EXPR was read in
 962      streamer_alloc_tree when instantiating EXPR.  However, the
 963      vector is empty so we cannot rely on vec::length to know how many
 964      elements to read.  So, this list is emitted as a 0-terminated
 965      list on the writer side.  */
 966   do
 967     {
 968       t = stream_read_tree (ib, data_in);
 969       if (t)
 970         BINFO_BASE_BINFOS (expr)->quick_push (t);
 971     }
 972   while (t);
 973
 974   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 975   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 976   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 977
 978   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 979      unpacking the bitfield section.  */
 980   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 981     {
 982       tree a = stream_read_tree (ib, data_in);
 983       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 984     }
 985   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 986      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 987 }
 988
 989
 990 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 991    input block IB.  DATA_IN contains tables and descriptors for the
 992    file being read.  */
 993
 994 static void
 995 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 996                                         struct data_in *data_in, tree expr)
 997 {
 998   unsigned i;
 999
1000   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1001     {
1002       constructor_elt e;
1003       e.index = stream_read_tree (ib, data_in);
1004       e.value = stream_read_tree (ib, data_in);
1005       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1006     }
1007 }
1008
1009
1010 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1011    input block IB.  DATA_IN contains tables and descriptors for the
1012    file being read.  */
1013
1014 static void
1015 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1016                                        struct data_in *data_in, tree expr)
1017 {
1018   int i;
1019
1020   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1021     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1022   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1023 }
1024
1025
1026 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1027    contains tables and descriptors for the file being read.  */
1028
1029 void
1030 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1031                          tree expr)
1032 {
1033   enum tree_code code;
1034
1035   code = TREE_CODE (expr);
1036
1037   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1038     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1039
1040   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1041     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1042
1043   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1044     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1045
1046   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1047     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1048
1049   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1050     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1051
1052   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1053     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1054
1055   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1056     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1057
1058   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1059     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1062     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1065     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1068     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1069
1070   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1071     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1072
1073   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1074     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1075
1076   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1077     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1078
1079   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1080     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1081
1082   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1083     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1084
1085   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1086     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1087
1088   if (code == OMP_CLAUSE)
1089     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1090 }
1091
1092
1093 /* Read an index IX from input block IB and return the tree node at
1094    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1095
1096 tree
1097 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1098 {
1099   unsigned HOST_WIDE_INT ix;
1100   tree result;
1101   enum LTO_tags expected_tag;
1102
1103   ix = streamer_read_uhwi (ib);
1104   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1105
1106   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1107   gcc_assert (result
1108               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1109
1110   return result;
1111 }
1112
1113
1114 /* Read a code and class from input block IB and return the
1115    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1116
1117 tree
1118 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1119 {
1120   enum built_in_class fclass;
1121   enum built_in_function fcode;
1122   const char *asmname;
1123   tree result;
1124
1125   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1126   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1127
1128   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1129
1130   if (fclass == BUILT_IN_NORMAL)
1131     {
1132       if (fcode >= END_BUILTINS)
1133         fatal_error (input_location,
1134                      "machine independent builtin code out of range");
1135       result = builtin_decl_explicit (fcode);
1136       if (!result
1137           && fcode > BEGIN_CHKP_BUILTINS
1138           && fcode < END_CHKP_BUILTINS)
1139         {
1140           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1141           result = builtin_decl_explicit (fcode);
1142           result = chkp_maybe_clone_builtin_fndecl (result);
1143         }
1144       gcc_assert (result);
1145     }
1146   else if (fclass == BUILT_IN_MD)
1147     {
1148       result = targetm.builtin_decl (fcode, true);
1149       if (!result || result == error_mark_node)
1150         fatal_error (input_location, "target specific builtin not available");
1151     }
1152   else
1153     gcc_unreachable ();
1154
1155   asmname = streamer_read_string (data_in, ib);
1156   if (asmname)
1157     set_builtin_user_assembler_name (result, asmname);
1158
1159   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1160
1161   return result;
1162 }