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 "symtab.h"
  28 #include "options.h"
  29 #include "tree.h"
  30 #include "fold-const.h"
  31 #include "stringpool.h"
  32 #include "predict.h"
  33 #include "tm.h"
  34 #include "hard-reg-set.h"
  35 #include "function.h"
  36 #include "basic-block.h"
  37 #include "tree-ssa-alias.h"
  38 #include "internal-fn.h"
  39 #include "gimple-expr.h"
  40 #include "gimple.h"
  41 #include "plugin-api.h"
  42 #include "ipa-ref.h"
  43 #include "cgraph.h"
  44 #include "tree-streamer.h"
  45 #include "data-streamer.h"
  46 #include "streamer-hooks.h"
  47 #include "lto-streamer.h"
  48 #include "builtins.h"
  49 #include "ipa-chkp.h"
  50 #include "gomp-constants.h"
  51
  52
  53 /* Read a STRING_CST from the string table in DATA_IN using input
  54    block IB.  */
  55
  56 tree
  57 streamer_read_string_cst (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 build_string (len, ptr);
  66 }
  67
  68
  69 /* Read an IDENTIFIER from the string table in DATA_IN using input
  70    block IB.  */
  71
  72 static tree
  73 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  74 {
  75   unsigned int len;
  76   const char *ptr;
  77
  78   ptr = streamer_read_indexed_string (data_in, ib, &len);
  79   if (!ptr)
  80     return NULL;
  81   return get_identifier_with_length (ptr, len);
  82 }
  83
  84
  85 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  86    tables and descriptors for the file being read.  */
  87
  88 tree
  89 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  90 {
  91   tree first, prev, curr;
  92
  93   /* The chain is written as NULL terminated list of trees.  */
  94   first = prev = NULL_TREE;
  95   do
  96     {
  97       curr = stream_read_tree (ib, data_in);
  98       if (prev)
  99         TREE_CHAIN (prev) = curr;
 100       else
 101         first = curr;
 102
 103       prev = curr;
 104     }
 105   while (curr);
 106
 107   return first;
 108 }
 109
 110
 111 /* Unpack all the non-pointer fields of the TS_BASE structure of
 112    expression EXPR from bitpack BP.  */
 113
 114 static inline void
 115 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 116 {
 117   /* Note that the code for EXPR has already been unpacked to create EXPR in
 118      streamer_alloc_tree.  */
 119   if (!TYPE_P (expr))
 120     {
 121       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 122       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 123       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 124
 125       /* TREE_PUBLIC is used on types to indicate that the type
 126          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 127          so we skip it here.  */
 128       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 129     }
 130   else
 131     bp_unpack_value (bp, 4);
 132   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 134   if (DECL_P (expr))
 135     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   else if (TYPE_P (expr))
 137     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 138   else
 139     bp_unpack_value (bp, 1);
 140   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 141   if (TYPE_P (expr))
 142     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 143   else
 144     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 145   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 146   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 147   if (TREE_CODE (expr) != TREE_BINFO)
 148     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 149   else
 150     bp_unpack_value (bp, 1);
 151   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 152   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 153   if (TYPE_P (expr))
 154     {
 155       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 156       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 157     }
 158   else if (TREE_CODE (expr) == SSA_NAME)
 159     {
 160       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 161       bp_unpack_value (bp, 8);
 162     }
 163   else
 164     bp_unpack_value (bp, 9);
 165 }
 166
 167
 168 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 169    expression EXPR from bitpack BP.  */
 170
 171 static void
 172 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 173 {
 174   int i;
 175   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 176     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 177 }
 178
 179
 180 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 181    expression EXPR from bitpack BP.  */
 182
 183 static void
 184 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 185 {
 186   unsigned i;
 187   REAL_VALUE_TYPE r;
 188   REAL_VALUE_TYPE *rp;
 189
 190   /* Clear all bits of the real value type so that we can later do
 191      bitwise comparisons to see if two values are the same.  */
 192   memset (&r, 0, sizeof r);
 193   r.cl = (unsigned) bp_unpack_value (bp, 2);
 194   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 195   r.sign = (unsigned) bp_unpack_value (bp, 1);
 196   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 197   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 198   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 199   for (i = 0; i < SIGSZ; i++)
 200     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 201
 202   rp = ggc_alloc<real_value> ();
 203   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 204   TREE_REAL_CST_PTR (expr) = rp;
 205 }
 206
 207
 208 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 209    expression EXPR from bitpack BP.  */
 210
 211 static void
 212 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 213 {
 214   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 215   fp->mode = bp_unpack_machine_mode (bp);
 216   fp->data.low = bp_unpack_var_len_int (bp);
 217   fp->data.high = bp_unpack_var_len_int (bp);
 218   TREE_FIXED_CST_PTR (expr) = fp;
 219 }
 220
 221 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 222    of expression EXPR from bitpack BP.  */
 223
 224 static void
 225 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 226 {
 227   DECL_MODE (expr) = bp_unpack_machine_mode (bp);
 228   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 229   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 230   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 231   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 232   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 233   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 234   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 235   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 236   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 237   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 238 #ifdef ACCEL_COMPILER
 239   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 240     DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
 241 #endif
 242   if (TREE_CODE (expr) == LABEL_DECL)
 243     {
 244       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 245
 246       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 247          force gimple_set_bb to recreate label_to_block_map.  */
 248       LABEL_DECL_UID (expr) = -1;
 249     }
 250
 251   if (TREE_CODE (expr) == FIELD_DECL)
 252     {
 253       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 254       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 255       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 256     }
 257
 258   if (TREE_CODE (expr) == VAR_DECL)
 259     {
 260       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 261       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 262     }
 263
 264   if (TREE_CODE (expr) == RESULT_DECL
 265       || TREE_CODE (expr) == PARM_DECL
 266       || TREE_CODE (expr) == VAR_DECL)
 267     {
 268       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 269       if (TREE_CODE (expr) == VAR_DECL
 270           || TREE_CODE (expr) == PARM_DECL)
 271         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 272     }
 273 }
 274
 275
 276 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 277    of expression EXPR from bitpack BP.  */
 278
 279 static void
 280 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 281 {
 282   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 283 }
 284
 285
 286 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 287    of expression EXPR from bitpack BP.  */
 288
 289 static void
 290 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 291 {
 292   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 293   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 294   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 295   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 296   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 297   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 298   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 299
 300   if (TREE_CODE (expr) == VAR_DECL)
 301     {
 302       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 303       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 304     }
 305
 306   if (TREE_CODE (expr) == FUNCTION_DECL)
 307     {
 308       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 309       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 310       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 311     }
 312 }
 313
 314
 315 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 316    of expression EXPR from bitpack BP.  */
 317
 318 static void
 319 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 320 {
 321   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 322                                                BUILT_IN_LAST);
 323   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 325   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 335                         = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 339   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 340   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 341     {
 342       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 343                                                                             12);
 344       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 345           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 346         fatal_error (input_location,
 347                      "machine independent builtin code out of range");
 348       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 349         {
 350           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 351           if (!result || result == error_mark_node)
 352             fatal_error (input_location,
 353                          "target specific builtin not available");
 354         }
 355     }
 356 }
 357
 358
 359 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 360    of expression EXPR from bitpack BP.  */
 361
 362 static void
 363 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 364 {
 365   machine_mode mode;
 366
 367   mode = bp_unpack_machine_mode (bp);
 368   SET_TYPE_MODE (expr, mode);
 369   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 370   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 371      no streaming.  */
 372   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 373   if (RECORD_OR_UNION_TYPE_P (expr))
 374     {
 375       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 376       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 377     }
 378   else if (TREE_CODE (expr) == ARRAY_TYPE)
 379     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 380   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 381   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 382   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 383   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 384   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 385   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 386 #ifdef ACCEL_COMPILER
 387   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 388     TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
 389 #endif
 390   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 391 }
 392
 393
 394 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 395    of expression EXPR from bitpack BP.  */
 396
 397 static void
 398 unpack_ts_block_value_fields (struct data_in *data_in,
 399                               struct bitpack_d *bp, tree expr)
 400 {
 401   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 402   /* BLOCK_NUMBER is recomputed.  */
 403   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 404 }
 405
 406 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 407    structure of expression EXPR from bitpack BP.  */
 408
 409 static void
 410 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 411                                               struct bitpack_d *bp, tree expr)
 412 {
 413   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 414   vec_safe_push (all_translation_units, expr);
 415 }
 416
 417
 418 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 419    structure of expression EXPR from bitpack BP.  */
 420
 421 static void
 422 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 423                                    struct bitpack_d *bp, tree expr)
 424 {
 425   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 426   switch (OMP_CLAUSE_CODE (expr))
 427     {
 428     case OMP_CLAUSE_DEFAULT:
 429       OMP_CLAUSE_DEFAULT_KIND (expr)
 430         = bp_unpack_enum (bp, omp_clause_default_kind,
 431                           OMP_CLAUSE_DEFAULT_LAST);
 432       break;
 433     case OMP_CLAUSE_SCHEDULE:
 434       OMP_CLAUSE_SCHEDULE_KIND (expr)
 435         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 436                           OMP_CLAUSE_SCHEDULE_LAST);
 437       break;
 438     case OMP_CLAUSE_DEPEND:
 439       OMP_CLAUSE_DEPEND_KIND (expr)
 440         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 441       break;
 442     case OMP_CLAUSE_MAP:
 443       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 444                                                      GOMP_MAP_LAST));
 445       break;
 446     case OMP_CLAUSE_PROC_BIND:
 447       OMP_CLAUSE_PROC_BIND_KIND (expr)
 448         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 449                           OMP_CLAUSE_PROC_BIND_LAST);
 450       break;
 451     case OMP_CLAUSE_REDUCTION:
 452       OMP_CLAUSE_REDUCTION_CODE (expr)
 453         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 454       break;
 455     default:
 456       break;
 457     }
 458 }
 459
 460
 461 /* Read all the language-independent bitfield values for EXPR from IB.
 462    Return the partially unpacked bitpack so the caller can unpack any other
 463    bitfield values that the writer may have written.  */
 464
 465 void
 466 streamer_read_tree_bitfields (struct lto_input_block *ib,
 467                               struct data_in *data_in, tree expr)
 468 {
 469   enum tree_code code;
 470   struct bitpack_d bp;
 471
 472   /* Read the bitpack of non-pointer values from IB.  */
 473   bp = streamer_read_bitpack (ib);
 474
 475   /* The first word in BP contains the code of the tree that we
 476      are about to read.  */
 477   code = (enum tree_code) bp_unpack_value (&bp, 16);
 478   lto_tag_check (lto_tree_code_to_tag (code),
 479                  lto_tree_code_to_tag (TREE_CODE (expr)));
 480
 481   /* Note that all these functions are highly sensitive to changes in
 482      the types and sizes of each of the fields being packed.  */
 483   unpack_ts_base_value_fields (&bp, expr);
 484
 485   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 486     unpack_ts_int_cst_value_fields (&bp, expr);
 487
 488   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 489     unpack_ts_real_cst_value_fields (&bp, expr);
 490
 491   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 492     unpack_ts_fixed_cst_value_fields (&bp, expr);
 493
 494   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 495     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 496
 497   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 498     unpack_ts_decl_common_value_fields (&bp, expr);
 499
 500   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 501     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 502
 503   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 504     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 505
 506   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 507     unpack_ts_function_decl_value_fields (&bp, expr);
 508
 509   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 510     unpack_ts_type_common_value_fields (&bp, expr);
 511
 512   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 513     {
 514       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 515       if (code == MEM_REF
 516           || code == TARGET_MEM_REF)
 517         {
 518           MR_DEPENDENCE_CLIQUE (expr)
 519             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 520           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 521             MR_DEPENDENCE_BASE (expr)
 522               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 523         }
 524     }
 525
 526   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 527     unpack_ts_block_value_fields (data_in, &bp, expr);
 528
 529   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 530     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 531
 532   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 533     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 534
 535   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 536     {
 537       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 538       if (length > 0)
 539         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 540     }
 541
 542   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 543     {
 544       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 545       if (length > 0)
 546         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 547     }
 548
 549 #ifndef ACCEL_COMPILER
 550   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 551     {
 552       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 553       if (targetm.target_option.post_stream_in)
 554         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 555     }
 556 #endif
 557
 558   if (code == OMP_CLAUSE)
 559     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 560 }
 561
 562
 563 /* Materialize a new tree from input block IB using descriptors in
 564    DATA_IN.  The code for the new tree should match TAG.  Store in
 565    *IX_P the index into the reader cache where the new tree is stored.  */
 566
 567 tree
 568 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 569                      enum LTO_tags tag)
 570 {
 571   enum tree_code code;
 572   tree result;
 573 #ifdef LTO_STREAMER_DEBUG
 574   HOST_WIDE_INT orig_address_in_writer;
 575 #endif
 576
 577   result = NULL_TREE;
 578
 579 #ifdef LTO_STREAMER_DEBUG
 580   /* Read the word representing the memory address for the tree
 581      as it was written by the writer.  This is useful when
 582      debugging differences between the writer and reader.  */
 583   orig_address_in_writer = streamer_read_hwi (ib);
 584   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 585 #endif
 586
 587   code = lto_tag_to_tree_code (tag);
 588
 589   /* We should never see an SSA_NAME tree.  Only the version numbers of
 590      SSA names are ever written out.  See input_ssa_names.  */
 591   gcc_assert (code != SSA_NAME);
 592
 593   /* Instantiate a new tree using the header data.  */
 594   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 595     result = streamer_read_string_cst (data_in, ib);
 596   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 597     result = input_identifier (data_in, ib);
 598   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 599     {
 600       HOST_WIDE_INT len = streamer_read_hwi (ib);
 601       result = make_tree_vec (len);
 602     }
 603   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 604     {
 605       HOST_WIDE_INT len = streamer_read_hwi (ib);
 606       result = make_vector (len);
 607     }
 608   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 609     {
 610       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 611       result = make_tree_binfo (len);
 612     }
 613   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 614     {
 615       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 616       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 617       result = make_int_cst (len, ext_len);
 618     }
 619   else if (code == CALL_EXPR)
 620     {
 621       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 622       return build_vl_exp (CALL_EXPR, nargs + 3);
 623     }
 624   else if (code == OMP_CLAUSE)
 625     {
 626       enum omp_clause_code subcode
 627         = (enum omp_clause_code) streamer_read_uhwi (ib);
 628       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 629     }
 630   else
 631     {
 632       /* For all other nodes, materialize the tree with a raw
 633          make_node call.  */
 634       result = make_node (code);
 635     }
 636
 637 #ifdef LTO_STREAMER_DEBUG
 638   /* Store the original address of the tree as seen by the writer
 639      in RESULT's aux field.  This is useful when debugging streaming
 640      problems.  This way, a debugging session can be started on
 641      both writer and reader with a breakpoint using this address
 642      value in both.  */
 643   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 644 #endif
 645
 646   return result;
 647 }
 648
 649
 650 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 651    block IB.  DATA_IN contains tables and descriptors for the
 652    file being read.  */
 653
 654
 655 static void
 656 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 657                                    struct data_in *data_in, tree expr)
 658 {
 659   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 660     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 661 }
 662
 663
 664 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 665    block IB.  DATA_IN contains tables and descriptors for the
 666    file being read.  */
 667
 668 static void
 669 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 670                                    struct data_in *data_in, tree expr)
 671 {
 672   unsigned i;
 673   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 674     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 675 }
 676
 677
 678 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 679    block IB.  DATA_IN contains tables and descriptors for the
 680    file being read.  */
 681
 682 static void
 683 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 684                                     struct data_in *data_in, tree expr)
 685 {
 686   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 687   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 688 }
 689
 690
 691 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 692    from input block IB.  DATA_IN contains tables and descriptors for the
 693    file being read.  */
 694
 695 static void
 696 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 697                                          struct data_in *data_in, tree expr)
 698 {
 699   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 700   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 701 }
 702
 703
 704 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 705    input block IB.  DATA_IN contains tables and descriptors for the
 706    file being read.  */
 707
 708 static void
 709 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 710                                         struct data_in *data_in, tree expr)
 711 {
 712   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 713   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 714   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 715
 716   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 717      for early inlining so drop it on the floor instead of ICEing in
 718      dwarf2out.c.  */
 719
 720   if ((TREE_CODE (expr) == VAR_DECL
 721        || TREE_CODE (expr) == PARM_DECL)
 722       && DECL_HAS_VALUE_EXPR_P (expr))
 723     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 724
 725   if (TREE_CODE (expr) == VAR_DECL)
 726     {
 727       tree dexpr = stream_read_tree (ib, data_in);
 728       if (dexpr)
 729         SET_DECL_DEBUG_EXPR (expr, dexpr);
 730     }
 731 }
 732
 733
 734 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 735    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 736    file being read.  */
 737
 738 static void
 739 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 740                                             struct data_in *data_in, tree expr)
 741 {
 742   if (TREE_CODE (expr) == TYPE_DECL)
 743     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 744 }
 745
 746
 747 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 748    from input block IB.  DATA_IN contains tables and descriptors for the
 749    file being read.  */
 750
 751 static void
 752 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 753                                           struct data_in *data_in, tree expr)
 754 {
 755   tree id;
 756
 757   id = stream_read_tree (ib, data_in);
 758   if (id)
 759     {
 760       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 761       SET_DECL_ASSEMBLER_NAME (expr, id);
 762     }
 763 }
 764
 765
 766 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 767    input block IB.  DATA_IN contains tables and descriptors for the
 768    file being read.  */
 769
 770 static void
 771 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 772                                        struct data_in *data_in, tree expr)
 773 {
 774   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 775   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 776   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 777   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 778   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 779 }
 780
 781
 782 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 783    from input block IB.  DATA_IN contains tables and descriptors for the
 784    file being read.  */
 785
 786 static void
 787 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 788                                           struct data_in *data_in, tree expr)
 789 {
 790   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 791   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 792   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 793 #ifndef ACCEL_COMPILER
 794   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 795 #endif
 796   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 797
 798   /* If the file contains a function with an EH personality set,
 799      then it was compiled with -fexceptions.  In that case, initialize
 800      the backend EH machinery.  */
 801   if (DECL_FUNCTION_PERSONALITY (expr))
 802     lto_init_eh ();
 803 }
 804
 805
 806 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 807    input block IB.  DATA_IN contains tables and descriptors for the file
 808    being read.  */
 809
 810 static void
 811 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 812                                         struct data_in *data_in, tree expr)
 813 {
 814   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 815   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 816   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 817   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 818   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 819      reconstructed during fixup.  */
 820   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 821      during fixup.  */
 822   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 823   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 824   /* TYPE_CANONICAL gets re-computed during type merging.  */
 825   TYPE_CANONICAL (expr) = NULL_TREE;
 826   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 827 }
 828
 829 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 830    from input block IB.  DATA_IN contains tables and descriptors for the
 831    file being read.  */
 832
 833 static void
 834 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 835                                             struct data_in *data_in,
 836                                             tree expr)
 837 {
 838   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 839     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 840   else if (TREE_CODE (expr) == ARRAY_TYPE)
 841     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 842   else if (RECORD_OR_UNION_TYPE_P (expr))
 843     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 844   else if (TREE_CODE (expr) == FUNCTION_TYPE
 845            || TREE_CODE (expr) == METHOD_TYPE)
 846     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 847
 848   if (!POINTER_TYPE_P (expr))
 849     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 850   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 851   if (RECORD_OR_UNION_TYPE_P (expr))
 852     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 853 }
 854
 855
 856 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 857    block IB.  DATA_IN contains tables and descriptors for the
 858    file being read.  */
 859
 860 static void
 861 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 862                                  struct data_in *data_in, tree expr)
 863 {
 864   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 865   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 866   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 867 }
 868
 869
 870 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 871    block IB.  DATA_IN contains tables and descriptors for the
 872    file being read.  */
 873
 874 static void
 875 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 876                                 struct data_in *data_in, tree expr)
 877 {
 878   int i;
 879
 880   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 881      instantiate EXPR.  */
 882   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 883     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 884 }
 885
 886
 887 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 888    block IB.  DATA_IN contains tables and descriptors for the
 889    file being read.  */
 890
 891
 892 static void
 893 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 894                                 struct data_in *data_in, tree expr)
 895 {
 896   int i;
 897   tree block;
 898
 899   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 900     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 901
 902   block = stream_read_tree (ib, data_in);
 903
 904   /* TODO: Block is stored in the locus information.  It may make more sense to
 905      to make it go via the location cache.  */
 906   if (block)
 907     {
 908       data_in->location_cache.apply_location_cache ();
 909       TREE_SET_BLOCK (expr, block);
 910     }
 911 }
 912
 913
 914 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 915    block IB.  DATA_IN contains tables and descriptors for the
 916    file being read.  */
 917
 918 static void
 919 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 920                                   struct data_in *data_in, tree expr)
 921 {
 922   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 923
 924   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 925
 926   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 927      the limited cases we can handle - those that represent inlined
 928      function scopes.  For the rest them on the floor instead of ICEing in
 929      dwarf2out.c.  */
 930   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 931   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 932      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 933      dwarf2out.c.  */
 934
 935   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 936      streaming time.  */
 937
 938   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 939      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 940      stream the child relationship explicitly.  */
 941   if (BLOCK_SUPERCONTEXT (expr)
 942       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 943     {
 944       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 945       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 946     }
 947
 948   /* The global block is rooted at the TU decl.  Hook it here to
 949      avoid the need to stream in this block during WPA time.  */
 950   else if (BLOCK_SUPERCONTEXT (expr)
 951            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 952     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 953
 954   /* The function-level block is connected at the time we read in
 955      function bodies for the same reason.  */
 956 }
 957
 958
 959 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 960    block IB.  DATA_IN contains tables and descriptors for the
 961    file being read.  */
 962
 963 static void
 964 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 965                                   struct data_in *data_in, tree expr)
 966 {
 967   unsigned i;
 968   tree t;
 969
 970   /* Note that the number of slots in EXPR was read in
 971      streamer_alloc_tree when instantiating EXPR.  However, the
 972      vector is empty so we cannot rely on vec::length to know how many
 973      elements to read.  So, this list is emitted as a 0-terminated
 974      list on the writer side.  */
 975   do
 976     {
 977       t = stream_read_tree (ib, data_in);
 978       if (t)
 979         BINFO_BASE_BINFOS (expr)->quick_push (t);
 980     }
 981   while (t);
 982
 983   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 984   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 985   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 986
 987   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 988      unpacking the bitfield section.  */
 989   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 990     {
 991       tree a = stream_read_tree (ib, data_in);
 992       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 993     }
 994   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 995      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 996 }
 997
 998
 999 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1000    input block IB.  DATA_IN contains tables and descriptors for the
1001    file being read.  */
1002
1003 static void
1004 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
1005                                         struct data_in *data_in, tree expr)
1006 {
1007   unsigned i;
1008
1009   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1010     {
1011       constructor_elt e;
1012       e.index = stream_read_tree (ib, data_in);
1013       e.value = stream_read_tree (ib, data_in);
1014       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1015     }
1016 }
1017
1018
1019 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1020    input block IB.  DATA_IN contains tables and descriptors for the
1021    file being read.  */
1022
1023 static void
1024 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1025                                        struct data_in *data_in, tree expr)
1026 {
1027   int i;
1028
1029   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1030     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1031   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1032 }
1033
1034
1035 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1036    contains tables and descriptors for the file being read.  */
1037
1038 void
1039 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1040                          tree expr)
1041 {
1042   enum tree_code code;
1043
1044   code = TREE_CODE (expr);
1045
1046   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1047     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1048
1049   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1050     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1051
1052   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1053     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1054
1055   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1056     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1057
1058   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1059     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1062     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1065     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1068     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1069
1070   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1071     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1072
1073   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1074     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1075
1076   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1077     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1078
1079   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1080     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1081
1082   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1083     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1084
1085   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1086     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1087
1088   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1089     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1090
1091   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1092     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1093
1094   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1095     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1096
1097   if (code == OMP_CLAUSE)
1098     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1099 }
1100
1101
1102 /* Read an index IX from input block IB and return the tree node at
1103    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1104
1105 tree
1106 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1107 {
1108   unsigned HOST_WIDE_INT ix;
1109   tree result;
1110   enum LTO_tags expected_tag;
1111
1112   ix = streamer_read_uhwi (ib);
1113   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1114
1115   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1116   gcc_assert (result
1117               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1118
1119   return result;
1120 }
1121
1122
1123 /* Read a code and class from input block IB and return the
1124    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1125
1126 tree
1127 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1128 {
1129   enum built_in_class fclass;
1130   enum built_in_function fcode;
1131   const char *asmname;
1132   tree result;
1133
1134   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1135   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1136
1137   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1138
1139   if (fclass == BUILT_IN_NORMAL)
1140     {
1141       if (fcode >= END_BUILTINS)
1142         fatal_error (input_location,
1143                      "machine independent builtin code out of range");
1144       result = builtin_decl_explicit (fcode);
1145       if (!result
1146           && fcode > BEGIN_CHKP_BUILTINS
1147           && fcode < END_CHKP_BUILTINS)
1148         {
1149           fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
1150           result = builtin_decl_explicit (fcode);
1151           result = chkp_maybe_clone_builtin_fndecl (result);
1152         }
1153       gcc_assert (result);
1154     }
1155   else if (fclass == BUILT_IN_MD)
1156     {
1157       result = targetm.builtin_decl (fcode, true);
1158       if (!result || result == error_mark_node)
1159         fatal_error (input_location, "target specific builtin not available");
1160     }
1161   else
1162     gcc_unreachable ();
1163
1164   asmname = streamer_read_string (data_in, ib);
1165   if (asmname)
1166     set_builtin_user_assembler_name (result, asmname);
1167
1168   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1169
1170   return result;
1171 }