gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2017 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 #include "asan.h"
  36
  37
  38 /* Read a STRING_CST from the string table in DATA_IN using input
  39    block IB.  */
  40
  41 tree
  42 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  43 {
  44   unsigned int len;
  45   const char * ptr;
  46
  47   ptr = streamer_read_indexed_string (data_in, ib, &len);
  48   if (!ptr)
  49     return NULL;
  50   return build_string (len, ptr);
  51 }
  52
  53
  54 /* Read an IDENTIFIER from the string table in DATA_IN using input
  55    block IB.  */
  56
  57 static tree
  58 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  59 {
  60   unsigned int len;
  61   const char *ptr;
  62
  63   ptr = streamer_read_indexed_string (data_in, ib, &len);
  64   if (!ptr)
  65     return NULL;
  66   return get_identifier_with_length (ptr, len);
  67 }
  68
  69
  70 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  71    tables and descriptors for the file being read.  */
  72
  73 tree
  74 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  75 {
  76   tree first, prev, curr;
  77
  78   /* The chain is written as NULL terminated list of trees.  */
  79   first = prev = NULL_TREE;
  80   do
  81     {
  82       curr = stream_read_tree (ib, data_in);
  83       if (prev)
  84         TREE_CHAIN (prev) = curr;
  85       else
  86         first = curr;
  87
  88       prev = curr;
  89     }
  90   while (curr);
  91
  92   return first;
  93 }
  94
  95
  96 /* Unpack all the non-pointer fields of the TS_BASE structure of
  97    expression EXPR from bitpack BP.  */
  98
  99 static inline void
 100 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 101 {
 102   /* Note that the code for EXPR has already been unpacked to create EXPR in
 103      streamer_alloc_tree.  */
 104   if (!TYPE_P (expr))
 105     {
 106       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 107       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 108       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 109
 110       /* TREE_PUBLIC is used on types to indicate that the type
 111          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 112          so we skip it here.  */
 113       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 114     }
 115   else
 116     bp_unpack_value (bp, 4);
 117   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 118   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 119   if (DECL_P (expr))
 120     {
 121       DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 122       DECL_NAMELESS (expr) = (unsigned) bp_unpack_value (bp, 1);
 123     }
 124   else if (TYPE_P (expr))
 125     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 126   else
 127     bp_unpack_value (bp, 1);
 128   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 129   if (TYPE_P (expr))
 130     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 131   else
 132     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 134   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 135   if (TREE_CODE (expr) != TREE_BINFO)
 136     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   else
 138     bp_unpack_value (bp, 1);
 139   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 140   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 141   if (TYPE_P (expr))
 142     {
 143       if (AGGREGATE_TYPE_P (expr))
 144         TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 145       else
 146         TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 147       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 148     }
 149   else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
 150     {
 151       REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 152       bp_unpack_value (bp, 8);
 153     }
 154   else if (TREE_CODE (expr) == SSA_NAME)
 155     {
 156       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 157       bp_unpack_value (bp, 8);
 158     }
 159   else
 160     bp_unpack_value (bp, 9);
 161 }
 162
 163
 164 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 165    expression EXPR from bitpack BP.  */
 166
 167 static void
 168 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 169 {
 170   int i;
 171   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 172     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 173 }
 174
 175
 176 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 177    expression EXPR from bitpack BP.  */
 178
 179 static void
 180 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 181 {
 182   unsigned i;
 183   REAL_VALUE_TYPE r;
 184   REAL_VALUE_TYPE *rp;
 185
 186   /* Clear all bits of the real value type so that we can later do
 187      bitwise comparisons to see if two values are the same.  */
 188   memset (&r, 0, sizeof r);
 189   r.cl = (unsigned) bp_unpack_value (bp, 2);
 190   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 191   r.sign = (unsigned) bp_unpack_value (bp, 1);
 192   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 193   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 194   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 195   for (i = 0; i < SIGSZ; i++)
 196     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 197
 198   rp = ggc_alloc<real_value> ();
 199   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 200   TREE_REAL_CST_PTR (expr) = rp;
 201 }
 202
 203
 204 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 205    expression EXPR from bitpack BP.  */
 206
 207 static void
 208 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 209 {
 210   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 211   fp->mode = bp_unpack_machine_mode (bp);
 212   fp->data.low = bp_unpack_var_len_int (bp);
 213   fp->data.high = bp_unpack_var_len_int (bp);
 214   TREE_FIXED_CST_PTR (expr) = fp;
 215 }
 216
 217 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 218    of expression EXPR from bitpack BP.  */
 219
 220 static void
 221 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 222 {
 223   SET_DECL_MODE (expr, bp_unpack_machine_mode (bp));
 224   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 225   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 226   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 227   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 228   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 229   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 230   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 231   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 232   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 233   SET_DECL_ALIGN (expr, (unsigned) bp_unpack_var_len_unsigned (bp));
 234 #ifdef ACCEL_COMPILER
 235   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 236     SET_DECL_ALIGN (expr, targetm.absolute_biggest_alignment);
 237 #endif
 238   if (TREE_CODE (expr) == LABEL_DECL)
 239     {
 240       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 241
 242       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 243          force gimple_set_bb to recreate label_to_block_map.  */
 244       LABEL_DECL_UID (expr) = -1;
 245     }
 246
 247   if (TREE_CODE (expr) == FIELD_DECL)
 248     {
 249       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 250       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 251       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 252     }
 253
 254   if (VAR_P (expr))
 255     {
 256       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 257       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 258     }
 259
 260   if (TREE_CODE (expr) == RESULT_DECL
 261       || TREE_CODE (expr) == PARM_DECL
 262       || VAR_P (expr))
 263     {
 264       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 265       if (VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 266         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 267     }
 268 }
 269
 270
 271 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 272    of expression EXPR from bitpack BP.  */
 273
 274 static void
 275 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 276 {
 277   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 278 }
 279
 280
 281 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 282    of expression EXPR from bitpack BP.  */
 283
 284 static void
 285 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 286 {
 287   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 288   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 289   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 290   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 291   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 292   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 293   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 294
 295   if (VAR_P (expr))
 296     {
 297       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 298       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 299     }
 300
 301   if (TREE_CODE (expr) == FUNCTION_DECL)
 302     {
 303       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 304       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 305       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 306     }
 307 }
 308
 309
 310 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 311    of expression EXPR from bitpack BP.  */
 312
 313 static void
 314 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 315 {
 316   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 317                                                BUILT_IN_LAST);
 318   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 319   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 325   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 330                         = (unsigned) bp_unpack_value (bp, 1);
 331   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 336     {
 337       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 338                                                                             12);
 339       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 340           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 341         fatal_error (input_location,
 342                      "machine independent builtin code out of range");
 343       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 344         {
 345           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 346           if (!result || result == error_mark_node)
 347             fatal_error (input_location,
 348                          "target specific builtin not available");
 349         }
 350     }
 351 }
 352
 353
 354 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 355    of expression EXPR from bitpack BP.  */
 356
 357 static void
 358 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 359 {
 360   machine_mode mode;
 361
 362   mode = bp_unpack_machine_mode (bp);
 363   SET_TYPE_MODE (expr, mode);
 364   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 365   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 366      no streaming.  */
 367   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 368   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 369   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 370   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 371   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 372   if (RECORD_OR_UNION_TYPE_P (expr))
 373     {
 374       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 375       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 376     }
 377   else if (TREE_CODE (expr) == ARRAY_TYPE)
 378     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 379   if (AGGREGATE_TYPE_P (expr))
 380     TYPE_TYPELESS_STORAGE (expr) = (unsigned) bp_unpack_value (bp, 1);
 381   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 382   SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
 383 #ifdef ACCEL_COMPILER
 384   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 385     SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
 386 #endif
 387 }
 388
 389
 390 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 391    of expression EXPR from bitpack BP.  */
 392
 393 static void
 394 unpack_ts_block_value_fields (struct data_in *data_in,
 395                               struct bitpack_d *bp, tree expr)
 396 {
 397   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 398   /* BLOCK_NUMBER is recomputed.  */
 399   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 400 }
 401
 402 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 403    structure of expression EXPR from bitpack BP.  */
 404
 405 static void
 406 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 407                                               struct bitpack_d *bp, tree expr)
 408 {
 409   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 410   vec_safe_push (all_translation_units, expr);
 411 }
 412
 413
 414 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 415    structure of expression EXPR from bitpack BP.  */
 416
 417 static void
 418 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 419                                    struct bitpack_d *bp, tree expr)
 420 {
 421   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 422   switch (OMP_CLAUSE_CODE (expr))
 423     {
 424     case OMP_CLAUSE_DEFAULT:
 425       OMP_CLAUSE_DEFAULT_KIND (expr)
 426         = bp_unpack_enum (bp, omp_clause_default_kind,
 427                           OMP_CLAUSE_DEFAULT_LAST);
 428       break;
 429     case OMP_CLAUSE_SCHEDULE:
 430       OMP_CLAUSE_SCHEDULE_KIND (expr)
 431         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 432                           OMP_CLAUSE_SCHEDULE_LAST);
 433       break;
 434     case OMP_CLAUSE_DEPEND:
 435       OMP_CLAUSE_DEPEND_KIND (expr)
 436         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 437       break;
 438     case OMP_CLAUSE_MAP:
 439       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 440                                                      GOMP_MAP_LAST));
 441       break;
 442     case OMP_CLAUSE_PROC_BIND:
 443       OMP_CLAUSE_PROC_BIND_KIND (expr)
 444         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 445                           OMP_CLAUSE_PROC_BIND_LAST);
 446       break;
 447     case OMP_CLAUSE_REDUCTION:
 448       OMP_CLAUSE_REDUCTION_CODE (expr)
 449         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 450       break;
 451     default:
 452       break;
 453     }
 454 }
 455
 456
 457 /* Read all the language-independent bitfield values for EXPR from IB.
 458    Return the partially unpacked bitpack so the caller can unpack any other
 459    bitfield values that the writer may have written.  */
 460
 461 void
 462 streamer_read_tree_bitfields (struct lto_input_block *ib,
 463                               struct data_in *data_in, tree expr)
 464 {
 465   enum tree_code code;
 466   struct bitpack_d bp;
 467
 468   /* Read the bitpack of non-pointer values from IB.  */
 469   bp = streamer_read_bitpack (ib);
 470
 471   /* The first word in BP contains the code of the tree that we
 472      are about to read.  */
 473   code = (enum tree_code) bp_unpack_value (&bp, 16);
 474   lto_tag_check (lto_tree_code_to_tag (code),
 475                  lto_tree_code_to_tag (TREE_CODE (expr)));
 476
 477   /* Note that all these functions are highly sensitive to changes in
 478      the types and sizes of each of the fields being packed.  */
 479   unpack_ts_base_value_fields (&bp, expr);
 480
 481   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 482     unpack_ts_int_cst_value_fields (&bp, expr);
 483
 484   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 485     unpack_ts_real_cst_value_fields (&bp, expr);
 486
 487   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 488     unpack_ts_fixed_cst_value_fields (&bp, expr);
 489
 490   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 491     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 492
 493   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 494     unpack_ts_decl_common_value_fields (&bp, expr);
 495
 496   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 497     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 498
 499   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 500     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 501
 502   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 503     unpack_ts_function_decl_value_fields (&bp, expr);
 504
 505   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 506     unpack_ts_type_common_value_fields (&bp, expr);
 507
 508   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 509     {
 510       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 511       if (code == MEM_REF
 512           || code == TARGET_MEM_REF)
 513         {
 514           MR_DEPENDENCE_CLIQUE (expr)
 515             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 516           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 517             MR_DEPENDENCE_BASE (expr)
 518               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 519         }
 520     }
 521
 522   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 523     unpack_ts_block_value_fields (data_in, &bp, expr);
 524
 525   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 526     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 527
 528   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 529     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 530
 531   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 532     {
 533       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 534       if (length > 0)
 535         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 536     }
 537
 538   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 539     {
 540       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 541       if (length > 0)
 542         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 543     }
 544
 545 #ifndef ACCEL_COMPILER
 546   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 547     {
 548       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 549       if (targetm.target_option.post_stream_in)
 550         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 551     }
 552 #endif
 553
 554   if (code == OMP_CLAUSE)
 555     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 556 }
 557
 558
 559 /* Materialize a new tree from input block IB using descriptors in
 560    DATA_IN.  The code for the new tree should match TAG.  Store in
 561    *IX_P the index into the reader cache where the new tree is stored.  */
 562
 563 tree
 564 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 565                      enum LTO_tags tag)
 566 {
 567   enum tree_code code;
 568   tree result;
 569
 570   result = NULL_TREE;
 571
 572   code = lto_tag_to_tree_code (tag);
 573
 574   /* We should never see an SSA_NAME tree.  Only the version numbers of
 575      SSA names are ever written out.  See input_ssa_names.  */
 576   gcc_assert (code != SSA_NAME);
 577
 578   /* Instantiate a new tree using the header data.  */
 579   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 580     result = streamer_read_string_cst (data_in, ib);
 581   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 582     result = input_identifier (data_in, ib);
 583   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 584     {
 585       HOST_WIDE_INT len = streamer_read_hwi (ib);
 586       result = make_tree_vec (len);
 587     }
 588   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 589     {
 590       HOST_WIDE_INT len = streamer_read_hwi (ib);
 591       result = make_vector (len);
 592     }
 593   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 594     {
 595       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 596       result = make_tree_binfo (len);
 597     }
 598   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 599     {
 600       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 601       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 602       result = make_int_cst (len, ext_len);
 603     }
 604   else if (code == CALL_EXPR)
 605     {
 606       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 607       return build_vl_exp (CALL_EXPR, nargs + 3);
 608     }
 609   else if (code == OMP_CLAUSE)
 610     {
 611       enum omp_clause_code subcode
 612         = (enum omp_clause_code) streamer_read_uhwi (ib);
 613       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 614     }
 615   else
 616     {
 617       /* For all other nodes, materialize the tree with a raw
 618          make_node call.  */
 619       result = make_node (code);
 620     }
 621
 622   return result;
 623 }
 624
 625
 626 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 627    block IB.  DATA_IN contains tables and descriptors for the
 628    file being read.  */
 629
 630
 631 static void
 632 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 633                                    struct data_in *data_in, tree expr)
 634 {
 635   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 636     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 637 }
 638
 639
 640 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 641    block IB.  DATA_IN contains tables and descriptors for the
 642    file being read.  */
 643
 644 static void
 645 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 646                                    struct data_in *data_in, tree expr)
 647 {
 648   unsigned i;
 649   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 650     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 651 }
 652
 653
 654 /* Read all pointer fields in the TS_COMPLEX 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_complex_tree_pointers (struct lto_input_block *ib,
 660                                     struct data_in *data_in, tree expr)
 661 {
 662   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 663   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 664 }
 665
 666
 667 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 668    from input block IB.  DATA_IN contains tables and descriptors for the
 669    file being read.  */
 670
 671 static void
 672 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 673                                          struct data_in *data_in, tree expr)
 674 {
 675   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 676   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 677 }
 678
 679
 680 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 681    input block IB.  DATA_IN contains tables and descriptors for the
 682    file being read.  */
 683
 684 static void
 685 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 686                                         struct data_in *data_in, tree expr)
 687 {
 688   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 689   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 690   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 691
 692   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 693      for early inlining so drop it on the floor instead of ICEing in
 694      dwarf2out.c.  */
 695
 696   if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 697       && DECL_HAS_VALUE_EXPR_P (expr))
 698     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 699
 700   if (VAR_P (expr))
 701     {
 702       tree dexpr = stream_read_tree (ib, data_in);
 703       if (dexpr)
 704         SET_DECL_DEBUG_EXPR (expr, dexpr);
 705     }
 706 }
 707
 708
 709 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 710    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 711    file being read.  */
 712
 713 static void
 714 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 715                                             struct data_in *data_in, tree expr)
 716 {
 717   if (TREE_CODE (expr) == TYPE_DECL)
 718     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 719 }
 720
 721
 722 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 723    from input block IB.  DATA_IN contains tables and descriptors for the
 724    file being read.  */
 725
 726 static void
 727 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 728                                           struct data_in *data_in, tree expr)
 729 {
 730   tree id;
 731
 732   id = stream_read_tree (ib, data_in);
 733   if (id)
 734     {
 735       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 736       SET_DECL_ASSEMBLER_NAME (expr, id);
 737     }
 738 }
 739
 740
 741 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 742    input block IB.  DATA_IN contains tables and descriptors for the
 743    file being read.  */
 744
 745 static void
 746 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 747                                        struct data_in *data_in, tree expr)
 748 {
 749   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 750   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 751   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 752   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 753   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 754 }
 755
 756
 757 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 758    from input block IB.  DATA_IN contains tables and descriptors for the
 759    file being read.  */
 760
 761 static void
 762 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 763                                           struct data_in *data_in, tree expr)
 764 {
 765   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 766   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 767   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 768 #ifndef ACCEL_COMPILER
 769   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 770 #endif
 771   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 772
 773   /* If the file contains a function with an EH personality set,
 774      then it was compiled with -fexceptions.  In that case, initialize
 775      the backend EH machinery.  */
 776   if (DECL_FUNCTION_PERSONALITY (expr))
 777     lto_init_eh ();
 778 }
 779
 780
 781 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 782    input block IB.  DATA_IN contains tables and descriptors for the file
 783    being read.  */
 784
 785 static void
 786 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 787                                         struct data_in *data_in, tree expr)
 788 {
 789   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 790   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 791   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 792   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 793   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 794      reconstructed during fixup.  */
 795   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 796      during fixup.  */
 797   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 798   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 799   /* TYPE_CANONICAL gets re-computed during type merging.  */
 800   TYPE_CANONICAL (expr) = NULL_TREE;
 801   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 802 }
 803
 804 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 805    from input block IB.  DATA_IN contains tables and descriptors for the
 806    file being read.  */
 807
 808 static void
 809 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 810                                             struct data_in *data_in,
 811                                             tree expr)
 812 {
 813   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 814     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 815   else if (TREE_CODE (expr) == ARRAY_TYPE)
 816     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 817   else if (RECORD_OR_UNION_TYPE_P (expr))
 818     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 819   else if (TREE_CODE (expr) == FUNCTION_TYPE
 820            || TREE_CODE (expr) == METHOD_TYPE)
 821     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 822
 823   if (!POINTER_TYPE_P (expr))
 824     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 825   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 826   if (RECORD_OR_UNION_TYPE_P (expr))
 827     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 828 }
 829
 830
 831 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 832    block IB.  DATA_IN contains tables and descriptors for the
 833    file being read.  */
 834
 835 static void
 836 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 837                                  struct data_in *data_in, tree expr)
 838 {
 839   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 840   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 841   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 842 }
 843
 844
 845 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 846    block IB.  DATA_IN contains tables and descriptors for the
 847    file being read.  */
 848
 849 static void
 850 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 851                                 struct data_in *data_in, tree expr)
 852 {
 853   int i;
 854
 855   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 856      instantiate EXPR.  */
 857   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 858     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 859 }
 860
 861
 862 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 863    block IB.  DATA_IN contains tables and descriptors for the
 864    file being read.  */
 865
 866
 867 static void
 868 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 869                                 struct data_in *data_in, tree expr)
 870 {
 871   int i;
 872   tree block;
 873
 874   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 875     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 876
 877   block = stream_read_tree (ib, data_in);
 878
 879   /* TODO: Block is stored in the locus information.  It may make more sense to
 880      to make it go via the location cache.  */
 881   if (block)
 882     {
 883       data_in->location_cache.apply_location_cache ();
 884       TREE_SET_BLOCK (expr, block);
 885     }
 886 }
 887
 888
 889 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 890    block IB.  DATA_IN contains tables and descriptors for the
 891    file being read.  */
 892
 893 static void
 894 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 895                                   struct data_in *data_in, tree expr)
 896 {
 897   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 898
 899   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 900
 901   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 902      the limited cases we can handle - those that represent inlined
 903      function scopes.  For the rest them on the floor instead of ICEing in
 904      dwarf2out.c.  */
 905   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 906   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 907      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 908      dwarf2out.c.  */
 909
 910   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 911      streaming time.  */
 912
 913   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 914      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 915      stream the child relationship explicitly.  */
 916   if (BLOCK_SUPERCONTEXT (expr)
 917       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 918     {
 919       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 920       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 921     }
 922
 923   /* The global block is rooted at the TU decl.  Hook it here to
 924      avoid the need to stream in this block during WPA time.  */
 925   else if (BLOCK_SUPERCONTEXT (expr)
 926            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 927     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 928
 929   /* The function-level block is connected at the time we read in
 930      function bodies for the same reason.  */
 931 }
 932
 933
 934 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 935    block IB.  DATA_IN contains tables and descriptors for the
 936    file being read.  */
 937
 938 static void
 939 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 940                                   struct data_in *data_in, tree expr)
 941 {
 942   unsigned i;
 943   tree t;
 944
 945   /* Note that the number of slots in EXPR was read in
 946      streamer_alloc_tree when instantiating EXPR.  However, the
 947      vector is empty so we cannot rely on vec::length to know how many
 948      elements to read.  So, this list is emitted as a 0-terminated
 949      list on the writer side.  */
 950   do
 951     {
 952       t = stream_read_tree (ib, data_in);
 953       if (t)
 954         BINFO_BASE_BINFOS (expr)->quick_push (t);
 955     }
 956   while (t);
 957
 958   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 959   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 960   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 961
 962   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 963      unpacking the bitfield section.  */
 964   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 965     {
 966       tree a = stream_read_tree (ib, data_in);
 967       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 968     }
 969   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 970      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 971 }
 972
 973
 974 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 975    input block IB.  DATA_IN contains tables and descriptors for the
 976    file being read.  */
 977
 978 static void
 979 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 980                                         struct data_in *data_in, tree expr)
 981 {
 982   unsigned i;
 983
 984   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
 985     {
 986       constructor_elt e;
 987       e.index = stream_read_tree (ib, data_in);
 988       e.value = stream_read_tree (ib, data_in);
 989       (*CONSTRUCTOR_ELTS (expr))[i] = e;
 990     }
 991 }
 992
 993
 994 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
 995    input block IB.  DATA_IN contains tables and descriptors for the
 996    file being read.  */
 997
 998 static void
 999 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1000                                        struct data_in *data_in, tree expr)
1001 {
1002   int i;
1003
1004   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1005     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1006   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1007 }
1008
1009
1010 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1011    contains tables and descriptors for the file being read.  */
1012
1013 void
1014 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1015                          tree expr)
1016 {
1017   enum tree_code code;
1018
1019   code = TREE_CODE (expr);
1020
1021   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1022     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1023
1024   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1025     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1026
1027   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1028     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1029
1030   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1031     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1032
1033   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1034     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1035
1036   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1037     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1038
1039   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1040     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1041
1042   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1043     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1044
1045   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1046     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1047
1048   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1049     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1050
1051   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1052     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1053
1054   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1055     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1056
1057   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1058     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1059
1060   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1061     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1062
1063   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1064     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1065
1066   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1067     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1068
1069   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1070     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1071
1072   if (code == OMP_CLAUSE)
1073     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1074 }
1075
1076
1077 /* Read an index IX from input block IB and return the tree node at
1078    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1079
1080 tree
1081 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1082 {
1083   unsigned HOST_WIDE_INT ix;
1084   tree result;
1085   enum LTO_tags expected_tag;
1086
1087   ix = streamer_read_uhwi (ib);
1088   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1089
1090   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1091   gcc_assert (result
1092               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1093
1094   return result;
1095 }