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 #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   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 (TREE_CODE (expr) == VAR_DECL)
 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       || TREE_CODE (expr) == VAR_DECL)
 263     {
 264       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 265       if (TREE_CODE (expr) == VAR_DECL
 266           || TREE_CODE (expr) == PARM_DECL)
 267         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 268     }
 269 }
 270
 271
 272 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 273    of expression EXPR from bitpack BP.  */
 274
 275 static void
 276 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 277 {
 278   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 279 }
 280
 281
 282 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 283    of expression EXPR from bitpack BP.  */
 284
 285 static void
 286 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 287 {
 288   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 289   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 290   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 291   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 292   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 293   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 294   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 295
 296   if (TREE_CODE (expr) == VAR_DECL)
 297     {
 298       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 299       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 300     }
 301
 302   if (TREE_CODE (expr) == FUNCTION_DECL)
 303     {
 304       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 305       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 306       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 307     }
 308 }
 309
 310
 311 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 312    of expression EXPR from bitpack BP.  */
 313
 314 static void
 315 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 316 {
 317   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 318                                                BUILT_IN_LAST);
 319   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 325   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 326   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 327   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 328   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 329   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 330   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 331                         = (unsigned) bp_unpack_value (bp, 1);
 332   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 333   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 337     {
 338       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 339                                                                             12);
 340       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 341           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 342         fatal_error (input_location,
 343                      "machine independent builtin code out of range");
 344       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 345         {
 346           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 347           if (!result || result == error_mark_node)
 348             fatal_error (input_location,
 349                          "target specific builtin not available");
 350         }
 351     }
 352 }
 353
 354
 355 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 356    of expression EXPR from bitpack BP.  */
 357
 358 static void
 359 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 360 {
 361   machine_mode mode;
 362
 363   mode = bp_unpack_machine_mode (bp);
 364   SET_TYPE_MODE (expr, mode);
 365   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 366   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 367      no streaming.  */
 368   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 369   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 370   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 371   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 372   TYPE_READONLY (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_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 381   SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
 382 #ifdef ACCEL_COMPILER
 383   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 384     SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
 385 #endif
 386 }
 387
 388
 389 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 390    of expression EXPR from bitpack BP.  */
 391
 392 static void
 393 unpack_ts_block_value_fields (struct data_in *data_in,
 394                               struct bitpack_d *bp, tree expr)
 395 {
 396   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 397   /* BLOCK_NUMBER is recomputed.  */
 398   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 399 }
 400
 401 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 402    structure of expression EXPR from bitpack BP.  */
 403
 404 static void
 405 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 406                                               struct bitpack_d *bp, tree expr)
 407 {
 408   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 409   vec_safe_push (all_translation_units, expr);
 410 }
 411
 412
 413 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 414    structure of expression EXPR from bitpack BP.  */
 415
 416 static void
 417 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 418                                    struct bitpack_d *bp, tree expr)
 419 {
 420   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 421   switch (OMP_CLAUSE_CODE (expr))
 422     {
 423     case OMP_CLAUSE_DEFAULT:
 424       OMP_CLAUSE_DEFAULT_KIND (expr)
 425         = bp_unpack_enum (bp, omp_clause_default_kind,
 426                           OMP_CLAUSE_DEFAULT_LAST);
 427       break;
 428     case OMP_CLAUSE_SCHEDULE:
 429       OMP_CLAUSE_SCHEDULE_KIND (expr)
 430         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 431                           OMP_CLAUSE_SCHEDULE_LAST);
 432       break;
 433     case OMP_CLAUSE_DEPEND:
 434       OMP_CLAUSE_DEPEND_KIND (expr)
 435         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 436       break;
 437     case OMP_CLAUSE_MAP:
 438       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 439                                                      GOMP_MAP_LAST));
 440       break;
 441     case OMP_CLAUSE_PROC_BIND:
 442       OMP_CLAUSE_PROC_BIND_KIND (expr)
 443         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 444                           OMP_CLAUSE_PROC_BIND_LAST);
 445       break;
 446     case OMP_CLAUSE_REDUCTION:
 447       OMP_CLAUSE_REDUCTION_CODE (expr)
 448         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 449       break;
 450     default:
 451       break;
 452     }
 453 }
 454
 455
 456 /* Read all the language-independent bitfield values for EXPR from IB.
 457    Return the partially unpacked bitpack so the caller can unpack any other
 458    bitfield values that the writer may have written.  */
 459
 460 void
 461 streamer_read_tree_bitfields (struct lto_input_block *ib,
 462                               struct data_in *data_in, tree expr)
 463 {
 464   enum tree_code code;
 465   struct bitpack_d bp;
 466
 467   /* Read the bitpack of non-pointer values from IB.  */
 468   bp = streamer_read_bitpack (ib);
 469
 470   /* The first word in BP contains the code of the tree that we
 471      are about to read.  */
 472   code = (enum tree_code) bp_unpack_value (&bp, 16);
 473   lto_tag_check (lto_tree_code_to_tag (code),
 474                  lto_tree_code_to_tag (TREE_CODE (expr)));
 475
 476   /* Note that all these functions are highly sensitive to changes in
 477      the types and sizes of each of the fields being packed.  */
 478   unpack_ts_base_value_fields (&bp, expr);
 479
 480   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 481     unpack_ts_int_cst_value_fields (&bp, expr);
 482
 483   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 484     unpack_ts_real_cst_value_fields (&bp, expr);
 485
 486   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 487     unpack_ts_fixed_cst_value_fields (&bp, expr);
 488
 489   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 490     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 491
 492   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 493     unpack_ts_decl_common_value_fields (&bp, expr);
 494
 495   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 496     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 497
 498   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 499     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 500
 501   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 502     unpack_ts_function_decl_value_fields (&bp, expr);
 503
 504   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 505     unpack_ts_type_common_value_fields (&bp, expr);
 506
 507   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 508     {
 509       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 510       if (code == MEM_REF
 511           || code == TARGET_MEM_REF)
 512         {
 513           MR_DEPENDENCE_CLIQUE (expr)
 514             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 515           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 516             MR_DEPENDENCE_BASE (expr)
 517               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 518         }
 519     }
 520
 521   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 522     unpack_ts_block_value_fields (data_in, &bp, expr);
 523
 524   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 525     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 526
 527   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 528     cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
 529
 530   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 531     {
 532       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 533       if (length > 0)
 534         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 535     }
 536
 537   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 538     {
 539       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 540       if (length > 0)
 541         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 542     }
 543
 544 #ifndef ACCEL_COMPILER
 545   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 546     {
 547       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 548       if (targetm.target_option.post_stream_in)
 549         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 550     }
 551 #endif
 552
 553   if (code == OMP_CLAUSE)
 554     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 555 }
 556
 557
 558 /* Materialize a new tree from input block IB using descriptors in
 559    DATA_IN.  The code for the new tree should match TAG.  Store in
 560    *IX_P the index into the reader cache where the new tree is stored.  */
 561
 562 tree
 563 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 564                      enum LTO_tags tag)
 565 {
 566   enum tree_code code;
 567   tree result;
 568 #ifdef LTO_STREAMER_DEBUG
 569   HOST_WIDE_INT orig_address_in_writer;
 570 #endif
 571
 572   result = NULL_TREE;
 573
 574 #ifdef LTO_STREAMER_DEBUG
 575   /* Read the word representing the memory address for the tree
 576      as it was written by the writer.  This is useful when
 577      debugging differences between the writer and reader.  */
 578   orig_address_in_writer = streamer_read_hwi (ib);
 579   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 580 #endif
 581
 582   code = lto_tag_to_tree_code (tag);
 583
 584   /* We should never see an SSA_NAME tree.  Only the version numbers of
 585      SSA names are ever written out.  See input_ssa_names.  */
 586   gcc_assert (code != SSA_NAME);
 587
 588   /* Instantiate a new tree using the header data.  */
 589   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 590     result = streamer_read_string_cst (data_in, ib);
 591   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 592     result = input_identifier (data_in, ib);
 593   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 594     {
 595       HOST_WIDE_INT len = streamer_read_hwi (ib);
 596       result = make_tree_vec (len);
 597     }
 598   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 599     {
 600       HOST_WIDE_INT len = streamer_read_hwi (ib);
 601       result = make_vector (len);
 602     }
 603   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 604     {
 605       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 606       result = make_tree_binfo (len);
 607     }
 608   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 609     {
 610       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 611       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 612       result = make_int_cst (len, ext_len);
 613     }
 614   else if (code == CALL_EXPR)
 615     {
 616       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 617       return build_vl_exp (CALL_EXPR, nargs + 3);
 618     }
 619   else if (code == OMP_CLAUSE)
 620     {
 621       enum omp_clause_code subcode
 622         = (enum omp_clause_code) streamer_read_uhwi (ib);
 623       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 624     }
 625   else
 626     {
 627       /* For all other nodes, materialize the tree with a raw
 628          make_node call.  */
 629       result = make_node (code);
 630     }
 631
 632 #ifdef LTO_STREAMER_DEBUG
 633   /* Store the original address of the tree as seen by the writer
 634      in RESULT's aux field.  This is useful when debugging streaming
 635      problems.  This way, a debugging session can be started on
 636      both writer and reader with a breakpoint using this address
 637      value in both.  */
 638   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 639 #endif
 640
 641   return result;
 642 }
 643
 644
 645 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 646    block IB.  DATA_IN contains tables and descriptors for the
 647    file being read.  */
 648
 649
 650 static void
 651 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 652                                    struct data_in *data_in, tree expr)
 653 {
 654   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 655     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 656 }
 657
 658
 659 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 660    block IB.  DATA_IN contains tables and descriptors for the
 661    file being read.  */
 662
 663 static void
 664 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 665                                    struct data_in *data_in, tree expr)
 666 {
 667   unsigned i;
 668   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 669     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 670 }
 671
 672
 673 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 674    block IB.  DATA_IN contains tables and descriptors for the
 675    file being read.  */
 676
 677 static void
 678 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 679                                     struct data_in *data_in, tree expr)
 680 {
 681   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 682   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 683 }
 684
 685
 686 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 687    from input block IB.  DATA_IN contains tables and descriptors for the
 688    file being read.  */
 689
 690 static void
 691 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 692                                          struct data_in *data_in, tree expr)
 693 {
 694   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 695   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 696 }
 697
 698
 699 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 700    input block IB.  DATA_IN contains tables and descriptors for the
 701    file being read.  */
 702
 703 static void
 704 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 705                                         struct data_in *data_in, tree expr)
 706 {
 707   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 708   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 709   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 710
 711   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 712      for early inlining so drop it on the floor instead of ICEing in
 713      dwarf2out.c.  */
 714
 715   if ((TREE_CODE (expr) == VAR_DECL
 716        || TREE_CODE (expr) == PARM_DECL)
 717       && DECL_HAS_VALUE_EXPR_P (expr))
 718     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 719
 720   if (TREE_CODE (expr) == VAR_DECL)
 721     {
 722       tree dexpr = stream_read_tree (ib, data_in);
 723       if (dexpr)
 724         SET_DECL_DEBUG_EXPR (expr, dexpr);
 725     }
 726 }
 727
 728
 729 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 730    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 731    file being read.  */
 732
 733 static void
 734 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 735                                             struct data_in *data_in, tree expr)
 736 {
 737   if (TREE_CODE (expr) == TYPE_DECL)
 738     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 739 }
 740
 741
 742 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 743    from input block IB.  DATA_IN contains tables and descriptors for the
 744    file being read.  */
 745
 746 static void
 747 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 748                                           struct data_in *data_in, tree expr)
 749 {
 750   tree id;
 751
 752   id = stream_read_tree (ib, data_in);
 753   if (id)
 754     {
 755       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 756       SET_DECL_ASSEMBLER_NAME (expr, id);
 757     }
 758 }
 759
 760
 761 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 762    input block IB.  DATA_IN contains tables and descriptors for the
 763    file being read.  */
 764
 765 static void
 766 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 767                                        struct data_in *data_in, tree expr)
 768 {
 769   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 770   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 771   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 772   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 773   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 774 }
 775
 776
 777 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 778    from input block IB.  DATA_IN contains tables and descriptors for the
 779    file being read.  */
 780
 781 static void
 782 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 783                                           struct data_in *data_in, tree expr)
 784 {
 785   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 786   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 787   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 788 #ifndef ACCEL_COMPILER
 789   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
 790 #endif
 791   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
 792
 793   /* If the file contains a function with an EH personality set,
 794      then it was compiled with -fexceptions.  In that case, initialize
 795      the backend EH machinery.  */
 796   if (DECL_FUNCTION_PERSONALITY (expr))
 797     lto_init_eh ();
 798 }
 799
 800
 801 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 802    input block IB.  DATA_IN contains tables and descriptors for the file
 803    being read.  */
 804
 805 static void
 806 lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
 807                                         struct data_in *data_in, tree expr)
 808 {
 809   TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
 810   TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 811   TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 812   TYPE_NAME (expr) = stream_read_tree (ib, data_in);
 813   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 814      reconstructed during fixup.  */
 815   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 816      during fixup.  */
 817   TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
 818   TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
 819   /* TYPE_CANONICAL gets re-computed during type merging.  */
 820   TYPE_CANONICAL (expr) = NULL_TREE;
 821   TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
 822 }
 823
 824 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 825    from input block IB.  DATA_IN contains tables and descriptors for the
 826    file being read.  */
 827
 828 static void
 829 lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
 830                                             struct data_in *data_in,
 831                                             tree expr)
 832 {
 833   if (TREE_CODE (expr) == ENUMERAL_TYPE)
 834     TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
 835   else if (TREE_CODE (expr) == ARRAY_TYPE)
 836     TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
 837   else if (RECORD_OR_UNION_TYPE_P (expr))
 838     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 839   else if (TREE_CODE (expr) == FUNCTION_TYPE
 840            || TREE_CODE (expr) == METHOD_TYPE)
 841     TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
 842
 843   if (!POINTER_TYPE_P (expr))
 844     TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
 845   TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
 846   if (RECORD_OR_UNION_TYPE_P (expr))
 847     TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
 848 }
 849
 850
 851 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 852    block IB.  DATA_IN contains tables and descriptors for the
 853    file being read.  */
 854
 855 static void
 856 lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
 857                                  struct data_in *data_in, tree expr)
 858 {
 859   TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
 860   TREE_VALUE (expr) = stream_read_tree (ib, data_in);
 861   TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
 862 }
 863
 864
 865 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 866    block IB.  DATA_IN contains tables and descriptors for the
 867    file being read.  */
 868
 869 static void
 870 lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
 871                                 struct data_in *data_in, tree expr)
 872 {
 873   int i;
 874
 875   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 876      instantiate EXPR.  */
 877   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 878     TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
 879 }
 880
 881
 882 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 883    block IB.  DATA_IN contains tables and descriptors for the
 884    file being read.  */
 885
 886
 887 static void
 888 lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
 889                                 struct data_in *data_in, tree expr)
 890 {
 891   int i;
 892   tree block;
 893
 894   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 895     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 896
 897   block = stream_read_tree (ib, data_in);
 898
 899   /* TODO: Block is stored in the locus information.  It may make more sense to
 900      to make it go via the location cache.  */
 901   if (block)
 902     {
 903       data_in->location_cache.apply_location_cache ();
 904       TREE_SET_BLOCK (expr, block);
 905     }
 906 }
 907
 908
 909 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 910    block IB.  DATA_IN contains tables and descriptors for the
 911    file being read.  */
 912
 913 static void
 914 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 915                                   struct data_in *data_in, tree expr)
 916 {
 917   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 918
 919   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 920
 921   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 922      the limited cases we can handle - those that represent inlined
 923      function scopes.  For the rest them on the floor instead of ICEing in
 924      dwarf2out.c.  */
 925   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 926   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 927      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 928      dwarf2out.c.  */
 929
 930   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 931      streaming time.  */
 932
 933   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 934      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 935      stream the child relationship explicitly.  */
 936   if (BLOCK_SUPERCONTEXT (expr)
 937       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 938     {
 939       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 940       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 941     }
 942
 943   /* The global block is rooted at the TU decl.  Hook it here to
 944      avoid the need to stream in this block during WPA time.  */
 945   else if (BLOCK_SUPERCONTEXT (expr)
 946            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 947     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 948
 949   /* The function-level block is connected at the time we read in
 950      function bodies for the same reason.  */
 951 }
 952
 953
 954 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 955    block IB.  DATA_IN contains tables and descriptors for the
 956    file being read.  */
 957
 958 static void
 959 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 960                                   struct data_in *data_in, tree expr)
 961 {
 962   unsigned i;
 963   tree t;
 964
 965   /* Note that the number of slots in EXPR was read in
 966      streamer_alloc_tree when instantiating EXPR.  However, the
 967      vector is empty so we cannot rely on vec::length to know how many
 968      elements to read.  So, this list is emitted as a 0-terminated
 969      list on the writer side.  */
 970   do
 971     {
 972       t = stream_read_tree (ib, data_in);
 973       if (t)
 974         BINFO_BASE_BINFOS (expr)->quick_push (t);
 975     }
 976   while (t);
 977
 978   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 979   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 980   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 981
 982   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 983      unpacking the bitfield section.  */
 984   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 985     {
 986       tree a = stream_read_tree (ib, data_in);
 987       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 988     }
 989   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 990      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 991 }
 992
 993
 994 /* Read all pointer fields in the TS_CONSTRUCTOR 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_constructor_tree_pointers (struct lto_input_block *ib,
1000                                         struct data_in *data_in, tree expr)
1001 {
1002   unsigned i;
1003
1004   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1005     {
1006       constructor_elt e;
1007       e.index = stream_read_tree (ib, data_in);
1008       e.value = stream_read_tree (ib, data_in);
1009       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1010     }
1011 }
1012
1013
1014 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1015    input block IB.  DATA_IN contains tables and descriptors for the
1016    file being read.  */
1017
1018 static void
1019 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1020                                        struct data_in *data_in, tree expr)
1021 {
1022   int i;
1023
1024   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1025     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1026   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1027 }
1028
1029
1030 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1031    contains tables and descriptors for the file being read.  */
1032
1033 void
1034 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1035                          tree expr)
1036 {
1037   enum tree_code code;
1038
1039   code = TREE_CODE (expr);
1040
1041   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1042     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1043
1044   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1045     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1046
1047   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1048     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1049
1050   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1051     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1052
1053   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1054     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1057     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1060     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1063     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1066     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1069     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1072     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1075     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1078     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1079
1080   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1081     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1082
1083   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1084     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1085
1086   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1087     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1088
1089   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1090     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1091
1092   if (code == OMP_CLAUSE)
1093     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1094 }
1095
1096
1097 /* Read an index IX from input block IB and return the tree node at
1098    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1099
1100 tree
1101 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1102 {
1103   unsigned HOST_WIDE_INT ix;
1104   tree result;
1105   enum LTO_tags expected_tag;
1106
1107   ix = streamer_read_uhwi (ib);
1108   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1109
1110   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1111   gcc_assert (result
1112               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1113
1114   return result;
1115 }
1116
1117
1118 /* Read a code and class from input block IB and return the
1119    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1120
1121 tree
1122 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1123 {
1124   enum built_in_class fclass;
1125   enum built_in_function fcode;
1126   const char *asmname;
1127   tree result;
1128
1129   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1130   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1131
1132   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1133
1134   if (fclass == BUILT_IN_NORMAL)
1135     {
1136       if (fcode >= END_BUILTINS)
1137         fatal_error (input_location,
1138                      "machine independent builtin code out of range");
1139       result = builtin_decl_explicit (fcode);
1140       if (!result)
1141         {
1142           if (fcode > BEGIN_CHKP_BUILTINS && fcode < END_CHKP_BUILTINS)
1143             {
1144               fcode = (enum built_in_function)
1145                       (fcode - BEGIN_CHKP_BUILTINS - 1);
1146               result = builtin_decl_explicit (fcode);
1147               result = chkp_maybe_clone_builtin_fndecl (result);
1148             }
1149           else if (fcode > BEGIN_SANITIZER_BUILTINS
1150                    && fcode < END_SANITIZER_BUILTINS)
1151             {
1152               initialize_sanitizer_builtins ();
1153               result = builtin_decl_explicit (fcode);
1154             }
1155         }
1156       gcc_assert (result);
1157     }
1158   else if (fclass == BUILT_IN_MD)
1159     {
1160       result = targetm.builtin_decl (fcode, true);
1161       if (!result || result == error_mark_node)
1162         fatal_error (input_location, "target specific builtin not available");
1163     }
1164   else
1165     gcc_unreachable ();
1166
1167   asmname = streamer_read_string (data_in, ib);
1168   if (asmname)
1169     set_builtin_user_assembler_name (result, asmname);
1170
1171   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1172
1173   return result;
1174 }