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