gcc-4_9/gcc/tree-streamer-in.c

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2014 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 "tree.h"
  27 #include "stringpool.h"
  28 #include "basic-block.h"
  29 #include "tree-ssa-alias.h"
  30 #include "internal-fn.h"
  31 #include "gimple-expr.h"
  32 #include "is-a.h"
  33 #include "gimple.h"
  34 #include "tree-streamer.h"
  35 #include "data-streamer.h"
  36 #include "streamer-hooks.h"
  37 #include "lto-streamer.h"
  38
  39 /* Read a STRING_CST from the string table in DATA_IN using input
  40    block IB.  */
  41
  42 tree
  43 streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
  44 {
  45   unsigned int len;
  46   const char * ptr;
  47
  48   ptr = streamer_read_indexed_string (data_in, ib, &len);
  49   if (!ptr)
  50     return NULL;
  51   return build_string (len, ptr);
  52 }
  53
  54
  55 /* Read an IDENTIFIER from the string table in DATA_IN using input
  56    block IB.  */
  57
  58 static tree
  59 input_identifier (struct data_in *data_in, struct lto_input_block *ib)
  60 {
  61   unsigned int len;
  62   const char *ptr;
  63
  64   ptr = streamer_read_indexed_string (data_in, ib, &len);
  65   if (!ptr)
  66     return NULL;
  67   return get_identifier_with_length (ptr, len);
  68 }
  69
  70
  71 /* Read a chain of tree nodes from input block IB. DATA_IN contains
  72    tables and descriptors for the file being read.  */
  73
  74 tree
  75 streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
  76 {
  77   tree first, prev, curr;
  78
  79   /* The chain is written as NULL terminated list of trees.  */
  80   first = prev = NULL_TREE;
  81   do
  82     {
  83       curr = stream_read_tree (ib, data_in);
  84       if (prev)
  85         TREE_CHAIN (prev) = curr;
  86       else
  87         first = curr;
  88
  89       prev = curr;
  90     }
  91   while (curr);
  92
  93   return first;
  94 }
  95
  96
  97 /* Unpack all the non-pointer fields of the TS_BASE structure of
  98    expression EXPR from bitpack BP.  */
  99
 100 static void
 101 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 102 {
 103   /* Note that the code for EXPR has already been unpacked to create EXPR in
 104      streamer_alloc_tree.  */
 105   if (!TYPE_P (expr))
 106     {
 107       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 108       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 109       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 110
 111       /* TREE_PUBLIC is used on types to indicate that the type
 112          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 113          so we skip it here.  */
 114       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 115     }
 116   else
 117     bp_unpack_value (bp, 4);
 118   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 119   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 120   if (DECL_P (expr))
 121     DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 122   else if (TYPE_P (expr))
 123     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 124   else
 125     bp_unpack_value (bp, 1);
 126   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 127   if (TYPE_P (expr))
 128     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 129   else
 130     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 131   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 132   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   if (TREE_CODE (expr) != TREE_BINFO)
 134     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 135   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   if (TYPE_P (expr))
 138     {
 139       TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 140       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 141     }
 142   else if (TREE_CODE (expr) == SSA_NAME)
 143     SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 144   else
 145     bp_unpack_value (bp, 1);
 146 }
 147
 148
 149 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 150    expression EXPR from bitpack BP.  */
 151
 152 static void
 153 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 154 {
 155   TREE_INT_CST_LOW (expr) = bp_unpack_var_len_unsigned (bp);
 156   TREE_INT_CST_HIGH (expr) = bp_unpack_var_len_int (bp);
 157 }
 158
 159
 160 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 161    expression EXPR from bitpack BP.  */
 162
 163 static void
 164 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 165 {
 166   unsigned i;
 167   REAL_VALUE_TYPE r;
 168   REAL_VALUE_TYPE *rp;
 169
 170   /* Clear all bits of the real value type so that we can later do
 171      bitwise comparisons to see if two values are the same.  */
 172   memset (&r, 0, sizeof r);
 173   r.cl = (unsigned) bp_unpack_value (bp, 2);
 174   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 175   r.sign = (unsigned) bp_unpack_value (bp, 1);
 176   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 177   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 178   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 179   for (i = 0; i < SIGSZ; i++)
 180     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 181
 182   rp = ggc_alloc_real_value ();
 183   memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
 184   TREE_REAL_CST_PTR (expr) = rp;
 185 }
 186
 187
 188 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 189    expression EXPR from bitpack BP.  */
 190
 191 static void
 192 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 193 {
 194   FIXED_VALUE_TYPE *fp = ggc_alloc_fixed_value ();
 195   fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 196   fp->data.low = bp_unpack_var_len_int (bp);
 197   fp->data.high = bp_unpack_var_len_int (bp);
 198   TREE_FIXED_CST_PTR (expr) = fp;
 199 }
 200
 201 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 202    of expression EXPR from bitpack BP.  */
 203
 204 static void
 205 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 206 {
 207   DECL_MODE (expr) = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 208   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 209   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 210   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 211   DECL_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 212   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 213   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 214   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 215   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 216   DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 217   DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
 218
 219   if (TREE_CODE (expr) == LABEL_DECL)
 220     {
 221       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 222
 223       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 224          force gimple_set_bb to recreate label_to_block_map.  */
 225       LABEL_DECL_UID (expr) = -1;
 226     }
 227
 228   if (TREE_CODE (expr) == FIELD_DECL)
 229     {
 230       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 231       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 232       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 233     }
 234
 235   if (TREE_CODE (expr) == VAR_DECL)
 236     {
 237       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 238       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 239     }
 240
 241   if (TREE_CODE (expr) == RESULT_DECL
 242       || TREE_CODE (expr) == PARM_DECL
 243       || TREE_CODE (expr) == VAR_DECL)
 244     {
 245       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 246       if (TREE_CODE (expr) == VAR_DECL
 247           || TREE_CODE (expr) == PARM_DECL)
 248         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 249     }
 250 }
 251
 252
 253 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 254    of expression EXPR from bitpack BP.  */
 255
 256 static void
 257 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 258 {
 259   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 260 }
 261
 262
 263 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 264    of expression EXPR from bitpack BP.  */
 265
 266 static void
 267 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 268 {
 269   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 270   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 271   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 272   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 273   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 274   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 275   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 276
 277   if (TREE_CODE (expr) == VAR_DECL)
 278     {
 279       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 280       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 281       DECL_TLS_MODEL (expr) = (enum tls_model) bp_unpack_value (bp,  3);
 282     }
 283
 284   if (TREE_CODE (expr) == FUNCTION_DECL)
 285     {
 286       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 287       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 288       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 289     }
 290   if (VAR_OR_FUNCTION_DECL_P (expr))
 291     {
 292       priority_type p;
 293       p = (priority_type) bp_unpack_var_len_unsigned (bp);
 294       SET_DECL_INIT_PRIORITY (expr, p);
 295     }
 296 }
 297
 298
 299 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 300    of expression EXPR from bitpack BP.  */
 301
 302 static void
 303 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 304 {
 305   DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
 306                                                BUILT_IN_LAST);
 307   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 308   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 309   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 310   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 311   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 312   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 313   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 314   DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
 315   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 316   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 317   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 318   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 319                         = (unsigned) bp_unpack_value (bp, 1);
 320   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 321   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 322   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 323   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 324   if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
 325     {
 326       DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
 327                                                                             11);
 328       if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
 329           && DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
 330         fatal_error ("machine independent builtin code out of range");
 331       else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
 332         {
 333           tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
 334           if (!result || result == error_mark_node)
 335             fatal_error ("target specific builtin not available");
 336         }
 337     }
 338   if (DECL_STATIC_DESTRUCTOR (expr))
 339     {
 340       priority_type p;
 341       p = (priority_type) bp_unpack_var_len_unsigned (bp);
 342       SET_DECL_FINI_PRIORITY (expr, p);
 343     }
 344 }
 345
 346
 347 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 348    of expression EXPR from bitpack BP.  */
 349
 350 static void
 351 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 352 {
 353   enum machine_mode mode;
 354
 355   mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
 356   SET_TYPE_MODE (expr, mode);
 357   TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 358   TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
 359   TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
 360   if (RECORD_OR_UNION_TYPE_P (expr))
 361     {
 362       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 363       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 364     }
 365   else if (TREE_CODE (expr) == ARRAY_TYPE)
 366     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 367   TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 368   TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
 369   TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 370   TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 371   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 372   TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
 373   TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
 374 }
 375
 376
 377 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 378    of expression EXPR from bitpack BP.  */
 379
 380 static void
 381 unpack_ts_block_value_fields (struct data_in *data_in,
 382                               struct bitpack_d *bp, tree expr)
 383 {
 384   BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
 385   /* BLOCK_NUMBER is recomputed.  */
 386   BLOCK_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 387 }
 388
 389 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 390    structure of expression EXPR from bitpack BP.  */
 391
 392 static void
 393 unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
 394                                               struct bitpack_d *bp, tree expr)
 395 {
 396   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 397   vec_safe_push (all_translation_units, expr);
 398 }
 399
 400 /* Unpack a TS_OPTIMIZATION tree from BP into EXPR.  */
 401
 402 static void
 403 unpack_ts_optimization (struct bitpack_d *bp, tree expr)
 404 {
 405   unsigned i, len;
 406   struct cl_optimization *t = TREE_OPTIMIZATION (expr);
 407
 408   len = sizeof (struct cl_optimization);
 409   for (i = 0; i < len; i++)
 410     ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
 411   if (bp_unpack_value (bp, 32) != 0x12345678)
 412     fatal_error ("cl_optimization size mismatch in LTO reader and writer");
 413 }
 414
 415
 416 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 417    structure of expression EXPR from bitpack BP.  */
 418
 419 static void
 420 unpack_ts_omp_clause_value_fields (struct data_in *data_in,
 421                                    struct bitpack_d *bp, tree expr)
 422 {
 423   OMP_CLAUSE_LOCATION (expr) = stream_input_location (bp, data_in);
 424   switch (OMP_CLAUSE_CODE (expr))
 425     {
 426     case OMP_CLAUSE_DEFAULT:
 427       OMP_CLAUSE_DEFAULT_KIND (expr)
 428         = bp_unpack_enum (bp, omp_clause_default_kind,
 429                           OMP_CLAUSE_DEFAULT_LAST);
 430       break;
 431     case OMP_CLAUSE_SCHEDULE:
 432       OMP_CLAUSE_SCHEDULE_KIND (expr)
 433         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 434                           OMP_CLAUSE_SCHEDULE_LAST);
 435       break;
 436     case OMP_CLAUSE_DEPEND:
 437       OMP_CLAUSE_DEPEND_KIND (expr)
 438         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 439       break;
 440     case OMP_CLAUSE_MAP:
 441       OMP_CLAUSE_MAP_KIND (expr)
 442         = bp_unpack_enum (bp, omp_clause_map_kind, OMP_CLAUSE_MAP_LAST);
 443       break;
 444     case OMP_CLAUSE_PROC_BIND:
 445       OMP_CLAUSE_PROC_BIND_KIND (expr)
 446         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 447                           OMP_CLAUSE_PROC_BIND_LAST);
 448       break;
 449     case OMP_CLAUSE_REDUCTION:
 450       OMP_CLAUSE_REDUCTION_CODE (expr)
 451         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 452       break;
 453     default:
 454       break;
 455     }
 456 }
 457
 458 /* Unpack all the non-pointer fields in EXPR into a bit pack.  */
 459
 460 static void
 461 unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
 462 {
 463   enum tree_code code;
 464
 465   code = TREE_CODE (expr);
 466
 467   /* Note that all these functions are highly sensitive to changes in
 468      the types and sizes of each of the fields being packed.  */
 469   unpack_ts_base_value_fields (bp, expr);
 470
 471   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 472     unpack_ts_int_cst_value_fields (bp, expr);
 473
 474   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 475     unpack_ts_real_cst_value_fields (bp, expr);
 476
 477   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 478     unpack_ts_fixed_cst_value_fields (bp, expr);
 479
 480   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 481     DECL_SOURCE_LOCATION (expr) = stream_input_location (bp, data_in);
 482
 483   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 484     unpack_ts_decl_common_value_fields (bp, expr);
 485
 486   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 487     unpack_ts_decl_wrtl_value_fields (bp, expr);
 488
 489   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 490     unpack_ts_decl_with_vis_value_fields (bp, expr);
 491
 492   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 493     unpack_ts_function_decl_value_fields (bp, expr);
 494
 495   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 496     unpack_ts_type_common_value_fields (bp, expr);
 497
 498   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 499     {
 500       SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
 501       if (code == MEM_REF
 502           || code == TARGET_MEM_REF)
 503         {
 504           MR_DEPENDENCE_CLIQUE (expr)
 505             = (unsigned)bp_unpack_value (bp, sizeof (short) * 8);
 506           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 507             MR_DEPENDENCE_BASE (expr)
 508               = (unsigned)bp_unpack_value (bp, sizeof (short) * 8);
 509         }
 510     }
 511
 512   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 513     unpack_ts_block_value_fields (data_in, bp, expr);
 514
 515   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 516     unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
 517
 518   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 519     gcc_unreachable ();
 520
 521   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 522     unpack_ts_optimization (bp, expr);
 523
 524   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 525     {
 526       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 527       if (length > 0)
 528         vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
 529     }
 530
 531   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 532     {
 533       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (bp);
 534       if (length > 0)
 535         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
 536     }
 537
 538   if (code == OMP_CLAUSE)
 539     unpack_ts_omp_clause_value_fields (data_in, bp, expr);
 540 }
 541
 542
 543 /* Read all the language-independent bitfield values for EXPR from IB.
 544    Return the partially unpacked bitpack so the caller can unpack any other
 545    bitfield values that the writer may have written.  */
 546
 547 struct bitpack_d
 548 streamer_read_tree_bitfields (struct lto_input_block *ib,
 549                               struct data_in *data_in, tree expr)
 550 {
 551   enum tree_code code;
 552   struct bitpack_d bp;
 553
 554   /* Read the bitpack of non-pointer values from IB.  */
 555   bp = streamer_read_bitpack (ib);
 556
 557   /* The first word in BP contains the code of the tree that we
 558      are about to read.  */
 559   code = (enum tree_code) bp_unpack_value (&bp, 16);
 560   lto_tag_check (lto_tree_code_to_tag (code),
 561                  lto_tree_code_to_tag (TREE_CODE (expr)));
 562
 563   /* Unpack all the value fields from BP.  */
 564   unpack_value_fields (data_in, &bp, expr);
 565
 566   return bp;
 567 }
 568
 569
 570 /* Materialize a new tree from input block IB using descriptors in
 571    DATA_IN.  The code for the new tree should match TAG.  Store in
 572    *IX_P the index into the reader cache where the new tree is stored.  */
 573
 574 tree
 575 streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
 576                      enum LTO_tags tag)
 577 {
 578   enum tree_code code;
 579   tree result;
 580 #ifdef LTO_STREAMER_DEBUG
 581   HOST_WIDEST_INT orig_address_in_writer;
 582 #endif
 583
 584   result = NULL_TREE;
 585
 586 #ifdef LTO_STREAMER_DEBUG
 587   /* Read the word representing the memory address for the tree
 588      as it was written by the writer.  This is useful when
 589      debugging differences between the writer and reader.  */
 590   orig_address_in_writer = streamer_read_hwi (ib);
 591   gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
 592 #endif
 593
 594   code = lto_tag_to_tree_code (tag);
 595
 596   /* We should never see an SSA_NAME tree.  Only the version numbers of
 597      SSA names are ever written out.  See input_ssa_names.  */
 598   gcc_assert (code != SSA_NAME);
 599
 600   /* Instantiate a new tree using the header data.  */
 601   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 602     result = streamer_read_string_cst (data_in, ib);
 603   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 604     result = input_identifier (data_in, ib);
 605   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 606     {
 607       HOST_WIDE_INT len = streamer_read_hwi (ib);
 608       result = make_tree_vec (len);
 609     }
 610   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 611     {
 612       HOST_WIDE_INT len = streamer_read_hwi (ib);
 613       result = make_vector (len);
 614     }
 615   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 616     {
 617       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 618       result = make_tree_binfo (len);
 619     }
 620   else if (code == CALL_EXPR)
 621     {
 622       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 623       return build_vl_exp (CALL_EXPR, nargs + 3);
 624     }
 625   else if (code == OMP_CLAUSE)
 626     {
 627       enum omp_clause_code subcode
 628         = (enum omp_clause_code) streamer_read_uhwi (ib);
 629       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 630     }
 631   else
 632     {
 633       /* For all other nodes, materialize the tree with a raw
 634          make_node call.  */
 635       result = make_node (code);
 636     }
 637
 638 #ifdef LTO_STREAMER_DEBUG
 639   /* Store the original address of the tree as seen by the writer
 640      in RESULT's aux field.  This is useful when debugging streaming
 641      problems.  This way, a debugging session can be started on
 642      both writer and reader with a breakpoint using this address
 643      value in both.  */
 644   lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
 645 #endif
 646
 647   return result;
 648 }
 649
 650
 651 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 652    block IB.  DATA_IN contains tables and descriptors for the
 653    file being read.  */
 654
 655
 656 static void
 657 lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
 658                                    struct data_in *data_in, tree expr)
 659 {
 660   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 661     TREE_TYPE (expr) = stream_read_tree (ib, data_in);
 662 }
 663
 664
 665 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 666    block IB.  DATA_IN contains tables and descriptors for the
 667    file being read.  */
 668
 669 static void
 670 lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
 671                                    struct data_in *data_in, tree expr)
 672 {
 673   unsigned i;
 674   for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
 675     VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
 676 }
 677
 678
 679 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 680    block IB.  DATA_IN contains tables and descriptors for the
 681    file being read.  */
 682
 683 static void
 684 lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
 685                                     struct data_in *data_in, tree expr)
 686 {
 687   TREE_REALPART (expr) = stream_read_tree (ib, data_in);
 688   TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
 689 }
 690
 691
 692 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 693    from input block IB.  DATA_IN contains tables and descriptors for the
 694    file being read.  */
 695
 696 static void
 697 lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
 698                                          struct data_in *data_in, tree expr)
 699 {
 700   DECL_NAME (expr) = stream_read_tree (ib, data_in);
 701   DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
 702 }
 703
 704
 705 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 706    input block IB.  DATA_IN contains tables and descriptors for the
 707    file being read.  */
 708
 709 static void
 710 lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
 711                                         struct data_in *data_in, tree expr)
 712 {
 713   DECL_SIZE (expr) = stream_read_tree (ib, data_in);
 714   DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
 715   DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
 716
 717   /* Do not stream DECL_ABSTRACT_ORIGIN.  We cannot handle debug information
 718      for early inlining so drop it on the floor instead of ICEing in
 719      dwarf2out.c.  */
 720
 721   if ((TREE_CODE (expr) == VAR_DECL
 722        || TREE_CODE (expr) == PARM_DECL)
 723       && DECL_HAS_VALUE_EXPR_P (expr))
 724     SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
 725
 726   if (TREE_CODE (expr) == VAR_DECL)
 727     {
 728       tree dexpr = stream_read_tree (ib, data_in);
 729       if (dexpr)
 730         SET_DECL_DEBUG_EXPR (expr, dexpr);
 731     }
 732 }
 733
 734
 735 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 736    EXPR from input block IB.  DATA_IN contains tables and descriptors for the
 737    file being read.  */
 738
 739 static void
 740 lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
 741                                             struct data_in *data_in, tree expr)
 742 {
 743   if (TREE_CODE (expr) == TYPE_DECL)
 744     DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
 745   DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
 746 }
 747
 748
 749 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 750    from input block IB.  DATA_IN contains tables and descriptors for the
 751    file being read.  */
 752
 753 static void
 754 lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
 755                                           struct data_in *data_in, tree expr)
 756 {
 757   tree id;
 758
 759   id = stream_read_tree (ib, data_in);
 760   if (id)
 761     {
 762       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 763       SET_DECL_ASSEMBLER_NAME (expr, id);
 764     }
 765
 766   DECL_SECTION_NAME (expr) = stream_read_tree (ib, data_in);
 767   DECL_COMDAT_GROUP (expr) = stream_read_tree (ib, data_in);
 768 }
 769
 770
 771 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 772    input block IB.  DATA_IN contains tables and descriptors for the
 773    file being read.  */
 774
 775 static void
 776 lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
 777                                        struct data_in *data_in, tree expr)
 778 {
 779   DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
 780   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
 781   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
 782   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
 783   DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
 784 }
 785
 786
 787 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 788    from input block IB.  DATA_IN contains tables and descriptors for the
 789    file being read.  */
 790
 791 static void
 792 lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
 793                                           struct data_in *data_in, tree expr)
 794 {
 795   /* DECL_STRUCT_FUNCTION is handled by lto_input_function.  FIXME lto,
 796      maybe it should be handled here?  */
 797   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
 798   /* DECL_FUNCTION_SPECIFIC_TARGET is regenerated from attributes.  */
 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
 901   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 902     TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
 903
 904   TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
 905 }
 906
 907
 908 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 909    block IB.  DATA_IN contains tables and descriptors for the
 910    file being read.  */
 911
 912 static void
 913 lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
 914                                   struct data_in *data_in, tree expr)
 915 {
 916   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 917
 918   BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
 919
 920   /* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
 921      the limited cases we can handle - those that represent inlined
 922      function scopes.  For the rest them on the floor instead of ICEing in
 923      dwarf2out.c.  */
 924   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
 925   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 926      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 927      dwarf2out.c.  */
 928
 929   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 930      streaming time.  */
 931
 932   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 933      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 934      stream the child relationship explicitly.  */
 935   if (BLOCK_SUPERCONTEXT (expr)
 936       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 937     {
 938       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 939       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 940     }
 941
 942   /* The global block is rooted at the TU decl.  Hook it here to
 943      avoid the need to stream in this block during WPA time.  */
 944   else if (BLOCK_SUPERCONTEXT (expr)
 945            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 946     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 947
 948   /* The function-level block is connected at the time we read in
 949      function bodies for the same reason.  */
 950 }
 951
 952
 953 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 954    block IB.  DATA_IN contains tables and descriptors for the
 955    file being read.  */
 956
 957 static void
 958 lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
 959                                   struct data_in *data_in, tree expr)
 960 {
 961   unsigned i;
 962   tree t;
 963
 964   /* Note that the number of slots in EXPR was read in
 965      streamer_alloc_tree when instantiating EXPR.  However, the
 966      vector is empty so we cannot rely on vec::length to know how many
 967      elements to read.  So, this list is emitted as a 0-terminated
 968      list on the writer side.  */
 969   do
 970     {
 971       t = stream_read_tree (ib, data_in);
 972       if (t)
 973         BINFO_BASE_BINFOS (expr)->quick_push (t);
 974     }
 975   while (t);
 976
 977   BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
 978   BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
 979   BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
 980
 981   /* The vector of BINFO_BASE_ACCESSES is pre-allocated during
 982      unpacking the bitfield section.  */
 983   for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
 984     {
 985       tree a = stream_read_tree (ib, data_in);
 986       (*BINFO_BASE_ACCESSES (expr))[i] = a;
 987     }
 988   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
 989      and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
 990 }
 991
 992
 993 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
 994    input block IB.  DATA_IN contains tables and descriptors for the
 995    file being read.  */
 996
 997 static void
 998 lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
 999                                         struct data_in *data_in, tree expr)
1000 {
1001   unsigned i;
1002
1003   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1004     {
1005       constructor_elt e;
1006       e.index = stream_read_tree (ib, data_in);
1007       e.value = stream_read_tree (ib, data_in);
1008       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1009     }
1010 }
1011
1012
1013 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1014    input block IB.  DATA_IN contains tables and descriptors for the
1015    file being read.  */
1016
1017 static void
1018 lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
1019                                        struct data_in *data_in, tree expr)
1020 {
1021   int i;
1022
1023   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1024     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
1025   OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
1026 }
1027
1028
1029 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1030    contains tables and descriptors for the file being read.  */
1031
1032 void
1033 streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
1034                          tree expr)
1035 {
1036   enum tree_code code;
1037
1038   code = TREE_CODE (expr);
1039
1040   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1041     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1042
1043   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1044     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1045
1046   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1047     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1048
1049   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1050     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1051
1052   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1053     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1054
1055   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1056     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1057
1058   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1059     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1062     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1065     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1068     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1069
1070   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1071     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1072
1073   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1074     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1075
1076   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1077     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1078
1079   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1080     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1081
1082   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1083     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1084
1085   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1086     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1087
1088   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1089     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1090
1091   if (code == OMP_CLAUSE)
1092     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1093 }
1094
1095
1096 /* Read an index IX from input block IB and return the tree node at
1097    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1098
1099 tree
1100 streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
1101 {
1102   unsigned HOST_WIDE_INT ix;
1103   tree result;
1104   enum LTO_tags expected_tag;
1105
1106   ix = streamer_read_uhwi (ib);
1107   expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1108
1109   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1110   gcc_assert (result
1111               && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1112
1113   return result;
1114 }
1115
1116
1117 /* Read a code and class from input block IB and return the
1118    corresponding builtin.  DATA_IN is as in stream_read_tree.  */
1119
1120 tree
1121 streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
1122 {
1123   enum built_in_class fclass;
1124   enum built_in_function fcode;
1125   const char *asmname;
1126   tree result;
1127
1128   fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
1129   gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
1130
1131   fcode = (enum built_in_function) streamer_read_uhwi (ib);
1132
1133   if (fclass == BUILT_IN_NORMAL)
1134     {
1135       if (fcode >= END_BUILTINS)
1136         fatal_error ("machine independent builtin code out of range");
1137       result = builtin_decl_explicit (fcode);
1138       gcc_assert (result);
1139     }
1140   else if (fclass == BUILT_IN_MD)
1141     {
1142       result = targetm.builtin_decl (fcode, true);
1143       if (!result || result == error_mark_node)
1144         fatal_error ("target specific builtin not available");
1145     }
1146   else
1147     gcc_unreachable ();
1148
1149   asmname = streamer_read_string (data_in, ib);
1150   if (asmname)
1151     set_builtin_user_assembler_name (result, asmname);
1152
1153   streamer_tree_cache_append (data_in->reader_cache, result, 0);
1154
1155   return result;
1156 }