gcc/tree-streamer-in.cc

   1 /* Routines for reading trees from a file stream.
   2
   3    Copyright (C) 2011-2022 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 "gomp-constants.h"
  34 #include "stringpool.h"
  35 #include "attribs.h"
  36 #include "asan.h"
  37 #include "opts.h"
  38
  39
  40 /* Read a STRING_CST from the string table in DATA_IN using input
  41    block IB.  */
  42
  43 tree
  44 streamer_read_string_cst (class data_in *data_in, class lto_input_block *ib)
  45 {
  46   unsigned int len;
  47   const char * ptr;
  48
  49   ptr = streamer_read_indexed_string (data_in, ib, &len);
  50   if (!ptr)
  51     return NULL;
  52   return build_string (len, ptr);
  53 }
  54
  55
  56 /* Read an IDENTIFIER from the string table in DATA_IN using input
  57    block IB.  */
  58
  59 static tree
  60 input_identifier (class data_in *data_in, class 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 get_identifier_with_length (ptr, len);
  69 }
  70
  71
  72 /* Read a chain of tree nodes from input block IB.  DATA_IN contains
  73    tables and descriptors for the file being read.  */
  74
  75 static tree
  76 streamer_read_chain (class lto_input_block *ib, class data_in *data_in)
  77 {
  78   tree first, prev, curr;
  79
  80   /* The chain is written as NULL terminated list of trees.  */
  81   first = prev = NULL_TREE;
  82   do
  83     {
  84       curr = stream_read_tree_ref (ib, data_in);
  85       if (prev)
  86         TREE_CHAIN (prev) = curr;
  87       else
  88         first = curr;
  89
  90       prev = curr;
  91     }
  92   while (curr);
  93
  94   return first;
  95 }
  96
  97
  98 /* Unpack all the non-pointer fields of the TS_BASE structure of
  99    expression EXPR from bitpack BP.  */
 100
 101 static inline void
 102 unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
 103 {
 104   /* Note that the code for EXPR has already been unpacked to create EXPR in
 105      streamer_alloc_tree.  */
 106   if (!TYPE_P (expr))
 107     {
 108       TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
 109       TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
 110       TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
 111
 112       /* TREE_PUBLIC is used on types to indicate that the type
 113          has a TYPE_CACHED_VALUES vector.  This is not streamed out,
 114          so we skip it here.  */
 115       TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 116     }
 117   else
 118     bp_unpack_value (bp, 4);
 119   TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 120   TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
 121   if (DECL_P (expr))
 122     {
 123       DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 124       DECL_NAMELESS (expr) = (unsigned) bp_unpack_value (bp, 1);
 125     }
 126   else if (TYPE_P (expr))
 127     TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
 128   else
 129     bp_unpack_value (bp, 1);
 130   TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
 131   if (TYPE_P (expr))
 132     TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 133   else
 134     TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
 135   TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
 136   TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
 137   if (TREE_CODE (expr) != TREE_BINFO)
 138     TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
 139   else
 140     bp_unpack_value (bp, 1);
 141   TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
 142   TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
 143   if (TYPE_P (expr))
 144     {
 145       if (AGGREGATE_TYPE_P (expr))
 146         TYPE_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 147       else
 148         TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
 149 #ifndef ACCEL_COMPILER
 150       TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
 151 #endif
 152     }
 153   else if (TREE_CODE (expr) == BIT_FIELD_REF || TREE_CODE (expr) == MEM_REF)
 154     {
 155       REF_REVERSE_STORAGE_ORDER (expr) = (unsigned) bp_unpack_value (bp, 1);
 156       bp_unpack_value (bp, 8);
 157     }
 158   else if (TREE_CODE (expr) == SSA_NAME)
 159     {
 160       SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
 161       bp_unpack_value (bp, 8);
 162     }
 163   else if (TREE_CODE (expr) == CALL_EXPR)
 164     {
 165       CALL_EXPR_BY_DESCRIPTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 166       bp_unpack_value (bp, 8);
 167     }
 168   else
 169     bp_unpack_value (bp, 9);
 170 }
 171
 172
 173 /* Unpack all the non-pointer fields of the TS_INT_CST structure of
 174    expression EXPR from bitpack BP.  */
 175
 176 static void
 177 unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
 178 {
 179   int i;
 180   for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
 181     TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
 182 }
 183
 184
 185 /* Unpack all the non-pointer fields of the TS_REAL_CST structure of
 186    expression EXPR from bitpack BP.  */
 187
 188 static void
 189 unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
 190 {
 191   unsigned i;
 192   REAL_VALUE_TYPE r;
 193
 194   /* Clear all bits of the real value type so that we can later do
 195      bitwise comparisons to see if two values are the same.  */
 196   memset (&r, 0, sizeof r);
 197   r.cl = (unsigned) bp_unpack_value (bp, 2);
 198   r.decimal = (unsigned) bp_unpack_value (bp, 1);
 199   r.sign = (unsigned) bp_unpack_value (bp, 1);
 200   r.signalling = (unsigned) bp_unpack_value (bp, 1);
 201   r.canonical = (unsigned) bp_unpack_value (bp, 1);
 202   r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
 203   for (i = 0; i < SIGSZ; i++)
 204     r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
 205
 206   memcpy (TREE_REAL_CST_PTR (expr), &r, sizeof (REAL_VALUE_TYPE));
 207 }
 208
 209
 210 /* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
 211    expression EXPR from bitpack BP.  */
 212
 213 static void
 214 unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
 215 {
 216   FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
 217   fp->mode = as_a <scalar_mode> (bp_unpack_machine_mode (bp));
 218   fp->data.low = bp_unpack_var_len_int (bp);
 219   fp->data.high = bp_unpack_var_len_int (bp);
 220   TREE_FIXED_CST_PTR (expr) = fp;
 221 }
 222
 223 /* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
 224    of expression EXPR from bitpack BP.  */
 225
 226 static void
 227 unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
 228 {
 229   SET_DECL_MODE (expr, bp_unpack_machine_mode (bp));
 230   DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 231   DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 232   DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 233   DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 234   DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 235   DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
 236   DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 237   DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
 238   DECL_NOT_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 239   SET_DECL_ALIGN (expr, (unsigned) bp_unpack_var_len_unsigned (bp));
 240 #ifdef ACCEL_COMPILER
 241   if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
 242     SET_DECL_ALIGN (expr, targetm.absolute_biggest_alignment);
 243 #endif
 244   if (TREE_CODE (expr) == LABEL_DECL)
 245     {
 246       EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
 247
 248       /* Always assume an initial value of -1 for LABEL_DECL_UID to
 249          force gimple_set_bb to recreate label_to_block_map.  */
 250       LABEL_DECL_UID (expr) = -1;
 251     }
 252
 253   else if (TREE_CODE (expr) == FIELD_DECL)
 254     {
 255       DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
 256       DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 257       DECL_PADDING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 258       unsigned val = (unsigned) bp_unpack_value (bp, 1);
 259       if (DECL_BIT_FIELD (expr))
 260         SET_DECL_FIELD_CXX_ZERO_WIDTH_BIT_FIELD (expr, val);
 261       else
 262         SET_DECL_FIELD_ABI_IGNORED (expr, val);
 263       expr->decl_common.off_align = bp_unpack_value (bp, 8);
 264       DECL_NOT_FLEXARRAY (expr) = (unsigned) bp_unpack_value (bp, 1);
 265     }
 266
 267   else if (VAR_P (expr))
 268     {
 269       DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 270       DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
 271     }
 272
 273   else if (TREE_CODE (expr) == PARM_DECL)
 274     DECL_HIDDEN_STRING_LENGTH (expr) = (unsigned) bp_unpack_value (bp, 1);
 275
 276   if (TREE_CODE (expr) == RESULT_DECL
 277       || TREE_CODE (expr) == PARM_DECL
 278       || VAR_P (expr))
 279     {
 280       DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
 281       if (VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 282         DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 283     }
 284 }
 285
 286
 287 /* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
 288    of expression EXPR from bitpack BP.  */
 289
 290 static void
 291 unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
 292 {
 293   DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 294 }
 295
 296
 297 /* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
 298    of expression EXPR from bitpack BP.  */
 299
 300 static void
 301 unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
 302 {
 303   DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
 304   DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 305   DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
 306   DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp,  1);
 307   DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp,  1);
 308   DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp,  2);
 309   DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp,  1);
 310
 311   if (VAR_P (expr))
 312     {
 313       DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
 314       DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
 315     }
 316
 317   if (TREE_CODE (expr) == FUNCTION_DECL)
 318     {
 319       DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 320       DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 321       DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 322     }
 323 }
 324
 325
 326 /* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
 327    of expression EXPR from bitpack BP.  */
 328
 329 static void
 330 unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
 331 {
 332   built_in_class cl = bp_unpack_enum (bp, built_in_class, BUILT_IN_LAST);
 333   DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 334   DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 335   DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
 336   DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
 337   DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
 338   DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
 339   DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
 340   FUNCTION_DECL_DECL_TYPE (expr) = (function_decl_type) bp_unpack_value (bp, 2);
 341   DECL_SET_IS_OPERATOR_DELETE (expr, (unsigned) bp_unpack_value (bp, 1));
 342   DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 343   DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
 344   DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 345   DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
 346                         = (unsigned) bp_unpack_value (bp, 1);
 347   DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
 348   DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
 349   DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 350   DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 351   DECL_IS_REPLACEABLE_OPERATOR (expr) = (unsigned) bp_unpack_value (bp, 1);
 352   unsigned int fcode = 0;
 353   if (cl != NOT_BUILT_IN)
 354     {
 355       fcode = bp_unpack_value (bp, 32);
 356       if (cl == BUILT_IN_NORMAL && fcode >= END_BUILTINS)
 357         fatal_error (input_location,
 358                      "machine independent builtin code out of range");
 359       else if (cl == BUILT_IN_MD)
 360         {
 361           tree result = targetm.builtin_decl (fcode, true);
 362           if (!result || result == error_mark_node)
 363             fatal_error (input_location,
 364                          "target specific builtin not available");
 365         }
 366     }
 367   set_decl_built_in_function (expr, cl, fcode);
 368 }
 369
 370
 371 /* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
 372    of expression EXPR from bitpack BP.  */
 373
 374 static void
 375 unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
 376 {
 377   machine_mode mode;
 378
 379   mode = bp_unpack_machine_mode (bp);
 380   SET_TYPE_MODE (expr, mode);
 381   /* TYPE_NO_FORCE_BLK is private to stor-layout and need
 382      no streaming.  */
 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_LANG_FLAG_0 (expr) = (unsigned) bp_unpack_value (bp, 1);
 388   if (RECORD_OR_UNION_TYPE_P (expr))
 389     {
 390       TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
 391       TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 392       TYPE_CXX_ODR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 393     }
 394   else if (TREE_CODE (expr) == ARRAY_TYPE)
 395     TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
 396   if (TREE_CODE (expr) == ARRAY_TYPE || TREE_CODE (expr) == INTEGER_TYPE)
 397     TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
 398   if (AGGREGATE_TYPE_P (expr))
 399     TYPE_TYPELESS_STORAGE (expr) = (unsigned) bp_unpack_value (bp, 1);
 400   TYPE_EMPTY_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 401   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 402   SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
 403 #ifdef ACCEL_COMPILER
 404   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 405     SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
 406 #endif
 407 }
 408
 409
 410 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 411    of expression EXPR from bitpack BP.  */
 412
 413 static void
 414 unpack_ts_block_value_fields (class data_in *data_in,
 415                               struct bitpack_d *bp, tree expr)
 416 {
 417   /* BLOCK_NUMBER is recomputed.  */
 418   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 419 }
 420
 421 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 422    structure of expression EXPR from bitpack BP.  */
 423
 424 static void
 425 unpack_ts_translation_unit_decl_value_fields (class data_in *data_in,
 426                                               struct bitpack_d *bp, tree expr)
 427 {
 428   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 429   vec_safe_push (all_translation_units, expr);
 430 }
 431
 432
 433 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 434    structure of expression EXPR from bitpack BP.  */
 435
 436 static void
 437 unpack_ts_omp_clause_value_fields (class data_in *data_in,
 438                                    struct bitpack_d *bp, tree expr)
 439 {
 440   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 441   switch (OMP_CLAUSE_CODE (expr))
 442     {
 443     case OMP_CLAUSE_DEFAULT:
 444       OMP_CLAUSE_DEFAULT_KIND (expr)
 445         = bp_unpack_enum (bp, omp_clause_default_kind,
 446                           OMP_CLAUSE_DEFAULT_LAST);
 447       break;
 448     case OMP_CLAUSE_SCHEDULE:
 449       OMP_CLAUSE_SCHEDULE_KIND (expr)
 450         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 451                           OMP_CLAUSE_SCHEDULE_LAST);
 452       break;
 453     case OMP_CLAUSE_DEPEND:
 454       OMP_CLAUSE_DEPEND_KIND (expr)
 455         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 456       break;
 457     case OMP_CLAUSE_DOACROSS:
 458       OMP_CLAUSE_DOACROSS_KIND (expr)
 459         = bp_unpack_enum (bp, omp_clause_doacross_kind,
 460                           OMP_CLAUSE_DOACROSS_LAST);
 461       break;
 462     case OMP_CLAUSE_MAP:
 463       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 464                                                      GOMP_MAP_LAST));
 465       break;
 466     case OMP_CLAUSE_PROC_BIND:
 467       OMP_CLAUSE_PROC_BIND_KIND (expr)
 468         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 469                           OMP_CLAUSE_PROC_BIND_LAST);
 470       break;
 471     case OMP_CLAUSE_REDUCTION:
 472     case OMP_CLAUSE_TASK_REDUCTION:
 473     case OMP_CLAUSE_IN_REDUCTION:
 474       OMP_CLAUSE_REDUCTION_CODE (expr)
 475         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 476       break;
 477     default:
 478       break;
 479     }
 480 }
 481
 482
 483 /* Read all the language-independent bitfield values for EXPR from IB.
 484    Return the partially unpacked bitpack so the caller can unpack any other
 485    bitfield values that the writer may have written.  */
 486
 487 void
 488 streamer_read_tree_bitfields (class lto_input_block *ib,
 489                               class data_in *data_in, tree expr)
 490 {
 491   enum tree_code code;
 492   struct bitpack_d bp;
 493
 494   /* Read the bitpack of non-pointer values from IB.  */
 495   bp = streamer_read_bitpack (ib);
 496
 497   /* The first word in BP contains the code of the tree that we
 498      are about to read.  */
 499   if (streamer_debugging)
 500     {
 501       code = (enum tree_code) bp_unpack_value (&bp, 16);
 502       lto_tag_check (lto_tree_code_to_tag (code),
 503                      lto_tree_code_to_tag (TREE_CODE (expr)));
 504     }
 505   code = TREE_CODE (expr);
 506
 507   /* Note that all these functions are highly sensitive to changes in
 508      the types and sizes of each of the fields being packed.  */
 509   unpack_ts_base_value_fields (&bp, expr);
 510
 511   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 512     unpack_ts_int_cst_value_fields (&bp, expr);
 513
 514   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 515     unpack_ts_real_cst_value_fields (&bp, expr);
 516
 517   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 518     unpack_ts_fixed_cst_value_fields (&bp, expr);
 519
 520   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 521     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 522
 523   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 524     unpack_ts_decl_common_value_fields (&bp, expr);
 525
 526   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 527     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 528
 529   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 530     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 531
 532   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 533     unpack_ts_function_decl_value_fields (&bp, expr);
 534
 535   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 536     unpack_ts_type_common_value_fields (&bp, expr);
 537
 538   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 539     {
 540       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 541       if (code == MEM_REF
 542           || code == TARGET_MEM_REF)
 543         {
 544           MR_DEPENDENCE_CLIQUE (expr)
 545             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 546           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 547             MR_DEPENDENCE_BASE (expr)
 548               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 549         }
 550       else if (code == CALL_EXPR)
 551         CALL_EXPR_IFN (expr) = bp_unpack_enum (&bp, internal_fn, IFN_LAST);
 552     }
 553
 554   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 555     unpack_ts_block_value_fields (data_in, &bp, expr);
 556
 557   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 558     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 559
 560   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 561     cl_optimization_stream_in (data_in, &bp, TREE_OPTIMIZATION (expr));
 562
 563   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 564     {
 565       CLOBBER_KIND (expr)
 566         = bp_unpack_enum (&bp, clobber_kind, CLOBBER_LAST);
 567       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 568       if (length > 0)
 569         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length, true);
 570     }
 571
 572 #ifndef ACCEL_COMPILER
 573   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 574     {
 575       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 576       if (targetm.target_option.post_stream_in)
 577         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 578     }
 579 #endif
 580
 581   if (code == OMP_CLAUSE)
 582     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 583 }
 584
 585
 586 /* Materialize a new tree from input block IB using descriptors in
 587    DATA_IN.  The code for the new tree should match TAG.  Store in
 588    *IX_P the index into the reader cache where the new tree is stored.  */
 589
 590 tree
 591 streamer_alloc_tree (class lto_input_block *ib, class data_in *data_in,
 592                      enum LTO_tags tag)
 593 {
 594   enum tree_code code;
 595   tree result;
 596
 597   result = NULL_TREE;
 598
 599   code = lto_tag_to_tree_code (tag);
 600
 601   /* We should never see an SSA_NAME tree.  Only the version numbers of
 602      SSA names are ever written out.  See input_ssa_names.  */
 603   gcc_assert (code != SSA_NAME);
 604
 605   /* Instantiate a new tree using the header data.  */
 606   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 607     result = streamer_read_string_cst (data_in, ib);
 608   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 609     result = input_identifier (data_in, ib);
 610   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 611     {
 612       HOST_WIDE_INT len = streamer_read_hwi (ib);
 613       result = make_tree_vec (len);
 614     }
 615   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 616     {
 617       bitpack_d bp = streamer_read_bitpack (ib);
 618       unsigned int log2_npatterns = bp_unpack_value (&bp, 8);
 619       unsigned int nelts_per_pattern = bp_unpack_value (&bp, 8);
 620       result = make_vector (log2_npatterns, nelts_per_pattern);
 621     }
 622   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 623     {
 624       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 625       result = make_tree_binfo (len);
 626     }
 627   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 628     {
 629       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 630       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 631       result = make_int_cst (len, ext_len);
 632     }
 633   else if (code == CALL_EXPR)
 634     {
 635       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 636       return build_vl_exp (CALL_EXPR, nargs + 3);
 637     }
 638   else if (code == OMP_CLAUSE)
 639     {
 640       enum omp_clause_code subcode
 641         = (enum omp_clause_code) streamer_read_uhwi (ib);
 642       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 643     }
 644   else
 645     {
 646       /* For all other nodes, materialize the tree with a raw
 647          make_node call.  */
 648       result = make_node (code);
 649     }
 650
 651   return result;
 652 }
 653
 654
 655 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 656    block IB.  DATA_IN contains tables and descriptors for the
 657    file being read.  */
 658
 659
 660 static void
 661 lto_input_ts_common_tree_pointers (class lto_input_block *ib,
 662                                    class data_in *data_in, tree expr)
 663 {
 664   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 665     TREE_TYPE (expr) = stream_read_tree_ref (ib, data_in);
 666 }
 667
 668
 669 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 670    block IB.  DATA_IN contains tables and descriptors for the
 671    file being read.  */
 672
 673 static void
 674 lto_input_ts_vector_tree_pointers (class lto_input_block *ib,
 675                                    class data_in *data_in, tree expr)
 676 {
 677   unsigned int count = vector_cst_encoded_nelts (expr);
 678   for (unsigned int i = 0; i < count; ++i)
 679     VECTOR_CST_ENCODED_ELT (expr, i) = stream_read_tree_ref (ib, data_in);
 680 }
 681
 682
 683 /* Read all pointer fields in the TS_POLY_INT_CST structure of EXPR from
 684    input block IB.  DATA_IN contains tables and descriptors for the
 685    file being read.  */
 686
 687 static void
 688 lto_input_ts_poly_tree_pointers (class lto_input_block *ib,
 689                                  class data_in *data_in, tree expr)
 690 {
 691   for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
 692     POLY_INT_CST_COEFF (expr, i) = stream_read_tree_ref (ib, data_in);
 693 }
 694
 695
 696 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 697    block IB.  DATA_IN contains tables and descriptors for the
 698    file being read.  */
 699
 700 static void
 701 lto_input_ts_complex_tree_pointers (class lto_input_block *ib,
 702                                     class data_in *data_in, tree expr)
 703 {
 704   TREE_REALPART (expr) = stream_read_tree_ref (ib, data_in);
 705   TREE_IMAGPART (expr) = stream_read_tree_ref (ib, data_in);
 706 }
 707
 708
 709 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 710    from input block IB.  DATA_IN contains tables and descriptors for the
 711    file being read.  */
 712
 713 static void
 714 lto_input_ts_decl_minimal_tree_pointers (class lto_input_block *ib,
 715                                          class data_in *data_in, tree expr)
 716 {
 717   DECL_NAME (expr) = stream_read_tree_ref (ib, data_in);
 718   DECL_CONTEXT (expr) = stream_read_tree_ref (ib, data_in);
 719 }
 720
 721
 722 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 723    input block IB.  DATA_IN contains tables and descriptors for the
 724    file being read.  */
 725
 726 static void
 727 lto_input_ts_decl_common_tree_pointers (class lto_input_block *ib,
 728                                         class data_in *data_in, tree expr)
 729 {
 730   DECL_SIZE (expr) = stream_read_tree_ref (ib, data_in);
 731   DECL_SIZE_UNIT (expr) = stream_read_tree_ref (ib, data_in);
 732   DECL_ATTRIBUTES (expr) = stream_read_tree_ref (ib, data_in);
 733   DECL_ABSTRACT_ORIGIN (expr) = stream_read_tree_ref (ib, data_in);
 734
 735   if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 736       && DECL_HAS_VALUE_EXPR_P (expr))
 737     SET_DECL_VALUE_EXPR (expr, stream_read_tree_ref (ib, data_in));
 738
 739   if (VAR_P (expr)
 740       && DECL_HAS_DEBUG_EXPR_P (expr))
 741     {
 742       tree dexpr = stream_read_tree_ref (ib, data_in);
 743       if (dexpr)
 744         SET_DECL_DEBUG_EXPR (expr, dexpr);
 745     }
 746 }
 747
 748
 749 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 750    EXPR 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_non_common_tree_pointers (class lto_input_block *,
 755                                             class data_in *, tree)
 756 {
 757 }
 758
 759
 760 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 761    from input block IB.  DATA_IN contains tables and descriptors for the
 762    file being read.  */
 763
 764 static void
 765 lto_input_ts_decl_with_vis_tree_pointers (class lto_input_block *ib,
 766                                           class data_in *data_in, tree expr)
 767 {
 768   tree id;
 769
 770   id = stream_read_tree_ref (ib, data_in);
 771   if (id)
 772     {
 773       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 774       SET_DECL_ASSEMBLER_NAME (expr, id);
 775     }
 776 }
 777
 778
 779 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 780    input block IB.  DATA_IN contains tables and descriptors for the
 781    file being read.  */
 782
 783 static void
 784 lto_input_ts_field_decl_tree_pointers (class lto_input_block *ib,
 785                                        class data_in *data_in, tree expr)
 786 {
 787   DECL_FIELD_OFFSET (expr) = stream_read_tree_ref (ib, data_in);
 788   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree_ref (ib, data_in);
 789   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree_ref (ib, data_in);
 790   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree_ref (ib, data_in);
 791 }
 792
 793
 794 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 795    from input block IB.  DATA_IN contains tables and descriptors for the
 796    file being read.  */
 797
 798 static void
 799 lto_input_ts_function_decl_tree_pointers (class lto_input_block *ib,
 800                                           class data_in *data_in, tree expr)
 801 {
 802   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 803   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree_ref (ib, data_in);
 804 #ifndef ACCEL_COMPILER
 805   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree_ref (ib, data_in);
 806 #endif
 807   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr)
 808     = stream_read_tree_ref (ib, data_in);
 809 #ifdef ACCEL_COMPILER
 810   {
 811     tree opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr);
 812     if (opts)
 813       {
 814         struct gcc_options tmp, tmp_set;
 815         init_options_struct (&tmp, NULL);
 816         memset (&tmp_set, 0, sizeof (tmp_set));
 817         cl_optimization_restore (&tmp, &tmp_set, TREE_OPTIMIZATION (opts));
 818         finish_options (&tmp, &tmp_set, UNKNOWN_LOCATION);
 819         opts = build_optimization_node (&tmp, &tmp_set);
 820         DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = opts;
 821       }
 822   }
 823 #endif
 824 }
 825
 826
 827 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 828    input block IB.  DATA_IN contains tables and descriptors for the file
 829    being read.  */
 830
 831 static void
 832 lto_input_ts_type_common_tree_pointers (class lto_input_block *ib,
 833                                         class data_in *data_in, tree expr)
 834 {
 835   TYPE_SIZE (expr) = stream_read_tree_ref (ib, data_in);
 836   TYPE_SIZE_UNIT (expr) = stream_read_tree_ref (ib, data_in);
 837   TYPE_ATTRIBUTES (expr) = stream_read_tree_ref (ib, data_in);
 838   TYPE_NAME (expr) = stream_read_tree_ref (ib, data_in);
 839   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 840      reconstructed during fixup.  */
 841   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 842      during fixup.  */
 843   TYPE_MAIN_VARIANT (expr) = stream_read_tree_ref (ib, data_in);
 844   TYPE_CONTEXT (expr) = stream_read_tree_ref (ib, data_in);
 845   /* TYPE_CANONICAL gets re-computed during type merging.  */
 846   TYPE_CANONICAL (expr) = NULL_TREE;
 847 }
 848
 849 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 850    from input block IB.  DATA_IN contains tables and descriptors for the
 851    file being read.  */
 852
 853 static void
 854 lto_input_ts_type_non_common_tree_pointers (class lto_input_block *ib,
 855                                             class data_in *data_in,
 856                                             tree expr)
 857 {
 858   if (TREE_CODE (expr) == ARRAY_TYPE)
 859     TYPE_DOMAIN (expr) = stream_read_tree_ref (ib, data_in);
 860   else if (RECORD_OR_UNION_TYPE_P (expr))
 861     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 862   else if (TREE_CODE (expr) == FUNCTION_TYPE
 863            || TREE_CODE (expr) == METHOD_TYPE)
 864     TYPE_ARG_TYPES (expr) = stream_read_tree_ref (ib, data_in);
 865
 866   if (!POINTER_TYPE_P (expr))
 867     TYPE_MIN_VALUE_RAW (expr) = stream_read_tree_ref (ib, data_in);
 868   TYPE_MAX_VALUE_RAW (expr) = stream_read_tree_ref (ib, data_in);
 869 }
 870
 871
 872 /* Read all pointer fields in the TS_LIST structure of EXPR from input
 873    block IB.  DATA_IN contains tables and descriptors for the
 874    file being read.  */
 875
 876 static void
 877 lto_input_ts_list_tree_pointers (class lto_input_block *ib,
 878                                  class data_in *data_in, tree expr)
 879 {
 880   TREE_PURPOSE (expr) = stream_read_tree_ref (ib, data_in);
 881   TREE_VALUE (expr) = stream_read_tree_ref (ib, data_in);
 882   TREE_CHAIN (expr) = stream_read_tree_ref (ib, data_in);
 883 }
 884
 885
 886 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 887    block IB.  DATA_IN contains tables and descriptors for the
 888    file being read.  */
 889
 890 static void
 891 lto_input_ts_vec_tree_pointers (class lto_input_block *ib,
 892                                 class data_in *data_in, tree expr)
 893 {
 894   int i;
 895
 896   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 897      instantiate EXPR.  */
 898   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 899     TREE_VEC_ELT (expr, i) = stream_read_tree_ref (ib, data_in);
 900 }
 901
 902
 903 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 904    block IB.  DATA_IN contains tables and descriptors for the
 905    file being read.  */
 906
 907
 908 static void
 909 lto_input_ts_exp_tree_pointers (class lto_input_block *ib,
 910                                 class data_in *data_in, tree expr)
 911 {
 912   int i;
 913   tree block;
 914
 915   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 916     TREE_OPERAND (expr, i) = stream_read_tree_ref (ib, data_in);
 917
 918   block = stream_read_tree_ref (ib, data_in);
 919
 920   /* TODO: Block is stored in the locus information.  It may make more sense to
 921      to make it go via the location cache.  */
 922   if (block)
 923     {
 924       data_in->location_cache.apply_location_cache ();
 925       TREE_SET_BLOCK (expr, block);
 926     }
 927 }
 928
 929
 930 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 931    block IB.  DATA_IN contains tables and descriptors for the
 932    file being read.  */
 933
 934 static void
 935 lto_input_ts_block_tree_pointers (class lto_input_block *ib,
 936                                   class data_in *data_in, tree expr)
 937 {
 938   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 939
 940   BLOCK_SUPERCONTEXT (expr) = stream_read_tree_ref (ib, data_in);
 941   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree_ref (ib, data_in);
 942   /* We may end up prevailing a decl with DECL_ORIGIN (t) != t here
 943      which breaks the invariant that BLOCK_ABSTRACT_ORIGIN is the
 944      ultimate origin.  Fixup here.
 945      ???  This should get fixed with moving to DIE references.  */
 946   if (DECL_P (BLOCK_ORIGIN (expr)))
 947     BLOCK_ABSTRACT_ORIGIN (expr) = DECL_ORIGIN (BLOCK_ABSTRACT_ORIGIN (expr));
 948   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 949      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 950      dwarf2out.cc.  */
 951
 952   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 953      streaming time.  */
 954
 955   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 956      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 957      stream the child relationship explicitly.  */
 958   if (BLOCK_SUPERCONTEXT (expr)
 959       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 960     {
 961       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 962       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 963     }
 964
 965   /* The global block is rooted at the TU decl.  Hook it here to
 966      avoid the need to stream in this block during WPA time.  */
 967   else if (BLOCK_SUPERCONTEXT (expr)
 968            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 969     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 970
 971   /* The function-level block is connected at the time we read in
 972      function bodies for the same reason.  */
 973 }
 974
 975
 976 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 977    block IB.  DATA_IN contains tables and descriptors for the
 978    file being read.  */
 979
 980 static void
 981 lto_input_ts_binfo_tree_pointers (class lto_input_block *ib,
 982                                   class data_in *data_in, tree expr)
 983 {
 984   tree t;
 985
 986   /* Note that the number of slots in EXPR was read in
 987      streamer_alloc_tree when instantiating EXPR.  However, the
 988      vector is empty so we cannot rely on vec::length to know how many
 989      elements to read.  So, this list is emitted as a 0-terminated
 990      list on the writer side.  */
 991   do
 992     {
 993       t = stream_read_tree_ref (ib, data_in);
 994       if (t)
 995         BINFO_BASE_BINFOS (expr)->quick_push (t);
 996     }
 997   while (t);
 998
 999   BINFO_OFFSET (expr) = stream_read_tree_ref (ib, data_in);
1000   BINFO_VTABLE (expr) = stream_read_tree_ref (ib, data_in);
1001
1002   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX,
1003      BINFO_BASE_ACCESSES and BINFO_VPTR_INDEX; these are used by C++ FE
1004      only.  */
1005 }
1006
1007
1008 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1009    input block IB.  DATA_IN contains tables and descriptors for the
1010    file being read.  */
1011
1012 static void
1013 lto_input_ts_constructor_tree_pointers (class lto_input_block *ib,
1014                                         class data_in *data_in, tree expr)
1015 {
1016   unsigned i;
1017
1018   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1019     {
1020       constructor_elt e;
1021       e.index = stream_read_tree_ref (ib, data_in);
1022       e.value = stream_read_tree_ref (ib, data_in);
1023       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1024     }
1025 }
1026
1027
1028 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1029    input block IB.  DATA_IN contains tables and descriptors for the
1030    file being read.  */
1031
1032 static void
1033 lto_input_ts_omp_clause_tree_pointers (class lto_input_block *ib,
1034                                        class data_in *data_in, tree expr)
1035 {
1036   int i;
1037
1038   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1039     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree_ref (ib, data_in);
1040   OMP_CLAUSE_CHAIN (expr) = stream_read_tree_ref (ib, data_in);
1041 }
1042
1043
1044 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1045    contains tables and descriptors for the file being read.  */
1046
1047 void
1048 streamer_read_tree_body (class lto_input_block *ib, class data_in *data_in,
1049                          tree expr)
1050 {
1051   enum tree_code code;
1052
1053   code = TREE_CODE (expr);
1054
1055   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1056     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1057
1058   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1059     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1060
1061   if (CODE_CONTAINS_STRUCT (code, TS_POLY_INT_CST))
1062     lto_input_ts_poly_tree_pointers (ib, data_in, expr);
1063
1064   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1065     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1066
1067   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1068     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1069
1070   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1071     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1072
1073   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1074     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1075
1076   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1077     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1078
1079   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1080     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1081
1082   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1083     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1084
1085   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1086     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1087
1088   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1089     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1090
1091   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1092     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1093
1094   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1095     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1096
1097   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1098     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1099
1100   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1101     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1102
1103   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1104     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1105
1106   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1107     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1108
1109   if (code == OMP_CLAUSE)
1110     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1111 }
1112
1113
1114 /* Read an index IX from input block IB and return the tree node at
1115    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1116
1117 tree
1118 streamer_get_pickled_tree (class lto_input_block *ib, class data_in *data_in)
1119 {
1120   unsigned HOST_WIDE_INT ix;
1121   tree result;
1122   enum LTO_tags expected_tag;
1123
1124   ix = streamer_read_uhwi (ib);
1125   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1126
1127   if (streamer_debugging)
1128     {
1129       expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1130       gcc_assert (result
1131                   && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1132     }
1133
1134   return result;
1135 }