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_NO_NAMED_ARGS_STDARG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
 402   TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
 403   SET_TYPE_ALIGN (expr, bp_unpack_var_len_unsigned (bp));
 404 #ifdef ACCEL_COMPILER
 405   if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
 406     SET_TYPE_ALIGN (expr, targetm.absolute_biggest_alignment);
 407 #endif
 408 }
 409
 410
 411 /* Unpack all the non-pointer fields of the TS_BLOCK structure
 412    of expression EXPR from bitpack BP.  */
 413
 414 static void
 415 unpack_ts_block_value_fields (class data_in *data_in,
 416                               struct bitpack_d *bp, tree expr)
 417 {
 418   /* BLOCK_NUMBER is recomputed.  */
 419   stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
 420 }
 421
 422 /* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
 423    structure of expression EXPR from bitpack BP.  */
 424
 425 static void
 426 unpack_ts_translation_unit_decl_value_fields (class data_in *data_in,
 427                                               struct bitpack_d *bp, tree expr)
 428 {
 429   TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
 430   vec_safe_push (all_translation_units, expr);
 431 }
 432
 433
 434 /* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
 435    structure of expression EXPR from bitpack BP.  */
 436
 437 static void
 438 unpack_ts_omp_clause_value_fields (class data_in *data_in,
 439                                    struct bitpack_d *bp, tree expr)
 440 {
 441   stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
 442   switch (OMP_CLAUSE_CODE (expr))
 443     {
 444     case OMP_CLAUSE_DEFAULT:
 445       OMP_CLAUSE_DEFAULT_KIND (expr)
 446         = bp_unpack_enum (bp, omp_clause_default_kind,
 447                           OMP_CLAUSE_DEFAULT_LAST);
 448       break;
 449     case OMP_CLAUSE_SCHEDULE:
 450       OMP_CLAUSE_SCHEDULE_KIND (expr)
 451         = bp_unpack_enum (bp, omp_clause_schedule_kind,
 452                           OMP_CLAUSE_SCHEDULE_LAST);
 453       break;
 454     case OMP_CLAUSE_DEPEND:
 455       OMP_CLAUSE_DEPEND_KIND (expr)
 456         = bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
 457       break;
 458     case OMP_CLAUSE_DOACROSS:
 459       OMP_CLAUSE_DOACROSS_KIND (expr)
 460         = bp_unpack_enum (bp, omp_clause_doacross_kind,
 461                           OMP_CLAUSE_DOACROSS_LAST);
 462       break;
 463     case OMP_CLAUSE_MAP:
 464       OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
 465                                                      GOMP_MAP_LAST));
 466       break;
 467     case OMP_CLAUSE_PROC_BIND:
 468       OMP_CLAUSE_PROC_BIND_KIND (expr)
 469         = bp_unpack_enum (bp, omp_clause_proc_bind_kind,
 470                           OMP_CLAUSE_PROC_BIND_LAST);
 471       break;
 472     case OMP_CLAUSE_REDUCTION:
 473     case OMP_CLAUSE_TASK_REDUCTION:
 474     case OMP_CLAUSE_IN_REDUCTION:
 475       OMP_CLAUSE_REDUCTION_CODE (expr)
 476         = bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
 477       break;
 478     default:
 479       break;
 480     }
 481 }
 482
 483
 484 /* Read all the language-independent bitfield values for EXPR from IB.
 485    Return the partially unpacked bitpack so the caller can unpack any other
 486    bitfield values that the writer may have written.  */
 487
 488 void
 489 streamer_read_tree_bitfields (class lto_input_block *ib,
 490                               class data_in *data_in, tree expr)
 491 {
 492   enum tree_code code;
 493   struct bitpack_d bp;
 494
 495   /* Read the bitpack of non-pointer values from IB.  */
 496   bp = streamer_read_bitpack (ib);
 497
 498   /* The first word in BP contains the code of the tree that we
 499      are about to read.  */
 500   if (streamer_debugging)
 501     {
 502       code = (enum tree_code) bp_unpack_value (&bp, 16);
 503       lto_tag_check (lto_tree_code_to_tag (code),
 504                      lto_tree_code_to_tag (TREE_CODE (expr)));
 505     }
 506   code = TREE_CODE (expr);
 507
 508   /* Note that all these functions are highly sensitive to changes in
 509      the types and sizes of each of the fields being packed.  */
 510   unpack_ts_base_value_fields (&bp, expr);
 511
 512   if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 513     unpack_ts_int_cst_value_fields (&bp, expr);
 514
 515   if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
 516     unpack_ts_real_cst_value_fields (&bp, expr);
 517
 518   if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
 519     unpack_ts_fixed_cst_value_fields (&bp, expr);
 520
 521   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
 522     stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
 523
 524   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
 525     unpack_ts_decl_common_value_fields (&bp, expr);
 526
 527   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
 528     unpack_ts_decl_wrtl_value_fields (&bp, expr);
 529
 530   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
 531     unpack_ts_decl_with_vis_value_fields (&bp, expr);
 532
 533   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
 534     unpack_ts_function_decl_value_fields (&bp, expr);
 535
 536   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
 537     unpack_ts_type_common_value_fields (&bp, expr);
 538
 539   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
 540     {
 541       stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
 542       if (code == MEM_REF
 543           || code == TARGET_MEM_REF)
 544         {
 545           MR_DEPENDENCE_CLIQUE (expr)
 546             = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 547           if (MR_DEPENDENCE_CLIQUE (expr) != 0)
 548             MR_DEPENDENCE_BASE (expr)
 549               = (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
 550         }
 551       else if (code == CALL_EXPR)
 552         CALL_EXPR_IFN (expr) = bp_unpack_enum (&bp, internal_fn, IFN_LAST);
 553     }
 554
 555   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
 556     unpack_ts_block_value_fields (data_in, &bp, expr);
 557
 558   if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
 559     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 560
 561   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
 562     cl_optimization_stream_in (data_in, &bp, TREE_OPTIMIZATION (expr));
 563
 564   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
 565     {
 566       CLOBBER_KIND (expr)
 567         = bp_unpack_enum (&bp, clobber_kind, CLOBBER_LAST);
 568       unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
 569       if (length > 0)
 570         vec_safe_grow (CONSTRUCTOR_ELTS (expr), length, true);
 571     }
 572
 573 #ifndef ACCEL_COMPILER
 574   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
 575     {
 576       cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
 577       if (targetm.target_option.post_stream_in)
 578         targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
 579     }
 580 #endif
 581
 582   if (code == OMP_CLAUSE)
 583     unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
 584 }
 585
 586
 587 /* Materialize a new tree from input block IB using descriptors in
 588    DATA_IN.  The code for the new tree should match TAG.  Store in
 589    *IX_P the index into the reader cache where the new tree is stored.  */
 590
 591 tree
 592 streamer_alloc_tree (class lto_input_block *ib, class data_in *data_in,
 593                      enum LTO_tags tag)
 594 {
 595   enum tree_code code;
 596   tree result;
 597
 598   result = NULL_TREE;
 599
 600   code = lto_tag_to_tree_code (tag);
 601
 602   /* We should never see an SSA_NAME tree.  Only the version numbers of
 603      SSA names are ever written out.  See input_ssa_names.  */
 604   gcc_assert (code != SSA_NAME);
 605
 606   /* Instantiate a new tree using the header data.  */
 607   if (CODE_CONTAINS_STRUCT (code, TS_STRING))
 608     result = streamer_read_string_cst (data_in, ib);
 609   else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
 610     result = input_identifier (data_in, ib);
 611   else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
 612     {
 613       HOST_WIDE_INT len = streamer_read_hwi (ib);
 614       result = make_tree_vec (len);
 615     }
 616   else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
 617     {
 618       bitpack_d bp = streamer_read_bitpack (ib);
 619       unsigned int log2_npatterns = bp_unpack_value (&bp, 8);
 620       unsigned int nelts_per_pattern = bp_unpack_value (&bp, 8);
 621       result = make_vector (log2_npatterns, nelts_per_pattern);
 622     }
 623   else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
 624     {
 625       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 626       result = make_tree_binfo (len);
 627     }
 628   else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
 629     {
 630       unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
 631       unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
 632       result = make_int_cst (len, ext_len);
 633     }
 634   else if (code == CALL_EXPR)
 635     {
 636       unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
 637       return build_vl_exp (CALL_EXPR, nargs + 3);
 638     }
 639   else if (code == OMP_CLAUSE)
 640     {
 641       enum omp_clause_code subcode
 642         = (enum omp_clause_code) streamer_read_uhwi (ib);
 643       return build_omp_clause (UNKNOWN_LOCATION, subcode);
 644     }
 645   else
 646     {
 647       /* For all other nodes, materialize the tree with a raw
 648          make_node call.  */
 649       result = make_node (code);
 650     }
 651
 652   return result;
 653 }
 654
 655
 656 /* Read all pointer fields in the TS_COMMON structure of EXPR from input
 657    block IB.  DATA_IN contains tables and descriptors for the
 658    file being read.  */
 659
 660
 661 static void
 662 lto_input_ts_common_tree_pointers (class lto_input_block *ib,
 663                                    class data_in *data_in, tree expr)
 664 {
 665   if (TREE_CODE (expr) != IDENTIFIER_NODE)
 666     TREE_TYPE (expr) = stream_read_tree_ref (ib, data_in);
 667 }
 668
 669
 670 /* Read all pointer fields in the TS_VECTOR structure of EXPR from input
 671    block IB.  DATA_IN contains tables and descriptors for the
 672    file being read.  */
 673
 674 static void
 675 lto_input_ts_vector_tree_pointers (class lto_input_block *ib,
 676                                    class data_in *data_in, tree expr)
 677 {
 678   unsigned int count = vector_cst_encoded_nelts (expr);
 679   for (unsigned int i = 0; i < count; ++i)
 680     VECTOR_CST_ENCODED_ELT (expr, i) = stream_read_tree_ref (ib, data_in);
 681 }
 682
 683
 684 /* Read all pointer fields in the TS_POLY_INT_CST structure of EXPR from
 685    input block IB.  DATA_IN contains tables and descriptors for the
 686    file being read.  */
 687
 688 static void
 689 lto_input_ts_poly_tree_pointers (class lto_input_block *ib,
 690                                  class data_in *data_in, tree expr)
 691 {
 692   for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
 693     POLY_INT_CST_COEFF (expr, i) = stream_read_tree_ref (ib, data_in);
 694 }
 695
 696
 697 /* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
 698    block IB.  DATA_IN contains tables and descriptors for the
 699    file being read.  */
 700
 701 static void
 702 lto_input_ts_complex_tree_pointers (class lto_input_block *ib,
 703                                     class data_in *data_in, tree expr)
 704 {
 705   TREE_REALPART (expr) = stream_read_tree_ref (ib, data_in);
 706   TREE_IMAGPART (expr) = stream_read_tree_ref (ib, data_in);
 707 }
 708
 709
 710 /* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
 711    from input block IB.  DATA_IN contains tables and descriptors for the
 712    file being read.  */
 713
 714 static void
 715 lto_input_ts_decl_minimal_tree_pointers (class lto_input_block *ib,
 716                                          class data_in *data_in, tree expr)
 717 {
 718   DECL_NAME (expr) = stream_read_tree_ref (ib, data_in);
 719   DECL_CONTEXT (expr) = stream_read_tree_ref (ib, data_in);
 720 }
 721
 722
 723 /* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
 724    input block IB.  DATA_IN contains tables and descriptors for the
 725    file being read.  */
 726
 727 static void
 728 lto_input_ts_decl_common_tree_pointers (class lto_input_block *ib,
 729                                         class data_in *data_in, tree expr)
 730 {
 731   DECL_SIZE (expr) = stream_read_tree_ref (ib, data_in);
 732   DECL_SIZE_UNIT (expr) = stream_read_tree_ref (ib, data_in);
 733   DECL_ATTRIBUTES (expr) = stream_read_tree_ref (ib, data_in);
 734   DECL_ABSTRACT_ORIGIN (expr) = stream_read_tree_ref (ib, data_in);
 735
 736   if ((VAR_P (expr) || TREE_CODE (expr) == PARM_DECL)
 737       && DECL_HAS_VALUE_EXPR_P (expr))
 738     SET_DECL_VALUE_EXPR (expr, stream_read_tree_ref (ib, data_in));
 739
 740   if (VAR_P (expr)
 741       && DECL_HAS_DEBUG_EXPR_P (expr))
 742     {
 743       tree dexpr = stream_read_tree_ref (ib, data_in);
 744       if (dexpr)
 745         SET_DECL_DEBUG_EXPR (expr, dexpr);
 746     }
 747 }
 748
 749
 750 /* Read all pointer fields in the TS_DECL_NON_COMMON structure of
 751    EXPR 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_non_common_tree_pointers (class lto_input_block *,
 756                                             class data_in *, tree)
 757 {
 758 }
 759
 760
 761 /* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
 762    from input block IB.  DATA_IN contains tables and descriptors for the
 763    file being read.  */
 764
 765 static void
 766 lto_input_ts_decl_with_vis_tree_pointers (class lto_input_block *ib,
 767                                           class data_in *data_in, tree expr)
 768 {
 769   tree id;
 770
 771   id = stream_read_tree_ref (ib, data_in);
 772   if (id)
 773     {
 774       gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
 775       SET_DECL_ASSEMBLER_NAME (expr, id);
 776     }
 777 }
 778
 779
 780 /* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
 781    input block IB.  DATA_IN contains tables and descriptors for the
 782    file being read.  */
 783
 784 static void
 785 lto_input_ts_field_decl_tree_pointers (class lto_input_block *ib,
 786                                        class data_in *data_in, tree expr)
 787 {
 788   DECL_FIELD_OFFSET (expr) = stream_read_tree_ref (ib, data_in);
 789   DECL_BIT_FIELD_TYPE (expr) = stream_read_tree_ref (ib, data_in);
 790   DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree_ref (ib, data_in);
 791   DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree_ref (ib, data_in);
 792 }
 793
 794
 795 /* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
 796    from input block IB.  DATA_IN contains tables and descriptors for the
 797    file being read.  */
 798
 799 static void
 800 lto_input_ts_function_decl_tree_pointers (class lto_input_block *ib,
 801                                           class data_in *data_in, tree expr)
 802 {
 803   /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body.  */
 804   DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree_ref (ib, data_in);
 805 #ifndef ACCEL_COMPILER
 806   DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree_ref (ib, data_in);
 807 #endif
 808   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr)
 809     = stream_read_tree_ref (ib, data_in);
 810 #ifdef ACCEL_COMPILER
 811   {
 812     tree opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr);
 813     if (opts)
 814       {
 815         struct gcc_options tmp, tmp_set;
 816         init_options_struct (&tmp, NULL);
 817         memset (&tmp_set, 0, sizeof (tmp_set));
 818         cl_optimization_restore (&tmp, &tmp_set, TREE_OPTIMIZATION (opts));
 819         finish_options (&tmp, &tmp_set, UNKNOWN_LOCATION);
 820         opts = build_optimization_node (&tmp, &tmp_set);
 821         DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = opts;
 822       }
 823   }
 824 #endif
 825 }
 826
 827
 828 /* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
 829    input block IB.  DATA_IN contains tables and descriptors for the file
 830    being read.  */
 831
 832 static void
 833 lto_input_ts_type_common_tree_pointers (class lto_input_block *ib,
 834                                         class data_in *data_in, tree expr)
 835 {
 836   TYPE_SIZE (expr) = stream_read_tree_ref (ib, data_in);
 837   TYPE_SIZE_UNIT (expr) = stream_read_tree_ref (ib, data_in);
 838   TYPE_ATTRIBUTES (expr) = stream_read_tree_ref (ib, data_in);
 839   TYPE_NAME (expr) = stream_read_tree_ref (ib, data_in);
 840   /* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
 841      reconstructed during fixup.  */
 842   /* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
 843      during fixup.  */
 844   TYPE_MAIN_VARIANT (expr) = stream_read_tree_ref (ib, data_in);
 845   TYPE_CONTEXT (expr) = stream_read_tree_ref (ib, data_in);
 846   /* TYPE_CANONICAL gets re-computed during type merging.  */
 847   TYPE_CANONICAL (expr) = NULL_TREE;
 848 }
 849
 850 /* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
 851    from input block IB.  DATA_IN contains tables and descriptors for the
 852    file being read.  */
 853
 854 static void
 855 lto_input_ts_type_non_common_tree_pointers (class lto_input_block *ib,
 856                                             class data_in *data_in,
 857                                             tree expr)
 858 {
 859   if (TREE_CODE (expr) == ARRAY_TYPE)
 860     TYPE_DOMAIN (expr) = stream_read_tree_ref (ib, data_in);
 861   else if (RECORD_OR_UNION_TYPE_P (expr))
 862     TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
 863   else if (TREE_CODE (expr) == FUNCTION_TYPE
 864            || TREE_CODE (expr) == METHOD_TYPE)
 865     TYPE_ARG_TYPES (expr) = stream_read_tree_ref (ib, data_in);
 866
 867   if (!POINTER_TYPE_P (expr))
 868     TYPE_MIN_VALUE_RAW (expr) = stream_read_tree_ref (ib, data_in);
 869   TYPE_MAX_VALUE_RAW (expr) = stream_read_tree_ref (ib, data_in);
 870 }
 871
 872
 873 /* Read all pointer fields in the TS_LIST 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_list_tree_pointers (class lto_input_block *ib,
 879                                  class data_in *data_in, tree expr)
 880 {
 881   TREE_PURPOSE (expr) = stream_read_tree_ref (ib, data_in);
 882   TREE_VALUE (expr) = stream_read_tree_ref (ib, data_in);
 883   TREE_CHAIN (expr) = stream_read_tree_ref (ib, data_in);
 884 }
 885
 886
 887 /* Read all pointer fields in the TS_VEC structure of EXPR from input
 888    block IB.  DATA_IN contains tables and descriptors for the
 889    file being read.  */
 890
 891 static void
 892 lto_input_ts_vec_tree_pointers (class lto_input_block *ib,
 893                                 class data_in *data_in, tree expr)
 894 {
 895   int i;
 896
 897   /* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
 898      instantiate EXPR.  */
 899   for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
 900     TREE_VEC_ELT (expr, i) = stream_read_tree_ref (ib, data_in);
 901 }
 902
 903
 904 /* Read all pointer fields in the TS_EXP structure of EXPR from input
 905    block IB.  DATA_IN contains tables and descriptors for the
 906    file being read.  */
 907
 908
 909 static void
 910 lto_input_ts_exp_tree_pointers (class lto_input_block *ib,
 911                                 class data_in *data_in, tree expr)
 912 {
 913   int i;
 914   tree block;
 915
 916   for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
 917     TREE_OPERAND (expr, i) = stream_read_tree_ref (ib, data_in);
 918
 919   block = stream_read_tree_ref (ib, data_in);
 920
 921   /* TODO: Block is stored in the locus information.  It may make more sense to
 922      to make it go via the location cache.  */
 923   if (block)
 924     {
 925       data_in->location_cache.apply_location_cache ();
 926       TREE_SET_BLOCK (expr, block);
 927     }
 928 }
 929
 930
 931 /* Read all pointer fields in the TS_BLOCK structure of EXPR from input
 932    block IB.  DATA_IN contains tables and descriptors for the
 933    file being read.  */
 934
 935 static void
 936 lto_input_ts_block_tree_pointers (class lto_input_block *ib,
 937                                   class data_in *data_in, tree expr)
 938 {
 939   BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
 940
 941   BLOCK_SUPERCONTEXT (expr) = stream_read_tree_ref (ib, data_in);
 942   BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree_ref (ib, data_in);
 943   /* We may end up prevailing a decl with DECL_ORIGIN (t) != t here
 944      which breaks the invariant that BLOCK_ABSTRACT_ORIGIN is the
 945      ultimate origin.  Fixup here.
 946      ???  This should get fixed with moving to DIE references.  */
 947   if (DECL_P (BLOCK_ORIGIN (expr)))
 948     BLOCK_ABSTRACT_ORIGIN (expr) = DECL_ORIGIN (BLOCK_ABSTRACT_ORIGIN (expr));
 949   /* Do not stream BLOCK_NONLOCALIZED_VARS.  We cannot handle debug information
 950      for early inlined BLOCKs so drop it on the floor instead of ICEing in
 951      dwarf2out.cc.  */
 952
 953   /* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
 954      streaming time.  */
 955
 956   /* We re-compute BLOCK_SUBBLOCKS of our parent here instead
 957      of streaming it.  For non-BLOCK BLOCK_SUPERCONTEXTs we still
 958      stream the child relationship explicitly.  */
 959   if (BLOCK_SUPERCONTEXT (expr)
 960       && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
 961     {
 962       BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
 963       BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
 964     }
 965
 966   /* The global block is rooted at the TU decl.  Hook it here to
 967      avoid the need to stream in this block during WPA time.  */
 968   else if (BLOCK_SUPERCONTEXT (expr)
 969            && TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
 970     DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
 971
 972   /* The function-level block is connected at the time we read in
 973      function bodies for the same reason.  */
 974 }
 975
 976
 977 /* Read all pointer fields in the TS_BINFO structure of EXPR from input
 978    block IB.  DATA_IN contains tables and descriptors for the
 979    file being read.  */
 980
 981 static void
 982 lto_input_ts_binfo_tree_pointers (class lto_input_block *ib,
 983                                   class data_in *data_in, tree expr)
 984 {
 985   tree t;
 986
 987   /* Note that the number of slots in EXPR was read in
 988      streamer_alloc_tree when instantiating EXPR.  However, the
 989      vector is empty so we cannot rely on vec::length to know how many
 990      elements to read.  So, this list is emitted as a 0-terminated
 991      list on the writer side.  */
 992   do
 993     {
 994       t = stream_read_tree_ref (ib, data_in);
 995       if (t)
 996         BINFO_BASE_BINFOS (expr)->quick_push (t);
 997     }
 998   while (t);
 999
1000   BINFO_OFFSET (expr) = stream_read_tree_ref (ib, data_in);
1001   BINFO_VTABLE (expr) = stream_read_tree_ref (ib, data_in);
1002
1003   /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX,
1004      BINFO_BASE_ACCESSES and BINFO_VPTR_INDEX; these are used by C++ FE
1005      only.  */
1006 }
1007
1008
1009 /* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
1010    input block IB.  DATA_IN contains tables and descriptors for the
1011    file being read.  */
1012
1013 static void
1014 lto_input_ts_constructor_tree_pointers (class lto_input_block *ib,
1015                                         class data_in *data_in, tree expr)
1016 {
1017   unsigned i;
1018
1019   for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
1020     {
1021       constructor_elt e;
1022       e.index = stream_read_tree_ref (ib, data_in);
1023       e.value = stream_read_tree_ref (ib, data_in);
1024       (*CONSTRUCTOR_ELTS (expr))[i] = e;
1025     }
1026 }
1027
1028
1029 /* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
1030    input block IB.  DATA_IN contains tables and descriptors for the
1031    file being read.  */
1032
1033 static void
1034 lto_input_ts_omp_clause_tree_pointers (class lto_input_block *ib,
1035                                        class data_in *data_in, tree expr)
1036 {
1037   int i;
1038
1039   for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
1040     OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree_ref (ib, data_in);
1041   OMP_CLAUSE_CHAIN (expr) = stream_read_tree_ref (ib, data_in);
1042 }
1043
1044
1045 /* Read all pointer fields in EXPR from input block IB.  DATA_IN
1046    contains tables and descriptors for the file being read.  */
1047
1048 void
1049 streamer_read_tree_body (class lto_input_block *ib, class data_in *data_in,
1050                          tree expr)
1051 {
1052   enum tree_code code;
1053
1054   code = TREE_CODE (expr);
1055
1056   if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
1057     lto_input_ts_common_tree_pointers (ib, data_in, expr);
1058
1059   if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
1060     lto_input_ts_vector_tree_pointers (ib, data_in, expr);
1061
1062   if (CODE_CONTAINS_STRUCT (code, TS_POLY_INT_CST))
1063     lto_input_ts_poly_tree_pointers (ib, data_in, expr);
1064
1065   if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
1066     lto_input_ts_complex_tree_pointers (ib, data_in, expr);
1067
1068   if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
1069     lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
1070
1071   if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
1072     lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
1073
1074   if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
1075     lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
1076
1077   if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
1078     lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
1079
1080   if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
1081     lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
1082
1083   if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
1084     lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
1085
1086   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
1087     lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
1088
1089   if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
1090     lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
1091
1092   if (CODE_CONTAINS_STRUCT (code, TS_LIST))
1093     lto_input_ts_list_tree_pointers (ib, data_in, expr);
1094
1095   if (CODE_CONTAINS_STRUCT (code, TS_VEC))
1096     lto_input_ts_vec_tree_pointers (ib, data_in, expr);
1097
1098   if (CODE_CONTAINS_STRUCT (code, TS_EXP))
1099     lto_input_ts_exp_tree_pointers (ib, data_in, expr);
1100
1101   if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
1102     lto_input_ts_block_tree_pointers (ib, data_in, expr);
1103
1104   if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
1105     lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
1106
1107   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
1108     lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
1109
1110   if (code == OMP_CLAUSE)
1111     lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
1112 }
1113
1114
1115 /* Read an index IX from input block IB and return the tree node at
1116    DATA_IN->FILE_DATA->GLOBALS_INDEX[IX].  */
1117
1118 tree
1119 streamer_get_pickled_tree (class lto_input_block *ib, class data_in *data_in)
1120 {
1121   unsigned HOST_WIDE_INT ix;
1122   tree result;
1123   enum LTO_tags expected_tag;
1124
1125   ix = streamer_read_uhwi (ib);
1126   result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
1127
1128   if (streamer_debugging)
1129     {
1130       expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
1131       gcc_assert (result
1132                   && TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
1133     }
1134
1135   return result;
1136 }