blob: 6d84efbffe97d6ad5dc802bab71436413ce4fd2e [file] [log] [blame]
/* Routines for reading trees from a file stream.
Copyright (C) 2011-2015 Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@google.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "diagnostic.h"
#include "hash-set.h"
#include "machmode.h"
#include "vec.h"
#include "double-int.h"
#include "input.h"
#include "alias.h"
#include "symtab.h"
#include "options.h"
#include "wide-int.h"
#include "inchash.h"
#include "real.h"
#include "fixed-value.h"
#include "tree.h"
#include "fold-const.h"
#include "stringpool.h"
#include "predict.h"
#include "tm.h"
#include "hard-reg-set.h"
#include "input.h"
#include "function.h"
#include "basic-block.h"
#include "tree-ssa-alias.h"
#include "internal-fn.h"
#include "gimple-expr.h"
#include "is-a.h"
#include "gimple.h"
#include "hash-map.h"
#include "plugin-api.h"
#include "ipa-ref.h"
#include "cgraph.h"
#include "tree-streamer.h"
#include "data-streamer.h"
#include "streamer-hooks.h"
#include "lto-streamer.h"
#include "builtins.h"
#include "ipa-chkp.h"
#include "gomp-constants.h"
/* Read a STRING_CST from the string table in DATA_IN using input
block IB. */
tree
streamer_read_string_cst (struct data_in *data_in, struct lto_input_block *ib)
{
unsigned int len;
const char * ptr;
ptr = streamer_read_indexed_string (data_in, ib, &len);
if (!ptr)
return NULL;
return build_string (len, ptr);
}
/* Read an IDENTIFIER from the string table in DATA_IN using input
block IB. */
static tree
input_identifier (struct data_in *data_in, struct lto_input_block *ib)
{
unsigned int len;
const char *ptr;
ptr = streamer_read_indexed_string (data_in, ib, &len);
if (!ptr)
return NULL;
return get_identifier_with_length (ptr, len);
}
/* Read a chain of tree nodes from input block IB. DATA_IN contains
tables and descriptors for the file being read. */
tree
streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
{
tree first, prev, curr;
/* The chain is written as NULL terminated list of trees. */
first = prev = NULL_TREE;
do
{
curr = stream_read_tree (ib, data_in);
if (prev)
TREE_CHAIN (prev) = curr;
else
first = curr;
prev = curr;
}
while (curr);
return first;
}
/* Unpack all the non-pointer fields of the TS_BASE structure of
expression EXPR from bitpack BP. */
static inline void
unpack_ts_base_value_fields (struct bitpack_d *bp, tree expr)
{
/* Note that the code for EXPR has already been unpacked to create EXPR in
streamer_alloc_tree. */
if (!TYPE_P (expr))
{
TREE_SIDE_EFFECTS (expr) = (unsigned) bp_unpack_value (bp, 1);
TREE_CONSTANT (expr) = (unsigned) bp_unpack_value (bp, 1);
TREE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
/* TREE_PUBLIC is used on types to indicate that the type
has a TYPE_CACHED_VALUES vector. This is not streamed out,
so we skip it here. */
TREE_PUBLIC (expr) = (unsigned) bp_unpack_value (bp, 1);
}
else
bp_unpack_value (bp, 4);
TREE_ADDRESSABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
TREE_THIS_VOLATILE (expr) = (unsigned) bp_unpack_value (bp, 1);
if (DECL_P (expr))
DECL_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
else if (TYPE_P (expr))
TYPE_UNSIGNED (expr) = (unsigned) bp_unpack_value (bp, 1);
else
bp_unpack_value (bp, 1);
TREE_ASM_WRITTEN (expr) = (unsigned) bp_unpack_value (bp, 1);
if (TYPE_P (expr))
TYPE_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
else
TREE_NO_WARNING (expr) = (unsigned) bp_unpack_value (bp, 1);
TREE_NOTHROW (expr) = (unsigned) bp_unpack_value (bp, 1);
TREE_STATIC (expr) = (unsigned) bp_unpack_value (bp, 1);
if (TREE_CODE (expr) != TREE_BINFO)
TREE_PRIVATE (expr) = (unsigned) bp_unpack_value (bp, 1);
else
bp_unpack_value (bp, 1);
TREE_PROTECTED (expr) = (unsigned) bp_unpack_value (bp, 1);
TREE_DEPRECATED (expr) = (unsigned) bp_unpack_value (bp, 1);
if (TYPE_P (expr))
{
TYPE_SATURATING (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_ADDR_SPACE (expr) = (unsigned) bp_unpack_value (bp, 8);
}
else if (TREE_CODE (expr) == SSA_NAME)
{
SSA_NAME_IS_DEFAULT_DEF (expr) = (unsigned) bp_unpack_value (bp, 1);
bp_unpack_value (bp, 8);
}
else
bp_unpack_value (bp, 9);
}
/* Unpack all the non-pointer fields of the TS_INT_CST structure of
expression EXPR from bitpack BP. */
static void
unpack_ts_int_cst_value_fields (struct bitpack_d *bp, tree expr)
{
int i;
for (i = 0; i < TREE_INT_CST_EXT_NUNITS (expr); i++)
TREE_INT_CST_ELT (expr, i) = bp_unpack_var_len_int (bp);
}
/* Unpack all the non-pointer fields of the TS_REAL_CST structure of
expression EXPR from bitpack BP. */
static void
unpack_ts_real_cst_value_fields (struct bitpack_d *bp, tree expr)
{
unsigned i;
REAL_VALUE_TYPE r;
REAL_VALUE_TYPE *rp;
/* Clear all bits of the real value type so that we can later do
bitwise comparisons to see if two values are the same. */
memset (&r, 0, sizeof r);
r.cl = (unsigned) bp_unpack_value (bp, 2);
r.decimal = (unsigned) bp_unpack_value (bp, 1);
r.sign = (unsigned) bp_unpack_value (bp, 1);
r.signalling = (unsigned) bp_unpack_value (bp, 1);
r.canonical = (unsigned) bp_unpack_value (bp, 1);
r.uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
for (i = 0; i < SIGSZ; i++)
r.sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
rp = ggc_alloc<real_value> ();
memcpy (rp, &r, sizeof (REAL_VALUE_TYPE));
TREE_REAL_CST_PTR (expr) = rp;
}
/* Unpack all the non-pointer fields of the TS_FIXED_CST structure of
expression EXPR from bitpack BP. */
static void
unpack_ts_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
{
FIXED_VALUE_TYPE *fp = ggc_alloc<fixed_value> ();
fp->mode = bp_unpack_machine_mode (bp);
fp->data.low = bp_unpack_var_len_int (bp);
fp->data.high = bp_unpack_var_len_int (bp);
TREE_FIXED_CST_PTR (expr) = fp;
}
/* Unpack all the non-pointer fields of the TS_DECL_COMMON structure
of expression EXPR from bitpack BP. */
static void
unpack_ts_decl_common_value_fields (struct bitpack_d *bp, tree expr)
{
DECL_MODE (expr) = bp_unpack_machine_mode (bp);
DECL_NONLOCAL (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_VIRTUAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IGNORED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_ABSTRACT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_ARTIFICIAL (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_PRESERVE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_EXTERNAL (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_GIMPLE_REG_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_ALIGN (expr) = (unsigned) bp_unpack_var_len_unsigned (bp);
#ifdef ACCEL_COMPILER
if (DECL_ALIGN (expr) > targetm.absolute_biggest_alignment)
DECL_ALIGN (expr) = targetm.absolute_biggest_alignment;
#endif
if (TREE_CODE (expr) == LABEL_DECL)
{
EH_LANDING_PAD_NR (expr) = (int) bp_unpack_var_len_unsigned (bp);
/* Always assume an initial value of -1 for LABEL_DECL_UID to
force gimple_set_bb to recreate label_to_block_map. */
LABEL_DECL_UID (expr) = -1;
}
if (TREE_CODE (expr) == FIELD_DECL)
{
DECL_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_NONADDRESSABLE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
expr->decl_common.off_align = bp_unpack_value (bp, 8);
}
if (TREE_CODE (expr) == VAR_DECL)
{
DECL_HAS_DEBUG_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_NONLOCAL_FRAME (expr) = (unsigned) bp_unpack_value (bp, 1);
}
if (TREE_CODE (expr) == RESULT_DECL
|| TREE_CODE (expr) == PARM_DECL
|| TREE_CODE (expr) == VAR_DECL)
{
DECL_BY_REFERENCE (expr) = (unsigned) bp_unpack_value (bp, 1);
if (TREE_CODE (expr) == VAR_DECL
|| TREE_CODE (expr) == PARM_DECL)
DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
}
}
/* Unpack all the non-pointer fields of the TS_DECL_WRTL structure
of expression EXPR from bitpack BP. */
static void
unpack_ts_decl_wrtl_value_fields (struct bitpack_d *bp, tree expr)
{
DECL_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
}
/* Unpack all the non-pointer fields of the TS_DECL_WITH_VIS structure
of expression EXPR from bitpack BP. */
static void
unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
{
DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp, 2);
DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp, 1);
if (TREE_CODE (expr) == VAR_DECL)
{
DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
}
if (TREE_CODE (expr) == FUNCTION_DECL)
{
DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
}
}
/* Unpack all the non-pointer fields of the TS_FUNCTION_DECL structure
of expression EXPR from bitpack BP. */
static void
unpack_ts_function_decl_value_fields (struct bitpack_d *bp, tree expr)
{
DECL_BUILT_IN_CLASS (expr) = bp_unpack_enum (bp, built_in_class,
BUILT_IN_LAST);
DECL_STATIC_CONSTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_STATIC_DESTRUCTOR (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_UNINLINABLE (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_POSSIBLY_INLINED (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IS_NOVOPS (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IS_RETURNS_TWICE (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IS_MALLOC (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IS_OPERATOR_NEW (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_DECLARED_INLINE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_STATIC_CHAIN (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_NO_INLINE_WARNING_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (expr)
= (unsigned) bp_unpack_value (bp, 1);
DECL_NO_LIMIT_STACK (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_DISREGARD_INLINE_LIMITS (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_LOOPING_CONST_OR_PURE_P (expr) = (unsigned) bp_unpack_value (bp, 1);
if (DECL_BUILT_IN_CLASS (expr) != NOT_BUILT_IN)
{
DECL_FUNCTION_CODE (expr) = (enum built_in_function) bp_unpack_value (bp,
12);
if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_NORMAL
&& DECL_FUNCTION_CODE (expr) >= END_BUILTINS)
fatal_error (input_location,
"machine independent builtin code out of range");
else if (DECL_BUILT_IN_CLASS (expr) == BUILT_IN_MD)
{
tree result = targetm.builtin_decl (DECL_FUNCTION_CODE (expr), true);
if (!result || result == error_mark_node)
fatal_error (input_location,
"target specific builtin not available");
}
}
}
/* Unpack all the non-pointer fields of the TS_TYPE_COMMON structure
of expression EXPR from bitpack BP. */
static void
unpack_ts_type_common_value_fields (struct bitpack_d *bp, tree expr)
{
machine_mode mode;
mode = bp_unpack_machine_mode (bp);
SET_TYPE_MODE (expr, mode);
TYPE_STRING_FLAG (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_NO_FORCE_BLK (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_NEEDS_CONSTRUCTING (expr) = (unsigned) bp_unpack_value (bp, 1);
if (RECORD_OR_UNION_TYPE_P (expr))
{
TYPE_TRANSPARENT_AGGR (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
}
else if (TREE_CODE (expr) == ARRAY_TYPE)
TYPE_NONALIASED_COMPONENT (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_PACKED (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_RESTRICT (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_USER_ALIGN (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_READONLY (expr) = (unsigned) bp_unpack_value (bp, 1);
TYPE_PRECISION (expr) = bp_unpack_var_len_unsigned (bp);
TYPE_ALIGN (expr) = bp_unpack_var_len_unsigned (bp);
#ifdef ACCEL_COMPILER
if (TYPE_ALIGN (expr) > targetm.absolute_biggest_alignment)
TYPE_ALIGN (expr) = targetm.absolute_biggest_alignment;
#endif
TYPE_ALIAS_SET (expr) = bp_unpack_var_len_int (bp);
}
/* Unpack all the non-pointer fields of the TS_BLOCK structure
of expression EXPR from bitpack BP. */
static void
unpack_ts_block_value_fields (struct data_in *data_in,
struct bitpack_d *bp, tree expr)
{
BLOCK_ABSTRACT (expr) = (unsigned) bp_unpack_value (bp, 1);
/* BLOCK_NUMBER is recomputed. */
stream_input_location (&BLOCK_SOURCE_LOCATION (expr), bp, data_in);
}
/* Unpack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL
structure of expression EXPR from bitpack BP. */
static void
unpack_ts_translation_unit_decl_value_fields (struct data_in *data_in,
struct bitpack_d *bp, tree expr)
{
TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (bp_unpack_string (data_in, bp));
vec_safe_push (all_translation_units, expr);
}
/* Unpack all the non-pointer fields of the TS_OMP_CLAUSE
structure of expression EXPR from bitpack BP. */
static void
unpack_ts_omp_clause_value_fields (struct data_in *data_in,
struct bitpack_d *bp, tree expr)
{
stream_input_location (&OMP_CLAUSE_LOCATION (expr), bp, data_in);
switch (OMP_CLAUSE_CODE (expr))
{
case OMP_CLAUSE_DEFAULT:
OMP_CLAUSE_DEFAULT_KIND (expr)
= bp_unpack_enum (bp, omp_clause_default_kind,
OMP_CLAUSE_DEFAULT_LAST);
break;
case OMP_CLAUSE_SCHEDULE:
OMP_CLAUSE_SCHEDULE_KIND (expr)
= bp_unpack_enum (bp, omp_clause_schedule_kind,
OMP_CLAUSE_SCHEDULE_LAST);
break;
case OMP_CLAUSE_DEPEND:
OMP_CLAUSE_DEPEND_KIND (expr)
= bp_unpack_enum (bp, omp_clause_depend_kind, OMP_CLAUSE_DEPEND_LAST);
break;
case OMP_CLAUSE_MAP:
OMP_CLAUSE_SET_MAP_KIND (expr, bp_unpack_enum (bp, gomp_map_kind,
GOMP_MAP_LAST));
break;
case OMP_CLAUSE_PROC_BIND:
OMP_CLAUSE_PROC_BIND_KIND (expr)
= bp_unpack_enum (bp, omp_clause_proc_bind_kind,
OMP_CLAUSE_PROC_BIND_LAST);
break;
case OMP_CLAUSE_REDUCTION:
OMP_CLAUSE_REDUCTION_CODE (expr)
= bp_unpack_enum (bp, tree_code, MAX_TREE_CODES);
break;
default:
break;
}
}
/* Read all the language-independent bitfield values for EXPR from IB.
Return the partially unpacked bitpack so the caller can unpack any other
bitfield values that the writer may have written. */
void
streamer_read_tree_bitfields (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
enum tree_code code;
struct bitpack_d bp;
/* Read the bitpack of non-pointer values from IB. */
bp = streamer_read_bitpack (ib);
/* The first word in BP contains the code of the tree that we
are about to read. */
code = (enum tree_code) bp_unpack_value (&bp, 16);
lto_tag_check (lto_tree_code_to_tag (code),
lto_tree_code_to_tag (TREE_CODE (expr)));
/* Note that all these functions are highly sensitive to changes in
the types and sizes of each of the fields being packed. */
unpack_ts_base_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
unpack_ts_int_cst_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
unpack_ts_real_cst_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
unpack_ts_fixed_cst_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
stream_input_location (&DECL_SOURCE_LOCATION (expr), &bp, data_in);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
unpack_ts_decl_common_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
unpack_ts_decl_wrtl_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
unpack_ts_decl_with_vis_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
unpack_ts_function_decl_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
unpack_ts_type_common_value_fields (&bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_EXP))
{
stream_input_location (&EXPR_CHECK (expr)->exp.locus, &bp, data_in);
if (code == MEM_REF
|| code == TARGET_MEM_REF)
{
MR_DEPENDENCE_CLIQUE (expr)
= (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
if (MR_DEPENDENCE_CLIQUE (expr) != 0)
MR_DEPENDENCE_BASE (expr)
= (unsigned)bp_unpack_value (&bp, sizeof (short) * 8);
}
}
if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
unpack_ts_block_value_fields (data_in, &bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
cl_optimization_stream_in (&bp, TREE_OPTIMIZATION (expr));
if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
{
unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
if (length > 0)
vec_safe_grow (BINFO_BASE_ACCESSES (expr), length);
}
if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
{
unsigned HOST_WIDE_INT length = bp_unpack_var_len_unsigned (&bp);
if (length > 0)
vec_safe_grow (CONSTRUCTOR_ELTS (expr), length);
}
#ifndef ACCEL_COMPILER
if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
{
cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
if (targetm.target_option.post_stream_in)
targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
}
#endif
if (code == OMP_CLAUSE)
unpack_ts_omp_clause_value_fields (data_in, &bp, expr);
}
/* Materialize a new tree from input block IB using descriptors in
DATA_IN. The code for the new tree should match TAG. Store in
*IX_P the index into the reader cache where the new tree is stored. */
tree
streamer_alloc_tree (struct lto_input_block *ib, struct data_in *data_in,
enum LTO_tags tag)
{
enum tree_code code;
tree result;
#ifdef LTO_STREAMER_DEBUG
HOST_WIDE_INT orig_address_in_writer;
#endif
result = NULL_TREE;
#ifdef LTO_STREAMER_DEBUG
/* Read the word representing the memory address for the tree
as it was written by the writer. This is useful when
debugging differences between the writer and reader. */
orig_address_in_writer = streamer_read_hwi (ib);
gcc_assert ((intptr_t) orig_address_in_writer == orig_address_in_writer);
#endif
code = lto_tag_to_tree_code (tag);
/* We should never see an SSA_NAME tree. Only the version numbers of
SSA names are ever written out. See input_ssa_names. */
gcc_assert (code != SSA_NAME);
/* Instantiate a new tree using the header data. */
if (CODE_CONTAINS_STRUCT (code, TS_STRING))
result = streamer_read_string_cst (data_in, ib);
else if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
result = input_identifier (data_in, ib);
else if (CODE_CONTAINS_STRUCT (code, TS_VEC))
{
HOST_WIDE_INT len = streamer_read_hwi (ib);
result = make_tree_vec (len);
}
else if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
{
HOST_WIDE_INT len = streamer_read_hwi (ib);
result = make_vector (len);
}
else if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
{
unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
result = make_tree_binfo (len);
}
else if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
{
unsigned HOST_WIDE_INT len = streamer_read_uhwi (ib);
unsigned HOST_WIDE_INT ext_len = streamer_read_uhwi (ib);
result = make_int_cst (len, ext_len);
}
else if (code == CALL_EXPR)
{
unsigned HOST_WIDE_INT nargs = streamer_read_uhwi (ib);
return build_vl_exp (CALL_EXPR, nargs + 3);
}
else if (code == OMP_CLAUSE)
{
enum omp_clause_code subcode
= (enum omp_clause_code) streamer_read_uhwi (ib);
return build_omp_clause (UNKNOWN_LOCATION, subcode);
}
else
{
/* For all other nodes, materialize the tree with a raw
make_node call. */
result = make_node (code);
}
#ifdef LTO_STREAMER_DEBUG
/* Store the original address of the tree as seen by the writer
in RESULT's aux field. This is useful when debugging streaming
problems. This way, a debugging session can be started on
both writer and reader with a breakpoint using this address
value in both. */
lto_orig_address_map (result, (intptr_t) orig_address_in_writer);
#endif
return result;
}
/* Read all pointer fields in the TS_COMMON structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_common_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
if (TREE_CODE (expr) != IDENTIFIER_NODE)
TREE_TYPE (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_VECTOR structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
unsigned i;
for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_COMPLEX structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_complex_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
TREE_REALPART (expr) = stream_read_tree (ib, data_in);
TREE_IMAGPART (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_DECL_MINIMAL structure of EXPR
from input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_decl_minimal_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
DECL_NAME (expr) = stream_read_tree (ib, data_in);
DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_DECL_COMMON structure of EXPR from
input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_decl_common_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
DECL_SIZE (expr) = stream_read_tree (ib, data_in);
DECL_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
DECL_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
/* Do not stream DECL_ABSTRACT_ORIGIN. We cannot handle debug information
for early inlining so drop it on the floor instead of ICEing in
dwarf2out.c. */
if ((TREE_CODE (expr) == VAR_DECL
|| TREE_CODE (expr) == PARM_DECL)
&& DECL_HAS_VALUE_EXPR_P (expr))
SET_DECL_VALUE_EXPR (expr, stream_read_tree (ib, data_in));
if (TREE_CODE (expr) == VAR_DECL)
{
tree dexpr = stream_read_tree (ib, data_in);
if (dexpr)
SET_DECL_DEBUG_EXPR (expr, dexpr);
}
}
/* Read all pointer fields in the TS_DECL_NON_COMMON structure of
EXPR from input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_decl_non_common_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
if (TREE_CODE (expr) == TYPE_DECL)
DECL_ORIGINAL_TYPE (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_DECL_WITH_VIS structure of EXPR
from input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_decl_with_vis_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
tree id;
id = stream_read_tree (ib, data_in);
if (id)
{
gcc_assert (TREE_CODE (id) == IDENTIFIER_NODE);
SET_DECL_ASSEMBLER_NAME (expr, id);
}
}
/* Read all pointer fields in the TS_FIELD_DECL structure of EXPR from
input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_field_decl_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
DECL_FIELD_OFFSET (expr) = stream_read_tree (ib, data_in);
DECL_BIT_FIELD_TYPE (expr) = stream_read_tree (ib, data_in);
DECL_BIT_FIELD_REPRESENTATIVE (expr) = stream_read_tree (ib, data_in);
DECL_FIELD_BIT_OFFSET (expr) = stream_read_tree (ib, data_in);
DECL_FCONTEXT (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_FUNCTION_DECL structure of EXPR
from input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_function_decl_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
DECL_VINDEX (expr) = stream_read_tree (ib, data_in);
/* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */
DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in);
#ifndef ACCEL_COMPILER
DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);
#endif
DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in);
/* If the file contains a function with an EH personality set,
then it was compiled with -fexceptions. In that case, initialize
the backend EH machinery. */
if (DECL_FUNCTION_PERSONALITY (expr))
lto_init_eh ();
}
/* Read all pointer fields in the TS_TYPE_COMMON structure of EXPR from
input block IB. DATA_IN contains tables and descriptors for the file
being read. */
static void
lto_input_ts_type_common_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
TYPE_SIZE (expr) = stream_read_tree (ib, data_in);
TYPE_SIZE_UNIT (expr) = stream_read_tree (ib, data_in);
TYPE_ATTRIBUTES (expr) = stream_read_tree (ib, data_in);
TYPE_NAME (expr) = stream_read_tree (ib, data_in);
/* Do not stream TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be
reconstructed during fixup. */
/* Do not stream TYPE_NEXT_VARIANT, we reconstruct the variant lists
during fixup. */
TYPE_MAIN_VARIANT (expr) = stream_read_tree (ib, data_in);
TYPE_CONTEXT (expr) = stream_read_tree (ib, data_in);
/* TYPE_CANONICAL gets re-computed during type merging. */
TYPE_CANONICAL (expr) = NULL_TREE;
TYPE_STUB_DECL (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_TYPE_NON_COMMON structure of EXPR
from input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_type_non_common_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in,
tree expr)
{
if (TREE_CODE (expr) == ENUMERAL_TYPE)
TYPE_VALUES (expr) = stream_read_tree (ib, data_in);
else if (TREE_CODE (expr) == ARRAY_TYPE)
TYPE_DOMAIN (expr) = stream_read_tree (ib, data_in);
else if (RECORD_OR_UNION_TYPE_P (expr))
TYPE_FIELDS (expr) = streamer_read_chain (ib, data_in);
else if (TREE_CODE (expr) == FUNCTION_TYPE
|| TREE_CODE (expr) == METHOD_TYPE)
TYPE_ARG_TYPES (expr) = stream_read_tree (ib, data_in);
if (!POINTER_TYPE_P (expr))
TYPE_MINVAL (expr) = stream_read_tree (ib, data_in);
TYPE_MAXVAL (expr) = stream_read_tree (ib, data_in);
if (RECORD_OR_UNION_TYPE_P (expr))
TYPE_BINFO (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_LIST structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_list_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
TREE_PURPOSE (expr) = stream_read_tree (ib, data_in);
TREE_VALUE (expr) = stream_read_tree (ib, data_in);
TREE_CHAIN (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_VEC structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_vec_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
int i;
/* Note that TREE_VEC_LENGTH was read by streamer_alloc_tree to
instantiate EXPR. */
for (i = 0; i < TREE_VEC_LENGTH (expr); i++)
TREE_VEC_ELT (expr, i) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in the TS_EXP structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
int i;
tree block;
for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
block = stream_read_tree (ib, data_in);
/* TODO: Block is stored in the locus information. It may make more sense to
to make it go via the location cache. */
if (block)
{
data_in->location_cache.apply_location_cache ();
TREE_SET_BLOCK (expr, block);
}
}
/* Read all pointer fields in the TS_BLOCK structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
/* Stream BLOCK_ABSTRACT_ORIGIN and BLOCK_SOURCE_LOCATION for
the limited cases we can handle - those that represent inlined
function scopes. For the rest them on the floor instead of ICEing in
dwarf2out.c. */
BLOCK_ABSTRACT_ORIGIN (expr) = stream_read_tree (ib, data_in);
/* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
for early inlined BLOCKs so drop it on the floor instead of ICEing in
dwarf2out.c. */
/* BLOCK_FRAGMENT_ORIGIN and BLOCK_FRAGMENT_CHAIN is not live at LTO
streaming time. */
/* We re-compute BLOCK_SUBBLOCKS of our parent here instead
of streaming it. For non-BLOCK BLOCK_SUPERCONTEXTs we still
stream the child relationship explicitly. */
if (BLOCK_SUPERCONTEXT (expr)
&& TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == BLOCK)
{
BLOCK_CHAIN (expr) = BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr));
BLOCK_SUBBLOCKS (BLOCK_SUPERCONTEXT (expr)) = expr;
}
/* The global block is rooted at the TU decl. Hook it here to
avoid the need to stream in this block during WPA time. */
else if (BLOCK_SUPERCONTEXT (expr)
&& TREE_CODE (BLOCK_SUPERCONTEXT (expr)) == TRANSLATION_UNIT_DECL)
DECL_INITIAL (BLOCK_SUPERCONTEXT (expr)) = expr;
/* The function-level block is connected at the time we read in
function bodies for the same reason. */
}
/* Read all pointer fields in the TS_BINFO structure of EXPR from input
block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
unsigned i;
tree t;
/* Note that the number of slots in EXPR was read in
streamer_alloc_tree when instantiating EXPR. However, the
vector is empty so we cannot rely on vec::length to know how many
elements to read. So, this list is emitted as a 0-terminated
list on the writer side. */
do
{
t = stream_read_tree (ib, data_in);
if (t)
BINFO_BASE_BINFOS (expr)->quick_push (t);
}
while (t);
BINFO_OFFSET (expr) = stream_read_tree (ib, data_in);
BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
/* The vector of BINFO_BASE_ACCESSES is pre-allocated during
unpacking the bitfield section. */
for (i = 0; i < vec_safe_length (BINFO_BASE_ACCESSES (expr)); i++)
{
tree a = stream_read_tree (ib, data_in);
(*BINFO_BASE_ACCESSES (expr))[i] = a;
}
/* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
and BINFO_VPTR_INDEX; these are used by C++ FE only. */
}
/* Read all pointer fields in the TS_CONSTRUCTOR structure of EXPR from
input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
unsigned i;
for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
{
constructor_elt e;
e.index = stream_read_tree (ib, data_in);
e.value = stream_read_tree (ib, data_in);
(*CONSTRUCTOR_ELTS (expr))[i] = e;
}
}
/* Read all pointer fields in the TS_OMP_CLAUSE structure of EXPR from
input block IB. DATA_IN contains tables and descriptors for the
file being read. */
static void
lto_input_ts_omp_clause_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
int i;
for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (expr)]; i++)
OMP_CLAUSE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
OMP_CLAUSE_CHAIN (expr) = stream_read_tree (ib, data_in);
}
/* Read all pointer fields in EXPR from input block IB. DATA_IN
contains tables and descriptors for the file being read. */
void
streamer_read_tree_body (struct lto_input_block *ib, struct data_in *data_in,
tree expr)
{
enum tree_code code;
code = TREE_CODE (expr);
if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
lto_input_ts_common_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
lto_input_ts_vector_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
lto_input_ts_complex_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
lto_input_ts_decl_minimal_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
lto_input_ts_decl_common_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
lto_input_ts_decl_non_common_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
lto_input_ts_decl_with_vis_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
lto_input_ts_field_decl_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
lto_input_ts_function_decl_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
lto_input_ts_type_common_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
lto_input_ts_type_non_common_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_LIST))
lto_input_ts_list_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_VEC))
lto_input_ts_vec_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_EXP))
lto_input_ts_exp_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
lto_input_ts_block_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
lto_input_ts_binfo_tree_pointers (ib, data_in, expr);
if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
if (code == OMP_CLAUSE)
lto_input_ts_omp_clause_tree_pointers (ib, data_in, expr);
}
/* Read an index IX from input block IB and return the tree node at
DATA_IN->FILE_DATA->GLOBALS_INDEX[IX]. */
tree
streamer_get_pickled_tree (struct lto_input_block *ib, struct data_in *data_in)
{
unsigned HOST_WIDE_INT ix;
tree result;
enum LTO_tags expected_tag;
ix = streamer_read_uhwi (ib);
expected_tag = streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS);
result = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
gcc_assert (result
&& TREE_CODE (result) == lto_tag_to_tree_code (expected_tag));
return result;
}
/* Read a code and class from input block IB and return the
corresponding builtin. DATA_IN is as in stream_read_tree. */
tree
streamer_get_builtin_tree (struct lto_input_block *ib, struct data_in *data_in)
{
enum built_in_class fclass;
enum built_in_function fcode;
const char *asmname;
tree result;
fclass = streamer_read_enum (ib, built_in_class, BUILT_IN_LAST);
gcc_assert (fclass == BUILT_IN_NORMAL || fclass == BUILT_IN_MD);
fcode = (enum built_in_function) streamer_read_uhwi (ib);
if (fclass == BUILT_IN_NORMAL)
{
if (fcode >= END_BUILTINS)
fatal_error (input_location,
"machine independent builtin code out of range");
result = builtin_decl_explicit (fcode);
if (!result
&& fcode > BEGIN_CHKP_BUILTINS
&& fcode < END_CHKP_BUILTINS)
{
fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS - 1);
result = builtin_decl_explicit (fcode);
result = chkp_maybe_clone_builtin_fndecl (result);
}
gcc_assert (result);
}
else if (fclass == BUILT_IN_MD)
{
result = targetm.builtin_decl (fcode, true);
if (!result || result == error_mark_node)
fatal_error (input_location, "target specific builtin not available");
}
else
gcc_unreachable ();
asmname = streamer_read_string (data_in, ib);
if (asmname)
set_builtin_user_assembler_name (result, asmname);
streamer_tree_cache_append (data_in->reader_cache, result, 0);
return result;
}