/* Routines for reading trees from a file stream.
- Copyright 2011 Free Software Foundation, Inc.
+ Copyright (C) 2011-2013 Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@google.com>
This file is part of GCC.
tree
streamer_read_chain (struct lto_input_block *ib, struct data_in *data_in)
{
- int i, count;
tree first, prev, curr;
+ /* The chain is written as NULL terminated list of trees. */
first = prev = NULL_TREE;
- count = streamer_read_hwi (ib);
- for (i = 0; i < count; i++)
+ do
{
curr = stream_read_tree (ib, data_in);
if (prev)
else
first = curr;
- TREE_CHAIN (curr) = NULL_TREE;
prev = curr;
}
+ while (curr);
return first;
}
}
+/* 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)
+{
+ TREE_INT_CST_LOW (expr) = bp_unpack_var_len_unsigned (bp);
+ TREE_INT_CST_HIGH (expr) = 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_fixed_cst_value_fields (struct bitpack_d *bp, tree expr)
{
- struct fixed_value fv;
-
- fv.mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
- fv.data.low = bp_unpack_var_len_int (bp);
- fv.data.high = bp_unpack_var_len_int (bp);
- TREE_FIXED_CST (expr) = fv;
+ FIXED_VALUE_TYPE *fp = ggc_alloc_fixed_value ();
+ fp->mode = bp_unpack_enum (bp, machine_mode, MAX_MACHINE_MODE);
+ 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. */
expr->decl_common.off_align = bp_unpack_value (bp, 8);
}
+ if (TREE_CODE (expr) == VAR_DECL)
+ 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)
if (TREE_CODE (expr) == VAR_DECL
|| TREE_CODE (expr) == PARM_DECL)
DECL_HAS_VALUE_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
- DECL_RESTRICTED_P (expr) = (unsigned) bp_unpack_value (bp, 1);
}
}
of expression EXPR from bitpack BP. */
static void
-unpack_ts_block_value_fields (struct bitpack_d *bp, tree expr)
+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. */
+ BLOCK_SOURCE_LOCATION (expr) = stream_input_location (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 bitpack_d *bp ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
+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 a TS_TARGET_OPTION tree from BP into EXPR. */
+
+static void
+unpack_ts_target_option (struct bitpack_d *bp, tree expr)
{
+ unsigned i, len;
+ struct cl_target_option *t = TREE_TARGET_OPTION (expr);
+
+ len = sizeof (struct cl_target_option);
+ for (i = 0; i < len; i++)
+ ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
+ if (bp_unpack_value (bp, 32) != 0x12345678)
+ fatal_error ("cl_target_option size mismatch in LTO reader and writer");
}
+/* Unpack a TS_OPTIMIZATION tree from BP into EXPR. */
+
+static void
+unpack_ts_optimization (struct bitpack_d *bp, tree expr)
+{
+ unsigned i, len;
+ struct cl_optimization *t = TREE_OPTIMIZATION (expr);
+
+ len = sizeof (struct cl_optimization);
+ for (i = 0; i < len; i++)
+ ((unsigned char *)t)[i] = bp_unpack_value (bp, 8);
+ if (bp_unpack_value (bp, 32) != 0x12345678)
+ fatal_error ("cl_optimization size mismatch in LTO reader and writer");
+}
+
+
/* Unpack all the non-pointer fields in EXPR into a bit pack. */
static void
-unpack_value_fields (struct bitpack_d *bp, tree expr)
+unpack_value_fields (struct data_in *data_in, struct bitpack_d *bp, tree expr)
{
enum tree_code code;
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))
+ DECL_SOURCE_LOCATION (expr) = stream_input_location (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_TYPE_COMMON))
unpack_ts_type_common_value_fields (bp, expr);
+ if (CODE_CONTAINS_STRUCT (code, TS_EXP))
+ SET_EXPR_LOCATION (expr, stream_input_location (bp, data_in));
+
if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
- unpack_ts_block_value_fields (bp, expr);
+ 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 (bp, expr);
+ unpack_ts_translation_unit_decl_value_fields (data_in, bp, expr);
+
+ if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
+ unpack_ts_target_option (bp, expr);
+
+ if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
+ unpack_ts_optimization (bp, 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);
+ }
}
bitfield values that the writer may have written. */
struct bitpack_d
-streamer_read_tree_bitfields (struct lto_input_block *ib, tree expr)
+streamer_read_tree_bitfields (struct lto_input_block *ib,
+ struct data_in *data_in, tree expr)
{
enum tree_code code;
struct bitpack_d bp;
lto_tree_code_to_tag (TREE_CODE (expr)));
/* Unpack all the value fields from BP. */
- unpack_value_fields (&bp, expr);
+ unpack_value_fields (data_in, &bp, expr);
return bp;
}
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);
lto_input_ts_vector_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
- TREE_VECTOR_CST_ELTS (expr) = streamer_read_chain (ib, data_in);
+ unsigned i;
+ for (i = 0; i < VECTOR_CST_NELTS (expr); ++i)
+ VECTOR_CST_ELT (expr, i) = stream_read_tree (ib, data_in);
}
{
DECL_NAME (expr) = stream_read_tree (ib, data_in);
DECL_CONTEXT (expr) = stream_read_tree (ib, data_in);
- DECL_SOURCE_LOCATION (expr) = lto_input_location (ib, data_in);
}
for early inlining so drop it on the floor instead of ICEing in
dwarf2out.c. */
- if (TREE_CODE (expr) == PARM_DECL)
- TREE_CHAIN (expr) = streamer_read_chain (ib, data_in);
-
if ((TREE_CODE (expr) == VAR_DECL
|| TREE_CODE (expr) == PARM_DECL)
&& DECL_HAS_VALUE_EXPR_P (expr))
{
if (TREE_CODE (expr) == FUNCTION_DECL)
{
- DECL_ARGUMENTS (expr) = stream_read_tree (ib, data_in);
+ DECL_ARGUMENTS (expr) = streamer_read_chain (ib, data_in);
DECL_RESULT (expr) = stream_read_tree (ib, data_in);
}
else if (TREE_CODE (expr) == TYPE_DECL)
lto_input_ts_exp_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
- int i, length;
- location_t loc;
-
- length = streamer_read_hwi (ib);
- gcc_assert (length == TREE_OPERAND_LENGTH (expr));
+ int i;
- for (i = 0; i < length; i++)
+ for (i = 0; i < TREE_OPERAND_LENGTH (expr); i++)
TREE_OPERAND (expr, i) = stream_read_tree (ib, data_in);
- loc = lto_input_location (ib, data_in);
- SET_EXPR_LOCATION (expr, loc);
- TREE_BLOCK (expr) = stream_read_tree (ib, data_in);
+ TREE_SET_BLOCK (expr, stream_read_tree (ib, data_in));
}
lto_input_ts_block_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
- /* Do not stream BLOCK_SOURCE_LOCATION. We cannot handle debug information
- for early inlining so drop it on the floor instead of ICEing in
- dwarf2out.c. */
BLOCK_VARS (expr) = streamer_read_chain (ib, data_in);
- /* Do not stream BLOCK_NONLOCALIZED_VARS. We cannot handle debug information
- for early inlining so drop it on the floor instead of ICEing in
- dwarf2out.c. */
-
BLOCK_SUPERCONTEXT (expr) = stream_read_tree (ib, data_in);
- /* Do not stream BLOCK_ABSTRACT_ORIGIN. We cannot handle debug information
- for early inlining so drop it on the floor instead of ICEing 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_FRAGMENT_ORIGIN (expr) = stream_read_tree (ib, data_in);
- BLOCK_FRAGMENT_CHAIN (expr) = stream_read_tree (ib, data_in);
+ 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
lto_input_ts_binfo_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
- unsigned i, len;
+ 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
+ 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)
- VEC_quick_push (tree, BINFO_BASE_BINFOS (expr), t);
+ BINFO_BASE_BINFOS (expr)->quick_push (t);
}
while (t);
BINFO_VTABLE (expr) = stream_read_tree (ib, data_in);
BINFO_VPTR_FIELD (expr) = stream_read_tree (ib, data_in);
- len = streamer_read_uhwi (ib);
- if (len > 0)
+ /* 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++)
{
- VEC_reserve_exact (tree, gc, BINFO_BASE_ACCESSES (expr), len);
- for (i = 0; i < len; i++)
- {
- tree a = stream_read_tree (ib, data_in);
- VEC_quick_push (tree, BINFO_BASE_ACCESSES (expr), a);
- }
+ tree a = stream_read_tree (ib, data_in);
+ (*BINFO_BASE_ACCESSES (expr))[i] = a;
}
BINFO_INHERITANCE_CHAIN (expr) = stream_read_tree (ib, data_in);
lto_input_ts_constructor_tree_pointers (struct lto_input_block *ib,
struct data_in *data_in, tree expr)
{
- unsigned i, len;
+ unsigned i;
- len = streamer_read_uhwi (ib);
- for (i = 0; i < len; i++)
+ for (i = 0; i < CONSTRUCTOR_NELTS (expr); i++)
{
- tree index, value;
-
- index = stream_read_tree (ib, data_in);
- value = stream_read_tree (ib, data_in);
- CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (expr), index, value);
+ constructor_elt e;
+ e.index = stream_read_tree (ib, data_in);
+ e.value = stream_read_tree (ib, data_in);
+ (*CONSTRUCTOR_ELTS (expr))[i] = e;
}
}
-/* Input a TS_TARGET_OPTION tree from IB into EXPR. */
-
-static void
-lto_input_ts_target_option (struct lto_input_block *ib, tree expr)
-{
- unsigned i, len;
- struct bitpack_d bp;
- struct cl_target_option *t = TREE_TARGET_OPTION (expr);
-
- bp = streamer_read_bitpack (ib);
- len = sizeof (struct cl_target_option);
- for (i = 0; i < len; i++)
- ((unsigned char *)t)[i] = bp_unpack_value (&bp, 8);
- if (bp_unpack_value (&bp, 32) != 0x12345678)
- fatal_error ("cl_target_option size mismatch in LTO reader and writer");
-}
-
-/* Input a TS_OPTIMIZATION tree from IB into EXPR. */
-
-static void
-lto_input_ts_optimization (struct lto_input_block *ib, tree expr)
-{
- unsigned i, len;
- struct bitpack_d bp;
- struct cl_optimization *t = TREE_OPTIMIZATION (expr);
-
- bp = streamer_read_bitpack (ib);
- len = sizeof (struct cl_optimization);
- for (i = 0; i < len; i++)
- ((unsigned char *)t)[i] = bp_unpack_value (&bp, 8);
- if (bp_unpack_value (&bp, 32) != 0x12345678)
- fatal_error ("cl_optimization size mismatch in LTO reader and writer");
-}
-
-/* Input a TS_TRANSLATION_UNIT_DECL tree from IB and DATA_IN into EXPR. */
-
-static void
-lto_input_ts_translation_unit_decl_tree_pointers (struct lto_input_block *ib,
- struct data_in *data_in,
- tree expr)
-{
- TRANSLATION_UNIT_LANGUAGE (expr) = xstrdup (streamer_read_string (data_in, ib));
- VEC_safe_push (tree, gc, all_translation_units, expr);
-}
-
/* Read all pointer fields in EXPR from input block IB. DATA_IN
contains tables and descriptors for the file being read. */
if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
lto_input_ts_constructor_tree_pointers (ib, data_in, expr);
-
- if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
- lto_input_ts_target_option (ib, expr);
-
- if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
- lto_input_ts_optimization (ib, expr);
-
- if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
- lto_input_ts_translation_unit_decl_tree_pointers (ib, data_in, expr);
}
tree
streamer_read_integer_cst (struct lto_input_block *ib, struct data_in *data_in)
{
- tree result, type;
- HOST_WIDE_INT low, high;
- bool overflow_p;
-
- type = stream_read_tree (ib, data_in);
- overflow_p = (streamer_read_uchar (ib) != 0);
- low = streamer_read_uhwi (ib);
- high = streamer_read_uhwi (ib);
- result = build_int_cst_wide (type, low, high);
-
- /* If the original constant had overflown, build a replica of RESULT to
- avoid modifying the shared constant returned by build_int_cst_wide. */
- if (overflow_p)
- {
- result = copy_node (result);
- TREE_OVERFLOW (result) = 1;
- }
-
- return result;
+ tree type = stream_read_tree (ib, data_in);
+ unsigned HOST_WIDE_INT low = streamer_read_uhwi (ib);
+ HOST_WIDE_INT high = streamer_read_hwi (ib);
+ return build_int_cst_wide (type, low, high);
}
projects / platform / upstream / gcc48.git / blobdiff