static gimple
input_gimple_stmt (struct lto_input_block *ib, struct data_in *data_in,
struct function *fn, enum LTO_tags tag)
{
gimple stmt;
enum gimple_code code;
unsigned HOST_WIDE_INT num_ops;
size_t i;
struct bitpack_d bp;
code = lto_tag_to_gimple_code (tag);
/* Read the tuple header. */
bp = streamer_read_bitpack (ib);
num_ops = bp_unpack_var_len_unsigned (&bp);
stmt = gimple_alloc (code, num_ops);
stmt->gsbase.no_warning = bp_unpack_value (&bp, 1);
if (is_gimple_assign (stmt))
stmt->gsbase.nontemporal_move = bp_unpack_value (&bp, 1);
stmt->gsbase.has_volatile_ops = bp_unpack_value (&bp, 1);
stmt->gsbase.subcode = bp_unpack_var_len_unsigned (&bp);
/* Read location information. */
gimple_set_location (stmt, lto_input_location (ib, data_in));
/* Read lexical block reference. */
gimple_set_block (stmt, stream_read_tree (ib, data_in));
/* Read in all the operands. */
switch (code)
{
case GIMPLE_RESX:
gimple_resx_set_region (stmt, streamer_read_hwi (ib));
break;
case GIMPLE_EH_MUST_NOT_THROW:
gimple_eh_must_not_throw_set_fndecl (stmt, stream_read_tree (ib, data_in));
break;
case GIMPLE_EH_DISPATCH:
gimple_eh_dispatch_set_region (stmt, streamer_read_hwi (ib));
break;
case GIMPLE_ASM:
{
/* FIXME lto. Move most of this into a new gimple_asm_set_string(). */
tree str;
stmt->gimple_asm.ni = streamer_read_uhwi (ib);
stmt->gimple_asm.no = streamer_read_uhwi (ib);
stmt->gimple_asm.nc = streamer_read_uhwi (ib);
stmt->gimple_asm.nl = streamer_read_uhwi (ib);
str = streamer_read_string_cst (data_in, ib);
stmt->gimple_asm.string = TREE_STRING_POINTER (str);
}
/* Fallthru */
case GIMPLE_ASSIGN:
case GIMPLE_CALL:
case GIMPLE_RETURN:
case GIMPLE_SWITCH:
case GIMPLE_LABEL:
case GIMPLE_COND:
case GIMPLE_GOTO:
case GIMPLE_DEBUG:
for (i = 0; i < num_ops; i++)
{
tree op = stream_read_tree (ib, data_in);
gimple_set_op (stmt, i, op);
if (!op)
continue;
/* Fixup FIELD_DECLs in COMPONENT_REFs, they are not handled
by decl merging. */
if (TREE_CODE (op) == ADDR_EXPR)
op = TREE_OPERAND (op, 0);
while (handled_component_p (op))
{
if (TREE_CODE (op) == COMPONENT_REF)
{
tree field, type, tem;
tree closest_match = NULL_TREE;
field = TREE_OPERAND (op, 1);
type = DECL_CONTEXT (field);
for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
{
if (TREE_CODE (tem) != FIELD_DECL)
continue;
if (tem == field)
break;
if (DECL_NONADDRESSABLE_P (tem)
== DECL_NONADDRESSABLE_P (field)
&& gimple_compare_field_offset (tem, field))
{
if (types_compatible_p (TREE_TYPE (tem),
TREE_TYPE (field)))
break;
else
closest_match = tem;
}
}
/* In case of type mismatches across units we can fail
to unify some types and thus not find a proper
field-decl here. */
if (tem == NULL_TREE)
{
/* Thus, emit a ODR violation warning. */
if (warning_at (gimple_location (stmt), 0,
"use of type %<%E%> with two mismatching "
"declarations at field %<%E%>",
type, TREE_OPERAND (op, 1)))
{
if (TYPE_FIELDS (type))
inform (DECL_SOURCE_LOCATION (TYPE_FIELDS (type)),
"original type declared here");
inform (DECL_SOURCE_LOCATION (TREE_OPERAND (op, 1)),
"field in mismatching type declared here");
if (TYPE_NAME (TREE_TYPE (field))
&& (TREE_CODE (TYPE_NAME (TREE_TYPE (field)))
== TYPE_DECL))
inform (DECL_SOURCE_LOCATION
(TYPE_NAME (TREE_TYPE (field))),
"type of field declared here");
if (closest_match
&& TYPE_NAME (TREE_TYPE (closest_match))
&& (TREE_CODE (TYPE_NAME
(TREE_TYPE (closest_match))) == TYPE_DECL))
inform (DECL_SOURCE_LOCATION
(TYPE_NAME (TREE_TYPE (closest_match))),
"type of mismatching field declared here");
}
/* And finally fixup the types. */
TREE_OPERAND (op, 0)
= build1 (VIEW_CONVERT_EXPR, type,
TREE_OPERAND (op, 0));
}
else
TREE_OPERAND (op, 1) = tem;
}
op = TREE_OPERAND (op, 0);
}
}
if (is_gimple_call (stmt))
{
if (gimple_call_internal_p (stmt))
gimple_call_set_internal_fn
(stmt, streamer_read_enum (ib, internal_fn, IFN_LAST));
else
gimple_call_set_fntype (stmt, stream_read_tree (ib, data_in));
}
break;
case GIMPLE_NOP:
case GIMPLE_PREDICT:
break;
case GIMPLE_TRANSACTION:
gimple_transaction_set_label (stmt, stream_read_tree (ib, data_in));
break;
default:
internal_error ("bytecode stream: unknown GIMPLE statement tag %s",
lto_tag_name (tag));
}
/* Update the properties of symbols, SSA names and labels associated
with STMT. */
if (code == GIMPLE_ASSIGN || code == GIMPLE_CALL)
{
tree lhs = gimple_get_lhs (stmt);
if (lhs && TREE_CODE (lhs) == SSA_NAME)
SSA_NAME_DEF_STMT (lhs) = stmt;
}
else if (code == GIMPLE_LABEL)
gcc_assert (emit_label_in_global_context_p (gimple_label_label (stmt))
|| DECL_CONTEXT (gimple_label_label (stmt)) == fn->decl);
else if (code == GIMPLE_ASM)
{
unsigned i;
for (i = 0; i < gimple_asm_noutputs (stmt); i++)
{
tree op = TREE_VALUE (gimple_asm_output_op (stmt, i));
if (TREE_CODE (op) == SSA_NAME)
SSA_NAME_DEF_STMT (op) = stmt;
}
}
/* Reset alias information. */
if (code == GIMPLE_CALL)
gimple_call_reset_alias_info (stmt);
/* Mark the statement modified so its operand vectors can be filled in. */
gimple_set_modified (stmt, true);
return stmt;
}
static gimple *
input_gimple_stmt (struct lto_input_block *ib, struct data_in *data_in,
enum LTO_tags tag)
{
gimple *stmt;
enum gimple_code code;
unsigned HOST_WIDE_INT num_ops;
size_t i;
struct bitpack_d bp;
bool has_hist;
code = lto_tag_to_gimple_code (tag);
/* Read the tuple header. */
bp = streamer_read_bitpack (ib);
num_ops = bp_unpack_var_len_unsigned (&bp);
stmt = gimple_alloc (code, num_ops);
stmt->no_warning = bp_unpack_value (&bp, 1);
if (is_gimple_assign (stmt))
stmt->nontemporal_move = bp_unpack_value (&bp, 1);
stmt->has_volatile_ops = bp_unpack_value (&bp, 1);
has_hist = bp_unpack_value (&bp, 1);
stmt->subcode = bp_unpack_var_len_unsigned (&bp);
/* Read location information. Caching here makes no sense until streamer
cache can handle the following gimple_set_block. */
gimple_set_location (stmt, stream_input_location_now (&bp, data_in));
/* Read lexical block reference. */
gimple_set_block (stmt, stream_read_tree (ib, data_in));
/* Read in all the operands. */
switch (code)
{
case GIMPLE_RESX:
gimple_resx_set_region (as_a <gresx *> (stmt),
streamer_read_hwi (ib));
break;
case GIMPLE_EH_MUST_NOT_THROW:
gimple_eh_must_not_throw_set_fndecl (
as_a <geh_mnt *> (stmt),
stream_read_tree (ib, data_in));
break;
case GIMPLE_EH_DISPATCH:
gimple_eh_dispatch_set_region (as_a <geh_dispatch *> (stmt),
streamer_read_hwi (ib));
break;
case GIMPLE_ASM:
{
/* FIXME lto. Move most of this into a new gimple_asm_set_string(). */
gasm *asm_stmt = as_a <gasm *> (stmt);
tree str;
asm_stmt->ni = streamer_read_uhwi (ib);
asm_stmt->no = streamer_read_uhwi (ib);
asm_stmt->nc = streamer_read_uhwi (ib);
asm_stmt->nl = streamer_read_uhwi (ib);
str = streamer_read_string_cst (data_in, ib);
asm_stmt->string = TREE_STRING_POINTER (str);
}
/* Fallthru */
case GIMPLE_ASSIGN:
case GIMPLE_CALL:
case GIMPLE_RETURN:
case GIMPLE_SWITCH:
case GIMPLE_LABEL:
case GIMPLE_COND:
case GIMPLE_GOTO:
case GIMPLE_DEBUG:
for (i = 0; i < num_ops; i++)
{
tree *opp, op = stream_read_tree (ib, data_in);
gimple_set_op (stmt, i, op);
if (!op)
continue;
opp = gimple_op_ptr (stmt, i);
if (TREE_CODE (*opp) == ADDR_EXPR)
opp = &TREE_OPERAND (*opp, 0);
while (handled_component_p (*opp))
opp = &TREE_OPERAND (*opp, 0);
/* At LTO output time we wrap all global decls in MEM_REFs to
allow seamless replacement with prevailing decls. Undo this
here if the prevailing decl allows for this.
??? Maybe we should simply fold all stmts. */
if (TREE_CODE (*opp) == MEM_REF
&& TREE_CODE (TREE_OPERAND (*opp, 0)) == ADDR_EXPR
&& integer_zerop (TREE_OPERAND (*opp, 1))
&& (TREE_THIS_VOLATILE (*opp)
== TREE_THIS_VOLATILE
(TREE_OPERAND (TREE_OPERAND (*opp, 0), 0)))
&& !TYPE_REF_CAN_ALIAS_ALL (TREE_TYPE (TREE_OPERAND (*opp, 1)))
&& (TREE_TYPE (*opp)
== TREE_TYPE (TREE_TYPE (TREE_OPERAND (*opp, 1))))
&& (TREE_TYPE (*opp)
== TREE_TYPE (TREE_OPERAND (TREE_OPERAND (*opp, 0), 0))))
*opp = TREE_OPERAND (TREE_OPERAND (*opp, 0), 0);
}
if (gcall *call_stmt = dyn_cast <gcall *> (stmt))
{
if (gimple_call_internal_p (call_stmt))
gimple_call_set_internal_fn
(call_stmt, streamer_read_enum (ib, internal_fn, IFN_LAST));
else
gimple_call_set_fntype (call_stmt, stream_read_tree (ib, data_in));
}
break;
case GIMPLE_NOP:
case GIMPLE_PREDICT:
break;
case GIMPLE_TRANSACTION:
gimple_transaction_set_label (as_a <gtransaction *> (stmt),
stream_read_tree (ib, data_in));
break;
default:
internal_error ("bytecode stream: unknown GIMPLE statement tag %s",
lto_tag_name (tag));
}
/* Update the properties of symbols, SSA names and labels associated
with STMT. */
if (code == GIMPLE_ASSIGN || code == GIMPLE_CALL)
{
tree lhs = gimple_get_lhs (stmt);
if (lhs && TREE_CODE (lhs) == SSA_NAME)
SSA_NAME_DEF_STMT (lhs) = stmt;
}
else if (code == GIMPLE_ASM)
{
gasm *asm_stmt = as_a <gasm *> (stmt);
unsigned i;
for (i = 0; i < gimple_asm_noutputs (asm_stmt); i++)
{
tree op = TREE_VALUE (gimple_asm_output_op (asm_stmt, i));
if (TREE_CODE (op) == SSA_NAME)
SSA_NAME_DEF_STMT (op) = stmt;
}
}
/* Reset alias information. */
if (code == GIMPLE_CALL)
gimple_call_reset_alias_info (as_a <gcall *> (stmt));
/* Mark the statement modified so its operand vectors can be filled in. */
gimple_set_modified (stmt, true);
if (has_hist)
stream_in_histogram_value (ib, stmt);
return stmt;
}
