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expr.c (expand_expr_real_1): If a temporary is made and the reference doesn't use the alias set of its type...

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* expr.c (expand_expr_real_1) <normal_inner_ref>: If a temporary
	is made and the reference doesn't use the alias set of its type,
	do not create the temporary using that type.

From-SVN: r122014
This commit is contained in:
Eric Botcazou 2007-02-15 20:51:29 +00:00 committed by Eric Botcazou
parent eab79d78e7
commit befdad0714
2 changed files with 18 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-02-15 Eric Botcazou <ebotcazou@adacore.com>
* expr.c (expand_expr_real_1) <normal_inner_ref>: If a temporary
is made and the reference doesn't use the alias set of its type,
do not create the temporary using that type.
2007-02-15 Aldy Hernandez <aldyh@redhat.com>
* jump.c: Remove prototypes for delete_computation and

15
gcc/expr.c
View File

@ -7711,9 +7711,18 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
necessarily be constant. */
if (mode == BLKmode)
{
rtx new
= assign_stack_temp_for_type
(ext_mode, GET_MODE_BITSIZE (ext_mode), 0, type);
HOST_WIDE_INT size = GET_MODE_BITSIZE (ext_mode);
rtx new;
/* If the reference doesn't use the alias set of its type,
we cannot create the temporary using that type. */
if (component_uses_parent_alias_set (exp))
{
new = assign_stack_local (ext_mode, size, 0);
set_mem_alias_set (new, get_alias_set (exp));
}
else
new = assign_stack_temp_for_type (ext_mode, size, 0, type);
emit_move_insn (new, op0);
op0 = copy_rtx (new);