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gimplify.c (gimplify_init_constructor): Do not create a temporary for a volatile LHS if... 

* gimplify.c (gimplify_init_constructor): Do not create a temporary for
	a volatile LHS if the constructor has only one element.

From-SVN: r163729
This commit is contained in:
Eric Botcazou 2010-09-01 12:19:11 +00:00 committed by Eric Botcazou
parent 2574ca46d7
commit aa69e489ec
2 changed files with 9 additions and 3 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-09-01 Eric Botcazou <ebotcazou@adacore.com>
* gimplify.c (gimplify_init_constructor): Do not create a temporary for
a volatile LHS if the constructor has only one element.
2010-08-28 Uros Bizjak <ubizjak@gmail.com>
PR target/41484

7
gcc/gimplify.c
View File

@ -3715,11 +3715,12 @@ gimplify_init_constructor (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
}
}
/* If the target is volatile and we have non-zero elements
initialize the target from a temporary. */
/* If the target is volatile, we have non-zero elements and more than
one field to assign, initialize the target from a temporary. */
if (TREE_THIS_VOLATILE (object)
&& !TREE_ADDRESSABLE (type)
&& num_nonzero_elements > 0)
&& num_nonzero_elements > 0
&& VEC_length (constructor_elt, elts) > 1)
{
tree temp = create_tmp_var (TYPE_MAIN_VARIANT (type), NULL);
TREE_OPERAND (*expr_p, 0) = temp;