tree-ssa-copy.c (replace_exp_1): Move op for warning-free use with checking disabled.

2009-05-28  Benjamin Kosnik  <bkoz@redhat.com>

        * tree-ssa-copy.c (replace_exp_1): Move op for warning-free use
        with checking disabled.

From-SVN: r147952

gcc/ChangeLog

+2009-05-28  Benjamin Kosnik  <bkoz@redhat.com>
+
+	* tree-ssa-copy.c (replace_exp_1): Move op for warning-free use
+	with checking disabled.
+
 2009-05-28  Dave Korn  <dave.korn.cygwin@gmail.com>
 
 	PR target/37216

gcc/tree-ssa-copy.c

@@ -160,9 +160,8 @@ static void
 replace_exp_1 (use_operand_p op_p, tree val,
     	       bool for_propagation ATTRIBUTE_UNUSED)
 {
-  tree op = USE_FROM_PTR (op_p);
-
 #if defined ENABLE_CHECKING
+  tree op = USE_FROM_PTR (op_p);
   gcc_assert (!(for_propagation
 		&& TREE_CODE (op) == SSA_NAME
 		&& TREE_CODE (val) == SSA_NAME