2007-05-12  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/31797
	* tree-ssa-forwprop.c (forward_propagate_addr_expr): Do not
	propagate into a stmt that has volatile ops.

	* gcc.c-torture/compile/pr31797.c: New testcase.

From-SVN: r124637