2010-08-10  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-copy.c (set_copy_of_val): Use operand_equal_p.
	(copy_prop_visit_assignment): Simplify.
	(copy_prop_visit_stmt): Also visit assignments from
	constants.
	(copy_prop_visit_phi_node): Use operand_equal_p.

From-SVN: r163050