2013-05-07  Richard Biener  <rguenther@suse.de>

	* double-int.h (rshift): New overload.
	* double-int.c (rshift): New function.
	* tree-ssa-sccvn.c (copy_reference_ops_from_ref): Optimize.
	(create_reference_ops_from_ref): Remove.
	(vn_reference_insert): Use shared ops for constructing the
	reference and copy it.

From-SVN: r198676