2012-09-13  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-sccvn.h (enum vn_kind): New.
	(vn_get_stmt_kind): Likewise.
	* tree-ssa-sccvn.c (vn_get_stmt_kind): New function, adjust
	ADDR_EXPR handling.
	(visit_use): Use it.
	* tree-ssa-pre.c (compute_avail): Likewise, simplify further.

	* gcc.dg/tree-ssa/ssa-fre-37.c: New testcase.

From-SVN: r191253