2013-01-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/55888
	PR tree-optimization/55862
	* tree-ssa-pre.c (phi_translate_1): Revert previous change.
	(valid_in_sets): Check if a NAME has a leader in AVAIL_OUT,
	not if it is contained therein.

	* gcc.dg/torture/pr55888.c: New testcase.

From-SVN: r194971