2013-04-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/57026
	* tree-vrp.c (simplify_conversion_using_ranges): Do not propagate
	from SSA names occuring in abnormal PHI nodes.

	* gcc.dg/torture/pr57026.c: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@198175 138bc75d-0d04-0410-961f-82ee72b054a4