re PR tree-optimization/46172 (ICE: in expand_widen_pattern_expr, at optabs.c:522 with -ftree-vectorize -fno-tree-dce)

2010-11-18  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/46172
	* tree-vect-loop-manip.c (remove_dead_stmts_from_loop): New
	function.
	(slpeel_tree_peel_loop_to_edge): Call it.

	* gcc.dg/torture/pr46172.c: New testcase.

From-SVN: r166908