re PR middle-end/67005 (ICE: in verify_loop_structure, at cfgloop.c:1647 (loop with header n not in loop tree))

	PR middle-end/67005
	* tree-ssa-dce.c (remove_dead_stmt): Also schedule fixup if removing
	an entry into an irreducible region.

	* gcc.dg/torture/pr67005.c: New test.

From-SVN: r227268