re PR tree-optimization/80901 (ICE on valid code at -Os and above on x86_64-linux-gnu: in verify_loop_structure, at cfgloop.c:1644)

2017-05-30  Richard Biener  <rguenther@suse.de>

	PR middle-end/80901
	* cfgexpand.c (expand_gimple_cond): Match up loop fixup with
	split_edge code.

	* gcc.dg/torture/pr80901.c: New testcase.

From-SVN: r248681