https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80453
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- git bisect points to r241329: commit 34b94be25f231249fa213152feb6b7208b4c0d13 Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> Date: Wed Oct 19 08:39:55 2016 +0000 2016-10-19 Richard Biener <rguent...@suse.de> * domwalk.c (dom_walker::walk): Use RPO order.