[Bug rtl-optimization/66444] [5/6 Regression] Miscompilation of Xen since r211078

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66444

--- Comment #12 from vries at gcc dot gnu.org ---
patch with test-case committed to trunk and backported to gcc-5-branch. Marking
resolved-fixed.