[Bug tree-optimization/69336] Constant value not detected

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69336

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Should be fixed with

2016-01-25  Richard Biener  <rguenther@suse.de>

        PR testsuite/69380
        * g++.dg/tree-ssa/pr69336.C: Restrict to x86_64 and i?86.