[Bug tree-optimization/80622] [8 Regression] wrong code at -O1 and above in both 32-bit and 64-bit modes on x86_64-linux-gnu

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80622

--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> ---
(In reply to Martin Jambor from comment #6)
> The simplest fix is the following, but I'll move the whole test a bit
> earlier in a patch to the mailing list:

Which is now posted at
https://gcc.gnu.org/ml/gcc-patches/2017-05/msg00306.html