[Bug target/86828] [7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86828

--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to janus from comment #13)
> (In reply to H.J. Lu from comment #12)
> > Which glibc are you using?
> 
> Same as reported in PR86735:
> * Ubuntu 18.04, kernel 4.15.0
> * Intel(R) Core(TM) i9-7980XE CPU
> * glibc 2.27, binutils 2.30

Please try kernel 4.17.xx or above.