[Bug tree-optimization/105558] simple 8-bit integer calculation fails with -O3 / march=core-avx2 on some gfortran 8/9/10 versions

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105558

--- Comment #9 from Sam James <sjames at gcc dot gnu.org> ---
I can bisect it if someone gives me a case which aborts with the wrong value.