[Bug tree-optimization/121256] [13/14/15/16 regression] ffmpeg miscompiled with -O2 -march=znver2

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121256

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Sam James from comment #0)
> ```
> $ gcc huffyuvenc.c -O1 -march=znver2 -o huffyuvenc
> $ ./huffyuvenc
> Aborted                    (core dumped) ./huffyuvenc

Sorry, it's fine at -O1, fails at -O2. Mispasted.