[Bug target/120870] [16 regression] CPython miscompiled with preserve_none and CFLAGS="-O2 -march=znver2 -ggdb3"

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120870

--- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Sam James from comment #10)
> Created attachment 61824 [details]
> ceval.i.xz
> 
> ceval.o is broken.
> 
> ```
> $ gcc -c -fno-strict-overflow -O2 -mavx -mtune=znver2 -std=c11
> -fvisibility=hidden -fprofile-generate /tmp/ceval.i -o Python/ceval.o
> ```

$ ./configure --with-tail-call-interp CFLAGS="-O2 -march=znver2 -ggdb3"

also failed to build.  -fprofile-generate isn't needed.