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

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

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

--- Comment #10 from Sam James <sjames at gcc dot gnu.org> ---
Created attachment 61824
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61824&action=edit
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
```