[Bug target/120870] [16/17 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

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
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  Attachment #61837|0                           |1
        is obsolete|                            |

--- Comment #42 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 64419
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64419&action=edit
An updated patch

I am testing this.