[Bug target/58945] Improve atomic_compare_and_swap*_doubleword pattern

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58945

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #6)

> Register allocators can't allocate reg 97 to "b" and "c" constraint:
>
> So, a fwprop bug?

Adding an expert to CC.