https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78041

--- Comment #17 from wilco at gcc dot gnu.org ---
(In reply to Bernd Edlinger from comment #15)
> FYI: You could merge the two alternatives into one.
> 
> =?r,?&r
>   0,  r
>   i,  i
> 
> is equivalent to
> 
> =?&r
>   0r
>   i

Yes, that seems possible. These patterns will need to be changed significantly
to fix PR 77308, so this can be done as part of that work.

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