[Bug target/123839] riscv: Optimize constant permute to slidedown + slideup.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123839

Jeffrey A. Law <law at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2026-02-06
                 CC|                            |rdapp at gcc dot gnu.org