[Bug target/122552] RISC-V: Cannot combine vector shift like vsll.vv to vsll.vx

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122552

Robin Dapp <rdapp at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
           Severity|normal                      |enhancement
   Last reconfirmed|                            |2025-11-04
     Ever confirmed|0                           |1

--- Comment #1 from Robin Dapp <rdapp at gcc dot gnu.org> ---
Confirmed, thanks Pan.

One option is to expand to a vector-vector shift right away and let late
combine work on that vector-vector shift.  At that point we can go back to a
vector-scalar version.