[Bug target/98697] shl not vectorized for v16qi and v8hi with MVE

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98697

--- Comment #2 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Why would this be different from right shift, where we don't miss the
optimization?