https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119702

--- Comment #18 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Surya Kumari Jangala from comment #16)
> With the testcase in the "Description", we are seeing both a splat and a
> shift being generated. Instead, a single add instruction is more efficient.

Exactly, with the code around it, an addition works best here.  A "shift
immediate" would be fine as well, but that insn doesn't exist.

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