[Bug target/95894] vector shift by lane zero generates inter unit move

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95894

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-* i?86-*-*
           Keywords|                            |missed-optimization

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
clang generates

        xorps   %xmm1, %xmm1
        movss   %xmm0, %xmm1            # xmm1 = xmm0[0],xmm1[1,2,3]
        pslld   %xmm1, %xmm0