[LLVMbugs] [Bug 14590] X86: Need to implement efficient vector sign-extend load.

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sat Dec 22 03:35:11 PST 2012


Benjamin Kramer <benny.kra at gmail.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
                 CC|                            |benny.kra at gmail.com
         Resolution|                            |FIXED

--- Comment #2 from Benjamin Kramer <benny.kra at gmail.com> 2012-12-22 05:35:11 CST ---
With r170984 we emit:
    movq    (%rdi), %xmm0
    punpcklwd    %xmm0, %xmm0    ## xmm0 = xmm0[0,0,1,1,2,2,3,3]
    psrad    $16, %xmm0

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