[LLVMbugs] [Bug 13239] optimizer and code generator do not generate vector shuffle instructions but a lot of inserts and extracts

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Dec 17 14:06:10 PST 2014


Simon Pilgrim <llvm-dev at redking.me.uk> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
                 CC|                            |llvm-dev at redking.me.uk
         Resolution|---                         |FIXED

--- Comment #2 from Simon Pilgrim <llvm-dev at redking.me.uk> ---
Fixed by r224429

    .globl    __fun1
    .align    4, 0x90
__fun1:                                 ## @_fun1
## BB#0:                                ## %_L1
    vmovaps    (%rdi), %ymm0
    vextractf128    $1, %ymm0, %xmm1
    vpabsd    %xmm0, %xmm0
    vpshufd    $68, %xmm1, %xmm1       ## xmm1 = xmm1[0,1,0,1]
    vpabsd    %xmm1, %xmm1
    vmovq    %xmm1, %xmm1
    vmovdqa    %xmm0, (%rdi)
    vmovq    %xmm1, 16(%rdi)

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