[LLVMbugs] [Bug 20443] LLVM does not properly produce vectorized zextload instructions

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Mar 12 05:37:14 PDT 2015


Michael Kuperstein <michael.m.kuperstein at intel.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
                 CC|                            |michael.m.kuperstein at intel.
                   |                            |com
         Resolution|---                         |FIXED

--- Comment #2 from Michael Kuperstein <michael.m.kuperstein at intel.com> ---
Not sure which of the shuffle changes actually fixed this, but currently top of
trunk does the right thing for the attached example:

movq    56(%rsp), %rax
pmovzxbd        (%rax), %xmm0   # xmm0 =
movdqa  %xmm0, 32(%rsp)

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