[LLVMbugs] [Bug 12412] shufflevector should use pack instructions in some cases

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Dec 30 14:22:55 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 #1 from Simon Pilgrim <llvm-dev at redking.me.uk> ---
Fixed in ToT with the new shuffle lowering:

movdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
pand %xmm2, %xmm1
pand %xmm2, %xmm0
packuswb %xmm1, %xmm0

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