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[X86][AVX] Enable shuffle combining support for zero_extend
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Tue, 12 Feb 2019 17:22:35 +0000 (17:22 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Tue, 12 Feb 2019 17:22:35 +0000 (17:22 +0000)
commit1fcc05880eb106562929885857f55f558dc2a36e
tree0133d7fc467608d6e348fc04bf27e09f989b9494
parent51dad635adaf53f3e5d2d563fccbe786244de7f7
[X86][AVX] Enable shuffle combining support for zero_extend

A more limited version of rL352997 that had to be disabled in rL353198 - allow extension of any 128/256/512 bit vector that at least uses byte sized scalars.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353860 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp
test/CodeGen/X86/vector-shuffle-256-v8.ll