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Chandler Carruth
30ce74b5e3
[x86] Teach the new vector shuffle lowering to lower v4i64 vector
shuffles using the AVX2 instructions. This is the first step of cutting in real AVX2 support. Note that I have spotted at least one bug in the test cases already, but I suspect it was already present and just is getting surfaced. Will investigate next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218338 91177308-0d34-0410-b5e6-96231b3b80d8
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