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Commit ebabd79f authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] canReduceVMulWidth - use ComputeNumSignBits/SignBitIsZero directly 

Don't reinvent the wheel for BUILD_VECTOR/ZERO_EXTEND - its only the ANY_EXTEND special case that needs handling.

llvm-svn: 343096
parent 5d6f3d9f
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