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Commit 600f1ba3 authored by Craig Topper's avatar Craig Topper
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[X86] Don't zero the upper bits of the k-register before extracting a single bit from a vXi1. 

This doesn't match the semantics of the extract_vector_elt operation. Nothing downstream knows the bits were zeroed so they still get masked or sign extended after the extrat anyway.

llvm-svn: 320723
parent 708c9f59
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