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Commit 23ebd956 authored by Craig Topper's avatar Craig Topper
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[X86][InstCombine] Add support for scalar FMA intrinsics to SimplifyDemandedVectorElts. 

This teaches SimplifyDemandedElts that the FMA can be removed if the lower element isn't used. It also teaches it that if upper elements of the first operand aren't used then we can simplify them.

llvm-svn: 289377
parent 1c002267
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