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Commit 268b3abe authored by Craig Topper's avatar Craig Topper
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[X86][InstCombine] Teach SimplifyDemandedVectorElts to handle masked scalar... 

[X86][InstCombine] Teach SimplifyDemandedVectorElts to handle masked scalar add/sub/mul/div/max/min intrinsics better.

Now we can remove these intrinsics if element 0 isn't used. Also fix undef element tracking.

llvm-svn: 289636
parent dfd268d7
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