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Commit 2c0a62ab authored by Craig Topper's avatar Craig Topper
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[X86] Add a DAG combine to simplify PMULDQ/PMULUDQ nodes 

These nodes only use the lower 32 bits of their inputs so we can use SimplifyDemandedBits to simplify them.

Differential Revision: https://reviews.llvm.org/D44375

llvm-svn: 328405
parent 8ce0ab39
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