[PATCH] D31679: Support PMADDWD and PMADDUBSW

[Dehao Chen via Phabricator via llvm-commits]

danielcdh created this revision.

PMADDWD and PMADDUBSW can help improve 8/16 bit integer mutliply-add operation performance.


https://reviews.llvm.org/D31679

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/madd.ll

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