[PATCH] D41811: X86: Add pattern matching for PMADDWD

[Zvi Rackover via Phabricator via llvm-commits]

zvi updated this revision to Diff 129590.
zvi added a comment.

Check both BUILD_VECTOR nodes together if one is composed of odd indexed extracts and the other composed of even idexed extracts.


https://reviews.llvm.org/D41811

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

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