[PATCH] D45651: [X86] Add DAG combine to turn (trunc (srl (mul ext, ext), 16) into PMULHW/PMULHUW.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: RKSimon, spatel.

Ultimately I want to use this to remove the intrinsics for these instructions.


Repository:
  rL LLVM

https://reviews.llvm.org/D45651

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

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