[PATCH] D56987: [Intrinsic] Expand vector SMULFIX to MUL on zero scale

[Leonard Chan via Phabricator via llvm-commits]

leonardchan created this revision.
leonardchan added reviewers: ebevhan, bjope, RKSimon, craig.topper.
Herald added a subscriber: hiraditya.

For zero scale SMULFIX, expand into MUL which produces better code for X86.


Repository:
  rL LLVM

https://reviews.llvm.org/D56987

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/test/CodeGen/X86/smul_fix.ll

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