[PATCH] D129666: [SDAG] Remove single-result restriction on commutative CSE

[Itay Bookstein via Phabricator via llvm-commits]

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The DAG Combiner unnecessarily restricts commutative CSE
to nodes with a single result value. This commit removes
that restriction.

Signed-off-by: Itay Bookstein <ibookstein at gmail.com>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D129666

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/X86/dagcombine-multiple-results.ll
  llvm/test/CodeGen/X86/smul-with-overflow.ll
  llvm/test/CodeGen/X86/smulo-128-legalisation-lowering.ll

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