[llvm] r335773 - [DAGCombine] Disable TokenFactor simplifications when optnone.

[Roman Lebedev via llvm-commits]

Test?

On Wed, Jun 27, 2018 at 10:41 PM, Nirav Dave via llvm-commits
<llvm-commits at lists.llvm.org> wrote:
> Author: niravd
> Date: Wed Jun 27 12:41:25 2018
> New Revision: 335773
>
> URL: http://llvm.org/viewvc/llvm-project?rev=335773&view=rev
> Log:
> [DAGCombine] Disable TokenFactor simplifications when optnone.
>
> Modified:
>     llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp?rev=335773&r1=335772&r2=335773&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Wed Jun 27 12:41:25 2018
> @@ -1692,6 +1692,10 @@ SDValue DAGCombiner::visitTokenFactor(SD
>        return N->getOperand(1);
>    }
>
> +  // Don't simplify token factors if optnone.
> +  if (OptLevel == CodeGenOpt::None)
> +    return SDValue();
> +
>    SmallVector<SDNode *, 8> TFs;     // List of token factors to visit.
>    SmallVector<SDValue, 8> Ops;      // Ops for replacing token factor.
>    SmallPtrSet<SDNode*, 16> SeenOps;
>
>
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