[PATCH] D63141: [DAGCombine] GetNegatedExpression - add FMA\FMAD support

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

In D63141#1641307 <https://reviews.llvm.org/D63141#1641307>, @arsenm wrote:

> Should this also remove the AMDGPU version?


The problem we currently have is that AMDGPUTargetLowering::performFNegCombine allows multiple uses of the FMA/FMAD but the DAGCombine doesn't, so I'm going to suggest we wait until PR42863 to handle that.


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  rL LLVM

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