[PATCH] D118362: [DAGCombine] Extend and refactor combineCarryDiamond()

[Paweł Bylica via Phabricator via llvm-commits]

chfast added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:3079
+  if (Carry1.getNode()->isOperandOf(Carry0.getNode()))
     std::swap(Carry0, Carry1);
+
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RKSimon wrote:
> Do we need this change to get the codegen diff? Or is it just from the getAsCarry? If so we probably want to split the changes for clarity - one as cleanup and the other as improvement?
The usage of `isOperandOf` is only esthetics. I should commit it separately. Does it need another review?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D118362/new/

https://reviews.llvm.org/D118362