[PATCH] D120435: [X86] Combine ADC(ADD(X,Y),0,Carry) -> ADC(X,Y,Carry)

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added inline comments.
Herald added a subscriber: StephenFan.
Herald added a project: All.


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Comment at: llvm/lib/Target/X86/X86ISelLowering.cpp:52156
+  if (LHS.getOpcode() == ISD::ADD && isNullConstant(RHS) &&
+      !N->hasAnyUseOfValue(1))
+    return DAG.getNode(X86ISD::ADC, SDLoc(N), N->getVTList(), LHS.getOperand(0),
----------------
OneUseCheck of Add?

@RKSimon


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D120435/new/

https://reviews.llvm.org/D120435