[PATCH] D96673: [GlobalISel] Implement narrowScalar for SADDE/SSUBE/UADDE/USUBE

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp:4511
     CarryDst = MI.getOperand(1).getReg();
+  Optional<Register> CarryIn = None;
+  if (MI.getNumOperands() >= NumDefs + 3)
----------------
No Optional


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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D96673/new/

https://reviews.llvm.org/D96673