[llvm] [X86] Match SETCC_CARRY in addition of SUB when trying to reconstruct LEA (PR #126551)

[Phoebe Wang via llvm-commits]

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@@ -51985,21 +51985,30 @@ static SDValue combineOr(SDNode *N, SelectionDAG &DAG,
     return R;
 
   // (0 - SetCC) | C -> (zext (not SetCC)) * (C + 1) - 1 if we can get a LEA out of it.
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phoebewang wrote:

Update comments for SETCC_CARRY?

https://github.com/llvm/llvm-project/pull/126551