[llvm] [DAG] Generalize fold (not (neg x)) -> (add X, -1) (PR #154348)

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github-actions[bot] wrote:

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 709c4293c..320e81b8f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -9988,12 +9988,14 @@ SDValue DAGCombiner::visitXOR(SDNode *N) {
     }
   }
 
-  // fold (not (sub Y, X)) -> (add X, ~Y) if Y is a constant or the subtract has a single use.
+  // fold (not (sub Y, X)) -> (add X, ~Y) if Y is a constant or the subtract has
+  // a single use.
   if (isAllOnesConstant(N1) && N0.getOpcode() == ISD::SUB) {
     SDValue Y = N0.getOperand(0);
     SDValue X = N0.getOperand(1);
     if (isa<ConstantSDNode>(Y) || N0.hasOneUse()) {
-      SDValue NotY = DAG.getNode(ISD::XOR, DL, VT, Y, DAG.getAllOnesConstant(DL, VT));
+      SDValue NotY =
+          DAG.getNode(ISD::XOR, DL, VT, Y, DAG.getAllOnesConstant(DL, VT));
       return DAG.getNode(ISD::ADD, DL, VT, X, NotY);
     }
   }

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https://github.com/llvm/llvm-project/pull/154348