[llvm] [SelectionDAG] Introduce ISD::PTRADD (PR #140017)

[Fabian Ritter via llvm-commits]

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@@ -1729,6 +1734,10 @@ inline bool isExtVecInRegOpcode(unsigned Opcode) {
          Opcode == ISD::SIGN_EXTEND_VECTOR_INREG;
 }
 
+inline bool isPtrAdd(unsigned Opcode) {
+  return (Opcode == ISD::ADD) || (Opcode == ISD::PTRADD);
+}
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ritter-x2a wrote:

Moved it to SDNode/SDValue like `isUndef`, and renamed it to `isAnyAdd` (as that name captures the semantics best to me).

https://github.com/llvm/llvm-project/pull/140017