remove unnecessary TLI override

Author: Prince781

llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp

@@ -3137,13 +3137,6 @@ bool NVPTXTargetLowering::splitValueIntoRegisterParts(
   return false;
 }
 
-const TargetRegisterClass *
-NVPTXTargetLowering::getRegClassFor(MVT VT, bool isDivergent) const {
-  if (VT == MVT::v2f32)
-    return &NVPTX::Int64RegsRegClass;
-  return TargetLowering::getRegClassFor(VT, isDivergent);
-}
-
 // This creates target external symbol for a function parameter.
 // Name of the symbol is composed from its index and the function name.
 // Negative index corresponds to special parameter (unsized array) used for

llvm/lib/Target/NVPTX/NVPTXISelLowering.h

@@ -315,9 +315,6 @@ class NVPTXTargetLowering : public TargetLowering {
                               SDValue *Parts, unsigned NumParts, MVT PartVT,
                               std::optional<CallingConv::ID> CC) const override;
 
-  const TargetRegisterClass *getRegClassFor(MVT VT,
-                                            bool isDivergent) const override;
-
   void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue> &Results,
                           SelectionDAG &DAG) const override;
   SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const override;