[LegalizeTypes] Combine PromoteIntRes_VECTOR_DEINTERLEAVE and PromoteIntRes_VECTOR_INTERLEAVE. NFC

[craig.topper]

Summary

The functions are identical except for the opcode of the node.
We can have a single function and use N->getOpcode().

[luke]

LGTM

llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp

#endif
   case ISD::INSERT_SUBVECTOR:
                          Res = PromoteIntRes_INSERT_SUBVECTOR(N); break;
   case ISD::VECTOR_REVERSE:
                          Res = PromoteIntRes_VECTOR_REVERSE(N); break;
   case ISD::VECTOR_SHUFFLE:
                          Res = PromoteIntRes_VECTOR_SHUFFLE(N); break;
   case ISD::VECTOR_SPLICE:
                          Res = PromoteIntRes_VECTOR_SPLICE(N); break;
-  case ISD::VECTOR_DEINTERLEAVE:
-    Res = PromoteIntRes_VECTOR_DEINTERLEAVE(N);
-    return;
   case ISD::VECTOR_INTERLEAVE:
-    Res = PromoteIntRes_VECTOR_INTERLEAVE(N);
+  case ISD::VECTOR_DEINTERLEAVE:
+    Res = PromoteIntRes_VECTOR_INTERLEAVE_DEINTERLEAVE(N);
     return;
   case ISD::INSERT_VECTOR_ELT:
                          Res = PromoteIntRes_INSERT_VECTOR_ELT(N); break;
   case ISD::BUILD_VECTOR:
     Res = PromoteIntRes_BUILD_VECTOR(N);
     break;
   case ISD::SPLAT_VECTOR:
   case ISD::SCALAR_TO_VECTOR:
SDValue DAGTypeLegalizer::PromoteIntRes_VECTOR_SPLICE(SDNode *N) {
 
   SDValue V0 = GetPromotedInteger(N->getOperand(0));
   SDValue V1 = GetPromotedInteger(N->getOperand(1));
   EVT OutVT = V0.getValueType();
 
   return DAG.getNode(ISD::VECTOR_SPLICE, dl, OutVT, V0, V1, N->getOperand(2));
 }
 
-SDValue DAGTypeLegalizer::PromoteIntRes_VECTOR_DEINTERLEAVE(SDNode *N) {
+SDValue DAGTypeLegalizer::PromoteIntRes_VECTOR_INTERLEAVE_DEINTERLEAVE(SDNode *N) {
   SDLoc dl(N);
 
   SDValue V0 = GetPromotedInteger(N->getOperand(0));
   SDValue V1 = GetPromotedInteger(N->getOperand(1));
   EVT ResVT = V0.getValueType();
-  SDValue Res = DAG.getNode(ISD::VECTOR_DEINTERLEAVE, dl,
-                            DAG.getVTList(ResVT, ResVT), V0, V1);
-  SetPromotedInteger(SDValue(N, 0), Res.getValue(0));
-  SetPromotedInteger(SDValue(N, 1), Res.getValue(1));
-  return SDValue();
-}
-
-SDValue DAGTypeLegalizer::PromoteIntRes_VECTOR_INTERLEAVE(SDNode *N) {
-  SDLoc dl(N);
-
-  SDValue V0 = GetPromotedInteger(N->getOperand(0));
-  SDValue V1 = GetPromotedInteger(N->getOperand(1));
-
-  EVT ResVT = V0.getValueType();
-  SDValue Res = DAG.getNode(ISD::VECTOR_INTERLEAVE, dl,
+  SDValue Res = DAG.getNode(N->getOpcode(), dl,
                             DAG.getVTList(ResVT, ResVT), V0, V1);
   SetPromotedInteger(SDValue(N, 0), Res.getValue(0));
   SetPromotedInteger(SDValue(N, 1), Res.getValue(1));
   return SDValue();
 }
 
 SDValue DAGTypeLegalizer::PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N) {
 

llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h

private:
   SDValue PromoteIntRes_Atomic0(AtomicSDNode *N);
   SDValue PromoteIntRes_Atomic1(AtomicSDNode *N);
   SDValue PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N, unsigned ResNo);
   SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N);
   SDValue PromoteIntRes_INSERT_SUBVECTOR(SDNode *N);
   SDValue PromoteIntRes_VECTOR_REVERSE(SDNode *N);
   SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N);
   SDValue PromoteIntRes_VECTOR_SPLICE(SDNode *N);
-  SDValue PromoteIntRes_VECTOR_DEINTERLEAVE(SDNode *N);
-  SDValue PromoteIntRes_VECTOR_INTERLEAVE(SDNode *N);
+  SDValue PromoteIntRes_VECTOR_INTERLEAVE_DEINTERLEAVE(SDNode *N);
   SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N);
   SDValue PromoteIntRes_ScalarOp(SDNode *N);
   SDValue PromoteIntRes_STEP_VECTOR(SDNode *N);
   SDValue PromoteIntRes_EXTEND_VECTOR_INREG(SDNode *N);
   SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N);
   SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N);
   SDValue PromoteIntRes_BITCAST(SDNode *N);
   SDValue PromoteIntRes_BSWAP(SDNode *N);