R600/SI: Custom select 64-bit ADD

llvm-svn: 202194

1 files changed, 0 insertions, 29 deletions

diff --git a/llvm/lib/Target/R600/SIISelLowering.cpp b/llvm/lib/Target/R600/SIISelLowering.cpp
index 9b6c4f4ed85..e1256415309 100644
--- a/llvm/lib/Target/R600/SIISelLowering.cpp
+++ b/llvm/lib/Target/R600/SIISelLowering.cpp
@@ -76,7 +76,6 @@ SITargetLowering::SITargetLowering(TargetMachine &TM) :
   setOperationAction(ISD::VECTOR_SHUFFLE, MVT::v16i32, Expand);
   setOperationAction(ISD::VECTOR_SHUFFLE, MVT::v16f32, Expand);
 
-  setOperationAction(ISD::ADD, MVT::i64, Legal);
   setOperationAction(ISD::ADD, MVT::i32, Legal);
   setOperationAction(ISD::ADDC, MVT::i32, Legal);
   setOperationAction(ISD::ADDE, MVT::i32, Legal);
@@ -488,7 +487,6 @@ SDValue SITargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
   SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
   switch (Op.getOpcode()) {
   default: return AMDGPUTargetLowering::LowerOperation(Op, DAG);
-  case ISD::ADD: return LowerADD(Op, DAG);
   case ISD::BRCOND: return LowerBRCOND(Op, DAG);
   case ISD::LOAD: {
     LoadSDNode *Load = dyn_cast<LoadSDNode>(Op);
@@ -628,33 +626,6 @@ SDValue SITargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
   return SDValue();
 }
 
-SDValue SITargetLowering::LowerADD(SDValue Op,
-                                   SelectionDAG &DAG) const {
-  if (Op.getValueType() != MVT::i64)
-    return SDValue();
-
-  SDLoc DL(Op);
-  SDValue LHS = Op.getOperand(0);
-  SDValue RHS = Op.getOperand(1);
-
-  SDValue Zero = DAG.getConstant(0, MVT::i32);
-  SDValue One = DAG.getConstant(1, MVT::i32);
-
-  SDValue Lo0 = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, LHS, Zero);
-  SDValue Hi0 = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, LHS, One);
-
-  SDValue Lo1 = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, RHS, Zero);
-  SDValue Hi1 = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, RHS, One);
-
-  SDVTList VTList = DAG.getVTList(MVT::i32, MVT::Glue);
-
-  SDValue AddLo = DAG.getNode(ISD::ADDC, DL, VTList, Lo0, Lo1);
-  SDValue Carry = AddLo.getValue(1);
-  SDValue AddHi = DAG.getNode(ISD::ADDE, DL, VTList, Hi0, Hi1, Carry);
-
-  return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, AddLo, AddHi.getValue(0));
-}
-
 /// \brief Helper function for LowerBRCOND
 static SDNode *findUser(SDValue Value, unsigned Opcode) {