[DAG] Avoid APInt copies by directly using the APInt reference from getAPIntValue...

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index eae4c4a..6fd14a3 100644 (file)
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5315,8 +5315,8 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
     assert(N1.getValueType() == N2.getValueType() &&
            N1.getValueType() == VT && "Binary operator types must match!");
     if (N2C && (N1.getOpcode() == ISD::VSCALE) && Flags.hasNoSignedWrap()) {
-      APInt MulImm = cast<ConstantSDNode>(N1->getOperand(0))->getAPIntValue();
-      APInt N2CImm = N2C->getAPIntValue();
+      const APInt &MulImm = N1->getConstantOperandAPInt(0);
+      const APInt &N2CImm = N2C->getAPIntValue();
       return getVScale(DL, VT, MulImm * N2CImm);
     }
     break;
@@ -5369,8 +5369,8 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
     break;
   case ISD::SHL:
     if (N2C && (N1.getOpcode() == ISD::VSCALE) && Flags.hasNoSignedWrap()) {
-      APInt MulImm = cast<ConstantSDNode>(N1->getOperand(0))->getAPIntValue();
-      APInt ShiftImm = N2C->getAPIntValue();
+      const APInt &MulImm = N1->getConstantOperandAPInt(0);
+      const APInt &ShiftImm = N2C->getAPIntValue();
       return getVScale(DL, VT, MulImm << ShiftImm);
     }
     LLVM_FALLTHROUGH;