C++ ConstantSDNode::getValueType方法代码示例

本文整理汇总了C++中ConstantSDNode::getValueType方法的典型用法代码示例。如果您正苦于以下问题：C++ ConstantSDNode::getValueType方法的具体用法？C++ ConstantSDNode::getValueType怎么用？C++ ConstantSDNode::getValueType使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ConstantSDNode的用法示例。

在下文中一共展示了ConstantSDNode::getValueType方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: SelectInlineAsmMemoryOperand

/// SelectInlineAsmMemoryOperand - Implement addressing mode selection for
/// inline asm expressions.
bool AVRDAGToDAGISel::SelectInlineAsmMemoryOperand(const SDValue &Op,
                                                   char ConstraintCode,
                                                   std::vector<SDValue> &OutOps)
{
  // Yes hardcoded 'm' symbol. Just because it also has been hardcoded in
  // SelectionDAGISel (callee for this method).
  assert(ConstraintCode == 'm' && "Unexpected asm memory constraint");

  //MachineFunction& MF = CurDAG->getMachineFunction();
  MachineRegisterInfo &RI = MF->getRegInfo();
  const TargetLowering* TL = MF->getTarget().getTargetLowering();

  const RegisterSDNode *RegNode = dyn_cast<RegisterSDNode>(Op);

  // If address operand is of PTRDISPREGS class, all is OK, then.

  if (RegNode && RI.getRegClass(RegNode->getReg()) ==
      &AVR::PTRDISPREGSRegClass)
  {
    OutOps.push_back(Op);
    return false;
  }

  if (Op->getOpcode() == ISD::FrameIndex)
  {
    SDValue Base, Disp;
    if (SelectAddr(Op.getNode(), Op, Base, Disp))
    {
      OutOps.push_back(Base);
      OutOps.push_back(Disp);

      return false;
    }

    return true;
  }

  // If Op is add reg, imm and
  // reg is either virtual register or register of PTRDISPREGSRegClass
  if (Op->getOpcode() == ISD::ADD ||
      Op->getOpcode() == ISD::SUB)
  {
    SDValue CopyFromRegOp = Op->getOperand(0);
    SDValue ImmOp = Op->getOperand(1);
    ConstantSDNode *ImmNode = dyn_cast<ConstantSDNode>(ImmOp);

    unsigned Reg;

    bool CanHandleRegImmOpt = true;

    CanHandleRegImmOpt &= ImmNode != 0;
    CanHandleRegImmOpt &= ImmNode->getAPIntValue().getZExtValue() < 64;

    if (CopyFromRegOp->getOpcode() == ISD::CopyFromReg)
    {
      RegisterSDNode *RegNode =
          cast<RegisterSDNode>(CopyFromRegOp->getOperand(1));
      Reg = RegNode->getReg();
      CanHandleRegImmOpt &= (TargetRegisterInfo::isVirtualRegister(Reg) ||
                             AVR::PTRDISPREGSRegClass.contains(Reg));
    }
    else
    {
      CanHandleRegImmOpt = false;
    }

    if (CanHandleRegImmOpt)
    {
      // If we detect proper case - correct virtual register class
      // if needed and go to another inlineasm operand.

      SDValue Base, Disp;

      if (RI.getRegClass(Reg)
          != &AVR::PTRDISPREGSRegClass)
      {
        SDLoc dl(CopyFromRegOp);

        unsigned VReg = RI.createVirtualRegister(
            &AVR::PTRDISPREGSRegClass);

        SDValue CopyToReg = CurDAG->getCopyToReg(CopyFromRegOp, dl,
                                                 VReg, CopyFromRegOp);

        SDValue NewCopyFromRegOp =
            CurDAG->getCopyFromReg(CopyToReg, dl, VReg, TL->getPointerTy());

        Base = NewCopyFromRegOp;
      }
      else
      {
        Base = CopyFromRegOp;
      }

      if (ImmNode->getValueType(0) != MVT::i8)
      {
        Disp = CurDAG->getTargetConstant(
            ImmNode->getAPIntValue().getZExtValue(), MVT::i8);
//.........这里部分代码省略.........

开发者ID:enascimento，项目名称:llvm-avr，代码行数:101，代码来源:AVRISelDAGToDAG.cpp

示例2: SelectInlineAsmMemoryOperand

bool AVRDAGToDAGISel::SelectInlineAsmMemoryOperand(const SDValue &Op,
                                                   unsigned ConstraintCode,
                                                   std::vector<SDValue> &OutOps) {
  assert((ConstraintCode == InlineAsm::Constraint_m ||
         ConstraintCode == InlineAsm::Constraint_Q) &&
      "Unexpected asm memory constraint");

  MachineRegisterInfo &RI = MF->getRegInfo();
  const AVRSubtarget &STI = MF->getSubtarget<AVRSubtarget>();
  const TargetLowering &TL = *STI.getTargetLowering();
  SDLoc dl(Op);
  auto DL = CurDAG->getDataLayout();

  const RegisterSDNode *RegNode = dyn_cast<RegisterSDNode>(Op);

  // If address operand is of PTRDISPREGS class, all is OK, then.
  if (RegNode &&
      RI.getRegClass(RegNode->getReg()) == &AVR::PTRDISPREGSRegClass) {
    OutOps.push_back(Op);
    return false;
  }

  if (Op->getOpcode() == ISD::FrameIndex) {
    SDValue Base, Disp;

    if (SelectAddr(Op.getNode(), Op, Base, Disp)) {
      OutOps.push_back(Base);
      OutOps.push_back(Disp);

      return false;
    }

    return true;
  }

  // If Op is add 'register, immediate' and
  // register is either virtual register or register of PTRDISPREGSRegClass
  if (Op->getOpcode() == ISD::ADD || Op->getOpcode() == ISD::SUB) {
    SDValue CopyFromRegOp = Op->getOperand(0);
    SDValue ImmOp = Op->getOperand(1);
    ConstantSDNode *ImmNode = dyn_cast<ConstantSDNode>(ImmOp);

    unsigned Reg;
    bool CanHandleRegImmOpt = true;

    CanHandleRegImmOpt &= ImmNode != 0;
    CanHandleRegImmOpt &= ImmNode->getAPIntValue().getZExtValue() < 64;

    if (CopyFromRegOp->getOpcode() == ISD::CopyFromReg) {
      RegisterSDNode *RegNode =
          cast<RegisterSDNode>(CopyFromRegOp->getOperand(1));
      Reg = RegNode->getReg();
      CanHandleRegImmOpt &= (TargetRegisterInfo::isVirtualRegister(Reg) ||
                             AVR::PTRDISPREGSRegClass.contains(Reg));
    } else {
      CanHandleRegImmOpt = false;
    }

    // If we detect proper case - correct virtual register class
    // if needed and go to another inlineasm operand.
    if (CanHandleRegImmOpt) {
      SDValue Base, Disp;

      if (RI.getRegClass(Reg) != &AVR::PTRDISPREGSRegClass) {
        SDLoc dl(CopyFromRegOp);

        unsigned VReg = RI.createVirtualRegister(&AVR::PTRDISPREGSRegClass);

        SDValue CopyToReg =
            CurDAG->getCopyToReg(CopyFromRegOp, dl, VReg, CopyFromRegOp);

        SDValue NewCopyFromRegOp =
            CurDAG->getCopyFromReg(CopyToReg, dl, VReg, TL.getPointerTy(DL));

        Base = NewCopyFromRegOp;
      } else {
        Base = CopyFromRegOp;
      }

      if (ImmNode->getValueType(0) != MVT::i8) {
        Disp = CurDAG->getTargetConstant(ImmNode->getAPIntValue().getZExtValue(), dl, MVT::i8);
      } else {
        Disp = ImmOp;
      }

      OutOps.push_back(Base);
      OutOps.push_back(Disp);

      return false;
    }
  }

  // More generic case.
  // Create chain that puts Op into pointer register
  // and return that register.
  unsigned VReg = RI.createVirtualRegister(&AVR::PTRDISPREGSRegClass);

  SDValue CopyToReg = CurDAG->getCopyToReg(Op, dl, VReg, Op);
  SDValue CopyFromReg =
      CurDAG->getCopyFromReg(CopyToReg, dl, VReg, TL.getPointerTy(DL));
//.........这里部分代码省略.........

开发者ID:jamboree，项目名称:llvm，代码行数:101，代码来源:AVRISelDAGToDAG.cpp

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