C++ MipsFunctionInfo::createEhDataRegsFI方法代码示例

本文整理汇总了C++中MipsFunctionInfo::createEhDataRegsFI方法的典型用法代码示例。如果您正苦于以下问题：C++ MipsFunctionInfo::createEhDataRegsFI方法的具体用法？C++ MipsFunctionInfo::createEhDataRegsFI怎么用？C++ MipsFunctionInfo::createEhDataRegsFI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MipsFunctionInfo的用法示例。

在下文中一共展示了MipsFunctionInfo::createEhDataRegsFI方法的3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: estimateStackSize

void MipsSEFrameLowering::
processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
                                     RegScavenger *RS) const {
  MachineRegisterInfo &MRI = MF.getRegInfo();
  MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
  unsigned FP = STI.isABI_N64() ? Mips::FP_64 : Mips::FP;

  // Mark $fp as used if function has dedicated frame pointer.
  if (hasFP(MF))
    MRI.setPhysRegUsed(FP);

  // Create spill slots for eh data registers if function calls eh_return.
  if (MipsFI->callsEhReturn())
    MipsFI->createEhDataRegsFI();

  // Set scavenging frame index if necessary.
  uint64_t MaxSPOffset = MF.getInfo<MipsFunctionInfo>()->getIncomingArgSize() +
    estimateStackSize(MF);

  if (isInt<16>(MaxSPOffset))
    return;

  const TargetRegisterClass *RC = STI.isABI_N64() ?
    &Mips::CPU64RegsRegClass : &Mips::CPURegsRegClass;
  int FI = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
                                                RC->getAlignment(), false);
  RS->addScavengingFrameIndex(FI);
}

开发者ID:drexler，项目名称:llvm，代码行数:28，代码来源:MipsSEFrameLowering.cpp

示例2: determineCalleeSaves

void MipsSEFrameLowering::determineCalleeSaves(MachineFunction &MF,
                                               BitVector &SavedRegs,
                                               RegScavenger *RS) const {
  TargetFrameLowering::determineCalleeSaves(MF, SavedRegs, RS);
  MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
  MipsABIInfo ABI = STI.getABI();
  unsigned FP = ABI.GetFramePtr();
  unsigned BP = ABI.IsN64() ? Mips::S7_64 : Mips::S7;

  // Mark $fp as used if function has dedicated frame pointer.
  if (hasFP(MF))
    setAliasRegs(MF, SavedRegs, FP);
  // Mark $s7 as used if function has dedicated base pointer.
  if (hasBP(MF))
    setAliasRegs(MF, SavedRegs, BP);

  // Create spill slots for eh data registers if function calls eh_return.
  if (MipsFI->callsEhReturn())
    MipsFI->createEhDataRegsFI();

  // Create spill slots for Coprocessor 0 registers if function is an ISR.
  if (MipsFI->isISR())
    MipsFI->createISRRegFI();

  // Expand pseudo instructions which load, store or copy accumulators.
  // Add an emergency spill slot if a pseudo was expanded.
  if (ExpandPseudo(MF).expand()) {
    // The spill slot should be half the size of the accumulator. If target is
    // mips64, it should be 64-bit, otherwise it should be 32-bt.
    const TargetRegisterClass *RC = STI.hasMips64() ?
      &Mips::GPR64RegClass : &Mips::GPR32RegClass;
    int FI = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
                                                  RC->getAlignment(), false);
    RS->addScavengingFrameIndex(FI);
  }

  // Set scavenging frame index if necessary.
  uint64_t MaxSPOffset = MF.getInfo<MipsFunctionInfo>()->getIncomingArgSize() +
    estimateStackSize(MF);

  if (isInt<16>(MaxSPOffset))
    return;

  const TargetRegisterClass *RC =
      ABI.ArePtrs64bit() ? &Mips::GPR64RegClass : &Mips::GPR32RegClass;
  int FI = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
                                                RC->getAlignment(), false);
  RS->addScavengingFrameIndex(FI);
}

开发者ID:AnachroNia，项目名称:llvm，代码行数:49，代码来源:MipsSEFrameLowering.cpp

示例3: estimateStackSize

void MipsSEFrameLowering::
processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
                                     RegScavenger *RS) const {
  MachineRegisterInfo &MRI = MF.getRegInfo();
  MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
  unsigned FP = STI.isABI_N64() ? Mips::FP_64 : Mips::FP;

  // Mark $fp as used if function has dedicated frame pointer.
  if (hasFP(MF))
    MRI.setPhysRegUsed(FP);

  // Create spill slots for eh data registers if function calls eh_return.
  if (MipsFI->callsEhReturn())
    MipsFI->createEhDataRegsFI();

  // Expand pseudo instructions which load, store or copy accumulators.
  // Add an emergency spill slot if a pseudo was expanded.
  if (ExpandPseudo(MF).expand()) {
    // The spill slot should be half the size of the accumulator. If target is
    // mips64, it should be 64-bit, otherwise it should be 32-bt.
    const TargetRegisterClass *RC = STI.hasMips64() ?
      &Mips::GPR64RegClass : &Mips::GPR32RegClass;
    int FI = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
                                                  RC->getAlignment(), false);
    RS->addScavengingFrameIndex(FI);
  }

  // Set scavenging frame index if necessary.
  uint64_t MaxSPOffset = MF.getInfo<MipsFunctionInfo>()->getIncomingArgSize() +
    estimateStackSize(MF);

  if (isInt<16>(MaxSPOffset))
    return;

  const TargetRegisterClass *RC = STI.isABI_N64() ?
    &Mips::GPR64RegClass : &Mips::GPR32RegClass;
  int FI = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
                                                RC->getAlignment(), false);
  RS->addScavengingFrameIndex(FI);
}

开发者ID:IllusionRom-deprecated，项目名称:android_platform_external_llvm，代码行数:40，代码来源:MipsSEFrameLowering.cpp

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