llvm::SystemZRegisterInfo Struct Reference

#include "Target/SystemZ/SystemZRegisterInfo.h"

Inheritance diagram for llvm::SystemZRegisterInfo:

Public Member Functions
	SystemZRegisterInfo (unsigned int RA)
const TargetRegisterClass *	getPointerRegClass (const MachineFunction &MF, unsigned Kind=0) const override
	getPointerRegClass - Return the register class to use to hold pointers.
const TargetRegisterClass *	getCrossCopyRegClass (const TargetRegisterClass *RC) const override
	getCrossCopyRegClass - Returns a legal register class to copy a register in the specified class to or from.
bool	getRegAllocationHints (Register VirtReg, ArrayRef< MCPhysReg > Order, SmallVectorImpl< MCPhysReg > &Hints, const MachineFunction &MF, const VirtRegMap *VRM, const LiveRegMatrix *Matrix) const override
bool	requiresRegisterScavenging (const MachineFunction &MF) const override
bool	requiresFrameIndexScavenging (const MachineFunction &MF) const override
const MCPhysReg *	getCalleeSavedRegs (const MachineFunction *MF) const override
const uint32_t *	getCallPreservedMask (const MachineFunction &MF, CallingConv::ID CC) const override
BitVector	getReservedRegs (const MachineFunction &MF) const override
bool	eliminateFrameIndex (MachineBasicBlock::iterator MI, int SPAdj, unsigned FIOperandNum, RegScavenger *RS) const override
bool	shouldCoalesce (MachineInstr *MI, const TargetRegisterClass *SrcRC, unsigned SubReg, const TargetRegisterClass *DstRC, unsigned DstSubReg, const TargetRegisterClass *NewRC, LiveIntervals &LIS) const override
	SrcRC and DstRC will be morphed into NewRC if this returns true.
Register	getFrameRegister (const MachineFunction &MF) const override

Detailed Description

Definition at line 128 of file SystemZRegisterInfo.h.

Constructor & Destructor Documentation

SystemZRegisterInfo()

SystemZRegisterInfo::SystemZRegisterInfo

(

unsigned int

RA

)

Definition at line 236 of file SystemZRegisterInfo.cpp.

Member Function Documentation

eliminateFrameIndex()

bool SystemZRegisterInfo::eliminateFrameIndex ( MachineBasicBlock::iterator  MI, int  SPAdj, unsigned  FIOperandNum, RegScavenger *  RS  ) const

override

Definition at line 285 of file SystemZRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::DIExpression::appendOffset(), llvm::DIExpression::appendOpsToArg(), assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), DL, llvm::StackOffset::getFixed(), llvm::TargetFrameLowering::getFrameIndexReference(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::SystemZII::HasIndex, llvm::RegState::Kill, MBB, MI, llvm::Offset, and TII.

getCalleeSavedRegs()

const MCPhysReg * SystemZRegisterInfo::getCalleeSavedRegs ( const MachineFunction *  MF ) const

override

Definition at line 240 of file SystemZRegisterInfo.cpp.

References llvm::SystemZCallingConventionRegisters::getCalleeSavedRegs(), llvm::SystemZSubtarget::getSpecialRegisters(), and llvm::MachineFunction::getSubtarget().

getCallPreservedMask()

const uint32_t * SystemZRegisterInfo::getCallPreservedMask ( const MachineFunction &  MF, CallingConv::ID  CC  ) const

override

Definition at line 249 of file SystemZRegisterInfo.cpp.

References CC, llvm::SystemZCallingConventionRegisters::getCallPreservedMask(), llvm::SystemZSubtarget::getSpecialRegisters(), and llvm::MachineFunction::getSubtarget().

getCrossCopyRegClass()

const TargetRegisterClass * SystemZRegisterInfo::getCrossCopyRegClass ( const TargetRegisterClass *  RC ) const

override

getCrossCopyRegClass - Returns a legal register class to copy a register in the specified class to or from.

Returns NULL if it is possible to copy between a two registers of the specified class.

Definition at line 460 of file SystemZRegisterInfo.cpp.

getFrameRegister()

Register SystemZRegisterInfo::getFrameRegister ( const MachineFunction &  MF ) const

override

Definition at line 450 of file SystemZRegisterInfo.cpp.

References llvm::SystemZSubtarget::getSpecialRegisters(), llvm::MachineFunction::getSubtarget(), and llvm::TargetFrameLowering::hasFP().

getPointerRegClass()

const TargetRegisterClass * llvm::SystemZRegisterInfo::getPointerRegClass ( const MachineFunction &  MF, unsigned  Kind = 0  ) const

inlineoverride

getPointerRegClass - Return the register class to use to hold pointers.

This is currently only used by LOAD_STACK_GUARD, which requires a non-r0 register, hence ADDR64.

Definition at line 136 of file SystemZRegisterInfo.h.

getRegAllocationHints()

bool SystemZRegisterInfo::getRegAllocationHints ( Register  VirtReg, ArrayRef< MCPhysReg >  Order, SmallVectorImpl< MCPhysReg > &  Hints, const MachineFunction &  MF, const VirtRegMap *  VRM, const LiveRegMatrix *  Matrix  ) const

override

Definition at line 74 of file SystemZRegisterInfo.cpp.

References addHints(), llvm::SmallSet< T, N, C >::count(), DefMI, llvm::VirtRegMap::getPhys(), getRC32(), llvm::MachineOperand::getReg(), llvm::TargetRegisterInfo::getRegAllocationHints(), llvm::MachineFunction::getRegInfo(), llvm::SystemZSubtarget::getRegisterInfo(), llvm::MachineOperand::getSubReg(), llvm::MachineFunction::getSubtarget(), llvm::SystemZ::getTwoOperandOpcode(), llvm::SmallSet< T, N, C >::insert(), llvm::is_contained(), Matrix, MRI, llvm::SmallVectorImpl< T >::pop_back_val(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), and TRI.

getReservedRegs()

BitVector SystemZRegisterInfo::getReservedRegs ( const MachineFunction &  MF ) const

override

Definition at line 258 of file SystemZRegisterInfo.cpp.

References llvm::SystemZSubtarget::getSpecialRegisters(), llvm::MachineFunction::getSubtarget(), llvm::TargetFrameLowering::hasFP(), llvm::MCRegAliasIterator::isValid(), and llvm::Reserved.

requiresFrameIndexScavenging()

bool llvm::SystemZRegisterInfo::requiresFrameIndexScavenging ( const MachineFunction &  MF ) const

inlineoverride

Definition at line 156 of file SystemZRegisterInfo.h.

requiresRegisterScavenging()

bool llvm::SystemZRegisterInfo::requiresRegisterScavenging ( const MachineFunction &  MF ) const

inlineoverride

Definition at line 153 of file SystemZRegisterInfo.h.

shouldCoalesce()

bool SystemZRegisterInfo::shouldCoalesce ( MachineInstr *  MI, const TargetRegisterClass *  SrcRC, unsigned  SubReg, const TargetRegisterClass *  DstRC, unsigned  DstSubReg, const TargetRegisterClass *  NewRC, LiveIntervals &  LIS  ) const

override

SrcRC and DstRC will be morphed into NewRC if this returns true.

Definition at line 379 of file SystemZRegisterInfo.cpp.

References assert(), llvm::LiveRange::beginIndex(), llvm::TargetRegisterClass::contains(), llvm::BitVector::count(), llvm::LiveRange::endIndex(), llvm::LiveIntervals::getInstructionFromIndex(), llvm::LiveIntervals::getInterval(), llvm::TargetRegisterClass::getNumRegs(), llvm::MachineInstr::getParent(), getReg(), llvm::TargetRegisterClass::hasSuperClassEq(), MBB, MI, llvm::BitVector::set(), and SI.

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The documentation for this struct was generated from the following files:

• lib/Target/SystemZ/SystemZRegisterInfo.h
• lib/Target/SystemZ/SystemZRegisterInfo.cpp