#include <X86RegisterInfo.h>

Inheritance diagram for llvm::X86RegisterInfo:

Collaboration diagram for llvm::X86RegisterInfo:

Public Member Functions
	X86RegisterInfo (X86TargetMachine &tm)

int	getSEHRegNum (unsigned i) const

int	getCompactUnwindRegNum (unsigned RegNum, bool isEH) const

virtual bool	trackLivenessAfterRegAlloc (const MachineFunction &MF) const

virtual const TargetRegisterClass *	getMatchingSuperRegClass (const TargetRegisterClass A, const TargetRegisterClass B, unsigned Idx) const

virtual const TargetRegisterClass *	getSubClassWithSubReg (const TargetRegisterClass *RC, unsigned Idx) const

const TargetRegisterClass *	getLargestLegalSuperClass (const TargetRegisterClass *RC) const

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

const TargetRegisterClass *	getCrossCopyRegClass (const TargetRegisterClass *RC) const

unsigned	getRegPressureLimit (const TargetRegisterClass *RC, MachineFunction &MF) const

const uint16_t *	getCalleeSavedRegs (const MachineFunction *MF=0) const

const uint32_t *	getCallPreservedMask (CallingConv::ID) const

const uint32_t *	getNoPreservedMask () const

BitVector	getReservedRegs (const MachineFunction &MF) const

bool	hasBasePointer (const MachineFunction &MF) const

bool	canRealignStack (const MachineFunction &MF) const

bool	needsStackRealignment (const MachineFunction &MF) const

bool	hasReservedSpillSlot (const MachineFunction &MF, unsigned Reg, int &FrameIdx) const

void	eliminateFrameIndex (MachineBasicBlock::iterator MI, int SPAdj, unsigned FIOperandNum, RegScavenger *RS=NULL) const

unsigned	getFrameRegister (const MachineFunction &MF) const

unsigned	getStackRegister () const

unsigned	getBaseRegister () const

unsigned	getSlotSize () const

Public Attributes
X86TargetMachine &	TM

Detailed Description

Definition at line 27 of file X86RegisterInfo.h.

Constructor & Destructor Documentation

X86RegisterInfo::X86RegisterInfo ( X86TargetMachine & tm )

Definition at line 57 of file X86RegisterInfo.cpp.

References llvm::N86::EBP, llvm::N86::ESI, llvm::N86::ESP, llvm::TargetMachine::getSubtarget(), llvm::X86_MC::InitLLVM2SEHRegisterMapping(), llvm::X86Subtarget::is64Bit(), llvm::X86Subtarget::isTargetWin64(), and TM.

Member Function Documentation

bool X86RegisterInfo::canRealignStack ( const MachineFunction & MF ) const

Definition at line 420 of file X86RegisterInfo.cpp.

References llvm::MachineRegisterInfo::canReserveReg(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getRegInfo(), llvm::Function::hasFnAttribute(), llvm::MachineFrameInfo::hasVarSizedObjects(), and MRI.

Referenced by llvm::X86InstrInfo::loadRegFromStackSlot(), needsStackRealignment(), and llvm::X86InstrInfo::storeRegToStackSlot().

void X86RegisterInfo::eliminateFrameIndex	(	MachineBasicBlock::iterator	MI,
		int	SPAdj,
		unsigned	FIOperandNum,
		RegScavenger *	RS = `NULL`
	)		const

Definition at line 467 of file X86RegisterInfo.cpp.

References llvm::MachineOperand::ChangeToImmediate(), llvm::MachineOperand::ChangeToRegister(), llvm::ISD::FrameIndex, getBaseRegister(), llvm::TargetFrameLowering::getFrameIndexOffset(), llvm::MachineFunction::getFrameInfo(), llvm::TargetMachine::getFrameLowering(), llvm::MachineOperand::getImm(), llvm::MachineOperand::getIndex(), llvm::MachineFrameInfo::getObjectOffset(), llvm::MachineOperand::getOffset(), llvm::TargetFrameLowering::getOffsetOfLocalArea(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getTarget(), hasBasePointer(), llvm::TargetFrameLowering::hasFP(), llvm::MachineOperand::isImm(), llvm::isInt< 32 >(), llvm::A64CC::MI, needsStackRealignment(), and llvm::MachineOperand::setOffset().

unsigned llvm::X86RegisterInfo::getBaseRegister ( ) const

inline

Definition at line 126 of file X86RegisterInfo.h.

Referenced by eliminateFrameIndex(), llvm::X86FrameLowering::emitPrologue(), llvm::X86SelectionDAGInfo::EmitTargetCodeForMemcpy(), llvm::X86FrameLowering::getFrameIndexReference(), getReservedRegs(), and llvm::X86FrameLowering::processFunctionBeforeCalleeSavedScan().

const uint16_t * X86RegisterInfo::getCalleeSavedRegs ( const MachineFunction * MF = 0 ) const

getCalleeSavedRegs - Return a null-terminated list of all of the callee-save registers on this target.

Definition at line 236 of file X86RegisterInfo.cpp.

References llvm::CallingConv::AnyReg, llvm::MachineModuleInfo::callsEHReturn(), llvm::CallingConv::Cold, llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getMMI(), llvm::TargetMachine::getSubtarget(), llvm::CallingConv::GHC, llvm::CallingConv::HiPE, llvm::CallingConv::Intel_OCL_BI, TM, and llvm::CallingConv::WebKit_JS.

const uint32_t * X86RegisterInfo::getCallPreservedMask ( CallingConv::ID CC ) const

Definition at line 286 of file X86RegisterInfo.cpp.

References llvm::CallingConv::AnyReg, llvm::CallingConv::Cold, llvm::TargetMachine::getSubtarget(), llvm::CallingConv::GHC, llvm::CallingConv::HiPE, llvm::CallingConv::Intel_OCL_BI, TM, and llvm::CallingConv::WebKit_JS.

Referenced by getReservedRegs().

int X86RegisterInfo::getCompactUnwindRegNum	(	unsigned	RegNum,
		bool	isEH
	)		const

getCompactUnwindRegNum - This function maps the register to the number for compact unwind encoding. Return -1 if the register isn't valid.

Definition at line 89 of file X86RegisterInfo.cpp.

References llvm::N86::EBP, llvm::N86::EBX, llvm::N86::ECX, llvm::N86::EDI, llvm::N86::EDX, and llvm::N86::ESI.

const TargetRegisterClass * X86RegisterInfo::getCrossCopyRegClass ( const TargetRegisterClass * RC ) const

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 205 of file X86RegisterInfo.cpp.

unsigned X86RegisterInfo::getFrameRegister ( const MachineFunction & MF ) const

Definition at line 517 of file X86RegisterInfo.cpp.

References llvm::TargetMachine::getFrameLowering(), llvm::MachineFunction::getTarget(), and llvm::TargetFrameLowering::hasFP().

Referenced by llvm::X86FrameLowering::emitPrologue(), llvm::X86FrameLowering::getFrameIndexReference(), and LowerINTRINSIC_W_CHAIN().

const TargetRegisterClass * X86RegisterInfo::getLargestLegalSuperClass ( const TargetRegisterClass * RC ) const

Definition at line 139 of file X86RegisterInfo.cpp.

References llvm::TargetRegisterClass::getID(), llvm::TargetRegisterClass::getSize(), llvm::TargetRegisterClass::getSuperClasses(), and I.

const TargetRegisterClass * X86RegisterInfo::getMatchingSuperRegClass	(	const TargetRegisterClass *	A,
		const TargetRegisterClass *	B,
		unsigned	Idx
	)		const

virtual

getMatchingSuperRegClass - Return a subclass of the specified register class A so that each register in it has a sub-register of the specified sub-register index which is in the specified register class B.

Definition at line 126 of file X86RegisterInfo.cpp.

const uint32_t * X86RegisterInfo::getNoPreservedMask ( ) const

Definition at line 316 of file X86RegisterInfo.cpp.

const TargetRegisterClass * X86RegisterInfo::getPointerRegClass	(	const MachineFunction &	MF,
		unsigned	Kind = `0`
	)		const

getPointerRegClass - Returns a TargetRegisterClass used for pointer values.

Definition at line 177 of file X86RegisterInfo.cpp.

References F(), llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::TargetMachine::getSubtarget(), llvm::CallingConv::HiPE, llvm::X86Subtarget::is64Bit(), llvm::X86Subtarget::isTarget64BitLP64(), llvm::X86Subtarget::isTargetWin64(), llvm_unreachable, and TM.

unsigned X86RegisterInfo::getRegPressureLimit	(	const TargetRegisterClass *	RC,
		MachineFunction &	MF
	)		const

Definition at line 216 of file X86RegisterInfo.cpp.

References llvm::TargetMachine::getFrameLowering(), llvm::TargetRegisterClass::getID(), llvm::TargetMachine::getSubtarget(), llvm::MachineFunction::getTarget(), llvm::TargetFrameLowering::hasFP(), and TM.

BitVector X86RegisterInfo::getReservedRegs ( const MachineFunction & MF ) const

getReservedRegs - Returns a bitset indexed by physical register number indicating if a register is a special register that has particular uses and should be considered unavailable at all times, e.g. SP, RA. This is used by register scavenger to determine what registers are free.

Definition at line 320 of file X86RegisterInfo.cpp.

References llvm::MachineOperand::clobbersPhysReg(), llvm::X86II::FS, getBaseRegister(), llvm::Function::getCallingConv(), getCallPreservedMask(), llvm::TargetMachine::getFrameLowering(), llvm::MachineFunction::getFunction(), llvm::TargetMachine::getSubtarget(), llvm::MachineFunction::getTarget(), llvm::X86II::GS, llvm::X86Subtarget::hasAVX512(), hasBasePointer(), llvm::TargetFrameLowering::hasFP(), I, llvm::MCRegAliasIterator::isValid(), llvm::report_fatal_error(), llvm::BitVector::set(), and TM.