#include <PPCRegisterInfo.h>

Inheritance diagram for llvm::PPCRegisterInfo:

Collaboration diagram for llvm::PPCRegisterInfo:

Public Member Functions
	PPCRegisterInfo (const PPCSubtarget &SubTarget)

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

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

const uint16_t *	getCalleeSavedRegs (const MachineFunction *MF=0) const
	Code Generation virtual methods... More...

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

const uint32_t *	getNoPreservedMask () const

BitVector	getReservedRegs (const MachineFunction &MF) const

bool	requiresRegisterScavenging (const MachineFunction &MF) const
	We require the register scavenger. More...

bool	requiresFrameIndexScavenging (const MachineFunction &MF) const

bool	trackLivenessAfterRegAlloc (const MachineFunction &MF) const

virtual bool	requiresVirtualBaseRegisters (const MachineFunction &MF) const

void	lowerDynamicAlloc (MachineBasicBlock::iterator II) const

void	lowerCRSpilling (MachineBasicBlock::iterator II, unsigned FrameIndex) const

void	lowerCRRestore (MachineBasicBlock::iterator II, unsigned FrameIndex) const

void	lowerVRSAVESpilling (MachineBasicBlock::iterator II, unsigned FrameIndex) const

void	lowerVRSAVERestore (MachineBasicBlock::iterator II, unsigned FrameIndex) const

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

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

bool	needsFrameBaseReg (MachineInstr *MI, int64_t Offset) const

void	materializeFrameBaseRegister (MachineBasicBlock *MBB, unsigned BaseReg, int FrameIdx, int64_t Offset) const

void	resolveFrameIndex (MachineBasicBlock::iterator I, unsigned BaseReg, int64_t Offset) const

bool	isFrameOffsetLegal (const MachineInstr *MI, int64_t Offset) const

unsigned	getFrameRegister (const MachineFunction &MF) const

unsigned	getBaseRegister (const MachineFunction &MF) const

bool	hasBasePointer (const MachineFunction &MF) const

bool	canRealignStack (const MachineFunction &MF) const

bool	needsStackRealignment (const MachineFunction &MF) const

Detailed Description

Definition at line 29 of file PPCRegisterInfo.h.

Constructor & Destructor Documentation

PPCRegisterInfo::PPCRegisterInfo ( const PPCSubtarget & SubTarget )

Definition at line 59 of file PPCRegisterInfo.cpp.

References llvm::A64DB::LD.

Member Function Documentation

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

Definition at line 713 of file PPCRegisterInfo.cpp.

References llvm::MachineFunction::getFunction(), and llvm::Function::hasFnAttribute().

Referenced by needsStackRealignment().

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

Definition at line 555 of file PPCRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::MachineOperand::ChangeToImmediate(), llvm::MachineOperand::ChangeToRegister(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::count(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::TargetOpcode::DBG_VALUE, llvm::PPCISD::DYNALLOC, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::find(), llvm::ISD::FrameIndex, llvm::MCInstrInfo::get(), llvm::Function::getAttributes(), getBaseRegister(), llvm::MachineInstr::getDebugLoc(), llvm::MachineFunction::getFrameInfo(), llvm::PPCFunctionInfo::getFramePointerSaveIndex(), getFrameRegister(), llvm::MachineFunction::getFunction(), llvm::MachineOperand::getImm(), llvm::MachineOperand::getIndex(), llvm::MachineFunction::getInfo(), llvm::TargetMachine::getInstrInfo(), llvm::MachineFrameInfo::getObjectOffset(), getOffsetONFromFION(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), hasBasePointer(), llvm::TargetOpcode::INLINEASM, llvm::MachineInstr::isInlineAsm(), llvm::isInt< 16 >(), llvm::PPCSubtarget::isPPC64(), llvm::RegState::Kill, lowerCRRestore(), lowerCRSpilling(), lowerDynamicAlloc(), lowerVRSAVERestore(), lowerVRSAVESpilling(), llvm::A64CC::MI, llvm::Attribute::Naked, llvm::MachineInstr::setDesc(), TII, and usesIXAddr().

unsigned PPCRegisterInfo::getBaseRegister ( const MachineFunction & MF ) const

Definition at line 694 of file PPCRegisterInfo.cpp.

References getFrameRegister(), hasBasePointer(), and llvm::PPCSubtarget::isPPC64().

Referenced by eliminateFrameIndex().

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

Code Generation virtual methods...

Definition at line 101 of file PPCRegisterInfo.cpp.

References llvm::PPCSubtarget::hasAltivec(), llvm::PPCSubtarget::isDarwinABI(), and llvm::PPCSubtarget::isPPC64().

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

Definition at line 119 of file PPCRegisterInfo.cpp.

References llvm::PPCSubtarget::hasAltivec(), llvm::PPCSubtarget::isDarwinABI(), and llvm::PPCSubtarget::isPPC64().

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

Definition at line 685 of file PPCRegisterInfo.cpp.

References llvm::TargetMachine::getFrameLowering(), llvm::MachineFunction::getTarget(), llvm::TargetFrameLowering::hasFP(), and llvm::PPCSubtarget::isPPC64().

Referenced by eliminateFrameIndex(), and getBaseRegister().

const uint32_t * PPCRegisterInfo::getNoPreservedMask ( ) const

Definition at line 137 of file PPCRegisterInfo.cpp.

Referenced by llvm::PPCTargetLowering::emitEHSjLjSetJmp().

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

virtual

getPointerRegClass - Return the register class to use to hold pointers. This is used for addressing modes.

Definition at line 85 of file PPCRegisterInfo.cpp.

References llvm::PPCSubtarget::isPPC64().

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

Definition at line 215 of file PPCRegisterInfo.cpp.

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

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

Definition at line 141 of file PPCRegisterInfo.cpp.

References llvm::sys::path::begin(), llvm::TargetMachine::getFrameLowering(), llvm::MachineFunction::getTarget(), llvm::PPCSubtarget::hasAltivec(), hasBasePointer(), I, llvm::ARM_PROC::IE, llvm::PPCSubtarget::isDarwinABI(), llvm::PPCSubtarget::isPPC64(), llvm::PPCSubtarget::isSVR4ABI(), llvm::PPCFrameLowering::needsFP(), R2, llvm::NVPTX::PTXCvtMode::RM, and llvm::BitVector::set().

bool PPCRegisterInfo::hasBasePointer ( const MachineFunction & MF ) const

Definition at line 701 of file PPCRegisterInfo.cpp.

References AlwaysBasePointer, EnableBasePointer, and needsStackRealignment().

Referenced by llvm::PPCFrameLowering::determineFrameLayout(), eliminateFrameIndex(), llvm::PPCFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitPrologue(), getBaseRegister(), getReservedRegs(), llvm::PPCFrameLowering::processFunctionBeforeCalleeSavedScan(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::PPCFrameLowering::replaceFPWithRealFP().

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

Definition at line 507 of file PPCRegisterInfo.cpp.

References llvm::PPCFunctionInfo::getCRSpillFrameIndex(), llvm::MachineFunction::getInfo(), llvm::PPCSubtarget::isPPC64(), and llvm::PPCSubtarget::isSVR4ABI().

bool PPCRegisterInfo::isFrameOffsetLegal	(	const MachineInstr *	MI,
		int64_t	Offset
	)		const

Definition at line 833 of file PPCRegisterInfo.cpp.

References llvm::TargetOpcode::DBG_VALUE, llvm::MachineInstr::getOpcode(), llvm::isInt< 16 >(), and usesIXAddr().

Referenced by needsFrameBaseReg().

void PPCRegisterInfo::lowerCRRestore	(	MachineBasicBlock::iterator	II,
		unsigned	FrameIndex
	)		const

void PPCRegisterInfo::lowerCRSpilling	(	MachineBasicBlock::iterator	II,
		unsigned	FrameIndex
	)		const

lowerCRSpilling - Generate the code for spilling a CR register. Instead of reserving a whole register (R0), we scrounge for one here. This generates code like this:

mfcr rA ; Move the conditional register into GPR rA. rlwinm rA, rA, SB, 0, 31 ; Shift the bits left so they are in CR0's slot. stw rA, FI ; Store rA to the frame.

Definition at line 369 of file PPCRegisterInfo.cpp.

References llvm::addFrameReference(), llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineBasicBlock::erase(), llvm::ISD::FrameIndex, llvm::MCInstrInfo::get(), llvm::MachineInstr::getDebugLoc(), llvm::TargetMachine::getInstrInfo(), llvm::getKillRegState(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getTarget(), llvm::MachineOperand::isKill(), llvm::PPCSubtarget::isPPC64(), llvm::RegState::Kill, llvm::PPCISD::MFOCRF, llvm::A64CC::MI, and TII.

Referenced by eliminateFrameIndex().

void PPCRegisterInfo::lowerDynamicAlloc ( MachineBasicBlock::iterator II ) const

lowerDynamicAlloc - Generate the code for allocating an object in the current frame. The sequence of code with be in the general form

addi R0, SP, #frameSize ; get the address of the previous frame stwxu R0, SP, Rnegsize ; add and update the SP with the negated size addi Rnew, SP, #maxCalFrameSize ; get the top of the allocation

Definition at line 250 of file PPCRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), AND, llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineBasicBlock::erase(), llvm::MCInstrInfo::get(), llvm::MachineInstr::getDebugLoc(), llvm::MachineFunction::getFrameInfo(), llvm::TargetMachine::getFrameLowering(), llvm::TargetMachine::getInstrInfo(), llvm::getKillRegState(), llvm::MachineFrameInfo::getMaxAlignment(), llvm::MachineFrameInfo::getMaxCallFrameSize(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), llvm::isInt< 16 >(), llvm::MachineOperand::isKill(), llvm::PPCSubtarget::isPPC64(), llvm::RegState::Kill, llvm::A64DB::LD, LI, llvm::A64CC::MI, and TII.

Referenced by eliminateFrameIndex().

void PPCRegisterInfo::lowerVRSAVERestore	(	MachineBasicBlock::iterator	II,
		unsigned	FrameIndex
	)		const

void PPCRegisterInfo::lowerVRSAVESpilling	(	MachineBasicBlock::iterator	II,
		unsigned	FrameIndex
	)		const

void PPCRegisterInfo::materializeFrameBaseRegister	(	MachineBasicBlock *	MBB,
		unsigned	BaseReg,
		int	FrameIdx,
		int64_t	Offset
	)		const

Insert defining instruction(s) for BaseReg to be a pointer to FrameIdx at the beginning of the basic block.

Definition at line 795 of file PPCRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::MachineRegisterInfo::constrainRegClass(), llvm::MachineBasicBlock::end(), llvm::MCInstrInfo::get(), llvm::TargetMachine::getInstrInfo(), llvm::MachineBasicBlock::getParent(), llvm::TargetInstrInfo::getRegClass(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getTarget(), llvm::MipsISD::Ins, llvm::PPCSubtarget::isPPC64(), MRI, and TII.

bool PPCRegisterInfo::needsFrameBaseReg	(	MachineInstr *	MI,
		int64_t	Offset
	)		const

Returns true if the instruction's frame index reference would be better served by a base register other than FP or SP. Used by LocalStackFrameAllocation to determine which frame index references it should create new base registers for.

Definition at line 737 of file PPCRegisterInfo.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT >::count(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::TargetMachine::getFrameLowering(), llvm::MachineOperand::getImm(), getOffsetONFromFION(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getTarget(), llvm::MachineOperand::isFI(), and isFrameOffsetLegal().

bool PPCRegisterInfo::needsStackRealignment ( const MachineFunction & MF ) const

Definition at line 720 of file PPCRegisterInfo.cpp.

References canRealignStack(), F(), llvm::Function::getAttributes(), llvm::MachineFunction::getFrameInfo(), llvm::TargetMachine::getFrameLowering(), llvm::MachineFunction::getFunction(), llvm::MachineFrameInfo::getMaxAlignment(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFunction::getTarget(), llvm::AttributeSet::hasAttribute(), and llvm::Attribute::StackAlignment.

Referenced by hasBasePointer().

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

inline

Definition at line 55 of file PPCRegisterInfo.h.

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

inline

We require the register scavenger.

Definition at line 51 of file PPCRegisterInfo.h.

virtual bool llvm::PPCRegisterInfo::requiresVirtualBaseRegisters ( const MachineFunction & MF ) const

inlinevirtual

Definition at line 63 of file PPCRegisterInfo.h.

void PPCRegisterInfo::resolveFrameIndex	(	MachineBasicBlock::iterator	I,
		unsigned	BaseReg,
		int64_t	Offset
	)		const

Definition at line 816 of file PPCRegisterInfo.cpp.

References llvm::MachineOperand::ChangeToImmediate(), llvm::MachineOperand::ChangeToRegister(), llvm::MachineOperand::getImm(), llvm::MachineInstr::getNumOperands(), getOffsetONFromFION(), llvm::MachineInstr::getOperand(), I, llvm::MachineOperand::isFI(), and llvm::A64CC::MI.

bool llvm::PPCRegisterInfo::trackLivenessAfterRegAlloc ( const MachineFunction & MF ) const

inline

Definition at line 59 of file PPCRegisterInfo.h.

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

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation