LLVM  8.0.1
Public Member Functions | Static Public Member Functions | List of all members
llvm::PPCRegisterInfo Class Reference

#include "Target/PowerPC/PPCRegisterInfo.h"

Inheritance diagram for llvm::PPCRegisterInfo:
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Public Member Functions

 PPCRegisterInfo (const PPCTargetMachine &TM)
 
const TargetRegisterClass * getPointerRegClass (const MachineFunction &MF, unsigned Kind=0) const override
 getPointerRegClass - Return the register class to use to hold pointers. More...
 
unsigned getRegPressureLimit (const TargetRegisterClass *RC, MachineFunction &MF) const override
 
const TargetRegisterClass * getLargestLegalSuperClass (const TargetRegisterClass *RC, const MachineFunction &MF) const override
 
const MCPhysReg * getCalleeSavedRegs (const MachineFunction *MF) const override
 Code Generation virtual methods... More...
 
const MCPhysReg * getCalleeSavedRegsViaCopy (const MachineFunction *MF) const
 
const uint32_t * getCallPreservedMask (const MachineFunction &MF, CallingConv::ID CC) const override
 
const uint32_t * getNoPreservedMask () const override
 
void adjustStackMapLiveOutMask (uint32_t *Mask) const override
 
BitVector getReservedRegs (const MachineFunction &MF) const override
 
bool isCallerPreservedPhysReg (unsigned PhysReg, const MachineFunction &MF) const override
 
bool requiresRegisterScavenging (const MachineFunction &MF) const override
 We require the register scavenger. More...
 
bool requiresFrameIndexScavenging (const MachineFunction &MF) const override
 
bool trackLivenessAfterRegAlloc (const MachineFunction &MF) const override
 
bool requiresVirtualBaseRegisters (const MachineFunction &MF) const override
 
void lowerDynamicAlloc (MachineBasicBlock::iterator II) const
 lowerDynamicAlloc - Generate the code for allocating an object in the current frame. More...
 
void lowerDynamicAreaOffset (MachineBasicBlock::iterator II) const
 
void lowerCRSpilling (MachineBasicBlock::iterator II, unsigned FrameIndex) const
 lowerCRSpilling - Generate the code for spilling a CR register. More...
 
void lowerCRRestore (MachineBasicBlock::iterator II, unsigned FrameIndex) const
 
void lowerCRBitSpilling (MachineBasicBlock::iterator II, unsigned FrameIndex) const
 
void lowerCRBitRestore (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 override
 
void eliminateFrameIndex (MachineBasicBlock::iterator II, int SPAdj, unsigned FIOperandNum, RegScavenger *RS=nullptr) const override
 
bool needsFrameBaseReg (MachineInstr *MI, int64_t Offset) const override
 Returns true if the instruction's frame index reference would be better served by a base register other than FP or SP. More...
 
void materializeFrameBaseRegister (MachineBasicBlock *MBB, unsigned BaseReg, int FrameIdx, int64_t Offset) const override
 Insert defining instruction(s) for BaseReg to be a pointer to FrameIdx at the beginning of the basic block. More...
 
void resolveFrameIndex (MachineInstr &MI, unsigned BaseReg, int64_t Offset) const override
 
bool isFrameOffsetLegal (const MachineInstr *MI, unsigned BaseReg, int64_t Offset) const override
 
unsigned getFrameRegister (const MachineFunction &MF) const override
 
unsigned getBaseRegister (const MachineFunction &MF) const
 
bool hasBasePointer (const MachineFunction &MF) const
 

Static Public Member Functions

static const char * stripRegisterPrefix (const char *RegName)
 stripRegisterPrefix - This method strips the character prefix from a register name so that only the number is left. More...
 

Detailed Description

Definition at line 57 of file PPCRegisterInfo.h.

Constructor & Destructor Documentation

◆ PPCRegisterInfo()

PPCRegisterInfo::PPCRegisterInfo ( const PPCTargetMachine &  TM)

Definition at line 74 of file PPCRegisterInfo.cpp.

References llvm::ARM_MB::LD.

Member Function Documentation

◆ adjustStackMapLiveOutMask()

void PPCRegisterInfo::adjustStackMapLiveOutMask ( uint32_t *  Mask) const
override

Definition at line 243 of file PPCRegisterInfo.cpp.

References llvm::NVPTX::PTXCvtMode::RM.

◆ eliminateFrameIndex()

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

Definition at line 871 of file PPCRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), assert(), llvm::BuildMI(), llvm::MachineOperand::ChangeToImmediate(), llvm::MachineOperand::ChangeToRegister(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::PPCISD::DYNALLOC, llvm::PPCISD::DYNAREAOFFSET, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::ISD::FrameIndex, llvm::DebugLoc::get(), getBaseRegister(), llvm::MachineInstr::getDebugLoc(), llvm::MachineFunction::getFrameInfo(), llvm::PPCFunctionInfo::getFramePointerSaveIndex(), getFrameRegister(), llvm::MachineFunction::getFunction(), llvm::MachineOperand::getImm(), llvm::MachineOperand::getIndex(), llvm::MachineFunction::getInfo(), llvm::PPCSubtarget::getInstrInfo(), llvm::MachineFrameInfo::getObjectOffset(), getOffsetONFromFION(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), hasBasePointer(), llvm::Function::hasFnAttribute(), llvm::ISD::INLINEASM, is64Bit(), llvm::MachineInstr::isInlineAsm(), llvm::isInt< 16 >(), llvm::PPCTargetMachine::isPPC64(), llvm::RegState::Kill, lowerCRBitRestore(), lowerCRBitSpilling(), lowerCRRestore(), lowerCRSpilling(), lowerDynamicAlloc(), lowerDynamicAreaOffset(), lowerVRSAVERestore(), lowerVRSAVESpilling(), MI, llvm::Attribute::Naked, offsetMinAlign(), llvm::MachineInstr::setDesc(), and TII.

Referenced by requiresVirtualBaseRegisters().

◆ getBaseRegister()

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

Definition at line 1028 of file PPCRegisterInfo.cpp.

References getFrameRegister(), llvm::MachineFunction::getSubtarget(), hasBasePointer(), llvm::TargetMachine::isPositionIndependent(), llvm::PPCTargetMachine::isPPC64(), and llvm::PPCSubtarget::isSVR4ABI().

Referenced by llvm::PPCFrameLowering::determineCalleeSaves(), eliminateFrameIndex(), llvm::PPCFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitPrologue(), needsFrameBaseReg(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCFrameLowering::replaceFPWithRealFP(), and requiresVirtualBaseRegisters().

◆ getCalleeSavedRegs()

const MCPhysReg * PPCRegisterInfo::getCalleeSavedRegs ( const MachineFunction *  MF) const
override

Code Generation virtual methods...

Definition at line 136 of file PPCRegisterInfo.cpp.

References llvm::CallingConv::AnyReg, llvm::CallingConv::Cold, llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::PPCSubtarget::hasAltivec(), llvm::PPCSubtarget::hasSPE(), llvm::PPCSubtarget::hasVSX(), llvm::MachineRegisterInfo::isAllocatable(), llvm::PPCSubtarget::isDarwinABI(), and llvm::PPCTargetMachine::isPPC64().

Referenced by llvm::PPCFrameLowering::assignCalleeSavedSpillSlots(), and llvm::PPCFrameLowering::replaceFPWithRealFP().

◆ getCalleeSavedRegsViaCopy()

const MCPhysReg * PPCRegisterInfo::getCalleeSavedRegsViaCopy ( const MachineFunction *  MF) const

Definition at line 183 of file PPCRegisterInfo.cpp.

References assert(), llvm::CallingConv::CXX_FAST_TLS, llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), getReservedRegs(), llvm::MachineFunction::getSubtarget(), llvm::PPCSubtarget::hasAltivec(), llvm::PPCSubtarget::isDarwinABI(), llvm::PPCTargetMachine::isPPC64(), llvm::PPCFunctionInfo::isSplitCSR(), and llvm::BitVector::test().

Referenced by llvm::PPCTargetLowering::insertCopiesSplitCSR(), and PrepareCall().

◆ getCallPreservedMask()

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

Definition at line 208 of file PPCRegisterInfo.cpp.

References llvm::CallingConv::AnyReg, llvm::CallingConv::Cold, llvm::MachineFunction::getSubtarget(), llvm::PPCSubtarget::hasAltivec(), llvm::PPCSubtarget::hasVSX(), llvm::PPCSubtarget::isDarwinABI(), and llvm::PPCTargetMachine::isPPC64().

◆ getFrameRegister()

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

Definition at line 1019 of file PPCRegisterInfo.cpp.

References llvm::PPCFrameLowering::hasFP(), and llvm::PPCTargetMachine::isPPC64().

Referenced by eliminateFrameIndex(), getBaseRegister(), and requiresVirtualBaseRegisters().

◆ getLargestLegalSuperClass()

const TargetRegisterClass * PPCRegisterInfo::getLargestLegalSuperClass ( const TargetRegisterClass *  RC,
const MachineFunction &  MF 
) const
override

Definition at line 380 of file PPCRegisterInfo.cpp.

References EnableGPRToVecSpills, llvm::TargetRegisterInfo::getLargestLegalSuperClass(), llvm::MachineFunction::getSubtarget(), llvm::PPCSubtarget::hasP8Vector(), llvm::PPCSubtarget::hasP9Vector(), llvm::PPCSubtarget::hasVSX(), and llvm::PPCTargetMachine::isELFv2ABI().

◆ getNoPreservedMask()

const uint32_t * PPCRegisterInfo::getNoPreservedMask ( ) const
override

Definition at line 239 of file PPCRegisterInfo.cpp.

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

◆ getPointerRegClass()

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

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

This is used for addressing modes.

Definition at line 120 of file PPCRegisterInfo.cpp.

References llvm::PPCTargetMachine::isPPC64().

◆ getRegPressureLimit()

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

Definition at line 344 of file PPCRegisterInfo.cpp.

References llvm::TargetRegisterClass::getID(), and llvm::PPCFrameLowering::hasFP().

◆ getReservedRegs()

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

Definition at line 248 of file PPCRegisterInfo.cpp.

References assert(), llvm::sys::path::begin(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getSubtarget(), llvm::PPCSubtarget::hasAltivec(), hasBasePointer(), llvm::MachineFunction::hasInlineAsm(), I, llvm::ARM_PROC::IE, llvm::PPCSubtarget::isDarwinABI(), llvm::TargetMachine::isPositionIndependent(), llvm::PPCTargetMachine::isPPC64(), llvm::PPCSubtarget::isSVR4ABI(), R2, llvm::NVPTX::PTXCvtMode::RM, and llvm::PPCFunctionInfo::usesTOCBasePtr().

Referenced by getCalleeSavedRegsViaCopy(), and isCallerPreservedPhysReg().

◆ hasBasePointer()

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

Definition at line 1042 of file PPCRegisterInfo.cpp.

References AlwaysBasePointer, EnableBasePointer, and needsFrameBaseReg().

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

◆ hasReservedSpillSlot()

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

Definition at line 808 of file PPCRegisterInfo.cpp.

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

Referenced by requiresVirtualBaseRegisters().

◆ isCallerPreservedPhysReg()

bool PPCRegisterInfo::isCallerPreservedPhysReg ( unsigned  PhysReg,
const MachineFunction &  MF 
) const
override

Definition at line 319 of file PPCRegisterInfo.cpp.

References assert(), llvm::MachineFunction::getFrameInfo(), getReservedRegs(), llvm::MachineFunction::getSubtarget(), llvm::TargetRegisterInfo::isPhysicalRegister(), llvm::PPCTargetMachine::isPPC64(), llvm::PPCSubtarget::isSVR4ABI(), StackPtrConst, and llvm::BitVector::test().

◆ isFrameOffsetLegal()

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

Definition at line 1149 of file PPCRegisterInfo.cpp.

References assert(), llvm::MachineOperand::getImm(), getOffsetONFromFION(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::isFI(), llvm::isInt< 16 >(), and offsetMinAlign().

Referenced by needsFrameBaseReg(), and requiresVirtualBaseRegisters().

◆ lowerCRBitRestore()

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

Definition at line 705 of file PPCRegisterInfo.cpp.

References llvm::addFrameReference(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineInstr::definesRegister(), llvm::MachineBasicBlock::erase(), llvm::DebugLoc::get(), llvm::getCRFromCRBit(), llvm::MachineInstr::getDebugLoc(), llvm::PPCSubtarget::getInstrInfo(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::RegState::Implicit, llvm::PPCTargetMachine::isPPC64(), llvm::RegState::Kill, llvm::PPCISD::MFOCRF, MI, Reg, and TII.

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ lowerCRBitSpilling()

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

Definition at line 658 of file PPCRegisterInfo.cpp.

References llvm::addFrameReference(), llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineBasicBlock::erase(), llvm::ISD::FrameIndex, llvm::DebugLoc::get(), llvm::getCRFromCRBit(), llvm::MachineInstr::getDebugLoc(), llvm::PPCSubtarget::getInstrInfo(), llvm::getKillRegState(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::RegState::Implicit, llvm::MachineOperand::isKill(), llvm::PPCTargetMachine::isPPC64(), llvm::RegState::Kill, llvm::PPCISD::MFOCRF, MI, Reg, TII, and llvm::RegState::Undef.

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ lowerCRRestore()

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

Definition at line 615 of file PPCRegisterInfo.cpp.

References llvm::addFrameReference(), llvm::MachineInstrBuilder::addImm(), assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineInstr::definesRegister(), llvm::MachineBasicBlock::erase(), llvm::DebugLoc::get(), llvm::MachineInstr::getDebugLoc(), llvm::PPCSubtarget::getInstrInfo(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::PPCTargetMachine::isPPC64(), llvm::RegState::Kill, MI, Reg, and TII.

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ lowerCRSpilling()

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 570 of file PPCRegisterInfo.cpp.

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

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ lowerDynamicAlloc()

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

lowerDynamicAlloc - Generate the code for allocating an object in the current frame.

The sequence of code will 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 421 of file PPCRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ISD::AND, assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineBasicBlock::erase(), llvm::DebugLoc::get(), llvm::MachineInstr::getDebugLoc(), llvm::MachineFunction::getFrameInfo(), llvm::PPCSubtarget::getInstrInfo(), llvm::getKillRegState(), llvm::MachineFrameInfo::getMaxAlignment(), llvm::MachineFrameInfo::getMaxCallFrameSize(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::isInt< 16 >(), llvm::MachineOperand::isKill(), llvm::PPCTargetMachine::isPPC64(), llvm::RegState::Kill, llvm::ARM_MB::LD, MI, Reg, and TII.

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ lowerDynamicAreaOffset()

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

Definition at line 539 of file PPCRegisterInfo.cpp.

References llvm::BuildMI(), llvm::MachineBasicBlock::erase(), llvm::DebugLoc::get(), llvm::MachineInstr::getDebugLoc(), llvm::MachineFunction::getFrameInfo(), llvm::PPCSubtarget::getInstrInfo(), llvm::MachineFrameInfo::getMaxCallFrameSize(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getSubtarget(), is64Bit(), llvm::PPCTargetMachine::isPPC64(), MI, and TII.

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ lowerVRSAVERestore()

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

Definition at line 781 of file PPCRegisterInfo.cpp.

References llvm::addFrameReference(), assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineInstr::definesRegister(), llvm::MachineBasicBlock::erase(), llvm::DebugLoc::get(), llvm::MachineInstr::getDebugLoc(), llvm::PPCSubtarget::getInstrInfo(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::RegState::Kill, MI, Reg, and TII.

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ lowerVRSAVESpilling()

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

Definition at line 755 of file PPCRegisterInfo.cpp.

References llvm::addFrameReference(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineBasicBlock::erase(), llvm::ISD::FrameIndex, llvm::DebugLoc::get(), llvm::MachineInstr::getDebugLoc(), llvm::PPCSubtarget::getInstrInfo(), llvm::getKillRegState(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::MachineOperand::isKill(), llvm::RegState::Kill, MI, Reg, and TII.

Referenced by eliminateFrameIndex(), and requiresVirtualBaseRegisters().

◆ materializeFrameBaseRegister()

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

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

Definition at line 1104 of file PPCRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::MachineRegisterInfo::constrainRegClass(), llvm::MachineBasicBlock::end(), llvm::PPCSubtarget::getInstrInfo(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::MipsISD::Ins, llvm::PPCTargetMachine::isPPC64(), MRI, and TII.

Referenced by needsFrameBaseReg(), and requiresVirtualBaseRegisters().

◆ needsFrameBaseReg()

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

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 1059 of file PPCRegisterInfo.cpp.

References assert(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count(), llvm::PPCFrameLowering::determineFrameLayout(), getBaseRegister(), llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), isFrameOffsetLegal(), and materializeFrameBaseRegister().

Referenced by hasBasePointer(), and requiresVirtualBaseRegisters().

◆ requiresFrameIndexScavenging()

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

Definition at line 93 of file PPCRegisterInfo.h.

◆ requiresRegisterScavenging()

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

We require the register scavenger.

Definition at line 89 of file PPCRegisterInfo.h.

◆ requiresVirtualBaseRegisters()

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

Definition at line 101 of file PPCRegisterInfo.h.

References eliminateFrameIndex(), llvm::ISD::FrameIndex, getBaseRegister(), getFrameRegister(), hasBasePointer(), hasReservedSpillSlot(), isFrameOffsetLegal(), lowerCRBitRestore(), lowerCRBitSpilling(), lowerCRRestore(), lowerCRSpilling(), lowerDynamicAlloc(), lowerDynamicAreaOffset(), lowerVRSAVERestore(), lowerVRSAVESpilling(), materializeFrameBaseRegister(), MI, needsFrameBaseReg(), Reg, and resolveFrameIndex().

◆ resolveFrameIndex()

void PPCRegisterInfo::resolveFrameIndex ( MachineInstr &  MI,
unsigned  BaseReg,
int64_t  Offset 
) const
override

Definition at line 1125 of file PPCRegisterInfo.cpp.

References assert(), llvm::MachineOperand::ChangeToImmediate(), llvm::MachineOperand::ChangeToRegister(), llvm::MachineRegisterInfo::constrainRegClass(), llvm::MachineInstr::getDesc(), llvm::MachineOperand::getImm(), llvm::PPCSubtarget::getInstrInfo(), llvm::MachineInstr::getNumOperands(), getOffsetONFromFION(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::MachineOperand::isFI(), MRI, and TII.

Referenced by requiresVirtualBaseRegisters().

◆ stripRegisterPrefix()

static const char* llvm::PPCRegisterInfo::stripRegisterPrefix ( const char *  RegName)
inlinestatic

stripRegisterPrefix - This method strips the character prefix from a register name so that only the number is left.

Used by for linux asm.

Definition at line 145 of file PPCRegisterInfo.h.

Referenced by llvm::PPCInstPrinter::printOperand().

◆ trackLivenessAfterRegAlloc()

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

Definition at line 97 of file PPCRegisterInfo.h.

The documentation for this class was generated from the following files:
Generated on Sun Dec 20 2020 14:12:30 for LLVM by   doxygen 1.8.13