RISCVFrameLowering.cpp File Reference

#include "RISCVFrameLowering.h"
#include "RISCVMachineFunctionInfo.h"
#include "RISCVSubtarget.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/Support/LEB128.h"
#include <algorithm>

Include dependency graph for RISCVFrameLowering.cpp:

Go to the source code of this file.

Functions
static void	emitSCSPrologue (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const DebugLoc &DL)
static void	emitSCSEpilogue (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const DebugLoc &DL)
static int	getLibCallID (const MachineFunction &MF, const std::vector< CalleeSavedInfo > &CSI)
static const char *	getSpillLibCallName (const MachineFunction &MF, const std::vector< CalleeSavedInfo > &CSI)
static const char *	getRestoreLibCallName (const MachineFunction &MF, const std::vector< CalleeSavedInfo > &CSI)
static Register	getFPReg (const RISCVSubtarget &STI)
static Register	getSPReg (const RISCVSubtarget &STI)
static SmallVector< CalleeSavedInfo, 8 >	getNonLibcallCSI (const MachineFunction &MF, const std::vector< CalleeSavedInfo > &CSI)
static MCCFIInstruction	createDefCFAExpression (const TargetRegisterInfo &TRI, Register Reg, uint64_t FixedOffset, uint64_t ScalableOffset)
static unsigned	getScavSlotsNumForRVV (MachineFunction &MF)
static bool	hasRVVFrameObject (const MachineFunction &MF)
static unsigned	estimateFunctionSizeInBytes (const MachineFunction &MF, const RISCVInstrInfo &TII)

Function Documentation

createDefCFAExpression()

static MCCFIInstruction createDefCFAExpression ( const TargetRegisterInfo &  TRI, Register  Reg, uint64_t  FixedOffset, uint64_t  ScalableOffset  )

static

Definition at line 347 of file RISCVFrameLowering.cpp.

References llvm::SmallString< InternalLen >::append(), assert(), llvm::MCCFIInstruction::createEscape(), llvm::encodeSLEB128(), llvm::encodeULEB128(), llvm::MCRegisterInfo::getDwarfRegNum(), llvm::printReg(), llvm::SmallString< InternalLen >::str(), and TRI.

emitSCSEpilogue()

static void emitSCSEpilogue ( MachineFunction &  MF, MachineBasicBlock &  MBB, MachineBasicBlock::iterator  MI, const DebugLoc &  DL  )

static

Definition at line 83 of file RISCVFrameLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), llvm::RegState::Define, llvm::LLVMContext::diagnose(), DL, llvm::MachineInstr::FrameDestroy, llvm::MachineFrameInfo::getCalleeSavedInfo(), llvm::Function::getContext(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::CalleeSavedInfo::getReg(), llvm::RISCVABI::getSCSPReg(), llvm::MachineFunction::getSubtarget(), llvm::Function::hasFnAttribute(), llvm::ARM_MB::LD, MBB, MI, llvm::none_of(), llvm::MachineInstrBuilder::setMIFlag(), and TII.

Referenced by llvm::RISCVFrameLowering::emitEpilogue().

emitSCSPrologue()

static void emitSCSPrologue ( MachineFunction &  MF, MachineBasicBlock &  MBB, MachineBasicBlock::iterator  MI, const DebugLoc &  DL  )

static

Definition at line 32 of file RISCVFrameLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), llvm::RegState::Define, llvm::LLVMContext::diagnose(), DL, llvm::MachineInstr::FrameSetup, llvm::MachineFrameInfo::getCalleeSavedInfo(), llvm::Function::getContext(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::CalleeSavedInfo::getReg(), llvm::RISCVABI::getSCSPReg(), llvm::MachineFunction::getSubtarget(), llvm::Function::hasFnAttribute(), MBB, MI, llvm::none_of(), llvm::MachineInstrBuilder::setMIFlag(), and TII.

Referenced by llvm::RISCVFrameLowering::emitPrologue().

estimateFunctionSizeInBytes()

static unsigned estimateFunctionSizeInBytes ( const MachineFunction &  MF, const RISCVInstrInfo &  TII  )

static

Definition at line 1036 of file RISCVFrameLowering.cpp.

References MBB, MI, and TII.

Referenced by llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized().

getFPReg()

static Register getFPReg ( const RISCVSubtarget &  STI )

static

Definition at line 295 of file RISCVFrameLowering.cpp.

Referenced by llvm::RISCVFrameLowering::emitEpilogue(), llvm::RISCVFrameLowering::emitPrologue(), and llvm::RISCVFrameLowering::getFrameIndexReference().

getLibCallID()

static int getLibCallID ( const MachineFunction &  MF, const std::vector< CalleeSavedInfo > &  CSI  )

static

Definition at line 137 of file RISCVFrameLowering.cpp.

References llvm::MachineFunction::getInfo(), llvm::Register::id(), llvm_unreachable, and llvm::max().

Referenced by llvm::RISCVFrameLowering::emitPrologue(), getRestoreLibCallName(), and getSpillLibCallName().

getNonLibcallCSI()

static SmallVector<CalleeSavedInfo, 8> getNonLibcallCSI ( const MachineFunction &  MF, const std::vector< CalleeSavedInfo > &  CSI  )

static

Definition at line 301 of file RISCVFrameLowering.cpp.

References llvm::TargetStackID::Default, llvm::MachineFunction::getFrameInfo(), and llvm::MachineFrameInfo::getStackID().

Referenced by llvm::RISCVFrameLowering::emitEpilogue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::restoreCalleeSavedRegisters(), and llvm::RISCVFrameLowering::spillCalleeSavedRegisters().

getRestoreLibCallName()

static const char* getRestoreLibCallName ( const MachineFunction &  MF, const std::vector< CalleeSavedInfo > &  CSI  )

static

Definition at line 203 of file RISCVFrameLowering.cpp.

References getLibCallID().

Referenced by llvm::RISCVFrameLowering::restoreCalleeSavedRegisters().

getScavSlotsNumForRVV()

static unsigned getScavSlotsNumForRVV ( MachineFunction &  MF )

static

Definition at line 973 of file RISCVFrameLowering.cpp.

References llvm::MachineFunction::getSubtarget(), llvm::RISCVSubtarget::hasVInstructions(), llvm::RISCV::isRVVSpill(), llvm::max(), MBB, MI, and llvm::TargetStackID::ScalableVector.

Referenced by llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized().

getSpillLibCallName()

static const char* getSpillLibCallName ( const MachineFunction &  MF, const std::vector< CalleeSavedInfo > &  CSI  )

static

Definition at line 176 of file RISCVFrameLowering.cpp.

References getLibCallID().

Referenced by llvm::RISCVFrameLowering::spillCalleeSavedRegisters().

getSPReg()

static Register getSPReg ( const RISCVSubtarget &  STI )

static

Definition at line 298 of file RISCVFrameLowering.cpp.

Referenced by llvm::RISCVFrameLowering::emitEpilogue(), and llvm::RISCVFrameLowering::emitPrologue().

hasRVVFrameObject()

static bool hasRVVFrameObject ( const MachineFunction &  MF )

static

Definition at line 1017 of file RISCVFrameLowering.cpp.

References llvm::MachineFunction::getSubtarget().

Referenced by llvm::RISCVFrameLowering::hasReservedCallFrame(), and llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized().