#include "SIFrameLowering.h"
#include "AMDGPUSubtarget.h"
#include "SIInstrInfo.h"
#include "SIMachineFunctionInfo.h"
#include "SIRegisterInfo.h"
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "llvm/CodeGen/LivePhysRegs.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/RegisterScavenging.h"

Include dependency graph for SIFrameLowering.cpp:

Macros
#define	DEBUG_TYPE "frame-info"

Functions
static ArrayRef< MCPhysReg >	getAllSGPR128 (const GCNSubtarget &ST, const MachineFunction &MF)

static ArrayRef< MCPhysReg >	getAllSGPRs (const GCNSubtarget &ST, const MachineFunction &MF)

static unsigned	findScratchNonCalleeSaveRegister (MachineRegisterInfo &MRI, LivePhysRegs &LiveRegs, const TargetRegisterClass &RC, bool Unused=false)

static MCPhysReg	findUnusedSGPRNonCalleeSaved (MachineRegisterInfo &MRI)

static void	buildPrologSpill (LivePhysRegs &LiveRegs, MachineBasicBlock &MBB, MachineBasicBlock::iterator I, const SIInstrInfo *TII, unsigned SpillReg, unsigned ScratchRsrcReg, unsigned SPReg, int FI)

static void	buildEpilogReload (LivePhysRegs &LiveRegs, MachineBasicBlock &MBB, MachineBasicBlock::iterator I, const SIInstrInfo *TII, unsigned SpillReg, unsigned ScratchRsrcReg, unsigned SPReg, int FI)

static bool	allStackObjectsAreDead (const MachineFrameInfo &MFI)

static bool	allSGPRSpillsAreDead (const MachineFrameInfo &MFI, Optional< int > FramePointerSaveIndex)

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "frame-info"

Definition at line 24 of file SIFrameLowering.cpp.

Function Documentation

◆ allSGPRSpillsAreDead()

static bool allSGPRSpillsAreDead	(	const MachineFrameInfo &	MFI,
		Optional< int >	FramePointerSaveIndex
	)

static

Definition at line 928 of file SIFrameLowering.cpp.

References E, llvm::MachineFrameInfo::getObjectIndexBegin(), llvm::MachineFrameInfo::getObjectIndexEnd(), llvm::MachineFrameInfo::getStackID(), I, llvm::MachineFrameInfo::isDeadObjectIndex(), and llvm::TargetStackID::SGPRSpill.

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

◆ allStackObjectsAreDead()

static bool allStackObjectsAreDead ( const MachineFrameInfo & MFI )

static

Definition at line 917 of file SIFrameLowering.cpp.

References E, llvm::MachineFrameInfo::getObjectIndexBegin(), llvm::MachineFrameInfo::getObjectIndexEnd(), I, and llvm::MachineFrameInfo::isDeadObjectIndex().

Referenced by llvm::SIFrameLowering::determineCalleeSaves(), and llvm::SIFrameLowering::processFunctionBeforeFrameFinalized().

◆ buildEpilogReload()

static void buildEpilogReload	(	LivePhysRegs &	LiveRegs,
		MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	I,
		const SIInstrInfo *	TII,
		unsigned	SpillReg,
		unsigned	ScratchRsrcReg,
		unsigned	SPReg,
		int	FI
	)

static

Definition at line 140 of file SIFrameLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineBasicBlock::addLiveIn(), llvm::MachineRegisterInfo::addLiveIn(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::ArrayRef< T >::drop_back(), findScratchNonCalleeSaveRegister(), llvm::AMDGPUFunctionArgInfo::FLAT_SCRATCH_INIT, llvm::GCNSubtarget::flatScratchIsPointer(), getAllSGPR128(), getAllSGPRs(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::GCNSubtarget::getGeneration(), llvm::MachineFunction::getInfo(), llvm::GCNSubtarget::getInstrInfo(), llvm::MachineFunction::getMachineMemOperand(), llvm::SIMachineFunctionInfo::getNumPreloadedSGPRs(), llvm::MachineFrameInfo::getObjectAlignment(), llvm::MachineFrameInfo::getObjectOffset(), llvm::MachineBasicBlock::getParent(), llvm::SIMachineFunctionInfo::getPreloadedReg(), llvm::MachineFunction::getRegInfo(), llvm::SIInstrInfo::getRegisterInfo(), llvm::SIMachineFunctionInfo::getScratchRSrcReg(), llvm::SIMachineFunctionInfo::getScratchWaveOffsetReg(), llvm::SIMachineFunctionInfo::getStackPtrOffsetReg(), llvm::AMDGPUSubtarget::GFX10, llvm::SIFrameLowering::hasFP(), llvm::GCNSubtarget::hasSGPRInitBug(), I, llvm::AMDGPU::Hwreg::ID_FLAT_SCR_HI, llvm::AMDGPU::Hwreg::ID_FLAT_SCR_LO, llvm::MachineRegisterInfo::isAllocatable(), llvm::AMDGPUMachineFunction::isEntryFunction(), llvm::MachineRegisterInfo::isPhysRegUsed(), llvm::RegState::Kill, llvm::MachineMemOperand::MOLoad, MRI, Reg, llvm::MachineRegisterInfo::replaceRegWith(), llvm::SIRegisterInfo::reservedPrivateSegmentBufferReg(), llvm::SIRegisterInfo::reservedPrivateSegmentWaveByteOffsetReg(), llvm::SIMachineFunctionInfo::setFrameOffsetReg(), llvm::SIMachineFunctionInfo::setScratchRSrcReg(), llvm::SIMachineFunctionInfo::setScratchWaveOffsetReg(), llvm::SIMachineFunctionInfo::setStackPtrOffsetReg(), llvm::ArrayRef< T >::size(), llvm::ArrayRef< T >::slice(), llvm::ARM_MB::ST, TII, TRI, and llvm::AMDGPU::Hwreg::WIDTH_M1_SHIFT_.

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

◆ buildPrologSpill()

static void buildPrologSpill	(	LivePhysRegs &	LiveRegs,
		MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	I,
		const SIInstrInfo *	TII,
		unsigned	SpillReg,
		unsigned	ScratchRsrcReg,
		unsigned	SPReg,
		int	FI
	)

static

Definition at line 92 of file SIFrameLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMemOperand(), llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), findScratchNonCalleeSaveRegister(), llvm::MachinePointerInfo::getFixedStack(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getMachineMemOperand(), llvm::MachineFrameInfo::getObjectAlignment(), llvm::MachineFrameInfo::getObjectOffset(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), llvm::RegState::Kill, and llvm::MachineMemOperand::MOStore.

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

◆ findScratchNonCalleeSaveRegister()

static unsigned findScratchNonCalleeSaveRegister	(	MachineRegisterInfo &	MRI,
		LivePhysRegs &	LiveRegs,
		const TargetRegisterClass &	RC,
		bool	Unused = `false`
	)