SILowerSGPRSpills.cpp File Reference

#include "SILowerSGPRSpills.h"
#include "AMDGPU.h"
#include "GCNSubtarget.h"
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "SIMachineFunctionInfo.h"
#include "llvm/CodeGen/LiveIntervals.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/InitializePasses.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "si-lower-sgpr-spills"

Typedefs
using	MBBVector = SmallVector<MachineBasicBlock *, 4>

Functions
	INITIALIZE_PASS_BEGIN (SILowerSGPRSpillsLegacy, DEBUG_TYPE, "SI lower SGPR spill instructions", false, false) INITIALIZE_PASS_END(SILowerSGPRSpillsLegacy
static bool	isLiveIntoMBB (MCRegister Reg, MachineBasicBlock &MBB, const TargetRegisterInfo *TRI)
static void	insertCSRSaves (MachineBasicBlock &SaveBlock, ArrayRef< CalleeSavedInfo > CSI, SlotIndexes *Indexes, LiveIntervals *LIS)
	Insert spill code for the callee-saved registers used in the function.
static void	insertCSRRestores (MachineBasicBlock &RestoreBlock, MutableArrayRef< CalleeSavedInfo > CSI, SlotIndexes *Indexes, LiveIntervals *LIS)
	Insert restore code for the callee-saved registers used in the function.
static void	updateLiveness (MachineFunction &MF, ArrayRef< CalleeSavedInfo > CSI)

Variables
	DEBUG_TYPE
SI lower SGPR spill	instructions
SI lower SGPR spill	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "si-lower-sgpr-spills"

Definition at line 31 of file SILowerSGPRSpills.cpp.

Typedef Documentation

MBBVector

using MBBVector = SmallVector<MachineBasicBlock *, 4>

Definition at line 33 of file SILowerSGPRSpills.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	SILowerSGPRSpillsLegacy	,
		DEBUG_TYPE	,
		"SI lower SGPR spill instructions"	,
		false	,
		false	)

References DEBUG_TYPE, and INITIALIZE_PASS_DEPENDENCY.

insertCSRRestores()

void insertCSRRestores ( MachineBasicBlock & RestoreBlock, MutableArrayRef< CalleeSavedInfo > CSI, SlotIndexes * Indexes, LiveIntervals * LIS )

static

Insert restore code for the callee-saved registers used in the function.

Definition at line 163 of file SILowerSGPRSpills.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::getFirstTerminator(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineBasicBlock::getParent(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), I, llvm::SlotIndexes::insertMachineInstrInMaps(), llvm::LiveIntervals::removeAllRegUnitsForPhysReg(), llvm::SlotIndexes::repairIndexesInRange(), llvm::TargetFrameLowering::restoreCalleeSavedRegister(), llvm::TargetFrameLowering::restoreCalleeSavedRegisters(), llvm::reverse(), TII, and TRI.

insertCSRSaves()

void insertCSRSaves ( MachineBasicBlock & SaveBlock, ArrayRef< CalleeSavedInfo > CSI, SlotIndexes * Indexes, LiveIntervals * LIS )

static

Insert spill code for the callee-saved registers used in the function.

Definition at line 114 of file SILowerSGPRSpills.cpp.

References assert(), llvm::MachineBasicBlock::begin(), llvm::MachineInstrSpan::begin(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineBasicBlock::getParent(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), I, llvm::SlotIndexes::insertMachineInstrInMaps(), isLiveIntoMBB(), Reg, llvm::LiveIntervals::removeAllRegUnitsForPhysReg(), llvm::SlotIndexes::repairIndexesInRange(), llvm::TargetFrameLowering::spillCalleeSavedRegisters(), TII, and TRI.

isLiveIntoMBB()

bool isLiveIntoMBB ( MCRegister Reg, MachineBasicBlock & MBB, const TargetRegisterInfo * TRI )

static

Definition at line 103 of file SILowerSGPRSpills.cpp.

References const, isLiveIntoMBB(), MBB, Reg, and TRI.

Referenced by insertCSRSaves(), and isLiveIntoMBB().

updateLiveness()

void updateLiveness ( MachineFunction & MF, ArrayRef< CalleeSavedInfo > CSI )

static

Definition at line 240 of file SILowerSGPRSpills.cpp.

References llvm::MachineBasicBlock::addLiveIn(), llvm::MachineFunction::front(), and llvm::MachineBasicBlock::sortUniqueLiveIns().

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 98 of file SILowerSGPRSpills.cpp.

false

SI lower SGPR spill false

Definition at line 99 of file SILowerSGPRSpills.cpp.

instructions

SI lower SGPR spill instructions

Definition at line 99 of file SILowerSGPRSpills.cpp.