SILowerSGPRSpills.cpp File Reference

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

Include dependency graph for SILowerSGPRSpills.cpp:

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 (SILowerSGPRSpills, DEBUG_TYPE, "SI lower SGPR spill instructions", false, false) INITIALIZE_PASS_END(SILowerSGPRSpills
static void	insertCSRSaves (MachineBasicBlock &SaveBlock, ArrayRef< CalleeSavedInfo > CSI, LiveIntervals *LIS)
	Insert restore code for the callee-saved registers used in the function. More...
static void	insertCSRRestores (MachineBasicBlock &RestoreBlock, MutableArrayRef< CalleeSavedInfo > CSI, LiveIntervals *LIS)
	Insert restore code for the callee-saved registers used in the function. More...
static void	updateLiveness (MachineFunction &MF, ArrayRef< CalleeSavedInfo > CSI)
static bool	lowerShiftReservedVGPR (MachineFunction &MF, const GCNSubtarget &ST)

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 28 of file SILowerSGPRSpills.cpp.

Typedef Documentation

MBBVector

using MBBVector = SmallVector<MachineBasicBlock *, 4>

Definition at line 30 of file SILowerSGPRSpills.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN()

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

insertCSRRestores()

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

static

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

Definition at line 121 of file SILowerSGPRSpills.cpp.

References assert(), llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::getFirstTerminator(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::TargetRegisterInfo::getMinimalPhysRegClass(), llvm::MachineBasicBlock::getParent(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), I, llvm::MVT::i32, llvm::LiveIntervals::InsertMachineInstrInMaps(), llvm::HexagonInstrInfo::loadRegFromStackSlot(), Reg, llvm::LiveIntervals::removeAllRegUnitsForPhysReg(), llvm::TargetFrameLowering::restoreCalleeSavedRegisters(), llvm::reverse(), TII, and TRI.

insertCSRSaves()

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

static

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

Definition at line 81 of file SILowerSGPRSpills.cpp.

References assert(), llvm::MachineInstrSpan::begin(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::TargetRegisterInfo::getMinimalPhysRegClass(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), I, llvm::MVT::i32, llvm::MachineRegisterInfo::isLiveIn(), MRI, Reg, llvm::TargetFrameLowering::spillCalleeSavedRegisters(), llvm::HexagonInstrInfo::storeRegToStackSlot(), TII, and TRI.

lowerShiftReservedVGPR()

static bool lowerShiftReservedVGPR ( MachineFunction &  MF, const GCNSubtarget &  ST  )

static

Definition at line 249 of file SILowerSGPRSpills.cpp.

References llvm::MachineBasicBlock::addLiveIn(), assert(), llvm::MachineFrameInfo::CreateSpillStackObject(), llvm::find_if(), llvm::MachineRegisterInfo::getCalleeSavedRegs(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getRegInfo(), llvm::SIMachineFunctionInfo::getSGPRSpillVGPRs(), Index, llvm::SIMachineFunctionInfo::isCalleeSavedReg(), llvm::Register::isValid(), MBB, llvm::SIMachineFunctionInfo::setSGPRSpillVGPRs(), llvm::MachineBasicBlock::sortUniqueLiveIns(), llvm::ARM_MB::ST, TRI, and llvm::SIMachineFunctionInfo::VGPRReservedForSGPRSpill.

updateLiveness()

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

static

Definition at line 189 of file SILowerSGPRSpills.cpp.

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

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 75 of file SILowerSGPRSpills.cpp.

false

SI lower SGPR spill false

Definition at line 76 of file SILowerSGPRSpills.cpp.

instructions

SI lower SGPR spill instructions

Definition at line 76 of file SILowerSGPRSpills.cpp.