SIFormMemoryClauses.cpp File Reference

This pass creates bundles of SMEM and VMEM instructions forming memory clauses if XNACK is enabled. More...

#include "AMDGPU.h"
#include "AMDGPUSubtarget.h"
#include "GCNRegPressure.h"
#include "SIInstrInfo.h"
#include "SIMachineFunctionInfo.h"
#include "SIRegisterInfo.h"
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/CodeGen/LiveIntervals.h"
#include "llvm/CodeGen/MachineFunctionPass.h"

Include dependency graph for SIFormMemoryClauses.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "si-form-memory-clauses"

Functions
	INITIALIZE_PASS_BEGIN (SIFormMemoryClauses, DEBUG_TYPE, "SI Form memory clauses", false, false) INITIALIZE_PASS_END(SIFormMemoryClauses
static bool	isVMEMClauseInst (const MachineInstr &MI)
static bool	isSMEMClauseInst (const MachineInstr &MI)
static bool	isValidClauseInst (const MachineInstr &MI, bool IsVMEMClause)
static unsigned	getMopState (const MachineOperand &MO)

Variables
static cl::opt< unsigned >	MaxClause ("amdgpu-max-memory-clause", cl::Hidden, cl::init(15), cl::desc("Maximum length of a memory clause, instructions"))
	DEBUG_TYPE
SI Form memory	clauses
SI Form memory	false

Detailed Description

This pass creates bundles of SMEM and VMEM instructions forming memory clauses if XNACK is enabled.

Def operands of clauses are marked as early clobber to make sure we will not override any source within a clause.

Definition in file SIFormMemoryClauses.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "si-form-memory-clauses"

Definition at line 30 of file SIFormMemoryClauses.cpp.

Function Documentation

getMopState()

static unsigned getMopState ( const MachineOperand &  MO )

static

Definition at line 125 of file SIFormMemoryClauses.cpp.

References llvm::GCNDownwardRPTracker::advanceToNext(), llvm::LaneBitmask::all(), B, llvm::BuildMI(), llvm::MachineInstr::bundleWithPred(), llvm::RegState::Dead, E, llvm::RegState::EarlyClobber, llvm::LaneBitmask::getAll(), llvm::MachineFunction::getFunction(), llvm::LaneBitmask::getHighestLane(), llvm::MachineFunction::getInfo(), llvm::LaneBitmask::getNumLanes(), llvm::GCNRegPressure::getOccupancy(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::GCNRegPressure::getSGPRNum(), llvm::MachineFunction::getSubtarget(), llvm::GCNRegPressure::getVGPRNum(), I, llvm::RegState::Implicit, llvm::MachineOperand::isDead(), llvm::MachineOperand::isEarlyClobber(), llvm::MachineOperand::isImplicit(), llvm::MachineOperand::isKill(), llvm::TargetRegisterInfo::isPhysicalRegister(), llvm::MachineOperand::isRenamable(), llvm::MachineOperand::isUndef(), isValidClauseInst(), llvm::TargetRegisterInfo::isVirtualRegister(), isVMEMClauseInst(), llvm::RegState::Kill, llvm_unreachable, llvm::BitmaskEnumDetail::Mask(), MaxClause, MI, llvm::GCNRPTracker::moveMaxPressure(), MRI, llvm::MachineInstr::operands(), llvm::SmallVectorTemplateBase< T >::push_back(), Reg, llvm::RegState::Renamable, llvm::GCNDownwardRPTracker::reset(), llvm::sort(), llvm::ARM_MB::ST, SubReg, TII, TRI, and llvm::RegState::Undef.

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	SIFormMemoryClauses	,
		DEBUG_TYPE	,
		"SI Form memory clauses"	,
		false	,
		false
	)

isSMEMClauseInst()

static bool isSMEMClauseInst ( const MachineInstr &  MI )

static

Definition at line 104 of file SIFormMemoryClauses.cpp.

References llvm::SIInstrInfo::isSMRD().

Referenced by isValidClauseInst().

isValidClauseInst()

static bool isValidClauseInst ( const MachineInstr &  MI, bool  IsVMEMClause  )

static

Definition at line 110 of file SIFormMemoryClauses.cpp.

References llvm::AMDGPU::getAtomicNoRetOp(), llvm::AMDGPU::getAtomicRetOp(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::isBundled(), llvm::MachineInstr::isDebugValue(), isSMEMClauseInst(), isVMEMClauseInst(), llvm::MachineInstr::mayLoad(), and llvm::MachineInstr::mayStore().

Referenced by getMopState().

isVMEMClauseInst()

static bool isVMEMClauseInst ( const MachineInstr &  MI )

static

Definition at line 100 of file SIFormMemoryClauses.cpp.

References llvm::SIInstrInfo::isFLAT(), and llvm::SIInstrInfo::isVMEM().

Referenced by getMopState(), and isValidClauseInst().

Variable Documentation

clauses

SI Form memory clauses

Definition at line 88 of file SIFormMemoryClauses.cpp.

DEBUG_TYPE

DEBUG_TYPE

Definition at line 88 of file SIFormMemoryClauses.cpp.

false

SI Form memory false

Definition at line 88 of file SIFormMemoryClauses.cpp.

MaxClause

cl::opt<unsigned> MaxClause("amdgpu-max-memory-clause", cl::Hidden, cl::init(15), cl::desc("Maximum length of a memory clause, instructions"))

static

Referenced by getMopState().