SIOptimizeExecMasking.cpp File Reference

#include "AMDGPU.h"
#include "AMDGPUSubtarget.h"
#include "SIInstrInfo.h"
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/Debug.h"

Include dependency graph for SIOptimizeExecMasking.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "si-optimize-exec-masking"

Functions
	INITIALIZE_PASS_BEGIN (SIOptimizeExecMasking, DEBUG_TYPE, "SI optimize exec mask operations", false, false) INITIALIZE_PASS_END(SIOptimizeExecMasking
static unsigned	isCopyFromExec (const MachineInstr &MI, const GCNSubtarget &ST)
	If MI is a copy from exec, return the register copied to. More...
static unsigned	isCopyToExec (const MachineInstr &MI, const GCNSubtarget &ST)
	If MI is a copy to exec, return the register copied from. More...
static unsigned	isLogicalOpOnExec (const MachineInstr &MI)
	If MI is a logical operation on an exec value, return the register copied to. More...
static unsigned	getSaveExecOp (unsigned Opc)
static bool	removeTerminatorBit (const SIInstrInfo &TII, MachineInstr &MI)
static MachineBasicBlock::reverse_iterator	fixTerminators (const SIInstrInfo &TII, MachineBasicBlock &MBB)
static MachineBasicBlock::reverse_iterator	findExecCopy (const SIInstrInfo &TII, const GCNSubtarget &ST, MachineBasicBlock &MBB, MachineBasicBlock::reverse_iterator I, unsigned CopyToExec)
static bool	isLiveOut (const MachineBasicBlock &MBB, unsigned Reg)

Variables
	DEBUG_TYPE
SI optimize exec mask	operations
SI optimize exec mask	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "si-optimize-exec-masking"

Definition at line 21 of file SIOptimizeExecMasking.cpp.

Function Documentation

findExecCopy()

static MachineBasicBlock::reverse_iterator findExecCopy ( const SIInstrInfo &  TII, const GCNSubtarget &  ST, MachineBasicBlock &  MBB, MachineBasicBlock::reverse_iterator  I, unsigned  CopyToExec  )

static

Definition at line 243 of file SIOptimizeExecMasking.cpp.

References E, I, isCopyFromExec(), N, and llvm::MachineBasicBlock::rend().

Referenced by isLiveOut().

fixTerminators()

static MachineBasicBlock::reverse_iterator fixTerminators ( const SIInstrInfo &  TII, MachineBasicBlock &  MBB  )

static

Definition at line 228 of file SIOptimizeExecMasking.cpp.

References E, I, llvm::MachineBasicBlock::rbegin(), removeTerminatorBit(), and llvm::MachineBasicBlock::rend().

Referenced by isLiveOut().

getSaveExecOp()

static unsigned getSaveExecOp ( unsigned  Opc )

static

Definition at line 138 of file SIOptimizeExecMasking.cpp.

Referenced by isLiveOut().

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	SIOptimizeExecMasking	,
		DEBUG_TYPE	,
		"SI optimize exec mask operations"	,
		false	,
		false
	)

isCopyFromExec()

static unsigned isCopyFromExec ( const MachineInstr &  MI, const GCNSubtarget &  ST  )

static

If MI is a copy from exec, return the register copied to.

Definition at line 59 of file SIOptimizeExecMasking.cpp.

References llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), MI, and llvm::ARM_MB::ST.

Referenced by findExecCopy().

isCopyToExec()

static unsigned isCopyToExec ( const MachineInstr &  MI, const GCNSubtarget &  ST  )

static

If MI is a copy to exec, return the register copied from.

Definition at line 77 of file SIOptimizeExecMasking.cpp.

References llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), llvm::GCNSubtarget::isWave32(), and llvm_unreachable.

Referenced by isLiveOut().

isLiveOut()

static bool isLiveOut ( const MachineBasicBlock &  MBB, unsigned  Reg  )

static

Definition at line 264 of file SIOptimizeExecMasking.cpp.

References assert(), llvm::BuildMI(), llvm::dbgs(), E, llvm::MachineInstr::eraseFromParent(), findExecCopy(), fixTerminators(), llvm::MachineInstr::getDebugLoc(), llvm::MachineFunction::getFunction(), llvm::GCNSubtarget::getInstrInfo(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::GCNSubtarget::getRegisterInfo(), getSaveExecOp(), llvm::MachineFunction::getSubtarget(), I, llvm::MachineInstr::isCommutable(), isCopyToExec(), isLogicalOpOnExec(), llvm::MachineOperand::isReg(), llvm::GCNSubtarget::isWave32(), LLVM_DEBUG, llvm_unreachable, llvm::printReg(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::MachineInstr::readsRegister(), llvm::ARM_MB::ST, llvm::MachineBasicBlock::successors(), TII, and TRI.

Referenced by allPhiOperandsUndefined(), and createBBSelectReg().

isLogicalOpOnExec()

static unsigned isLogicalOpOnExec ( const MachineInstr &  MI )

static

If MI is a logical operation on an exec value, return the register copied to.

Definition at line 99 of file SIOptimizeExecMasking.cpp.

References llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), and llvm::MachineOperand::isReg().

Referenced by isLiveOut().

removeTerminatorBit()

static bool removeTerminatorBit ( const SIInstrInfo &  TII, MachineInstr &  MI  )

static

Definition at line 180 of file SIOptimizeExecMasking.cpp.

References llvm::MachineInstr::getOpcode(), and llvm::MachineInstr::setDesc().

Referenced by fixTerminators().

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 51 of file SIOptimizeExecMasking.cpp.

false

SI optimize exec mask false

Definition at line 51 of file SIOptimizeExecMasking.cpp.

operations

SI optimize exec mask operations

Definition at line 51 of file SIOptimizeExecMasking.cpp.