Thumb2SizeReduction.cpp File Reference

#include "ARM.h"
#include "ARMBaseInstrInfo.h"
#include "ARMBaseRegisterInfo.h"
#include "ARMSubtarget.h"
#include "MCTargetDesc/ARMAddressingModes.h"
#include "Thumb2InstrInfo.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/PostOrderIterator.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

Include dependency graph for Thumb2SizeReduction.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "t2-reduce-size"

Functions
	STATISTIC (NumNarrows,"Number of 32-bit instrs reduced to 16-bit ones")
	STATISTIC (Num2Addrs,"Number of 32-bit instrs reduced to 2addr 16-bit ones")
	STATISTIC (NumLdSts,"Number of 32-bit load / store reduced to 16-bit ones")
static bool	HasImplicitCPSRDef (const MCInstrDesc &MCID)
static bool	isHighLatencyCPSR (MachineInstr *Def)
static bool	VerifyLowRegs (MachineInstr *MI)
static bool	UpdateCPSRDef (MachineInstr &MI, bool LiveCPSR, bool &DefCPSR)
static bool	UpdateCPSRUse (MachineInstr &MI, bool LiveCPSR)

Variables
static cl::opt< int >	ReduceLimit ("t2-reduce-limit", cl::init(-1), cl::Hidden)
static cl::opt< int >	ReduceLimit2Addr ("t2-reduce-limit2", cl::init(-1), cl::Hidden)
static cl::opt< int >	ReduceLimitLdSt ("t2-reduce-limit3", cl::init(-1), cl::Hidden)

Macro Definition Documentation

#define DEBUG_TYPE   "t2-reduce-size"

Definition at line 10 of file Thumb2SizeReduction.cpp.

Function Documentation

static bool HasImplicitCPSRDef ( const MCInstrDesc &  MCID )

static

Definition at line 213 of file Thumb2SizeReduction.cpp.

References llvm::MCInstrDesc::getImplicitDefs().

static bool isHighLatencyCPSR ( MachineInstr *  Def )

static

Definition at line 221 of file Thumb2SizeReduction.cpp.

References llvm::ARMISD::FMSTAT, and llvm::MachineInstr::getOpcode().

STATISTIC	(	NumNarrows	,
		"Number of 32-bit instrs reduced to 16-bit ones"
	)

STATISTIC	(	Num2Addrs	,
		"Number of 32-bit instrs reduced to 2addr 16-bit ones"
	)

STATISTIC	(	NumLdSts	,
		"Number of 32-bit load / store reduced to 16-bit ones"
	)

static bool UpdateCPSRDef ( MachineInstr &  MI, bool  LiveCPSR, bool &  DefCPSR  )

static

Definition at line 859 of file Thumb2SizeReduction.cpp.

References llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isDead(), llvm::MachineOperand::isReg(), llvm::MachineOperand::isUndef(), and llvm::MachineOperand::isUse().

static bool UpdateCPSRUse ( MachineInstr &  MI, bool  LiveCPSR  )

static

Definition at line 876 of file Thumb2SizeReduction.cpp.

References llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isDef(), llvm::MachineOperand::isKill(), llvm::MachineOperand::isReg(), and llvm::MachineOperand::isUndef().

static bool VerifyLowRegs ( MachineInstr *  MI )

static

Definition at line 335 of file Thumb2SizeReduction.cpp.

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

Variable Documentation

cl::opt<int> ReduceLimit("t2-reduce-limit", cl::init(-1), cl::Hidden)

static

cl::opt<int> ReduceLimit2Addr("t2-reduce-limit2", cl::init(-1), cl::Hidden)

static

cl::opt<int> ReduceLimitLdSt("t2-reduce-limit3", cl::init(-1), cl::Hidden)

static