SystemZElimCompare.cpp File Reference

#include "SystemZTargetMachine.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"

Include dependency graph for SystemZElimCompare.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "systemz-elim-compare"
Functions
	STATISTIC (BranchOnCounts,"Number of branch-on-count instructions")
	STATISTIC (EliminatedComparisons,"Number of eliminated comparisons")
	STATISTIC (FusedComparisons,"Number of fused compare-and-branch instructions")
static bool	isCCLiveOut (MachineBasicBlock &MBB)
static bool	resultTests (MachineInstr *MI, unsigned Reg, unsigned SubReg)
static bool	isCompareZero (MachineInstr *Compare)

---

Define Documentation

#define DEBUG_TYPE   "systemz-elim-compare"

Definition at line 29 of file SystemZElimCompare.cpp.

---

Function Documentation

static bool isCCLiveOut

(

MachineBasicBlock &

MBB

)

[static]

Definition at line 100 of file SystemZElimCompare.cpp.

References llvm::MachineBasicBlock::succ_begin(), and llvm::MachineBasicBlock::succ_end().

static bool isCompareZero

(

MachineInstr *

Compare

)

[static]

Definition at line 303 of file SystemZElimCompare.cpp.

References llvm::MachineOperand::getImm(), llvm::MachineInstr::getNumExplicitOperands(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), and llvm::MachineOperand::isImm().

static bool resultTests	(	MachineInstr *	MI,
		unsigned	Reg,
		unsigned	SubReg
	)		[static]

Definition at line 109 of file SystemZElimCompare.cpp.

References llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::getSubReg(), llvm::MachineOperand::isDef(), llvm::MachineOperand::isReg(), and llvm::MipsISD::LDR.

STATISTIC	(	BranchOnCounts	,
		"Number of branch-on-count instructions"
	)

STATISTIC	(	EliminatedComparisons	,
		"Number of eliminated comparisons"
	)

STATISTIC	(	FusedComparisons	,
		"Number of fused compare-and-branch instructions"
	)