MipsOptimizePICCall.cpp File Reference

#include "Mips.h"
#include "MCTargetDesc/MipsBaseInfo.h"
#include "MipsMachineFunction.h"
#include "MipsTargetMachine.h"
#include "llvm/ADT/ScopedHashTable.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/CommandLine.h"

Include dependency graph for MipsOptimizePICCall.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "optimize-mips-pic-call"
Functions
static MachineOperand *	getCallTargetRegOpnd (MachineInstr &MI)
	Return the first MachineOperand of MI if it is a used virtual register.
static MVT::SimpleValueType	getRegTy (unsigned Reg, MachineFunction &MF)
	Return type of register Reg.
static void	setCallTargetReg (MachineBasicBlock *MBB, MachineBasicBlock::iterator I)
static void	eraseGPOpnd (MachineInstr &MI)
	Search MI's operands for register GP and erase it.
Variables
static cl::opt< bool >	LoadTargetFromGOT ("mips-load-target-from-got", cl::init(true), cl::desc("Load target address from GOT"), cl::Hidden)
static cl::opt< bool >	EraseGPOpnd ("mips-erase-gp-opnd", cl::init(true), cl::desc("Erase GP Operand"), cl::Hidden)

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Define Documentation

#define DEBUG_TYPE   "optimize-mips-pic-call"

Definition at line 26 of file MipsOptimizePICCall.cpp.

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Function Documentation

static void eraseGPOpnd

(

MachineInstr &

MI

)

[static]

Search MI's operands for register GP and erase it.

Definition at line 142 of file MipsOptimizePICCall.cpp.

References EraseGPOpnd, llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), getRegTy(), I, llvm::MVT::i32, llvm::MachineOperand::isReg(), llvm_unreachable, and llvm::MachineInstr::RemoveOperand().

static MachineOperand* getCallTargetRegOpnd

(

MachineInstr &

MI

)

[static]

Return the first MachineOperand of MI if it is a used virtual register.

Definition at line 104 of file MipsOptimizePICCall.cpp.

References llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), llvm::MachineOperand::isUse(), and llvm::TargetRegisterInfo::isVirtualRegister().

static MVT::SimpleValueType getRegTy	(	unsigned	Reg,
		MachineFunction &	MF
	)		[static]

Return type of register Reg.

Definition at line 118 of file MipsOptimizePICCall.cpp.

References llvm::MachineRegisterInfo::getRegClass(), llvm::MachineFunction::getRegInfo(), llvm::TargetRegisterClass::vt_begin(), and llvm::TargetRegisterClass::vt_end().

Referenced by eraseGPOpnd(), and setCallTargetReg().

static void setCallTargetReg	(	MachineBasicBlock *	MBB,
		MachineBasicBlock::iterator	I
	)		[static]

Do the following transformation:

jalr $vreg => copy $t9, $vreg jalr $t9

Definition at line 130 of file MipsOptimizePICCall.cpp.

References llvm::BuildMI(), llvm::TargetOpcode::COPY, llvm::MCInstrInfo::get(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineBasicBlock::getParent(), getRegTy(), llvm::MachineFunction::getSubtarget(), llvm::MVT::i32, and TII.

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Variable Documentation

cl::opt<bool> EraseGPOpnd("mips-erase-gp-opnd", cl::init(true), cl::desc("Erase GP Operand"), cl::Hidden) [static]

Referenced by eraseGPOpnd().

cl::opt<bool> LoadTargetFromGOT("mips-load-target-from-got", cl::init(true), cl::desc("Load target address from GOT"), cl::Hidden) [static]