MipsOptimizePICCall.cpp File Reference

#include "MCTargetDesc/MipsBaseInfo.h"
#include "Mips.h"
#include "MipsRegisterInfo.h"
#include "MipsSubtarget.h"
#include "llvm/ADT/PointerUnion.h"
#include "llvm/ADT/ScopedHashTable.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MachineValueType.h"
#include "llvm/Support/RecyclingAllocator.h"
#include <cassert>
#include <utility>
#include <vector>

Include dependency graph for MipsOptimizePICCall.cpp:

Go to the source code of this file.

Macros
#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. More...
static MVT::SimpleValueType	getRegTy (unsigned Reg, MachineFunction &MF)
	Return type of register Reg. More...
static void	setCallTargetReg (MachineBasicBlock *MBB, MachineBasicBlock::iterator I)
	Do the following transformation: More...
static void	eraseGPOpnd (MachineInstr &MI)
	Search MI's operands for register GP and erase it. More...

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)

Macro Definition Documentation

DEBUG_TYPE

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

Definition at line 45 of file MipsOptimizePICCall.cpp.

Function Documentation

eraseGPOpnd()

static void eraseGPOpnd ( MachineInstr &  MI )

static

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

Definition at line 164 of file MipsOptimizePICCall.cpp.

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

getCallTargetRegOpnd()

static MachineOperand* getCallTargetRegOpnd ( MachineInstr &  MI )

static

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

Definition at line 125 of file MipsOptimizePICCall.cpp.

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

getRegTy()

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

static

Return type of register Reg.

Definition at line 139 of file MipsOptimizePICCall.cpp.

References assert(), llvm::MachineRegisterInfo::getRegClass(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::TargetRegisterInfo::legalclasstypes_begin(), llvm::TargetRegisterInfo::legalclasstypes_end(), and TRI.

Referenced by eraseGPOpnd(), and setCallTargetReg().

setCallTargetReg()

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

static

Do the following transformation:

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

Definition at line 152 of file MipsOptimizePICCall.cpp.

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

Variable Documentation

EraseGPOpnd

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

static

Referenced by eraseGPOpnd().

LoadTargetFromGOT

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

static