Thumb1RegisterInfo.cpp File Reference

#include "Thumb1RegisterInfo.h"
#include "ARM.h"
#include "ARMBaseInstrInfo.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMSubtarget.h"
#include "MCTargetDesc/ARMAddressingModes.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"

Include dependency graph for Thumb1RegisterInfo.cpp:

Go to the source code of this file.

Namespaces
	llvm
	List of target independent CodeGen pass IDs.

Functions
static void	emitThumbRegPlusImmInReg (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, DebugLoc dl, unsigned DestReg, unsigned BaseReg, int NumBytes, bool CanChangeCC, const TargetInstrInfo &TII, const ARMBaseRegisterInfo &MRI, unsigned MIFlags=MachineInstr::NoFlags)
static unsigned	calcNumMI (int Opc, int ExtraOpc, unsigned Bytes, unsigned NumBits, unsigned Scale)
static void	emitThumbConstant (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, unsigned DestReg, int Imm, const TargetInstrInfo &TII, const Thumb1RegisterInfo &MRI, DebugLoc dl)
static void	removeOperands (MachineInstr &MI, unsigned i)
static unsigned	convertToNonSPOpcode (unsigned Opcode)

Variables
cl::opt< bool >	llvm::ReuseFrameIndexVals

Function Documentation

static unsigned calcNumMI ( int  Opc, int  ExtraOpc, unsigned  Bytes, unsigned  NumBits, unsigned  Scale  )

static

calcNumMI - Returns the number of instructions required to materialize the specific add / sub r, c instruction.

Definition at line 143 of file Thumb1RegisterInfo.cpp.

Referenced by llvm::Thumb1RegisterInfo::rewriteFrameIndex().

static unsigned convertToNonSPOpcode ( unsigned  Opcode )

static

convertToNonSPOpcode - Change the opcode to the non-SP version, because we're replacing the frame index with a non-SP register.

Definition at line 333 of file Thumb1RegisterInfo.cpp.

Referenced by llvm::Thumb1RegisterInfo::rewriteFrameIndex().

static void emitThumbConstant ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator &  MBBI, unsigned  DestReg, int  Imm, const TargetInstrInfo &  TII, const Thumb1RegisterInfo &  MRI, DebugLoc  dl  )

static

emitThumbConstant - Emit a series of instructions to materialize a constant.

Definition at line 301 of file Thumb1RegisterInfo.cpp.

References llvm::AddDefaultPred(), llvm::AddDefaultT1CC(), llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::emitThumbRegPlusImmediate(), llvm::MCInstrInfo::get(), and llvm::RegState::Kill.

Referenced by llvm::Thumb1RegisterInfo::rewriteFrameIndex().

static void emitThumbRegPlusImmInReg ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator &  MBBI, DebugLoc  dl, unsigned  DestReg, unsigned  BaseReg, int  NumBytes, bool  CanChangeCC, const TargetInstrInfo &  TII, const ARMBaseRegisterInfo &  MRI, unsigned  MIFlags = MachineInstr::NoFlags  )

static

emitThumbRegPlusImmInReg - Emits a series of instructions to materialize a destreg = basereg + immediate in Thumb code. Materialize the immediate in a register using mov / mvn sequences or load the immediate from a constpool entry.

Definition at line 90 of file Thumb1RegisterInfo.cpp.

References llvm::AddDefaultPred(), llvm::AddDefaultT1CC(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::ARMBaseRegisterInfo::emitLoadConstPool(), llvm::MCInstrInfo::get(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), llvm::isARMLowRegister(), llvm::RegState::Kill, and llvm::MachineInstrBuilder::setMIFlags().

Referenced by llvm::Thumb1RegisterInfo::eliminateFrameIndex().

static void removeOperands ( MachineInstr &  MI, unsigned  i  )

static

Definition at line 325 of file Thumb1RegisterInfo.cpp.

References llvm::MachineInstr::getNumOperands(), and llvm::MachineInstr::RemoveOperand().

Referenced by llvm::Thumb1RegisterInfo::eliminateFrameIndex(), and llvm::Thumb1RegisterInfo::rewriteFrameIndex().