ThumbRegisterInfo.cpp File Reference

#include "ThumbRegisterInfo.h"
#include "ARMBaseInstrInfo.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMSubtarget.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/CodeGen/TargetFrameLowering.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetMachine.h"

Go to the source code of this file.

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Functions
static void	emitThumb1LoadConstPool (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const DebugLoc &dl, unsigned DestReg, unsigned SubIdx, int Val, ARMCC::CondCodes Pred, unsigned PredReg, unsigned MIFlags)
static void	emitThumb2LoadConstPool (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const DebugLoc &dl, unsigned DestReg, unsigned SubIdx, int Val, ARMCC::CondCodes Pred, unsigned PredReg, unsigned MIFlags)
static void	emitThumbRegPlusImmInReg (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const DebugLoc &dl, Register DestReg, Register BaseReg, int NumBytes, bool CanChangeCC, const TargetInstrInfo &TII, const ARMBaseRegisterInfo &MRI, unsigned MIFlags=MachineInstr::NoFlags)
	emitThumbRegPlusImmInReg - Emits a series of instructions to materialize a destreg = basereg + immediate in Thumb code.
static void	removeOperands (MachineInstr &MI, unsigned i)
static unsigned	convertToNonSPOpcode (unsigned Opcode)
	convertToNonSPOpcode - Change the opcode to the non-SP version, because we're replacing the frame index with a non-SP register.

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

Function Documentation

convertToNonSPOpcode()

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 410 of file ThumbRegisterInfo.cpp.

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

emitThumb1LoadConstPool()

void emitThumb1LoadConstPool ( MachineBasicBlock & MBB, MachineBasicBlock::iterator & MBBI, const DebugLoc & dl, unsigned DestReg, unsigned SubIdx, int Val, ARMCC::CondCodes Pred, unsigned PredReg, unsigned MIFlags )

static

Definition at line 59 of file ThumbRegisterInfo.cpp.

References llvm::MachineInstrBuilder::addConstantPoolIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), llvm::CallingConv::C, llvm::MachineFunction::getConstantPool(), llvm::getDefRegState(), llvm::ARMSubtarget::getInstrInfo(), llvm::Type::getInt32Ty(), llvm::MachineFunction::getSubtarget(), MBB, MBBI, llvm::MachineInstrBuilder::setMIFlags(), and TII.

Referenced by llvm::ThumbRegisterInfo::emitLoadConstPool().

emitThumb2LoadConstPool()

void emitThumb2LoadConstPool ( MachineBasicBlock & MBB, MachineBasicBlock::iterator & MBBI, const DebugLoc & dl, unsigned DestReg, unsigned SubIdx, int Val, ARMCC::CondCodes Pred, unsigned PredReg, unsigned MIFlags )

static

Definition at line 79 of file ThumbRegisterInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addConstantPoolIndex(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::CallingConv::C, llvm::MachineFunction::getConstantPool(), llvm::getDefRegState(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::Type::getInt32Ty(), llvm::MachineFunction::getSubtarget(), MBB, MBBI, llvm::predOps(), llvm::MachineInstrBuilder::setMIFlags(), and TII.

Referenced by llvm::ThumbRegisterInfo::emitLoadConstPool().

emitThumbRegPlusImmInReg()

void emitThumbRegPlusImmInReg ( MachineBasicBlock & MBB, MachineBasicBlock::iterator & MBBI, const DebugLoc & dl, Register DestReg, Register 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 (armv6-M >) sequences, movs / lsls / adds / lsls / adds / lsls / adds sequences (armv6-M) or load the immediate from a constpool entry.

Definition at line 122 of file ThumbRegisterInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::any_of(), assert(), llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::RegState::Implicit, llvm::isARMLowRegister(), llvm::Register::isVirtual(), llvm::RegState::Kill, MBB, MBBI, MRI, llvm::MachineInstr::NoFlags, Opc, llvm::predOps(), llvm::MachineInstrBuilder::setMIFlags(), llvm::t1CondCodeOp(), and TII.

Referenced by llvm::ThumbRegisterInfo::eliminateFrameIndex(), and llvm::emitThumbRegPlusImmediate().

removeOperands()

void removeOperands ( MachineInstr & MI, unsigned i )

static

Definition at line 402 of file ThumbRegisterInfo.cpp.

References MI.

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