Thumb1FrameLowering.cpp File Reference

#include "Thumb1FrameLowering.h"
#include "ARMBaseInstrInfo.h"
#include "ARMBaseRegisterInfo.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMSubtarget.h"
#include "Thumb1InstrInfo.h"
#include "ThumbRegisterInfo.h"
#include "Utils/ARMBaseInfo.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/LivePhysRegs.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include <cassert>
#include <iterator>
#include <vector>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "arm-frame-lowering"

Functions
static void	emitPrologueEpilogueSPUpdate (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const TargetInstrInfo &TII, const DebugLoc &dl, const ThumbRegisterInfo &MRI, int NumBytes, unsigned ScratchReg, unsigned MIFlags)
static void	emitCallSPUpdate (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const TargetInstrInfo &TII, const DebugLoc &dl, const ThumbRegisterInfo &MRI, int NumBytes, unsigned MIFlags=MachineInstr::NoFlags)
static void	findTemporariesForLR (const BitVector &GPRsNoLRSP, const BitVector &PopFriendly, const LiveRegUnits &UsedRegs, unsigned &PopReg, unsigned &TmpReg, MachineRegisterInfo &MRI)
static void	splitLowAndHighRegs (const std::set< Register > &Regs, std::set< Register > &LowRegs, std::set< Register > &HighRegs)
template<typename It >
It	getNextOrderedReg (It OrderedStartIt, It OrderedEndIt, const std::set< Register > &RegSet)
static void	pushRegsToStack (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const TargetInstrInfo &TII, const std::set< Register > &RegsToSave, const std::set< Register > &CopyRegs, bool &UsedLRAsTemp)
static void	popRegsFromStack (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MI, const TargetInstrInfo &TII, const std::set< Register > &RegsToRestore, const std::set< Register > &AvailableCopyRegs, bool IsVarArg, bool HasV5Ops)

Variables
static const SmallVector< Register >	OrderedLowRegs
static const SmallVector< Register >	OrderedHighRegs
static const SmallVector< Register >	OrderedCopyRegs

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "arm-frame-lowering"

Definition at line 46 of file Thumb1FrameLowering.cpp.

Function Documentation

emitCallSPUpdate()

static void emitCallSPUpdate ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator &  MBBI, const TargetInstrInfo &  TII, const DebugLoc &  dl, const ThumbRegisterInfo &  MRI, int  NumBytes, unsigned  MIFlags = MachineInstr::NoFlags  )

static

Definition at line 105 of file Thumb1FrameLowering.cpp.

References llvm::emitThumbRegPlusImmediate(), MBB, MBBI, MRI, and TII.

Referenced by llvm::Thumb1FrameLowering::eliminateCallFramePseudoInstr().

emitPrologueEpilogueSPUpdate()

static void emitPrologueEpilogueSPUpdate ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator &  MBBI, const TargetInstrInfo &  TII, const DebugLoc &  dl, const ThumbRegisterInfo &  MRI, int  NumBytes, unsigned  ScratchReg, unsigned  MIFlags  )

static

Definition at line 67 of file Thumb1FrameLowering.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::emitThumbRegPlusImmediate(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getSubtarget(), llvm::RegState::Kill, MBB, MBBI, MRI, llvm::predOps(), llvm::report_fatal_error(), llvm::MachineInstrBuilder::setMIFlags(), and TII.

Referenced by llvm::Thumb1FrameLowering::emitEpilogue(), and llvm::Thumb1FrameLowering::emitPrologue().

findTemporariesForLR()

static void findTemporariesForLR ( const BitVector &  GPRsNoLRSP, const BitVector &  PopFriendly, const LiveRegUnits &  UsedRegs, unsigned &  PopReg, unsigned &  TmpReg, MachineRegisterInfo &  MRI  )

static

Definition at line 623 of file Thumb1FrameLowering.cpp.

References llvm::LiveRegUnits::available(), llvm::BitVector::set_bits(), and llvm::BitVector::test().

getNextOrderedReg()

template<typename It >

It getNextOrderedReg	(	It	OrderedStartIt,
		It	OrderedEndIt,
		const std::set< Register > &	RegSet
	)

Definition at line 866 of file Thumb1FrameLowering.cpp.

Referenced by popRegsFromStack(), pushRegsToStack(), and llvm::Thumb1FrameLowering::spillCalleeSavedRegisters().

popRegsFromStack()

static void popRegsFromStack ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator &  MI, const TargetInstrInfo &  TII, const std::set< Register > &  RegsToRestore, const std::set< Register > &  AvailableCopyRegs, bool  IsVarArg, bool  HasV5Ops  )

static

Definition at line 965 of file Thumb1FrameLowering.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::MachineInstrBuilder::copyImplicitOps(), llvm::RegState::Define, llvm::MachineFunction::deleteMachineInstr(), DL, llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::erase(), llvm::MachineInstr::FrameDestroy, llvm::getDefRegState(), llvm::MachineFunction::getInfo(), getNextOrderedReg(), llvm::MachineBasicBlock::getParent(), llvm::MachineBasicBlock::insert(), llvm::ARMFunctionInfo::isCmseNSEntryFunction(), llvm::Register::isValid(), llvm::RegState::Kill, MBB, MI, OrderedCopyRegs, OrderedHighRegs, OrderedLowRegs, llvm::predOps(), llvm::MachineInstrBuilder::setMIFlag(), splitLowAndHighRegs(), llvm::MachineBasicBlock::succ_empty(), and TII.

Referenced by llvm::Thumb1FrameLowering::restoreCalleeSavedRegisters().

pushRegsToStack()

static void pushRegsToStack ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator  MI, const TargetInstrInfo &  TII, const std::set< Register > &  RegsToSave, const std::set< Register > &  CopyRegs, bool &  UsedLRAsTemp  )

static

Definition at line 872 of file Thumb1FrameLowering.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineBasicBlock::addLiveIn(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::RegState::Define, DL, llvm::MachineInstr::FrameSetup, llvm::getKillRegState(), getNextOrderedReg(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getRegInfo(), llvm::MachineBasicBlock::insert(), llvm::RegState::Kill, MBB, MI, MRI, OrderedCopyRegs, OrderedHighRegs, OrderedLowRegs, llvm::predOps(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::reverse(), llvm::MachineInstrBuilder::setMIFlags(), splitLowAndHighRegs(), and TII.

Referenced by llvm::Thumb1FrameLowering::spillCalleeSavedRegisters().

splitLowAndHighRegs()

static void splitLowAndHighRegs ( const std::set< Register > &  Regs, std::set< Register > &  LowRegs, std::set< Register > &  HighRegs  )

static

Definition at line 851 of file Thumb1FrameLowering.cpp.

References contains(), and llvm_unreachable.

Referenced by popRegsFromStack(), and pushRegsToStack().

Variable Documentation

OrderedCopyRegs

const SmallVector<Register> OrderedCopyRegs

static

Initial value:

= {
    ARM::R0, ARM::R1, ARM::R2, ARM::R3, ARM::R4,
    ARM::R5, ARM::R6, ARM::R7, ARM::LR}

Definition at line 847 of file Thumb1FrameLowering.cpp.

Referenced by popRegsFromStack(), pushRegsToStack(), and llvm::Thumb1FrameLowering::spillCalleeSavedRegisters().

OrderedHighRegs

const SmallVector<Register> OrderedHighRegs

static

Initial value:

= {ARM::R8, ARM::R9,
                                                      ARM::R10, ARM::R11}

Definition at line 845 of file Thumb1FrameLowering.cpp.

Referenced by popRegsFromStack(), and pushRegsToStack().

OrderedLowRegs

const SmallVector<Register> OrderedLowRegs

static

Initial value:

= {ARM::R4, ARM::R5, ARM::R6,
                                                     ARM::R7, ARM::LR}

Definition at line 843 of file Thumb1FrameLowering.cpp.

Referenced by popRegsFromStack(), and pushRegsToStack().