LLVM 22.0.0git
Macros | Functions | Variables
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/CFIInstBuilder.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/TargetSubtargetInfo.h"
#include "llvm/IR/DebugLoc.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 43 of file Thumb1FrameLowering.cpp.

Function Documentation

◆ emitCallSPUpdate()

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 102 of file Thumb1FrameLowering.cpp.

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

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

◆ emitPrologueEpilogueSPUpdate()

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 64 of file Thumb1FrameLowering.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::emitThumbRegPlusImmediate(), 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()

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

Definition at line 583 of file Thumb1FrameLowering.cpp.

References llvm::LiveRegUnits::available(), MRI, Reg, 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 826 of file Thumb1FrameLowering.cpp.

References Reg.

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

◆ popRegsFromStack()

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 925 of file Thumb1FrameLowering.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::MachineInstrBuilder::copyImplicitOps(), llvm::dwarf_linker::DebugLoc, llvm::RegState::Define, DL, llvm::MachineInstr::FrameDestroy, llvm::getDefRegState(), llvm::MachineFunction::getInfo(), getNextOrderedReg(), llvm::ARMFunctionInfo::isCmseNSEntryFunction(), llvm::Register::isValid(), llvm::RegState::Kill, MBB, MI, OrderedCopyRegs, OrderedHighRegs, OrderedLowRegs, llvm::predOps(), Reg, llvm::MachineInstrBuilder::setMIFlag(), splitLowAndHighRegs(), and TII.

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

◆ pushRegsToStack()

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 832 of file Thumb1FrameLowering.cpp.

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

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

◆ splitLowAndHighRegs()

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

Definition at line 811 of file Thumb1FrameLowering.cpp.

References contains(), llvm_unreachable, and Reg.

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 807 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 805 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 803 of file Thumb1FrameLowering.cpp.

Referenced by popRegsFromStack(), and pushRegsToStack().

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