M68kFrameLowering.cpp File Reference

This file contains the M68k implementation of TargetFrameLowering class. More...

#include "M68kFrameLowering.h"
#include "M68kInstrBuilder.h"
#include "M68kInstrInfo.h"
#include "M68kMachineFunction.h"
#include "M68kSubtarget.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/Alignment.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"

Go to the source code of this file.

Functions
static unsigned	findDeadCallerSavedReg (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const M68kRegisterInfo *TRI)
	Return a caller-saved register that isn't live when it reaches the "return" instruction.
static bool	isRegLiveIn (MachineBasicBlock &MBB, unsigned Reg)
static bool	isTailCallOpcode (unsigned Opc)

Detailed Description

This file contains the M68k implementation of TargetFrameLowering class.

Definition in file M68kFrameLowering.cpp.

Function Documentation

findDeadCallerSavedReg()

static unsigned findDeadCallerSavedReg ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator &  MBBI, const M68kRegisterInfo *  TRI  )

static

Return a caller-saved register that isn't live when it reaches the "return" instruction.

We can then pop a stack object to this register without worry about clobbering it.

Definition at line 137 of file M68kFrameLowering.cpp.

References llvm::MachineFunction::callsEHReturn(), llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isDef(), llvm::MachineOperand::isReg(), llvm::MCRegAliasIterator::isValid(), MBB, MBBI, TRI, and Uses.

Referenced by llvm::M68kFrameLowering::emitSPUpdate().

isRegLiveIn()

static bool isRegLiveIn ( MachineBasicBlock &  MBB, unsigned  Reg  )

static

Definition at line 176 of file M68kFrameLowering.cpp.

References llvm::any_of(), llvm::MachineBasicBlock::liveins(), and MBB.

Referenced by llvm::M68kFrameLowering::emitSPUpdate().

isTailCallOpcode()

static bool isTailCallOpcode ( unsigned  Opc )

static

Definition at line 667 of file M68kFrameLowering.cpp.

Referenced by llvm::M68kFrameLowering::emitEpilogue(), and llvm::X86FrameLowering::emitEpilogue().