llvm::MBlazeFrameLowering Class Reference

#include <MBlazeFrameLowering.h>

Inheritance diagram for llvm::MBlazeFrameLowering:

Collaboration diagram for llvm::MBlazeFrameLowering:

List of all members.

Public Member Functions
	MBlazeFrameLowering (const MBlazeSubtarget &sti)
bool	targetHandlesStackFrameRounding () const
void	emitPrologue (MachineFunction &MF) const
void	emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const
void	eliminateCallFramePseudoInstr (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const
bool	hasFP (const MachineFunction &MF) const
int	getFrameIndexOffset (const MachineFunction &MF, int FI) const
virtual void	processFunctionBeforeCalleeSavedScan (MachineFunction &MF, RegScavenger *RS) const
Protected Attributes
const MBlazeSubtarget &	STI

---

Detailed Description

Definition at line 23 of file MBlazeFrameLowering.h.

---

Constructor & Destructor Documentation

llvm::MBlazeFrameLowering::MBlazeFrameLowering

(

const MBlazeSubtarget &

sti

)

[inline, explicit]

Definition at line 28 of file MBlazeFrameLowering.h.

---

Member Function Documentation

void MBlazeFrameLowering::eliminateCallFramePseudoInstr	(	MachineFunction &	MF,
		MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	MI
	)		const [virtual]

eliminateCallFramePseudoInstr - This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy pseudo instructions (but only if the Target is using them). It is responsible for eliminating these instructions, replacing them with concrete instructions. This method need only be implemented if using call frame setup/destroy pseudo instructions.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 431 of file MBlazeFrameLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), Align(), llvm::BuildMI(), llvm::MachineBasicBlock::erase(), llvm::MachineInstr::getDebugLoc(), llvm::MachineOperand::getImm(), llvm::TargetMachine::getInstrInfo(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFunction::getTarget(), llvm::TargetFrameLowering::hasReservedCallFrame(), llvm::ARM_PROC::I, llvm::MachineBasicBlock::insert(), and TII.

void MBlazeFrameLowering::emitEpilogue	(	MachineFunction &	MF,
		MachineBasicBlock &	MBB
	)		const [virtual]

Implements llvm::TargetFrameLowering.

Definition at line 386 of file MBlazeFrameLowering.cpp.

References ADD, llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::MachineFrameInfo::adjustsStack(), llvm::BuildMI(), llvm::DebugLoc::get(), llvm::Function::getCallingConv(), llvm::MBlazeFunctionInfo::getFPStackOffset(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::TargetMachine::getInstrInfo(), llvm::MachineBasicBlock::getLastNonDebugInstr(), llvm::MBlazeFunctionInfo::getRAStackOffset(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), hasFP(), llvm::CallingConv::MBLAZE_INTR, and TII.

void MBlazeFrameLowering::emitPrologue

(

MachineFunction &

MF

)

const [virtual]

emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.

Implements llvm::TargetFrameLowering.

Definition at line 341 of file MBlazeFrameLowering.cpp.

References ADD, llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::MachineFrameInfo::adjustsStack(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), determineFrameLayout(), llvm::MachineBasicBlock::end(), llvm::MachineFunction::front(), llvm::Function::getCallingConv(), llvm::MBlazeFunctionInfo::getFPStackOffset(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::TargetMachine::getInstrInfo(), llvm::MBlazeFunctionInfo::getRAStackOffset(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), hasFP(), llvm::CallingConv::MBLAZE_INTR, and TII.

int MBlazeFrameLowering::getFrameIndexOffset	(	const MachineFunction &	MF,
		int	FI
	)		const [virtual]

getFrameIndexOffset - Returns the displacement from the frame register to the stack frame of the specified index.

getFrameIndexOffset - Returns the displacement from the frame register to the stack frame of the specified index. This is the default implementation which is overridden for some targets.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 324 of file MBlazeFrameLowering.cpp.

References llvm::MachineFunction::getInfo(), llvm::MBlazeFunctionInfo::getReplacement(), and llvm::MBlazeFunctionInfo::hasReplacement().

bool MBlazeFrameLowering::hasFP

(

const MachineFunction &

MF

)

const [virtual]

hasFP - Return true if the specified function should have a dedicated frame pointer register. For most targets this is true only if the function has variable sized allocas or if frame pointer elimination is disabled.

Implements llvm::TargetFrameLowering.

Definition at line 335 of file MBlazeFrameLowering.cpp.

References llvm::TargetOptions::DisableFramePointerElim(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getTarget(), llvm::MachineFrameInfo::hasVarSizedObjects(), and llvm::TargetMachine::Options.

Referenced by emitEpilogue(), emitPrologue(), and processFunctionBeforeCalleeSavedScan().

void MBlazeFrameLowering::processFunctionBeforeCalleeSavedScan	(	MachineFunction &	MF,
		RegScavenger *	RS
	)		const [virtual]

processFunctionBeforeCalleeSavedScan - This method is called immediately before PrologEpilogInserter scans the physical registers used to determine what callee saved registers should be spilled. This method is optional.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 469 of file MBlazeFrameLowering.cpp.

References llvm::MachineFrameInfo::adjustsStack(), analyzeFrameIndexes(), llvm::MachineFrameInfo::CreateFixedObject(), llvm::Function::getCallingConv(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), hasFP(), interruptFrameLayout(), llvm::CallingConv::MBLAZE_INTR, llvm::MBlazeFunctionInfo::setFPStackOffset(), and llvm::MBlazeFunctionInfo::setRAStackOffset().

bool llvm::MBlazeFrameLowering::targetHandlesStackFrameRounding

(

)

const [inline, virtual]

targetHandlesStackFrameRounding - Returns true if the target is responsible for rounding up the stack frame (probably at emitPrologue time).

Reimplemented from llvm::TargetFrameLowering.

Definition at line 35 of file MBlazeFrameLowering.h.

---

Member Data Documentation

const MBlazeSubtarget& llvm::MBlazeFrameLowering::STI [protected]

Definition at line 25 of file MBlazeFrameLowering.h.

---

The documentation for this class was generated from the following files:

• MBlazeFrameLowering.h
• MBlazeFrameLowering.cpp