llvm::CCState Class Reference

#include <CallingConvLower.h>

Collaboration diagram for llvm::CCState:

List of all members.

Public Member Functions

CCState (unsigned CC, bool isVarArg, const TargetMachine &TM, SmallVector< CCValAssign, 16 > &locs)

void addLoc (const CCValAssign &V)

const TargetMachine & getTarget () const

unsigned getCallingConv () const

bool isVarArg () const

unsigned getNextStackOffset () const

bool isAllocated (unsigned Reg) const

void AnalyzeFormalArguments (SDNode *TheArgs, CCAssignFn Fn)

void AnalyzeReturn (SDNode *TheRet, CCAssignFn Fn)

void AnalyzeCallOperands (CallSDNode *TheCall, CCAssignFn Fn)

void AnalyzeCallOperands (SmallVectorImpl< MVT > &ArgVTs, SmallVectorImpl< ISD::ArgFlagsTy > &Flags, CCAssignFn Fn)

void AnalyzeCallResult (CallSDNode *TheCall, CCAssignFn Fn)

void AnalyzeCallResult (MVT VT, CCAssignFn Fn)

unsigned getFirstUnallocated (const unsigned *Regs, unsigned NumRegs) const

unsigned AllocateReg (unsigned Reg)

unsigned AllocateReg (unsigned Reg, unsigned ShadowReg)

Version of AllocateReg with extra register to be shadowed.

unsigned AllocateReg (const unsigned *Regs, unsigned NumRegs)

unsigned AllocateReg (const unsigned *Regs, const unsigned *ShadowRegs, unsigned NumRegs)

Version of AllocateReg with list of registers to be shadowed.

unsigned AllocateStack (unsigned Size, unsigned Align)

void HandleByVal (unsigned ValNo, MVT ValVT, MVT LocVT, CCValAssign::LocInfo LocInfo, int MinSize, int MinAlign, ISD::ArgFlagsTy ArgFlags)

Detailed Description

CCState - This class holds information needed while lowering arguments and return values. It captures which registers are already assigned and which stack slots are used. It provides accessors to allocate these values.

Definition at line 107 of file CallingConvLower.h.

Constructor & Destructor Documentation

CCState::CCState	(	unsigned	CC,
		bool	isVarArg,
		const TargetMachine &	TM,
		SmallVector< CCValAssign, 16 > &	locs
	)

Definition at line 21 of file CallingConvLower.cpp.

References llvm::TargetRegisterInfo::getNumRegs(), and llvm::SmallVectorImpl< T >::resize().

Member Function Documentation

void llvm::CCState::addLoc ( const CCValAssign & V ) [inline]

Definition at line 120 of file CallingConvLower.h.

Referenced by HandleByVal().

const TargetMachine& llvm::CCState::getTarget ( ) const [inline]

Definition at line 124 of file CallingConvLower.h.

unsigned llvm::CCState::getCallingConv ( ) const [inline]

Definition at line 125 of file CallingConvLower.h.

bool llvm::CCState::isVarArg ( ) const [inline]

Definition at line 126 of file CallingConvLower.h.

unsigned llvm::CCState::getNextStackOffset ( ) const [inline]

Definition at line 128 of file CallingConvLower.h.

bool llvm::CCState::isAllocated ( unsigned Reg ) const [inline]

isAllocated - Return true if the specified register (or an alias) is allocated.

Definition at line 132 of file CallingConvLower.h.

Referenced by AllocateReg(), and getFirstUnallocated().

void CCState::AnalyzeFormalArguments	(	SDNode *	TheArgs,
		CCAssignFn	Fn
	)

AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node, incorporating info about the formals into this state.

Definition at line 60 of file CallingConvLower.cpp.

References llvm::cerr(), llvm::CCValAssign::Full, llvm::MVT::getMVTString(), llvm::SDNode::getNumValues(), llvm::SDNode::getOperand(), and llvm::SDNode::getValueType().

void CCState::AnalyzeReturn	(	SDNode *	TheRet,
		CCAssignFn	Fn
	)

AnalyzeReturn - Analyze the returned values of an ISD::RET node, incorporating info about the result values into this state.

Definition at line 77 of file CallingConvLower.cpp.

References llvm::cerr(), llvm::CCValAssign::Full, llvm::MVT::getMVTString(), llvm::SDNode::getNumOperands(), llvm::SDNode::getOperand(), llvm::SDValue::getValueType(), and VT.

Referenced by LowerRET().

void CCState::AnalyzeCallOperands	(	CallSDNode *	TheCall,
		CCAssignFn	Fn
	)

AnalyzeCallOperands - Analyze an ISD::CALL node, incorporating info about the passed values into this state.

Definition at line 94 of file CallingConvLower.cpp.

References llvm::cerr(), llvm::CCValAssign::Full, llvm::CallSDNode::getArg(), llvm::CallSDNode::getArgFlags(), llvm::MVT::getMVTString(), llvm::CallSDNode::getNumArgs(), and llvm::SDValue::getValueType().

void CCState::AnalyzeCallOperands	(	SmallVectorImpl< MVT > &	ArgVTs,
		SmallVectorImpl< ISD::ArgFlagsTy > &	Flags,
		CCAssignFn	Fn
	)

AnalyzeCallOperands - Same as above except it takes vectors of types and argument flags.

Definition at line 109 of file CallingConvLower.cpp.

References llvm::cerr(), llvm::CCValAssign::Full, llvm::MVT::getMVTString(), and llvm::SmallVectorImpl< T >::size().

void CCState::AnalyzeCallResult	(	CallSDNode *	TheCall,
		CCAssignFn	Fn
	)

AnalyzeCallResult - Analyze the return values of an ISD::CALL node, incorporating info about the passed values into this state.

Definition at line 126 of file CallingConvLower.cpp.

References llvm::cerr(), llvm::CCValAssign::Full, llvm::MVT::getMVTString(), llvm::CallSDNode::getNumRetVals(), llvm::CallSDNode::getRetValType(), llvm::CallSDNode::isInreg(), llvm::ISD::ArgFlagsTy::setInReg(), and VT.

void CCState::AnalyzeCallResult	(	MVT	VT,
		CCAssignFn	Fn
	)

AnalyzeCallResult - Same as above except it's specialized for calls which produce a single value.

Definition at line 142 of file CallingConvLower.cpp.

References llvm::cerr(), llvm::CCValAssign::Full, and llvm::MVT::getMVTString().

unsigned llvm::CCState::getFirstUnallocated	(	const unsigned *	Regs,
		unsigned	NumRegs
	)			const `[inline]`

getFirstUnallocated - Return the first unallocated register in the set, or NumRegs if they are all allocated.

Definition at line 164 of file CallingConvLower.h.

References isAllocated().

Referenced by AllocateReg().

unsigned llvm::CCState::AllocateReg ( unsigned Reg ) [inline]

AllocateReg - Attempt to allocate one register. If it is not available, return zero. Otherwise, return the register, marking it and any aliases as allocated.

Definition at line 174 of file CallingConvLower.h.

References isAllocated().

unsigned llvm::CCState::AllocateReg	(	unsigned	Reg,
		unsigned	ShadowReg
	)			`[inline]`

Version of AllocateReg with extra register to be shadowed.

Definition at line 181 of file CallingConvLower.h.

References isAllocated().

unsigned llvm::CCState::AllocateReg	(	const unsigned *	Regs,
		unsigned	NumRegs
	)			`[inline]`

AllocateReg - Attempt to allocate one of the specified registers. If none are available, return zero. Otherwise, return the first one available, marking it and any aliases as allocated.

Definition at line 191 of file CallingConvLower.h.

References getFirstUnallocated(), and Reg.

unsigned llvm::CCState::AllocateReg	(	const unsigned *	Regs,
		const unsigned *	ShadowRegs,
		unsigned	NumRegs
	)			`[inline]`

Version of AllocateReg with list of registers to be shadowed.

Definition at line 203 of file CallingConvLower.h.

References getFirstUnallocated(), and Reg.

unsigned llvm::CCState::AllocateStack	(	unsigned	Size,
		unsigned	Align
	)			`[inline]`

AllocateStack - Allocate a chunk of stack space with the specified size and alignment.

Definition at line 218 of file CallingConvLower.h.

Referenced by HandleByVal().

void CCState::HandleByVal	(	unsigned	ValNo,
		MVT	ValVT,
		MVT	LocVT,
		CCValAssign::LocInfo	LocInfo,
		int	MinSize,
		int	MinAlign,
		ISD::ArgFlagsTy	ArgFlags
	)

Definition at line 34 of file CallingConvLower.cpp.

References addLoc(), Align, AllocateStack(), llvm::ISD::ArgFlagsTy::getByValAlign(), llvm::ISD::ArgFlagsTy::getByValSize(), llvm::CCValAssign::getMem(), and Offset.

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


Public Member Functions
	CCState (unsigned CC, bool isVarArg, const TargetMachine &TM, SmallVector< CCValAssign, 16 > &locs)
void	addLoc (const CCValAssign &V)
const TargetMachine &	getTarget () const
unsigned	getCallingConv () const
bool	isVarArg () const
unsigned	getNextStackOffset () const
bool	isAllocated (unsigned Reg) const
void	AnalyzeFormalArguments (SDNode *TheArgs, CCAssignFn Fn)
void	AnalyzeReturn (SDNode *TheRet, CCAssignFn Fn)
void	AnalyzeCallOperands (CallSDNode *TheCall, CCAssignFn Fn)
void	AnalyzeCallOperands (SmallVectorImpl< MVT > &ArgVTs, SmallVectorImpl< ISD::ArgFlagsTy > &Flags, CCAssignFn Fn)
void	AnalyzeCallResult (CallSDNode *TheCall, CCAssignFn Fn)
void	AnalyzeCallResult (MVT VT, CCAssignFn Fn)
unsigned	getFirstUnallocated (const unsigned *Regs, unsigned NumRegs) const
unsigned	AllocateReg (unsigned Reg)
unsigned	AllocateReg (unsigned Reg, unsigned ShadowReg)
	Version of AllocateReg with extra register to be shadowed.
unsigned	AllocateReg (const unsigned *Regs, unsigned NumRegs)
unsigned	AllocateReg (const unsigned Regs, const unsigned ShadowRegs, unsigned NumRegs)
	Version of AllocateReg with list of registers to be shadowed.
unsigned	AllocateStack (unsigned Size, unsigned Align)
void	HandleByVal (unsigned ValNo, MVT ValVT, MVT LocVT, CCValAssign::LocInfo LocInfo, int MinSize, int MinAlign, ISD::ArgFlagsTy ArgFlags)