#include <CallingConvLower.h>

Collaboration diagram for llvm::CCState:

Public Member Functions
	CCState (CallingConv::ID CC, bool isVarArg, MachineFunction &MF, const TargetMachine &TM, SmallVectorImpl< CCValAssign > &locs, LLVMContext &C)

void	addLoc (const CCValAssign &V)

LLVMContext &	getContext () const

const TargetMachine &	getTarget () const

MachineFunction &	getMachineFunction () const

CallingConv::ID	getCallingConv () const

bool	isVarArg () const

unsigned	getNextStackOffset () const

bool	isAllocated (unsigned Reg) const

void	AnalyzeFormalArguments (const SmallVectorImpl< ISD::InputArg > &Ins, CCAssignFn Fn)

void	AnalyzeReturn (const SmallVectorImpl< ISD::OutputArg > &Outs, CCAssignFn Fn)

bool	CheckReturn (const SmallVectorImpl< ISD::OutputArg > &ArgsFlags, CCAssignFn Fn)

void	AnalyzeCallOperands (const SmallVectorImpl< ISD::OutputArg > &Outs, CCAssignFn Fn)

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

void	AnalyzeCallResult (const SmallVectorImpl< ISD::InputArg > &Ins, CCAssignFn Fn)

void	AnalyzeCallResult (MVT VT, CCAssignFn Fn)

unsigned	getFirstUnallocated (const uint16_t *Regs, unsigned NumRegs) const

unsigned	AllocateReg (unsigned Reg)

unsigned	AllocateReg (unsigned Reg, unsigned ShadowReg)
	Version of AllocateReg with extra register to be shadowed. More...

unsigned	AllocateReg (const uint16_t *Regs, unsigned NumRegs)

unsigned	AllocateReg (const uint16_t Regs, const uint16_t ShadowRegs, unsigned NumRegs)
	Version of AllocateReg with list of registers to be shadowed. More...

unsigned	AllocateStack (unsigned Size, unsigned Align)

unsigned	AllocateStack (unsigned Size, unsigned Align, unsigned ShadowReg)
	Version of AllocateStack with extra register to be shadowed. More...

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

unsigned	getInRegsParamsCount () const

unsigned	getInRegsParamsProceed () const

void	getInRegsParamInfo (unsigned InRegsParamRecordIndex, unsigned &BeginReg, unsigned &EndReg) const

void	addInRegsParamInfo (unsigned RegBegin, unsigned RegEnd)

bool	nextInRegsParam ()

void	clearByValRegsInfo ()

ParmContext	getCallOrPrologue () const

Protected Attributes
ParmContext	CallOrPrologue

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 154 of file CallingConvLower.h.

Constructor & Destructor Documentation

CCState::CCState	(	CallingConv::ID	CC,
		bool	isVarArg,
		MachineFunction &	MF,
		const TargetMachine &	TM,
		SmallVectorImpl< CCValAssign > &	locs,
		LLVMContext &	C
	)

Definition at line 26 of file CallingConvLower.cpp.

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

Member Function Documentation

void llvm::CCState::addInRegsParamInfo	(	unsigned	RegBegin,
		unsigned	RegEnd
	)

inline

Definition at line 377 of file CallingConvLower.h.

References llvm::SmallVectorTemplateBase< T, isPodLike >::push_back().

void llvm::CCState::addLoc ( const CCValAssign & V )

inline

Definition at line 225 of file CallingConvLower.h.

Referenced by allocateStack(), AnalyzeArguments(), CC_Hexagon(), CC_Hexagon32(), CC_Hexagon64(), CC_Hexagon_VarArg(), CC_MipsO32(), CC_Sparc64_Full(), CC_Sparc64_Half(), CC_Sparc_Assign_f64(), CC_Sparc_Assign_SRet(), llvm::f64AssignAAPCS(), llvm::f64AssignAPCS(), llvm::f64RetAssign(), HandleByVal(), RetCC_Hexagon32(), and RetCC_Hexagon64().

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 291 of file CallingConvLower.h.

References isAllocated().

Referenced by AnalyzeArguments(), CC_AArch64NoMoreRegs(), CC_Hexagon32(), CC_Hexagon64(), CC_MipsO32(), llvm::CC_PPC32_SVR4_Custom_AlignArgRegs(), llvm::CC_PPC32_SVR4_Custom_AlignFPArgRegs(), CC_Sparc_Assign_f64(), llvm::f64AssignAAPCS(), llvm::f64AssignAPCS(), llvm::f64RetAssign(), RetCC_Hexagon32(), and RetCC_Hexagon64().

unsigned llvm::CCState::AllocateReg	(	unsigned	Reg,
		unsigned	ShadowReg
	)

inline

Version of AllocateReg with extra register to be shadowed.

Definition at line 298 of file CallingConvLower.h.

References isAllocated().

unsigned llvm::CCState::AllocateReg	(	const uint16_t *	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 308 of file CallingConvLower.h.

References getFirstUnallocated().

unsigned llvm::CCState::AllocateReg	(	const uint16_t *	Regs,
		const uint16_t *	ShadowRegs,
		unsigned	NumRegs
	)

inline

Version of AllocateReg with list of registers to be shadowed.

Definition at line 320 of file CallingConvLower.h.

References getFirstUnallocated().

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 335 of file CallingConvLower.h.

References llvm::MachineFrameInfo::ensureMaxAlignment(), and llvm::MachineFunction::getFrameInfo().

Referenced by allocateStack(), AllocateStack(), CC_Hexagon(), CC_Hexagon32(), CC_Hexagon64(), CC_Hexagon_VarArg(), CC_MipsO32(), CC_Sparc64_Full(), CC_Sparc64_Half(), CC_Sparc_Assign_f64(), llvm::f64AssignAAPCS(), llvm::f64AssignAPCS(), HandleByVal(), llvm::MipsTargetLowering::MipsCC::MipsCC(), RetCC_Hexagon32(), and RetCC_Hexagon64().

unsigned llvm::CCState::AllocateStack	(	unsigned	Size,
		unsigned	Align,
		unsigned	ShadowReg
	)

inline

Version of AllocateStack with extra register to be shadowed.

Definition at line 345 of file CallingConvLower.h.

References AllocateStack().

void CCState::AnalyzeCallOperands	(	const SmallVectorImpl< ISD::OutputArg > &	Outs,
		CCAssignFn	Fn
	)

AnalyzeCallOperands - Analyze the outgoing arguments to a call, incorporating info about the passed values into this state.

Definition at line 118 of file CallingConvLower.cpp.

References llvm::dbgs(), llvm::CCValAssign::Full, llvm::EVT::getEVTString(), llvm_unreachable, and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by AnalyzeVarArgs(), llvm::AArch64TargetLowering::IsEligibleForTailCallOptimization(), llvm::AArch64TargetLowering::LowerCall(), llvm::SystemZTargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerCall_32(), and llvm::SparcTargetLowering::LowerCall_64().

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 136 of file CallingConvLower.cpp.

References llvm::dbgs(), llvm::CCValAssign::Full, llvm::EVT::getEVTString(), llvm_unreachable, and llvm::SmallVectorTemplateCommon< T >::size().

void CCState::AnalyzeCallResult	(	const SmallVectorImpl< ISD::InputArg > &	Ins,
		CCAssignFn	Fn
	)

AnalyzeCallResult - Analyze the return values of a call, incorporating info about the passed values into this state.

Definition at line 155 of file CallingConvLower.cpp.

References llvm::dbgs(), llvm::CCValAssign::Full, llvm::EVT::getEVTString(), llvm_unreachable, and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by AnalyzeRetResult(), llvm::AArch64TargetLowering::IsEligibleForTailCallOptimization(), llvm::SystemZTargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerCall_32(), llvm::SparcTargetLowering::LowerCall_64(), llvm::HexagonTargetLowering::LowerCallResult(), and llvm::AArch64TargetLowering::LowerCallResult().

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 172 of file CallingConvLower.cpp.

References llvm::dbgs(), llvm::CCValAssign::Full, llvm::EVT::getEVTString(), and llvm_unreachable.

void CCState::AnalyzeFormalArguments	(	const SmallVectorImpl< ISD::InputArg > &	Ins,
		CCAssignFn	Fn
	)

AnalyzeFormalArguments - Analyze an array of argument values, incorporating info about the formals into this state.

Definition at line 67 of file CallingConvLower.cpp.

References llvm::dbgs(), llvm::CCValAssign::Full, llvm::EVT::getEVTString(), llvm_unreachable, and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by llvm::AMDGPUTargetLowering::AnalyzeFormalArguments(), AnalyzeVarArgs(), llvm::HexagonTargetLowering::LowerFormalArguments(), llvm::AArch64TargetLowering::LowerFormalArguments(), llvm::SystemZTargetLowering::LowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_32(), and llvm::SparcTargetLowering::LowerFormalArguments_64().

void CCState::AnalyzeReturn	(	const SmallVectorImpl< ISD::OutputArg > &	Outs,
		CCAssignFn	Fn
	)

AnalyzeReturn - Analyze the returned values of a return, incorporating info about the result values into this state.

Definition at line 100 of file CallingConvLower.cpp.

References llvm::dbgs(), llvm::CCValAssign::Full, llvm::EVT::getEVTString(), llvm_unreachable, and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by AnalyzeRetResult(), llvm::HexagonTargetLowering::LowerReturn(), llvm::AArch64TargetLowering::LowerReturn(), llvm::SystemZTargetLowering::LowerReturn(), llvm::SparcTargetLowering::LowerReturn_32(), and llvm::SparcTargetLowering::LowerReturn_64().

bool CCState::CheckReturn	(	const SmallVectorImpl< ISD::OutputArg > &	Outs,
		CCAssignFn	Fn
	)

CheckReturn - Analyze the return values of a function, returning true if the return can be performed without sret-demotion, and false otherwise.

Definition at line 86 of file CallingConvLower.cpp.

References llvm::CCValAssign::Full, and llvm::SmallVectorTemplateCommon< T, typename >::size().

void llvm::CCState::clearByValRegsInfo ( )

inline

Definition at line 392 of file CallingConvLower.h.

References llvm::SmallVectorImpl< T >::clear().

Referenced by CCState().

CallingConv::ID llvm::CCState::getCallingConv ( ) const

inline

Definition at line 232 of file CallingConvLower.h.

ParmContext llvm::CCState::getCallOrPrologue ( ) const

inline

Definition at line 397 of file CallingConvLower.h.

References CallOrPrologue.

LLVMContext& llvm::CCState::getContext ( ) const

inline

Definition at line 229 of file CallingConvLower.h.

unsigned llvm::CCState::getFirstUnallocated	(	const uint16_t *	Regs,
		unsigned	NumRegs
	)		const

inline

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

Definition at line 281 of file CallingConvLower.h.

References isAllocated().

Referenced by AllocateReg(), CC_MipsO32(), llvm::CC_PPC32_SVR4_Custom_AlignArgRegs(), llvm::CC_PPC32_SVR4_Custom_AlignFPArgRegs(), and llvm::AArch64TargetLowering::SaveVarArgRegisters().

void llvm::CCState::getInRegsParamInfo	(	unsigned	InRegsParamRecordIndex,
		unsigned &	BeginReg,
		unsigned &	EndReg
	)		const

inline

Definition at line 366 of file CallingConvLower.h.

References info, and llvm::SmallVectorTemplateCommon< T, typename >::size().

unsigned llvm::CCState::getInRegsParamsCount ( ) const

inline

Definition at line 359 of file CallingConvLower.h.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

unsigned llvm::CCState::getInRegsParamsProceed ( ) const

inline

Definition at line 362 of file CallingConvLower.h.

MachineFunction& llvm::CCState::getMachineFunction ( ) const

inline

Definition at line 231 of file CallingConvLower.h.

unsigned llvm::CCState::getNextStackOffset ( ) const

inline

Definition at line 235 of file CallingConvLower.h.

Referenced by llvm::AArch64TargetLowering::SaveVarArgRegisters().

const TargetMachine& llvm::CCState::getTarget ( ) const

inline

Definition at line 230 of file CallingConvLower.h.

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

Definition at line 42 of file CallingConvLower.cpp.

References addLoc(), Align(), AllocateStack(), llvm::MachineFrameInfo::ensureMaxAlignment(), llvm::ISD::ArgFlagsTy::getByValAlign(), llvm::ISD::ArgFlagsTy::getByValSize(), llvm::MachineFunction::getFrameInfo(), llvm::CCValAssign::getMem(), llvm::TargetMachine::getTargetLowering(), llvm::TargetLowering::HandleByVal(), and llvm::MinAlign().

Referenced by AnalyzeArguments().

bool llvm::CCState::isAllocated ( unsigned Reg ) const

inline

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

Definition at line 239 of file CallingConvLower.h.

Referenced by AllocateReg(), and getFirstUnallocated().

bool llvm::CCState::isVarArg ( ) const

inline

Definition at line 233 of file CallingConvLower.h.

Referenced by AnalyzeArguments(), and CC_MipsO32().

bool llvm::CCState::nextInRegsParam ( )

inline

Definition at line 384 of file CallingConvLower.h.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

Member Data Documentation

ParmContext llvm::CCState::CallOrPrologue

protected

Definition at line 218 of file CallingConvLower.h.

Referenced by getCallOrPrologue().

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

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation