#include "Target/ARM/ARMCallLowering.h"

Inheritance diagram for llvm::ARMCallLowering:

Collaboration diagram for llvm::ARMCallLowering:

Public Member Functions
	ARMCallLowering (const ARMTargetLowering &TLI)

bool	lowerReturn (MachineIRBuilder &MIRBuilder, const Value *Val, ArrayRef< unsigned > VRegs) const override
	This hook must be implemented to lower outgoing return values, described by `Val`, into the specified virtual registers `VRegs`. More...

bool	lowerFormalArguments (MachineIRBuilder &MIRBuilder, const Function &F, ArrayRef< unsigned > VRegs) const override
	This hook must be implemented to lower the incoming (formal) arguments, described by `Args`, for GlobalISel. More...

bool	lowerCall (MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv, const MachineOperand &Callee, const ArgInfo &OrigRet, ArrayRef< ArgInfo > OrigArgs) const override
	This hook must be implemented to lower the given call instruction, including argument and return value marshalling. More...

Public Member Functions inherited from llvm::CallLowering
	CallLowering (const TargetLowering *TLI)

virtual	~CallLowering ()=default

bool	lowerCall (MachineIRBuilder &MIRBuilder, ImmutableCallSite CS, unsigned ResReg, ArrayRef< unsigned > ArgRegs, std::function< unsigned()> GetCalleeReg) const
	Lower the given call instruction, including argument and return value marshalling. More...

Additional Inherited Members
Protected Member Functions inherited from llvm::CallLowering
const TargetLowering *	getTLI () const
	Getter for generic TargetLowering class. More...

template<class XXXTargetLowering >
const XXXTargetLowering *	getTLI () const
	Getter for target specific TargetLowering class. More...

template<typename FuncInfoTy >
void	setArgFlags (ArgInfo &Arg, unsigned OpIdx, const DataLayout &DL, const FuncInfoTy &FuncInfo) const

bool	handleAssignments (MachineIRBuilder &MIRBuilder, ArrayRef< ArgInfo > Args, ValueHandler &Handler) const
	Invoke Handler::assignArg on each of the given `Args` and then use `Callback` to move them to the assigned locations. More...

Detailed Description

Definition at line 32 of file ARMCallLowering.h.

Constructor & Destructor Documentation

◆ ARMCallLowering()

ARMCallLowering::ARMCallLowering ( const ARMTargetLowering & TLI )

Definition at line 53 of file ARMCallLowering.cpp.

Member Function Documentation

◆ lowerCall()

bool ARMCallLowering::lowerCall	(	MachineIRBuilder &	MIRBuilder,
		CallingConv::ID	CallConv,
		const MachineOperand &	Callee,
		const ArgInfo &	OrigRet,
		ArrayRef< ArgInfo >	OrigArgs
	)		const

overridevirtual

This hook must be implemented to lower the given call instruction, including argument and return value marshalling.

CallConv is the calling convention to be used for the call.

Callee is the destination of the call. It should be either a register, globaladdress, or externalsymbol.

ResTy is the type returned by the function

ResReg is the generic virtual register that the returned value should be lowered into.

ArgTys is a list of the types each member of ArgRegs has; used by the target to decide which register/stack slot should be allocated.

ArgRegs is a list of virtual registers containing each argument that needs to be passed.

Returns: true if the lowering succeeded, false otherwise.

Reimplemented from llvm::CallLowering.

Definition at line 521 of file ARMCallLowering.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::ARMCC::AL, Arg, llvm::MachineIRBuilder::buildInstr(), llvm::MachineIRBuilder::buildInstrNoInsert(), llvm::MachineIRBuilder::buildMerge(), llvm::MachineIRBuilder::buildUnmerge(), llvm::SmallVectorImpl< T >::clear(), llvm::constrainOperandRegClass(), llvm::SmallVectorBase::empty(), llvm::MachineFunction::getDataLayout(), llvm::MachineIRBuilder::getMF(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::CallLowering::handleAssignments(), llvm::MachineIRBuilder::insertInstr(), llvm::MachineOperand::isReg(), isSupportedType(), isThumb(), llvm::Type::isVoidTy(), MRI, llvm::predOps(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::CallLowering::ArgInfo::Reg, Reg, llvm::SmallVectorBase::size(), TRI, and llvm::CallLowering::ArgInfo::Ty.

◆ lowerFormalArguments()

bool ARMCallLowering::lowerFormalArguments	(	MachineIRBuilder &	MIRBuilder,
		const Function &	F,
		ArrayRef< unsigned >	VRegs
	)		const

overridevirtual

This hook must be implemented to lower the incoming (formal) arguments, described by Args, for GlobalISel.

Each argument must end up in the related virtual register described by VRegs. In other words, the first argument should end up in VRegs[0], the second in VRegs[1], and so on. MIRBuilder is set to the proper insertion for the argument lowering.