llvm::MSP430TargetLowering Class Reference

#include <MSP430ISelLowering.h>

Inheritance diagram for llvm::MSP430TargetLowering:

Collaboration diagram for llvm::MSP430TargetLowering:

List of all members.

Public Member Functions
	MSP430TargetLowering (MSP430TargetMachine &TM)
virtual MVT	getScalarShiftAmountTy (EVT LHSTy) const
virtual SDValue	LowerOperation (SDValue Op, SelectionDAG &DAG) const
	LowerOperation - Provide custom lowering hooks for some operations.
virtual const char *	getTargetNodeName (unsigned Opcode) const
SDValue	LowerShifts (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerGlobalAddress (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerBlockAddress (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerExternalSymbol (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerBR_CC (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerSETCC (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerSELECT_CC (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerSIGN_EXTEND (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerRETURNADDR (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerFRAMEADDR (SDValue Op, SelectionDAG &DAG) const
SDValue	LowerVASTART (SDValue Op, SelectionDAG &DAG) const
SDValue	getReturnAddressFrameIndex (SelectionDAG &DAG) const
TargetLowering::ConstraintType	getConstraintType (const std::string &Constraint) const
std::pair< unsigned, const TargetRegisterClass * >	getRegForInlineAsmConstraint (const std::string &Constraint, EVT VT) const
virtual bool	isTruncateFree (Type *Ty1, Type *Ty2) const
virtual bool	isTruncateFree (EVT VT1, EVT VT2) const
virtual bool	isZExtFree (Type *Ty1, Type *Ty2) const
virtual bool	isZExtFree (EVT VT1, EVT VT2) const
virtual bool	isZExtFree (SDValue Val, EVT VT2) const
MachineBasicBlock *	EmitInstrWithCustomInserter (MachineInstr *MI, MachineBasicBlock *BB) const
MachineBasicBlock *	EmitShiftInstr (MachineInstr *MI, MachineBasicBlock *BB) const

---

Detailed Description

Definition at line 72 of file MSP430ISelLowering.h.

---

Constructor & Destructor Documentation

MSP430TargetLowering::MSP430TargetLowering

(

MSP430TargetMachine &

TM

)

[explicit]

Definition at line 60 of file MSP430ISelLowering.cpp.

References llvm::TargetLoweringBase::addRegisterClass(), llvm::ISD::BlockAddress, llvm::ISD::BR_CC, llvm::ISD::BR_JT, llvm::ISD::BRCOND, llvm::TargetLoweringBase::computeRegisterProperties(), llvm::ISD::CTLZ, llvm::ISD::CTLZ_ZERO_UNDEF, llvm::ISD::CTPOP, llvm::ISD::CTTZ, llvm::ISD::CTTZ_ZERO_UNDEF, llvm::TargetLoweringBase::Custom, llvm::ISD::DYNAMIC_STACKALLOC, llvm::TargetLoweringBase::Expand, llvm::ISD::ExternalSymbol, llvm::ISD::EXTLOAD, llvm::TargetLoweringBase::getDataLayout(), llvm::ISD::GlobalAddress, HWMultIntr, HWMultMode, HWMultNoIntr, llvm::MVT::i1, llvm::MVT::i16, llvm::MVT::i8, llvm::TargetLoweringBase::Legal, llvm::ISD::MUL, llvm::RTLIB::MUL_I16, llvm::RTLIB::MUL_I8, llvm::ISD::MULHS, llvm::ISD::MULHU, llvm::MVT::Other, llvm::ISD::POST_INC, llvm::TargetLoweringBase::Promote, llvm::ISD::ROTL, llvm::ISD::ROTR, llvm::ISD::SDIV, llvm::ISD::SDIVREM, llvm::ISD::SELECT, llvm::ISD::SELECT_CC, llvm::TargetLoweringBase::setBooleanContents(), llvm::TargetLoweringBase::setBooleanVectorContents(), llvm::ISD::SETCC, llvm::TargetLoweringBase::setIndexedLoadAction(), llvm::TargetLoweringBase::setIntDivIsCheap(), llvm::TargetLoweringBase::setLibcallName(), llvm::TargetLoweringBase::setLoadExtAction(), llvm::TargetLoweringBase::setMinFunctionAlignment(), llvm::TargetLoweringBase::setOperationAction(), llvm::TargetLoweringBase::setPrefFunctionAlignment(), llvm::TargetLoweringBase::setStackPointerRegisterToSaveRestore(), llvm::TargetLoweringBase::setTruncStoreAction(), llvm::ISD::SEXTLOAD, llvm::ISD::SHL, llvm::ISD::SHL_PARTS, llvm::ISD::SIGN_EXTEND, llvm::ISD::SIGN_EXTEND_INREG, llvm::ISD::SMUL_LOHI, llvm::ISD::SRA, llvm::ISD::SRA_PARTS, llvm::ISD::SREM, llvm::ISD::SRL, llvm::ISD::SRL_PARTS, llvm::ISD::UDIV, llvm::ISD::UDIVREM, llvm::ISD::UMUL_LOHI, llvm::ISD::UREM, llvm::ISD::VAARG, llvm::ISD::VACOPY, llvm::ISD::VAEND, llvm::ISD::VASTART, llvm::TargetLoweringBase::ZeroOrOneBooleanContent, and llvm::ISD::ZEXTLOAD.

---

Member Function Documentation

MachineBasicBlock * MSP430TargetLowering::EmitInstrWithCustomInserter	(	MachineInstr *	MI,
		MachineBasicBlock *	BB
	)		const [virtual]

Reimplemented from llvm::TargetLowering.

Definition at line 1179 of file MSP430ISelLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::MachineBasicBlock::addSuccessor(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::MachineFunction::CreateMachineBasicBlock(), EmitShiftInstr(), llvm::MachineBasicBlock::end(), llvm::MachineInstr::eraseFromParent(), F(), llvm::MCInstrInfo::get(), llvm::MachineBasicBlock::getBasicBlock(), llvm::MachineInstr::getDebugLoc(), llvm::MachineOperand::getImm(), llvm::TargetMachine::getInstrInfo(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::TargetLoweringBase::getTargetMachine(), I, llvm::MachineFunction::insert(), llvm::next(), llvm::PHI, llvm::MachineBasicBlock::splice(), TII, and llvm::MachineBasicBlock::transferSuccessorsAndUpdatePHIs().

MachineBasicBlock * MSP430TargetLowering::EmitShiftInstr	(	MachineInstr *	MI,
		MachineBasicBlock *	BB
	)		const

Definition at line 1071 of file MSP430ISelLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMBB(), llvm::MachineInstrBuilder::addReg(), llvm::MachineBasicBlock::addSuccessor(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), MSP430CC::COND_E, MSP430CC::COND_NE, llvm::MachineFunction::CreateMachineBasicBlock(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MachineBasicBlock::end(), llvm::MachineInstr::eraseFromParent(), F(), llvm::MCInstrInfo::get(), llvm::MachineBasicBlock::getBasicBlock(), llvm::MachineInstr::getDebugLoc(), llvm::TargetMachine::getInstrInfo(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::TargetLoweringBase::getTargetMachine(), I, llvm::MachineFunction::insert(), llvm_unreachable, llvm::next(), llvm::PHI, llvm::MachineBasicBlock::splice(), TII, and llvm::MachineBasicBlock::transferSuccessorsAndUpdatePHIs().

Referenced by EmitInstrWithCustomInserter().

TargetLowering::ConstraintType MSP430TargetLowering::getConstraintType

(

const std::string &

Constraint

)

const [virtual]

getConstraintType - Given a constraint letter, return the type of constraint it is for this target.

Reimplemented from llvm::TargetLowering.

Definition at line 214 of file MSP430ISelLowering.cpp.

References llvm::TargetLowering::C_RegisterClass.

std::pair< unsigned, const TargetRegisterClass * > MSP430TargetLowering::getRegForInlineAsmConstraint	(	const std::string &	Constraint,
		EVT	VT
	)		const [virtual]

getRegForInlineAsmConstraint - Given a physical register constraint (e.g. {edx}), return the register number and the register class for the register.

Given a register class constraint, like 'r', if this corresponds directly to an LLVM register class, return a register of 0 and the register class pointer.

This should only be used for C_Register constraints. On error, this returns a register number of 0 and a null register class pointer..

Reimplemented from llvm::TargetLowering.

Definition at line 228 of file MSP430ISelLowering.cpp.

References llvm::MVT::i8.

SDValue MSP430TargetLowering::getReturnAddressFrameIndex

(

SelectionDAG &

DAG

)

const

Definition at line 910 of file MSP430ISelLowering.cpp.

References llvm::MachineFrameInfo::CreateFixedObject(), llvm::SelectionDAG::getFrameIndex(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::SelectionDAG::getMachineFunction(), llvm::DataLayout::getPointerSize(), llvm::TargetLoweringBase::getPointerTy(), llvm::MSP430MachineFunctionInfo::getRAIndex(), and llvm::MSP430MachineFunctionInfo::setRAIndex().

Referenced by LowerRETURNADDR().

virtual MVT llvm::MSP430TargetLowering::getScalarShiftAmountTy

(

EVT

LHSTy

)

const [inline, virtual]

Reimplemented from llvm::TargetLoweringBase.

Definition at line 76 of file MSP430ISelLowering.h.

References llvm::MVT::i8.

const char * MSP430TargetLowering::getTargetNodeName

(

unsigned

Opcode

)

const [virtual]

getTargetNodeName - This method returns the name of a target specific DAG node.

Reimplemented from llvm::TargetLowering.

Definition at line 1019 of file MSP430ISelLowering.cpp.

References llvm::MSP430ISD::BR_CC, llvm::MSP430ISD::CALL, llvm::MSP430ISD::CMP, llvm::MSP430ISD::RET_FLAG, llvm::MSP430ISD::RETI_FLAG, llvm::MSP430ISD::RLA, llvm::MSP430ISD::RRA, llvm::MSP430ISD::RRC, llvm::MSP430ISD::SELECT_CC, llvm::MSP430ISD::SHL, llvm::MSP430ISD::SRA, and llvm::MSP430ISD::Wrapper.

bool MSP430TargetLowering::isTruncateFree	(	Type *	Ty1,
		Type *	Ty2
	)		const [virtual]

isTruncateFree - Return true if it's free to truncate a value of type Ty1 to type Ty2. e.g. On msp430 it's free to truncate a i16 value in register R15W to i8 by referencing its sub-register R15B.

Reimplemented from llvm::TargetLoweringBase.

Definition at line 1037 of file MSP430ISelLowering.cpp.

References llvm::Type::getPrimitiveSizeInBits(), and llvm::Type::isIntegerTy().

bool MSP430TargetLowering::isTruncateFree	(	EVT	VT1,
		EVT	VT2
	)		const [virtual]

Reimplemented from llvm::TargetLoweringBase.

Definition at line 1045 of file MSP430ISelLowering.cpp.

References llvm::EVT::getSizeInBits(), and llvm::EVT::isInteger().

bool MSP430TargetLowering::isZExtFree	(	Type *	Ty1,
		Type *	Ty2
	)		const [virtual]

isZExtFree - Return true if any actual instruction that defines a value of type Ty1 implicit zero-extends the value to Ty2 in the result register. This does not necessarily include registers defined in unknown ways, such as incoming arguments, or copies from unknown virtual registers. Also, if isTruncateFree(Ty2, Ty1) is true, this does not necessarily apply to truncate instructions. e.g. on msp430, all instructions that define 8-bit values implicit zero-extend the result out to 16 bits.

Reimplemented from llvm::TargetLoweringBase.

Definition at line 1052 of file MSP430ISelLowering.cpp.

References llvm::Type::isIntegerTy().

Referenced by isZExtFree().

bool MSP430TargetLowering::isZExtFree	(	EVT	VT1,
		EVT	VT2
	)		const [virtual]

Reimplemented from llvm::TargetLoweringBase.

Definition at line 1057 of file MSP430ISelLowering.cpp.

References llvm::MVT::i16, and llvm::MVT::i8.

bool MSP430TargetLowering::isZExtFree	(	SDValue	Val,
		EVT	VT2
	)		const [virtual]

isZExtFree - Return true if zero-extending the specific node Val to type VT2 is free (either because it's implicitly zero-extended such as ARM ldrb / ldrh or because it's folded such as X86 zero-extending loads).

Reimplemented from llvm::TargetLoweringBase.

Definition at line 1062 of file MSP430ISelLowering.cpp.

References llvm::SDValue::getValueType(), and isZExtFree().

SDValue MSP430TargetLowering::LowerBlockAddress	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 687 of file MSP430ISelLowering.cpp.

References llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getNode(), llvm::TargetLoweringBase::getPointerTy(), llvm::SelectionDAG::getTargetBlockAddress(), and llvm::MSP430ISD::Wrapper.

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerBR_CC	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 779 of file MSP430ISelLowering.cpp.

References llvm::MSP430ISD::BR_CC, EmitCMP(), llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), and llvm::SDValue::getValueType().

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerExternalSymbol	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 678 of file MSP430ISelLowering.cpp.

References llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getNode(), llvm::TargetLoweringBase::getPointerTy(), llvm::SelectionDAG::getTargetExternalSymbol(), and llvm::MSP430ISD::Wrapper.

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerFRAMEADDR	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 950 of file MSP430ISelLowering.cpp.

References llvm::SelectionDAG::getCopyFromReg(), llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getEntryNode(), llvm::MachineFunction::getFrameInfo(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getMachineFunction(), llvm::SDValue::getOperand(), llvm::SDValue::getValueType(), and llvm::MachineFrameInfo::setFrameAddressIsTaken().

Referenced by LowerOperation(), and LowerRETURNADDR().

SDValue MSP430TargetLowering::LowerGlobalAddress	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 666 of file MSP430ISelLowering.cpp.

References llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getNode(), llvm::TargetLoweringBase::getPointerTy(), llvm::SelectionDAG::getTargetGlobalAddress(), and llvm::MSP430ISD::Wrapper.

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerOperation	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const [virtual]

LowerOperation - Provide custom lowering hooks for some operations.

Reimplemented from llvm::TargetLowering.

Definition at line 186 of file MSP430ISelLowering.cpp.

References llvm::ISD::BlockAddress, llvm::ISD::BR_CC, llvm::ISD::ExternalSymbol, llvm::ISD::FRAMEADDR, llvm::SDValue::getOpcode(), llvm::ISD::GlobalAddress, llvm_unreachable, LowerBlockAddress(), LowerBR_CC(), LowerExternalSymbol(), LowerFRAMEADDR(), LowerGlobalAddress(), LowerRETURNADDR(), LowerSELECT_CC(), LowerSETCC(), LowerShifts(), LowerSIGN_EXTEND(), LowerVASTART(), llvm::ISD::RETURNADDR, llvm::ISD::SELECT_CC, llvm::ISD::SETCC, llvm::ISD::SHL, llvm::ISD::SIGN_EXTEND, llvm::ISD::SRA, llvm::ISD::SRL, and llvm::ISD::VASTART.

SDValue MSP430TargetLowering::LowerRETURNADDR	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 926 of file MSP430ISelLowering.cpp.

References llvm::ISD::ADD, llvm::SelectionDAG::getConstant(), llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getEntryNode(), llvm::MachineFunction::getFrameInfo(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getMachineFunction(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::DataLayout::getPointerSize(), llvm::TargetLoweringBase::getPointerTy(), getReturnAddressFrameIndex(), llvm::MVT::i16, LowerFRAMEADDR(), and llvm::MachineFrameInfo::setReturnAddressIsTaken().

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerSELECT_CC	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 874 of file MSP430ISelLowering.cpp.

References EmitCMP(), llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::SDValue::getValueType(), llvm::SelectionDAG::getVTList(), llvm::MVT::Glue, llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), llvm::MSP430ISD::SELECT_CC, and llvm::SmallVectorTemplateCommon< T >::size().

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerSETCC	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 794 of file MSP430ISelLowering.cpp.

References llvm::ISD::AND, AND, MSP430CC::COND_E, MSP430CC::COND_HS, MSP430CC::COND_LO, MSP430CC::COND_NE, EmitCMP(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getCopyFromReg(), llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getEntryNode(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), llvm::SDValue::getValueType(), llvm::SelectionDAG::getVTList(), llvm::MVT::Glue, llvm::SDValue::hasOneUse(), llvm::MVT::i16, llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), llvm::MSP430ISD::SELECT_CC, llvm::SmallVectorTemplateCommon< T >::size(), llvm::ISD::SRA, llvm::ISD::TRUNCATE, and llvm::ISD::XOR.

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerShifts	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 623 of file MSP430ISelLowering.cpp.

References llvm::SDNode::getDebugLoc(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDNode::getOperand(), llvm::SDValue::getValueType(), llvm_unreachable, N, llvm::MSP430ISD::RLA, llvm::MSP430ISD::RRA, llvm::MSP430ISD::RRC, llvm::MSP430ISD::SHL, llvm::ISD::SHL, llvm::MSP430ISD::SRA, llvm::ISD::SRA, llvm::MSP430ISD::SRL, and llvm::ISD::SRL.

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerSIGN_EXTEND	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 896 of file MSP430ISelLowering.cpp.

References llvm::ISD::ANY_EXTEND, llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::SDValue::getValueType(), llvm::SelectionDAG::getValueType(), llvm::MVT::i16, and llvm::ISD::SIGN_EXTEND_INREG.

Referenced by LowerOperation().

SDValue MSP430TargetLowering::LowerVASTART	(	SDValue	Op,
		SelectionDAG &	DAG
	)		const

Definition at line 967 of file MSP430ISelLowering.cpp.

References llvm::ISD::FrameIndex, llvm::SDValue::getDebugLoc(), llvm::SelectionDAG::getFrameIndex(), llvm::MachineFunction::getInfo(), llvm::SelectionDAG::getMachineFunction(), llvm::SDValue::getOperand(), llvm::TargetLoweringBase::getPointerTy(), llvm::SelectionDAG::getStore(), and llvm::MSP430MachineFunctionInfo::getVarArgsFrameIndex().

Referenced by LowerOperation().

---

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

• MSP430ISelLowering.h
• MSP430ISelLowering.cpp