MSP430ISelLowering.cpp File Reference

#include "MSP430ISelLowering.h"
#include "MSP430.h"
#include "MSP430MachineFunctionInfo.h"
#include "MSP430Subtarget.h"
#include "MSP430TargetMachine.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "MSP430GenCallingConv.inc"

Include dependency graph for MSP430ISelLowering.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "msp430-lower"
Enumerations
enum	HWMultUseMode { NoHWMult, HWMultIntr, HWMultNoIntr }
Functions
template<typename ArgT >
static void	ParseFunctionArgs (const SmallVectorImpl< ArgT > &Args, SmallVectorImpl< unsigned > &Out)
static void	AnalyzeVarArgs (CCState &State, const SmallVectorImpl< ISD::OutputArg > &Outs)
static void	AnalyzeVarArgs (CCState &State, const SmallVectorImpl< ISD::InputArg > &Ins)
template<typename ArgT >
static void	AnalyzeArguments (CCState &State, SmallVectorImpl< CCValAssign > &ArgLocs, const SmallVectorImpl< ArgT > &Args)
static void	AnalyzeRetResult (CCState &State, const SmallVectorImpl< ISD::InputArg > &Ins)
static void	AnalyzeRetResult (CCState &State, const SmallVectorImpl< ISD::OutputArg > &Outs)
template<typename ArgT >
static void	AnalyzeReturnValues (CCState &State, SmallVectorImpl< CCValAssign > &RVLocs, const SmallVectorImpl< ArgT > &Args)
static SDValue	EmitCMP (SDValue &LHS, SDValue &RHS, SDValue &TargetCC, ISD::CondCode CC, SDLoc dl, SelectionDAG &DAG)
Variables
static cl::opt< HWMultUseMode >	HWMultMode ("msp430-hwmult-mode", cl::Hidden, cl::desc("Hardware multiplier use mode"), cl::init(HWMultNoIntr), cl::values(clEnumValN(NoHWMult,"no","Do not use hardware multiplier"), clEnumValN(HWMultIntr,"interrupts","Assume hardware multiplier can be used inside interrupts"), clEnumValN(HWMultNoIntr,"use","Assume hardware multiplier cannot be used inside interrupts"), clEnumValEnd))

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Define Documentation

#define DEBUG_TYPE   "msp430-lower"

Definition at line 39 of file MSP430ISelLowering.cpp.

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Enumeration Type Documentation

enum HWMultUseMode

Enumerator:

NoHWMult
HWMultIntr
HWMultNoIntr

Definition at line 41 of file MSP430ISelLowering.cpp.

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Function Documentation

template<typename ArgT >

static void AnalyzeArguments	(	CCState &	State,
		SmallVectorImpl< CCValAssign > &	ArgLocs,
		const SmallVectorImpl< ArgT > &	Args
	)		[static]

Analyze incoming and outgoing function arguments. We need custom C++ code to handle special constraints in the ABI like reversing the order of the pieces of splitted arguments. In addition, all pieces of a certain argument have to be passed either using registers or the stack but never mixing both.

Definition at line 281 of file MSP430ISelLowering.cpp.

References llvm::CCState::addLoc(), llvm::CCValAssign::AExt, llvm::CCState::AllocateReg(), AnalyzeVarArgs(), llvm::array_lengthof(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::CCValAssign::Full, llvm::CCValAssign::getReg(), llvm::CCState::HandleByVal(), llvm::MVT::i16, llvm::MVT::i8, llvm::ISD::ArgFlagsTy::isByVal(), llvm::ISD::ArgFlagsTy::isSExt(), llvm::CCState::isVarArg(), llvm::ISD::ArgFlagsTy::isZExt(), ParseFunctionArgs(), llvm::CCValAssign::SExt, llvm::SmallVectorTemplateCommon< T, typename >::size(), and llvm::CCValAssign::ZExt.

static void AnalyzeRetResult	(	CCState &	State,
		const SmallVectorImpl< ISD::InputArg > &	Ins
	)		[static]

Definition at line 346 of file MSP430ISelLowering.cpp.

References llvm::CCState::AnalyzeCallResult().

Referenced by AnalyzeReturnValues().

static void AnalyzeRetResult	(	CCState &	State,
		const SmallVectorImpl< ISD::OutputArg > &	Outs
	)		[static]

Definition at line 351 of file MSP430ISelLowering.cpp.

References llvm::CCState::AnalyzeReturn().

template<typename ArgT >

static void AnalyzeReturnValues	(	CCState &	State,
		SmallVectorImpl< CCValAssign > &	RVLocs,
		const SmallVectorImpl< ArgT > &	Args
	)		[static]

Definition at line 357 of file MSP430ISelLowering.cpp.

References AnalyzeRetResult(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), and llvm::SmallVectorTemplateCommon< T, typename >::end().

static void AnalyzeVarArgs	(	CCState &	State,
		const SmallVectorImpl< ISD::OutputArg > &	Outs
	)		[static]

Definition at line 266 of file MSP430ISelLowering.cpp.

References llvm::CCState::AnalyzeCallOperands().

Referenced by AnalyzeArguments().

static void AnalyzeVarArgs	(	CCState &	State,
		const SmallVectorImpl< ISD::InputArg > &	Ins
	)		[static]

Definition at line 271 of file MSP430ISelLowering.cpp.

References llvm::CCState::AnalyzeFormalArguments().

static SDValue EmitCMP	(	SDValue &	LHS,
		SDValue &	RHS,
		SDValue &	TargetCC,
		ISD::CondCode	CC,
		SDLoc	dl,
		SelectionDAG &	DAG
	)		[static]

Definition at line 811 of file MSP430ISelLowering.cpp.

References llvm::CallingConv::C, llvm::MSP430ISD::CMP, MSP430CC::COND_E, MSP430CC::COND_GE, MSP430CC::COND_HS, MSP430CC::COND_INVALID, MSP430CC::COND_L, MSP430CC::COND_LO, MSP430CC::COND_NE, llvm::ISD::Constant, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getValueType(), llvm::MVT::Glue, llvm::MVT::i8, llvm::EVT::isFloatingPoint(), llvm_unreachable, llvm::ISD::SETEQ, llvm::ISD::SETGE, llvm::ISD::SETGT, llvm::ISD::SETLE, llvm::ISD::SETLT, llvm::ISD::SETNE, llvm::ISD::SETUGE, llvm::ISD::SETUGT, llvm::ISD::SETULE, llvm::ISD::SETULT, and std::swap().

Referenced by llvm::MSP430TargetLowering::LowerBR_CC(), llvm::MSP430TargetLowering::LowerSELECT_CC(), and llvm::MSP430TargetLowering::LowerSETCC().

template<typename ArgT >

static void ParseFunctionArgs	(	const SmallVectorImpl< ArgT > &	Args,
		SmallVectorImpl< unsigned > &	Out
	)		[static]

For each argument in a function store the number of pieces it is composed of.

Definition at line 253 of file MSP430ISelLowering.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::back(), llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), and llvm::SmallVectorTemplateCommon< T >::size().

Referenced by AnalyzeArguments().

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Variable Documentation

cl::opt<HWMultUseMode> HWMultMode("msp430-hwmult-mode", cl::Hidden, cl::desc("Hardware multiplier use mode"), cl::init(HWMultNoIntr), cl::values(clEnumValN(NoHWMult,"no","Do not use hardware multiplier"),clEnumValN(HWMultIntr,"interrupts","Assume hardware multiplier can be used inside interrupts"),clEnumValN(HWMultNoIntr,"use","Assume hardware multiplier cannot be used inside interrupts"),clEnumValEnd)) [static]

Referenced by llvm::MSP430TargetLowering::MSP430TargetLowering().