MSP430ISelLowering.cpp File Reference

#include "MSP430ISelLowering.h"
#include "MSP430.h"
#include "MSP430MachineFunctionInfo.h"
#include "MSP430SelectionDAGInfo.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/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/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"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "msp430-lower"

Functions
template<typename ArgT>
static void	ParseFunctionArgs (const SmallVectorImpl< ArgT > &Args, SmallVectorImpl< unsigned > &Out)
	For each argument in a function store the number of pieces it is composed of.
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)
	Analyze incoming and outgoing function arguments.
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, const SDLoc &dl, SelectionDAG &DAG)

Variables
static cl::opt< bool >	MSP430NoLegalImmediate ("msp430-no-legal-immediate", cl::Hidden, cl::desc("Enable non legal immediates (for testing purposes only)"), cl::init(false))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "msp430-lower"

Definition at line 36 of file MSP430ISelLowering.cpp.

Function Documentation

AnalyzeArguments()

template<typename ArgT>

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 335 of file MSP430ISelLowering.cpp.

References llvm::CCValAssign::AExt, AnalyzeVarArgs(), assert(), llvm::CCValAssign::Full, llvm::CCValAssign::getReg(), llvm::ISD::ArgFlagsTy::isByVal(), llvm::ISD::ArgFlagsTy::isSExt(), llvm::ISD::ArgFlagsTy::isZExt(), llvm::CallingConv::MSP430_BUILTIN, ParseFunctionArgs(), Reg, llvm::CCValAssign::SExt, llvm::SmallVectorTemplateCommon< T, typename >::size(), and llvm::CCValAssign::ZExt.

AnalyzeRetResult() [1/2]

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

static

Definition at line 432 of file MSP430ISelLowering.cpp.

Referenced by AnalyzeReturnValues().

AnalyzeRetResult() [2/2]

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

static

Definition at line 437 of file MSP430ISelLowering.cpp.

AnalyzeReturnValues()

template<typename ArgT>

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

static

Definition at line 443 of file MSP430ISelLowering.cpp.

References AnalyzeRetResult().

AnalyzeVarArgs() [1/2]

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

static

Definition at line 325 of file MSP430ISelLowering.cpp.

AnalyzeVarArgs() [2/2]

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

static

Definition at line 320 of file MSP430ISelLowering.cpp.

Referenced by AnalyzeArguments().

EmitCMP()

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

static

Definition at line 923 of file MSP430ISelLowering.cpp.

References assert(), llvm::CallingConv::C, 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::dyn_cast(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), LHS, llvm_unreachable, RHS, 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().

ParseFunctionArgs()

template<typename ArgT>

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 300 of file MSP430ISelLowering.cpp.

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

Referenced by AnalyzeArguments().

Variable Documentation

MSP430NoLegalImmediate

cl::opt< bool > MSP430NoLegalImmediate("msp430-no-legal-immediate", cl::Hidden, cl::desc("Enable non legal immediates (for testing purposes only)"), cl::init(false)) ( "msp430-no-legal-immediate" , cl::Hidden , cl::desc("Enable non legal immediates (for testing purposes only)") , cl::init(false)  )

static

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