LanaiTargetObjectFile.cpp Source File (original) (raw)

18using namespace llvm;

21 "lanai-ssection-threshold", cl::Hidden,

22 cl::desc("Small data and bss section threshold size (default=0)"),

33}

42}

46bool LanaiTargetObjectFile::isGlobalInSmallSection(

54 return isGlobalInSmallSectionImpl(GO, TM);

57}

61bool LanaiTargetObjectFile::isGlobalInSmallSection(const GlobalObject *GO,

64 return isGlobalInSmallSectionImpl(GO, TM);

65}

70bool LanaiTargetObjectFile::isGlobalInSmallSectionImpl(

72 const auto *GVA = dyn_cast(GO);

80 if (GVA->getSection().starts_with(".ldata"))

81 return false;

84 return true;

86 if (GVA->hasLocalLinkage())

87 return false;

89 if (((GVA->hasExternalLinkage() && GVA->isDeclaration()) ||

90 GVA->hasCommonLinkage()))

91 return false;

93 Type *Ty = GVA->getValueType();

95 GVA->getDataLayout().getTypeAllocSize(Ty));

96}

100

101 if (Kind.isBSS() && isGlobalInSmallSection(GO, TM, Kind))

102 return SmallBSSSection;

103 if (Kind.isData() && isGlobalInSmallSection(GO, TM, Kind))

104 return SmallDataSection;

105

106

108}

109

110

114}

115

118 Align &Alignment) const {

120 return SmallDataSection;

121

122

124 Alignment);

125}

MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL

static cl::opt< unsigned > SSThreshold("lanai-ssection-threshold", cl::Hidden, cl::desc("Small data and bss section threshold size (default=0)"), cl::init(0))

static bool isInSmallSection(uint64_t Size)

This is an important base class in LLVM.

A parsed version of the target data layout string in and methods for querying it.

bool isDeclaration() const

Return true if the primary definition of this global value is outside of the current translation unit...

bool hasAvailableExternallyLinkage() const

MCSection * getSectionForConstant(const DataLayout &DL, SectionKind Kind, const Constant *C, Align &Alignment) const override

Given a constant with the SectionKind, return a section that it should be placed in.

void Initialize(MCContext &Ctx, const TargetMachine &TM) override

This method must be called before any actual lowering is done.

MCSection * SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const override

bool isConstantInSmallSection(const DataLayout &DL, const Constant *CN) const

Return true if this constant should be placed into small data section.

Context object for machine code objects.

MCSectionELF * getELFSection(const Twine &Section, unsigned Type, unsigned Flags)

MCContext & getContext() const

Instances of this class represent a uniqued identifier for a section in the current translation unit.

SectionKind - This is a simple POD value that classifies the properties of a section.

void Initialize(MCContext &Ctx, const TargetMachine &TM) override

This method must be called before any actual lowering is done.

MCSection * getSectionForConstant(const DataLayout &DL, SectionKind Kind, const Constant *C, Align &Alignment) const override

Given a constant with the SectionKind, return a section that it should be placed in.

MCSection * SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const override

static SectionKind getKindForGlobal(const GlobalObject *GO, const TargetMachine &TM)

Classify the specified global variable into a set of target independent categories embodied in Sectio...

Primary interface to the complete machine description for the target machine.

CodeModel::Model getCodeModel() const

Returns the code model.

The instances of the Type class are immutable: once they are created, they are never changed.

Type * getType() const

All values are typed, get the type of this value.

@ C

The default llvm calling convention, compatible with C.

initializer< Ty > init(const Ty &Val)

This is an optimization pass for GlobalISel generic memory operations.

This struct is a compact representation of a valid (non-zero power of two) alignment.