class SwiftAggLowering

Declaration

class SwiftAggLowering { /* full declaration omitted */ };

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:41

Member Variables

private clang::CodeGen::CodeGenModule& CGM

private SmallVector<clang::CodeGen::swiftcall:: SwiftAggLowering::StorageEntry, 4> Entries

private bool Finished = false

Method Overview

• public SwiftAggLowering(clang::CodeGen::CodeGenModule & CGM)
• private void addBitFieldData(const clang::FieldDecl * field, clang::CharUnits begin, uint64_t bitOffset)
• private void addEntry(llvm::Type * type, clang::CharUnits begin, clang::CharUnits end)
• private void addLegalTypedData(llvm::Type * type, clang::CharUnits begin, clang::CharUnits end)
• public void addOpaqueData(clang::CharUnits begin, clang::CharUnits end)
• public void addTypedData(clang::QualType type, clang::CharUnits begin)
• public void addTypedData(const clang::RecordDecl * record, clang::CharUnits begin)
• public void addTypedData(const clang::RecordDecl * record, clang::CharUnits begin, const clang::ASTRecordLayout & layout)
• public void addTypedData(llvm::Type * type, clang::CharUnits begin)
• public void addTypedData(llvm::Type * type, clang::CharUnits begin, clang::CharUnits end)
• public bool empty() const
• public void enumerateComponents(clang::CodeGen::swiftcall::SwiftAggLowering::EnumerationCallback callback) const
• public void finish()
• public std::pair<llvm::StructType *, llvm::Type *> getCoerceAndExpandTypes() const
• private static bool shouldMergeEntries(const clang::CodeGen::swiftcall::SwiftAggLowering::StorageEntry & first, const clang::CodeGen::swiftcall::SwiftAggLowering::StorageEntry & second, clang::CharUnits chunkSize)
• public bool shouldPassIndirectly(bool asReturnValue) const
• private void splitVectorEntry(unsigned int index)

Methods

¶SwiftAggLowering(
    clang::CodeGen::CodeGenModule& CGM)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:57

Parameters

clang::CodeGen::CodeGenModule& CGM

¶void addBitFieldData(
    const clang::FieldDecl* field,
    clang::CharUnits begin,
    uint64_t bitOffset)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:111

Parameters

const clang::FieldDecl* field

clang::CharUnits begin

uint64_t bitOffset

¶void addEntry(llvm::Type* type,
              clang::CharUnits begin,
              clang::CharUnits end)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:114

Parameters

llvm::Type* type

clang::CharUnits begin

clang::CharUnits end

¶void addLegalTypedData(llvm::Type* type,
                       clang::CharUnits begin,
                       clang::CharUnits end)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:113

Parameters

llvm::Type* type

clang::CharUnits begin

clang::CharUnits end

¶void addOpaqueData(clang::CharUnits begin,
                   clang::CharUnits end)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:59

Parameters

clang::CharUnits begin

clang::CharUnits end

¶void addTypedData(clang::QualType type,
                  clang::CharUnits begin)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:63

Parameters

clang::QualType type

clang::CharUnits begin

¶void addTypedData(const clang::RecordDecl* record,
                  clang::CharUnits begin)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:64

Parameters

const clang::RecordDecl* record

clang::CharUnits begin

¶void addTypedData(
    const clang::RecordDecl* record,
    clang::CharUnits begin,
    const clang::ASTRecordLayout& layout)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:65

Parameters

const clang::RecordDecl* record

clang::CharUnits begin

const clang::ASTRecordLayout& layout

¶void addTypedData(llvm::Type* type,
                  clang::CharUnits begin)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:67

Parameters

llvm::Type* type

clang::CharUnits begin

¶void addTypedData(llvm::Type* type,
                  clang::CharUnits begin,
                  clang::CharUnits end)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:68

Parameters

llvm::Type* type

clang::CharUnits begin

clang::CharUnits end

¶bool empty() const

Description

Does this lowering require passing any data?

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:73

¶void enumerateComponents(
    clang::CodeGen::swiftcall::SwiftAggLowering::
        EnumerationCallback callback) const

Description

Enumerate the expanded components of this type. The component types will always be legal vector, floating-point, integer, or pointer types.

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:98

Parameters

clang::CodeGen::swiftcall::SwiftAggLowering:: EnumerationCallback callback

¶void finish()

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:70

¶std::pair<llvm::StructType*, llvm::Type*>
getCoerceAndExpandTypes() const

Description

Return the types for a coerce-and-expand operation. The first type matches the memory layout of the data that's been added to this structure, including explicit [N x i8] arrays for any internal padding. The second type removes any internal padding members and, if only one element remains, is simply that element type.

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:108

¶static bool shouldMergeEntries(
    const clang::CodeGen::swiftcall::
        SwiftAggLowering::StorageEntry& first,
    const clang::CodeGen::swiftcall::
        SwiftAggLowering::StorageEntry& second,
    clang::CharUnits chunkSize)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:116

Parameters

const clang::CodeGen::swiftcall:: SwiftAggLowering::StorageEntry& first

const clang::CodeGen::swiftcall:: SwiftAggLowering::StorageEntry& second

clang::CharUnits chunkSize

¶bool shouldPassIndirectly(
    bool asReturnValue) const

Description

According to the target Swift ABI, should a value with this lowering be passed indirectly? Note that this decision is based purely on the data layout of the value and does not consider whether the type is address-only, must be passed indirectly to match a function abstraction pattern, or anything else that is expected to be handled by high-level lowering.

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:89

Parameters

bool asReturnValue

- if true, answer whether it should be passed indirectly as a return value; if false, answer whether it should be passed indirectly as an argument

¶void splitVectorEntry(unsigned int index)

Declared at: clang/include/clang/CodeGen/SwiftCallingConv.h:115

Parameters

unsigned int index