clang
15.0.0git
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#include "TargetInfo.h"
#include "ABIInfo.h"
#include "CGBlocks.h"
#include "CGCXXABI.h"
#include "CGValue.h"
#include "CodeGenFunction.h"
#include "clang/AST/Attr.h"
#include "clang/AST/RecordLayout.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/CodeGenOptions.h"
#include "clang/Basic/DiagnosticFrontend.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "clang/CodeGen/SwiftCallingConv.h"
#include "llvm/ADT/SmallBitVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/IntrinsicsNVPTX.h"
#include "llvm/IR/IntrinsicsS390.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
Go to the source code of this file.
Namespaces | |
clang | |
clang::CodeGen | |
Functions | |
static ABIArgInfo | coerceToIntArray (QualType Ty, ASTContext &Context, llvm::LLVMContext &LLVMContext) |
static void | AssignToArrayRange (CodeGen::CGBuilderTy &Builder, llvm::Value *Array, llvm::Value *Value, unsigned FirstIndex, unsigned LastIndex) |
static bool | isAggregateTypeForABI (QualType T) |
static llvm::Type * | getVAListElementType (CodeGenFunction &CGF) |
static bool | occupiesMoreThan (CodeGenTypes &cgt, ArrayRef< llvm::Type * > scalarTypes, unsigned maxAllRegisters) |
Does the given lowering require more than the given number of registers when expanded? More... | |
static CGCXXABI::RecordArgABI | getRecordArgABI (const RecordType *RT, CGCXXABI &CXXABI) |
static CGCXXABI::RecordArgABI | getRecordArgABI (QualType T, CGCXXABI &CXXABI) |
static bool | classifyReturnType (const CGCXXABI &CXXABI, CGFunctionInfo &FI, const ABIInfo &Info) |
static QualType | useFirstFieldIfTransparentUnion (QualType Ty) |
Pass transparent unions as if they were the type of the first element. More... | |
static llvm::Value * | emitRoundPointerUpToAlignment (CodeGenFunction &CGF, llvm::Value *Ptr, CharUnits Align) |
static Address | emitVoidPtrDirectVAArg (CodeGenFunction &CGF, Address VAListAddr, llvm::Type *DirectTy, CharUnits DirectSize, CharUnits DirectAlign, CharUnits SlotSize, bool AllowHigherAlign) |
Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack. More... | |
static Address | emitVoidPtrVAArg (CodeGenFunction &CGF, Address VAListAddr, QualType ValueTy, bool IsIndirect, TypeInfoChars ValueInfo, CharUnits SlotSizeAndAlign, bool AllowHigherAlign) |
Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack. More... | |
static Address | complexTempStructure (CodeGenFunction &CGF, Address VAListAddr, QualType Ty, CharUnits SlotSize, CharUnits EltSize, const ComplexType *CTy) |
static Address | emitMergePHI (CodeGenFunction &CGF, Address Addr1, llvm::BasicBlock *Block1, Address Addr2, llvm::BasicBlock *Block2, const llvm::Twine &Name="") |
static bool | isEmptyRecord (ASTContext &Context, QualType T, bool AllowArrays) |
isEmptyRecord - Return true iff a structure contains only empty fields. More... | |
static bool | isEmptyField (ASTContext &Context, const FieldDecl *FD, bool AllowArrays) |
isEmptyField - Return true iff a the field is "empty", that is it is an unnamed bit-field or an (array of) empty record(s). More... | |
static const Type * | isSingleElementStruct (QualType T, ASTContext &Context) |
isSingleElementStruct - Determine if a structure is a "single
element struct", i.e. More... | |
static void | rewriteInputConstraintReferences (unsigned FirstIn, unsigned NumNewOuts, std::string &AsmString) |
Rewrite input constraint references after adding some output constraints. More... | |
static bool | is32Or64BitBasicType (QualType Ty, ASTContext &Context) |
static bool | addFieldSizes (ASTContext &Context, const RecordDecl *RD, uint64_t &Size) |
static bool | addBaseAndFieldSizes (ASTContext &Context, const CXXRecordDecl *RD, uint64_t &Size) |
static bool | isSIMDVectorType (ASTContext &Context, QualType Ty) |
static bool | isRecordWithSIMDVectorType (ASTContext &Context, QualType Ty) |
static bool | isArgInAlloca (const ABIArgInfo &Info) |
static void | addX86InterruptAttrs (const FunctionDecl *FD, llvm::GlobalValue *GV, CodeGen::CodeGenModule &CGM) |
static bool | BitsContainNoUserData (QualType Ty, unsigned StartBit, unsigned EndBit, ASTContext &Context) |
BitsContainNoUserData - Return true if the specified [start,end) bit range is known to either be off the end of the specified type or being in alignment padding. More... | |
static llvm::Type * | getFPTypeAtOffset (llvm::Type *IRType, unsigned IROffset, const llvm::DataLayout &TD) |
getFPTypeAtOffset - Return a floating point type at the specified offset. More... | |
static llvm::Type * | GetX86_64ByValArgumentPair (llvm::Type *Lo, llvm::Type *Hi, const llvm::DataLayout &TD) |
GetX86_64ByValArgumentPair - Given a high and low type that can ideally be used as elements of a two register pair to pass or return, return a first class aggregate to represent them. More... | |
static Address | EmitX86_64VAArgFromMemory (CodeGenFunction &CGF, Address VAListAddr, QualType Ty) |
static bool | PPC_initDwarfEHRegSizeTable (CodeGen::CodeGenFunction &CGF, llvm::Value *Address, bool Is64Bit, bool IsAIX) |
static bool | isIntegerLikeType (QualType Ty, ASTContext &Context, llvm::LLVMContext &VMContext) |
static bool | HexagonAdjustRegsLeft (uint64_t Size, unsigned *RegsLeft) |
static bool | requiresAMDGPUProtectedVisibility (const Decl *D, llvm::GlobalValue *GV) |
static bool | getTypeString (SmallStringEnc &Enc, const Decl *D, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
The XCore ABI includes a type information section that communicates symbol type information to the linker. More... | |
void | clang::CodeGen::computeSPIRKernelABIInfo (CodeGenModule &CGM, CGFunctionInfo &FI) |
static bool | appendType (SmallStringEnc &Enc, QualType QType, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
Handles the type's qualifier before dispatching a call to handle specific type encodings. More... | |
static bool | extractFieldType (SmallVectorImpl< FieldEncoding > &FE, const RecordDecl *RD, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
Helper function for appendRecordType(). More... | |
static bool | appendRecordType (SmallStringEnc &Enc, const RecordType *RT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC, const IdentifierInfo *ID) |
Appends structure and union types to Enc and adds encoding to cache. More... | |
static bool | appendEnumType (SmallStringEnc &Enc, const EnumType *ET, TypeStringCache &TSC, const IdentifierInfo *ID) |
Appends enum types to Enc and adds the encoding to the cache. More... | |
static void | appendQualifier (SmallStringEnc &Enc, QualType QT) |
Appends type's qualifier to Enc. More... | |
static bool | appendBuiltinType (SmallStringEnc &Enc, const BuiltinType *BT) |
Appends built-in types to Enc. More... | |
static bool | appendPointerType (SmallStringEnc &Enc, const PointerType *PT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
Appends a pointer encoding to Enc before calling appendType for the pointee. More... | |
static bool | appendArrayType (SmallStringEnc &Enc, QualType QT, const ArrayType *AT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC, StringRef NoSizeEnc) |
Appends array encoding to Enc before calling appendType for the element. More... | |
static bool | appendFunctionType (SmallStringEnc &Enc, const FunctionType *FT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
Appends a function encoding to Enc, calling appendType for the return type and the arguments. More... | |
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Definition at line 1453 of file TargetInfo.cpp.
References addFieldSizes(), and clang::CXXRecordDecl::bases().
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Definition at line 1433 of file TargetInfo.cpp.
References clang::RecordDecl::fields(), clang::ASTContext::getTypeSize(), and is32Or64BitBasicType().
Referenced by addBaseAndFieldSizes().
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Definition at line 2151 of file TargetInfo.cpp.
References clang::CodeGen::CodeGenTypes::ConvertType(), clang::FunctionDecl::getNumParams(), clang::FunctionDecl::getParamDecl(), clang::ValueDecl::getType(), clang::CodeGen::CodeGenModule::getTypes(), and clang::Decl::hasAttr().
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Appends array encoding to Enc before calling appendType for the element.
Definition at line 10685 of file TargetInfo.cpp.
References appendQualifier(), appendType(), clang::ArrayType::getElementType(), clang::ArrayType::getSizeModifier(), and clang::ArrayType::Normal.
Referenced by appendType(), and getTypeString().
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Appends built-in types to Enc.
Definition at line 10615 of file TargetInfo.cpp.
References clang::RISCV::Float, and clang::BuiltinType::getKind().
Referenced by appendType().
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Appends enum types to Enc and adds the encoding to the cache.
Definition at line 10557 of file TargetInfo.cpp.
References clang::EnumType::getDecl(), and clang::EnumDecl::getDefinition().
Referenced by appendType().
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Appends a function encoding to Enc, calling appendType for the return type and the arguments.
Definition at line 10707 of file TargetInfo.cpp.
References appendType(), clang::Type::getAs(), and clang::FunctionType::getReturnType().
Referenced by appendType().
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Appends a pointer encoding to Enc before calling appendType for the pointee.
Definition at line 10674 of file TargetInfo.cpp.
References appendType(), and clang::PointerType::getPointeeType().
Referenced by appendType().
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Appends type's qualifier to Enc.
This is done prior to appending the type's encoding.
Definition at line 10601 of file TargetInfo.cpp.
References clang::QualType::isConstQualified(), clang::QualType::isRestrictQualified(), and clang::QualType::isVolatileQualified().
Referenced by appendArrayType(), and appendType().
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Appends structure and union types to Enc and adds encoding to cache.
Recursively calls appendType (via extractFieldType) for each field. Union types have their fields ordered according to the ABI.
Definition at line 10505 of file TargetInfo.cpp.
References extractFieldType(), clang::RecordDecl::field_empty(), clang::RecordType::getDecl(), clang::RecordDecl::getDefinition(), clang::Type::isUnionType(), and string().
Referenced by appendType().
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Handles the type's qualifier before dispatching a call to handle specific type encodings.
Definition at line 10741 of file TargetInfo.cpp.
References appendArrayType(), appendBuiltinType(), appendEnumType(), appendFunctionType(), appendPointerType(), appendQualifier(), appendRecordType(), clang::Type::getAs(), clang::Type::getAsArrayTypeUnsafe(), clang::Type::getAsStructureType(), clang::Type::getAsUnionType(), clang::QualType::getBaseTypeIdentifier(), and clang::QualType::getCanonicalType().
Referenced by appendArrayType(), appendFunctionType(), appendPointerType(), extractFieldType(), and getTypeString().
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Definition at line 68 of file TargetInfo.cpp.
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BitsContainNoUserData - Return true if the specified [start,end) bit range is known to either be off the end of the specified type or being in alignment padding.
The user type specified is known to be at most 128 bits in size, and have passed through X86_64ABIInfo::classify with a successful classification that put one of the two halves in the INTEGER class.
It is conservatively correct to return false.
Definition at line 3346 of file TargetInfo.cpp.
References clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::ASTContext::getASTRecordLayout(), clang::ASTRecordLayout::getBaseClassOffset(), clang::RecordType::getDecl(), clang::ASTRecordLayout::getFieldOffset(), clang::ASTContext::getTypeSize(), and clang::ASTContext::toBits().
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Definition at line 181 of file TargetInfo.cpp.
References clang::Type::getAs(), clang::CodeGen::ABIInfo::getNaturalAlignIndirect(), clang::CodeGen::CGFunctionInfo::getReturnInfo(), and clang::CodeGen::CGFunctionInfo::getReturnType().
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Definition at line 57 of file TargetInfo.cpp.
References clang::CodeGen::ABIArgInfo::getDirect(), clang::ASTContext::getTypeAlign(), and clang::ASTContext::getTypeSize().
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Definition at line 399 of file TargetInfo.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateConstInBoundsByteGEP(), clang::CodeGen::CGBuilderTy::CreateElementBitCast(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CodeGenFunction::CreateMemTemp(), clang::CodeGen::CodeGenFunction::EmitStoreOfComplex(), emitVoidPtrDirectVAArg(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::ComplexType::getElementType(), clang::CodeGen::CodeGenTypeCache::Int8Ty, and clang::CodeGen::CodeGenFunction::MakeAddrLValue().
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Definition at line 429 of file TargetInfo.cpp.
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Definition at line 285 of file TargetInfo.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CharUnits::getQuantity(), and clang::CodeGen::CodeGenTypeCache::IntPtrTy.
Referenced by emitVoidPtrDirectVAArg(), and EmitX86_64VAArgFromMemory().
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Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack.
This version implements the core direct-value passing rules.
SlotSize | - The size and alignment of a stack slot. Each argument will be allocated to a multiple of this number of slots, and all the slots will be aligned to this value. |
AllowHigherAlign | - The slot alignment is not a cap; an argument type with an alignment greater than the slot size will be emitted on a higher-alignment address, potentially leaving one or more empty slots behind as padding. If this is false, the returned address might be less-aligned than DirectAlign. |
Definition at line 315 of file TargetInfo.cpp.
References clang::CharUnits::alignTo(), clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::CGM, clang::CodeGen::CGBuilderTy::CreateConstInBoundsByteGEP(), clang::CodeGen::CGBuilderTy::CreateElementBitCast(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CGBuilderTy::CreateStore(), emitRoundPointerUpToAlignment(), clang::CodeGen::CodeGenModule::getDataLayout(), clang::CodeGen::Address::getElementType(), clang::CodeGen::Address::getPointer(), clang::CodeGen::CodeGenTypeCache::Int8PtrTy, clang::CodeGen::CodeGenTypeCache::Int8Ty, and clang::CodeGen::Address::invalid().
Referenced by complexTempStructure(), and emitVoidPtrVAArg().
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Emit va_arg for a platform using the common void* representation, where arguments are simply emitted in an array of slots on the stack.
IsIndirect | - Values of this type are passed indirectly. |
ValueInfo | - The size and alignment of this type, generally computed with getContext().getTypeInfoInChars(ValueTy). |
SlotSizeAndAlign | - The size and alignment of a stack slot. Each argument will be allocated to a multiple of this number of slots, and all the slots will be aligned to this value. |
AllowHigherAlign | - The slot alignment is not a cap; an argument type with an alignment greater than the slot size will be emitted on a higher-alignment address, potentially leaving one or more empty slots behind as padding. |
Definition at line 368 of file TargetInfo.cpp.
References clang::TypeInfoChars::Align, clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateLoad(), emitVoidPtrDirectVAArg(), clang::CodeGen::CodeGenTypeCache::getPointerAlign(), clang::CodeGen::CodeGenTypeCache::getPointerSize(), and clang::TypeInfoChars::Width.
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Definition at line 4029 of file TargetInfo.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CGBuilderTy::CreateGEP(), clang::CodeGen::CGBuilderTy::CreateLoad(), clang::CodeGen::CGBuilderTy::CreateStore(), clang::CodeGen::CGBuilderTy::CreateStructGEP(), emitRoundPointerUpToAlignment(), clang::CharUnits::fromQuantity(), clang::CodeGen::CodeGenFunction::getContext(), clang::ASTContext::getTypeAlignInChars(), clang::ASTContext::getTypeSize(), clang::CodeGen::CodeGenTypeCache::Int32Ty, clang::CodeGen::CodeGenTypeCache::Int8Ty, and Offset.
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Helper function for appendRecordType().
Builds a SmallVector containing the encoded field types in declaration order.
Definition at line 10477 of file TargetInfo.cpp.
References appendType(), clang::RecordDecl::fields(), and clang::CodeGen::CodeGenModule::getContext().
Referenced by appendRecordType().
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getFPTypeAtOffset - Return a floating point type at the specified offset.
Definition at line 3424 of file TargetInfo.cpp.
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Definition at line 162 of file TargetInfo.cpp.
References clang::RecordDecl::canPassInRegisters(), clang::RecordType::getDecl(), clang::CodeGen::CGCXXABI::RAA_Default, and clang::CodeGen::CGCXXABI::RAA_Indirect.
Referenced by getRecordArgABI().
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Definition at line 173 of file TargetInfo.cpp.
References clang::Type::getAs(), getRecordArgABI(), and clang::CodeGen::CGCXXABI::RAA_Default.
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The XCore ABI includes a type information section that communicates symbol type information to the linker.
The linker uses this information to verify safety/correctness of things such as array bound and pointers et al. The ABI only requires C (and XC) language modules to emit TypeStrings. This type information (TypeString) is emitted into meta data for all global symbols: definitions, declarations, functions & variables.
The TypeString carries type, qualifier, name, size & value details. Please see 'Tools Development Guide' section 2.16.2 for format details: https://www.xmos.com/download/public/Tools-Development-Guide%28X9114A%29.pdf The output is tested by test/CodeGen/xcore-stringtype.c.
Definition at line 10775 of file TargetInfo.cpp.
References appendArrayType(), appendType(), clang::CLanguageLinkage, clang::Type::getAsArrayTypeUnsafe(), clang::QualType::getCanonicalType(), clang::VarDecl::getLanguageLinkage(), clang::FunctionDecl::getLanguageLinkage(), and clang::ValueDecl::getType().
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Definition at line 104 of file TargetInfo.cpp.
References clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::ASTContext::getBuiltinVaListType(), clang::CodeGen::CodeGenFunction::getContext(), and clang::Type::getPointeeType().
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GetX86_64ByValArgumentPair - Given a high and low type that can ideally be used as elements of a two register pair to pass or return, return a first class aggregate to represent them.
For example, if the low part of a by-value argument should be passed as i32* and the high part as float, return {i32*, float}.
Definition at line 3582 of file TargetInfo.cpp.
Definition at line 8543 of file TargetInfo.cpp.
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Definition at line 1417 of file TargetInfo.cpp.
References clang::Type::getAs(), clang::ASTContext::getTypeSize(), clang::Type::hasPointerRepresentation(), clang::Type::isBlockPointerType(), and clang::Type::isEnumeralType().
Referenced by addFieldSizes().
Definition at line 81 of file TargetInfo.cpp.
References clang::CodeGen::CodeGenFunction::hasScalarEvaluationKind(), and clang::Type::isMemberFunctionPointerType().
Referenced by isSingleElementStruct().
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Definition at line 2042 of file TargetInfo.cpp.
References clang::CodeGen::ABIArgInfo::CoerceAndExpand, clang::CodeGen::ABIArgInfo::Direct, clang::CodeGen::ABIArgInfo::Expand, clang::CodeGen::ABIArgInfo::Extend, clang::CodeGen::ABIArgInfo::getInReg(), clang::CodeGen::ABIArgInfo::getKind(), clang::CodeGen::ABIArgInfo::Ignore, clang::CodeGen::ABIArgInfo::InAlloca, clang::CodeGen::ABIArgInfo::Indirect, and clang::CodeGen::ABIArgInfo::IndirectAliased.
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isEmptyField - Return true iff a the field is "empty", that is it is an unnamed bit-field or an (array of) empty record(s).
Definition at line 534 of file TargetInfo.cpp.
References clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::RecordType::getDecl(), clang::ValueDecl::getType(), clang::Decl::hasAttr(), isEmptyRecord(), and clang::FieldDecl::isUnnamedBitfield().
Referenced by isEmptyRecord(), and isSingleElementStruct().
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isEmptyRecord - Return true iff a structure contains only empty fields.
Note that a structure with a flexible array member is not considered empty.
Definition at line 578 of file TargetInfo.cpp.
References clang::RecordDecl::fields(), clang::Type::getAs(), clang::RecordType::getDecl(), clang::RecordDecl::hasFlexibleArrayMember(), and isEmptyField().
Referenced by isEmptyField(), clang::CodeGen::ABIInfo::isHomogeneousAggregate(), and isSingleElementStruct().
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Definition at line 6707 of file TargetInfo.cpp.
References clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::Type::getAs(), clang::ASTContext::getASTRecordLayout(), clang::RecordType::getDecl(), clang::ASTRecordLayout::getFieldOffset(), clang::ValueDecl::getType(), clang::ASTContext::getTypeSize(), clang::RecordDecl::hasFlexibleArrayMember(), clang::FieldDecl::isBitField(), clang::Type::isPointerType(), clang::Type::isRealFloatingType(), clang::TagDecl::isUnion(), and clang::Type::isVectorType().
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Definition at line 1611 of file TargetInfo.cpp.
References clang::RecordDecl::fields(), clang::Type::getAs(), clang::RecordType::getDecl(), and isSIMDVectorType().
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Definition at line 1607 of file TargetInfo.cpp.
References clang::Type::getAs(), and clang::ASTContext::getTypeSize().
Referenced by isRecordWithSIMDVectorType().
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isSingleElementStruct - Determine if a structure is a "single element struct", i.e.
it has exactly one non-empty field or exactly one field which is itself a single element struct. Structures with flexible array members are never considered single element structs.
Definition at line 606 of file TargetInfo.cpp.
References clang::RecordDecl::fields(), clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::RecordType::getDecl(), clang::QualType::getTypePtr(), clang::ASTContext::getTypeSize(), clang::RecordDecl::hasFlexibleArrayMember(), isAggregateTypeForABI(), isEmptyField(), and isEmptyRecord().
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Does the given lowering require more than the given number of registers when expanded?
This is intended to be the basis of a reasonable basic implementation of should{Pass,Return}IndirectlyForSwift.
For most targets, a limit of four total registers is reasonable; this limits the amount of code required in order to move around the value in case it wasn't produced immediately prior to the call by the caller (or wasn't produced in exactly the right registers) or isn't used immediately within the callee. But some targets may need to further limit the register count due to an inability to support that many return registers.
Definition at line 135 of file TargetInfo.cpp.
References clang::TargetInfo::getPointerWidth(), and clang::CodeGen::CodeGenTypes::getTarget().
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Definition at line 4471 of file TargetInfo.cpp.
Definition at line 9311 of file TargetInfo.cpp.
References clang::Decl::hasAttr(), and clang::HiddenVisibility.
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Rewrite input constraint references after adding some output constraints.
In the case where there is one output and one input and we add one output, we need to replace all operand references greater than or equal to 1: mov $0, $1 mov eax, $1 The result will be: mov $0, $2 mov eax, $2
Definition at line 1291 of file TargetInfo.cpp.
References string().
Pass transparent unions as if they were the type of the first element.
Sema should ensure that all elements of the union have the same "machine type".
Definition at line 197 of file TargetInfo.cpp.
References clang::RecordDecl::field_begin(), clang::RecordDecl::field_empty(), clang::Type::getAsUnionType(), and clang::Decl::hasAttr().