clang
3.7.0
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#include "TargetInfo.h"
#include "ABIInfo.h"
#include "CGCXXABI.h"
#include "CGValue.h"
#include "CodeGenFunction.h"
#include "clang/AST/RecordLayout.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "clang/Frontend/CodeGenOptions.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
Go to the source code of this file.
Enumerations | |
enum | X86AVXABILevel |
The AVX ABI level for X86 targets. More... | |
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static void | AssignToArrayRange (CodeGen::CGBuilderTy &Builder, llvm::Value *Array, llvm::Value *Value, unsigned FirstIndex, unsigned LastIndex) |
static bool | isAggregateTypeForABI (QualType T) |
static CGCXXABI::RecordArgABI | getRecordArgABI (const RecordType *RT, CGCXXABI &CXXABI) |
static CGCXXABI::RecordArgABI | getRecordArgABI (QualType T, CGCXXABI &CXXABI) |
static QualType | useFirstFieldIfTransparentUnion (QualType Ty) |
static bool | isEmptyRecord (ASTContext &Context, QualType T, bool AllowArrays) |
static bool | isEmptyField (ASTContext &Context, const FieldDecl *FD, bool AllowArrays) |
static const Type * | isSingleElementStruct (QualType T, ASTContext &Context) |
static bool | is32Or64BitBasicType (QualType Ty, ASTContext &Context) |
static bool | canExpandIndirectArgument (QualType Ty, ASTContext &Context) |
static void | rewriteInputConstraintReferences (unsigned FirstIn, unsigned NumNewOuts, std::string &AsmString) |
static bool | isSSEVectorType (ASTContext &Context, QualType Ty) |
static bool | isRecordWithSSEVectorType (ASTContext &Context, QualType Ty) |
static bool | isArgInAlloca (const ABIArgInfo &Info) |
static bool | BitsContainNoUserData (QualType Ty, unsigned StartBit, unsigned EndBit, ASTContext &Context) |
static bool | ContainsFloatAtOffset (llvm::Type *IRType, unsigned IROffset, const llvm::DataLayout &TD) |
static llvm::Type * | GetX86_64ByValArgumentPair (llvm::Type *Lo, llvm::Type *Hi, const llvm::DataLayout &TD) |
static llvm::Value * | EmitVAArgFromMemory (llvm::Value *VAListAddr, QualType Ty, CodeGenFunction &CGF) |
static bool | PPC64_initDwarfEHRegSizeTable (CodeGen::CodeGenFunction &CGF, llvm::Value *Address) |
static bool | isIntegerLikeType (QualType Ty, ASTContext &Context, llvm::LLVMContext &VMContext) |
static bool | getTypeString (SmallStringEnc &Enc, const Decl *D, CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
static bool | appendType (SmallStringEnc &Enc, QualType QType, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
static bool | extractFieldType (SmallVectorImpl< FieldEncoding > &FE, const RecordDecl *RD, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC) |
static bool | appendRecordType (SmallStringEnc &Enc, const RecordType *RT, const CodeGen::CodeGenModule &CGM, TypeStringCache &TSC, const IdentifierInfo *ID) |
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) |
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) |
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The AVX ABI level for X86 targets.
Definition at line 1395 of file CodeGen/TargetInfo.cpp.
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Appends array encoding to Enc before calling appendType for the element.
Definition at line 6975 of file CodeGen/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 6905 of file CodeGen/TargetInfo.cpp.
References 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 6847 of file CodeGen/TargetInfo.cpp.
References clang::EnumType::getDecl(), clang::EnumDecl::getDefinition(), and clang::IdentifierInfo::getName().
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 6997 of file CodeGen/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 6964 of file CodeGen/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 6891 of file CodeGen/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 6795 of file CodeGen/TargetInfo.cpp.
References extractFieldType(), clang::RecordDecl::field_empty(), clang::RecordType::getDecl(), clang::RecordDecl::getDefinition(), clang::IdentifierInfo::getName(), and clang::Type::isUnionType().
Referenced by appendType().
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Handles the type's qualifier before dispatching a call to handle specific type encodings.
Definition at line 7031 of file CodeGen/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 33 of file CodeGen/TargetInfo.cpp.
Referenced by PPC64_initDwarfEHRegSizeTable().
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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 2280 of file CodeGen/TargetInfo.cpp.
References Context, 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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canExpandIndirectArgument - Test whether an argument type which is to be passed indirectly (on the stack) would have the equivalent layout if it was expanded into separate arguments. If so, we prefer to do the latter to avoid inhibiting optimizations.
Definition at line 337 of file CodeGen/TargetInfo.cpp.
References Context, clang::RecordDecl::fields(), clang::Type::getAs(), clang::RecordType::getDecl(), clang::ASTContext::getTypeSize(), is32Or64BitBasicType(), and clang::TagDecl::isStruct().
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ContainsFloatAtOffset - Return true if the specified LLVM IR type has a float member at the specified offset. For example, {int,{float}} has a float at offset 4. It is conservatively correct for this routine to return false.
Definition at line 2361 of file CodeGen/TargetInfo.cpp.
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Definition at line 2832 of file CodeGen/TargetInfo.cpp.
References clang::CodeGen::CodeGenFunction::Builder, clang::CodeGen::CodeGenFunction::ConvertTypeForMem(), clang::CodeGen::CodeGenFunction::getContext(), clang::ASTContext::getTypeAlign(), clang::ASTContext::getTypeSize(), clang::CodeGen::CodeGenTypeCache::Int32Ty, and clang::CodeGen::CodeGenTypeCache::Int64Ty.
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Helper function for appendRecordType(). Builds a SmallVector containing the encoded field types in declaration order.
Definition at line 6765 of file CodeGen/TargetInfo.cpp.
References appendType(), clang::RecordDecl::fields(), and clang::CodeGen::CodeGenModule::getContext().
Referenced by appendRecordType().
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Definition at line 53 of file CodeGen/TargetInfo.cpp.
References clang::RecordType::getDecl(), clang::CodeGen::CGCXXABI::getRecordArgABI(), and clang::CodeGen::CGCXXABI::RAA_Default.
Referenced by getRecordArgABI().
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Definition at line 61 of file CodeGen/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 7065 of file CodeGen/TargetInfo.cpp.
References appendArrayType(), appendType(), clang::CLanguageLinkage, clang::Type::getAsArrayTypeUnsafe(), clang::FunctionDecl::getLanguageLinkage(), and clang::ValueDecl::getType().
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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 2493 of file CodeGen/TargetInfo.cpp.
References clang::Result.
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Definition at line 312 of file CodeGen/TargetInfo.cpp.
References clang::Type::getAs(), clang::ASTContext::getTypeSize(), clang::Type::hasPointerRepresentation(), clang::Type::isBlockPointerType(), and clang::Type::isEnumeralType().
Referenced by canExpandIndirectArgument().
Definition at line 46 of file CodeGen/TargetInfo.cpp.
References clang::CodeGen::CodeGenFunction::hasScalarEvaluationKind(), and clang::Type::isMemberFunctionPointerType().
Referenced by isSingleElementStruct().
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Definition at line 1205 of file CodeGen/TargetInfo.cpp.
References clang::CodeGen::ABIArgInfo::Direct, clang::CodeGen::ABIArgInfo::Expand, clang::CodeGen::ABIArgInfo::Extend, clang::CodeGen::ABIArgInfo::getIndirectByVal(), clang::CodeGen::ABIArgInfo::getInReg(), clang::CodeGen::ABIArgInfo::getKind(), clang::CodeGen::ABIArgInfo::Ignore, clang::CodeGen::ABIArgInfo::InAlloca, and clang::CodeGen::ABIArgInfo::Indirect.
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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 184 of file CodeGen/TargetInfo.cpp.
References clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::RecordType::getDecl(), clang::ValueDecl::getType(), 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 217 of file CodeGen/TargetInfo.cpp.
References clang::RecordDecl::fields(), clang::Type::getAs(), clang::RecordType::getDecl(), clang::RecordDecl::hasFlexibleArrayMember(), and isEmptyField().
Referenced by isEmptyField(), clang::ABIInfo::isHomogeneousAggregate(), and isSingleElementStruct().
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Definition at line 4772 of file CodeGen/TargetInfo.cpp.
References Context, 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 913 of file CodeGen/TargetInfo.cpp.
References clang::RecordDecl::fields(), clang::Type::getAs(), clang::RecordType::getDecl(), and isSSEVectorType().
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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 245 of file CodeGen/TargetInfo.cpp.
References Context, 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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Definition at line 909 of file CodeGen/TargetInfo.cpp.
References clang::Type::getAs(), and clang::ASTContext::getTypeSize().
Referenced by isRecordWithSSEVectorType().
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Definition at line 3873 of file CodeGen/TargetInfo.cpp.
References AssignToArrayRange(), clang::CodeGen::CodeGenFunction::Builder, and clang::CodeGen::CodeGenTypeCache::Int8Ty.
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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 698 of file CodeGen/TargetInfo.cpp.
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 71 of file CodeGen/TargetInfo.cpp.
References clang::RecordDecl::field_begin(), clang::RecordDecl::field_empty(), clang::Type::getAsUnionType(), and clang::Decl::hasAttr().