Sema.cpp File Reference

#include "UsedDeclVisitor.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTDiagnostic.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclFriend.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/PrettyDeclStackTrace.h"
#include "clang/AST/StmtCXX.h"
#include "clang/AST/TypeOrdering.h"
#include "clang/Basic/DarwinSDKInfo.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/PartialDiagnostic.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/Stack.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/HeaderSearchOptions.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Sema/CXXFieldCollector.h"
#include "clang/Sema/DelayedDiagnostic.h"
#include "clang/Sema/EnterExpressionEvaluationContext.h"
#include "clang/Sema/ExternalSemaSource.h"
#include "clang/Sema/Initialization.h"
#include "clang/Sema/MultiplexExternalSemaSource.h"
#include "clang/Sema/ObjCMethodList.h"
#include "clang/Sema/RISCVIntrinsicManager.h"
#include "clang/Sema/Scope.h"
#include "clang/Sema/ScopeInfo.h"
#include "clang/Sema/SemaAMDGPU.h"
#include "clang/Sema/SemaARM.h"
#include "clang/Sema/SemaAVR.h"
#include "clang/Sema/SemaBPF.h"
#include "clang/Sema/SemaCUDA.h"
#include "clang/Sema/SemaCodeCompletion.h"
#include "clang/Sema/SemaConsumer.h"
#include "clang/Sema/SemaHLSL.h"
#include "clang/Sema/SemaHexagon.h"
#include "clang/Sema/SemaInternal.h"
#include "clang/Sema/SemaLoongArch.h"
#include "clang/Sema/SemaM68k.h"
#include "clang/Sema/SemaMIPS.h"
#include "clang/Sema/SemaMSP430.h"
#include "clang/Sema/SemaNVPTX.h"
#include "clang/Sema/SemaObjC.h"
#include "clang/Sema/SemaOpenACC.h"
#include "clang/Sema/SemaOpenCL.h"
#include "clang/Sema/SemaOpenMP.h"
#include "clang/Sema/SemaPPC.h"
#include "clang/Sema/SemaPseudoObject.h"
#include "clang/Sema/SemaRISCV.h"
#include "clang/Sema/SemaSYCL.h"
#include "clang/Sema/SemaSwift.h"
#include "clang/Sema/SemaSystemZ.h"
#include "clang/Sema/SemaWasm.h"
#include "clang/Sema/SemaX86.h"
#include "clang/Sema/TemplateDeduction.h"
#include "clang/Sema/TemplateInstCallback.h"
#include "clang/Sema/TypoCorrection.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/Support/TimeProfiler.h"
#include <optional>
#include "clang/Basic/OpenCLExtensionTypes.def"
#include "clang/Basic/AArch64SVEACLETypes.def"
#include "clang/Basic/PPCTypes.def"
#include "clang/Basic/RISCVVTypes.def"
#include "clang/Basic/WebAssemblyReferenceTypes.def"
#include "clang/Basic/AMDGPUTypes.def"

Go to the source code of this file.

Classes
class	clang::sema::SemaPPCallbacks

Namespaces
namespace	clang
	The JSON file list parser is used to communicate input to InstallAPI.
namespace	clang::sema

Macros
#define	EXT_OPAQUE_TYPE(ExtType, Id, Ext)
#define	SVE_TYPE(Name, Id, SingletonId)    addImplicitTypedef(Name, Context.SingletonId);
#define	PPC_VECTOR_MMA_TYPE(Name, Id, Size)    addImplicitTypedef(#Name, Context.Id##Ty);
#define	PPC_VECTOR_VSX_TYPE(Name, Id, Size)    addImplicitTypedef(#Name, Context.Id##Ty);
#define	RVV_TYPE(Name, Id, SingletonId)    addImplicitTypedef(Name, Context.SingletonId);
#define	WASM_TYPE(Name, Id, SingletonId)    addImplicitTypedef(Name, Context.SingletonId);
#define	AMDGPU_TYPE(Name, Id, SingletonId)    addImplicitTypedef(Name, Context.SingletonId);

Typedefs
typedef llvm::DenseMap< const CXXRecordDecl *, bool >	RecordCompleteMap

Functions
static bool	ShouldRemoveFromUnused (Sema *SemaRef, const DeclaratorDecl *D)
	Used to prune the decls of Sema's UnusedFileScopedDecls vector.
static bool	isFunctionOrVarDeclExternC (const NamedDecl *ND)
static void	checkUndefinedButUsed (Sema &S)
	checkUndefinedButUsed - Check for undefined objects with internal linkage or that are inline.
static bool	MethodsAndNestedClassesComplete (const CXXRecordDecl *RD, RecordCompleteMap &MNCComplete)
	Returns true, if all methods and nested classes of the given CXXRecordDecl are defined in this translation unit.
static bool	IsRecordFullyDefined (const CXXRecordDecl *RD, RecordCompleteMap &RecordsComplete, RecordCompleteMap &MNCComplete)
	Returns true, if the given CXXRecordDecl is fully defined in this translation unit, i.e.
static void	emitCallStackNotes (Sema &S, const FunctionDecl *FD)
static void	checkEscapingByref (VarDecl *VD, Sema &S)
static void	markEscapingByrefs (const FunctionScopeInfo &FSI, Sema &S)
static void	noteOverloads (Sema &S, const UnresolvedSetImpl &Overloads, const SourceLocation FinalNoteLoc)
	Give notes for a set of overloads.
static void	notePlausibleOverloads (Sema &S, SourceLocation Loc, const UnresolvedSetImpl &Overloads, bool(*IsPlausibleResult)(QualType))
static bool	IsCallableWithAppend (const Expr *E)
	Determine whether the given expression can be called by just putting parentheses after it.
static bool	IsCPUDispatchCPUSpecificMultiVersion (const Expr *E)

Macro Definition Documentation

AMDGPU_TYPE

#define AMDGPU_TYPE	(		Name,
			Id,
			SingletonId
	)		addImplicitTypedef(Name, Context.SingletonId);

EXT_OPAQUE_TYPE

#define EXT_OPAQUE_TYPE	(		ExtType,
			Id,
			Ext
	)

Value:

  if (getOpenCLOptions().isSupported(#Ext, getLangOpts())) {                   \
    addImplicitTypedef(#ExtType, Context.Id##Ty);                              \
  }

PPC_VECTOR_MMA_TYPE

#define PPC_VECTOR_MMA_TYPE	(		Name,
			Id,
			Size
	)		addImplicitTypedef(#Name, Context.Id##Ty);

PPC_VECTOR_VSX_TYPE

#define PPC_VECTOR_VSX_TYPE	(		Name,
			Id,
			Size
	)		addImplicitTypedef(#Name, Context.Id##Ty);

RVV_TYPE

#define RVV_TYPE	(		Name,
			Id,
			SingletonId
	)		addImplicitTypedef(Name, Context.SingletonId);

SVE_TYPE

#define SVE_TYPE	(		Name,
			Id,
			SingletonId
	)		addImplicitTypedef(Name, Context.SingletonId);

WASM_TYPE

#define WASM_TYPE	(		Name,
			Id,
			SingletonId
	)		addImplicitTypedef(Name, Context.SingletonId);

Typedef Documentation

RecordCompleteMap

typedef llvm::DenseMap<const CXXRecordDecl*, bool> RecordCompleteMap

Definition at line 1008 of file Sema.cpp.

Function Documentation

checkEscapingByref()

static void checkEscapingByref ( VarDecl *  VD, Sema &  S  )

static

Definition at line 2223 of file Sema.cpp.

References clang::Sema::canThrow(), clang::Sema::Context, clang::ImplicitCastExpr::Create(), E, clang::Type::getAsCXXRecordDecl(), clang::Sema::getLangOpts(), clang::Decl::getLocation(), clang::ValueDecl::getType(), clang::Init, clang::InitializedEntity::InitializeBlock(), Loc, clang::Sema::MaybeCreateExprWithCleanups(), clang::Sema::NamedReturnInfo::MoveEligible, clang::Sema::PerformCopyInitialization(), clang::Sema::PerformMoveOrCopyInitialization(), clang::Sema::PotentiallyEvaluated, clang::Sema::ResolveExceptionSpec(), clang::Result, clang::ASTContext::setBlockVarCopyInit(), clang::T, clang::VK_LValue, and clang::VK_XValue.

Referenced by markEscapingByrefs().

checkUndefinedButUsed()

static void checkUndefinedButUsed ( Sema &  S )

static

checkUndefinedButUsed - Check for undefined objects with internal linkage or that are inline.

Definition at line 935 of file Sema.cpp.

References clang::SemaBase::Diag(), clang::Func, clang::Decl::getAttr(), clang::Sema::getLangOpts(), clang::Type::getLinkage(), clang::Decl::getLocation(), clang::ValueDecl::getType(), clang::Sema::getUndefinedButUsed(), clang::NamedDecl::isExternallyVisible(), clang::isExternallyVisible(), clang::Sema::isExternalWithNoLinkageType(), clang::SourceLocation::isValid(), and clang::Sema::UndefinedButUsed.

Referenced by clang::Sema::ActOnEndOfTranslationUnit().

emitCallStackNotes()

static void emitCallStackNotes ( Sema &  S, const FunctionDecl *  FD  )

static

Definition at line 1708 of file Sema.cpp.

References clang::Sema::CUDA(), clang::SemaCUDA::DeviceKnownEmittedFns, clang::Sema::Diags, clang::DiagnosticsEngine::hasFatalErrorOccurred(), and clang::DiagnosticsEngine::Report().

IsCallableWithAppend()

static bool IsCallableWithAppend ( const Expr *  E )

static

Determine whether the given expression can be called by just putting parentheses after it.

Notably, expressions with unary operators can't be because the unary operator will start parsing outside the call.

Definition at line 2650 of file Sema.cpp.

References E, and clang::Expr::IgnoreImplicit().

Referenced by clang::Sema::tryToRecoverWithCall().

IsCPUDispatchCPUSpecificMultiVersion()

static bool IsCPUDispatchCPUSpecificMultiVersion ( const Expr *  E )

static

Definition at line 2658 of file Sema.cpp.

References E, clang::FunctionDecl::isCPUDispatchMultiVersion(), and clang::FunctionDecl::isCPUSpecificMultiVersion().

Referenced by clang::Sema::tryToRecoverWithCall().

isFunctionOrVarDeclExternC()

static bool isFunctionOrVarDeclExternC ( const NamedDecl *  ND )

static

Definition at line 863 of file Sema.cpp.

Referenced by clang::Sema::isExternalWithNoLinkageType().

IsRecordFullyDefined()

static bool IsRecordFullyDefined ( const CXXRecordDecl *  RD, RecordCompleteMap &  RecordsComplete, RecordCompleteMap &  MNCComplete  )

static

Returns true, if the given CXXRecordDecl is fully defined in this translation unit, i.e.

all methods are defined or pure virtual and all friends, friend functions and nested classes are fully defined in this translation unit.

Should only be called from ActOnEndOfTranslationUnit so that all definitions are actually read.

Definition at line 1057 of file Sema.cpp.

References clang::Complete, E, clang::CXXRecordDecl::friend_begin(), clang::CXXRecordDecl::friend_end(), and MethodsAndNestedClassesComplete().

Referenced by clang::Sema::ActOnEndOfTranslationUnit().

markEscapingByrefs()

static void markEscapingByrefs ( const FunctionScopeInfo &  FSI, Sema &  S  )

static

Definition at line 2257 of file Sema.cpp.

References clang::sema::FunctionScopeInfo::Blocks, clang::sema::FunctionScopeInfo::ByrefBlockVars, clang::BlockDecl::captures(), checkEscapingByref(), clang::Sema::checkNonTrivialCUnion(), clang::BlockDecl::doesNotEscape(), clang::BlockDecl::getCaretLocation(), clang::ValueDecl::getType(), clang::Decl::hasAttr(), clang::QualType::hasNonTrivialToPrimitiveCopyCUnion(), clang::QualType::hasNonTrivialToPrimitiveDestructCUnion(), clang::VarDecl::isEscapingByref(), clang::Type::isStructureOrClassType(), clang::Sema::NTCUC_BlockCapture, clang::Sema::NTCUK_Copy, clang::Sema::NTCUK_Destruct, and clang::VarDecl::setEscapingByref().

Referenced by clang::Sema::PopFunctionScopeInfo().

MethodsAndNestedClassesComplete()

static bool MethodsAndNestedClassesComplete ( const CXXRecordDecl *  RD, RecordCompleteMap &  MNCComplete  )

static

Returns true, if all methods and nested classes of the given CXXRecordDecl are defined in this translation unit.

Should only be called from ActOnEndOfTranslationUnit so that all definitions are actually read.

Definition at line 1015 of file Sema.cpp.

References clang::Complete, clang::DeclContext::decls_begin(), clang::DeclContext::decls_end(), E, clang::TagDecl::isCompleteDefinition(), and MethodsAndNestedClassesComplete().

Referenced by IsRecordFullyDefined(), and MethodsAndNestedClassesComplete().

noteOverloads()

static void noteOverloads ( Sema &  S, const UnresolvedSetImpl &  Overloads, const SourceLocation  FinalNoteLoc  )

static

Give notes for a set of overloads.

A companion to tryExprAsCall. In cases when the name that the programmer wrote was an overloaded function, we may be able to make some guesses about plausible overloads based on their return types; such guesses can be handed off to this method to be emitted as notes.

Parameters

Overloads	- The overloads to note.
FinalNoteLoc	- If we've suppressed printing some overloads due to -fshow-overloads=best, this is the location to attach to the note about too many candidates. Typically this will be the location of the original ill-formed expression.

Definition at line 2597 of file Sema.cpp.

References clang::UnresolvedSetImpl::begin(), clang::SemaBase::Diag(), clang::Sema::Diags, clang::UnresolvedSetImpl::end(), clang::Decl::getAttr(), clang::DiagnosticsEngine::getNumOverloadCandidatesToShow(), clang::Decl::hasAttr(), clang::FunctionDecl::isMultiVersion(), and clang::DiagnosticsEngine::overloadCandidatesShown().

Referenced by notePlausibleOverloads().

notePlausibleOverloads()

static void notePlausibleOverloads ( Sema &  S, SourceLocation  Loc, const UnresolvedSetImpl &  Overloads, bool(*)(QualType)  IsPlausibleResult  )

static

Definition at line 2629 of file Sema.cpp.

References clang::UnresolvedSetImpl::addDecl(), clang::UnresolvedSetImpl::begin(), clang::UnresolvedSetImpl::end(), Loc, and noteOverloads().

Referenced by clang::Sema::tryToRecoverWithCall().

ShouldRemoveFromUnused()

static bool ShouldRemoveFromUnused ( Sema *  SemaRef, const DeclaratorDecl *  D  )

static

Used to prune the decls of Sema's UnusedFileScopedDecls vector.

Definition at line 802 of file Sema.cpp.

References clang::Sema::Context, D, clang::VarDecl::getDefinition(), clang::Decl::getMostRecentDecl(), clang::Redeclarable< decl_type >::getMostRecentDecl(), clang::Decl::isUsed(), ShouldRemoveFromUnused(), and clang::Sema::ShouldWarnIfUnusedFileScopedDecl().

Referenced by clang::Sema::ActOnEndOfTranslationUnit(), and ShouldRemoveFromUnused().