diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/clang/AST/DeclCXX.h | 29 | ||||
| -rw-r--r-- | include/clang/Sema/Sema.h | 17 |
2 files changed, 32 insertions, 14 deletions
diff --git a/include/clang/AST/DeclCXX.h b/include/clang/AST/DeclCXX.h index 0c6c2846c9..66212f72b7 100644 --- a/include/clang/AST/DeclCXX.h +++ b/include/clang/AST/DeclCXX.h @@ -389,9 +389,12 @@ class CXXRecordDecl : public RecordDecl { /// The number of explicit captures in this lambda. unsigned NumExplicitCaptures : 13; + /// Has known `internal` linkage. + unsigned HasKnownInternalLinkage : 1; + /// The number used to indicate this lambda expression for name /// mangling in the Itanium C++ ABI. - unsigned ManglingNumber = 0; + unsigned ManglingNumber : 31; /// The declaration that provides context for this lambda, if the /// actual DeclContext does not suffice. This is used for lambdas that @@ -406,12 +409,12 @@ class CXXRecordDecl : public RecordDecl { /// The type of the call method. TypeSourceInfo *MethodTyInfo; - LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, - bool Dependent, bool IsGeneric, - LambdaCaptureDefault CaptureDefault) - : DefinitionData(D), Dependent(Dependent), IsGenericLambda(IsGeneric), - CaptureDefault(CaptureDefault), NumCaptures(0), NumExplicitCaptures(0), - MethodTyInfo(Info) { + LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, bool Dependent, + bool IsGeneric, LambdaCaptureDefault CaptureDefault) + : DefinitionData(D), Dependent(Dependent), IsGenericLambda(IsGeneric), + CaptureDefault(CaptureDefault), NumCaptures(0), + NumExplicitCaptures(0), HasKnownInternalLinkage(0), ManglingNumber(0), + MethodTyInfo(Info) { IsLambda = true; // C++1z [expr.prim.lambda]p4: @@ -1705,6 +1708,13 @@ public: return getLambdaData().ManglingNumber; } + /// The lambda is known to has internal linkage no matter whether it has name + /// mangling number. + bool hasKnownLambdaInternalLinkage() const { + assert(isLambda() && "Not a lambda closure type!"); + return getLambdaData().HasKnownInternalLinkage; + } + /// Retrieve the declaration that provides additional context for a /// lambda, when the normal declaration context is not specific enough. /// @@ -1718,9 +1728,12 @@ public: /// Set the mangling number and context declaration for a lambda /// class. - void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl) { + void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl, + bool HasKnownInternalLinkage = false) { + assert(isLambda() && "Not a lambda closure type!"); getLambdaData().ManglingNumber = ManglingNumber; getLambdaData().ContextDecl = ContextDecl; + getLambdaData().HasKnownInternalLinkage = HasKnownInternalLinkage; } /// Returns the inheritance model used for this record. diff --git a/include/clang/Sema/Sema.h b/include/clang/Sema/Sema.h index 1e3d6b93d0..bf8e59d607 100644 --- a/include/clang/Sema/Sema.h +++ b/include/clang/Sema/Sema.h @@ -5926,12 +5926,17 @@ public: LambdaCaptureDefault CaptureDefault); /// Start the definition of a lambda expression. - CXXMethodDecl * - startLambdaDefinition(CXXRecordDecl *Class, SourceRange IntroducerRange, - TypeSourceInfo *MethodType, SourceLocation EndLoc, - ArrayRef<ParmVarDecl *> Params, - ConstexprSpecKind ConstexprKind, - Optional<std::pair<unsigned, Decl *>> Mangling = None); + CXXMethodDecl *startLambdaDefinition(CXXRecordDecl *Class, + SourceRange IntroducerRange, + TypeSourceInfo *MethodType, + SourceLocation EndLoc, + ArrayRef<ParmVarDecl *> Params, + ConstexprSpecKind ConstexprKind); + + /// Number lambda for linkage purposes if necessary. + void handleLambdaNumbering( + CXXRecordDecl *Class, CXXMethodDecl *Method, + Optional<std::tuple<unsigned, bool, Decl *>> Mangling = None); /// Endow the lambda scope info with the relevant properties. void buildLambdaScope(sema::LambdaScopeInfo *LSI, |