diff options
Diffstat (limited to 'contrib/llvm/tools/clang/lib/CodeGen/CGCXXABI.h')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/CodeGen/CGCXXABI.h | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CGCXXABI.h b/contrib/llvm/tools/clang/lib/CodeGen/CGCXXABI.h index d53fd4c..7b912e3 100644 --- a/contrib/llvm/tools/clang/lib/CodeGen/CGCXXABI.h +++ b/contrib/llvm/tools/clang/lib/CodeGen/CGCXXABI.h @@ -291,11 +291,26 @@ public: /// Emit constructor variants required by this ABI. virtual void EmitCXXConstructors(const CXXConstructorDecl *D) = 0; + /// Notes how many arguments were added to the beginning (Prefix) and ending + /// (Suffix) of an arg list. + /// + /// Note that Prefix actually refers to the number of args *after* the first + /// one: `this` arguments always come first. + struct AddedStructorArgs { + unsigned Prefix = 0; + unsigned Suffix = 0; + AddedStructorArgs() = default; + AddedStructorArgs(unsigned P, unsigned S) : Prefix(P), Suffix(S) {} + static AddedStructorArgs prefix(unsigned N) { return {N, 0}; } + static AddedStructorArgs suffix(unsigned N) { return {0, N}; } + }; + /// Build the signature of the given constructor or destructor variant by /// adding any required parameters. For convenience, ArgTys has been /// initialized with the type of 'this'. - virtual void buildStructorSignature(const CXXMethodDecl *MD, StructorType T, - SmallVectorImpl<CanQualType> &ArgTys) = 0; + virtual AddedStructorArgs + buildStructorSignature(const CXXMethodDecl *MD, StructorType T, + SmallVectorImpl<CanQualType> &ArgTys) = 0; /// Returns true if the given destructor type should be emitted as a linkonce /// delegating thunk, regardless of whether the dtor is defined in this TU or @@ -355,9 +370,9 @@ public: /// Add any ABI-specific implicit arguments needed to call a constructor. /// - /// \return The number of args added to the call, which is typically zero or - /// one. - virtual unsigned + /// \return The number of arguments added at the beginning and end of the + /// call, which is typically zero or one. + virtual AddedStructorArgs addImplicitConstructorArgs(CodeGenFunction &CGF, const CXXConstructorDecl *D, CXXCtorType Type, bool ForVirtualBase, bool Delegating, CallArgList &Args) = 0; @@ -377,7 +392,7 @@ public: isVirtualOffsetNeededForVTableField(CodeGenFunction &CGF, CodeGenFunction::VPtr Vptr) = 0; - /// Checks if ABI requires to initilize vptrs for given dynamic class. + /// Checks if ABI requires to initialize vptrs for given dynamic class. virtual bool doStructorsInitializeVPtrs(const CXXRecordDecl *VTableClass) = 0; /// Get the address point of the vtable for the given base subobject. |
