More synthesis of copy constructors. Work in progress.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78402 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index d849336..cb6a6f8 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -652,6 +652,53 @@
return vtable;
}
+/// EmitCopyCtorBody - This routine implicitly defines body of a copy
+/// constructor, in accordance with section 12.8 (p7 and p8) of C++03
+/// The implicitly-defined copy constructor for class X performs a memberwise
+/// copy of its subobjects. The order of copying is the same as the order
+/// of initialization of bases and members in a user-defined constructor
+/// Each subobject is copied in the manner appropriate to its type:
+/// if the subobject is of class type, the copy constructor for the class is
+/// used;
+/// if the subobject is an array, each element is copied, in the manner
+/// appropriate to the element type;
+/// if the subobject is of scalar type, the built-in assignment operator is
+/// used.
+/// Virtual base class subobjects shall be copied only once by the
+/// implicitly-defined copy constructor
+
+void CodeGenFunction::EmitCopyCtorBody(const CXXConstructorDecl *CD) {
+ const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext());
+ assert(!ClassDecl->hasUserDeclaredCopyConstructor() &&
+ "EmitCopyCtorBody - copy constructor has definition already");
+
+ for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin();
+ Base != ClassDecl->bases_end(); ++Base) {
+ // FIXME. copy constrution of virtual base NYI
+ if (Base->isVirtual())
+ continue;
+#if 0
+ unsigned TypeQuals;
+ CXXRecordDecl *BaseClassDecl
+ = cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
+ if (CXXConstructorDecl *BaseCopyCtor =
+ BaseClassDecl->getCopyConstructor(getContext(), TypeQuals)) {
+
+ llvm::Value *LoadOfThis = LoadCXXThis();
+ llvm::Value *V = AddressCXXOfBaseClass(LoadOfThis, ClassDecl,
+ BaseClassDecl);
+ EmitCXXConstructorCall(BaseCopyCtor,
+ Ctor_Complete, V,
+ Member->const_arg_begin(),
+ Member->const_arg_end());
+
+ }
+#endif
+ }
+
+}
+
+
/// EmitCtorPrologue - This routine generates necessary code to initialize
/// base classes and non-static data members belonging to this constructor.
void CodeGenFunction::EmitCtorPrologue(const CXXConstructorDecl *CD) {