Teach IR generation to return 'this' from constructors and destructors
under the ARM ABI.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112588 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index 94378b7..fbea420 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -410,3 +410,29 @@
// Fake answer.
return true;
}
+
+void CGCXXABI::BuildThisParam(CodeGenFunction &CGF, FunctionArgList &Params) {
+ const CXXMethodDecl *MD = cast<CXXMethodDecl>(CGF.CurGD.getDecl());
+
+ // FIXME: I'm not entirely sure I like using a fake decl just for code
+ // generation. Maybe we can come up with a better way?
+ ImplicitParamDecl *ThisDecl
+ = ImplicitParamDecl::Create(CGM.getContext(), 0, MD->getLocation(),
+ &CGM.getContext().Idents.get("this"),
+ MD->getThisType(CGM.getContext()));
+ Params.push_back(std::make_pair(ThisDecl, ThisDecl->getType()));
+ getThisDecl(CGF) = ThisDecl;
+}
+
+void CGCXXABI::EmitThisParam(CodeGenFunction &CGF) {
+ /// Initialize the 'this' slot.
+ assert(getThisDecl(CGF) && "no 'this' variable for function");
+ getThisValue(CGF)
+ = CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(getThisDecl(CGF)),
+ "this");
+}
+
+void CGCXXABI::EmitReturnFromThunk(CodeGenFunction &CGF,
+ RValue RV, QualType ResultType) {
+ CGF.EmitReturnOfRValue(RV, ResultType);
+}