When doing a derived-to-base class through a virtual class, we don't have to get the vbase offset from the vtable if the derived class is marked final.

llvm-svn: 124523

1 files changed, 16 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/derived-to-virtual-base-class-calls-final.cpp b/clang/test/CodeGenCXX/derived-to-virtual-base-class-calls-final.cpp
new file mode 100644
index 00000000000..e332f402000
--- /dev/null
+++ b/clang/test/CodeGenCXX/derived-to-virtual-base-class-calls-final.cpp
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
+
+struct A { int i; };
+struct B { int j; };
+struct C : A, B { int k; };
+
+struct D final : virtual C { 
+  D(); 
+  virtual void f();
+};
+
+// CHECK: define %struct.B* @_Z1fR1D
+B &f(D &d) {
+  // CHECK-NOT: load i8**
+  return d;
+}