clang/test/CodeGenCXX/debug-info-class-optzns.cpp

   1 // RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited %s -O1 -fno-experimental-new-pass-manager -o - | FileCheck %s
   2
   3 // Ensure class definitions are not emitted to debug info just because the
   4 // vtable is emitted for optimization purposes (as available_externally). The
   5 // class definition debug info should only go where the vtable is actually
   6 // emitted into the object file.
   7
   8 // CHECK: @_ZTV3foo = available_externally
   9
  10 // Verify that this doesn't involve querying for the vtable of types that aren't
  11 // dynamic (that would cause an assertion in the case below)
  12
  13 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "bar<int>"
  14 template <typename> struct bar {};
  15 extern template struct bar<int>;
  16 bar<int> *p1;
  17 bar<int> a;
  18
  19 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
  20 // CHECK-SAME: DIFlagFwdDecl
  21
  22 struct foo {
  23   virtual void f();
  24 };
  25
  26 foo f;