text: // Cross comdat example
  // Parent VTable is in a comdat section.
  
  // RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -S -o - -emit-llvm -fexperimental-relative-c++-abi-vtables | FileCheck %s
  
  // A::foo() has a comdat since it is an inline function
  // CHECK: $_ZN1A3fooEv = comdat any
  // CHECK: $_ZN1A3fooEv.stub = comdat any
  // CHECK: $_ZTV1A = comdat any
  // CHECK: $_ZTS1A = comdat any
  
  // The VTable for A has its own comdat section bc it has no key function
  // CHECK: $_ZTI1A = comdat any
  // CHECK: $_ZTI1A.rtti_proxy = comdat any
  
  // The VTable for A is emitted here and in a comdat section since it has no key function, and is used in this module when creating an instance of A.
  // CHECK: @_ZTV1A.local = linkonce_odr hidden unnamed_addr constant { [3 x i32] } { [3 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8* }** @_ZTI1A.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.A*)* @_ZN1A3fooEv.stub to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, comdat($_ZTV1A), align 4
  // CHECK: @_ZTVN10__cxxabiv117__class_type_infoE = external global i8*
  // CHECK: @_ZTS1A = linkonce_odr constant [3 x i8] c"1A\00", comdat, align 1
  // CHECK: @_ZTI1A = linkonce_odr constant { i8*, i8* } { i8* getelementptr inbounds (i8, i8* bitcast (i8** @_ZTVN10__cxxabiv117__class_type_infoE to i8*), i32 8), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1A, i32 0, i32 0) }, comdat, align 8
  // CHECK: @_ZTI1A.rtti_proxy = hidden unnamed_addr constant { i8*, i8* }* @_ZTI1A, comdat
  // CHECK: @_ZTV1A = linkonce_odr unnamed_addr alias { [3 x i32] }, { [3 x i32] }* @_ZTV1A.local
  
  // CHECK:      define linkonce_odr void @_ZN1A3fooEv(%class.A* %this) unnamed_addr #{{[0-9]+}} comdat
  
  // CHECK:      define hidden void @_ZN1A3fooEv.stub(%class.A* %0) unnamed_addr #{{[0-9]+}} comdat {
  // CHECK-NEXT: entry:
  // CHECK-NEXT:   tail call void @_ZN1A3fooEv(%class.A* %0)
  // CHECK-NEXT:   ret void
  // CHECK-NEXT: }
  
  class A {
  public:
    inline virtual void foo() {}
  };
  class B : public A {
  public:
    void foo() override;
  };
  void A_foo(A *a);
  
  void A_foo(A *a) { a->foo(); }
  
  // func() is only used to emit a vtable.
  void func() {
    A a;
    A_foo(&a);
  }
  