clang/test/CodeGenCXX/RelativeVTablesABI/inlined-key-function.cpp

   1 // Inline comdat method definition example.
   2 // The VTable is in a comdat and defined anywhere the inline definition is.
   3
   4 // RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -S -o - -emit-llvm | FileCheck %s
   5
   6 // CHECK: $_ZTV1A = comdat any
   7 // CHECK: $_ZTS1A = comdat any
   8 // CHECK: $_ZTI1A = comdat any
   9 // CHECK: $_ZTI1A.rtti_proxy = comdat any
  10
  11 // The VTable is linkonce_odr and in a comdat here bc it’s key function is inline defined.
  12 // CHECK: @_ZTV1A.local = linkonce_odr hidden unnamed_addr constant { [3 x i32] } { [3 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1A.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, comdat($_ZTV1A), align 4
  13 // CHECK: @_ZTV1A = linkonce_odr unnamed_addr alias { [3 x i32] }, ptr @_ZTV1A.local
  14
  15 class A {
  16 public:
  17   virtual void foo();
  18 };
  19 void A_foo(A *a);
  20
  21 inline void A::foo() {}
  22
  23 void func() {
  24   A a;
  25   A_foo(&a);
  26 }