clang/test/CodeGenCXX/attr-retain.cpp

   1 // RUN: %clang_cc1 -emit-llvm -triple x86_64 -Werror %s -o - | FileCheck %s
   2
   3 // CHECK:      @llvm.used = appending global [7 x ptr]
   4 // CHECK-SAME:   @_ZN2X0C2Ev
   5 // CHECK-SAME:   @_ZN2X0C1Ev
   6 // CHECK-SAME:   @_ZN2X0D2Ev
   7 // CHECK-SAME:   @_ZN2X0D1Ev
   8 // CHECK-SAME:   @_ZN2X16Nested2f1Ev
   9 // CHECK-SAME:   @_ZN10merge_declL4funcEv
  10 // CHECK-SAME:   @_ZN18instantiate_member1SIiE1fEv
  11
  12 struct X0 {
  13   // CHECK: define linkonce_odr{{.*}} @_ZN2X0C1Ev({{.*}}
  14   __attribute__((used, retain)) X0() {}
  15   // CHECK: define linkonce_odr{{.*}} @_ZN2X0D1Ev({{.*}}
  16   __attribute__((used, retain)) ~X0() {}
  17 };
  18
  19 struct X1 {
  20   struct Nested {
  21     // CHECK-NOT: 2f0Ev
  22     // CHECK: define linkonce_odr{{.*}} @_ZN2X16Nested2f1Ev({{.*}}
  23     void __attribute__((retain)) f0() {}
  24     void __attribute__((used, retain)) f1() {}
  25   };
  26 };
  27
  28 // CHECK: define internal void @_ZN10merge_declL4funcEv(){{.*}}
  29 namespace merge_decl {
  30 static void func();
  31 void bar() { void func() __attribute__((used, retain)); }
  32 static void func() {}
  33 } // namespace merge_decl
  34
  35 namespace instantiate_member {
  36 template <typename T>
  37 struct S {
  38   void __attribute__((used, retain)) f() {}
  39 };
  40
  41 void test() {
  42   // CHECK: define linkonce_odr{{.*}} void @_ZN18instantiate_member1SIiE1fEv({{.*}}
  43   S<int> a;
  44 }
  45 } // namespace instantiate_member