clang/test/CodeGenCXX/attr-used.cpp

   1 // RUN: %clang_cc1 -emit-llvm -triple %itanium_abi_triple -o - %s | FileCheck %s
   2
   3 // <rdar://problem/8684363>: clang++ not respecting __attribute__((used)) on destructors
   4 struct X0 {
   5   // CHECK-DAG: define linkonce_odr {{.*}} @_ZN2X0C1Ev
   6   __attribute__((used)) X0() {}
   7   // CHECK-DAG: define linkonce_odr {{.*}} @_ZN2X0D1Ev
   8   __attribute__((used)) ~X0() {}
   9 };
  10
  11 // PR19743: not emitting __attribute__((used)) inline methods in nested classes.
  12 struct X1 {
  13   struct Nested {
  14     // CHECK-DAG: define linkonce_odr {{.*}} @_ZN2X16Nested1fEv
  15     void __attribute__((used)) f() {}
  16   };
  17 };
  18
  19 struct X2 {
  20   // We must delay emission of bar() until foo() has had its body parsed,
  21   // otherwise foo() would not be emitted.
  22   void __attribute__((used)) bar() { foo(); }
  23   void foo() { }
  24
  25   // CHECK-DAG: define linkonce_odr {{.*}} @_ZN2X23barEv
  26   // CHECK-DAG: define linkonce_odr {{.*}} @_ZN2X23fooEv
  27 };