clang/test/CodeGenCXX/attr-used-member-function-implicit-instantiation.cpp

   1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
   2
   3 // Check that PR17480 is fixed: __attribute__((used)) ignored in templated
   4 // classes
   5 namespace InstantiateUsedMemberDefinition {
   6 template <typename T>
   7 struct S {
   8   int __attribute__((used)) f() {
   9     return 0;
  10   }
  11 };
  12
  13 void test() {
  14   // Check that InstantiateUsedMemberDefinition::S<int>::f() is defined
  15   // as a result of the S class template implicit instantiation
  16   // CHECK: define linkonce_odr noundef i32 @_ZN31InstantiateUsedMemberDefinition1SIiE1fEv
  17   S<int> inst;
  18 }
  19 } // namespace InstantiateUsedMemberDefinition