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      1 // RUN: %clang_cc1 %s -triple x86_64-unknown-linux-gnu -emit-llvm -w -o - | FileCheck %s
      2 
      3 struct S {
      4   enum { FOO = 42 };
      5   enum { BAR = 42 };
      6 };
      7 
      8 template <typename T> struct X {
      9   T value;
     10   X(T t) : value(t) {}
     11   int f() { return value; }
     12 };
     13 
     14 template <typename T> int f(T t) {
     15   X<T> x(t);
     16   return x.f();
     17 }
     18 
     19 void test() {
     20   // Look for two instantiations, one for FOO's
     21   // type and one for BAR's.
     22   // CHECK: define linkonce_odr i32 @_Z1fIN1SUt_EEiT_(i32 %t)
     23   (void)f(S::FOO);
     24   // CHECK: define linkonce_odr i32 @_Z1fIN1SUt0_EEiT_(i32 %t)
     25   (void)f(S::BAR);
     26 
     27   // Now check for the class template instantiations. Annoyingly, they are in
     28   // reverse order.
     29   //
     30   // BAR's instantiation of X:
     31   // CHECK: define linkonce_odr i32 @_ZN1XIN1SUt0_EE1fEv(%struct.X* %this)
     32   // CHECK: define linkonce_odr void @_ZN1XIN1SUt0_EEC2ES1_(%struct.X* %this, i32 %t) unnamed_addr
     33   //
     34   // FOO's instantiation of X:
     35   // CHECK: define linkonce_odr i32 @_ZN1XIN1SUt_EE1fEv(%struct.X.0* %this)
     36   // CHECK: define linkonce_odr void @_ZN1XIN1SUt_EEC2ES1_(%struct.X.0* %this, i32 %t) unnamed_addr
     37 }
     38