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      1 // RUN: %clang_cc1 %s -std=c++1y -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
      2 // CHECK: ; ModuleID
      3 
      4 extern "C" int foo();
      5 
      6 template<typename T> struct A { static int a; };
      7 template<typename T> int A<T>::a = foo();
      8 
      9 // CHECK-NOT: @_ZN1AIcE1aE
     10 template<> int A<char>::a;
     11 
     12 // CHECK: @_ZN1AIbE1aE = global i32 10
     13 template<> int A<bool>::a = 10;
     14 
     15 // CHECK: @llvm.global_ctors = appending global [7 x { i32, void ()*, i8* }]
     16 // CHECK: [{ i32, void ()*, i8* } { i32 65535, void ()* @[[unordered1:[^,]*]], i8* bitcast (i32* @_ZN1AIsE1aE to i8*) },
     17 // CHECK:  { i32, void ()*, i8* } { i32 65535, void ()* @[[unordered2:[^,]*]], i8* bitcast (i16* @_Z1xIsE to i8*) },
     18 // CHECK:  { i32, void ()*, i8* } { i32 65535, void ()* @[[unordered3:[^,]*]], i8* bitcast (i32* @_ZN2ns1aIiE1iE to i8*) },
     19 // CHECK:  { i32, void ()*, i8* } { i32 65535, void ()* @[[unordered4:[^,]*]], i8* bitcast (i32* @_ZN2ns1b1iIiEE to i8*) },
     20 // CHECK:  { i32, void ()*, i8* } { i32 65535, void ()* @[[unordered5:[^,]*]], i8* bitcast (i32* @_ZN1AIvE1aE to i8*) },
     21 // CHECK:  { i32, void ()*, i8* } { i32 65535, void ()* @[[unordered6:[^,]*]], i8* @_Z1xIcE },
     22 // CHECK:  { i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_static_member_variable_explicit_specialization.cpp, i8* null }]
     23 
     24 template int A<short>::a;  // Unordered
     25 int b = foo();
     26 int c = foo();
     27 int d = A<void>::a; // Unordered
     28 
     29 // An explicit specialization is ordered, and goes in __GLOBAL_sub_I_static_member_variable_explicit_specialization.cpp.
     30 template<> struct A<int> { static int a; };
     31 int A<int>::a = foo();
     32 
     33 template<typename T> struct S { static T x; static T y; };
     34 template<> int S<int>::x = foo();
     35 template<> int S<int>::y = S<int>::x;
     36 
     37 template<typename T> T x = foo();
     38 template short x<short>;  // Unordered
     39 template<> int x<int> = foo();
     40 int e = x<char>; // Unordered
     41 
     42 namespace ns {
     43 template <typename T> struct a {
     44   static int i;
     45 };
     46 template<typename T> int a<T>::i = foo();
     47 template struct a<int>;
     48 
     49 struct b {
     50   template <typename T> static T i;
     51 };
     52 template<typename T> T b::i = foo();
     53 template int b::i<int>;
     54 }
     55 // CHECK: define internal void @[[unordered1]]
     56 // CHECK: call i32 @foo()
     57 // CHECK: store {{.*}} @_ZN1AIsE1aE
     58 // CHECK: ret
     59 
     60 // CHECK: define internal void @[[unordered2]]
     61 // CHECK: call i32 @foo()
     62 // CHECK: store {{.*}} @_Z1xIsE
     63 // CHECK: ret
     64 
     65 // CHECK: define internal void @[[unordered3]]
     66 // CHECK: call i32 @foo()
     67 // CHECK: store {{.*}} @_ZN2ns1aIiE1iE
     68 // CHECK: ret
     69 
     70 // CHECK: define internal void @[[unordered4]]
     71 // CHECK: call i32 @foo()
     72 // CHECK: store {{.*}} @_ZN2ns1b1iIiEE
     73 // CHECK: ret
     74 
     75 // CHECK: define internal void @[[unordered5]]
     76 // CHECK: call i32 @foo()
     77 // CHECK: store {{.*}} @_ZN1AIvE1aE
     78 // CHECK: ret
     79 
     80 // CHECK: define internal void @[[unordered6]]
     81 // CHECK: call i32 @foo()
     82 // CHECK: store {{.*}} @_Z1xIcE
     83 // CHECK: ret
     84 
     85 // CHECK: define internal void @_GLOBAL__sub_I_static_member_variable_explicit_specialization.cpp()
     86 //   We call unique stubs for every ordered dynamic initializer in the TU.
     87 // CHECK: call
     88 // CHECK: call
     89 // CHECK: call
     90 // CHECK: call
     91 // CHECK: call
     92 // CHECK: call
     93 // CHECK: call
     94 // CHECK: call
     95 // CHECK-NOT: call
     96 // CHECK: ret
     97