1 // RUN: %clang_cc1 -std=c++11 -emit-llvm -triple=x86_64-apple-darwin9 -o - %s | FileCheck %s
2
3 template<unsigned I, typename ...Types>
4 struct X { };
5
6 template<typename T> struct identity { };
7 template<typename T> struct add_reference;
8 template<typename ...Types> struct tuple { };
9 template<int ...Values> struct int_tuple { };
10 template<template<typename> class ...Templates> struct template_tuple { };
11
12 // CHECK-LABEL: define weak_odr void @_Z2f0IJEEv1XIXsZT_EJDpRT_EE
13 template<typename ...Types>
f0(X<sizeof...(Types),Types &...>)14 void f0(X<sizeof...(Types), Types&...>) { }
15
16 template void f0(X<0>);
17
18 // CHECK-LABEL: define weak_odr void @_Z2f0IJifdEEv1XIXsZT_EJDpRT_EE
19 template void f0<int, float, double>(X<3, int&, float&, double&>);
20
21 // Mangling for template argument packs
f1()22 template<typename ...Types> void f1() {}
23 // CHECK-LABEL: define weak_odr void @_Z2f1IJEEvv
24 template void f1<>();
25 // CHECK-LABEL: define weak_odr void @_Z2f1IJiEEvv
26 template void f1<int>();
27 // CHECK-LABEL: define weak_odr void @_Z2f1IJifEEvv
28 template void f1<int, float>();
29
30 // Mangling function parameter packs
f2(Types...)31 template<typename ...Types> void f2(Types...) {}
32 // CHECK-LABEL: define weak_odr void @_Z2f2IJEEvDpT_
33 template void f2<>();
34 // CHECK-LABEL: define weak_odr void @_Z2f2IJiEEvDpT_
35 template void f2<int>(int);
36 // CHECK-LABEL: define weak_odr void @_Z2f2IJifEEvDpT_
37 template void f2<int, float>(int, float);
38
39 // Mangling non-trivial function parameter packs
f3(const Types * ...)40 template<typename ...Types> void f3(const Types *...) {}
41 // CHECK-LABEL: define weak_odr void @_Z2f3IJEEvDpPKT_
42 template void f3<>();
43 // CHECK-LABEL: define weak_odr void @_Z2f3IJiEEvDpPKT_
44 template void f3<int>(const int*);
45 // CHECK-LABEL: define weak_odr void @_Z2f3IJifEEvDpPKT_
46 template void f3<int, float>(const int*, const float*);
47
48 // Mangling of type pack expansions in a template argument
f4()49 template<typename ...Types> tuple<Types...> f4() {}
50 // CHECK-LABEL: define weak_odr void @_Z2f4IJifdEE5tupleIJDpT_EEv
51 template tuple<int, float, double> f4();
52
53 // Mangling of type pack expansions in a function type
f5()54 template<typename R, typename ...ArgTypes> identity<R(ArgTypes...)> f5() {}
55 // CHECK-LABEL: define weak_odr void @_Z2f5IiJifdEE8identityIFT_DpT0_EEv
56 template identity<int(int, float, double)> f5();
57
58 // Mangling of non-type template argument expansions
f6()59 template<int ...Values> int_tuple<Values...> f6() {}
60 // CHECK-LABEL: define weak_odr void @_Z2f6IJLi1ELi2ELi3EEE9int_tupleIJXspT_EEEv
61 template int_tuple<1, 2, 3> f6();
62
63 // Mangling of template template argument expansions
64 template<template<typename> class ...Templates>
f7()65 template_tuple<Templates...> f7() {}
66 // CHECK-LABEL: define weak_odr void @_Z2f7IJ8identity13add_referenceEE14template_tupleIJDpT_EEv
67 template template_tuple<identity, add_reference> f7();
68