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d784e6893c
This doesn't quite get alias template equivalence right yet, but handles the egregious cases where we would silently give the wrong answers. llvm-svn: 248431
78 lines
3.2 KiB
C++
78 lines
3.2 KiB
C++
// RUN: %clang_cc1 -std=c++11 -emit-llvm -triple=x86_64-apple-darwin9 -o - %s | FileCheck %s
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template<unsigned I, typename ...Types>
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struct X { };
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template<typename T> struct identity { using type = T; };
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template<typename T> struct add_reference;
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template<typename ...Types> struct tuple { };
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template<int ...Values> struct int_tuple { };
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template<template<typename> class ...Templates> struct template_tuple { };
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template<typename ...T> using ArrayOfN = int[sizeof...(T)];
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// CHECK-LABEL: define weak_odr void @_Z2f0IJEEv1XIXsZT_EJDpRT_EE
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template<typename ...Types>
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void f0(X<sizeof...(Types), Types&...>) { }
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template void f0(X<0>);
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// CHECK-LABEL: define weak_odr void @_Z2f0IJifdEEv1XIXsZT_EJDpRT_EE
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template void f0<int, float, double>(X<3, int&, float&, double&>);
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// Mangling for template argument packs
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template<typename ...Types> void f1() {}
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// CHECK-LABEL: define weak_odr void @_Z2f1IJEEvv
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template void f1<>();
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// CHECK-LABEL: define weak_odr void @_Z2f1IJiEEvv
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template void f1<int>();
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// CHECK-LABEL: define weak_odr void @_Z2f1IJifEEvv
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template void f1<int, float>();
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// Mangling function parameter packs
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template<typename ...Types> void f2(Types...) {}
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// CHECK-LABEL: define weak_odr void @_Z2f2IJEEvDpT_
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template void f2<>();
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// CHECK-LABEL: define weak_odr void @_Z2f2IJiEEvDpT_
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template void f2<int>(int);
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// CHECK-LABEL: define weak_odr void @_Z2f2IJifEEvDpT_
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template void f2<int, float>(int, float);
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// Mangling non-trivial function parameter packs
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template<typename ...Types> void f3(const Types *...) {}
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// CHECK-LABEL: define weak_odr void @_Z2f3IJEEvDpPKT_
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template void f3<>();
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// CHECK-LABEL: define weak_odr void @_Z2f3IJiEEvDpPKT_
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template void f3<int>(const int*);
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// CHECK-LABEL: define weak_odr void @_Z2f3IJifEEvDpPKT_
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template void f3<int, float>(const int*, const float*);
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// Mangling of type pack expansions in a template argument
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template<typename ...Types> tuple<Types...> f4() {}
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// CHECK-LABEL: define weak_odr void @_Z2f4IJifdEE5tupleIJDpT_EEv
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template tuple<int, float, double> f4();
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// Mangling of type pack expansions in a function type
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template<typename R, typename ...ArgTypes> identity<R(ArgTypes...)> f5() {}
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// CHECK-LABEL: define weak_odr void @_Z2f5IiJifdEE8identityIFT_DpT0_EEv
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template identity<int(int, float, double)> f5();
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// Mangling of non-type template argument expansions
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template<int ...Values> int_tuple<Values...> f6() {}
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// CHECK-LABEL: define weak_odr void @_Z2f6IJLi1ELi2ELi3EEE9int_tupleIJXspT_EEEv
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template int_tuple<1, 2, 3> f6();
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// Mangling of template template argument expansions
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template<template<typename> class ...Templates>
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template_tuple<Templates...> f7() {}
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// CHECK-LABEL: define weak_odr void @_Z2f7IJ8identity13add_referenceEE14template_tupleIJDpT_EEv
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template template_tuple<identity, add_reference> f7();
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template<typename T, typename ...U> void f8(ArrayOfN<int, U..., T, typename U::type...>&) {}
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// CHECK-LABEL: define weak_odr void @_Z2f8IiJ8identityIiES0_IfEEEvRAsPiDpT0_T_DpNS3_4typeEE_i
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template void f8<int, identity<int>, identity<float>>(int (&)[6]);
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template<typename ...T> void f10(ArrayOfN<T...> &) {}
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// FIXME: This is wrong; should be @_Z3f10IJifEEvRAsZT__i
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// CHECK-LABEL: define weak_odr void @_Z3f10IJifEEvRAsPDpT_E_i
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template void f10<int, float>(int (&)[2]);
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