forked from OSchip/llvm-project
128 lines
4.0 KiB
C++
128 lines
4.0 KiB
C++
// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s
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template < bool condition, typename T = void >
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struct enable_if { typedef T type; };
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template< typename T >
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struct enable_if< false, T > {};
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// PR5876
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namespace Casts {
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template< unsigned O >
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void implicit(typename enable_if< O <= 4 >::type* = 0) {
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}
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template< unsigned O >
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void cstyle(typename enable_if< O <= (unsigned)4 >::type* = 0) {
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}
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template< unsigned O >
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void functional(typename enable_if< O <= unsigned(4) >::type* = 0) {
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}
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template< unsigned O >
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void static_(typename enable_if< O <= static_cast<unsigned>(4) >::type* = 0) {
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}
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template< typename T >
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void auto_(decltype(new auto(T()))) {
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}
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// FIXME: Test const_cast, reinterpret_cast, dynamic_cast, which are
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// a bit harder to use in template arguments.
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template <unsigned N> struct T {};
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template <int N> T<N> f() { return T<N>(); }
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// CHECK: define weak_odr void @_ZN5Casts8implicitILj4EEEvPN9enable_ifIXleT_Li4EEvE4typeE
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template void implicit<4>(void*);
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// CHECK: define weak_odr void @_ZN5Casts6cstyleILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE
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template void cstyle<4>(void*);
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// CHECK: define weak_odr void @_ZN5Casts10functionalILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE
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template void functional<4>(void*);
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// CHECK: define weak_odr void @_ZN5Casts7static_ILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE
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template void static_<4>(void*);
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// CHECK: define weak_odr void @_ZN5Casts1fILi6EEENS_1TIXT_EEEv
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template T<6> f<6>();
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// CHECK: define weak_odr void @_ZN5Casts5auto_IiEEvDTnw_DapicvT__EEE(
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template void auto_<int>(int*);
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}
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namespace test1 {
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short foo(short);
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int foo(int);
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// CHECK: define linkonce_odr signext i16 @_ZN5test11aIsEEDTcl3foocvT__EEES1_(
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template <class T> auto a(T t) -> decltype(foo(T())) { return foo(t); }
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// CHECK: define linkonce_odr signext i16 @_ZN5test11bIsEEDTcp3foocvT__EEES1_(
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template <class T> auto b(T t) -> decltype((foo)(T())) { return (foo)(t); }
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void test(short s) {
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a(s);
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b(s);
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}
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}
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namespace test2 {
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template <class T> void a(T x, decltype(x()) y) {}
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template <class T> auto b(T x) -> decltype(x()) { return x(); }
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template <class T> void c(T x, void (*p)(decltype(x()))) {}
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template <class T> void d(T x, auto (*p)() -> decltype(x())) {}
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template <class T> void e(auto (*p)(T y) -> decltype(y())) {}
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template <class T> void f(void (*p)(T x, decltype(x()) y)) {}
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template <class T> void g(T x, decltype(x()) y) {
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static decltype(x()) variable;
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variable = 0;
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}
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template <class T> void h(T x, decltype((decltype(x())(*)()) 0) y) {}
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template <class T> void i(decltype((auto (*)(T x) -> decltype(x())) 0) y) {}
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float foo();
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void bar(float);
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float baz(float(*)());
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void fred(float(*)(), float);
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// CHECK: define void @_ZN5test211instantiateEv
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void instantiate() {
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// CHECK: call void @_ZN5test21aIPFfvEEEvT_DTclfL0p_EE(
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a(foo, 0.0f);
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// CHECK: call float @_ZN5test21bIPFfvEEEDTclfp_EET_(
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(void) b(foo);
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// CHECK: call void @_ZN5test21cIPFfvEEEvT_PFvDTclfL1p_EEE(
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c(foo, bar);
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// CHECK: call void @_ZN5test21dIPFfvEEEvT_PFDTclfL0p_EEvE(
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d(foo, foo);
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// CHECK: call void @_ZN5test21eIPFfvEEEvPFDTclfp_EET_E(
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e(baz);
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// CHECK: call void @_ZN5test21fIPFfvEEEvPFvT_DTclfL0p_EEE(
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f(fred);
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// CHECK: call void @_ZN5test21gIPFfvEEEvT_DTclfL0p_EE(
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g(foo, 0.0f);
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// CHECK: call void @_ZN5test21hIPFfvEEEvT_DTcvPFDTclfL0p_EEvELi0EE(
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h(foo, foo);
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// CHECK: call void @_ZN5test21iIPFfvEEEvDTcvPFDTclfp_EET_ELi0EE(
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i<float(*)()>(baz);
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}
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// CHECK: store float {{.*}}, float* @_ZZN5test21gIPFfvEEEvT_DTclfL0p_EEE8variable,
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}
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namespace test3 {
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template <class T, class U> void a(T x, U y, decltype(x.*y) z) {}
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struct X {
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int *member;
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};
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// CHECK: define void @_ZN5test311instantiateEv
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void instantiate() {
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X x;
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int *ip;
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// CHECK: call void @_ZN5test31aINS_1XEMS1_PiEEvT_T0_DTdsfL0p_fL0p0_E
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a(x, &X::member, ip);
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}
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}
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