1 | // RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s |
2 | |
3 | namespace std { |
4 | typedef decltype(sizeof(int)) size_t; |
5 | |
6 | // libc++'s implementation |
7 | template <class _E> |
8 | class initializer_list |
9 | { |
10 | const _E* __begin_; |
11 | size_t __size_; |
12 | |
13 | initializer_list(const _E* __b, size_t __s) |
14 | : __begin_(__b), |
15 | __size_(__s) |
16 | {} |
17 | |
18 | public: |
19 | typedef _E value_type; |
20 | typedef const _E& reference; |
21 | typedef const _E& const_reference; |
22 | typedef size_t size_type; |
23 | |
24 | typedef const _E* iterator; |
25 | typedef const _E* const_iterator; |
26 | |
27 | initializer_list() : __begin_(nullptr), __size_(0) {} |
28 | |
29 | size_t size() const {return __size_;} |
30 | const _E* begin() const {return __begin_;} |
31 | const _E* end() const {return __begin_ + __size_;} |
32 | }; |
33 | } |
34 | |
35 | template < bool condition, typename T = void > |
36 | struct enable_if { typedef T type; }; |
37 | |
38 | template< typename T > |
39 | struct enable_if< false, T > {}; |
40 | |
41 | // PR5876 |
42 | namespace Casts { |
43 | template< unsigned O > |
44 | void implicit(typename enable_if< O <= 4 >::type* = 0) { |
45 | } |
46 | |
47 | template< unsigned O > |
48 | void cstyle(typename enable_if< O <= (unsigned)4 >::type* = 0) { |
49 | } |
50 | |
51 | template< unsigned O > |
52 | void functional(typename enable_if< O <= unsigned(4) >::type* = 0) { |
53 | } |
54 | |
55 | template< unsigned O > |
56 | void static_(typename enable_if< O <= static_cast<unsigned>(4) >::type* = 0) { |
57 | } |
58 | |
59 | template <unsigned O, typename T> |
60 | void reinterpret_(typename enable_if<O <= sizeof(reinterpret_cast<T *>(0))>::type * = 0) { |
61 | } |
62 | |
63 | template <typename T, T *p> |
64 | void const_(typename enable_if<0 <= sizeof(const_cast<T *>(p))>::type * = 0) { |
65 | } |
66 | |
67 | template <typename T, T *p> |
68 | void dynamic_(typename enable_if<0 <= sizeof(dynamic_cast<T *>(p))>::type * = 0) { |
69 | } |
70 | |
71 | template< typename T > |
72 | void auto_(decltype(new auto(T()))) { |
73 | } |
74 | |
75 | template< typename T > |
76 | void scalar_(decltype(T(), int())) { |
77 | } |
78 | |
79 | template <unsigned N> struct T {}; |
80 | |
81 | template <int N> T<N> f() { return T<N>(); } |
82 | |
83 | extern int i; |
84 | extern struct S {} s; |
85 | |
86 | // CHECK-LABEL: define weak_odr void @_ZN5Casts8implicitILj4EEEvPN9enable_ifIXleT_Li4EEvE4typeE |
87 | template void implicit<4>(void*); |
88 | // CHECK-LABEL: define weak_odr void @_ZN5Casts6cstyleILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE |
89 | template void cstyle<4>(void*); |
90 | // CHECK-LABEL: define weak_odr void @_ZN5Casts10functionalILj4EEEvPN9enable_ifIXleT_cvjLi4EEvE4typeE |
91 | template void functional<4>(void*); |
92 | // CHECK-LABEL: define weak_odr void @_ZN5Casts7static_ILj4EEEvPN9enable_ifIXleT_scjLi4EEvE4typeE |
93 | template void static_<4>(void*); |
94 | // CHECK-LABEL: define weak_odr void @_ZN5Casts12reinterpret_ILj4EiEEvPN9enable_ifIXleT_szrcPT0_Li0EEvE4typeE |
95 | template void reinterpret_<4, int>(void*); |
96 | // CHECK-LABEL: define weak_odr void @_ZN5Casts6const_IiXadL_ZNS_1iEEEEEvPN9enable_ifIXleLi0EszccPT_T0_EvE4typeE |
97 | template void const_<int, &i>(void*); |
98 | // CHECK-LABEL: define weak_odr void @_ZN5Casts8dynamic_INS_1SEXadL_ZNS_1sEEEEEvPN9enable_ifIXleLi0EszdcPT_T0_EvE4typeE |
99 | template void dynamic_<struct S, &s>(void*); |
100 | |
101 | // CHECK-LABEL: define weak_odr void @_ZN5Casts1fILi6EEENS_1TIXT_EEEv |
102 | template T<6> f<6>(); |
103 | |
104 | // CHECK-LABEL: define weak_odr void @_ZN5Casts5auto_IiEEvDTnw_DapicvT__EEE( |
105 | template void auto_<int>(int*); |
106 | |
107 | // CHECK-LABEL: define weak_odr void @_ZN5Casts7scalar_IiEEvDTcmcvT__Ecvi_EE( |
108 | template void scalar_<int>(int); |
109 | } |
110 | |
111 | namespace test1 { |
112 | short foo(short); |
113 | int foo(int); |
114 | |
115 | // CHECK-LABEL: define linkonce_odr signext i16 @_ZN5test11aIsEEDTcl3foocvT__EEES1_( |
116 | template <class T> auto a(T t) -> decltype(foo(T())) { return foo(t); } |
117 | |
118 | // CHECK-LABEL: define linkonce_odr signext i16 @_ZN5test11bIsEEDTcp3foocvT__EEES1_( |
119 | template <class T> auto b(T t) -> decltype((foo)(T())) { return (foo)(t); } |
120 | |
121 | void test(short s) { |
122 | a(s); |
123 | b(s); |
124 | } |
125 | } |
126 | |
127 | namespace test2 { |
128 | template <class T> void a(T x, decltype(x()) y) {} |
129 | template <class T> auto b(T x) -> decltype(x()) { return x(); } |
130 | template <class T> void c(T x, void (*p)(decltype(x()))) {} |
131 | template <class T> void d(T x, auto (*p)() -> decltype(x())) {} |
132 | template <class T> void e(auto (*p)(T y) -> decltype(y())) {} |
133 | template <class T> void f(void (*p)(T x, decltype(x()) y)) {} |
134 | template <class T> void g(T x, decltype(x()) y) { |
135 | static decltype(x()) variable; |
136 | variable = 0; |
137 | } |
138 | template <class T> void h(T x, decltype((decltype(x())(*)()) 0) y) {} |
139 | template <class T> void i(decltype((auto (*)(T x) -> decltype(x())) 0) y) {} |
140 | |
141 | float foo(); |
142 | void bar(float); |
143 | float baz(float(*)()); |
144 | void fred(float(*)(), float); |
145 | |
146 | // CHECK-LABEL: define void @_ZN5test211instantiateEv |
147 | void instantiate() { |
148 | // CHECK: call void @_ZN5test21aIPFfvEEEvT_DTclfL0p_EE( |
149 | a(foo, 0.0f); |
150 | // CHECK: call float @_ZN5test21bIPFfvEEEDTclfp_EET_( |
151 | (void) b(foo); |
152 | // CHECK: call void @_ZN5test21cIPFfvEEEvT_PFvDTclfL1p_EEE( |
153 | c(foo, bar); |
154 | // CHECK: call void @_ZN5test21dIPFfvEEEvT_PFDTclfL0p_EEvE( |
155 | d(foo, foo); |
156 | // CHECK: call void @_ZN5test21eIPFfvEEEvPFDTclfp_EET_E( |
157 | e(baz); |
158 | // CHECK: call void @_ZN5test21fIPFfvEEEvPFvT_DTclfL0p_EEE( |
159 | f(fred); |
160 | // CHECK: call void @_ZN5test21gIPFfvEEEvT_DTclfL0p_EE( |
161 | g(foo, 0.0f); |
162 | // CHECK: call void @_ZN5test21hIPFfvEEEvT_DTcvPFDTclfL0p_EEvELi0EE( |
163 | h(foo, foo); |
164 | // CHECK: call void @_ZN5test21iIPFfvEEEvDTcvPFDTclfp_EET_ELi0EE( |
165 | i<float(*)()>(baz); |
166 | } |
167 | |
168 | // CHECK: store float {{.*}}, float* @_ZZN5test21gIPFfvEEEvT_DTclfL0p_EEE8variable, |
169 | } |
170 | |
171 | namespace test3 { |
172 | template <class T, class U> void a(T x, U y, decltype(x.*y) z) {} |
173 | |
174 | struct X { |
175 | int *member; |
176 | }; |
177 | |
178 | // CHECK-LABEL: define void @_ZN5test311instantiateEv |
179 | void instantiate() { |
180 | X x; |
181 | int *ip; |
182 | // CHECK: call void @_ZN5test31aINS_1XEMS1_PiEEvT_T0_DTdsfL0p_fL0p0_E |
183 | a(x, &X::member, ip); |
184 | } |
185 | } |
186 | |
187 | namespace test4 { |
188 | struct X { |
189 | X(int); |
190 | }; |
191 | |
192 | template <typename T> |
193 | void tf1(decltype(new T(1)) p) |
194 | {} |
195 | |
196 | template <typename T> |
197 | void tf2(decltype(new T({1})) p) |
198 | {} |
199 | |
200 | template <typename T> |
201 | void tf3(decltype(new T{1}) p) |
202 | {} |
203 | |
204 | // CHECK: void @_ZN5test43tf1INS_1XEEEvDTnw_T_piLi1EEE |
205 | template void tf1<X>(X*); |
206 | |
207 | // CHECK: void @_ZN5test43tf2INS_1XEEEvDTnw_T_piilLi1EEEE |
208 | template void tf2<X>(X*); |
209 | |
210 | // CHECK: void @_ZN5test43tf3INS_1XEEEvDTnw_T_ilLi1EEE |
211 | template void tf3<X>(X*); |
212 | |
213 | } |
214 | |
215 | namespace test5 { |
216 | template <typename T> void a(decltype(noexcept(T()))) {} |
217 | template void a<int>(decltype(noexcept(int()))); |
218 | // CHECK: void @_ZN5test51aIiEEvDTnxcvT__EE( |
219 | } |
220 | |
221 | namespace test6 { |
222 | struct X { |
223 | int i; |
224 | }; |
225 | |
226 | struct Y { |
227 | union { |
228 | int i; |
229 | }; |
230 | }; |
231 | |
232 | struct Z { |
233 | union { |
234 | X ua; |
235 | Y ub; |
236 | }; |
237 | |
238 | struct { |
239 | X s; |
240 | }; |
241 | |
242 | union { |
243 | union { |
244 | struct { |
245 | struct { |
246 | X uuss; |
247 | }; |
248 | }; |
249 | }; |
250 | }; |
251 | }; |
252 | |
253 | Z z, *zp; |
254 | |
255 | template<typename T> |
256 | void f1(decltype(T(z.ua.i))) {} |
257 | template void f1<int>(int); |
258 | // CHECK-LABEL: define weak_odr void @_ZN5test62f1IiEEvDTcvT_dtdtL_ZNS_1zEE2ua1iE |
259 | |
260 | template<typename T> |
261 | void f2(decltype(T(z.ub.i))) {} |
262 | template void f2<int>(int); |
263 | // CHECK-LABEL: define weak_odr void @_ZN5test62f2IiEEvDTcvT_dtdtL_ZNS_1zEE2ub1iE |
264 | |
265 | template<typename T> |
266 | void f3(decltype(T(z.s.i))) {} |
267 | template void f3<int>(int); |
268 | // CHECK-LABEL: define weak_odr void @_ZN5test62f3IiEEvDTcvT_dtdtL_ZNS_1zEE1s1iE |
269 | |
270 | template<typename T> |
271 | void f4(decltype(T(z.uuss.i))) {} |
272 | template void f4<int>(int); |
273 | // CHECK-LABEL: define weak_odr void @_ZN5test62f4IiEEvDTcvT_dtdtL_ZNS_1zEE4uuss1iE |
274 | |
275 | template<typename T> |
276 | void f5(decltype(T(zp->ua.i))) {} |
277 | template void f5<int>(int); |
278 | // CHECK-LABEL: define weak_odr void @_ZN5test62f5IiEEvDTcvT_dtptL_ZNS_2zpEE2ua1iE |
279 | |
280 | template<typename T> |
281 | void f6(decltype(T(zp->ub.i))) {} |
282 | template void f6<int>(int); |
283 | // CHECK-LABEL: define weak_odr void @_ZN5test62f6IiEEvDTcvT_dtptL_ZNS_2zpEE2ub1iE |
284 | |
285 | template<typename T> |
286 | void f7(decltype(T(zp->s.i))) {} |
287 | template void f7<int>(int); |
288 | // CHECK-LABEL: define weak_odr void @_ZN5test62f7IiEEvDTcvT_dtptL_ZNS_2zpEE1s1iE |
289 | |
290 | template<typename T> |
291 | void f8(decltype(T(zp->uuss.i))) {} |
292 | template void f8<int>(int); |
293 | // CHECK-LABEL: define weak_odr void @_ZN5test62f8IiEEvDTcvT_dtptL_ZNS_2zpEE4uuss1iE |
294 | } |
295 | |
296 | namespace test7 { |
297 | struct A { int x[3]; }; |
298 | struct B { B(int, int); } extern b; |
299 | struct C { C(B); }; |
300 | struct D { D(C); }; |
301 | struct E { E(std::initializer_list<int>); }; |
302 | struct F { F(E); }; |
303 | |
304 | template<class T> decltype(A{1,2},T()) fA1(T t) {} |
305 | template<class T> decltype(A({1,2}),T()) fA2(T t) {} |
306 | template<class T> decltype(B{1,2},T()) fB1(T t) {} |
307 | template<class T> decltype(B({1,2}),T()) fB2(T t) {} |
308 | template<class T> decltype(C{{1,2}},T()) fC1(T t) {} |
309 | template<class T> decltype(C({1,2}),T()) fC2(T t) {} |
310 | template<class T> decltype(D{b},T()) fD1(T t) {} |
311 | template<class T> decltype(D(b),T()) fD2(T t) {} |
312 | template<class T> decltype(E{1,2},T()) fE1(T t) {} |
313 | template<class T> decltype(E({1,2}),T()) fE2(T t) {} |
314 | template<class T> decltype(F{{1,2}},T()) fF1(T t) {} |
315 | template<class T> decltype(F({1,2}),T()) fF2(T t) {} |
316 | |
317 | template<class T> decltype(T{}) fT1(T t) {} |
318 | template<class T> decltype(T()) fT2(T t) {} |
319 | template<class T> decltype(T{1}) fT3(T t) {} |
320 | template<class T> decltype(T(1)) fT4(T t) {} |
321 | template<class T> decltype(T{1,2}) fT5(T t) {} |
322 | template<class T> decltype(T(1,2)) fT6(T t) {} |
323 | template<class T> decltype(T{{}}) fT7(T t) {} |
324 | template<class T> decltype(T({})) fT8(T t) {} |
325 | template<class T> decltype(T{{1}}) fT9(T t) {} |
326 | template<class T> decltype(T({1})) fTA(T t) {} |
327 | template<class T> decltype(T{{1,2}}) fTB(T t) {} |
328 | template<class T> decltype(T({1,2})) fTC(T t) {} |
329 | |
330 | int main() { |
331 | fA1(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fA1IiEEDTcmtlNS_1AELi1ELi2EEcvT__EES2_ |
332 | fA2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fA2IiEEDTcmcvNS_1AEilLi1ELi2EEcvT__EES2_ |
333 | fB1(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fB1IiEEDTcmtlNS_1BELi1ELi2EEcvT__EES2_ |
334 | fB2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fB2IiEEDTcmcvNS_1BEilLi1ELi2EEcvT__EES2_ |
335 | fC1(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fC1IiEEDTcmtlNS_1CEilLi1ELi2EEEcvT__EES2_ |
336 | fC2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fC2IiEEDTcmcvNS_1CEilLi1ELi2EEcvT__EES2_ |
337 | fD1(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fD1IiEEDTcmtlNS_1DEL_ZNS_1bEEEcvT__EES2_ |
338 | fD2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fD2IiEEDTcmcvNS_1DEL_ZNS_1bEEcvT__EES2_ |
339 | fE1(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fE1IiEEDTcmtlNS_1EELi1ELi2EEcvT__EES2_ |
340 | fE2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fE2IiEEDTcmcvNS_1EEilLi1ELi2EEcvT__EES2_ |
341 | fF1(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fF1IiEEDTcmtlNS_1FEilLi1ELi2EEEcvT__EES2_ |
342 | fF2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fF2IiEEDTcmcvNS_1FEilLi1ELi2EEcvT__EES2_ |
343 | fT1(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fT1IiEEDTtlT_EES1_( |
344 | fT2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fT2IiEEDTcvT__EES1_( |
345 | fT3(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fT3IiEEDTtlT_Li1EEES1_( |
346 | fT4(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fT4IiEEDTcvT_Li1EES1_( |
347 | fT5(b); // CHECK-LABEL: define {{.*}} @_ZN5test73fT5INS_1BEEEDTtlT_Li1ELi2EEES2_( |
348 | fT6(b); // CHECK-LABEL: define {{.*}} @_ZN5test73fT6INS_1BEEEDTcvT__Li1ELi2EEES2_( |
349 | fT7(A{}); // CHECK-LABEL: define {{.*}} @_ZN5test73fT7INS_1AEEEDTtlT_ilEEES2_( |
350 | fT8(A{}); // CHECK-LABEL: define {{.*}} @_ZN5test73fT8INS_1AEEEDTcvT_ilEES2_( |
351 | fT9(A{}); // CHECK-LABEL: define {{.*}} @_ZN5test73fT9INS_1AEEEDTtlT_ilLi1EEEES2_( |
352 | fTA(A{}); // CHECK-LABEL: define {{.*}} @_ZN5test73fTAINS_1AEEEDTcvT_ilLi1EEES2_( |
353 | fTB<C>(b); // CHECK-LABEL: define {{.*}} @_ZN5test73fTBINS_1CEEEDTtlT_ilLi1ELi2EEEES2_( |
354 | fTC<C>(b); // CHECK-LABEL: define {{.*}} @_ZN5test73fTCINS_1CEEEDTcvT_ilLi1ELi2EEES2_( |
355 | } |
356 | } |
357 | |
358 | |
359 | namespace test8 { |
360 | template <class> |
361 | struct X { |
362 | template<typename T> T foo() const { return 0; } |
363 | template <class T> auto bar() const -> decltype(foo<T>()) { return 0; } |
364 | }; |
365 | |
366 | // CHECK-LABEL: define weak_odr i32 @_ZNK5test81XIiE3barIiEEDTcl3fooIT_EEEv |
367 | template int X<int>::bar<int>() const; |
368 | } |
369 | |
370 | namespace designated_init { |
371 | struct A { struct B { int b[5][5]; } a; }; |
372 | // CHECK-LABEL: define {{.*}} @_ZN15designated_init1fINS_1AEEEvDTtlT_di1adi1bdxLi3EdXLi1ELi4ELi9EEE( |
373 | template<typename T> void f(decltype(T{.a.b[3][1 ... 4] = 9}) x) {} |
374 | void use_f(A a) { f<A>(a); } |
375 | } |
376 | |