| Reid Kleckner | 620d0ce | 2015-04-11 01:25:36 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s |
| 2 | |
| 3 | template <typename T> |
| 4 | struct HasStaticInit { |
| 5 | static const int index; |
| 6 | }; |
| NAKAMURA Takumi | 7b24b05 | 2015-04-11 14:57:11 +0000 | [diff] [blame] | 7 | extern "C" |
| Reid Kleckner | 620d0ce | 2015-04-11 01:25:36 +0000 | [diff] [blame] | 8 | int the_count = 0; |
| 9 | template <typename T> |
| 10 | const int HasStaticInit<T>::index = the_count++; |
| 11 | |
| 12 | template <typename T> int func_tmpl1() { return HasStaticInit<T>::index; } |
| 13 | template <typename T> int func_tmpl2() { return HasStaticInit<T>::index; } |
| 14 | template <typename T> int func_tmpl3() { return HasStaticInit<T>::index; } |
| 15 | void useit() { |
| 16 | func_tmpl1<int>(); |
| 17 | func_tmpl2<int>(); |
| 18 | func_tmpl3<int>(); |
| 19 | } |
| 20 | |
| 21 | // Throw in a final explicit instantiation to see that it doesn't screw things |
| 22 | // up. |
| 23 | template struct HasStaticInit<int>; |
| 24 | |
| 25 | // There should only be one entry, not 3. |
| 26 | // CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] |
| 27 | |
| 28 | // There should only be one update to @the_count. |
| 29 | // CHECK-NOT: store i32 %{{.*}}, i32* @the_count |
| 30 | // CHECK: store i32 %{{.*}}, i32* @the_count |
| 31 | // CHECK-NOT: store i32 %{{.*}}, i32* @the_count |