| 1 | // RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s |
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| 2 | |
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| 3 | template <typename T> |
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| 4 | struct HasStaticInit { |
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| 5 | static const int index; |
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| 6 | }; |
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| 7 | extern "C" |
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| 8 | int the_count = 0; |
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| 9 | template <typename T> |
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| 10 | const int HasStaticInit<T>::index = the_count++; |
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| 11 | |
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| 12 | template <typename T> int func_tmpl1() { return HasStaticInit<T>::index; } |
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| 13 | template <typename T> int func_tmpl2() { return HasStaticInit<T>::index; } |
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| 14 | template <typename T> int func_tmpl3() { return HasStaticInit<T>::index; } |
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| 15 | void useit() { |
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| 16 | func_tmpl1<int>(); |
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| 17 | func_tmpl2<int>(); |
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| 18 | func_tmpl3<int>(); |
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| 19 | } |
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| 20 | |
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| 21 | // Throw in a final explicit instantiation to see that it doesn't screw things |
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| 22 | // up. |
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| 23 | template struct HasStaticInit<int>; |
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| 24 | |
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| 25 | // There should only be one entry, not 3. |
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| 26 | // CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] |
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| 27 | |
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| 28 | // There should only be one update to @the_count. |
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| 29 | // CHECK-NOT: store i32 %{{.*}}, i32* @the_count |
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| 30 | // CHECK: store i32 %{{.*}}, i32* @the_count |
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| 31 | // CHECK-NOT: store i32 %{{.*}}, i32* @the_count |
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| 32 | |
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