diff options
Diffstat (limited to 'clang/test')
| -rw-r--r-- | clang/test/CodeGenCXX/static-data-member-single-emission.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/static-data-member-single-emission.cpp b/clang/test/CodeGenCXX/static-data-member-single-emission.cpp new file mode 100644 index 00000000000..2b821a90b23 --- /dev/null +++ b/clang/test/CodeGenCXX/static-data-member-single-emission.cpp @@ -0,0 +1,30 @@ +// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s + +template <typename T> +struct HasStaticInit { +static const int index; +}; +int the_count = 0; +template <typename T> +const int HasStaticInit<T>::index = the_count++; + +template <typename T> int func_tmpl1() { return HasStaticInit<T>::index; } +template <typename T> int func_tmpl2() { return HasStaticInit<T>::index; } +template <typename T> int func_tmpl3() { return HasStaticInit<T>::index; } +void useit() { + func_tmpl1<int>(); + func_tmpl2<int>(); + func_tmpl3<int>(); +} + +// Throw in a final explicit instantiation to see that it doesn't screw things +// up. +template struct HasStaticInit<int>; + +// There should only be one entry, not 3. +// CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] + +// There should only be one update to @the_count. +// CHECK-NOT: store i32 %{{.*}}, i32* @the_count +// CHECK: store i32 %{{.*}}, i32* @the_count +// CHECK-NOT: store i32 %{{.*}}, i32* @the_count |
