1 // RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s 2 3 template <typename T> 4 struct HasStaticInit { 5 static const int index; 6 }; 7 extern "C" 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 32
