1 // RUN: %clang_cc1 %s -triple=i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s 2 3 int f(); 4 5 // CHECK: $"\01?x@selectany_init@@3HA" = comdat any 6 // CHECK: $"\01?x@?$A@H@explicit_template_instantiation@@2HB" = comdat any 7 // CHECK: $"\01?x@?$A@H@implicit_template_instantiation@@2HB" = comdat any 8 9 namespace simple_init { 10 #pragma init_seg(compiler) 11 int x = f(); 12 // CHECK: @"\01?x@simple_init@@3HA" = global i32 0, align 4 13 // CHECK: @__cxx_init_fn_ptr = private constant void ()* @"\01??__Ex@simple_init@@YAXXZ", section ".CRT$XCC" 14 15 #pragma init_seg(lib) 16 int y = f(); 17 // CHECK: @"\01?y@simple_init@@3HA" = global i32 0, align 4 18 // CHECK: @__cxx_init_fn_ptr1 = private constant void ()* @"\01??__Ey@simple_init@@YAXXZ", section ".CRT$XCL" 19 20 #pragma init_seg(user) 21 int z = f(); 22 // CHECK: @"\01?z@simple_init@@3HA" = global i32 0, align 4 23 // No function pointer! This one goes on @llvm.global_ctors. 24 } 25 26 #pragma init_seg(".asdf") 27 28 namespace internal_init { 29 namespace { 30 int x = f(); 31 // CHECK: @"\01?x@?A@internal_init@@3HA" = internal global i32 0, align 4 32 // CHECK: @__cxx_init_fn_ptr2 = private constant void ()* @"\01??__Ex@?A@internal_init@@YAXXZ", section ".asdf" 33 } 34 } 35 36 namespace selectany_init { 37 int __declspec(selectany) x = f(); 38 // CHECK: @"\01?x@selectany_init@@3HA" = weak_odr global i32 0, comdat, align 4 39 // CHECK: @__cxx_init_fn_ptr3 = private constant void ()* @"\01??__Ex@selectany_init@@YAXXZ", section ".asdf", comdat($"\01?x@selectany_init@@3HA") 40 } 41 42 namespace explicit_template_instantiation { 43 template <typename T> struct A { static const int x; }; 44 template <typename T> const int A<T>::x = f(); 45 template struct A<int>; 46 // CHECK: @"\01?x@?$A@H@explicit_template_instantiation@@2HB" = weak_odr global i32 0, comdat, align 4 47 // CHECK: @__cxx_init_fn_ptr4 = private constant void ()* @"\01??__Ex@?$A@H@explicit_template_instantiation@@2HB@YAXXZ", section ".asdf", comdat($"\01?x@?$A@H@explicit_template_instantiation@@2HB") 48 } 49 50 namespace implicit_template_instantiation { 51 template <typename T> struct A { static const int x; }; 52 template <typename T> const int A<T>::x = f(); 53 int g() { return A<int>::x; } 54 // CHECK: @"\01?x@?$A@H@implicit_template_instantiation@@2HB" = linkonce_odr global i32 0, comdat, align 4 55 // CHECK: @__cxx_init_fn_ptr5 = private constant void ()* @"\01??__Ex@?$A@H@implicit_template_instantiation@@2HB@YAXXZ", section ".asdf", comdat($"\01?x@?$A@H@implicit_template_instantiation@@2HB") 56 } 57 58 // ... and here's where we emitted user level ctors. 59 // CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] 60 // CHECK: [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_pragma_init_seg.cpp, i8* null }] 61 62 // We have to mark everything used so we can survive globalopt, even through 63 // LTO. There's no way LLVM could really understand if data in the .asdf 64 // section is really used or dead. 65 // 66 // CHECK: @llvm.used = appending global [6 x i8*] 67 // CHECK: [i8* bitcast (void ()** @__cxx_init_fn_ptr to i8*), 68 // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr1 to i8*), 69 // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr2 to i8*), 70 // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr3 to i8*), 71 // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr4 to i8*), 72 // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr5 to i8*)], section "llvm.metadata" 73