71 lines · cpp
1// RUN: %clang_cc1 %s -triple=i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s2 3int f();4 5// CHECK: $"?x@selectany_init@@3HA" = comdat any6// CHECK: $"?x@?$A@H@explicit_template_instantiation@@2HB" = comdat any7// CHECK: $"?x@?$A@H@implicit_template_instantiation@@2HB" = comdat any8 9namespace simple_init {10#pragma init_seg(compiler)11int x = f();12// CHECK: @"?x@simple_init@@3HA" = dso_local global i32 0, align 413// No function pointer! This one goes on @llvm.global_ctors.14 15#pragma init_seg(lib)16int y = f();17// CHECK: @"?y@simple_init@@3HA" = dso_local global i32 0, align 418// No function pointer! This one goes on @llvm.global_ctors.19 20#pragma init_seg(user)21int z = f();22// CHECK: @"?z@simple_init@@3HA" = dso_local global i32 0, align 423// No function pointer! This one goes on @llvm.global_ctors.24}25 26#pragma init_seg(".asdf")27 28namespace internal_init {29namespace {30int x = f();31// CHECK: @"?x@?A0x{{[^@]*}}@internal_init@@3HA" = internal global i32 0, align 432// CHECK: @__cxx_init_fn_ptr = private constant ptr @"??__Ex@?A0x{{[^@]*}}@internal_init@@YAXXZ", section ".asdf"33}34}35 36namespace selectany_init {37int __declspec(selectany) x = f();38// CHECK: @"?x@selectany_init@@3HA" = weak_odr dso_local global i32 0, comdat, align 439// CHECK: @__cxx_init_fn_ptr.1 = private constant ptr @"??__Ex@selectany_init@@YAXXZ", section ".asdf", comdat($"?x@selectany_init@@3HA")40}41 42namespace explicit_template_instantiation {43template <typename T> struct A { static const int x; };44template <typename T> const int A<T>::x = f();45template struct A<int>;46// CHECK: @"?x@?$A@H@explicit_template_instantiation@@2HB" = weak_odr dso_local global i32 0, comdat, align 447// CHECK: @__cxx_init_fn_ptr.2 = private constant ptr @"??__E?x@?$A@H@explicit_template_instantiation@@2HB@@YAXXZ", section ".asdf", comdat($"?x@?$A@H@explicit_template_instantiation@@2HB")48}49 50namespace implicit_template_instantiation {51template <typename T> struct A { static const int x; };52template <typename T> const int A<T>::x = f();53int g() { return A<int>::x; }54// CHECK: @"?x@?$A@H@implicit_template_instantiation@@2HB" = linkonce_odr dso_local global i32 0, comdat, align 455// CHECK: @__cxx_init_fn_ptr.3 = private constant ptr @"??__E?x@?$A@H@implicit_template_instantiation@@2HB@@YAXXZ", section ".asdf", comdat($"?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 [3 x { i32, ptr, ptr }]60// CHECK: [{ i32, ptr, ptr } { i32 200, ptr @"??__Ex@simple_init@@YAXXZ", ptr @"?x@simple_init@@3HA" }, { i32, ptr, ptr } { i32 400, ptr @"??__Ey@simple_init@@YAXXZ", ptr @"?y@simple_init@@3HA" }, { i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__sub_I_pragma_init_seg.cpp, ptr null }]61 62// We have to mark everything used so we can survive globalopt, even through63// LTO. There's no way LLVM could really understand if data in the .asdf64// section is really used or dead.65//66// CHECK: @llvm.used = appending global [4 x ptr]67// CHECK: [ptr @__cxx_init_fn_ptr,68// CHECK: ptr @__cxx_init_fn_ptr.1,69// CHECK: ptr @__cxx_init_fn_ptr.2,70// CHECK: ptr @__cxx_init_fn_ptr.3], section "llvm.metadata"71