| 1 | // RUN: %clang_cc1 %s -triple=i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s |
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| 2 | |
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| 3 | int f(); |
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| 4 | |
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| 5 | // CHECK: $"?x@selectany_init@@3HA" = comdat any |
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| 6 | // CHECK: $"?x@?$A@H@explicit_template_instantiation@@2HB" = comdat any |
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| 7 | // CHECK: $"?x@?$A@H@implicit_template_instantiation@@2HB" = comdat any |
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| 8 | |
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| 9 | namespace simple_init { |
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| 10 | #pragma init_seg(compiler) |
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| 11 | int x = f(); |
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| 12 | // CHECK: @"?x@simple_init@@3HA" = dso_local global i32 0, align 4 |
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| 13 | // CHECK: @__cxx_init_fn_ptr = private constant void ()* @"??__Ex@simple_init@@YAXXZ", section ".CRT$XCC" |
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| 14 | |
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| 15 | #pragma init_seg(lib) |
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| 16 | int y = f(); |
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| 17 | // CHECK: @"?y@simple_init@@3HA" = dso_local global i32 0, align 4 |
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| 18 | // CHECK: @__cxx_init_fn_ptr.1 = private constant void ()* @"??__Ey@simple_init@@YAXXZ", section ".CRT$XCL" |
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| 19 | |
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| 20 | #pragma init_seg(user) |
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| 21 | int z = f(); |
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| 22 | // CHECK: @"?z@simple_init@@3HA" = dso_local global i32 0, align 4 |
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| 23 | // No function pointer! This one goes on @llvm.global_ctors. |
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| 24 | } |
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| 25 | |
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| 26 | #pragma init_seg(".asdf") |
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| 27 | |
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| 28 | namespace internal_init { |
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| 29 | namespace { |
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| 30 | int x = f(); |
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| 31 | // CHECK: @"?x@?A0x{{[^@]*}}@internal_init@@3HA" = internal global i32 0, align 4 |
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| 32 | // CHECK: @__cxx_init_fn_ptr.2 = private constant void ()* @"??__Ex@?A0x{{[^@]*}}@internal_init@@YAXXZ", section ".asdf" |
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| 33 | } |
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| 34 | } |
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| 35 | |
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| 36 | namespace selectany_init { |
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| 37 | int __declspec(selectany) x = f(); |
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| 38 | // CHECK: @"?x@selectany_init@@3HA" = weak_odr dso_local global i32 0, comdat, align 4 |
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| 39 | // CHECK: @__cxx_init_fn_ptr.3 = private constant void ()* @"??__Ex@selectany_init@@YAXXZ", section ".asdf", comdat($"?x@selectany_init@@3HA") |
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| 40 | } |
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| 41 | |
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| 42 | namespace explicit_template_instantiation { |
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| 43 | template <typename T> struct A { static const int x; }; |
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| 44 | template <typename T> const int A<T>::x = f(); |
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| 45 | template struct A<int>; |
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| 46 | // CHECK: @"?x@?$A@H@explicit_template_instantiation@@2HB" = weak_odr dso_local global i32 0, comdat, align 4 |
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| 47 | // CHECK: @__cxx_init_fn_ptr.4 = private constant void ()* @"??__E?x@?$A@H@explicit_template_instantiation@@2HB@@YAXXZ", section ".asdf", comdat($"?x@?$A@H@explicit_template_instantiation@@2HB") |
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| 48 | } |
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| 49 | |
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| 50 | namespace implicit_template_instantiation { |
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| 51 | template <typename T> struct A { static const int x; }; |
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| 52 | template <typename T> const int A<T>::x = f(); |
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| 53 | int g() { return A<int>::x; } |
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| 54 | // CHECK: @"?x@?$A@H@implicit_template_instantiation@@2HB" = linkonce_odr dso_local global i32 0, comdat, align 4 |
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| 55 | // CHECK: @__cxx_init_fn_ptr.5 = private constant void ()* @"??__E?x@?$A@H@implicit_template_instantiation@@2HB@@YAXXZ", section ".asdf", comdat($"?x@?$A@H@implicit_template_instantiation@@2HB") |
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| 56 | } |
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| 57 | |
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| 58 | // ... and here's where we emitted user level ctors. |
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| 59 | // CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] |
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| 60 | // CHECK: [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_pragma_init_seg.cpp, i8* null }] |
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| 61 | |
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| 62 | // We have to mark everything used so we can survive globalopt, even through |
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| 63 | // LTO. There's no way LLVM could really understand if data in the .asdf |
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| 64 | // section is really used or dead. |
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| 65 | // |
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| 66 | // CHECK: @llvm.used = appending global [6 x i8*] |
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| 67 | // CHECK: [i8* bitcast (void ()** @__cxx_init_fn_ptr to i8*), |
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| 68 | // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr.1 to i8*), |
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| 69 | // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr.2 to i8*), |
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| 70 | // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr.3 to i8*), |
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| 71 | // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr.4 to i8*), |
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| 72 | // CHECK: i8* bitcast (void ()** @__cxx_init_fn_ptr.5 to i8*)], section "llvm.metadata" |
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| 73 | |
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