diff options
author | Jennifer Yu <jennifer.yu@intel.com> | 2019-04-03 17:21:40 +0000 |
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committer | Jennifer Yu <jennifer.yu@intel.com> | 2019-04-03 17:21:40 +0000 |
commit | 86ef09fc94489c51bb60a8f125b5219df3748d66 (patch) | |
tree | 05d3dbee226988f861404913eafe2e1e62d92bb1 /test/CodeGenCXX | |
parent | d1957e232eb31ddf9a34a8a4378e07f916092cd6 (diff) |
Bug-40323: MS ABI adding template static member in the linker directive section to make sure init function can be called before main.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@357610 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGenCXX')
-rw-r--r-- | test/CodeGenCXX/microsoft-abi-template-static-init.cpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/test/CodeGenCXX/microsoft-abi-template-static-init.cpp b/test/CodeGenCXX/microsoft-abi-template-static-init.cpp new file mode 100644 index 0000000000..0bceaf0dec --- /dev/null +++ b/test/CodeGenCXX/microsoft-abi-template-static-init.cpp @@ -0,0 +1,57 @@ +// RUN: %clang_cc1 %s -triple=i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s +// RUN: %clang_cc1 %s -triple=x86_64-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s +// RUN: %clang_cc1 %s -triple=i686-pc-windows-msvc -fms-extensions -emit-llvm -o - | FileCheck %s +// RUN: %clang_cc1 %s -triple=x86_64-pc-windows-msvc -fms-extensions -emit-llvm -o - | FileCheck %s + +struct S { + S(); + ~S(); +}; + +template <typename T> struct __declspec(dllexport) ExportedTemplate { + static S s; +}; +template <typename T> S ExportedTemplate<T>::s; +void useExportedTemplate(ExportedTemplate<int> x) { + (void)x.s; +} +int f(); +namespace selectany_init { +// MS don't put selectany static var in the linker directive, init routine +// f() is not getting called if x is not referenced. +int __declspec(selectany) x = f(); +} + +namespace explicit_template_instantiation { +template <typename T> struct A { static int x; }; +template <typename T> int A<T>::x = f(); +template struct A<int>; +} + +namespace implicit_template_instantiation { +template <typename T> struct A { static int x; }; +template <typename T> int A<T>::x = f(); +int g() { return A<int>::x; } +} + + +template <class T> +struct X_ { + static T ioo; + static T init(); +}; +template <class T> T X_<T>::ioo = X_<T>::init(); +template struct X_<int>; + +template <class T> +struct X { + static T ioo; + static T init(); +}; +// template specialized static data don't need in llvm.used, +// the static init routine get call from _GLOBAL__sub_I_ routines. +template <> int X<int>::ioo = X<int>::init(); +template struct X<int>; +// CHECK: @llvm.global_ctors = appending global [6 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @"??__Ex@selectany_init@@YAXXZ", i8* bitcast (i32* @"?x@selectany_init@@3HA" to i8*) }, { i32, void ()*, i8* } { i32 65535, void ()* @"??__E?x@?$A@H@explicit_template_instantiation@@2HA@@YAXXZ", i8* bitcast (i32* @"?x@?$A@H@explicit_template_instantiation@@2HA" to i8*) }, { i32, void ()*, i8* } { i32 65535, void ()* @"??__E?ioo@?$X_@H@@2HA@@YAXXZ", i8* bitcast (i32* @"?ioo@?$X_@H@@2HA" to i8*) }, { i32, void ()*, i8* } { i32 65535, void ()* @"??__E?s@?$ExportedTemplate@H@@2US@@A@@YAXXZ", i8* getelementptr inbounds (%struct.S, %struct.S* @"?s@?$ExportedTemplate@H@@2US@@A", i32 0, i32 0) }, { i32, void ()*, i8* } { i32 65535, void ()* @"??__E?x@?$A@H@implicit_template_instantiation@@2HA@@YAXXZ", i8* bitcast (i32* @"?x@?$A@H@implicit_template_instantiation@@2HA" to i8*) }, { i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_microsoft_abi_template_static_init.cpp, i8* null }] +// CHECK: @llvm.used = appending global [4 x i8*] [i8* bitcast (i32* @"?x@?$A@H@explicit_template_instantiation@@2HA" to i8*), i8* bitcast (i32* @"?ioo@?$X_@H@@2HA" to i8*), i8* getelementptr inbounds (%struct.S, %struct.S* @"?s@?$ExportedTemplate@H@@2US@@A", i32 0, i32 0), i8* bitcast (i32* @"?x@?$A@H@implicit_template_instantiation@@2HA" to i8*)], section "llvm.metadata" + |