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llvm-project/clang/test/CodeGenCXX/runtime-dllstorage.cpp

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[FileCheck] Add -allow-deprecated-dag-overlap to failing clang tests See https://reviews.llvm.org/D47106 for details. Reviewed By: probinson Differential Revision: https://reviews.llvm.org/D47172 llvm-svn: 336844
2018-07-12 04:26:20 +08:00
// RUN: %clang_cc1 -triple i686-windows-msvc -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-MS -check-prefix CHECK-MS-DYNAMIC
// RUN: %clang_cc1 -triple i686-windows-msvc -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -flto-visibility-public-std -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-MS -check-prefix CHECK-MS-STATIC
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
[FileCheck] Add -allow-deprecated-dag-overlap to failing clang tests See https://reviews.llvm.org/D47106 for details. Reviewed By: probinson Differential Revision: https://reviews.llvm.org/D47172 llvm-svn: 336844
2018-07-12 04:26:20 +08:00
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-DYNAMIC-IA -check-prefix CHECK-DYNAMIC-NODECL-IA -check-prefix CHECK-DYANMIC-IA-CXA-ATEXIT
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -flto-visibility-public-std -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA -check-prefix CHECK-STATIC-NODECL-IA -check-prefix CHECK-IA-STATIC-CXA-ATEXIT
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -DIMPORT_DECLARATIONS -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-DYNAMIC-IA -check-prefix CHECK-DYNAMIC-IMPORT-IA -check-prefix CHECK-DYANMIC-IA-CXA-ATEXIT
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -flto-visibility-public-std -DIMPORT_DECLARATIONS -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA -check-prefix CHECK-STATIC-IMPORT-IA -check-prefix CHECK-IA-STATIC-CXA-ATEXIT
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -DEXPORT_DECLARATIONS -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-DYNAMIC-IA -check-prefix CHECK-DYANMIC-IA-CXA-ATEXIT
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -flto-visibility-public-std -DEXPORT_DECLARATIONS -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA -check-prefix CHECK-IA-STATIC-CXA-ATEXIT
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -DDECL -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-DYNAMIC-IA -check-prefix CHECK-DYNAMIC-DECL-IA -check-prefix CHECK-DYANMIC-IA-CXA-ATEXIT
// RUN: %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -flto-visibility-public-std -DDECL -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA -check-prefix CHECK-STATIC-DECL-IA -check-prefix CHECK-IA-STATIC-CXA-ATEXIT
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
// %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -fno-use-cxa-atexit -emit-llvm -o - %s | FileCheck %s -check-prefix CHECK-IA -check-prefix CHECK-DYNAMIC-IA -check-prefix CHECK-DYNAMIC-IA-ATEXIT
// %clang_cc1 -triple i686-windows-itanium -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -fno-use-cxa-atexit -emit-llvm -o - %s | FileCheck %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA -check-prefix CHECK-STATIC-IA-ATEXIT
[FileCheck] Add -allow-deprecated-dag-overlap to failing clang tests See https://reviews.llvm.org/D47106 for details. Reviewed By: probinson Differential Revision: https://reviews.llvm.org/D47172 llvm-svn: 336844
2018-07-12 04:26:20 +08:00
// RUN: %clang_cc1 -triple i686-windows-gnu -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA
// RUN: %clang_cc1 -triple i686-windows-gnu -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -flto-visibility-public-std -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA
Re-land r359250, [COFF] Statically link certain runtime library functions Reverts the revert of r359251, this time with fixed tests. Differential Revision: https://reviews.llvm.org/D55229 llvm-svn: 359513
2019-04-30 07:05:47 +08:00
// RUN: %clang_cc1 -triple i686-windows-cygnus -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA
[FileCheck] Add -allow-deprecated-dag-overlap to failing clang tests See https://reviews.llvm.org/D47106 for details. Reviewed By: probinson Differential Revision: https://reviews.llvm.org/D47172 llvm-svn: 336844
2018-07-12 04:26:20 +08:00
// RUN: %clang_cc1 -triple i686-windows-cygnus -std=c++11 -fdeclspec -fms-compatibility -fexceptions -fcxx-exceptions -flto-visibility-public-std -emit-llvm -o - %s | FileCheck -allow-deprecated-dag-overlap %s -check-prefix CHECK-IA -check-prefix CHECK-STATIC-IA
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
#if defined(IMPORT_DECLARATIONS)
namespace __cxxabiv1 {
extern "C" {
__declspec(dllimport) void __cxa_guard_acquire(unsigned long long *);
__declspec(dllimport) unsigned char *__cxa_allocate_exception(unsigned long);
}
extern "C" __declspec(dllimport) void __cxa_guard_release(unsigned long long *);
}
namespace std {
__declspec(dllimport) __declspec(noreturn) void terminate();
}
#elif defined(EXPORT_DECLARATIONS)
namespace __cxxabiv1 {
extern "C" {
__declspec(dllexport) void __cxa_guard_acquire(unsigned long long *);
__declspec(dllexport) unsigned char *__cxa_allocate_exception(unsigned long);
}
extern "C" void __declspec(dllexport) __cxa_guard_release(unsigned long long *);
}
namespace std {
__declspec(dllexport) __declspec(noreturn) void terminate();
}
#elif defined(DECL)
namespace __cxxabiv1 {
extern "C" unsigned char *__cxa_allocate_exception(unsigned long);
}
namespace std {
__declspec(noreturn) void terminate();
}
#else
namespace std {
__declspec(noreturn) void terminate();
}
#endif
struct s {
s() = default;
s(unsigned char) { throw 0; }
int m() const;
};
struct t {
~t();
int m() const;
};
struct u {
~u();
};
s o;
thread_local t t;
u v;
__declspec(thread) s q;
void __declspec(noinline) f() {
throw 0;
}
void g();
void __declspec(noinline) h() {
try {
g();
} catch (const int &) {
return;
} catch (...) {
throw;
}
}
void i() {
s r(static_cast<unsigned char>('\t'));
}
int j() {
static thread_local struct t v;
static struct t *w = new struct t;
return w->m() ? v.m() : w->m();
}
void k() noexcept {
g();
}
void l() {
std::terminate();
}
// CHECK-MS-DAG: @_Init_thread_epoch = external thread_local global i32
Set dso_local for runtime function. This is another case where there is special logic for adding dllimport and so we cannot use setGVProperties. llvm-svn: 328036
2018-03-21 04:27:30 +08:00
// CHECK-MS-DAG: declare dso_local i32 @__tlregdtor(void ()*)
// CHECK-MS-DAG: declare dso_local i32 @atexit(void ()*)
Re-land r359250, [COFF] Statically link certain runtime library functions Reverts the revert of r359251, this time with fixed tests. Differential Revision: https://reviews.llvm.org/D55229 llvm-svn: 359513
2019-04-30 07:05:47 +08:00
// CHECK-MS-DYNAMIC-DAG: declare {{.*}} void @_CxxThrowException
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
// CHECK-MS-STATIC-DAG: declare {{.*}} void @_CxxThrowException
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-MS-DAG: declare dso_local noalias i8* @"??2@YAPAXI@Z"
Set dso_local for runtime function. This is another case where there is special logic for adding dllimport and so we cannot use setGVProperties. llvm-svn: 328036
2018-03-21 04:27:30 +08:00
// CHECK-MS-DAG: declare dso_local void @_Init_thread_header(i32*)
// CHECK-MS-DAG: declare dso_local void @_Init_thread_footer(i32*)
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
Set dso_local on tls init functions. We copy the visibility, so copying the dso_local flag seems the natural thing to do. llvm-svn: 326961
2018-03-08 07:18:06 +08:00
// CHECK-IA-DAG: @_ZTH1t = dso_local alias void (), void ()* @__tls_init
Set dso_local for runtime function. This is another case where there is special logic for adding dllimport and so we cannot use setGVProperties. llvm-svn: 328036
2018-03-21 04:27:30 +08:00
// CHECK-IA-DAG: declare dso_local i32 @__gxx_personality_v0(...)
IR: print value numbers for unnamed function arguments For consistency with normal instructions and clarity when reading IR, it's best to print the %0, %1, ... names of function arguments in definitions. Also modifies the parser to accept IR in that form for obvious reasons. llvm-svn: 367755
2019-08-03 22:28:34 +08:00
// CHECK-IA-DAG: define linkonce_odr hidden void @__clang_call_terminate(i8* %0)
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
// CHECK-DYNAMIC-IA-DAG: declare dllimport i32 @__cxa_thread_atexit(void (i8*)*, i8*, i8*)
// CHECK-DYNAMIC-IA-DAG: declare dllimport i32 @__cxa_atexit(void (i8*)*, i8*, i8*)
// CHECK-DYNAMIC-IA-DECL-DAG: declare i8* @__cxa_allocate_exception(i32)
// CHECK-DYNAMIC-IA-NODECL-DAG: declare dllimport i8* @__cxa_allocate_exception(i32)
// CHECK-DYNAMIC-IA-IMPORT-DAG: declare dllimport i8* @__cxa_allocate_exception(i32)
// CHECK-DYNAMIC-IA-EXPORT-DAG: declare dllimport i8* @__cxa_allocate_exception(i32)
// CHECK-DYNAMIC-IA-DAG: declare dllimport void @__cxa_throw(i8*, i8*, i8*)
// CHECK-DYNAMIC-DECL-IA-DAG: declare dllimport i32 @__cxa_guard_acquire(i64*)
// CHECK-DYNAMIC-NODECL-IA-DAG: declare dllimport i32 @__cxa_guard_acquire(i64*)
// CHECK-DYNAMIC-IMPORT-IA-DAG: declare dllimport i32 @__cxa_guard_acquire(i64*)
// CHECK-DYNAMIC-EXPORT-IA-DAG: declare dllexport i32 @__cxa_guard_acquire(i64*)
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK-IA-DAG: declare dso_local noalias i8* @_Znwj(i32)
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
// CHECK-DYNAMIC-DECL-IA-DAG: declare dllimport void @__cxa_guard_release(i64*)
// CHECK-DYNAMIC-NODECL-IA-DAG: declare dllimport void @__cxa_guard_release(i64*)
// CHECK-DYNAMIC-IMPORT-IA-DAG: declare dllimport void @__cxa_guard_release(i64*)
// CHECK-DYNAMIC-EXPORT-IA-DAG: declare dllimport void @__cxa_guard_release(i64*)
// CHECK-DYANMIC-IA-DAG: declare dllimport void @_ZSt9terminatev()
Set dso_local for runtime function. This is another case where there is special logic for adding dllimport and so we cannot use setGVProperties. llvm-svn: 328036
2018-03-21 04:27:30 +08:00
// CHECK-DYNAMIC-NODECL-IA-DAG: declare dso_local void @_ZSt9terminatev()
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
// CHECK-DYNAMIC-IMPORT-IA-DAG: declare dllimport void @_ZSt9terminatev()
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK-DYNAMIC-EXPORT-IA-DAG: declare dso_local dllexport void @_ZSt9terminatev()
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00
Set dso_local for runtime function. This is another case where there is special logic for adding dllimport and so we cannot use setGVProperties. llvm-svn: 328036
2018-03-21 04:27:30 +08:00
// CHECK-STATIC-IA-DAG: declare dso_local i32 @__cxa_thread_atexit(void (i8*)*, i8*, i8*)
// CHECK-STATIC-IA-DAG: declare dso_local i32 @__cxa_atexit(void (i8*)*, i8*, i8*)
// CHECK-STATIC-IA-DAG: declare dso_local i8* @__cxa_allocate_exception(i32)
// CHECK-STATIC-IA-DAG: declare dso_local void @__cxa_throw(i8*, i8*, i8*)
// CHECK-STATIC-DECL-IA-DAG: declare dso_local i32 @__cxa_guard_acquire(i64*)
// CHECK-STATIC-NODECL-IA-DAG: declare dso_local i32 @__cxa_guard_acquire(i64*)
// CHECK-STATIC-IMPORT-IA-DAG: declare dso_local i32 @__cxa_guard_acquire(i64*)
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK-STATIC-EXPORT-IA-DAG: declare dso_local i32 @__cxa_guard_acquire(i64*)
// CHECK-IA-DAG: declare dso_local noalias i8* @_Znwj(i32)
Set dso_local for runtime function. This is another case where there is special logic for adding dllimport and so we cannot use setGVProperties. llvm-svn: 328036
2018-03-21 04:27:30 +08:00
// CHECK-STATIC-DECL-IA-DAG: declare dso_local void @__cxa_guard_release(i64*)
// CHECK-STATIC-NODECL-IA-DAG: declare dso_local void @__cxa_guard_release(i64*)
// CHECK-STATIC-IMPORT-IA-DAG: declare dso_local void @__cxa_guard_release(i64*)
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK-STATIC-EXPORT-IA-DAG: declare dso_local void @__cxa_guard_release(i64*)
Set dso_local for runtime function. This is another case where there is special logic for adding dllimport and so we cannot use setGVProperties. llvm-svn: 328036
2018-03-21 04:27:30 +08:00
// CHECK-STATIC-IA-DAG: declare dso_local void @_ZSt9terminatev()
// CHECK-STATIC-NODECL-IA-DAG: declare dso_local void @_ZSt9terminatev()
// CHECK-STATIC-IMPORT-IA-DAG: declare dso_local void @_ZSt9terminatev()
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK-STATIC-EXPORT-IA-DAG: declare dso_local dllexport void @_ZSt9terminatev()
CodeGen: fix runtime function dll storage Properly attribute DLL storage to runtime functions. When generating the runtime function, scan for an existing declaration which may provide an explicit declaration (local storage) or a DLL import or export storage from the user. Honour that if available. Otherwise, if building with a local visibility of the public or standard namespaces (-flto-visibility-public-std), give the symbols local storage (it indicates a /MT[d] link, so static runtime). Otherwise, assume that the link is dynamic, and give the runtime function dllimport storage. This allows for implementations to get the correct storage as long as they are properly declared, the user to override the import storage, and in case no explicit storage is given, use of the import storage. llvm-svn: 289776
2016-12-15 14:59:05 +08:00