forked from OSchip/llvm-project
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
This commit is contained in:
Reid Kleckner
parent
2ac6aca8af
commit
1808c02c15
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@ -3000,9 +3000,13 @@ CodeGenModule::CreateRuntimeFunction(llvm::FunctionType *FTy, StringRef Name,
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if (F->empty()) {
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F->setCallingConv(getRuntimeCC());
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if (!Local && getTriple().isOSBinFormatCOFF() &&
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!getCodeGenOpts().LTOVisibilityPublicStd &&
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!getTriple().isWindowsGNUEnvironment()) {
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// In Windows Itanium environments, try to mark runtime functions
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// dllimport. For Mingw and MSVC, don't. We don't really know if the user
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// will link their standard library statically or dynamically. Marking
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// functions imported when they are not imported can cause linker errors
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// and warnings.
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if (!Local && getTriple().isWindowsItaniumEnvironment() &&
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!getCodeGenOpts().LTOVisibilityPublicStd) {
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const FunctionDecl *FD = GetRuntimeFunctionDecl(Context, Name);
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if (!FD || FD->hasAttr<DLLImportAttr>()) {
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F->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
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@ -0,0 +1,63 @@
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// RUN: %clang_cc1 -fms-extensions -fms-compatibility-version=19.20 -triple x86_64-windows-msvc -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck %s --check-prefix=MSVC
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// RUN: %clang_cc1 -fms-extensions -fms-compatibility-version=19.20 -triple aarch64-windows-msvc -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck %s --check-prefix=MSVC
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// RUN: %clang_cc1 -triple x86_64-windows-itanium -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck %s --check-prefix=ITANIUM
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// RUN: %clang_cc1 -triple aarch64-windows-gnu -fexceptions -fcxx-exceptions -emit-llvm -o - %s | FileCheck %s --check-prefix=GNU
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void foo1() { throw 1; }
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// _CxxThrowException should not be marked dllimport.
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// MSVC-LABEL: define dso_local void @"?foo1@@YAXXZ"
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// MSVC: call void @_CxxThrowException
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// MSVC: declare dso_local void @_CxxThrowException(i8*, %eh.ThrowInfo*)
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// __cxa_throw should be marked dllimport for *-windows-itanium.
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// ITANIUM-LABEL: define dso_local void @_Z4foo1v()
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// ITANIUM: call void @__cxa_throw({{.*}})
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// ITANIUM: declare dllimport void @__cxa_throw({{.*}})
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// ... but not for *-windows-gnu.
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// GNU-LABEL: define dso_local void @_Z4foo1v()
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// GNU: call void @__cxa_throw({{.*}})
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// GNU: declare dso_local void @__cxa_throw({{.*}})
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void bar();
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void foo2() noexcept(true) { bar(); }
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// __std_terminate should not be marked dllimport.
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// MSVC-LABEL: define dso_local void @"?foo2@@YAXXZ"
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// MSVC: call void @__std_terminate()
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// MSVC: declare dso_local void @__std_terminate()
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// _ZSt9terminatev and __cxa_begin_catch should be marked dllimport.
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// ITANIUM-LABEL: define linkonce_odr hidden void @__clang_call_terminate(i8*)
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// ITANIUM: call i8* @__cxa_begin_catch({{.*}})
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// ITANIUM: call void @_ZSt9terminatev()
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// ITANIUM: declare dllimport i8* @__cxa_begin_catch(i8*)
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// ITANIUM: declare dllimport void @_ZSt9terminatev()
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// .. not for mingw.
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// GNU-LABEL: define linkonce_odr hidden void @__clang_call_terminate(i8*)
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// GNU: call i8* @__cxa_begin_catch({{.*}})
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// GNU: call void @_ZSt9terminatev()
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// GNU: declare dso_local i8* @__cxa_begin_catch(i8*)
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// GNU: declare dso_local void @_ZSt9terminatev()
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struct A {};
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struct B { virtual void f(); };
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struct C : A, virtual B {};
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struct T {};
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T *foo3() { return dynamic_cast<T *>((C *)0); }
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// __RTDynamicCast should not be marked dllimport.
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// MSVC-LABEL: define dso_local %struct.T* @"?foo3@@YAPEAUT@@XZ"
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// MSVC: call i8* @__RTDynamicCast({{.*}})
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// MSVC: declare dso_local i8* @__RTDynamicCast(i8*, i32, i8*, i8*, i32)
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// Again, imported
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// ITANIUM-LABEL: define dso_local %struct.T* @_Z4foo3v()
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// ITANIUM: call i8* @__dynamic_cast({{.*}})
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// ITANIUM: declare dllimport i8* @__dynamic_cast({{.*}})
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// Not imported
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// GNU-LABEL: define dso_local %struct.T* @_Z4foo3v()
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// GNU: call i8* @__dynamic_cast({{.*}})
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// GNU: declare dso_local i8* @__dynamic_cast({{.*}})
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@ -14,7 +14,7 @@
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// 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
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// 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
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// 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-DYNAMIC-IA
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// 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
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// 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
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#if defined(IMPORT_DECLARATIONS)
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@ -108,7 +108,7 @@ void l() {
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// CHECK-MS-DAG: @_Init_thread_epoch = external thread_local global i32
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// CHECK-MS-DAG: declare dso_local i32 @__tlregdtor(void ()*)
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// CHECK-MS-DAG: declare dso_local i32 @atexit(void ()*)
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// CHECK-MS-DYNAMIC-DAG: declare dllimport {{.*}} void @_CxxThrowException
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// CHECK-MS-DYNAMIC-DAG: declare {{.*}} void @_CxxThrowException
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// CHECK-MS-STATIC-DAG: declare {{.*}} void @_CxxThrowException
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// CHECK-MS-DAG: declare dso_local noalias i8* @"??2@YAPAXI@Z"
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// CHECK-MS-DAG: declare dso_local void @_Init_thread_header(i32*)
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@ -100,6 +100,6 @@
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// Check our load function is in a comdat.
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// CHECK-WIN: define linkonce_odr hidden void @.objcv2_load_function() comdat {
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// Make sure we have dllimport on the load function
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// CHECK-WIN: declare dllimport void @__objc_load
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// Make sure we do not have dllimport on the load function
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// CHECK-WIN: declare dso_local void @__objc_load
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@ -13,6 +13,5 @@ S f() {
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return [I m:S()];
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}
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// CHECK: declare dllimport void @objc_msgSend_stret(i8*, i8*, ...)
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// CHECK: declare dso_local void @objc_msgSend_stret(i8*, i8*, ...)
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// CHECK-NOT: declare dllimport void @objc_msgSend(i8*, i8*, ...)
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