[clang] Objective C: use C++ exceptions on MinGW+GNUstep (PR #77255)
Frederik Carlier via cfe-commits
cfe-commits at lists.llvm.org
Tue Jan 9 01:31:58 PST 2024
https://github.com/qmfrederik updated https://github.com/llvm/llvm-project/pull/77255
>From 6195e6c57b5b461dda2bffec0e5497ceb659f82c Mon Sep 17 00:00:00 2001
From: Frederik Carlier <frederik.carlier at keysight.com>
Date: Thu, 4 Jan 2024 11:10:05 -0800
Subject: [PATCH 1/2] Objective C: use C++ exceptions on MinGW+GNUstep
The GNUstep Objective C runtime (libobjc2) is adding support for
MinGW. This runtime uses C++ exceptions in that configuration.
---
clang/lib/CodeGen/CGException.cpp | 9 +++-
clang/lib/CodeGen/CGObjCGNU.cpp | 35 ++++++++----
.../test/CodeGenObjC/exceptions-personality.m | 53 +++++++++++++++++++
clang/test/CodeGenObjC/personality.m | 5 +-
clang/test/CodeGenObjCXX/personality.mm | 5 +-
5 files changed, 92 insertions(+), 15 deletions(-)
create mode 100644 clang/test/CodeGenObjC/exceptions-personality.m
diff --git a/clang/lib/CodeGen/CGException.cpp b/clang/lib/CodeGen/CGException.cpp
index 0d507da5c1ba92..cadd6f6ad75daa 100644
--- a/clang/lib/CodeGen/CGException.cpp
+++ b/clang/lib/CodeGen/CGException.cpp
@@ -156,7 +156,9 @@ static const EHPersonality &getObjCPersonality(const TargetInfo &Target,
case ObjCRuntime::WatchOS:
return EHPersonality::NeXT_ObjC;
case ObjCRuntime::GNUstep:
- if (L.ObjCRuntime.getVersion() >= VersionTuple(1, 7))
+ if (T.isOSCygMing())
+ return EHPersonality::GNU_CPlusPlus_SEH;
+ else if (L.ObjCRuntime.getVersion() >= VersionTuple(1, 7))
return EHPersonality::GNUstep_ObjC;
[[fallthrough]];
case ObjCRuntime::GCC:
@@ -210,7 +212,10 @@ static const EHPersonality &getObjCXXPersonality(const TargetInfo &Target,
return getObjCPersonality(Target, L);
case ObjCRuntime::GNUstep:
- return EHPersonality::GNU_ObjCXX;
+ if (Target.getTriple().isOSCygMing())
+ return EHPersonality::GNU_CPlusPlus_SEH;
+ else
+ return EHPersonality::GNU_ObjCXX;
// The GCC runtime's personality function inherently doesn't support
// mixed EH. Use the ObjC personality just to avoid returning null.
diff --git a/clang/lib/CodeGen/CGObjCGNU.cpp b/clang/lib/CodeGen/CGObjCGNU.cpp
index 4ca1a8cce64d89..2b3a5da87fb778 100644
--- a/clang/lib/CodeGen/CGObjCGNU.cpp
+++ b/clang/lib/CodeGen/CGObjCGNU.cpp
@@ -819,10 +819,19 @@ class CGObjCGNUstep : public CGObjCGNU {
SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy,
PtrToObjCSuperTy, SelectorTy);
// If we're in ObjC++ mode, then we want to make
- if (usesSEHExceptions) {
- llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
- // void objc_exception_rethrow(void)
- ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy);
+ if (CGM.getTarget().getTriple().isOSCygMing() &&
+ isRuntime(ObjCRuntime::GNUstep, 2)) {
+ llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
+ // void *__cxa_begin_catch(void *e)
+ EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy);
+ // void __cxa_end_catch(void)
+ ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy);
+ // void objc_exception_rethrow(void*)
+ ExceptionReThrowFn.init(&CGM, "__cxa_rethrow", PtrTy);
+ } else if (usesSEHExceptions) {
+ llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
+ // void objc_exception_rethrow(void)
+ ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy);
} else if (CGM.getLangOpts().CPlusPlus) {
llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
// void *__cxa_begin_catch(void *e)
@@ -2210,7 +2219,12 @@ CGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion,
// void objc_exception_throw(id);
ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy);
- ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy);
+ if ((CGM.getTarget().getTriple().isOSCygMing() &&
+ isRuntime(ObjCRuntime::GNUstep, 2))) {
+ ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy, IdTy);
+ } else {
+ ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy);
+ }
// int objc_sync_enter(id);
SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy);
// int objc_sync_exit(id);
@@ -2387,7 +2401,9 @@ llvm::Constant *CGObjCGNUstep::GetEHType(QualType T) {
if (usesSEHExceptions)
return CGM.getCXXABI().getAddrOfRTTIDescriptor(T);
- if (!CGM.getLangOpts().CPlusPlus)
+ if (!CGM.getLangOpts().CPlusPlus &&
+ !(CGM.getTarget().getTriple().isOSCygMing() &&
+ isRuntime(ObjCRuntime::GNUstep, 2)))
return CGObjCGNU::GetEHType(T);
// For Objective-C++, we want to provide the ability to catch both C++ and
@@ -3993,7 +4009,9 @@ void CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF,
ExceptionAsObject = CGF.ObjCEHValueStack.back();
isRethrow = true;
}
- if (isRethrow && usesSEHExceptions) {
+ if (isRethrow &&
+ (usesSEHExceptions || (CGM.getTarget().getTriple().isOSCygMing() &&
+ isRuntime(ObjCRuntime::GNUstep, 2)))) {
// For SEH, ExceptionAsObject may be undef, because the catch handler is
// not passed it for catchalls and so it is not visible to the catch
// funclet. The real thrown object will still be live on the stack at this
@@ -4003,8 +4021,7 @@ void CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF,
// argument.
llvm::CallBase *Throw = CGF.EmitRuntimeCallOrInvoke(ExceptionReThrowFn);
Throw->setDoesNotReturn();
- }
- else {
+ } else {
ExceptionAsObject = CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy);
llvm::CallBase *Throw =
CGF.EmitRuntimeCallOrInvoke(ExceptionThrowFn, ExceptionAsObject);
diff --git a/clang/test/CodeGenObjC/exceptions-personality.m b/clang/test/CodeGenObjC/exceptions-personality.m
new file mode 100644
index 00000000000000..9c25ee38b6d7cf
--- /dev/null
+++ b/clang/test/CodeGenObjC/exceptions-personality.m
@@ -0,0 +1,53 @@
+// RUN: %clang_cc1 -triple x86_64-w64-windows-gnu -emit-llvm -fobjc-runtime=gnustep-2.0 -fexceptions -fobjc-exceptions -o %t %s
+// RUN: FileCheck --check-prefixes=CHECK-MINGW-OBJC2 < %t %s
+
+// RUN: %clang_cc1 -triple x86_64-w64-windows-gnu -emit-llvm -fobjc-runtime=gcc -fexceptions -fobjc-exceptions -o %t %s
+// RUN: FileCheck --check-prefixes=CHECK-MINGW-GCC < %t %s
+
+// RUN: %clang_cc1 -triple x86_64-w64-windows-msvc -emit-llvm -fobjc-runtime=gnustep-2.0 -fexceptions -fobjc-exceptions -o %t %s
+// RUN: FileCheck --check-prefixes=CHECK-MSVC-OBJC2 < %t %s
+
+// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -fobjc-runtime=gnustep-2.0 -fexceptions -fobjc-exceptions -o %t %s
+// RUN: FileCheck --check-prefixes=CHECK-LINUX-OBJC2 < %t %s
+
+// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -fobjc-runtime=gcc -fexceptions -fobjc-exceptions -o %t %s
+// RUN: FileCheck --check-prefixes=CHECK-LINUX-GCC < %t %s
+ at interface Foo @end
+
+void throwing(void) {
+ @try
+ {
+ // CHECK-MINGW-OBJC2: personality ptr @__gxx_personality_seh0
+ // CHECK-MINGW-OBJC2: invoke void @objc_exception_throw
+
+ // CHECK-MINGW-GCC: personality ptr @__gnu_objc_personality_v0
+ // CHECK-MINGW-GCC: invoke void @objc_exception_throw
+
+ // CHECK-MSVC-OBJC2: personality ptr @__CxxFrameHandler3
+ // CHECK-MSVC-OBJC2: invoke void @objc_exception_throw
+
+ // CHECK-LINUX-OBJC2: personality ptr @__gnustep_objc_personality_v0
+ // CHECK-LINUX-OBJC2: invoke void @objc_exception_throw
+
+ // CHECK-LINUX-GCC: personality ptr @__gnu_objc_personality_v0
+ @throw(@"error!");
+ }
+ @catch(...)
+ {
+ // CHECK-MINGW-OBJC2: call ptr @__cxa_begin_catch
+ // CHECK-MINGW-OBJC2: invoke ptr @__cxa_rethrow
+ // CHECK-MINGW-OBJC2: invoke void @__cxa_end_catch
+
+ // CHECK-MINGW-GCC: call void @objc_exception_throw
+
+ // CHECK-MSVC-OBJC2: call void @objc_exception_rethrow
+
+ // CHECK-LINUX-OBJC2: call ptr @objc_begin_catch
+ // CHECK-LINUX-OBJC2: invoke void @objc_exception_throw
+ // CHECK-LINUX-OBJC2: invoke void @objc_end_catch()
+
+ // CHECK-LINUX-GCC: invoke void @objc_exception_throw
+
+ @throw;
+ }
+}
diff --git a/clang/test/CodeGenObjC/personality.m b/clang/test/CodeGenObjC/personality.m
index 6ec67ace3f1ac3..ede0aa34eaf625 100644
--- a/clang/test/CodeGenObjC/personality.m
+++ b/clang/test/CodeGenObjC/personality.m
@@ -27,8 +27,8 @@
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=ios -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-NS
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=macosx -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-NS
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=watchos -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-NS
-// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=gnustep-1.7 -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GNUSTEP-1_7
-// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=gnustep -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GNUSTEP
+// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=gnustep-1.7 -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-WIN-GNU
+// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=gnustep -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-WIN-GNU
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fobjc-runtime=gcc -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GCC
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -exception-model=seh -fobjc-exceptions -fobjc-runtime=gcc -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GCC-SEH
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -exception-model=sjlj -fobjc-exceptions -fobjc-runtime=gcc -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GCC-SJLJ
@@ -50,6 +50,7 @@
// CHECK-OBJFW-SJLJ: personality ptr @__gnu_objc_personality_sj0
// CHECK-WIN-MSVC: personality ptr @__CxxFrameHandler3
+// CHECK-WIN-GNU: personality ptr @__gxx_personality_seh0
// CHECK-MACOSX-FRAGILE-MINGW-DWARF: personality ptr @__gcc_personality_v0
// CHECK-MACOSX-FRAGILE-MINGW-SEH: personality ptr @__gcc_personality_seh0
diff --git a/clang/test/CodeGenObjCXX/personality.mm b/clang/test/CodeGenObjCXX/personality.mm
index c6debe6f60c2a2..b8c7af962bd0bd 100644
--- a/clang/test/CodeGenObjCXX/personality.mm
+++ b/clang/test/CodeGenObjCXX/personality.mm
@@ -50,8 +50,8 @@
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -exception-model=dwarf -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=watchos -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-NS
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -exception-model=seh -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=watchos -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-NS
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -exception-model=sjlj -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=watchos -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-NS
-// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=gnustep-1.7 -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GNUSTEP-1_7
-// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=gnustep -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GNUSTEP
+// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=gnustep-1.7 -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-WIN-GNU
+// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=gnustep -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-WIN-GNU
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=gcc -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GCC
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -exception-model=dwarf -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=gcc -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GCC
// RUN: %clang_cc1 -triple i686-unknown-windows-gnu -fexceptions -exception-model=seh -fobjc-exceptions -fcxx-exceptions -fobjc-runtime=gcc -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-GCC-SEH
@@ -81,6 +81,7 @@ + (void)e:(id)xception;
// CHECK-OBJFW-SJLJ: personality ptr @__gnu_objc_personality_sj0
// CHECK-WIN-MSVC: personality ptr @__CxxFrameHandler3
+// CHECK-WIN-GNU: personality ptr @__gxx_personality_seh0
void f(void) {
@try {
>From 8ff9bb07d7a430939c31a512d461b46f8df8636b Mon Sep 17 00:00:00 2001
From: Frederik Carlier <frederik.carlier at keysight.com>
Date: Tue, 9 Jan 2024 09:26:26 +0000
Subject: [PATCH 2/2] PR feedback
---
clang/lib/CodeGen/CGException.cpp | 6 ++----
clang/lib/CodeGen/CGObjCGNU.cpp | 25 +++++++++----------------
2 files changed, 11 insertions(+), 20 deletions(-)
diff --git a/clang/lib/CodeGen/CGException.cpp b/clang/lib/CodeGen/CGException.cpp
index cadd6f6ad75daa..56a246eb65e0a8 100644
--- a/clang/lib/CodeGen/CGException.cpp
+++ b/clang/lib/CodeGen/CGException.cpp
@@ -212,10 +212,8 @@ static const EHPersonality &getObjCXXPersonality(const TargetInfo &Target,
return getObjCPersonality(Target, L);
case ObjCRuntime::GNUstep:
- if (Target.getTriple().isOSCygMing())
- return EHPersonality::GNU_CPlusPlus_SEH;
- else
- return EHPersonality::GNU_ObjCXX;
+ return Target.getTriple().isOSCygMing() ? EHPersonality::GNU_CPlusPlus_SEH
+ : EHPersonality::GNU_ObjCXX;
// The GCC runtime's personality function inherently doesn't support
// mixed EH. Use the ObjC personality just to avoid returning null.
diff --git a/clang/lib/CodeGen/CGObjCGNU.cpp b/clang/lib/CodeGen/CGObjCGNU.cpp
index 2b3a5da87fb778..cf7cd18717480a 100644
--- a/clang/lib/CodeGen/CGObjCGNU.cpp
+++ b/clang/lib/CodeGen/CGObjCGNU.cpp
@@ -168,6 +168,8 @@ class CGObjCGNU : public CGObjCRuntime {
/// Does the current target use SEH-based exceptions? False implies
/// Itanium-style DWARF unwinding.
bool usesSEHExceptions;
+ /// Does the current target uses C++-based exceptions?
+ bool usesCxxExceptions;
/// Helper to check if we are targeting a specific runtime version or later.
bool isRuntime(ObjCRuntime::Kind kind, unsigned major, unsigned minor=0) {
@@ -819,21 +821,17 @@ class CGObjCGNUstep : public CGObjCGNU {
SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy,
PtrToObjCSuperTy, SelectorTy);
// If we're in ObjC++ mode, then we want to make
- if (CGM.getTarget().getTriple().isOSCygMing() &&
- isRuntime(ObjCRuntime::GNUstep, 2)) {
- llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
+ llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
+ if (usesCxxExceptions) {
// void *__cxa_begin_catch(void *e)
EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy);
// void __cxa_end_catch(void)
ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy);
// void objc_exception_rethrow(void*)
ExceptionReThrowFn.init(&CGM, "__cxa_rethrow", PtrTy);
- } else if (usesSEHExceptions) {
- llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
// void objc_exception_rethrow(void)
ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy);
} else if (CGM.getLangOpts().CPlusPlus) {
- llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
// void *__cxa_begin_catch(void *e)
EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy);
// void __cxa_end_catch(void)
@@ -842,7 +840,6 @@ class CGObjCGNUstep : public CGObjCGNU {
ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy,
PtrTy);
} else if (R.getVersion() >= VersionTuple(1, 7)) {
- llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
// id objc_begin_catch(void *e)
EnterCatchFn.init(&CGM, "objc_begin_catch", IdTy, PtrTy);
// void objc_end_catch(void)
@@ -850,7 +847,6 @@ class CGObjCGNUstep : public CGObjCGNU {
// void _Unwind_Resume_or_Rethrow(void*)
ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy, PtrTy);
}
- llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext);
SetPropertyAtomic.init(&CGM, "objc_setProperty_atomic", VoidTy, IdTy,
SelectorTy, IdTy, PtrDiffTy);
SetPropertyAtomicCopy.init(&CGM, "objc_setProperty_atomic_copy", VoidTy,
@@ -2133,6 +2129,8 @@ CGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion,
msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend");
usesSEHExceptions =
cgm.getContext().getTargetInfo().getTriple().isWindowsMSVCEnvironment();
+ usesCxxExceptions = CGM.getTarget().getTriple().isOSCygMing() &&
+ isRuntime(ObjCRuntime::GNUstep, 2);
CodeGenTypes &Types = CGM.getTypes();
IntTy = cast<llvm::IntegerType>(
@@ -2219,8 +2217,7 @@ CGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion,
// void objc_exception_throw(id);
ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy);
- if ((CGM.getTarget().getTriple().isOSCygMing() &&
- isRuntime(ObjCRuntime::GNUstep, 2))) {
+ if (usesCxxExceptions) {
ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy, IdTy);
} else {
ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy);
@@ -2401,9 +2398,7 @@ llvm::Constant *CGObjCGNUstep::GetEHType(QualType T) {
if (usesSEHExceptions)
return CGM.getCXXABI().getAddrOfRTTIDescriptor(T);
- if (!CGM.getLangOpts().CPlusPlus &&
- !(CGM.getTarget().getTriple().isOSCygMing() &&
- isRuntime(ObjCRuntime::GNUstep, 2)))
+ if (!CGM.getLangOpts().CPlusPlus && !usesCxxExceptions)
return CGObjCGNU::GetEHType(T);
// For Objective-C++, we want to provide the ability to catch both C++ and
@@ -4009,9 +4004,7 @@ void CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF,
ExceptionAsObject = CGF.ObjCEHValueStack.back();
isRethrow = true;
}
- if (isRethrow &&
- (usesSEHExceptions || (CGM.getTarget().getTriple().isOSCygMing() &&
- isRuntime(ObjCRuntime::GNUstep, 2)))) {
+ if (isRethrow && (usesSEHExceptions || usesCxxExceptions)) {
// For SEH, ExceptionAsObject may be undef, because the catch handler is
// not passed it for catchalls and so it is not visible to the catch
// funclet. The real thrown object will still be live on the stack at this
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