[libc++abi][test][VE] Add UNSUPPORTED to pass tests on VE

[kaz7]

Summary

Add UNSUPPORTED to pass tests on VE. VE uses SjLj libunwind, so
_Unwind_Backtrace and _Unwind_ForcedUnwind are not implemented.

[MaskRay]

libcxxabi/test/forced_unwind2.pass.cpp

13

[kaz7]

Update comments.

libcxxabi/test/forced_unwind2.pass.cpp

13

Thanks!

[kaz7]

ping. Is it possible to get approval from libc++abi group? Thanks!

libcxxabi/test/backtrace_test.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: no-exceptions
 
+// VE supports only SjLj libunwind.  It doesn't have _Unwind_Backtrace
+// UNSUPPORTED: target={{ve-.*}}
+
 #include <assert.h>
 #include <stddef.h>
 #include <unwind.h>
 
 extern "C" _Unwind_Reason_Code
 trace_function(struct _Unwind_Context*, void* ntraced) {
   (*reinterpret_cast<size_t*>(ntraced))++;
   // We should never have a call stack this deep...

libcxxabi/test/forced_unwind1.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // _Unwind_ForcedUnwind raised exception can be caught by catch (...) and be
 // rethrown. If not rethrown, exception_cleanup will be called.
 
 // UNSUPPORTED: no-exceptions, c++03
 
+// VE supports only SjLj libunwind.  It doesn't have _Unwind_ForcedUnwind.
+// UNSUPPORTED: target={{ve-.*}}
+
 // These tests fail on previously released dylibs, investigation needed.
 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx{{11.0|12.0}}
 
 #include <stdlib.h>
 #include <string.h>
 #include <unwind.h>
 #include <tuple>

libcxxabi/test/forced_unwind2.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // Forced unwinding causes std::terminate when going through noexcept.
 
 // UNSUPPORTED: no-exceptions, c++03
 
+// VE supports only SjLj libunwind.  It doesn't have _Unwind_ForcedUnwind.
+// UNSUPPORTED: target={{ve-.*}}
+
 // These tests fail on previously released dylibs, investigation needed.
 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx{{11.0|12.0}}
 
 #include <exception>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>

libcxxabi/test/forced_unwind3.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // Let's run ForcedUnwind until it reaches end of the stack, this test simulates
 // what pthread_cancel does.
 
 // UNSUPPORTED: c++03
 // UNSUPPORTED: no-threads
 // UNSUPPORTED: no-exceptions
 
+// VE supports only SjLj libunwind.  It doesn't have _Unwind_ForcedUnwind.
+// UNSUPPORTED: target={{ve-.*}}
+
 #include <assert.h>
 #include <exception>
 #include <stdlib.h>
 #include <string.h>
 #include <unwind.h>
 #include <thread>
 #include <tuple>
 #include <__cxxabi_config.h>