[MVT] Bytecode escape analyzer does not support _vbox/_vunbox

# Internal Error (/oracle/valhalla/hotspot/src/share/vm/ci/bcEscapeAnalyzer.cpp:1048), pid=17724, tid=17741
# Error: ShouldNotReachHere()

Current CompileTask:
C2: 7585 59 compiler.valhalla.valuetypes.TestBoundValueTypes::test (7 bytes)

Stack: [0x00007f179eddb000,0x00007f179eedc000], sp=0x00007f179eed60d0, free space=1004k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x174af4c] VMError::report_and_die(int, char const*, char const*, __va_list_tag*, Thread*, unsigned char*, void*, void*, char const*, int, unsigned long)+0x18c
V [libjvm.so+0x174bd1f] VMError::report_and_die(Thread*, char const*, int, char const*, char const*, __va_list_tag*)+0x2f
V [libjvm.so+0xb2d95d] report_vm_error(char const*, int, char const*, char const*, ...)+0xdd
V [libjvm.so+0x706027] BCEscapeAnalyzer::iterate_one_block(ciBlock*, BCEscapeAnalyzer::StateInfo&, GrowableArray<ciBlock*>&)+0x1b57
V [libjvm.so+0x708416] BCEscapeAnalyzer::iterate_blocks(Arena*)+0x676
V [libjvm.so+0x708e95] BCEscapeAnalyzer::do_analysis()+0xa5
V [libjvm.so+0x709185] BCEscapeAnalyzer::compute_escape_info()+0x225
V [libjvm.so+0x709e8b] BCEscapeAnalyzer::BCEscapeAnalyzer(ciMethod*, BCEscapeAnalyzer*)+0x57b
V [libjvm.so+0x926e05] ciMethod::get_bcea()+0xd5
V [libjvm.so+0xc39ebc] ConnectionGraph::process_call_arguments(CallNode*)+0x12c
V [libjvm.so+0xc4635a] ConnectionGraph::compute_escape()+0x6aa
V [libjvm.so+0xc47905] ConnectionGraph::do_analysis(Compile*, PhaseIterGVN*)+0x185
V [libjvm.so+0xa94725] Compile::Optimize()+0x965
V [libjvm.so+0xa9622e] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool, DirectiveSet*)+0x126e
V [libjvm.so+0x893db2] C2Compiler::compile_method(ciEnv*, ciMethod*, int, DirectiveSet*)+0x2e2
V [libjvm.so+0xaa2c3c] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x56c
V [libjvm.so+0xaa3f78] CompileBroker::compiler_thread_loop()+0x478
V [libjvm.so+0x1687c5e] JavaThread::thread_main_inner()+0x22e
V [libjvm.so+0x13ca422] thread_native_entry(Thread*)+0x112
C [libpthread.so.0+0x8184] start_thread+0xc4