Inconsistent scalar replacement debug info at safepoints

# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/workspace/open/src/hotspot/share/opto/node.hpp:391), pid=2560545, tid=2564754
# assert(i < _max) failed: oob: i=16, _max=16

Current CompileTask:
C2: 545601 41515 ! 4 jdk.proxy2.$Proxy26::doSomething (32 bytes)

Stack: [0x00007fc1944f1000,0x00007fc1945f2000], sp=0x00007fc1945ecb00, free space=1006k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x159325f] PhaseOutput::FillLocArray(int, MachSafePointNode*, Node*, GrowableArray<ScopeValue*>*, GrowableArray<ScopeValue*>*)+0xd6f
V [libjvm.so+0x1593cd9] PhaseOutput::Process_OopMap_Node(MachNode*, int)+0x3c9
V [libjvm.so+0x1596f4f] PhaseOutput::fill_buffer(CodeBuffer*, unsigned int*)+0xebf
V [libjvm.so+0x9f7097] Compile::Code_Gen()+0x427
V [libjvm.so+0xa03428] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, bool, DirectiveSet*)+0x1668
V [libjvm.so+0x81ded6] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x646
V [libjvm.so+0xa13799] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xd09
V [libjvm.so+0xa14438] CompileBroker::compiler_thread_loop()+0x518
V [libjvm.so+0x188962c] JavaThread::thread_main_inner()+0x27c
V [libjvm.so+0x188fbe0] Thread::call_run()+0x100
V [libjvm.so+0x156f524] thread_native_entry(Thread*)+0x104

Different but related failure mode:


# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/workspace/open/src/hotspot/share/opto/output.cpp:803), pid=328000, tid=328013
# assert(local) failed: use _top instead of null
#

Current CompileTask:
C2: 602 2 b 4 Test::test (9 bytes)

Stack: [0x00007faca9d37000,0x00007faca9e38000], sp=0x00007faca9e32e00, free space=1007k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x158e3cc] PhaseOutput::FillLocArray(int, MachSafePointNode*, Node*, GrowableArray<ScopeValue*>*, GrowableArray<ScopeValue*>*)+0x3fc
V [libjvm.so+0x158e87e] PhaseOutput::FillLocArray(int, MachSafePointNode*, Node*, GrowableArray<ScopeValue*>*, GrowableArray<ScopeValue*>*)+0x8ae
V [libjvm.so+0x158f7d9] PhaseOutput::Process_OopMap_Node(MachNode*, int)+0x3c9
V [libjvm.so+0x1592a2c] PhaseOutput::fill_buffer(CodeBuffer*, unsigned int*)+0xe9c
V [libjvm.so+0x9fc427] Compile::Code_Gen()+0x427
V [libjvm.so+0xa08512] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, bool, DirectiveSet*)+0x1652
V [libjvm.so+0x81cd16] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x646
V [libjvm.so+0xa186a1] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xd31
V [libjvm.so+0xa193d8] CompileBroker::compiler_thread_loop()+0x598
V [libjvm.so+0x1886bec] JavaThread::thread_main_inner()+0x27c
V [libjvm.so+0x188d1e0] Thread::call_run()+0x100
V [libjvm.so+0x156b3d4] thread_native_entry(Thread*)+0x104