8267972: Inline cache cleaning is not monotonic

Reviewed-by: vlivanov, kvn

Author: fisk

src/hotspot/share/code/compiledIC.cpp

@@ -515,7 +515,7 @@ void CompiledIC::compute_monomorphic_entry(const methodHandle& method,
   CompiledMethod* method_code = method->code();
 
   address entry = NULL;
-  if (method_code != NULL && method_code->is_in_use()) {
+  if (method_code != NULL && method_code->is_in_use() && !method_code->is_unloading()) {
     assert(method_code->is_compiled(), "must be compiled");
     // Call to compiled code
     //
@@ -641,7 +641,7 @@ void CompiledStaticCall::set(const StaticCallInfo& info) {
 void CompiledStaticCall::compute_entry(const methodHandle& m, bool caller_is_nmethod, StaticCallInfo& info) {
   CompiledMethod* m_code = m->code();
   info._callee = m;
-  if (m_code != NULL && m_code->is_in_use()) {
+  if (m_code != NULL && m_code->is_in_use() && !m_code->is_unloading()) {
     info._to_interpreter = false;
     info._entry  = m_code->verified_entry_point();
   } else {