--- old/src/hotspot/share/jvmci/jvmciEnv.cpp	2019-09-25 09:46:48.135919564 -0400
+++ new/src/hotspot/share/jvmci/jvmciEnv.cpp	2019-09-25 09:46:47.879919573 -0400
@@ -44,6 +44,7 @@
   _failure_reason_on_C_heap(false) {
   // Get Jvmti capabilities under lock to get consistent values.
   MutexLocker mu(JvmtiThreadState_lock);
+  _jvmti_redefinition_count             = JvmtiExport::redefinition_count();
   _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint() ? 1 : 0;
   _jvmti_can_access_local_variables     = JvmtiExport::can_access_local_variables() ? 1 : 0;
   _jvmti_can_post_on_exceptions         = JvmtiExport::can_post_on_exceptions() ? 1 : 0;
@@ -51,6 +52,10 @@
 }
 
 bool JVMCICompileState::jvmti_state_changed() const {
+  // Some classes were redefined
+  if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
+    return true;
+  }
   if (!jvmti_can_access_local_variables() &&
       JvmtiExport::can_access_local_variables()) {
     return true;