diff -r 3dcd54513db1 -r e84aa2c71241 src/hotspot/share/jvmci/jvmciCompilerToVM.cpp
--- a/src/hotspot/share/jvmci/jvmciCompilerToVM.cpp	Mon Nov 06 12:17:59 2017 +0100
+++ b/src/hotspot/share/jvmci/jvmciCompilerToVM.cpp	Mon Nov 06 12:53:55 2017 +0100
@@ -1039,7 +1039,7 @@
   if (result != JVMCIEnv::ok) {
     assert(cb == NULL, "should be");
   } else {
-    if (!installed_code_handle.is_null()) {
+    if (installed_code_handle.not_null()) {
       assert(installed_code_handle->is_a(InstalledCode::klass()), "wrong type");
       nmethod::invalidate_installed_code(installed_code_handle, CHECK_0);
       {
@@ -1058,13 +1058,6 @@
           HotSpotInstalledCode::set_codeSize(installed_code_handle, cb->code_size());
         }
       }
-      nmethod* nm = cb->as_nmethod_or_null();
-      if (nm != NULL && installed_code_handle->is_scavengable()) {
-        assert(nm->detect_scavenge_root_oops(), "nm should be scavengable if installed_code is scavengable");
-        if (!UseG1GC) {
-          assert(nm->on_scavenge_root_list(), "nm should be on scavengable list");
-        }
-      }
     }
   }
   return result;