diff -r 8486f0c4b7c3 -r 70aa912cebe5 src/cpu/ppc/vm/globals_ppc.hpp
--- a/src/cpu/ppc/vm/globals_ppc.hpp	Wed Apr 15 11:14:58 2020 +0800
+++ b/src/cpu/ppc/vm/globals_ppc.hpp	Wed Apr 15 11:49:55 2020 +0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2012, 2018 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -33,10 +33,8 @@
 // (see globals.hpp)
 
 define_pd_global(bool, ConvertSleepToYield,   true);
-define_pd_global(bool, ShareVtableStubs,      false); // Improves performance markedly for mtrt and compress.
 define_pd_global(bool, NeedsDeoptSuspend,     false); // Only register window machines need this.
 
-
 define_pd_global(bool, ImplicitNullChecks,    true);  // Generate code for implicit null checks.
 define_pd_global(bool, TrapBasedNullChecks,   true);
 define_pd_global(bool, UncommonNullCast,      true);  // Uncommon-trap NULLs passed to check cast.