This debugging option was made a product option. Customers should never use this. There's one test that uses it (jdk/java/lang/instrument/RedefineMethodWithAnnotations.sh).

diff --git a/src/hotspot/share/runtime/globals.hpp b/src/hotspot/share/runtime/globals.hpp
index fc2fd82..24a57d2 100644
--- a/src/hotspot/share/runtime/globals.hpp
+++ b/src/hotspot/share/runtime/globals.hpp
@@ -877,9 +877,9 @@ const intx ObjectAlignmentInBytes = 8;
           "Trace flags for JVMTI functions and events") \
                                                                             \
   /* This option can change an EMCP method into an obsolete method. */ \
- /* This can affect tests that except specific methods to be EMCP. */ \
+ /* This can affect tests that expect specific methods to be EMCP. */ \
   /* This option should be used with caution. */ \
- product(bool, StressLdcRewrite, false, \
+ product(bool, StressLdcRewrite, false, DIAGNOSTIC, \
           "Force ldc -> ldc_w rewrite during RedefineClasses") \
                                                                             \
   product(bool, AllowRedefinitionToAddDeleteMethods, false, \