--- a/hotspot/src/share/vm/opto/library_call.cpp Thu Feb 09 18:01:20 2012 -0800
+++ b/hotspot/src/share/vm/opto/library_call.cpp Fri Feb 10 10:55:15 2012 -0500
@@ -2153,7 +2153,7 @@
//
// if (offset == java_lang_ref_Reference::_reference_offset) {
// if (base != null) {
- // if (klass(base)->reference_type() != REF_NONE)) {
+ // if (instance_of(base, java.lang.ref.Reference)) {
// pre_barrier(_, pre_val, ...);
// }
// }
@@ -2165,8 +2165,6 @@
IdealKit ideal(this);
#define __ ideal.
- const int reference_type_offset = in_bytes(instanceKlass::reference_type_offset());
-
Node* referent_off = __ ConX(java_lang_ref_Reference::referent_offset);
__ if_then(offset, BoolTest::eq, referent_off, unlikely); {