[4/2/14, 6:29:26 AM] Tom Rodriguez: The implicit null check is in the wrong place.
[4/2/14, 6:29:29 AM] Tom Rodriguez: diff -r f83404938588 -r 1b96d1a74514 src/cpu/x86/vm/c1_LIRAssembler_x86.cpp
--- a/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp Tue Apr 01 15:49:13 2014 -0700
+++ b/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp Tue Apr 01 19:45:34 2014 -0700
@@ -800,7 +800,13 @@
        if (UseCompressedOops && !wide) {
          __ movl(as_Address(addr), (int32_t)NULL_WORD);
        } else {
+#ifdef _LP64
+ __ xorptr(r10, r10);
+ null_check_here = code_offset();
+ __ movptr(as_Address(addr), r10);
+#else
          __ movptr(as_Address(addr), NULL_WORD);
+#endif
        }
      } else {
        if (is_literal_address(addr)) {