diff -r 93767e6a2dfd -r 0a43776437b6 src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp
--- a/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Thu Apr 08 10:55:40 2010 +0200
+++ b/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Thu Apr 08 12:13:07 2010 -0700
@@ -1728,9 +1728,13 @@
       ShouldNotReachHere();
     }
   } else if (code == lir_cmp_l2i) {
+#ifdef _LP64
+    __ lcmp(left->as_register_lo(), right->as_register_lo(), dst->as_register());
+#else
     __ lcmp(left->as_register_hi(),  left->as_register_lo(),
             right->as_register_hi(), right->as_register_lo(),
             dst->as_register());
+#endif
   } else {
     ShouldNotReachHere();
   }