--- a/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Fri Apr 12 06:19:35 2013 +0200
+++ b/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Fri Apr 12 17:22:54 2013 +0200
@@ -1670,10 +1670,16 @@
   verify_oop_args(masm, method, sig_bt, regs);
   vmIntrinsics::ID iid = method->intrinsic_id();
 
+#ifdef GRAAL
   if (iid == vmIntrinsics::_CompilerToVMImpl_executeCompiledMethod) {
+    // We are called from compiled code here. The three object arguments
+    // are already in the correct registers (j_rarg0, jrarg1, jrarg2). The
+    // fourth argument (j_rarg3) is a raw pointer to the nmethod. Make a tail
+    // call to its verified entry point.
     __ jmp(Address(j_rarg3, nmethod::verified_entry_point_offset()));
     return;
   }
+#endif
 
   // Now write the args into the outgoing interpreter space
   bool     has_receiver   = false;