Special code for equality comparison for Smi, allowing null on left or right without calling deop...

runtime/vm/code_generator.cc

Index: runtime/vm/code_generator.cc
===================================================================
--- runtime/vm/code_generator.cc	(revision 915)
+++ runtime/vm/code_generator.cc	(working copy)
@@ -479,8 +479,10 @@
                                        Array::ZoneHandle(ic_data.data()));
   arguments.SetReturn(target_function);
   if (FLAG_trace_ic) {
-    OS::Print("InlineCacheMissHandler 0x%x adding receiver '%s' -> '%s'\n",
-        caller_frame->pc(), receiver.ToCString(), target_function.ToCString());
+    OS::Print("InlineCacheMissHandler call at 0x%x' adding <%s> -> <%s>\n",
+        caller_frame->pc(),
+        Class::Handle(receiver.clazz()).ToCString(),
+        target_function.ToCString());
   }
 }