Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/object_service.cc

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/debugger.h"
 #include "vm/disassembler.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
@@ skipping 816 matching lines @@
     cache_entry.AddProperty("count", count);
   }
 }
 
 
 void Code::PrintJSONImpl(JSONStream* stream, bool ref) const {
   JSONObject jsobj(stream);
   AddCommonObjectProperties(&jsobj, "Code", ref);
   jsobj.AddFixedServiceId("code/%" Px64"-%" Px "",
                           compile_timestamp(),
-                          EntryPoint());
+                          PayloadStart());
   const String& qualified_name = String::Handle(QualifiedName());
   const String& vm_name = String::Handle(Name());
   AddNameProperties(&jsobj, qualified_name, vm_name);
   const bool is_stub = IsStubCode() || IsAllocationStubCode();
   if (is_stub) {
     jsobj.AddProperty("kind", "Stub");
   } else {
     jsobj.AddProperty("kind", "Dart");
   }
   jsobj.AddProperty("_optimized", is_optimized());
@@ skipping 13 matching lines @@
     jsobj.AddProperty("function", obj);
   } else {
     // Generate a fake function reference.
     JSONObject func(&jsobj, "function");
     func.AddProperty("type", "@Function");
     func.AddProperty("_kind", "Stub");
     ASSERT(qualified_name.Equals(vm_name));
     func.AddProperty("name", vm_name.ToCString());
     AddNameProperties(&func, vm_name, vm_name);
   }
-  jsobj.AddPropertyF("_startAddress", "%" Px "", EntryPoint());
-  jsobj.AddPropertyF("_endAddress", "%" Px "", EntryPoint() + Size());
+  jsobj.AddPropertyF("_startAddress", "%" Px "", PayloadStart());
+  jsobj.AddPropertyF("_endAddress", "%" Px "", PayloadStart() + Size());
   jsobj.AddProperty("_alive", is_alive());
   const ObjectPool& object_pool = ObjectPool::Handle(GetObjectPool());
   jsobj.AddProperty("_objectPool", object_pool);
   {
     JSONArray jsarr(&jsobj, "_disassembly");
     if (is_alive()) {
       // Only disassemble alive code objects.
       DisassembleToJSONStream formatter(jsarr);
       Disassemble(&formatter);
     }
@@ skipping 714 matching lines @@
   jsobj.AddProperty("mirrorReferent", referent_handle);
 }
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 #endif
 
 }  // namespace dart