More precompiled snapshotting.

runtime/vm/precompiler.cc

Index: runtime/vm/precompiler.cc
diff --git a/runtime/vm/precompiler.cc b/runtime/vm/precompiler.cc
index becd99b5a9980eb47d1362c7b734e0d5907d9946..6529aa44595143bdff5743d0a0e3a3f10175c0e1 100644
--- a/runtime/vm/precompiler.cc
+++ b/runtime/vm/precompiler.cc
@@ -439,11 +439,12 @@ void Precompiler::AddField(const Field& field) {
     AddClass(cls);
 
     if (field.has_initializer()) {
-      if (field.PrecompiledInitializer() != Function::null()) return;
+      if (field.HasPrecompiledInitializer()) return;
 
       if (FLAG_trace_precompiler) {
         THR_Print("Precompiling initializer for %s\n", field.ToCString());
       }

[siva, 2015/09/14 20:32:59]

can we assert here that
Object::instructions_snapshot_buffer() is NULL
that we now that the invariant of the initializer field being used for saving
the static initial value is not done when running from precompiled code. 

[rmacnak, 2015/09/15 17:56:42]

Done.

+      field.SetStaticValue(Instance::Handle(field.SavedInitialStaticValue()));
       Compiler::CompileStaticInitializer(field);
 
       const Function& function =