More precompiled snapshotting.

runtime/vm/precompiler.cc

 // Copyright (c) 2015, 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/precompiler.h"
 
 #include "vm/compiler.h"
 #include "vm/isolate.h"
 #include "vm/log.h"
 #include "vm/longjump.h"
@@ skipping 421 matching lines @@
 
 void Precompiler::AddField(const Field& field) {
   if (field.is_static()) {
     // Potential const object. Uninitialized field will harmlessly do a
     // redundant add of the Null class.
     const Object& value = Object::Handle(Z, field.StaticValue());
     const Class& cls = Class::Handle(Z, value.clazz());
     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 =
           Function::Handle(Z, field.PrecompiledInitializer());
       AddCalleesOf(function);
     }
   }
 }
 
 
@@ skipping 175 matching lines @@
         for (intptr_t j = 0; j < closures.Length(); j++) {
           function ^= closures.At(j);
           ASSERT(function.HasCode());
         }
       }
     }
   }
 }
 
 }  // namespace dart