Revert "Save and restore feedback from JIT."

runtime/vm/program_visitor.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/program_visitor.h"
-
-#include "vm/object.h"
-#include "vm/object_store.h"
-
-namespace dart {
-
-void ProgramVisitor::VisitClasses(ClassVisitor* visitor) {
-  Thread* thread = Thread::Current();
-  Isolate* isolate = thread->isolate();
-  Zone* zone = thread->zone();
-  GrowableObjectArray& libraries =
-      GrowableObjectArray::Handle(zone, isolate->object_store()->libraries());
-  Library& lib = Library::Handle(zone);
-  Class& cls = Class::Handle(zone);
-
-  for (intptr_t i = 0; i < libraries.Length(); i++) {
-    lib ^= libraries.At(i);
-    ClassDictionaryIterator it(lib, ClassDictionaryIterator::kIteratePrivate);
-    while (it.HasNext()) {
-      cls = it.GetNextClass();
-      if (cls.IsDynamicClass()) {
-        continue;  // class 'dynamic' is in the read-only VM isolate.
-      }
-      visitor->Visit(cls);
-    }
-  }
-}
-
-
-void ProgramVisitor::VisitFunctions(FunctionVisitor* visitor) {
-  Thread* thread = Thread::Current();
-  Isolate* isolate = thread->isolate();
-  Zone* zone = thread->zone();
-  GrowableObjectArray& libraries =
-      GrowableObjectArray::Handle(zone, isolate->object_store()->libraries());
-  Library& lib = Library::Handle(zone);
-  Class& cls = Class::Handle(zone);
-  Array& functions = Array::Handle(zone);
-  Array& fields = Array::Handle(zone);
-  Field& field = Field::Handle(zone);
-  Object& object = Object::Handle(zone);
-  Function& function = Function::Handle(zone);
-  GrowableObjectArray& closures = GrowableObjectArray::Handle(zone);
-
-  for (intptr_t i = 0; i < libraries.Length(); i++) {
-    lib ^= libraries.At(i);
-    ClassDictionaryIterator it(lib, ClassDictionaryIterator::kIteratePrivate);
-    while (it.HasNext()) {
-      cls = it.GetNextClass();
-      if (cls.IsDynamicClass()) {
-        continue;  // class 'dynamic' is in the read-only VM isolate.
-      }
-
-      functions = cls.functions();
-      for (intptr_t j = 0; j < functions.Length(); j++) {
-        function ^= functions.At(j);
-        visitor->Visit(function);
-        if (function.HasImplicitClosureFunction()) {
-          function = function.ImplicitClosureFunction();
-          visitor->Visit(function);
-        }
-      }
-
-      functions = cls.invocation_dispatcher_cache();
-      for (intptr_t j = 0; j < functions.Length(); j++) {
-        object = functions.At(j);
-        if (object.IsFunction()) {
-          function ^= functions.At(j);
-          visitor->Visit(function);
-        }
-      }
-      fields = cls.fields();
-      for (intptr_t j = 0; j < fields.Length(); j++) {
-        field ^= fields.At(j);
-        if (field.is_static() && field.HasPrecompiledInitializer()) {
-          function ^= field.PrecompiledInitializer();
-          visitor->Visit(function);
-        }
-      }
-    }
-  }
-  closures = isolate->object_store()->closure_functions();
-  for (intptr_t j = 0; j < closures.Length(); j++) {
-    function ^= closures.At(j);
-    visitor->Visit(function);
-    ASSERT(!function.HasImplicitClosureFunction());
-  }
-}
-
-}  // namespace dart