Remove saving/restoring of the context at function entry.

runtime/vm/object.cc

 // Copyright (c) 2012, 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/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 10767 matching lines @@
   switch (kind) {
     case RawLocalVarDescriptors::kStackVar:
       return "StackVar";
       break;
     case RawLocalVarDescriptors::kContextVar:
       return "ContextVar";
       break;
     case RawLocalVarDescriptors::kContextLevel:
       return "ContextLevel";
       break;
-    case RawLocalVarDescriptors::kSavedEntryContext:
-      return "SavedEntryCtx";
-      break;
     case RawLocalVarDescriptors::kSavedCurrentContext:
       return "CurrentCtx";
       break;
     default:
       UNREACHABLE();
       return "Unknown";
   }
 }
 
 
@@ skipping 99 matching lines @@
 
 
 const char* LocalVarDescriptors::KindToStr(intptr_t kind) {
   switch (kind) {
     case RawLocalVarDescriptors::kStackVar:
       return "StackVar";
     case RawLocalVarDescriptors::kContextVar:
       return "ContextVar";
     case RawLocalVarDescriptors::kContextLevel:
       return "ContextLevel";
-    case RawLocalVarDescriptors::kSavedEntryContext:
-      return "SavedEntryContext";
     case RawLocalVarDescriptors::kSavedCurrentContext:
       return "SavedCurrentContext";
     default:
       UNIMPLEMENTED();
       return NULL;
   }
 }
 
 RawLocalVarDescriptors* LocalVarDescriptors::New(intptr_t num_variables) {
   ASSERT(Object::var_descriptors_class() != Class::null());
@@ skipping 9386 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart