Fix accumulated size stats for fixed-size instances.

runtime/vm/class_table.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/class_table.h"
 #include "vm/flags.h"
 #include "vm/freelist.h"
 #include "vm/heap.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
@@ skipping 203 matching lines @@
   // Accumulate allocations.
   accumulated.old_count += recent.old_count - last_reset.old_count;
   accumulated.old_size += recent.old_size - last_reset.old_size;
   last_reset.ResetOld();
   post_gc.ResetOld();
   recent.ResetOld();
 }
 
 
 void ClassHeapStats::UpdateSize(intptr_t instance_size) {
-  ASSERT(instance_size > 0);
-  // For classes with fixed instance size we do not emit code to update
-  // the size statistics. Update them here.
-  pre_gc.old_size = pre_gc.old_count * instance_size;
-  pre_gc.new_size = pre_gc.new_count * instance_size;
-  post_gc.old_size = post_gc.old_count * instance_size;
-  post_gc.new_size = post_gc.new_count * instance_size;
-  recent.new_size = recent.new_count * instance_size;
-  recent.old_size = recent.old_count * instance_size;
+  pre_gc.UpdateSize(instance_size);
+  post_gc.UpdateSize(instance_size);
+  recent.UpdateSize(instance_size);
+  accumulated.UpdateSize(instance_size);
+  last_reset.UpdateSize(instance_size);
 }
 
 
 void ClassHeapStats::ResetAccumulator() {
   // Remember how much was allocated so we can subtract this from the result
   // when printing.
   last_reset.new_count = recent.new_count;
   last_reset.new_size = recent.new_size;
   last_reset.old_count = recent.old_count;
   last_reset.old_size = recent.old_size;
@@ skipping 187 matching lines @@
 
 void ClassTable::UpdateLiveNew(intptr_t cid, intptr_t size) {
   ClassHeapStats* stats = StatsAt(cid);
   ASSERT(stats != NULL);
   ASSERT(size >= 0);
   stats->post_gc.AddNew(size);
 }
 
 
 }  // namespace dart