[heap] Simplify adjusting of live bytes.

src/heap/mark-compact.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/heap/mark-compact.h"
 
 #include "src/base/atomicops.h"
 #include "src/base/bits.h"
 #include "src/base/sys-info.h"
 #include "src/code-stubs.h"
@@ skipping 2560 matching lines @@
   if (transition_index == num_transitions) {
     DCHECK(!descriptors_owner_died);
     return false;
   }
   // Note that we never eliminate a transition array, though we might right-trim
   // such that number_of_transitions() == 0. If this assumption changes,
   // TransitionArray::Insert() will need to deal with the case that a transition
   // array disappeared during GC.
   int trim = TransitionArray::Capacity(transitions) - transition_index;
   if (trim > 0) {
-    heap_->RightTrimFixedArray<Heap::SEQUENTIAL_TO_SWEEPER>(
-        transitions, trim * TransitionArray::kTransitionSize);
+    heap_->RightTrimFixedArray(transitions,
+                               trim * TransitionArray::kTransitionSize);
     transitions->SetNumberOfTransitions(transition_index);
   }
   return descriptors_owner_died;
 }
 
 
 void MarkCompactCollector::TrimDescriptorArray(Map* map,
                                                DescriptorArray* descriptors) {
   int number_of_own_descriptors = map->NumberOfOwnDescriptors();
   if (number_of_own_descriptors == 0) {
     DCHECK(descriptors == heap_->empty_descriptor_array());
     return;
   }
 
   int number_of_descriptors = descriptors->number_of_descriptors_storage();
   int to_trim = number_of_descriptors - number_of_own_descriptors;
   if (to_trim > 0) {
-    heap_->RightTrimFixedArray<Heap::SEQUENTIAL_TO_SWEEPER>(
-        descriptors, to_trim * DescriptorArray::kDescriptorSize);
+    heap_->RightTrimFixedArray(descriptors,
+                               to_trim * DescriptorArray::kDescriptorSize);
     descriptors->SetNumberOfDescriptors(number_of_own_descriptors);
 
     if (descriptors->HasEnumCache()) TrimEnumCache(map, descriptors);
     descriptors->Sort();
 
     if (FLAG_unbox_double_fields) {
       LayoutDescriptor* layout_descriptor = map->layout_descriptor();
       layout_descriptor = layout_descriptor->Trim(heap_, map, descriptors,
                                                   number_of_own_descriptors);
       SLOW_DCHECK(layout_descriptor->IsConsistentWithMap(map, true));
@@ skipping 10 matching lines @@
   if (live_enum == kInvalidEnumCacheSentinel) {
     live_enum =
         map->NumberOfDescribedProperties(OWN_DESCRIPTORS, ENUMERABLE_STRINGS);
   }
   if (live_enum == 0) return descriptors->ClearEnumCache();
 
   FixedArray* enum_cache = descriptors->GetEnumCache();
 
   int to_trim = enum_cache->length() - live_enum;
   if (to_trim <= 0) return;
-  heap_->RightTrimFixedArray<Heap::SEQUENTIAL_TO_SWEEPER>(
-      descriptors->GetEnumCache(), to_trim);
+  heap_->RightTrimFixedArray(descriptors->GetEnumCache(), to_trim);
 
   if (!descriptors->HasEnumIndicesCache()) return;
   FixedArray* enum_indices_cache = descriptors->GetEnumIndicesCache();
-  heap_->RightTrimFixedArray<Heap::SEQUENTIAL_TO_SWEEPER>(enum_indices_cache,
-                                                          to_trim);
+  heap_->RightTrimFixedArray(enum_indices_cache, to_trim);
 }
 
 
 void MarkCompactCollector::ProcessWeakCollections() {
   Object* weak_collection_obj = heap()->encountered_weak_collections();
   while (weak_collection_obj != Smi::kZero) {
     JSWeakCollection* weak_collection =
         reinterpret_cast<JSWeakCollection*>(weak_collection_obj);
     DCHECK(MarkCompactCollector::IsMarked(weak_collection));
     if (weak_collection->table()->IsHashTable()) {
@@ skipping 1286 matching lines @@
       // The target is always in old space, we don't have to record the slot in
       // the old-to-new remembered set.
       DCHECK(!heap()->InNewSpace(target));
       RecordRelocSlot(host, &rinfo, target);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8