Enable --verify-heap in release mode

src/store-buffer.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 354 matching lines @@
   }
 }
 
 
 void StoreBuffer::GCPrologue() {
   ClearFilteringHashSets();
   during_gc_ = true;
 }
 
 
-#ifdef DEBUG
+#ifdef VERIFY_HEAP
 static void DummyScavengePointer(HeapObject** p, HeapObject* o) {
   // Do nothing.
 }
 
 
 void StoreBuffer::VerifyPointers(PagedSpace* space,
                                  RegionCallback region_callback) {
   PageIterator it(space);
 
   while (it.has_next()) {
@@ skipping 22 matching lines @@
         heap_->InNewSpace(*slot);
         slot_address += kPointerSize;
       }
     }
   }
 }
 #endif
 
 
 void StoreBuffer::Verify() {
-#ifdef DEBUG
+#ifdef VERIFY_HEAP
   VerifyPointers(heap_->old_pointer_space(),
                  &StoreBuffer::FindPointersToNewSpaceInRegion);
   VerifyPointers(heap_->map_space(),
                  &StoreBuffer::FindPointersToNewSpaceInMapsRegion);
   VerifyPointers(heap_->lo_space());
 #endif
 }
 
 
 void StoreBuffer::GCEpilogue() {
   during_gc_ = false;
+#ifdef VERIFY_HEAP
   if (FLAG_verify_heap) {
     Verify();
   }
+#endif
 }
 
 
 void StoreBuffer::FindPointersToNewSpaceInRegion(
     Address start, Address end, ObjectSlotCallback slot_callback) {
   for (Address slot_address = start;
        slot_address < end;
        slot_address += kPointerSize) {
     Object** slot = reinterpret_cast<Object**>(slot_address);
     if (heap_->InNewSpace(*slot)) {
@@ skipping 267 matching lines @@
   heap_->isolate()->counters()->store_buffer_compactions()->Increment();
   CheckForFullBuffer();
 }
 
 
 void StoreBuffer::CheckForFullBuffer() {
   EnsureSpace(kStoreBufferSize * 2);
 }
 
 } }  // namespace v8::internal