Replace HCheckPrototypeMaps by explicit map checks of constant values.

src/mark-compact.cc

 // Copyright 2012 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 413 matching lines @@
   if (FLAG_verify_native_context_separation) {
     VerifyNativeContextSeparation(heap_);
   }
 #endif
 
 #ifdef VERIFY_HEAP
   if (FLAG_collect_maps && FLAG_weak_embedded_maps_in_optimized_code &&
       heap()->weak_embedded_maps_verification_enabled()) {
     VerifyWeakEmbeddedMapsInOptimizedCode();
   }
-  if (FLAG_collect_maps && FLAG_omit_prototype_checks_for_leaf_maps) {
-    VerifyOmittedPrototypeChecks();
+  if (FLAG_collect_maps && FLAG_omit_map_checks_for_leaf_maps) {
+    VerifyOmittedMapChecks();
   }
 #endif
 
   Finish();
 
   if (marking_parity_ == EVEN_MARKING_PARITY) {
     marking_parity_ = ODD_MARKING_PARITY;
   } else {
     ASSERT(marking_parity_ == ODD_MARKING_PARITY);
     marking_parity_ = EVEN_MARKING_PARITY;
@@ skipping 50 matching lines @@
        obj != NULL;
        obj = code_iterator.Next()) {
     Code* code = Code::cast(obj);
     if (code->kind() != Code::OPTIMIZED_FUNCTION) continue;
     if (WillBeDeoptimized(code)) continue;
     code->VerifyEmbeddedMapsDependency();
   }
 }
 
 
-void MarkCompactCollector::VerifyOmittedPrototypeChecks() {
+void MarkCompactCollector::VerifyOmittedMapChecks() {
   HeapObjectIterator iterator(heap()->map_space());
   for (HeapObject* obj = iterator.Next();
        obj != NULL;
        obj = iterator.Next()) {
     Map* map = Map::cast(obj);
-    map->VerifyOmittedPrototypeChecks();
+    map->VerifyOmittedMapChecks();
   }
 }
 #endif  // VERIFY_HEAP
 
 
 static void ClearMarkbitsInPagedSpace(PagedSpace* space) {
   PageIterator it(space);
 
   while (it.has_next()) {
     Bitmap::Clear(it.next());
@@ skipping 3819 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal