Revert "Directly remove slot buffer entries in deoptimized code objects."

test/cctest/test-heap.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 5991 matching lines @@
   size_t counter2 = 2000;
   tracer->SampleAllocation(time2, counter2, counter2);
   size_t throughput = tracer->AllocationThroughputInBytesPerMillisecond(100);
   CHECK_EQ(2 * (counter2 - counter1) / (time2 - time1), throughput);
   int time3 = 1000;
   size_t counter3 = 30000;
   tracer->SampleAllocation(time3, counter3, counter3);
   throughput = tracer->AllocationThroughputInBytesPerMillisecond(100);
   CHECK_EQ(2 * (counter3 - counter1) / (time3 - time1), throughput);
 }
-
-
-TEST(SlotsBufferObjectSlotsRemoval) {
-  CcTest::InitializeVM();
-  v8::HandleScope scope(CcTest::isolate());
-  Isolate* isolate = CcTest::i_isolate();
-  Heap* heap = isolate->heap();
-  Factory* factory = isolate->factory();
-
-  SlotsBuffer* buffer = new SlotsBuffer(NULL);
-  void* fake_object[1];
-
-  Handle<FixedArray> array = factory->NewFixedArray(2, TENURED);
-  CHECK(heap->old_space()->Contains(*array));
-  array->set(0, reinterpret_cast<Object*>(fake_object), SKIP_WRITE_BARRIER);
-
-  // Firstly, let's test the regular slots buffer entry.
-  buffer->Add(HeapObject::RawField(*array, FixedArray::kHeaderSize));
-  DCHECK(reinterpret_cast<void*>(buffer->Get(0)) ==
-         HeapObject::RawField(*array, FixedArray::kHeaderSize));
-  SlotsBuffer::RemoveObjectSlots(CcTest::i_isolate()->heap(), buffer,
-                                 array->address(),
-                                 array->address() + array->Size());
-  DCHECK(reinterpret_cast<void*>(buffer->Get(0)) ==
-         HeapObject::RawField(heap->empty_fixed_array(),
-                              FixedArrayBase::kLengthOffset));
-
-  // Secondly, let's test the typed slots buffer entry.
-  SlotsBuffer::AddTo(NULL, &buffer, SlotsBuffer::EMBEDDED_OBJECT_SLOT,
-                     array->address() + FixedArray::kHeaderSize,
-                     SlotsBuffer::FAIL_ON_OVERFLOW);
-  DCHECK(reinterpret_cast<void*>(buffer->Get(1)) ==
-         reinterpret_cast<Object**>(SlotsBuffer::EMBEDDED_OBJECT_SLOT));
-  DCHECK(reinterpret_cast<void*>(buffer->Get(2)) ==
-         HeapObject::RawField(*array, FixedArray::kHeaderSize));
-  SlotsBuffer::RemoveObjectSlots(CcTest::i_isolate()->heap(), buffer,
-                                 array->address(),
-                                 array->address() + array->Size());
-  DCHECK(reinterpret_cast<void*>(buffer->Get(1)) ==
-         HeapObject::RawField(heap->empty_fixed_array(),
-                              FixedArrayBase::kLengthOffset));
-  DCHECK(reinterpret_cast<void*>(buffer->Get(2)) ==
-         HeapObject::RawField(heap->empty_fixed_array(),
-                              FixedArrayBase::kLengthOffset));
-  delete buffer;
-}