Reland "Only use FreeSpace objects in the free list"

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 3854 matching lines @@
 #endif
   CompileRun("%OptimizeFunctionOnNextCall(g);"
              "g(false);");
 
   // Finish garbage collection cycle.
   heap->CollectAllGarbage(Heap::kNoGCFlags);
   CHECK(shared1->code()->gc_metadata() == NULL);
 }
 
 
-// Helper function that simulates a fill new-space in the heap.
-static inline void AllocateAllButNBytes(v8::internal::NewSpace* space,
-                                        int extra_bytes) {
-  int space_remaining = static_cast<int>(
-      *space->allocation_limit_address() - *space->allocation_top_address());
-  CHECK(space_remaining >= extra_bytes);
-  int new_linear_size = space_remaining - extra_bytes;
-  v8::internal::AllocationResult allocation =
-      space->AllocateRaw(new_linear_size);
-  v8::internal::FreeListNode* node =
-      v8::internal::FreeListNode::cast(allocation.ToObjectChecked());
-  node->set_size(space->heap(), new_linear_size);
-}
-
-
 TEST(Regress169928) {
   i::FLAG_allow_natives_syntax = true;
   i::FLAG_crankshaft = false;
   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
   Factory* factory = isolate->factory();
   v8::HandleScope scope(CcTest::isolate());
 
   // Some flags turn Scavenge collections into Mark-sweep collections
   // and hence are incompatible with this test case.
@@ skipping 1203 matching lines @@
 #ifdef DEBUG
 TEST(PathTracer) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
 
   v8::Local<v8::Value> result = CompileRun("'abc'");
   Handle<Object> o = v8::Utils::OpenHandle(*result);
   CcTest::i_isolate()->heap()->TracePathToObject(*o);
 }
 #endif  // DEBUG