Revert r11556 and r11558 to allow roll.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 
 #include <stdlib.h>
 
 #include "v8.h"
 
 #include "execution.h"
 #include "factory.h"
 #include "macro-assembler.h"
 #include "global-handles.h"
@@ skipping 1717 matching lines @@
       "f(1); f(2); f(3);"
       "%OptimizeFunctionOnNextCall(f);"
       "f(4);");
   CHECK_EQ(4, res->ToObject()->GetRealNamedProperty(v8_str("x"))->Int32Value());
 
   Handle<JSObject> o =
       v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
 
   CHECK(HEAP->InNewSpace(*o));
 }
-
-
-static int CountMapTransitions(Map* map) {
-  int result = 0;
-  DescriptorArray* descs = map->instance_descriptors();
-  for (int i = 0; i < descs->number_of_descriptors(); i++) {
-    if (descs->IsTransitionOnly(i)) {
-      result++;
-    }
-  }
-  return result;
-}
-
-
-// Test that map transitions are cleared and maps are collected with
-// incremental marking as well.
-TEST(Regress1465) {
-  i::FLAG_allow_natives_syntax = true;
-  i::FLAG_trace_incremental_marking = true;
-  InitializeVM();
-  v8::HandleScope scope;
-
-  #define TRANSITION_COUNT 256
-  for (int i = 0; i < TRANSITION_COUNT; i++) {
-    EmbeddedVector<char, 64> buffer;
-    OS::SNPrintF(buffer, "var o = new Object; o.prop%d = %d;", i, i);
-    CompileRun(buffer.start());
-  }
-  CompileRun("var root = new Object;");
-  Handle<JSObject> root =
-      v8::Utils::OpenHandle(
-          *v8::Handle<v8::Object>::Cast(
-              v8::Context::GetCurrent()->Global()->Get(v8_str("root"))));
-
-  // Count number of live transitions before marking.
-  int transitions_before = CountMapTransitions(root->map());
-  CompileRun("%DebugPrint(root);");
-  CHECK_EQ(TRANSITION_COUNT, transitions_before);
-
-  // Go through all incremental marking steps in one swoop.
-  IncrementalMarking* marking = HEAP->incremental_marking();
-  CHECK(marking->IsStopped());
-  marking->Start();
-  CHECK(marking->IsMarking());
-  while (!marking->IsComplete()) {
-    marking->Step(MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
-  }
-  CHECK(marking->IsComplete());
-  HEAP->CollectAllGarbage(Heap::kNoGCFlags);
-  CHECK(marking->IsStopped());
-
-  // Count number of live transitions after marking.  Note that one transition
-  // is left, because 'o' still holds an instance of one transition target.
-  int transitions_after = CountMapTransitions(root->map());
-  CompileRun("%DebugPrint(root);");
-  CHECK_EQ(1, transitions_after);
-}