Add pretenuring support to HAllocateObject.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index 8967ff594c9ada9e8c739416efecfed54009583c..ab4783c3ceb69dfae28384cb07b3274070701f7a 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -2126,6 +2126,32 @@ TEST(OptimizedPretenuringSimpleArrayLiterals) {
 }
 
 
+TEST(OptimizedPretenuringObjectAllocation) {
+  i::FLAG_allow_natives_syntax = true;
+  i::FLAG_pretenure_hallocateobject = true;
+  CcTest::InitializeVM();
+  if (!i::V8::UseCrankshaft() || i::FLAG_always_opt) return;
+  if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
+  v8::HandleScope scope(CcTest::isolate());
+  HEAP->SetNewSpaceHighPromotionModeActive(true);
+
+  AlwaysAllocateScope always_allocate;
+  v8::Local<v8::Value> res = CompileRun(
+      "function g() { this.a = 0; }"
+      "function f() {"
+      "  return new g();"
+      "};"
+      "f(); f(); f();"
+      "%OptimizeFunctionOnNextCall(f);"
+      "f();");
+
+  Handle<JSObject> o =
+      v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
+
+  CHECK(HEAP->InOldPointerSpace(*o));
+}
+
+
 // Test regular array literals allocation.
 TEST(OptimizedAllocationArrayLiterals) {
   i::FLAG_allow_natives_syntax = true;