[turbofan] Generalize AllocateStub to allow old space allocation.

src/code-stubs-hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-stubs.h"
 
 #include "src/bailout-reason.h"
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/field-index.h"
@@ skipping 1376 matching lines @@
                               casted_stub()->is_js_array());
 
   return GetParameter(0);
 }
 
 
 Handle<Code> TransitionElementsKindStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
-
 template <>
-HValue* CodeStubGraphBuilder<AllocateInNewSpaceStub>::BuildCodeStub() {
-  HValue* result = Add<HAllocate>(GetParameter(0), HType::Tagged(), NOT_TENURED,
-                                  JS_OBJECT_TYPE);
+HValue* CodeStubGraphBuilder<AllocateStub>::BuildCodeStub() {
+  HValue* result =
+      Add<HAllocate>(GetParameter(0), HType::Tagged(),
+                     casted_stub()->pretenure_flag(), JS_OBJECT_TYPE);
   return result;
 }
 
-
-Handle<Code> AllocateInNewSpaceStub::GenerateCode() {
-  return DoGenerateCode(this);
-}
-
+Handle<Code> AllocateStub::GenerateCode() { return DoGenerateCode(this); }
 
 HValue* CodeStubGraphBuilderBase::BuildArrayConstructor(
     ElementsKind kind,
     AllocationSiteOverrideMode override_mode,
     ArgumentClass argument_class) {
   HValue* constructor = GetParameter(ArrayConstructorStubBase::kConstructor);
   HValue* alloc_site = GetParameter(ArrayConstructorStubBase::kAllocationSite);
   JSArrayBuilder array_builder(this, kind, alloc_site, constructor,
                                override_mode);
   HValue* result = NULL;
@@ skipping 1154 matching lines @@
   return Pop();
 }
 
 
 Handle<Code> KeyedLoadGenericStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 }  // namespace internal
 }  // namespace v8