[turbofan] Implement OSR for outer loops.

src/objects.cc

 // Copyright 2013 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 <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
@@ skipping 8209 matching lines @@
 
 
 Object* AccessorPair::GetComponent(AccessorComponent component) {
   Object* accessor = get(component);
   return accessor->IsTheHole() ? GetHeap()->undefined_value() : accessor;
 }
 
 
 Handle<DeoptimizationInputData> DeoptimizationInputData::New(
     Isolate* isolate, int deopt_entry_count, PretenureFlag pretenure) {
-  DCHECK(deopt_entry_count > 0);
   return Handle<DeoptimizationInputData>::cast(
       isolate->factory()->NewFixedArray(LengthFor(deopt_entry_count),
                                         pretenure));
 }
 
 
 Handle<DeoptimizationOutputData> DeoptimizationOutputData::New(
     Isolate* isolate,
     int number_of_deopt_points,
     PretenureFlag pretenure) {
@@ skipping 8586 matching lines @@
   Handle<DependentCode> codes =
       DependentCode::Insert(handle(cell->dependent_code(), info->isolate()),
                             DependentCode::kPropertyCellChangedGroup,
                             info->object_wrapper());
   if (*codes != cell->dependent_code()) cell->set_dependent_code(*codes);
   info->dependencies(DependentCode::kPropertyCellChangedGroup)->Add(
       cell, info->zone());
 }
 
 } }  // namespace v8::internal