[stubs] Port StoreTransitionStub and ElementsTransitionAndStoreStub to TurboFan.

src/crankshaft/hydrogen.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 "src/crankshaft/hydrogen.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
@@ skipping 1627 matching lines @@
   cow_checker.Else();
 
   environment()->Push(elements);
 
   cow_checker.End();
 
   return environment()->Pop();
 }
 
 
-void HGraphBuilder::BuildTransitionElementsKind(HValue* object,
-                                                HValue* map,
-                                                ElementsKind from_kind,
-                                                ElementsKind to_kind,
-                                                bool is_jsarray) {
-  DCHECK(!IsFastHoleyElementsKind(from_kind) ||
-         IsFastHoleyElementsKind(to_kind));
-
-  if (AllocationSite::GetMode(from_kind, to_kind) == TRACK_ALLOCATION_SITE) {
-    Add<HTrapAllocationMemento>(object);
-  }
-
-  if (!IsSimpleMapChangeTransition(from_kind, to_kind)) {
-    HInstruction* elements = AddLoadElements(object);
-
-    HInstruction* empty_fixed_array = Add<HConstant>(
-        isolate()->factory()->empty_fixed_array());
-
-    IfBuilder if_builder(this);
-
-    if_builder.IfNot<HCompareObjectEqAndBranch>(elements, empty_fixed_array);
-
-    if_builder.Then();
-
-    HInstruction* elements_length = AddLoadFixedArrayLength(elements);
-
-    HInstruction* array_length =
-        is_jsarray
-            ? Add<HLoadNamedField>(object, nullptr,
-                                   HObjectAccess::ForArrayLength(from_kind))
-            : elements_length;
-
-    BuildGrowElementsCapacity(object, elements, from_kind, to_kind,
-                              array_length, elements_length);
-
-    if_builder.End();
-  }
-
-  Add<HStoreNamedField>(object, HObjectAccess::ForMap(), map);
-}
-
-
 void HGraphBuilder::BuildJSObjectCheck(HValue* receiver,
                                        int bit_field_mask) {
   // Check that the object isn't a smi.
   Add<HCheckHeapObject>(receiver);
 
   // Get the map of the receiver.
   HValue* map =
       Add<HLoadNamedField>(receiver, nullptr, HObjectAccess::ForMap());
 
   // Check the instance type and if an access check is needed, this can be
@@ skipping 11685 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8