Revert of Remove SIMD.js from V8.

src/heap/objects-visiting.cc

 // Copyright 2011 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/heap/objects-visiting.h"
 
 #include "src/heap/mark-compact-inl.h"
 #include "src/heap/objects-visiting-inl.h"
 
 namespace v8 {
@@ skipping 162 matching lines @@
 
     case JS_FUNCTION_TYPE:
       return kVisitJSFunction;
 
     case FILLER_TYPE:
       if (instance_size == kPointerSize) return kVisitDataObjectGeneric;
     // Fall through.
     case FOREIGN_TYPE:
     case HEAP_NUMBER_TYPE:
     case MUTABLE_HEAP_NUMBER_TYPE:
+    case SIMD128_VALUE_TYPE:
       return GetVisitorIdForSize(kVisitDataObject, kVisitDataObjectGeneric,
                                  instance_size, has_unboxed_fields);
 
     case FIXED_UINT8_ARRAY_TYPE:
     case FIXED_INT8_ARRAY_TYPE:
     case FIXED_UINT16_ARRAY_TYPE:
     case FIXED_INT16_ARRAY_TYPE:
     case FIXED_UINT32_ARRAY_TYPE:
     case FIXED_INT32_ARRAY_TYPE:
     case FIXED_FLOAT32_ARRAY_TYPE:
@@ skipping 206 matching lines @@
 };
 
 
 template Object* VisitWeakList<Context>(Heap* heap, Object* list,
                                         WeakObjectRetainer* retainer);
 
 template Object* VisitWeakList<AllocationSite>(Heap* heap, Object* list,
                                                WeakObjectRetainer* retainer);
 }  // namespace internal
 }  // namespace v8