Revert of Remove SIMD.js from V8.

src/type-info.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/type-info.h"
 
 #include "src/ast/ast.h"
 #include "src/code-stubs.h"
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
@@ skipping 43 matching lines @@
   Object* obj = feedback_vector_->Get(slot);
 
   // Slots do not embed direct pointers to maps, functions. Instead
   // a WeakCell is always used.
   if (obj->IsWeakCell()) {
     WeakCell* cell = WeakCell::cast(obj);
     if (cell->cleared()) return undefined;
     obj = cell->value();
   }
 
-  if (obj->IsJSFunction() || obj->IsAllocationSite() || obj->IsSymbol()) {
+  if (obj->IsJSFunction() || obj->IsAllocationSite() || obj->IsSymbol() ||
+      obj->IsSimd128Value()) {
     return Handle<Object>(obj, isolate());
   }
 
   return undefined;
 }
 
 InlineCacheState TypeFeedbackOracle::LoadInlineCacheState(FeedbackSlot slot) {
   if (!slot.IsInvalid()) {
     FeedbackSlotKind kind = feedback_vector_->GetKind(slot);
     if (IsLoadICKind(kind)) {
@@ skipping 491 matching lines @@
   // Dictionary has been allocated with sufficient size for all elements.
   DisallowHeapAllocation no_need_to_resize_dictionary;
   HandleScope scope(isolate());
   USE(UnseededNumberDictionary::AtNumberPut(
       dictionary_, IdToKey(ast_id), handle(target, isolate())));
 }
 
 
 }  // namespace internal
 }  // namespace v8