Revert of Remove SIMD.js from V8.

src/profiler/heap-snapshot-generator.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/profiler/heap-snapshot-generator.h"
 
 #include <utility>
 
 #include "src/code-stubs.h"
 #include "src/conversions.h"
@@ skipping 136 matching lines @@
     case kString: return "/string/";
     case kCode: return "/code/";
     case kArray: return "/array/";
     case kRegExp: return "/regexp/";
     case kHeapNumber: return "/number/";
     case kNative: return "/native/";
     case kSynthetic: return "/synthetic/";
     case kConsString: return "/concatenated string/";
     case kSlicedString: return "/sliced string/";
     case kSymbol: return "/symbol/";
+    case kSimdValue: return "/simd/";
     default: return "???";
   }
 }
 
 
 // It is very important to keep objects that form a heap snapshot
 // as small as possible.
 namespace {  // Avoid littering the global namespace.
 
 template <size_t ptr_size> struct SnapshotSizeConstants;
@@ skipping 663 matching lines @@
                         : "");
   } else if (object->IsNativeContext()) {
     return AddEntry(object, HeapEntry::kHidden, "system / NativeContext");
   } else if (object->IsContext()) {
     return AddEntry(object, HeapEntry::kObject, "system / Context");
   } else if (object->IsFixedArray() || object->IsFixedDoubleArray() ||
              object->IsByteArray()) {
     return AddEntry(object, HeapEntry::kArray, "");
   } else if (object->IsHeapNumber()) {
     return AddEntry(object, HeapEntry::kHeapNumber, "number");
+  } else if (object->IsSimd128Value()) {
+    return AddEntry(object, HeapEntry::kSimdValue, "simd");
   }
   return AddEntry(object, HeapEntry::kHidden, GetSystemEntryName(object));
 }
 
 
 HeapEntry* V8HeapExplorer::AddEntry(HeapObject* object,
                                     HeapEntry::Type type,
                                     const char* name) {
   return AddEntry(object->address(), type, name, object->Size());
 }
@@ skipping 2278 matching lines @@
   for (int i = 1; i < sorted_strings.length(); ++i) {
     writer_->AddCharacter(',');
     SerializeString(sorted_strings[i]);
     if (writer_->aborted()) return;
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8