Revert of Remove SIMD.js from V8.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/ast/ast.h"
 #include "src/base/bits.h"
@@ skipping 1322 matching lines @@
   return NewHeapNumber(FastUI2D(value), IMMUTABLE, pretenure);
 }
 
 Handle<HeapNumber> Factory::NewHeapNumber(MutableMode mode,
                                           PretenureFlag pretenure) {
   CALL_HEAP_FUNCTION(isolate(),
                      isolate()->heap()->AllocateHeapNumber(mode, pretenure),
                      HeapNumber);
 }
 
+#define SIMD128_NEW_DEF(TYPE, Type, type, lane_count, lane_type)               \
+  Handle<Type> Factory::New##Type(lane_type lanes[lane_count],                 \
+                                  PretenureFlag pretenure) {                   \
+    CALL_HEAP_FUNCTION(                                                        \
+        isolate(), isolate()->heap()->Allocate##Type(lanes, pretenure), Type); \
+  }
+SIMD128_TYPES(SIMD128_NEW_DEF)
+#undef SIMD128_NEW_DEF
+
+
 Handle<Object> Factory::NewError(Handle<JSFunction> constructor,
                                  MessageTemplate::Template template_index,
                                  Handle<Object> arg0, Handle<Object> arg1,
                                  Handle<Object> arg2) {
   HandleScope scope(isolate());
   if (isolate()->bootstrapper()->IsActive()) {
     // During bootstrapping we cannot construct error objects.
     return scope.CloseAndEscape(NewStringFromAsciiChecked(
         MessageTemplate::TemplateString(template_index)));
   }
@@ skipping 1512 matching lines @@
     Handle<AccessorInfo> prototype =
         Accessors::FunctionPrototypeInfo(isolate(), rw_attribs);
     Descriptor d = Descriptor::AccessorConstant(
         Handle<Name>(Name::cast(prototype->name())), prototype, rw_attribs);
     map->AppendDescriptor(&d);
   }
 }
 
 }  // namespace internal
 }  // namespace v8