Revert of Remove SIMD.js from V8.

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 11119 matching lines @@
   return ast_context()->ReturnControl(instr, expr->id());
 }
 
 namespace {
 
 bool IsLiteralCompareStrict(Isolate* isolate, HValue* left, Token::Value op,
                             HValue* right) {
   return op == Token::EQ_STRICT &&
          ((left->IsConstant() &&
            !HConstant::cast(left)->handle(isolate)->IsNumber() &&
+           !HConstant::cast(left)->handle(isolate)->IsSimd128Value() &&
            !HConstant::cast(left)->handle(isolate)->IsString()) ||
           (right->IsConstant() &&
            !HConstant::cast(right)->handle(isolate)->IsNumber() &&
+           !HConstant::cast(right)->handle(isolate)->IsSimd128Value() &&
            !HConstant::cast(right)->handle(isolate)->IsString()));
 }
 
 }  // namespace
 
 void HOptimizedGraphBuilder::VisitCompareOperation(CompareOperation* expr) {
   DCHECK(!HasStackOverflow());
   DCHECK(current_block() != NULL);
   DCHECK(current_block()->HasPredecessor());
 
@@ skipping 1870 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8