First simple implementation of for-of in TurboFan.

src/compiler/pipeline.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/compiler/pipeline.h"
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 742 matching lines @@
   if (FLAG_trace_turbo) {
     Run<PrintGraphPhase>(phase);
   }
   if (VerifyGraphs()) {
     Run<VerifyGraphPhase>(untyped);
   }
 }
 
 
 Handle<Code> Pipeline::GenerateCode() {
-  // This list must be kept in sync with DONT_TURBOFAN_NODE in ast.cc.
+  // This list must be kept in sync with DisableTurbofan in ast-numbering.cc.
   if (info()->function()->dont_optimize_reason() == kTryCatchStatement ||
       info()->function()->dont_optimize_reason() == kTryFinallyStatement ||
-      // TODO(turbofan): Make ES6 for-of work and remove this bailout.
-      info()->function()->dont_optimize_reason() == kForOfStatement ||
       // TODO(turbofan): Make super work and remove this bailout.
       info()->function()->dont_optimize_reason() == kSuperReference ||
       // TODO(turbofan): Make class literals work and remove this bailout.
       info()->function()->dont_optimize_reason() == kClassLiteral ||
       // TODO(turbofan): Make OSR work with inner loops and remove this bailout.
       (info()->is_osr() && !FLAG_turbo_osr)) {
     return Handle<Code>::null();
   }
 
   ZonePool zone_pool(isolate());
@@ skipping 319 matching lines @@
 }
 
 
 void Pipeline::TearDown() {
   InstructionOperand::TearDownCaches();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8