Widen the intake valve for 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 "src/base/platform/elapsed-timer.h"
 #include "src/compiler/ast-graph-builder.h"
 #include "src/compiler/change-lowering.h"
 #include "src/compiler/code-generator.h"
@@ skipping 133 matching lines @@
 
 
 static void TraceSchedule(Schedule* schedule) {
   if (!FLAG_trace_turbo) return;
   OFStream os(stdout);
   os << "-- Schedule --------------------------------------\n" << *schedule;
 }
 
 
 Handle<Code> Pipeline::GenerateCode() {
+  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 OSR work and remove this bailout.
+      info()->is_osr()) {
+    return Handle<Code>::null();
+  }
+
   if (FLAG_turbo_stats) isolate()->GetTStatistics()->Initialize(info_);
 
   if (FLAG_trace_turbo) {
     OFStream os(stdout);
     os << "---------------------------------------------------\n"
        << "Begin compiling method "
        << info()->function()->debug_name()->ToCString().get()
        << " using Turbofan" << endl;
   }
 
@@ skipping 237 matching lines @@
 }
 
 
 void Pipeline::TearDown() {
   InstructionOperand::TearDownCaches();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8