[turbofan] Pass deoptimization mode to type feedback specializer.

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/adapters.h"
@@ skipping 528 matching lines @@
     GraphReducer graph_reducer(data->graph(), temp_zone);
     Handle<GlobalObject> global_object = Handle<GlobalObject>::null();
     if (data->info()->has_global_object()) {
       global_object =
           Handle<GlobalObject>(data->info()->global_object(), data->isolate());
     }
     // TODO(titzer): introduce a specialization mode/flags enum to control
     // specializing to the global object here.
     JSTypeFeedbackSpecializer specializer(
         &graph_reducer, data->jsgraph(), data->js_type_feedback(), &oracle,
-        global_object, data->info()->dependencies());
+        global_object, data->info()->is_deoptimization_enabled()
+                           ? JSTypeFeedbackSpecializer::kDeoptimizationEnabled
+                           : JSTypeFeedbackSpecializer::kDeoptimizationDisabled,
+        data->info()->dependencies());
     AddReducer(data, &graph_reducer, &specializer);
     graph_reducer.ReduceGraph();
   }
 };
 
 
 struct TypedLoweringPhase {
   static const char* phase_name() { return "typed lowering"; }
 
   void Run(PipelineData* data, Zone* temp_zone) {
@@ skipping 481 matching lines @@
     if (FLAG_turbo_stress_loop_peeling) {
       Run<StressLoopPeelingPhase>();
       RunPrintAndVerify("Loop peeled", true);
     }
 
     if (info()->is_osr()) {
       Run<OsrDeconstructionPhase>();
       RunPrintAndVerify("OSR deconstruction");
     }
 
-    // TODO(turbofan): Type feedback currently requires deoptimization.
-    if (info()->is_deoptimization_enabled() &&
-        info()->is_type_feedback_enabled()) {
+    if (info()->is_type_feedback_enabled()) {
       Run<JSTypeFeedbackPhase>();
       RunPrintAndVerify("JSType feedback");
     }
 
     // Lower simplified operators and insert changes.
     Run<SimplifiedLoweringPhase>();
     RunPrintAndVerify("Lowered simplified");
 
     // Optimize control flow.
     if (FLAG_turbo_cf_optimization) {
@@ skipping 261 matching lines @@
     tcf << AsC1VRegisterAllocationData("CodeGen",
                                        data->register_allocation_data());
   }
 
   data->DeleteRegisterAllocationZone();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8