[turbofan] Skip JSCallReducer and JSNativeContextSpecialization on asm.js.

src/compiler/js-call-reducer.cc

 // Copyright 2015 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/js-call-reducer.h"
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/js-graph.h"
@@ skipping 599 matching lines @@
         jsgraph()->Constant(FeedbackVector::GetIndex(p.feedback().slot()));
     Node* feedback_vector = jsgraph()->HeapConstant(p.feedback().vector());
     node->InsertInput(graph()->zone(), 0, stub_code);
     node->InsertInput(graph()->zone(), 2, stub_arity);
     node->InsertInput(graph()->zone(), 3, slot_index);
     node->InsertInput(graph()->zone(), 4, feedback_vector);
     NodeProperties::ChangeOp(node, common()->Call(desc));
     return Changed(node);
   }
 
-  // Not much we can do if deoptimization support is disabled.
-  if (!(flags() & kDeoptimizationEnabled)) return NoChange();
-
   Handle<Object> feedback(nexus.GetFeedback(), isolate());
   if (feedback->IsAllocationSite()) {
     // Retrieve the Array function from the {node}.
     Node* array_function = jsgraph()->HeapConstant(
         handle(native_context()->array_function(), isolate()));
 
     // Check that the {target} is still the {array_function}.
     Node* check = graph()->NewNode(simplified()->ReferenceEqual(), target,
                                    array_function);
     effect = graph()->NewNode(simplified()->CheckIf(), check, effect, control);
@@ skipping 87 matching lines @@
         NodeProperties::ChangeOp(node, javascript()->CreateArray(arity, site));
         return Changed(node);
       }
     }
 
     // Don't mess with other {node}s that have a constant {target}.
     // TODO(bmeurer): Also support optimizing bound functions and proxies here.
     return NoChange();
   }
 
-  // Not much we can do if deoptimization support is disabled.
-  if (!(flags() & kDeoptimizationEnabled)) return NoChange();
-
   if (!p.feedback().IsValid()) return NoChange();
   CallICNexus nexus(p.feedback().vector(), p.feedback().slot());
   Handle<Object> feedback(nexus.GetFeedback(), isolate());
   if (feedback->IsAllocationSite()) {
     // The feedback is an AllocationSite, which means we have called the
     // Array function and collected transition (and pretenuring) feedback
     // for the resulting arrays.  This has to be kept in sync with the
     // implementation of the CallConstructStub.
     Handle<AllocationSite> site = Handle<AllocationSite>::cast(feedback);
 
@@ skipping 69 matching lines @@
   return jsgraph()->javascript();
 }
 
 SimplifiedOperatorBuilder* JSCallReducer::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8