VectorICs: Remove special code to increment call counts by two.

src/type-feedback-vector.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/type-feedback-vector.h"
 
 #include "src/code-stubs.h"
 #include "src/ic/ic.h"
 #include "src/ic/ic-state.h"
 #include "src/objects.h"
@@ skipping 505 matching lines @@
   }
 
   CHECK(feedback == *TypeFeedbackVector::UninitializedSentinel(isolate));
   return UNINITIALIZED;
 }
 
 
 int CallICNexus::ExtractCallCount() {
   Object* call_count = GetFeedbackExtra();
   if (call_count->IsSmi()) {
-    int value = Smi::cast(call_count)->value() / 2;
+    int value = Smi::cast(call_count)->value();
     return value;
   }
   return -1;
 }
 
 
 void CallICNexus::Clear(Code* host) { CallIC::Clear(GetIsolate(), host, this); }
 
 
 void CallICNexus::ConfigureMonomorphicArray() {
   Object* feedback = GetFeedback();
   if (!feedback->IsAllocationSite()) {
     Handle<AllocationSite> new_site =
         GetIsolate()->factory()->NewAllocationSite();
     SetFeedback(*new_site);
   }
-  SetFeedbackExtra(Smi::FromInt(kCallCountIncrement), SKIP_WRITE_BARRIER);
+  SetFeedbackExtra(Smi::FromInt(1), SKIP_WRITE_BARRIER);
 }
 
 
 void CallICNexus::ConfigureMonomorphic(Handle<JSFunction> function) {
   Handle<WeakCell> new_cell = GetIsolate()->factory()->NewWeakCell(function);
   SetFeedback(*new_cell);
-  SetFeedbackExtra(Smi::FromInt(kCallCountIncrement), SKIP_WRITE_BARRIER);
+  SetFeedbackExtra(Smi::FromInt(1), SKIP_WRITE_BARRIER);
 }
 
 
 void CallICNexus::ConfigureMegamorphic() {
   FeedbackNexus::ConfigureMegamorphic();
 }
 
 
 void CallICNexus::ConfigureMegamorphic(int call_count) {
   SetFeedback(*TypeFeedbackVector::MegamorphicSentinel(GetIsolate()),
               SKIP_WRITE_BARRIER);
-  SetFeedbackExtra(Smi::FromInt(call_count * kCallCountIncrement),
-                   SKIP_WRITE_BARRIER);
+  SetFeedbackExtra(Smi::FromInt(call_count), SKIP_WRITE_BARRIER);
 }
 
 
 void LoadICNexus::ConfigureMonomorphic(Handle<Map> receiver_map,
                                        Handle<Code> handler) {
   Handle<WeakCell> cell = Map::WeakCellForMap(receiver_map);
   SetFeedback(*cell);
   SetFeedbackExtra(*handler);
 }
 
@@ skipping 314 matching lines @@
 
 IcCheckType KeyedStoreICNexus::GetKeyType() const {
   Object* feedback = GetFeedback();
   if (feedback == *TypeFeedbackVector::MegamorphicSentinel(GetIsolate())) {
     return static_cast<IcCheckType>(Smi::cast(GetFeedbackExtra())->value());
   }
   return IsPropertyNameFeedback(feedback) ? PROPERTY : ELEMENT;
 }
 }  // namespace internal
 }  // namespace v8