Move allocation site pretenuring decision making to GC epilog.

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index e0b312067fc5c38013c36d76da9f69beae64c4a4..19caf509ebe31a77a17d96785701b5d0a103c9b1 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -574,6 +574,9 @@ void Heap::GarbageCollectionEpilogue() {
     ZapFromSpace();
   }
 
+  // Process pretenuring feedback and update allocation sites.
+  ProcessPretenuringFeedback();
+
 #ifdef VERIFY_HEAP
   if (FLAG_verify_heap) {
     Verify();
@@ -1617,8 +1620,6 @@ void Heap::Scavenge() {
   IncrementYoungSurvivorsCounter(static_cast<int>(
       (PromotedSpaceSizeOfObjects() - survived_watermark) + new_space_.Size()));
 
-  ProcessPretenuringFeedback();
-
   LOG(isolate_, ResourceEvent("scavenge", "end"));
 
   gc_state_ = NOT_IN_GC;