Revert "Customized support for feedback on calls to Array." and follow-up fixes.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index b09e1a0530c5c4c9077ae4e01c0ea5c2db6b9135..d523d77856b098ef848ae4668ec389a1366c44c7 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -11205,30 +11205,13 @@ void Code::ClearInlineCaches(Code::Kind* kind) {
 void SharedFunctionInfo::ClearTypeFeedbackInfo() {
   FixedArray* vector = feedback_vector();
   Heap* heap = GetHeap();
-  int length = vector->length();
-
-  for (int i = 0; i < length; i++) {
+  for (int i = 0; i < vector->length(); i++) {
     Object* obj = vector->get(i);
-    if (obj->IsHeapObject()) {
-      InstanceType instance_type =
-          HeapObject::cast(obj)->map()->instance_type();
-      switch (instance_type) {
-        case ALLOCATION_SITE_TYPE:
-          // AllocationSites are not cleared because they do not store
-          // information that leaks.
-          break;
-        case JS_FUNCTION_TYPE:
-          // No need to clear the native context array function.
-          if (obj == JSFunction::cast(obj)->context()->native_context()->
-              get(Context::ARRAY_FUNCTION_INDEX)) {
-            break;
-          }
-          // Fall through...
-
-        default:
-          vector->set(i, TypeFeedbackInfo::RawUninitializedSentinel(heap),
-                      SKIP_WRITE_BARRIER);
-      }
+    if (!obj->IsAllocationSite()) {
+      vector->set(
+          i,
+          TypeFeedbackInfo::RawUninitializedSentinel(heap),
+          SKIP_WRITE_BARRIER);
     }
   }
 }