Combine typed and pixel arrays.

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index 772684cf95f2b69d1c7b7a15a298f677ec5004fa..c798610a71fcc3a9f8e152392d29bc1c64800e45 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -542,6 +542,9 @@ void Property::RecordTypeFeedback(TypeFeedbackOracle* oracle) {
     }
   } else if (is_monomorphic_) {
     monomorphic_receiver_type_ = oracle->LoadMonomorphicReceiverType(this);
+    if (monomorphic_receiver_type_->has_external_array_elements()) {
+      SetExternalArrayType(oracle->GetKeyedLoadExternalArrayType(this));
+    }
   }
 }
 
@@ -559,6 +562,9 @@ void Assignment::RecordTypeFeedback(TypeFeedbackOracle* oracle) {
   } else if (is_monomorphic_) {
     // Record receiver type for monomorphic keyed loads.
     monomorphic_receiver_type_ = oracle->StoreMonomorphicReceiverType(this);
+    if (monomorphic_receiver_type_->has_external_array_elements()) {
+      SetExternalArrayType(oracle->GetKeyedStoreExternalArrayType(this));
+    }
   }
 }