Combine typed and pixel arrays.

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index 99a84a1c1eb54aa19ff620770776c81d3ed21f38..7cfc3dadf8f0072ed35fbe1dcf7b893890492260 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));
+    }
   }
 }