Eliminate megamorphic lookup in Null.hashCode
R=srdjan@google.com
Review URL: https://codereview.chromium.org/1860793002 .
diff --git a/runtime/lib/null_patch.dart b/runtime/lib/null_patch.dart
index fb117d1..61972d1 100644
--- a/runtime/lib/null_patch.dart
+++ b/runtime/lib/null_patch.dart
@@ -7,13 +7,12 @@
patch class Null {
factory Null._uninstantiable() {
- throw new UnsupportedError(
- "class Null cannot be instantiated");
+ throw new UnsupportedError("class Null cannot be instantiated");
}
- int get _identityHashCode {
- return 2011; // The year Dart was announced and a prime.
- }
+ static const _HASH_CODE = 2011; // The year Dart was announced and a prime.
+ int get _identityHashCode => _HASH_CODE;
+ int get hashCode => _HASH_CODE;
String toString() {
return 'null';
