1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/devtools/gc-ubench/benchmarks/propertyTreeSplitting.js b/js/src/devtools/gc-ubench/benchmarks/propertyTreeSplitting.js
new file mode 100644
index 0000000000..9fc62b29e2
--- /dev/null
+++ b/js/src/devtools/gc-ubench/benchmarks/propertyTreeSplitting.js
@@ -0,0 +1,24 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+tests.set(
+  "propertyTreeSplitting",
+  (function() {
+    var garbage = [];
+    var garbageIndex = 0;
+    var obj = {};
+    return {
+      description: "use delete to generate Shape garbage (piles are unused)",
+      load: N => {},
+      unload: () => {},
+      makeGarbage: N => {
+        for (var a = 0; a < N; ++a) {
+          obj.x = 1;
+          obj.y = 2;
+          delete obj.x;
+        }
+      },
+    };
+  })()
+);