1 files changed, 25 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 000000000..47001030f
--- /dev/null
+++ b/js/src/devtools/gc-ubench/benchmarks/propertyTreeSplitting.js
@@ -0,0 +1,25 @@
+window.tests.set('propertyTreeSplitting', (function() {
+var garbage = [];
+var garbageIndex = 0;
+return {
+    description: "use delete to generate Shape garbage",
+    load: (N) => { garbage = new Array(N); },
+    unload: () => { garbage = []; garbageIndex = 0; },
+    makeGarbage: (N) => {
+        function f()
+        {
+            var a1 = eval;
+            delete eval;
+            eval = a1;
+            var a3 = toString;
+            delete toString;
+            toString = a3;
+        }
+        for (var a = 0; a < N; ++a) {
+            garbage[garbageIndex++] = new f();
+            if (garbageIndex == garbage.length)
+                garbageIndex = 0;
+        }
+    }
+};
+})());