1 files changed, 11 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/bug1654947.js b/js/src/jit-test/tests/cacheir/bug1654947.js
new file mode 100644
index 0000000000..673e5fd0c2
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/bug1654947.js
@@ -0,0 +1,11 @@
+function f() {
+    let g = x => (x >>> {} >>> x, x);
+    let arr = [0, 0xffff, undefined];
+    for (let i = 0; i < 10; i++) {
+        for (let j = 0; j < 3; j++) {
+            let y = g(arr[j]);
+            assertEq(y, arr[j]);
+        }
+    }
+}
+f();