diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/inlining/array-push.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/inlining/array-push.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+function test1() {
+    function push(arr, x) {
+        return arr.push(x);
+    }
+    var arr = [];
+    for (var i=0; i<100; i++) {
+        assertEq(push(arr, i), i + 1);
+    }
+}
+test1();
+
+function test2() {
+    var arr;
+    for (var i=0; i<60; i++) {
+        arr = [];
+        assertEq(arr.push(3.3), 1);
+        assertEq(arr.push(undefined), 2);
+        assertEq(arr.push(true), 3);
+        assertEq(arr.push(Math), 4);
+        assertEq(arr.toString(), "3.3,,true,[object Math]");
+    }
+}
+test2();
+
+function test3() {
+    function push(arr, v) {
+        arr.push(v);
+    }
+    for (var i=0; i<60; i++) {
+        var arr = [];
+        push(arr, null);
+        push(arr, 3.14);
+        push(arr, {});
+        assertEq(arr.toString(), ",3.14,[object Object]");
+    }
+}
+test3();