diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug774006.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug774006.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,43 @@
+
+// Test IonMonkey SetElementIC when ran with --ion-eager.
+
+function setelem(o, i, v) {
+    o[i] = v;
+}
+
+var arr = new Array();
+var obj = {};
+
+setelem(arr, "prop0", 2);
+setelem(arr, 0, 2); // invalidate
+setelem(arr, 1, 1); // recompile with setElemIC
+
+setelem(arr, 0, 0); // set known element.
+setelem(arr, 2, 2); // push last element.
+setelem(arr, 4, 4); // test out-of-bounds.
+setelem(arr, "prop0", 0);
+setelem(arr, "prop1", 1);
+
+setelem(obj, "prop0", 2);
+setelem(obj, 0, 2);
+setelem(obj, 1, 1);
+
+setelem(obj, 0, 0);
+setelem(obj, 2, 2);
+setelem(obj, 4, 4);
+setelem(obj, "prop0", 0);
+setelem(obj, "prop1", 1);
+
+assertEq(arr.prop0, 0);
+assertEq(arr.prop1, 1);
+assertEq(arr[0], 0);
+assertEq(arr[1], 1);
+assertEq(arr[2], 2);
+assertEq(arr[4], 4);
+
+assertEq(obj.prop0, 0);
+assertEq(obj.prop1, 1);
+assertEq(obj[0], 0);
+assertEq(obj[1], 1);
+assertEq(obj[2], 2);
+assertEq(obj[4], 4);