1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/getelem-undefined-null.js b/js/src/jit-test/tests/cacheir/getelem-undefined-null.js
new file mode 100644
index 0000000000..0cf84155cc
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/getelem-undefined-null.js
@@ -0,0 +1,52 @@
+function exists() {
+  var a = {'null': 1, 'undefined': 2};
+  for (var i = 0; i < 100; i++) {
+    assertEq(a[null], 1);
+    assertEq(a[undefined], 2);
+  }
+}
+
+function missing() {
+  var a = {};
+  for (var i = 0; i < 100; i++) {
+    assertEq(a[null], undefined);
+    assertEq(a[undefined], undefined);
+  }
+}
+
+function getter() {
+  var a = {
+    get null() {
+      return 1;
+    },
+    get undefined() {
+      return 2;
+    }
+  }
+  for (var i = 0; i < 100; i++) {
+    assertEq(a[null], 1);
+    assertEq(a[undefined], 2);
+  }
+}
+
+function primitive() {
+  var v = true;
+  for (var i = 0; i < 100; i++) {
+    assertEq(v[null], undefined);
+    assertEq(v[undefined], undefined);
+  }
+}
+
+function mixed() {
+  var a = {'null': 'null', 'undefined': 'undefined'};
+  for (var i = 0; i < 100; i++) {
+    var v = a[i % 2 ? null : undefined]
+    assertEq(a[v], i % 2 ? 'null' : 'undefined');
+  }
+}
+
+exists();
+missing()
+getter();
+primitive();
+mixed();