diff --git a/test/mjsunit/regress/regress-791958.js b/test/mjsunit/regress/regress-791958.js
new file mode 100644
index 0000000000..443ef6e359
--- /dev/null
+++ b/test/mjsunit/regress/regress-791958.js
@@ -0,0 +1,15 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+obj = {m: print};
+function foo() {
+  for (var x = -536870912; x != -536870903; ++x) {
+    obj.m(-x >= 1000000 ? x % 1000000 : y);
+  }
+}
+foo();
+%OptimizeFunctionOnNextCall(foo);
+foo();