diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/notV.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/notV.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+function foo(x) {
+   return !x;
+}
+
+assertEq(foo({}), false);
+assertEq(foo({}), false);
+assertEq(foo(1.1), false);
+assertEq(foo(1.1), false);
+assertEq(foo(0.0), true);
+assertEq(foo(0.0), true);
+assertEq(foo(null), true);
+assertEq(foo(null), true);
+assertEq(foo(undefined), true);
+assertEq(foo(undefined), true);
+assertEq(foo(Infinity), false);
+assertEq(foo(Infinity), false);
+assertEq(foo(NaN), true);
+assertEq(foo(NaN), true);
+assertEq(foo([]), false);
+assertEq(foo([]), false);
+assertEq(foo(''), true);
+assertEq(foo(''), true);
+assertEq(foo('x'), false);
+assertEq(foo('x'), false);
+assertEq(foo(true), false);
+assertEq(foo(true), false);
+assertEq(foo(false), true);
+assertEq(foo(false), true);
+assertEq(foo(-0.0), true);
+assertEq(foo(-0.0), true);
+assertEq(foo(objectEmulatingUndefined()), true);
+assertEq(foo(objectEmulatingUndefined()), true);