diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/andOr.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/andOr.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+function testBooleans(a, b) {
+    var res = 0;
+    if (a && b) res += 2;
+    if (b || a) res += 1;
+    return res;
+}
+assertEq(testBooleans(false, false), 0);
+assertEq(testBooleans(false, true), 1);
+assertEq(testBooleans(true, false), 1);
+assertEq(testBooleans(true, true), 3);
+
+function testShortCircuit(a) {
+    var b = 0;
+    ++a && a++;
+    a || (b = 100);
+    return a + b;
+}
+assertEq(testShortCircuit(0), 2);
+assertEq(testShortCircuit(-2), 100);
+assertEq(testShortCircuit(-1), 100);
+
+function testValues(a, b) {
+    if (a && b) return 2;
+    if (b || a) return 1;
+    return 0;
+}
+assertEq(testValues(false, true), 1);
+assertEq(testValues("foo", 22), 2);
+assertEq(testValues(null, ""), 0);
+assertEq(testValues(Math.PI, undefined), 1);
+assertEq(testValues(Math.abs, 2.2), 2);