diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/mathMinMax.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/mathMinMax.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,42 @@
+var nan = Number.NaN;
+var negative_zero = -0;
+
+function max(a, b) {
+    return Math.max(a, b);
+}
+function min(a, b) {
+    return Math.min(a, b);
+}
+
+function main() {
+    for (var i = 0; i < 100; i++) {
+        assertEq(max(negative_zero, 0), 0);
+        assertEq(max(0, negative_zero), 0);
+        assertEq(min(0, negative_zero), negative_zero);
+        assertEq(min(negative_zero, 0), negative_zero);
+
+        assertEq(min(negative_zero, negative_zero), negative_zero);
+        assertEq(max(negative_zero, negative_zero), negative_zero);
+
+        assertEq(max(nan, 0), nan);
+        assertEq(min(nan, 0), nan);
+
+        assertEq(max(0, nan), nan);
+        assertEq(max(nan, 0), nan);
+
+        assertEq(max(3, 5), 5);
+        assertEq(max(5, 3), 5);
+
+        assertEq(min(3, 5), 3);
+        assertEq(min(5, 3), 3);
+
+        assertEq(max(Infinity, -Infinity), Infinity);
+        assertEq(min(Infinity, -Infinity), -Infinity);
+        assertEq(max(Infinity, nan), nan);
+
+        assertEq(max(negative_zero, -5), negative_zero);
+        assertEq(min(negative_zero, -5), -5);
+    }
+}
+
+main();
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