1 files changed, 75 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/mathSign.js b/js/src/jit-test/tests/ion/mathSign.js
new file mode 100644
index 0000000000..892bcbe63b
--- /dev/null
+++ b/js/src/jit-test/tests/ion/mathSign.js
@@ -0,0 +1,75 @@
+// Test Math.sign() for IonMonkey.
+// Requires --ion-eager to enter at the top of each loop.
+
+var signDITests = [
+    [0.49999999999999997, 1],
+    [0.5, 1],
+    [1.0, 1],
+    [1.5, 1],
+    [792.8, 1],
+    [-0.1, -1],
+    [-1.0001, -1],
+    [-3.14, -1],
+    [900000000000, 1],
+    [+0, +0],
+    [-Infinity, -1],
+    [Infinity, 1],
+];
+
+var signDITests_bailout = [
+    // Add a few 'double -> int' tests before the bailout.
+    ...(function*(){ for (var i = 0; i < 50; ++i) yield* signDITests; })(),
+
+    // Trigger bailout for negative zero.
+    [-0, -0],
+];
+
+var signDTests = [
+    [-0, -0],
+    [0.49999999999999997, 1],
+    [0.5, 1],
+    [1.0, 1],
+    [1.5, 1],
+    [792.8, 1],
+    [-0.1, -1],
+    [-1.0001, -1],
+    [-3.14, -1],
+    [900000000000, 1],
+    [-0, -0],
+    [+0, +0],
+    [-Infinity, -1],
+    [Infinity, 1],
+    [NaN, NaN],
+];
+
+var signITests = [
+    [0, 0],
+    [4, 1],
+    [-1, -1],
+    [-7, -1],
+    [2147483647, 1],
+    [-2147483648, -1],
+];
+
+// Typed functions to be compiled by Ion.
+function signDI(x) { return Math.sign(x); }
+function signDI_bailout(x) { return Math.sign(x); }
+function signD(x) { return Math.sign(x); }
+function signI(x) { return Math.sign(x); }
+
+function test() {
+    // Always run this function in the interpreter.
+    with ({}) {}
+
+    for (var i = 0; i < signDITests.length; i++)
+        assertEq(signDI(signDITests[i][0]), signDITests[i][1]);
+    for (var i = 0; i < signDITests_bailout.length; i++)
+        assertEq(signDI_bailout(signDITests_bailout[i][0]), signDITests_bailout[i][1]);
+    for (var i = 0; i < signDTests.length; i++)
+        assertEq(signD(signDTests[i][0]), signDTests[i][1]);
+    for (var i = 0; i < signITests.length; i++)
+        assertEq(signI(signITests[i][0]), signITests[i][1]);
+}
+
+for (var i = 0; i < 40; i++)
+    test();