1 files changed, 114 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/udiv-by-constant.js b/js/src/jit-test/tests/ion/udiv-by-constant.js
new file mode 100644
index 0000000000..43549cd1e7
--- /dev/null
+++ b/js/src/jit-test/tests/ion/udiv-by-constant.js
@@ -0,0 +1,114 @@
+function uint_seq(count) {
+    with({}){}
+    var arr = [];
+    var x = 0xfac83126;
+    while (count--) {
+        x ^= x << 13;
+        x ^= x >> 17;
+        x ^= x << 5;
+        // SpiderMonkey does not know how to represent UInt32, only Int32, and
+        // including any UInt32 will cause the following function to be
+        // de-optimized as double math.
+        if (x|0 > 0)
+            arr.push(x|0);
+    }
+    return arr;
+}
+
+function test(name, asm, ion, int) {
+    with({}){}
+    let count = 10000;
+    let seq = uint_seq(count);
+    for (let x of seq) {
+        let rint = int(x);
+        let rasm = asm(x);
+        let rion = ion(x);
+        // console.log(name, x, rint, rasm, rion);
+        assertEq(rasm, rint);
+        assertEq(rion, rint);
+    }
+}
+
+var asmdiv2 = (function(m) {
+    "use asm"
+    function f(x) {
+        x = x|0;
+        var z = 0;
+        z = ((x>>>0) / 2)>>>0;
+        return z|0;
+    }
+    return f;
+})()
+
+var plaindiv2 = function(x) {
+    x = x|0;
+    var z = 0;
+    z = ((x>>>0) / 2)>>>0;
+    return z|0;
+}
+
+var interpdiv2 = function(x) {
+    with({}){};
+    x = x|0;
+    var z = 0;
+    z = ((x>>>0) / 2)>>>0;
+    return z|0;
+}
+
+test("div2", asmdiv2, plaindiv2, interpdiv2);
+
+var asmdiv5 = (function(m) {
+    "use asm"
+    function f(x) {
+        x = x|0;
+        var z = 0;
+        z = ((x>>>0) / 5)>>>0;
+        return z|0;
+    }
+    return f;
+})()
+
+var plaindiv5 = function(x) {
+    x = x|0;
+    var z = 0;
+    z = ((x>>>0) / 5)>>>0;
+    return z|0;
+}
+
+var interpdiv5 = function(x) {
+    with({}){};
+    x = x|0;
+    var z = 0;
+    z = ((x>>>0) / 5)>>>0;
+    return z|0;
+}
+
+test("div5", asmdiv5, plaindiv5, interpdiv5);
+
+var asmdiv7 = (function(m) {
+    "use asm"
+    function f(x) {
+        x = x|0;
+        var z = 0;
+        z = ((x>>>0) / 7)>>>0;
+        return z|0;
+    }
+    return f;
+})()
+
+var plaindiv7 = function(x) {
+    x = x|0;
+    var z = 0;
+    z = ((x>>>0) / 7)>>>0;
+    return z|0;
+}
+
+var interpdiv7 = function(x) {
+    with({}){};
+    x = x|0;
+    var z = 0;
+    z = ((x>>>0) / 7)>>>0;
+    return z|0;
+}
+
+test("div7", asmdiv7, plaindiv7, interpdiv7);