1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/ArrayLengthGetPropertyIC.js b/js/src/jit-test/tests/ion/ArrayLengthGetPropertyIC.js
new file mode 100644
index 0000000000..22197c7bef
--- /dev/null
+++ b/js/src/jit-test/tests/ion/ArrayLengthGetPropertyIC.js
@@ -0,0 +1,54 @@
+function intLength (a, l) {
+    var res = 0;
+    for (var i = 0; i < l; i++)
+        res += a.length;
+    return res / l;
+}
+
+function valueLength (a, l) {
+    var res = 0;
+    for (var i = 0; i < l; i++)
+        res += a.length;
+    return res / l;
+}
+
+var denseArray = [0,1,2,3,4,5,6,7,8,9];
+var typedArray = new Uint8Array(10);
+var hugeArray  = new Array(4294967295);
+var fakeArray1 = { length: 10 };
+var fakeArray2 = { length: 10.5 };
+
+// Check the interpreter result and play with TI type objects.
+assertEq(intLength(denseArray, 10), 10);
+assertEq(intLength(typedArray, 10), 10);
+// assertEq(intLength(fakeArray1, 10), 10);
+
+assertEq(valueLength(denseArray, 10), 10);
+assertEq(valueLength(typedArray, 10), 10);
+assertEq(valueLength(hugeArray , 10), 4294967295);
+assertEq(valueLength(fakeArray2, 10), 10.5);
+
+// Heat up to compile (either JM / Ion)
+assertEq(intLength(denseArray, 100), 10);
+assertEq(valueLength(denseArray, 100), 10);
+
+// No bailout should occur during any of the following checks:
+
+// Check get-property length IC with dense array.
+assertEq(intLength(denseArray, 1), 10);
+assertEq(valueLength(denseArray, 1), 10);
+
+// Check get-property length IC with typed array.
+assertEq(intLength(typedArray, 1), 10);
+assertEq(valueLength(typedArray, 1), 10);
+
+// Check length which do not fit on non-double value.
+assertEq(valueLength(hugeArray, 1), 4294967295);
+
+// Check object length property.
+assertEq(intLength(fakeArray1, 1), 10);
+assertEq(valueLength(fakeArray2, 1), 10.5);
+
+// Cause invalidation of intLength by returning a double.
+assertEq(intLength(hugeArray, 1), 4294967295);
+assertEq(intLength(fakeArray2, 1), 10.5);