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-rw-r--r--js/src/jit-test/tests/ion/dense-elem-write-barrier.js22
1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/dense-elem-write-barrier.js b/js/src/jit-test/tests/ion/dense-elem-write-barrier.js
new file mode 100644
index 000000000..79fda227d
--- /dev/null
+++ b/js/src/jit-test/tests/ion/dense-elem-write-barrier.js
@@ -0,0 +1,22 @@
+var arr = [];
+for (var i=0; i<20; i++) {
+ arr.push(new Int32Array(2000));
+}
+arr.push([null, null]);
+
+function test(o, x) {
+ assertEq(o[0], x);
+}
+
+function f() {
+ for (var i=0; i<3100; i++) {
+ var o = arr[i % arr.length];
+ if (o.length > 10 || i > 2000) {
+ var val = (i > 3000 ? 1 : null);
+ o[0] = val;
+ if (o.length < 5)
+ test(o, val);
+ }
+ }
+}
+f();