1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/SIMD/bug1296640-gc-args.js b/js/src/jit-test/tests/SIMD/bug1296640-gc-args.js
new file mode 100644
index 000000000..4dbe95410
--- /dev/null
+++ b/js/src/jit-test/tests/SIMD/bug1296640-gc-args.js
@@ -0,0 +1,9 @@
+if (typeof gczeal === 'undefined' || typeof SIMD === 'undefined') {
+    quit();
+}
+
+gczeal(9, 2);
+var Int8x16 = SIMD.Int8x16;
+var v = Int8x16();
+var good = { valueOf: () => 21 };
+Int8x16.shiftLeftByScalar(v, good);