1 files changed, 63 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/testObjectHasPrototype.js b/js/src/jit-test/tests/ion/testObjectHasPrototype.js
new file mode 100644
index 0000000000..0fce075c5b
--- /dev/null
+++ b/js/src/jit-test/tests/ion/testObjectHasPrototype.js
@@ -0,0 +1,63 @@
+setJitCompilerOption("ion.warmup.trigger", 4);
+
+var ObjectHasPrototype = getSelfHostedValue("ObjectHasPrototype");
+
+var StringProto = String.prototype;
+var ObjectProto = Object.prototype;
+
+function testBasic() {
+  var f = function() {
+    assertEq(ObjectHasPrototype(StringProto, ObjectProto), true);
+  };
+  for (var i = 0; i < 40; i++) {
+    f();
+  }
+}
+testBasic();
+
+function testProtoChange(proto) {
+  var f = function(expected) {
+    assertEq(ObjectHasPrototype(StringProto, ObjectProto), expected);
+  };
+  var expected = true;
+  for (var i = 0; i < 120; i++) {
+    f(expected);
+    if (i == 40) {
+      Object.setPrototypeOf(StringProto, proto);
+      expected = false;
+    }
+    if (i == 80) {
+      Object.setPrototypeOf(StringProto, ObjectProto);
+      expected = true;
+    }
+  }
+}
+testProtoChange(null);
+// Different singleton
+testProtoChange(Function.prototype);
+// native non-singleton
+testProtoChange(/a/);
+// non-native non-singleton
+testProtoChange({});
+
+var Int32ArrayProto = Int32Array.prototype;
+var TypedArrayProto = Object.getPrototypeOf(Int32ArrayProto);
+function testProtoProtoChange(proto) {
+  var f = function() {
+    assertEq(ObjectHasPrototype(Int32ArrayProto, TypedArrayProto), true);
+  };
+  for (var i = 0; i < 120; i++) {
+    f();
+    if (i == 40)
+      Object.setPrototypeOf(TypedArrayProto, proto);
+    if (i == 80)
+      Object.setPrototypeOf(TypedArrayProto, Object);
+  }
+}
+testProtoProtoChange(null);
+// Different singleton
+testProtoProtoChange(Function.prototype);
+// native non-singleton
+testProtoProtoChange(/a/);
+// non-native non-singleton
+testProtoProtoChange({});