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+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+
+(function testFunctionPrototypeHasInstance() {
+ class A {};
+ var a = new A;
+
+ function foo() {
+ return A[Symbol.hasInstance](a);
+ };
+
+ %PrepareFunctionForOptimization(foo);
+ assertTrue(foo());
+ assertTrue(foo());
+ %OptimizeFunctionOnNextCall(foo);
+ assertTrue(foo());
+})();
+
+
+(function testFunctionPrototypeHasInstanceWithInference() {
+ class A {};
+ var a = new A;
+ a.bla = 42;
+
+ function foo() {
+ a.bla;
+ return A[Symbol.hasInstance](a);
+ };
+
+ %PrepareFunctionForOptimization(foo);
+ assertTrue(foo());
+ assertTrue(foo());
+ %OptimizeFunctionOnNextCall(foo);
+ assertTrue(foo());
+})();
+
+
+(function testFunctionPrototypeHasInstanceWithBoundFunction() {
+ class A {};
+ var a = new A;
+ var f = A.bind({});
+
+ function foo() {
+ return f[Symbol.hasInstance](a);
+ };
+
+ %PrepareFunctionForOptimization(foo);
+ assertTrue(foo());
+ assertTrue(foo());
+ %OptimizeFunctionOnNextCall(foo);
+ assertTrue(foo());
+
+ // JSCallReducer::ReduceFunctionPrototypeHasInstance ->
+ // JSNative...::ReduceJSOrdinaryHasInstance ->
+ // JSNative...::ReduceJSInstanceOf (on bound_target_function)
+ // ~~~~~>
+ // JSCallReducer::ReduceFunctionPrototypeHasInstance
+ // JSNative...::ReduceJSOrdinaryHasInstance ->
+ // JSNative...::ReduceJSHasInPrototypeChain
+})();
+
+
+(function testSimpleInstanceOf() {
+ class A {};
+ var a = new A;
+
+ function foo() {
+ return a instanceof A;
+ };
+
+ %PrepareFunctionForOptimization(foo);
+ assertTrue(foo());
+ assertTrue(foo());
+ %OptimizeFunctionOnNextCall(foo);
+ assertTrue(foo());
+})();