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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());
})();
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