deps: update V8 to 7.8.279.9

PR-URL: https://github.com/nodejs/node/pull/29694
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/deps/v8/test/mjsunit/compiler/instanceof4.js b/deps/v8/test/mjsunit/compiler/instanceof4.js
new file mode 100644
index 0000000000..5074fb5f64
--- /dev/null
+++ b/deps/v8/test/mjsunit/compiler/instanceof4.js
@@ -0,0 +1,80 @@
+// 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());
+})();