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Diffstat (limited to 'deps/v8/test/mjsunit/compiler/instanceof4.js')
-rw-r--r-- | deps/v8/test/mjsunit/compiler/instanceof4.js | 80 |
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()); +})(); |