1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 // 5 // Flags: --allow-natives-syntax 6 7 var s = %CreatePrivateOwnSymbol("s"); 8 var s1 = %CreatePrivateOwnSymbol("s1"); 9 10 function TestSimple() { 11 var p = {} 12 p[s] = "moo"; 13 14 var o = Object.create(p); 15 16 assertEquals(undefined, o[s]); 17 assertEquals("moo", p[s]); 18 19 o[s] = "bow-wow"; 20 assertEquals("bow-wow", o[s]); 21 assertEquals("moo", p[s]); 22 } 23 24 TestSimple(); 25 26 27 function TestICs() { 28 var p = {} 29 p[s] = "moo"; 30 31 32 var o = Object.create(p); 33 o[s1] = "bow-wow"; 34 function checkNonOwn(o) { 35 assertEquals(undefined, o[s]); 36 assertEquals("bow-wow", o[s1]); 37 } 38 39 checkNonOwn(o); 40 41 // Test monomorphic/optimized. 42 for (var i = 0; i < 1000; i++) { 43 checkNonOwn(o); 44 } 45 46 // Test non-monomorphic. 47 for (var i = 0; i < 1000; i++) { 48 var oNew = Object.create(p); 49 oNew["s" + i] = i; 50 oNew[s1] = "bow-wow"; 51 checkNonOwn(oNew); 52 } 53 } 54 55 TestICs(); 56
