| // Copyright 2016 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 --expose-gc |
| |
| // Make sure literals are strongly rooted and safe from weak-code deopts. |
| |
| (function() { |
| function foo() { |
| var a = { y: 0 }; |
| a.y = 1; |
| return a; |
| } |
| |
| foo(); |
| foo(); |
| %OptimizeFunctionOnNextCall(foo); |
| foo(); |
| gc(); |
| assertOptimized(foo); |
| })(); |
| |
| |
| (function() { |
| function hot(o) { |
| return o.x + o.y; |
| } |
| function mapPlus(a, y) { |
| return a.map(x => hot({x, y})); |
| } |
| |
| var a = [1, 2, 3]; |
| print(mapPlus(a, 1)); |
| print(mapPlus(a, 2)); |
| %OptimizeFunctionOnNextCall(hot); |
| print(mapPlus(a, 3)); |
| gc(); // BOOOM! |
| assertOptimized(hot); |
| print(mapPlus(a, 4)); |
| })(); |
| |
| // Verify that we can handle the creation of a new script, where the |
| // code is cached and the feedback vector has to be re-created. |
| (function() { |
| var sopen = "function wrapper() { "; |
| var s1 = "function foo() { return bar(5); } "; |
| var s2 = "foo(); foo(); %OptimizeFunctionOnNextCall(foo); foo(); "; |
| var sclose = "} wrapper(); "; |
| var s = sopen + s1 + s2 + sclose; |
| function bar(i) { return i + 3 }; |
| |
| for (var i = 0; i < 4; i++) { |
| eval(s); |
| } |
| })(); |