| Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1 | // Copyright 2016 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: --expose-gc --min-semi-space-size=32 |
| 6 | |
| 7 | // We need to set --min-semi-space-size to enable allocation site pretenuring. |
| 8 | |
| 9 | function foo(i) { |
| 10 | with({}) {}; |
| 11 | x = {}; |
| 12 | x.a = 0.23; |
| 13 | x.b = 0.3; |
| 14 | return x; |
| 15 | } |
| 16 | |
| 17 | var all = []; |
| 18 | function step() { |
| 19 | for (var i = 0; i < 100; i++) { |
| 20 | var z = foo(i); |
| 21 | // Write unboxed double in object slack. |
| 22 | z.c = 0.1 + z.b |
| 23 | all.push(z); |
| 24 | } |
| 25 | gc(1); |
| 26 | gc(1); |
| 27 | } |
| 28 | |
| 29 | step(); |
| 30 | // Now foo will allocate objects in old space. |
| 31 | step(); |