OLD | NEW |
---|---|
(Empty) | |
1 // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 // | |
5 // Test that type tests are not misoptimized. | |
6 // VMOptions=--optimization-counter-threshold=1000 --optimization-filter=IsAnInt | |
7 | |
8 main() { | |
9 train(); | |
10 if (IsAnInt("This is not an int")) throw "oops"; | |
11 } | |
12 | |
13 // Prime the IC with things that are and are not ints. | |
14 void train() { | |
15 int sum = 0; | |
16 for (int i = 0; i < 10000; i++) { | |
17 IsAnInt(42); // Smi - always goes first in the generated code. | |
18 IsAnInt(1 << 62); // Mint | |
Vyacheslav Egorov (Google)
2017/05/23 16:00:32
this is only mint on x64.
erikcorry
2017/05/24 13:37:16
Comment fixed.
| |
19 IsAnInt(1 << 62); | |
20 IsAnInt(4200000000000000000000000000000000000); // BigInt | |
21 IsAnInt(4200000000000000000000000000000000000); | |
22 // This one that is not an int goes last in the IC because it is called | |
23 // less frequently. | |
24 IsAnInt(4.2); | |
25 } | |
26 } | |
27 | |
28 int IsAnInt(Foo f) => f is int; | |
OLD | NEW |