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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 // Dart test program checking that optimizations are not too aggresive and | 4 // Dart test program checking that optimizations are not too aggresive and |
5 // incorrect: | 5 // incorrect: |
6 // - (a * (1.0 / b)) | 6 // - (a * (1.0 / b)) |
7 // | 7 // |
8 // VMOptions=--optimization-counter-threshold=8 --no-use-osr | 8 // VMOptions=--optimization-counter-threshold=8 --no-use-osr --no-background-com
pilation |
9 | 9 |
10 import "package:expect/expect.dart"; | 10 import "package:expect/expect.dart"; |
11 | 11 |
12 var xx = 23.0; | 12 var xx = 23.0; |
13 | 13 |
14 main() { | 14 main() { |
15 xx = 1e-6; | 15 xx = 1e-6; |
16 scaleIt(1e-310); | 16 scaleIt(1e-310); |
17 Expect.isTrue(xx.isInfinite); | 17 Expect.isTrue(xx.isInfinite); |
18 for (int i = 0; i < 10; i++) { | 18 for (int i = 0; i < 10; i++) { |
19 xx = 24.0; | 19 xx = 24.0; |
20 scaleIt(6.0); | 20 scaleIt(6.0); |
21 Expect.equals(4.0, xx); | 21 Expect.equals(4.0, xx); |
22 } | 22 } |
23 xx = 1e-6; | 23 xx = 1e-6; |
24 scaleIt(1e-310); | 24 scaleIt(1e-310); |
25 Expect.isTrue(xx.isInfinite); | 25 Expect.isTrue(xx.isInfinite); |
26 } | 26 } |
27 | 27 |
28 scaleIt(double b) { | 28 scaleIt(double b) { |
29 scale(1.0 / b); | 29 scale(1.0 / b); |
30 } | 30 } |
31 | 31 |
32 scale(a) { | 32 scale(a) { |
33 xx *= a; | 33 xx *= a; |
34 } | 34 } |
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