| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| // Test division by power of two. |
| // Test that results before and after optimization are the same. |
| // VMOptions=--optimization-counter-threshold=10 --no-use-osr |
| |
| import "package:expect/expect.dart"; |
| |
| // [function, [list of tuples argument/result]]. |
| var expectedResults = [ |
| [ |
| divBy1, |
| [ |
| [134217730, 134217730], |
| [-134217730, -134217730], |
| [10, 10], |
| [-10, -10] |
| ] |
| ], |
| [ |
| divByNeg1, |
| [ |
| [134217730, -134217730], |
| [-134217730, 134217730], |
| [10, -10], |
| [-10, 10] |
| ] |
| ], |
| [ |
| divBy2, |
| [ |
| [134217730, 67108865], |
| [-134217730, -67108865], |
| [10, 5], |
| [-10, -5] |
| ] |
| ], |
| [ |
| divByNeg2, |
| [ |
| [134217730, -67108865], |
| [-134217730, 67108865], |
| [10, -5], |
| [-10, 5] |
| ] |
| ], |
| [ |
| divBy4, |
| [ |
| [134217730, 33554432], |
| [-134217730, -33554432], |
| [10, 2], |
| [-10, -2] |
| ] |
| ], |
| [ |
| divByNeg4, |
| [ |
| [134217730, -33554432], |
| [-134217730, 33554432], |
| [10, -2], |
| [-10, 2] |
| ] |
| ], |
| [ |
| divBy134217728, |
| [ |
| [134217730, 1], |
| [-134217730, -1], |
| [10, 0], |
| [-10, 0] |
| ] |
| ], |
| [ |
| divByNeg134217728, |
| [ |
| [134217730, -1], |
| [-134217730, 1], |
| [10, 0], |
| [-10, 0] |
| ] |
| ], |
| // Use different functions for 64 bit arguments. |
| [ |
| divBy4_, |
| [ |
| [549755813990, 137438953497], |
| [-549755813990, -137438953497], |
| [288230925907525632, 72057731476881408], |
| [-288230925907525632, -72057731476881408] |
| ] |
| ], |
| [ |
| divByNeg4_, |
| [ |
| [549755813990, -137438953497], |
| [-549755813990, 137438953497], |
| [288230925907525632, -72057731476881408], |
| [-288230925907525632, 72057731476881408] |
| ] |
| ], |
| [ |
| divBy549755813888, |
| [ |
| [549755813990, 1], |
| [-549755813990, -1], |
| [288230925907525632, 524289], |
| [-288230925907525632, -524289] |
| ] |
| ], |
| [ |
| divByNeg549755813888, |
| [ |
| [549755813990, -1], |
| [-549755813990, 1], |
| [288230925907525632, -524289], |
| [-288230925907525632, 524289] |
| ] |
| ], |
| ]; |
| |
| divBy0(a) => a ~/ 0; |
| divBy1(a) => a ~/ 1; |
| divByNeg1(a) => a ~/ -1; |
| divBy2(a) => a ~/ 2; |
| divByNeg2(a) => a ~/ -2; |
| divBy4(a) => a ~/ 4; |
| divByNeg4(a) => a ~/ -4; |
| divBy134217728(a) => a ~/ 134217728; |
| divByNeg134217728(a) => a ~/ -134217728; |
| |
| divBy4_(a) => a ~/ 4; |
| divByNeg4_(a) => a ~/ -4; |
| divBy549755813888(a) => a ~/ 549755813888; |
| divByNeg549755813888(a) => a ~/ -549755813888; |
| |
| main() { |
| for (int i = 0; i < 20; i++) { |
| for (var e in expectedResults) { |
| Function f = e[0]; |
| List values = e[1]; |
| for (var v in values) { |
| int arg = v[0]; |
| int res = v[1]; |
| Expect.equals(res, f(arg)); |
| } |
| } |
| } |
| } |