| // Copyright (c) 2016, 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. |
| |
| import 'package:async_helper/async_helper.dart'; |
| import '../compiler_helper.dart'; |
| |
| const String MOD1 = r""" |
| foo(param) { |
| var a = param ? 0xFFFFFFFF : 1; |
| return a % 2; |
| // present: ' % 2' |
| // absent: '$mod' |
| } |
| """; |
| |
| const String MOD2 = r""" |
| foo(param) { |
| var a = param ? 0xFFFFFFFF : -0.0; |
| return a % 2; |
| // Cannot optimize due to potential -0. |
| // present: '$mod' |
| // absent: ' % 2' |
| } |
| """; |
| |
| const String MOD3 = r""" |
| foo(param) { |
| var a = param ? 0xFFFFFFFF : -0.0; |
| return (a + 1) % 2; |
| // 'a + 1' cannot be -0.0, so we can optimize. |
| // present: ' % 2' |
| // absent: '$mod' |
| } |
| """; |
| |
| const String REM1 = r""" |
| foo(param) { |
| var a = param ? 0xFFFFFFFF : 1; |
| return a.remainder(2); |
| // Above can be compiled to '%'. |
| // present: ' % 2' |
| // absent: 'remainder' |
| } |
| """; |
| |
| const String REM2 = r""" |
| foo(param) { |
| var a = param ? 123.4 : -1; |
| return a.remainder(3); |
| // Above can be compiled to '%'. |
| // present: ' % 3' |
| // absent: 'remainder' |
| } |
| """; |
| |
| const String REM3 = r""" |
| foo(param) { |
| var a = param ? 123 : null; |
| return 100.remainder(a); |
| // No specialization for possibly null inputs. |
| // present: 'remainder' |
| // absent: '%' |
| } |
| """; |
| |
| main() { |
| runTests({bool useKernel}) async { |
| check(String test) async { |
| await compile(test, |
| entry: 'foo', |
| useKernel: useKernel, |
| check: checkerForAbsentPresent(test)); |
| } |
| |
| await check(MOD1); |
| await check(MOD2); |
| await check(MOD3); |
| await check(REM1); |
| await check(REM2); |
| await check(REM3); |
| } |
| |
| asyncTest(() async { |
| print('--test from ast---------------------------------------------------'); |
| await runTests(useKernel: false); |
| print('--test from kernel------------------------------------------------'); |
| await runTests(useKernel: true); |
| }); |
| } |