Joshua Litt
20faaa5d94
Change-Id: Ib18f554c1076f27a3f7c0df5a36410da41a1f467 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148784 Reviewed-by: Paul Berry <paulberry@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
96 lines
2.2 KiB
Dart
96 lines
2.2 KiB
Dart
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.7
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library tdiv_test;
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import 'dart:async';
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import 'package:async_helper/async_helper.dart';
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import '../helpers/compiler_helper.dart';
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const String TEST1 = r"""
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foo(param) {
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var a = param ? 0xFFFFFFFF : 1;
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return a ~/ 2;
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// Above can be compiled to division followed by truncate.
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// present: ' / 2 | 0'
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// absent: 'tdiv'
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}
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""";
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const String TEST2 = r"""
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foo(param) {
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var a = param ? 0xFFFFFFFF : 1;
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return a ~/ 3;
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// Above can be compiled to division followed by truncate.
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// present: ' / 3 | 0'
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// absent: 'tdiv'
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}
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""";
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const String TEST3 = r"""
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foo(param) {
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var a = param ? 0xFFFFFFFF : -1;
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return a ~/ 2;
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// Potentially negative inputs go via fast helper.
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// present: '_tdivFast'
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// absent: '/'
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}
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""";
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const String TEST4 = r"""
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foo(param1, param2) {
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var a = param1 ? 0xFFFFFFFF : 0;
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return a ~/ param2;
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// Unknown divisor goes via full implementation.
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// present: '$tdiv'
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// absent: '/'
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}
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""";
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const String TEST5 = r"""
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foo(param1, param2) {
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var a = param1 ? 0xFFFFFFFF : 0;
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var b = param2 ? 3 : 4;
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return a ~/ b;
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// We could optimize this with range analysis, but type inference summarizes
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// '3 or 4' to uint31, which is not >= 2.
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// present: '$tdiv'
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// absent: '/'
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}
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""";
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const String TEST_REGRESS_37502 = r"""
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foo(param1, param2) {
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var a = param1 ? 1.2 : 12.3;
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var b = param2 ? 3.14 : 2.81;
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return (a ~/ b).gcd(2);
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// The result of ~/ is int; gcd is defined only on int and is too complex
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// to be inlined.
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//
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// present: 'JSInt_methods.gcd'
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}
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""";
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main() {
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runTests() async {
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Future check(String test) {
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return compile(test, entry: 'foo', check: checkerForAbsentPresent(test));
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}
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await check(TEST1);
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await check(TEST2);
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await check(TEST3);
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await check(TEST4);
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await check(TEST5);
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await check(TEST_REGRESS_37502);
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}
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asyncTest(() async {
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print('--test from kernel------------------------------------------------');
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await runTests();
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});
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}
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