| // Copyright (c) 2012, 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. |
| // VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation |
| |
| // Test optimized CodeUnitAt and array access. |
| |
| import "package:expect/expect.dart"; |
| |
| String one_byte = "hest"; |
| String two_byte = "h\u{2029}ns"; |
| |
| int testOneByteCodeUnitAt(String x, int j) { |
| int test() { |
| return x.codeUnitAt(j); |
| } |
| |
| for (int i = 0; i < 20; i++) test(); |
| return test(); |
| } |
| |
| int testTwoByteCodeUnitAt(String x, int j) { |
| int test() { |
| return x.codeUnitAt(j); |
| } |
| |
| for (int i = 0; i < 20; i++) test(); |
| return test(); |
| } |
| |
| int testConstantStringCodeUnitAt(int j) { |
| int test() { |
| return "høns".codeUnitAt(j); |
| } |
| |
| for (int i = 0; i < 20; i++) test(); |
| return test(); |
| } |
| |
| int testConstantIndexCodeUnitAt(String x) { |
| int test() { |
| return x.codeUnitAt(1); |
| } |
| |
| for (int i = 0; i < 20; i++) test(); |
| return test(); |
| } |
| |
| int testOneByteCodeUnitAtInLoop(var x) { |
| var result = 0; |
| for (int i = 0; i < x.length; i++) { |
| result += x.codeUnitAt(i) as int; |
| } |
| return result; |
| } |
| |
| int testTwoByteCodeUnitAtInLoop(var x) { |
| var result = 0; |
| for (int i = 0; i < x.length; i++) { |
| result += x.codeUnitAt(i) as int; |
| } |
| return result; |
| } |
| |
| main() { |
| for (int j = 0; j < 10; j++) { |
| Expect.equals(101, testOneByteCodeUnitAt(one_byte, 1)); |
| Expect.equals(8233, testTwoByteCodeUnitAt(two_byte, 1)); |
| Expect.equals(248, testConstantStringCodeUnitAt(1)); |
| Expect.equals(101, testConstantIndexCodeUnitAt(one_byte)); |
| } |
| for (int j = 0; j < 20; j++) { |
| Expect.equals(436, testOneByteCodeUnitAtInLoop(one_byte)); |
| Expect.equals(8562, testTwoByteCodeUnitAtInLoop(two_byte)); |
| } |
| Expect.throws(() => testOneByteCodeUnitAtInLoop(123)); |
| Expect.throws(() => testTwoByteCodeUnitAtInLoop(123)); |
| } |