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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | |
| 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. | |
| 4 // | |
| 5 // Dart deoptimization of Uint32Array and Int32Array loads. | |
| 6 | |
| 7 import 'dart:typed_data'; | |
| 8 | |
| 9 loadI32(a) => a[0] + 1; | |
| 10 loadUi32(a) => a[0] + 1; | |
| 11 | |
| 12 main() { | |
| 13 var i32 = new Int32List(10); | |
| 14 var ui32 = new Uint32List(10); | |
| 15 i32[0] = ui32[0] = 8; | |
| 16 // Optimize loadI32 and LoadUi32 for Smi result of indexed load. | |
| 17 for (int i = 0; i < 2000; i++) { | |
| 18 Expect.equals(9, loadI32(i32)); | |
| 19 Expect.equals(9, loadUi32(ui32)); | |
| 20 } | |
| 21 // On ia32, deoptimize when attempting to load a value that exceeds | |
| 22 // Smi range. | |
| 23 i32[0] = ui32[0] = 2147483647; | |
| 24 Expect.equals(2147483648, loadI32(i32)); | |
| 25 Expect.equals(2147483648, loadUi32(ui32)); | |
| 26 // Reoptimize again, but this time assume mixed Smi/Mint results | |
| 27 i32[0] = ui32[0] = 10; | |
| 28 for (int i = 0; i < 2000; i++) { | |
| 29 Expect.equals(11, loadI32(i32)); | |
| 30 Expect.equals(11, loadUi32(ui32)); | |
| 31 } | |
| 32 } | |
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