| // 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. |
| // |
| // Dart deoptimization of Uint32Array and Int32Array loads. |
| |
| import 'dart:typed_data'; |
| |
| loadI32(a) => a[0] + 1; |
| loadUi32(a) => a[0] + 1; |
| |
| main() { |
| var i32 = new Int32List(10); |
| var ui32 = new Uint32List(10); |
| i32[0] = ui32[0] = 8; |
| // Optimize loadI32 and LoadUi32 for Smi result of indexed load. |
| for (int i = 0; i < 2000; i++) { |
| Expect.equals(9, loadI32(i32)); |
| Expect.equals(9, loadUi32(ui32)); |
| } |
| // On ia32, deoptimize when attempting to load a value that exceeds |
| // Smi range. |
| i32[0] = ui32[0] = 2147483647; |
| Expect.equals(2147483648, loadI32(i32)); |
| Expect.equals(2147483648, loadUi32(ui32)); |
| // Reoptimize again, but this time assume mixed Smi/Mint results |
| i32[0] = ui32[0] = 10; |
| for (int i = 0; i < 2000; i++) { |
| Expect.equals(11, loadI32(i32)); |
| Expect.equals(11, loadUi32(ui32)); |
| } |
| } |