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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 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 | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 // | 4 // |
5 // Dart deoptimization of Uint32Array and Int32Array loads. | 5 // Dart deoptimization of Uint32Array and Int32Array loads. |
6 | 6 |
7 import 'dart:typeddata'; | 7 import 'dart:typed_data'; |
8 | 8 |
9 loadI32(a) => a[0] + 1; | 9 loadI32(a) => a[0] + 1; |
10 loadUi32(a) => a[0] + 1; | 10 loadUi32(a) => a[0] + 1; |
11 | 11 |
12 main() { | 12 main() { |
13 var i32 = new Int32List(10); | 13 var i32 = new Int32List(10); |
14 var ui32 = new Uint32List(10); | 14 var ui32 = new Uint32List(10); |
15 i32[0] = ui32[0] = 8; | 15 i32[0] = ui32[0] = 8; |
16 // Optimize loadI32 and LoadUi32 for Smi result of indexed load. | 16 // Optimize loadI32 and LoadUi32 for Smi result of indexed load. |
17 for (int i = 0; i < 2000; i++) { | 17 for (int i = 0; i < 2000; i++) { |
18 Expect.equals(9, loadI32(i32)); | 18 Expect.equals(9, loadI32(i32)); |
19 Expect.equals(9, loadUi32(ui32)); | 19 Expect.equals(9, loadUi32(ui32)); |
20 } | 20 } |
21 // On ia32, deoptimize when attempting to load a value that exceeds | 21 // On ia32, deoptimize when attempting to load a value that exceeds |
22 // Smi range. | 22 // Smi range. |
23 i32[0] = ui32[0] = 2147483647; | 23 i32[0] = ui32[0] = 2147483647; |
24 Expect.equals(2147483648, loadI32(i32)); | 24 Expect.equals(2147483648, loadI32(i32)); |
25 Expect.equals(2147483648, loadUi32(ui32)); | 25 Expect.equals(2147483648, loadUi32(ui32)); |
26 // Reoptimize again, but this time assume mixed Smi/Mint results | 26 // Reoptimize again, but this time assume mixed Smi/Mint results |
27 i32[0] = ui32[0] = 10; | 27 i32[0] = ui32[0] = 10; |
28 for (int i = 0; i < 2000; i++) { | 28 for (int i = 0; i < 2000; i++) { |
29 Expect.equals(11, loadI32(i32)); | 29 Expect.equals(11, loadI32(i32)); |
30 Expect.equals(11, loadUi32(ui32)); | 30 Expect.equals(11, loadUi32(ui32)); |
31 } | 31 } |
32 } | 32 } |
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