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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
36 lines
1.1 KiB
Dart
36 lines
1.1 KiB
Dart
// Copyright (c) 2013, 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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//
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// Dart deoptimization of Uint32Array and Int32Array loads.
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// @dart = 2.9
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import 'dart:typed_data';
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import "package:expect/expect.dart";
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loadI32(a) => a[0] + 1;
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loadUi32(a) => a[0] + 1;
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main() {
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var i32 = new Int32List(10);
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var ui32 = new Uint32List(10);
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i32[0] = ui32[0] = 8;
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// Optimize loadI32 and LoadUi32 for Smi result of indexed load.
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for (int i = 0; i < 2000; i++) {
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Expect.equals(9, loadI32(i32));
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Expect.equals(9, loadUi32(ui32));
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}
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// On ia32, deoptimize when attempting to load a value that exceeds
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// Smi range.
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i32[0] = ui32[0] = 2147483647;
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Expect.equals(2147483648, loadI32(i32));
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Expect.equals(2147483648, loadUi32(ui32));
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// Reoptimize again, but this time assume mixed Smi/Mint results
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i32[0] = ui32[0] = 10;
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for (int i = 0; i < 2000; i++) {
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Expect.equals(11, loadI32(i32));
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Expect.equals(11, loadUi32(ui32));
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}
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}
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