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2034061433
Change-Id: I313a57ed7c7ea2ada75065f55a7367376f6bdae5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152183 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com>
28 lines
958 B
Dart
28 lines
958 B
Dart
// Copyright (c) 2012, 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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// Test correctness of side effects tracking used by load to load forwarding.
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// In this cutdown version of the load_to_load_forwarding_vm test, the function
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// being compiled ends up in a single basic block, which tests load
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// elimination when generating the initial sets.
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// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
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import "package:expect/expect.dart";
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import "dart:typed_data";
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testViewAliasing1() {
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final f64 = new Float64List(1);
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final f32 = new Float32List.view(f64.buffer);
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f64[0] = 1.0; // Should not be forwarded.
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f32[1] = 2.0; // upper 32bits for 2.0f and 2.0 are the same
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return f64[0];
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}
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main() {
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for (var i = 0; i < 20; i++) {
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Expect.equals(2.0, testViewAliasing1());
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}
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}
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