Aart Bik
193985777d
Rationale: AOT's TFA sometimes knows a bit more about the result type of a call that is later recognized as an indexed load. This CL preserves that type for later use, improving decision on operations that consume this load. https://github.com/dart-lang/sdk/issues/37719 Change-Id: I5f88e03b68b4f7aec6e39a8ca94f243c2796730d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112028 Commit-Queue: Aart Bik <ajcbik@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
58 lines
1.1 KiB
Dart
Executable File
58 lines
1.1 KiB
Dart
Executable File
// Copyright (c) 2019, 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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// VMOptions=--deterministic
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import "package:expect/expect.dart";
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@pragma("vm:never-inline")
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foo(List<int> x) => x[1] + x[0];
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@pragma("vm:never-inline")
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bar(List<int> x) => 1 + x[0];
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@pragma("vm:never-inline")
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baz(List<int> x) => x[0] + 2;
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main() {
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var x = new List<int>(2);
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// Only first is null.
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x[0] = null;
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x[1] = 123;
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try {
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foo(x);
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} on NoSuchMethodError catch (e) {
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;
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}
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try {
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bar(x);
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} on NoSuchMethodError catch (e) {
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;
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}
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try {
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baz(x);
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} on NoSuchMethodError catch (e) {
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;
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}
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// Only second is null.
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x[0] = 456;
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x[1] = null;
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try {
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foo(x);
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} on NoSuchMethodError catch (e) {
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;
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}
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Expect.equals(457, bar(x));
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Expect.equals(458, baz(x));
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// Neither is null.
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x[0] = 789;
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x[1] = -1;
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Expect.equals(788, foo(x));
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Expect.equals(790, bar(x));
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Expect.equals(791, baz(x));
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}
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