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5e06168ea7
By making the update an assignment, we were generating the wrong order of copies. Since the checked input of HTypeKnown may have a name, we need to make it a copy. Review URL: https://codereview.chromium.org//44143002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@29331 260f80e4-7a28-3924-810f-c04153c831b5
33 lines
833 B
Dart
33 lines
833 B
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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// Regression test for dart2js that used to generate wrong code for
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// [foo].
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import "package:expect/expect.dart";
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import "compiler_annotations.dart";
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main() {
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var result = foo(1, 2);
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Expect.equals(1, result[0]);
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Expect.equals(2, result[1]);
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result = foo([], 2);
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Expect.equals(0, result[0]);
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Expect.listEquals([], result[1]);
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}
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@DontInline()
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foo(a, b) {
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() => 42;
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if (a is List) {
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var saved = a as List;
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// By having two HTypeKnown SSA instructions for [a], dart2js was
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// confused when updating the phis at exit of this block.
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a = a.length;
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b = saved;
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}
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return [a, b];
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}
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