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Issue 11361190: a === b -> identical(a, b) (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Address comments. Created 8 years, 1 month ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, 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 // The "if (negative) res2 |= 3" below can be emitted as negative && (res2 |= 3) 5 // The "if (negative) res2 |= 3" below can be emitted as negative && (res2 |= 3)
6 // in JavaScript. Dart2js produced the wrong output. 6 // in JavaScript. Dart2js produced the wrong output.
7 7
8 _shiftRight(x, y) => x; 8 _shiftRight(x, y) => x;
9 int64_bits(x) => x; 9 int64_bits(x) => x;
10 10
11 class A { 11 class A {
12 opshr(int n, a2) { 12 opshr(int n, a2) {
13 int res2; 13 int res2;
14 bool negative = a2 === 496; 14 bool negative = a2 == 496;
15 15
16 res2 = _shiftRight(a2, n); 16 res2 = _shiftRight(a2, n);
17 if (negative) { 17 if (negative) {
18 res2 |= 3; 18 res2 |= 3;
19 } 19 }
20 return int64_bits(res2); 20 return int64_bits(res2);
21 } 21 }
22 } 22 }
23 23
24 main() { 24 main() {
25 var a = new A(); 25 var a = new A();
26 var t; 26 var t;
27 for (int i = 0; i < 3; i++) { 27 for (int i = 0; i < 3; i++) {
28 t = a.opshr(99, 496); 28 t = a.opshr(99, 496);
29 } 29 }
30 Expect.equals(499, t); 30 Expect.equals(499, t);
31 } 31 }
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