Index: tests/language/vm/regress_23117_vm_test.dart |
=================================================================== |
--- tests/language/vm/regress_23117_vm_test.dart (revision 0) |
+++ tests/language/vm/regress_23117_vm_test.dart (working copy) |
@@ -0,0 +1,21 @@ |
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file |
+// for details. All rights reserved. Use of this source code is governed by a |
+// BSD-style license that can be found in the LICENSE file. |
+// Test location summary for Uint32 multiplication. |
+// VMOptions=--optimization-counter-threshold=5 |
+ |
+import 'package:expect/expect.dart'; |
+ |
+mintLeftShift(x, y) => x << y; |
+mintRightShift(x, y) => x >> y; |
+ |
+main() { |
+ for (var i = 0; i < 20; i++) { |
+ var x = 1 + (1 << (i + 32)); |
+ Expect.equals(x, mintLeftShift(x, 0)); |
+ Expect.equals(x, mintRightShift(x, 0)); |
+ Expect.equals(2*x, mintLeftShift(x, 1)); |
+ Expect.equals(x~/2, mintRightShift(x, 1)); |
+ Expect.equals(x, mintRightShift(mintLeftShift(x, i), i)); |
+ } |
+} |