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Unified Diff: tests/standalone/regress_25335_test.dart

Issue 1557923003: Ensure consistency of representations when replacing integer ops with constants (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Created 4 years, 11 months ago
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Index: tests/standalone/regress_25335_test.dart
diff --git a/tests/standalone/regress_25335_test.dart b/tests/standalone/regress_25335_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..e4551a25af3df738c50bcefcbd07cba8b08b38eb
--- /dev/null
+++ b/tests/standalone/regress_25335_test.dart
@@ -0,0 +1,33 @@
+// Copyright (c) 2016, 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 that canonicalization inserts constants with correct representation.
+// VMOptions=--optimization-counter-threshold=10 --optimization-filter=bar
+
+import 'dart:typed_data';
+
+toSigned(v, width) {
+ var signMask = 1 << (width - 1);
+ return (v & (signMask - 1)) - (v & signMask);
+}
+
+foo(value) {
+ return value >> 32;
+}
+
+bar(td) {
+ return toSigned(foo(td[0]), 64);
+}
+
+main() {
+ toSigned(1 << 1, 32);
+ toSigned(1 << 32, 32);
+
+ var l = new Int64List(1);
+ l[0] = 0xf8f7f6f5f4f3f2f1;
+
+ for (var i = 0; i < 20; i++) {
+ bar(l);
+ }
+}
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