dart-sdk/tests/language/optimize/redundant_array_load_test.dart
Robert Nystrom c959c9aba7 Migrate language_2/optimize to NNBD.
Change-Id: I3f67dd79ff2ee745cc2ea161ce7150630e805c97
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150186
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Nicholas Shahan <nshahan@google.com>
2020-06-06 01:42:35 +00:00

31 lines
644 B
Dart

// Copyright (c) 2012, 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.
// VMOptions=--optimization-counter-threshold=10 --no-use-osr
import "package:expect/expect.dart";
// Test optimization of redundant array loads.
var A = [0, 2, 3];
test1(a) {
int x = a[0];
int y = a[1];
++a[0];
return a[0] + y + a[2];
}
int test2(a) {
return a[2] + a[2];
}
main() {
for (int i = 0; i < 20; i++) {
test1(A);
test2(A);
}
Expect.equals(26, test1(A));
Expect.equals(6, test2(A));
}