dart-sdk/tests/language_strong/bit_shift_test.dart
Bob Nystrom 6c757957db Move the dev_compiler strong mode tests into sdk/tests/.
DDC's codegen test copies those files to a local "gen" directory so
that it can do stuff like splitting out the multitests before it
compiles them to JS.

I left all of that alone, so the rest of DDC's test infrastructure is
unchanged. The very first step that builds the "gen" directory just
copies from sdk/tests/..._strong/... instead and the rest is good to go.

I did not move not_yet_strong_tests.dart somewhere more accessible yet
because I'm not sure if kernel needs it or where it should go.

I did not create any status files because DDC doesn't need them and
there are no test suites for the new directories for the other
platforms.
2016-12-09 11:09:55 -08:00

49 lines
971 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.
import "package:expect/expect.dart";
constants() {
Expect.equals(0, 499 >> 33);
Expect.equals(0, (499 << 33) & 0xFFFFFFFF);
}
foo(i) {
if (i != 0) {
y--;
foo(i - 1);
y++;
}
}
var y;
// id returns [x] in a way that should be difficult to predict statically.
id(x) {
y = x;
foo(10);
return y;
}
interceptors() {
Expect.equals(0, id(499) >> 33);
Expect.equals(0, (id(499) << 33) & 0xFFFFFFFF);
}
speculative() {
var a = id(499);
for (int i = 0; i < 1; i++) {
Expect.equals(0, a >> 33);
Expect.equals(0, (a << 33) & 0xFFFFFFFF);
}
}
// JavaScript shifts by the amount modulo 32. That is x << y is equivalent to
// x << (y & 0x1F). Dart does not.
main() {
constants();
interceptors();
speculative();
}