dart-sdk/tests/language/vm/load_elimination_mark_stored_values_escaping_test.dart
Robert Nystrom 2034061433 Migrate language_2/vm to NNBD.
Change-Id: I313a57ed7c7ea2ada75065f55a7367376f6bdae5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152183
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Srujan Gaddam <srujzs@google.com>
2020-06-25 20:39:23 +00:00

61 lines
1.2 KiB
Dart

// Copyright (c) 2014, 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 correctness of side effects tracking used by load to load forwarding.
// VMOptions=--no-use-osr --optimization-counter-threshold=10 --no-background-compilation
// Tests correct handling of redefinitions in aliasing computation.
import "package:expect/expect.dart";
late B G;
class A {
int val = -1;
@pragma('vm:prefer-inline')
poly(p) {
p.aa = this;
}
}
@pragma('vm:never-inline')
modify() {
G.aa.val = 123;
}
class B {
late A aa;
@pragma('vm:prefer-inline')
poly(p) {
G = this;
foo2(p, this);
modify();
}
}
@pragma('vm:prefer-inline')
foo(obj, p) => obj.poly(p);
@pragma('vm:prefer-inline')
foo2(obj, p) => obj.poly(p);
@pragma('vm:never-inline')
testfunc() {
var a = new A();
var b = new B();
foo(b, a);
return a.val;
}
main() {
foo(new B(), new A());
foo(new A(), new B());
foo2(new B(), new A());
foo2(new A(), new B());
for (var i = 0; i < 100; i++) testfunc();
Expect.equals(123, testfunc());
}