blob: 3e8e79271e65332977291e3bd5f2d54f1e0c0da6 [file] [log] [blame]
// 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.
// @dart = 2.9
// VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation
// Tests correct handling of redefinitions in aliasing computation.
import "package:expect/expect.dart";
var H = true;
class A {
B bb;
@pragma('vm:prefer-inline')
poly(p) {
if (H) {
bb = p;
}
B t = bb;
t.bval = 123;
return t.bval;
}
}
class B {
int bval = -1;
@pragma('vm:prefer-inline')
poly(p) {
return bval;
}
}
@pragma('vm:prefer-inline')
foo(obj, p) => obj.poly(p);
@pragma('vm:never-inline')
test() {
A a = new A();
B b = new B();
foo(a, b);
foo(a, b);
return b.bval;
}
main() {
// Prime foo with polymorphic type feedback.
foo(new B(), new A());
foo(new A(), new B());
for (var i = 0; i < 100; i++) test();
Expect.equals(123, test());
}