dart-sdk/tests/standalone_2/assert_assignable_canon_test.dart
Teagan Strickland f822dfa3ea Reland "[vm/compiler] Implement new inlining pragmas."
This change introduces two new pragmas:

* `@pragma('vm:never-inline')`
* `@pragma('vm:prefer-inline')`

These replaces the old way of specifying AlwaysInline or NeverInline
annotations when the (now removed) --enable-inlining-annotations flag
was used.

Bug: https://github.com/dart-lang/sdk/issues/36571
Change-Id: Iee152c1d67abde8d58c58fa967449d36e77c8c93
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/110440
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Samir Jindel <sjindel@google.com>
2019-07-30 12:01:06 +00:00

35 lines
863 B
Dart

// 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.
//
// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
abstract class A<T extends A<T>> {
@pragma('vm:prefer-inline')
f(x) => new R<T>(x);
}
class B extends A<B> {}
class R<T> {
@pragma('vm:prefer-inline')
R(T field);
}
class C extends B {}
class D extends C {}
// f will be inlined and T=B will be forwarded to AssertAssignable in the
// R. However B will be wrapped in the TypeRef which breaks runtime TypeCheck
// function (Instance::IsInstanceOf does not work for TypeRefs).
@pragma('vm:never-inline')
f(o) => new B().f(o);
main() {
final o = new D();
for (var i = 0; i < 10; i++) {
f(o);
}
}