Files
carbon-lang/explorer/testdata/impl_match/build_tree.carbon
T
Jon Ross-Perkins 82f33ff384 Use new test framework in explorer to reduce per-test overhead (#2811)
Isolating test execution time (no build time included):

- Linux, `lit` test-per-file: Elapsed time: 28.214s, Critical Path: 13.97s
- Linux, `cc_test`-per-file: Elapsed time: 11.534s, Critical Path: 6.05s
- Linux, merged `cc_test` with 50 shards: Elapsed time: 11.677s, Critical Path: 11.17s
- Mac, `lit` test-per-file: Elapsed time: 295.686s, Critical Path: 20.00s
- Mac, `cc_test`-per-file: Elapsed time: 55.788s, Critical Path: 3.81s
- Mac, merged `cc_test` with 50 shards: Elapsed time: 16.269s, Critical Path: 7.54s

In GH actions:

- [Before](https://github.com/carbon-language/carbon-lang/actions/runs/4866602695/jobs/8678306144?pr=2799):
  - test / test (ubuntu-22.04, fastbuild) (pull_request_target) Successful in 20m
  - test / test (ubuntu-22.04, opt) (pull_request_target) Successful in 15m
  - test / test (macos-12, fastbuild) (pull_request_target) Successful in 36m
  - test / test (macos-12, opt) (pull_request_target) Successful in 21m
- [After](https://github.com/carbon-language/carbon-lang/actions/runs/4875154751/jobs/8697004066?pr=2811):
  - test / test (ubuntu-22.04, fastbuild) (pull_request_target) Successful in 10m
  - test / test (ubuntu-22.04, opt) (pull_request_target) Successful in 9m
  - test / test (macos-12, fastbuild) (pull_request_target) Successful in 12m
  - test / test (macos-12, opt) (pull_request_target) Successful in 9m

I'm still leaving a handful of `lit` tests to test end-to-end binary execution. This is why testdata directories are split (`lit` tests next to the `explorer` binary, the `cc_test`s next to `ParseAndExecute`).
2023-05-15 16:23:59 -07:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// CHECK:STDOUT: result: 0
package ExplorerTest api;
class S(T:! type) {}
class Z {}
class Tree(L:! type, R:! type) {}
class Leaf {}
interface Foo(T:! type) {}
impl forall [U:! type, T:! Foo(Tree(U, U))] S(T) as Foo(U) {}
alias Level1 = Tree(Leaf, Leaf);
alias Level2 = Tree(Level1, Level1);
alias Level3 = Tree(Level2, Level2);
alias Level4 = Tree(Level3, Level3);
alias Level5 = Tree(Level4, Level4);
impl Z as Foo(Level5) {}
fn F[T:! Foo(Leaf)](x: T) {}
fn Main() -> i32 {
var n: S(S(S(S(S(Z))))) = {};
F(n);
return 0;
}