CI: build CMake 3.20 to support LLVM 17
LLVM 17 will require CMake at least 3.20, so we have to go back to building our own CMake on the Linux x64 dist builder.
r? `@nikic`
Add Tests for native wasm exceptions
### Motivation
In PR #111322, I added support for native WASM exceptions. I was asked by ``@davidtwco`` to add some tests for it in a follow up PR, which seems like a very good idea.
This PR adds three tests for this feature:
* codegen: ensure the correct LLVM instructions are used
* assembly: ensure the correct WASM instructions are used
* run-make: ensure the exception handling works; the WASM code is run using a small nodejs script which demonstrates the exception handling
### Complications
There are a few changes beside adding the tests, which were necessary
* Tests for the wasm32-unknown-unknown target are (as far as I know) only run on `test-various`. Its docker image uses nodejs-15, which is very old. Experimental support for wasm-exceptions was added in nodejs16. In nodejs 18.12 (LTS), they are stable.
- --> increase nodejs to 18.12 in `test-various`
* codegen/assembly tests are not performed for the wasm32-unknown-unknown target yet
- --> add those to `test-various` as well
Due to the last point, some tests are run which have not run before (assembly+codegen tests for wasm32-unknown-unknown). I added `// ignore wasm32-bare` for those which failed
### Local testing
I run all tests locally using both `test-various` and `wasm32`. As far as I know, none of the other systems run any test for wasm32 targets.
CI: include workflow name in concurrency group
Currently, this won't change anything, because we only have one relevant workflow (`CI`), but for future proofing we should probably include the workflow name in the concurrency group.
Found by ``@klensy`` [here](https://github.com/rust-lang/rust/pull/113059#discussion_r1247213606).
Use `llvm-config` instead of `download-ci-llvm` in PGO script
This should avoid CI breakage when the LLVM stamp is updated, and also it will avoid an unnecessary LLVM download from CI.
r? `@jyn514`
Currently, this won't change anything, because we only have one relevant workflow (`CI`), but for future proofing we should probably include the workflow name in the concurrency group.
Add gha problem matcher
These regexes capture rustfmt errors, panics and regular Rust errors in CI and automatically add messages in the diff view. This should make it simpler to quickly see what went wrong without having to scroll through CI logs.
We can fine tune the regexes or add more matchers after having a look at how it actually works in practice
The relevant documentation can be found at https://github.com/actions/toolkit/blob/main/docs/problem-matchers.md
r? `@jyn514`
Replace fvdl with ffx, allow test without install
Along with replacing fvdl uses with the equivalent ffx commands, this also switches from using the install path for libstd-*.so and libtest-*.so to using the build directory (now passed on the command line). The user no longer needs to run x.py install before running tests now, and the correct libstd and libtest are detected on run instead of startup so the test runner can handle recompilations after starting the testing environment.
r? ``@tmandry``
Along with replacing fvdl uses with the equivalent ffx commands, this
also switches from using the install path for libstd-*.so and
libtest-*.so to using the build directory (now passed on the command
line). The user no longer needs to run x.py install before running tests
now, and the correct libstd and libtest are detected on run instead of
startup so the test runner can handle recompilations after starting the
testing environment.
Add support for test tmpdir to fuchsia test runner
Also format the script to keep the code nice.
This fixes the `tests/ui/std/switch-stdout.rs` test on Fuchsia.
r? `@tmandry`
CI: merge `msvc` test CI jobs
Merges `msvc` jobs together to save CI time. Currently, both runners take about 1h 15 minutes, but nowadays it should be possible to just run everything in a single job.
CI run: https://github.com/rust-lang/rust/actions/runs/5272144087/jobs/9534015536?pr=112633 (both finish under ~1h 35 minutes)
After this change, we no longer test both `x.py` and `x.ps1`, but I don't suppose that it's worth it to spend 1.5 hours of additional CI time just for that. I suggest to run all tests using e.g. `x.py` and then run just `x.ps1 test --stage 2 --force-rerun tests/<single-quick-test>`.
Also I'm not sure if it's worth it to keep using the Makefile for this.
Run tests on PGO/LTO/BOLT optimized dist artifacts
This PR adds baisc tests for the optimized dist builds on x64 Linux and Windows. A subset of the test suite is run, so it's not perfect, but it's better than the status quo (which is basically no testing at all, apart from the perf bot on Linux).
r? `@ghost`
