Add src/test/ui regression testing for NLL
This PR changes `x.py test` so that when you are running the `ui` test suite, it will also always run `compiletest` in the new `--compare-mode=nll`, which just double-checks that when running under the experimental NLL mode, the output matches the `<source-name>.nll.stderr` file, if present.
In order to reduce the chance of a developer revolt in response to this change, this PR also includes some changes to make the `--compare-mode=nll` more user-friendly:
1. It now generates nll-specific .stamp files, and uses them (so that repeated runs can reuse previously cached results).
2. Each line of terminal output distinguishes whether we are running under `--compare-mode=nll` by printing with the prefix `[ui (nll)]` instead of just the prefix `[ui]`.
Subtask of rust-lang/rust#48879
Add rustc_trans to x.py check
r? @Mark-Simulacrum
I looked at `bootstrap/compile.rs` and `bootstrap/check.rs` to try to work out which steps were appropriate, but I'm sure I've overlooked some details here, so it's worth checking carefully I've got all the steps right (e.g. I wasn't sure whether we want to build LLVM if necessary with `x.py check`, though I thought it was probably better to than to not).
From a quick test, it seems to be working, though.
Only emit save-analysis data for `cargo build` tasks
Previously, we were emittinng analysis data for all tasks, including `doc`. That meant we got two sets of save-analysis data, one from the normal build and one from the docs. That means indexing with the RLS took twice as long and made downloads larger and build times longer.
cc https://github.com/rust-lang-nursery/rls/issues/826
r? @Mark-Simulacrum
Previously, we were emittinng analysis data for all tasks, including `doc`. That meant we got two sets of save-analysis data, one from the normal build and one from the docs. That means indexing with the RLS took twice as long and made downloads larger and build times longer.
cc https://github.com/rust-lang-nursery/rls/issues/826
rustbuild: allow building tools with debuginfo
Debugging information for the extended tools is currently disabled for
concerns about the size. This patch adds `--enable-debuginfo-tools` to
let one opt into having that debuginfo.
This is useful for debugging the tools in distro packages. We always
strip debuginfo into separate packages anyway, so the extra size is not
a concern in regular use.
Add docs for the test crate with the std docs
If the compiler docs aren't going to include the test crate then it may as well be included with std.
Fixes#49388
Debugging information for the extended tools is currently disabled for
concerns about the size. This patch adds `--enable-debuginfo-tools` to
let one opt into having that debuginfo.
This is useful for debugging the tools in distro packages. We always
strip debuginfo into separate packages anyway, so the extra size is not
a concern in regular use.
rustbuild: canonicalize prefix `install_sh`
Testing:
```
$ git diff
diff --git a/config.toml.example b/config.toml.example
index 9dd3002506..b47bc490cd 100644
--- a/config.toml.example
+++ b/config.toml.example
@@ -196,7 +196,7 @@
[install]
# Instead of installing to /usr/local, install to this path instead.
-#prefix = "/usr/local"
+prefix = "install-prefix"
# Where to install system configuration files
# If this is a relative path, it will get installed in `prefix` above
$ mkdir install-prefix
$ ./x.py install -i --stage 0 --config config.toml.example
...
$ ls install-prefix/
bin lib share
```
Closes#36989.
r? @Mark-Simulacrum
Testing:
```
$ git diff
diff --git a/config.toml.example b/config.toml.example
index 9dd3002506..b47bc490cd 100644
--- a/config.toml.example
+++ b/config.toml.example
@@ -196,7 +196,7 @@
[install]
# Instead of installing to /usr/local, install to this path instead.
-#prefix = "/usr/local"
+prefix = "install-prefix"
# Where to install system configuration files
# If this is a relative path, it will get installed in `prefix` above
$ mkdir install-prefix
$ ./x.py install -i --stage 0 --config config.toml.example
...
$ ls install-prefix/
bin lib share
```
Closes#36989.
configure.py --tools should set a list instead of a string
Currently the --tools option does not work because it is setting a string value
for 'build.tools'. It should be a list of strings instead.
Host compiler documentation: Include private items
Fixes#29893. Now that compiler documentation is being hosted, including private items seems sensible as these types are going to be being used by contributors working on the compiler.
However, including this means that doc comments that contain codeblocks with invalid Rust and can fail the documenting of a given crate (as evidenced by the changes in the second commit included in this PR). We'd need some way of ensuring that this cannot happen so that these failures don't cause documenting to fail. I'm unsure whether this change to documentation steps will cause this to happen already or if something new will be required.
r? @alexcrichton
add a dist builder to build rust-std components for the THUMB targets
the rust-std component only contains the core and compiler-builtins (+c +mem) crates
cc #49382
- I'm not entirely sure if this PR alone will produce rust-std components installable by rustup or if something else needs to be changed
- I could have done the THUMB builds in an existing builder / image; I wasn't sure if that was a good idea so I added a new image
- I could build other crates like alloc into the rust-std component but, AFAICT, that would require calling Cargo a second time (one for alloc and one for compiler-builtins), or have alloc depend on compiler-builtins (#49503 will perform that change) *and* have alloc resurface the "c" and "mem" Cargo features.
r? @alexcrichton
the goal is to build, in a single Cargo invocation, several no-std crates that we want to put in the
rust-std component of no-std targets. The nostd crate builds these crates:
- core
- compiler-builtin (with the "c" and "mem" features enabled)
- alloc
- std_unicode
