rustbuild: Add cli option --keep-stage
This option is intended to be used like:
./x.py build --stage 1 --keep-stage 0
Which skips all stage 0 steps, so that stage 1 can be recompiled
directly (even if for example libcore has changes).
This is useful when working on `cfg(not(stage0))` parts of the
libraries or when re-running stage 1 tests in libraries in general.
Fixes#38326
libtest: add --list option to list tests and benchmarks
This option lists all the tests and benchmarks a binary provides without running any of them.
By default the listing is sent to stdout (intended for human consumption), but if `--logfile` is also specified, it is also written there in an easily parsable form.
If filters are specified, they're applied before the output is emitted. The human output will also include a summary unless `-q` is specified.
Redox Support Preview
# Important - This is only a preview of a working `sys::redox`.
Compiling the Redox default distribution with this `libstd` results in a fully functioning distribution. As such, all further changes would be cosmetic or implementing features that have not been used by the default distribution (of which there are only a small number).
I do not expect this to be merged, but would like to discuss how it may be improved and get feedback.
There are a few `unimplemented!()` - `cloexec` for example. I have documented them below. These would be resolved before desiring a merge.
There are also issues with how the Redox syscall library is called - currently I am using a re-export in `libc` but that probably would not be desired.
After the fix of #37453 in PR #37369, instead of pointing at only the
cast type, point at the full cast span when a cast needs a dereference:
```
error: casting `&{float}` as `f32` is invalid
--> ../../../src/test/ui/mismatched_types/cast-rfc0401.rs:81:30
|
81 | vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>();
| ^^^^^^^^ cannot cast `&{float}` as `f32`
|
help: did you mean `*s`?
--> ../../../src/test/ui/mismatched_types/cast-rfc0401.rs:81:30
|
81 | vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>();
| ^
```
instead of
```
error: casting `&{float}` as `f32` is invalid
--> ../../../src/test/ui/mismatched_types/cast-rfc0401.rs:81:35
|
81 | vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>();
| - ^^^
| |
| |
| did you mean `*s`?
| cannot cast `&{float}` as `f32`
```
This commit adds support for sccache, a ccache-like compiler which works on MSVC
and stores results into an S3 bucket. This also switches over all Travis and
AppVeyor automation to using sccache to ensure a shared and unified cache over
time which can be shared across builders.
The support for sccache manifests as a new `--enable-sccache` option which
instructs us to configure LLVM differently to use a 'sccache' binary instead of
a 'ccache' binary. All docker images for Travis builds are updated to download
Mozilla's tooltool builds of sccache onto various containers and systems.
Additionally a new `rust-lang-ci-sccache` bucket is configured to hold all of
our ccache goodies.
This option lists all the tests and benchmarks a binary provides. By default the listing
is sent to stdout, but if --logfile is also specified, it is written there.
If filters are specified, they're applied before the output is emitted.
[LLVM 4.0] Update LLVM global variable debug info API for 4.0
This teaches Rust about an LLVM 4.0 API change for creating debug info
for global variables.
This change was made in upstream LLVM patch https://reviews.llvm.org/D20147
This is almost a 1:1 copy of how clang did it in http://reviews.llvm.org/D20415
- The discriminant must be first in all variants.
- The loop responsible for patching enum variants when the discriminant is enlarged was nonfunctional.
