Previously, using unknown as the vendor value would lead to the same
result, but with the multiarch runtimes support in Clang, the target is
now used to locate the runtime libraries and so the format is important.
The denormalized format with omitted vendor component is the format we
use with Clang and should be using for Rust as well.
Add CI test harness for `thumb*` targets. [IRR-2018-embedded]
This pull request will do the following (rather trivial) changes:
- Fix#52163. In other words, we enabled `./x.py test src/test/run-make` for `no_std` targets.
- Modify `dist-various-1` Dockerfile.
- CI now performs `run-make` test run on the targets below:
- `thumbv6m-none-eabi`
- `thumbv7m-none-eabi`
- `thumbv7em-none-eabi`
- `thumbv7em-none-eabihf`.
- ~~Add `thumb-none` Dockerfile.~~
- ~~Initially, `thumbv7m-none-eabi`, `thumbv7em-none-eabi` and `thumbv7em-none-eabihf` are included as the tested target. `thumbv6m-none-eabi` is disabled for now because LLVM support is not certain.~~
- ~~Add `thumb-none` to .travis.yml~~
Note:
- `run-make` tests are not implemented yet. This PR is test harness only.
The amount of change is very small, but I'd like to open the pull request while the change is trivial.
Because I'm not very used to pull request process, I want to make a small progress first. This PR will be a foundation for later additions.
CC @kennytm @jamesmunns @nerdyvaishali
This should greatly reduce the commits on the rust-toolstate repository.
`publish_toolstate.py` defaults to keep the old status if a new one is not
found, so nothing needs to be changed to that file.
Don't require clippy/miri for beta
r? @kennytm
cc @alexcrichton
I'm trying this out locally atm to see if it works as I think it should. Not sure how to test it for real except wait for the next beta.
fixes#50557
Retry when downloading the Docker cache.
As a safety measure, prevent spuriously needing to rebuild the docker image in case the network was reset while downloading.
Also, adjusted the retry function to insert a sleep between retries, because retrying immediately will often just hit the same issue.
Prevent spuriously needing to rebuild the docker image when the network
was down.
Also, adjusted the retry function to insert a sleep between retries,
because retrying immediately will often just hit the same issue.
Currently on CI we predominately compile LLVM with the default system compiler
which means gcc on Linux, some version of Clang on OSX, MSVC on Windows, and
gcc on MinGW. This commit switches Linux, OSX, and Windows to all use Clang
6.0.0 to build LLVM (aka the C/C++ compiler as part of the bootstrap). This
looks to generate faster code according to #49879 which translates to a faster
rustc (as LLVM internally is faster)
The major changes here were to the containers that build Linux releases,
basically adding a new step that uses the previous gcc 4.8 compiler to compile
the next Clang 6.0.0 compiler. Otherwise the OSX and Windows scripts have been
updated to download precompiled versions of Clang 6 and configure the build to
use them.
Note that `cc` was updated here to fix using `clang-cl` with `cc-rs` on MSVC, as
well as an update to `sccache` on Windows which was needed to correctly work
with `clang-cl`. Finally the MinGW compiler is entirely left out here
intentionally as it's currently thought that Clang can't generate C++ code for
MinGW and we need to use gcc, but this should be verified eventually.
Add a CI job that makes sure rustc builds with parallel queries enabled.
This shouldn't take up too much CI time `:)`
cc https://github.com/rust-lang/rust/issues/48607
cc @Zoxc
r? @alexcrichton
std: Minimize size of panicking on wasm
This commit applies a few code size optimizations for the wasm target to
the standard library, namely around panics. We notably know that in most
configurations it's impossible for us to print anything in
wasm32-unknown-unknown so we can skip larger portions of panicking that
are otherwise simply informative. This allows us to get quite a nice
size reduction.
Finally we can also tweak where the allocation happens for the
`Box<Any>` that we panic with. By only allocating once unwinding starts
we can reduce the size of a panicking wasm module from 44k to 350 bytes.
Cross-compile builder to Windows for PRs on Travis
I chose a completely arbitrary windows target here (I have no idea what's best, we could do multiple -- they are relatively fast).
This commit applies a few code size optimizations for the wasm target to
the standard library, namely around panics. We notably know that in most
configurations it's impossible for us to print anything in
wasm32-unknown-unknown so we can skip larger portions of panicking that
are otherwise simply informative. This allows us to get quite a nice
size reduction.
Finally we can also tweak where the allocation happens for the
`Box<Any>` that we panic with. By only allocating once unwinding starts
we can reduce the size of a panicking wasm module from 44k to 350 bytes.
Merge the std_unicode crate into the core crate
[The standard library facade](https://github.com/rust-lang/rust/issues/27783) has historically contained a number of crates with different roles, but that number has decreased over time. `rand` and `libc` have moved to crates.io, and [`collections` was merged into `alloc`](https://github.com/rust-lang/rust/pull/42648). Today we have `core` that applies everywhere, `std` that expects a full operating system, and `alloc` in-between that only requires a memory allocator (which can be provided by users)… and `std_unicode`, which doesn’t really have a reason to be separate anymore. It contains functionality based on Unicode data tables that can be large, but as long as relevant functions are not called the tables should be removed from binaries by linkers.
This deprecates the unstable `std_unicode` crate and moves all of its contents into `core`, replacing them with `pub use` reexports. The crate can be removed later. This also removes the `CharExt` trait (replaced with inherent methods in libcore) and `UnicodeStr` trait (merged into `StrExt`). There traits were both unstable and not intended to be used or named directly.
A number of new items are newly-available in libcore and instantly stable there, but only if they were already stable in libstd.
Fixes#49319.
