Support for Fuchsia RISC-V target
Fuchsia is in the process of implementing the RISC-V support. This change implements the minimal Rust compiler support. The support for building runtime libraries will be implemented in follow up changes once Fuchsia SDK has the RISC-V support.
Remove `box_syntax`
r? `@Nilstrieb`
This removes the feature `box_syntax`, which allows the use of `box <expr>` to create a Box, and finalises removing use of the feature from the compiler. `box_patterns` (allowing the use of `box <pat>` in a pattern) is unaffected.
It also removes `ast::ExprKind::Box` - the only way to create a 'box' expression now is with the rustc-internal `#[rustc_box]` attribute.
As a temporary measure to help users move away, `box <expr>` now parses the inner expression, and emits a `MachineApplicable` lint to replace it with `Box::new`
Closes#49733
Remove `llvm.skip-rebuild` option
This was added to in 2019 to speed up rebuild times when LLVM was modified. Now that download-ci-llvm exists, I don't think it makes sense to support an unsound option like this that can lead to miscompiles; and the code cleanup is nice too.
r? `@Mark-Simulacrum` cc `@varkor` #65612
Fuchsia is in the process of implementing the RISC-V support. This
change implements the minimal Rust compiler support. The support for
building runtime libraries will be implemented in follow up changes
once Fuchsia SDK has the RISC-V support.
add -Zexport-executable-symbols to unstable book
This flag has been extremely useful to me, but it's hard to discover. The text contains a bunch of terms that hopefully a search engine will pick up on when someone searches for this functionality.
Add support for QNX Neutrino to standard library
This change:
- adds standard library support for QNX Neutrino (7.1).
- upgrades `libc` to version `0.2.139` which supports QNX Neutrino
`@gh-tr`
⚠️ Backtraces on QNX require https://github.com/rust-lang/backtrace-rs/pull/507 which is not yet merged! (But everything else works without these changes) ⚠️
Tested mainly with a x86_64 virtual machine (see qnx-nto.md) and partially with an aarch64 hardware (some tests fail due to constrained resources).
This was added to in 2019 to speed up rebuild times when LLVM was
modified. Now that download-ci-llvm exists, I don't think it makes sense
to support an unsound option like this that can lead to miscompiles; and
the code cleanup is nice too.
Do some cleanup of doc/index.md
I think a lot of people get to this landing page from `rustup doc`, and it's a bit tricky to find some useful information. I attempted to clean it up here a bit, from the commit message:
- Add quick link to API docs
- Add marker for external links, to help offline users
- Add information about using 'cargo doc' and the playground
- Clean up some of the wording
- Update body & header style to match rustdoc defaults
- Bump heading levels so main page header is 1, others are 2 (all were level 1 before)
Update `fuchsia-test-runner.py` and docs
This updates the test runner to the latest version of the SDK and fixes debugging support for Rust source code.
r? ``@tmandry``
- Add quick link to API docs
- Add marker for external links, to help offline users
- Add information about using 'cargo doc' and the playground
- Clean up some of the wording
- Update body & header style to match rustdoc defaults
Add `kernel-address` sanitizer support for freestanding targets
This PR adds support for KASan (kernel address sanitizer) instrumentation in freestanding targets. I included the minimal set of `x86_64-unknown-none`, `riscv64{imac, gc}-unknown-none-elf`, and `aarch64-unknown-none` but there's likely other targets it can be added to. (`linux_kernel_base.rs`?) KASan uses the address sanitizer attributes but has the `CompileKernel` parameter set to `true` in the pass creation.
Most tests involving save-analysis were removed, but I kept a few where
the `-Zsave-analysis` was an add-on to the main thing being tested,
rather than the main thing being tested.
For `x.py install`, the `rust-analysis` target has been removed.
For `x.py dist`, the `rust-analysis` target has been kept in a
degenerate form: it just produces a single file `reduced.json`
indicating that save-analysis has been removed. This is necessary for
rustup to keep working.
Closes#43606.
Update broken link in cargo style guide
Toml now uses [toml.io](https://toml.io) for released specifications and the github repo for development. Also the old link was for the 0.4 specification, while cargo uses toml_edit, which uses toml 1.0 (reference:
https://github.com/toml-rs/toml/blob/main/crates/toml_edit/CHANGELOG.md#030---2021-09-13). Finally the discussion of "Bare keys" vs "Quoted keys" has moved from the `#table` section to `#keys`.
Recognize all bells and whistles that LLVM's XRay pass is capable of.
The always/never settings are a bit dumb without attributes but they're
still there. The default instruction count is chosen by the compiler,
not LLVM pass. We'll do it later.
- Remove logic that limits const eval based on terminators, and use the
stable metric instead (back edges + fn calls)
- Add unstable flag `tiny-const-eval-limit` to add UI tests that do not
have to go up to the regular 2M step limit
Update books
## rust-lang/book
1 commits in 2bd5d42c9956369132228da6409f0e68da56c51a..2cd1b5593d26dc6a03c20f8619187ad4b2485552
2023-01-12 14:47:47 UTC to 2023-01-12 14:47:47 UTC
- Typo (rust-lang/book#3457)
## rust-lang/nomicon
2 commits in 8ca261268068d80c0969260fff15199bad87b587..960d610e7f33889a2577f5f17c26f0d5c82b30df
2023-01-06 11:51:41 UTC to 2023-01-05 10:20:31 UTC
- vec/raw: Simplify `RawVec::grow` (rust-lang/nomicon#392)
- borrow-splitting: Use `take` instead of `replace` (rust-lang/nomicon#391)
## rust-lang/reference
4 commits in 3ae62681ff236d5528ef7c8c28ba7c6b2ecc6731..2cb0ed9ba56360949f492f9866afe8c293f9f9da
2023-01-13 03:16:35 UTC to 2023-01-07 00:08:06 UTC
- Update field-expr.md (rust-lang/reference#1318)
- Update documentation for arbitrary_enum_discriminant feature (rust-lang/reference#1055)
- Add links to definitions of terminology ... (rust-lang/reference#1315)
- Enable triagebot shortcuts (rust-lang/reference#1314)
## rust-lang/rust-by-example
2 commits in 8888f9428fe9a48f31de6bd2cef9b9bf80791edc..a9fb7d13eadfcc5f457962731f105b97f9a7474a
2023-01-14 10:25:39 UTC to 2023-01-11 18:25:42 UTC
- get_or_insert example: print my_fruit as intended (rust-lang/rust-by-example#1664)
- Update print.md (rust-lang/rust-by-example#1663)
## rust-lang/rustc-dev-guide
8 commits in b3e2a6e6c8a3aae5b5d950c63046f23bae07096d..7352353ae91c48b136d2ca7d03822e1448165e1e
2023-01-14 20:34:23 UTC to 2023-01-02 23:35:09 UTC
- fix examples for rustc 1.68.0-nightly (935dc0721 2022-12-19) (#1556) (rust-lang/rustc-dev-guide#1557)
- Update incremental-compilation-in-detail.md (rust-lang/rustc-dev-guide#1553)
- Link to the youtube recording of my talk, not the summary (rust-lang/rustc-dev-guide#1554)
- Change `src/test` to `tests` (rust-lang/rustc-dev-guide#1547)
- add full name for ICE (rust-lang/rustc-dev-guide#1552)
- Fix incorrect links (rust-lang/rustc-dev-guide#1549)
- fix rebase link (rust-lang/rustc-dev-guide#1546)
- Add a section for how to review code more easily (rust-lang/rustc-dev-guide#1538)
