Apply LTO config to rustdoc
Before, the LTO configuration from `config.toml` was not applied to `rustdoc`. This provides a small perf. and binary size [win](https://github.com/rust-lang/rust/pull/112049#issuecomment-2605131041) for doc builds.
Since this is configured with Cargo profiles and not rustflags, it should not break tool build cache (https://github.com/rust-lang/rust/pull/131155). I tried to run `x test miri`, `x test rustdoc` and `x test miri` and nothing was rebuilt.
r? `@onur-ozkan`
Remove -Zinline-in-all-cgus and clean up tests/codegen-units/
Implementation of https://github.com/rust-lang/compiler-team/issues/814
I've taken some liberties with cleaning up the CGU partitioning tests, because that's the only place this flag was used and also mattered. I've often fought a lot with the contents of `tests/codegen-units` and it has never been clear to me when a test failure indicates a problem with my changes as opposed to a test just needing to be manually blessed. Hopefully the combination of the new README, new comments, and using `-Zprint-mono-items=lazy` in the partitioning tests improves that.
I've also deleted some of the `tests/run-make/sepcomp` tests. I think all the "sepcomp" tests have been obviated for years by better-designed (less flaky, clearer failures) test suites, but here I'm just deleting the ones I'm confident in.
Windows x86: Change i128 to return via the vector ABI
Clang and GCC both return `i128` in xmm0 on windows-msvc and windows-gnu. Currently, Rust returns the type on the stack. Add a calling convention adjustment so we also return scalar `i128`s using the vector ABI, which makes our `i128` compatible with C.
In the future, Clang may change to return `i128` on the stack for its `-msvc` targets (more at [1]). If this happens, the change here will need to be adjusted to only affect MinGW.
Link: https://github.com/rust-lang/rust/issues/134288 (does not fix) [1]
try-job: x86_64-msvc
try-job: x86_64-msvc-ext1
try-job: x86_64-mingw-1
try-job: x86_64-mingw-2
Add some tracing to core bootstrap logic
Follow-up to #135391.
### Summary
Add some initial tracing logging to bootstrap, focused on the core logic (in this PR).
Also:
- Adjusted tracing-tree style to not use indent lines (I found that more distracting than helpful).
- Avoid glob-importing `tracing` items.
- Improve the rustc-dev-guide docs on bootstrap tracing.
### Example output
```bash
$ BOOTSTRAP_TRACING=bootstrap=TRACE ./x check src/bootstrap
```
r? bootstrap
compiler_fence: fix example
The old example was wrong, an acquire fence is required in the signal handler. To make the point more clear, I changed the "data" variable to use non-atomic accesses.
Fixes https://github.com/rust-lang/rust/issues/133014
Fix tests on LLVM 20
For sparcv8plus.rs, duplicate the test for LLVM 19 and LLVM 20. LLVM 20 resolves one of the FIXME in the test.
For x86_64-bigint-add.rs split the check lines for LLVM 19 and LLVM 20. The difference in codegen here is due to a difference in unroll factor, which I believe is not what the test is interested in.
Fixes https://github.com/rust-lang/rust/issues/132957.
Fixes https://github.com/rust-lang/rust/issues/133754.
Get rid of `mir::Const::from_ty_const`
This function is strange, because it turns valtrees into `mir::Const::Value`, but the rest of the const variants stay as type system consts.
All of the callsites except for one in `instsimplify` (array length simplification of `ptr_metadata` call) just go through the valtree arm of the function, so it's easier to just create a `mir::Const` directly for those.
For the instsimplify case, if we have a type system const we should *keep* having a type system const, rather than turning it into a `mir::Const::Value`; it doesn't really matter in practice, though, bc `usize` has no padding, but it feels more principled.
It seems one can't overwrite a cache entry:
```
Failed to save: Unable to reserve cache with key linkcheck--0.8.1, another job may be creating this cache. More details: Cache already exists. Scope: refs/heads/master, Key: linkcheck--0.8.1, Version: 33f8fd511bed9c91c40778bc5c27cb58425caa894ab50f9c5705d83cb78660e0
Warning: Cache save failed.
```
A proper solution is to use `restore-keys`:
https://github.com/actions/cache/blob/main/tips-and-workarounds.md#update-a-cache
Reword resolve errors caused by likely missing crate in dep tree
Reword label and add `help`:
```
error[E0432]: unresolved import `some_novel_crate`
--> f704.rs:1:5
|
1 | use some_novel_crate::Type;
| ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `some_novel_crate`
|
= help: if you wanted to use a crate named `some_novel_crate`, use `cargo add some_novel_crate` to add it to your `Cargo.toml`
```
Fix#133137.
Add `#[optimize(none)]`
cc #54882
This extends the `optimize` attribute to add `none`, which corresponds to the LLVM `OptimizeNone` attribute.
Not sure if an MCP is required for this, happy to file one if so.
Update cargo
5 commits in 045bf21b36a2e1f3ed85e38278d1c3cc4305e134..cecde95c119a456c30e57d3e4b31fff5a7d83df4
2025-01-17 14:59:36 +0000 to 2025-01-24 17:15:24 +0000
- Remove unused `-C link-arg=-fuse-ld=lld` (rust-lang/cargo#15097)
- Remove `unsafe` by using `LazyLock` (rust-lang/cargo#15096)
- Print globs when workspace members can't be found (rust-lang/cargo#15093)
- Make --allow-dirty imply --allow-staged (rust-lang/cargo#15013)
- fix(config): When merging, replace rather than combining specific configuration keys (rust-lang/cargo#15066)
Rollup of 9 pull requests
Successful merges:
- #135415 (Add `File already exists` error doc to `hard_link` function)
- #135581 (Separate Builder methods from tcx)
- #135728 (document order of items in iterator from drain)
- #135749 (Do not assume const params are printed after type params)
- #135829 (Rustc dev guide subtree update)
- #135938 (Add memory layout documentation to generic NonZero<T>)
- #135949 (Use short type string in E0308 secondary span label)
- #135976 (Don't drop types with no drop glue when building drops for tailcalls)
- #135998 ([rustdoc] Fix indent of trait items on mobile)
r? `@ghost`
`@rustbot` modify labels: rollup
bors
许杰友 Jieyou Xu (Joe)
yegeunyang
Mohammad Omidvar
Michael Goulet
Michael Howell
Ralf Jung
Boxy
Joren-vanGoethem
Jakub Beránek
León Orell Valerian Liehr
Noah Lev
Tshepang Mbambo
Eric Huss
Martin Liska
Lukas Wirth
Ben Kimock
The Miri Cronjob Bot
Yuki Okushi