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It lets you get the contents of multiple symbols with a single TLS
lookup and interner lock, instead of one per symbol.
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opt-dist: make `artifact-dir` an absolute path for `opt-dist local`
...like for CI environments. the same logic applied as for `build_dir`. fixes the issue where some intermediate steps fail due to path being relative to an active directory
r? Kobzol
try-job: dist-x86_64-msvc
try-job: dist-x86_64-linux
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rustc-dev-guide subtree update
Subtree update of `rustc-dev-guide` to https://github.com/rust-lang/rustc-dev-guide/commit/cca233729f03d0c59456cd3e866f92681faf4c54.
Created using https://github.com/rust-lang/josh-sync.
r? ```@ghost```
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Subtree update of `rust-analyzer`
r? ```@ghost```
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fix handling of base address for TypeId allocations
This fixes the problems discovered by ````@theemathas```` in https://github.com/rust-lang/rust/pull/142789:
- const-eval would sometimes consider TypeId pointers to be null
- the type ID is different in Miri than in regular executions
Both boil down to the same issue: the TypeId "allocation" has a guaranteed 0 base address, but const-eval assumes it was non-zero (like normal allocations) and Miri randomized it (like normal allocations).
r? ````@oli-obk````
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Mitigate `#[align]` name resolution ambiguity regression with a rename
Mitigates beta regression rust-lang/rust#143834 after a beta backport.
### Background on the beta regression
The name resolution regression arises due to rust-lang/rust#142507 adding a new feature-gated built-in attribute named `#[align]`. However, unfortunately even [introducing new feature-gated unstable built-in attributes can break user code](https://www.github.com/rust-lang/rust/issues/134963) such as
```rs
macro_rules! align {
() => {
/* .. */
};
}
pub(crate) use align; // `use` here becomes ambiguous
```
### Mitigation approach
This PR renames `#[align]` to `#[rustc_align]` to mitigate the beta regression by:
1. Undoing the introduction of a new built-in attribute with a common name, i.e. `#[align]`.
2. Renaming `#[align]` to `#[rustc_align]`. The renamed attribute being `rustc_align` will not introduce new stable breakages, as attributes beginning with `rustc` are reserved and perma-unstable. This does mean existing nightly code using `fn_align` feature will additionally need to specify `#![feature(rustc_attrs)]`.
This PR is very much a short-term mitigation to alleviate time pressure from having to fully fix the current limitation of inevitable name resolution regressions that would arise from adding any built-in attributes. Long-term solutions are discussed in [#t-lang > namespacing macro attrs to reduce conflicts with new adds](https://rust-lang.zulipchat.com/#narrow/channel/213817-t-lang/topic/namespacing.20macro.20attrs.20to.20reduce.20conflicts.20with.20new.20adds/with/529249622).
### Alternative mitigation options
[Various mitigation options were considered during the compiler triage meeting](https://github.com/rust-lang/rust/issues/143834#issuecomment-3084415277), and those consideration are partly reproduced here:
- Reverting the PR doesn't seem very minimal/trivial, and carries risks of its own.
- Rename to a less-common but aim-to-stabilization name is itself not safe nor convenient, because (1) that risks introducing new regressions (i.e. ambiguity against the new name), and (2) lang would have to FCP the new name hastily for the mitigation to land timely and have a chance to be backported. This also makes the path towards stabilization annoying.
- Rename the attribute to a rustc attribute, which will be perma-unstable and does not cause new ambiguities in stable code.
- This alleviates the time pressure to address *this* regression, or for lang to have to rush an FCP for some new name that can still break user code.
- This avoids backing out a whole implementation.
### Review advice
This PR is best reviewed commit-by-commit.
- Commit 1 adds a test `tests/ui/attributes/fn-align-nameres-ambiguity-143834.rs` which demonstrates the current name resolution regression re. `align`. This test fails against current master.
- Commit 2 carries out the renames and test reblesses. Notably, commit 2 will cause `tests/ui/attributes/fn-align-nameres-ambiguity-143834.rs` to change from fail (nameres regression) to pass.
This PR, if the approach still seems acceptable, will need a beta-backport to address the beta regression.
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clippy: make tests work in stage 1
This finally fixes https://github.com/rust-lang/rust/issues/78717 :)
Similar to what Miri already does, the clippy test step needs to carefully consider which compiler is used to build clippy and which compiler is linked into clippy (and thus must be used to build the test dependencies). On top of that we have some extra complications that Miri avoided by using `cargo-miri` for building its test dependencies: we need cargo to use the right rustc and the right sysroot, but https://github.com/rust-lang/cargo/issues/4423 makes this quite hard to do. See the long comment in `src/tools/clippy/tests/compile-test.rs` for details.
Some clippy tests tried to import rustc crates; that fundamentally requires a full bootstrap loop so it cannot work in stage 1. I had to kind of guess what those tests were doing so I don't know if my changes there make any sense.
Cc ```@flip1995``` ```@Kobzol```
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Implement `check` for compiletest and RA using tool macro
Small cleanup to reduce the number of places that require custom check steps. Of course I had to include one mini hack because of Rust Analyzer.. but I think it's worth it here.
r? ````@jieyouxu````
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gpu offload host code generation
r? ghost
This will generate most of the host side code to use llvm's offload feature.
The first PR will only handle automatic mem-transfers to and from the device.
So if a user calls a kernel, we will copy inputs back and forth, but we won't do the actual kernel launch.
Before merging, we will use LLVM's Info infrastructure to verify that the memcopies match what openmp offloa generates in C++. `LIBOMPTARGET_INFO=-1 ./my_rust_binary` should print that a memcpy to and later from the device is happening.
A follow-up PR will generate the actual device-side kernel which will then do computations on the GPU.
A third PR will implement manual host2device and device2host functionality, but the goal is to minimize cases where a user has to overwrite our default handling due to performance issues.
I'm trying to get a full MVP out first, so this just recognizes GPU functions based on magic names. The final frontend will obviously move this over to use proper macros, like I'm already doing it for the autodiff work.
This work will also be compatible with std::autodiff, so one can differentiate GPU kernels.
Tracking:
- https://github.com/rust-lang/rust/issues/131513
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...like for CI environments. the same logic applied as for `build_dir`. fixes the issue where some
intermediate steps fail due to path being relative to an active directory
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Rustc pull update
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Rollup of 8 pull requests
Successful merges:
- rust-lang/rust#144144 (tests: Skip supported-crate-types test on musl hosts)
- rust-lang/rust#144159 (opt-dist: change build_dir field to be an actual build dir)
- rust-lang/rust#144162 (Debug impls for DropElaborators)
- rust-lang/rust#144189 (Add non-regression test for rust-lang/rust#144168)
- rust-lang/rust#144216 (Don't consider unstable fields always-inhabited)
- rust-lang/rust#144229 (Miri subtree update)
- rust-lang/rust#144230 (Option::as_slice: fix comment)
- rust-lang/rust#144235 (Fix run-make tests on musl hosts)
r? `@ghost`
`@rustbot` modify labels: rollup
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This reverts commit 9f3adc540b51a4c2d0472d94033f6d9147b36f6e.
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Add Deref -> DerefMut for generate_mut_trait_impl
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fix: Fix search of raw labels and lifetimes
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Pull recent changes from https://github.com/rust-lang/rust via Josh.
Upstream ref: 460259d14de0274b97b8801e08cb2fe5f16fdac5
Filtered ref: 599ee17eb87c83f97eb37fd9fe264da65d4c9461
This merge was created using https://github.com/rust-lang/josh-sync.
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This updates the rust-version file to 460259d14de0274b97b8801e08cb2fe5f16fdac5.
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Fix run-make tests on musl hosts
On musl hosts, we already set `-Ctarget-feature=-crt-static` and `IS_MUSL_HOST=1` in compiletest. However, in order for the run-make tests to compile fine on musl hosts, we need to propagate this flag in our rustc invocations to ensure we can generate cdylibs.
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Miri subtree update
r? `@ghost`
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opt-dist: change build_dir field to be an actual build dir
make it configurable so users can set build.build-dir option in bootstrap.toml
r? Kobzol
try-job: dist-x86_64-msvc
try-job: dist-x86_64-linux
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Ban projecting into SIMD types [MCP838]
Closes https://github.com/rust-lang/compiler-team/issues/838
The actual compiler change here is tiny; there's just a bazillion tests to update.
~~Since I'm sure I've missed some, for now~~
~~r ghost~~
try-job: test-various
try-job: x86_64-gnu-nopt
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On musl hosts, we already set -Ctarget-feature=-crt-static and
IS_MUSL_HOST=1 in compiletest. However, in order for the run-make tests
to compile fine on musl hosts, we need to propagate this flag in our
rustc invocations to ensure we can generate cdylibs.
Signed-off-by: Jens Reidel <adrian@travitia.xyz>
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make it configurable so users can set build.build-dir option in bootstrap.toml
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Weekly `cargo update`
Automation to keep dependencies in `Cargo.lock` current.
r? dep-bumps
The following is the output from `cargo update`:
```txt
compiler & tools dependencies:
Locking 15 packages to latest compatible versions
Updating chrono-tz v0.10.3 -> v0.10.4
Removing chrono-tz-build v0.4.1
Updating clap v4.5.40 -> v4.5.41
Updating clap_builder v4.5.40 -> v4.5.41
Updating clap_derive v4.5.40 -> v4.5.41
Updating crc32fast v1.4.2 -> v1.5.0
Updating derive_setters v0.1.7 -> v0.1.8
Updating libredox v0.1.4 -> v0.1.6
Updating measureme v12.0.1 -> v12.0.3
Removing parse-zoneinfo v0.3.1
Adding phf v0.12.1
Adding phf_shared v0.12.1
Updating rustix v1.0.7 -> v1.0.8
Updating serde_json v1.0.140 -> v1.0.141
Updating sysinfo v0.36.0 -> v0.36.1
Updating wasi-preview1-component-adapter-provider v34.0.1 -> v34.0.2
Updating winnow v0.7.11 -> v0.7.12
note: pass `--verbose` to see 39 unchanged dependencies behind latest
library dependencies:
Locking 0 packages to latest compatible versions
note: pass `--verbose` to see 3 unchanged dependencies behind latest
rustbook dependencies:
Locking 13 packages to latest compatible versions
Updating ammonia v4.1.0 -> v4.1.1
Updating cc v1.2.29 -> v1.2.30
Updating clap v4.5.40 -> v4.5.41
Updating clap_builder v4.5.40 -> v4.5.41
Updating clap_complete v4.5.54 -> v4.5.55
Updating clap_derive v4.5.40 -> v4.5.41
Updating crc32fast v1.4.2 -> v1.5.0
Updating html5ever v0.31.0 -> v0.35.0
Updating markup5ever v0.16.2 -> v0.35.0
Updating match_token v0.1.0 -> v0.35.0
Updating rustix v1.0.7 -> v1.0.8
Updating serde_json v1.0.140 -> v1.0.141
Updating winnow v0.7.11 -> v0.7.12
```
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Give a message with a span on MIR validation error
It was handy to get a source+line link for rust-lang/rust#143833, even if it's just to the function and not necessarily to the statement.
r? mir
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Add new `ignore-backends` and `needs-backends` tests annotations
Part of https://github.com/rust-lang/compiler-team/issues/891.
Next step will be to add these annotations in the files where either the output is different based on the codegen (like `asm` tests) or that are known to fail in the GCC backend.
cc `@oli-obk` `@antoyo`
r? `@Kobzol`
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bootstrap: Ignore `rust.debuginfo-level-tests` for codegen tests
As dicussed in https://github.com/rust-lang/rust/issues/61117#issuecomment-495587364, codegen tests typically depend on the raw LLVM IR output and are sensitive to debuginfo level. So do not apply `rust.debuginfo-level-tests` for codegen tests.
Before this commit:
$ ./x test --set rust.debuginfo-level-tests=2 tests/codegen --force-rerun
test result: FAILED. 654 passed; 136 failed; 75 ignored; 0 measured; 0 filtered out; finished in 3.22s
After this commit:
$ ./x test --set rust.debuginfo-level-tests=2 tests/codegen --force-rerun
NOTE: ignoring `rust.debuginfo-level-tests=2` for codegen tests
test result: ok. 790 passed; 0 failed; 75 ignored; 0 measured; 0 filtered out; finished in 3.21s
### Run this in CI?
Maybe it will make sense to add this to CI later but I think it is too early to do now before more non-codegen tests work with `rust.debuginfo-level-tests=2`.
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bootstrap: Don't trigger an unnecessary LLVM build from check builds
Coming back to r-l/r development after a few weeks away, I found a major regression in my dev workflows: running `x check compiler` (either manually or via rust-analyzer) would have the side-effect of building LLVM, even though that shouldn't be necessary.
For my main build directory this would be a minor annoyance, but for my separate rust-analyzer build directory it's a huge problem because it causes a completely separate build of LLVM, which takes a long time and should be completely unnecessary.
---
After some investigation, I tracked down the problem to the `can_skip_build` check in this code:
https://github.com/rust-lang/rust/blob/3014e79f9c8d5510ea7b3a3b70d171d0948b1e96/src/bootstrap/src/core/build_steps/compile.rs#L1382-L1396
Historically, this would skip the LLVM build for stage 0 check builds. But after the recent stage 0 std redesign and some associated check stage renumbering (e.g. rust-lang/rust#143048), the condition `builder.top_stage == build_stage` is now false, because `top_stage` is 1 (due to the renumbering) but `build_stage` is 0 (because a “stage 1” non-library check build still uses the stage 0 compiler).
---
Because this is a critical contributor roadblock for me, I have tried to fix this in a relatively narrow way. It's possible that all of this surrounding logic could be greatly simplified (especially in light of the stage redesign changes), but I didn't want this fix to be held back by scope creep.
---
(Zulip thread: https://rust-lang.zulipchat.com/#narrow/channel/326414-t-infra.2Fbootstrap/topic/Bootstrap.20incorrectly.20building.20LLVM.20for.20check.20builds/near/528991035)
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Fix ide-assist: generate Deref transitive
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Rollup of 11 pull requests
Successful merges:
- rust-lang/rust#141260 (Allow volatile access to non-Rust memory, including address 0)
- rust-lang/rust#143604 (Stabilize `const_float_round_methods`)
- rust-lang/rust#143988 ([rustdoc] Make aliases search support partial matching)
- rust-lang/rust#144078 (Fix debuginfo-lto-alloc.rs test)
- rust-lang/rust#144111 (Remove deprecated `MaybeUninit` slice methods)
- rust-lang/rust#144116 (Fixes for LLVM 21)
- rust-lang/rust#144134 (Cleanup unicode table gen)
- rust-lang/rust#144142 (Add implicit sized bound to trait ascription types)
- rust-lang/rust#144148 (Remove pretty print hack for async blocks)
- rust-lang/rust#144169 (interpret: fix TypeId pointers being considered data pointers)
- rust-lang/rust#144196 (Initialize mingw for the runner's user)
r? `@ghost`
`@rustbot` modify labels: rollup
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Initialize mingw for the runner's user
This is apparently the more proper fix to https://rust-lang.zulipchat.com/#narrow/channel/242791-t-infra/topic/Spurious.20bors.20CI.20failures/near/528915775
But let's see if it works.
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interpret: fix TypeId pointers being considered data pointers
Fixes https://github.com/rust-lang/miri/issues/4477
r? ````@oli-obk````
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Cleanup unicode table gen
Fixing clippy warnings and moving to edition 2024.
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[rustdoc] Make aliases search support partial matching
Fixes rust-lang/rust#140782.
To make this work, I moved aliases into the `searchIndex` like any other item. It links to the "original" item with a new `original` field. No so great part is that we need to have some fields like `bitIndex` to be set on the alias to make the description load to work but I consider it minor enough to be ok.
This PR voluntarily doesn't handle de-prioritization of aliases as ```@lolbinarycat``` wished to work on this so I'll leave them this part. :wink:
cc ```@lolbinarycat```
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Update LLVM submodule
Fixes for https://rust-lang.zulipchat.com/#narrow/stream/187780-t-compiler.2Fllvm/topic/Backporting.20LLVM.20fix.20for.20Wasm.20EH.3F/near/528879210.
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