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Update LLVM to 19.1.3
Closes #131031.
r? nikic
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Update cargo
18 commits in e75214ea4936d2f2c909a71a1237042cc0e14b07..0310497822a7a673a330a5dd068b7aaa579a265e
2024-10-25 16:34:32 +0000 to 2024-11-01 19:27:56 +0000
- Add more metadata to `rustc_fingerprint` (rust-lang/cargo#14761)
- test(rustfix): switch to a simpler case for dedup-suggestions (rust-lang/cargo#14765)
- chore(deps): update rust crate security-framework to v3 (rust-lang/cargo#14766)
- chore(deps): update rust crate gix to 0.67.0 (rust-lang/cargo#14762)
- fix(util): Respect all `..`s in `normalize_path` (rust-lang/cargo#14750)
- test(doc): Resolve flaky test (rust-lang/cargo#14760)
- refactor(test): Remove dead 'expect_stdout_contains_n' check (rust-lang/cargo#14759)
- add unstable -Zroot-dir flag to configure the path from which rustc should be invoked (rust-lang/cargo#14752)
- docs(resolver): Further v3 prep (rust-lang/cargo#14753)
- fix: track version in fingerprint dep-info files (rust-lang/cargo#14751)
- test: Remove unused msrv-policy (rust-lang/cargo#14748)
- download targeted transitive deps of with artifact deps' target platform (rust-lang/cargo#14723)
- Remove requirement for --target when invoking Cargo with -Zbuild-std (rust-lang/cargo#14317)
- docs(fingerprint): document the encoding of Cargo's depinfo (rust-lang/cargo#14745)
- Allow build scripts to report error messages through `cargo::error` (rust-lang/cargo#14743)
- fix(publish): Downgrade version-exists error to warning on dry-run (rust-lang/cargo#14742)
- fix: clean up for deprecated and removed commands (rust-lang/cargo#14739)
- Deprecate `cargo verify-project` (rust-lang/cargo#14736)
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Rollup of 14 pull requests
Successful merges:
- #131829 (Remove support for `-Zprofile` (gcov-style coverage instrumentation))
- #132369 (style-guide: Only use the new binop heuristic for assignments)
- #132383 (Implement suggestion for never type fallback lints)
- #132413 (update offset_of! docs to reflect the stabilization of nesting)
- #132438 (Remove unncessary option for default rust-analyzer setting)
- #132439 (Add `f16` and `f128` to `invalid_nan_comparison`)
- #132444 (rustdoc: Directly use rustc_abi instead of reexports)
- #132445 (Cleanup attributes around unchecked shifts and unchecked negation in const)
- #132448 (Add missing backtick)
- #132450 (Show actual MIR when MIR building forgot to terminate block)
- #132451 (remove some unnecessary rustc_allow_const_fn_unstable)
- #132455 (make const_alloc_layout feature gate only about functions that are already stable)
- #132456 (Move remaining inline assembly test files into asm directory)
- #132459 (feat(byte_sub_ptr): unstably add ptr::byte_sub_ptr)
r? `@ghost`
`@rustbot` modify labels: rollup
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feat(byte_sub_ptr): unstably add ptr::byte_sub_ptr
This is an API that naturally should exist as a combination of byte_offset_from and sub_ptr
both existing (they showed up at similar times so this union was never made). Adding these
is a logical (and perhaps final) precondition of stabilizing ptr_sub_ptr (https://github.com/rust-lang/rust/issues/95892).
Original PR by ``@Gankra`` (https://github.com/rust-lang/rust/pull/121919), I am just reviving it. The 2nd commit (with a small docs tweak) is by me.
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Move remaining inline assembly test files into asm directory
Before:
```
tests/assembly/asm/*
tests/assembly/asm-comments.rs
tests/codegen/asm-target-clobbers.rs
tests/codegen/asm-goto.rs
tests/codegen/asm-maybe-uninit.rs
tests/codegen/asm-msp430-clobbers.rs
tests/codegen/asm-options.rs
tests/codegen/asm-clobbers.rs
tests/codegen/asm-may_unwind.rs
tests/codegen/asm-arm64ec-clobbers.rs
tests/codegen/asm-powerpc-clobbers.rs
tests/codegen/asm-sanitize-llvm.rs
tests/codegen/asm-s390x-clobbers.rs
tests/codegen/asm-clobber_abi.rs
tests/codegen/asm-multiple-options.rs
tests/codegen/global_asm.rs
tests/codegen/global_asm_include.rs
tests/codegen/global_asm_x2.rs
tests/ui/asm/*
```
After:
```
tests/assembly/asm/*
tests/codegen/asm/*
tests/ui/asm/*
```
I moved the remaining standalone test files into the asm directory, and then either removed the "asm-" suffix or for x86-specific registers tests replaced the "asm-" suffix with the "x86-" suffix.
(Then I noticed that there is no test for clobber_abi for already stabilized aarch64, arm, riscv, and loongarch64 asm... I don't believe there is a problem like https://github.com/rust-lang/rust/pull/131332, but I plan to add tests for them later.)
r? ``@Amanieu``
``@rustbot`` label +A-inline-assembly
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make const_alloc_layout feature gate only about functions that are already stable
The const_alloc_layout feature gate has two kinds of functions: those that are stable, but not yet const-stable, and those that are fully unstable.
I think we should split that up. So this PR makes const_alloc_layout just about functions that are already stable but waiting for const-stability; all the other functions now have their constness guarded by the gate that also guards their regular stability.
Cc https://github.com/rust-lang/rust/issues/67521
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r=tgross35
remove some unnecessary rustc_allow_const_fn_unstable
These are either unstable functions that don't need the attribute, or the attribute refers to a feature that is already stable.
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Show actual MIR when MIR building forgot to terminate block
This makes it significantly easier to debug bugs of this kind.
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Add missing backtick
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Cleanup attributes around unchecked shifts and unchecked negation in const
The underlying intrinsic is marked as "safe to expose on stable", so we shouldn't need any `rustc_allow_const_fn_unstable(unchecked_shifts)` anywhere. However, bootstrap rustc doesn't yet have the new const stability checks, so these changes only apply under `cfg(not(bootstrap))`.
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rustdoc: Directly use rustc_abi instead of reexports
rustc_target reexports a lot of things that are in rustc_abi, but that will be over soon and now is probably a good time to switch. Uses of rustc_target remain where they inquire about the target tuple.
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Add `f16` and `f128` to `invalid_nan_comparison`
Currently `f32_nan` and `f64_nan` are used to provide the `invalid_nan_comparison` lint. Since we have `f16_nan` and `f128_nan`, hook these up so the new float types get the same lints.
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Remove unncessary option for default rust-analyzer setting
In favor of https://github.com/rust-lang/rust-analyzer/pull/17888
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update offset_of! docs to reflect the stabilization of nesting
this seems to have been missed.
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r=WaffleLapkin
Implement suggestion for never type fallback lints
r? ```@WaffleLapkin```
Just opening this up for vibes; it's not done yet. I'd still like to make this suggestable in a few more cases before merge:
- [x] Try to annotate `_` -> `()`
- [x] Try to annotate local variables if they're un-annotated: `let x = ...` -> `let x: () = ...`
- [x] Try to annotate the self type of a `Trait::method()` -> `<() as Trait>::method()`.
The only other case we may want to suggest is a missing turbofish, like `f()` -> `f::<()>()`. That may be possible, but seems overly annoying.
This partly addresses https://github.com/rust-lang/rust/issues/132358; the other half of fixing that would be to make the error message a bit better, perhaps just special casing the `?` operator 🤔 I don't think I'll do that part.
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joshtriplett:style-guide-binop-heuristic-assignment-only, r=calebcartwright
style-guide: Only use the new binop heuristic for assignments
This avoids pathological cases where chains of binops get progressively
deeper.
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Remove support for `-Zprofile` (gcov-style coverage instrumentation)
Tracking issue: #42524
MCP: https://github.com/rust-lang/compiler-team/issues/798
---
This PR removes the unstable `-Zprofile` flag, which enables ”gcov-style” coverage instrumentation, along with its associated `-Zprofile-emit` configuration flag.
(The profile flag predates and is almost entirely separate from the stable `-Cinstrument-coverage` flag.)
Notably, the `-Zprofile` flag:
- Is largely untested in-tree, having only one run-make test that does not check whether its output is correct or useful.
- Has no known maintainer.
- Has seen no push towards stabilization.
- Has at least one severe regression reported in 2022 that apparently remains unaddressed.
- #100125
- Is confusingly named, since it appears to be more about coverage than performance profiling, and has nothing to do with PGO.
- Is fundamentally limited by relying on counters auto-inserted by LLVM, with no knowledge of Rust beyond debuginfo.
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Double-check conditional constness in MIR
To prevent any unchecked `~const` bounds from leaking through during MIR lowering.
If this check fails, it will eventually just delay a bug, but for now it reports errors. That error reporting may be redundant if we're calling it from code that already doesn't allow `~const` (i.e. when the `effects` and `const_trait_impl` gates are disabled), but I don't think it's that big of a deal.
edit: This also makes sure that we issue a const stability error if we encounter *any* function with const conditions when `const_trait_impl` is not enabled. This ensures that that feature remains airtight.
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rustc_target reexports a lot of things that are in rustc_abi, but
that will be over soon and now is probably a good time to switch.
Uses of rustc_target remain where they inquire about the target tuple.
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unless const_trait_impl is enabled
This will help us make sure that we never leak any conditionally const
functions into stable.
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To prevent any conditional constness from leaking through during MIR lowering
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Some where clause lowering simplifications
Rename `PredicateFilter::SelfThatDefines` to `PredicateFilter::SelfTraitThatDefines` to make it clear that it's only concerned with converting *traits*, and make it do a bit less work when converting bounds.
Also, make the predicate filter matching in `probe_ty_param_bounds_in_generics` explicit, and simply the args it receives a bit.
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allocation
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This is an API that naturally should exist as a combination of byte_offset_from and sub_ptr
both existing (they showed up at similar times so this union was never made). Adding these
is a logical (and perhaps final) precondition of stabilizing ptr_sub_ptr (#95892).
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stable
the rest has their constness guarded by their usual feature gate
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can get rid of a bunch of attributes
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This makes it significantly easier to debug bugs of this kind.
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Remove support for decompressing dylib metadata
We haven't been compressing dylib metadata for a while now. Removing decompression support will regress error messages about an incompatible rustc version being used, but dylibs are pretty rare anyway.
Fixes https://github.com/rust-lang/rust-analyzer/issues/18451
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Use protected visibility when building rustc with LLD
https://github.com/rust-lang/compiler-team/issues/782
I wasn't sure about having two commits in a PR, but I figured, at least initially it might make sense to discuss these commits together. Happy to squash, or move the second commit to a separate PR.
I contemplated trying to enable protected visibility for more cases when LLD will be used other than just `-Zlinker-features=+lld`, but that would be more a complex change that probably still wouldn't cover all cases when LLD is used, so went with the simplest option of just checking if the linker-feature is enabled.
r? lqd
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Currently `f32_nan` and `f64_nan` are used to provide the
`invalid_nan_comparison` lint. Since we have `f16_nan` and `f128_nan`,
hook these up so the new float types get the same lints.
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Rollup of 9 pull requests
Successful merges:
- #131168 (Fix `target_os` for `mipsel-sony-psx`)
- #132209 (Fix validation when lowering `?` trait bounds)
- #132294 (Bump Fuchsia)
- #132357 (Improve missing_abi lint)
- #132385 (compiler: Move `rustc_target::spec::abi::Abi` to `rustc_abi::ExternAbi`)
- #132403 (continue `TypingMode` refactor)
- #132417 (macOS: Document the difference between Clang's `-darwin` and `-macosx` targets)
- #132421 (Remove `""` case from RISC-V `llvm_abiname` match statement)
- #132422 (llvm: Match new LLVM 128-bit integer alignment on sparc)
r? `@ghost`
`@rustbot` modify labels: rollup
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llvm: Match new LLVM 128-bit integer alignment on sparc
LLVM continues to align more 128-bit integers to 128-bits in the data layout rather than relying on the high level language to do it. Update SPARC target files to match and add a backcompat replacement for current LLVMs.
See llvm/llvm-project#106951 for details
`@rustbot` label: +llvm-main
r? `@durin42`
(Please wait for the LLVM CI to come back before approving), creating this PR to get it tested there.
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Remove `""` case from RISC-V `llvm_abiname` match statement
For RISC-V, `""` isn't the always the same ABI as `"ilp32"`/`"lp64"` (`""` means LLVM will infer the ABI based on the enabled target features), but `create_object_file` currently assumes that it is. Since all RISC-V targets explicitly specify their ABI since #131807, this PR removes `""` from the match arm's pattern (meaning an empty string will now fall through to the `_ => bug!` arm).
r? `@workingjubilee`
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macOS: Document the difference between Clang's `-darwin` and `-macosx` targets
`rustc`'s `*-apple-darwin` targets are badly named (they should've been called `*-apple-macos`), and this causes confusion wrt. the similarly named but somewhat incompatible Clang targets.
So let's document the difference to at least make things a _little_ easier on our users.
``@rustbot`` label O-macos A-docs
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continue `TypingMode` refactor
There are still quite a few places which (indirectly) rely on the `Reveal` of a `ParamEnv`, but we're slowly getting there
r? `@compiler-errors`
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r=jieyouxu,compiler-errors
compiler: Move `rustc_target::spec::abi::Abi` to `rustc_abi::ExternAbi`
Lift `enum Abi` from its rather odd place in the middle of rustc_target, and make it available again from rustc_abi. You know, the crate where you would expect the enum that describes all the ABIs to be? The platform-neutral ones, at least. This will help further refactoring of how we handle ABIs in the near future[^0].
Rename `Abi` to `ExternAbi` because quite a lot of the compiler overloads the concept of "ABI" enough that the existing name is imprecise and it is often renamed _anyway_. Often this was to avoid conflicts with the *other* type formerly known as `Abi` (now named BackendRepr[^1]), but sometimes it is just for clarity, and this name seems more self-explanatory. It does get reexported, though, using its old name, to reduce the odds of merge-conflicting over the entire tree.
All of `ExternAbi`'s friends come along for the ride, which costs adding some optional dependencies to the rustc_abi crate. However, all of this also allows simply moving three crates entirely off rustc_target:
- rustc_hir_pretty
- rustc_lint_defs
- rustc_mir_build
This odd selection is mostly to demonstrate a secondary motivation: The majority of the front-end of the compiler should be as target-agnostic as possible, and it is easier to assure this if they simply don't depend on the crate that describes targets. Note that I didn't migrate crates that don't benefit from it in this way yet, and I didn't survey every last crate.
[^0]: This is being undertaken as part of https://github.com/rust-lang/rust/issues/119183
[^1]: https://github.com/rust-lang/rust/pull/132246
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Improve missing_abi lint
This is for the migration lint for https://github.com/rust-lang/rfcs/pull/3722
It is not yet marked as an edition migration lint, because `Edition2027` doesn't exist yet.
The lint now includes a machine applicable suggestion:
```
warning: extern declarations without an explicit ABI are deprecated
--> src/main.rs:3:1
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3 | extern fn a() {}
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```
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Bump Fuchsia
r? `@Kobzol`
try-job: x86_64-fuchsia
https://fxbug.dev/376114512
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