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Update to LLVM 20
LLVM 20 GA is scheduled for March 11th. Rust 1.87 will be stable on May 15th.
* [x] https://github.com/rust-lang/rust/pull/135764
* [x] https://github.com/rust-lang/rust/pull/136134
* [x] https://github.com/rust-lang/compiler-builtins/pull/752
* [x] https://github.com/llvm/llvm-project/pull/125287
* [x] https://github.com/rust-lang/rust/pull/136537
* [x] https://github.com/rust-lang/rust/pull/136895
* [x] Wait for beta branch (Feb 14).
Tested: host-x86_64, host-aarch64, apple, mingw, msvc
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minor: Sync from downstream
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The medium code model is already the default on the Rust side.
Make sure that linked in C objects (e.g. from glibc) also use
medium code model.
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To avoid including a newline at the end, which broke `only_on_channel` comparison.
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fix: Fix detection of ref patterns for path patterns
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Rollup of 7 pull requests
Successful merges:
- #137095 (Replace some u64 hashes with Hash64)
- #137100 (HIR analysis: Remove unnecessary abstraction over list of clauses)
- #137105 (Restrict DerefPure for Cow<T> impl to T = impl Clone, [impl Clone], str.)
- #137120 (Enable `relative-path-include-bytes-132203` rustdoc-ui test on Windows)
- #137125 (Re-add missing empty lines in the releases notes)
- #137145 (use add-core-stubs / minicore for a few more tests)
- #137149 (Remove SSE ABI from i586-pc-windows-msvc)
r? `@ghost`
`@rustbot` modify labels: rollup
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I was wrong on #19127, I thought hir-def resolver is enough for them, but it turns out not because of paths like `<Enum>::Variant` and `Type::AssocThatIsEnum::Variant`.
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Implement expand_glob_reexport assist
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Linux v6.14-rc3 contains commit 6273a058383e ("x86: rust: set
rustc-abi=x86-softfloat on rustc>=1.86.0"), which resolves the error
from https://github.com/rust-lang/rust/pull/136146.
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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pass struct fields to chalk
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Since https://github.com/rust-lang/rust/pull/130266 loongarch
defaults to medium code model.
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feat: Refactor path lowering and serve a new path diagnostic
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Replace some u64 hashes with Hash64
I introduced the Hash64 and Hash128 types in https://github.com/rust-lang/rust/pull/110083, essentially as a mechanism to prevent hashes from landing in our leb128 encoding paths. If you just have a u64 or u128 field in a struct then derive Encodable/Decodable, that number gets leb128 encoding. So if you need to store a hash or some other value which behaves very close to a hash, don't store it as a u64.
This reverts part of https://github.com/rust-lang/rust/pull/117603, which turned an encoded Hash64 into a u64.
Based on https://github.com/rust-lang/rust/pull/110083, I don't expect this to be perf-sensitive on its own, though I expect that it may help stabilize some of the small rmeta size fluctuations we currently see in perf reports.
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`invalid_from_utf8[_unchecked]`: also lint inherent methods
Addressing https://github.com/rust-lang/rust/issues/131114#issuecomment-2646663535
Also corrected a typo: "_an_ invalid literal", not "_a_ invalid literal".
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bootstrap: add more tracing to compiler/std/llvm flows
- Add more tracing to compiler/std/llvm flows.
- Two drive-by nits:
1. Take `TargetSelection` by-value for `builder.is_builder_target()`. Noticed while adding tracing; follow-up to #136767.
2. Coalesce enzyme build logic into one branch.
- Document `COMPILER{,_FOR}` tracing targets for #96176.
- No functional changes.
### Testing
You can play with the tracing locally with:
```
$ BOOTSTRAP_TRACING=bootstrap=debug ./x build library
$ BOOTSTRAP_TRACING=bootstrap=trace ./x build library
$ BOOTSTRAP_TRACING=bootstrap=trace,COMPILER=trace,COMPILER_FOR=trace ./x build library
```
### Previews
```
$ BOOTSTRAP_TRACING=bootstrap=debug ./x build library
```
```
$ BOOTSTRAP_TRACING=bootstrap=trace,COMPILER=trace,COMPILER_FOR=trace ./x build library
```
r? ``@onur-ozkan`` (or reroll)
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Overhaul `rustc_middle::limits`
In particular, to make `pattern_complexity` work more like other limits, which then enables some other simplifications.
r? ``@Nadrieril``
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Start removing `rustc_middle::hir::map::Map`
`rustc_middle::hir::map::Map` is now just a low-value wrapper around `TyCtxt`. This PR starts removing it.
r? `@cjgillot`
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Also fix the `needs_drop()` intrinsic.
Unions also need this information (to err if they have a drop-needing field), but this will come in a follow-up PR.
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It's a trivial wrapper around the `hir_crate` query with a small number
of uses.
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First of all, note that `Map` has three different relevant meanings.
- The `intravisit::Map` trait.
- The `map::Map` struct.
- The `NestedFilter::Map` associated type.
The `intravisit::Map` trait is impl'd twice.
- For `!`, where the methods are all unreachable.
- For `map::Map`, which gets HIR stuff from the `TyCtxt`.
As part of getting rid of `map::Map`, this commit changes `impl
intravisit::Map for map::Map` to `impl intravisit::Map for TyCtxt`. It's
fairly straightforward except various things are renamed, because the
existing names would no longer have made sense.
- `trait intravisit::Map` becomes `trait intravisit::HirTyCtxt`, so named
because it gets some HIR stuff from a `TyCtxt`.
- `NestedFilter::Map` assoc type becomes `NestedFilter::MaybeTyCtxt`,
because it's always `!` or `TyCtxt`.
- `Visitor::nested_visit_map` becomes `Visitor::maybe_tcx`.
I deliberately made the new trait and associated type names different to
avoid the old `type Map: Map` situation, which I found confusing. We now
have `type MaybeTyCtxt: HirTyCtxt`.
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The end goal is to eliminate `Map` altogether.
I added a `hir_` prefix to all of them, that seemed simplest. The
exceptions are `module_items` which became `hir_module_free_items` because
there was already a `hir_module_items`, and `items` which became
`hir_free_items` for consistency with `hir_module_free_items`.
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There were two mistakes: first, tests were sorted before test modules, and second, we re-sorted based on the name only, which cancelled the sort based on the kind.
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For consistency with `recursion_limit`, `move_size_limit`, and
`type_length_limit`.
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It's similar to the other limits, e.g. obtained via `get_limit`. So it
makes sense to handle it consistently with the other limits. We now use
`Limit`/`usize` in most places instead of `Option<usize>`, so we use
`Limit::new(usize::MAX)`/`usize::MAX` to emulate how `None` used to work.
The commit also adds `Limit::unlimited`.
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Rollup of 8 pull requests
Successful merges:
- #136986 (Apply unsafe_op_in_unsafe_fn to the standard library)
- #137012 (add docs and ut for bootstrap util cc-detect)
- #137072 (Load all builtin targets at once instead of one by one in check-cfg)
- #137102 (Rework `name_regions` to not rely on reverse scc graph for non-member-constrain usages)
- #137112 (Don't project into `NonNull` when dropping a `Box`)
- #137114 (Add an example for `std::error::Error`)
- #137117 (Fix test that relies on error language)
- #137119 (fix broken `x {doc, build} core`)
r? `@ghost`
`@rustbot` modify labels: rollup
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with rust-analyzer
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The .ptx version produced by llc can be specified by passing it with --mattr. Currently it is not possible to specify the .ptx version with -Ctarget-feature because these are not passed through to llvm-bitcode-linker and handled by it. This commit adds both.
--target-feature and -mattr are passed with equals to mitigate issues when the value starts with a - (minus).
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float test
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