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Move ICH to rustc_query_system
Based on https://github.com/rust-lang/rust/pull/89183
The StableHashingContext does not need to be in rustc_middle.
This PR moves it to rustc_query_system. This will avoid a dependency between rustc_ast_lowering and rustc_middle in https://github.com/rust-lang/rust/pull/89124.
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Stabilize try_reserve
Stabilization PR for the [`try_reserve` feature](https://github.com/rust-lang/rust/issues/48043#issuecomment-898040475).
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Hide allocator details from TryReserveError
I think there's [no need for TryReserveError to carry detailed information](https://github.com/rust-lang/rust/issues/48043#issuecomment-825139280), but I wouldn't want that issue to delay stabilization of the `try_reserve` feature.
So I'm proposing to stabilize `try_reserve` with a `TryReserveError` as an opaque structure, and if needed, expose error details later.
This PR moves the `enum` to an unstable inner `TryReserveErrorKind` that lives under a separate feature flag. `TryReserveErrorKind` could possibly be left as an implementation detail forever, and the `TryReserveError` get methods such as `allocation_size() -> Option<usize>` or `layout() -> Option<Layout>` instead, or the details could be dropped completely to make try-reserve errors just a unit struct, and thus smaller and cheaper.
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Note that this breaks Miri.
Closes #79601
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Implementations in stdlib are now optimized as they were before.
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Bump bootstrap compiler to beta 1.53.0
This PR bumps the bootstrap compiler to version 1.53.0 beta, as part of our usual release process (this was supposed to be Wednesday's step, but creating the beta release took longer than expected).
The PR also includes the "Bootstrap: skip rustdoc fingerprint for building docs" commit, see the reasoning [on Zulip](https://zulip-archive.rust-lang.org/241545trelease/88450153betabootstrap.html).
r? `@Mark-Simulacrum`
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Let's see if this gives us any speedup - some of the TLS state modified in this
commit *is* pretty heavily accessed, so we can hope!
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Stabilize cmp_min_max_by
I would like to propose cmp::{min_by, min_by_key, max_by, max_by_key}
for stabilization.
These are relatively simple and seemingly uncontroversial functions and
have been unchanged in unstable for a while now.
Closes: #64460
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I would like to propose cmp::{min_by, min_by_key, max_by, max_by_key}
for stabilization.
These are relatively simple and seemingly uncontroversial functions and
have been unchanged in unstable for a while now.
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Stabilize or_patterns (RFC 2535, 2530, 2175)
closes #54883
This PR stabilizes the or_patterns feature in Rust 1.53.
This is blocked on the following (in order):
- [x] The crater run in https://github.com/rust-lang/rust/pull/78935#issuecomment-731564021
- [x] The resolution of the unresolved questions and a second crater run (https://github.com/rust-lang/rust/pull/78935#issuecomment-735412705)
- It looks like we will need to pursue some sort of edition-based transition for `:pat`.
- [x] Nomination and discussion by T-lang
- [x] Implement new behavior for `:pat` based on consensus (https://github.com/rust-lang/rust/pull/80100).
- [ ] An FCP on stabilization
EDIT: Stabilization report is in https://github.com/rust-lang/rust/pull/79278#issuecomment-772815177
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In particular, this allows us to write more explicit matches that
avoid the pitfalls of using a fully general fall-through case, yet
remain fairly ergonomic. Less logic is in guard cases, more is in
the actual exhaustive case analysis.
No functional changes.
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use `array_windows` instead of `windows` in the compiler
I do think these changes are beautiful, but do have to admit that using type inference for the window length
can easily be confusing. This seems like a general issue with const generics, where inferring constants adds an additional
complexity which users have to learn and keep in mind.
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