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Stop using specialization in rustc_index and rustc_borrowck
For rustc_borrowck the version with specialization isn't much more readable anyway IMO. For rustc_index it probably doesn't affect perf in any noticeable way anyway.
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We already do this for a number of crates, e.g. `rustc_middle`,
`rustc_span`, `rustc_metadata`, `rustc_span`, `rustc_errors`.
For the ones we don't, in many cases the attributes are a mess.
- There is no consistency about order of attribute kinds (e.g.
`allow`/`deny`/`feature`).
- Within attribute kind groups (e.g. the `feature` attributes),
sometimes the order is alphabetical, and sometimes there is no
particular order.
- Sometimes the attributes of a particular kind aren't even grouped
all together, e.g. there might be a `feature`, then an `allow`, then
another `feature`.
This commit extends the existing sorting to all compiler crates,
increasing consistency. If any new attribute line is added there is now
only one place it can go -- no need for arbitrary decisions.
Exceptions:
- `rustc_log`, `rustc_next_trait_solver` and `rustc_type_ir_macros`,
because they have no crate attributes.
- `rustc_codegen_gcc`, because it's quasi-external to rustc (e.g. it's
ignored in `rustfmt.toml`).
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We want to run them on all 64-bit platforms.
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This makes it easier for contributors on aarch64 workstations (e.g. Macs) to
notice when these assertions have been violated.
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That is, change `diagnostic_outside_of_impl` and
`untranslatable_diagnostic` from `allow` to `deny`, because more than
half of the compiler has be converted to use translated diagnostics.
This commit removes more `deny` attributes than it adds `allow`
attributes, which proves that this change is warranted.
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Merge into larger interval set
This reduces the work done while merging rows. In at least one case (#50450), we have thousands of union([range], [20,000 ranges]), which previously inserted each of the 20,000 ranges one by one. Now we only insert one range into the right hand set after copying the set over.
This cuts the runtime of the test case in #50450 from ~26 seconds to ~6 seconds locally, though it doesn't change the memory usage peak (~9.5GB).
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Document `rustc_index::vec::IndexVec`
Document a few of the methods.
Part of https://github.com/rust-lang/rust/issues/93792.
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Co-authored-by: Wesley Wiser <wwiser@gmail.com>
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This reduces the work done while merging rows. In at least one case
(issue 50450), we have thousands of union([range], [20,000 ranges]),
which previously inserted each of the 20,000 ranges one by one. Now we
only insert one range into the right hand set after copying the set
over.
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Two small bitset optimisations
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Similar to the previous commit, this replaces `newtype_index`'s opt-out
`no_ord_impl` attribute with the opt-in `orderable` attribute.
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Only the impl for `u32` is used. These can be reinstated easily if
needed in the future.
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Update bootstrap compiler to 1.73.0 beta
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Co-authored-by: León Orell Valerian Liehr <me@fmease.dev>
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Sometimes people are inspired by rustc to add size assertions to their
code and copy the macro. This is bad because it causes hard build
errors. rustc happens to be special where it makes this okay.
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It lints against features that are inteded to be internal to the
compiler and standard library. Implements MCP #596.
We allow `internal_features` in the standard library and compiler as those
use many features and this _is_ the standard library from the "internal to the compiler and
standard library" after all.
Marking some features as internal wasn't exactly the most scientific approach, I just marked some
mostly obvious features. While there is a categorization in the macro,
it's not very well upheld (should probably be fixed in another PR).
We always pass `-Ainternal_features` in the testsuite
About 400 UI tests and several other tests use internal features.
Instead of throwing the attribute on each one, just always allow them.
There's nothing wrong with testing internal features^^
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Rollup of 5 pull requests
Successful merges:
- #111741 (Use `ObligationCtxt` in custom type ops)
- #111840 (Expose more information in `get_body_with_borrowck_facts`)
- #111876 (Roll compiler_builtins to 0.1.92)
- #111912 (Use `Option::is_some_and` and `Result::is_ok_and` in the compiler )
- #111915 (libtest: Improve error when missing `-Zunstable-options`)
r? `@ghost`
`@rustbot` modify labels: rollup
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Use `FieldIdx` in `FieldsShape`
Finally got to the main motivating example from https://github.com/rust-lang/compiler-team/issues/606 :)
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Finally got to the main motivating example from the MCP :)
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All the same reasons as for `[T]`: more general, less pointer chasing, and `&mut IndexSlice` emphasizes that it doesn't change *length*.
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