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rust/compiler/rustc_lint/src
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Nicholas Nethercote 478f8287c0 Introduce ByteSymbol. 
It's like `Symbol` but for byte strings. The interner is now used for
both `Symbol` and `ByteSymbol`. E.g. if you intern `"dog"` and `b"dog"`
you'll get a `Symbol` and a `ByteSymbol` with the same index and the
characters will only be stored once.

The motivation for this is to eliminate the `Arc`s in `ast::LitKind`, to
make `ast::LitKind` impl `Copy`, and to avoid the need to arena-allocate
`ast::LitKind` in HIR. The latter change reduces peak memory by a
non-trivial amount on literal-heavy benchmarks such as `deep-vector` and
`tuple-stress`.

`Encoder`, `Decoder`, `SpanEncoder`, and `SpanDecoder` all get some
changes so that they can handle normal strings and byte strings.

This change does slow down compilation of programs that use
`include_bytes!` on large files, because the contents of those files are
now interned (hashed). This makes `include_bytes!` more similar to
`include_str!`, though `include_bytes!` contents still aren't escaped,
and hashing is still much cheaper than escaping.
2025-06-30 20:42:27 +10:00
..
early Make missing_fragment_specifier an unconditional error 2025-06-12 07:57:12 +00:00
nonstandard_style mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
types Remove rustc_attr_data_structures re-export from rustc_attr_parsing 2025-05-18 18:14:43 +02:00
async_closures.rs Move some Map methods onto TyCtxt. 2025-02-17 13:21:02 +11:00
async_fn_in_trait.rs nightly feature tracking: get rid of the per-feature bool fields 2024-10-23 09:14:41 +01:00
autorefs.rs Make the dangerous_implicit_autorefs lint deny-by-default 2025-05-27 21:14:48 +02:00
builtin.rs Port #[export_name] to the new attribute parsing infrastructure 2025-06-26 08:50:42 +02:00
context.rs Rollup merge of #142645 - Urgau:usage-non_upper_case_globals, r=fmease 2025-06-24 20:46:03 +02:00
dangling.rs Port #[rustc_as_ptr] to the new attribute system 2025-06-16 18:13:27 +03:00
default_could_be_derived.rs Reorder fields in hir::ItemKind variants. 2025-05-30 02:23:20 +10:00
deref_into_dyn_supertrait.rs Use Symbol in LateContext::get_associated_type. 2025-04-14 16:12:21 +10:00
drop_forget_useless.rs Move methods from Map to TyCtxt, part 3. 2025-02-21 14:31:09 +11:00
early.rs early linting: avoid redundant calls to check_id 2025-06-12 19:01:19 +08:00
enum_intrinsics_non_enums.rs Fold visit into ty 2025-03-15 06:34:36 +00:00
errors.rs Move eager translation to a method on Diag 2025-04-16 21:38:59 -04:00
expect.rs Reduce uses of hir_crate. 2025-06-18 15:46:19 +00:00
for_loops_over_fallibles.rs Use span before macro expansion in lint for-loops-over-falibles 2025-05-08 21:17:33 +08:00
foreign_modules.rs Port #[link_name] to the new attribute parsing infrastructure 2025-06-28 13:53:37 +02:00
if_let_rescope.rs Move eager translation to a method on Diag 2025-04-16 21:38:59 -04:00
impl_trait_overcaptures.rs TypeVisiting binders no longer requires TypeFolding its interior 2025-06-13 17:54:45 +00:00
internal.rs Implement lint against direct uses of rustc_type_ir in compiler crates 2025-06-18 16:01:41 +02:00
invalid_from_utf8.rs Introduce ByteSymbol. 2025-06-30 20:42:27 +10:00
late.rs Introduce ByteSymbol. 2025-06-30 20:42:27 +10:00
let_underscore.rs Rustfmt 2025-02-08 22:12:13 +00:00
levels.rs Add runtime check to avoid overwrite arg easily in diag and store and restore snapshot when set subdiag arg 2025-06-25 21:07:16 +08:00
lib.rs compiler: Remove unsupported_fn_ptr_calling_conventions lint 2025-06-23 09:39:59 -07:00
lifetime_syntax.rs Add runtime check to avoid overwrite arg easily in diag and store and restore snapshot when set subdiag arg 2025-06-25 21:07:16 +08:00
lints.rs Rollup merge of #142724 - xizheyin:avoid_overwrite_args, r=oli-obk 2025-06-25 22:14:55 +02:00
macro_expr_fragment_specifier_2024_migration.rs Rename RefTokenTreeCursor. 2024-12-18 10:39:07 +11:00
map_unit_fn.rs Rustfmt 2025-02-08 22:12:13 +00:00
multiple_supertrait_upcastable.rs lint: don't consider sizedness in upcastable lint 2025-06-16 23:04:33 +00:00
non_ascii_idents.rs Make LevelAndSource a struct 2025-04-03 09:17:55 +00:00
non_fmt_panic.rs Use Option<Symbol> in panic_call. 2025-03-25 16:14:27 +11:00
non_local_def.rs Reorder fields in hir::ItemKind variants. 2025-05-30 02:23:20 +10:00
nonstandard_style.rs Rollup merge of #142645 - Urgau:usage-non_upper_case_globals, r=fmease 2025-06-24 20:46:03 +02:00
noop_method_call.rs Rustfmt 2025-02-08 22:12:13 +00:00
opaque_hidden_inferred_bound.rs Squash fold into ty 2025-03-15 06:34:36 +00:00
pass_by_value.rs Rustfmt 2025-02-08 22:12:13 +00:00
passes.rs Introduce ByteSymbol. 2025-06-30 20:42:27 +10:00
precedence.rs Temporarily switch ambiguous_negative_literals lint to allow 2024-07-31 19:36:47 +02:00
ptr_nulls.rs Uplift clippy::invalid_null_ptr_usage as invalid_null_arguments 2025-03-30 19:33:15 +02:00
redundant_semicolon.rs Dont suggest remove semi inside macro expansion for redundant semi lint 2025-06-18 00:36:51 +08:00
reference_casting.rs Expose peel_casts method as an util method inside rustc_lint 2025-03-30 12:14:02 +02:00
shadowed_into_iter.rs Use is_lang_item and as_lang_item instead of handrolling their logic 2025-04-22 11:02:37 +00:00
static_mut_refs.rs Fix error message for static references or mutable references 2025-04-26 14:48:30 +09:00
tests.rs update cfg(bootstrap) 2025-01-08 21:26:39 +01:00
traits.rs Rustfmt 2025-02-08 22:12:13 +00:00
transmute.rs Make UNNECESSARY_TRANSMUTES into a HIR lint 2025-05-25 15:57:48 +00:00
types.rs Introduce ByteSymbol. 2025-06-30 20:42:27 +10:00
unit_bindings.rs Rustfmt 2025-02-08 22:12:13 +00:00
unqualified_local_imports.rs Overhaul UsePath. 2025-06-03 08:23:21 +10:00
unused.rs Fix suggestion spans inside macros for the unused_must_use lint 2025-06-25 23:03:18 +02:00
utils.rs Uplift clippy::invalid_null_ptr_usage as invalid_null_arguments 2025-03-30 19:33:15 +02:00