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d46ed5d333
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Nicholas Nethercote d46ed5d333 Clarify some code relating to interning and types. 
I have found this code very confusing at times. This commit clarifies
things.

In particular, the commit explains the requirements that the `Borrow`
impls put on the `Eq` and `Hash` impls, which are non-obvious. And it
puts the `Borrow` impls first, since they force `Eq` and `Hash` to have
particular forms.

The commit also notes `TyS`'s uniqueness requirements.
2022-01-21 14:38:43 +11:00
..
rustc
rustc_apfloat
rustc_arena
rustc_ast Rollup merge of #92357 - GuillaumeGomez:fix-doc-comment-backline-removal, r=camelid 2022-01-10 11:03:05 +01:00
rustc_ast_lowering Auto merge of #92441 - cjgillot:resolve-trait-impl-item, r=matthewjasper 2022-01-15 14:43:45 +00:00
rustc_ast_passes
rustc_ast_pretty Rollup merge of #92487 - dtolnay:traitalias, r=matthewjasper 2022-01-16 16:58:10 +01:00
rustc_attr
rustc_borrowck Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_builtin_macros Update AsmArgs field visibility for rustfmt 2022-01-10 22:38:15 -05:00
rustc_codegen_cranelift initial revert 2022-01-15 01:16:55 +00:00
rustc_codegen_gcc Store a Symbol instead of an Ident in VariantDef/FieldDef 2022-01-11 10:16:22 -05:00
rustc_codegen_llvm initial revert 2022-01-15 01:16:55 +00:00
rustc_codegen_ssa Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_const_eval Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_data_structures Auto merge of #92740 - cuviper:update-rayons, r=Mark-Simulacrum 2022-01-16 08:12:23 +00:00
rustc_driver Rollup merge of #92504 - dtolnay:wall, r=jackh726 2022-01-06 23:15:17 +01:00
rustc_error_codes
rustc_errors Auto merge of #92070 - rukai:replace_vec_into_iter_with_array_into_iter, r=Mark-Simulacrum 2022-01-11 14:23:24 +00:00
rustc_expand Auto merge of #92070 - rukai:replace_vec_into_iter_with_array_into_iter, r=Mark-Simulacrum 2022-01-11 14:23:24 +00:00
rustc_feature rustc_pass_by_value: allow types with no parameters on self 2022-01-11 09:28:13 +00:00
rustc_fs_util
rustc_graphviz eplace usages of vec![].into_iter with [].into_iter 2022-01-09 14:09:25 +11:00
rustc_hir Add inline. 2022-01-15 21:26:25 +01:00
rustc_hir_pretty Rollup merge of #92487 - dtolnay:traitalias, r=matthewjasper 2022-01-16 16:58:10 +01:00
rustc_incremental Reduce use of local_def_id_to_hir_id. 2022-01-15 21:26:25 +01:00
rustc_index remove unused FIXME 2022-01-12 16:09:01 +01:00
rustc_infer Rollup merge of #92710 - jackh726:issue-92280, r=nikomatsakis 2022-01-16 16:58:17 +01:00
rustc_interface Update rayon and rustc-rayon 2022-01-10 11:34:07 -08:00
rustc_lexer
rustc_lint Rollup merge of #92646 - mdibaiee:76935/pass-by-value, r=lcnr 2022-01-16 16:58:15 +01:00
rustc_lint_defs Fix lints documents 2022-01-13 03:57:44 +00:00
rustc_llvm Rollup merge of #92559 - durin42:llvm-14-attributemask, r=nikic 2022-01-06 23:15:18 +01:00
rustc_log Make rustc_log doc test runnable 2022-01-03 22:31:56 -08:00
rustc_macros Rollup merge of #92011 - Aaron1011:decode-span, r=michaelwoerister 2022-01-03 14:44:16 +01:00
rustc_metadata rustc_metadata: Switch all decoder methods from vectors to iterators 2022-01-16 14:14:39 +08:00
rustc_middle Clarify some code relating to interning and types. 2022-01-21 14:38:43 +11:00
rustc_mir_build Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_mir_dataflow Store a Symbol instead of an Ident in VariantDef/FieldDef 2022-01-11 10:16:22 -05:00
rustc_mir_transform Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_monomorphize Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_parse Rollup merge of #92746 - estebank:question-mark-in-type, r=davidtwco 2022-01-16 16:58:18 +01:00
rustc_parse_format
rustc_passes Rollup merge of #92646 - mdibaiee:76935/pass-by-value, r=lcnr 2022-01-16 16:58:15 +01:00
rustc_plugin_impl
rustc_privacy Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_query_impl attempt to re-add ty::Unevaluated visitor and friends 2022-01-15 01:16:55 +00:00
rustc_query_system Auto merge of #92740 - cuviper:update-rayons, r=Mark-Simulacrum 2022-01-16 08:12:23 +00:00
rustc_resolve rustc_metadata: Switch all decoder methods from vectors to iterators 2022-01-16 14:14:39 +08:00
rustc_save_analysis Add trait_item_def_id to AssocItem 2022-01-07 12:28:12 -08:00
rustc_serialize Auto merge of #92604 - nnethercote:optimize-impl_read_unsigned_leb128, r=michaelwoerister 2022-01-15 07:27:30 +00:00
rustc_session sess/cg: re-introduce split dwarf kind 2022-01-06 09:32:42 +00:00
rustc_span Rollup merge of #92646 - mdibaiee:76935/pass-by-value, r=lcnr 2022-01-16 16:58:15 +01:00
rustc_symbol_mangling Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_target Rollup merge of #92581 - Meziu:armv6k-3ds-target, r=nagisa 2022-01-16 16:58:12 +01:00
rustc_trait_selection Rollup merge of #92710 - jackh726:issue-92280, r=nikomatsakis 2022-01-16 16:58:17 +01:00
rustc_traits initial revert 2022-01-15 01:16:55 +00:00
rustc_ty_utils Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00
rustc_type_ir initial revert 2022-01-15 01:16:55 +00:00
rustc_typeck Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr 2022-01-16 11:19:21 +00:00