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d914f17ca7
Remove `DropArena`. Most arena-allocate types that impl `Drop` get their own `TypedArena`, but a few infrequently used ones share a `DropArena`. This sharing adds complexity but doesn't help performance or memory usage. Perhaps it was more effective in the past prior to some other improvements to arenas. This commit removes `DropArena` and the sharing of arenas via the `few` attribute of the `arena_types` macro. This change removes over 100 lines of code and nine uses of `unsafe` (one of which affects the parallel compiler) and makes the remaining code easier to read. |
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|---|---|---|
| .. | ||
| arena.rs | ||
| def_path_hash_map.rs | ||
| def.rs | ||
| definitions.rs | ||
| diagnostic_items.rs | ||
| hir_id.rs | ||
| hir.rs | ||
| intravisit.rs | ||
| itemlikevisit.rs | ||
| lang_items.rs | ||
| lib.rs | ||
| pat_util.rs | ||
| stable_hash_impls.rs | ||
| target.rs | ||
| tests.rs | ||
| weak_lang_items.rs | ||