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Introduce UnordMap, UnordSet, and UnordBag (see MCP 533)

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MCP 533: https://github.com/rust-lang/compiler-team/issues/533

Also, as an example, substitute UnordMap for FxHashMap in
used_trait_imports query result.
This commit is contained in:
Michael Woerister
2022-10-27 13:23:26 +00:00
parent 43dd3d514b
commit 9117ea9758
10 changed files with 400 additions and 12 deletions
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2
compiler/rustc_middle/src/arena.rs
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@@ -96,7 +96,7 @@ macro_rules! arena_types {
// since we need to allocate this type on both the `rustc_hir` arena
// (during lowering) and the `librustc_middle` arena (for decoding MIR)
[decode] asm_template: rustc_ast::InlineAsmTemplatePiece,
[decode] used_trait_imports: rustc_data_structures::fx::FxHashSet<rustc_hir::def_id::LocalDefId>,
[decode] used_trait_imports: rustc_data_structures::unord::UnordSet<rustc_hir::def_id::LocalDefId>,
[decode] is_late_bound_map: rustc_data_structures::fx::FxIndexSet<rustc_hir::def_id::LocalDefId>,
[decode] impl_source: rustc_middle::traits::ImplSource<'tcx, ()>,