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Diffstat (limited to 'compiler/rustc_middle/src/arena.rs')
| -rw-r--r-- | compiler/rustc_middle/src/arena.rs | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/arena.rs b/compiler/rustc_middle/src/arena.rs new file mode 100644 index 00000000000..f6570cc95d2 --- /dev/null +++ b/compiler/rustc_middle/src/arena.rs @@ -0,0 +1,110 @@ +/// This declares a list of types which can be allocated by `Arena`. +/// +/// The `few` modifier will cause allocation to use the shared arena and recording the destructor. +/// This is faster and more memory efficient if there's only a few allocations of the type. +/// Leaving `few` out will cause the type to get its own dedicated `TypedArena` which is +/// faster and more memory efficient if there is lots of allocations. +/// +/// Specifying the `decode` modifier will add decode impls for `&T` and `&[T]` where `T` is the type +/// listed. These impls will appear in the implement_ty_decoder! macro. +#[macro_export] +macro_rules! arena_types { + ($macro:path, $args:tt, $tcx:lifetime) => ( + $macro!($args, [ + [] layouts: rustc_target::abi::Layout, + // AdtDef are interned and compared by address + [] adt_def: rustc_middle::ty::AdtDef, + [] steal_mir: rustc_middle::ty::steal::Steal<rustc_middle::mir::Body<$tcx>>, + [decode] mir: rustc_middle::mir::Body<$tcx>, + [] steal_promoted: + rustc_middle::ty::steal::Steal< + rustc_index::vec::IndexVec< + rustc_middle::mir::Promoted, + rustc_middle::mir::Body<$tcx> + > + >, + [decode] promoted: + rustc_index::vec::IndexVec< + rustc_middle::mir::Promoted, + rustc_middle::mir::Body<$tcx> + >, + [decode] typeck_results: rustc_middle::ty::TypeckResults<$tcx>, + [decode] borrowck_result: + rustc_middle::mir::BorrowCheckResult<$tcx>, + [decode] unsafety_check_result: rustc_middle::mir::UnsafetyCheckResult, + [] const_allocs: rustc_middle::mir::interpret::Allocation, + // Required for the incremental on-disk cache + [few] mir_keys: rustc_hir::def_id::DefIdSet, + [] region_scope_tree: rustc_middle::middle::region::ScopeTree, + [] dropck_outlives: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, + rustc_middle::traits::query::DropckOutlivesResult<'tcx> + > + >, + [] normalize_projection_ty: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, + rustc_middle::traits::query::NormalizationResult<'tcx> + > + >, + [] implied_outlives_bounds: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, + Vec<rustc_middle::traits::query::OutlivesBound<'tcx>> + > + >, + [] type_op_subtype: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, ()> + >, + [] type_op_normalize_poly_fn_sig: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::PolyFnSig<'tcx>> + >, + [] type_op_normalize_fn_sig: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::FnSig<'tcx>> + >, + [] type_op_normalize_predicate: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Predicate<'tcx>> + >, + [] type_op_normalize_ty: + rustc_middle::infer::canonical::Canonical<'tcx, + rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Ty<'tcx>> + >, + [few] all_traits: Vec<rustc_hir::def_id::DefId>, + [few] privacy_access_levels: rustc_middle::middle::privacy::AccessLevels, + [few] foreign_module: rustc_middle::middle::cstore::ForeignModule, + [few] foreign_modules: Vec<rustc_middle::middle::cstore::ForeignModule>, + [] upvars_mentioned: rustc_data_structures::fx::FxIndexMap<rustc_hir::HirId, rustc_hir::Upvar>, + [] object_safety_violations: rustc_middle::traits::ObjectSafetyViolation, + [] codegen_unit: rustc_middle::mir::mono::CodegenUnit<$tcx>, + [] attribute: rustc_ast::Attribute, + [] name_set: rustc_data_structures::fx::FxHashSet<rustc_span::symbol::Symbol>, + [] hir_id_set: rustc_hir::HirIdSet, + + // Interned types + [] tys: rustc_middle::ty::TyS<$tcx>, + [] predicates: rustc_middle::ty::PredicateInner<$tcx>, + + // HIR query types + [few] indexed_hir: rustc_middle::hir::map::IndexedHir<$tcx>, + [few] hir_definitions: rustc_hir::definitions::Definitions, + [] hir_owner: rustc_middle::hir::Owner<$tcx>, + [] hir_owner_nodes: rustc_middle::hir::OwnerNodes<$tcx>, + + // Note that this deliberately duplicates items in the `rustc_hir::arena`, + // 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, + + // This is used to decode the &'tcx [Span] for InlineAsm's line_spans. + [decode] span: rustc_span::Span, + [decode] used_trait_imports: rustc_data_structures::fx::FxHashSet<rustc_hir::def_id::LocalDefId>, + ], $tcx); + ) +} + +arena_types!(rustc_arena::declare_arena, [], 'tcx); |