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Diffstat (limited to 'src/librustc/query/mod.rs')
| -rw-r--r-- | src/librustc/query/mod.rs | 1261 |
1 files changed, 0 insertions, 1261 deletions
diff --git a/src/librustc/query/mod.rs b/src/librustc/query/mod.rs deleted file mode 100644 index 3a6961660fd..00000000000 --- a/src/librustc/query/mod.rs +++ /dev/null @@ -1,1261 +0,0 @@ -use crate::dep_graph::{DepKind, DepNode, RecoverKey, SerializedDepNodeIndex}; -use crate::mir; -use crate::mir::interpret::{GlobalId, LitToConstInput}; -use crate::traits; -use crate::traits::query::{ - CanonicalPredicateGoal, CanonicalProjectionGoal, CanonicalTyGoal, - CanonicalTypeOpAscribeUserTypeGoal, CanonicalTypeOpEqGoal, CanonicalTypeOpNormalizeGoal, - CanonicalTypeOpProvePredicateGoal, CanonicalTypeOpSubtypeGoal, -}; -use crate::ty::query::queries; -use crate::ty::query::QueryDescription; -use crate::ty::subst::SubstsRef; -use crate::ty::{self, ParamEnvAnd, Ty, TyCtxt}; -use rustc_hir::def_id::{CrateNum, DefId, DefIndex}; - -use rustc_span::symbol::Symbol; -use std::borrow::Cow; - -fn describe_as_module(def_id: DefId, tcx: TyCtxt<'_>) -> String { - if def_id.is_top_level_module() { - format!("top-level module") - } else { - format!("module `{}`", tcx.def_path_str(def_id)) - } -} - -// Each of these queries corresponds to a function pointer field in the -// `Providers` struct for requesting a value of that type, and a method -// on `tcx: TyCtxt` (and `tcx.at(span)`) for doing that request in a way -// which memoizes and does dep-graph tracking, wrapping around the actual -// `Providers` that the driver creates (using several `rustc_*` crates). -// -// The result type of each query must implement `Clone`, and additionally -// `ty::query::values::Value`, which produces an appropriate placeholder -// (error) value if the query resulted in a query cycle. -// Queries marked with `fatal_cycle` do not need the latter implementation, -// as they will raise an fatal error on query cycles instead. -rustc_queries! { - Other { - query trigger_delay_span_bug(key: DefId) -> () { - desc { "trigger a delay span bug" } - } - } - - Other { - // Represents crate as a whole (as distinct from the top-level crate module). - // If you call `hir_crate` (e.g., indirectly by calling `tcx.hir().krate()`), - // we will have to assume that any change means that you need to be recompiled. - // This is because the `hir_crate` query gives you access to all other items. - // To avoid this fate, do not call `tcx.hir().krate()`; instead, - // prefer wrappers like `tcx.visit_all_items_in_krate()`. - query hir_crate(key: CrateNum) -> &'tcx Crate<'tcx> { - eval_always - no_hash - desc { "get the crate HIR" } - } - - /// Records the type of every item. - query type_of(key: DefId) -> Ty<'tcx> { - cache_on_disk_if { key.is_local() } - } - - /// Maps from the `DefId` of an item (trait/struct/enum/fn) to its - /// associated generics. - query generics_of(key: DefId) -> &'tcx ty::Generics { - cache_on_disk_if { key.is_local() } - load_cached(tcx, id) { - let generics: Option<ty::Generics> = tcx.queries.on_disk_cache - .try_load_query_result(tcx, id); - generics.map(|x| &*tcx.arena.alloc(x)) - } - } - - /// Maps from the `DefId` of an item (trait/struct/enum/fn) to the - /// predicates (where-clauses) that must be proven true in order - /// to reference it. This is almost always the "predicates query" - /// that you want. - /// - /// `predicates_of` builds on `predicates_defined_on` -- in fact, - /// it is almost always the same as that query, except for the - /// case of traits. For traits, `predicates_of` contains - /// an additional `Self: Trait<...>` predicate that users don't - /// actually write. This reflects the fact that to invoke the - /// trait (e.g., via `Default::default`) you must supply types - /// that actually implement the trait. (However, this extra - /// predicate gets in the way of some checks, which are intended - /// to operate over only the actual where-clauses written by the - /// user.) - query predicates_of(key: DefId) -> ty::GenericPredicates<'tcx> { - cache_on_disk_if { key.is_local() } - } - - query native_libraries(_: CrateNum) -> Lrc<Vec<NativeLibrary>> { - desc { "looking up the native libraries of a linked crate" } - } - - query lint_levels(_: CrateNum) -> &'tcx LintLevelMap { - eval_always - desc { "computing the lint levels for items in this crate" } - } - } - - Codegen { - query is_panic_runtime(_: CrateNum) -> bool { - fatal_cycle - desc { "checking if the crate is_panic_runtime" } - } - } - - Codegen { - /// Set of all the `DefId`s in this crate that have MIR associated with - /// them. This includes all the body owners, but also things like struct - /// constructors. - query mir_keys(_: CrateNum) -> &'tcx DefIdSet { - desc { "getting a list of all mir_keys" } - } - - /// Maps DefId's that have an associated `mir::Body` to the result - /// of the MIR const-checking pass. This is the set of qualifs in - /// the final value of a `const`. - query mir_const_qualif(key: DefId) -> mir::ConstQualifs { - desc { |tcx| "const checking `{}`", tcx.def_path_str(key) } - cache_on_disk_if { key.is_local() } - } - - /// Fetch the MIR for a given `DefId` right after it's built - this includes - /// unreachable code. - query mir_built(_: DefId) -> &'tcx Steal<mir::BodyAndCache<'tcx>> { - desc { "building MIR for" } - } - - /// Fetch the MIR for a given `DefId` up till the point where it is - /// ready for const evaluation. - /// - /// See the README for the `mir` module for details. - query mir_const(_: DefId) -> &'tcx Steal<mir::BodyAndCache<'tcx>> { - no_hash - } - - query mir_validated(_: DefId) -> - ( - &'tcx Steal<mir::BodyAndCache<'tcx>>, - &'tcx Steal<IndexVec<mir::Promoted, mir::BodyAndCache<'tcx>>> - ) { - no_hash - } - - /// MIR after our optimization passes have run. This is MIR that is ready - /// for codegen. This is also the only query that can fetch non-local MIR, at present. - query optimized_mir(key: DefId) -> &'tcx mir::BodyAndCache<'tcx> { - cache_on_disk_if { key.is_local() } - load_cached(tcx, id) { - let mir: Option<crate::mir::BodyAndCache<'tcx>> - = tcx.queries.on_disk_cache.try_load_query_result(tcx, id); - mir.map(|x| { - let cache = tcx.arena.alloc(x); - cache.ensure_predecessors(); - &*cache - }) - } - } - - query promoted_mir(key: DefId) -> &'tcx IndexVec<mir::Promoted, mir::BodyAndCache<'tcx>> { - cache_on_disk_if { key.is_local() } - load_cached(tcx, id) { - let promoted: Option< - rustc_index::vec::IndexVec< - crate::mir::Promoted, - crate::mir::BodyAndCache<'tcx> - >> = tcx.queries.on_disk_cache.try_load_query_result(tcx, id); - promoted.map(|p| { - let cache = tcx.arena.alloc(p); - for body in cache.iter_mut() { - body.ensure_predecessors(); - } - &*cache - }) - } - } - } - - TypeChecking { - // Erases regions from `ty` to yield a new type. - // Normally you would just use `tcx.erase_regions(&value)`, - // however, which uses this query as a kind of cache. - query erase_regions_ty(ty: Ty<'tcx>) -> Ty<'tcx> { - // This query is not expected to have input -- as a result, it - // is not a good candidates for "replay" because it is essentially a - // pure function of its input (and hence the expectation is that - // no caller would be green **apart** from just these - // queries). Making it anonymous avoids hashing the result, which - // may save a bit of time. - anon - no_force - desc { "erasing regions from `{:?}`", ty } - } - - query program_clauses_for(_: DefId) -> Clauses<'tcx> { - desc { "generating chalk-style clauses" } - } - - query program_clauses_for_env(_: traits::Environment<'tcx>) -> Clauses<'tcx> { - no_force - desc { "generating chalk-style clauses for environment" } - } - - // Get the chalk-style environment of the given item. - query environment(_: DefId) -> traits::Environment<'tcx> { - desc { "return a chalk-style environment" } - } - } - - Linking { - query wasm_import_module_map(_: CrateNum) -> &'tcx FxHashMap<DefId, String> { - desc { "wasm import module map" } - } - } - - Other { - /// Maps from the `DefId` of an item (trait/struct/enum/fn) to the - /// predicates (where-clauses) directly defined on it. This is - /// equal to the `explicit_predicates_of` predicates plus the - /// `inferred_outlives_of` predicates. - query predicates_defined_on(_: DefId) -> ty::GenericPredicates<'tcx> {} - - /// Returns the predicates written explicitly by the user. - query explicit_predicates_of(_: DefId) -> ty::GenericPredicates<'tcx> {} - - /// Returns the inferred outlives predicates (e.g., for `struct - /// Foo<'a, T> { x: &'a T }`, this would return `T: 'a`). - query inferred_outlives_of(_: DefId) -> &'tcx [(ty::Predicate<'tcx>, Span)] {} - - /// Maps from the `DefId` of a trait to the list of - /// super-predicates. This is a subset of the full list of - /// predicates. We store these in a separate map because we must - /// evaluate them even during type conversion, often before the - /// full predicates are available (note that supertraits have - /// additional acyclicity requirements). - query super_predicates_of(key: DefId) -> ty::GenericPredicates<'tcx> { - desc { |tcx| "computing the supertraits of `{}`", tcx.def_path_str(key) } - } - - /// To avoid cycles within the predicates of a single item we compute - /// per-type-parameter predicates for resolving `T::AssocTy`. - query type_param_predicates(key: (DefId, DefId)) -> ty::GenericPredicates<'tcx> { - no_force - desc { |tcx| "computing the bounds for type parameter `{}`", { - let id = tcx.hir().as_local_hir_id(key.1).unwrap(); - tcx.hir().ty_param_name(id) - }} - } - - query trait_def(_: DefId) -> &'tcx ty::TraitDef {} - query adt_def(_: DefId) -> &'tcx ty::AdtDef {} - query adt_destructor(_: DefId) -> Option<ty::Destructor> {} - - // The cycle error here should be reported as an error by `check_representable`. - // We consider the type as Sized in the meanwhile to avoid - // further errors (done in impl Value for AdtSizedConstraint). - // Use `cycle_delay_bug` to delay the cycle error here to be emitted later - // in case we accidentally otherwise don't emit an error. - query adt_sized_constraint( - _: DefId - ) -> AdtSizedConstraint<'tcx> { - cycle_delay_bug - } - - query adt_dtorck_constraint( - _: DefId - ) -> Result<DtorckConstraint<'tcx>, NoSolution> {} - - /// Returns `true` if this is a const fn, use the `is_const_fn` to know whether your crate - /// actually sees it as const fn (e.g., the const-fn-ness might be unstable and you might - /// not have the feature gate active). - /// - /// **Do not call this function manually.** It is only meant to cache the base data for the - /// `is_const_fn` function. - query is_const_fn_raw(key: DefId) -> bool { - desc { |tcx| "checking if item is const fn: `{}`", tcx.def_path_str(key) } - } - - /// Returns `true` if this is a const `impl`. **Do not call this function manually.** - /// - /// This query caches the base data for the `is_const_impl` helper function, which also - /// takes into account stability attributes (e.g., `#[rustc_const_unstable]`). - query is_const_impl_raw(key: DefId) -> bool { - desc { |tcx| "checking if item is const impl: `{}`", tcx.def_path_str(key) } - } - - query asyncness(key: DefId) -> hir::IsAsync { - desc { |tcx| "checking if the function is async: `{}`", tcx.def_path_str(key) } - } - - /// Returns `true` if calls to the function may be promoted. - /// - /// This is either because the function is e.g., a tuple-struct or tuple-variant - /// constructor, or because it has the `#[rustc_promotable]` attribute. The attribute should - /// be removed in the future in favour of some form of check which figures out whether the - /// function does not inspect the bits of any of its arguments (so is essentially just a - /// constructor function). - query is_promotable_const_fn(_: DefId) -> bool {} - - query const_fn_is_allowed_fn_ptr(_: DefId) -> bool {} - - /// Returns `true` if this is a foreign item (i.e., linked via `extern { ... }`). - query is_foreign_item(_: DefId) -> bool {} - - /// Returns `Some(mutability)` if the node pointed to by `def_id` is a static item. - query static_mutability(_: DefId) -> Option<hir::Mutability> {} - - /// Returns `Some(generator_kind)` if the node pointed to by `def_id` is a generator. - query generator_kind(_: DefId) -> Option<hir::GeneratorKind> {} - - /// Gets a map with the variance of every item; use `item_variance` instead. - query crate_variances(_: CrateNum) -> &'tcx ty::CrateVariancesMap<'tcx> { - desc { "computing the variances for items in this crate" } - } - - /// Maps from the `DefId` of a type or region parameter to its (inferred) variance. - query variances_of(_: DefId) -> &'tcx [ty::Variance] {} - } - - TypeChecking { - /// Maps from thee `DefId` of a type to its (inferred) outlives. - query inferred_outlives_crate(_: CrateNum) - -> &'tcx ty::CratePredicatesMap<'tcx> { - desc { "computing the inferred outlives predicates for items in this crate" } - } - } - - Other { - /// Maps from an impl/trait `DefId to a list of the `DefId`s of its items. - query associated_item_def_ids(_: DefId) -> &'tcx [DefId] {} - - /// Maps from a trait item to the trait item "descriptor". - query associated_item(_: DefId) -> ty::AssocItem {} - - /// Collects the associated items defined on a trait or impl. - query associated_items(key: DefId) -> &'tcx ty::AssociatedItems { - desc { |tcx| "collecting associated items of {}", tcx.def_path_str(key) } - } - - query impl_trait_ref(_: DefId) -> Option<ty::TraitRef<'tcx>> {} - query impl_polarity(_: DefId) -> ty::ImplPolarity {} - - query issue33140_self_ty(_: DefId) -> Option<ty::Ty<'tcx>> {} - } - - TypeChecking { - /// Maps a `DefId` of a type to a list of its inherent impls. - /// Contains implementations of methods that are inherent to a type. - /// Methods in these implementations don't need to be exported. - query inherent_impls(_: DefId) -> &'tcx [DefId] { - eval_always - } - } - - TypeChecking { - /// The result of unsafety-checking this `DefId`. - query unsafety_check_result(key: DefId) -> mir::UnsafetyCheckResult { - desc { |tcx| "unsafety-checking `{}`", tcx.def_path_str(key) } - cache_on_disk_if { key.is_local() } - } - - /// HACK: when evaluated, this reports a "unsafe derive on repr(packed)" error - query unsafe_derive_on_repr_packed(_: DefId) -> () {} - - /// The signature of functions and closures. - query fn_sig(_: DefId) -> ty::PolyFnSig<'tcx> {} - } - - Other { - query lint_mod(key: DefId) -> () { - desc { |tcx| "linting {}", describe_as_module(key, tcx) } - } - - /// Checks the attributes in the module. - query check_mod_attrs(key: DefId) -> () { - desc { |tcx| "checking attributes in {}", describe_as_module(key, tcx) } - } - - query check_mod_unstable_api_usage(key: DefId) -> () { - desc { |tcx| "checking for unstable API usage in {}", describe_as_module(key, tcx) } - } - - /// Checks the const bodies in the module for illegal operations (e.g. `if` or `loop`). - query check_mod_const_bodies(key: DefId) -> () { - desc { |tcx| "checking consts in {}", describe_as_module(key, tcx) } - } - - /// Checks the loops in the module. - query check_mod_loops(key: DefId) -> () { - desc { |tcx| "checking loops in {}", describe_as_module(key, tcx) } - } - - query check_mod_item_types(key: DefId) -> () { - desc { |tcx| "checking item types in {}", describe_as_module(key, tcx) } - } - - query check_mod_privacy(key: DefId) -> () { - desc { |tcx| "checking privacy in {}", describe_as_module(key, tcx) } - } - - query check_mod_intrinsics(key: DefId) -> () { - desc { |tcx| "checking intrinsics in {}", describe_as_module(key, tcx) } - } - - query check_mod_liveness(key: DefId) -> () { - desc { |tcx| "checking liveness of variables in {}", describe_as_module(key, tcx) } - } - - query check_mod_impl_wf(key: DefId) -> () { - desc { |tcx| "checking that impls are well-formed in {}", describe_as_module(key, tcx) } - } - - query collect_mod_item_types(key: DefId) -> () { - desc { |tcx| "collecting item types in {}", describe_as_module(key, tcx) } - } - - /// Caches `CoerceUnsized` kinds for impls on custom types. - query coerce_unsized_info(_: DefId) - -> ty::adjustment::CoerceUnsizedInfo {} - } - - TypeChecking { - query typeck_item_bodies(_: CrateNum) -> () { - desc { "type-checking all item bodies" } - } - - query typeck_tables_of(key: DefId) -> &'tcx ty::TypeckTables<'tcx> { - desc { |tcx| "type-checking `{}`", tcx.def_path_str(key) } - cache_on_disk_if { key.is_local() } - } - query diagnostic_only_typeck_tables_of(key: DefId) -> &'tcx ty::TypeckTables<'tcx> { - cache_on_disk_if { key.is_local() } - load_cached(tcx, id) { - let typeck_tables: Option<ty::TypeckTables<'tcx>> = tcx - .queries.on_disk_cache - .try_load_query_result(tcx, id); - - typeck_tables.map(|tables| &*tcx.arena.alloc(tables)) - } - } - } - - Other { - query used_trait_imports(key: DefId) -> &'tcx DefIdSet { - cache_on_disk_if { key.is_local() } - } - } - - TypeChecking { - query has_typeck_tables(_: DefId) -> bool {} - - query coherent_trait(def_id: DefId) -> () { - desc { |tcx| "coherence checking all impls of trait `{}`", tcx.def_path_str(def_id) } - } - } - - BorrowChecking { - /// Borrow-checks the function body. If this is a closure, returns - /// additional requirements that the closure's creator must verify. - query mir_borrowck(key: DefId) -> &'tcx mir::BorrowCheckResult<'tcx> { - desc { |tcx| "borrow-checking `{}`", tcx.def_path_str(key) } - cache_on_disk_if(tcx, opt_result) { - key.is_local() - && (tcx.is_closure(key) - || opt_result.map_or(false, |r| !r.concrete_opaque_types.is_empty())) - } - } - } - - TypeChecking { - /// Gets a complete map from all types to their inherent impls. - /// Not meant to be used directly outside of coherence. - /// (Defined only for `LOCAL_CRATE`.) - query crate_inherent_impls(k: CrateNum) - -> &'tcx CrateInherentImpls { - eval_always - desc { "all inherent impls defined in crate `{:?}`", k } - } - - /// Checks all types in the crate for overlap in their inherent impls. Reports errors. - /// Not meant to be used directly outside of coherence. - /// (Defined only for `LOCAL_CRATE`.) - query crate_inherent_impls_overlap_check(_: CrateNum) - -> () { - eval_always - desc { "check for overlap between inherent impls defined in this crate" } - } - } - - Other { - /// Evaluates a constant without running sanity checks. - /// - /// **Do not use this** outside const eval. Const eval uses this to break query cycles - /// during validation. Please add a comment to every use site explaining why using - /// `const_eval_validated` isn't sufficient. The returned constant also isn't in a suitable - /// form to be used outside of const eval. - query const_eval_raw(key: ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>) - -> ConstEvalRawResult<'tcx> { - no_force - desc { |tcx| - "const-evaluating `{}`", - tcx.def_path_str(key.value.instance.def.def_id()) - } - } - - /// Results of evaluating const items or constants embedded in - /// other items (such as enum variant explicit discriminants). - /// - /// In contrast to `const_eval_raw` this performs some validation on the constant, and - /// returns a proper constant that is usable by the rest of the compiler. - /// - /// **Do not use this** directly, use one of the following wrappers: `tcx.const_eval_poly`, - /// `tcx.const_eval_resolve`, `tcx.const_eval_instance`, or `tcx.const_eval_promoted`. - query const_eval_validated(key: ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>) - -> ConstEvalResult<'tcx> { - no_force - desc { |tcx| - "const-evaluating + checking `{}`", - tcx.def_path_str(key.value.instance.def.def_id()) - } - cache_on_disk_if(_, opt_result) { - // Only store results without errors - opt_result.map_or(true, |r| r.is_ok()) - } - } - - /// Extracts a field of a (variant of a) const. - query const_field( - key: ty::ParamEnvAnd<'tcx, (&'tcx ty::Const<'tcx>, mir::Field)> - ) -> ConstValue<'tcx> { - no_force - desc { "extract field of const" } - } - - /// Destructure a constant ADT or array into its variant indent and its - /// field values. - query destructure_const( - key: ty::ParamEnvAnd<'tcx, &'tcx ty::Const<'tcx>> - ) -> mir::DestructuredConst<'tcx> { - no_force - desc { "destructure constant" } - } - - query const_caller_location(key: (rustc_span::Symbol, u32, u32)) -> ConstValue<'tcx> { - no_force - desc { "get a &core::panic::Location referring to a span" } - } - - query lit_to_const( - key: LitToConstInput<'tcx> - ) -> Result<&'tcx ty::Const<'tcx>, LitToConstError> { - no_force - desc { "converting literal to const" } - } - } - - TypeChecking { - query check_match(key: DefId) { - cache_on_disk_if { key.is_local() } - } - - /// Performs part of the privacy check and computes "access levels". - query privacy_access_levels(_: CrateNum) -> &'tcx AccessLevels { - eval_always - desc { "privacy access levels" } - } - query check_private_in_public(_: CrateNum) -> () { - eval_always - desc { "checking for private elements in public interfaces" } - } - } - - Other { - query reachable_set(_: CrateNum) -> Lrc<HirIdSet> { - desc { "reachability" } - } - - /// Per-body `region::ScopeTree`. The `DefId` should be the owner `DefId` for the body; - /// in the case of closures, this will be redirected to the enclosing function. - query region_scope_tree(_: DefId) -> &'tcx region::ScopeTree {} - - query mir_shims(key: ty::InstanceDef<'tcx>) -> &'tcx mir::BodyAndCache<'tcx> { - no_force - desc { |tcx| "generating MIR shim for `{}`", tcx.def_path_str(key.def_id()) } - } - - /// The `symbol_name` query provides the symbol name for calling a - /// given instance from the local crate. In particular, it will also - /// look up the correct symbol name of instances from upstream crates. - query symbol_name(key: ty::Instance<'tcx>) -> ty::SymbolName { - no_force - desc { "computing the symbol for `{}`", key } - cache_on_disk_if { true } - } - - query def_kind(_: DefId) -> Option<DefKind> {} - query def_span(_: DefId) -> Span { - // FIXME(mw): DefSpans are not really inputs since they are derived from - // HIR. But at the moment HIR hashing still contains some hacks that allow - // to make type debuginfo to be source location independent. Declaring - // DefSpan an input makes sure that changes to these are always detected - // regardless of HIR hashing. - eval_always - } - query lookup_stability(_: DefId) -> Option<&'tcx attr::Stability> {} - query lookup_const_stability(_: DefId) -> Option<&'tcx attr::ConstStability> {} - query lookup_deprecation_entry(_: DefId) -> Option<DeprecationEntry> {} - query item_attrs(_: DefId) -> Lrc<[ast::Attribute]> {} - } - - Codegen { - query codegen_fn_attrs(_: DefId) -> CodegenFnAttrs { - cache_on_disk_if { true } - } - } - - Other { - query fn_arg_names(_: DefId) -> Vec<ast::Name> {} - /// Gets the rendered value of the specified constant or associated constant. - /// Used by rustdoc. - query rendered_const(_: DefId) -> String {} - query impl_parent(_: DefId) -> Option<DefId> {} - } - - TypeChecking { - query trait_of_item(_: DefId) -> Option<DefId> {} - } - - Codegen { - query is_mir_available(key: DefId) -> bool { - desc { |tcx| "checking if item has mir available: `{}`", tcx.def_path_str(key) } - } - } - - Other { - query vtable_methods(key: ty::PolyTraitRef<'tcx>) - -> &'tcx [Option<(DefId, SubstsRef<'tcx>)>] { - no_force - desc { |tcx| "finding all methods for trait {}", tcx.def_path_str(key.def_id()) } - } - } - - Codegen { - query codegen_fulfill_obligation( - key: (ty::ParamEnv<'tcx>, ty::PolyTraitRef<'tcx>) - ) -> Vtable<'tcx, ()> { - no_force - cache_on_disk_if { true } - desc { |tcx| - "checking if `{}` fulfills its obligations", - tcx.def_path_str(key.1.def_id()) - } - } - } - - TypeChecking { - query trait_impls_of(key: DefId) -> &'tcx ty::trait_def::TraitImpls { - desc { |tcx| "trait impls of `{}`", tcx.def_path_str(key) } - } - query specialization_graph_of(key: DefId) -> &'tcx specialization_graph::Graph { - desc { |tcx| "building specialization graph of trait `{}`", tcx.def_path_str(key) } - cache_on_disk_if { true } - } - query object_safety_violations(key: DefId) -> Vec<traits::ObjectSafetyViolation> { - desc { |tcx| "determine object safety of trait `{}`", tcx.def_path_str(key) } - } - - /// Gets the ParameterEnvironment for a given item; this environment - /// will be in "user-facing" mode, meaning that it is suitabe for - /// type-checking etc, and it does not normalize specializable - /// associated types. This is almost always what you want, - /// unless you are doing MIR optimizations, in which case you - /// might want to use `reveal_all()` method to change modes. - query param_env(_: DefId) -> ty::ParamEnv<'tcx> {} - - /// Trait selection queries. These are best used by invoking `ty.is_copy_modulo_regions()`, - /// `ty.is_copy()`, etc, since that will prune the environment where possible. - query is_copy_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool { - no_force - desc { "computing whether `{}` is `Copy`", env.value } - } - /// Query backing `TyS::is_sized`. - query is_sized_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool { - no_force - desc { "computing whether `{}` is `Sized`", env.value } - } - /// Query backing `TyS::is_freeze`. - query is_freeze_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool { - no_force - desc { "computing whether `{}` is freeze", env.value } - } - /// Query backing `TyS::needs_drop`. - query needs_drop_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool { - no_force - desc { "computing whether `{}` needs drop", env.value } - } - - /// A list of types where the ADT requires drop if and only if any of - /// those types require drop. If the ADT is known to always need drop - /// then `Err(AlwaysRequiresDrop)` is returned. - query adt_drop_tys(_: DefId) -> Result<&'tcx ty::List<Ty<'tcx>>, AlwaysRequiresDrop> { - cache_on_disk_if { true } - } - - query layout_raw( - env: ty::ParamEnvAnd<'tcx, Ty<'tcx>> - ) -> Result<&'tcx ty::layout::LayoutDetails, ty::layout::LayoutError<'tcx>> { - no_force - desc { "computing layout of `{}`", env.value } - } - } - - Other { - query dylib_dependency_formats(_: CrateNum) - -> &'tcx [(CrateNum, LinkagePreference)] { - desc { "dylib dependency formats of crate" } - } - - query dependency_formats(_: CrateNum) - -> Lrc<crate::middle::dependency_format::Dependencies> - { - desc { "get the linkage format of all dependencies" } - } - } - - Codegen { - query is_compiler_builtins(_: CrateNum) -> bool { - fatal_cycle - desc { "checking if the crate is_compiler_builtins" } - } - query has_global_allocator(_: CrateNum) -> bool { - fatal_cycle - desc { "checking if the crate has_global_allocator" } - } - query has_panic_handler(_: CrateNum) -> bool { - fatal_cycle - desc { "checking if the crate has_panic_handler" } - } - query is_profiler_runtime(_: CrateNum) -> bool { - fatal_cycle - desc { "query a crate is `#![profiler_runtime]`" } - } - query panic_strategy(_: CrateNum) -> PanicStrategy { - fatal_cycle - desc { "query a crate's configured panic strategy" } - } - query is_no_builtins(_: CrateNum) -> bool { - fatal_cycle - desc { "test whether a crate has `#![no_builtins]`" } - } - query symbol_mangling_version(_: CrateNum) -> SymbolManglingVersion { - fatal_cycle - desc { "query a crate's symbol mangling version" } - } - - query extern_crate(_: DefId) -> Option<&'tcx ExternCrate> { - eval_always - desc { "getting crate's ExternCrateData" } - } - } - - TypeChecking { - query specializes(_: (DefId, DefId)) -> bool { - no_force - desc { "computing whether impls specialize one another" } - } - query in_scope_traits_map(_: DefIndex) - -> Option<&'tcx FxHashMap<ItemLocalId, StableVec<TraitCandidate>>> { - eval_always - desc { "traits in scope at a block" } - } - } - - Other { - query module_exports(_: DefId) -> Option<&'tcx [Export<hir::HirId>]> { - eval_always - } - } - - TypeChecking { - query impl_defaultness(_: DefId) -> hir::Defaultness {} - - query check_item_well_formed(_: DefId) -> () {} - query check_trait_item_well_formed(_: DefId) -> () {} - query check_impl_item_well_formed(_: DefId) -> () {} - } - - Linking { - // The `DefId`s of all non-generic functions and statics in the given crate - // that can be reached from outside the crate. - // - // We expect this items to be available for being linked to. - // - // This query can also be called for `LOCAL_CRATE`. In this case it will - // compute which items will be reachable to other crates, taking into account - // the kind of crate that is currently compiled. Crates with only a - // C interface have fewer reachable things. - // - // Does not include external symbols that don't have a corresponding DefId, - // like the compiler-generated `main` function and so on. - query reachable_non_generics(_: CrateNum) - -> &'tcx DefIdMap<SymbolExportLevel> { - desc { "looking up the exported symbols of a crate" } - } - query is_reachable_non_generic(_: DefId) -> bool {} - query is_unreachable_local_definition(_: DefId) -> bool {} - } - - Codegen { - /// The entire set of monomorphizations the local crate can safely link - /// to because they are exported from upstream crates. Do not depend on - /// this directly, as its value changes anytime a monomorphization gets - /// added or removed in any upstream crate. Instead use the narrower - /// `upstream_monomorphizations_for`, `upstream_drop_glue_for`, or, even - /// better, `Instance::upstream_monomorphization()`. - query upstream_monomorphizations( - k: CrateNum - ) -> &'tcx DefIdMap<FxHashMap<SubstsRef<'tcx>, CrateNum>> { - desc { "collecting available upstream monomorphizations `{:?}`", k } - } - - /// Returns the set of upstream monomorphizations available for the - /// generic function identified by the given `def_id`. The query makes - /// sure to make a stable selection if the same monomorphization is - /// available in multiple upstream crates. - /// - /// You likely want to call `Instance::upstream_monomorphization()` - /// instead of invoking this query directly. - query upstream_monomorphizations_for(_: DefId) - -> Option<&'tcx FxHashMap<SubstsRef<'tcx>, CrateNum>> {} - - /// Returns the upstream crate that exports drop-glue for the given - /// type (`substs` is expected to be a single-item list containing the - /// type one wants drop-glue for). - /// - /// This is a subset of `upstream_monomorphizations_for` in order to - /// increase dep-tracking granularity. Otherwise adding or removing any - /// type with drop-glue in any upstream crate would invalidate all - /// functions calling drop-glue of an upstream type. - /// - /// You likely want to call `Instance::upstream_monomorphization()` - /// instead of invoking this query directly. - /// - /// NOTE: This query could easily be extended to also support other - /// common functions that have are large set of monomorphizations - /// (like `Clone::clone` for example). - query upstream_drop_glue_for(substs: SubstsRef<'tcx>) -> Option<CrateNum> { - desc { "available upstream drop-glue for `{:?}`", substs } - no_force - } - } - - Other { - query foreign_modules(_: CrateNum) -> &'tcx [ForeignModule] { - desc { "looking up the foreign modules of a linked crate" } - } - - /// Identifies the entry-point (e.g., the `main` function) for a given - /// crate, returning `None` if there is no entry point (such as for library crates). - query entry_fn(_: CrateNum) -> Option<(DefId, EntryFnType)> { - desc { "looking up the entry function of a crate" } - } - query plugin_registrar_fn(_: CrateNum) -> Option<DefId> { - desc { "looking up the plugin registrar for a crate" } - } - query proc_macro_decls_static(_: CrateNum) -> Option<DefId> { - desc { "looking up the derive registrar for a crate" } - } - query crate_disambiguator(_: CrateNum) -> CrateDisambiguator { - eval_always - desc { "looking up the disambiguator a crate" } - } - query crate_hash(_: CrateNum) -> Svh { - eval_always - desc { "looking up the hash a crate" } - } - query crate_host_hash(_: CrateNum) -> Option<Svh> { - eval_always - desc { "looking up the hash of a host version of a crate" } - } - query original_crate_name(_: CrateNum) -> Symbol { - eval_always - desc { "looking up the original name a crate" } - } - query extra_filename(_: CrateNum) -> String { - eval_always - desc { "looking up the extra filename for a crate" } - } - } - - TypeChecking { - query implementations_of_trait(_: (CrateNum, DefId)) - -> &'tcx [DefId] { - no_force - desc { "looking up implementations of a trait in a crate" } - } - query all_trait_implementations(_: CrateNum) - -> &'tcx [DefId] { - desc { "looking up all (?) trait implementations" } - } - } - - Other { - query dllimport_foreign_items(_: CrateNum) - -> &'tcx FxHashSet<DefId> { - desc { "dllimport_foreign_items" } - } - query is_dllimport_foreign_item(_: DefId) -> bool {} - query is_statically_included_foreign_item(_: DefId) -> bool {} - query native_library_kind(_: DefId) - -> Option<NativeLibraryKind> {} - } - - Linking { - query link_args(_: CrateNum) -> Lrc<Vec<String>> { - eval_always - desc { "looking up link arguments for a crate" } - } - } - - BorrowChecking { - /// Lifetime resolution. See `middle::resolve_lifetimes`. - query resolve_lifetimes(_: CrateNum) -> &'tcx ResolveLifetimes { - desc { "resolving lifetimes" } - } - query named_region_map(_: DefIndex) -> - Option<&'tcx FxHashMap<ItemLocalId, Region>> { - desc { "looking up a named region" } - } - query is_late_bound_map(_: DefIndex) -> - Option<&'tcx FxHashSet<ItemLocalId>> { - desc { "testing if a region is late bound" } - } - query object_lifetime_defaults_map(_: DefIndex) - -> Option<&'tcx FxHashMap<ItemLocalId, Vec<ObjectLifetimeDefault>>> { - desc { "looking up lifetime defaults for a region" } - } - } - - TypeChecking { - query visibility(_: DefId) -> ty::Visibility {} - } - - Other { - query dep_kind(_: CrateNum) -> DepKind { - eval_always - desc { "fetching what a dependency looks like" } - } - query crate_name(_: CrateNum) -> Symbol { - eval_always - desc { "fetching what a crate is named" } - } - query item_children(_: DefId) -> &'tcx [Export<hir::HirId>] {} - query extern_mod_stmt_cnum(_: DefId) -> Option<CrateNum> {} - - query get_lib_features(_: CrateNum) -> &'tcx LibFeatures { - eval_always - desc { "calculating the lib features map" } - } - query defined_lib_features(_: CrateNum) - -> &'tcx [(Symbol, Option<Symbol>)] { - desc { "calculating the lib features defined in a crate" } - } - /// Returns the lang items defined in another crate by loading it from metadata. - // FIXME: It is illegal to pass a `CrateNum` other than `LOCAL_CRATE` here, just get rid - // of that argument? - query get_lang_items(_: CrateNum) -> &'tcx LanguageItems { - eval_always - desc { "calculating the lang items map" } - } - - /// Returns all diagnostic items defined in all crates. - query all_diagnostic_items(_: CrateNum) -> &'tcx FxHashMap<Symbol, DefId> { - eval_always - desc { "calculating the diagnostic items map" } - } - - /// Returns the lang items defined in another crate by loading it from metadata. - query defined_lang_items(_: CrateNum) -> &'tcx [(DefId, usize)] { - desc { "calculating the lang items defined in a crate" } - } - - /// Returns the diagnostic items defined in a crate. - query diagnostic_items(_: CrateNum) -> &'tcx FxHashMap<Symbol, DefId> { - desc { "calculating the diagnostic items map in a crate" } - } - - query missing_lang_items(_: CrateNum) -> &'tcx [LangItem] { - desc { "calculating the missing lang items in a crate" } - } - query visible_parent_map(_: CrateNum) - -> &'tcx DefIdMap<DefId> { - desc { "calculating the visible parent map" } - } - query missing_extern_crate_item(_: CrateNum) -> bool { - eval_always - desc { "seeing if we're missing an `extern crate` item for this crate" } - } - query used_crate_source(_: CrateNum) -> Lrc<CrateSource> { - eval_always - desc { "looking at the source for a crate" } - } - query postorder_cnums(_: CrateNum) -> &'tcx [CrateNum] { - eval_always - desc { "generating a postorder list of CrateNums" } - } - - query upvars(_: DefId) -> Option<&'tcx FxIndexMap<hir::HirId, hir::Upvar>> { - eval_always - } - query maybe_unused_trait_import(_: DefId) -> bool { - eval_always - } - query maybe_unused_extern_crates(_: CrateNum) - -> &'tcx [(DefId, Span)] { - eval_always - desc { "looking up all possibly unused extern crates" } - } - query names_imported_by_glob_use(_: DefId) - -> Lrc<FxHashSet<ast::Name>> { - eval_always - } - - query stability_index(_: CrateNum) -> &'tcx stability::Index<'tcx> { - eval_always - desc { "calculating the stability index for the local crate" } - } - query all_crate_nums(_: CrateNum) -> &'tcx [CrateNum] { - eval_always - desc { "fetching all foreign CrateNum instances" } - } - - /// A vector of every trait accessible in the whole crate - /// (i.e., including those from subcrates). This is used only for - /// error reporting. - query all_traits(_: CrateNum) -> &'tcx [DefId] { - desc { "fetching all foreign and local traits" } - } - } - - Linking { - /// The list of symbols exported from the given crate. - /// - /// - All names contained in `exported_symbols(cnum)` are guaranteed to - /// correspond to a publicly visible symbol in `cnum` machine code. - /// - The `exported_symbols` sets of different crates do not intersect. - query exported_symbols(_: CrateNum) - -> Arc<Vec<(ExportedSymbol<'tcx>, SymbolExportLevel)>> { - desc { "exported_symbols" } - } - } - - Codegen { - query collect_and_partition_mono_items(_: CrateNum) - -> (Arc<DefIdSet>, Arc<Vec<Arc<CodegenUnit<'tcx>>>>) { - eval_always - desc { "collect_and_partition_mono_items" } - } - query is_codegened_item(_: DefId) -> bool {} - query codegen_unit(_: Symbol) -> Arc<CodegenUnit<'tcx>> { - no_force - desc { "codegen_unit" } - } - query backend_optimization_level(_: CrateNum) -> OptLevel { - desc { "optimization level used by backend" } - } - } - - Other { - query output_filenames(_: CrateNum) -> Arc<OutputFilenames> { - eval_always - desc { "output_filenames" } - } - } - - TypeChecking { - /// Do not call this query directly: invoke `normalize` instead. - query normalize_projection_ty( - goal: CanonicalProjectionGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, NormalizationResult<'tcx>>>, - NoSolution, - > { - no_force - desc { "normalizing `{:?}`", goal } - } - - /// Do not call this query directly: invoke `normalize_erasing_regions` instead. - query normalize_ty_after_erasing_regions( - goal: ParamEnvAnd<'tcx, Ty<'tcx>> - ) -> Ty<'tcx> { - no_force - desc { "normalizing `{:?}`", goal } - } - - query implied_outlives_bounds( - goal: CanonicalTyGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, Vec<OutlivesBound<'tcx>>>>, - NoSolution, - > { - no_force - desc { "computing implied outlives bounds for `{:?}`", goal } - } - - /// Do not call this query directly: invoke `infcx.at().dropck_outlives()` instead. - query dropck_outlives( - goal: CanonicalTyGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, DropckOutlivesResult<'tcx>>>, - NoSolution, - > { - no_force - desc { "computing dropck types for `{:?}`", goal } - } - - /// Do not call this query directly: invoke `infcx.predicate_may_hold()` or - /// `infcx.predicate_must_hold()` instead. - query evaluate_obligation( - goal: CanonicalPredicateGoal<'tcx> - ) -> Result<traits::EvaluationResult, traits::OverflowError> { - no_force - desc { "evaluating trait selection obligation `{}`", goal.value.value } - } - - query evaluate_goal( - goal: traits::ChalkCanonicalGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>, - NoSolution - > { - no_force - desc { "evaluating trait selection obligation `{}`", goal.value.goal } - } - - /// Do not call this query directly: part of the `Eq` type-op - query type_op_ascribe_user_type( - goal: CanonicalTypeOpAscribeUserTypeGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>, - NoSolution, - > { - no_force - desc { "evaluating `type_op_ascribe_user_type` `{:?}`", goal } - } - - /// Do not call this query directly: part of the `Eq` type-op - query type_op_eq( - goal: CanonicalTypeOpEqGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>, - NoSolution, - > { - no_force - desc { "evaluating `type_op_eq` `{:?}`", goal } - } - - /// Do not call this query directly: part of the `Subtype` type-op - query type_op_subtype( - goal: CanonicalTypeOpSubtypeGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>, - NoSolution, - > { - no_force - desc { "evaluating `type_op_subtype` `{:?}`", goal } - } - - /// Do not call this query directly: part of the `ProvePredicate` type-op - query type_op_prove_predicate( - goal: CanonicalTypeOpProvePredicateGoal<'tcx> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>, - NoSolution, - > { - no_force - desc { "evaluating `type_op_prove_predicate` `{:?}`", goal } - } - - /// Do not call this query directly: part of the `Normalize` type-op - query type_op_normalize_ty( - goal: CanonicalTypeOpNormalizeGoal<'tcx, Ty<'tcx>> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, Ty<'tcx>>>, - NoSolution, - > { - no_force - desc { "normalizing `{:?}`", goal } - } - - /// Do not call this query directly: part of the `Normalize` type-op - query type_op_normalize_predicate( - goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::Predicate<'tcx>> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::Predicate<'tcx>>>, - NoSolution, - > { - no_force - desc { "normalizing `{:?}`", goal } - } - - /// Do not call this query directly: part of the `Normalize` type-op - query type_op_normalize_poly_fn_sig( - goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::PolyFnSig<'tcx>> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::PolyFnSig<'tcx>>>, - NoSolution, - > { - no_force - desc { "normalizing `{:?}`", goal } - } - - /// Do not call this query directly: part of the `Normalize` type-op - query type_op_normalize_fn_sig( - goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::FnSig<'tcx>> - ) -> Result< - &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::FnSig<'tcx>>>, - NoSolution, - > { - no_force - desc { "normalizing `{:?}`", goal } - } - - query substitute_normalize_and_test_predicates(key: (DefId, SubstsRef<'tcx>)) -> bool { - no_force - desc { |tcx| - "testing substituted normalized predicates:`{}`", - tcx.def_path_str(key.0) - } - } - - query method_autoderef_steps( - goal: CanonicalTyGoal<'tcx> - ) -> MethodAutoderefStepsResult<'tcx> { - no_force - desc { "computing autoderef types for `{:?}`", goal } - } - } - - Other { - query target_features_whitelist(_: CrateNum) -> &'tcx FxHashMap<String, Option<Symbol>> { - eval_always - desc { "looking up the whitelist of target features" } - } - - // Get an estimate of the size of an InstanceDef based on its MIR for CGU partitioning. - query instance_def_size_estimate(def: ty::InstanceDef<'tcx>) - -> usize { - no_force - desc { |tcx| "estimating size for `{}`", tcx.def_path_str(def.def_id()) } - } - - query features_query(_: CrateNum) -> &'tcx rustc_feature::Features { - eval_always - desc { "looking up enabled feature gates" } - } - } -} |