1 use crate::ty::query::QueryDescription;
2 use crate::ty::query::queries;
3 use crate::ty::{self, ParamEnvAnd, Ty, TyCtxt};
4 use crate::ty::subst::SubstsRef;
5 use crate::dep_graph::SerializedDepNodeIndex;
6 use crate::hir::def_id::{CrateNum, DefId, DefIndex};
8 use crate::mir::interpret::GlobalId;
10 use crate::traits::query::{
11 CanonicalPredicateGoal, CanonicalProjectionGoal,
12 CanonicalTyGoal, CanonicalTypeOpAscribeUserTypeGoal,
13 CanonicalTypeOpEqGoal, CanonicalTypeOpSubtypeGoal, CanonicalTypeOpProvePredicateGoal,
14 CanonicalTypeOpNormalizeGoal,
18 use syntax_pos::symbol::InternedString;
21 // Each of these queries corresponds to a function pointer field in the
22 // `Providers` struct for requesting a value of that type, and a method
23 // on `tcx: TyCtxt` (and `tcx.at(span)`) for doing that request in a way
24 // which memoizes and does dep-graph tracking, wrapping around the actual
25 // `Providers` that the driver creates (using several `rustc_*` crates).
27 // The result type of each query must implement `Clone`, and additionally
28 // `ty::query::values::Value`, which produces an appropriate placeholder
29 // (error) value if the query resulted in a query cycle.
30 // Queries marked with `fatal_cycle` do not need the latter implementation,
31 // as they will raise an fatal error on query cycles instead.
34 /// Records the type of every item.
35 query type_of(key: DefId) -> Ty<'tcx> {
36 cache { key.is_local() }
39 /// Maps from the `DefId` of an item (trait/struct/enum/fn) to its
40 /// associated generics.
41 query generics_of(key: DefId) -> &'tcx ty::Generics {
42 cache { key.is_local() }
43 load_cached(tcx, id) {
44 let generics: Option<ty::Generics> = tcx.queries.on_disk_cache
45 .try_load_query_result(tcx, id);
46 generics.map(|x| &*tcx.arena.alloc(x))
50 /// Maps from the `DefId` of an item (trait/struct/enum/fn) to the
51 /// predicates (where-clauses) that must be proven true in order
52 /// to reference it. This is almost always the "predicates query"
55 /// `predicates_of` builds on `predicates_defined_on` -- in fact,
56 /// it is almost always the same as that query, except for the
57 /// case of traits. For traits, `predicates_of` contains
58 /// an additional `Self: Trait<...>` predicate that users don't
59 /// actually write. This reflects the fact that to invoke the
60 /// trait (e.g., via `Default::default`) you must supply types
61 /// that actually implement the trait. (However, this extra
62 /// predicate gets in the way of some checks, which are intended
63 /// to operate over only the actual where-clauses written by the
65 query predicates_of(_: DefId) -> &'tcx ty::GenericPredicates<'tcx> {}
67 query native_libraries(_: CrateNum) -> Lrc<Vec<NativeLibrary>> {
68 desc { "looking up the native libraries of a linked crate" }
71 query lint_levels(_: CrateNum) -> &'tcx lint::LintLevelMap {
73 desc { "computing the lint levels for items in this crate" }
78 query is_panic_runtime(_: CrateNum) -> bool {
80 desc { "checking if the crate is_panic_runtime" }
85 /// Set of all the `DefId`s in this crate that have MIR associated with
86 /// them. This includes all the body owners, but also things like struct
88 query mir_keys(_: CrateNum) -> &'tcx DefIdSet {
89 desc { "getting a list of all mir_keys" }
92 /// Maps DefId's that have an associated `mir::Body` to the result
93 /// of the MIR qualify_consts pass. The actual meaning of
94 /// the value isn't known except to the pass itself.
95 query mir_const_qualif(key: DefId) -> (u8, &'tcx BitSet<mir::Local>) {
96 cache { key.is_local() }
99 /// Fetch the MIR for a given `DefId` right after it's built - this includes
100 /// unreachable code.
101 query mir_built(_: DefId) -> &'tcx Steal<mir::Body<'tcx>> {}
103 /// Fetch the MIR for a given `DefId` up till the point where it is
104 /// ready for const evaluation.
106 /// See the README for the `mir` module for details.
107 query mir_const(_: DefId) -> &'tcx Steal<mir::Body<'tcx>> {
111 query mir_validated(_: DefId) -> &'tcx Steal<mir::Body<'tcx>> {
115 /// MIR after our optimization passes have run. This is MIR that is ready
116 /// for codegen. This is also the only query that can fetch non-local MIR, at present.
117 query optimized_mir(key: DefId) -> &'tcx mir::Body<'tcx> {
118 cache { key.is_local() }
119 load_cached(tcx, id) {
120 let mir: Option<crate::mir::Body<'tcx>> = tcx.queries.on_disk_cache
121 .try_load_query_result(tcx, id);
122 mir.map(|x| &*tcx.arena.alloc(x))
128 // Erases regions from `ty` to yield a new type.
129 // Normally you would just use `tcx.erase_regions(&value)`,
130 // however, which uses this query as a kind of cache.
131 query erase_regions_ty(ty: Ty<'tcx>) -> Ty<'tcx> {
132 // This query is not expected to have input -- as a result, it
133 // is not a good candidates for "replay" because it is essentially a
134 // pure function of its input (and hence the expectation is that
135 // no caller would be green **apart** from just these
136 // queries). Making it anonymous avoids hashing the result, which
137 // may save a bit of time.
140 desc { "erasing regions from `{:?}`", ty }
143 query program_clauses_for(_: DefId) -> Clauses<'tcx> {
144 desc { "generating chalk-style clauses" }
147 query program_clauses_for_env(_: traits::Environment<'tcx>) -> Clauses<'tcx> {
149 desc { "generating chalk-style clauses for environment" }
152 // Get the chalk-style environment of the given item.
153 query environment(_: DefId) -> traits::Environment<'tcx> {
154 desc { "return a chalk-style environment" }
159 query wasm_import_module_map(_: CrateNum) -> &'tcx FxHashMap<DefId, String> {
160 desc { "wasm import module map" }
165 /// Maps from the `DefId` of an item (trait/struct/enum/fn) to the
166 /// predicates (where-clauses) directly defined on it. This is
167 /// equal to the `explicit_predicates_of` predicates plus the
168 /// `inferred_outlives_of` predicates.
169 query predicates_defined_on(_: DefId)
170 -> &'tcx ty::GenericPredicates<'tcx> {}
172 /// Returns the predicates written explicitly by the user.
173 query explicit_predicates_of(_: DefId)
174 -> &'tcx ty::GenericPredicates<'tcx> {}
176 /// Returns the inferred outlives predicates (e.g., for `struct
177 /// Foo<'a, T> { x: &'a T }`, this would return `T: 'a`).
178 query inferred_outlives_of(_: DefId) -> &'tcx [ty::Predicate<'tcx>] {}
180 /// Maps from the `DefId` of a trait to the list of
181 /// super-predicates. This is a subset of the full list of
182 /// predicates. We store these in a separate map because we must
183 /// evaluate them even during type conversion, often before the
184 /// full predicates are available (note that supertraits have
185 /// additional acyclicity requirements).
186 query super_predicates_of(key: DefId) -> &'tcx ty::GenericPredicates<'tcx> {
187 desc { |tcx| "computing the supertraits of `{}`", tcx.def_path_str(key) }
190 /// To avoid cycles within the predicates of a single item we compute
191 /// per-type-parameter predicates for resolving `T::AssocTy`.
192 query type_param_predicates(key: (DefId, DefId))
193 -> &'tcx ty::GenericPredicates<'tcx> {
195 desc { |tcx| "computing the bounds for type parameter `{}`", {
196 let id = tcx.hir().as_local_hir_id(key.1).unwrap();
197 tcx.hir().ty_param_name(id)
201 query trait_def(_: DefId) -> &'tcx ty::TraitDef {}
202 query adt_def(_: DefId) -> &'tcx ty::AdtDef {}
203 query adt_destructor(_: DefId) -> Option<ty::Destructor> {}
205 // The cycle error here should be reported as an error by `check_representable`.
206 // We consider the type as Sized in the meanwhile to avoid
207 // further errors (done in impl Value for AdtSizedConstraint).
208 // Use `cycle_delay_bug` to delay the cycle error here to be emitted later
209 // in case we accidentally otherwise don't emit an error.
210 query adt_sized_constraint(
212 ) -> AdtSizedConstraint<'tcx> {
216 query adt_dtorck_constraint(
218 ) -> Result<DtorckConstraint<'tcx>, NoSolution> {}
220 /// Returns `true` if this is a const fn, use the `is_const_fn` to know whether your crate
221 /// actually sees it as const fn (e.g., the const-fn-ness might be unstable and you might
222 /// not have the feature gate active).
224 /// **Do not call this function manually.** It is only meant to cache the base data for the
225 /// `is_const_fn` function.
226 query is_const_fn_raw(key: DefId) -> bool {
227 desc { |tcx| "checking if item is const fn: `{}`", tcx.def_path_str(key) }
230 /// Returns `true` if calls to the function may be promoted.
232 /// This is either because the function is e.g., a tuple-struct or tuple-variant
233 /// constructor, or because it has the `#[rustc_promotable]` attribute. The attribute should
234 /// be removed in the future in favour of some form of check which figures out whether the
235 /// function does not inspect the bits of any of its arguments (so is essentially just a
236 /// constructor function).
237 query is_promotable_const_fn(_: DefId) -> bool {}
239 query const_fn_is_allowed_fn_ptr(_: DefId) -> bool {}
241 /// Returns `true` if this is a foreign item (i.e., linked via `extern { ... }`).
242 query is_foreign_item(_: DefId) -> bool {}
244 /// Returns `Some(mutability)` if the node pointed to by `def_id` is a static item.
245 query static_mutability(_: DefId) -> Option<hir::Mutability> {}
247 /// Gets a map with the variance of every item; use `item_variance` instead.
248 query crate_variances(_: CrateNum) -> &'tcx ty::CrateVariancesMap<'tcx> {
249 desc { "computing the variances for items in this crate" }
252 /// Maps from the `DefId` of a type or region parameter to its (inferred) variance.
253 query variances_of(_: DefId) -> &'tcx [ty::Variance] {}
257 /// Maps from thee `DefId` of a type to its (inferred) outlives.
258 query inferred_outlives_crate(_: CrateNum)
259 -> &'tcx ty::CratePredicatesMap<'tcx> {
260 desc { "computing the inferred outlives predicates for items in this crate" }
265 /// Maps from an impl/trait `DefId to a list of the `DefId`s of its items.
266 query associated_item_def_ids(_: DefId) -> &'tcx [DefId] {}
268 /// Maps from a trait item to the trait item "descriptor".
269 query associated_item(_: DefId) -> ty::AssocItem {}
271 query impl_trait_ref(_: DefId) -> Option<ty::TraitRef<'tcx>> {}
272 query impl_polarity(_: DefId) -> hir::ImplPolarity {}
274 query issue33140_self_ty(_: DefId) -> Option<ty::Ty<'tcx>> {}
278 /// Maps a `DefId` of a type to a list of its inherent impls.
279 /// Contains implementations of methods that are inherent to a type.
280 /// Methods in these implementations don't need to be exported.
281 query inherent_impls(_: DefId) -> &'tcx [DefId] {
287 /// The result of unsafety-checking this `DefId`.
288 query unsafety_check_result(_: DefId) -> mir::UnsafetyCheckResult {}
290 /// HACK: when evaluated, this reports a "unsafe derive on repr(packed)" error
291 query unsafe_derive_on_repr_packed(_: DefId) -> () {}
293 /// The signature of functions and closures.
294 query fn_sig(_: DefId) -> ty::PolyFnSig<'tcx> {}
298 query lint_mod(key: DefId) -> () {
299 desc { |tcx| "linting {}", key.describe_as_module(tcx) }
302 /// Checks the attributes in the module.
303 query check_mod_attrs(key: DefId) -> () {
304 desc { |tcx| "checking attributes in {}", key.describe_as_module(tcx) }
307 query check_mod_unstable_api_usage(key: DefId) -> () {
308 desc { |tcx| "checking for unstable API usage in {}", key.describe_as_module(tcx) }
311 /// Checks the loops in the module.
312 query check_mod_loops(key: DefId) -> () {
313 desc { |tcx| "checking loops in {}", key.describe_as_module(tcx) }
316 query check_mod_item_types(key: DefId) -> () {
317 desc { |tcx| "checking item types in {}", key.describe_as_module(tcx) }
320 query check_mod_privacy(key: DefId) -> () {
321 desc { |tcx| "checking privacy in {}", key.describe_as_module(tcx) }
324 query check_mod_intrinsics(key: DefId) -> () {
325 desc { |tcx| "checking intrinsics in {}", key.describe_as_module(tcx) }
328 query check_mod_liveness(key: DefId) -> () {
329 desc { |tcx| "checking liveness of variables in {}", key.describe_as_module(tcx) }
332 query check_mod_impl_wf(key: DefId) -> () {
333 desc { |tcx| "checking that impls are well-formed in {}", key.describe_as_module(tcx) }
336 query collect_mod_item_types(key: DefId) -> () {
337 desc { |tcx| "collecting item types in {}", key.describe_as_module(tcx) }
340 /// Caches `CoerceUnsized` kinds for impls on custom types.
341 query coerce_unsized_info(_: DefId)
342 -> ty::adjustment::CoerceUnsizedInfo {}
346 query typeck_item_bodies(_: CrateNum) -> () {
347 desc { "type-checking all item bodies" }
350 query typeck_tables_of(key: DefId) -> &'tcx ty::TypeckTables<'tcx> {
351 cache { key.is_local() }
352 load_cached(tcx, id) {
353 let typeck_tables: Option<ty::TypeckTables<'tcx>> = tcx
354 .queries.on_disk_cache
355 .try_load_query_result(tcx, id);
357 typeck_tables.map(|tables| &*tcx.arena.alloc(tables))
363 query used_trait_imports(_: DefId) -> &'tcx DefIdSet {}
367 query has_typeck_tables(_: DefId) -> bool {}
369 query coherent_trait(def_id: DefId) -> () {
370 desc { |tcx| "coherence checking all impls of trait `{}`", tcx.def_path_str(def_id) }
375 query borrowck(_: DefId) -> &'tcx BorrowCheckResult {}
377 /// Borrow-checks the function body. If this is a closure, returns
378 /// additional requirements that the closure's creator must verify.
379 query mir_borrowck(_: DefId) -> mir::BorrowCheckResult<'tcx> {}
383 /// Gets a complete map from all types to their inherent impls.
384 /// Not meant to be used directly outside of coherence.
385 /// (Defined only for `LOCAL_CRATE`.)
386 query crate_inherent_impls(k: CrateNum)
387 -> &'tcx CrateInherentImpls {
389 desc { "all inherent impls defined in crate `{:?}`", k }
392 /// Checks all types in the crate for overlap in their inherent impls. Reports errors.
393 /// Not meant to be used directly outside of coherence.
394 /// (Defined only for `LOCAL_CRATE`.)
395 query crate_inherent_impls_overlap_check(_: CrateNum)
398 desc { "check for overlap between inherent impls defined in this crate" }
403 /// Evaluates a constant without running sanity checks.
405 /// **Do not use this** outside const eval. Const eval uses this to break query cycles
406 /// during validation. Please add a comment to every use site explaining why using
407 /// `const_eval` isn't sufficient.
408 query const_eval_raw(key: ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>)
409 -> ConstEvalRawResult<'tcx> {
412 "const-evaluating `{}`",
413 tcx.def_path_str(key.value.instance.def.def_id())
416 load_cached(tcx, id) {
417 tcx.queries.on_disk_cache.try_load_query_result(tcx, id).map(Ok)
421 /// Results of evaluating const items or constants embedded in
422 /// other items (such as enum variant explicit discriminants).
423 query const_eval(key: ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>)
424 -> ConstEvalResult<'tcx> {
427 "const-evaluating + checking `{}`",
428 tcx.def_path_str(key.value.instance.def.def_id())
431 load_cached(tcx, id) {
432 tcx.queries.on_disk_cache.try_load_query_result(tcx, id).map(Ok)
436 /// Extracts a field of a (variant of a) const.
438 key: ty::ParamEnvAnd<'tcx, (&'tcx ty::Const<'tcx>, mir::Field)>
439 ) -> &'tcx ty::Const<'tcx> {
442 desc { "extract field of const" }
447 query check_match(_: DefId) -> () {}
449 /// Performs part of the privacy check and computes "access levels".
450 query privacy_access_levels(_: CrateNum) -> &'tcx AccessLevels {
452 desc { "privacy access levels" }
454 query check_private_in_public(_: CrateNum) -> () {
456 desc { "checking for private elements in public interfaces" }
461 query reachable_set(_: CrateNum) -> ReachableSet {
462 desc { "reachability" }
465 /// Per-body `region::ScopeTree`. The `DefId` should be the owner `DefId` for the body;
466 /// in the case of closures, this will be redirected to the enclosing function.
467 query region_scope_tree(_: DefId) -> &'tcx region::ScopeTree {}
469 query mir_shims(key: ty::InstanceDef<'tcx>) -> &'tcx mir::Body<'tcx> {
471 desc { |tcx| "generating MIR shim for `{}`", tcx.def_path_str(key.def_id()) }
474 query symbol_name(key: ty::Instance<'tcx>) -> ty::SymbolName {
476 desc { "computing the symbol for `{}`", key }
480 query def_kind(_: DefId) -> Option<DefKind> {}
481 query def_span(_: DefId) -> Span {
482 // FIXME(mw): DefSpans are not really inputs since they are derived from
483 // HIR. But at the moment HIR hashing still contains some hacks that allow
484 // to make type debuginfo to be source location independent. Declaring
485 // DefSpan an input makes sure that changes to these are always detected
486 // regardless of HIR hashing.
489 query lookup_stability(_: DefId) -> Option<&'tcx attr::Stability> {}
490 query lookup_deprecation_entry(_: DefId) -> Option<DeprecationEntry> {}
491 query item_attrs(_: DefId) -> Lrc<[ast::Attribute]> {}
495 query codegen_fn_attrs(_: DefId) -> CodegenFnAttrs {}
499 query fn_arg_names(_: DefId) -> Vec<ast::Name> {}
500 /// Gets the rendered value of the specified constant or associated constant.
502 query rendered_const(_: DefId) -> String {}
503 query impl_parent(_: DefId) -> Option<DefId> {}
507 query trait_of_item(_: DefId) -> Option<DefId> {}
508 query const_is_rvalue_promotable_to_static(key: DefId) -> bool {
510 "const checking if rvalue is promotable to static `{}`",
511 tcx.def_path_str(key)
515 query rvalue_promotable_map(key: DefId) -> &'tcx ItemLocalSet {
517 "checking which parts of `{}` are promotable to static",
518 tcx.def_path_str(key)
524 query is_mir_available(key: DefId) -> bool {
525 desc { |tcx| "checking if item has mir available: `{}`", tcx.def_path_str(key) }
530 query vtable_methods(key: ty::PolyTraitRef<'tcx>)
531 -> &'tcx [Option<(DefId, SubstsRef<'tcx>)>] {
533 desc { |tcx| "finding all methods for trait {}", tcx.def_path_str(key.def_id()) }
538 query codegen_fulfill_obligation(
539 key: (ty::ParamEnv<'tcx>, ty::PolyTraitRef<'tcx>)
540 ) -> Vtable<'tcx, ()> {
544 "checking if `{}` fulfills its obligations",
545 tcx.def_path_str(key.1.def_id())
551 query trait_impls_of(key: DefId) -> &'tcx ty::trait_def::TraitImpls {
552 desc { |tcx| "trait impls of `{}`", tcx.def_path_str(key) }
554 query specialization_graph_of(_: DefId) -> &'tcx specialization_graph::Graph {}
555 query is_object_safe(key: DefId) -> bool {
556 desc { |tcx| "determine object safety of trait `{}`", tcx.def_path_str(key) }
559 /// Gets the ParameterEnvironment for a given item; this environment
560 /// will be in "user-facing" mode, meaning that it is suitabe for
561 /// type-checking etc, and it does not normalize specializable
562 /// associated types. This is almost always what you want,
563 /// unless you are doing MIR optimizations, in which case you
564 /// might want to use `reveal_all()` method to change modes.
565 query param_env(_: DefId) -> ty::ParamEnv<'tcx> {}
567 /// Trait selection queries. These are best used by invoking `ty.is_copy_modulo_regions()`,
568 /// `ty.is_copy()`, etc, since that will prune the environment where possible.
569 query is_copy_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
571 desc { "computing whether `{}` is `Copy`", env.value }
573 query is_sized_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
575 desc { "computing whether `{}` is `Sized`", env.value }
577 query is_freeze_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
579 desc { "computing whether `{}` is freeze", env.value }
582 // The cycle error here should be reported as an error by `check_representable`.
583 // We consider the type as not needing drop in the meanwhile to avoid
584 // further errors (done in impl Value for NeedsDrop).
585 // Use `cycle_delay_bug` to delay the cycle error here to be emitted later
586 // in case we accidentally otherwise don't emit an error.
587 query needs_drop_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> NeedsDrop {
590 desc { "computing whether `{}` needs drop", env.value }
594 env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>
595 ) -> Result<&'tcx ty::layout::LayoutDetails, ty::layout::LayoutError<'tcx>> {
597 desc { "computing layout of `{}`", env.value }
602 query dylib_dependency_formats(_: CrateNum)
603 -> &'tcx [(CrateNum, LinkagePreference)] {
604 desc { "dylib dependency formats of crate" }
609 query is_compiler_builtins(_: CrateNum) -> bool {
611 desc { "checking if the crate is_compiler_builtins" }
613 query has_global_allocator(_: CrateNum) -> bool {
615 desc { "checking if the crate has_global_allocator" }
617 query has_panic_handler(_: CrateNum) -> bool {
619 desc { "checking if the crate has_panic_handler" }
621 query is_sanitizer_runtime(_: CrateNum) -> bool {
623 desc { "query a crate is #![sanitizer_runtime]" }
625 query is_profiler_runtime(_: CrateNum) -> bool {
627 desc { "query a crate is #![profiler_runtime]" }
629 query panic_strategy(_: CrateNum) -> PanicStrategy {
631 desc { "query a crate's configured panic strategy" }
633 query is_no_builtins(_: CrateNum) -> bool {
635 desc { "test whether a crate has #![no_builtins]" }
637 query symbol_mangling_version(_: CrateNum) -> SymbolManglingVersion {
639 desc { "query a crate's symbol mangling version" }
642 query extern_crate(_: DefId) -> Option<&'tcx ExternCrate> {
644 desc { "getting crate's ExternCrateData" }
649 query specializes(_: (DefId, DefId)) -> bool {
651 desc { "computing whether impls specialize one another" }
653 query in_scope_traits_map(_: DefIndex)
654 -> Option<&'tcx FxHashMap<ItemLocalId, StableVec<TraitCandidate>>> {
656 desc { "traits in scope at a block" }
661 query module_exports(_: DefId) -> Option<&'tcx [Export<hir::HirId>]> {
667 query impl_defaultness(_: DefId) -> hir::Defaultness {}
669 query check_item_well_formed(_: DefId) -> () {}
670 query check_trait_item_well_formed(_: DefId) -> () {}
671 query check_impl_item_well_formed(_: DefId) -> () {}
675 // The `DefId`s of all non-generic functions and statics in the given crate
676 // that can be reached from outside the crate.
678 // We expect this items to be available for being linked to.
680 // This query can also be called for `LOCAL_CRATE`. In this case it will
681 // compute which items will be reachable to other crates, taking into account
682 // the kind of crate that is currently compiled. Crates with only a
683 // C interface have fewer reachable things.
685 // Does not include external symbols that don't have a corresponding DefId,
686 // like the compiler-generated `main` function and so on.
687 query reachable_non_generics(_: CrateNum)
688 -> &'tcx DefIdMap<SymbolExportLevel> {
689 desc { "looking up the exported symbols of a crate" }
691 query is_reachable_non_generic(_: DefId) -> bool {}
692 query is_unreachable_local_definition(_: DefId) -> bool {}
696 query upstream_monomorphizations(
698 ) -> &'tcx DefIdMap<FxHashMap<SubstsRef<'tcx>, CrateNum>> {
699 desc { "collecting available upstream monomorphizations `{:?}`", k }
701 query upstream_monomorphizations_for(_: DefId)
702 -> Option<&'tcx FxHashMap<SubstsRef<'tcx>, CrateNum>> {}
706 query foreign_modules(_: CrateNum) -> &'tcx [ForeignModule] {
707 desc { "looking up the foreign modules of a linked crate" }
710 /// Identifies the entry-point (e.g., the `main` function) for a given
711 /// crate, returning `None` if there is no entry point (such as for library crates).
712 query entry_fn(_: CrateNum) -> Option<(DefId, EntryFnType)> {
713 desc { "looking up the entry function of a crate" }
715 query plugin_registrar_fn(_: CrateNum) -> Option<DefId> {
716 desc { "looking up the plugin registrar for a crate" }
718 query proc_macro_decls_static(_: CrateNum) -> Option<DefId> {
719 desc { "looking up the derive registrar for a crate" }
721 query crate_disambiguator(_: CrateNum) -> CrateDisambiguator {
723 desc { "looking up the disambiguator a crate" }
725 query crate_hash(_: CrateNum) -> Svh {
727 desc { "looking up the hash a crate" }
729 query original_crate_name(_: CrateNum) -> Symbol {
731 desc { "looking up the original name a crate" }
733 query extra_filename(_: CrateNum) -> String {
735 desc { "looking up the extra filename for a crate" }
740 query implementations_of_trait(_: (CrateNum, DefId))
743 desc { "looking up implementations of a trait in a crate" }
745 query all_trait_implementations(_: CrateNum)
747 desc { "looking up all (?) trait implementations" }
752 query dllimport_foreign_items(_: CrateNum)
753 -> &'tcx FxHashSet<DefId> {
754 desc { "dllimport_foreign_items" }
756 query is_dllimport_foreign_item(_: DefId) -> bool {}
757 query is_statically_included_foreign_item(_: DefId) -> bool {}
758 query native_library_kind(_: DefId)
759 -> Option<NativeLibraryKind> {}
763 query link_args(_: CrateNum) -> Lrc<Vec<String>> {
765 desc { "looking up link arguments for a crate" }
770 // Lifetime resolution. See `middle::resolve_lifetimes`.
771 query resolve_lifetimes(_: CrateNum) -> &'tcx ResolveLifetimes {
772 desc { "resolving lifetimes" }
774 query named_region_map(_: DefIndex) ->
775 Option<&'tcx FxHashMap<ItemLocalId, Region>> {
776 desc { "looking up a named region" }
778 query is_late_bound_map(_: DefIndex) ->
779 Option<&'tcx FxHashSet<ItemLocalId>> {
780 desc { "testing if a region is late bound" }
782 query object_lifetime_defaults_map(_: DefIndex)
783 -> Option<&'tcx FxHashMap<ItemLocalId, Vec<ObjectLifetimeDefault>>> {
784 desc { "looking up lifetime defaults for a region" }
789 query visibility(_: DefId) -> ty::Visibility {}
793 query dep_kind(_: CrateNum) -> DepKind {
795 desc { "fetching what a dependency looks like" }
797 query crate_name(_: CrateNum) -> Symbol {
799 desc { "fetching what a crate is named" }
801 query item_children(_: DefId) -> &'tcx [Export<hir::HirId>] {}
802 query extern_mod_stmt_cnum(_: DefId) -> Option<CrateNum> {}
804 query get_lib_features(_: CrateNum) -> &'tcx LibFeatures {
806 desc { "calculating the lib features map" }
808 query defined_lib_features(_: CrateNum)
809 -> &'tcx [(Symbol, Option<Symbol>)] {
810 desc { "calculating the lib features defined in a crate" }
812 query get_lang_items(_: CrateNum) -> &'tcx LanguageItems {
814 desc { "calculating the lang items map" }
816 query defined_lang_items(_: CrateNum) -> &'tcx [(DefId, usize)] {
817 desc { "calculating the lang items defined in a crate" }
819 query missing_lang_items(_: CrateNum) -> &'tcx [LangItem] {
820 desc { "calculating the missing lang items in a crate" }
822 query visible_parent_map(_: CrateNum)
823 -> &'tcx DefIdMap<DefId> {
824 desc { "calculating the visible parent map" }
826 query missing_extern_crate_item(_: CrateNum) -> bool {
828 desc { "seeing if we're missing an `extern crate` item for this crate" }
830 query used_crate_source(_: CrateNum) -> Lrc<CrateSource> {
832 desc { "looking at the source for a crate" }
834 query postorder_cnums(_: CrateNum) -> &'tcx [CrateNum] {
836 desc { "generating a postorder list of CrateNums" }
839 query upvars(_: DefId) -> Option<&'tcx FxIndexMap<hir::HirId, hir::Upvar>> {
842 query maybe_unused_trait_import(_: DefId) -> bool {
845 query maybe_unused_extern_crates(_: CrateNum)
846 -> &'tcx [(DefId, Span)] {
848 desc { "looking up all possibly unused extern crates" }
850 query names_imported_by_glob_use(_: DefId)
851 -> Lrc<FxHashSet<ast::Name>> {
855 query stability_index(_: CrateNum) -> &'tcx stability::Index<'tcx> {
857 desc { "calculating the stability index for the local crate" }
859 query all_crate_nums(_: CrateNum) -> &'tcx [CrateNum] {
861 desc { "fetching all foreign CrateNum instances" }
864 /// A vector of every trait accessible in the whole crate
865 /// (i.e., including those from subcrates). This is used only for
867 query all_traits(_: CrateNum) -> &'tcx [DefId] {
868 desc { "fetching all foreign and local traits" }
873 query exported_symbols(_: CrateNum)
874 -> Arc<Vec<(ExportedSymbol<'tcx>, SymbolExportLevel)>> {
875 desc { "exported_symbols" }
880 query collect_and_partition_mono_items(_: CrateNum)
881 -> (Arc<DefIdSet>, Arc<Vec<Arc<CodegenUnit<'tcx>>>>) {
883 desc { "collect_and_partition_mono_items" }
885 query is_codegened_item(_: DefId) -> bool {}
886 query codegen_unit(_: InternedString) -> Arc<CodegenUnit<'tcx>> {
888 desc { "codegen_unit" }
890 query backend_optimization_level(_: CrateNum) -> OptLevel {
891 desc { "optimization level used by backend" }
896 query output_filenames(_: CrateNum) -> Arc<OutputFilenames> {
898 desc { "output_filenames" }
903 /// Do not call this query directly: invoke `normalize` instead.
904 query normalize_projection_ty(
905 goal: CanonicalProjectionGoal<'tcx>
907 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, NormalizationResult<'tcx>>>,
911 desc { "normalizing `{:?}`", goal }
914 /// Do not call this query directly: invoke `normalize_erasing_regions` instead.
915 query normalize_ty_after_erasing_regions(
916 goal: ParamEnvAnd<'tcx, Ty<'tcx>>
919 desc { "normalizing `{:?}`", goal }
922 query implied_outlives_bounds(
923 goal: CanonicalTyGoal<'tcx>
925 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, Vec<OutlivesBound<'tcx>>>>,
929 desc { "computing implied outlives bounds for `{:?}`", goal }
932 /// Do not call this query directly: invoke `infcx.at().dropck_outlives()` instead.
933 query dropck_outlives(
934 goal: CanonicalTyGoal<'tcx>
936 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, DropckOutlivesResult<'tcx>>>,
940 desc { "computing dropck types for `{:?}`", goal }
943 /// Do not call this query directly: invoke `infcx.predicate_may_hold()` or
944 /// `infcx.predicate_must_hold()` instead.
945 query evaluate_obligation(
946 goal: CanonicalPredicateGoal<'tcx>
947 ) -> Result<traits::EvaluationResult, traits::OverflowError> {
949 desc { "evaluating trait selection obligation `{}`", goal.value.value }
953 goal: traits::ChalkCanonicalGoal<'tcx>
955 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
959 desc { "evaluating trait selection obligation `{}`", goal.value.goal }
962 /// Do not call this query directly: part of the `Eq` type-op
963 query type_op_ascribe_user_type(
964 goal: CanonicalTypeOpAscribeUserTypeGoal<'tcx>
966 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
970 desc { "evaluating `type_op_ascribe_user_type` `{:?}`", goal }
973 /// Do not call this query directly: part of the `Eq` type-op
975 goal: CanonicalTypeOpEqGoal<'tcx>
977 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
981 desc { "evaluating `type_op_eq` `{:?}`", goal }
984 /// Do not call this query directly: part of the `Subtype` type-op
985 query type_op_subtype(
986 goal: CanonicalTypeOpSubtypeGoal<'tcx>
988 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
992 desc { "evaluating `type_op_subtype` `{:?}`", goal }
995 /// Do not call this query directly: part of the `ProvePredicate` type-op
996 query type_op_prove_predicate(
997 goal: CanonicalTypeOpProvePredicateGoal<'tcx>
999 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
1003 desc { "evaluating `type_op_prove_predicate` `{:?}`", goal }
1006 /// Do not call this query directly: part of the `Normalize` type-op
1007 query type_op_normalize_ty(
1008 goal: CanonicalTypeOpNormalizeGoal<'tcx, Ty<'tcx>>
1010 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, Ty<'tcx>>>,
1014 desc { "normalizing `{:?}`", goal }
1017 /// Do not call this query directly: part of the `Normalize` type-op
1018 query type_op_normalize_predicate(
1019 goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::Predicate<'tcx>>
1021 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::Predicate<'tcx>>>,
1025 desc { "normalizing `{:?}`", goal }
1028 /// Do not call this query directly: part of the `Normalize` type-op
1029 query type_op_normalize_poly_fn_sig(
1030 goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::PolyFnSig<'tcx>>
1032 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::PolyFnSig<'tcx>>>,
1036 desc { "normalizing `{:?}`", goal }
1039 /// Do not call this query directly: part of the `Normalize` type-op
1040 query type_op_normalize_fn_sig(
1041 goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::FnSig<'tcx>>
1043 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::FnSig<'tcx>>>,
1047 desc { "normalizing `{:?}`", goal }
1050 query substitute_normalize_and_test_predicates(key: (DefId, SubstsRef<'tcx>)) -> bool {
1053 "testing substituted normalized predicates:`{}`",
1054 tcx.def_path_str(key.0)
1058 query method_autoderef_steps(
1059 goal: CanonicalTyGoal<'tcx>
1060 ) -> MethodAutoderefStepsResult<'tcx> {
1062 desc { "computing autoderef types for `{:?}`", goal }
1067 query target_features_whitelist(_: CrateNum) -> &'tcx FxHashMap<String, Option<Symbol>> {
1069 desc { "looking up the whitelist of target features" }
1072 // Get an estimate of the size of an InstanceDef based on its MIR for CGU partitioning.
1073 query instance_def_size_estimate(def: ty::InstanceDef<'tcx>)
1076 desc { |tcx| "estimating size for `{}`", tcx.def_path_str(def.def_id()) }
1079 query features_query(_: CrateNum) -> &'tcx feature_gate::Features {
1081 desc { "looking up enabled feature gates" }