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Make selection and evaluation caches use constness

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Deadbeef 2021-07-24 19:12:24 +08:00
parent 36ace4c0ad
commit 3bab45d2ac
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2 changed files with 59 additions and 32 deletions
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4
compiler/rustc_middle/src/traits/select.rs
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@ -12,12 +12,12 @@ use rustc_hir::def_id::DefId;
use rustc_query_system::cache::Cache;
pub type SelectionCache<'tcx> = Cache<
ty::ParamEnvAnd<'tcx, ty::TraitRef<'tcx>>,
ty::ConstnessAnd<ty::ParamEnvAnd<'tcx, ty::TraitRef<'tcx>>>,
SelectionResult<'tcx, SelectionCandidate<'tcx>>,
>;
pub type EvaluationCache<'tcx> =
Cache<ty::ParamEnvAnd<'tcx, ty::PolyTraitRef<'tcx>>, EvaluationResult>;
Cache<ty::ParamEnvAnd<'tcx, ty::ConstnessAnd<ty::PolyTraitRef<'tcx>>>, EvaluationResult>;
/// The selection process begins by considering all impls, where
/// clauses, and so forth that might resolve an obligation. Sometimes