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Co-authored-by: lcnr <rust@lcnr.de>
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Michael Goulet 2023-07-24 08:37:40 -07:00 committed by GitHub
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commit 3ad3bb64d9
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3 changed files with 5 additions and 4 deletions
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5
compiler/rustc_trait_selection/src/solve/alias_relate.rs
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//! Implements the `AliasRelate` goal, which is used to unify two aliases in the //! Implements the `AliasRelate` goal, which is used when unifying aliases.
//! new solver, which uses "lazy normalization". //! Doing this via a separate goal is called "deferred alias relation" and part
//! of our more general approach to "lazy normalization".
//! //!
//! This goal, e.g. `A alias-relate B`, may be satisfied by one of three branches: //! This goal, e.g. `A alias-relate B`, may be satisfied by one of three branches:
//! * normalizes-to: If `A` is a projection, we can prove the equivalent //! * normalizes-to: If `A` is a projection, we can prove the equivalent

2
compiler/rustc_trait_selection/src/solve/mod.rs
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//! As a user of rust, you can use `-Ztrait-solver=next` or `next-coherence` //! As a user of rust, you can use `-Ztrait-solver=next` or `next-coherence`
//! to enable the new trait solver always, or just within coherence, respectively. //! to enable the new trait solver always, or just within coherence, respectively.
//! //!
//! As a developer of rustc, you probably shouldn't be using the new trait //! As a developer of rustc, you shouldn't be using the new trait
//! solver without asking the trait-system-refactor-initiative, but it can //! solver without asking the trait-system-refactor-initiative, but it can
//! be enabled with `InferCtxtBuilder::with_next_trait_solver`. This will //! be enabled with `InferCtxtBuilder::with_next_trait_solver`. This will
//! ensure that trait solving using that inference context will be routed //! ensure that trait solving using that inference context will be routed

2
compiler/rustc_trait_selection/src/solve/weak_types.rs
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@ -2,7 +2,7 @@
//! `#![feature(lazy_type_alias)]` and `#![feature(type_alias_impl_trait)]`. //! `#![feature(lazy_type_alias)]` and `#![feature(type_alias_impl_trait)]`.
//! //!
//! Since a weak alias is not ambiguous, this just computes the `type_of` of //! Since a weak alias is not ambiguous, this just computes the `type_of` of
//! the alias and registers any where-clause predicates on the type alias. //! the alias and registers the where-clauses of the type alias.
use rustc_middle::traits::solve::{Certainty, Goal, QueryResult}; use rustc_middle::traits::solve::{Certainty, Goal, QueryResult};
use rustc_middle::ty; use rustc_middle::ty;