bjoernager/rust
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introduce a Coerce predicate

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This commit is contained in:
Niko Matsakis 2020-11-21 07:06:16 -05:00 • committed by Mark Rousskov
parent 5a8edc0b76
commit 947c0de028
24 changed files with 153 additions and 2 deletions
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4
compiler/rustc_traits/src/chalk/lowering.rs
View file

@ -109,6 +109,7 @@ impl<'tcx> LowerInto<'tcx, chalk_ir::InEnvironment<chalk_ir::Goal<RustInterner<'
| ty::PredicateKind::ObjectSafe(..)
| ty::PredicateKind::ClosureKind(..)
| ty::PredicateKind::Subtype(..)
| ty::PredicateKind::Coerce(..)
| ty::PredicateKind::ConstEvaluatable(..)
| ty::PredicateKind::ConstEquate(..) => bug!("unexpected predicate {}", predicate),
};
@ -193,6 +194,7 @@ impl<'tcx> LowerInto<'tcx, chalk_ir::GoalData<RustInterner<'tcx>>> for ty::Predi
// some of these in terms of chalk operations.
ty::PredicateKind::ClosureKind(..)
| ty::PredicateKind::Subtype(..)
| ty::PredicateKind::Coerce(..)
| ty::PredicateKind::ConstEvaluatable(..)
| ty::PredicateKind::ConstEquate(..) => {
chalk_ir::GoalData::All(chalk_ir::Goals::empty(interner))
@ -592,6 +594,7 @@ impl<'tcx> LowerInto<'tcx, Option<chalk_ir::QuantifiedWhereClause<RustInterner<'
ty::PredicateKind::ObjectSafe(..)
| ty::PredicateKind::ClosureKind(..)
| ty::PredicateKind::Subtype(..)
| ty::PredicateKind::Coerce(..)
| ty::PredicateKind::ConstEvaluatable(..)
| ty::PredicateKind::ConstEquate(..)
| ty::PredicateKind::TypeWellFormedFromEnv(..) => {
@ -719,6 +722,7 @@ impl<'tcx> LowerInto<'tcx, Option<chalk_solve::rust_ir::QuantifiedInlineBound<Ru
| ty::PredicateKind::ObjectSafe(..)
| ty::PredicateKind::ClosureKind(..)
| ty::PredicateKind::Subtype(..)
| ty::PredicateKind::Coerce(..)
| ty::PredicateKind::ConstEvaluatable(..)
| ty::PredicateKind::ConstEquate(..)
| ty::PredicateKind::TypeWellFormedFromEnv(..) => {

1
compiler/rustc_traits/src/implied_outlives_bounds.rs
View file

@ -99,6 +99,7 @@ fn compute_implied_outlives_bounds<'tcx>(
Some(pred) => match pred {
ty::PredicateKind::Trait(..)
| ty::PredicateKind::Subtype(..)
| ty::PredicateKind::Coerce(..)
| ty::PredicateKind::Projection(..)
| ty::PredicateKind::ClosureKind(..)
| ty::PredicateKind::ObjectSafe(..)

1
compiler/rustc_traits/src/normalize_erasing_regions.rs
View file

@ -65,6 +65,7 @@ fn not_outlives_predicate(p: &ty::Predicate<'tcx>) -> bool {
| ty::PredicateKind::ObjectSafe(..)
| ty::PredicateKind::ClosureKind(..)
| ty::PredicateKind::Subtype(..)
| ty::PredicateKind::Coerce(..)
| ty::PredicateKind::ConstEvaluatable(..)
| ty::PredicateKind::ConstEquate(..)
| ty::PredicateKind::TypeWellFormedFromEnv(..) => true,