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Replacing bound vars is actually instantiating a binder

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This commit is contained in:
Michael Goulet
2023-02-07 23:13:22 +00:00
parent bd39bbb4bb
commit 03a8a4ff3e
28 changed files with 67 additions and 60 deletions
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6
compiler/rustc_trait_selection/src/solve/fulfill.rs
View File

@@ -74,7 +74,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
)
}
ty::PredicateKind::Subtype(pred) => {
let (a, b) = infcx.replace_bound_vars_with_placeholders(
let (a, b) = infcx.instantiate_binder_with_placeholders(
goal.predicate.kind().rebind((pred.a, pred.b)),
);
let expected_found = ExpectedFound::new(true, a, b);
@@ -84,7 +84,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
)
}
ty::PredicateKind::Coerce(pred) => {
let (a, b) = infcx.replace_bound_vars_with_placeholders(
let (a, b) = infcx.instantiate_binder_with_placeholders(
goal.predicate.kind().rebind((pred.a, pred.b)),
);
let expected_found = ExpectedFound::new(false, a, b);
@@ -94,7 +94,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
)
}
ty::PredicateKind::ConstEquate(a, b) => {
let (a, b) = infcx.replace_bound_vars_with_placeholders(
let (a, b) = infcx.instantiate_binder_with_placeholders(
goal.predicate.kind().rebind((a, b)),
);
let expected_found = ExpectedFound::new(true, a, b);

6
compiler/rustc_trait_selection/src/solve/infcx_ext.rs
View File

@@ -26,7 +26,7 @@ pub(super) trait InferCtxtExt<'tcx> {
rhs: T,
) -> Result<Vec<Goal<'tcx, ty::Predicate<'tcx>>>, NoSolution>;
fn instantiate_bound_vars_with_infer<T: TypeFoldable<'tcx> + Copy>(
fn instantiate_binder_with_infer<T: TypeFoldable<'tcx> + Copy>(
&self,
value: ty::Binder<'tcx, T>,
) -> T;
@@ -65,11 +65,11 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> {
})
}
fn instantiate_bound_vars_with_infer<T: TypeFoldable<'tcx> + Copy>(
fn instantiate_binder_with_infer<T: TypeFoldable<'tcx> + Copy>(
&self,
value: ty::Binder<'tcx, T>,
) -> T {
self.replace_bound_vars_with_fresh_vars(
self.instantiate_binder_with_fresh_vars(
DUMMY_SP,
LateBoundRegionConversionTime::HigherRankedType,
value,

2
compiler/rustc_trait_selection/src/solve/mod.rs
View File

@@ -304,7 +304,7 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> {
}
}
} else {
let kind = self.infcx.replace_bound_vars_with_placeholders(kind);
let kind = self.infcx.instantiate_binder_with_placeholders(kind);
let goal = goal.with(self.tcx(), ty::Binder::dummy(kind));
let (_, certainty) = self.evaluate_goal(goal)?;
self.make_canonical_response(certainty)

2
compiler/rustc_trait_selection/src/solve/project_goals.rs
View File

@@ -323,7 +323,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for ProjectionPredicate<'tcx> {
{
ecx.infcx.probe(|_| {
let assumption_projection_pred =
ecx.infcx.instantiate_bound_vars_with_infer(poly_projection_pred);
ecx.infcx.instantiate_binder_with_infer(poly_projection_pred);
let nested_goals = ecx.infcx.eq(
goal.param_env,
goal.predicate.projection_ty,

2
compiler/rustc_trait_selection/src/solve/trait_goals.rs
View File

@@ -72,7 +72,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for TraitPredicate<'tcx> {
// FIXME: Constness and polarity
ecx.infcx.probe(|_| {
let assumption_trait_pred =
ecx.infcx.instantiate_bound_vars_with_infer(poly_trait_pred);
ecx.infcx.instantiate_binder_with_infer(poly_trait_pred);
let nested_goals = ecx.infcx.eq(
goal.param_env,
goal.predicate.trait_ref,

4
compiler/rustc_trait_selection/src/solve/trait_goals/structural_traits.rs
View File

@@ -54,7 +54,7 @@ pub(super) fn instantiate_constituent_tys_for_auto_trait<'tcx>(
}
ty::GeneratorWitness(types) => {
Ok(infcx.replace_bound_vars_with_placeholders(types).to_vec())
Ok(infcx.instantiate_binder_with_placeholders(types).to_vec())
}
ty::GeneratorWitnessMIR(..) => todo!(),
@@ -174,7 +174,7 @@ pub(super) fn instantiate_constituent_tys_for_copy_clone_trait<'tcx>(
}
ty::GeneratorWitness(types) => {
Ok(infcx.replace_bound_vars_with_placeholders(types).to_vec())
Ok(infcx.instantiate_binder_with_placeholders(types).to_vec())
}
ty::GeneratorWitnessMIR(..) => todo!(),