bjoernager/rust
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implement and use NormalizesTo

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This commit is contained in:
lcnr 2023-12-07 18:20:27 +01:00
parent 3978f545ba
commit ffb4c08a81
21 changed files with 135 additions and 125 deletions
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8
compiler/rustc_trait_selection/src/solve/assembly/mod.rs
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@ -352,15 +352,13 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
num_steps: usize,
) {
let tcx = self.tcx();
let &ty::Alias(_, projection_ty) = goal.predicate.self_ty().kind() else { return };
let &ty::Alias(_, alias) = goal.predicate.self_ty().kind() else { return };
candidates.extend(self.probe(|_| ProbeKind::NormalizedSelfTyAssembly).enter(|ecx| {
if tcx.recursion_limit().value_within_limit(num_steps) {
let normalized_ty = ecx.next_ty_infer();
let normalizes_to_goal = goal.with(
tcx,
ty::ProjectionPredicate { projection_ty, term: normalized_ty.into() },
);
let normalizes_to_goal =
goal.with(tcx, ty::NormalizesTo { alias, term: normalized_ty.into() });
ecx.add_goal(normalizes_to_goal);
if let Err(NoSolution) = ecx.try_evaluate_added_goals() {
debug!("self type normalization failed");