From 7d2083c58ea9208c456b0bef177d87665e8c8a4f Mon Sep 17 00:00:00 2001 From: lcnr Date: Thu, 7 Apr 2022 11:16:37 +0200 Subject: [PATCH 1/2] small mir typeck cleanup --- compiler/rustc_borrowck/src/type_check/canonical.rs | 7 ++++--- .../rustc_borrowck/src/type_check/free_region_relations.rs | 2 +- compiler/rustc_borrowck/src/type_check/mod.rs | 2 +- 3 files changed, 6 insertions(+), 5 deletions(-) diff --git a/compiler/rustc_borrowck/src/type_check/canonical.rs b/compiler/rustc_borrowck/src/type_check/canonical.rs index 6cfe5efb68886..451b82c5c1870 100644 --- a/compiler/rustc_borrowck/src/type_check/canonical.rs +++ b/compiler/rustc_borrowck/src/type_check/canonical.rs @@ -90,12 +90,13 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { locations: Locations, category: ConstraintCategory<'tcx>, ) { - self.prove_predicates( - Some(ty::Binder::dummy(ty::PredicateKind::Trait(ty::TraitPredicate { + self.prove_predicate( + ty::Binder::dummy(ty::PredicateKind::Trait(ty::TraitPredicate { trait_ref, constness: ty::BoundConstness::NotConst, polarity: ty::ImplPolarity::Positive, - }))), + })) + .to_predicate(self.tcx()), locations, category, ); diff --git a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs index 74655369faf03..bb28622edf931 100644 --- a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs +++ b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs @@ -268,7 +268,7 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { // } // impl Foo for () { // type Bar = (); - // fn foo(&self) ->&() {} + // fn foo(&self) -> &() {} // } // ``` // Both &Self::Bar and &() are WF diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs index 7bf7f7357bf4f..bb2e773189c03 100644 --- a/compiler/rustc_borrowck/src/type_check/mod.rs +++ b/compiler/rustc_borrowck/src/type_check/mod.rs @@ -1911,7 +1911,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { } } - &Rvalue::NullaryOp(_, ty) => { + &Rvalue::NullaryOp(NullOp::SizeOf | NullOp::AlignOf, ty) => { let trait_ref = ty::TraitRef { def_id: tcx.require_lang_item(LangItem::Sized, Some(self.last_span)), substs: tcx.mk_substs_trait(ty, &[]), From 56b5ec83f2ade19fc601ad44a7366d3e5215401a Mon Sep 17 00:00:00 2001 From: lcnr Date: Thu, 7 Apr 2022 11:28:31 +0200 Subject: [PATCH 2/2] move `type_check_internal` into `type_check` --- compiler/rustc_borrowck/src/type_check/mod.rs | 137 +++++++----------- 1 file changed, 52 insertions(+), 85 deletions(-) diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs index bb2e773189c03..293d847ec9ab7 100644 --- a/compiler/rustc_borrowck/src/type_check/mod.rs +++ b/compiler/rustc_borrowck/src/type_check/mod.rs @@ -178,97 +178,15 @@ pub(crate) fn type_check<'mir, 'tcx>( upvars, }; - let opaque_type_values = type_check_internal( + let mut checker = TypeChecker::new( infcx, - param_env, body, - promoted, + param_env, ®ion_bound_pairs, implicit_region_bound, &mut borrowck_context, - |mut cx| { - debug!("inside extra closure of type_check_internal"); - cx.equate_inputs_and_outputs(&body, universal_regions, &normalized_inputs_and_output); - liveness::generate( - &mut cx, - body, - elements, - flow_inits, - move_data, - location_table, - use_polonius, - ); - - translate_outlives_facts(&mut cx); - let opaque_type_values = - infcx.inner.borrow_mut().opaque_type_storage.take_opaque_types(); - - opaque_type_values - .into_iter() - .map(|(opaque_type_key, decl)| { - cx.fully_perform_op( - Locations::All(body.span), - ConstraintCategory::OpaqueType, - CustomTypeOp::new( - |infcx| { - infcx.register_member_constraints( - param_env, - opaque_type_key, - decl.hidden_type.ty, - decl.hidden_type.span, - ); - Ok(InferOk { value: (), obligations: vec![] }) - }, - || "opaque_type_map".to_string(), - ), - ) - .unwrap(); - let mut hidden_type = infcx.resolve_vars_if_possible(decl.hidden_type); - trace!( - "finalized opaque type {:?} to {:#?}", - opaque_type_key, - hidden_type.ty.kind() - ); - if hidden_type.has_infer_types_or_consts() { - infcx.tcx.sess.delay_span_bug( - decl.hidden_type.span, - &format!("could not resolve {:#?}", hidden_type.ty.kind()), - ); - hidden_type.ty = infcx.tcx.ty_error(); - } - - (opaque_type_key, (hidden_type, decl.origin)) - }) - .collect() - }, ); - MirTypeckResults { constraints, universal_region_relations, opaque_type_values } -} - -#[instrument( - skip(infcx, body, promoted, region_bound_pairs, borrowck_context, extra), - level = "debug" -)] -fn type_check_internal<'a, 'tcx, R>( - infcx: &'a InferCtxt<'a, 'tcx>, - param_env: ty::ParamEnv<'tcx>, - body: &'a Body<'tcx>, - promoted: &'a IndexVec>, - region_bound_pairs: &'a RegionBoundPairs<'tcx>, - implicit_region_bound: ty::Region<'tcx>, - borrowck_context: &'a mut BorrowCheckContext<'a, 'tcx>, - extra: impl FnOnce(TypeChecker<'a, 'tcx>) -> R, -) -> R { - debug!("body: {:#?}", body); - let mut checker = TypeChecker::new( - infcx, - body, - param_env, - region_bound_pairs, - implicit_region_bound, - borrowck_context, - ); let errors_reported = { let mut verifier = TypeVerifier::new(&mut checker, promoted); verifier.visit_body(&body); @@ -280,7 +198,56 @@ fn type_check_internal<'a, 'tcx, R>( checker.typeck_mir(body); } - extra(checker) + checker.equate_inputs_and_outputs(&body, universal_regions, &normalized_inputs_and_output); + liveness::generate( + &mut checker, + body, + elements, + flow_inits, + move_data, + location_table, + use_polonius, + ); + + translate_outlives_facts(&mut checker); + let opaque_type_values = infcx.inner.borrow_mut().opaque_type_storage.take_opaque_types(); + + let opaque_type_values = opaque_type_values + .into_iter() + .map(|(opaque_type_key, decl)| { + checker + .fully_perform_op( + Locations::All(body.span), + ConstraintCategory::OpaqueType, + CustomTypeOp::new( + |infcx| { + infcx.register_member_constraints( + param_env, + opaque_type_key, + decl.hidden_type.ty, + decl.hidden_type.span, + ); + Ok(InferOk { value: (), obligations: vec![] }) + }, + || "opaque_type_map".to_string(), + ), + ) + .unwrap(); + let mut hidden_type = infcx.resolve_vars_if_possible(decl.hidden_type); + trace!("finalized opaque type {:?} to {:#?}", opaque_type_key, hidden_type.ty.kind()); + if hidden_type.has_infer_types_or_consts() { + infcx.tcx.sess.delay_span_bug( + decl.hidden_type.span, + &format!("could not resolve {:#?}", hidden_type.ty.kind()), + ); + hidden_type.ty = infcx.tcx.ty_error(); + } + + (opaque_type_key, (hidden_type, decl.origin)) + }) + .collect(); + + MirTypeckResults { constraints, universal_region_relations, opaque_type_values } } fn translate_outlives_facts(typeck: &mut TypeChecker<'_, '_>) {