bjoernager/rust
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Auto merge of #97447 - nnethercote:improve-folding, r=jackh726

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Folding revamp

r? `@ghost`
This commit is contained in:
bors 2022-06-08 05:36:40 +00:00
commit 64a7aa7016
47 changed files with 321 additions and 366 deletions
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2
compiler/rustc_infer/src/infer/canonical/canonicalizer.rs
View file

@ -11,7 +11,7 @@ use crate::infer::canonical::{
};
use crate::infer::InferCtxt;
use rustc_middle::ty::flags::FlagComputation;
use rustc_middle::ty::fold::{TypeFoldable, TypeFolder};
use rustc_middle::ty::fold::{TypeFoldable, TypeFolder, TypeSuperFoldable};
use rustc_middle::ty::subst::GenericArg;
use rustc_middle::ty::{self, BoundVar, InferConst, List, Ty, TyCtxt, TypeFlags};
use std::sync::atomic::Ordering;

2
compiler/rustc_infer/src/infer/error_reporting/mod.rs
View file

@ -70,7 +70,7 @@ use rustc_middle::ty::{
self,
error::TypeError,
subst::{GenericArgKind, Subst, SubstsRef},
Binder, EarlyBinder, List, Region, Ty, TyCtxt, TypeFoldable,
Binder, EarlyBinder, List, Region, Ty, TyCtxt, TypeFoldable, TypeSuperFoldable,
};
use rustc_span::{sym, symbol::kw, BytePos, DesugaringKind, Pos, Span};
use rustc_target::spec::abi;

2
compiler/rustc_infer/src/infer/error_reporting/nice_region_error/static_impl_trait.rs
View file

@ -10,7 +10,7 @@ use rustc_hir::def_id::DefId;
use rustc_hir::intravisit::{walk_ty, Visitor};
use rustc_hir::{self as hir, GenericBound, Item, ItemKind, Lifetime, LifetimeName, Node, TyKind};
use rustc_middle::ty::{
self, AssocItemContainer, StaticLifetimeVisitor, Ty, TyCtxt, TypeFoldable, TypeVisitor,
self, AssocItemContainer, StaticLifetimeVisitor, Ty, TyCtxt, TypeSuperFoldable, TypeVisitor,
};
use rustc_span::symbol::Ident;
use rustc_span::Span;

2
compiler/rustc_infer/src/infer/error_reporting/nice_region_error/trait_impl_difference.rs
View file

@ -11,7 +11,7 @@ use rustc_hir::def_id::{DefId, LocalDefId};
use rustc_hir::intravisit::Visitor;
use rustc_middle::hir::nested_filter;
use rustc_middle::ty::print::RegionHighlightMode;
use rustc_middle::ty::{self, Ty, TyCtxt, TypeFoldable, TypeVisitor};
use rustc_middle::ty::{self, Ty, TyCtxt, TypeSuperFoldable, TypeVisitor};
use rustc_span::{Span, Symbol};
use std::ops::ControlFlow;

15
compiler/rustc_infer/src/infer/freshen.rs
View file

@ -34,7 +34,7 @@ use super::InferCtxt;
use rustc_data_structures::fx::FxHashMap;
use rustc_middle::infer::unify_key::ToType;
use rustc_middle::ty::fold::TypeFolder;
use rustc_middle::ty::{self, Ty, TyCtxt, TypeFoldable};
use rustc_middle::ty::{self, Ty, TyCtxt, TypeFoldable, TypeSuperFoldable};
use std::collections::hash_map::Entry;
pub struct TypeFreshener<'a, 'tcx> {
@ -228,12 +228,7 @@ impl<'a, 'tcx> TypeFolder<'tcx> for TypeFreshener<'a, 'tcx> {
.probe_value(v)
.val
.known();
return self.freshen_const(
opt_ct,
ty::InferConst::Var(v),
ty::InferConst::Fresh,
ct.ty(),
);
self.freshen_const(opt_ct, ty::InferConst::Var(v), ty::InferConst::Fresh, ct.ty())
}
ty::ConstKind::Infer(ty::InferConst::Fresh(i)) => {
if i >= self.const_freshen_count {
@ -244,7 +239,7 @@ impl<'a, 'tcx> TypeFolder<'tcx> for TypeFreshener<'a, 'tcx> {
self.const_freshen_count,
);
}
return ct;
ct
}
ty::ConstKind::Bound(..) | ty::ConstKind::Placeholder(_) => {
@ -254,9 +249,7 @@ impl<'a, 'tcx> TypeFolder<'tcx> for TypeFreshener<'a, 'tcx> {
ty::ConstKind::Param(_)
| ty::ConstKind::Value(_)
| ty::ConstKind::Unevaluated(..)
| ty::ConstKind::Error(_) => {}
| ty::ConstKind::Error(_) => ct.super_fold_with(self),
}
ct.super_fold_with(self)
}
}

2
compiler/rustc_infer/src/infer/fudge.rs
View file

@ -1,4 +1,4 @@
use rustc_middle::ty::fold::{TypeFoldable, TypeFolder};
use rustc_middle::ty::fold::{TypeFoldable, TypeFolder, TypeSuperFoldable};
use rustc_middle::ty::{self, ConstVid, FloatVid, IntVid, RegionVid, Ty, TyCtxt, TyVid};
use super::type_variable::TypeVariableOrigin;

2
compiler/rustc_infer/src/infer/mod.rs
View file

@ -23,7 +23,7 @@ use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKin
use rustc_middle::mir::interpret::{ErrorHandled, EvalToConstValueResult};
use rustc_middle::traits::select;
use rustc_middle::ty::error::{ExpectedFound, TypeError};
use rustc_middle::ty::fold::{TypeFoldable, TypeFolder};
use rustc_middle::ty::fold::{TypeFoldable, TypeFolder, TypeSuperFoldable};
use rustc_middle::ty::relate::RelateResult;
use rustc_middle::ty::subst::{GenericArg, GenericArgKind, InternalSubsts, SubstsRef};
pub use rustc_middle::ty::IntVarValue;

2
compiler/rustc_infer/src/infer/nll_relate/mod.rs
View file

@ -27,7 +27,7 @@ use crate::infer::{ConstVarValue, ConstVariableValue};
use crate::infer::{TypeVariableOrigin, TypeVariableOriginKind};
use rustc_data_structures::fx::FxHashMap;
use rustc_middle::ty::error::TypeError;
use rustc_middle::ty::fold::{TypeFoldable, TypeVisitor};
use rustc_middle::ty::fold::{TypeFoldable, TypeSuperFoldable, TypeVisitor};
use rustc_middle::ty::relate::{self, Relate, RelateResult, TypeRelation};
use rustc_middle::ty::{self, InferConst, Ty, TyCtxt};
use rustc_span::Span;

4
compiler/rustc_infer/src/infer/opaque_types.rs
View file

@ -9,7 +9,7 @@ use rustc_middle::traits::ObligationCause;
use rustc_middle::ty::fold::BottomUpFolder;
use rustc_middle::ty::subst::{GenericArgKind, Subst};
use rustc_middle::ty::{
self, OpaqueHiddenType, OpaqueTypeKey, Ty, TyCtxt, TypeFoldable, TypeVisitor,
self, OpaqueHiddenType, OpaqueTypeKey, Ty, TyCtxt, TypeFoldable, TypeSuperFoldable, TypeVisitor,
};
use rustc_span::Span;
@ -470,7 +470,7 @@ where
&mut self,
t: &ty::Binder<'tcx, T>,
) -> ControlFlow<Self::BreakTy> {
t.as_ref().skip_binder().visit_with(self);
t.super_visit_with(self);
ControlFlow::CONTINUE
}

2
compiler/rustc_infer/src/infer/resolve.rs
View file

@ -1,7 +1,7 @@
use super::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
use super::{FixupError, FixupResult, InferCtxt, Span};
use rustc_middle::mir;
use rustc_middle::ty::fold::{FallibleTypeFolder, TypeFolder, TypeVisitor};
use rustc_middle::ty::fold::{FallibleTypeFolder, TypeFolder, TypeSuperFoldable, TypeVisitor};
use rustc_middle::ty::{self, Const, InferConst, Ty, TyCtxt, TypeFoldable};
use std::ops::ControlFlow;

7
compiler/rustc_infer/src/traits/structural_impls.rs
View file

@ -60,10 +60,7 @@ impl<'tcx> fmt::Debug for traits::MismatchedProjectionTypes<'tcx> {
// TypeFoldable implementations.
impl<'tcx, O: TypeFoldable<'tcx>> TypeFoldable<'tcx> for traits::Obligation<'tcx, O> {
fn try_super_fold_with<F: FallibleTypeFolder<'tcx>>(
self,
folder: &mut F,
) -> Result<Self, F::Error> {
fn try_fold_with<F: FallibleTypeFolder<'tcx>>(self, folder: &mut F) -> Result<Self, F::Error> {
Ok(traits::Obligation {
cause: self.cause,
recursion_depth: self.recursion_depth,
@ -72,7 +69,7 @@ impl<'tcx, O: TypeFoldable<'tcx>> TypeFoldable<'tcx> for traits::Obligation<'tcx
})
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.predicate.visit_with(visitor)?;
self.param_env.visit_with(visitor)
}