Uplift canonicalizer into new trait solver crate

compiler/rustc_middle/src/ty/consts.rs

@@ -7,7 +7,7 @@ use rustc_hir as hir;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::LocalDefId;
 use rustc_macros::HashStable;
-use rustc_type_ir::{TypeFlags, WithCachedTypeInfo};
+use rustc_type_ir::{ConstTy, IntoKind, TypeFlags, WithCachedTypeInfo};
 
 mod int;
 mod kind;
@@ -26,6 +26,20 @@ use super::sty::ConstKind;
 #[rustc_pass_by_value]
 pub struct Const<'tcx>(pub(super) Interned<'tcx, WithCachedTypeInfo<ConstData<'tcx>>>);
 
+impl<'tcx> IntoKind for Const<'tcx> {
+    type Kind = ConstKind<'tcx>;
+
+    fn kind(&self) -> ConstKind<'tcx> {
+        (*self).kind().clone()
+    }
+}
+
+impl<'tcx> ConstTy<TyCtxt<'tcx>> for Const<'tcx> {
+    fn ty(&self) -> Ty<'tcx> {
+        (*self).ty()
+    }
+}
+
 /// Typed constant value.
 #[derive(PartialEq, Eq, PartialOrd, Ord, Hash, HashStable, TyEncodable, TyDecodable)]
 pub struct ConstData<'tcx> {

compiler/rustc_middle/src/ty/context.rs

@@ -131,6 +131,42 @@ impl<'tcx> Interner for TyCtxt<'tcx> {
     ) -> (Self::Ty, ty::Mutability) {
         (ty, mutbl)
     }
+
+    fn mk_canonical_var_infos(
+        &self,
+        infos: &[rustc_type_ir::CanonicalVarInfo<Self>],
+    ) -> Self::CanonicalVars {
+        (*self).mk_canonical_var_infos(infos)
+    }
+
+    fn mk_bound_ty(
+        &self,
+        debruijn: rustc_type_ir::DebruijnIndex,
+        var: rustc_type_ir::BoundVar,
+    ) -> Self::Ty {
+        Ty::new_bound(*self, debruijn, ty::BoundTy { var, kind: ty::BoundTyKind::Anon })
+    }
+
+    fn mk_bound_region(
+        &self,
+        debruijn: rustc_type_ir::DebruijnIndex,
+        var: rustc_type_ir::BoundVar,
+    ) -> Self::Region {
+        Region::new_bound(
+            *self,
+            debruijn,
+            ty::BoundRegion { var, kind: ty::BoundRegionKind::BrAnon },
+        )
+    }
+
+    fn mk_bound_const(
+        &self,
+        debruijn: rustc_type_ir::DebruijnIndex,
+        var: rustc_type_ir::BoundVar,
+        ty: Self::Ty,
+    ) -> Self::Const {
+        Const::new_bound(*self, debruijn, var, ty)
+    }
 }
 
 type InternedSet<'tcx, T> = ShardedHashMap<InternedInSet<'tcx, T>, ()>;

compiler/rustc_middle/src/ty/mod.rs

@@ -474,6 +474,14 @@ pub struct CReaderCacheKey {
 #[rustc_pass_by_value]
 pub struct Ty<'tcx>(Interned<'tcx, WithCachedTypeInfo<TyKind<'tcx>>>);
 
+impl<'tcx> IntoKind for Ty<'tcx> {
+    type Kind = TyKind<'tcx>;
+
+    fn kind(&self) -> TyKind<'tcx> {
+        (*self).kind().clone()
+    }
+}
+
 impl EarlyParamRegion {
     /// Does this early bound region have a name? Early bound regions normally
     /// always have names except when using anonymous lifetimes (`'_`).
@@ -1554,8 +1562,12 @@ impl rustc_type_ir::Placeholder for PlaceholderRegion {
         self.bound.var
     }
 
-    fn with_updated_universe(self, ui: UniverseIndex) -> Self {
-        Placeholder { universe: ui, ..self }
+    fn with_updated_universe(&self, ui: UniverseIndex) -> Self {
+        Placeholder { universe: ui, ..*self }
+    }
+
+    fn new(ui: UniverseIndex, var: BoundVar) -> Self {
+        Placeholder { universe: ui, bound: BoundRegion { var, kind: BoundRegionKind::BrAnon } }
     }
 }
 
@@ -1570,8 +1582,12 @@ impl rustc_type_ir::Placeholder for PlaceholderType {
         self.bound.var
     }
 
-    fn with_updated_universe(self, ui: UniverseIndex) -> Self {
-        Placeholder { universe: ui, ..self }
+    fn with_updated_universe(&self, ui: UniverseIndex) -> Self {
+        Placeholder { universe: ui, ..*self }
+    }
+
+    fn new(ui: UniverseIndex, var: BoundVar) -> Self {
+        Placeholder { universe: ui, bound: BoundTy { var, kind: BoundTyKind::Anon } }
     }
 }
 
@@ -1593,8 +1609,12 @@ impl rustc_type_ir::Placeholder for PlaceholderConst {
         self.bound
     }
 
-    fn with_updated_universe(self, ui: UniverseIndex) -> Self {
-        Placeholder { universe: ui, ..self }
+    fn with_updated_universe(&self, ui: UniverseIndex) -> Self {
+        Placeholder { universe: ui, ..*self }
+    }
+
+    fn new(ui: UniverseIndex, var: BoundVar) -> Self {
+        Placeholder { universe: ui, bound: var }
     }
 }
 

compiler/rustc_middle/src/ty/sty.rs

@@ -6,7 +6,7 @@ use crate::infer::canonical::Canonical;
 use crate::ty::visit::ValidateBoundVars;
 use crate::ty::InferTy::*;
 use crate::ty::{
-    self, AdtDef, Discr, Term, Ty, TyCtxt, TypeFlags, TypeSuperVisitable, TypeVisitable,
+    self, AdtDef, Discr, IntoKind, Term, Ty, TyCtxt, TypeFlags, TypeSuperVisitable, TypeVisitable,
     TypeVisitableExt, TypeVisitor,
 };
 use crate::ty::{GenericArg, GenericArgs, GenericArgsRef};
@@ -1477,6 +1477,14 @@ impl ParamConst {
 #[rustc_pass_by_value]
 pub struct Region<'tcx>(pub Interned<'tcx, RegionKind<'tcx>>);
 
+impl<'tcx> IntoKind for Region<'tcx> {
+    type Kind = RegionKind<'tcx>;
+
+    fn kind(&self) -> RegionKind<'tcx> {
+        **self
+    }
+}
+
 impl<'tcx> Region<'tcx> {
     #[inline]
     pub fn new_early_param(