Auto merge of #107869 - nnethercote:reduce-interning, r=compiler-errors

Reduce interning

r? `@compiler-errors`

compiler/rustc_codegen_ssa/src/mir/debuginfo.rs

@@ -385,10 +385,9 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                     calculate_debuginfo_offset(bx, local, &var, base);
 
                 // Create a variable which will be a pointer to the actual value
-                let ptr_ty = bx.tcx().mk_ty(ty::RawPtr(ty::TypeAndMut {
-                    mutbl: mir::Mutability::Mut,
-                    ty: place.layout.ty,
-                }));
+                let ptr_ty = bx
+                    .tcx()
+                    .mk_ptr(ty::TypeAndMut { mutbl: mir::Mutability::Mut, ty: place.layout.ty });
                 let ptr_layout = bx.layout_of(ptr_ty);
                 let alloca = PlaceRef::alloca(bx, ptr_layout);
                 bx.set_var_name(alloca.llval, &(var.name.to_string() + ".dbg.spill"));

compiler/rustc_const_eval/src/const_eval/valtrees.rs

@@ -193,7 +193,7 @@ fn get_info_on_unsized_field<'tcx>(
 
     // Have to adjust type for ty::Str
     let unsized_inner_ty = match unsized_inner_ty.kind() {
-        ty::Str => tcx.mk_ty(ty::Uint(ty::UintTy::U8)),
+        ty::Str => tcx.types.u8,
         _ => unsized_inner_ty,
     };
 
@@ -216,7 +216,7 @@ fn create_pointee_place<'tcx>(
 
         let (unsized_inner_ty, num_elems) = get_info_on_unsized_field(ty, valtree, tcx);
         let unsized_inner_ty = match unsized_inner_ty.kind() {
-            ty::Str => tcx.mk_ty(ty::Uint(ty::UintTy::U8)),
+            ty::Str => tcx.types.u8,
             _ => unsized_inner_ty,
         };
         let unsized_inner_ty_size =

compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs

@@ -217,10 +217,10 @@ impl Qualif for CustomEq {
 
     fn in_adt_inherently<'tcx>(
         cx: &ConstCx<'_, 'tcx>,
-        adt: AdtDef<'tcx>,
+        def: AdtDef<'tcx>,
         substs: SubstsRef<'tcx>,
     ) -> bool {
-        let ty = cx.tcx.mk_ty(ty::Adt(adt, substs));
+        let ty = cx.tcx.mk_adt(def, substs);
         !ty.is_structural_eq_shallow(cx.tcx)
     }
 }

compiler/rustc_hir_analysis/src/astconv/mod.rs

@@ -1250,7 +1250,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                 //
                 // Calling `skip_binder` is okay, because `add_bounds` expects the `param_ty`
                 // parameter to have a skipped binder.
-                let param_ty = tcx.mk_ty(ty::Alias(ty::Projection, projection_ty.skip_binder()));
+                let param_ty = tcx.mk_alias(ty::Projection, projection_ty.skip_binder());
                 self.add_bounds(param_ty, ast_bounds.iter(), bounds, candidate.bound_vars());
             }
         }
@@ -2930,7 +2930,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                     }
                 };
 
-                tcx.mk_ty(ty::Array(self.ast_ty_to_ty(ty), length))
+                tcx.mk_array_with_const_len(self.ast_ty_to_ty(ty), length)
             }
             hir::TyKind::Typeof(e) => {
                 let ty_erased = tcx.type_of(e.def_id);

compiler/rustc_hir_analysis/src/check/compare_impl_item.rs

@@ -1927,10 +1927,10 @@ pub(super) fn check_type_bounds<'tcx>(
             let kind = ty::BoundTyKind::Param(param.def_id, param.name);
             let bound_var = ty::BoundVariableKind::Ty(kind);
             bound_vars.push(bound_var);
-            tcx.mk_ty(ty::Bound(
+            tcx.mk_bound(
                 ty::INNERMOST,
                 ty::BoundTy { var: ty::BoundVar::from_usize(bound_vars.len() - 1), kind },
-            ))
+            )
             .into()
         }
         GenericParamDefKind::Lifetime => {

compiler/rustc_hir_analysis/src/check/wfcheck.rs

@@ -603,8 +603,7 @@ fn gather_gat_bounds<'tcx, T: TypeFoldable<'tcx>>(
                 // our example, the type was `Self`, which will also be
                 // `Self` in the GAT.
                 let ty_param = gat_generics.param_at(*ty_idx, tcx);
-                let ty_param = tcx
-                    .mk_ty(ty::Param(ty::ParamTy { index: ty_param.index, name: ty_param.name }));
+                let ty_param = tcx.mk_ty_param(ty_param.index, ty_param.name);
                 // Same for the region. In our example, 'a corresponds
                 // to the 'me parameter.
                 let region_param = gat_generics.param_at(*region_a_idx, tcx);

compiler/rustc_hir_typeck/src/check.rs

@@ -264,9 +264,7 @@ fn check_lang_start_fn<'tcx>(
         // for example `start`'s generic should be a type parameter
         let generics = tcx.generics_of(def_id);
         let fn_generic = generics.param_at(0, tcx);
-        let generic_tykind =
-            ty::Param(ty::ParamTy { index: fn_generic.index, name: fn_generic.name });
-        let generic_ty = tcx.mk_ty(generic_tykind);
+        let generic_ty = tcx.mk_ty_param(fn_generic.index, fn_generic.name);
         let expected_fn_sig =
             tcx.mk_fn_sig([].iter(), &generic_ty, false, hir::Unsafety::Normal, Abi::Rust);
         let expected_ty = tcx.mk_fn_ptr(Binder::dummy(expected_fn_sig));

compiler/rustc_hir_typeck/src/demand.rs

@@ -273,12 +273,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             ct_op: |c| c,
             ty_op: |t| match *t.kind() {
                 ty::Infer(ty::TyVar(_)) => self.tcx.mk_ty_var(ty::TyVid::from_u32(0)),
-                ty::Infer(ty::IntVar(_)) => {
-                    self.tcx.mk_ty_infer(ty::IntVar(ty::IntVid { index: 0 }))
-                }
-                ty::Infer(ty::FloatVar(_)) => {
-                    self.tcx.mk_ty_infer(ty::FloatVar(ty::FloatVid { index: 0 }))
-                }
+                ty::Infer(ty::IntVar(_)) => self.tcx.mk_int_var(ty::IntVid { index: 0 }),
+                ty::Infer(ty::FloatVar(_)) => self.tcx.mk_float_var(ty::FloatVid { index: 0 }),
                 _ => t,
             },
         };

compiler/rustc_hir_typeck/src/expr.rs

@@ -1429,7 +1429,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
 
         self.check_repeat_element_needs_copy_bound(element, count, element_ty);
 
-        tcx.mk_ty(ty::Array(t, count))
+        tcx.mk_array_with_const_len(t, count)
     }
 
     fn check_repeat_element_needs_copy_bound(

compiler/rustc_hir_typeck/src/pat.rs

@@ -1296,7 +1296,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             )
         });
         let element_tys = tcx.mk_type_list(element_tys_iter);
-        let pat_ty = tcx.mk_ty(ty::Tuple(element_tys));
+        let pat_ty = tcx.intern_tup(element_tys);
         if let Some(mut err) = self.demand_eqtype_pat_diag(span, expected, pat_ty, ti) {
             let reported = err.emit();
             // Walk subpatterns with an expected type of `err` in this case to silence

compiler/rustc_infer/src/infer/canonical/canonicalizer.rs

@@ -752,7 +752,7 @@ impl<'cx, 'tcx> Canonicalizer<'cx, 'tcx> {
             self.fold_ty(bound_to)
         } else {
             let var = self.canonical_var(info, ty_var.into());
-            self.tcx().mk_ty(ty::Bound(self.binder_index, var.into()))
+            self.tcx().mk_bound(self.binder_index, var.into())
         }
     }
 

compiler/rustc_infer/src/infer/canonical/mod.rs

@@ -124,7 +124,7 @@ impl<'tcx> InferCtxt<'tcx> {
             CanonicalVarKind::PlaceholderTy(ty::PlaceholderType { universe, name }) => {
                 let universe_mapped = universe_map(universe);
                 let placeholder_mapped = ty::PlaceholderType { universe: universe_mapped, name };
-                self.tcx.mk_ty(ty::Placeholder(placeholder_mapped)).into()
+                self.tcx.mk_placeholder(placeholder_mapped).into()
             }
 
             CanonicalVarKind::Region(ui) => self

compiler/rustc_infer/src/infer/freshen.rs

@@ -58,14 +58,9 @@ impl<'a, 'tcx> TypeFreshener<'a, 'tcx> {
         }
     }
 
-    fn freshen_ty<F>(
-        &mut self,
-        opt_ty: Option<Ty<'tcx>>,
-        key: ty::InferTy,
-        freshener: F,
-    ) -> Ty<'tcx>
+    fn freshen_ty<F>(&mut self, opt_ty: Option<Ty<'tcx>>, key: ty::InferTy, mk_fresh: F) -> Ty<'tcx>
     where
-        F: FnOnce(u32) -> ty::InferTy,
+        F: FnOnce(u32) -> Ty<'tcx>,
     {
         if let Some(ty) = opt_ty {
             return ty.fold_with(self);
@@ -76,7 +71,7 @@ impl<'a, 'tcx> TypeFreshener<'a, 'tcx> {
             Entry::Vacant(entry) => {
                 let index = self.ty_freshen_count;
                 self.ty_freshen_count += 1;
-                let t = self.infcx.tcx.mk_ty_infer(freshener(index));
+                let t = mk_fresh(index);
                 entry.insert(t);
                 t
             }
@@ -204,7 +199,7 @@ impl<'a, 'tcx> TypeFreshener<'a, 'tcx> {
         match v {
             ty::TyVar(v) => {
                 let opt_ty = self.infcx.inner.borrow_mut().type_variables().probe(v).known();
-                Some(self.freshen_ty(opt_ty, ty::TyVar(v), ty::FreshTy))
+                Some(self.freshen_ty(opt_ty, ty::TyVar(v), |n| self.infcx.tcx.mk_fresh_ty(n)))
             }
 
             ty::IntVar(v) => Some(
@@ -216,7 +211,7 @@ impl<'a, 'tcx> TypeFreshener<'a, 'tcx> {
                         .probe_value(v)
                         .map(|v| v.to_type(self.infcx.tcx)),
                     ty::IntVar(v),
-                    ty::FreshIntTy,
+                    |n| self.infcx.tcx.mk_fresh_int_ty(n),
                 ),
             ),
 
@@ -229,7 +224,7 @@ impl<'a, 'tcx> TypeFreshener<'a, 'tcx> {
                         .probe_value(v)
                         .map(|v| v.to_type(self.infcx.tcx)),
                     ty::FloatVar(v),
-                    ty::FreshFloatTy,
+                    |n| self.infcx.tcx.mk_fresh_float_ty(n),
                 ),
             ),
 

compiler/rustc_infer/src/infer/higher_ranked/mod.rs

@@ -88,10 +88,10 @@ impl<'tcx> InferCtxt<'tcx> {
                 }))
             },
             types: &mut |bound_ty: ty::BoundTy| {
-                self.tcx.mk_ty(ty::Placeholder(ty::PlaceholderType {
+                self.tcx.mk_placeholder(ty::PlaceholderType {
                     universe: next_universe,
                     name: bound_ty.kind,
-                }))
+                })
             },
             consts: &mut |bound_var: ty::BoundVar, ty| {
                 self.tcx

compiler/rustc_infer/src/infer/mod.rs

@@ -2071,14 +2071,14 @@ fn replace_param_and_infer_substs_with_placeholder<'tcx>(
 
         fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> {
             if let ty::Infer(_) = t.kind() {
-                self.tcx.mk_ty(ty::Placeholder(ty::PlaceholderType {
+                self.tcx.mk_placeholder(ty::PlaceholderType {
                     universe: ty::UniverseIndex::ROOT,
                     name: ty::BoundTyKind::Anon({
                         let idx = self.idx;
                         self.idx += 1;
                         idx
                     }),
-                }))
+                })
             } else {
                 t.super_fold_with(self)
             }

compiler/rustc_middle/src/infer/canonical.rs

@@ -345,9 +345,9 @@ impl<'tcx> CanonicalVarValues<'tcx> {
             var_values: tcx.mk_substs(infos.iter().enumerate().map(
                 |(i, info)| -> ty::GenericArg<'tcx> {
                     match info.kind {
-                        CanonicalVarKind::Ty(_) | CanonicalVarKind::PlaceholderTy(_) => tcx
-                            .mk_ty(ty::Bound(ty::INNERMOST, ty::BoundVar::from_usize(i).into()))
-                            .into(),
+                        CanonicalVarKind::Ty(_) | CanonicalVarKind::PlaceholderTy(_) => {
+                            tcx.mk_bound(ty::INNERMOST, ty::BoundVar::from_usize(i).into()).into()
+                        }
                         CanonicalVarKind::Region(_) | CanonicalVarKind::PlaceholderRegion(_) => {
                             let br = ty::BoundRegion {
                                 var: ty::BoundVar::from_usize(i),

compiler/rustc_middle/src/mir/tcx.rs

@@ -162,7 +162,7 @@ impl<'tcx> Rvalue<'tcx> {
         match *self {
             Rvalue::Use(ref operand) => operand.ty(local_decls, tcx),
             Rvalue::Repeat(ref operand, count) => {
-                tcx.mk_ty(ty::Array(operand.ty(local_decls, tcx), count))
+                tcx.mk_array_with_const_len(operand.ty(local_decls, tcx), count)
             }
             Rvalue::ThreadLocalRef(did) => {
                 let static_ty = tcx.type_of(did);