Remove Ty::is_region_ptr

compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -120,9 +120,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                     && !self.upvars.is_empty()
                 {
                     item_msg = access_place_desc;
-                    debug_assert!(
-                        self.body.local_decls[ty::CAPTURE_STRUCT_LOCAL].ty.is_region_ptr()
-                    );
+                    debug_assert!(self.body.local_decls[ty::CAPTURE_STRUCT_LOCAL].ty.is_ref());
                     debug_assert!(is_closure_or_generator(
                         Place::ty_from(
                             the_place_err.local,
@@ -470,11 +468,8 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
             {
                 let local_decl = &self.body.local_decls[local];
 
-                let (pointer_sigil, pointer_desc) = if local_decl.ty.is_region_ptr() {
-                    ("&", "reference")
-                } else {
-                    ("*const", "pointer")
-                };
+                let (pointer_sigil, pointer_desc) =
+                    if local_decl.ty.is_ref() { ("&", "reference") } else { ("*const", "pointer") };
 
                 match self.local_names[local] {
                     Some(name) if !local_decl.from_compiler_desugaring() => {
@@ -1258,7 +1253,7 @@ fn suggest_ampmut<'tcx>(
     (
         suggestability,
         highlight_span,
-        if local_decl.ty.is_region_ptr() {
+        if local_decl.ty.is_ref() {
             format!("&mut {}", ty_mut.ty)
         } else {
             format!("*mut {}", ty_mut.ty)

compiler/rustc_codegen_cranelift/src/vtable.rs

@@ -48,9 +48,7 @@ pub(crate) fn get_ptr_and_method_ref<'tcx>(
 ) -> (Pointer, Value) {
     let (ptr, vtable) = 'block: {
         if let Abi::Scalar(_) = arg.layout().abi {
-            'descend_newtypes: while !arg.layout().ty.is_unsafe_ptr()
-                && !arg.layout().ty.is_region_ptr()
-            {
+            'descend_newtypes: while !arg.layout().ty.is_unsafe_ptr() && !arg.layout().ty.is_ref() {
                 for i in 0..arg.layout().fields.count() {
                     let field = arg.value_field(fx, mir::Field::new(i));
                     if !field.layout().is_zst() {

compiler/rustc_codegen_ssa/src/mir/block.rs

@@ -917,7 +917,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                         //
                         // This is also relevant for `Pin<&mut Self>`, where we need to peel the `Pin`.
                         'descend_newtypes: while !op.layout.ty.is_unsafe_ptr()
-                            && !op.layout.ty.is_region_ptr()
+                            && !op.layout.ty.is_ref()
                         {
                             for i in 0..op.layout.fields.count() {
                                 let field = op.extract_field(bx, i);
@@ -959,7 +959,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                     Immediate(_) => {
                         // See comment above explaining why we peel these newtypes
                         'descend_newtypes: while !op.layout.ty.is_unsafe_ptr()
-                            && !op.layout.ty.is_region_ptr()
+                            && !op.layout.ty.is_ref()
                         {
                             for i in 0..op.layout.fields.count() {
                                 let field = op.extract_field(bx, i);

compiler/rustc_hir_typeck/src/demand.rs

@@ -1487,7 +1487,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                     {
                         let deref_kind = if checked_ty.is_box() {
                             "unboxing the value"
-                        } else if checked_ty.is_region_ptr() {
+                        } else if checked_ty.is_ref() {
                             "dereferencing the borrow"
                         } else {
                             "dereferencing the type"

compiler/rustc_hir_typeck/src/method/suggest.rs

@@ -1182,7 +1182,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                                 .inputs()
                                 .skip_binder()
                                 .get(0)
-                                .filter(|ty| ty.is_region_ptr() && !rcvr_ty.is_region_ptr())
+                                .filter(|ty| ty.is_ref() && !rcvr_ty.is_ref())
                                 .copied()
                                 .unwrap_or(rcvr_ty),
                         };

compiler/rustc_middle/src/ty/sty.rs

@@ -1913,11 +1913,6 @@ impl<'tcx> Ty<'tcx> {
         }
     }
 
-    #[inline]
-    pub fn is_region_ptr(self) -> bool {
-        matches!(self.kind(), Ref(..))
-    }
-
     #[inline]
     pub fn is_mutable_ptr(self) -> bool {
         matches!(
@@ -1944,7 +1939,7 @@ impl<'tcx> Ty<'tcx> {
     /// Tests if this is any kind of primitive pointer type (reference, raw pointer, fn pointer).
     #[inline]
     pub fn is_any_ptr(self) -> bool {
-        self.is_region_ptr() || self.is_unsafe_ptr() || self.is_fn_ptr()
+        self.is_ref() || self.is_unsafe_ptr() || self.is_fn_ptr()
     }
 
     #[inline]

compiler/rustc_mir_build/src/thir/cx/expr.rs

@@ -185,7 +185,7 @@ impl<'tcx> Cx<'tcx> {
         if self.typeck_results().is_coercion_cast(source.hir_id) {
             // Convert the lexpr to a vexpr.
             ExprKind::Use { source: self.mirror_expr(source) }
-        } else if self.typeck_results().expr_ty(source).is_region_ptr() {
+        } else if self.typeck_results().expr_ty(source).is_ref() {
             // Special cased so that we can type check that the element
             // type of the source matches the pointed to type of the
             // destination.

compiler/rustc_ty_utils/src/abi.rs

@@ -539,7 +539,7 @@ fn make_thin_self_ptr<'tcx>(
         // get a built-in pointer type
         let mut fat_pointer_layout = layout;
         'descend_newtypes: while !fat_pointer_layout.ty.is_unsafe_ptr()
-            && !fat_pointer_layout.ty.is_region_ptr()
+            && !fat_pointer_layout.ty.is_ref()
         {
             for i in 0..fat_pointer_layout.fields.count() {
                 let field_layout = fat_pointer_layout.field(cx, i);