Accept TyCtxt instead of TyCtxtAt in Ty::is_* functions

Functions in answer:

- `Ty::is_freeze`
- `Ty::is_sized`
- `Ty::is_unpin`
- `Ty::is_copy_modulo_regions`

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -1776,7 +1776,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
         // `Sized` bound in no way depends on precise regions, so this
         // shouldn't affect `is_sized`.
         let erased_ty = tcx.erase_regions(ty);
-        if !erased_ty.is_sized(tcx.at(span), self.param_env) {
+        if !erased_ty.is_sized(tcx, self.param_env) {
             // in current MIR construction, all non-control-flow rvalue
             // expressions evaluate through `as_temp` or `into` a return
             // slot or local, so to find all unsized rvalues it is enough

compiler/rustc_codegen_ssa/src/traits/type_.rs

@@ -5,7 +5,6 @@ use crate::common::TypeKind;
 use crate::mir::place::PlaceRef;
 use rustc_middle::ty::layout::TyAndLayout;
 use rustc_middle::ty::{self, Ty};
-use rustc_span::DUMMY_SP;
 use rustc_target::abi::call::{ArgAbi, CastTarget, FnAbi, Reg};
 use rustc_target::abi::{AddressSpace, Integer};
 
@@ -75,16 +74,16 @@ pub trait DerivedTypeMethods<'tcx>: BaseTypeMethods<'tcx> + MiscMethods<'tcx> {
     }
 
     fn type_is_sized(&self, ty: Ty<'tcx>) -> bool {
-        ty.is_sized(self.tcx().at(DUMMY_SP), ty::ParamEnv::reveal_all())
+        ty.is_sized(self.tcx(), ty::ParamEnv::reveal_all())
     }
 
     fn type_is_freeze(&self, ty: Ty<'tcx>) -> bool {
-        ty.is_freeze(self.tcx().at(DUMMY_SP), ty::ParamEnv::reveal_all())
+        ty.is_freeze(self.tcx(), ty::ParamEnv::reveal_all())
     }
 
     fn type_has_metadata(&self, ty: Ty<'tcx>) -> bool {
         let param_env = ty::ParamEnv::reveal_all();
-        if ty.is_sized(self.tcx().at(DUMMY_SP), param_env) {
+        if ty.is_sized(self.tcx(), param_env) {
             return false;
         }
 

compiler/rustc_const_eval/src/const_eval/valtrees.rs

@@ -212,7 +212,7 @@ fn create_pointee_place<'tcx>(
 ) -> MPlaceTy<'tcx> {
     let tcx = ecx.tcx.tcx;
 
-    if !ty.is_sized(ecx.tcx, ty::ParamEnv::empty()) {
+    if !ty.is_sized(*ecx.tcx, ty::ParamEnv::empty()) {
         // We need to create `Allocation`s for custom DSTs
 
         let (unsized_inner_ty, num_elems) = get_info_on_unsized_field(ty, valtree, tcx);
@@ -398,7 +398,7 @@ fn valtree_into_mplace<'tcx>(
 
                 let mut place_inner = match ty.kind() {
                     ty::Str | ty::Slice(_) => ecx.mplace_index(&place, i as u64).unwrap(),
-                    _ if !ty.is_sized(ecx.tcx, ty::ParamEnv::empty())
+                    _ if !ty.is_sized(*ecx.tcx, ty::ParamEnv::empty())
                         && i == branches.len() - 1 =>
                     {
                         // Note: For custom DSTs we need to manually process the last unsized field.

compiler/rustc_const_eval/src/interpret/eval_context.rs

@@ -468,7 +468,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
 
     #[inline]
     pub fn type_is_freeze(&self, ty: Ty<'tcx>) -> bool {
-        ty.is_freeze(self.tcx, self.param_env)
+        ty.is_freeze(*self.tcx, self.param_env)
     }
 
     pub fn load_mir(

compiler/rustc_const_eval/src/interpret/intern.rs

@@ -114,7 +114,7 @@ fn intern_shallow<'rt, 'mir, 'tcx, M: CompileTimeMachine<'mir, 'tcx, const_eval:
     if let InternMode::Static(mutability) = mode {
         // For this, we need to take into account `UnsafeCell`. When `ty` is `None`, we assume
         // no interior mutability.
-        let frozen = ty.map_or(true, |ty| ty.is_freeze(ecx.tcx, ecx.param_env));
+        let frozen = ty.map_or(true, |ty| ty.is_freeze(*ecx.tcx, ecx.param_env));
         // For statics, allocation mutability is the combination of place mutability and
         // type mutability.
         // The entire allocation needs to be mutable if it contains an `UnsafeCell` anywhere.

compiler/rustc_const_eval/src/interpret/validity.rs

@@ -15,7 +15,6 @@ use rustc_middle::mir::interpret::InterpError;
 use rustc_middle::ty;
 use rustc_middle::ty::layout::{LayoutOf, TyAndLayout};
 use rustc_span::symbol::{sym, Symbol};
-use rustc_span::DUMMY_SP;
 use rustc_target::abi::{Abi, Scalar as ScalarAbi, Size, VariantIdx, Variants, WrappingRange};
 
 use std::hash::Hash;
@@ -726,7 +725,7 @@ impl<'rt, 'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> ValueVisitor<'mir, 'tcx, M>
     ) -> InterpResult<'tcx> {
         // Special check preventing `UnsafeCell` inside unions in the inner part of constants.
         if matches!(self.ctfe_mode, Some(CtfeValidationMode::Const { inner: true, .. })) {
-            if !op.layout.ty.is_freeze(self.ecx.tcx.at(DUMMY_SP), self.ecx.param_env) {
+            if !op.layout.ty.is_freeze(*self.ecx.tcx, self.ecx.param_env) {
                 throw_validation_failure!(self.path, { "`UnsafeCell` in a `const`" });
             }
         }

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

@@ -8,7 +8,6 @@ use rustc_infer::infer::TyCtxtInferExt;
 use rustc_middle::mir;
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, subst::SubstsRef, AdtDef, Ty};
-use rustc_span::DUMMY_SP;
 use rustc_trait_selection::traits::{
     self, ImplSource, Obligation, ObligationCause, SelectionContext,
 };
@@ -92,7 +91,7 @@ impl Qualif for HasMutInterior {
     }
 
     fn in_any_value_of_ty<'tcx>(cx: &ConstCx<'_, 'tcx>, ty: Ty<'tcx>) -> bool {
-        !ty.is_freeze(cx.tcx.at(DUMMY_SP), cx.param_env)
+        !ty.is_freeze(cx.tcx, cx.param_env)
     }
 
     fn in_adt_inherently<'tcx>(

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

@@ -8,7 +8,6 @@ use rustc_middle::mir::{self, BasicBlock, Local, Location, Statement, StatementK
 use rustc_mir_dataflow::fmt::DebugWithContext;
 use rustc_mir_dataflow::JoinSemiLattice;
 use rustc_mir_dataflow::{Analysis, AnalysisDomain, CallReturnPlaces};
-use rustc_span::DUMMY_SP;
 
 use std::fmt;
 use std::marker::PhantomData;
@@ -120,10 +119,7 @@ where
     ///
     /// [rust-lang/unsafe-code-guidelines#134]: https://github.com/rust-lang/unsafe-code-guidelines/issues/134
     fn shared_borrow_allows_mutation(&self, place: mir::Place<'tcx>) -> bool {
-        !place
+        !place.ty(self.ccx.body, self.ccx.tcx).ty.is_freeze(self.ccx.tcx, self.ccx.param_env)
-            .ty(self.ccx.body, self.ccx.tcx)
-            .ty
-            .is_freeze(self.ccx.tcx.at(DUMMY_SP), self.ccx.param_env)
     }
 }
 

compiler/rustc_const_eval/src/transform/validate.rs

@@ -235,9 +235,8 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
             // `Operand::Copy` is only supposed to be used with `Copy` types.
             if let Operand::Copy(place) = operand {
                 let ty = place.ty(&self.body.local_decls, self.tcx).ty;
-                let span = self.body.source_info(location).span;
 
-                if !ty.is_copy_modulo_regions(self.tcx.at(span), self.param_env) {
+                if !ty.is_copy_modulo_regions(self.tcx, self.param_env) {
                     self.fail(location, format!("`Operand::Copy` with non-`Copy` type {}", ty));
                 }
             }

compiler/rustc_hir_analysis/src/check/check.rs

@@ -114,7 +114,7 @@ fn check_union_fields(tcx: TyCtxt<'_>, span: Span, item_def_id: LocalDefId) -> b
                 _ => {
                     // Fallback case: allow `ManuallyDrop` and things that are `Copy`.
                     ty.ty_adt_def().is_some_and(|adt_def| adt_def.is_manually_drop())
-                        || ty.is_copy_modulo_regions(tcx.at(span), param_env)
+                        || ty.is_copy_modulo_regions(tcx, param_env)
                 }
             }
         }

compiler/rustc_hir_analysis/src/check/intrinsicck.rs

@@ -33,7 +33,7 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> {
     fn is_thin_ptr_ty(&self, ty: Ty<'tcx>) -> bool {
         // Type still may have region variables, but `Sized` does not depend
         // on those, so just erase them before querying.
-        if ty.is_sized(self.tcx.at(DUMMY_SP), self.param_env) {
+        if ty.is_sized(self.tcx, self.param_env) {
             return true;
         }
         if let ty::Foreign(..) = ty.kind() {
@@ -128,7 +128,7 @@ impl<'a, 'tcx> InlineAsmCtxt<'a, 'tcx> {
 
         // Check that the type implements Copy. The only case where this can
         // possibly fail is for SIMD types which don't #[derive(Copy)].
-        if !ty.is_copy_modulo_regions(self.tcx.at(expr.span), self.param_env) {
+        if !ty.is_copy_modulo_regions(self.tcx, self.param_env) {
             let msg = "arguments for inline assembly must be copyable";
             let mut err = self.tcx.sess.struct_span_err(expr.span, msg);
             err.note(&format!("`{ty}` does not implement the Copy trait"));

compiler/rustc_lint/src/builtin.rs

@@ -752,7 +752,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingCopyImplementations {
             return;
         }
         let param_env = ty::ParamEnv::empty();
-        if ty.is_copy_modulo_regions(cx.tcx.at(item.span), param_env) {
+        if ty.is_copy_modulo_regions(cx.tcx, param_env) {
             return;
         }
         if can_type_implement_copy(

compiler/rustc_lint/src/types.rs

@@ -11,7 +11,7 @@ use rustc_middle::ty::subst::SubstsRef;
 use rustc_middle::ty::{self, AdtKind, DefIdTree, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable};
 use rustc_span::source_map;
 use rustc_span::symbol::sym;
-use rustc_span::{Span, Symbol, DUMMY_SP};
+use rustc_span::{Span, Symbol};
 use rustc_target::abi::{Abi, WrappingRange};
 use rustc_target::abi::{Integer, TagEncoding, Variants};
 use rustc_target::spec::abi::Abi as SpecAbi;
@@ -931,7 +931,7 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
         match *ty.kind() {
             ty::Adt(def, substs) => {
                 if def.is_box() && matches!(self.mode, CItemKind::Definition) {
-                    if ty.boxed_ty().is_sized(tcx.at(DUMMY_SP), self.cx.param_env) {
+                    if ty.boxed_ty().is_sized(tcx, self.cx.param_env) {
                         return FfiSafe;
                     } else {
                         return FfiUnsafe {
@@ -1082,7 +1082,7 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
             ty::RawPtr(ty::TypeAndMut { ty, .. }) | ty::Ref(_, ty, _)
                 if {
                     matches!(self.mode, CItemKind::Definition)
-                        && ty.is_sized(self.cx.tcx.at(DUMMY_SP), self.cx.param_env)
+                        && ty.is_sized(self.cx.tcx, self.cx.param_env)
                 } =>
             {
                 FfiSafe

compiler/rustc_middle/src/ty/layout.rs

@@ -830,7 +830,7 @@ where
                 } else {
                     match mt {
                         hir::Mutability::Not => {
-                            if ty.is_freeze(tcx.at(DUMMY_SP), cx.param_env()) {
+                            if ty.is_freeze(tcx, cx.param_env()) {
                                 PointerKind::Frozen
                             } else {
                                 PointerKind::SharedMutable
@@ -841,7 +841,7 @@ where
                             // noalias, as another pointer to the structure can be obtained, that
                             // is not based-on the original reference. We consider all !Unpin
                             // types to be potentially self-referential here.
-                            if ty.is_unpin(tcx.at(DUMMY_SP), cx.param_env()) {
+                            if ty.is_unpin(tcx, cx.param_env()) {
                                 PointerKind::UniqueBorrowed
                             } else {
                                 PointerKind::UniqueBorrowedPinned

compiler/rustc_middle/src/ty/util.rs

@@ -2,7 +2,6 @@
 
 use crate::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use crate::ty::layout::IntegerExt;
-use crate::ty::query::TyCtxtAt;
 use crate::ty::{
     self, DefIdTree, FallibleTypeFolder, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable,
     TypeVisitable,
@@ -821,12 +820,8 @@ impl<'tcx> Ty<'tcx> {
     /// does copies even when the type actually doesn't satisfy the
     /// full requirements for the `Copy` trait (cc #29149) -- this
     /// winds up being reported as an error during NLL borrow check.
-    pub fn is_copy_modulo_regions(
+    pub fn is_copy_modulo_regions(self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool {
-        self,
+        self.is_trivially_pure_clone_copy() || tcx.is_copy_raw(param_env.and(self))
-        tcx_at: TyCtxtAt<'tcx>,
-        param_env: ty::ParamEnv<'tcx>,
-    ) -> bool {
-        self.is_trivially_pure_clone_copy() || tcx_at.is_copy_raw(param_env.and(self))
     }
 
     /// Checks whether values of this type `T` have a size known at
@@ -835,8 +830,8 @@ impl<'tcx> Ty<'tcx> {
     /// over-approximation in generic contexts, where one can have
     /// strange rules like `<T as Foo<'static>>::Bar: Sized` that
     /// actually carry lifetime requirements.
-    pub fn is_sized(self, tcx_at: TyCtxtAt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool {
+    pub fn is_sized(self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool {
-        self.is_trivially_sized(tcx_at.tcx) || tcx_at.is_sized_raw(param_env.and(self))
+        self.is_trivially_sized(tcx) || tcx.is_sized_raw(param_env.and(self))
     }
 
     /// Checks whether values of this type `T` implement the `Freeze`
@@ -846,8 +841,8 @@ impl<'tcx> Ty<'tcx> {
     /// optimization as well as the rules around static values. Note
     /// that the `Freeze` trait is not exposed to end users and is
     /// effectively an implementation detail.
-    pub fn is_freeze(self, tcx_at: TyCtxtAt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool {
+    pub fn is_freeze(self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool {
-        self.is_trivially_freeze() || tcx_at.is_freeze_raw(param_env.and(self))
+        self.is_trivially_freeze() || tcx.is_freeze_raw(param_env.and(self))
     }
 
     /// Fast path helper for testing if a type is `Freeze`.
@@ -886,8 +881,8 @@ impl<'tcx> Ty<'tcx> {
     }
 
     /// Checks whether values of this type `T` implement the `Unpin` trait.
-    pub fn is_unpin(self, tcx_at: TyCtxtAt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool {
+    pub fn is_unpin(self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool {
-        self.is_trivially_unpin() || tcx_at.is_unpin_raw(param_env.and(self))
+        self.is_trivially_unpin() || tcx.is_unpin_raw(param_env.and(self))
     }
 
     /// Fast path helper for testing if a type is `Unpin`.

compiler/rustc_mir_build/src/build/expr/as_operand.rs

@@ -153,12 +153,11 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
 
         if tcx.features().unsized_fn_params {
             let ty = expr.ty;
-            let span = expr.span;
             let param_env = this.param_env;
 
-            if !ty.is_sized(tcx.at(span), param_env) {
+            if !ty.is_sized(tcx, param_env) {
                 // !sized means !copy, so this is an unsized move
-                assert!(!ty.is_copy_modulo_regions(tcx.at(span), param_env));
+                assert!(!ty.is_copy_modulo_regions(tcx, param_env));
 
                 // As described above, detect the case where we are passing a value of unsized
                 // type, and that value is coming from the deref of a box.

compiler/rustc_mir_build/src/check_unsafety.rs

@@ -260,7 +260,7 @@ impl<'a, 'tcx> Visitor<'a, 'tcx> for UnsafetyVisitor<'a, 'tcx> {
                     };
                     match borrow_kind {
                         BorrowKind::Shallow | BorrowKind::Shared | BorrowKind::Unique => {
-                            if !ty.is_freeze(self.tcx.at(pat.span), self.param_env) {
+                            if !ty.is_freeze(self.tcx, self.param_env) {
                                 self.requires_unsafe(pat.span, BorrowOfLayoutConstrainedField);
                             }
                         }
@@ -457,9 +457,7 @@ impl<'a, 'tcx> Visitor<'a, 'tcx> for UnsafetyVisitor<'a, 'tcx> {
                 if visitor.found {
                     match borrow_kind {
                         BorrowKind::Shallow | BorrowKind::Shared | BorrowKind::Unique
-                            if !self.thir[arg]
+                            if !self.thir[arg].ty.is_freeze(self.tcx, self.param_env) =>
-                                .ty
-                                .is_freeze(self.tcx.at(self.thir[arg].span), self.param_env) =>
                         {
                             self.requires_unsafe(expr.span, BorrowOfLayoutConstrainedField)
                         }

compiler/rustc_mir_build/src/thir/pattern/check_match.rs

@@ -1004,8 +1004,8 @@ fn maybe_point_at_variant<'a, 'p: 'a, 'tcx: 'a>(
 }
 
 /// Check if a by-value binding is by-value. That is, check if the binding's type is not `Copy`.
-fn is_binding_by_move(cx: &MatchVisitor<'_, '_, '_>, hir_id: HirId, span: Span) -> bool {
+fn is_binding_by_move(cx: &MatchVisitor<'_, '_, '_>, hir_id: HirId) -> bool {
-    !cx.typeck_results.node_type(hir_id).is_copy_modulo_regions(cx.tcx.at(span), cx.param_env)
+    !cx.typeck_results.node_type(hir_id).is_copy_modulo_regions(cx.tcx, cx.param_env)
 }
 
 /// Check that there are no borrow or move conflicts in `binding @ subpat` patterns.
@@ -1031,7 +1031,7 @@ fn check_borrow_conflicts_in_at_patterns(cx: &MatchVisitor<'_, '_, '_>, pat: &Pa
 
     // Get the binding move, extract the mutability if by-ref.
     let mut_outer = match typeck_results.extract_binding_mode(sess, pat.hir_id, pat.span) {
-        Some(ty::BindByValue(_)) if is_binding_by_move(cx, pat.hir_id, pat.span) => {
+        Some(ty::BindByValue(_)) if is_binding_by_move(cx, pat.hir_id) => {
             // We have `x @ pat` where `x` is by-move. Reject all borrows in `pat`.
             let mut conflicts_ref = Vec::new();
             sub.each_binding(|_, hir_id, span, _| {
@@ -1070,7 +1070,7 @@ fn check_borrow_conflicts_in_at_patterns(cx: &MatchVisitor<'_, '_, '_>, pat: &Pa
                 (Mutability::Mut, Mutability::Mut) => conflicts_mut_mut.push((span, name)), // 2x `ref mut`.
                 _ => conflicts_mut_ref.push((span, name)), // `ref` + `ref mut` in either direction.
             },
-            Some(ty::BindByValue(_)) if is_binding_by_move(cx, hir_id, span) => {
+            Some(ty::BindByValue(_)) if is_binding_by_move(cx, hir_id) => {
                 conflicts_move.push((span, name)) // `ref mut?` + by-move conflict.
             }
             Some(ty::BindByValue(_)) | None => {} // `ref mut?` + by-copy is fine.

compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs

@@ -506,7 +506,7 @@ impl<'tcx> ConstToPat<'tcx> {
                 // convert the dereferenced constant to a pattern that is the sub-pattern of the
                 // deref pattern.
                 _ => {
-                    if !pointee_ty.is_sized(tcx.at(span), param_env) {
+                    if !pointee_ty.is_sized(tcx, param_env) {
                         // `tcx.deref_mir_constant()` below will ICE with an unsized type
                         // (except slices, which are handled in a separate arm above).
                         let msg = format!("cannot use unsized non-slice type `{}` in constant patterns", pointee_ty);
@@ -534,7 +534,7 @@ impl<'tcx> ConstToPat<'tcx> {
             ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) | ty::FnDef(..) => {
                 PatKind::Constant { value: cv }
             }
-            ty::RawPtr(pointee) if pointee.ty.is_sized(tcx.at(span), param_env) => {
+            ty::RawPtr(pointee) if pointee.ty.is_sized(tcx, param_env) => {
                 PatKind::Constant { value: cv }
             }
             // FIXME: these can have very surprising behaviour where optimization levels or other

compiler/rustc_mir_transform/src/check_unsafety.rs

@@ -312,7 +312,7 @@ impl<'tcx> UnsafetyChecker<'_, 'tcx> {
                             } else if !place
                                 .ty(self.body, self.tcx)
                                 .ty
-                                .is_freeze(self.tcx.at(self.source_info.span), self.param_env)
+                                .is_freeze(self.tcx, self.param_env)
                             {
                                 UnsafetyViolationDetails::BorrowOfLayoutConstrainedField
                             } else {

compiler/rustc_mir_transform/src/const_prop.rs

@@ -633,7 +633,7 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
         }
         if !rvalue
             .ty(&self.ecx.frame().body.local_decls, *self.ecx.tcx)
-            .is_sized(self.ecx.tcx, self.param_env)
+            .is_sized(*self.ecx.tcx, self.param_env)
         {
             // the interpreter doesn't support unsized locals (only unsized arguments),
             // but rustc does (in a kinda broken way), so we have to skip them here

compiler/rustc_mir_transform/src/const_prop_lint.rs

@@ -500,7 +500,7 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
         }
         if !rvalue
             .ty(&self.ecx.frame().body.local_decls, *self.ecx.tcx)
-            .is_sized(self.ecx.tcx, self.param_env)
+            .is_sized(*self.ecx.tcx, self.param_env)
         {
             // the interpreter doesn't support unsized locals (only unsized arguments),
             // but rustc does (in a kinda broken way), so we have to skip them here

compiler/rustc_mir_transform/src/deduce_param_attrs.rs

@@ -11,7 +11,6 @@ use rustc_middle::mir::visit::{NonMutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::{Body, Local, Location, Operand, Terminator, TerminatorKind, RETURN_PLACE};
 use rustc_middle::ty::{self, DeducedParamAttrs, ParamEnv, Ty, TyCtxt};
 use rustc_session::config::OptLevel;
-use rustc_span::DUMMY_SP;
 
 /// A visitor that determines which arguments have been mutated. We can't use the mutability field
 /// on LocalDecl for this because it has no meaning post-optimization.
@@ -232,7 +231,7 @@ pub fn deduced_param_attrs<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId) -> &'tcx [Ded
         body.local_decls.iter().skip(1).take(body.arg_count).enumerate().map(
             |(arg_index, local_decl)| DeducedParamAttrs {
                 read_only: !deduce_read_only.mutable_args.contains(arg_index)
-                    && local_decl.ty.is_freeze(tcx.at(DUMMY_SP), ParamEnv::reveal_all()),
+                    && local_decl.ty.is_freeze(tcx, ParamEnv::reveal_all()),
             },
         ),
     );

compiler/rustc_mir_transform/src/shim.rs

@@ -312,7 +312,7 @@ fn build_clone_shim<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId, self_ty: Ty<'tcx>) -
     let param_env = tcx.param_env(def_id);
 
     let mut builder = CloneShimBuilder::new(tcx, def_id, self_ty);
-    let is_copy = self_ty.is_copy_modulo_regions(tcx.at(builder.span), param_env);
+    let is_copy = self_ty.is_copy_modulo_regions(tcx, param_env);
 
     let dest = Place::return_place();
     let src = tcx.mk_place_deref(Place::from(Local::new(1 + 0)));

compiler/rustc_monomorphize/src/collector.rs

@@ -1067,7 +1067,7 @@ fn find_vtable_types_for_unsizing<'tcx>(
     let ptr_vtable = |inner_source: Ty<'tcx>, inner_target: Ty<'tcx>| {
         let param_env = ty::ParamEnv::reveal_all();
         let type_has_metadata = |ty: Ty<'tcx>| -> bool {
-            if ty.is_sized(tcx.at(DUMMY_SP), param_env) {
+            if ty.is_sized(tcx, param_env) {
                 return false;
             }
             let tail = tcx.struct_tail_erasing_lifetimes(ty, param_env);

compiler/rustc_trait_selection/src/infer.rs

@@ -69,7 +69,7 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> {
         let ty = self.resolve_vars_if_possible(ty);
 
         if !(param_env, ty).needs_infer() {
-            return ty.is_copy_modulo_regions(self.tcx.at(span), param_env);
+            return ty.is_copy_modulo_regions(self.tcx, param_env);
         }
 
         let copy_def_id = self.tcx.require_lang_item(LangItem::Copy, None);

compiler/rustc_ty_utils/src/instance.rs

@@ -4,7 +4,7 @@ use rustc_infer::infer::TyCtxtInferExt;
 use rustc_middle::traits::CodegenObligationError;
 use rustc_middle::ty::subst::SubstsRef;
 use rustc_middle::ty::{self, Instance, TyCtxt, TypeVisitable};
-use rustc_span::{sym, DUMMY_SP};
+use rustc_span::sym;
 use rustc_trait_selection::traits;
 use traits::{translate_substs, Reveal};
 
@@ -236,7 +236,7 @@ fn resolve_associated_item<'tcx>(
                 if name == sym::clone {
                     let self_ty = trait_ref.self_ty();
 
-                    let is_copy = self_ty.is_copy_modulo_regions(tcx.at(DUMMY_SP), param_env);
+                    let is_copy = self_ty.is_copy_modulo_regions(tcx, param_env);
                     match self_ty.kind() {
                         _ if is_copy => (),
                         ty::Generator(..)

compiler/rustc_ty_utils/src/layout.rs

@@ -399,7 +399,7 @@ fn layout_of_uncached<'tcx>(
             }
 
             let pointee = tcx.normalize_erasing_regions(param_env, pointee);
-            if pointee.is_sized(tcx.at(DUMMY_SP), param_env) {
+            if pointee.is_sized(tcx, param_env) {
                 return Ok(tcx.intern_layout(LayoutS::scalar(cx, data_ptr)));
             }
 
@@ -755,8 +755,7 @@ fn layout_of_uncached<'tcx>(
                 } else {
                     let param_env = tcx.param_env(def.did());
                     let last_field = def.variant(v).fields.last().unwrap();
-                    let always_sized =
+                    let always_sized = tcx.type_of(last_field.did).is_sized(tcx, param_env);
-                        tcx.type_of(last_field.did).is_sized(tcx.at(DUMMY_SP), param_env);
                     if !always_sized { StructKind::MaybeUnsized } else { StructKind::AlwaysSized }
                 };
 

compiler/rustc_ty_utils/src/needs_drop.rs

@@ -109,7 +109,7 @@ where
 
             for component in components {
                 match *component.kind() {
-                    _ if component.is_copy_modulo_regions(tcx.at(DUMMY_SP), self.param_env) => (),
+                    _ if component.is_copy_modulo_regions(tcx, self.param_env) => (),
 
                     ty::Closure(_, substs) => {
                         queue_type(self, substs.as_closure().tupled_upvars_ty());