Rollup of 4 pull requests

compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -8,7 +8,7 @@ use rustc_hir::intravisit::Visitor;
 use rustc_hir::{self as hir, BindingMode, ByRef, Node};
 use rustc_middle::bug;
 use rustc_middle::mir::{Mutability, Place, PlaceRef, ProjectionElem};
-use rustc_middle::ty::{self, InstanceDef, Ty, TyCtxt, Upcast};
+use rustc_middle::ty::{self, InstanceKind, Ty, TyCtxt, Upcast};
 use rustc_middle::{
     hir::place::PlaceBase,
     mir::{self, BindingForm, Local, LocalDecl, LocalInfo, LocalKind, Location},
@@ -1045,7 +1045,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
     fn suggest_using_iter_mut(&self, err: &mut Diag<'_>) {
         let source = self.body.source;
         let hir = self.infcx.tcx.hir();
-        if let InstanceDef::Item(def_id) = source.instance
+        if let InstanceKind::Item(def_id) = source.instance
             && let Some(Node::Expr(hir::Expr { hir_id, kind, .. })) = hir.get_if_local(def_id)
             && let ExprKind::Closure(hir::Closure { kind: hir::ClosureKind::Closure, .. }) = kind
             && let Node::Expr(expr) = self.infcx.tcx.parent_hir_node(*hir_id)

compiler/rustc_codegen_cranelift/src/abi/mod.rs

@@ -399,7 +399,7 @@ pub(crate) fn codegen_terminator_call<'tcx>(
         }
 
         match instance.def {
-            InstanceDef::Intrinsic(_) => {
+            InstanceKind::Intrinsic(_) => {
                 match crate::intrinsics::codegen_intrinsic_call(
                     fx,
                     instance,
@@ -412,7 +412,7 @@ pub(crate) fn codegen_terminator_call<'tcx>(
                     Err(instance) => Some(instance),
                 }
             }
-            InstanceDef::DropGlue(_, None) | ty::InstanceDef::AsyncDropGlueCtorShim(_, None) => {
+            InstanceKind::DropGlue(_, None) | ty::InstanceKind::AsyncDropGlueCtorShim(_, None) => {
                 // empty drop glue - a nop.
                 let dest = target.expect("Non terminating drop_in_place_real???");
                 let ret_block = fx.get_block(dest);
@@ -494,7 +494,7 @@ pub(crate) fn codegen_terminator_call<'tcx>(
 
     let (func_ref, first_arg_override) = match instance {
         // Trait object call
-        Some(Instance { def: InstanceDef::Virtual(_, idx), .. }) => {
+        Some(Instance { def: InstanceKind::Virtual(_, idx), .. }) => {
             if fx.clif_comments.enabled() {
                 let nop_inst = fx.bcx.ins().nop();
                 fx.add_comment(
@@ -598,7 +598,7 @@ pub(crate) fn codegen_drop<'tcx>(
     let ty = drop_place.layout().ty;
     let drop_instance = Instance::resolve_drop_in_place(fx.tcx, ty).polymorphize(fx.tcx);
 
-    if let ty::InstanceDef::DropGlue(_, None) | ty::InstanceDef::AsyncDropGlueCtorShim(_, None) =
+    if let ty::InstanceKind::DropGlue(_, None) | ty::InstanceKind::AsyncDropGlueCtorShim(_, None) =
         drop_instance.def
     {
         // we don't actually need to drop anything
@@ -630,7 +630,7 @@ pub(crate) fn codegen_drop<'tcx>(
                 // FIXME(eddyb) perhaps move some of this logic into
                 // `Instance::resolve_drop_in_place`?
                 let virtual_drop = Instance {
-                    def: ty::InstanceDef::Virtual(drop_instance.def_id(), 0),
+                    def: ty::InstanceKind::Virtual(drop_instance.def_id(), 0),
                     args: drop_instance.args,
                 };
                 let fn_abi =
@@ -673,7 +673,7 @@ pub(crate) fn codegen_drop<'tcx>(
                 fx.bcx.switch_to_block(continued);
 
                 let virtual_drop = Instance {
-                    def: ty::InstanceDef::Virtual(drop_instance.def_id(), 0),
+                    def: ty::InstanceKind::Virtual(drop_instance.def_id(), 0),
                     args: drop_instance.args,
                 };
                 let fn_abi =
@@ -684,7 +684,7 @@ pub(crate) fn codegen_drop<'tcx>(
                 fx.bcx.ins().call_indirect(sig, drop_fn, &[data]);
             }
             _ => {
-                assert!(!matches!(drop_instance.def, InstanceDef::Virtual(_, _)));
+                assert!(!matches!(drop_instance.def, InstanceKind::Virtual(_, _)));
 
                 let fn_abi =
                     RevealAllLayoutCx(fx.tcx).fn_abi_of_instance(drop_instance, ty::List::empty());

compiler/rustc_codegen_cranelift/src/constant.rs

@@ -50,7 +50,7 @@ pub(crate) fn codegen_tls_ref<'tcx>(
 ) -> CValue<'tcx> {
     let tls_ptr = if !def_id.is_local() && fx.tcx.needs_thread_local_shim(def_id) {
         let instance = ty::Instance {
-            def: ty::InstanceDef::ThreadLocalShim(def_id),
+            def: ty::InstanceKind::ThreadLocalShim(def_id),
             args: ty::GenericArgs::empty(),
         };
         let func_ref = fx.get_function_ref(instance);

compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs

@@ -1261,7 +1261,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
         }
 
         // Unimplemented intrinsics must have a fallback body. The fallback body is obtained
-        // by converting the `InstanceDef::Intrinsic` to an `InstanceDef::Item`.
+        // by converting the `InstanceKind::Intrinsic` to an `InstanceKind::Item`.
         _ => {
             let intrinsic = fx.tcx.intrinsic(instance.def_id()).unwrap();
             if intrinsic.must_be_overridden {

compiler/rustc_codegen_cranelift/src/lib.rs

@@ -98,7 +98,7 @@ mod prelude {
     pub(crate) use rustc_middle::mir::{self, *};
     pub(crate) use rustc_middle::ty::layout::{LayoutOf, TyAndLayout};
     pub(crate) use rustc_middle::ty::{
-        self, FloatTy, Instance, InstanceDef, IntTy, ParamEnv, Ty, TyCtxt, UintTy,
+        self, FloatTy, Instance, InstanceKind, IntTy, ParamEnv, Ty, TyCtxt, UintTy,
     };
     pub(crate) use rustc_span::Span;
     pub(crate) use rustc_target::abi::{Abi, FieldIdx, Scalar, Size, VariantIdx, FIRST_VARIANT};

compiler/rustc_codegen_ssa/src/back/symbol_export.rs

@@ -310,7 +310,7 @@ fn exported_symbols_provider_local(
 
     if tcx.sess.opts.share_generics() && tcx.local_crate_exports_generics() {
         use rustc_middle::mir::mono::{Linkage, MonoItem, Visibility};
-        use rustc_middle::ty::InstanceDef;
+        use rustc_middle::ty::InstanceKind;
 
         // Normally, we require that shared monomorphizations are not hidden,
         // because if we want to re-use a monomorphization from a Rust dylib, it
@@ -337,7 +337,7 @@ fn exported_symbols_provider_local(
             }
 
             match *mono_item {
-                MonoItem::Fn(Instance { def: InstanceDef::Item(def), args }) => {
+                MonoItem::Fn(Instance { def: InstanceKind::Item(def), args }) => {
                     if args.non_erasable_generics(tcx, def).next().is_some() {
                         let symbol = ExportedSymbol::Generic(def, args);
                         symbols.push((
@@ -350,7 +350,7 @@ fn exported_symbols_provider_local(
                         ));
                     }
                 }
-                MonoItem::Fn(Instance { def: InstanceDef::DropGlue(def_id, Some(ty)), args }) => {
+                MonoItem::Fn(Instance { def: InstanceKind::DropGlue(def_id, Some(ty)), args }) => {
                     // A little sanity-check
                     debug_assert_eq!(
                         args.non_erasable_generics(tcx, def_id).next(),
@@ -366,7 +366,7 @@ fn exported_symbols_provider_local(
                     ));
                 }
                 MonoItem::Fn(Instance {
-                    def: InstanceDef::AsyncDropGlueCtorShim(def_id, Some(ty)),
+                    def: InstanceKind::AsyncDropGlueCtorShim(def_id, Some(ty)),
                     args,
                 }) => {
                     // A little sanity-check
@@ -556,7 +556,7 @@ pub fn symbol_name_for_instance_in_crate<'tcx>(
             rustc_symbol_mangling::symbol_name_for_instance_in_crate(
                 tcx,
                 ty::Instance {
-                    def: ty::InstanceDef::ThreadLocalShim(def_id),
+                    def: ty::InstanceKind::ThreadLocalShim(def_id),
                     args: ty::GenericArgs::empty(),
                 },
                 instantiating_crate,

compiler/rustc_codegen_ssa/src/mir/block.rs

@@ -510,7 +510,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         let ty = self.monomorphize(ty);
         let drop_fn = Instance::resolve_drop_in_place(bx.tcx(), ty);
 
-        if let ty::InstanceDef::DropGlue(_, None) = drop_fn.def {
+        if let ty::InstanceKind::DropGlue(_, None) = drop_fn.def {
             // we don't actually need to drop anything.
             return helper.funclet_br(self, bx, target, mergeable_succ);
         }
@@ -541,7 +541,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 //                \-------/
                 //
                 let virtual_drop = Instance {
-                    def: ty::InstanceDef::Virtual(drop_fn.def_id(), 0), // idx 0: the drop function
+                    def: ty::InstanceKind::Virtual(drop_fn.def_id(), 0), // idx 0: the drop function
                     args: drop_fn.args,
                 };
                 debug!("ty = {:?}", ty);
@@ -583,7 +583,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 //
                 // SO THEN WE CAN USE THE ABOVE CODE.
                 let virtual_drop = Instance {
-                    def: ty::InstanceDef::Virtual(drop_fn.def_id(), 0), // idx 0: the drop function
+                    def: ty::InstanceKind::Virtual(drop_fn.def_id(), 0), // idx 0: the drop function
                     args: drop_fn.args,
                 };
                 debug!("ty = {:?}", ty);
@@ -855,7 +855,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         let def = instance.map(|i| i.def);
 
         if let Some(
-            ty::InstanceDef::DropGlue(_, None) | ty::InstanceDef::AsyncDropGlueCtorShim(_, None),
+            ty::InstanceKind::DropGlue(_, None) | ty::InstanceKind::AsyncDropGlueCtorShim(_, None),
         ) = def
         {
             // Empty drop glue; a no-op.
@@ -871,7 +871,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
 
         // Handle intrinsics old codegen wants Expr's for, ourselves.
         let intrinsic = match def {
-            Some(ty::InstanceDef::Intrinsic(def_id)) => Some(bx.tcx().intrinsic(def_id).unwrap()),
+            Some(ty::InstanceKind::Intrinsic(def_id)) => Some(bx.tcx().intrinsic(def_id).unwrap()),
             _ => None,
         };
 
@@ -1026,7 +1026,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         'make_args: for (i, arg) in first_args.iter().enumerate() {
             let mut op = self.codegen_operand(bx, &arg.node);
 
-            if let (0, Some(ty::InstanceDef::Virtual(_, idx))) = (i, def) {
+            if let (0, Some(ty::InstanceKind::Virtual(_, idx))) = (i, def) {
                 match op.val {
                     Pair(data_ptr, meta) => {
                         // In the case of Rc<Self>, we need to explicitly pass a

compiler/rustc_codegen_ssa/src/mir/rvalue.rs

@@ -704,7 +704,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 let static_ = if !def_id.is_local() && bx.cx().tcx().needs_thread_local_shim(def_id)
                 {
                     let instance = ty::Instance {
-                        def: ty::InstanceDef::ThreadLocalShim(def_id),
+                        def: ty::InstanceKind::ThreadLocalShim(def_id),
                         args: ty::GenericArgs::empty(),
                     };
                     let fn_ptr = bx.get_fn_addr(instance);

compiler/rustc_const_eval/src/check_consts/check.rs

@@ -10,7 +10,7 @@ use rustc_middle::mir::visit::{MutatingUseContext, NonMutatingUseContext, PlaceC
 use rustc_middle::mir::*;
 use rustc_middle::span_bug;
 use rustc_middle::ty::{self, adjustment::PointerCoercion, Ty, TyCtxt};
-use rustc_middle::ty::{Instance, InstanceDef, TypeVisitableExt};
+use rustc_middle::ty::{Instance, InstanceKind, TypeVisitableExt};
 use rustc_mir_dataflow::Analysis;
 use rustc_span::{sym, Span, Symbol, DUMMY_SP};
 use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt as _;
@@ -769,7 +769,7 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> {
 
                         if let Ok(Some(instance)) =
                             Instance::resolve(tcx, param_env, callee, fn_args)
-                            && let InstanceDef::Item(def) = instance.def
+                            && let InstanceKind::Item(def) = instance.def
                         {
                             // Resolve a trait method call to its concrete implementation, which may be in a
                             // `const` trait impl. This is only used for the const stability check below, since

compiler/rustc_const_eval/src/const_eval/eval_queries.rs

@@ -289,7 +289,7 @@ pub fn eval_to_const_value_raw_provider<'tcx>(
 
     // We call `const_eval` for zero arg intrinsics, too, in order to cache their value.
     // Catch such calls and evaluate them instead of trying to load a constant's MIR.
-    if let ty::InstanceDef::Intrinsic(def_id) = key.value.instance.def {
+    if let ty::InstanceKind::Intrinsic(def_id) = key.value.instance.def {
         let ty = key.value.instance.ty(tcx, key.param_env);
         let ty::FnDef(_, args) = ty.kind() else {
             bug!("intrinsic with type {:?}", ty);

compiler/rustc_const_eval/src/const_eval/machine.rs

@@ -398,10 +398,10 @@ impl<'tcx> interpret::Machine<'tcx> for CompileTimeMachine<'tcx> {
 
     fn load_mir(
         ecx: &InterpCx<'tcx, Self>,
-        instance: ty::InstanceDef<'tcx>,
+        instance: ty::InstanceKind<'tcx>,
     ) -> InterpResult<'tcx, &'tcx mir::Body<'tcx>> {
         match instance {
-            ty::InstanceDef::Item(def) => Ok(ecx.tcx.mir_for_ctfe(def)),
+            ty::InstanceKind::Item(def) => Ok(ecx.tcx.mir_for_ctfe(def)),
             _ => Ok(ecx.tcx.instance_mir(instance)),
         }
     }
@@ -424,7 +424,7 @@ impl<'tcx> interpret::Machine<'tcx> for CompileTimeMachine<'tcx> {
         };
 
         // Only check non-glue functions
-        if let ty::InstanceDef::Item(def) = instance.def {
+        if let ty::InstanceKind::Item(def) = instance.def {
             // Execution might have wandered off into other crates, so we cannot do a stability-
             // sensitive check here. But we can at least rule out functions that are not const at
             // all. That said, we have to allow calling functions inside a trait marked with
@@ -540,7 +540,7 @@ impl<'tcx> interpret::Machine<'tcx> for CompileTimeMachine<'tcx> {
                     );
                 }
                 return Ok(Some(ty::Instance {
-                    def: ty::InstanceDef::Item(instance.def_id()),
+                    def: ty::InstanceKind::Item(instance.def_id()),
                     args: instance.args,
                 }));
             }

compiler/rustc_const_eval/src/interpret/eval_context.rs

@@ -562,7 +562,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
 
     pub fn load_mir(
         &self,
-        instance: ty::InstanceDef<'tcx>,
+        instance: ty::InstanceKind<'tcx>,
         promoted: Option<mir::Promoted>,
     ) -> InterpResult<'tcx, &'tcx mir::Body<'tcx>> {
         trace!("load mir(instance={:?}, promoted={:?})", instance, promoted);

compiler/rustc_const_eval/src/interpret/machine.rs

@@ -177,7 +177,7 @@ pub trait Machine<'tcx>: Sized {
     /// constants, ...
     fn load_mir(
         ecx: &InterpCx<'tcx, Self>,
-        instance: ty::InstanceDef<'tcx>,
+        instance: ty::InstanceKind<'tcx>,
     ) -> InterpResult<'tcx, &'tcx mir::Body<'tcx>> {
         Ok(ecx.tcx.instance_mir(instance))
     }

compiler/rustc_const_eval/src/interpret/terminator.rs

@@ -175,7 +175,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
             Drop { place, target, unwind, replace: _ } => {
                 let place = self.eval_place(place)?;
                 let instance = Instance::resolve_drop_in_place(*self.tcx, place.layout.ty);
-                if let ty::InstanceDef::DropGlue(_, None) = instance.def {
+                if let ty::InstanceKind::DropGlue(_, None) = instance.def {
                     // This is the branch we enter if and only if the dropped type has no drop glue
                     // whatsoever. This can happen as a result of monomorphizing a drop of a
                     // generic. In order to make sure that generic and non-generic code behaves
@@ -550,7 +550,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
         };
 
         match instance.def {
-            ty::InstanceDef::Intrinsic(def_id) => {
+            ty::InstanceKind::Intrinsic(def_id) => {
                 assert!(self.tcx.intrinsic(def_id).is_some());
                 // FIXME: Should `InPlace` arguments be reset to uninit?
                 if let Some(fallback) = M::call_intrinsic(
@@ -562,7 +562,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
                     unwind,
                 )? {
                     assert!(!self.tcx.intrinsic(fallback.def_id()).unwrap().must_be_overridden);
-                    assert!(matches!(fallback.def, ty::InstanceDef::Item(_)));
+                    assert!(matches!(fallback.def, ty::InstanceKind::Item(_)));
                     return self.eval_fn_call(
                         FnVal::Instance(fallback),
                         (caller_abi, caller_fn_abi),
@@ -576,18 +576,18 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
                     Ok(())
                 }
             }
-            ty::InstanceDef::VTableShim(..)
-            | ty::InstanceDef::ReifyShim(..)
-            | ty::InstanceDef::ClosureOnceShim { .. }
-            | ty::InstanceDef::ConstructCoroutineInClosureShim { .. }
-            | ty::InstanceDef::CoroutineKindShim { .. }
-            | ty::InstanceDef::FnPtrShim(..)
-            | ty::InstanceDef::DropGlue(..)
-            | ty::InstanceDef::CloneShim(..)
-            | ty::InstanceDef::FnPtrAddrShim(..)
-            | ty::InstanceDef::ThreadLocalShim(..)
-            | ty::InstanceDef::AsyncDropGlueCtorShim(..)
-            | ty::InstanceDef::Item(_) => {
+            ty::InstanceKind::VTableShim(..)
+            | ty::InstanceKind::ReifyShim(..)
+            | ty::InstanceKind::ClosureOnceShim { .. }
+            | ty::InstanceKind::ConstructCoroutineInClosureShim { .. }
+            | ty::InstanceKind::CoroutineKindShim { .. }
+            | ty::InstanceKind::FnPtrShim(..)
+            | ty::InstanceKind::DropGlue(..)
+            | ty::InstanceKind::CloneShim(..)
+            | ty::InstanceKind::FnPtrAddrShim(..)
+            | ty::InstanceKind::ThreadLocalShim(..)
+            | ty::InstanceKind::AsyncDropGlueCtorShim(..)
+            | ty::InstanceKind::Item(_) => {
                 // We need MIR for this fn
                 let Some((body, instance)) = M::find_mir_or_eval_fn(
                     self,
@@ -786,9 +786,9 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
                     Ok(()) => Ok(()),
                 }
             }
-            // `InstanceDef::Virtual` does not have callable MIR. Calls to `Virtual` instances must be
+            // `InstanceKind::Virtual` does not have callable MIR. Calls to `Virtual` instances must be
             // codegen'd / interpreted as virtual calls through the vtable.
-            ty::InstanceDef::Virtual(def_id, idx) => {
+            ty::InstanceKind::Virtual(def_id, idx) => {
                 let mut args = args.to_vec();
                 // We have to implement all "object safe receivers". So we have to go search for a
                 // pointer or `dyn Trait` type, but it could be wrapped in newtypes. So recursively
@@ -965,7 +965,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
         let place = self.force_allocation(place)?;
 
         // We behave a bit different from codegen here.
-        // Codegen creates an `InstanceDef::Virtual` with index 0 (the slot of the drop method) and
+        // Codegen creates an `InstanceKind::Virtual` with index 0 (the slot of the drop method) and
         // then dispatches that to the normal call machinery. However, our call machinery currently
         // only supports calling `VtblEntry::Method`; it would choke on a `MetadataDropInPlace`. So
         // instead we do the virtual call stuff ourselves. It's easier here than in `eval_fn_call`

compiler/rustc_const_eval/src/interpret/util.rs

@@ -44,7 +44,7 @@ where
                 | ty::CoroutineClosure(def_id, args, ..)
                 | ty::Coroutine(def_id, args, ..)
                 | ty::FnDef(def_id, args) => {
-                    let instance = ty::InstanceDef::Item(def_id);
+                    let instance = ty::InstanceKind::Item(def_id);
                     let unused_params = self.tcx.unused_generic_params(instance);
                     for (index, arg) in args.into_iter().enumerate() {
                         let index = index