Rollup merge of #126567 - compiler-errors:instance-kind, r=oli-obk,lcnr

Rename `InstanceDef` -> `InstanceKind`

Renames `InstanceDef` to `InstanceKind`. The `Def` here is confusing, and makes it hard to distinguish `Instance` and `InstanceDef`. `InstanceKind` makes this more obvious, since it's really just describing what *kind* of instance we have.

Not sure if this is large enough to warrant a types team MCP -- it's only 53 files. I don't personally think it does, but happy to write one if anyone disagrees. cc ``@rust-lang/types``

r? types

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/rustc_codegen_cranelift/src/constant.rs b/compiler/rustc_codegen_cranelift/src/constant.rs
index a53598018f4..87c5da3b7c3 100644
--- a/compiler/rustc_codegen_cranelift/src/constant.rs
+++ b/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);