Remove `SpecOptionPartialEq`

2 files changed, 1 insertions, 35 deletions

diff --git a/compiler/rustc_index_macros/src/lib.rs b/compiler/rustc_index_macros/src/lib.rs
index 532cac5791e..015518ae4d6 100644
--- a/compiler/rustc_index_macros/src/lib.rs
+++ b/compiler/rustc_index_macros/src/lib.rs
@@ -34,13 +34,7 @@ mod newtype;
 #[proc_macro]
 #[cfg_attr(
     feature = "nightly",
-    allow_internal_unstable(
-        step_trait,
-        rustc_attrs,
-        trusted_step,
-        spec_option_partial_eq,
-        min_specialization
-    )
+    allow_internal_unstable(step_trait, rustc_attrs, trusted_step, min_specialization)
 )]
 pub fn newtype_index(input: TokenStream) -> TokenStream {
     newtype::newtype(input)
diff --git a/compiler/rustc_index_macros/src/newtype.rs b/compiler/rustc_index_macros/src/newtype.rs
index 0b25628b9e1..e5c2ba42483 100644
--- a/compiler/rustc_index_macros/src/newtype.rs
+++ b/compiler/rustc_index_macros/src/newtype.rs
@@ -156,32 +156,6 @@ impl Parse for Newtype {
             }
         };
 
-        let spec_partial_eq_impl = if let Lit::Int(max) = &max {
-            if let Ok(max_val) = max.base10_parse::<u32>() {
-                quote! {
-                    #gate_rustc_only
-                    impl core::option::SpecOptionPartialEq for #name {
-                        #[inline]
-                        fn eq(l: &Option<Self>, r: &Option<Self>) -> bool {
-                            if #max_val < u32::MAX {
-                                l.map(|i| i.as_u32()).unwrap_or(#max_val+1) == r.map(|i| i.as_u32()).unwrap_or(#max_val+1)
-                            } else {
-                                match (l, r) {
-                                    (Some(l), Some(r)) => r == l,
-                                    (None, None) => true,
-                                    _ => false
-                                }
-                            }
-                        }
-                    }
-                }
-            } else {
-                quote! {}
-            }
-        } else {
-            quote! {}
-        };
-
         Ok(Self(quote! {
             #(#attrs)*
             #[derive(Clone, Copy, PartialEq, Eq, Hash, #(#derive_paths),*)]
@@ -283,8 +257,6 @@ impl Parse for Newtype {
 
             #step
 
-            #spec_partial_eq_impl
-
             impl From<#name> for u32 {
                 #[inline]
                 fn from(v: #name) -> u32 {