Rollup merge of rust-lang#84523 - m-ou-se:stabilize-ordering-helpers, r=m-ou-se

Stabilize ordering_helpers.

Tracking issue: rust-lang#79885

Closes rust-lang#79885

Author: m-ou-se

core/src/cmp.rs

@@ -334,7 +334,6 @@ impl Ordering {
     /// # Examples
     ///
     /// ```
-    /// #![feature(ordering_helpers)]
     /// use std::cmp::Ordering;
     ///
     /// assert_eq!(Ordering::Less.is_eq(), false);
@@ -343,7 +342,8 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[unstable(feature = "ordering_helpers", issue = "79885")]
+    #[rustc_const_stable(feature = "ordering_helpers", since = "1.53.0")]
+    #[stable(feature = "ordering_helpers", since = "1.53.0")]
     pub const fn is_eq(self) -> bool {
         matches!(self, Equal)
     }
@@ -353,7 +353,6 @@ impl Ordering {
     /// # Examples
     ///
     /// ```
-    /// #![feature(ordering_helpers)]
     /// use std::cmp::Ordering;
     ///
     /// assert_eq!(Ordering::Less.is_ne(), true);
@@ -362,7 +361,8 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[unstable(feature = "ordering_helpers", issue = "79885")]
+    #[rustc_const_stable(feature = "ordering_helpers", since = "1.53.0")]
+    #[stable(feature = "ordering_helpers", since = "1.53.0")]
     pub const fn is_ne(self) -> bool {
         !matches!(self, Equal)
     }
@@ -372,7 +372,6 @@ impl Ordering {
     /// # Examples
     ///
     /// ```
-    /// #![feature(ordering_helpers)]
     /// use std::cmp::Ordering;
     ///
     /// assert_eq!(Ordering::Less.is_lt(), true);
@@ -381,7 +380,8 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[unstable(feature = "ordering_helpers", issue = "79885")]
+    #[rustc_const_stable(feature = "ordering_helpers", since = "1.53.0")]
+    #[stable(feature = "ordering_helpers", since = "1.53.0")]
     pub const fn is_lt(self) -> bool {
         matches!(self, Less)
     }
@@ -391,7 +391,6 @@ impl Ordering {
     /// # Examples
     ///
     /// ```
-    /// #![feature(ordering_helpers)]
     /// use std::cmp::Ordering;
     ///
     /// assert_eq!(Ordering::Less.is_gt(), false);
@@ -400,7 +399,8 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[unstable(feature = "ordering_helpers", issue = "79885")]
+    #[rustc_const_stable(feature = "ordering_helpers", since = "1.53.0")]
+    #[stable(feature = "ordering_helpers", since = "1.53.0")]
     pub const fn is_gt(self) -> bool {
         matches!(self, Greater)
     }
@@ -410,7 +410,6 @@ impl Ordering {
     /// # Examples
     ///
     /// ```
-    /// #![feature(ordering_helpers)]
     /// use std::cmp::Ordering;
     ///
     /// assert_eq!(Ordering::Less.is_le(), true);
@@ -419,7 +418,8 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[unstable(feature = "ordering_helpers", issue = "79885")]
+    #[rustc_const_stable(feature = "ordering_helpers", since = "1.53.0")]
+    #[stable(feature = "ordering_helpers", since = "1.53.0")]
     pub const fn is_le(self) -> bool {
         !matches!(self, Greater)
     }
@@ -429,7 +429,6 @@ impl Ordering {
     /// # Examples
     ///
     /// ```
-    /// #![feature(ordering_helpers)]
     /// use std::cmp::Ordering;
     ///
     /// assert_eq!(Ordering::Less.is_ge(), false);
@@ -438,7 +437,8 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[unstable(feature = "ordering_helpers", issue = "79885")]
+    #[rustc_const_stable(feature = "ordering_helpers", since = "1.53.0")]
+    #[stable(feature = "ordering_helpers", since = "1.53.0")]
     pub const fn is_ge(self) -> bool {
         !matches!(self, Less)
     }