Expand const impls of PartialEq, Eq, PartialOrd and Ord

[npmccallum]

Related to: #143800
Requires (includes): #146088
Requires (not included): #146089

[rustbot]

r? @Mark-Simulacrum

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[rustbot]

Some changes occurred to the intrinsics. Make sure the CTFE / Miri interpreter
gets adapted for the changes, if necessary.

cc @rust-lang/miri, @RalfJung, @oli-obk, @lcnr

[rust-log-analyzer]

The job tidy failed! Check out the build log: (web) (plain enhanced) (plain)

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 /// Trait for comparisons using the equality operator.
 ///
Diff in /checkout/library/core/src/cmp.rs:337:
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_diagnostic_item = "Eq"]
 #[rustc_const_unstable(feature = "const_cmp", issue = "143800")]
-pub const trait Eq: [const] PartialEq<Self> + PointeeSized {
+const pub trait Eq: [const] PartialEq<Self> + PointeeSized {
     // this method is used solely by `impl Eq or #[derive(Eq)]` to assert that every component of a
     // type implements `Eq` itself. The current deriving infrastructure means doing this assertion
     // without using a method on this trait is nearly impossible.
Diff in /checkout/library/core/src/cmp.rs:964:
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_diagnostic_item = "Ord"]
 #[rustc_const_unstable(feature = "const_cmp", issue = "143800")]
-pub const trait Ord: [const] Eq + [const] PartialOrd<Self> + PointeeSized {
+const pub trait Ord: [const] Eq + [const] PartialOrd<Self> + PointeeSized {
     /// This method returns an [`Ordering`] between `self` and `other`.
     ///
     /// By convention, `self.cmp(&other)` returns the ordering matching the expression
Diff in /checkout/library/core/src/cmp.rs:1349:
 #[rustc_diagnostic_item = "PartialOrd"]
 #[allow(multiple_supertrait_upcastable)] // FIXME(sized_hierarchy): remove this
 #[rustc_const_unstable(feature = "const_cmp", issue = "143800")]
-pub const trait PartialOrd<Rhs: PointeeSized = Self>: [const] PartialEq<Rhs> + PointeeSized {
+const pub trait PartialOrd<Rhs: PointeeSized = Self>:
+    [const] PartialEq<Rhs> + PointeeSized
+{
     /// This method returns an ordering between `self` and `other` values if one exists.
     ///
     /// # Examples
fmt: checked 6349 files

[oli-obk]

Oh no. What did I do with rustfmt. const pub trait Foo is funny