Fix mask ops

crates/core_simd/src/masks/bitmask.rs

@@ -1,9 +1,9 @@
 use crate::LanesAtMost32;
 
 /// A mask where each lane is represented by a single bit.
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, PartialOrd, PartialEq, Ord, Eq, Hash)]
 #[repr(transparent)]
-pub struct BitMask<const LANES: usize>(pub(crate) u64)
+pub struct BitMask<const LANES: usize>(u64)
 where
     BitMask<LANES>: LanesAtMost32;
 
@@ -14,7 +14,7 @@ where
     /// Construct a mask by setting all lanes to the given value.
     pub fn splat(value: bool) -> Self {
         if value {
-            Self(u64::MAX)
+            Self(u64::MAX >> (64 - LANES))
         } else {
             Self(u64::MIN)
         }

crates/core_simd/src/reduction.rs

@@ -131,12 +131,12 @@ where
     /// Returns true if any lane is set, or false otherwise.
     #[inline]
     pub fn any(self) -> bool {
-        self.0 != 0
+        self != Self::splat(false)
     }
 
     /// Returns true if all lanes are set, or false otherwise.
     #[inline]
     pub fn all(self) -> bool {
-        self.0 == (!0) >> (64 - LANES)
+        self == Self::splat(true)
     }
 }