Remove bitmasks from LaneCount

Author: calebzulawski

crates/core_simd/src/lane_count.rs

@@ -6,37 +6,15 @@ use sealed::Sealed;
 /// A type representing a vector lane count.
 pub struct LaneCount<const LANES: usize>;
 
-impl<const LANES: usize> LaneCount<LANES> {
-    /// The number of bytes in a bitmask with this many lanes.
-    pub const BITMASK_LEN: usize = (LANES + 7) / 8;
-}
-
 /// Helper trait for vector lane counts.
-pub trait SupportedLaneCount: Sealed {
-    #[doc(hidden)]
-    type BitMask: Copy + Default + AsRef<[u8]> + AsMut<[u8]>;
-}
+pub trait SupportedLaneCount: Sealed {}
 
 impl<const LANES: usize> Sealed for LaneCount<LANES> {}
 
-impl SupportedLaneCount for LaneCount<1> {
-    type BitMask = [u8; 1];
-}
-impl SupportedLaneCount for LaneCount<2> {
-    type BitMask = [u8; 1];
-}
-impl SupportedLaneCount for LaneCount<4> {
-    type BitMask = [u8; 1];
-}
-impl SupportedLaneCount for LaneCount<8> {
-    type BitMask = [u8; 1];
-}
-impl SupportedLaneCount for LaneCount<16> {
-    type BitMask = [u8; 2];
-}
-impl SupportedLaneCount for LaneCount<32> {
-    type BitMask = [u8; 4];
-}
-impl SupportedLaneCount for LaneCount<64> {
-    type BitMask = [u8; 8];
-}
+impl SupportedLaneCount for LaneCount<1> {}
+impl SupportedLaneCount for LaneCount<2> {}
+impl SupportedLaneCount for LaneCount<4> {}
+impl SupportedLaneCount for LaneCount<8> {}
+impl SupportedLaneCount for LaneCount<16> {}
+impl SupportedLaneCount for LaneCount<32> {}
+impl SupportedLaneCount for LaneCount<64> {}