Change made for testing, seems to have no performance impact

Author: sterrettm2

src/xss-network-qsort.hpp

@@ -159,13 +159,20 @@ template <typename vtype,
           typename reg_t = typename vtype::reg_t>
 X86_SIMD_SORT_FINLINE void sort_vectors(reg_t *vecs)
 {
-    /* Run the initial sorting network to sort the columns of the [numVecs x
-     * num_lanes] matrix
-     */
-    bitonic_sort_n_vec<vtype, comparator, numVecs>(vecs);
+    if constexpr (numVecs == 1){
+        vecs[0] = vtype::sort_vec(vecs[0]);
+        if (comparator::leftmost(0, 1) == 1){
+            vecs[0] = vtype::reverse(vecs[0]);
+        }
+    }else{
+        /* Run the initial sorting network to sort the columns of the [numVecs x
+         * num_lanes] matrix
+         */
+        bitonic_sort_n_vec<vtype, comparator, numVecs>(vecs);
 
-    // Merge the vectors using bitonic merging networks
-    merge_n_vec<vtype, comparator, numVecs>(vecs);
+        // Merge the vectors using bitonic merging networks
+        merge_n_vec<vtype, comparator, numVecs>(vecs);
+    }
 }
 
 template <typename vtype,