         { longlong-2-rep [ double-2-rep ] }
     } case ; foldable
 
-: [byte>rep-array] ( rep -- class )
-    {
-        { char-16-rep      [ [ 16 c:char <c-direct-array>      ] ] }
-        { uchar-16-rep     [ [ 16 c:uchar <c-direct-array>     ] ] }
-        { short-8-rep      [ [  8 c:short <c-direct-array>     ] ] }
-        { ushort-8-rep     [ [  8 c:ushort <c-direct-array>    ] ] }
-        { int-4-rep        [ [  4 c:int <c-direct-array>       ] ] }
-        { uint-4-rep       [ [  4 c:uint <c-direct-array>      ] ] }
-        { longlong-2-rep   [ [  2 c:longlong <c-direct-array>  ] ] }
-        { ulonglong-2-rep  [ [  2 c:ulonglong <c-direct-array> ] ] }
-        { float-4-rep      [ [  4 c:float <c-direct-array>     ] ] }
-        { double-2-rep     [ [  2 c:double <c-direct-array>    ] ] }
-    } case ; foldable
-
-: [>rep-array] ( rep -- class )
-    {
-        { char-16-rep      [ [ c:char >c-array      ] ] }
-        { uchar-16-rep     [ [ c:uchar >c-array     ] ] }
-        { short-8-rep      [ [ c:short >c-array     ] ] }
-        { ushort-8-rep     [ [ c:ushort >c-array    ] ] }
-        { int-4-rep        [ [ c:int >c-array       ] ] }
-        { uint-4-rep       [ [ c:uint >c-array      ] ] }
-        { longlong-2-rep   [ [ c:longlong >c-array  ] ] }
-        { ulonglong-2-rep  [ [ c:ulonglong >c-array ] ] }
-        { float-4-rep      [ [ c:float >c-array     ] ] }
-        { double-2-rep     [ [ c:double >c-array    ] ] }
-    } case ; foldable
-
-: [<rep-array>] ( rep -- class )
-    {
-        { char-16-rep      [ [ 16 c:char (c-array)      ] ] }
-        { uchar-16-rep     [ [ 16 c:uchar (c-array)     ] ] }
-        { short-8-rep      [ [  8 c:short (c-array)     ] ] }
-        { ushort-8-rep     [ [  8 c:ushort (c-array)    ] ] }
-        { int-4-rep        [ [  4 c:int (c-array)       ] ] }
-        { uint-4-rep       [ [  4 c:uint (c-array)      ] ] }
-        { longlong-2-rep   [ [  2 c:longlong (c-array)  ] ] }
-        { ulonglong-2-rep  [ [  2 c:ulonglong (c-array) ] ] }
-        { float-4-rep      [ [  4 c:float (c-array)     ] ] }
-        { double-2-rep     [ [  2 c:double (c-array)    ] ] }
-    } case ; foldable
+: byte>rep-array ( byte-array rep -- array )
+    {
+        { char-16-rep      [ 16 c:char <c-direct-array>      ] }
+        { uchar-16-rep     [ 16 c:uchar <c-direct-array>     ] }
+        { short-8-rep      [  8 c:short <c-direct-array>     ] }
+        { ushort-8-rep     [  8 c:ushort <c-direct-array>    ] }
+        { int-4-rep        [  4 c:int <c-direct-array>       ] }
+        { uint-4-rep       [  4 c:uint <c-direct-array>      ] }
+        { longlong-2-rep   [  2 c:longlong <c-direct-array>  ] }
+        { ulonglong-2-rep  [  2 c:ulonglong <c-direct-array> ] }
+        { float-4-rep      [  4 c:float <c-direct-array>     ] }
+        { double-2-rep     [  2 c:double <c-direct-array>    ] }
+    } case ; inline
+
+: >rep-array ( seq rep -- array )
+    {
+        { char-16-rep      [ c:char >c-array      ] }
+        { uchar-16-rep     [ c:uchar >c-array     ] }
+        { short-8-rep      [ c:short >c-array     ] }
+        { ushort-8-rep     [ c:ushort >c-array    ] }
+        { int-4-rep        [ c:int >c-array       ] }
+        { uint-4-rep       [ c:uint >c-array      ] }
+        { longlong-2-rep   [ c:longlong >c-array  ] }
+        { ulonglong-2-rep  [ c:ulonglong >c-array ] }
+        { float-4-rep      [ c:float >c-array     ] }
+        { double-2-rep     [ c:double >c-array    ] }
+    } case ; inline
+
+: <rep-array> ( rep -- array )
+    {
+        { char-16-rep      [ 16 c:char (c-array)      ] }
+        { uchar-16-rep     [ 16 c:uchar (c-array)     ] }
+        { short-8-rep      [  8 c:short (c-array)     ] }
+        { ushort-8-rep     [  8 c:ushort (c-array)    ] }
+        { int-4-rep        [  4 c:int (c-array)       ] }
+        { uint-4-rep       [  4 c:uint (c-array)      ] }
+        { longlong-2-rep   [  2 c:longlong (c-array)  ] }
+        { ulonglong-2-rep  [  2 c:ulonglong (c-array) ] }
+        { float-4-rep      [  4 c:float (c-array)     ] }
+        { double-2-rep     [  2 c:double (c-array)    ] }
+    } case ; inline
 
 : rep-tf-values ( rep -- t f )
     float-vector-rep? [ -1 bits>double 0.0 ] [ -1 0 ] if ;
 
-: >rep-array ( a rep -- a' )
-    [byte>rep-array] call( a -- a' ) ; inline
-: 2>rep-array ( a b rep -- a' b' )
-    [byte>rep-array] '[ _ call( a -- a' ) ] bi@ ; inline
-: <rep-array> ( rep -- a' )
-    [<rep-array>] call( -- a' ) ; inline
+: 2byte>rep-array ( a b rep -- a' b' )
+    '[ _ byte>rep-array ] bi@ ; inline
 
 : components-map ( a rep quot -- c )
-    [ [ >rep-array ] [ rep-length ] bi ] dip unrolled-map-unsafe underlying>> ; inline
+    [ [ byte>rep-array ] [ rep-length ] bi ] dip unrolled-map-unsafe underlying>> ; inline
 : components-2map ( a b rep quot -- c )
-    [ [ 2>rep-array ] [ rep-length ] bi ] dip unrolled-2map-unsafe underlying>> ; inline
+    [ [ 2byte>rep-array ] [ rep-length ] bi ] dip unrolled-2map-unsafe underlying>> ; inline
 : components-reduce ( a rep quot -- x )
-    [ >rep-array [ ] ] dip map-reduce ; inline
+    [ byte>rep-array [ ] ] dip map-reduce ; inline
 
 : bitwise-components-map ( a rep quot -- c )
-    [ >bitwise-vector-rep [ >rep-array ] [ rep-length ] bi ] dip
+    [ >bitwise-vector-rep [ byte>rep-array ] [ rep-length ] bi ] dip
     unrolled-map-unsafe underlying>> ; inline
 : bitwise-components-2map ( a b rep quot -- c )
-    [ >bitwise-vector-rep [ 2>rep-array ] [ rep-length ] bi ] dip
+    [ >bitwise-vector-rep [ 2byte>rep-array ] [ rep-length ] bi ] dip
     unrolled-2map-unsafe underlying>> ; inline
 : bitwise-components-reduce ( a rep quot -- x )
-    [ >bitwise-vector-rep >rep-array [ ] ] dip map-reduce ; inline
+    [ >bitwise-vector-rep byte>rep-array [ ] ] dip map-reduce ; inline
 : bitwise-components-reduce* ( a rep identity quot -- x )
-    [ >bitwise-vector-rep >rep-array ] 2dip reduce ; inline
+    [ >bitwise-vector-rep byte>rep-array ] 2dip reduce ; inline
 
 :: (vshuffle) ( a elts rep -- c )
-    a rep >rep-array :> a'
+    a rep byte>rep-array :> a'
     rep <rep-array> :> c'
     elts rep rep-length [| from to |
         from rep rep-length 1 - bitand

    ] unrolled-each-integer
    c' underlying>> ;
SIMD-INTRINSIC:: (simd-vmerge-tail)      ( a b rep -- c )
    a b rep 2>rep-array :> ( a' b' )
    rep <rep-array> :> c'
    rep rep-length 2 /i :> len
    len [| n |

    [ rep rep ] if :> ( a-rep b-rep )
    b-rep widen-vector-rep signed-rep :> wide-rep
    wide-rep rep-component-type :> wide-type
    a a-rep byte>rep-array 2 <groups> :> a'
    b b-rep byte>rep-array 2 <groups> :> b'
    a' b' rep rep-length 2 /i [
        [ [ first  ] bi@ * ]
        [ [ second ] bi@ * ] 2bi +
