Optimal way to make a line and column permutation copy of an array

General Usage Performance
1

How can I optimize the following functions that copy a line-, column- or both- permutation (pl, pc, pcl, respectively) of a src array into a dest array?

In particular, can the temp array be avoided in pcl?

using BenchmarkTools

function pl!(dest, src, lines)
    n = lines
    @views for i = 1:fld(n, 2)
        dest[i,:] = src[n-i+1,:];
        dest[n-i+1,:] = src[i,:];
    end
end

function pc!(dest, src, columns)
    n = columns
    @views for i = 1:fld(n, 2)
        dest[:,i] = src[:,n-i+1];
        dest[:,n-i+1] = src[:,i];
    end
end

function pcl!(dest, src, lines, columns)
    temp = Array(dest)
    pc!(temp, src, columns)
    pl!(dest, temp, lines)
end

n = 1000;
m = 900;
a = zeros(n,m);
b = rand(n,m);

@btime pl!(a, b, n); # 14.170 ms (1000 allocations: 46.88 KiB)
@btime pc!(a, b, m); # 1.410 ms (900 allocations: 42.19 KiB)
@btime pcl!(a, b, n, m); # 16.194 ms (1902 allocations: 6.95 MiB)