When performing shift on empty dimensions(i.e. where dimensions are [3 1 3 1]) the shift function breaks and returns incorrect results. This bug was introduced with the memcpy optimization changes because of the dimension reordering.

Description

The JIT preconfiguration steps are broken because of the way we reorder the dimensions for the shift node.

Reproducible Code and/or Steps

void test_shift(int ia=1,int ib=3){
    array a=iota(dim4(ia,ib));
    af_print(a);
    af_print(shift(a,-1));
    af_print(shift(a,1));
    af_print(shift(a,0,-1));
    af_print(shift(a,0,1));
}

System Information

N/A

Checklist

• Using the latest available ArrayFire release
• GPU drivers are up to date