Conversion by `cu` casts Float64 to Float32 but not Int64 to Int32

[CarloLucibello]

Is there any particular reason for downcasting Float64 to Float32 but not Int64 to Int32? Should this be made more consistent?

julia> Float64[1, 2] |> cu
2-element CuArray{Float32, 1, CUDA.Mem.DeviceBuffer}:
 1.0
 2.0

julia> Int64[1, 2] |> cu
2-element CuArray{Int64, 1, CUDA.Mem.DeviceBuffer}:
 1
 2

Sorry if this has been already asked, it's hard to search for this specific issue.

[maleadt]

This is intended. Only Float32 vs Float64 manifests in a great performance difference, so integers are left alone. If your GPU behaves differently, perform the conversion yourself.

Ref JuliaGPU/CuArrays.jl#576