PATCH: fix clang to emit correct addrspacecast for CUDA

[Peter Collingbourne]

On Fri, Mar 21, 2014 at 11:20:55AM -0700, Jingyue Wu wrote:
> diff --git a/test/CodeGenCUDA/address-space-conversion.cu b/test/CodeGenCUDA/address-space-conversion.cu
> new file mode 100644
> index 0000000..9b9ae43
> --- /dev/null
> +++ b/test/CodeGenCUDA/address-space-conversion.cu

Can these test cases live in address-spaces.cu? They are basically testing
the same thing.

Otherwise, LGTM.

Thanks,
-- 
Peter