jhuber6 added a comment. In D120353#3338718 <https://reviews.llvm.org/D120353#3338718>, @ABataev wrote:
> In D120353#3338647 <https://reviews.llvm.org/D120353#3338647>, @jhuber6 wrote: > >> But the main reason I made this patch is for interoperability. Without this >> if you want to call a CUDA function from the OpenMP device you'd need a >> variant and a dummy implementation. If you don't write a dummy >> implementation you'll get a linker error, if you don't use a variant you'll >> override the CUDA function. > > Ah, ok, I see. How is supposed to be used? In Cuda code or in plain C/C++ > code? I haven't finalized the implementation, but the basic support I've tested was calling a `__device__` function compiled from another file with OpenMP, with this patch the source files would look like this for example. I think the inverse would also be possible given some code on the CUDA side. Calling CUDA kernels would take some extra work. __device__ int cuda() { return 0; } int cuda(void); #pragma omp declare target device_type(nohost) to(cuda) int main() { int x = 1; #pragma omp target map(from : x) x = cuda(); return x; } Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D120353/new/ https://reviews.llvm.org/D120353 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
