Function hash_pair_combine

dnn/src/cuda/query_blocksize.cpp:12–14

namespace {

size_t hash_pair_combine(size_t x, size_t y) {
    return y + 0x9e3779b9 + (x << 6) + (x >> 2);
}

//! stupid committee has no pair hash. Let's do it for them
struct pairhash {