message: [OPENMP][NVPTX]Revert __kmpc_shuffle_int64 to its original form.
  Summary:
  Use the original shuffle implementation for __kmpc_shuffle_int64 since
  default implementation uses the same implementation.
  Reviewers: gtbercea
  Subscribers: guansong, caomhin, openmp-commits
diff: @@ -76,17 +76,12 @@ EXTERN int32_t __kmpc_shuffle_int32(int32_t val, int16_t delta, int16_t size) {
  }
  EXTERN int64_t __kmpc_shuffle_int64(int64_t val, int16_t delta, int16_t size) {
  -#if defined(CUDART_VERSION) && CUDART_VERSION >= 9000
  - return __SHFL_DOWN_SYNC(0xFFFFFFFFFFFFFFFFLL, (long long)val, (unsigned)delta,
  - (int)size);
  -#else
  int lo, hi;
  asm volatile("mov.b64 {%0,%1}, %2;" : "=r"(lo), "=r"(hi) : "l"(val));
  hi = __SHFL_DOWN_SYNC(0xFFFFFFFF, hi, delta, size);
  lo = __SHFL_DOWN_SYNC(0xFFFFFFFF, lo, delta, size);
  asm volatile("mov.b64 %0, {%1,%2};" : "=l"(val) : "r"(lo), "r"(hi));
  return val;
  -#endif
  }
  static INLINE void gpu_regular_warp_reduce(void *reduce_data,
  