llvm-project/libclc/r600/lib/workitem/get_group_id.cl

#include <clc/clc.h>

_CLC_DEF _CLC_OVERLOAD uint get_group_id(uint dim) {
  switch (dim) {
  case 0:
    return __builtin_r600_read_tgid_x();
  case 1:
    return __builtin_r600_read_tgid_y();
  case 2:
    return __builtin_r600_read_tgid_z();
  default:
    return 1;
  }
}