1419     PetscInt              *lidxs, *lgidxs, *newgidxs;  in MatCreateSubMatrix_IS()  local
1439     PetscCall(PetscLayoutMapLocal(mat->rmap, m, idxs, &ll, &lidxs, &lgidxs));  in MatCreateSubMatrix_IS()
1442     for (i = 0; i < ll; i++) matis->sf_rootdata[lidxs[i]] = lgidxs[i] + 1;  in MatCreateSubMatrix_IS()
1443     PetscCall(PetscFree(lidxs));  in MatCreateSubMatrix_IS()
1450     PetscCall(PetscMalloc1(newloc, &lidxs));  in MatCreateSubMatrix_IS()
1453         lidxs[newloc]      = i;  in MatCreateSubMatrix_IS()
1462     PetscCall(ISCreateGeneral(comm, newloc, lidxs, PETSC_OWN_POINTER, &newmatis->getsub_ris));  in MatCreateSubMatrix_IS()
1473       PetscCall(PetscLayoutMapLocal(mat->cmap, n, idxs, &ll, &lidxs, &lgidxs));  in MatCreateSubMatrix_IS()
1476       for (i = 0; i < ll; i++) matis->csf_rootdata[lidxs[i]] = lgidxs[i] + 1;  in MatCreateSubMatrix_IS()
1477       PetscCall(PetscFree(lidxs));  in MatCreateSubMatrix_IS()
1484       PetscCall(PetscMalloc1(newloc, &lidxs));  in MatCreateSubMatrix_IS()
1487           lidxs[newloc]      = i;  in MatCreateSubMatrix_IS()
1495       PetscCall(ISCreateGeneral(comm, newloc, lidxs, PETSC_OWN_POINTER, &newmatis->getsub_cis));  in MatCreateSubMatrix_IS()