573   IS                 lis;  in PCGAMGProlongator_Classical_Standard()  local
579   PetscCall(ISCreateStride(PETSC_COMM_SELF, fe - fs, fs, 1, &lis));  in PCGAMGProlongator_Classical_Standard()
583     PetscCall(MatIncreaseOverlap(A, 1, &lis, 2));  in PCGAMGProlongator_Classical_Standard()
584     PetscCall(ISSort(lis));  in PCGAMGProlongator_Classical_Standard()
586     PetscCall(MatCreateSubMatrices(A, 1, &lis, &lis, MAT_INITIAL_MATRIX, &lAs));  in PCGAMGProlongator_Classical_Standard()
589     PetscCall(ISGetLocalSize(lis, &nl));  in PCGAMGProlongator_Classical_Standard()
591     PetscCall(ISGetIndices(lis, &lidx));  in PCGAMGProlongator_Classical_Standard()
593     PetscCall(ISRestoreIndices(lis, &lidx));  in PCGAMGProlongator_Classical_Standard()
627   PetscCall(ISGetIndices(lis, &gidx));  in PCGAMGProlongator_Classical_Standard()
785   PetscCall(ISRestoreIndices(lis, &gidx));  in PCGAMGProlongator_Classical_Standard()
788   PetscCall(ISDestroy(&lis));  in PCGAMGProlongator_Classical_Standard()