1for (int c1 = 1; c1 <= M; c1 += 1) {
2 S1(c1);
3 for (int c2 = c1 + 1; c2 <= M; c2 += 1)
4 S4(c1, c2);
5}
6for (int c0 = 1; c0 < 3 * M - 1; c0 += 3) {
7 S3((c0 + 2) / 3);
8 for (int c1 = (c0 + 5) / 3; c1 <= M; c1 += 1) {
9 S6((c0 + 2) / 3, c1);
10 for (int c4 = (c0 + 5) / 3; c4 < c1; c4 += 1)
11 S5(c4, c1, (c0 + 2) / 3);
12 }
13 for (int c1 = (c0 + 5) / 3; c1 <= M; c1 += 1)
14 S2(c1, (c0 + 2) / 3);
15}
16

source code of polly/lib/External/isl/test_inputs/codegen/cloog/cholesky2.c