diff options
Diffstat (limited to 'gcc/lambda-code.c')
| -rw-r--r-- | gcc/lambda-code.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/lambda-code.c b/gcc/lambda-code.c index 0b67231..dc656d3 100644 --- a/gcc/lambda-code.c +++ b/gcc/lambda-code.c @@ -2595,11 +2595,16 @@ lambda_transform_legal_p (lambda_trans_matrix trans, gcc_assert (LTM_COLSIZE (trans) == nb_loops && LTM_ROWSIZE (trans) == nb_loops); - /* When there is an unknown relation in the dependence_relations, we - know that it is no worth looking at this loop nest: give up. */ + /* When there are no dependences, the transformation is correct. */ + if (VEC_length (ddr_p, dependence_relations) == 0) + return true; + ddr = VEC_index (ddr_p, dependence_relations, 0); if (ddr == NULL) return true; + + /* When there is an unknown relation in the dependence_relations, we + know that it is no worth looking at this loop nest: give up. */ if (DDR_ARE_DEPENDENT (ddr) == chrec_dont_know) return false; |