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Diffstat (limited to 'gcc/tree-loop-linear.c')
| -rw-r--r-- | gcc/tree-loop-linear.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/tree-loop-linear.c b/gcc/tree-loop-linear.c index bf353e5..c648ef7 100644 --- a/gcc/tree-loop-linear.c +++ b/gcc/tree-loop-linear.c @@ -178,6 +178,9 @@ try_interchange_loops (lambda_trans_matrix trans, unsigned int nb_deps_not_carried_by_i, nb_deps_not_carried_by_j; struct data_dependence_relation *ddr; + if (VEC_length (ddr_p, dependence_relations) == 0) + return trans; + /* When there is an unknown relation in the dependence_relations, we know that it is no worth looking at this loop nest: give up. */ ddr = VEC_index (ddr_p, dependence_relations, 0); |