diff options
Diffstat (limited to 'gcc/tree-switch-conversion.cc')
| -rw-r--r-- | gcc/tree-switch-conversion.cc | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/tree-switch-conversion.cc b/gcc/tree-switch-conversion.cc index dea217a..bd4de96 100644 --- a/gcc/tree-switch-conversion.cc +++ b/gcc/tree-switch-conversion.cc @@ -1793,12 +1793,14 @@ bit_test_cluster::find_bit_tests (vec<cluster *> &clusters, int max_c) end up with as few clusters as possible. */ unsigned l = clusters.length (); - auto_vec<min_cluster_item> min; - min.reserve (l + 1); - gcc_checking_assert (l > 0); + if (l == 0) + return clusters.copy (); gcc_checking_assert (l <= INT_MAX); + auto_vec<min_cluster_item> min; + min.reserve (l + 1); + int bits_in_word = GET_MODE_BITSIZE (word_mode); /* First phase: Compute the minimum number of clusters for each prefix of the |