diff options
Diffstat (limited to 'revision.c')
| -rw-r--r-- | revision.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/revision.c b/revision.c index cf620c6b36..71e62d8312 100644 --- a/revision.c +++ b/revision.c @@ -1970,6 +1970,22 @@ static struct merge_simplify_state *locate_simplify_state(struct rev_info *revs, return st; } +static void remove_treesame_parents(struct commit *commit) +{ + struct commit_list **pp, *p; + + pp = &commit->parents; + while ((p = *pp) != NULL) { + struct commit *parent = p->item; + if (parent->object.flags & TREESAME) { + *pp = p->next; + free(p); + continue; + } + pp = &p->next; + } +} + static struct commit_list **simplify_one(struct rev_info *revs, struct commit *commit, struct commit_list **tail) { struct commit_list *p; @@ -2022,10 +2038,18 @@ static struct commit_list **simplify_one(struct rev_info *revs, struct commit *c if (revs->first_parent_only) break; } - if (!revs->first_parent_only) - cnt = remove_duplicate_parents(commit); - else + + if (revs->first_parent_only) { cnt = 1; + } else { + /* + * A merge with a tree-same parent is useless + */ + if (commit->parents && commit->parents->next) + remove_treesame_parents(commit); + + cnt = remove_duplicate_parents(commit); + } /* * It is possible that we are a merge and one side branch |