[PATCH v2 05/10] merge-ort: support subtree shifting
From: Elijah Newren via GitGitGadget <hidden>
Date: 2021-03-09 06:25:38
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Elijah Newren <redacted> merge-recursive has some simple code to support subtree shifting; copy it over to merge-ort. This fixes t6409.12 under GIT_TEST_MERGE_ALGORITHM=ort. Signed-off-by: Elijah Newren <redacted> --- merge-ort.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/merge-ort.c b/merge-ort.c
index db46f496cb82..cfd956a3f435 100644
--- a/merge-ort.c
+++ b/merge-ort.c@@ -3416,6 +3416,23 @@ void merge_finalize(struct merge_options *opt, /*** Function Grouping: helper functions for merge_incore_*() ***/ +static struct tree *shift_tree_object(struct repository *repo, + struct tree *one, struct tree *two, + const char *subtree_shift) +{ + struct object_id shifted; + + if (!*subtree_shift) { + shift_tree(repo, &one->object.oid, &two->object.oid, &shifted, 0); + } else { + shift_tree_by(repo, &one->object.oid, &two->object.oid, &shifted, + subtree_shift); + } + if (oideq(&two->object.oid, &shifted)) + return two; + return lookup_tree(repo, &shifted); +} + static inline void set_commit_tree(struct commit *c, struct tree *t) { c->maybe_tree = t;
@@ -3543,6 +3560,13 @@ static void merge_ort_nonrecursive_internal(struct merge_options *opt, { struct object_id working_tree_oid; + if (opt->subtree_shift) { + side2 = shift_tree_object(opt->repo, side1, side2, + opt->subtree_shift); + merge_base = shift_tree_object(opt->repo, side1, merge_base, + opt->subtree_shift); + } + trace2_region_enter("merge", "collect_merge_info", opt->repo); if (collect_merge_info(opt, merge_base, side1, side2) != 0) { /*
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