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merge-ort: store filepairs and filespecs in our mem_pool

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For the testcases mentioned in commit 557ac0350d ("merge-ort: begin
performance work; instrument with trace2_region_* calls", 2020-10-28),
this change improves the performance as follows:

                            Before                  After
    no-renames:       198.1 ms ±  2.6 ms     198.5 ms ±  3.4 ms
    mega-renames:     715.8 ms ±  4.0 ms     679.1 ms ±  5.6 ms
    just-one-mega:    276.8 ms ±  4.2 ms     271.9 ms ±  2.8 ms

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren
2021-07-30 11:47:42 +00:00
committed by Junio C Hamano
parent a8791ef649
commit f239fff4c1
3 changed files with 19 additions and 17 deletions
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diffcore.h
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@@ -181,6 +181,7 @@ void partial_clear_dir_rename_count(struct strmap *dir_rename_count);
void diffcore_break(struct repository *, int);
void diffcore_rename(struct diff_options *);
void diffcore_rename_extended(struct diff_options *options,
struct mem_pool *pool,
struct strintmap *relevant_sources,
struct strintmap *dirs_removed,
struct strmap *dir_rename_count,