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From: Junio C Hamano <gitster@pobox.com>
To: "René Scharfe" <l.s.r@web.de>
Cc: Git List <git@vger.kernel.org>
Subject: Re: [PATCH 00/10] typed sort of linked lists
Date: Sun, 17 Jul 2022 15:31:18 -0700	[thread overview]
Message-ID: <xmqqk08bv0ax.fsf@gitster.g> (raw)
In-Reply-To: <4d7cd286-398e-215c-f2bd-aa7e8207be4f@web.de> ("René Scharfe"'s message of "Sat, 16 Jul 2022 18:50:02 +0200")

René Scharfe <l.s.r@web.de> writes:

> It starts by making llist_mergesort() leaner without reducing its
> performance:
>
>   mergesort: unify ranks loops
>   mergesort: tighten merge loop
>
> This matters for the next step, which creates the macro version of
> that function:
>
>   mergesort: add macros for typed sort of linked lists
>
> The next two patches show the impact of using the macro on performance
> and object text size of the test helper:
>
>   test-mergesort: use DEFINE_LIST_SORT_DEBUG
>   test-mergesort: use DEFINE_LIST_SORT
>
> Then all llist_mergesort() callers get converted:
>
>   blame: use DEFINE_LIST_SORT
>   commit: use DEFINE_LIST_SORT
>   fetch-pack: use DEFINE_LIST_SORT
>   packfile: use DEFINE_LIST_SORT
>
> ... and the final patch removes the function which has become unused:
>
>   mergesort: remove llist_mergesort()

A nicely presented coherent story that results in an overall code
reduction.  Thanks for a pleasant read.

Will queue.


>  Makefile                  |   1 -
>  blame.c                   |  30 ++++-------
>  commit.c                  |  20 +++----
>  fetch-pack.c              |   8 +++
>  mergesort.c               |  84 -----------------------------
>  mergesort.h               | 108 ++++++++++++++++++++++++++++++++++----
>  packfile.c                |  18 ++-----
>  remote.c                  |  22 --------
>  remote.h                  |   2 -
>  t/helper/test-mergesort.c |  34 +++---------
>  t/perf/p0071-sort.sh      |   4 +-
>  t/t0071-sort.sh           |   2 +-
>  12 files changed, 134 insertions(+), 199 deletions(-)
>  delete mode 100644 mergesort.c
>
> --
> 2.37.1

  parent reply	other threads:[~2022-07-17 22:31 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-16 16:50 [PATCH 00/10] typed sort of linked lists René Scharfe
2022-07-16 16:52 ` [PATCH 01/10] mergesort: unify ranks loops René Scharfe
2022-07-16 16:53 ` [PATCH 02/10] mergesort: tighten merge loop René Scharfe
2022-07-16 16:54 ` [PATCH 03/10] mergesort: add macros for typed sort of linked lists René Scharfe
2022-07-16 16:56 ` [PATCH 04/10] test-mergesort: use DEFINE_LIST_SORT_DEBUG René Scharfe
2022-07-16 16:57 ` [PATCH 05/10] test-mergesort: use DEFINE_LIST_SORT René Scharfe
2022-07-16 16:58 ` [PATCH 06/10] blame: " René Scharfe
2022-07-16 16:59 ` [PATCH 07/10] commit: " René Scharfe
2022-07-16 16:59 ` [PATCH 08/10] fetch-pack: " René Scharfe
2022-07-16 17:01 ` [PATCH 09/10] packfile: " René Scharfe
2022-07-16 17:02 ` [PATCH 10/10] mergesort: remove llist_mergesort() René Scharfe
2022-07-17 22:31 ` Junio C Hamano [this message]
2022-07-25 18:52   ` [PATCH 00/10] typed sort of linked lists Junio C Hamano
2022-07-25 20:35     ` Derrick Stolee
2022-07-25 20:49       ` Junio C Hamano

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