Speed up lpad() and rpad()

Title

CI (CFBot)

Summary

Stats (from CFBot)

Patch version: v5, Patch count: 3, First patch: +27−33, All patches: +218−44

Tags

Performance

Created

2026-09-23 17:10:55

Last modified

2026-09-23 17:10:58 (3 weeks ago)

Latest email

2026-10-03 05:27:34 (1 week ago)

Status

PG20-3 (2026-11-01 – 2026-11-30): Needs review

Target version

Authors

Sehrope Sarkuni (sehrope)

Reviewers

Nathan Bossart (bossartn) Become reviewer

Committer

Nathan Bossart (bossartn)

Links

Emails

Speed up lpad() and rpad() for one-byte padding strings: First at 2026-09-23 14:10:09 by Sehrope Sarkuni <sehrope at jackdb.com>
Latest at 2026-10-03 05:27:34 by shihao zhong <zhong950419 at gmail.com>
Latest attachment (nocfbot-pad-v5-review.txt) at 2026-09-25 01:24:54 from Manu <manuelreyesbravo at gmail.com>
    Attachment (nocfbot-pad-v5-review.txt) at 2026-09-25 01:24:54 from Manu <manuelreyesbravo at gmail.com> (Patch: No)
    Attachment (v5-0001-Factor-the-padding-loop-out-of-lpad-and-rpad.patch) at 2026-09-24 23:54:21 from Sehrope Sarkuni <sehrope at jackdb.com> (Patch: No)
    Attachment (v4-0001-Factor-the-padding-loop-out-of-lpad-and-rpad.patch) at 2026-09-23 22:51:14 from Sehrope Sarkuni <sehrope at jackdb.com> (Patch: No)
    Attachment (v2-0001-Copy-whole-repetitions-of-the-pad-string-at-once-.patch) at 2026-09-23 17:16:45 from Sehrope Sarkuni <sehrope at jackdb.com> (Patch: No)
    Attachment (v2-0001-Factor-the-padding-loop-out-of-lpad-and-rpad.patch) at 2026-09-23 17:09:08 from Nathan Bossart <nathandbossart at gmail.com> (Patch: No)
    Attachment (0001-Use-memset-for-one-byte-padding-in-lpad-and-rpad.patch) at 2026-09-23 14:10:09 from Sehrope Sarkuni <sehrope at jackdb.com> (Patch: No)

History

When	Who	What
2026-09-23 17:10:58	Nathan Bossart (bossartn)	Added bossartn as committer
2026-09-23 17:10:57	Nathan Bossart (bossartn)	Added bossartn as reviewer
2026-09-23 17:10:55	Nathan Bossart (bossartn)	Attached mail thread CAH7T-apj+pFg9bRkXVGfGejS2Uu4WzdMd7KoLKTW11mdsrt1Ew@mail.gmail.com
2026-09-23 17:10:55	Nathan Bossart (bossartn)	Created patch record