D1621: transaction: encodes tuples in changes['phases'] as 4 bit ints

[joerg.sonnenberger (Joerg Sonnenberger)]

joerg.sonnenberger added a comment.


  This version should be committable. It introduces the necessary API for isolating further changes and gives a small improvement already. I'll be looking at provider a memory and time efficient sparce vector next, that's where the real benefits will be.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1621

To: joerg.sonnenberger, #hg-reviewers, quark
Cc: yuja, quark, mercurial-devel