[PATCH 1 of 5] phases: change phase command change detection

[Pierre-Yves David]

On 10/09/2014 12:26 PM, Durham Goode wrote:
>
> On 10/9/14 12:22 PM, Durham Goode wrote:
>> # HG changeset patch
>> # User Durham Goode <durham at fb.com>
>> # Date 1412706697 25200
>> #      Tue Oct 07 11:31:37 2014 -0700
>> # Node ID 21386e638281d3fe94138c5fb8ea6f6d7aa3a8cd
>> # Parent  a1eb21f5caea4366310e32aa85248791d5bbfa0c
>> phases: change phase command change detection
>>
> This is the first of 3 series that will make phase calculations lazy,
> and redo computehidden calculations to have a better big O. The sum
> total of which will shave several hundred milliseconds off of various
> commands when there are hidden commits in large repos.
>
> This first series doesn't introduce any performance wins, but puts bits
> in place for the next series.

I'm planning to look at this soon™

-- 
Pierre-Yves David