June 19, 2014
https://issues.dlang.org/show_bug.cgi?id=12949

          Issue ID: 12949
           Summary: Project compilation time increased by 64% for last
                    half year
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: DMD
          Assignee: nobody@puremagic.com
          Reporter: verylonglogin.reg@gmail.com

I update dmd+phobos two or three times a year. Recent update changed my project compilation time from 11 sec to 18 sec (+64%).

I'm not sure, but previous update probably changed it from 8 sec to 11 sec which was still acceptable. Looks like we finally have twice slower compilation time than year ago and still slowing down. Not sure is it a compiler or Phobos changes.

IMO we should either fix compilation time (I have no idea how be the way) or inform D users compilation time constantly increases so they can account it deciding to update or stay with an old version.

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