http://d.puremagic.com/issues/show_bug.cgi?id=11250

           Summary: Compile time almost doubled
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: michal.minich@gmail.com


--- Comment #0 from Michal Minich <michal.minich@gmail.com> 2013-10-13 23:45:33 PDT ---
dmd 2.064 beta 1

Approximate timings
   28 seconds - dmd 2.063 + updated snn.lib
   52 seconds - dmd 2.064 beta 1

for compilation of vibed in VisualD, including deimos dependencies using parameters similar to

-lib -g -debug -w -property -X -Xf"x.json" -Isource -deps="x.dep" -of"x.lib" -map "x.map" -L/NOMAP

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Dmitry Olshansky <dmitry.olsh@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dmitry.olsh@gmail.com


--- Comment #1 from Dmitry Olshansky <dmitry.olsh@gmail.com> 2013-10-20 11:56:41 PDT ---
It looks a lot like a dup of http://d.puremagic.com/issues/show_bug.cgi?id=10866

Michal can you re-test with beta 2 of dmd 2.064?

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--- Comment #2 from Michal Minich <michal.minich@gmail.com> 2013-10-20 12:09:55 PDT ---
(In reply to comment #1)
> It looks a lot like a dup of http://d.puremagic.com/issues/show_bug.cgi?id=10866
> 
> Michal can you re-test with beta 2 of dmd 2.064?

With dmd 2.064 beta 2

Approximate timings
   28 seconds - dmd 2.063 + updated snn.lib
   9  seconds - dmd 2.064 beta 2

So the build time is now 3 times faster the 2.063 and 6 times faster than beta 1! If that is not another bug it is incredible! My test was building single lib file ,about 11 mb, which is the same size as with 2.063. What enhancement(s) is causing this speedups?

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Benjamin Thaut <code@benjamin-thaut.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |code@benjamin-thaut.de


--- Comment #3 from Benjamin Thaut <code@benjamin-thaut.de> 2013-10-20 12:19:01 PDT ---
If you now use visual studio to build dmd 2.064 you should be down to 4 seconds.

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--- Comment #4 from Dmitry Olshansky <dmitry.olsh@gmail.com> 2013-10-20 12:21:30 PDT ---
(In reply to comment #2)
> (In reply to comment #1)
> > It looks a lot like a dup of http://d.puremagic.com/issues/show_bug.cgi?id=10866
> > 
> > Michal can you re-test with beta 2 of dmd 2.064?
> 
> With dmd 2.064 beta 2
> 
> Approximate timings
>    28 seconds - dmd 2.063 + updated snn.lib
>    9  seconds - dmd 2.064 beta 2
> 
> So the build time is now 3 times faster the 2.063 and 6 times faster than beta 1! If that is not another bug it is incredible! My test was building single lib file ,about 11 mb, which is the same size as with 2.063. What enhancement(s) is causing this speedups?

Well there was some work on reducing interdependencies and a few steps taken to avoid parsing rarely used stuff in Phobos (specifically unicode tables).

Plus specifically for vibe.d there was this enhancement (unless you test with
the old version):
https://github.com/rejectedsoftware/vibe.d/pull/341

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--- Comment #5 from Michal Minich <michal.minich@gmail.com> 2013-10-20 12:43:29 PDT ---
(In reply to comment #4)

> Plus specifically for vibe.d there was this enhancement (unless you test with
> the old version):
> https://github.com/rejectedsoftware/vibe.d/pull/341

Well there was some work on reducing interdependencies and a few steps taken to avoid parsing rarely used stuff in Phobos (specifically unicode tables).

I was testing on latest release 0.7.17 - without the specific vibe.d enhancement; so the "some work" and "few steps" you are referring to seems to really pay off.

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Dmitry Olshansky <dmitry.olsh@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


--- Comment #6 from Dmitry Olshansky <dmitry.olsh@gmail.com> 2013-10-20 13:01:19 PDT ---
(In reply to comment #5)
> (In reply to comment #4)
> 
> > Plus specifically for vibe.d there was this enhancement (unless you test with
> > the old version):
> > https://github.com/rejectedsoftware/vibe.d/pull/341
> 
> Well there was some work on reducing interdependencies and a few steps taken to avoid parsing rarely used stuff in Phobos (specifically unicode tables).
> 
> I was testing on latest release 0.7.17 - without the specific vibe.d enhancement; so the "some work" and "few steps" you are referring to seems to really pay off.

I bet the compiler fix invlved still _did_ reduce the time. The pull for vibe was more of a workaround.

Anyhow the time is back to "normal" so I'm closing this.

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