[GHC] #7258: Compiling DynFlags is jolly slow

GHC ghc-devs at haskell.org
Thu Oct 26 13:27:31 UTC 2017


#7258: Compiling DynFlags is jolly slow
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                Owner:  simonpj
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.6.1
      Resolution:                    |             Keywords:  deriving-perf
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by tdammers):

 Replying to [comment:63 simonpj]:
 > Interesting.  I can't tell whether that's as non-linear as the runtime,
 but the bad cases are clearly big!
 >
 > What happens to the size of Core? (Neglect types and coercions which are
 erased.)
 >
 > And finally does the Core-to-Cmm size ratio go up?

 I'll check that next, unfortunately this means I have to run all those
 examples again...

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7258#comment:65>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler


More information about the ghc-tickets mailing list