[GHC] #9630: compile-time performance regression (probably due to Generics)

[GHC]

#9630: compile-time performance regression (probably due to Generics)
-------------------------------------+-------------------------------------
        Reporter:  hvr               |                   Owner:  simonpj
            Type:  bug               |                  Status:  new
        Priority:  high              |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.9
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #9583, #10293     |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by goldfire):

 Michal describes how he got the numbers pasted in comment:12:

 build GHC HEAD/7.8.4 with build flavor `prof` then get the haskell-src-
 exts sources, install the dependencies and finally add `+RTS -p -RTS` to
 the cabal file and compile it, the resulting `ghc.prof` contains the
 profiling information.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9630#comment:14>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler