[GHC] #2159: Use a more efficient representation than [DynFlag]

[GHC]

#2159: Use a more efficient representation than [DynFlag]
-------------------------------------+-------------------------------------
        Reporter:  igloo             |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  lowest            |            Milestone:
       Component:  Compiler          |              Version:  6.8.2
      Resolution:  fixed             |             Keywords:
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 simonpj):

 Great!   Bring it on!

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2159#comment:23>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler