[GHC] #7258: Compiling DynFlags is jolly slow

[GHC]

#7258: Compiling DynFlags is jolly slow
---------------------------------+------------------------------------------
    Reporter:  simonpj           |       Owner:  igloo           
        Type:  bug               |      Status:  new             
    Priority:  normal            |   Milestone:  7.8.1           
   Component:  Compiler          |     Version:  7.6.1           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
---------------------------------+------------------------------------------

Comment(by igloo):

 {{{
     Fri Oct 19 20:32 2012 Time and Allocation Profiling Report  (Final)

        ghc-stage2 +RTS -p -h -RTS -B/home/ian/ghc/git/ghc/inplace/lib
 -fforce-recomp -O -c W2.hs

     total time  =       76.26 secs   (76258 ticks @ 1000 us, 1 processor)
     total alloc = 45,073,993,600 bytes  (excludes profiling overheads)

 COST CENTRE       MODULE      %time %alloc

 OccAnal           SimplCore    49.7   45.3
 CoreTidy          HscMain      22.3   31.8
 SimplTopBinds     SimplCore    12.9    9.9
 pprNativeCode     AsmCodeGen    2.0    1.8
 RegAlloc          AsmCodeGen    1.9    2.0
 sink2             CmmPipeline   1.5    1.8
 StgCmm            HscMain       1.0    0.8
 occAnalBind.assoc OccurAnal     1.0    1.0
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7258#comment:4>
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