[GHC] #1811: liberate case causes code duplication

[GHC]

#1811: liberate case causes code duplication
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  Reporter:  simonmar  |          Owner:  simonpj   
      Type:  bug       |         Status:  new       
  Priority:  normal    |      Milestone:  6.8 branch
 Component:  Compiler  |        Version:  6.6.1     
  Severity:  normal    |       Keywords:            
Difficulty:  Unknown   |             Os:  Unknown   
  Testcase:            |   Architecture:  Unknown   
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 The liberate-case pass (on with -O2) is causing code duplication in the
 definition of `hPutStr` in `GHC.IO`.

 This accounts for 10% of the 25% increase in binary sizes I'm seeing in
 6.8.1.  We'll be using `-fno-liberate-case` when building libraries for
 the distributions (it's already off in the default build, since the
 default `GhcLibHcOpts` uses `-O`).

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1811>
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