[GHC] #7796: improve dead code elimination in CorePrep

[GHC]

#7796: improve dead code elimination in CorePrep
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Reporter:  nfrisby           |          Owner:  nfrisby         
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.6.2             |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:  #4962 #5433     
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Comment(by nicolas.frisby@…):

 commit c7d80c6524390551b64e9c1d651e1a03ed3c7617
 {{{
 Author: Nicolas Frisby <nicolas.frisby at gmail.com>
 Date:   Wed Mar 27 20:25:28 2013 +0000

     improve dead code elimination in CorePrep (fixes #7796)

  compiler/coreSyn/CorePrep.lhs    |   72
 ++++++--------------------------------
  compiler/simplCore/OccurAnal.lhs |   38 +++++++++++++-------
  2 files changed, 36 insertions(+), 74 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7796#comment:2>
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