[GHC] #6104: Regression: space leak in HEAD vs. 7.4

[GHC]

#6104: Regression: space leak in HEAD vs. 7.4
---------------------------------+------------------------------------------
    Reporter:  simonmar          |       Owner:  simonpj                     
        Type:  bug               |      Status:  new                         
    Priority:  highest           |   Milestone:  7.6.1                       
   Component:  Compiler          |     Version:  7.5                         
    Keywords:                    |          Os:  Unknown/Multiple            
Architecture:  Unknown/Multiple  |     Failure:  Compile-time performance bug
  Difficulty:  Unknown           |    Testcase:                              
   Blockedby:                    |    Blocking:                              
     Related:                    |  
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Comment(by simonpj@…):

 commit cd627bcfda713efa63b7f5290c84a5077f4976f9
 {{{
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Fri Jul 20 20:07:51 2012 +0100

     Do calcUnfoldingGuidance on the *non* occ-analysed RHS

     See Note [Calculate unfolding guidance on the non-occ-anal'd
 expression]
     This makes a big difference to residency (530M vs over 800M when
 compiling
     Cabal).

     This fixes the majority of the regression in Trac #6104

  compiler/coreSyn/CoreUnfold.lhs |   79
 +++++++++++++++++++++++++-------------
  1 files changed, 52 insertions(+), 27 deletions(-)
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6104#comment:11>
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