[GHC] #8457: -ffull-laziness does more harm than good

[GHC]

#8457: -ffull-laziness does more harm than good
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        Reporter:  errge             |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:  7.10.1
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Changes (by simonpj):

 * cc: bos@…, johan.tibell@… (added)


Comment:

 Thanks.

 A couple of `nofib` programs get a lot worse (eg `partsof` allocates 20x
 more), and the geometric mean of allocation I speculate that some of these
 extreme effects are because the programs have static data, but I'm not
 sure.  The question is whether "typical" GHC users will see things getting
 better or worse.

 I'd be happy to know what our GHC Performance Tsars think (or indeed
 anyone else).  Bryan, Johan: any views?

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8457#comment:7>
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