[GHC] #7460: Double literals generated bad core

[GHC]

#7460: Double literals generated bad core
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    Reporter:  tibbe             |       Owner:                         
        Type:  bug               |      Status:  new                    
    Priority:  normal            |   Milestone:                         
   Component:  Compiler          |     Version:  7.4.2                  
    Keywords:                    |          Os:  Unknown/Multiple       
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:  Unknown           |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
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Comment(by simonpj):

 Johan, can you drive this ticket to conclusion?

 Is the Right Thing to implement a `word2Double#` primitive? And
 `word2Float#` I guess.  What exactly does it do?  Just treat the word as a
 unsigned integer, thus behaving just like `int2Double#` (at least as I
 understand it)?

 If so why not do precisely that, rather than use workarounds? Presuambly
 the code generators would need to be educated.

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7460#comment:5>
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