#7460: Double literals generated bad core
    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:                    |  

Comment(by tibbe):

 Replying to [comment:2 tibbe]:
 > Changing the use of `fromIntegral` to
 > {{{
 > word2Double x = D# (int2Double# (word2Int# x))
 > }}}
 > works around the issue in my case.

 Except that it doesn't always generate the correct value. The point
 remains though, we need an efficient `word2Double` conversion to be
 inserted into the core.

Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7460#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler

Glasgow-haskell-bugs mailing list

Reply via email to