[GHC] #6135: Unboxed Booleans

[GHC]

#6135: Unboxed Booleans
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  Reporter:  benl              |          Owner:  jstolarek       
      Type:  feature request   |         Status:  patch           
  Priority:  normal            |      Milestone:  7.8.1           
 Component:  Compiler          |        Version:  7.4.1           
Resolution:                    |       Keywords:                  
        Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown      |     Difficulty:  Unknown         
  Testcase:                    |      Blockedby:                  
  Blocking:                    |        Related:  #605            
-------------------------------+--------------------------------------------

Comment(by jstolarek):

 I need advice regarding names of the modified primops. Right now we have
 `sameMutableArray#` primop returning a `Bool`. I was thinking that having
 a primop `sameMutableArray#` returning an `Int#` + having a wrapper
 `sameMutableArray` will be more elegant (because # at the end
 distinguishes built-in primops), but this will break people's code. I can
 follow approach used in patches created so far, that is change the name of
 the modified primop to `sameMutableArray$#` and reuse the name
 `sameMutableArray#` for wrapper, which will certainly break less code
 (people only need to import GHC.PrimWrappers) but seems a bit confusing.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6135#comment:72>
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