cvs commit: fptools/ghc/compiler/deSugar DsCCall.lhs

[Simon Marlow]

simonmar    2001/10/16 03:01:13 PDT

  Modified files:
    ghc/compiler/deSugar DsCCall.lhs 
  Log:
  Explicitly sign- or zero-extend the result of a ccall up to the word
  size if necessary.  Recent discussion on
  glasgow-haskell-users@haskell.org suggests that this is the
  responsibility of the caller rather than the callee.
  
  We do it by wrapping the result in narrow{8,16,32}{Int,Word}# as
  appropriate, at desugaring time, because this way we only have to do
  it once instead of once per backend.  Furthermore the narrowing is
  exposed to the simplifier which is generally a good thing.
  
  Revision  Changes    Path
  1.57      +28 -5     fptools/ghc/compiler/deSugar/DsCCall.lhs