#8922: GHC unnecessarily sign/zero-extends C call arguments -------------------------------------+---------------------------------- Reporter: simonmar | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler (NCG) | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 (amd64) Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #7684 -------------------------------------+---------------------------------- Comment (by simonmar): My reading of it was that extending in the caller is not strictly necessary but is done as an optimisation to avoid partial register stalls. Maybe that means we ought to be doing it too - that's not clear to me. I'm sure it's not *always* an optimisation. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8922#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler