#8949: switch -msse2 to be on by default -------------------------------------+------------------------------------- Reporter: errge | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 (CodeGen) | Keywords: Resolution: | Architecture: x86 Operating System: Unknown/Multiple | Difficulty: Moderate (less Type of failure: Other | than a day) Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------- Comment (by simonmar): Replying to [comment:2 tibbe]:
I think we should, like LLVM, switch on -march=native by default and have people who want to build more portable binaries specify their target explicitly. This doesn't preclude turning on -msse2 by default of course.
I like `-march-native`, but I'm not convinced it should be the default. For GHC it will add minimal gain, in exchange for some very obscure crashes when someone forgets to turn it off when building a binary that might need to run on another machine. The Haskell way is correct but slow by default, and I think that's what we should do here. I think I'm less concerned about `-msse2`, because it will affect a lot fewer people. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8949#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler