A perhaps silly question, *should* ghc-prim be built with i386 or i686?
On Thu, Jul 17, 2014 at 8:33 AM, Niklas Larsson <metanik...@gmail.com> wrote: > I just found exactly the same thing! Well, I used i686 instead. > > Sounds like it's worthwhile to see if this is limited to ghc-prim or if > there's more stuff that's built with i386. > > > 2014-07-17 8:21 GMT+02:00 Páli Gábor János <pali.ga...@gmail.com>: > >> 2014-07-17 0:51 GMT+02:00 Páli Gábor János <pali.ga...@gmail.com>: >> > 2014-07-17 0:47 GMT+02:00 Niklas Larsson <metanik...@gmail.com>: >> >> I hope they can just be done away with at the source, that is to make >> >> gcc >> >> generate the assembly primitives. GHC should already be built with >> >> i686, but >> >> does that reach ghc-prim? >> > >> > This depends on GCC -- if no -march=XXX is explicitly set, I guess it >> > will take its default, which may vary platform by platform. >> >> All right, I have finally got a Windows (x64) machine and installed >> the msys2 environment by the GHC wiki [1]. This has GCC 4.5.2 (as >> Niklas wrote earlier), where the default -march is i386. You should >> see this line when trying to compile Johan's test program with the -v >> flag set: >> >> COLLECT_GCC_OPTIONS= ... '-v' '-mtune=i386' '-march=i386' >> >> With the -march=i586 flag explicitly set in the command line, no >> __sync_fetch_and_add_n() calls are generated. >> >> [1] >> https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows/MSYS2 > > _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://www.haskell.org/mailman/listinfo/ghc-devs