> On Apr 4, 2019, at 1:09 PM, Gary Zibrat via Groups.Io > <gzibrat=google....@groups.io> wrote: > > It seems like the "-mno-mmx -msoft-float -mno-implicit-float" part of the > flags should be enough to handle that now. > Is it ok to take -mno-sse out (in my local branch) for new versions of clang > without having to worry about silent failures? > Since EFIAPI uses the windows ABI, it should be ok to use XMM registers for > integer operations. > '
Gary, Conceptually it should be OK. But obviously no one has tested it :). Thanks, Andrew Fish > On Thu, Apr 4, 2019 at 1:00 PM Andrew Fish <af...@apple.com > <mailto:af...@apple.com>> wrote: > Gary, > > The edk2 is freestanding UEFI firmware and the runtime does not support > floating point exceptions. > > I think a long time ago there was an optimization bug and the -mno-sse fixed > it. > > The UEFI x64 ABI is Windows like and not Sys V like. > > Thanks, > > Andrew Fish > >> On Apr 4, 2019, at 10:13 AM, Gary Zibrat via Groups.Io >> <gzibrat=google....@groups.io <mailto:gzibrat=google....@groups.io>> wrote: >> >> Does anyone know why -mno-sse is specified on Clang x64? >> https://github.com/tianocore/edk2/commit/6f756db5ea057ff10dd168c7627163cec046a3d9 >> >> <https://github.com/tianocore/edk2/commit/6f756db5ea057ff10dd168c7627163cec046a3d9> >> There doesn't seem to be a corresponding flag for other compilers. >> >> I ask because a commit in LLVM breaks compilation of EDK2: >> https://reviews.llvm.org/rL357317#change-QSW9B7DqCGUI >> <https://reviews.llvm.org/rL357317#change-QSW9B7DqCGUI> > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#82): https://edk2.groups.io/g/devel/message/82 Mute This Topic: https://groups.io/mt/30900149/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
