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> 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 (#80): https://edk2.groups.io/g/devel/message/80 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] -=-=-=-=-=-=-=-=-=-=-=-
