https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412
--- Comment #20 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > This comment could be important: > > https://stackoverflow.com/questions/30928265/mingw64-is-incapable-of-32-byte- > stack-alignment-required-for-avx-on-windows- > x64?noredirect=1#comment86499640_30928265. As already said, MSVC does something completely different (it realigns the frame instead of the stack) and we cannot do that; the model must be Clang instead.