https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100041
--- Comment #9 from mss at tutanota dot de --- > To my knowledge -march=native on my Core2 Duo T8100 is enabled by default, > so I have it added to compile a native-like LLVM for it from another > computer. I meant to say that -m96bit-long-double is enabled by -march=native on the T8100.