https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78034
--- Comment #5 from Pawel Sikora <pawel_sikora at zoho dot com> --- (In reply to Andrew Pinski from comment #3) > Also why are you using inline-asm here? Why can't you use the SSE > intrinsics? it's a 3rd-party crypto library which works for me with gcc-4.9. now with gcc-6.2 i've disabled this asm magic with -DCRYPTOPP_DISABLE_X86ASM. case closed :)