Re: [PATCH] vsyscall: use __iter_div_u64_rem()

On Thu, Jul 11, 2019 at 5:28 AM Arnd Bergmann arnd@arndb.de wrote:

clang does not like an inline assembly with a "=q" contraint for a 64-bit output:

Seems like starting in GCC 7, GCC may not like it either: https://godbolt.org/z/UyBUfh it simply warns then proceeds with code gen. Another difference may come from when GCC vs Clang perform dead code elimination (DCE) vs semantic analysis.