-
Christopher Dykes authored
Summary: HHVM uses this heavily in it's ARM JIT, so provide an implementation. With GCC & Clang this function is a no-op on x86_64 where the requirement doesn't exist, so do the same in the portability header. This doesn't include the Windows portability header on x64 specifically because it is a very heavy header and this is currently very lightweight. Reviewed By: yfeldblum Differential Revision: D4451032 fbshipit-source-id: 0af57448577635f9cd690ea9b09ce46a244191e1
cc0ca971