https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88959
--- Comment #1 from Daniel Fruzynski <bugzi...@poradnik-webmastera.com> --- I have found that this extra xor is not added when compiling with -O3 -march=sandybridge or -O3 -march=ivydybridge. However with -O3 -march=sandybridge/ivydybridge -mbmi it is added.
