On Tue, Jun 20, 2017 at 2:17 PM, Uros Bizjak <ubiz...@gmail.com> wrote: > On Tue, Jun 20, 2017 at 2:13 PM, Florian Weimer <fwei...@redhat.com> wrote: >> On 06/20/2017 01:10 PM, Uros Bizjak wrote: >> >>> 74,99% a.out a.out [.] test_or >>> 12,50% a.out a.out [.] test_movb >>> 12,50% a.out a.out [.] test_movl >> >> Could you try notl/notb/negl/negb as well, please? > > These all have the same (long) runtime as test_or.
Perhaps we can use "testb $0, %0"? It doesn't write to the memory, but otherwise has the same runtime as movb/movl. Uros.
