[Bug target/81813] Inefficient stack pointer adjustment

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81813

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There are a 3 places where the 
        call    lock_acquire
        call    debug_lockdep_rcu_enabled
        movq    32(%rsp), %rax
        popq    %rdx

Pattern exists and in GCC 7-8, only one of the 3 has the expanded pop for some
reason.