https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87370
--- Comment #10 from trashyankes at wp dot pl ---
(In reply to H.J. Lu from comment #9)
> Fixed for GCC 9, GCC 8.3 and GCC 7.4.
One question, I look on test case and see:
```
f1():
xor eax, eax
xor edx, edx
ret
f2():
push rbp
xor eax, eax
xor edx, edx
mov rbp, rsp
and rsp, -64
sub rsp, 8
leave
ret
f3():
xor eax, eax
xor edx, edx
ret
```
Why `f2` have `push` there? Isn't this co kind of stack alignment? but for what
point is it there? Clang do not have that.
