[Bug target/82221] internal compiler error: in print_reg, at config/i386/i386.c:17656

[jpoimboe at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82221

--- Comment #14 from Josh Poimboeuf <jpoimboe at redhat dot com> ---
(In reply to H.J. Lu from comment #13)
> (In reply to Josh Poimboeuf from comment #12)
> > I would like to clarify that most of the time, when we use "sp" in the
> > clobbers list, the stack does *not* need to be realigned.  And in those
> 
> Yes, stack alignment may be needed due to:
> 
> typedef struct {
>  u64 __attribute__((aligned(8))) counter;
> } atomic64_t;
> 
> with -mpreferred-stack-boundary=2.

Yes, in the above example that is true.  However there are many more cases in
the kernel where we want to use the "sp" clobbers, where stack alignment is not
needed.