This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]

Re: ia64 performance regression


>   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
>     {
>       regs->array[i].may_not_optimize = 1;
>       regs->array[i].set_in_loop = 1;
>     }

I would guess that this is about not extending hard register lifetimes.
This looks like something that you want to make dependent on
SMALL_REGISTER_CLASSES and CLASS_LIKELY_SPILLED_P.
There could also be issues with fixed registers.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]