Hi Uros,
Thank you for such a detailed explanation. I'll study it.
Regards,
Vladimir
2011/7/20 Uros Bizjak :
> Hello!
>
>> > ? ? ? ?* a/gcc/gcse.c (alloc_gcse_mem): Added code to run in PRE2.
>>
>> And this is necessary because...???
>>
>> Why not just make it a separate pass in ix86-reorg that
Hi Steven,
I need a separate pass because the transformation on vzeroupper
redandancy elemination must be performed when reload is completed.
I think it is possible to make it as a separate pass in ix86-reorg if
the phase works after reload.
Thaks,
Vladimir
2011/7/19 Steven Bosscher :
>>
Hello!
> > ? ? ? ?* a/gcc/gcse.c (alloc_gcse_mem): Added code to run in PRE2.
>
> And this is necessary because...???
>
> Why not just make it a separate pass in ix86-reorg that uses LCM? Look at
> mode switching for an example.
I was also expecting that vzeroupper would be inserted in the same
> * a/gcc/gcse.c (alloc_gcse_mem): Added code to run in PRE2.
And this is necessary because...???
Why not just make it a separate pass in ix86-reorg that uses LCM? Look
at mode switching for an example.
Ciao!
Steven
