[PATCH] Enhance reload_cse_move2add

[Paolo Bonzini]

On 07/07/2010 07:02 PM, Bernd Schmidt wrote:
> On 07/02/2010 01:59 PM, Paolo Bonzini wrote:
>> On 07/02/2010 12:58 PM, Jie Zhang wrote:
>>> 168.wupwise            1260       1232       -2.22%
>>> 189.lucas              1406       1380       -1.85%
>>
>> Lucas is insanely dependent on register allocation and scheduling.  With
>> -fweb and -frename-registers both disabled at -O2
>
> This reminds me.  I committed a number of regrename speedup patches
> earlier this year - does anyone think it would be a good idea to add
> that to -O2 now?

Definitely on i686, since it disables pre-regalloc scheduling.  You 
cannot get decent scheduling there without regrename.

Paolo