On Wed, Aug 15, 2012 at 12:58 PM, Yuri Rumyantsev wrote:
> I send you new patch with fixed space/tab alignments.
>
> About your comment.
>
> It is more optimal to put adding of constant before adding of the
> register only for case when 3 instructions must be generated to split
> lea. In all othe
Hi Uros,
I send you new patch with fixed space/tab alignments.
About your comment.
It is more optimal to put adding of constant before adding of the
register only for case when 3 instructions must be generated to split
lea. In all other cases it does not matter and I left code
unchangeable.
Bes
On Tue, Aug 14, 2012 at 3:35 PM, Yuri Rumyantsev wrote:
> Uros,
>
> Let me try to explain you why I used such code duplication:
>
> Here we have a common case of LEA with 3 different registers - r0
> (target), r1(base), r2(index) and possible offset.
> To get the better scheduling we first try to
Uros,
Let me try to explain you why I used such code duplication:
Here we have a common case of LEA with 3 different registers - r0
(target), r1(base), r2(index) and possible offset.
To get the better scheduling we first try to determine what register
is prefirable for inititial setting - r1 or r
On Tue, Aug 14, 2012 at 2:28 PM, Yuri Rumyantsev wrote:
> Thanks a lot forr your comments.
>
> I prepared new patch and ChangeLog. Testing of x32 is in progress.
>
> It it OK for trunk?
>
> 2012-08-14 Yuri Rumyantsev
>
> * config/i386/i386-protos.h (ix86_split_lea_for_addr) : Add
>
Hi Uros,
Thanks a lot forr your comments.
I prepared new patch and ChangeLog. Testing of x32 is in progress.
It it OK for trunk?
2012-08-14 Yuri Rumyantsev
* config/i386/i386-protos.h (ix86_split_lea_for_addr) : Add
additional argument.
* config/i386/i386.md (ix86_s
Hello!
> It is known that LEA splitting is one of the most critical problems
> for Atom processors and changes try to improve it through:
> 1. More aggressive Lea splitting – do not perform splitting if
> only split cost exceeds AGU stall .
> 2. Reordering splitting instructions to get
