[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked on ppc

2005-01-07 Thread steven at gcc dot gnu dot org 


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   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever Confirmed||1
   Last reconfirmed|-00-00 00:00:00 |2005-01-07 12:23:21
   date||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046

[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked on ppc

2005-01-06 Thread pinskia at gcc dot gnu dot org 


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   What|Removed |Added

   Severity|normal  |minor
   Priority|P2  |P3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046

[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked on ppc

2004-12-29 Thread dje at gcc dot gnu dot org 

--- Additional Comments From dje at gcc dot gnu dot org  2004-12-29 18:00 
---
Increasing the value of MOVE_RATIO and CLEAR_RATIO decreases SPEC 
performance.  The uses of the macro may be overloaded and confusing the cost 
model.  Or it could be harmed by register allocator and spilling.  But 
overall, the default values of MOVE_RATIO and CLEAR_RATIO based on movmemsi 
appear to be good.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046

[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked on ppc

2004-12-21 Thread pinskia at gcc dot gnu dot org 

--- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-22 
07:25 ---
One more thing I noticed is that this happens often in Ada, than anywhere else, 
even with the simpliest 
source to print out something.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046

[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked on ppc

2004-12-17 Thread pinskia at gcc dot gnu dot org 


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   What|Removed |Added

Summary|[4.0 Regression] MOVE_RATIO |[4.0 Regression] MOVE_RATIO
   |should be tweaked   |should be tweaked on ppc


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046

[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked

2004-12-16 Thread pinskia at gcc dot gnu dot org 


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   What|Removed |Added

   Target Milestone|--- |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046

[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked

2004-12-16 Thread dje at gcc dot gnu dot org 

--- Additional Comments From dje at gcc dot gnu dot org  2004-12-16 22:58 
---
I think it needs some experimentation to determine the best performance trade 
off.  I do not expect a value of 15 to be correct.  I would guess at something 
like

#define MOVE_RATIO (TARGET_STRING ? 2 : optimize_size ? 3 : 7)

as a good start.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046

[Bug target/19046] [4.0 Regression] MOVE_RATIO should be tweaked

2004-12-16 Thread dje at gcc dot gnu dot org 


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   What|Removed |Added

 CC||dje at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19046