[PATCH 0/3] Resubmit of Sparc T3/T4 patches.

[Torbjorn Granlund]

David Miller <davem at davemloft.net> writes:

  From: Torbjorn Granlund <tg at gmplib.org>
  Date: Tue, 05 Mar 2013 23:27:45 +0100
  
  > David Miller <davem at davemloft.net> writes:
  > 
  >   diff --git a/mpn/sparc64/ultrasparct3/mul_1.asm b/mpn/sparc64/ultrasparct3/mul_1.asm
  >   index df52647..6a3f193 100644
  >   --- a/mpn/sparc64/ultrasparct3/mul_1.asm
  >   +++ b/mpn/sparc64/ultrasparct3/mul_1.asm
  >   @@ -50,8 +50,7 @@ L(top):
  >    	umulxhi	%o4, v0, %o4
  >    	addcc	%o5, %g3, %g3
  >    	stx	%g3, [rp-16]
  >   -	addxc	%g0, %g2, %o5
  >   -	addcc	%o5, %g1, %g1
  >   +	addxccc	%g2, %g1, %g1
  >    	addxc	%g0, %o4, %o5
  >    	brgz	n, L(top)
  >    	 stx	%g1, [rp-8]
  >   
  > You should keep carry alive around the loop.  Both "addxc g0" should be
  > removed.  Then you'll need to use addxccc after final_one.
  
  Yes, that's the next level of simpifying this, I'll play with that
  after my commute home.
  
This should have the right instructions.  Scheduling might be needed.
Obviously untested.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: mul_1.asm
Type: application/octet-stream
Size: 1682 bytes
Desc: not available
URL: <http://gmplib.org/list-archives/gmp-devel/attachments/20130305/f7f61773/attachment.obj>
-------------- next part --------------

-- 
Torbj?rn