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

[David Miller]

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.

Thanks!