[PATCH 2/2] Optimize 64-bit mpn_add_N and mpn_sub_N for sparc T3 and later.
davem at davemloft.net
Thu Mar 7 07:06:55 CET 2013
From: Torbjorn Granlund <tg at gmplib.org>
Date: Thu, 07 Mar 2013 07:00:00 +0100
> Why doesn't your functions use the 'return' insns, btw?
They were expensive at one point, but I just checked and on T4 using
return appears to be quite cheap.
> PS. I have created a poor man's T3 with some m4 macros. This will allow
> me to test T3 code on an old v9 machine.
I'll test your routines with the obvious fix in a moment.
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