Improvements to powerpc32 asm code

[Mark Rodenkirch]

On Monday, June 2, 2003, at 07:55 PM, Kevin Ryde wrote:

> Mark Rodenkirch <mrodenkirch@wi.rr.com> writes:
>>
>>              mpn_add_n mpn_add_n_new
>> 1             21.1270      #10.0658
>> 2             13.0883       #7.0432
>> 3             10.0633       #5.7040
>
> I take it this is -C.  -CD is probably best for looking at cycles/limb
> loop speeds, since it cancels out fixed overheads.  A plain -c can be
> used to look at total times on small sizes.

Yes, that was -C.  Here are the -CD results if you are interested:

1           (21.1270)    (#10.0622)
2              5.0496       #4.0293
3              4.0124       #3.0227
4             #4.0166        8.0599
5             #4.0338        5.0142
6              4.0311       #4.0187
7             #4.0071        4.0165
8              4.0611       #0.0051
9             #3.9867        5.0392
10            #4.0239        4.0240
11             4.0514       #4.0152
12             4.0084       #0.0511
13            #4.0405        4.9908
14            #4.0185        4.0358
15             4.0095       #4.0084
16             4.0664       #0.0258
17            #4.0111        5.0238
18            #4.0169        4.0433
19             4.0598       #4.0142
20             3.9686       #0.0000
190            4.5698       #4.1600
191            3.8153       #3.7427
192            3.8598       #0.0938
193           #3.9814        4.8766
194            4.6123       #3.7899
195           #3.5529        4.3497
196            4.1587      #-0.0851
197           #4.2556        5.4088
198            3.7425       #3.3844
199           #3.8848        4.2380
200            4.4803       #0.0000
1990           7.2464       #5.8824
1991           7.2464       #6.5911
1992           7.2464      #-0.7087
1993          #0.0000        5.8824
1994          #0.0000        0.0000
1995           7.9923       #5.8824
1996           6.5004       #0.4902
1997          #1.7305        5.9524
1998          #5.5159        5.9524
1999          #0.0000        0.0000
2000           7.2464       #0.0000

I don't fully comprehend these values compared to -C, but I hope you 
find them useful.

--Mark