From: David Miller <da...@davemloft.net> Date: Tue, 02 Apr 2013 15:06:42 -0400 (EDT)
> With this corrected I tried dive_1.asm and several tests fail, I'll > try to figure out why. This turned out to be easy, you were using %o5 as a register for 'dinv' but this gets clobbered elsewhere in the code, using %o4 instead fixes the problems. Attached is a dive_1.asm that works for me on real hardware as well as T4 timings from: tune/speed -p10000000 -s1-1000 -f1.1 -C mpn_divexact_1.3
dive_1.asm
Description: Binary data
overhead 6.00 cycles, precision 10000000 units of 3.51e-10 secs, CPU freq
2847.41 MHz
mpn_divexact_1.3
1 43.0004
2 26.9174
3 22.7782
4 20.5837
5 19.4004
6 20.1670
7 20.0004
8 20.2504
9 19.8338
10 19.7004
11 19.8186
12 20.0008
13 20.3851
14 20.7862
15 21.1338
16 21.4380
17 21.7067
18 21.9450
19 22.1584
20 22.3505
22 22.6828
24 22.9593
26 23.1933
28 23.3939
30 30.7669
33 29.5761
36 29.2781
39 29.0260
42 28.8098
46 28.5655
50 28.3603
55 28.1458
60 27.9670
66 27.7882
72 27.6392
79 27.4940
86 27.3724
94 27.2556
103 27.1459
113 27.0446
124 26.9519
136 26.8680
149 26.7922
163 26.7242
179 26.6595
196 26.6023
215 26.5491
236 26.5003
259 26.4559
284 26.4158
312 26.3785
343 26.3443
377 26.3133
414 26.2853
455 26.2596
500 26.2363
550 26.2148
605 26.1953
665 26.1778
731 26.1617
804 26.1471
884 26.1338
972 26.1218
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