Implementation notes: amd64, phenom, crypto_hash/skein10241024

Computer: phenom
Architecture: amd64
CPU ID: AuthenticAMD-00100fa0-178bfbff
SUPERCOP version: 20120812
Operation: crypto_hash
Primitive: skein10241024

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
13334	`opt`	`gcc -funroll-loops -O -fomit-frame-pointer`	20120523	20120521
13356	`opt`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20120523	20120521
13398	`opt`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20120523	20120521
13678	`opt`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20120523	20120521
13744	`opt`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20120523	20120521
14108	`opt`	`gcc -m64 -Os -fomit-frame-pointer`	20120523	20120521
14132	`opt`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20120523	20120521
14267	`opt`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20120523	20120521
14294	`opt`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20120523	20120521
14356	`opt`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20120523	20120521
15446	`opt`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20120523	20120521
15448	`opt`	`gcc -O2 -fomit-frame-pointer`	20120523	20120521
15620	`opt`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20120523	20120521
15658	`opt`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20120523	20120521
15715	`opt`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20120523	20120521
15723	`opt`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20120523	20120521
15745	`opt`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20120523	20120521
15777	`opt`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20120523	20120521
15785	`opt`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20120523	20120521
15791	`opt`	`gcc -O -fomit-frame-pointer`	20120523	20120521
15794	`opt`	`gcc -march=nocona -O -fomit-frame-pointer`	20120523	20120521
15796	`opt`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20120523	20120521
15804	`opt`	`gcc -m64 -march=corei7 -O -fomit-frame-pointer`	20120523	20120521
15822	`opt`	`gcc -m64 -O -fomit-frame-pointer`	20120523	20120521
15823	`opt`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20120523	20120521
16064	`opt`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20120523	20120521
16095	`opt`	`gcc -march=k8 -O -fomit-frame-pointer`	20120523	20120521
16103	`opt`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20120523	20120521
16119	`opt`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20120523	20120521
16128	`opt`	`gcc -march=barcelona -O -fomit-frame-pointer`	20120523	20120521
16186	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20120523	20120521
16186	`opt`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20120523	20120521
16192	`opt`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20120523	20120521
16622	`opt`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20120523	20120521
16625	`opt`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20120523	20120521
16625	`opt`	`gcc -march=k8 -Os -fomit-frame-pointer`	20120523	20120521
16669	`opt`	`gcc -Os -fomit-frame-pointer`	20120523	20120521
16692	`opt`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20120523	20120521
16716	`opt`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20120523	20120521
16716	`opt`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20120523	20120521
16751	`opt`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20120523	20120521
16837	`opt`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20120523	20120521
16839	`opt`	`gcc -m64 -march=corei7 -Os -fomit-frame-pointer`	20120523	20120521
16846	`opt`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20120523	20120521
16851	`opt`	`gcc -march=nocona -Os -fomit-frame-pointer`	20120523	20120521
16852	`opt`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20120523	20120521
16869	`opt`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20120523	20120521
16883	`opt`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20120523	20120521
16902	`opt`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20120523	20120521
16965	`opt`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20120523	20120521
17028	`opt`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20120523	20120521
18118	`opt`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20120523	20120521
18125	`opt`	`gcc -m64 -march=corei7 -O2 -fomit-frame-pointer`	20120523	20120521
18178	`opt`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20120523	20120521
18197	`opt`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20120523	20120521
18214	`opt`	`gcc -m64 -O2 -fomit-frame-pointer`	20120523	20120521
18380	`opt`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20120523	20120521
18395	`opt`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120523	20120521
18403	`opt`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20120523	20120521
18445	`opt`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20120523	20120521
18446	`opt`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20120523	20120521
18489	`opt`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20120523	20120521
18588	`opt`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20120523	20120521
18610	`opt`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20120523	20120521
18618	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120523	20120521
18640	`opt`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20120523	20120521
18823	`opt`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20120523	20120521
18827	`opt`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20120523	20120521
18834	`opt`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20120523	20120521
18883	`opt`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20120523	20120521
18899	`opt`	`gcc -m64 -O3 -fomit-frame-pointer`	20120523	20120521
18909	`opt`	`gcc -O3 -fomit-frame-pointer`	20120523	20120521
18910	`opt`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20120523	20120521
18935	`opt`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20120523	20120521
18956	`opt`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20120523	20120521
18967	`opt`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20120523	20120521
19770	`opt`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20120523	20120521
19771	`opt`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20120523	20120521
19773	`opt`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120523	20120521
20050	`opt`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20120523	20120521
20055	`opt`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20120523	20120521
20216	`opt`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20120523	20120521
20220	`opt`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20120523	20120521
20228	`opt`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20120523	20120521
20235	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120523	20120521
20327	`opt`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20120523	20120521
20332	`opt`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20120523	20120521
20405	`opt`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20120523	20120521
20517	`opt`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20120523	20120521
116164	`opt`	`gcc -funroll-loops`	20120523	20120521
136883	`opt`	`cc`	20120523	20120521
136927	`opt`	`gcc`	20120523	20120521

Test failure

Implementation: crypto_hash/skein10241024/x64
Compiler: cc

error 111

Number of similar (compiler,implementation) pairs: 88, namely:

Compiler	Implementations
cc	x64
gcc	x64
gcc -O2 -fomit-frame-pointer	x64
gcc -O3 -fomit-frame-pointer	x64
gcc -O -fomit-frame-pointer	x64
gcc -Os -fomit-frame-pointer	x64
gcc -fno-schedule-insns -O2 -fomit-frame-pointer	x64
gcc -fno-schedule-insns -O3 -fomit-frame-pointer	x64
gcc -fno-schedule-insns -O -fomit-frame-pointer	x64
gcc -fno-schedule-insns -Os -fomit-frame-pointer	x64
gcc -funroll-loops	x64
gcc -funroll-loops -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -O -fomit-frame-pointer	x64
gcc -funroll-loops -Os -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -O -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -O -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer	x64
gcc -m64 -O2 -fomit-frame-pointer	x64
gcc -m64 -O3 -fomit-frame-pointer	x64
gcc -m64 -O -fomit-frame-pointer	x64
gcc -m64 -Os -fomit-frame-pointer	x64
gcc -m64 -march=core2 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -O3 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -O -fomit-frame-pointer	x64
gcc -m64 -march=core2 -Os -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer	x64
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=corei7 -O -fomit-frame-pointer	x64
gcc -m64 -march=corei7 -Os -fomit-frame-pointer	x64
gcc -m64 -march=k8 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=k8 -O3 -fomit-frame-pointer	x64
gcc -m64 -march=k8 -O -fomit-frame-pointer	x64
gcc -m64 -march=k8 -Os -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer	x64
gcc -m64 -march=nocona -O2 -fomit-frame-pointer	x64
gcc -m64 -march=nocona -O3 -fomit-frame-pointer	x64
gcc -m64 -march=nocona -O -fomit-frame-pointer	x64
gcc -m64 -march=nocona -Os -fomit-frame-pointer	x64
gcc -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -march=barcelona -O -fomit-frame-pointer	x64
gcc -march=barcelona -Os -fomit-frame-pointer	x64
gcc -march=k8 -O2 -fomit-frame-pointer	x64
gcc -march=k8 -O3 -fomit-frame-pointer	x64
gcc -march=k8 -O -fomit-frame-pointer	x64
gcc -march=k8 -Os -fomit-frame-pointer	x64
gcc -march=nocona -O2 -fomit-frame-pointer	x64
gcc -march=nocona -O3 -fomit-frame-pointer	x64
gcc -march=nocona -O -fomit-frame-pointer	x64
gcc -march=nocona -Os -fomit-frame-pointer	x64

Test failure

Implementation: crypto_hash/skein10241024/x64
Compiler: gcc -m64 -march=barcelona -O2 -fomit-frame-pointer

error 111
error 111

Number of similar (compiler,implementation) pairs: 4, namely:

Compiler	Implementations
gcc -m64 -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -m64 -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -m64 -march=barcelona -O -fomit-frame-pointer	x64
gcc -m64 -march=barcelona -Os -fomit-frame-pointer	x64

Compiler output

Implementation: crypto_hash/skein10241024/x64
Compiler: cc

skein_block_x64.S: skein_block_x64.S:336:61: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]

Number of similar (compiler,implementation) pairs: 88, namely:

Compiler	Implementations
cc	x64
gcc	x64
gcc -O2 -fomit-frame-pointer	x64
gcc -O3 -fomit-frame-pointer	x64
gcc -O -fomit-frame-pointer	x64
gcc -Os -fomit-frame-pointer	x64
gcc -fno-schedule-insns -O2 -fomit-frame-pointer	x64
gcc -fno-schedule-insns -O3 -fomit-frame-pointer	x64
gcc -fno-schedule-insns -O -fomit-frame-pointer	x64
gcc -fno-schedule-insns -Os -fomit-frame-pointer	x64
gcc -funroll-loops	x64
gcc -funroll-loops -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -O -fomit-frame-pointer	x64
gcc -funroll-loops -Os -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer	x64
gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer	x64
gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer	x64
gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -O -fomit-frame-pointer	x64
gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -O -fomit-frame-pointer	x64
gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer	x64
gcc -m64 -O2 -fomit-frame-pointer	x64
gcc -m64 -O3 -fomit-frame-pointer	x64
gcc -m64 -O -fomit-frame-pointer	x64
gcc -m64 -Os -fomit-frame-pointer	x64
gcc -m64 -march=core2 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -O3 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -O -fomit-frame-pointer	x64
gcc -m64 -march=core2 -Os -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer	x64
gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer	x64
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=corei7 -O -fomit-frame-pointer	x64
gcc -m64 -march=corei7 -Os -fomit-frame-pointer	x64
gcc -m64 -march=k8 -O2 -fomit-frame-pointer	x64
gcc -m64 -march=k8 -O3 -fomit-frame-pointer	x64
gcc -m64 -march=k8 -O -fomit-frame-pointer	x64
gcc -m64 -march=k8 -Os -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer	x64
gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer	x64
gcc -m64 -march=nocona -O2 -fomit-frame-pointer	x64
gcc -m64 -march=nocona -O3 -fomit-frame-pointer	x64
gcc -m64 -march=nocona -O -fomit-frame-pointer	x64
gcc -m64 -march=nocona -Os -fomit-frame-pointer	x64
gcc -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -march=barcelona -O -fomit-frame-pointer	x64
gcc -march=barcelona -Os -fomit-frame-pointer	x64
gcc -march=k8 -O2 -fomit-frame-pointer	x64
gcc -march=k8 -O3 -fomit-frame-pointer	x64
gcc -march=k8 -O -fomit-frame-pointer	x64
gcc -march=k8 -Os -fomit-frame-pointer	x64
gcc -march=nocona -O2 -fomit-frame-pointer	x64
gcc -march=nocona -O3 -fomit-frame-pointer	x64
gcc -march=nocona -O -fomit-frame-pointer	x64
gcc -march=nocona -Os -fomit-frame-pointer	x64

Compiler output

Implementation: crypto_hash/skein10241024/x64
Compiler: gcc -m64 -march=barcelona -O2 -fomit-frame-pointer

skein_block_x64.S: skein_block_x64.S:336:61: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
skein_block_x64.S: skein_block_x64.S:336:61: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]

Number of similar (compiler,implementation) pairs: 4, namely:

Compiler	Implementations
gcc -m64 -march=barcelona -O2 -fomit-frame-pointer	x64
gcc -m64 -march=barcelona -O3 -fomit-frame-pointer	x64
gcc -m64 -march=barcelona -O -fomit-frame-pointer	x64
gcc -m64 -march=barcelona -Os -fomit-frame-pointer	x64