Implementation notes: amd64, bigmem, crypto_hash/skein256256

Computer: bigmem
Architecture: amd64
CPU ID: GenuineIntel-000206e6-bfebfbff
SUPERCOP version: 20141124
Operation: crypto_hash
Primitive: skein256256

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
10820	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
10849	`opt`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
10851	`opt`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
10852	`opt`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
10852	`opt`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
10860	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
10863	`opt`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
10877	`opt`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
10877	`opt`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
10886	`opt`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
10922	`opt`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
10923	`opt`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
10948	`opt`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
10948	`opt`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
10959	`opt`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
10988	`opt`	`gcc -m64 -O3 -fomit-frame-pointer`	20150215	20141124
10994	`opt`	`gcc -O2 -fomit-frame-pointer`	20150215	20141124
10994	`opt`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20150215	20141124
11005	`opt`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
11010	`opt`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20150215	20141124
11013	`opt`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11016	`opt`	`gcc -O3 -fomit-frame-pointer`	20150215	20141124
11016	`opt`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11019	`opt`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11025	`opt`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20150215	20141124
11025	`opt`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11028	`opt`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20150215	20141124
11030	`opt`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20150215	20141124
11041	`opt`	`gcc -m64 -O2 -fomit-frame-pointer`	20150215	20141124
11044	`opt`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20150215	20141124
11050	`opt`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20150215	20141124
11056	`opt`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20150215	20141124
11064	`opt`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11064	`opt`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11081	`opt`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11089	`opt`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20150215	20141124
11089	`opt`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20150215	20141124
11089	`opt`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20150215	20141124
11089	`opt`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20150215	20141124
11095	`opt`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11098	`opt`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20150215	20141124
11130	`opt`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20150215	20141124
11152	`opt`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20150215	20141124
11169	`opt`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20150215	20141124
11177	`x64`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20150215	20141124
11177	`x64`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20150215	20141124
11177	`x64`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20150215	20141124
11177	`x64`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -m64 -O2 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
11180	`x64`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
11183	`x64`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -O2 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
11186	`x64`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -funroll-loops -O -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11189	`x64`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20150215	20141124
11191	`x64`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20150215	20141124
11192	`x64`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11192	`x64`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11192	`x64`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11195	`x64`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11197	`x64`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20150215	20141124
11197	`x64`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20150215	20141124
11197	`x64`	`gcc -m64 -O -fomit-frame-pointer`	20150215	20141124
11197	`x64`	`gcc -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11197	`x64`	`gcc -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11200	`x64`	`gcc -O3 -fomit-frame-pointer`	20150215	20141124
11200	`x64`	`gcc -O -fomit-frame-pointer`	20150215	20141124
11200	`x64`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11200	`x64`	`gcc -m64 -O3 -fomit-frame-pointer`	20150215	20141124
11200	`x64`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11206	`x64`	`gcc -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11237	`x64`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20150215	20141124
11248	`x64`	`gcc`	20150215	20141124
11251	`x64`	`gcc -funroll-loops`	20150215	20141124
11274	`x64`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20150215	20141124
11274	`x64`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20150215	20141124
11274	`x64`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20150215	20141124
11274	`x64`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20150215	20141124
11285	`x64`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11291	`x64`	`cc`	20150215	20141124
11362	`opt`	`gcc -O -fomit-frame-pointer`	20150215	20141124
11362	`opt`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20150215	20141124
11362	`opt`	`gcc -m64 -O -fomit-frame-pointer`	20150215	20141124
11393	`x64`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20150215	20141124
11393	`x64`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20150215	20141124
11393	`x64`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11393	`x64`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20150215	20141124
11393	`x64`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20150215	20141124
11393	`x64`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20150215	20141124
11395	`x64`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20150215	20141124
11396	`x64`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
11396	`x64`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
11396	`x64`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
11396	`x64`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
11398	`x64`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
11398	`x64`	`gcc -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
11401	`x64`	`gcc -Os -fomit-frame-pointer`	20150215	20141124
11401	`x64`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20150215	20141124
11401	`x64`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11401	`x64`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20150215	20141124
11401	`x64`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11401	`x64`	`gcc -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11404	`x64`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
11407	`x64`	`gcc -m64 -Os -fomit-frame-pointer`	20150215	20141124
11410	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11410	`x64`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
11415	`opt`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11433	`opt`	`gcc -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11452	`opt`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20150215	20141124
11455	`opt`	`gcc -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11458	`opt`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11461	`opt`	`gcc -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11464	`opt`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20150215	20141124
11466	`opt`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20150215	20141124
11475	`opt`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11475	`opt`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11478	`opt`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11481	`opt`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20150215	20141124
11481	`opt`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20150215	20141124
11484	`opt`	`gcc -funroll-loops -O -fomit-frame-pointer`	20150215	20141124
11486	`opt`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20150215	20141124
11492	`opt`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20150215	20141124
11495	`opt`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20150215	20141124
11512	`opt`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20150215	20141124
11934	`opt`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20150215	20141124
11937	`opt`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11988	`opt`	`gcc -m64 -Os -fomit-frame-pointer`	20150215	20141124
11991	`opt`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11996	`opt`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20150215	20141124
11996	`opt`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11996	`opt`	`gcc -march=k8 -Os -fomit-frame-pointer`	20150215	20141124
11999	`opt`	`gcc -Os -fomit-frame-pointer`	20150215	20141124
11999	`opt`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20150215	20141124
12008	`opt`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20150215	20141124
12376	`opt`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
12399	`opt`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
12416	`opt`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
12452	`opt`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20150215	20141124
12767	`opt`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20150215	20141124
12767	`opt`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20150215	20141124
12784	`opt`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20150215	20141124
12804	`opt`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
12804	`opt`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
12821	`opt`	`gcc -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
12835	`opt`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20150215	20141124
13014	`opt`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20150215	20141124
52909	`opt`	`cc`	20150215	20141124
52910	`opt`	`gcc`	20150215	20141124
52910	`opt`	`gcc -funroll-loops`	20150215	20141124

Compiler output

Implementation: crypto_hash/skein256256/x64
Compiler: cc

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

Number of similar (compiler,implementation) pairs: 87, 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 -O3 -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 -O3 -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=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/skein256256/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
skein_block_x64.S: skein_block_x64.S:336:61: warning: trigraph ??) ignored, use -trigraphs to enable

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