Implementation notes: amd64, giant4, crypto_hash/skein256256

Computer: giant4
Architecture: amd64
CPU ID: GenuineIntel-000206c2-bfebfbff
SUPERCOP version: 20120207
Operation: crypto_hash
Primitive: skein256256

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
11430	`opt`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20120120	20120120
11808	`x64`	`gcc -m64 -O -fomit-frame-pointer`	20120120	20120120
11934	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
11961	`opt`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
12012	`opt`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12030	`opt`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
12033	`opt`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20120120	20120120
12033	`opt`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20120120	20120120
12033	`opt`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12039	`opt`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12093	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12108	`opt`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12135	`opt`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20120120	20120120
12138	`opt`	`gcc -funroll-loops -O -fomit-frame-pointer`	20120120	20120120
12144	`opt`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20120120	20120120
12153	`opt`	`gcc -O3 -fomit-frame-pointer`	20120120	20120120
12159	`opt`	`gcc -O2 -fomit-frame-pointer`	20120120	20120120
12165	`opt`	`gcc -m64 -O2 -fomit-frame-pointer`	20120120	20120120
12186	`opt`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12195	`opt`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20120120	20120120
12201	`opt`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12213	`opt`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20120120	20120120
12216	`opt`	`gcc -m64 -O3 -fomit-frame-pointer`	20120120	20120120
12222	`opt`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12222	`opt`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
12225	`opt`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12231	`opt`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12231	`opt`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12234	`opt`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12237	`opt`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12243	`opt`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20120120	20120120
12249	`opt`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12249	`opt`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12252	`opt`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12252	`opt`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12288	`opt`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12291	`opt`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12297	`opt`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12330	`opt`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20120120	20120120
12369	`opt`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20120120	20120120
12372	`opt`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20120120	20120120
12372	`opt`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20120120	20120120
12372	`opt`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20120120	20120120
12372	`opt`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20120120	20120120
12402	`opt`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20120120	20120120
12414	`x64`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12426	`opt`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20120120	20120120
12426	`x64`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12429	`x64`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12432	`x64`	`gcc -O -fomit-frame-pointer`	20120120	20120120
12432	`x64`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20120120	20120120
12432	`x64`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20120120	20120120
12432	`x64`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20120120	20120120
12435	`x64`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20120120	20120120
12435	`x64`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12435	`x64`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12435	`x64`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
12438	`x64`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12438	`x64`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12438	`x64`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12438	`x64`	`gcc -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -O2 -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -funroll-loops -O -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -m64 -O3 -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12441	`x64`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
12444	`x64`	`gcc -O3 -fomit-frame-pointer`	20120120	20120120
12444	`x64`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20120120	20120120
12444	`x64`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20120120	20120120
12444	`x64`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20120120	20120120
12447	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12447	`x64`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12447	`x64`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
12450	`x64`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12450	`x64`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
12450	`x64`	`gcc -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12453	`x64`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20120120	20120120
12456	`x64`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
12459	`x64`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20120120	20120120
12462	`x64`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20120120	20120120
12465	`x64`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12468	`x64`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20120120	20120120
12495	`x64`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20120120	20120120
12504	`x64`	`gcc`	20120120	20120120
12510	`x64`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
12510	`x64`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20120120	20120120
12510	`x64`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20120120	20120120
12513	`x64`	`cc`	20120120	20120120
12513	`x64`	`gcc -funroll-loops`	20120120	20120120
12516	`x64`	`gcc -m64 -O2 -fomit-frame-pointer`	20120120	20120120
12519	`x64`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12522	`x64`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12582	`opt`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20120120	20120120
12606	`opt`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12657	`opt`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12660	`x64`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20120120	20120120
12660	`x64`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20120120	20120120
12660	`x64`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20120120	20120120
12663	`x64`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
12663	`x64`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
12663	`x64`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20120120	20120120
12663	`x64`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20120120	20120120
12666	`x64`	`gcc -Os -fomit-frame-pointer`	20120120	20120120
12666	`x64`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
12666	`x64`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
12666	`x64`	`gcc -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
12669	`x64`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
12669	`x64`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
12669	`x64`	`gcc -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
12672	`x64`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
12672	`x64`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20120120	20120120
12675	`x64`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
12675	`x64`	`gcc -m64 -Os -fomit-frame-pointer`	20120120	20120120
12675	`x64`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20120120	20120120
12678	`opt`	`gcc -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12681	`x64`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20120120	20120120
12681	`x64`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
12687	`x64`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
12690	`opt`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20120120	20120120
12690	`opt`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20120120	20120120
12693	`opt`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20120120	20120120
12708	`opt`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20120120	20120120
12747	`opt`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20120120	20120120
12768	`opt`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12774	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12783	`opt`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20120120	20120120
12789	`opt`	`gcc -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12804	`opt`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12822	`opt`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12828	`opt`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20120120	20120120
12834	`opt`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20120120	20120120
12834	`opt`	`gcc -m64 -O -fomit-frame-pointer`	20120120	20120120
12834	`opt`	`gcc -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12840	`opt`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
12846	`opt`	`gcc -O -fomit-frame-pointer`	20120120	20120120
12861	`opt`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20120120	20120120
13194	`opt`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20120120	20120120
13194	`opt`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
13242	`opt`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20120120	20120120
13245	`opt`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
13245	`opt`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
13245	`opt`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
13509	`opt`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20120120	20120120
13536	`opt`	`gcc -Os -fomit-frame-pointer`	20120120	20120120
13536	`opt`	`gcc -m64 -Os -fomit-frame-pointer`	20120120	20120120
13536	`opt`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
13536	`opt`	`gcc -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
13743	`opt`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
13803	`opt`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
13839	`opt`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
13848	`opt`	`gcc -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
14055	`opt`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20120120	20120120
14058	`opt`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
14064	`opt`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
14133	`opt`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20120120	20120120
14133	`opt`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20120120	20120120
14133	`opt`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20120120	20120120
58911	`opt`	`gcc`	20120120	20120120
58926	`opt`	`cc`	20120120	20120120
58956	`opt`	`gcc -funroll-loops`	20120120	20120120

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