Implementation notes: amd64, jos, crypto_hash/skein256256

Computer: jos
Architecture: amd64
CPU ID: GenuineIntel-00010676-bfebfbff
SUPERCOP version: 20141014
Operation: crypto_hash
Primitive: skein256256

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
12548	`opt`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20140703	20140622
12592	`opt`	`gcc -O2 -fomit-frame-pointer`	20140703	20140622
12593	`opt`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20140703	20140622
12600	`opt`	`gcc -m64 -O3 -fomit-frame-pointer`	20140703	20140622
12638	`opt`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20140703	20140622
12645	`opt`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20140703	20140622
12668	`opt`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20140703	20140622
12690	`opt`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20140703	20140622
12705	`opt`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20140703	20140622
12735	`opt`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
12742	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
12743	`opt`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20140703	20140622
12743	`opt`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
12743	`opt`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20140703	20140622
12750	`opt`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20140703	20140622
12750	`opt`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
12787	`opt`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
12795	`opt`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20140703	20140622
12802	`opt`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20140703	20140622
12802	`opt`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
12810	`opt`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
12817	`opt`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
12818	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
12825	`opt`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20140703	20140622
12825	`opt`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
12840	`opt`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20140703	20140622
12840	`opt`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
12840	`opt`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
12847	`opt`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20140703	20140622
12855	`opt`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
12855	`opt`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
12863	`opt`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
12863	`opt`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
12870	`opt`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
12870	`opt`	`gcc -m64 -O2 -fomit-frame-pointer`	20140703	20140622
12870	`opt`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
12877	`opt`	`gcc -O3 -fomit-frame-pointer`	20140703	20140622
12878	`opt`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20140703	20140622
12923	`opt`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
12923	`opt`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
12930	`opt`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
12930	`opt`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
12945	`opt`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
13065	`opt`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
13095	`x64`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
13103	`x64`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20140703	20140622
13103	`x64`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13103	`x64`	`gcc -m64 -O2 -fomit-frame-pointer`	20140703	20140622
13103	`x64`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
13110	`x64`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20140703	20140622
13110	`x64`	`gcc -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13110	`x64`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
13117	`x64`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
13117	`x64`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
13117	`x64`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13117	`x64`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20140703	20140622
13117	`x64`	`gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20140703	20140622
13117	`x64`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20140703	20140622
13118	`x64`	`gcc -O -fomit-frame-pointer`	20140703	20140622
13118	`x64`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
13118	`x64`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13118	`x64`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
13118	`x64`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13125	`x64`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
13132	`x64`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20140703	20140622
13132	`x64`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20140703	20140622
13132	`x64`	`gcc -m64 -O3 -fomit-frame-pointer`	20140703	20140622
13132	`x64`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20140703	20140622
13132	`x64`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13133	`x64`	`gcc -O2 -fomit-frame-pointer`	20140703	20140622
13133	`x64`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
13133	`x64`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20140703	20140622
13133	`x64`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20140703	20140622
13133	`x64`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -O3 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20140703	20140622
13140	`x64`	`gcc -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13148	`x64`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20140703	20140622
13237	`x64`	`gcc -funroll-loops`	20140703	20140622
13327	`x64`	`cc`	20140703	20140622
13335	`x64`	`gcc`	20140703	20140622
13388	`x64`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
13395	`x64`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
13395	`x64`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
13395	`x64`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
13395	`x64`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20140703	20140622
13402	`x64`	`gcc -m64 -Os -fomit-frame-pointer`	20140703	20140622
13402	`x64`	`gcc -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
13403	`x64`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
13403	`x64`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
13410	`x64`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20140703	20140622
13410	`x64`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20140703	20140622
13417	`x64`	`gcc -Os -fomit-frame-pointer`	20140703	20140622
13417	`x64`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
13417	`x64`	`gcc -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
13418	`x64`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20140703	20140622
13418	`x64`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
13418	`x64`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
13425	`x64`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20140703	20140622
13425	`x64`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
13425	`x64`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20140703	20140622
13432	`x64`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20140703	20140622
13432	`x64`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20140703	20140622
13440	`opt`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20140703	20140622
13448	`opt`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13448	`opt`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20140703	20140622
13470	`opt`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20140703	20140622
13477	`opt`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13477	`opt`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20140703	20140622
13478	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13485	`opt`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13493	`opt`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13493	`opt`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20140703	20140622
13493	`opt`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13500	`opt`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13500	`opt`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20140703	20140622
13507	`opt`	`gcc -funroll-loops -O -fomit-frame-pointer`	20140703	20140622
13507	`opt`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20140703	20140622
13515	`opt`	`gcc -m64 -O -fomit-frame-pointer`	20140703	20140622
13523	`opt`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13545	`opt`	`gcc -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13553	`opt`	`gcc -march=k8 -O -fomit-frame-pointer`	20140703	20140622
13560	`opt`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20140703	20140622
13560	`opt`	`gcc -march=nocona -O -fomit-frame-pointer`	20140703	20140622
13590	`opt`	`gcc -O -fomit-frame-pointer`	20140703	20140622
14692	`opt`	`gcc -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
14693	`opt`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20140703	20140622
14707	`opt`	`gcc -m64 -Os -fomit-frame-pointer`	20140703	20140622
14707	`opt`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20140703	20140622
14707	`opt`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20140703	20140622
14708	`opt`	`gcc -Os -fomit-frame-pointer`	20140703	20140622
14708	`opt`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
14745	`opt`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20140703	20140622
14768	`opt`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20140703	20140622
14880	`opt`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
14880	`opt`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
15030	`opt`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
15097	`opt`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
15105	`opt`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20140703	20140622
15113	`opt`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
15150	`opt`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
15165	`opt`	`gcc -march=nocona -Os -fomit-frame-pointer`	20140703	20140622
15637	`opt`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
15652	`opt`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20140703	20140622
15698	`opt`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20140703	20140622
15735	`opt`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20140703	20140622
15750	`opt`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20140703	20140622
64747	`opt`	`gcc`	20140703	20140622
64792	`opt`	`cc`	20140703	20140622
64958	`opt`	`gcc -funroll-loops`	20140703	20140622

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