Implementation notes: amd64, mace, crypto_hash/skein10241024

Computer: mace
Architecture: amd64
CPU ID: AuthenticAMD-00040fb2-178bfbff
SUPERCOP version: 20120310
Operation: crypto_hash
Primitive: skein10241024

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
16152	`opt`	`gcc -m64 -march=nocona -O -fomit-frame-pointer`	20120120	20120120
16204	`opt`	`gcc -m64 -O -fomit-frame-pointer`	20120120	20120120
16237	`opt`	`gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer`	20120120	20120120
16245	`opt`	`gcc -funroll-loops -O -fomit-frame-pointer`	20120120	20120120
16245	`opt`	`gcc -funroll-loops -m64 -O -fomit-frame-pointer`	20120120	20120120
16263	`opt`	`gcc -march=nocona -O -fomit-frame-pointer`	20120120	20120120
16270	`opt`	`gcc -fno-schedule-insns -O -fomit-frame-pointer`	20120120	20120120
16367	`opt`	`gcc -O -fomit-frame-pointer`	20120120	20120120
16389	`opt`	`gcc -m64 -march=core2 -O -fomit-frame-pointer`	20120120	20120120
16391	`opt`	`gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20120120	20120120
16396	`opt`	`gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer`	20120120	20120120
16455	`opt`	`gcc -funroll-loops -march=nocona -O -fomit-frame-pointer`	20120120	20120120
16549	`opt`	`gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer`	20120120	20120120
16793	`opt`	`gcc -m64 -march=core2 -Os -fomit-frame-pointer`	20120120	20120120
16793	`opt`	`gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20120120	20120120
16805	`opt`	`gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer`	20120120	20120120
16806	`opt`	`gcc -funroll-loops -march=k8 -O -fomit-frame-pointer`	20120120	20120120
16822	`opt`	`gcc -m64 -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
16822	`opt`	`gcc -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
16829	`opt`	`gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer`	20120120	20120120
16880	`opt`	`gcc -m64 -march=k8 -O -fomit-frame-pointer`	20120120	20120120
16881	`opt`	`gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer`	20120120	20120120
16887	`opt`	`gcc -march=k8 -O -fomit-frame-pointer`	20120120	20120120
16933	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
16940	`opt`	`gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer`	20120120	20120120
17127	`opt`	`gcc -m64 -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
17133	`opt`	`gcc -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
17159	`opt`	`gcc -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
17201	`opt`	`gcc -m64 -Os -fomit-frame-pointer`	20120120	20120120
17224	`opt`	`gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer`	20120120	20120120
17225	`opt`	`gcc -fno-schedule-insns -Os -fomit-frame-pointer`	20120120	20120120
17225	`opt`	`gcc -m64 -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
17233	`opt`	`gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
17236	`opt`	`gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer`	20120120	20120120
17237	`opt`	`gcc -Os -fomit-frame-pointer`	20120120	20120120
17255	`opt`	`gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer`	20120120	20120120
17255	`opt`	`gcc -funroll-loops -m64 -Os -fomit-frame-pointer`	20120120	20120120
17255	`opt`	`gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
17261	`opt`	`gcc -funroll-loops -Os -fomit-frame-pointer`	20120120	20120120
17261	`opt`	`gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer`	20120120	20120120
17378	`opt`	`gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
17385	`opt`	`gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
17392	`opt`	`gcc -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
17407	`opt`	`gcc -m64 -march=nocona -Os -fomit-frame-pointer`	20120120	20120120
18544	`opt`	`gcc -fno-schedule-insns -O3 -fomit-frame-pointer`	20120120	20120120
18544	`opt`	`gcc -m64 -O3 -fomit-frame-pointer`	20120120	20120120
18562	`opt`	`gcc -O3 -fomit-frame-pointer`	20120120	20120120
18679	`opt`	`gcc -m64 -march=core2 -O3 -fomit-frame-pointer`	20120120	20120120
18706	`opt`	`gcc -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
18706	`opt`	`gcc -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
18825	`opt`	`gcc -m64 -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
18825	`opt`	`gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer`	20120120	20120120
18880	`opt`	`gcc -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
18925	`opt`	`gcc -funroll-loops -m64 -O3 -fomit-frame-pointer`	20120120	20120120
18932	`opt`	`gcc -funroll-loops -O3 -fomit-frame-pointer`	20120120	20120120
18932	`opt`	`gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer`	20120120	20120120
19097	`opt`	`gcc -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
19109	`opt`	`gcc -m64 -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
19251	`opt`	`gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
19252	`opt`	`gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer`	20120120	20120120
19260	`opt`	`gcc -m64 -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
19262	`opt`	`gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
19265	`opt`	`gcc -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
19268	`opt`	`gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer`	20120120	20120120
19270	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer`	20120120	20120120
19305	`opt`	`gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer`	20120120	20120120
19311	`opt`	`gcc -funroll-loops -O2 -fomit-frame-pointer`	20120120	20120120
19333	`opt`	`gcc -funroll-loops -m64 -O2 -fomit-frame-pointer`	20120120	20120120
19384	`opt`	`gcc -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
19401	`opt`	`gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
19425	`opt`	`gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer`	20120120	20120120
19426	`opt`	`gcc -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
19465	`opt`	`gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
19468	`opt`	`gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer`	20120120	20120120
19512	`opt`	`gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
19542	`opt`	`gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer`	20120120	20120120
19547	`opt`	`gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20120120	20120120
19548	`opt`	`gcc -m64 -march=core2 -O2 -fomit-frame-pointer`	20120120	20120120
19552	`opt`	`gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20120120	20120120
19648	`opt`	`gcc -O2 -fomit-frame-pointer`	20120120	20120120
19657	`opt`	`gcc -m64 -O2 -fomit-frame-pointer`	20120120	20120120
19690	`opt`	`gcc -fno-schedule-insns -O2 -fomit-frame-pointer`	20120120	20120120
20074	`opt`	`gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
20078	`opt`	`gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
20153	`opt`	`gcc -m64 -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
20178	`opt`	`gcc -march=nocona -O2 -fomit-frame-pointer`	20120120	20120120
115122	`opt`	`gcc -funroll-loops`	20120120	20120120
115123	`opt`	`gcc`	20120120	20120120
115131	`opt`	`cc`	20120120	20120120

Test failure

Implementation: crypto_hash/skein10241024/x64
Compiler: cc

error 111

Number of similar (compiler,implementation) pairs: 85, 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=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

Number of similar (compiler,implementation) pairs: 85, 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=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
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