Implementation notes: amd64, hydra9, crypto_hash/skein10241024

Computer: hydra9
Architecture: amd64
CPU ID: AuthenticAMD-00610f01-178bfbff
SUPERCOP version: 20171218
Operation: crypto_hash
Primitive: skein10241024
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
17450? ? ?? ? ?optgcc_-fno-schedule-insns_-O_-fomit-frame-pointer2017083120170725
17472? ? ?? ? ?optgcc_-O_-fomit-frame-pointer2017083120170725
17519? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer2017083120170725
17519? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer2017083120170725
17520? ? ?? ? ?optgcc_-m64_-O_-fomit-frame-pointer2017083120170725
17521? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer2017083120170725
17539? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer2017083120170725
17541? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer2017083120170725
17549? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer2017083120170725
17552? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-O_-fomit-frame-pointer2017083120170725
17557? ? ?? ? ?optgcc_-funroll-loops_-O_-fomit-frame-pointer2017083120170725
17567? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-O_-fomit-frame-pointer2017083120170725
17576? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer2017083120170725
17579? ? ?? ? ?optgcc_-funroll-loops_-m64_-O_-fomit-frame-pointer2017083120170725
17586? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer2017083120170725
17610? ? ?? ? ?optgcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv2017083120170725
17618? ? ?? ? ?optgcc_-m64_-march=barcelona_-O_-fomit-frame-pointer2017083120170725
17630? ? ?? ? ?optgcc_-m64_-march=k8_-O_-fomit-frame-pointer2017083120170725
17635? ? ?? ? ?optgcc_-m64_-march=nocona_-O_-fomit-frame-pointer2017083120170725
17646? ? ?? ? ?optgcc_-m64_-march=corei7_-O_-fomit-frame-pointer2017083120170725
17651? ? ?? ? ?optgcc_-march=barcelona_-O_-fomit-frame-pointer2017083120170725
17654? ? ?? ? ?optgcc_-march=nocona_-O_-fomit-frame-pointer2017083120170725
17659? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer2017083120170725
17664? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer2017083120170725
17671? ? ?? ? ?optgcc_-march=k8_-O_-fomit-frame-pointer2017083120170725
17684? ? ?? ? ?optgcc_-m64_-march=core2_-O_-fomit-frame-pointer2017083120170725
18911? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-O2_-fomit-frame-pointer2017083120170725
18914? ? ?? ? ?optgcc_-march=k8_-O2_-fomit-frame-pointer2017083120170725
18938? ? ?? ? ?optgcc_-fno-schedule-insns_-O2_-fomit-frame-pointer2017083120170725
18943? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer2017083120170725
18945? ? ?? ? ?optgcc_-O2_-fomit-frame-pointer2017083120170725
18955? ? ?? ? ?optgcc_-m64_-O2_-fomit-frame-pointer2017083120170725
18955? ? ?? ? ?optgcc_-m64_-march=corei7_-O2_-fomit-frame-pointer2017083120170725
18965? ? ?? ? ?optgcc_-m64_-march=k8_-O2_-fomit-frame-pointer2017083120170725
18990? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer2017083120170725
18993? ? ?? ? ?optgcc_-m64_-march=core2_-O2_-fomit-frame-pointer2017083120170725
18994? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-O2_-fomit-frame-pointer2017083120170725
19054? ? ?? ? ?optgcc_-march=barcelona_-O2_-fomit-frame-pointer2017083120170725
19102? ? ?? ? ?optgcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017083120170725
19106? ? ?? ? ?optgcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv2017083120170725
19169? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer2017083120170725
19246? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer2017083120170725
19337? ? ?? ? ?optgcc_-march=nocona_-O2_-fomit-frame-pointer2017083120170725
19357? ? ?? ? ?optgcc_-m64_-march=nocona_-O2_-fomit-frame-pointer2017083120170725
19371? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer2017083120170725
19377? ? ?? ? ?optgcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer2017083120170725
19407? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017083120170725
19409? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer2017083120170725
19422? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer2017083120170725
19424? ? ?? ? ?optgcc_-funroll-loops_-O2_-fomit-frame-pointer2017083120170725
19450? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer2017083120170725
19469? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer2017083120170725
19987? ? ?? ? ?optgcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer2017083120170725
20020? ? ?? ? ?optgcc_-m64_-march=core2_-O3_-fomit-frame-pointer2017083120170725
20022? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer2017083120170725
20024? ? ?? ? ?optgcc_-funroll-loops_-O3_-fomit-frame-pointer2017083120170725
20035? ? ?? ? ?optgcc_-m64_-march=corei7_-O3_-fomit-frame-pointer2017083120170725
20056? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-O3_-fomit-frame-pointer2017083120170725
20062? ? ?? ? ?optgcc_-O3_-fomit-frame-pointer2017083120170725
20076? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-O3_-fomit-frame-pointer2017083120170725
20078? ? ?? ? ?optgcc_-m64_-O3_-fomit-frame-pointer2017083120170725
20139? ? ?? ? ?optgcc_-fno-schedule-insns_-O3_-fomit-frame-pointer2017083120170725
20335? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer2017083120170725
20336? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer2017083120170725
20491? ? ?? ? ?optgcc_-march=nocona_-O3_-fomit-frame-pointer2017083120170725
20500? ? ?? ? ?optgcc_-m64_-march=nocona_-O3_-fomit-frame-pointer2017083120170725
20716? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer2017083120170725
20793? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017083120170725
20802? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer2017083120170725
20802? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer2017083120170725
20809? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer2017083120170725
20829? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017083120170725
20838? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer2017083120170725
20891? ? ?? ? ?optgcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017083120170725
20916? ? ?? ? ?optgcc_-march=k8_-O3_-fomit-frame-pointer2017083120170725
20923? ? ?? ? ?optgcc_-march=barcelona_-Os_-fomit-frame-pointer2017083120170725
20925? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-Os_-fomit-frame-pointer2017083120170725
20926? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer2017083120170725
20944? ? ?? ? ?optgcc_-m64_-march=core2_-Os_-fomit-frame-pointer2017083120170725
20945? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer2017083120170725
20948? ? ?? ? ?optgcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv2017083120170725
20953? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-Os_-fomit-frame-pointer2017083120170725
20955? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer2017083120170725
20956? ? ?? ? ?optgcc_-march=barcelona_-O3_-fomit-frame-pointer2017083120170725
20958? ? ?? ? ?optgcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017083120170725
20960? ? ?? ? ?optgcc_-m64_-march=k8_-O3_-fomit-frame-pointer2017083120170725
20973? ? ?? ? ?optgcc_-m64_-march=corei7_-Os_-fomit-frame-pointer2017083120170725
21062? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer2017083120170725
21112? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer2017083120170725
21134? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer2017083120170725
21134? ? ?? ? ?optgcc_-m64_-march=k8_-Os_-fomit-frame-pointer2017083120170725
21138? ? ?? ? ?optgcc_-m64_-Os_-fomit-frame-pointer2017083120170725
21140? ? ?? ? ?optgcc_-fno-schedule-insns_-Os_-fomit-frame-pointer2017083120170725
21142? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer2017083120170725
21169? ? ?? ? ?optgcc_-march=k8_-Os_-fomit-frame-pointer2017083120170725
21171? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer2017083120170725
21194? ? ?? ? ?optgcc_-funroll-loops_-Os_-fomit-frame-pointer2017083120170725
21195? ? ?? ? ?optgcc_-march=nocona_-Os_-fomit-frame-pointer2017083120170725
21206? ? ?? ? ?optgcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer2017083120170725
21207? ? ?? ? ?optgcc_-Os_-fomit-frame-pointer2017083120170725
21212? ? ?? ? ?optgcc_-m64_-march=nocona_-Os_-fomit-frame-pointer2017083120170725
21893? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-O3_-fomit-frame-pointer2017083120170725
21983? ? ?? ? ?optgcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv2017083120170725
21988? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-O3_-fomit-frame-pointer2017083120170725
51969? ? ?? ? ?optgcc2017083120170725
51992? ? ?? ? ?optgcc_-funroll-loops2017083120170725
52007? ? ?? ? ?optcc2017083120170725

Test failure

Implementation: crypto_hash/skein10241024/x64
Compiler: cc
error 111

Number of similar (compiler,implementation) pairs: 109, namely:
CompilerImplementations
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=core-avx-i -O2 -fomit-frame-pointer x64
gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer x64
gcc -m64 -march=core-avx-i -O -fomit-frame-pointer x64
gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer x64
gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer opt x64
gcc -m64 -march=core-avx2 -O -fomit-frame-pointer opt x64
gcc -m64 -march=core-avx2 -Os -fomit-frame-pointer opt 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=corei7-avx -O2 -fomit-frame-pointer x64
gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer x64
gcc -m64 -march=corei7-avx -O -fomit-frame-pointer x64
gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer x64
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer x64
gcc -m64 -march=corei7 -O3 -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=native -mtune=native -O2 -fomit-frame-pointer -fwrapv x64
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv x64
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv x64
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv 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:
CompilerImplementations
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]
skein_block_x64.S: addq $LOCAL_SIZE,%rsp #get rid of locals (wipe??)
skein_block_x64.S: ^

Number of similar (compiler,implementation) pairs: 106, namely:
CompilerImplementations
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=core-avx-i -O2 -fomit-frame-pointer x64
gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer x64
gcc -m64 -march=core-avx-i -O -fomit-frame-pointer x64
gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer x64
gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer x64
gcc -m64 -march=core-avx2 -O -fomit-frame-pointer x64
gcc -m64 -march=core-avx2 -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=corei7-avx -O2 -fomit-frame-pointer x64
gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer x64
gcc -m64 -march=corei7-avx -O -fomit-frame-pointer x64
gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer x64
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer x64
gcc -m64 -march=corei7 -O3 -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=native -mtune=native -O2 -fomit-frame-pointer -fwrapv x64
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv x64
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv x64
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv 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: addq $LOCAL_SIZE,%rsp #get rid of locals (wipe??)
skein_block_x64.S: ^
skein_block_x64.S: skein_block_x64.S:336:61: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
skein_block_x64.S: addq $LOCAL_SIZE,%rsp #get rid of locals (wipe??)
skein_block_x64.S: ^

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