Implementation notes: amd64, gsm2, crypto_hash/skein10241024

Computer: gsm2
Architecture: amd64
CPU ID: GenuineIntel-000306e4-bfebfbff
SUPERCOP version: 20170725
Operation: crypto_hash
Primitive: skein10241024
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
17476? ? ?? ? ?optgcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv2017080520170725
20136? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer2017080520170725
22992? ? ?? ? ?optgcc_-m64_-O_-fomit-frame-pointer2017080520170725
23228? ? ?? ? ?optgcc_-m64_-march=barcelona_-O_-fomit-frame-pointer2017080520170725
23368? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer2017080520170725
23484? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer2017080520170725
23508? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-O_-fomit-frame-pointer2017080520170725
23556? ? ?? ? ?optgcc_-m64_-march=nocona_-O_-fomit-frame-pointer2017080520170725
23632? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer2017080520170725
23700? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-O_-fomit-frame-pointer2017080520170725
23724? ? ?? ? ?optgcc_-m64_-march=core2_-O2_-fomit-frame-pointer2017080520170725
23732? ? ?? ? ?optgcc_-m64_-march=core2_-O3_-fomit-frame-pointer2017080520170725
23780? ? ?? ? ?optgcc_-funroll-loops_-m64_-O_-fomit-frame-pointer2017080520170725
23880? ? ?? ? ?optgcc_-O2_-fomit-frame-pointer2017080520170725
23888? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer2017080520170725
23948? ? ?? ? ?optgcc_-O_-fomit-frame-pointer2017080520170725
24012? ? ?? ? ?optgcc_-fno-schedule-insns_-O_-fomit-frame-pointer2017080520170725
24024? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer2017080520170725
24076? ? ?? ? ?optgcc_-m64_-march=core2_-O_-fomit-frame-pointer2017080520170725
24096? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer2017080520170725
24160? ? ?? ? ?optgcc_-march=nocona_-O_-fomit-frame-pointer2017080520170725
24180? ? ?? ? ?optgcc_-m64_-march=corei7_-O_-fomit-frame-pointer2017080520170725
24236? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer2017080520170725
24248? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer2017080520170725
24272? ? ?? ? ?optgcc_-m64_-march=corei7_-O2_-fomit-frame-pointer2017080520170725
24360? ? ?? ? ?optgcc_-march=barcelona_-O2_-fomit-frame-pointer2017080520170725
24364? ? ?? ? ?optgcc_-march=k8_-O2_-fomit-frame-pointer2017080520170725
24384? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer2017080520170725
24464? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer2017080520170725
24744? ? ?? ? ?optgcc_-m64_-march=k8_-O_-fomit-frame-pointer2017080520170725
24800? ? ?? ? ?optgcc_-funroll-loops_-O2_-fomit-frame-pointer2017080520170725
24892? ? ?? ? ?optgcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv2017080520170725
24900? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-O2_-fomit-frame-pointer2017080520170725
24944? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017080520170725
24976? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer2017080520170725
24988? ? ?? ? ?optgcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv2017080520170725
25068? ? ?? ? ?optgcc_-march=k8_-O_-fomit-frame-pointer2017080520170725
25208? ? ?? ? ?optgcc_-march=nocona_-O2_-fomit-frame-pointer2017080520170725
25340? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer2017080520170725
25460? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer2017080520170725
25512? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-O2_-fomit-frame-pointer2017080520170725
25792? ? ?? ? ?optgcc_-fno-schedule-insns_-O2_-fomit-frame-pointer2017080520170725
25800? ? ?? ? ?optgcc_-funroll-loops_-O_-fomit-frame-pointer2017080520170725
25816? ? ?? ? ?optgcc_-m64_-march=k8_-O2_-fomit-frame-pointer2017080520170725
25848? ? ?? ? ?optgcc_-march=barcelona_-O_-fomit-frame-pointer2017080520170725
26032? ? ?? ? ?optgcc_-m64_-march=nocona_-O2_-fomit-frame-pointer2017080520170725
26144? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer2017080520170725
26360? ? ?? ? ?optgcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer2017080520170725
26464? ? ?? ? ?optgcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017080520170725
26532? ? ?? ? ?optgcc_-m64_-O2_-fomit-frame-pointer2017080520170725
27008? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer2017080520170725
27028? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer2017080520170725
27212? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer2017080520170725
27232? ? ?? ? ?optgcc_-fno-schedule-insns_-O3_-fomit-frame-pointer2017080520170725
27516? ? ?? ? ?optgcc_-m64_-O3_-fomit-frame-pointer2017080520170725
27616? ? ?? ? ?optgcc_-funroll-loops_-O3_-fomit-frame-pointer2017080520170725
27676? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer2017080520170725
27844? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-O3_-fomit-frame-pointer2017080520170725
27864? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-O3_-fomit-frame-pointer2017080520170725
27928? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer2017080520170725
28180? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer2017080520170725
28252? ? ?? ? ?optgcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer2017080520170725
28268? ? ?? ? ?optgcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer2017080520170725
28296? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer2017080520170725
28580? ? ?? ? ?optgcc_-m64_-march=nocona_-O3_-fomit-frame-pointer2017080520170725
28648? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer2017080520170725
28716? ? ?? ? ?optgcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer2017080520170725
28748? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer2017080520170725
28772? ? ?? ? ?optgcc_-march=nocona_-Os_-fomit-frame-pointer2017080520170725
28784? ? ?? ? ?optgcc_-m64_-march=k8_-Os_-fomit-frame-pointer2017080520170725
28860? ? ?? ? ?optgcc_-march=nocona_-O3_-fomit-frame-pointer2017080520170725
28904? ? ?? ? ?optgcc_-funroll-loops_-Os_-fomit-frame-pointer2017080520170725
29068? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-Os_-fomit-frame-pointer2017080520170725
29076? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017080520170725
29080? ? ?? ? ?optgcc_-march=k8_-O3_-fomit-frame-pointer2017080520170725
29128? ? ?? ? ?optgcc_-O3_-fomit-frame-pointer2017080520170725
29192? ? ?? ? ?optgcc_-fno-schedule-insns_-Os_-fomit-frame-pointer2017080520170725
29236? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer2017080520170725
29256? ? ?? ? ?optgcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer2017080520170725
29320? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer2017080520170725
29460? ? ?? ? ?optgcc_-m64_-march=corei7_-O3_-fomit-frame-pointer2017080520170725
29460? ? ?? ? ?optgcc_-march=barcelona_-O3_-fomit-frame-pointer2017080520170725
29524? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017080520170725
29716? ? ?? ? ?optgcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer2017080520170725
29788? ? ?? ? ?optgcc_-march=k8_-Os_-fomit-frame-pointer2017080520170725
29804? ? ?? ? ?optgcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017080520170725
29924? ? ?? ? ?optgcc_-m64_-march=nocona_-Os_-fomit-frame-pointer2017080520170725
29944? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer2017080520170725
29948? ? ?? ? ?optgcc_-m64_-Os_-fomit-frame-pointer2017080520170725
30000? ? ?? ? ?optgcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer2017080520170725
30044? ? ?? ? ?optgcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer2017080520170725
30116? ? ?? ? ?optgcc_-m64_-march=k8_-O3_-fomit-frame-pointer2017080520170725
30168? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-Os_-fomit-frame-pointer2017080520170725
30208? ? ?? ? ?optgcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer2017080520170725
30236? ? ?? ? ?optgcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017080520170725
30372? ? ?? ? ?optgcc_-m64_-march=core2_-Os_-fomit-frame-pointer2017080520170725
30500? ? ?? ? ?optgcc_-march=barcelona_-Os_-fomit-frame-pointer2017080520170725
30552? ? ?? ? ?optgcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer2017080520170725
30600? ? ?? ? ?optgcc_-m64_-march=corei7_-Os_-fomit-frame-pointer2017080520170725
31600? ? ?? ? ?optgcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv2017080520170725
31656? ? ?? ? ?optgcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer2017080520170725
31664? ? ?? ? ?optgcc_-m64_-march=core-avx-i_-O3_-fomit-frame-pointer2017080520170725
32240? ? ?? ? ?optgcc_-Os_-fomit-frame-pointer2017080520170725
32360? ? ?? ? ?optgcc_-m64_-march=corei7-avx_-O3_-fomit-frame-pointer2017080520170725
83992? ? ?? ? ?optgcc_-funroll-loops2017080520170725
86164? ? ?? ? ?optgcc2017080520170725
93056? ? ?? ? ?optcc2017080520170725

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