Implementation notes: amd64, glyme, crypto_hash/skein256256

Computer: glyme
Architecture: amd64
CPU ID: GenuineIntel-00020652-bfebfbff
SUPERCOP version: 201720170105
Operation: crypto_hash
Primitive: skein256256
TimeImplementationCompilerBenchmark dateSUPERCOP version
13248x64gcc -funroll-loops -O2 -fomit-frame-pointer2017020220170105
13248x64gcc -funroll-loops -m64 -O2 -fomit-frame-pointer2017020220170105
13252x64gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer2017020220170105
13256x64gcc -funroll-loops -O3 -fomit-frame-pointer2017020220170105
13256x64gcc -funroll-loops -m64 -O3 -fomit-frame-pointer2017020220170105
13256x64gcc -m64 -march=k8 -O2 -fomit-frame-pointer2017020220170105
13256x64gcc -march=barcelona -O2 -fomit-frame-pointer2017020220170105
13256x64gcc -march=k8 -O2 -fomit-frame-pointer2017020220170105
13260x64gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer2017020220170105
13260x64gcc -m64 -march=barcelona -O2 -fomit-frame-pointer2017020220170105
13296x64gcc -m64 -march=corei7 -O2 -fomit-frame-pointer2017020220170105
13296x64gcc -m64 -march=corei7 -O3 -fomit-frame-pointer2017020220170105
13296x64gcc -m64 -march=nocona -O -fomit-frame-pointer2017020220170105
13296x64gcc -march=nocona -O -fomit-frame-pointer2017020220170105
13304x64gcc -m64 -O3 -fomit-frame-pointer2017020220170105
13308x64gcc -O2 -fomit-frame-pointer2017020220170105
13308x64gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer2017020220170105
13308x64gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer2017020220170105
13308x64gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv2017020220170105
13308x64gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv2017020220170105
13316x64gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer2017020220170105
13316x64gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer2017020220170105
13316x64gcc -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13320x64gcc -fno-schedule-insns -O2 -fomit-frame-pointer2017020220170105
13320x64gcc -fno-schedule-insns -O3 -fomit-frame-pointer2017020220170105
13320x64gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13320x64gcc -m64 -march=core2 -O2 -fomit-frame-pointer2017020220170105
13320x64gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer2017020220170105
13320x64gcc -m64 -march=k8 -O3 -fomit-frame-pointer2017020220170105
13320x64gcc -march=k8 -O3 -fomit-frame-pointer2017020220170105
13324x64gcc -m64 -O2 -fomit-frame-pointer2017020220170105
13324x64gcc -m64 -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13324x64gcc -m64 -march=core2 -O3 -fomit-frame-pointer2017020220170105
13328x64gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13328x64gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer2017020220170105
13332x64gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer2017020220170105
13332x64gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer2017020220170105
13332x64gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer2017020220170105
13332x64gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer2017020220170105
13332x64gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer2017020220170105
13332x64gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer2017020220170105
13332x64gcc -m64 -march=nocona -O2 -fomit-frame-pointer2017020220170105
13332x64gcc -march=nocona -O2 -fomit-frame-pointer2017020220170105
13336x64gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer2017020220170105
13336x64gcc -m64 -march=nocona -O3 -fomit-frame-pointer2017020220170105
13336x64gcc -march=nocona -O3 -fomit-frame-pointer2017020220170105
13340x64gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer2017020220170105
13340x64gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer2017020220170105
13340x64gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer2017020220170105
13344x64gcc -funroll-loops -O -fomit-frame-pointer2017020220170105
13344x64gcc -funroll-loops -m64 -O -fomit-frame-pointer2017020220170105
13344x64gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer2017020220170105
13344x64gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer2017020220170105
13344x64gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer2017020220170105
13348x64gcc -O3 -fomit-frame-pointer2017020220170105
13352x64gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer2017020220170105
13352x64gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer2017020220170105
13352x64gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer2017020220170105
13352x64gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer2017020220170105
13352x64gcc -march=k8 -O -fomit-frame-pointer2017020220170105
13356x64gcc -funroll-loops -march=nocona -O -fomit-frame-pointer2017020220170105
13356x64gcc -m64 -march=barcelona -O -fomit-frame-pointer2017020220170105
13360x64gcc -fno-schedule-insns -O -fomit-frame-pointer2017020220170105
13360x64gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer2017020220170105
13360x64gcc -march=barcelona -O -fomit-frame-pointer2017020220170105
13360x64gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv2017020220170105
13368x64gcc -O -fomit-frame-pointer2017020220170105
13368x64gcc -m64 -O -fomit-frame-pointer2017020220170105
13368x64gcc -m64 -march=k8 -O -fomit-frame-pointer2017020220170105
13372x64gcc -funroll-loops -march=k8 -O -fomit-frame-pointer2017020220170105
13372x64gcc -m64 -march=core2 -O -fomit-frame-pointer2017020220170105
13372x64gcc -m64 -march=corei7 -O -fomit-frame-pointer2017020220170105
13472x64gcc -m64 -march=core2 -Os -fomit-frame-pointer2017020220170105
13472x64gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer2017020220170105
13472x64gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer2017020220170105
13472x64gcc -m64 -march=corei7 -Os -fomit-frame-pointer2017020220170105
13476x64gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer2017020220170105
13476x64gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv2017020220170105
13484x64gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer2017020220170105
13484x64gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer2017020220170105
13524x64gcc -m64 -march=k8 -Os -fomit-frame-pointer2017020220170105
13524x64gcc -march=k8 -Os -fomit-frame-pointer2017020220170105
13528x64gcc -fno-schedule-insns -Os -fomit-frame-pointer2017020220170105
13528x64gcc -m64 -Os -fomit-frame-pointer2017020220170105
13532x64gcc -funroll-loops -Os -fomit-frame-pointer2017020220170105
13532x64gcc -funroll-loops -m64 -Os -fomit-frame-pointer2017020220170105
13532x64gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer2017020220170105
13532x64gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer2017020220170105
13532x64gcc -m64 -march=barcelona -Os -fomit-frame-pointer2017020220170105
13532x64gcc -march=barcelona -Os -fomit-frame-pointer2017020220170105
13540x64gcc -Os -fomit-frame-pointer2017020220170105
13544x64gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer2017020220170105
13544x64gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer2017020220170105
13544x64gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer2017020220170105
13544x64gcc -m64 -march=nocona -Os -fomit-frame-pointer2017020220170105
13544x64gcc -march=nocona -Os -fomit-frame-pointer2017020220170105
13560x64gcc2017020220170105
13564x64gcc -funroll-loops2017020220170105
13572optgcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer2017020220170105
13600optgcc -funroll-loops -O3 -fomit-frame-pointer2017020220170105
13600optgcc -funroll-loops -m64 -O3 -fomit-frame-pointer2017020220170105
13652optgcc -funroll-loops -O2 -fomit-frame-pointer2017020220170105
13652optgcc -funroll-loops -m64 -O2 -fomit-frame-pointer2017020220170105
13684optgcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer2017020220170105
13684optgcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer2017020220170105
13700optgcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer2017020220170105
13700optgcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer2017020220170105
13704optgcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer2017020220170105
13752optgcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer2017020220170105
13760optgcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer2017020220170105
13772optgcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer2017020220170105
13808optgcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer2017020220170105
13812optgcc -funroll-loops -march=barcelona -O -fomit-frame-pointer2017020220170105
13816optgcc -funroll-loops -O -fomit-frame-pointer2017020220170105
13816optgcc -funroll-loops -march=nocona -O -fomit-frame-pointer2017020220170105
13820optgcc -funroll-loops -m64 -O -fomit-frame-pointer2017020220170105
13824optgcc -m64 -march=core2 -O3 -fomit-frame-pointer2017020220170105
13828optgcc -m64 -march=corei7 -O -fomit-frame-pointer2017020220170105
13836optgcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer2017020220170105
13840optgcc -march=k8 -O -fomit-frame-pointer2017020220170105
13844optgcc -m64 -march=nocona -O3 -fomit-frame-pointer2017020220170105
13844optgcc -march=nocona -O3 -fomit-frame-pointer2017020220170105
13848optgcc -m64 -march=nocona -O2 -fomit-frame-pointer2017020220170105
13848optgcc -march=nocona -O2 -fomit-frame-pointer2017020220170105
13856optgcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer2017020220170105
13856optgcc -m64 -march=native -mtune=native -O -fomit-frame-pointer2017020220170105
13856optgcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv2017020220170105
13868optgcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer2017020220170105
13872optgcc -m64 -march=core2 -O2 -fomit-frame-pointer2017020220170105
13880optgcc -m64 -march=k8 -O -fomit-frame-pointer2017020220170105
13884optgcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer2017020220170105
13884optgcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv2017020220170105
13892optgcc -funroll-loops -march=k8 -O -fomit-frame-pointer2017020220170105
13892optgcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer2017020220170105
13892optgcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer2017020220170105
13896optgcc -m64 -march=k8 -O2 -fomit-frame-pointer2017020220170105
13904optgcc -fno-schedule-insns -O -fomit-frame-pointer2017020220170105
13904optgcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer2017020220170105
13904optgcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer2017020220170105
13904optgcc -m64 -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13908optgcc -m64 -march=corei7 -O3 -fomit-frame-pointer2017020220170105
13912optgcc -m64 -march=nocona -O -fomit-frame-pointer2017020220170105
13912optgcc -march=nocona -O -fomit-frame-pointer2017020220170105
13916optgcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13916optgcc -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13920optgcc -m64 -march=barcelona -O -fomit-frame-pointer2017020220170105
13924optgcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer2017020220170105
13924optgcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv2017020220170105
13932optgcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer2017020220170105
13932optgcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer2017020220170105
13932optgcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer2017020220170105
13940optgcc -m64 -march=core2 -O -fomit-frame-pointer2017020220170105
13940optgcc -m64 -march=k8 -O3 -fomit-frame-pointer2017020220170105
13944optgcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer2017020220170105
13944optgcc -march=barcelona -O -fomit-frame-pointer2017020220170105
13948optgcc -O -fomit-frame-pointer2017020220170105
13948optgcc -m64 -O -fomit-frame-pointer2017020220170105
13948optgcc -m64 -march=corei7 -O2 -fomit-frame-pointer2017020220170105
13952optgcc -march=k8 -O3 -fomit-frame-pointer2017020220170105
13984optgcc -m64 -march=barcelona -O2 -fomit-frame-pointer2017020220170105
13984optgcc -march=k8 -O2 -fomit-frame-pointer2017020220170105
13992optgcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer2017020220170105
13996optgcc -fno-schedule-insns -O2 -fomit-frame-pointer2017020220170105
13996optgcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer2017020220170105
14000optgcc -march=barcelona -O2 -fomit-frame-pointer2017020220170105
14024optgcc -O3 -fomit-frame-pointer2017020220170105
14044optgcc -fno-schedule-insns -O3 -fomit-frame-pointer2017020220170105
14044optgcc -m64 -O2 -fomit-frame-pointer2017020220170105
14068optgcc -O2 -fomit-frame-pointer2017020220170105
14136optgcc -m64 -O3 -fomit-frame-pointer2017020220170105
14600optgcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer2017020220170105
14600optgcc -funroll-loops -march=nocona -Os -fomit-frame-pointer2017020220170105
14864optgcc -m64 -march=nocona -Os -fomit-frame-pointer2017020220170105
14864optgcc -march=nocona -Os -fomit-frame-pointer2017020220170105
15048optgcc -Os -fomit-frame-pointer2017020220170105
15052optgcc -march=k8 -Os -fomit-frame-pointer2017020220170105
15104optgcc -fno-schedule-insns -Os -fomit-frame-pointer2017020220170105
15120optgcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer2017020220170105
15120optgcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv2017020220170105
15140optgcc -m64 -Os -fomit-frame-pointer2017020220170105
15140optgcc -m64 -march=k8 -Os -fomit-frame-pointer2017020220170105
15180optgcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer2017020220170105
15204optgcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer2017020220170105
15216optgcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer2017020220170105
15216optgcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer2017020220170105
15236optgcc -funroll-loops -Os -fomit-frame-pointer2017020220170105
15236optgcc -funroll-loops -m64 -Os -fomit-frame-pointer2017020220170105
15240optgcc -funroll-loops -march=k8 -Os -fomit-frame-pointer2017020220170105
15256optgcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer2017020220170105
15268optgcc -m64 -march=core2 -Os -fomit-frame-pointer2017020220170105
15268optgcc -m64 -march=corei7 -Os -fomit-frame-pointer2017020220170105
15276optgcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer2017020220170105
15312optgcc -march=barcelona -Os -fomit-frame-pointer2017020220170105
15356optgcc -m64 -march=barcelona -Os -fomit-frame-pointer2017020220170105
35176optclang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments2017020220170105
35180optclang -O3 -fwrapv -march=native -fomit-frame-pointer -Qunused-arguments2017020220170105
35212optclang -O3 -fomit-frame-pointer -Qunused-arguments2017020220170105
35212optclang -mcpu=cortex-a8 -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments2017020220170105
35212optclang -mcpu=cortex-a9 -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments2017020220170105
35212optclang -mcpu=native -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments2017020220170105
63024optgcc2017020220170105
63024optgcc -funroll-loops2017020220170105
77136optcc2017020220170105

Compiler output

Implementation: crypto_hash/skein256256/x64
Compiler: cc
skein_block_x64.S: skein_block_x64.S:336:61: warning: trigraph ignored [-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:427:13: warning: \u used with no following hex digits; treating as '\' followed by identifier [-Wunicode]
skein_block_x64.S: .elseif ((\useAddOp + 0) == 0)
skein_block_x64.S: ^
skein_block_x64.S: 2 warnings generated.
skein_block_x64.S: skein_block_x64.S:16:5: error: unknown directive
skein_block_x64.S: .altmacro
skein_block_x64.S: ^
skein_block_x64.S: skein_block_x64.S:17:5: error: unknown directive
skein_block_x64.S: .psize 0,128 #list file has no page boundaries
skein_block_x64.S: ^
skein_block_x64.S: gt;:2:7: error: expected absolute expression
skein_block_x64.S: .if _RCNT_ #is there anything to do?
skein_block_x64.S: ^
skein_block_x64.S: gt;:6:5: note: while in macro instantiation
skein_block_x64.S: RotL64 rbx, 256,%((4*_Rbase_+0) % 8),0
skein_block_x64.S: ^
skein_block_x64.S: skein_block_x64.S:616:1: note: while in macro instantiation
skein_block_x64.S: .rept _UNROLL_CNT*2
skein_block_x64.S: ^
skein_block_x64.S: gt;:3:10: error: invalid operand for instruction
skein_block_x64.S: rolq $_RCNT_,%rbx
skein_block_x64.S: ^~~~~~~
skein_block_x64.S: ...

Number of similar (compiler,implementation) pairs: 7, namely:
CompilerImplementations
cc x64
clang -O3 -fomit-frame-pointer -Qunused-arguments x64
clang -O3 -fwrapv -march=native -fomit-frame-pointer -Qunused-arguments x64
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments x64
clang -mcpu=cortex-a8 -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments x64
clang -mcpu=cortex-a9 -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments x64
clang -mcpu=native -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments x64

Compiler output

Implementation: crypto_hash/skein256256/x64
Compiler: gcc
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: 94, namely:
CompilerImplementations
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=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/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 [-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