Implementation notes: amd64, manny357, crypto_dh/nistp256

Computer: manny357
Architecture: amd64
CPU ID: GenuineIntel-000406f1-bfebfbff
SUPERCOP version: 20170228
Operation: crypto_dh
Primitive: nistp256
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
1848048? ? ?? ? ?wblicc_-xCORE-AVX2_-O2_-fomit-frame-pointer2017041020170228
1972776? ? ?? ? ?wblicc_-no-vec2017041020170228
1983488? ? ?? ? ?wblicc_-xCORE-AVX2_-O3_-fomit-frame-pointer2017041020170228
2054316? ? ?? ? ?wblicc2017041020170228
2220716? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4.1_-O3_-fomit-frame-pointer2017041020170228
2223052? ? ?? ? ?wblgcc_-m64_-march=core2_-O3_-fomit-frame-pointer2017041020170228
2223388? ? ?? ? ?wblgcc_-m64_-march=corei7_-O3_-fomit-frame-pointer2017041020170228
2225236? ? ?? ? ?wblgcc_-m64_-march=corei7-avx_-O3_-fomit-frame-pointer2017041020170228
2247708? ? ?? ? ?wblgcc_-m64_-march=core-avx-i_-O3_-fomit-frame-pointer2017041020170228
2255284? ? ?? ? ?wblgcc_-m64_-march=core-avx2_-O3_-fomit-frame-pointer2017041020170228
2256176? ? ?? ? ?wblgcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer2017041020170228
2260784? ? ?? ? ?wblgcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv2017041020170228
2264888? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4_-O3_-fomit-frame-pointer2017041020170228
2385956? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer2017041020170228
2396704? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer2017041020170228
2397576? ? ?? ? ?wblgcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer2017041020170228
2402056? ? ?? ? ?wblgcc_-funroll-loops_-O3_-fomit-frame-pointer2017041020170228
2402160? ? ?? ? ?wblgcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer2017041020170228
2406604? ? ?? ? ?wblgcc_-O3_-fomit-frame-pointer2017041020170228
2408120? ? ?? ? ?wblgcc_-m64_-O3_-fomit-frame-pointer2017041020170228
2408940? ? ?? ? ?wblgcc_-fno-schedule-insns_-O3_-fomit-frame-pointer2017041020170228
2408960? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017041020170228
2409984? ? ?? ? ?wblgcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer2017041020170228
2411116? ? ?? ? ?wblgcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer2017041020170228
2421016? ? ?? ? ?wblgcc_-march=k8_-O3_-fomit-frame-pointer2017041020170228
2423340? ? ?? ? ?wblgcc_-m64_-march=k8_-O3_-fomit-frame-pointer2017041020170228
2454444? ? ?? ? ?wblgcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017041020170228
2458180? ? ?? ? ?wblgcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer2017041020170228
2518124? ? ?? ? ?wblgcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer2017041020170228
2519404? ? ?? ? ?wblgcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer2017041020170228
2523832? ? ?? ? ?wblgcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer2017041020170228
2535444? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer2017041020170228
2536256? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017041020170228
2538860? ? ?? ? ?wblgcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer2017041020170228
2542056? ? ?? ? ?wblgcc_-m64_-march=nocona_-O3_-fomit-frame-pointer2017041020170228
2554476? ? ?? ? ?wblgcc_-march=barcelona_-O3_-fomit-frame-pointer2017041020170228
2576656? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer2017041020170228
2602948? ? ?? ? ?wblgcc_-funroll-loops_-O2_-fomit-frame-pointer2017041020170228
2624056? ? ?? ? ?reficc_-no-vec2017041020170228
2627632? ? ?? ? ?reficc2017041020170228
2632244? ? ?? ? ?reficc_-xCORE-AVX2_-O2_-fomit-frame-pointer2017041020170228
2635312? ? ?? ? ?reficc_-xCORE-AVX2_-O3_-fomit-frame-pointer2017041020170228
2648936? ? ?? ? ?wblgcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv2017041020170228
2661980? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer2017041020170228
2662932? ? ?? ? ?wblgcc_-m64_-march=core2_-O2_-fomit-frame-pointer2017041020170228
2668544? ? ?? ? ?wblgcc_-m64_-march=corei7_-O2_-fomit-frame-pointer2017041020170228
2669492? ? ?? ? ?wblgcc_-march=nocona_-O3_-fomit-frame-pointer2017041020170228
2670372? ? ?? ? ?wblgcc_-fno-schedule-insns_-O2_-fomit-frame-pointer2017041020170228
2672484? ? ?? ? ?wblgcc_-O2_-fomit-frame-pointer2017041020170228
2681188? ? ?? ? ?wblgcc_-m64_-O2_-fomit-frame-pointer2017041020170228
2688428? ? ?? ? ?wblgcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017041020170228
2690592? ? ?? ? ?wblgcc_-march=barcelona_-O2_-fomit-frame-pointer2017041020170228
2691476? ? ?? ? ?wblgcc_-m64_-march=core-avx2_-O2_-fomit-frame-pointer2017041020170228
2699008? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer2017041020170228
2699048? ? ?? ? ?wblgcc_-m64_-march=core-avx-i_-O2_-fomit-frame-pointer2017041020170228
2704720? ? ?? ? ?wblgcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer2017041020170228
2707024? ? ?? ? ?wblgcc_-m64_-march=nocona_-O2_-fomit-frame-pointer2017041020170228
2709788? ? ?? ? ?wblgcc_-funroll-loops_-m64_-O_-fomit-frame-pointer2017041020170228
2720624? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer2017041020170228
2724856? ? ?? ? ?wblgcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer2017041020170228
2729588? ? ?? ? ?wblgcc_-march=k8_-O2_-fomit-frame-pointer2017041020170228
2735028? ? ?? ? ?wblgcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer2017041020170228
2736076? ? ?? ? ?wblgcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer2017041020170228
2740692? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer2017041020170228
2748140? ? ?? ? ?wblgcc_-march=nocona_-O2_-fomit-frame-pointer2017041020170228
2768120? ? ?? ? ?wblgcc_-funroll-loops_-O_-fomit-frame-pointer2017041020170228
2768156? ? ?? ? ?wblgcc_-m64_-march=k8_-O2_-fomit-frame-pointer2017041020170228
2777568? ? ?? ? ?wblgcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer2017041020170228
2817680? ? ?? ? ?wblgcc_-m64_-march=corei7-avx_-O2_-fomit-frame-pointer2017041020170228
2873728? ? ?? ? ?wblgcc_-march=nocona_-O_-fomit-frame-pointer2017041020170228
2884136? ? ?? ? ?wblgcc_-m64_-march=nocona_-O_-fomit-frame-pointer2017041020170228
2897000? ? ?? ? ?wblgcc_-fno-schedule-insns_-O_-fomit-frame-pointer2017041020170228
2897768? ? ?? ? ?wblgcc_-m64_-O_-fomit-frame-pointer2017041020170228
2900324? ? ?? ? ?wblgcc_-O_-fomit-frame-pointer2017041020170228
2908368? ? ?? ? ?wblgcc_-m64_-march=k8_-O_-fomit-frame-pointer2017041020170228
2919260? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer2017041020170228
2919532? ? ?? ? ?wblgcc_-m64_-march=core2_-O_-fomit-frame-pointer2017041020170228
2921032? ? ?? ? ?wblgcc_-m64_-march=core-avx-i_-O_-fomit-frame-pointer2017041020170228
2925204? ? ?? ? ?wblgcc_-march=k8_-O_-fomit-frame-pointer2017041020170228
2926004? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer2017041020170228
2927680? ? ?? ? ?wblgcc_-m64_-march=corei7_-O_-fomit-frame-pointer2017041020170228
2938276? ? ?? ? ?wblgcc_-m64_-march=corei7-avx_-O_-fomit-frame-pointer2017041020170228
2955804? ? ?? ? ?wblgcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer2017041020170228
2961732? ? ?? ? ?wblgcc_-m64_-march=core-avx2_-O_-fomit-frame-pointer2017041020170228
2993000? ? ?? ? ?wblgcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv2017041020170228
3063304? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer2017041020170228
3099264? ? ?? ? ?wblgcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer2017041020170228
3174092? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer2017041020170228
3179476? ? ?? ? ?wblgcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer2017041020170228
3197688? ? ?? ? ?wblgcc_-m64_-march=nocona_-Os_-fomit-frame-pointer2017041020170228
3201900? ? ?? ? ?wblgcc_-m64_-march=core2_-Os_-fomit-frame-pointer2017041020170228
3203040? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer2017041020170228
3208200? ? ?? ? ?wblgcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer2017041020170228
3209312? ? ?? ? ?wblgcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer2017041020170228
3211484? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer2017041020170228
3214972? ? ?? ? ?wblgcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer2017041020170228
3216216? ? ?? ? ?wblgcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017041020170228
3218300? ? ?? ? ?wblgcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer2017041020170228
3219384? ? ?? ? ?wblgcc_-m64_-march=core-avx-i_-Os_-fomit-frame-pointer2017041020170228
3221100? ? ?? ? ?wblgcc_-m64_-march=k8_-Os_-fomit-frame-pointer2017041020170228
3225496? ? ?? ? ?wblgcc_-m64_-march=core-avx2_-Os_-fomit-frame-pointer2017041020170228
3226076? ? ?? ? ?wblgcc_-march=k8_-Os_-fomit-frame-pointer2017041020170228
3229844? ? ?? ? ?wblgcc_-m64_-Os_-fomit-frame-pointer2017041020170228
3230220? ? ?? ? ?wblgcc_-m64_-march=corei7-avx_-Os_-fomit-frame-pointer2017041020170228
3233516? ? ?? ? ?wblgcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer2017041020170228
3234948? ? ?? ? ?wblgcc_-Os_-fomit-frame-pointer2017041020170228
3237296? ? ?? ? ?wblgcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017041020170228
3238448? ? ?? ? ?wblgcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv2017041020170228
3245660? ? ?? ? ?wblgcc_-funroll-loops_-Os_-fomit-frame-pointer2017041020170228
3249836? ? ?? ? ?wblgcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer2017041020170228
3251704? ? ?? ? ?wblgcc_-march=barcelona_-Os_-fomit-frame-pointer2017041020170228
3260988? ? ?? ? ?wblgcc_-m64_-march=corei7_-Os_-fomit-frame-pointer2017041020170228
3261676? ? ?? ? ?wblgcc_-fno-schedule-insns_-Os_-fomit-frame-pointer2017041020170228
3277536? ? ?? ? ?wblgcc_-march=barcelona_-O_-fomit-frame-pointer2017041020170228
3314444? ? ?? ? ?wblgcc_-m64_-march=barcelona_-O_-fomit-frame-pointer2017041020170228
3431248? ? ?? ? ?wblgcc_-march=nocona_-Os_-fomit-frame-pointer2017041020170228
12348100? ? ?? ? ?wblcc2017041020170228
12503592? ? ?? ? ?wblgcc2017041020170228
12523856? ? ?? ? ?wblgcc_-funroll-loops2017041020170228

Compiler output

Implementation: crypto_dh/nistp256/ref
Compiler: cc
try.c: /scratch_lustre_na/bdolbeaur/TEMP/supercop-20170228/supercop-data/manny357/amd64/lib/libsupercop.a(crypto_scalarmult_nistp256_mj32-gep256.o): In function `gep256_scalarmult':
try.c: gep256.c:(.text+0x...): undefined reference to `_intel_fast_memset'
try.c: collect2: error: ld returned 1 exit status

Number of similar (compiler,implementation) pairs: 107, namely:
CompilerImplementations
cc ref
gcc ref
gcc -O2 -fomit-frame-pointer ref
gcc -O3 -fomit-frame-pointer ref
gcc -O -fomit-frame-pointer ref
gcc -Os -fomit-frame-pointer ref
gcc -fno-schedule-insns -O2 -fomit-frame-pointer ref
gcc -fno-schedule-insns -O3 -fomit-frame-pointer ref
gcc -fno-schedule-insns -O -fomit-frame-pointer ref
gcc -fno-schedule-insns -Os -fomit-frame-pointer ref
gcc -funroll-loops ref
gcc -funroll-loops -O2 -fomit-frame-pointer ref
gcc -funroll-loops -O3 -fomit-frame-pointer ref
gcc -funroll-loops -O -fomit-frame-pointer ref
gcc -funroll-loops -Os -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -O -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -O -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer ref
gcc -m64 -O2 -fomit-frame-pointer ref
gcc -m64 -O3 -fomit-frame-pointer ref
gcc -m64 -O -fomit-frame-pointer ref
gcc -m64 -Os -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -O2 -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -O -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -O -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -Os -fomit-frame-pointer ref
gcc -m64 -march=core2 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core2 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core2 -O -fomit-frame-pointer ref
gcc -m64 -march=core2 -Os -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -O2 -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -O -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer ref
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer ref
gcc -m64 -march=corei7 -O3 -fomit-frame-pointer ref
gcc -m64 -march=corei7 -O -fomit-frame-pointer ref
gcc -m64 -march=corei7 -Os -fomit-frame-pointer ref
gcc -m64 -march=k8 -O2 -fomit-frame-pointer ref
gcc -m64 -march=k8 -O3 -fomit-frame-pointer ref
gcc -m64 -march=k8 -O -fomit-frame-pointer ref
gcc -m64 -march=k8 -Os -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer ref
gcc -m64 -march=nocona -O2 -fomit-frame-pointer ref
gcc -m64 -march=nocona -O3 -fomit-frame-pointer ref
gcc -m64 -march=nocona -O -fomit-frame-pointer ref
gcc -m64 -march=nocona -Os -fomit-frame-pointer ref
gcc -march=barcelona -O2 -fomit-frame-pointer ref
gcc -march=barcelona -O3 -fomit-frame-pointer ref
gcc -march=barcelona -O -fomit-frame-pointer ref
gcc -march=barcelona -Os -fomit-frame-pointer ref
gcc -march=k8 -O2 -fomit-frame-pointer ref
gcc -march=k8 -O3 -fomit-frame-pointer ref
gcc -march=k8 -O -fomit-frame-pointer ref
gcc -march=k8 -Os -fomit-frame-pointer ref
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv ref
gcc -march=nocona -O2 -fomit-frame-pointer ref
gcc -march=nocona -O3 -fomit-frame-pointer ref
gcc -march=nocona -O -fomit-frame-pointer ref
gcc -march=nocona -Os -fomit-frame-pointer ref

Compiler output

Implementation: crypto_dh/nistp256/ref
Compiler: gcc -m64 -march=barcelona -O2 -fomit-frame-pointer
try.c: /scratch_lustre_na/bdolbeaur/TEMP/supercop-20170228/supercop-data/manny357/amd64/lib/libsupercop.a(crypto_scalarmult_nistp256_mj32-gep256.o): In function `gep256_scalarmult':
try.c: gep256.c:(.text+0x...): undefined reference to `_intel_fast_memset'
try.c: collect2: error: ld returned 1 exit status
try.c: /scratch_lustre_na/bdolbeaur/TEMP/supercop-20170228/supercop-data/manny357/amd64/lib/libsupercop.a(crypto_scalarmult_nistp256_mj32-gep256.o): In function `gep256_scalarmult':
try.c: gep256.c:(.text+0x...): undefined reference to `_intel_fast_memset'
try.c: collect2: error: ld returned 1 exit status

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
gcc -m64 -march=barcelona -O2 -fomit-frame-pointer ref
gcc -m64 -march=barcelona -O3 -fomit-frame-pointer ref
gcc -m64 -march=barcelona -O -fomit-frame-pointer ref
gcc -m64 -march=barcelona -Os -fomit-frame-pointer ref