Implementation notes: amd64, gpu, crypto_dh/ed521gs

Computer: gpu
Architecture: amd64
CPU ID: GenuineIntel-000206d7-bfebfbff
SUPERCOP version: 20190816
Operation: crypto_dh
Primitive: ed521gs
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
917010027334 0 047837 768 1920refclang_-O3_-fwrapv_-mavx_-maes_-mpclmul_-fomit-frame-pointer_-Qunused-arguments2019083020190816
932847627334 0 047837 768 1920refclang_-O3_-fwrapv_-mavx_-fomit-frame-pointer_-Qunused-arguments2019083020190816
9545580? ? ?? ? ?refgcc_-m64_-march=corei7_-Os_-fomit-frame-pointer2019083020190816
9946936? ? ?? ? ?refgcc_-march=k8_-O2_-fomit-frame-pointer2019083020190816
9973964? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer2019083020190816
10011520? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer2019083020190816
10050372? ? ?? ? ?refgcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer2019083020190816
1006848434528 0 056453 768 1600refclang_-O3_-fomit-frame-pointer_-Qunused-arguments2019083020190816
10069176? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer2019083020190816
10071340? ? ?? ? ?refgcc_-m64_-march=nocona_-Os_-fomit-frame-pointer2019083020190816
10072728? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer2019083020190816
1011650831675 0 053101 768 1920refclang_-O3_-fwrapv_-march=native_-fomit-frame-pointer_-Qunused-arguments2019083020190816
10153252? ? ?? ? ?refgcc_-fno-schedule-insns_-O2_-fomit-frame-pointer2019083020190816
10331020? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer2019083020190816
10364312? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer2019083020190816
10378160? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer2019083020190816
10393956? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer2019083020190816
10396396? ? ?? ? ?refgcc_-fno-schedule-insns_-O3_-fomit-frame-pointer2019083020190816
10399452? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer2019083020190816
10454864? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer2019083020190816
10458688? ? ?? ? ?refgcc_-march=barcelona_-O2_-fomit-frame-pointer2019083020190816
10591032? ? ?? ? ?refgcc_-march=nocona_-O2_-fomit-frame-pointer2019083020190816
10597716? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer2019083020190816
10602208? ? ?? ? ?refgcc_-march=k8_-Os_-fomit-frame-pointer2019083020190816
10625708? ? ?? ? ?refgcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv2019083020190816
10713040? ? ?? ? ?refgcc_-funroll-loops_-Os_-fomit-frame-pointer2019083020190816
10746804? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer2019083020190816
10780584? ? ?? ? ?refgcc_-march=nocona_-O3_-fomit-frame-pointer2019083020190816
1079062834528 0 057797 768 1600refclang_-mcpu=cortex-a9_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2019083020190816
10793212? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer2019083020190816
10795516? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-O2_-fomit-frame-pointer2019083020190816
10798412? ? ?? ? ?refgcc_-Os_-fomit-frame-pointer2019083020190816
1080496434528 0 057797 768 1600refclang_-mcpu=cortex-a8_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2019083020190816
1080515234528 0 057797 768 1600refclang_-mcpu=native_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2019083020190816
10815588? ? ?? ? ?refgcc_-march=nocona_-Os_-fomit-frame-pointer2019083020190816
10840204? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-Os_-fomit-frame-pointer2019083020190816
10867840? ? ?? ? ?refgcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer2019083020190816
10871472? ? ?? ? ?refgcc_-m64_-march=corei7_-O3_-fomit-frame-pointer2019083020190816
10893068? ? ?? ? ?refgcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv2019083020190816
10911580? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer2019083020190816
10915416? ? ?? ? ?refgcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer2019083020190816
10924768? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer2019083020190816
10946152? ? ?? ? ?refgcc_-m64_-Os_-fomit-frame-pointer2019083020190816
10946408? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer2019083020190816
10965144? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-Os_-fomit-frame-pointer2019083020190816
11032240? ? ?? ? ?refgcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv2019083020190816
11041544? ? ?? ? ?refgcc_-m64_-O2_-fomit-frame-pointer2019083020190816
11043476? ? ?? ? ?refgcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer2019083020190816
11066188? ? ?? ? ?refgcc_-fno-schedule-insns_-Os_-fomit-frame-pointer2019083020190816
11101520? ? ?? ? ?refgcc_-m64_-march=core2_-Os_-fomit-frame-pointer2019083020190816
11127056? ? ?? ? ?refgcc_-m64_-march=k8_-Os_-fomit-frame-pointer2019083020190816
11127232? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer2019083020190816
11135028? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer2019083020190816
11143856? ? ?? ? ?refgcc_-m64_-march=core2_-O2_-fomit-frame-pointer2019083020190816
11151272? ? ?? ? ?refgcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer2019083020190816
11154820? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer2019083020190816
11190024? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer2019083020190816
11218460? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-O2_-fomit-frame-pointer2019083020190816
11222848? ? ?? ? ?refgcc_-O3_-fomit-frame-pointer2019083020190816
11251316? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer2019083020190816
11267440? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer2019083020190816
11272644? ? ?? ? ?refgcc_-march=barcelona_-Os_-fomit-frame-pointer2019083020190816
11276100? ? ?? ? ?refgcc_-O2_-fomit-frame-pointer2019083020190816
11292056? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer2019083020190816
11307192? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-O3_-fomit-frame-pointer2019083020190816
11341052? ? ?? ? ?refgcc_-m64_-march=k8_-O2_-fomit-frame-pointer2019083020190816
11347240? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-O3_-fomit-frame-pointer2019083020190816
11351964? ? ?? ? ?refgcc_-m64_-march=corei7_-O2_-fomit-frame-pointer2019083020190816
11379500? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer2019083020190816
11408452? ? ?? ? ?refgcc_-m64_-march=k8_-O3_-fomit-frame-pointer2019083020190816
11413932? ? ?? ? ?refgcc_-funroll-loops_-O2_-fomit-frame-pointer2019083020190816
11485028? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer2019083020190816
11491224? ? ?? ? ?refgcc_-march=barcelona_-O3_-fomit-frame-pointer2019083020190816
11546396? ? ?? ? ?refgcc_-m64_-march=nocona_-O2_-fomit-frame-pointer2019083020190816
11547012? ? ?? ? ?refgcc_-m64_-march=core2_-O3_-fomit-frame-pointer2019083020190816
11569268? ? ?? ? ?refgcc_-march=k8_-O3_-fomit-frame-pointer2019083020190816
11672608? ? ?? ? ?refgcc_-m64_-O3_-fomit-frame-pointer2019083020190816
11695636? ? ?? ? ?refgcc_-m64_-march=nocona_-O3_-fomit-frame-pointer2019083020190816
11705748? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-O3_-fomit-frame-pointer2019083020190816
1171874431675 0 053101 768 1920refclang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2019083020190816
11761196? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer2019083020190816
11824680? ? ?? ? ?refgcc_-funroll-loops_-O3_-fomit-frame-pointer2019083020190816
11850148? ? ?? ? ?refgcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer2019083020190816
11908464? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer2019083020190816
12045196? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-O3_-fomit-frame-pointer2019083020190816
12133256? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer2019083020190816
14832732? ? ?? ? ?refgcc_-m64_-march=barcelona_-O_-fomit-frame-pointer2019083020190816
14970272? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer2019083020190816
15194444? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer2019083020190816
15290508? ? ?? ? ?refgcc_-m64_-march=corei7_-O_-fomit-frame-pointer2019083020190816
15453952? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer2019083020190816
15572476? ? ?? ? ?refgcc_-funroll-loops_-O_-fomit-frame-pointer2019083020190816
15605568? ? ?? ? ?refgcc_-fno-schedule-insns_-O_-fomit-frame-pointer2019083020190816
15609456? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-O_-fomit-frame-pointer2019083020190816
15925816? ? ?? ? ?refgcc_-m64_-march=k8_-O_-fomit-frame-pointer2019083020190816
16493384? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-O_-fomit-frame-pointer2019083020190816
16498520? ? ?? ? ?refgcc_-m64_-march=nocona_-O_-fomit-frame-pointer2019083020190816
16740088? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer2019083020190816
16828584? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer2019083020190816
16852976? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer2019083020190816
16993700? ? ?? ? ?refgcc_-funroll-loops_-m64_-O_-fomit-frame-pointer2019083020190816
17086940? ? ?? ? ?refgcc_-march=k8_-O_-fomit-frame-pointer2019083020190816
17130816? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer2019083020190816
17144480? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer2019083020190816
17206824? ? ?? ? ?refgcc_-march=barcelona_-O_-fomit-frame-pointer2019083020190816
17319004? ? ?? ? ?refgcc_-m64_-O_-fomit-frame-pointer2019083020190816
17571872? ? ?? ? ?refgcc_-m64_-march=core2_-O_-fomit-frame-pointer2019083020190816
17588904? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer2019083020190816
17753672? ? ?? ? ?refgcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv2019083020190816
17845324? ? ?? ? ?refgcc_-O_-fomit-frame-pointer2019083020190816
17854984? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer2019083020190816
17922180? ? ?? ? ?refgcc_-march=nocona_-O_-fomit-frame-pointer2019083020190816
31931252? ? ?? ? ?refcc2019083020190816
37329788? ? ?? ? ?refgcc2019083020190816
37981296? ? ?? ? ?refgcc_-funroll-loops2019083020190816

Test failure

Implementation: ref
Security model: unknown
Compiler: gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer
error 111

Number of similar (compiler,implementation) pairs: 3, namely:
CompilerImplementations
gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -O -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -Os -fomit-frame-pointer ref

Compiler output

Implementation: ref
Security model: unknown
Compiler: cc
measure.c: /usr/bin/ld: /home/z/supercop/supercop-20190816/supercop-data/gpu/amd64/lib/fastrandombytes.o: relocation R_X86_64_32 against `.bss' can not be used when making a PIE object; recompile with -fPIC
measure.c: /usr/bin/ld: final link failed: Nonrepresentable section on output
measure.c: collect2: error: ld returned 1 exit status

Number of similar (compiler,implementation) pairs: 103, 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=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: ref
Security model: unknown
Compiler: gcc -m64 -march=barcelona -O2 -fomit-frame-pointer
measure.c: /usr/bin/ld: /home/z/supercop/supercop-20190816/supercop-data/gpu/amd64/lib/fastrandombytes.o: relocation R_X86_64_32 against `.bss' can not be used when making a PIE object; recompile with -fPIC
measure.c: /usr/bin/ld: final link failed: Nonrepresentable section on output
measure.c: collect2: error: ld returned 1 exit status
measure.c: /usr/bin/ld: /home/z/supercop/supercop-20190816/supercop-data/gpu/amd64/lib/fastrandombytes.o: relocation R_X86_64_32 against `.bss' can not be used when making a PIE object; recompile with -fPIC
measure.c: /usr/bin/ld: final link failed: Nonrepresentable section on output
measure.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