Implementation notes: amd64, genji291, crypto_kem/lightsaber

Computer: genji291
Architecture: amd64
CPU ID: GenuineIntel-00050671-bfebfbff
SUPERCOP version: 20180818
Operation: crypto_kem
Primitive: lightsaber

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
933198	? ? ?	? ? ?	`portable`	`icc_-xCORE-AVX2_-O2_-fomit-frame-pointer`	20180821	20180818
979034	? ? ?	? ? ?	`portable`	`icc_-xCORE-AVX2_-O3_-fomit-frame-pointer`	20180821	20180818
1061704	? ? ?	? ? ?	`portable`	`icc_-xMIC-AVX512_-O2_-fomit-frame-pointer`	20180821	20180818
1156834	? ? ?	? ? ?	`portable`	`icc_-xCOMMON-AVX512_-O3_-fomit-frame-pointer`	20180821	20180818
1170134	? ? ?	? ? ?	`portable`	`icc_-xCOMMON-AVX512_-O2_-fomit-frame-pointer`	20180821	20180818
1184078	? ? ?	? ? ?	`portable`	`icc_-xSSE4.1_-O2_-fomit-frame-pointer`	20180821	20180818
1190028	? ? ?	? ? ?	`portable`	`icc_-xSSE4.2_-O2_-fomit-frame-pointer`	20180821	20180818
1207416	? ? ?	? ? ?	`portable`	`icc_-xSSE4.2_-O3_-fomit-frame-pointer`	20180821	20180818
1215914	? ? ?	? ? ?	`portable`	`icc_-xMIC-AVX512_-O3_-fomit-frame-pointer`	20180821	20180818
1239070	? ? ?	? ? ?	`portable`	`icc_-xSSE4.1_-O3_-fomit-frame-pointer`	20180821	20180818
1258698	? ? ?	? ? ?	`ref`	`icc_-xCORE-AVX2_-O2_-fomit-frame-pointer`	20180821	20180818
1315832	? ? ?	? ? ?	`ref`	`icc_-xCORE-AVX2_-O3_-fomit-frame-pointer`	20180821	20180818
1331288	? ? ?	? ? ?	`ref`	`icc_-xSSE4.2_-O2_-fomit-frame-pointer`	20180821	20180818
1331862	? ? ?	? ? ?	`ref`	`icc_-xSSE4.1_-O2_-fomit-frame-pointer`	20180821	20180818
1339702	? ? ?	? ? ?	`ref`	`icc_-xSSE4.2_-O3_-fomit-frame-pointer`	20180821	20180818
1497314	? ? ?	? ? ?	`portable`	`icc_-xAVX_-O2_-fomit-frame-pointer`	20180821	20180818
1530452	? ? ?	? ? ?	`portable`	`icc_-xCORE-AVX-I_-O2_-fomit-frame-pointer`	20180821	20180818
1536192	? ? ?	? ? ?	`portable`	`icc_-xCORE-AVX-I_-O3_-fomit-frame-pointer`	20180821	20180818
1543346	? ? ?	? ? ?	`portable`	`icc_-xAVX_-O3_-fomit-frame-pointer`	20180821	20180818
1576540	? ? ?	? ? ?	`portable`	`icc`	20180821	20180818
1608740	? ? ?	? ? ?	`ref`	`icc_-xMIC-AVX512_-O2_-fomit-frame-pointer`	20180821	20180818
1629306	? ? ?	? ? ?	`ref`	`icc_-xMIC-AVX512_-O3_-fomit-frame-pointer`	20180821	20180818
1662262	? ? ?	? ? ?	`ref`	`icc_-xAVX_-O2_-fomit-frame-pointer`	20180821	20180818
1665454	? ? ?	? ? ?	`ref`	`icc_-xCORE-AVX-I_-O2_-fomit-frame-pointer`	20180821	20180818
1676584	? ? ?	? ? ?	`ref`	`icc_-xCOMMON-AVX512_-O2_-fomit-frame-pointer`	20180821	20180818
1695036	? ? ?	? ? ?	`ref`	`icc_-xCORE-AVX-I_-O3_-fomit-frame-pointer`	20180821	20180818
1704038	? ? ?	? ? ?	`ref`	`icc`	20180821	20180818
1718920	? ? ?	? ? ?	`ref`	`icc_-xAVX_-O3_-fomit-frame-pointer`	20180821	20180818
1743112	? ? ?	? ? ?	`ref`	`icc_-xCOMMON-AVX512_-O3_-fomit-frame-pointer`	20180821	20180818
2196166	? ? ?	? ? ?	`ref`	`icc_-xSSE4.1_-O3_-fomit-frame-pointer`	20180821	20180818
4886070	? ? ?	? ? ?	`portable`	`icc_-no-vec`	20180821	20180818
6599656	? ? ?	? ? ?	`ref`	`icc_-no-vec`	20180821	20180818

Compiler output

Implementation: portable
Security model: unknown
Compiler: cc

Number of similar (compiler,implementation) pairs: 214, namely:

Compiler	Implementations
cc	portable
gcc	portable
gcc -O2 -fomit-frame-pointer	portable
gcc -O3 -fomit-frame-pointer	portable
gcc -O -fomit-frame-pointer	portable
gcc -Os -fomit-frame-pointer	portable
gcc -fno-schedule-insns -O2 -fomit-frame-pointer	portable
gcc -fno-schedule-insns -O3 -fomit-frame-pointer	portable
gcc -fno-schedule-insns -O -fomit-frame-pointer	portable
gcc -fno-schedule-insns -Os -fomit-frame-pointer	portable
gcc -funroll-loops	portable
gcc -funroll-loops -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -O -fomit-frame-pointer	portable
gcc -funroll-loops -Os -fomit-frame-pointer	portable
gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer	portable
gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -O -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -Os -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer	portable
gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer	portable
gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer	portable
gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer	portable
gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -march=k8 -O -fomit-frame-pointer	portable
gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer	portable
gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer	portable
gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer	portable
gcc -funroll-loops -march=nocona -O -fomit-frame-pointer	portable
gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer	portable
gcc -m64 -O2 -fomit-frame-pointer	portable
gcc -m64 -O3 -fomit-frame-pointer	portable
gcc -m64 -O -fomit-frame-pointer	portable
gcc -m64 -Os -fomit-frame-pointer	portable
gcc -m64 -march=core-avx-i -O2 -fomit-frame-pointer	portable
gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer	portable
gcc -m64 -march=core-avx-i -O -fomit-frame-pointer	portable
gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer	portable
gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer	portable
gcc -m64 -march=core-avx2 -O3 -fomit-frame-pointer	portable
gcc -m64 -march=core-avx2 -O -fomit-frame-pointer	portable
gcc -m64 -march=core-avx2 -Os -fomit-frame-pointer	portable
gcc -m64 -march=core2 -O2 -fomit-frame-pointer	portable
gcc -m64 -march=core2 -O3 -fomit-frame-pointer	portable
gcc -m64 -march=core2 -O -fomit-frame-pointer	portable
gcc -m64 -march=core2 -Os -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer	portable
gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer	portable
gcc -m64 -march=corei7-avx -O2 -fomit-frame-pointer	portable
gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer	portable
gcc -m64 -march=corei7-avx -O -fomit-frame-pointer	portable
gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer	portable
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer	portable
gcc -m64 -march=corei7 -O3 -fomit-frame-pointer	portable
gcc -m64 -march=corei7 -O -fomit-frame-pointer	portable
gcc -m64 -march=corei7 -Os -fomit-frame-pointer	portable
gcc -m64 -march=k8 -O2 -fomit-frame-pointer	portable
gcc -m64 -march=k8 -O3 -fomit-frame-pointer	portable
gcc -m64 -march=k8 -O -fomit-frame-pointer	portable
gcc -m64 -march=k8 -Os -fomit-frame-pointer	portable
gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer	portable
gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer	portable
gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer	portable
gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer	portable
gcc -m64 -march=nocona -O2 -fomit-frame-pointer	portable
gcc -m64 -march=nocona -O3 -fomit-frame-pointer	portable
gcc -m64 -march=nocona -O -fomit-frame-pointer	portable
gcc -m64 -march=nocona -Os -fomit-frame-pointer	portable
gcc -march=barcelona -O2 -fomit-frame-pointer	portable
gcc -march=barcelona -O3 -fomit-frame-pointer	portable
gcc -march=barcelona -O -fomit-frame-pointer	portable
gcc -march=barcelona -Os -fomit-frame-pointer	portable
gcc -march=k8 -O2 -fomit-frame-pointer	portable
gcc -march=k8 -O3 -fomit-frame-pointer	portable
gcc -march=k8 -O -fomit-frame-pointer	portable
gcc -march=k8 -Os -fomit-frame-pointer	portable
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv	portable
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv	portable
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv	portable
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv	portable
gcc -march=nocona -O2 -fomit-frame-pointer	portable
gcc -march=nocona -O3 -fomit-frame-pointer	portable
gcc -march=nocona -O -fomit-frame-pointer	portable
gcc -march=nocona -Os -fomit-frame-pointer	portable
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: portable
Security model: unknown
Compiler: gcc -m64 -march=barcelona -O2 -fomit-frame-pointer

try.c: /scratch_lustre_DDN7k/bdolbeaur/supercop-20180818/supercop-data/genji291/amd64/lib/knownrandombytes.o: In function `randombytes':
try.c: knownrandombytes.c:(.text+0x...): undefined reference to `_intel_fast_memcpy'
try.c: knownrandombytes.c:(.text+0x...): undefined reference to `_intel_fast_memset'
try.c: /scratch_lustre_DDN7k/bdolbeaur/supercop-20180818/supercop-data/genji291/amd64/lib/libsupercop.a(crypto_stream_chacha20_dolbeau_amd64_avx2-api.o): In function `crypto_stream_chacha20_dolbeau_amd64_avx2':
try.c: api.c:(.text+0x...): undefined reference to `__intel_mic_avx512f_memset'
try.c: /scratch_lustre_DDN7k/bdolbeaur/supercop-20180818/supercop-data/genji291/amd64/lib/libsupercop.a(crypto_stream_chacha20_dolbeau_amd64_avx2-chacha.o): In function `crypto_stream_chacha20_dolbeau_amd64_avx2_ECRYPT_keystream_bytes':
try.c: chacha.c:(.text+0x...): undefined reference to `__intel_mic_avx512f_memset'
try.c: collect2: error: ld returned 1 exit status
try.c: /scratch_lustre_DDN7k/bdolbeaur/supercop-20180818/supercop-data/genji291/amd64/lib/knownrandombytes.o: In function `randombytes':
try.c: knownrandombytes.c:(.text+0x...): undefined reference to `_intel_fast_memcpy'
try.c: knownrandombytes.c:(.text+0x...): undefined reference to `_intel_fast_memset'
try.c: /scratch_lustre_DDN7k/bdolbeaur/supercop-20180818/supercop-data/genji291/amd64/lib/libsupercop.a(crypto_stream_chacha20_dolbeau_amd64_avx2-api.o): In function `crypto_stream_chacha20_dolbeau_amd64_avx2':
try.c: api.c:(.text+0x...): undefined reference to `__intel_mic_avx512f_memset'
try.c: /scratch_lustre_DDN7k/bdolbeaur/supercop-20180818/supercop-data/genji291/amd64/lib/libsupercop.a(crypto_stream_chacha20_dolbeau_amd64_avx2-chacha.o): In function `crypto_stream_chacha20_dolbeau_amd64_avx2_ECRYPT_keystream_bytes':
try.c: chacha.c:(.text+0x...): undefined reference to `__intel_mic_avx512f_memset'
try.c: collect2: error: ld returned 1 exit status

Number of similar (compiler,implementation) pairs: 8, namely:

Compiler	Implementations
gcc -m64 -march=barcelona -O2 -fomit-frame-pointer	portable
gcc -m64 -march=barcelona -O3 -fomit-frame-pointer	portable
gcc -m64 -march=barcelona -O -fomit-frame-pointer	portable
gcc -m64 -march=barcelona -Os -fomit-frame-pointer	portable
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