Implementation notes: x86, bolero, crypto_stream/cryptmtv3

Computer: bolero
Architecture: x86
CPU ID: GenuineIntel-000406f1-bfebfbff
SUPERCOP version: 20190110
Operation: crypto_stream
Primitive: cryptmtv3

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
6372	`e/v3`	`gcc -funroll-loops -m32 -march=pentium4 -O2 -fomit-frame-pointer`	20170906	20170904
6372	`e/v3`	`gcc -funroll-loops -m32 -march=prescott -O2 -fomit-frame-pointer`	20170906	20170904
6380	`e/v3`	`gcc -funroll-loops -m32 -march=nocona -O2 -fomit-frame-pointer`	20170906	20170904
6416	`e/v3`	`gcc -funroll-loops -m32 -march=nocona -O3 -fomit-frame-pointer`	20170906	20170904
6416	`e/v3`	`gcc -funroll-loops -m32 -march=prescott -O3 -fomit-frame-pointer`	20170906	20170904
6420	`e/v3`	`gcc -funroll-loops -m32 -march=pentium4 -O3 -fomit-frame-pointer`	20170906	20170904
6488	`e/v3`	`gcc -funroll-loops -m32 -march=barcelona -O -fomit-frame-pointer`	20170906	20170904
6516	`e/v3`	`gcc -funroll-loops -m32 -march=k8 -O -fomit-frame-pointer`	20170906	20170904
6528	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-m -O2 -fomit-frame-pointer`	20170906	20170904
6532	`e/v3`	`gcc -funroll-loops -m32 -march=pentium4 -O -fomit-frame-pointer`	20170906	20170904
6544	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-m -O -fomit-frame-pointer`	20170906	20170904
6552	`e/v3`	`gcc -funroll-loops -m32 -march=nocona -O -fomit-frame-pointer`	20170906	20170904
6552	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-m -O3 -fomit-frame-pointer`	20170906	20170904
6568	`e/v3`	`gcc -funroll-loops -m32 -march=prescott -O -fomit-frame-pointer`	20170906	20170904
6628	`e/v3`	`gcc -funroll-loops -m32 -march=k8 -O2 -fomit-frame-pointer`	20170906	20170904
6632	`e/v3`	`gcc -funroll-loops -m32 -march=barcelona -O2 -fomit-frame-pointer`	20170906	20170904
6648	`e/v3`	`gcc -funroll-loops -m32 -march=k8 -O3 -fomit-frame-pointer`	20170906	20170904
6708	`e/v3`	`gcc -funroll-loops -m32 -march=barcelona -O3 -fomit-frame-pointer`	20170906	20170904
6804	`e/v3`	`gcc -m32 -march=corei7 -O3 -fomit-frame-pointer`	20170906	20170904
6832	`e/v3`	`gcc -m32 -march=pentium4 -O3 -fomit-frame-pointer`	20170906	20170904
6836	`e/v3`	`gcc -m32 -march=nocona -O3 -fomit-frame-pointer`	20170906	20170904
6848	`e/v3`	`gcc -m32 -march=prescott -O3 -fomit-frame-pointer`	20170906	20170904
6864	`e/v3`	`gcc -m32 -march=core2 -msse4 -O3 -fomit-frame-pointer`	20170906	20170904
6884	`e/v3`	`gcc -m32 -march=core2 -O3 -fomit-frame-pointer`	20170906	20170904
6884	`e/v3`	`gcc -m32 -march=corei7-avx -O3 -fomit-frame-pointer`	20170906	20170904
6888	`e/v3`	`gcc -m32 -march=core-avx-i -O3 -fomit-frame-pointer`	20170906	20170904
6888	`e/v3`	`gcc -m32 -march=core2 -msse4.1 -O3 -fomit-frame-pointer`	20170906	20170904
6888	`e/v3`	`gcc -m32 -march=pentium4 -O2 -fomit-frame-pointer`	20170906	20170904
6892	`e/v3`	`gcc -m32 -march=core2 -msse4.1 -O2 -fomit-frame-pointer`	20170906	20170904
6896	`e/v3`	`gcc -m32 -march=core-avx2 -O3 -fomit-frame-pointer`	20170906	20170904
6896	`e/v3`	`gcc -m32 -march=core2 -msse4 -O2 -fomit-frame-pointer`	20170906	20170904
6896	`e/v3`	`gcc -m32 -march=corei7 -O2 -fomit-frame-pointer`	20170906	20170904
6896	`e/v3`	`gcc -m32 -march=nocona -O2 -fomit-frame-pointer`	20170906	20170904
6900	`e/v3`	`gcc -m32 -march=native -mtune=native -O3 -fomit-frame-pointer`	20170906	20170904
6900	`e/v3`	`gcc -m32 -march=prescott -O2 -fomit-frame-pointer`	20170906	20170904
6904	`e/v3`	`gcc -m32 -march=core-avx2 -O2 -fomit-frame-pointer`	20170906	20170904
6904	`e/v3`	`gcc -m32 -march=core2 -O2 -fomit-frame-pointer`	20170906	20170904
6904	`e/v3`	`gcc -m32 -march=k8 -O2 -fomit-frame-pointer`	20170906	20170904
6912	`e/v3`	`gcc -m32 -march=native -mtune=native -O2 -fomit-frame-pointer`	20170906	20170904
6916	`e/v3`	`gcc -m32 -march=core-avx-i -O2 -fomit-frame-pointer`	20170906	20170904
6928	`e/v3`	`gcc -m32 -march=nocona -O -fomit-frame-pointer`	20170906	20170904
6928	`e/v3`	`gcc -m32 -march=prescott -O -fomit-frame-pointer`	20170906	20170904
6940	`e/v3`	`gcc -m32 -march=corei7-avx -O2 -fomit-frame-pointer`	20170906	20170904
6940	`e/v3`	`gcc -m32 -march=corei7 -O -fomit-frame-pointer`	20170906	20170904
6940	`e/v3`	`gcc -m32 -march=pentium4 -O -fomit-frame-pointer`	20170906	20170904
6944	`e/v3`	`gcc -m32 -march=core2 -O -fomit-frame-pointer`	20170906	20170904
6944	`e/v3`	`gcc -m32 -march=core2 -msse4.1 -O -fomit-frame-pointer`	20170906	20170904
6948	`e/v3`	`gcc -m32 -march=barcelona -O -fomit-frame-pointer`	20170906	20170904
6952	`e/v3`	`gcc -m32 -march=core-avx2 -O -fomit-frame-pointer`	20170906	20170904
6952	`e/v3`	`gcc -m32 -march=native -mtune=native -O -fomit-frame-pointer`	20170906	20170904
6956	`e/v3`	`gcc -m32 -march=core2 -msse4 -O -fomit-frame-pointer`	20170906	20170904
6960	`e/v3`	`gcc -m32 -march=corei7-avx -O -fomit-frame-pointer`	20170906	20170904
6968	`e/v3`	`gcc -m32 -march=core-avx-i -O -fomit-frame-pointer`	20170906	20170904
6988	`e/v3`	`gcc -m32 -march=k8 -O -fomit-frame-pointer`	20170906	20170904
7016	`e/v3`	`gcc -m32 -march=pentium-m -O -fomit-frame-pointer`	20170906	20170904
7056	`e/v3`	`gcc -m32 -march=pentium-m -O3 -fomit-frame-pointer`	20170906	20170904
7072	`e/v3`	`gcc -m32 -march=barcelona -O3 -fomit-frame-pointer`	20170906	20170904
7084	`e/v3`	`gcc -m32 -march=k8 -O3 -fomit-frame-pointer`	20170906	20170904
7092	`e/v3`	`gcc -m32 -march=barcelona -O2 -fomit-frame-pointer`	20170906	20170904
7104	`e/v3`	`gcc -m32 -march=pentium-m -O2 -fomit-frame-pointer`	20170906	20170904
7120	`e/v3`	`gcc -m32 -march=corei7-avx -Os -fomit-frame-pointer`	20170906	20170904
7124	`e/v3`	`gcc -m32 -march=core-avx-i -Os -fomit-frame-pointer`	20170906	20170904
7132	`e/v3`	`gcc -m32 -march=native -mtune=native -Os -fomit-frame-pointer`	20170906	20170904
7144	`e/v3`	`gcc -m32 -march=core-avx2 -Os -fomit-frame-pointer`	20170906	20170904
7212	`e/v3`	`gcc -m32 -march=prescott -Os -fomit-frame-pointer`	20170906	20170904
7224	`e/v3`	`gcc -funroll-loops -m32 -march=nocona -Os -fomit-frame-pointer`	20170906	20170904
7224	`e/v3`	`gcc -funroll-loops -m32 -march=prescott -Os -fomit-frame-pointer`	20170906	20170904
7236	`e/v3`	`gcc -m32 -march=corei7 -Os -fomit-frame-pointer`	20170906	20170904
7236	`e/v3`	`gcc -m32 -march=nocona -Os -fomit-frame-pointer`	20170906	20170904
7240	`e/v3`	`gcc -m32 -march=core2 -msse4.1 -Os -fomit-frame-pointer`	20170906	20170904
7240	`e/v3`	`gcc -m32 -march=core2 -msse4 -Os -fomit-frame-pointer`	20170906	20170904
7244	`e/v3`	`gcc -m32 -march=core2 -Os -fomit-frame-pointer`	20170906	20170904
7296	`e/v3`	`gcc -funroll-loops -m32 -march=pentium4 -Os -fomit-frame-pointer`	20170906	20170904
7296	`e/v3`	`gcc -m32 -march=pentium4 -Os -fomit-frame-pointer`	20170906	20170904
7424	`e/v3`	`gcc -funroll-loops -m32 -march=k8 -Os -fomit-frame-pointer`	20170906	20170904
7448	`e/v3`	`gcc -m32 -march=k8 -Os -fomit-frame-pointer`	20170906	20170904
7464	`e/v3`	`gcc -funroll-loops -m32 -march=barcelona -Os -fomit-frame-pointer`	20170906	20170904
7500	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-m -Os -fomit-frame-pointer`	20170906	20170904
7512	`e/v3`	`gcc -m32 -march=barcelona -Os -fomit-frame-pointer`	20170906	20170904
7516	`e/v3`	`gcc -m32 -march=pentium-m -Os -fomit-frame-pointer`	20170906	20170904
9116	`e/v3`	`gcc -funroll-loops -m32 -O3 -fomit-frame-pointer`	20170906	20170904
9188	`e/v3`	`gcc -m32 -O3 -fomit-frame-pointer`	20170906	20170904
9236	`e/v3`	`gcc -funroll-loops -m32 -march=i386 -O2 -fomit-frame-pointer`	20170906	20170904
9256	`e/v3`	`gcc -funroll-loops -m32 -march=athlon -O2 -fomit-frame-pointer`	20170906	20170904
9268	`e/v3`	`gcc -funroll-loops -m32 -march=i386 -O3 -fomit-frame-pointer`	20170906	20170904
9292	`e/v3`	`gcc -funroll-loops -m32 -march=i486 -O2 -fomit-frame-pointer`	20170906	20170904
9316	`e/v3`	`gcc -m32 -march=i486 -O3 -fomit-frame-pointer`	20170906	20170904
9324	`e/v3`	`gcc -funroll-loops -m32 -march=i486 -O3 -fomit-frame-pointer`	20170906	20170904
9324	`e/v3`	`gcc -m32 -march=i386 -O3 -fomit-frame-pointer`	20170906	20170904
9340	`e/v3`	`gcc -funroll-loops -m32 -O2 -fomit-frame-pointer`	20170906	20170904
9364	`e/v3`	`gcc -funroll-loops -m32 -march=athlon -O -fomit-frame-pointer`	20170906	20170904
9368	`e/v3`	`gcc -funroll-loops -m32 -march=athlon -O3 -fomit-frame-pointer`	20170906	20170904
9372	`e/v3`	`gcc -funroll-loops -m32 -march=pentium -O3 -fomit-frame-pointer`	20170906	20170904
9380	`e/v3`	`gcc -funroll-loops -m32 -march=i486 -O -fomit-frame-pointer`	20170906	20170904
9396	`e/v3`	`gcc -m32 -march=athlon -O3 -fomit-frame-pointer`	20170906	20170904
9400	`e/v3`	`gcc -m32 -march=pentium -O3 -fomit-frame-pointer`	20170906	20170904
9404	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-mmx -O3 -fomit-frame-pointer`	20170906	20170904
9404	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-mmx -O -fomit-frame-pointer`	20170906	20170904
9408	`e/v3`	`gcc -m32 -march=pentium-mmx -O3 -fomit-frame-pointer`	20170906	20170904
9448	`e/v3`	`gcc -funroll-loops -m32 -march=i386 -O -fomit-frame-pointer`	20170906	20170904
9448	`e/v3`	`gcc -funroll-loops -m32 -march=pentium -O -fomit-frame-pointer`	20170906	20170904
9456	`e/v3`	`gcc -funroll-loops -m32 -march=pentiumpro -O3 -fomit-frame-pointer`	20170906	20170904
9484	`e/v3`	`gcc -funroll-loops -m32 -march=pentium2 -O3 -fomit-frame-pointer`	20170906	20170904
9492	`e/v3`	`gcc -m32 -march=pentium2 -O3 -fomit-frame-pointer`	20170906	20170904
9500	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-mmx -O2 -fomit-frame-pointer`	20170906	20170904
9504	`e/v3`	`gcc -funroll-loops -m32 -march=k6-3 -O3 -fomit-frame-pointer`	20170906	20170904
9504	`e/v3`	`gcc -funroll-loops -m32 -march=k6 -O3 -fomit-frame-pointer`	20170906	20170904
9508	`e/v3`	`gcc -m32 -march=pentiumpro -O3 -fomit-frame-pointer`	20170906	20170904
9516	`e/v3`	`gcc -funroll-loops -m32 -O -fomit-frame-pointer`	20170906	20170904
9516	`e/v3`	`gcc -funroll-loops -m32 -march=pentium -O2 -fomit-frame-pointer`	20170906	20170904
9524	`e/v3`	`gcc -funroll-loops -m32 -march=pentiumpro -O -fomit-frame-pointer`	20170906	20170904
9544	`e/v3`	`gcc -m32 -march=k6 -O3 -fomit-frame-pointer`	20170906	20170904
9548	`e/v3`	`gcc -funroll-loops -m32 -march=k6-3 -O2 -fomit-frame-pointer`	20170906	20170904
9548	`e/v3`	`gcc -funroll-loops -m32 -march=k6-3 -O -fomit-frame-pointer`	20170906	20170904
9552	`e/v3`	`gcc -m32 -march=k6-3 -O3 -fomit-frame-pointer`	20170906	20170904
9556	`e/v3`	`gcc -funroll-loops -m32 -march=k6-2 -O3 -fomit-frame-pointer`	20170906	20170904
9556	`e/v3`	`gcc -funroll-loops -m32 -march=k6 -O2 -fomit-frame-pointer`	20170906	20170904
9560	`e/v3`	`gcc -funroll-loops -m32 -march=pentium2 -O -fomit-frame-pointer`	20170906	20170904
9568	`e/v3`	`gcc -funroll-loops -m32 -march=k6 -O -fomit-frame-pointer`	20170906	20170904
9584	`e/v3`	`gcc -funroll-loops -m32 -march=k6-2 -O -fomit-frame-pointer`	20170906	20170904
9584	`e/v3`	`gcc -m32 -march=k6-2 -O3 -fomit-frame-pointer`	20170906	20170904
9608	`e/v3`	`gcc -funroll-loops -m32 -march=k6-2 -O2 -fomit-frame-pointer`	20170906	20170904
9652	`e/v3`	`gcc -funroll-loops -m32 -march=pentium2 -O2 -fomit-frame-pointer`	20170906	20170904
9672	`e/v3`	`gcc -funroll-loops -m32 -march=pentiumpro -O2 -fomit-frame-pointer`	20170906	20170904
10800	`e/v3`	`gcc -m32 -O2 -fomit-frame-pointer`	20170906	20170904
10900	`e/v3`	`gcc -m32 -march=athlon -O2 -fomit-frame-pointer`	20170906	20170904
10940	`e/v3`	`gcc -m32 -march=i486 -O2 -fomit-frame-pointer`	20170906	20170904
10968	`e/v3`	`gcc -m32 -march=i386 -O2 -fomit-frame-pointer`	20170906	20170904
11104	`e/v3`	`gcc -m32 -march=pentium -O2 -fomit-frame-pointer`	20170906	20170904
11204	`e/v3`	`gcc -m32 -march=pentium2 -O2 -fomit-frame-pointer`	20170906	20170904
11204	`e/v3`	`gcc -m32 -march=pentiumpro -O2 -fomit-frame-pointer`	20170906	20170904
11224	`e/v3`	`gcc -m32 -march=pentium -Os -fomit-frame-pointer`	20170906	20170904
11240	`e/v3`	`gcc -m32 -march=pentium-mmx -Os -fomit-frame-pointer`	20170906	20170904
11260	`e/v3`	`gcc -funroll-loops -m32 -march=pentium -Os -fomit-frame-pointer`	20170906	20170904
11272	`e/v3`	`gcc -funroll-loops -m32 -Os -fomit-frame-pointer`	20170906	20170904
11280	`e/v3`	`gcc -funroll-loops -m32 -march=athlon -Os -fomit-frame-pointer`	20170906	20170904
11280	`e/v3`	`gcc -funroll-loops -m32 -march=pentium-mmx -Os -fomit-frame-pointer`	20170906	20170904
11284	`e/v3`	`gcc -m32 -Os -fomit-frame-pointer`	20170906	20170904
11300	`e/v3`	`gcc -m32 -march=i486 -O -fomit-frame-pointer`	20170906	20170904
11308	`e/v3`	`gcc -m32 -march=athlon -Os -fomit-frame-pointer`	20170906	20170904
11328	`e/v3`	`gcc -funroll-loops -m32 -march=k6-2 -Os -fomit-frame-pointer`	20170906	20170904
11332	`e/v3`	`gcc -m32 -march=k6-3 -O2 -fomit-frame-pointer`	20170906	20170904
11336	`e/v3`	`gcc -funroll-loops -m32 -march=k6-3 -Os -fomit-frame-pointer`	20170906	20170904
11344	`e/v3`	`gcc -m32 -march=k6-2 -O2 -fomit-frame-pointer`	20170906	20170904
11364	`e/v3`	`gcc -funroll-loops -m32 -march=k6 -Os -fomit-frame-pointer`	20170906	20170904
11368	`e/v3`	`gcc -m32 -march=pentium-mmx -O -fomit-frame-pointer`	20170906	20170904
11372	`e/v3`	`gcc -m32 -march=k6 -O2 -fomit-frame-pointer`	20170906	20170904
11380	`e/v3`	`gcc -m32 -march=i386 -O -fomit-frame-pointer`	20170906	20170904
11392	`e/v3`	`gcc -m32 -march=pentium -O -fomit-frame-pointer`	20170906	20170904
11412	`e/v3`	`gcc -m32 -march=k6-3 -Os -fomit-frame-pointer`	20170906	20170904
11416	`e/v3`	`gcc -m32 -march=i486 -Os -fomit-frame-pointer`	20170906	20170904
11436	`e/v3`	`gcc -m32 -march=k6 -Os -fomit-frame-pointer`	20170906	20170904
11448	`e/v3`	`gcc -m32 -march=i386 -Os -fomit-frame-pointer`	20170906	20170904
11452	`e/v3`	`gcc -m32 -march=k6-2 -Os -fomit-frame-pointer`	20170906	20170904
11468	`e/v3`	`gcc -funroll-loops -m32 -march=i386 -Os -fomit-frame-pointer`	20170906	20170904
11480	`e/v3`	`gcc -funroll-loops -m32 -march=i486 -Os -fomit-frame-pointer`	20170906	20170904
11588	`e/v3`	`gcc -funroll-loops -m32 -march=pentiumpro -Os -fomit-frame-pointer`	20170906	20170904
11644	`e/v3`	`gcc -funroll-loops -m32 -march=pentium2 -Os -fomit-frame-pointer`	20170906	20170904
11680	`e/v3`	`gcc -m32 -march=pentium-mmx -O2 -fomit-frame-pointer`	20170906	20170904
11688	`e/v3`	`gcc -m32 -march=pentiumpro -Os -fomit-frame-pointer`	20170906	20170904
11708	`e/v3`	`gcc -m32 -march=pentium2 -Os -fomit-frame-pointer`	20170906	20170904
12004	`e/v3`	`gcc -m32 -march=athlon -O -fomit-frame-pointer`	20170906	20170904
12048	`e/v3`	`gcc -m32 -O -fomit-frame-pointer`	20170906	20170904
12068	`e/v3`	`gcc -m32 -march=pentiumpro -O -fomit-frame-pointer`	20170906	20170904
12084	`e/v3`	`gcc -m32 -march=pentium2 -O -fomit-frame-pointer`	20170906	20170904
12236	`e/v3`	`gcc -m32 -march=k6-2 -O -fomit-frame-pointer`	20170906	20170904
12244	`e/v3`	`gcc -m32 -march=k6 -O -fomit-frame-pointer`	20170906	20170904
12292	`e/v3`	`gcc -m32 -march=k6-3 -O -fomit-frame-pointer`	20170906	20170904

Compiler output

Implementation: crypto_stream/cryptmtv3/e/v3
Compiler: gcc -funroll-loops -m32 -march=pentium3 -O2 -fomit-frame-pointer

cryptmt-v3.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/xmmintrin.h:1249:0,
cryptmt-v3.c: from /home/djb/benchmarking/supercop-20170904/supercop-data/bolero/x86/include/ecrypt-config.h:296,
cryptmt-v3.c: from e/cryptmt-v3.c:9,
cryptmt-v3.c: from cryptmt-v3.c:2:
cryptmt-v3.c: e/sse2.c: In function '_mm_recursion':
cryptmt-v3.c: /usr/lib/gcc/x86_64-linux-gnu/5/include/emmintrin.h:1286:1: error: inlining failed in call to always_inline '_mm_xor_si128': target specific option mismatch
cryptmt-v3.c: _mm_xor_si128 (__m128i __A, __m128i __B)
cryptmt-v3.c: ^
cryptmt-v3.c: In file included from e/cryptmt-v3.c:66:0,
cryptmt-v3.c: from cryptmt-v3.c:2:
cryptmt-v3.c: e/sse2.c:39:7: error: called from here
cryptmt-v3.c: c = _mm_xor_si128(c, a);
cryptmt-v3.c: ^
cryptmt-v3.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/xmmintrin.h:1249:0,
cryptmt-v3.c: from /home/djb/benchmarking/supercop-20170904/supercop-data/bolero/x86/include/ecrypt-config.h:296,
cryptmt-v3.c: from e/cryptmt-v3.c:9,
cryptmt-v3.c: from cryptmt-v3.c:2:
cryptmt-v3.c: /usr/lib/gcc/x86_64-linux-gnu/5/include/emmintrin.h:1286:1: error: inlining failed in call to always_inline '_mm_xor_si128': target specific option mismatch
cryptmt-v3.c: _mm_xor_si128 (__m128i __A, __m128i __B)
cryptmt-v3.c: ^
cryptmt-v3.c: In file included from e/cryptmt-v3.c:66:0,
cryptmt-v3.c: from cryptmt-v3.c:2:
cryptmt-v3.c: e/sse2.c:38:7: error: called from here
cryptmt-v3.c: c = _mm_xor_si128(c, b);
cryptmt-v3.c: ^
cryptmt-v3.c: ...

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

Compiler	Implementations
gcc -funroll-loops -m32 -march=pentium3 -O2 -fomit-frame-pointer	e/v3
gcc -funroll-loops -m32 -march=pentium3 -O3 -fomit-frame-pointer	e/v3
gcc -funroll-loops -m32 -march=pentium3 -O -fomit-frame-pointer	e/v3
gcc -funroll-loops -m32 -march=pentium3 -Os -fomit-frame-pointer	e/v3
gcc -m32 -march=pentium3 -O2 -fomit-frame-pointer	e/v3
gcc -m32 -march=pentium3 -O3 -fomit-frame-pointer	e/v3
gcc -m32 -march=pentium3 -O -fomit-frame-pointer	e/v3
gcc -m32 -march=pentium3 -Os -fomit-frame-pointer	e/v3