Implementation notes: amd64, genji154, crypto_scalarmult/nistp256

Computer: genji154
Architecture: amd64
CPU ID: GenuineIntel-00050671-bfebfbff
SUPERCOP version: 20170228
Operation: crypto_scalarmult
Primitive: nistp256
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
4986735? ? ?? ? ?mj32icc_-xMIC-AVX512_-O3_-fomit-frame-pointer2017022620170105
5021471? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer2017022620170105
5024682? ? ?? ? ?mj32gcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer2017022620170105
5117203? ? ?? ? ?mj32icc_-xMIC-AVX512_-O2_-fomit-frame-pointer2017022620170105
5146804? ? ?? ? ?mj32gcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer2017022620170105
5154942? ? ?? ? ?mj32gcc_-funroll-loops_-O2_-fomit-frame-pointer2017022620170105
5158569? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer2017022620170105
5162300? ? ?? ? ?mj32icc2017022620170105
5165290? ? ?? ? ?mj32gcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer2017022620170105
5166187? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017022620170105
5284253? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer2017022620170105
5310539? ? ?? ? ?mj32gcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer2017022620170105
5520697? ? ?? ? ?mj32clang_-O3_-fomit-frame-pointer_-Qunused-arguments2017041020170228
5521932? ? ?? ? ?mj32clang_-mcpu=native_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2017041020170228
5526495? ? ?? ? ?mj32clang_-mcpu=cortex-a9_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2017041020170228
5560243? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4.1_-O3_-fomit-frame-pointer2017022620170105
5561036? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4_-O3_-fomit-frame-pointer2017022620170105
5562726? ? ?? ? ?mj32gcc_-m64_-march=corei7_-O3_-fomit-frame-pointer2017022620170105
5587140? ? ?? ? ?mj32clang_-mcpu=cortex-a8_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2017041020170228
5706714? ? ?? ? ?mj32gcc_-m64_-march=core2_-O3_-fomit-frame-pointer2017022620170105
5738525? ? ?? ? ?mj32gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv2017022620170105
5778123? ? ?? ? ?mj32gcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer2017022620170105
5801419? ? ?? ? ?mj32gcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer2017022620170105
5823571? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer2017022620170105
5910047? ? ?? ? ?mj32gcc_-m64_-march=nocona_-O3_-fomit-frame-pointer2017022620170105
5911893? ? ?? ? ?mj32gcc_-march=nocona_-O3_-fomit-frame-pointer2017022620170105
6063746? ? ?? ? ?mj32clang_-O3_-fwrapv_-march=native_-fomit-frame-pointer_-Qunused-arguments2017041020170228
6110780? ? ?? ? ?mj32clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments2017041020170228
6329687? ? ?? ? ?mj32icc_-no-vec2017022620170105
6702514? ? ?? ? ?mj32clang_-O3_-fwrapv_-mavx_-maes_-mpclmul_-fomit-frame-pointer_-Qunused-arguments2017041020170228
6726759? ? ?? ? ?mj32clang_-O3_-fwrapv_-mavx_-fomit-frame-pointer_-Qunused-arguments2017041020170228
7356115? ? ?? ? ?mj32gcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer2017022620170105
7391332? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-O_-fomit-frame-pointer2017022620170105
7403422? ? ?? ? ?mj32gcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer2017022620170105
7418983? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer2017022620170105
7425431? ? ?? ? ?mj32gcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer2017022620170105
7434219? ? ?? ? ?mj32gcc_-funroll-loops_-O_-fomit-frame-pointer2017022620170105
7438353? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer2017022620170105
7487129? ? ?? ? ?mj32gcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer2017022620170105
7521462? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer2017022620170105
7553637? ? ?? ? ?mj32gcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer2017022620170105
7561437? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017022620170105
7569575? ? ?? ? ?mj32gcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer2017022620170105
7578064? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer2017022620170105
7677488? ? ?? ? ?mj32gcc_-march=barcelona_-O3_-fomit-frame-pointer2017022620170105
7709195? ? ?? ? ?mj32gcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017022620170105
7720895? ? ?? ? ?mj32gcc_-m64_-march=k8_-O3_-fomit-frame-pointer2017022620170105
7730229? ? ?? ? ?mj32gcc_-m64_-march=core-avx2_-O3_-fomit-frame-pointer2017022620170105
7751146? ? ?? ? ?mj32gcc_-march=k8_-O3_-fomit-frame-pointer2017022620170105
8065434? ? ?? ? ?mj32clang_-O3_-fwrapv_-mavx2_-fomit-frame-pointer_-Qunused-arguments2017041020170228
8083335? ? ?? ? ?mj32clang_-O3_-fwrapv_-march=x86-64_-mcpu=core-avx2_-mavx2_-maes_-mpclmul_-fomit-frame-pointer_-Qunused-arguments2017041020170228
8522644? ? ?? ? ?mj32gcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer2017022620170105
8539804? ? ?? ? ?mj32gcc_-funroll-loops_-O3_-fomit-frame-pointer2017022620170105
8555664? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer2017022620170105
8682440? ? ?? ? ?mj32gcc_-m64_-march=core-avx-i_-O3_-fomit-frame-pointer2017022620170105
8687016? ? ?? ? ?mj32gcc_-m64_-march=corei7-avx_-O3_-fomit-frame-pointer2017022620170105
8691917? ? ?? ? ?mj32gcc_-fno-schedule-insns_-O3_-fomit-frame-pointer2017022620170105
8724586? ? ?? ? ?mj32gcc_-m64_-O3_-fomit-frame-pointer2017022620170105
8797568? ? ?? ? ?mj32gcc_-O3_-fomit-frame-pointer2017022620170105
8955635? ? ?? ? ?mj32gcc_-march=nocona_-O2_-fomit-frame-pointer2017022620170105
9041422? ? ?? ? ?mj32gcc_-m64_-march=nocona_-O2_-fomit-frame-pointer2017022620170105
9172644? ? ?? ? ?mj32gcc_-march=barcelona_-O2_-fomit-frame-pointer2017022620170105
9174126? ? ?? ? ?mj32gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv2017022620170105
9176791? ? ?? ? ?mj32gcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer2017022620170105
9218027? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer2017022620170105
9244664? ? ?? ? ?mj32gcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017022620170105
9262162? ? ?? ? ?mj32gcc_-m64_-march=core2_-O2_-fomit-frame-pointer2017022620170105
9262487? ? ?? ? ?mj32gcc_-march=k8_-O2_-fomit-frame-pointer2017022620170105
9269819? ? ?? ? ?mj32gcc_-m64_-march=corei7_-O2_-fomit-frame-pointer2017022620170105
9273121? ? ?? ? ?mj32gcc_-m64_-march=k8_-O2_-fomit-frame-pointer2017022620170105
9274148? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer2017022620170105
9284704? ? ?? ? ?mj32gcc_-m64_-march=corei7-avx_-O2_-fomit-frame-pointer2017022620170105
9303827? ? ?? ? ?mj32gcc_-fno-schedule-insns_-O2_-fomit-frame-pointer2017022620170105
9336119? ? ?? ? ?mj32gcc_-m64_-O2_-fomit-frame-pointer2017022620170105
9396309? ? ?? ? ?mj32gcc_-O2_-fomit-frame-pointer2017022620170105
9533303? ? ?? ? ?mj32gcc_-m64_-march=core-avx2_-O2_-fomit-frame-pointer2017022620170105
9545263? ? ?? ? ?mj32gcc_-m64_-march=core-avx-i_-O2_-fomit-frame-pointer2017022620170105
10015707? ? ?? ? ?mj32gcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer2017022620170105
10021141? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer2017022620170105
10022662? ? ?? ? ?mj32gcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer2017022620170105
10032919? ? ?? ? ?mj32gcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer2017022620170105
10039367? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017022620170105
10039744? ? ?? ? ?mj32gcc_-funroll-loops_-Os_-fomit-frame-pointer2017022620170105
10040745? ? ?? ? ?mj32gcc_-march=nocona_-Os_-fomit-frame-pointer2017022620170105
10043865? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer2017022620170105
10044177? ? ?? ? ?mj32gcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer2017022620170105
10057736? ? ?? ? ?mj32gcc_-fno-schedule-insns_-Os_-fomit-frame-pointer2017022620170105
10078237? ? ?? ? ?mj32gcc_-march=barcelona_-Os_-fomit-frame-pointer2017022620170105
10082098? ? ?? ? ?mj32gcc_-Os_-fomit-frame-pointer2017022620170105
10084659? ? ?? ? ?mj32gcc_-m64_-Os_-fomit-frame-pointer2017022620170105
10107721? ? ?? ? ?mj32gcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer2017022620170105
10113597? ? ?? ? ?mj32gcc_-m64_-march=core-avx2_-Os_-fomit-frame-pointer2017022620170105
10125271? ? ?? ? ?mj32gcc_-march=k8_-Os_-fomit-frame-pointer2017022620170105
10133318? ? ?? ? ?mj32gcc_-m64_-march=nocona_-Os_-fomit-frame-pointer2017022620170105
10141950? ? ?? ? ?mj32gcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017022620170105
10209004? ? ?? ? ?mj32gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv2017022620170105
10220951? ? ?? ? ?mj32gcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer2017022620170105
10224474? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer2017022620170105
10228296? ? ?? ? ?mj32gcc_-m64_-march=corei7_-Os_-fomit-frame-pointer2017022620170105
10228803? ? ?? ? ?mj32gcc_-m64_-march=core2_-Os_-fomit-frame-pointer2017022620170105
10232976? ? ?? ? ?mj32gcc_-m64_-march=core-avx-i_-Os_-fomit-frame-pointer2017022620170105
10248511? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer2017022620170105
10287797? ? ?? ? ?mj32gcc_-m64_-march=k8_-Os_-fomit-frame-pointer2017022620170105
10288447? ? ?? ? ?mj32gcc_-m64_-march=corei7-avx_-Os_-fomit-frame-pointer2017022620170105
15200185? ? ?? ? ?mj32gcc_-fno-schedule-insns_-O_-fomit-frame-pointer2017022620170105
15218125? ? ?? ? ?mj32gcc_-O_-fomit-frame-pointer2017022620170105
15322424? ? ?? ? ?mj32gcc_-m64_-O_-fomit-frame-pointer2017022620170105
15489890? ? ?? ? ?mj32gcc_-m64_-march=core-avx2_-O_-fomit-frame-pointer2017022620170105
15532621? ? ?? ? ?mj32gcc_-march=barcelona_-O_-fomit-frame-pointer2017022620170105
15701829? ? ?? ? ?mj32gcc_-m64_-march=barcelona_-O_-fomit-frame-pointer2017022620170105
15868684? ? ?? ? ?mj32gcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer2017022620170105
15977195? ? ?? ? ?mj32gcc_-m64_-march=k8_-O_-fomit-frame-pointer2017022620170105
16132571? ? ?? ? ?mj32gcc_-march=k8_-O_-fomit-frame-pointer2017022620170105
16321955? ? ?? ? ?mj32gcc_-march=nocona_-O_-fomit-frame-pointer2017022620170105
16400189? ? ?? ? ?mj32gcc_-m64_-march=nocona_-O_-fomit-frame-pointer2017022620170105
16544008? ? ?? ? ?mj32gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv2017022620170105
16769584? ? ?? ? ?mj32gcc_-m64_-march=core-avx-i_-O_-fomit-frame-pointer2017022620170105
16772444? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer2017022620170105
16782350? ? ?? ? ?mj32gcc_-m64_-march=core2_-O_-fomit-frame-pointer2017022620170105
16783559? ? ?? ? ?mj32gcc_-m64_-march=corei7-avx_-O_-fomit-frame-pointer2017022620170105
16784378? ? ?? ? ?mj32gcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer2017022620170105
16973970? ? ?? ? ?mj32gcc_-m64_-march=corei7_-O_-fomit-frame-pointer2017022620170105
89168261? ? ?? ? ?mj32gcc_-funroll-loops2017022620170105
89223537? ? ?? ? ?mj32gcc2017022620170105
90208872? ? ?? ? ?mj32cc2017022620170105

Compiler output

Implementation: crypto_scalarmult/nistp256/mj32
Compiler: clang -O3 -fomit-frame-pointer -Qunused-arguments
gep256.c: gep256.c:83:28: warning: sizeof on array function parameter will return size of 'fe *' (aka 'crypto_uint32 (*)[8]') instead of 'gep256' (aka 'fe [3]') [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:78:29: note: declared here
gep256.c: static int isneutral(gep256 p) {
gep256.c: ^
gep256.c: gep256.c:92:28: warning: sizeof on array function parameter will return size of 'fe *' (aka 'crypto_uint32 (*)[8]') instead of 'gep256_precomp' (aka 'fe [2]') [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:87:45: note: declared here
gep256.c: static int isneutral_precomp(gep256_precomp p) {
gep256.c: ^
gep256.c: 2 warnings generated.

Number of similar (compiler,implementation) pairs: 10, namely:
CompilerImplementations
clang -O3 -fomit-frame-pointer -Qunused-arguments mj32
clang -O3 -fwrapv -march=native -fomit-frame-pointer -Qunused-arguments mj32
clang -O3 -fwrapv -march=x86-64 -mcpu=core-avx2 -mavx2 -maes -mpclmul -fomit-frame-pointer -Qunused-arguments mj32
clang -O3 -fwrapv -mavx2 -fomit-frame-pointer -Qunused-arguments mj32
clang -O3 -fwrapv -mavx -fomit-frame-pointer -Qunused-arguments mj32
clang -O3 -fwrapv -mavx -maes -mpclmul -fomit-frame-pointer -Qunused-arguments mj32
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments mj32
clang -mcpu=cortex-a8 -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments mj32
clang -mcpu=cortex-a9 -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments mj32
clang -mcpu=native -mfpu=neon -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments mj32

Compiler output

Implementation: crypto_scalarmult/nistp256/mj32
Compiler: gcc
gep256.c: gep256.c: In function 'isneutral':
gep256.c: gep256.c:83:28: warning: 'sizeof' on array function parameter 'p' will return size of 'crypto_uint32 (*)[8] {aka unsigned int (*)[8]}' [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:78:29: note: declared here
gep256.c: static int isneutral(gep256 p) {
gep256.c: ^
gep256.c: gep256.c: In function 'isneutral_precomp':
gep256.c: gep256.c:92:28: warning: 'sizeof' on array function parameter 'p' will return size of 'crypto_uint32 (*)[8] {aka unsigned int (*)[8]}' [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:87:45: note: declared here
gep256.c: static int isneutral_precomp(gep256_precomp p) {
gep256.c: ^

Number of similar (compiler,implementation) pairs: 106, namely:
CompilerImplementations
gcc mj32
gcc -O2 -fomit-frame-pointer mj32
gcc -O3 -fomit-frame-pointer mj32
gcc -O -fomit-frame-pointer mj32
gcc -Os -fomit-frame-pointer mj32
gcc -fno-schedule-insns -O2 -fomit-frame-pointer mj32
gcc -fno-schedule-insns -O3 -fomit-frame-pointer mj32
gcc -fno-schedule-insns -O -fomit-frame-pointer mj32
gcc -fno-schedule-insns -Os -fomit-frame-pointer mj32
gcc -funroll-loops mj32
gcc -funroll-loops -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -O -fomit-frame-pointer mj32
gcc -funroll-loops -Os -fomit-frame-pointer mj32
gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer mj32
gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -O -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -Os -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer mj32
gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer mj32
gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer mj32
gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer mj32
gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -march=k8 -O -fomit-frame-pointer mj32
gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer mj32
gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer mj32
gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer mj32
gcc -funroll-loops -march=nocona -O -fomit-frame-pointer mj32
gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer mj32
gcc -m64 -O2 -fomit-frame-pointer mj32
gcc -m64 -O3 -fomit-frame-pointer mj32
gcc -m64 -O -fomit-frame-pointer mj32
gcc -m64 -Os -fomit-frame-pointer mj32
gcc -m64 -march=core-avx-i -O2 -fomit-frame-pointer mj32
gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer mj32
gcc -m64 -march=core-avx-i -O -fomit-frame-pointer mj32
gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer mj32
gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer mj32
gcc -m64 -march=core-avx2 -O3 -fomit-frame-pointer mj32
gcc -m64 -march=core-avx2 -O -fomit-frame-pointer mj32
gcc -m64 -march=core-avx2 -Os -fomit-frame-pointer mj32
gcc -m64 -march=core2 -O2 -fomit-frame-pointer mj32
gcc -m64 -march=core2 -O3 -fomit-frame-pointer mj32
gcc -m64 -march=core2 -O -fomit-frame-pointer mj32
gcc -m64 -march=core2 -Os -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer mj32
gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer mj32
gcc -m64 -march=corei7-avx -O2 -fomit-frame-pointer mj32
gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer mj32
gcc -m64 -march=corei7-avx -O -fomit-frame-pointer mj32
gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer mj32
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer mj32
gcc -m64 -march=corei7 -O3 -fomit-frame-pointer mj32
gcc -m64 -march=corei7 -O -fomit-frame-pointer mj32
gcc -m64 -march=corei7 -Os -fomit-frame-pointer mj32
gcc -m64 -march=k8 -O2 -fomit-frame-pointer mj32
gcc -m64 -march=k8 -O3 -fomit-frame-pointer mj32
gcc -m64 -march=k8 -O -fomit-frame-pointer mj32
gcc -m64 -march=k8 -Os -fomit-frame-pointer mj32
gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer mj32
gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer mj32
gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer mj32
gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer mj32
gcc -m64 -march=nocona -O2 -fomit-frame-pointer mj32
gcc -m64 -march=nocona -O3 -fomit-frame-pointer mj32
gcc -m64 -march=nocona -O -fomit-frame-pointer mj32
gcc -m64 -march=nocona -Os -fomit-frame-pointer mj32
gcc -march=barcelona -O2 -fomit-frame-pointer mj32
gcc -march=barcelona -O3 -fomit-frame-pointer mj32
gcc -march=barcelona -O -fomit-frame-pointer mj32
gcc -march=barcelona -Os -fomit-frame-pointer mj32
gcc -march=k8 -O2 -fomit-frame-pointer mj32
gcc -march=k8 -O3 -fomit-frame-pointer mj32
gcc -march=k8 -O -fomit-frame-pointer mj32
gcc -march=k8 -Os -fomit-frame-pointer mj32
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv mj32
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv mj32
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv mj32
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv mj32
gcc -march=nocona -O2 -fomit-frame-pointer mj32
gcc -march=nocona -O3 -fomit-frame-pointer mj32
gcc -march=nocona -O -fomit-frame-pointer mj32
gcc -march=nocona -Os -fomit-frame-pointer mj32

Compiler output

Implementation: crypto_scalarmult/nistp256/mj32
Compiler: gcc -m64 -march=barcelona -O2 -fomit-frame-pointer
gep256.c: gep256.c: In function 'isneutral':
gep256.c: gep256.c:83:28: warning: 'sizeof' on array function parameter 'p' will return size of 'crypto_uint32 (*)[8] {aka unsigned int (*)[8]}' [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:78:29: note: declared here
gep256.c: static int isneutral(gep256 p) {
gep256.c: ^
gep256.c: gep256.c: In function 'isneutral_precomp':
gep256.c: gep256.c:92:28: warning: 'sizeof' on array function parameter 'p' will return size of 'crypto_uint32 (*)[8] {aka unsigned int (*)[8]}' [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:87:45: note: declared here
gep256.c: static int isneutral_precomp(gep256_precomp p) {
gep256.c: ^
gep256.c: gep256.c: In function 'isneutral':
gep256.c: gep256.c:83:28: warning: 'sizeof' on array function parameter 'p' will return size of 'crypto_uint32 (*)[8] {aka unsigned int (*)[8]}' [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:78:29: note: declared here
gep256.c: static int isneutral(gep256 p) {
gep256.c: ^
gep256.c: gep256.c: In function 'isneutral_precomp':
gep256.c: gep256.c:92:28: warning: 'sizeof' on array function parameter 'p' will return size of 'crypto_uint32 (*)[8] {aka unsigned int (*)[8]}' [-Wsizeof-array-argument]
gep256.c: for (i = 0; i < sizeof p; ++i) x |= ((unsigned char *)p)[i];
gep256.c: ^
gep256.c: gep256.c:87:45: note: declared here
gep256.c: static int isneutral_precomp(gep256_precomp p) {
gep256.c: ^

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
gcc -m64 -march=barcelona -O2 -fomit-frame-pointer mj32
gcc -m64 -march=barcelona -O3 -fomit-frame-pointer mj32
gcc -m64 -march=barcelona -O -fomit-frame-pointer mj32
gcc -m64 -march=barcelona -Os -fomit-frame-pointer mj32