Implementation notes: amd64, morningstar, crypto_scalarmult/nistp256

Computer: morningstar
Architecture: amd64
CPU ID: AuthenticAMD-00100f42-178bfbff
SUPERCOP version: 20170904
Operation: crypto_scalarmult
Primitive: nistp256

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
4013475	? ? ?	? ? ?	`mj32`	`clang_-O3_-fwrapv_-march=native_-fomit-frame-pointer_-Qunused-arguments`	20170907	20170904
4014632	? ? ?	? ? ?	`mj32`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20170907	20170904
4038413	? ? ?	? ? ?	`mj32`	`clang_-O3_-fomit-frame-pointer_-Qunused-arguments`	20170907	20170904
4040802	? ? ?	? ? ?	`mj32`	`clang_-mcpu=cortex-a8_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20170907	20170904
4046835	? ? ?	? ? ?	`mj32`	`clang_-mcpu=cortex-a9_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20170907	20170904
4048438	? ? ?	? ? ?	`mj32`	`clang_-mcpu=native_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20170907	20170904
4110142	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer`	20170907	20170904
4112485	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-O2_-fomit-frame-pointer`	20170907	20170904
4122422	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer`	20170907	20170904
4157568	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer`	20170907	20170904
4157816	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer`	20170907	20170904
4182598	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer`	20170907	20170904
4183424	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer`	20170907	20170904
4192704	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer`	20170907	20170904
4197501	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer`	20170907	20170904
4266257	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer`	20170907	20170904
4266629	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer`	20170907	20170904
4306723	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-O3_-fomit-frame-pointer`	20170907	20170904
4308313	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-O3_-fomit-frame-pointer`	20170907	20170904
4405099	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-O3_-fomit-frame-pointer`	20170907	20170904
4406478	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-O3_-fomit-frame-pointer`	20170907	20170904
4412525	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-O3_-fomit-frame-pointer`	20170907	20170904
4416752	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer`	20170907	20170904
4417559	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer`	20170907	20170904
4423670	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer`	20170907	20170904
4424875	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer`	20170907	20170904
4430536	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv`	20170907	20170904
4440014	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-O3_-fomit-frame-pointer`	20170907	20170904
4446812	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-O3_-fomit-frame-pointer`	20170907	20170904
4447193	? ? ?	? ? ?	`mj32`	`gcc_-m64_-O3_-fomit-frame-pointer`	20170907	20170904
4453990	? ? ?	? ? ?	`mj32`	`gcc_-O3_-fomit-frame-pointer`	20170907	20170904
4465155	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer`	20170907	20170904
4466093	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer`	20170907	20170904
4531251	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer`	20170907	20170904
4531570	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer`	20170907	20170904
5477331	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer`	20170907	20170904
5496891	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer`	20170907	20170904
5498976	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer`	20170907	20170904
5507093	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer`	20170907	20170904
5551272	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer`	20170907	20170904
5592998	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer`	20170907	20170904
5671903	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-O_-fomit-frame-pointer`	20170907	20170904
5678011	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-O_-fomit-frame-pointer`	20170907	20170904
5733861	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer`	20170907	20170904
6986936	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-O2_-fomit-frame-pointer`	20170907	20170904
6990552	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-O2_-fomit-frame-pointer`	20170907	20170904
6998205	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer`	20170907	20170904
7004847	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv`	20170907	20170904
7024306	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-O2_-fomit-frame-pointer`	20170907	20170904
7034068	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer`	20170907	20170904
7147410	? ? ?	? ? ?	`mj32`	`gcc_-m64_-O2_-fomit-frame-pointer`	20170907	20170904
7151767	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-O2_-fomit-frame-pointer`	20170907	20170904
7159589	? ? ?	? ? ?	`mj32`	`gcc_-O2_-fomit-frame-pointer`	20170907	20170904
7186385	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-O2_-fomit-frame-pointer`	20170907	20170904
7218040	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-O2_-fomit-frame-pointer`	20170907	20170904
7391482	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer`	20170907	20170904
7392145	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer`	20170907	20170904
7394168	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-O2_-fomit-frame-pointer`	20170907	20170904
7410072	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=corei7_-O2_-fomit-frame-pointer`	20170907	20170904
7950224	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer`	20170907	20170904
7975763	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer`	20170907	20170904
7991134	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer`	20170907	20170904
7995612	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer`	20170907	20170904
8016846	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-Os_-fomit-frame-pointer`	20170907	20170904
8042666	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer`	20170907	20170904
8065002	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer`	20170907	20170904
8111211	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer`	20170907	20170904
8130626	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer`	20170907	20170904
8828702	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv`	20170907	20170904
8942292	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer`	20170907	20170904
8947059	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-Os_-fomit-frame-pointer`	20170907	20170904
8948914	? ? ?	? ? ?	`mj32`	`gcc_-m64_-Os_-fomit-frame-pointer`	20170907	20170904
8959616	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=corei7_-Os_-fomit-frame-pointer`	20170907	20170904
8963146	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer`	20170907	20170904
8972045	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-Os_-fomit-frame-pointer`	20170907	20170904
8972677	? ? ?	? ? ?	`mj32`	`gcc_-Os_-fomit-frame-pointer`	20170907	20170904
8974649	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-Os_-fomit-frame-pointer`	20170907	20170904
8994155	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer`	20170907	20170904
9234810	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-Os_-fomit-frame-pointer`	20170907	20170904
9244390	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer`	20170907	20170904
9249983	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-Os_-fomit-frame-pointer`	20170907	20170904
9320643	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-Os_-fomit-frame-pointer`	20170907	20170904
9819422	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-Os_-fomit-frame-pointer`	20170907	20170904
12280331	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv`	20170907	20170904
12422499	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer`	20170907	20170904
12464987	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-O_-fomit-frame-pointer`	20170907	20170904
12502152	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-O_-fomit-frame-pointer`	20170907	20170904
12821890	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-O_-fomit-frame-pointer`	20170907	20170904
12902027	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-O_-fomit-frame-pointer`	20170907	20170904
13717219	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-O_-fomit-frame-pointer`	20170907	20170904
13774634	? ? ?	? ? ?	`mj32`	`gcc_-m64_-O_-fomit-frame-pointer`	20170907	20170904
13790222	? ? ?	? ? ?	`mj32`	`gcc_-O_-fomit-frame-pointer`	20170907	20170904
14046731	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-O_-fomit-frame-pointer`	20170907	20170904
14098214	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-O_-fomit-frame-pointer`	20170907	20170904
14771506	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer`	20170907	20170904
14812119	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-O_-fomit-frame-pointer`	20170907	20170904
14846249	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=corei7_-O_-fomit-frame-pointer`	20170907	20170904
14945224	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer`	20170907	20170904
62625390	? ? ?	? ? ?	`mj32`	`cc`	20170907	20170904
62676840	? ? ?	? ? ?	`mj32`	`gcc`	20170907	20170904
62720829	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops`	20170907	20170904

Test failure

Implementation: crypto_scalarmult/nistp256/mj32
Compiler: gcc -m64 -march=core2 -O3 -fomit-frame-pointer

error 111

Number of similar (compiler,implementation) pairs: 1, namely:

Compiler	Implementations
gcc -m64 -march=core2 -O3 -fomit-frame-pointer	mj32

Compiler output

Implementation: crypto_scalarmult/nistp256/mj32
Compiler: cc

Number of similar (compiler,implementation) pairs: 92, namely:

Compiler	Implementations
cc	mj32
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=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 -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 -O -fomit-frame-pointer	mj32
gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer	mj32
gcc -m64 -march=corei7 -O2 -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: 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: 6, namely:

Compiler	Implementations
clang -O3 -fomit-frame-pointer -Qunused-arguments	mj32
clang -O3 -fwrapv -march=native -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 -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:

Compiler	Implementations
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