Implementation notes: amd64, mace, crypto_scalarmult/nistp256

Computer: mace
Architecture: amd64
CPU ID: AuthenticAMD-00040fb2-178bfbff
SUPERCOP version: 20170105
Operation: crypto_scalarmult
Primitive: nistp256

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
4469460	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer`	20161116	20161009
4483889	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer`	20161116	20161009
4617175	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer`	20161116	20161009
4617243	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer`	20161116	20161009
4630904	? ? ?	? ? ?	`mj32`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20161116	20161009
4637914	? ? ?	? ? ?	`mj32`	`clang_-O3_-fwrapv_-march=native_-fomit-frame-pointer_-Qunused-arguments`	20161116	20161009
4684222	? ? ?	? ? ?	`mj32`	`clang_-mcpu=cortex-a9_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20161116	20161009
4688609	? ? ?	? ? ?	`mj32`	`clang_-mcpu=cortex-a8_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20161116	20161009
4689757	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-O3_-fomit-frame-pointer`	20161116	20161009
4698260	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-O3_-fomit-frame-pointer`	20161116	20161009
4700857	? ? ?	? ? ?	`mj32`	`clang_-O3_-fomit-frame-pointer_-Qunused-arguments`	20161116	20161009
4704227	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer`	20161116	20161009
4704607	? ? ?	? ? ?	`mj32`	`clang_-mcpu=native_-mfpu=neon_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments`	20161116	20161009
4716863	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer`	20161116	20161009
4875309	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-O3_-fomit-frame-pointer`	20161116	20161009
4882323	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-O3_-fomit-frame-pointer`	20161116	20161009
4890426	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv`	20161116	20161009
4890991	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer`	20161116	20161009
4897197	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer`	20161116	20161009
4897212	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-O3_-fomit-frame-pointer`	20161116	20161009
4930806	? ? ?	? ? ?	`mj32`	`gcc_-O3_-fomit-frame-pointer`	20161116	20161009
4934184	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-O3_-fomit-frame-pointer`	20161116	20161009
4939112	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer`	20161116	20161009
4951551	? ? ?	? ? ?	`mj32`	`gcc_-m64_-O3_-fomit-frame-pointer`	20161116	20161009
4952417	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer`	20161116	20161009
4972842	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer`	20161116	20161009
4980503	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-O3_-fomit-frame-pointer`	20161116	20161009
4980870	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer`	20161116	20161009
5012217	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer`	20161116	20161009
5018907	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer`	20161116	20161009
5027036	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-O2_-fomit-frame-pointer`	20161116	20161009
5030429	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer`	20161116	20161009
5032246	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer`	20161116	20161009
5035449	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer`	20161116	20161009
5048315	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer`	20161116	20161009
5921454	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer`	20161116	20161009
5931638	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer`	20161116	20161009
6034790	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer`	20161116	20161009
6034931	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer`	20161116	20161009
6633640	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer`	20161116	20161009
6650463	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-O_-fomit-frame-pointer`	20161116	20161009
6659322	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-O_-fomit-frame-pointer`	20161116	20161009
6907655	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-O2_-fomit-frame-pointer`	20161116	20161009
6930318	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer`	20161116	20161009
6939863	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer`	20161116	20161009
6940551	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-O2_-fomit-frame-pointer`	20161116	20161009
6953451	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv`	20161116	20161009
6958698	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-O2_-fomit-frame-pointer`	20161116	20161009
7001538	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-O2_-fomit-frame-pointer`	20161116	20161009
7002344	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-O2_-fomit-frame-pointer`	20161116	20161009
7118488	? ? ?	? ? ?	`mj32`	`gcc_-O2_-fomit-frame-pointer`	20161116	20161009
7120847	? ? ?	? ? ?	`mj32`	`gcc_-m64_-O2_-fomit-frame-pointer`	20161116	20161009
7120923	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-O2_-fomit-frame-pointer`	20161116	20161009
7182770	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer`	20161116	20161009
7183563	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer`	20161116	20161009
7331179	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer`	20161116	20161009
7385524	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-O2_-fomit-frame-pointer`	20161116	20161009
7392081	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer`	20161116	20161009
7410178	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=corei7_-O2_-fomit-frame-pointer`	20161116	20161009
7992738	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer`	20161116	20161009
7994970	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-Os_-fomit-frame-pointer`	20161116	20161009
8003199	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer`	20161116	20161009
8015352	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer`	20161116	20161009
8029664	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer`	20161116	20161009
8035333	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer`	20161116	20161009
8035515	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer`	20161116	20161009
8185057	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer`	20161116	20161009
8189475	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer`	20161116	20161009
9375194	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-Os_-fomit-frame-pointer`	20161116	20161009
9383468	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-Os_-fomit-frame-pointer`	20161116	20161009
9401591	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-Os_-fomit-frame-pointer`	20161116	20161009
9407248	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer`	20161116	20161009
9425719	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv`	20161116	20161009
9443743	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-Os_-fomit-frame-pointer`	20161116	20161009
9444154	? ? ?	? ? ?	`mj32`	`gcc_-Os_-fomit-frame-pointer`	20161116	20161009
9445106	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer`	20161116	20161009
9454589	? ? ?	? ? ?	`mj32`	`gcc_-m64_-Os_-fomit-frame-pointer`	20161116	20161009
9457078	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-Os_-fomit-frame-pointer`	20161116	20161009
9464884	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-Os_-fomit-frame-pointer`	20161116	20161009
9472214	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer`	20161116	20161009
9475228	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=corei7_-Os_-fomit-frame-pointer`	20161116	20161009
9477765	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-Os_-fomit-frame-pointer`	20161116	20161009
9490925	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer`	20161116	20161009
13311430	? ? ?	? ? ?	`mj32`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv`	20161116	20161009
13486878	? ? ?	? ? ?	`mj32`	`gcc_-march=barcelona_-O_-fomit-frame-pointer`	20161116	20161009
13487647	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer`	20161116	20161009
13491490	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=barcelona_-O_-fomit-frame-pointer`	20161116	20161009
13501051	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=k8_-O_-fomit-frame-pointer`	20161116	20161009
13501585	? ? ?	? ? ?	`mj32`	`gcc_-march=k8_-O_-fomit-frame-pointer`	20161116	20161009
13921542	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-O_-fomit-frame-pointer`	20161116	20161009
13921877	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer`	20161116	20161009
13932337	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=corei7_-O_-fomit-frame-pointer`	20161116	20161009
14038198	? ? ?	? ? ?	`mj32`	`gcc_-O_-fomit-frame-pointer`	20161116	20161009
14041862	? ? ?	? ? ?	`mj32`	`gcc_-march=nocona_-O_-fomit-frame-pointer`	20161116	20161009
14042605	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=nocona_-O_-fomit-frame-pointer`	20161116	20161009
14043364	? ? ?	? ? ?	`mj32`	`gcc_-m64_-O_-fomit-frame-pointer`	20161116	20161009
14047230	? ? ?	? ? ?	`mj32`	`gcc_-fno-schedule-insns_-O_-fomit-frame-pointer`	20161116	20161009
14202184	? ? ?	? ? ?	`mj32`	`gcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer`	20161116	20161009
68044369	? ? ?	? ? ?	`mj32`	`gcc`	20161116	20161009
68072131	? ? ?	? ? ?	`mj32`	`gcc_-funroll-loops`	20161116	20161009
68087816	? ? ?	? ? ?	`mj32`	`cc`	20161116	20161009

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