Implementation notes: aarch64, pmnod145, crypto_scalarmult/nistp256

Computer: pmnod145
Architecture: aarch64
CPU ID: 431f0af1
SUPERCOP version: 20191017
Operation: crypto_scalarmult
Primitive: nistp256

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
3855875	16744 30720 0	50600 31592 1584	`mj32`	`armclang_-march=armv8a+crypto_-mcpu=thunderx2t99_-mtune=thunderx2t99_-O3_-fPIC_-fPIE`	20191018	20191017
3856325	11912 30720 0	45056 31592 1584	`mj32`	`armclang_-march=armv8a+crypto_-mcpu=thunderx2t99_-mtune=thunderx2t99_-O2_-fPIC_-fPIE`	20191018	20191017
4237475	11076 30720 0	42579 31576 1600	`mj32`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191018	20191017
6253775	9992 30720 0	40435 31568 1584	`mj32`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191018	20191017
7573725	9220 30720 0	37415 31552 1568	`mj32`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191018	20191017
11344550	10832 30720 0	39939 31568 1584	`mj32`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191018	20191017

Compiler output

Implementation: mj32
Security model: unknown
Compiler: armclang -march=armv8a+crypto -mcpu=thunderx2t99 -mtune=thunderx2t99 -O2 -fPIC -fPIE

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: 2, namely:

Compiler	Implementations
armclang -march=armv8a+crypto -mcpu=thunderx2t99 -mtune=thunderx2t99 -O2 -fPIC -fPIE	mj32
armclang -march=armv8a+crypto -mcpu=thunderx2t99 -mtune=thunderx2t99 -O3 -fPIC -fPIE	mj32

Compiler output

Implementation: mj32
Security model: unknown
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

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: 83 | 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: 78 | 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: 92 | 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: 87 | static int isneutral_precomp(gep256_precomp p) {
gep256.c: | ~~~~~~~~~~~~~~~^

Number of similar (compiler,implementation) pairs: 4, namely:

Compiler	Implementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	mj32
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	mj32
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	mj32
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	mj32