Implementation notes: armeabi, tinker, crypto_scalarmult/nistp256

Computer: tinker
Microarchitecture: armeabi; Cortex-A17 (410fc0d1)
Architecture: armeabi
CPU ID: unknown CPU ID
SUPERCOP version: 20240107
Operation: crypto_scalarmult
Primitive: nistp256

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
7266790	9040 30720 0	25393 31116 1544	`T:mj32`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240129	20240107
7698060	17540 30720 0	35590 31144 1544	`T:mj32`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20240129	20240107
9615604	8216 30720 0	23833 31116 1544	`T:mj32`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240129	20240107
11375876	6834 30720 0	20053 31108 1536	`T:mj32`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240129	20240107
17676214	10186 30720 0	25521 31116 1536	`T:mj32`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240129	20240107

Compiler output

Implementation: T:mj32
Security model: timingleaks
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

gep256.c: gep256.c:83:28: warning: sizeof on array function parameter will return size of 'fe *' (aka 'unsigned int (*)[8]') instead of 'gep256' (aka 'unsigned int[3][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:92:28: warning: sizeof on array function parameter will return size of 'fe *' (aka 'unsigned int (*)[8]') instead of 'gep256_precomp' (aka 'unsigned int[2][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: 2 warnings generated.
try.c: /usr/bin/arm-linux-gnueabihf-ld: warning: crypto_stream_chacha20_moon_neon_32_constbranchindex-chacha.o: missing .note.GNU-stack section implies executable stack
try.c: /usr/bin/arm-linux-gnueabihf-ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
try.c: /usr/bin/arm-linux-gnueabihf-ld: warning: crypto_stream_chacha20_moon_neon_32_constbranchindex-chacha.o: missing .note.GNU-stack section implies executable stack
try.c: /usr/bin/arm-linux-gnueabihf-ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
measure.c: /usr/bin/arm-linux-gnueabihf-ld: warning: crypto_stream_chacha20_moon_neon_32_constbranchindex-chacha.o: missing .note.GNU-stack section implies executable stack
measure.c: /usr/bin/arm-linux-gnueabihf-ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker

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

Compiler	Implementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	T:mj32

Compiler output

Implementation: T:mj32
Security model: timingleaks
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: | ~~~~~~~~~~~~~~~^
try.c: /usr/bin/ld: warning: crypto_stream_chacha20_moon_neon_32_constbranchindex-chacha.o: missing .note.GNU-stack section implies executable stack
try.c: /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
try.c: /usr/bin/ld: warning: crypto_stream_chacha20_moon_neon_32_constbranchindex-chacha.o: missing .note.GNU-stack section implies executable stack
try.c: /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
measure.c: /usr/bin/ld: warning: crypto_stream_chacha20_moon_neon_32_constbranchindex-chacha.o: missing .note.GNU-stack section implies executable stack
measure.c: /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker

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

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