Implementation notes: armeabi, bblack, crypto_scalarmult/nistp256

Computer: bblack
Microarchitecture: armeabi; Cortex-A8 (413fc082)
Architecture: armeabi
CPU ID: unknown CPU ID
SUPERCOP version: 20240425
Operation: crypto_scalarmult
Primitive: nistp256

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
10329920	18152 30720 0	43355 31168 1512	`T:mj32`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20240511	20240425
10484624	18440 30720 0	34675 31168 1504	`T:mj32`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20240511	20240425
10490080	13608 30720 0	30811 31168 1496	`T:mj32`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20240511	20240425
10490328	13608 30720 0	30811 31168 1496	`T:mj32`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20240511	20240425
12741644	12752 30720 0	25878 31200 1496	`T:mj32`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240511	20240425
18873504	8708 30720 0	20806 31200 1496	`T:mj32`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240511	20240425
19075116	11316 30720 0	26861 31164 1496	`T:mj32`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20240511	20240425
20629844	7830 30720 0	19062 31192 1496	`T:mj32`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240511	20240425
32088128	10092 30720 0	22390 31200 1496	`T:mj32`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240511	20240425

Compiler output

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 (implementation,compiler) pairs: 5, namely:

Implementation	Compiler
`T:mj32`	`clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE (4.2.1_Compatible_Clang_7.0.1_(tags/RELEASE_701/final))`
`T:mj32`	`clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE (4.2.1_Compatible_Clang_7.0.1_(tags/RELEASE_701/final))`
`T:mj32`	`clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE (4.2.1_Compatible_Clang_7.0.1_(tags/RELEASE_701/final))`
`T:mj32`	`clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE (4.2.1_Compatible_Clang_7.0.1_(tags/RELEASE_701/final))`
`T:mj32`	`clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE (4.2.1_Compatible_Clang_7.0.1_(tags/RELEASE_701/final))`

Compiler output

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 (implementation,compiler) pairs: 4, namely:

Implementation	Compiler
`T:mj32`	`gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE (8.3.0)`
`T:mj32`	`gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE (8.3.0)`
`T:mj32`	`gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE (8.3.0)`
`T:mj32`	`gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE (8.3.0)`