Implementation notes: amd64, wooden, crypto_scalarmult/nistp256

Computer: wooden
Microarchitecture: amd64; Goldmont (506c9)
Architecture: amd64
CPU ID: GenuineIntel-000506c9-1fc9cbf5
SUPERCOP version: 20240107
Operation: crypto_scalarmult
Primitive: nistp256

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
3802412	16919 30720 0	39081 31520 1568	`T:mj32`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231222	20231215
3816088	12967 30720 0	32857 31520 1568	`T:mj32`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231222	20231215
3837680	16842 30720 0	37625 31520 1568	`T:mj32`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231222	20231215
4296620	14291 30720 0	35485 31488 1632	`T:mj32`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231222	20231215
5203064	10354 30720 0	28391 31512 1568	`T:mj32`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231222	20231215
6634330	11599 30720 0	30103 31512 1568	`T:mj32`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231222	20231215
6688816	11723 30720 0	31781 31488 1632	`T:mj32`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231222	20231215
8064226	9942 30720 0	27581 31480 1600	`T:mj32`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231222	20231215
12650312	11390 30720 0	30293 31488 1632	`T:mj32`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231222	20231215

Compiler output

Implementation: T:mj32
Security model: timingleaks
Compiler: clang -march=native -O2 -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 '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: 5, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	T:mj32
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	T:mj32
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	T:mj32
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	T:mj32
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: | ~~~~~~~~~~~~~~~^

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