Implementation notes: amd64, gcc68, crypto_scalarmult/nistp256

Computer: gcc68
Architecture: amd64
CPU ID: AuthenticAMD-00800f82-178bfbff
SUPERCOP version: 20191221
Operation: crypto_scalarmult
Primitive: nistp256
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
223248017289 30720 039387 31520 1576mj32clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2019122220191221
227788817133 30720 039179 31520 1608mj32clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2019122220191221
228380812957 30720 034875 31520 1608mj32clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2019122220191221
228457612957 30720 034875 31520 1608mj32clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2019122220191221
265708812981 30720 035228 31536 1608mj32gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2019122220191221
268108810464 30720 029513 31512 1576mj32clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2019122220191221
348304011043 30720 031924 31536 1608mj32gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2019122220191221
40064649836 30720 028564 31528 1608mj32gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2019122220191221
734240011243 30720 031124 31536 1608mj32gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2019122220191221

Compiler output

Implementation: mj32
Security model: unknown
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:
CompilerImplementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE mj32
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE mj32
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE mj32
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE mj32
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -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: 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:
CompilerImplementations
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