Implementation notes: aarch64, par3, crypto_scalarmult/curve25519

Computer: par3
Architecture: aarch64
CPU ID: unknown CPU ID
SUPERCOP version: 20170718
Operation: crypto_scalarmult
Primitive: curve25519

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
1908947	? ? ?	? ? ?	`donna_c64`	`gcc_-funroll-loops_-march=native_-mtune=native_-O3`	20170720	20170718
1920327	? ? ?	? ? ?	`donna_c64`	`gcc_-funroll-loops_-march=native_-mtune=native_-O2`	20170720	20170718
2073356	? ? ?	? ? ?	`ref10`	`gcc_-funroll-loops_-march=native_-mtune=native_-O3`	20170720	20170718
2092130	? ? ?	? ? ?	`donna_c64`	`gcc_-march=native_-mtune=native_-O2`	20170720	20170718
2098786	? ? ?	? ? ?	`ref10`	`gcc_-march=native_-mtune=native_-O3`	20170720	20170718
2115722	? ? ?	? ? ?	`ref10`	`gcc_-funroll-loops_-march=native_-mtune=native_-O2`	20170720	20170718
2160768	? ? ?	? ? ?	`donna_c64`	`gcc_-funroll-loops_-march=native_-mtune=native_-Os`	20170720	20170718
2163490	? ? ?	? ? ?	`donna_c64`	`gcc_-march=native_-mtune=native_-O3`	20170720	20170718
2221921	? ? ?	? ? ?	`ref10`	`gcc_-march=native_-mtune=native_-O2`	20170720	20170718
2264382	? ? ?	? ? ?	`donna_c64`	`gcc_-march=native_-mtune=native_-Os`	20170720	20170718
2295638	? ? ?	? ? ?	`ref10`	`gcc_-funroll-loops_-march=native_-mtune=native_-Os`	20170720	20170718
2509465	? ? ?	? ? ?	`ref10`	`gcc_-march=native_-mtune=native_-Os`	20170720	20170718
52350135	? ? ?	? ? ?	`ref`	`gcc_-funroll-loops_-march=native_-mtune=native_-O3`	20170720	20170718
55241263	? ? ?	? ? ?	`ref`	`gcc_-funroll-loops_-march=native_-mtune=native_-O2`	20170720	20170718
58960774	? ? ?	? ? ?	`ref`	`gcc_-march=native_-mtune=native_-O3`	20170720	20170718
68780740	? ? ?	? ? ?	`ref`	`gcc_-march=native_-mtune=native_-O2`	20170720	20170718
75095482	? ? ?	? ? ?	`ref`	`gcc_-funroll-loops_-march=native_-mtune=native_-Os`	20170720	20170718
77969703	? ? ?	? ? ?	`ref`	`gcc_-march=native_-mtune=native_-Os`	20170720	20170718

Compiler output

Implementation: crypto_scalarmult/curve25519/donna_c64
Compiler: gcc -funroll-loops -march=native -mtune=native -O2

smult.c: smult.c:149:1: warning: always_inline function might not be inlinable [-Wattributes]
smult.c: fsquare_times(felem output, const felem in, limb count) {
smult.c: ^~~~~~~~~~~~~
smult.c: smult.c:100:1: warning: always_inline function might not be inlinable [-Wattributes]
smult.c: fmul(felem output, const felem in2, const felem in) {
smult.c: ^~~~
smult.c: smult.c:70:1: warning: always_inline function might not be inlinable [-Wattributes]
smult.c: fscalar_product(felem output, const felem in, const limb scalar) {
smult.c: ^~~~~~~~~~~~~~~
smult.c: smult.c:56:1: warning: always_inline function might not be inlinable [-Wattributes]
smult.c: fdifference_backwards(felem out, const felem in) {
smult.c: ^~~~~~~~~~~~~~~~~~~~~
smult.c: smult.c:41:1: warning: always_inline function might not be inlinable [-Wattributes]
smult.c: fsum(limb *output, const limb *in) {
smult.c: ^~~~

Number of similar (compiler,implementation) pairs: 6, namely:

Compiler	Implementations
gcc -funroll-loops -march=native -mtune=native -O2	donna_c64
gcc -funroll-loops -march=native -mtune=native -O3	donna_c64
gcc -funroll-loops -march=native -mtune=native -Os	donna_c64
gcc -march=native -mtune=native -O2	donna_c64
gcc -march=native -mtune=native -O3	donna_c64
gcc -march=native -mtune=native -Os	donna_c64