Implementation notes: armeabi, bblack, crypto_scalarmult/curve25519

Computer: bblack
Microarchitecture: armeabi; Cortex-A8 (413fc082)
Architecture: armeabi
CPU ID: unknown CPU ID
SUPERCOP version: 20240107
Operation: crypto_scalarmult
Primitive: curve25519

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
1841504	8396 0 0	27423 420 1496	`neon2`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
1878088	8396 0 0	26447 420 1504	`neon2`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
1928624	8396 0 0	35263 420 1512	`neon2`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
1936044	8388 0 0	21970 452 1496	`neon2`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
1940332	8396 0 0	27423 420 1496	`neon2`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
1945124	8384 0 0	21282 444 1496	`neon2`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
1967000	8396 0 0	25805 416 1496	`neon2`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
1971872	8384 0 0	22254 452 1496	`neon2`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
1979456	8384 0 0	23294 452 1496	`neon2`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
7263740	8676 0 0	35431 420 1512	`ref10`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
7460228	7740 0 0	26655 420 1496	`ref10`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
7460608	7740 0 0	26655 420 1496	`ref10`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
7463860	7344 0 0	24621 416 1496	`ref10`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
7468524	8860 0 0	26799 420 1504	`ref10`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
9180812	5218 0 0	18078 444 1496	`ref10`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
9501296	6664 0 0	21526 452 1496	`ref10`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
9501796	6624 0 0	20466 452 1496	`ref10`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
19631532	9438 0 0	23010 452 1496	`ref10`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
82115604	24408 0 0	51231 420 1512	`ref`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
95471324	3116 0 0	17982 452 1496	`ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
96250496	2148 0 0	15986 452 1496	`ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
100190428	1768 0 0	14622 444 1496	`ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
101455884	3196 0 0	20549 416 1496	`ref`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
102714892	18204 0 0	36215 420 1504	`ref`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
106165692	2000 0 0	15570 452 1496	`ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231226	20231212
108083036	20328 0 0	39335 420 1496	`ref`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212
108086956	20328 0 0	39335 420 1496	`ref`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20231226	20231212

Compiler output

Implementation: donna_c64
Security model: constbranchindex
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

try.c: /usr/bin/ld: libcrypto_scalarmult_curve25519.a(smult.o): in function `crypto_scalarmult_curve25519_donna_c64_constbranchindex':
try.c: smult.c:(.text+0x...): undefined reference to `__multi3'
try.c: /usr/bin/ld: smult.c:(.text+0x...): undefined reference to `__multi3'
try.c: /usr/bin/ld: smult.c:(.text+0x...): undefined reference to `__multi3'
try.c: /usr/bin/ld: smult.c:(.text+0x...): undefined reference to `__multi3'
try.c: /usr/bin/ld: smult.c:(.text+0x...): undefined reference to `__multi3'
try.c: /usr/bin/ld: libcrypto_scalarmult_curve25519.a(smult.o):smult.c:(.text+0x...): more undefined references to `__multi3' follow
try.c: clang: error: linker command failed with exit code 1 (use -v to see invocation)

Number of similar (compiler,implementation) pairs: 5, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	donna_c64
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	donna_c64
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	donna_c64
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	donna_c64
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	donna_c64

Compiler output

Implementation: donna_c64
Security model: constbranchindex
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

smult.c: smult.c:34:1: error: unable to emulate 'TI'
smult.c: typedef unsigned uint128_t __attribute__((mode(TI)));
smult.c: ^~~~~~~
smult.c: smult.c: In function 'fscalar_product':
smult.c: smult.c:76:49: warning: right shift count >= width of type [-Wshift-count-overflow]
smult.c: a = ((uint128_t) in[1]) * scalar + ((limb) (a >> 51));
smult.c: ^~
smult.c: smult.c:79:49: warning: right shift count >= width of type [-Wshift-count-overflow]
smult.c: a = ((uint128_t) in[2]) * scalar + ((limb) (a >> 51));
smult.c: ^~
smult.c: smult.c:82:49: warning: right shift count >= width of type [-Wshift-count-overflow]
smult.c: a = ((uint128_t) in[3]) * scalar + ((limb) (a >> 51));
smult.c: ^~
smult.c: smult.c:85:49: warning: right shift count >= width of type [-Wshift-count-overflow]
smult.c: a = ((uint128_t) in[4]) * scalar + ((limb) (a >> 51));
smult.c: ^~
smult.c: smult.c:88:19: warning: right shift count >= width of type [-Wshift-count-overflow]
smult.c: output[0] += (a >> 51) * 19;
smult.c: ^~
smult.c: smult.c: In function 'fmul':
smult.c: smult.c:132:70: warning: right shift count >= width of type [-Wshift-count-overflow]
smult.c: r0 = (limb)t[0] & 0x7ffffffffffff; c = (limb)(t[0] >> 51);
smult.c: ^~
smult.c: smult.c:133:70: warning: right shift count >= width of type [-Wshift-count-overflow]
smult.c: t[1] += c; r1 = (limb)t[1] & 0x7ffffffffffff; c = (limb)(t[1] >> 51);
smult.c: ...

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

Compiler	Implementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	donna_c64
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	donna_c64
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	donna_c64
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	donna_c64

Compiler output

Implementation: rust_crypto
Security model: constbranchindex
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

try.c: env: 'cargo': No such file or directory

Number of similar (compiler,implementation) pairs: 9, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	rust_crypto
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	rust_crypto
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	rust_crypto
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	rust_crypto
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	rust_crypto
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	rust_crypto
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	rust_crypto
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	rust_crypto
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	rust_crypto