Implementation notes: amd64, h4atom, crypto_scalarmult/curve25519

Computer: h4atom
Architecture: amd64
CPU ID: GenuineIntel-000106ca-bfe9fbff
SUPERCOP version: 20160806
Operation: crypto_scalarmult
Primitive: curve25519

Time	Implementation	Compiler	Benchmark date	SUPERCOP version
4457472	`amd64-64`	`clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments`	20160814	20160806
4458264	`amd64-64`	`gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv`	20160814	20160806
4458960	`amd64-64`	`gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv`	20160814	20160806
4458968	`amd64-64`	`gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv`	20160814	20160806
4459288	`amd64-64`	`gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv`	20160814	20160806
4957824	`donna_c64`	`gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv`	20160814	20160806
5123416	`donna_c64`	`gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv`	20160814	20160806
5467328	`donna_c64`	`gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv`	20160814	20160806
5618072	`donna_c64`	`gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv`	20160814	20160806
6008816	`amd64-51`	`clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments`	20160814	20160806
6009264	`amd64-51`	`gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv`	20160814	20160806
6009376	`amd64-51`	`gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv`	20160814	20160806
6009624	`amd64-51`	`gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv`	20160814	20160806
6009632	`amd64-51`	`gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv`	20160814	20160806
6134160	`donna_c64`	`clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments`	20160814	20160806
7815328	`donna`	`gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv`	20160814	20160806
7817296	`donna`	`gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv`	20160814	20160806
7837872	`donna`	`gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv`	20160814	20160806
7929832	`donna`	`gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv`	20160814	20160806
12302696	`ref10`	`gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv`	20160814	20160806
12324392	`ref10`	`gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv`	20160814	20160806
12573416	`ref10`	`gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv`	20160814	20160806
13165232	`ref10`	`gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv`	20160814	20160806
13863008	`ref10`	`clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments`	20160814	20160806
111935904	`ref`	`gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv`	20160814	20160806
113095992	`ref`	`gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv`	20160814	20160806
116048400	`ref`	`clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments`	20160814	20160806
123495208	`ref`	`gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv`	20160814	20160806
150056880	`ref`	`gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv`	20160814	20160806

Test failure

Implementation: crypto_scalarmult/curve25519/donna
Compiler: clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments

error 111

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

Compiler	Implementations
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments	donna sandy2x
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv	sandy2x
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv	sandy2x
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv	sandy2x
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv	sandy2x

Compiler output

Implementation: crypto_scalarmult/curve25519/donna_c64
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv

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: 4, namely:

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