Implementation notes: amd64, scw1b63b1, crypto_kem/newhope512cca

Computer: scw1b63b1
Architecture: amd64
CPU ID: GenuineIntel-000506f1-0f8bfbff
SUPERCOP version: 20191017
Operation: crypto_kem
Primitive: newhope512cca

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
635372	15981 0 0	32609 792 1576	`ref`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191223	20191017
635380	15981 0 0	32609 792 1576	`ref`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191223	20191017
635678	15997 0 0	33449 792 1576	`ref`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191223	20191017
656188	17510 0 0	35105 792 1576	`ref`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191223	20191017
728146	43935 0 0	63124 816 1608	`ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191223	20191017
866312	12460 0 0	28299 784 1576	`ref`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191223	20191017
916700	13190 0 0	30396 816 1608	`ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191223	20191017
962706	13030 0 0	29964 816 1608	`ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191223	20191017
972118	12101 0 0	27948 808 1576	`ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191223	20191017

Compiler output

Implementation: avx2
Security model: unknown
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

fips202x4.c: fips202x4.c:155:12: error: always_inline function '_mm256_xor_si256' requires target feature 'xsave', but would be inlined into function 'shake128x4' that is compiled without support for 'xsave'
fips202x4.c: s[i] = _mm256_xor_si256(s[i], s[i]);
fips202x4.c: ^
fips202x4.c: 1 error generated.

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

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2

Compiler output

Implementation: avx2
Security model: unknown
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

fips202x4.c: fips202x4.c:155:12: error: always_inline function '_mm256_xor_si256' requires target feature 'sse4.2', but would be inlined into function 'shake128x4' that is compiled without support for 'sse4.2'
fips202x4.c: s[i] = _mm256_xor_si256(s[i], s[i]);
fips202x4.c: ^
fips202x4.c: 1 error generated.

Number of similar (compiler,implementation) pairs: 1, namely:

Compiler	Implementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2

Compiler output

Implementation: avx2
Security model: unknown
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

fips202x4.c: fips202x4.c: In function ‘shake128x4’:
fips202x4.c: fips202x4.c:155:10: warning: AVX vector return without AVX enabled changes the ABI [-Wpsabi]
fips202x4.c: s[i] = _mm256_xor_si256(s[i], s[i]);
fips202x4.c: ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fips202x4.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/6/include/immintrin.h:43:0,
fips202x4.c: from fips202x4.c:1:
fips202x4.c: /usr/lib/gcc/x86_64-linux-gnu/6/include/avx2intrin.h:913:1: error: inlining failed in call to always_inline ‘_mm256_xor_si256’: target specific option mismatch
fips202x4.c: _mm256_xor_si256 (__m256i __A, __m256i __B)
fips202x4.c: ^~~~~~~~~~~~~~~~
fips202x4.c: fips202x4.c:155:12: note: called from here
fips202x4.c: s[i] = _mm256_xor_si256(s[i], s[i]);
fips202x4.c: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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

Compiler	Implementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2

Namespace violations

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

cpapke.o cpapke_dec T
cpapke.o cpapke_enc T
cpapke.o cpapke_keypair T
fips202.o KeccakF1600_StatePermute T
fips202.o shake128_absorb T
fips202.o shake128_squeezeblocks T
fips202.o shake256 T
ntt.o bitrev_vector T
ntt.o mul_coefficients T
ntt.o ntt T
poly.o poly_add T
poly.o poly_compress T
poly.o poly_decompress T
poly.o poly_frombytes T
poly.o poly_frommsg T
poly.o poly_invntt T
poly.o poly_mul_pointwise T
poly.o poly_ntt T
poly.o poly_sample T
poly.o poly_sub T
poly.o poly_tobytes T
poly.o poly_tomsg T
poly.o poly_uniform T
precomp.o omegas_bitrev_montgomery R
precomp.o omegas_inv_bitrev_montgomery R
precomp.o psis_bitrev_montgomery R
precomp.o psis_inv_montgomery R
reduce.o montgomery_reduce T
verify.o cmov T
verify.o verify T

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

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