Implementation notes: amd64, hydra7, crypto_encrypt/lotus256

Computer: hydra7
Microarchitecture: amd64; Sandy Bridge+AES (206a7)
Architecture: amd64
CPU ID: GenuineIntel-000206a7-bfebfbff
SUPERCOP version: 20240107
Operation: crypto_encrypt
Primitive: lotus256

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
1676178	42931 0 8	62890 940 1792	`T:opt`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212
2340574	30290 0 8	50138 940 1792	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212
12765054	13799 0 8	32602 940 1792	`T:opt`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212
12797234	11974 0 8	30418 940 1792	`T:opt`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212
12798185	10392 0 8	29090 940 1792	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212
13099942	9571 0 8	27938 940 1792	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212
17537200	11241 0 8	28602 932 1792	`T:opt`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212
17677783	8886 0 8	26210 932 1792	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20231214	20231212

Compiler output

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

lwe-arithmetics_avx2.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/11/include/immintrin.h:47,
lwe-arithmetics_avx2.c: from lwe-arithmetics_avx2.c:10:
lwe-arithmetics_avx2.c: lwe-arithmetics_avx2.c: In function 'submat_negmul':
lwe-arithmetics_avx2.c: /usr/lib/gcc/x86_64-linux-gnu/11/include/avx2intrin.h:808:1: error: inlining failed in call to 'always_inline' '_mm256_sub_epi16': target specific option mismatch
lwe-arithmetics_avx2.c: 808 | _mm256_sub_epi16 (__m256i __A, __m256i __B)
lwe-arithmetics_avx2.c: | ^~~~~~~~~~~~~~~~
lwe-arithmetics_avx2.c: lwe-arithmetics_avx2.c:192:14: note: called from here
lwe-arithmetics_avx2.c: 192 | c[7] = _mm256_sub_epi16(c[7], b[3]);
lwe-arithmetics_avx2.c: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
lwe-arithmetics_avx2.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/11/include/immintrin.h:47,
lwe-arithmetics_avx2.c: from lwe-arithmetics_avx2.c:10:
lwe-arithmetics_avx2.c: /usr/lib/gcc/x86_64-linux-gnu/11/include/avx2intrin.h:808:1: error: inlining failed in call to 'always_inline' '_mm256_sub_epi16': target specific option mismatch
lwe-arithmetics_avx2.c: 808 | _mm256_sub_epi16 (__m256i __A, __m256i __B)
lwe-arithmetics_avx2.c: | ^~~~~~~~~~~~~~~~
lwe-arithmetics_avx2.c: lwe-arithmetics_avx2.c:191:14: note: called from here
lwe-arithmetics_avx2.c: 191 | c[6] = _mm256_sub_epi16(c[6], b[2]);
lwe-arithmetics_avx2.c: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
lwe-arithmetics_avx2.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/11/include/immintrin.h:47,
lwe-arithmetics_avx2.c: from lwe-arithmetics_avx2.c:10:
lwe-arithmetics_avx2.c: /usr/lib/gcc/x86_64-linux-gnu/11/include/avx2intrin.h:808:1: error: inlining failed in call to 'always_inline' '_mm256_sub_epi16': target specific option mismatch
lwe-arithmetics_avx2.c: 808 | _mm256_sub_epi16 (__m256i __A, __m256i __B)
lwe-arithmetics_avx2.c: | ^~~~~~~~~~~~~~~~
lwe-arithmetics_avx2.c: lwe-arithmetics_avx2.c:190:14: note: called from here
lwe-arithmetics_avx2.c: 190 | c[5] = _mm256_sub_epi16(c[5], b[1]);
lwe-arithmetics_avx2.c: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
lwe-arithmetics_avx2.c: ...

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

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