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pqcrypto/crypto_kem/sntrup761/avx2/crypto_encode_761x1531round.c
John M. Schanck 09d3f1e1e6 NTRU Prime: More changes for MS compiler
2021-03-24 21:02:47 +00:00

304 lines
10 KiB
C
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#include "crypto_encode_761x1531round.h"
#include <immintrin.h>
/* auto-generated; do not edit */
#define int16 int16_t
#define uint16 uint16_t
#define uint32 uint32_t
void PQCLEAN_SNTRUP761_AVX2_crypto_encode_761x1531round(unsigned char *out, const void *v) {
const int16 *R0 = v;
/* XXX: caller could overlap R with input */
uint16 R[381];
long i;
const uint16 *reading;
uint16 *writing;
uint16 r0, r1;
uint32 r2;
uint32 s0;
reading = (uint16 *) R0;
writing = R;
i = 48;
while (i > 0) {
__m256i x, y;
--i;
if (!i) {
reading -= 8;
writing -= 4;
out -= 4;
}
x = _mm256_loadu_si256((__m256i *) reading);
x = _mm256_mulhrs_epi16(x, _mm256_set1_epi16(10923));
x = _mm256_add_epi16(x, _mm256_add_epi16(x, x));
x = _mm256_add_epi16(x, _mm256_set1_epi16(2295));
x &= _mm256_set1_epi16(16383);
x = _mm256_mulhi_epi16(x, _mm256_set1_epi16(21846));
y = x & _mm256_set1_epi32(65535);
x = _mm256_srli_epi32(x, 16);
x = _mm256_mullo_epi32(x, _mm256_set1_epi32(1531));
x = _mm256_add_epi32(y, x);
x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1,
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1
));
x = _mm256_permute4x64_epi64(x, 0xd8);
_mm_storeu_si128((__m128i *) writing, _mm256_extractf128_si256(x, 0));
s0 = (uint32) _mm256_extract_epi32(x, 4);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 = (uint32) _mm256_extract_epi32(x, 6);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
reading += 16;
writing += 8;
}
R[380] = (uint16) ((((3 * ((10923 * R0[760] + 16384) >> 15) + 2295) & 16383) * 10923) >> 15);
reading = (uint16 *) R;
writing = R;
i = 12;
while (i > 0) {
__m256i x, x2, y, y2;
--i;
if (!i) {
reading -= 4;
writing -= 2;
out -= 4;
}
x = _mm256_loadu_si256((__m256i *) (reading + 0));
x2 = _mm256_loadu_si256((__m256i *) (reading + 16));
y = x & _mm256_set1_epi32(65535);
y2 = x2 & _mm256_set1_epi32(65535);
x = _mm256_srli_epi32(x, 16);
x2 = _mm256_srli_epi32(x2, 16);
x = _mm256_mullo_epi32(x, _mm256_set1_epi32(9157));
x2 = _mm256_mullo_epi32(x2, _mm256_set1_epi32(9157));
x = _mm256_add_epi32(y, x);
x2 = _mm256_add_epi32(y2, x2);
x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
));
x2 = _mm256_shuffle_epi8(x2, _mm256_set_epi8(
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
));
x = _mm256_permute4x64_epi64(x, 0xd8);
x2 = _mm256_permute4x64_epi64(x2, 0xd8);
_mm256_storeu_si256((__m256i *) writing, _mm256_permute2f128_si256(x, x2, 0x31));
_mm256_storeu_si256((__m256i *) out, _mm256_permute2f128_si256(x, x2, 0x20));
reading += 32;
writing += 16;
out += 32;
}
R[190] = R[380];
reading = (uint16 *) R;
writing = R;
i = 12;
while (i > 0) {
__m256i x, y;
--i;
if (!i) {
reading -= 2;
writing -= 1;
out -= 1;
}
x = _mm256_loadu_si256((__m256i *) reading);
y = x & _mm256_set1_epi32(65535);
x = _mm256_srli_epi32(x, 16);
x = _mm256_mullo_epi32(x, _mm256_set1_epi32(1280));
x = _mm256_add_epi32(y, x);
x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1,
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1
));
x = _mm256_permute4x64_epi64(x, 0xd8);
_mm_storeu_si128((__m128i *) writing, _mm256_extractf128_si256(x, 0));
s0 = (uint32) _mm256_extract_epi32(x, 4);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 = (uint32) _mm256_extract_epi32(x, 6);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
reading += 16;
writing += 8;
}
R[95] = R[190];
reading = (uint16 *) R;
writing = R;
i = 3;
while (i > 0) {
__m256i x, x2, y, y2;
--i;
x = _mm256_loadu_si256((__m256i *) (reading + 0));
x2 = _mm256_loadu_si256((__m256i *) (reading + 16));
y = x & _mm256_set1_epi32(65535);
y2 = x2 & _mm256_set1_epi32(65535);
x = _mm256_srli_epi32(x, 16);
x2 = _mm256_srli_epi32(x2, 16);
x = _mm256_mullo_epi32(x, _mm256_set1_epi32(6400));
x2 = _mm256_mullo_epi32(x2, _mm256_set1_epi32(6400));
x = _mm256_add_epi32(y, x);
x2 = _mm256_add_epi32(y2, x2);
x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
));
x2 = _mm256_shuffle_epi8(x2, _mm256_set_epi8(
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
));
x = _mm256_permute4x64_epi64(x, 0xd8);
x2 = _mm256_permute4x64_epi64(x2, 0xd8);
_mm256_storeu_si256((__m256i *) writing, _mm256_permute2f128_si256(x, x2, 0x31));
_mm256_storeu_si256((__m256i *) out, _mm256_permute2f128_si256(x, x2, 0x20));
reading += 32;
writing += 16;
out += 32;
}
reading = (uint16 *) R;
writing = R;
i = 3;
while (i > 0) {
__m256i x, y;
--i;
x = _mm256_loadu_si256((__m256i *) reading);
y = x & _mm256_set1_epi32(65535);
x = _mm256_srli_epi32(x, 16);
x = _mm256_mullo_epi32(x, _mm256_set1_epi32(625));
x = _mm256_add_epi32(y, x);
x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1,
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1
));
x = _mm256_permute4x64_epi64(x, 0xd8);
_mm_storeu_si128((__m128i *) writing, _mm256_extractf128_si256(x, 0));
s0 = (uint32) _mm256_extract_epi32(x, 4);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 = (uint32) _mm256_extract_epi32(x, 6);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
reading += 16;
writing += 8;
}
reading = (uint16 *) R;
writing = R;
i = 2;
while (i > 0) {
__m256i x, y;
--i;
if (!i) {
reading -= 8;
writing -= 4;
out -= 4;
}
x = _mm256_loadu_si256((__m256i *) reading);
y = x & _mm256_set1_epi32(65535);
x = _mm256_srli_epi32(x, 16);
x = _mm256_mullo_epi32(x, _mm256_set1_epi32(1526));
x = _mm256_add_epi32(y, x);
x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1,
12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1
));
x = _mm256_permute4x64_epi64(x, 0xd8);
_mm_storeu_si128((__m128i *) writing, _mm256_extractf128_si256(x, 0));
s0 = (uint32) _mm256_extract_epi32(x, 4);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 = (uint32) _mm256_extract_epi32(x, 6);
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
s0 >>= 8;
*out++ = (unsigned char) s0;
reading += 16;
writing += 8;
}
for (i = 0; i < 6; ++i) {
r0 = R[2 * i];
r1 = R[2 * i + 1];
r2 = r0 + r1 * (uint32)9097;
*out++ = (unsigned char) r2;
r2 >>= 8;
*out++ = (unsigned char) r2;
r2 >>= 8;
R[i] = (uint16) r2;
}
for (i = 0; i < 3; ++i) {
r0 = R[2 * i];
r1 = R[2 * i + 1];
r2 = r0 + r1 * (uint32)1263;
*out++ = (unsigned char) r2;
r2 >>= 8;
R[i] = (uint16) r2;
}
r0 = R[0];
r1 = R[1];
r2 = r0 + r1 * (uint32)6232;
*out++ = (unsigned char) r2;
r2 >>= 8;
*out++ = (unsigned char) r2;
r2 >>= 8;
R[0] = (uint16) r2;
R[1] = R[2];
r0 = R[0];
r1 = R[1];
r2 = r0 + r1 * (uint32)593;
*out++ = (unsigned char) r2;
r2 >>= 8;
R[0] = (uint16) r2;
r0 = R[0];
*out++ = (unsigned char) r0;
r0 >>= 8;
*out++ = (unsigned char) r0;
}
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