287 lines
8.5 KiB
C
287 lines
8.5 KiB
C
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#include "crypto_encode_653x1541.h"
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#include <immintrin.h>
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/* auto-generated; do not edit */
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#define int16 int16_t
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#define uint16 uint16_t
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#define uint32 uint32_t
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void PQCLEAN_SNTRUP653_AVX2_crypto_encode_653x1541(unsigned char *out, const void *v) {
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const int16 *R0 = v;
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/* XXX: caller could overlap R with input */
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uint16 R[327];
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long i;
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const uint16 *reading;
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uint16 *writing;
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uint16 r0, r1;
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uint32 r2;
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uint32 s0;
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reading = (uint16 *) R0;
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writing = R;
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i = 41;
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while (i > 0) {
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__m256i x, y;
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--i;
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if (!i) {
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reading -= 4;
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writing -= 2;
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out -= 2;
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}
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x = _mm256_loadu_si256((__m256i *) reading);
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x = _mm256_add_epi16(x, _mm256_set1_epi16(2310));
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x &= _mm256_set1_epi16(16383);
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x = _mm256_mulhi_epi16(x, _mm256_set1_epi16(21846));
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y = x & _mm256_set1_epi32(65535);
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x = _mm256_srli_epi32(x, 16);
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x = _mm256_mullo_epi32(x, _mm256_set1_epi32(1541));
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x = _mm256_add_epi32(y, x);
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x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
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12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1,
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12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1
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));
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x = _mm256_permute4x64_epi64(x, 0xd8);
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_mm_storeu_si128((__m128i *) writing, _mm256_extractf128_si256(x, 0));
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s0 = _mm256_extract_epi32(x, 4);
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 = _mm256_extract_epi32(x, 6);
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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reading += 16;
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writing += 8;
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}
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R[326] = (((R0[652] + 2310) & 16383) * 10923) >> 15;
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reading = (uint16 *) R;
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writing = R;
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i = 11;
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while (i > 0) {
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__m256i x, x2, y, y2;
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--i;
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if (!i) {
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reading -= 26;
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writing -= 13;
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out -= 26;
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}
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x = _mm256_loadu_si256((__m256i *) (reading + 0));
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x2 = _mm256_loadu_si256((__m256i *) (reading + 16));
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y = x & _mm256_set1_epi32(65535);
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y2 = x2 & _mm256_set1_epi32(65535);
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x = _mm256_srli_epi32(x, 16);
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x2 = _mm256_srli_epi32(x2, 16);
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x = _mm256_mullo_epi32(x, _mm256_set1_epi32(9277));
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x2 = _mm256_mullo_epi32(x2, _mm256_set1_epi32(9277));
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x = _mm256_add_epi32(y, x);
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x2 = _mm256_add_epi32(y2, x2);
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x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
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));
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x2 = _mm256_shuffle_epi8(x2, _mm256_set_epi8(
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
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));
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x = _mm256_permute4x64_epi64(x, 0xd8);
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x2 = _mm256_permute4x64_epi64(x2, 0xd8);
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_mm256_storeu_si256((__m256i *) writing, _mm256_permute2f128_si256(x, x2, 0x31));
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_mm256_storeu_si256((__m256i *) out, _mm256_permute2f128_si256(x, x2, 0x20));
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reading += 32;
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writing += 16;
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out += 32;
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}
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R[163] = R[326];
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reading = (uint16 *) R;
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writing = R;
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i = 11;
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while (i > 0) {
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__m256i x, y;
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--i;
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if (!i) {
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reading -= 12;
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writing -= 6;
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out -= 6;
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}
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x = _mm256_loadu_si256((__m256i *) reading);
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y = x & _mm256_set1_epi32(65535);
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x = _mm256_srli_epi32(x, 16);
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x = _mm256_mullo_epi32(x, _mm256_set1_epi32(1314));
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x = _mm256_add_epi32(y, x);
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x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
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12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1,
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12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1
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));
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x = _mm256_permute4x64_epi64(x, 0xd8);
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_mm_storeu_si128((__m128i *) writing, _mm256_extractf128_si256(x, 0));
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s0 = _mm256_extract_epi32(x, 4);
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 = _mm256_extract_epi32(x, 6);
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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reading += 16;
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writing += 8;
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}
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reading = (uint16 *) R;
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writing = R;
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i = 3;
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while (i > 0) {
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__m256i x, x2, y, y2;
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--i;
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if (!i) {
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reading -= 14;
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writing -= 7;
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out -= 14;
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}
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x = _mm256_loadu_si256((__m256i *) (reading + 0));
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x2 = _mm256_loadu_si256((__m256i *) (reading + 16));
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y = x & _mm256_set1_epi32(65535);
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y2 = x2 & _mm256_set1_epi32(65535);
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x = _mm256_srli_epi32(x, 16);
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x2 = _mm256_srli_epi32(x2, 16);
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x = _mm256_mullo_epi32(x, _mm256_set1_epi32(6745));
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x2 = _mm256_mullo_epi32(x2, _mm256_set1_epi32(6745));
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x = _mm256_add_epi32(y, x);
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x2 = _mm256_add_epi32(y2, x2);
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x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
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));
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x2 = _mm256_shuffle_epi8(x2, _mm256_set_epi8(
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0,
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15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
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));
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x = _mm256_permute4x64_epi64(x, 0xd8);
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x2 = _mm256_permute4x64_epi64(x2, 0xd8);
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_mm256_storeu_si256((__m256i *) writing, _mm256_permute2f128_si256(x, x2, 0x31));
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_mm256_storeu_si256((__m256i *) out, _mm256_permute2f128_si256(x, x2, 0x20));
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reading += 32;
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writing += 16;
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out += 32;
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}
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reading = (uint16 *) R;
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writing = R;
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i = 3;
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while (i > 0) {
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__m256i x, y;
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--i;
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if (!i) {
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reading -= 8;
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writing -= 4;
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out -= 4;
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}
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x = _mm256_loadu_si256((__m256i *) reading);
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y = x & _mm256_set1_epi32(65535);
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x = _mm256_srli_epi32(x, 16);
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x = _mm256_mullo_epi32(x, _mm256_set1_epi32(695));
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x = _mm256_add_epi32(y, x);
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x = _mm256_shuffle_epi8(x, _mm256_set_epi8(
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12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1,
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12, 8, 4, 0, 12, 8, 4, 0, 14, 13, 10, 9, 6, 5, 2, 1
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));
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x = _mm256_permute4x64_epi64(x, 0xd8);
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_mm_storeu_si128((__m128i *) writing, _mm256_extractf128_si256(x, 0));
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s0 = _mm256_extract_epi32(x, 4);
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 = _mm256_extract_epi32(x, 6);
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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s0 >>= 8;
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*out++ = s0;
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reading += 16;
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writing += 8;
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}
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R[20] = R[40];
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for (i = 0; i < 10; ++i) {
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r0 = R[2 * i];
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r1 = R[2 * i + 1];
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r2 = r0 + r1 * (uint32)1887;
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*out++ = r2;
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r2 >>= 8;
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R[i] = r2;
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}
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R[10] = R[20];
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for (i = 0; i < 5; ++i) {
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r0 = R[2 * i];
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r1 = R[2 * i + 1];
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r2 = r0 + r1 * (uint32)13910;
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*out++ = r2;
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r2 >>= 8;
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*out++ = r2;
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r2 >>= 8;
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R[i] = r2;
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}
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R[5] = R[10];
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for (i = 0; i < 2; ++i) {
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r0 = R[2 * i];
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r1 = R[2 * i + 1];
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r2 = r0 + r1 * (uint32)2953;
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*out++ = r2;
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r2 >>= 8;
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*out++ = r2;
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r2 >>= 8;
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R[i] = r2;
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}
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r0 = R[4];
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r1 = R[5];
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r2 = r0 + r1 * (uint32)2953;
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*out++ = r2;
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r2 >>= 8;
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R[2] = r2;
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r0 = R[0];
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r1 = R[1];
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r2 = r0 + r1 * (uint32)134;
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*out++ = r2;
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r2 >>= 8;
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R[0] = r2;
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R[1] = R[2];
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r0 = R[0];
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r1 = R[1];
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r2 = r0 + r1 * (uint32)71;
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*out++ = r2;
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r2 >>= 8;
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R[0] = r2;
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r0 = R[0];
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*out++ = r0;
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r0 >>= 8;
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*out++ = r0; /*clang-analyzer-deadcode.DeadStores*/ /*r0 >>= 8;*/
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}
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