diff options
Diffstat (limited to 'c/blake3_avx2.c')
-rw-r--r-- | c/blake3_avx2.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/c/blake3_avx2.c b/c/blake3_avx2.c new file mode 100644 index 0000000..0300505 --- /dev/null +++ b/c/blake3_avx2.c @@ -0,0 +1,316 @@ +#include "blake3_impl.h" + +#include <immintrin.h> + +#define DEGREE 8 + +INLINE __m256i loadu(const uint8_t src[32]) { + return _mm256_loadu_si256((const __m256i *)src); +} + +INLINE void storeu(__m256i src, uint8_t dest[16]) { + _mm256_storeu_si256((__m256i *)dest, src); +} + +INLINE __m256i addv(__m256i a, __m256i b) { return _mm256_add_epi32(a, b); } + +// Note that clang-format doesn't like the name "xor" for some reason. +INLINE __m256i xorv(__m256i a, __m256i b) { return _mm256_xor_si256(a, b); } + +INLINE __m256i set1(uint32_t x) { return _mm256_set1_epi32((int32_t)x); } + +INLINE __m256i set8(uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, + uint32_t f, uint32_t g, uint32_t h) { + return _mm256_setr_epi32((int32_t)a, (int32_t)b, (int32_t)c, (int32_t)d, + (int32_t)e, (int32_t)f, (int32_t)g, (int32_t)h); +} + +INLINE __m256i rot16(__m256i x) { + return _mm256_shuffle_epi8( + x, _mm256_set_epi8(13, 12, 15, 14, 9, 8, 11, 10, 5, 4, 7, 6, 1, 0, 3, 2, + 13, 12, 15, 14, 9, 8, 11, 10, 5, 4, 7, 6, 1, 0, 3, 2)); +} + +INLINE __m256i rot12(__m256i x) { + return xorv(_mm256_srli_epi32(x, 12), _mm256_slli_epi32(x, 32 - 12)); +} + +INLINE __m256i rot8(__m256i x) { + return _mm256_shuffle_epi8( + x, _mm256_set_epi8(12, 15, 14, 13, 8, 11, 10, 9, 4, 7, 6, 5, 0, 3, 2, 1, + 12, 15, 14, 13, 8, 11, 10, 9, 4, 7, 6, 5, 0, 3, 2, 1)); +} + +INLINE __m256i rot7(__m256i x) { + return xorv(_mm256_srli_epi32(x, 7), _mm256_slli_epi32(x, 32 - 7)); +} + +INLINE void round_fn(__m256i v[16], __m256i m[16], size_t r) { + v[0] = addv(v[0], m[(size_t)MSG_SCHEDULE[r][0]]); + v[1] = addv(v[1], m[(size_t)MSG_SCHEDULE[r][2]]); + v[2] = addv(v[2], m[(size_t)MSG_SCHEDULE[r][4]]); + v[3] = addv(v[3], m[(size_t)MSG_SCHEDULE[r][6]]); + v[0] = addv(v[0], v[4]); + v[1] = addv(v[1], v[5]); + v[2] = addv(v[2], v[6]); + v[3] = addv(v[3], v[7]); + v[12] = xorv(v[12], v[0]); + v[13] = xorv(v[13], v[1]); + v[14] = xorv(v[14], v[2]); + v[15] = xorv(v[15], v[3]); + v[12] = rot16(v[12]); + v[13] = rot16(v[13]); + v[14] = rot16(v[14]); + v[15] = rot16(v[15]); + v[8] = addv(v[8], v[12]); + v[9] = addv(v[9], v[13]); + v[10] = addv(v[10], v[14]); + v[11] = addv(v[11], v[15]); + v[4] = xorv(v[4], v[8]); + v[5] = xorv(v[5], v[9]); + v[6] = xorv(v[6], v[10]); + v[7] = xorv(v[7], v[11]); + v[4] = rot12(v[4]); + v[5] = rot12(v[5]); + v[6] = rot12(v[6]); + v[7] = rot12(v[7]); + v[0] = addv(v[0], m[(size_t)MSG_SCHEDULE[r][1]]); + v[1] = addv(v[1], m[(size_t)MSG_SCHEDULE[r][3]]); + v[2] = addv(v[2], m[(size_t)MSG_SCHEDULE[r][5]]); + v[3] = addv(v[3], m[(size_t)MSG_SCHEDULE[r][7]]); + v[0] = addv(v[0], v[4]); + v[1] = addv(v[1], v[5]); + v[2] = addv(v[2], v[6]); + v[3] = addv(v[3], v[7]); + v[12] = xorv(v[12], v[0]); + v[13] = xorv(v[13], v[1]); + v[14] = xorv(v[14], v[2]); + v[15] = xorv(v[15], v[3]); + v[12] = rot8(v[12]); + v[13] = rot8(v[13]); + v[14] = rot8(v[14]); + v[15] = rot8(v[15]); + v[8] = addv(v[8], v[12]); + v[9] = addv(v[9], v[13]); + v[10] = addv(v[10], v[14]); + v[11] = addv(v[11], v[15]); + v[4] = xorv(v[4], v[8]); + v[5] = xorv(v[5], v[9]); + v[6] = xorv(v[6], v[10]); + v[7] = xorv(v[7], v[11]); + v[4] = rot7(v[4]); + v[5] = rot7(v[5]); + v[6] = rot7(v[6]); + v[7] = rot7(v[7]); + + v[0] = addv(v[0], m[(size_t)MSG_SCHEDULE[r][8]]); + v[1] = addv(v[1], m[(size_t)MSG_SCHEDULE[r][10]]); + v[2] = addv(v[2], m[(size_t)MSG_SCHEDULE[r][12]]); + v[3] = addv(v[3], m[(size_t)MSG_SCHEDULE[r][14]]); + v[0] = addv(v[0], v[5]); + v[1] = addv(v[1], v[6]); + v[2] = addv(v[2], v[7]); + v[3] = addv(v[3], v[4]); + v[15] = xorv(v[15], v[0]); + v[12] = xorv(v[12], v[1]); + v[13] = xorv(v[13], v[2]); + v[14] = xorv(v[14], v[3]); + v[15] = rot16(v[15]); + v[12] = rot16(v[12]); + v[13] = rot16(v[13]); + v[14] = rot16(v[14]); + v[10] = addv(v[10], v[15]); + v[11] = addv(v[11], v[12]); + v[8] = addv(v[8], v[13]); + v[9] = addv(v[9], v[14]); + v[5] = xorv(v[5], v[10]); + v[6] = xorv(v[6], v[11]); + v[7] = xorv(v[7], v[8]); + v[4] = xorv(v[4], v[9]); + v[5] = rot12(v[5]); + v[6] = rot12(v[6]); + v[7] = rot12(v[7]); + v[4] = rot12(v[4]); + v[0] = addv(v[0], m[(size_t)MSG_SCHEDULE[r][9]]); + v[1] = addv(v[1], m[(size_t)MSG_SCHEDULE[r][11]]); + v[2] = addv(v[2], m[(size_t)MSG_SCHEDULE[r][13]]); + v[3] = addv(v[3], m[(size_t)MSG_SCHEDULE[r][15]]); + v[0] = addv(v[0], v[5]); + v[1] = addv(v[1], v[6]); + v[2] = addv(v[2], v[7]); + v[3] = addv(v[3], v[4]); + v[15] = xorv(v[15], v[0]); + v[12] = xorv(v[12], v[1]); + v[13] = xorv(v[13], v[2]); + v[14] = xorv(v[14], v[3]); + v[15] = rot8(v[15]); + v[12] = rot8(v[12]); + v[13] = rot8(v[13]); + v[14] = rot8(v[14]); + v[10] = addv(v[10], v[15]); + v[11] = addv(v[11], v[12]); + v[8] = addv(v[8], v[13]); + v[9] = addv(v[9], v[14]); + v[5] = xorv(v[5], v[10]); + v[6] = xorv(v[6], v[11]); + v[7] = xorv(v[7], v[8]); + v[4] = xorv(v[4], v[9]); + v[5] = rot7(v[5]); + v[6] = rot7(v[6]); + v[7] = rot7(v[7]); + v[4] = rot7(v[4]); +} + +INLINE void transpose_vecs(__m256i vecs[DEGREE]) { + // Interleave 32-bit lanes. The low unpack is lanes 00/11/44/55, and the high + // is 22/33/66/77. + __m256i ab_0145 = _mm256_unpacklo_epi32(vecs[0], vecs[1]); + __m256i ab_2367 = _mm256_unpackhi_epi32(vecs[0], vecs[1]); + __m256i cd_0145 = _mm256_unpacklo_epi32(vecs[2], vecs[3]); + __m256i cd_2367 = _mm256_unpackhi_epi32(vecs[2], vecs[3]); + __m256i ef_0145 = _mm256_unpacklo_epi32(vecs[4], vecs[5]); + __m256i ef_2367 = _mm256_unpackhi_epi32(vecs[4], vecs[5]); + __m256i gh_0145 = _mm256_unpacklo_epi32(vecs[6], vecs[7]); + __m256i gh_2367 = _mm256_unpackhi_epi32(vecs[6], vecs[7]); + + // Interleave 64-bit lates. The low unpack is lanes 00/22 and the high is + // 11/33. + __m256i abcd_04 = _mm256_unpacklo_epi64(ab_0145, cd_0145); + __m256i abcd_15 = _mm256_unpackhi_epi64(ab_0145, cd_0145); + __m256i abcd_26 = _mm256_unpacklo_epi64(ab_2367, cd_2367); + __m256i abcd_37 = _mm256_unpackhi_epi64(ab_2367, cd_2367); + __m256i efgh_04 = _mm256_unpacklo_epi64(ef_0145, gh_0145); + __m256i efgh_15 = _mm256_unpackhi_epi64(ef_0145, gh_0145); + __m256i efgh_26 = _mm256_unpacklo_epi64(ef_2367, gh_2367); + __m256i efgh_37 = _mm256_unpackhi_epi64(ef_2367, gh_2367); + + // Interleave 128-bit lanes. + vecs[0] = _mm256_permute2x128_si256(abcd_04, efgh_04, 0x20); + vecs[1] = _mm256_permute2x128_si256(abcd_15, efgh_15, 0x20); + vecs[2] = _mm256_permute2x128_si256(abcd_26, efgh_26, 0x20); + vecs[3] = _mm256_permute2x128_si256(abcd_37, efgh_37, 0x20); + vecs[4] = _mm256_permute2x128_si256(abcd_04, efgh_04, 0x31); + vecs[5] = _mm256_permute2x128_si256(abcd_15, efgh_15, 0x31); + vecs[6] = _mm256_permute2x128_si256(abcd_26, efgh_26, 0x31); + vecs[7] = _mm256_permute2x128_si256(abcd_37, efgh_37, 0x31); +} + +INLINE void transpose_msg_vecs(const uint8_t *const *inputs, + size_t block_offset, __m256i out[16]) { + out[0] = loadu(&inputs[0][block_offset + 0 * sizeof(__m256i)]); + out[1] = loadu(&inputs[1][block_offset + 0 * sizeof(__m256i)]); + out[2] = loadu(&inputs[2][block_offset + 0 * sizeof(__m256i)]); + out[3] = loadu(&inputs[3][block_offset + 0 * sizeof(__m256i)]); + out[4] = loadu(&inputs[4][block_offset + 0 * sizeof(__m256i)]); + out[5] = loadu(&inputs[5][block_offset + 0 * sizeof(__m256i)]); + out[6] = loadu(&inputs[6][block_offset + 0 * sizeof(__m256i)]); + out[7] = loadu(&inputs[7][block_offset + 0 * sizeof(__m256i)]); + out[8] = loadu(&inputs[0][block_offset + 1 * sizeof(__m256i)]); + out[9] = loadu(&inputs[1][block_offset + 1 * sizeof(__m256i)]); + out[10] = loadu(&inputs[2][block_offset + 1 * sizeof(__m256i)]); + out[11] = loadu(&inputs[3][block_offset + 1 * sizeof(__m256i)]); + out[12] = loadu(&inputs[4][block_offset + 1 * sizeof(__m256i)]); + out[13] = loadu(&inputs[5][block_offset + 1 * sizeof(__m256i)]); + out[14] = loadu(&inputs[6][block_offset + 1 * sizeof(__m256i)]); + out[15] = loadu(&inputs[7][block_offset + 1 * sizeof(__m256i)]); + transpose_vecs(&out[0]); + transpose_vecs(&out[8]); +} + +INLINE void load_counters(uint64_t counter, bool increment_counter, + __m256i *out_low, __m256i *out_high) { + uint64_t mask = (increment_counter ? ~0 : 0); + *out_low = set8( + counter_low(counter + (mask & 0)), counter_low(counter + (mask & 1)), + counter_low(counter + (mask & 2)), counter_low(counter + (mask & 3)), + counter_low(counter + (mask & 4)), counter_low(counter + (mask & 5)), + counter_low(counter + (mask & 6)), counter_low(counter + (mask & 7))); + *out_high = set8( + counter_high(counter + (mask & 0)), counter_high(counter + (mask & 1)), + counter_high(counter + (mask & 2)), counter_high(counter + (mask & 3)), + counter_high(counter + (mask & 4)), counter_high(counter + (mask & 5)), + counter_high(counter + (mask & 6)), counter_high(counter + (mask & 7))); +} + +void blake3_hash8_avx2(const uint8_t *const *inputs, size_t blocks, + const uint32_t key[8], uint64_t counter, + bool increment_counter, uint8_t flags, + uint8_t flags_start, uint8_t flags_end, uint8_t *out) { + __m256i h_vecs[8] = { + set1(key[0]), set1(key[1]), set1(key[2]), set1(key[3]), + set1(key[4]), set1(key[5]), set1(key[6]), set1(key[7]), + }; + __m256i counter_low_vec, counter_high_vec; + load_counters(counter, increment_counter, &counter_low_vec, + &counter_high_vec); + uint8_t block_flags = flags | flags_start; + + for (size_t block = 0; block < blocks; block++) { + if (block + 1 == blocks) { + block_flags |= flags_end; + } + __m256i block_len_vec = set1(BLAKE3_BLOCK_LEN); + __m256i block_flags_vec = set1(block_flags); + __m256i msg_vecs[16]; + transpose_msg_vecs(inputs, block * BLAKE3_BLOCK_LEN, msg_vecs); + + __m256i v[16] = { + h_vecs[0], h_vecs[1], h_vecs[2], h_vecs[3], + h_vecs[4], h_vecs[5], h_vecs[6], h_vecs[7], + set1(IV[0]), set1(IV[1]), set1(IV[2]), set1(IV[3]), + counter_low_vec, counter_high_vec, block_len_vec, block_flags_vec, + }; + round_fn(v, msg_vecs, 0); + round_fn(v, msg_vecs, 1); + round_fn(v, msg_vecs, 2); + round_fn(v, msg_vecs, 3); + round_fn(v, msg_vecs, 4); + round_fn(v, msg_vecs, 5); + round_fn(v, msg_vecs, 6); + h_vecs[0] = xorv(v[0], v[8]); + h_vecs[1] = xorv(v[1], v[9]); + h_vecs[2] = xorv(v[2], v[10]); + h_vecs[3] = xorv(v[3], v[11]); + h_vecs[4] = xorv(v[4], v[12]); + h_vecs[5] = xorv(v[5], v[13]); + h_vecs[6] = xorv(v[6], v[14]); + h_vecs[7] = xorv(v[7], v[15]); + + block_flags = flags; + } + + transpose_vecs(h_vecs); + storeu(h_vecs[0], &out[0 * sizeof(__m256i)]); + storeu(h_vecs[1], &out[1 * sizeof(__m256i)]); + storeu(h_vecs[2], &out[2 * sizeof(__m256i)]); + storeu(h_vecs[3], &out[3 * sizeof(__m256i)]); + storeu(h_vecs[4], &out[4 * sizeof(__m256i)]); + storeu(h_vecs[5], &out[5 * sizeof(__m256i)]); + storeu(h_vecs[6], &out[6 * sizeof(__m256i)]); + storeu(h_vecs[7], &out[7 * sizeof(__m256i)]); +} + +void blake3_hash_many_sse41(const uint8_t *const *inputs, size_t num_inputs, + size_t blocks, const uint32_t key[8], + uint64_t counter, bool increment_counter, + uint8_t flags, uint8_t flags_start, + uint8_t flags_end, uint8_t *out); + +void blake3_hash_many_avx2(const uint8_t *const *inputs, size_t num_inputs, + size_t blocks, const uint32_t key[8], + uint64_t counter, bool increment_counter, + uint8_t flags, uint8_t flags_start, + uint8_t flags_end, uint8_t *out) { + while (num_inputs >= DEGREE) { + blake3_hash8_avx2(inputs, blocks, key, counter, increment_counter, flags, + flags_start, flags_end, out); + if (increment_counter) { + counter += DEGREE; + } + inputs += DEGREE; + num_inputs -= DEGREE; + out = &out[DEGREE * BLAKE3_OUT_LEN]; + } + blake3_hash_many_sse41(inputs, num_inputs, blocks, key, counter, + increment_counter, flags, flags_start, flags_end, out); +} |