1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560
|
#include "blake3_impl.h"
#include <immintrin.h>
#define DEGREE 4
#define _mm_shuffle_ps2(a, b, c) \
(_mm_castps_si128( \
_mm_shuffle_ps(_mm_castsi128_ps(a), _mm_castsi128_ps(b), (c))))
INLINE __m128i loadu(const uint8_t src[16]) {
return _mm_loadu_si128((const __m128i *)src);
}
INLINE void storeu(__m128i src, uint8_t dest[16]) {
_mm_storeu_si128((__m128i *)dest, src);
}
INLINE __m128i addv(__m128i a, __m128i b) { return _mm_add_epi32(a, b); }
// Note that clang-format doesn't like the name "xor" for some reason.
INLINE __m128i xorv(__m128i a, __m128i b) { return _mm_xor_si128(a, b); }
INLINE __m128i set1(uint32_t x) { return _mm_set1_epi32((int32_t)x); }
INLINE __m128i set4(uint32_t a, uint32_t b, uint32_t c, uint32_t d) {
return _mm_setr_epi32((int32_t)a, (int32_t)b, (int32_t)c, (int32_t)d);
}
INLINE __m128i rot16(__m128i x) {
return _mm_shuffle_epi8(
x, _mm_set_epi8(13, 12, 15, 14, 9, 8, 11, 10, 5, 4, 7, 6, 1, 0, 3, 2));
}
INLINE __m128i rot12(__m128i x) {
return xorv(_mm_srli_epi32(x, 12), _mm_slli_epi32(x, 32 - 12));
}
INLINE __m128i rot8(__m128i x) {
return _mm_shuffle_epi8(
x, _mm_set_epi8(12, 15, 14, 13, 8, 11, 10, 9, 4, 7, 6, 5, 0, 3, 2, 1));
}
INLINE __m128i rot7(__m128i x) {
return xorv(_mm_srli_epi32(x, 7), _mm_slli_epi32(x, 32 - 7));
}
INLINE void g1(__m128i *row0, __m128i *row1, __m128i *row2, __m128i *row3,
__m128i m) {
*row0 = addv(addv(*row0, m), *row1);
*row3 = xorv(*row3, *row0);
*row3 = rot16(*row3);
*row2 = addv(*row2, *row3);
*row1 = xorv(*row1, *row2);
*row1 = rot12(*row1);
}
INLINE void g2(__m128i *row0, __m128i *row1, __m128i *row2, __m128i *row3,
__m128i m) {
*row0 = addv(addv(*row0, m), *row1);
*row3 = xorv(*row3, *row0);
*row3 = rot8(*row3);
*row2 = addv(*row2, *row3);
*row1 = xorv(*row1, *row2);
*row1 = rot7(*row1);
}
// Note the optimization here of leaving row1 as the unrotated row, rather than
// row0. All the message loads below are adjusted to compensate for this. See
// discussion at https://github.com/sneves/blake2-avx2/pull/4
INLINE void diagonalize(__m128i *row0, __m128i *row2, __m128i *row3) {
*row0 = _mm_shuffle_epi32(*row0, _MM_SHUFFLE(2, 1, 0, 3));
*row3 = _mm_shuffle_epi32(*row3, _MM_SHUFFLE(1, 0, 3, 2));
*row2 = _mm_shuffle_epi32(*row2, _MM_SHUFFLE(0, 3, 2, 1));
}
INLINE void undiagonalize(__m128i *row0, __m128i *row2, __m128i *row3) {
*row0 = _mm_shuffle_epi32(*row0, _MM_SHUFFLE(0, 3, 2, 1));
*row3 = _mm_shuffle_epi32(*row3, _MM_SHUFFLE(1, 0, 3, 2));
*row2 = _mm_shuffle_epi32(*row2, _MM_SHUFFLE(2, 1, 0, 3));
}
INLINE void compress_pre(__m128i rows[4], const uint32_t cv[8],
const uint8_t block[BLAKE3_BLOCK_LEN],
uint8_t block_len, uint64_t counter, uint8_t flags) {
rows[0] = loadu((uint8_t *)&cv[0]);
rows[1] = loadu((uint8_t *)&cv[4]);
rows[2] = set4(IV[0], IV[1], IV[2], IV[3]);
rows[3] = set4(counter_low(counter), counter_high(counter),
(uint32_t)block_len, (uint32_t)flags);
__m128i m0 = loadu(&block[sizeof(__m128i) * 0]);
__m128i m1 = loadu(&block[sizeof(__m128i) * 1]);
__m128i m2 = loadu(&block[sizeof(__m128i) * 2]);
__m128i m3 = loadu(&block[sizeof(__m128i) * 3]);
__m128i t0, t1, t2, t3, tt;
// Round 1. The first round permutes the message words from the original
// input order, into the groups that get mixed in parallel.
t0 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(2, 0, 2, 0)); // 6 4 2 0
g1(&rows[0], &rows[1], &rows[2], &rows[3], t0);
t1 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(3, 1, 3, 1)); // 7 5 3 1
g2(&rows[0], &rows[1], &rows[2], &rows[3], t1);
diagonalize(&rows[0], &rows[2], &rows[3]);
t2 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(2, 0, 2, 0)); // 14 12 10 8
t2 = _mm_shuffle_epi32(t2, _MM_SHUFFLE(2, 1, 0, 3)); // 12 10 8 14
g1(&rows[0], &rows[1], &rows[2], &rows[3], t2);
t3 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(3, 1, 3, 1)); // 15 13 11 9
t3 = _mm_shuffle_epi32(t3, _MM_SHUFFLE(2, 1, 0, 3)); // 13 11 9 15
g2(&rows[0], &rows[1], &rows[2], &rows[3], t3);
undiagonalize(&rows[0], &rows[2], &rows[3]);
m0 = t0;
m1 = t1;
m2 = t2;
m3 = t3;
// Round 2. This round and all following rounds apply a fixed permutation
// to the message words from the round before.
t0 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(3, 1, 1, 2));
t0 = _mm_shuffle_epi32(t0, _MM_SHUFFLE(0, 3, 2, 1));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t0);
t1 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(3, 3, 2, 2));
tt = _mm_shuffle_epi32(m0, _MM_SHUFFLE(0, 0, 3, 3));
t1 = _mm_blend_epi16(tt, t1, 0xCC);
g2(&rows[0], &rows[1], &rows[2], &rows[3], t1);
diagonalize(&rows[0], &rows[2], &rows[3]);
t2 = _mm_unpacklo_epi64(m3, m1);
tt = _mm_blend_epi16(t2, m2, 0xC0);
t2 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(1, 3, 2, 0));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t2);
t3 = _mm_unpackhi_epi32(m1, m3);
tt = _mm_unpacklo_epi32(m2, t3);
t3 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(0, 1, 3, 2));
g2(&rows[0], &rows[1], &rows[2], &rows[3], t3);
undiagonalize(&rows[0], &rows[2], &rows[3]);
m0 = t0;
m1 = t1;
m2 = t2;
m3 = t3;
// Round 3
t0 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(3, 1, 1, 2));
t0 = _mm_shuffle_epi32(t0, _MM_SHUFFLE(0, 3, 2, 1));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t0);
t1 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(3, 3, 2, 2));
tt = _mm_shuffle_epi32(m0, _MM_SHUFFLE(0, 0, 3, 3));
t1 = _mm_blend_epi16(tt, t1, 0xCC);
g2(&rows[0], &rows[1], &rows[2], &rows[3], t1);
diagonalize(&rows[0], &rows[2], &rows[3]);
t2 = _mm_unpacklo_epi64(m3, m1);
tt = _mm_blend_epi16(t2, m2, 0xC0);
t2 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(1, 3, 2, 0));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t2);
t3 = _mm_unpackhi_epi32(m1, m3);
tt = _mm_unpacklo_epi32(m2, t3);
t3 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(0, 1, 3, 2));
g2(&rows[0], &rows[1], &rows[2], &rows[3], t3);
undiagonalize(&rows[0], &rows[2], &rows[3]);
m0 = t0;
m1 = t1;
m2 = t2;
m3 = t3;
// Round 4
t0 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(3, 1, 1, 2));
t0 = _mm_shuffle_epi32(t0, _MM_SHUFFLE(0, 3, 2, 1));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t0);
t1 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(3, 3, 2, 2));
tt = _mm_shuffle_epi32(m0, _MM_SHUFFLE(0, 0, 3, 3));
t1 = _mm_blend_epi16(tt, t1, 0xCC);
g2(&rows[0], &rows[1], &rows[2], &rows[3], t1);
diagonalize(&rows[0], &rows[2], &rows[3]);
t2 = _mm_unpacklo_epi64(m3, m1);
tt = _mm_blend_epi16(t2, m2, 0xC0);
t2 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(1, 3, 2, 0));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t2);
t3 = _mm_unpackhi_epi32(m1, m3);
tt = _mm_unpacklo_epi32(m2, t3);
t3 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(0, 1, 3, 2));
g2(&rows[0], &rows[1], &rows[2], &rows[3], t3);
undiagonalize(&rows[0], &rows[2], &rows[3]);
m0 = t0;
m1 = t1;
m2 = t2;
m3 = t3;
// Round 5
t0 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(3, 1, 1, 2));
t0 = _mm_shuffle_epi32(t0, _MM_SHUFFLE(0, 3, 2, 1));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t0);
t1 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(3, 3, 2, 2));
tt = _mm_shuffle_epi32(m0, _MM_SHUFFLE(0, 0, 3, 3));
t1 = _mm_blend_epi16(tt, t1, 0xCC);
g2(&rows[0], &rows[1], &rows[2], &rows[3], t1);
diagonalize(&rows[0], &rows[2], &rows[3]);
t2 = _mm_unpacklo_epi64(m3, m1);
tt = _mm_blend_epi16(t2, m2, 0xC0);
t2 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(1, 3, 2, 0));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t2);
t3 = _mm_unpackhi_epi32(m1, m3);
tt = _mm_unpacklo_epi32(m2, t3);
t3 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(0, 1, 3, 2));
g2(&rows[0], &rows[1], &rows[2], &rows[3], t3);
undiagonalize(&rows[0], &rows[2], &rows[3]);
m0 = t0;
m1 = t1;
m2 = t2;
m3 = t3;
// Round 6
t0 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(3, 1, 1, 2));
t0 = _mm_shuffle_epi32(t0, _MM_SHUFFLE(0, 3, 2, 1));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t0);
t1 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(3, 3, 2, 2));
tt = _mm_shuffle_epi32(m0, _MM_SHUFFLE(0, 0, 3, 3));
t1 = _mm_blend_epi16(tt, t1, 0xCC);
g2(&rows[0], &rows[1], &rows[2], &rows[3], t1);
diagonalize(&rows[0], &rows[2], &rows[3]);
t2 = _mm_unpacklo_epi64(m3, m1);
tt = _mm_blend_epi16(t2, m2, 0xC0);
t2 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(1, 3, 2, 0));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t2);
t3 = _mm_unpackhi_epi32(m1, m3);
tt = _mm_unpacklo_epi32(m2, t3);
t3 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(0, 1, 3, 2));
g2(&rows[0], &rows[1], &rows[2], &rows[3], t3);
undiagonalize(&rows[0], &rows[2], &rows[3]);
m0 = t0;
m1 = t1;
m2 = t2;
m3 = t3;
// Round 7
t0 = _mm_shuffle_ps2(m0, m1, _MM_SHUFFLE(3, 1, 1, 2));
t0 = _mm_shuffle_epi32(t0, _MM_SHUFFLE(0, 3, 2, 1));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t0);
t1 = _mm_shuffle_ps2(m2, m3, _MM_SHUFFLE(3, 3, 2, 2));
tt = _mm_shuffle_epi32(m0, _MM_SHUFFLE(0, 0, 3, 3));
t1 = _mm_blend_epi16(tt, t1, 0xCC);
g2(&rows[0], &rows[1], &rows[2], &rows[3], t1);
diagonalize(&rows[0], &rows[2], &rows[3]);
t2 = _mm_unpacklo_epi64(m3, m1);
tt = _mm_blend_epi16(t2, m2, 0xC0);
t2 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(1, 3, 2, 0));
g1(&rows[0], &rows[1], &rows[2], &rows[3], t2);
t3 = _mm_unpackhi_epi32(m1, m3);
tt = _mm_unpacklo_epi32(m2, t3);
t3 = _mm_shuffle_epi32(tt, _MM_SHUFFLE(0, 1, 3, 2));
g2(&rows[0], &rows[1], &rows[2], &rows[3], t3);
undiagonalize(&rows[0], &rows[2], &rows[3]);
}
void blake3_compress_in_place_sse41(uint32_t cv[8],
const uint8_t block[BLAKE3_BLOCK_LEN],
uint8_t block_len, uint64_t counter,
uint8_t flags) {
__m128i rows[4];
compress_pre(rows, cv, block, block_len, counter, flags);
storeu(xorv(rows[0], rows[2]), (uint8_t *)&cv[0]);
storeu(xorv(rows[1], rows[3]), (uint8_t *)&cv[4]);
}
void blake3_compress_xof_sse41(const uint32_t cv[8],
const uint8_t block[BLAKE3_BLOCK_LEN],
uint8_t block_len, uint64_t counter,
uint8_t flags, uint8_t out[64]) {
__m128i rows[4];
compress_pre(rows, cv, block, block_len, counter, flags);
storeu(xorv(rows[0], rows[2]), &out[0]);
storeu(xorv(rows[1], rows[3]), &out[16]);
storeu(xorv(rows[2], loadu((uint8_t *)&cv[0])), &out[32]);
storeu(xorv(rows[3], loadu((uint8_t *)&cv[4])), &out[48]);
}
INLINE void round_fn(__m128i v[16], __m128i 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(__m128i vecs[DEGREE]) {
// Interleave 32-bit lates. The low unpack is lanes 00/11 and the high is
// 22/33. Note that this doesn't split the vector into two lanes, as the
// AVX2 counterparts do.
__m128i ab_01 = _mm_unpacklo_epi32(vecs[0], vecs[1]);
__m128i ab_23 = _mm_unpackhi_epi32(vecs[0], vecs[1]);
__m128i cd_01 = _mm_unpacklo_epi32(vecs[2], vecs[3]);
__m128i cd_23 = _mm_unpackhi_epi32(vecs[2], vecs[3]);
// Interleave 64-bit lanes.
__m128i abcd_0 = _mm_unpacklo_epi64(ab_01, cd_01);
__m128i abcd_1 = _mm_unpackhi_epi64(ab_01, cd_01);
__m128i abcd_2 = _mm_unpacklo_epi64(ab_23, cd_23);
__m128i abcd_3 = _mm_unpackhi_epi64(ab_23, cd_23);
vecs[0] = abcd_0;
vecs[1] = abcd_1;
vecs[2] = abcd_2;
vecs[3] = abcd_3;
}
INLINE void transpose_msg_vecs(const uint8_t *const *inputs,
size_t block_offset, __m128i out[16]) {
out[0] = loadu(&inputs[0][block_offset + 0 * sizeof(__m128i)]);
out[1] = loadu(&inputs[1][block_offset + 0 * sizeof(__m128i)]);
out[2] = loadu(&inputs[2][block_offset + 0 * sizeof(__m128i)]);
out[3] = loadu(&inputs[3][block_offset + 0 * sizeof(__m128i)]);
out[4] = loadu(&inputs[0][block_offset + 1 * sizeof(__m128i)]);
out[5] = loadu(&inputs[1][block_offset + 1 * sizeof(__m128i)]);
out[6] = loadu(&inputs[2][block_offset + 1 * sizeof(__m128i)]);
out[7] = loadu(&inputs[3][block_offset + 1 * sizeof(__m128i)]);
out[8] = loadu(&inputs[0][block_offset + 2 * sizeof(__m128i)]);
out[9] = loadu(&inputs[1][block_offset + 2 * sizeof(__m128i)]);
out[10] = loadu(&inputs[2][block_offset + 2 * sizeof(__m128i)]);
out[11] = loadu(&inputs[3][block_offset + 2 * sizeof(__m128i)]);
out[12] = loadu(&inputs[0][block_offset + 3 * sizeof(__m128i)]);
out[13] = loadu(&inputs[1][block_offset + 3 * sizeof(__m128i)]);
out[14] = loadu(&inputs[2][block_offset + 3 * sizeof(__m128i)]);
out[15] = loadu(&inputs[3][block_offset + 3 * sizeof(__m128i)]);
for (size_t i = 0; i < 4; ++i) {
_mm_prefetch((const void *)&inputs[i][block_offset + 256], _MM_HINT_T0);
}
transpose_vecs(&out[0]);
transpose_vecs(&out[4]);
transpose_vecs(&out[8]);
transpose_vecs(&out[12]);
}
INLINE void load_counters(uint64_t counter, bool increment_counter,
__m128i *out_lo, __m128i *out_hi) {
const __m128i mask = _mm_set1_epi32(-(int32_t)increment_counter);
const __m128i add0 = _mm_set_epi32(3, 2, 1, 0);
const __m128i add1 = _mm_and_si128(mask, add0);
__m128i l = _mm_add_epi32(_mm_set1_epi32((int32_t)counter), add1);
__m128i carry = _mm_cmpgt_epi32(_mm_xor_si128(add1, _mm_set1_epi32(0x80000000)),
_mm_xor_si128( l, _mm_set1_epi32(0x80000000)));
__m128i h = _mm_sub_epi32(_mm_set1_epi32((int32_t)(counter >> 32)), carry);
*out_lo = l;
*out_hi = h;
}
static
void blake3_hash4_sse41(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) {
__m128i 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]),
};
__m128i 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;
}
__m128i block_len_vec = set1(BLAKE3_BLOCK_LEN);
__m128i block_flags_vec = set1(block_flags);
__m128i msg_vecs[16];
transpose_msg_vecs(inputs, block * BLAKE3_BLOCK_LEN, msg_vecs);
__m128i 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[0]);
transpose_vecs(&h_vecs[4]);
// The first four vecs now contain the first half of each output, and the
// second four vecs contain the second half of each output.
storeu(h_vecs[0], &out[0 * sizeof(__m128i)]);
storeu(h_vecs[4], &out[1 * sizeof(__m128i)]);
storeu(h_vecs[1], &out[2 * sizeof(__m128i)]);
storeu(h_vecs[5], &out[3 * sizeof(__m128i)]);
storeu(h_vecs[2], &out[4 * sizeof(__m128i)]);
storeu(h_vecs[6], &out[5 * sizeof(__m128i)]);
storeu(h_vecs[3], &out[6 * sizeof(__m128i)]);
storeu(h_vecs[7], &out[7 * sizeof(__m128i)]);
}
INLINE void hash_one_sse41(const uint8_t *input, size_t blocks,
const uint32_t key[8], uint64_t counter,
uint8_t flags, uint8_t flags_start,
uint8_t flags_end, uint8_t out[BLAKE3_OUT_LEN]) {
uint32_t cv[8];
memcpy(cv, key, BLAKE3_KEY_LEN);
uint8_t block_flags = flags | flags_start;
while (blocks > 0) {
if (blocks == 1) {
block_flags |= flags_end;
}
blake3_compress_in_place_sse41(cv, input, BLAKE3_BLOCK_LEN, counter,
block_flags);
input = &input[BLAKE3_BLOCK_LEN];
blocks -= 1;
block_flags = flags;
}
memcpy(out, cv, BLAKE3_OUT_LEN);
}
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) {
while (num_inputs >= DEGREE) {
blake3_hash4_sse41(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];
}
while (num_inputs > 0) {
hash_one_sse41(inputs[0], blocks, key, counter, flags, flags_start,
flags_end, out);
if (increment_counter) {
counter += 1;
}
inputs += 1;
num_inputs -= 1;
out = &out[BLAKE3_OUT_LEN];
}
}
|