deps/flac-1.3.2/src/libFLAC/lpc_intrin_sse.c

   1 /* libFLAC - Free Lossless Audio Codec library
   2  * Copyright (C) 2000-2009  Josh Coalson
   3  * Copyright (C) 2011-2016  Xiph.Org Foundation
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  * notice, this list of conditions and the following disclaimer.
  11  *
  12  * - Redistributions in binary form must reproduce the above copyright
  13  * notice, this list of conditions and the following disclaimer in the
  14  * documentation and/or other materials provided with the distribution.
  15  *
  16  * - Neither the name of the Xiph.org Foundation nor the names of its
  17  * contributors may be used to endorse or promote products derived from
  18  * this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
  24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifdef HAVE_CONFIG_H
  34 #  include <config.h>
  35 #endif
  36
  37 #include "private/cpu.h"
  38
  39 #ifndef FLAC__INTEGER_ONLY_LIBRARY
  40 #ifndef FLAC__NO_ASM
  41 #if (defined FLAC__CPU_IA32 || defined FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN
  42 #include "private/lpc.h"
  43 #ifdef FLAC__SSE_SUPPORTED
  44 #include "FLAC/assert.h"
  45 #include "FLAC/format.h"
  46
  47 #include <xmmintrin.h> /* SSE */
  48
  49 /*   new routines: more unaligned loads, less shuffle
  50  *   old routines: less unaligned loads, more shuffle
  51  *   these *_old routines are equivalent to the ASM routines in ia32/lpc_asm.nasm
  52  */
  53
  54 /* new routines: faster on current Intel (starting from Core i aka Nehalem) and all AMD CPUs */
  55
  56 FLAC__SSE_TARGET("sse")
  57 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_new(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
  58 {
  59         int i;
  60         int limit = data_len - 4;
  61         __m128 sum0;
  62
  63         (void) lag;
  64         FLAC__ASSERT(lag <= 4);
  65         FLAC__ASSERT(lag <= data_len);
  66
  67         sum0 = _mm_setzero_ps();
  68
  69         for(i = 0; i <= limit; i++) {
  70                 __m128 d, d0;
  71                 d0 = _mm_loadu_ps(data+i);
  72                 d = d0; d = _mm_shuffle_ps(d, d, 0);
  73                 sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
  74         }
  75
  76         {
  77                 __m128 d0 = _mm_setzero_ps();
  78                 limit++; if(limit < 0) limit = 0;
  79
  80                 for(i = data_len-1; i >= limit; i--) {
  81                         __m128 d;
  82                         d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
  83                         d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
  84                         d0 = _mm_move_ss(d0, d);
  85                         sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
  86                 }
  87         }
  88
  89         _mm_storeu_ps(autoc,   sum0);
  90 }
  91
  92 FLAC__SSE_TARGET("sse")
  93 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_new(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
  94 {
  95         int i;
  96         int limit = data_len - 8;
  97         __m128 sum0, sum1;
  98
  99         (void) lag;
 100         FLAC__ASSERT(lag <= 8);
 101         FLAC__ASSERT(lag <= data_len);
 102
 103         sum0 = _mm_setzero_ps();
 104         sum1 = _mm_setzero_ps();
 105
 106         for(i = 0; i <= limit; i++) {
 107                 __m128 d, d0, d1;
 108                 d0 = _mm_loadu_ps(data+i);
 109                 d1 = _mm_loadu_ps(data+i+4);
 110                 d = d0; d = _mm_shuffle_ps(d, d, 0);
 111                 sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
 112                 sum1 = _mm_add_ps(sum1, _mm_mul_ps(d1, d));
 113         }
 114
 115         {
 116                 __m128 d0 = _mm_setzero_ps();
 117                 __m128 d1 = _mm_setzero_ps();
 118                 limit++; if(limit < 0) limit = 0;
 119
 120                 for(i = data_len-1; i >= limit; i--) {
 121                         __m128 d;
 122                         d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
 123                         d1 = _mm_shuffle_ps(d1, d1, _MM_SHUFFLE(2,1,0,3));
 124                         d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
 125                         d1 = _mm_move_ss(d1, d0);
 126                         d0 = _mm_move_ss(d0, d);
 127                         sum1 = _mm_add_ps(sum1, _mm_mul_ps(d, d1));
 128                         sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
 129                 }
 130         }
 131
 132         _mm_storeu_ps(autoc,   sum0);
 133         _mm_storeu_ps(autoc+4, sum1);
 134 }
 135
 136 FLAC__SSE_TARGET("sse")
 137 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_new(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
 138 {
 139         int i;
 140         int limit = data_len - 12;
 141         __m128 sum0, sum1, sum2;
 142
 143         (void) lag;
 144         FLAC__ASSERT(lag <= 12);
 145         FLAC__ASSERT(lag <= data_len);
 146
 147         sum0 = _mm_setzero_ps();
 148         sum1 = _mm_setzero_ps();
 149         sum2 = _mm_setzero_ps();
 150
 151         for(i = 0; i <= limit; i++) {
 152                 __m128 d, d0, d1, d2;
 153                 d0 = _mm_loadu_ps(data+i);
 154                 d1 = _mm_loadu_ps(data+i+4);
 155                 d2 = _mm_loadu_ps(data+i+8);
 156                 d = d0; d = _mm_shuffle_ps(d, d, 0);
 157                 sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
 158                 sum1 = _mm_add_ps(sum1, _mm_mul_ps(d1, d));
 159                 sum2 = _mm_add_ps(sum2, _mm_mul_ps(d2, d));
 160         }
 161
 162         {
 163                 __m128 d0 = _mm_setzero_ps();
 164                 __m128 d1 = _mm_setzero_ps();
 165                 __m128 d2 = _mm_setzero_ps();
 166                 limit++; if(limit < 0) limit = 0;
 167
 168                 for(i = data_len-1; i >= limit; i--) {
 169                         __m128 d;
 170                         d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
 171                         d2 = _mm_shuffle_ps(d2, d2, _MM_SHUFFLE(2,1,0,3));
 172                         d1 = _mm_shuffle_ps(d1, d1, _MM_SHUFFLE(2,1,0,3));
 173                         d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
 174                         d2 = _mm_move_ss(d2, d1);
 175                         d1 = _mm_move_ss(d1, d0);
 176                         d0 = _mm_move_ss(d0, d);
 177                         sum2 = _mm_add_ps(sum2, _mm_mul_ps(d, d2));
 178                         sum1 = _mm_add_ps(sum1, _mm_mul_ps(d, d1));
 179                         sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
 180                 }
 181         }
 182
 183         _mm_storeu_ps(autoc,   sum0);
 184         _mm_storeu_ps(autoc+4, sum1);
 185         _mm_storeu_ps(autoc+8, sum2);
 186 }
 187
 188 FLAC__SSE_TARGET("sse")
 189 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_new(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
 190 {
 191         int i;
 192         int limit = data_len - 16;
 193         __m128 sum0, sum1, sum2, sum3;
 194
 195         (void) lag;
 196         FLAC__ASSERT(lag <= 16);
 197         FLAC__ASSERT(lag <= data_len);
 198
 199         sum0 = _mm_setzero_ps();
 200         sum1 = _mm_setzero_ps();
 201         sum2 = _mm_setzero_ps();
 202         sum3 = _mm_setzero_ps();
 203
 204         for(i = 0; i <= limit; i++) {
 205                 __m128 d, d0, d1, d2, d3;
 206                 d0 = _mm_loadu_ps(data+i);
 207                 d1 = _mm_loadu_ps(data+i+4);
 208                 d2 = _mm_loadu_ps(data+i+8);
 209                 d3 = _mm_loadu_ps(data+i+12);
 210                 d = d0; d = _mm_shuffle_ps(d, d, 0);
 211                 sum0 = _mm_add_ps(sum0, _mm_mul_ps(d0, d));
 212                 sum1 = _mm_add_ps(sum1, _mm_mul_ps(d1, d));
 213                 sum2 = _mm_add_ps(sum2, _mm_mul_ps(d2, d));
 214                 sum3 = _mm_add_ps(sum3, _mm_mul_ps(d3, d));
 215         }
 216
 217         {
 218                 __m128 d0 = _mm_setzero_ps();
 219                 __m128 d1 = _mm_setzero_ps();
 220                 __m128 d2 = _mm_setzero_ps();
 221                 __m128 d3 = _mm_setzero_ps();
 222                 limit++; if(limit < 0) limit = 0;
 223
 224                 for(i = data_len-1; i >= limit; i--) {
 225                         __m128 d;
 226                         d = _mm_load_ss(data+i); d = _mm_shuffle_ps(d, d, 0);
 227                         d3 = _mm_shuffle_ps(d3, d3, _MM_SHUFFLE(2,1,0,3));
 228                         d2 = _mm_shuffle_ps(d2, d2, _MM_SHUFFLE(2,1,0,3));
 229                         d1 = _mm_shuffle_ps(d1, d1, _MM_SHUFFLE(2,1,0,3));
 230                         d0 = _mm_shuffle_ps(d0, d0, _MM_SHUFFLE(2,1,0,3));
 231                         d3 = _mm_move_ss(d3, d2);
 232                         d2 = _mm_move_ss(d2, d1);
 233                         d1 = _mm_move_ss(d1, d0);
 234                         d0 = _mm_move_ss(d0, d);
 235                         sum3 = _mm_add_ps(sum3, _mm_mul_ps(d, d3));
 236                         sum2 = _mm_add_ps(sum2, _mm_mul_ps(d, d2));
 237                         sum1 = _mm_add_ps(sum1, _mm_mul_ps(d, d1));
 238                         sum0 = _mm_add_ps(sum0, _mm_mul_ps(d, d0));
 239                 }
 240         }
 241
 242         _mm_storeu_ps(autoc,   sum0);
 243         _mm_storeu_ps(autoc+4, sum1);
 244         _mm_storeu_ps(autoc+8, sum2);
 245         _mm_storeu_ps(autoc+12,sum3);
 246 }
 247
 248 /* old routines: faster on older Intel CPUs (up to Core 2) */
 249
 250 FLAC__SSE_TARGET("sse")
 251 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_old(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
 252 {
 253         __m128 xmm0, xmm2, xmm5;
 254
 255         (void) lag;
 256         FLAC__ASSERT(lag > 0);
 257         FLAC__ASSERT(lag <= 4);
 258         FLAC__ASSERT(lag <= data_len);
 259         FLAC__ASSERT(data_len > 0);
 260
 261         xmm5 = _mm_setzero_ps();
 262
 263         xmm0 = _mm_load_ss(data++);
 264         xmm2 = xmm0;
 265         xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
 266
 267         xmm0 = _mm_mul_ps(xmm0, xmm2);
 268         xmm5 = _mm_add_ps(xmm5, xmm0);
 269
 270         data_len--;
 271
 272         while(data_len)
 273         {
 274                 xmm0 = _mm_load1_ps(data++);
 275
 276                 xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
 277                 xmm2 = _mm_move_ss(xmm2, xmm0);
 278                 xmm0 = _mm_mul_ps(xmm0, xmm2);
 279                 xmm5 = _mm_add_ps(xmm5, xmm0);
 280
 281                 data_len--;
 282         }
 283
 284         _mm_storeu_ps(autoc, xmm5);
 285 }
 286
 287 FLAC__SSE_TARGET("sse")
 288 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_old(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
 289 {
 290         __m128 xmm0, xmm1, xmm2, xmm3, xmm5, xmm6;
 291
 292         (void) lag;
 293         FLAC__ASSERT(lag > 0);
 294         FLAC__ASSERT(lag <= 8);
 295         FLAC__ASSERT(lag <= data_len);
 296         FLAC__ASSERT(data_len > 0);
 297
 298         xmm5 = _mm_setzero_ps();
 299         xmm6 = _mm_setzero_ps();
 300
 301         xmm0 = _mm_load_ss(data++);
 302         xmm2 = xmm0;
 303         xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
 304         xmm3 = _mm_setzero_ps();
 305
 306         xmm0 = _mm_mul_ps(xmm0, xmm2);
 307         xmm5 = _mm_add_ps(xmm5, xmm0);
 308
 309         data_len--;
 310
 311         while(data_len)
 312         {
 313                 xmm0 = _mm_load1_ps(data++);
 314
 315                 xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
 316                 xmm3 = _mm_shuffle_ps(xmm3, xmm3, _MM_SHUFFLE(2,1,0,3));
 317                 xmm3 = _mm_move_ss(xmm3, xmm2);
 318                 xmm2 = _mm_move_ss(xmm2, xmm0);
 319
 320                 xmm1 = xmm0;
 321                 xmm1 = _mm_mul_ps(xmm1, xmm3);
 322                 xmm0 = _mm_mul_ps(xmm0, xmm2);
 323                 xmm6 = _mm_add_ps(xmm6, xmm1);
 324                 xmm5 = _mm_add_ps(xmm5, xmm0);
 325
 326                 data_len--;
 327         }
 328
 329         _mm_storeu_ps(autoc,   xmm5);
 330         _mm_storeu_ps(autoc+4, xmm6);
 331 }
 332
 333 FLAC__SSE_TARGET("sse")
 334 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_old(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
 335 {
 336         __m128 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7;
 337
 338         (void) lag;
 339         FLAC__ASSERT(lag > 0);
 340         FLAC__ASSERT(lag <= 12);
 341         FLAC__ASSERT(lag <= data_len);
 342         FLAC__ASSERT(data_len > 0);
 343
 344         xmm5 = _mm_setzero_ps();
 345         xmm6 = _mm_setzero_ps();
 346         xmm7 = _mm_setzero_ps();
 347
 348         xmm0 = _mm_load_ss(data++);
 349         xmm2 = xmm0;
 350         xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
 351         xmm3 = _mm_setzero_ps();
 352         xmm4 = _mm_setzero_ps();
 353
 354         xmm0 = _mm_mul_ps(xmm0, xmm2);
 355         xmm5 = _mm_add_ps(xmm5, xmm0);
 356
 357         data_len--;
 358
 359         while(data_len)
 360         {
 361                 xmm0 = _mm_load1_ps(data++);
 362
 363                 xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
 364                 xmm3 = _mm_shuffle_ps(xmm3, xmm3, _MM_SHUFFLE(2,1,0,3));
 365                 xmm4 = _mm_shuffle_ps(xmm4, xmm4, _MM_SHUFFLE(2,1,0,3));
 366                 xmm4 = _mm_move_ss(xmm4, xmm3);
 367                 xmm3 = _mm_move_ss(xmm3, xmm2);
 368                 xmm2 = _mm_move_ss(xmm2, xmm0);
 369
 370                 xmm1 = xmm0;
 371                 xmm1 = _mm_mul_ps(xmm1, xmm2);
 372                 xmm5 = _mm_add_ps(xmm5, xmm1);
 373                 xmm1 = xmm0;
 374                 xmm1 = _mm_mul_ps(xmm1, xmm3);
 375                 xmm6 = _mm_add_ps(xmm6, xmm1);
 376                 xmm0 = _mm_mul_ps(xmm0, xmm4);
 377                 xmm7 = _mm_add_ps(xmm7, xmm0);
 378
 379                 data_len--;
 380         }
 381
 382         _mm_storeu_ps(autoc,   xmm5);
 383         _mm_storeu_ps(autoc+4, xmm6);
 384         _mm_storeu_ps(autoc+8, xmm7);
 385 }
 386
 387 FLAC__SSE_TARGET("sse")
 388 void FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_old(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[])
 389 {
 390         __m128 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9;
 391
 392         (void) lag;
 393         FLAC__ASSERT(lag > 0);
 394         FLAC__ASSERT(lag <= 16);
 395         FLAC__ASSERT(lag <= data_len);
 396         FLAC__ASSERT(data_len > 0);
 397
 398         xmm6 = _mm_setzero_ps();
 399         xmm7 = _mm_setzero_ps();
 400         xmm8 = _mm_setzero_ps();
 401         xmm9 = _mm_setzero_ps();
 402
 403         xmm0 = _mm_load_ss(data++);
 404         xmm2 = xmm0;
 405         xmm0 = _mm_shuffle_ps(xmm0, xmm0, 0);
 406         xmm3 = _mm_setzero_ps();
 407         xmm4 = _mm_setzero_ps();
 408         xmm5 = _mm_setzero_ps();
 409
 410         xmm0 = _mm_mul_ps(xmm0, xmm2);
 411         xmm6 = _mm_add_ps(xmm6, xmm0);
 412
 413         data_len--;
 414
 415         while(data_len)
 416         {
 417                 xmm0 = _mm_load1_ps(data++);
 418
 419                 /* shift xmm5:xmm4:xmm3:xmm2 left by one float */
 420                 xmm5 = _mm_shuffle_ps(xmm5, xmm5, _MM_SHUFFLE(2,1,0,3));
 421                 xmm4 = _mm_shuffle_ps(xmm4, xmm4, _MM_SHUFFLE(2,1,0,3));
 422                 xmm3 = _mm_shuffle_ps(xmm3, xmm3, _MM_SHUFFLE(2,1,0,3));
 423                 xmm2 = _mm_shuffle_ps(xmm2, xmm2, _MM_SHUFFLE(2,1,0,3));
 424                 xmm5 = _mm_move_ss(xmm5, xmm4);
 425                 xmm4 = _mm_move_ss(xmm4, xmm3);
 426                 xmm3 = _mm_move_ss(xmm3, xmm2);
 427                 xmm2 = _mm_move_ss(xmm2, xmm0);
 428
 429                 /* xmm9|xmm8|xmm7|xmm6 += xmm0|xmm0|xmm0|xmm0 * xmm5|xmm4|xmm3|xmm2 */
 430                 xmm1 = xmm0;
 431                 xmm1 = _mm_mul_ps(xmm1, xmm5);
 432                 xmm9 = _mm_add_ps(xmm9, xmm1);
 433                 xmm1 = xmm0;
 434                 xmm1 = _mm_mul_ps(xmm1, xmm4);
 435                 xmm8 = _mm_add_ps(xmm8, xmm1);
 436                 xmm1 = xmm0;
 437                 xmm1 = _mm_mul_ps(xmm1, xmm3);
 438                 xmm7 = _mm_add_ps(xmm7, xmm1);
 439                 xmm0 = _mm_mul_ps(xmm0, xmm2);
 440                 xmm6 = _mm_add_ps(xmm6, xmm0);
 441
 442                 data_len--;
 443         }
 444
 445         _mm_storeu_ps(autoc,   xmm6);
 446         _mm_storeu_ps(autoc+4, xmm7);
 447         _mm_storeu_ps(autoc+8, xmm8);
 448         _mm_storeu_ps(autoc+12,xmm9);
 449 }
 450
 451 #endif /* FLAC__SSE_SUPPORTED */
 452 #endif /* (FLAC__CPU_IA32 || FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN */
 453 #endif /* FLAC__NO_ASM */
 454 #endif /* FLAC__INTEGER_ONLY_LIBRARY */