3gpplte_turbo_decoder_sse_16bit.c 58.5 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
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 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
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 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

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/* file: 3gpplte_turbo_decoder_sse_16bit.c
   purpose: Routines for implementing max-logmap decoding of Turbo-coded (DLSCH) transport channels from 36-212, V8.6 2009-03
   authors: raymond.knopp@eurecom.fr, Laurent Thomas (Alcatel-Lucent)
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   date: 21.10.2009
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   Note: This version of the routine currently requires SSE2,SSSE3 and SSE4.1 equipped computers.  It uses 16-bit inputs for
         LLRS and uses 16-bit arithmetic for the internal computations!
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   Changelog: 17.11.2009 FK SSE4.1 not required anymore
   Aug. 2012 new parallelization options for higher speed (8-way parallelization)
   Jan. 2013 8-bit LLR support with 16-way parallelization
   Feb. 2013 New interleaving and hard-decision optimizations (L. Thomas)
   May 2013 Extracted 16bit code
*/

///
///

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#undef __AVX2__
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#include "PHY/sse_intrin.h"
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#ifndef TEST_DEBUG
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#include "PHY/impl_defs_top.h"
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#include "PHY/defs_common.h"
#include "PHY/CODING/coding_defs.h"
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#include "PHY/CODING/lte_interleaver_inline.h"
#else

#include "defs.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif

#ifdef MEX
#include "mex.h"
#endif

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//#define DEBUG_LOGMAP

#ifdef DEBUG_LOGMAP
#define print_shorts(s,x) fprintf(fdsse4,"%s %d,%d,%d,%d,%d,%d,%d,%d\n",s,(x)[0],(x)[1],(x)[2],(x)[3],(x)[4],(x)[5],(x)[6],(x)[7])
#endif
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#undef __AVX2__
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#ifdef DEBUG_LOGMAP
FILE *fdsse4;
#endif
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typedef int16_t llr_t; // internal decoder LLR data is 16-bit fixed
typedef int16_t channel_t;
#define MAX 256

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void log_map16(llr_t* systematic,channel_t* y_parity, llr_t* m11, llr_t* m10, llr_t *alpha, llr_t *beta, llr_t* ext,unsigned short frame_length,unsigned char term_flag,unsigned char F,
               int offset8_flag,time_stats_t *alpha_stats,time_stats_t *beta_stats,time_stats_t *gamma_stats,time_stats_t *ext_stats);
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void compute_gamma16(llr_t* m11,llr_t* m10,llr_t* systematic, channel_t* y_parity, unsigned short frame_length,unsigned char term_flag);
void compute_alpha16(llr_t*alpha,llr_t *beta, llr_t* m11,llr_t* m10, unsigned short frame_length,unsigned char F);
void compute_beta16(llr_t*alpha, llr_t* beta,llr_t* m11,llr_t* m10, unsigned short frame_length,unsigned char F,int offset8_flag);
void compute_ext16(llr_t* alpha,llr_t* beta,llr_t* m11,llr_t* m10,llr_t* extrinsic, llr_t* ap, unsigned short frame_length);


void log_map16(llr_t* systematic,
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               channel_t* y_parity,
               llr_t* m11,
               llr_t* m10,
               llr_t *alpha,
               llr_t *beta,
               llr_t* ext,
               unsigned short frame_length,
               unsigned char term_flag,
               unsigned char F,
               int offset8_flag,
               time_stats_t *alpha_stats,
               time_stats_t *beta_stats,
               time_stats_t *gamma_stats,
               time_stats_t *ext_stats)
{

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#ifdef DEBUG_LOGMAP
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  fprintf(fdsse4,"log_map, frame_length %d\n",frame_length);
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#endif

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  start_meas(gamma_stats) ;
  compute_gamma16(m11,m10,systematic,y_parity,frame_length,term_flag) ;
  stop_meas(gamma_stats);
  start_meas(alpha_stats) ;
  compute_alpha16(alpha,beta,m11,m10,frame_length,F)                  ;
  stop_meas(alpha_stats);
  start_meas(beta_stats)  ;
  compute_beta16(alpha,beta,m11,m10,frame_length,F,offset8_flag)      ;
  stop_meas(beta_stats);
  start_meas(ext_stats)   ;
  compute_ext16(alpha,beta,m11,m10,ext,systematic,frame_length)       ;
  stop_meas(ext_stats);
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}

void compute_gamma16(llr_t* m11,llr_t* m10,llr_t* systematic,channel_t* y_parity,
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                     unsigned short frame_length,unsigned char term_flag)
{
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  int k,K1;
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#if defined(__x86_64__)||defined(__i386__)
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  __m128i *systematic128 = (__m128i *)systematic;
  __m128i *y_parity128   = (__m128i *)y_parity;
  __m128i *m10_128        = (__m128i *)m10;
  __m128i *m11_128        = (__m128i *)m11;
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#elif defined(__arm__)
  int16x8_t *systematic128  = (int16x8_t *)systematic;
  int16x8_t *y_parity128    = (int16x8_t *)y_parity;
  int16x8_t *m10_128        = (int16x8_t *)m10;
  int16x8_t *m11_128        = (int16x8_t *)m11;
#endif
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#ifdef DEBUG_LOGMAP
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  fprintf(fdsse4,"compute_gamma (sse_16bit), %p,%p,%p,%p,framelength %d\n",m11,m10,systematic,y_parity,frame_length);
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#endif

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#ifndef __AVX2__
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  K1=frame_length>>3;
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#else
  if ((frame_length&15) > 0)
    K1=(frame_length+1)>>4;
  else
    K1=frame_length>>4;
#endif
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  for (k=0; k<K1; k++) {
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#if defined(__x86_64__) || defined(__i386__)
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#ifndef __AVX2__
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    m11_128[k] = _mm_srai_epi16(_mm_adds_epi16(systematic128[k],y_parity128[k]),1);
    m10_128[k] = _mm_srai_epi16(_mm_subs_epi16(systematic128[k],y_parity128[k]),1);
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#else
    ((__m256i*)m11_128)[k] = _mm256_srai_epi16(_mm256_adds_epi16(((__m256i*)systematic128)[k],((__m256i*)y_parity128)[k]),1);
    //    ((__m256i*)m10_128)[k] = _mm256_srai_epi16(_mm256_subs_epi16(((__m256i*)y_parity128)[k],((__m256i*)systematic128)[k]),1);
    ((__m256i*)m10_128)[k] = _mm256_srai_epi16(_mm256_subs_epi16(((__m256i*)systematic128)[k],((__m256i*)y_parity128)[k]),1);
#endif
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#elif defined(__arm__)
    m11_128[k] = vhaddq_s16(systematic128[k],y_parity128[k]);
    m10_128[k] = vhsubq_s16(systematic128[k],y_parity128[k]);
#endif
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#ifdef DEBUG_LOGMAP
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    fprintf(fdsse4,"Loop index k %d\n", k);
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    print_shorts("sys",(int16_t*)&systematic128[k]);
    print_shorts("yp",(int16_t*)&y_parity128[k]);
    print_shorts("m11",(int16_t*)&m11_128[k]);
    print_shorts("m10",(int16_t*)&m10_128[k]);
#endif
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  }
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  k=frame_length>>3;
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  // Termination
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#if defined(__x86_64__) || defined(__i386__)
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  m11_128[k] = _mm_srai_epi16(_mm_adds_epi16(systematic128[k+term_flag],y_parity128[k]),1);
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  //#ifndef __AVX2__
#if 1
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  m10_128[k] = _mm_srai_epi16(_mm_subs_epi16(systematic128[k+term_flag],y_parity128[k]),1);
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#else
  m10_128[k] = _mm_srai_epi16(_mm_subs_epi16(y_parity128[k],systematic128[k+term_flag]),1);
#endif
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#elif defined(__arm__)
  m11_128[k] = vhaddq_s16(systematic128[k+term_flag],y_parity128[k]);
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  m10_128[k] = vhsubq_s16(systematic128[k+term_flag],y_parity128[k]);
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#endif

#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"Loop index k %d (term flag %d)\n", k,term_flag);
print_shorts("sys",(int16_t*)&systematic128[k]);
    print_shorts("yp",(int16_t*)&y_parity128[k]);
    print_shorts("m11",(int16_t*)&m11_128[k]);
    print_shorts("m10",(int16_t*)&m10_128[k]);
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#endif
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}

#define L 40

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void compute_alpha16(llr_t* alpha,llr_t* beta,llr_t* m_11,llr_t* m_10,unsigned short frame_length,unsigned char F)
{
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  int k,l,l2,K1,rerun_flag=0;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *alpha128=(__m128i *)alpha,*alpha_ptr,*m11p,*m10p;
  //#ifndef __AVX2__
#if 1
  __m128i a0,a1,a2,a3,a4,a5,a6,a7;
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  __m128i m_b0,m_b1,m_b2,m_b3,m_b4,m_b5,m_b6,m_b7;
  __m128i new0,new1,new2,new3,new4,new5,new6,new7;
  __m128i alpha_max;
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#else
  __m256i *alpha256=(__m256i *)alpha,*alpha_ptr256,m11,m10;
  __m256i a01,a23,a45,a67,a02,a13,a64,a75;
  __m256i m_b01,m_b23,m_b45,m_b67,new01,new23,new45,new67;
  __m256i m11m10_256;
  __m256i alpha_max;
#endif

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#elif defined(__arm__)
  int16x8_t *alpha128=(int16x8_t *)alpha,*alpha_ptr;
  int16x8_t a0,a1,a2,a3,a4,a5,a6,a7,*m11p,*m10p;
  int16x8_t m_b0,m_b1,m_b2,m_b3,m_b4,m_b5,m_b6,m_b7;
  int16x8_t new0,new1,new2,new3,new4,new5,new6,new7;
  int16x8_t alpha_max;
#endif
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  l2 = L>>3;
  K1 = (frame_length>>3);
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#ifdef DEBUG_LOGMAP
  fprintf(fdsse4,"compute_alpha (sse_16bit)\n");
#endif
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  for (l=K1;; l=l2,rerun_flag=1) {
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#if defined(__x86_64__) || defined(__i386__)
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    alpha128 = (__m128i *)alpha;
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    //#ifdef __AVX2__
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#elif defined(__arm__)
    alpha128 = (int16x8_t *)alpha;
#endif
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    if (rerun_flag == 0) {
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#if defined(__x86_64__) || defined(__i386__)
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      alpha128[0] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,0);
      alpha128[1] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[2] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[3] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[4] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[5] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[6] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[7] = _mm_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
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#elif defined(__arm__)
      alpha128[0] = vdupq_n_s16(-MAX/2);
      alpha128[0] = vsetq_lane_s16(0,alpha128[0],0);
      alpha128[1] = vdupq_n_s16(-MAX/2);
      alpha128[2] = vdupq_n_s16(-MAX/2);
      alpha128[3] = vdupq_n_s16(-MAX/2);
      alpha128[4] = vdupq_n_s16(-MAX/2);
      alpha128[5] = vdupq_n_s16(-MAX/2);
      alpha128[6] = vdupq_n_s16(-MAX/2);
      alpha128[7] = vdupq_n_s16(-MAX/2);
#endif
#ifdef DEBUG_LOGMAP
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      fprintf(fdsse4,"Initial alpha\n");
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      print_shorts("a0",(int16_t*)&alpha128[0]);
      print_shorts("a1",(int16_t*)&alpha128[1]);
      print_shorts("a2",(int16_t*)&alpha128[2]);
      print_shorts("a3",(int16_t*)&alpha128[3]);
      print_shorts("a4",(int16_t*)&alpha128[4]);
      print_shorts("a5",(int16_t*)&alpha128[5]);
      print_shorts("a6",(int16_t*)&alpha128[6]);
      print_shorts("a7",(int16_t*)&alpha128[7]);
#endif
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    } else {
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      //set initial alpha in columns 1-7 from final alpha from last run in columns 0-6
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#if defined(__x86_64__) || defined(__i386__)
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      alpha128[0] = _mm_slli_si128(alpha128[frame_length],2);
      alpha128[1] = _mm_slli_si128(alpha128[1+frame_length],2);
      alpha128[2] = _mm_slli_si128(alpha128[2+frame_length],2);
      alpha128[3] = _mm_slli_si128(alpha128[3+frame_length],2);
      alpha128[4] = _mm_slli_si128(alpha128[4+frame_length],2);
      alpha128[5] = _mm_slli_si128(alpha128[5+frame_length],2);
      alpha128[6] = _mm_slli_si128(alpha128[6+frame_length],2);
      alpha128[7] = _mm_slli_si128(alpha128[7+frame_length],2);
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#elif defined(__arm__)
      alpha128[0] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[frame_length],16);   alpha128[0] = vsetq_lane_s16(alpha[8],alpha128[0],3);
      alpha128[1] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[1+frame_length],16); alpha128[1] = vsetq_lane_s16(alpha[24],alpha128[0],3);
      alpha128[2] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[2+frame_length],16); alpha128[2] = vsetq_lane_s16(alpha[40],alpha128[0],3);
      alpha128[3] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[3+frame_length],16); alpha128[3] = vsetq_lane_s16(alpha[56],alpha128[0],3);
      alpha128[4] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[4+frame_length],16); alpha128[4] = vsetq_lane_s16(alpha[72],alpha128[0],3);
      alpha128[5] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[5+frame_length],16); alpha128[5] = vsetq_lane_s16(alpha[88],alpha128[0],3);
      alpha128[6] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[6+frame_length],16); alpha128[6] = vsetq_lane_s16(alpha[104],alpha128[0],3);
      alpha128[7] = (int16x8_t)vshlq_n_s64((int64x2_t)alpha128[7+frame_length],16); alpha128[7] = vsetq_lane_s16(alpha[120],alpha128[0],3);
#endif
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      // set initial alpha in column 0 to (0,-MAX/2,...,-MAX/2)
      alpha[8] = -MAX/2;
      alpha[16] = -MAX/2;
      alpha[24] = -MAX/2;
      alpha[32] = -MAX/2;
      alpha[40] = -MAX/2;
      alpha[48] = -MAX/2;
      alpha[56] = -MAX/2;
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#ifdef DEBUG_LOGMAP
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      fprintf(fdsse4,"Second run\n");
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      print_shorts("a0",(int16_t*)&alpha128[0]);
      print_shorts("a1",(int16_t*)&alpha128[1]);
      print_shorts("a2",(int16_t*)&alpha128[2]);
      print_shorts("a3",(int16_t*)&alpha128[3]);
      print_shorts("a4",(int16_t*)&alpha128[4]);
      print_shorts("a5",(int16_t*)&alpha128[5]);
      print_shorts("a6",(int16_t*)&alpha128[6]);
      print_shorts("a7",(int16_t*)&alpha128[7]);
#endif

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    }
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    alpha_ptr = &alpha128[0];
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    //#ifdef __AVX2__
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#if defined(__x86_64__) || defined(__i386__)
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    m11p = (__m128i*)m_11;
    m10p = (__m128i*)m_10;
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#elif defined(__arm__)
    m11p = (int16x8_t*)m_11;
    m10p = (int16x8_t*)m_10;
#endif
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    for (k=0;
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         k<l;
         k++) {
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#if defined(__x86_64__) || defined(__i386__)
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      //#ifndef __AVX2__
#if 1
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      a1=_mm_load_si128(&alpha_ptr[1]);
      a3=_mm_load_si128(&alpha_ptr[3]);
      a5=_mm_load_si128(&alpha_ptr[5]);
      a7=_mm_load_si128(&alpha_ptr[7]);

      m_b0 = _mm_adds_epi16(a1,*m11p);  // m11
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      m_b4 = _mm_subs_epi16(a1,*m11p);  // m00=-m11
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      m_b1 = _mm_subs_epi16(a3,*m10p);  // m01=-m10
      m_b5 = _mm_adds_epi16(a3,*m10p);  // m10
      m_b2 = _mm_adds_epi16(a5,*m10p);  // m10
      m_b6 = _mm_subs_epi16(a5,*m10p);  // m01=-m10
      m_b3 = _mm_subs_epi16(a7,*m11p);  // m00=-m11
      m_b7 = _mm_adds_epi16(a7,*m11p);  // m11

      a0=_mm_load_si128(&alpha_ptr[0]);
      a2=_mm_load_si128(&alpha_ptr[2]);
      a4=_mm_load_si128(&alpha_ptr[4]);
      a6=_mm_load_si128(&alpha_ptr[6]);
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      new0 = _mm_subs_epi16(a0,*m11p);  // m00=-m11
      new4 = _mm_adds_epi16(a0,*m11p);  // m11
      new1 = _mm_adds_epi16(a2,*m10p);  // m10
      new5 = _mm_subs_epi16(a2,*m10p);  // m01=-m10
      new2 = _mm_subs_epi16(a4,*m10p);  // m01=-m10
      new6 = _mm_adds_epi16(a4,*m10p);  // m10
      new3 = _mm_adds_epi16(a6,*m11p);  // m11
      new7 = _mm_subs_epi16(a6,*m11p);  // m00=-m11
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      a0 = _mm_max_epi16(m_b0,new0);
      a1 = _mm_max_epi16(m_b1,new1);
      a2 = _mm_max_epi16(m_b2,new2);
      a3 = _mm_max_epi16(m_b3,new3);
      a4 = _mm_max_epi16(m_b4,new4);
      a5 = _mm_max_epi16(m_b5,new5);
      a6 = _mm_max_epi16(m_b6,new6);
      a7 = _mm_max_epi16(m_b7,new7);

      alpha_max = _mm_max_epi16(a0,a1);
      alpha_max = _mm_max_epi16(alpha_max,a2);
      alpha_max = _mm_max_epi16(alpha_max,a3);
      alpha_max = _mm_max_epi16(alpha_max,a4);
      alpha_max = _mm_max_epi16(alpha_max,a5);
      alpha_max = _mm_max_epi16(alpha_max,a6);
      alpha_max = _mm_max_epi16(alpha_max,a7);
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#else
      a02=_mm256_load_si256(&alpha_ptr256[0]);
      a13=_mm256_load_si256(&alpha_ptr256[1]);
      a64=_mm256_load_si256(&alpha_ptr256[2]);
      a75=_mm256_load_si256(&alpha_ptr256[3]);
      m11m10_256 = _mm256_insertf128_si256(m11m10_256,*m11p,0);
      m11m10_256 = _mm256_insertf128_si256(m11m10_256,*m10p,1);


      m_b01 = _mm256_adds_epi16(a13,m11m10_256); //negative m10
      m_b23 = _mm256_subs_epi16(a75,m11m10_256); //negative m10
      m_b45 = _mm256_subs_epi16(a13,m11m10_256); //negative m10
      m_b67 = _mm256_adds_epi16(a75,m11m10_256); //negative m10

      new01 = _mm256_subs_epi16(a02,m11m10_256);  //negative m10
      new23 = _mm256_adds_epi16(a64,m11m10_256);  //negative m10
      new45 = _mm256_adds_epi16(a02,m11m10_256);  //negative m10
      new67 = _mm256_subs_epi16(a64,m11m10_256);  //negative m10

      a01   = _mm256_max_epi16(m_b01,new01);
      a23   = _mm256_max_epi16(m_b23,new23);
      a45   = _mm256_max_epi16(m_b45,new45);
      a67   = _mm256_max_epi16(m_b67,new67);

      alpha_max = _mm256_max_epi16(a01,a23);
      alpha_max = _mm256_max_epi16(alpha_max,a45);
      alpha_max = _mm256_max_epi16(alpha_max,a67);
      alpha_max = _mm256_max_epi16(alpha_max,_mm256_permutevar8x32_epi32(alpha_max,_mm256_set_epi32(3,2,1,0,7,6,5,4)));
      
      
#endif
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
#elif defined(__arm__)
      m_b0 = vqaddq_s16(alpha_ptr[1],*m11p);  // m11
      m_b4 = vqsubq_s16(alpha_ptr[1],*m11p);  // m00=-m11
      m_b1 = vqsubq_s16(alpha_ptr[3],*m10p);  // m01=-m10
      m_b5 = vqaddq_s16(alpha_ptr[3],*m10p);  // m10
      m_b2 = vqaddq_s16(alpha_ptr[5],*m10p);  // m10
      m_b6 = vqsubq_s16(alpha_ptr[5],*m10p);  // m01=-m10
      m_b3 = vqsubq_s16(alpha_ptr[7],*m11p);  // m00=-m11
      m_b7 = vqaddq_s16(alpha_ptr[7],*m11p);  // m11

      new0 = vqsubq_s16(alpha_ptr[0],*m11p);  // m00=-m11
      new4 = vqaddq_s16(alpha_ptr[0],*m11p);  // m11
      new1 = vqaddq_s16(alpha_ptr[2],*m10p);  // m10
      new5 = vqsubq_s16(alpha_ptr[2],*m10p);  // m01=-m10
      new2 = vqsubq_s16(alpha_ptr[4],*m10p);  // m01=-m10
      new6 = vqaddq_s16(alpha_ptr[4],*m10p);  // m10
      new3 = vqaddq_s16(alpha_ptr[6],*m11p);  // m11
      new7 = vqsubq_s16(alpha_ptr[6],*m11p);  // m00=-m11
      a0 = vmaxq_s16(m_b0,new0);
      a1 = vmaxq_s16(m_b1,new1);
      a2 = vmaxq_s16(m_b2,new2);
      a3 = vmaxq_s16(m_b3,new3);
      a4 = vmaxq_s16(m_b4,new4);
      a5 = vmaxq_s16(m_b5,new5);
      a6 = vmaxq_s16(m_b6,new6);
      a7 = vmaxq_s16(m_b7,new7);

      // compute and subtract maxima
      alpha_max = vmaxq_s16(a0,a1);
      alpha_max = vmaxq_s16(alpha_max,a2);
      alpha_max = vmaxq_s16(alpha_max,a3);
      alpha_max = vmaxq_s16(alpha_max,a4);
      alpha_max = vmaxq_s16(alpha_max,a5);
      alpha_max = vmaxq_s16(alpha_max,a6);
      alpha_max = vmaxq_s16(alpha_max,a7);

#endif
442 443

      alpha_ptr+=8;
444
      //#ifdef __AVX2__
445
      m11p++;
446
      m10p++;
447
#if defined(__x86_64__) || defined(__i386__)
448 449
      //#ifndef __AVX2__
#if 1
450 451 452 453 454 455 456 457
      alpha_ptr[0] = _mm_subs_epi16(a0,alpha_max);
      alpha_ptr[1] = _mm_subs_epi16(a1,alpha_max);
      alpha_ptr[2] = _mm_subs_epi16(a2,alpha_max);
      alpha_ptr[3] = _mm_subs_epi16(a3,alpha_max);
      alpha_ptr[4] = _mm_subs_epi16(a4,alpha_max);
      alpha_ptr[5] = _mm_subs_epi16(a5,alpha_max);
      alpha_ptr[6] = _mm_subs_epi16(a6,alpha_max);
      alpha_ptr[7] = _mm_subs_epi16(a7,alpha_max);
458 459 460 461 462 463 464 465 466 467 468 469
#else

      a01   = _mm256_subs_epi16(a01,alpha_max);
      a23   = _mm256_subs_epi16(a23,alpha_max);
      a45   = _mm256_subs_epi16(a45,alpha_max);
      a67   = _mm256_subs_epi16(a67,alpha_max);

      alpha_ptr256[0] = _mm256_permute2x128_si256(a01,a23,0x20);  //a02
      alpha_ptr256[1] = _mm256_permute2x128_si256(a01,a23,0x13);  //a13
      alpha_ptr256[2] = _mm256_permute2x128_si256(a45,a67,0x02);  //a64
      alpha_ptr256[3] = _mm256_permute2x128_si256(a45,a67,0x31);  //a75
#endif
470 471 472 473 474 475 476 477 478 479 480 481
#elif defined(__arm__)
      alpha_ptr[0] = vqsubq_s16(a0,alpha_max);
      alpha_ptr[1] = vqsubq_s16(a1,alpha_max);
      alpha_ptr[2] = vqsubq_s16(a2,alpha_max);
      alpha_ptr[3] = vqsubq_s16(a3,alpha_max);
      alpha_ptr[4] = vqsubq_s16(a4,alpha_max);
      alpha_ptr[5] = vqsubq_s16(a5,alpha_max);
      alpha_ptr[6] = vqsubq_s16(a6,alpha_max);
      alpha_ptr[7] = vqsubq_s16(a7,alpha_max);
#endif

#ifdef DEBUG_LOGMAP
482
      fprintf(fdsse4,"Loop index %d\n",k);
483 484 485 486 487 488 489 490 491
      print_shorts("mb0",(int16_t*)&m_b0);
      print_shorts("mb1",(int16_t*)&m_b1);
      print_shorts("mb2",(int16_t*)&m_b2);
      print_shorts("mb3",(int16_t*)&m_b3);
      print_shorts("mb4",(int16_t*)&m_b4);
      print_shorts("mb5",(int16_t*)&m_b5);
      print_shorts("mb6",(int16_t*)&m_b6);
      print_shorts("mb7",(int16_t*)&m_b7);

492
      fprintf(fdsse4,"Loop index %d, new\n",k);
493 494 495 496 497 498 499 500 501
      print_shorts("new0",(int16_t*)&new0);
      print_shorts("new1",(int16_t*)&new1);
      print_shorts("new2",(int16_t*)&new2);
      print_shorts("new3",(int16_t*)&new3);
      print_shorts("new4",(int16_t*)&new4);
      print_shorts("new5",(int16_t*)&new5);
      print_shorts("new6",(int16_t*)&new6);
      print_shorts("new7",(int16_t*)&new7);

502
      fprintf(fdsse4,"Loop index %d, after max\n",k);
503 504 505 506 507 508 509 510 511
      print_shorts("a0",(int16_t*)&a0);
      print_shorts("a1",(int16_t*)&a1);
      print_shorts("a2",(int16_t*)&a2);
      print_shorts("a3",(int16_t*)&a3);
      print_shorts("a4",(int16_t*)&a4);
      print_shorts("a5",(int16_t*)&a5);
      print_shorts("a6",(int16_t*)&a6);
      print_shorts("a7",(int16_t*)&a7);

512
      fprintf(fdsse4,"Loop index %d\n",k);
513 514 515 516 517 518 519 520 521
      print_shorts("a0",(int16_t*)&alpha_ptr[0]);
      print_shorts("a1",(int16_t*)&alpha_ptr[1]);
      print_shorts("a2",(int16_t*)&alpha_ptr[2]);
      print_shorts("a3",(int16_t*)&alpha_ptr[3]);
      print_shorts("a4",(int16_t*)&alpha_ptr[4]);
      print_shorts("a5",(int16_t*)&alpha_ptr[5]);
      print_shorts("a6",(int16_t*)&alpha_ptr[6]);
      print_shorts("a7",(int16_t*)&alpha_ptr[7]);
#endif
522 523 524 525 526

    }

    if (rerun_flag==1)
      break;
527
  }
528 529 530
}


531 532 533
void compute_beta16(llr_t* alpha,llr_t* beta,llr_t *m_11,llr_t* m_10,unsigned short frame_length,unsigned char F,int offset8_flag)
{

534
  int k,rerun_flag=0;
535
#if defined(__x86_64__) || defined(__i386__)
536 537 538 539 540
  __m128i m11_128,m10_128;
  __m128i m_b0,m_b1,m_b2,m_b3,m_b4,m_b5,m_b6,m_b7;
  __m128i new0,new1,new2,new3,new4,new5,new6,new7;

  __m128i *beta128,*alpha128,*beta_ptr;
541
  __m128i beta_max;
542 543 544 545 546 547 548 549 550
#elif defined(__arm__)
  int16x8_t m11_128,m10_128;
  int16x8_t m_b0,m_b1,m_b2,m_b3,m_b4,m_b5,m_b6,m_b7;
  int16x8_t new0,new1,new2,new3,new4,new5,new6,new7;

  int16x8_t *beta128,*alpha128,*beta_ptr;
  int16x8_t beta_max;
#endif

551
  int16_t m11,m10,beta0_16,beta1_16,beta2_16,beta3_16,beta4_16,beta5_16,beta6_16,beta7_16,beta0_2,beta1_2,beta2_2,beta3_2,beta_m;
552 553 554
  llr_t beta0,beta1;

#ifdef DEBUG_LOGMAP
555 556
  fprintf(fdsse4,"compute_beta, %p,%p,%p,%p,framelength %d,F %d\n",
	  beta,m_11,m_10,alpha,frame_length,F);
557 558 559 560 561
#endif


  // termination for beta initialization

562
  //  fprintf(fdsse4,"beta init: offset8 %d\n",offset8_flag);
563
  m11=(int16_t)m_11[2+frame_length];
564 565
  //#ifndef __AVX2__
#if 1
566
  m10=(int16_t)m_10[2+frame_length];
567 568 569
#else
  m10=-(int16_t)m_10[2+frame_length];
#endif
570 571 572
#ifdef DEBUG_LOGMAP
  fprintf(fdsse4,"m11,m10 %d,%d\n",m11,m10);
#endif
573 574 575 576 577 578

  beta0 = -m11;//M0T_TERM;
  beta1 = m11;//M1T_TERM;
  m11=(int16_t)m_11[1+frame_length];
  m10=(int16_t)m_10[1+frame_length];

579 580 581
#ifdef DEBUG_LOGMAP
  fprintf(fdsse4,"m11,m10 %d,%d\n",m11,m10);
#endif
582 583 584 585 586 587 588

  beta0_2 = beta0-m11;//+M0T_TERM;
  beta1_2 = beta0+m11;//+M1T_TERM;
  beta2_2 = beta1+m10;//M2T_TERM;
  beta3_2 = beta1-m10;//+M3T_TERM;
  m11=(int16_t)m_11[frame_length];
  m10=(int16_t)m_10[frame_length];
589 590 591
#ifdef DEBUG_LOGMAP
  fprintf(fdsse4,"m11,m10 %d,%d\n",m11,m10);
#endif
592 593 594 595 596 597 598 599
  beta0_16 = beta0_2-m11;//+M0T_TERM;
  beta1_16 = beta0_2+m11;//+M1T_TERM;
  beta2_16 = beta1_2+m10;//+M2T_TERM;
  beta3_16 = beta1_2-m10;//+M3T_TERM;
  beta4_16 = beta2_2-m10;//+M4T_TERM;
  beta5_16 = beta2_2+m10;//+M5T_TERM;
  beta6_16 = beta3_2+m11;//+M6T_TERM;
  beta7_16 = beta3_2-m11;//+M7T_TERM;
600

601 602 603 604 605 606 607 608

  beta_m = (beta0_16>beta1_16) ? beta0_16 : beta1_16;
  beta_m = (beta_m>beta2_16) ? beta_m : beta2_16;
  beta_m = (beta_m>beta3_16) ? beta_m : beta3_16;
  beta_m = (beta_m>beta4_16) ? beta_m : beta4_16;
  beta_m = (beta_m>beta5_16) ? beta_m : beta5_16;
  beta_m = (beta_m>beta6_16) ? beta_m : beta6_16;
  beta_m = (beta_m>beta7_16) ? beta_m : beta7_16;
609

610 611 612 613 614 615 616 617 618 619

  beta0_16=beta0_16-beta_m;
  beta1_16=beta1_16-beta_m;
  beta2_16=beta2_16-beta_m;
  beta3_16=beta3_16-beta_m;
  beta4_16=beta4_16-beta_m;
  beta5_16=beta5_16-beta_m;
  beta6_16=beta6_16-beta_m;
  beta7_16=beta7_16-beta_m;

620
  for (rerun_flag=0;; rerun_flag=1) {
621
#if defined(__x86_64__) || defined(__i386__)
622 623
    beta_ptr   = (__m128i*)&beta[frame_length<<3];
    alpha128   = (__m128i*)&alpha[0];
624 625 626 627
#elif defined(__arm__)
    beta_ptr   = (int16x8_t*)&beta[frame_length<<3];
    alpha128   = (int16x8_t*)&alpha[0];
#endif
628 629 630 631 632 633 634 635 636
    if (rerun_flag == 0) {
      beta_ptr[0] = alpha128[(frame_length)];
      beta_ptr[1] = alpha128[1+(frame_length)];
      beta_ptr[2] = alpha128[2+(frame_length)];
      beta_ptr[3] = alpha128[3+(frame_length)];
      beta_ptr[4] = alpha128[4+(frame_length)];
      beta_ptr[5] = alpha128[5+(frame_length)];
      beta_ptr[6] = alpha128[6+(frame_length)];
      beta_ptr[7] = alpha128[7+(frame_length)];
637 638 639 640 641 642 643 644 645 646 647
#ifdef DEBUG_LOGMAP
      fprintf(fdsse4,"beta init \n");
      print_shorts("b0",(int16_t*)&beta_ptr[0]);
      print_shorts("b1",(int16_t*)&beta_ptr[1]);
      print_shorts("b2",(int16_t*)&beta_ptr[2]);
      print_shorts("b3",(int16_t*)&beta_ptr[3]);
      print_shorts("b4",(int16_t*)&beta_ptr[4]);
      print_shorts("b5",(int16_t*)&beta_ptr[5]);
      print_shorts("b6",(int16_t*)&beta_ptr[6]);
      print_shorts("b7",(int16_t*)&beta_ptr[7]);
#endif
648
    } else {
649
#if defined(__x86_64__) || defined(__i386__)
650 651 652 653 654 655 656 657 658
      beta128 = (__m128i*)&beta[0];
      beta_ptr[0] = _mm_srli_si128(beta128[0],2);
      beta_ptr[1] = _mm_srli_si128(beta128[1],2);
      beta_ptr[2] = _mm_srli_si128(beta128[2],2);
      beta_ptr[3] = _mm_srli_si128(beta128[3],2);
      beta_ptr[4] = _mm_srli_si128(beta128[4],2);
      beta_ptr[5] = _mm_srli_si128(beta128[5],2);
      beta_ptr[6] = _mm_srli_si128(beta128[6],2);
      beta_ptr[7] = _mm_srli_si128(beta128[7],2);
659 660 661 662 663 664 665 666 667 668 669
#elif defined(__arm__)
      beta128 = (int16x8_t*)&beta[0];
      beta_ptr   = (int16x8_t*)&beta[frame_length<<3];
      beta_ptr[0] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[0],16);   beta_ptr[0] = vsetq_lane_s16(beta[3],beta_ptr[0],4);
      beta_ptr[1] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[1],16);   beta_ptr[1] = vsetq_lane_s16(beta[11],beta_ptr[1],4);
      beta_ptr[2] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[2],16);   beta_ptr[2] = vsetq_lane_s16(beta[19],beta_ptr[2],4);
      beta_ptr[3] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[3],16);   beta_ptr[3] = vsetq_lane_s16(beta[27],beta_ptr[3],4);
      beta_ptr[4] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[4],16);   beta_ptr[4] = vsetq_lane_s16(beta[35],beta_ptr[4],4);
      beta_ptr[5] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[5],16);   beta_ptr[5] = vsetq_lane_s16(beta[43],beta_ptr[5],4);
      beta_ptr[6] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[6],16);   beta_ptr[6] = vsetq_lane_s16(beta[51],beta_ptr[6],4);
      beta_ptr[7] = (int16x8_t)vshrq_n_s64((int64x2_t)beta128[7],16);   beta_ptr[7] = vsetq_lane_s16(beta[59],beta_ptr[7],4);
670 671 672 673 674 675 676 677 678 679 680
#endif
#ifdef DEBUG_LOGMAP
      fprintf(fdsse4,"beta init (second run) \n");
      print_shorts("b0",(int16_t*)&beta_ptr[0]);
      print_shorts("b1",(int16_t*)&beta_ptr[1]);
      print_shorts("b2",(int16_t*)&beta_ptr[2]);
      print_shorts("b3",(int16_t*)&beta_ptr[3]);
      print_shorts("b4",(int16_t*)&beta_ptr[4]);
      print_shorts("b5",(int16_t*)&beta_ptr[5]);
      print_shorts("b6",(int16_t*)&beta_ptr[6]);
      print_shorts("b7",(int16_t*)&beta_ptr[7]);
681
#endif
682 683 684
    }


685
#if defined(__x86_64__) || defined(__i386__)
686 687 688 689 690 691 692 693
    beta_ptr[0] = _mm_insert_epi16(beta_ptr[0],beta0_16,7);
    beta_ptr[1] = _mm_insert_epi16(beta_ptr[1],beta1_16,7);
    beta_ptr[2] = _mm_insert_epi16(beta_ptr[2],beta2_16,7);
    beta_ptr[3] = _mm_insert_epi16(beta_ptr[3],beta3_16,7);
    beta_ptr[4] = _mm_insert_epi16(beta_ptr[4],beta4_16,7);
    beta_ptr[5] = _mm_insert_epi16(beta_ptr[5],beta5_16,7);
    beta_ptr[6] = _mm_insert_epi16(beta_ptr[6],beta6_16,7);
    beta_ptr[7] = _mm_insert_epi16(beta_ptr[7],beta7_16,7);
694 695 696 697 698 699 700 701 702 703
#elif defined(__arm__)
    beta_ptr[0] = vsetq_lane_s16(beta0_16,beta_ptr[0],7);
    beta_ptr[1] = vsetq_lane_s16(beta1_16,beta_ptr[1],7);
    beta_ptr[2] = vsetq_lane_s16(beta2_16,beta_ptr[2],7);
    beta_ptr[3] = vsetq_lane_s16(beta3_16,beta_ptr[3],7);
    beta_ptr[4] = vsetq_lane_s16(beta4_16,beta_ptr[4],7);
    beta_ptr[5] = vsetq_lane_s16(beta5_16,beta_ptr[5],7);
    beta_ptr[6] = vsetq_lane_s16(beta6_16,beta_ptr[6],7);
    beta_ptr[7] = vsetq_lane_s16(beta7_16,beta_ptr[7],7);
#endif
704

705 706 707 708 709 710 711 712 713 714 715
#ifdef DEBUG_LOGMAP
      fprintf(fdsse4,"beta init (after insert) \n");
      print_shorts("b0",(int16_t*)&beta_ptr[0]);
      print_shorts("b1",(int16_t*)&beta_ptr[1]);
      print_shorts("b2",(int16_t*)&beta_ptr[2]);
      print_shorts("b3",(int16_t*)&beta_ptr[3]);
      print_shorts("b4",(int16_t*)&beta_ptr[4]);
      print_shorts("b5",(int16_t*)&beta_ptr[5]);
      print_shorts("b6",(int16_t*)&beta_ptr[6]);
      print_shorts("b7",(int16_t*)&beta_ptr[7]);
#endif
716
    int loopval=((rerun_flag==0)?0:((frame_length-L)>>3));
717 718

    for (k=(frame_length>>3)-1; k>=loopval; k--) {
719
#if defined(__x86_64__) || defined(__i386__)
720
      m11_128=((__m128i*)m_11)[k];
721 722
      m10_128=((__m128i*)m_10)[k];

723 724 725

      //#ifndef __AVX2__
#if 1
726 727 728 729
      m_b0 = _mm_adds_epi16(beta_ptr[4],m11_128);  //m11
      m_b1 = _mm_subs_epi16(beta_ptr[4],m11_128);  //m00
      m_b2 = _mm_subs_epi16(beta_ptr[5],m10_128);  //m01
      m_b3 = _mm_adds_epi16(beta_ptr[5],m10_128);  //m10
730
      m_b4 = _mm_adds_epi16(beta_ptr[6],m10_128);  //m10
731 732 733
      m_b5 = _mm_subs_epi16(beta_ptr[6],m10_128);  //m01
      m_b6 = _mm_subs_epi16(beta_ptr[7],m11_128);  //m00
      m_b7 = _mm_adds_epi16(beta_ptr[7],m11_128);  //m11
734

735

736 737 738 739 740 741 742 743
      new0 = _mm_subs_epi16(beta_ptr[0],m11_128);  //m00
      new1 = _mm_adds_epi16(beta_ptr[0],m11_128);  //m11
      new2 = _mm_adds_epi16(beta_ptr[1],m10_128);  //m10
      new3 = _mm_subs_epi16(beta_ptr[1],m10_128);  //m01
      new4 = _mm_subs_epi16(beta_ptr[2],m10_128);  //m01
      new5 = _mm_adds_epi16(beta_ptr[2],m10_128);  //m10
      new6 = _mm_adds_epi16(beta_ptr[3],m11_128);  //m11
      new7 = _mm_subs_epi16(beta_ptr[3],m11_128);  //m00
744

745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
#else
      b01=_mm256_load_si256(&((_m256i*)beta_ptr)[0]);
      b23=_mm256_load_si256(&((_m256i*)beta_ptr)[1]);
      b45=_mm256_load_si256(&((_m256i*)beta_ptr)[2]);
      b67=_mm256_load_si256(&((_m256i*)beta_ptr)[3]);
      m11m10_256 = _mm256_insertf128_si256(m11m10_256,m11_128,0);
      m11m10_256 = _mm256_insertf128_si256(m11m10_256,m10_128,1);


      m_b02 = _mm256_adds_epi16(b45,m11m10_256); //negative m10
      m_b13 = _mm256_subs_epi16(b45,m11m10_256); //negative m10
      m_b64 = _mm256_subs_epi16(b67,m11m10_256); //negative m10
      m_b75 = _mm256_adds_epi16(b67,m11m10_256); //negative m10
      new02 = _mm256_subs_epi16(b01,m11m10_256);  //negative m10
      new13 = _mm256_adds_epi16(b01,m11m10_256);  //negative m10
      new64 = _mm256_adds_epi16(b23,m11m10_256);  //negative m10
      new75 = _mm256_subs_epi16(b24,m11m10_256);  //negative m10
#endif

764
      beta_ptr-=8;
765

766 767
      //#ifndef __AVX2__
#if 1
768 769 770 771 772 773 774 775
      beta_ptr[0] = _mm_max_epi16(m_b0,new0);
      beta_ptr[1] = _mm_max_epi16(m_b1,new1);
      beta_ptr[2] = _mm_max_epi16(m_b2,new2);
      beta_ptr[3] = _mm_max_epi16(m_b3,new3);
      beta_ptr[4] = _mm_max_epi16(m_b4,new4);
      beta_ptr[5] = _mm_max_epi16(m_b5,new5);
      beta_ptr[6] = _mm_max_epi16(m_b6,new6);
      beta_ptr[7] = _mm_max_epi16(m_b7,new7);
776

777 778 779 780 781 782 783 784 785 786 787 788 789 790
      beta_max = _mm_max_epi16(beta_ptr[0],beta_ptr[1]);
      beta_max = _mm_max_epi16(beta_max   ,beta_ptr[2]);
      beta_max = _mm_max_epi16(beta_max   ,beta_ptr[3]);
      beta_max = _mm_max_epi16(beta_max   ,beta_ptr[4]);
      beta_max = _mm_max_epi16(beta_max   ,beta_ptr[5]);
      beta_max = _mm_max_epi16(beta_max   ,beta_ptr[6]);
      beta_max = _mm_max_epi16(beta_max   ,beta_ptr[7]);

      beta_ptr[0] = _mm_subs_epi16(beta_ptr[0],beta_max);
      beta_ptr[1] = _mm_subs_epi16(beta_ptr[1],beta_max);
      beta_ptr[2] = _mm_subs_epi16(beta_ptr[2],beta_max);
      beta_ptr[3] = _mm_subs_epi16(beta_ptr[3],beta_max);
      beta_ptr[4] = _mm_subs_epi16(beta_ptr[4],beta_max);
      beta_ptr[5] = _mm_subs_epi16(beta_ptr[5],beta_max);
791
      beta_ptr[6] = _mm_subs_epi16(beta_ptr[6],beta_max);
792
      beta_ptr[7] = _mm_subs_epi16(beta_ptr[7],beta_max);
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#else
      b02   = _mm256_max_epi16(m_b02,new02);
      b13   = _mm256_max_epi16(m_b13,new13);
      b64   = _mm256_max_epi16(m_b64,new64);
      b75   = _mm256_max_epi16(m_b75,new75);
      
      beta_max = _mm256_max_epi16(b02,b13);
      beta_max = _mm256_max_epi16(beta_max,b64);
      beta_max = _mm256_max_epi16(beta_max,b75);
      beta_max = _mm256_max_epi16(beta_max,_mm256_permutevar8x32_epi32(betaa_max,_mm256_set_epi32(3,2,1,0,7,6,5,4)));

      b02   = _mm256_subs_epi16(b02,beta_max);
      b13   = _mm256_subs_epi16(b13,beta_max);
      b64   = _mm256_subs_epi16(b64,beta_max);
      b75   = _mm256_subs_epi16(b75,beta_max);

      ((_m256i*)beta_ptr)[0]) = _mm256_permute2x128_si256(b02,b13,0x02);  //b01
      ((_m256i*)beta_ptr)[1]) = _mm256_permute2x128_si256(b02,b13,0x31);  //b23
      ((_m256i*)beta_ptr)[2]) = _mm256_permute2x128_si256(b64,b75,0x13);  //b45
      ((_m256i*)beta_ptr)[3]) = _mm256_permute2x128_si256(b64,b75,0x20);  //b67
#endif

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#elif defined(__arm__)
      m11_128=((int16x8_t*)m_11)[k];
      m10_128=((int16x8_t*)m_10)[k];
      m_b0 = vqaddq_s16(beta_ptr[4],m11_128);  //m11
      m_b1 = vqsubq_s16(beta_ptr[4],m11_128);  //m00
      m_b2 = vqsubq_s16(beta_ptr[5],m10_128);  //m01
      m_b3 = vqaddq_s16(beta_ptr[5],m10_128);  //m10
      m_b4 = vqaddq_s16(beta_ptr[6],m10_128);  //m10
      m_b5 = vqsubq_s16(beta_ptr[6],m10_128);  //m01
      m_b6 = vqsubq_s16(beta_ptr[7],m11_128);  //m00
      m_b7 = vqaddq_s16(beta_ptr[7],m11_128);  //m11

      new0 = vqsubq_s16(beta_ptr[0],m11_128);  //m00
      new1 = vqaddq_s16(beta_ptr[0],m11_128);  //m11
      new2 = vqaddq_s16(beta_ptr[1],m10_128);  //m10
      new3 = vqsubq_s16(beta_ptr[1],m10_128);  //m01
      new4 = vqsubq_s16(beta_ptr[2],m10_128);  //m01
      new5 = vqaddq_s16(beta_ptr[2],m10_128);  //m10
      new6 = vqaddq_s16(beta_ptr[3],m11_128);  //m11
      new7 = vqsubq_s16(beta_ptr[3],m11_128);  //m00

      beta_ptr-=8;
837

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      beta_ptr[0] = vmaxq_s16(m_b0,new0);
      beta_ptr[1] = vmaxq_s16(m_b1,new1);
      beta_ptr[2] = vmaxq_s16(m_b2,new2);
      beta_ptr[3] = vmaxq_s16(m_b3,new3);
      beta_ptr[4] = vmaxq_s16(m_b4,new4);
      beta_ptr[5] = vmaxq_s16(m_b5,new5);
      beta_ptr[6] = vmaxq_s16(m_b6,new6);
      beta_ptr[7] = vmaxq_s16(m_b7,new7);

      beta_max = vmaxq_s16(beta_ptr[0],beta_ptr[1]);
      beta_max = vmaxq_s16(beta_max   ,beta_ptr[2]);
      beta_max = vmaxq_s16(beta_max   ,beta_ptr[3]);
      beta_max = vmaxq_s16(beta_max   ,beta_ptr[4]);
      beta_max = vmaxq_s16(beta_max   ,beta_ptr[5]);
      beta_max = vmaxq_s16(beta_max   ,beta_ptr[6]);
      beta_max = vmaxq_s16(beta_max   ,beta_ptr[7]);

      beta_ptr[0] = vqsubq_s16(beta_ptr[0],beta_max);
      beta_ptr[1] = vqsubq_s16(beta_ptr[1],beta_max);
      beta_ptr[2] = vqsubq_s16(beta_ptr[2],beta_max);
      beta_ptr[3] = vqsubq_s16(beta_ptr[3],beta_max);
      beta_ptr[4] = vqsubq_s16(beta_ptr[4],beta_max);
      beta_ptr[5] = vqsubq_s16(beta_ptr[5],beta_max);
      beta_ptr[6] = vqsubq_s16(beta_ptr[6],beta_max);
      beta_ptr[7] = vqsubq_s16(beta_ptr[7],beta_max);
#endif
864

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#ifdef DEBUG_LOGMAP
      fprintf(fdsse4,"Loop index %d, mb\n",k);
      fprintf(fdsse4,"beta init (after max)\n");
      print_shorts("b0",(int16_t*)&beta_ptr[0]);
      print_shorts("b1",(int16_t*)&beta_ptr[1]);
      print_shorts("b2",(int16_t*)&beta_ptr[2]);
      print_shorts("b3",(int16_t*)&beta_ptr[3]);
      print_shorts("b4",(int16_t*)&beta_ptr[4]);
      print_shorts("b5",(int16_t*)&beta_ptr[5]);
      print_shorts("b6",(int16_t*)&beta_ptr[6]);
      print_shorts("b7",(int16_t*)&beta_ptr[7]);
#endif
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    }

    if (rerun_flag==1)
      break;
  }
}

885 886
void compute_ext16(llr_t* alpha,llr_t* beta,llr_t* m_11,llr_t* m_10,llr_t* ext, llr_t* systematic,unsigned short frame_length)
{
887
#if defined(__x86_64__) || defined(__i386__)
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  __m128i *alpha128=(__m128i *)alpha;
  __m128i *beta128=(__m128i *)beta;
  __m128i *m11_128,*m10_128,*ext_128;
  __m128i *alpha_ptr,*beta_ptr;
  __m128i m00_1,m00_2,m00_3,m00_4;
  __m128i m01_1,m01_2,m01_3,m01_4;
  __m128i m10_1,m10_2,m10_3,m10_4;
  __m128i m11_1,m11_2,m11_3,m11_4;
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#elif defined(__arm__)
  int16x8_t *alpha128=(int16x8_t *)alpha;
  int16x8_t *beta128=(int16x8_t *)beta;
  int16x8_t *m11_128,*m10_128,*ext_128;
  int16x8_t *alpha_ptr,*beta_ptr;
  int16x8_t m00_1,m00_2,m00_3,m00_4;
  int16x8_t m01_1,m01_2,m01_3,m01_4;
  int16x8_t m10_1,m10_2,m10_3,m10_4;
  int16x8_t m11_1,m11_2,m11_3,m11_4;
#endif

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  int k;

  //
  // LLR computation, 8 consequtive bits per loop
  //

#ifdef DEBUG_LOGMAP
914
  fprintf(fdsse4,"compute_ext (sse_16bit), %p, %p, %p, %p, %p, %p ,framelength %d\n",alpha,beta,m_11,m_10,ext,systematic,frame_length);
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#endif

  alpha_ptr = alpha128;
  beta_ptr = &beta128[8];


921
  for (k=0; k<(frame_length>>3); k++) {
922

923
#if defined(__x86_64__) || defined(__i386__)
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    m11_128        = (__m128i*)&m_11[k<<3];
    m10_128        = (__m128i*)&m_10[k<<3];
    ext_128        = (__m128i*)&ext[k<<3];
927

928
    /*
929
      fprintf(fdsse4,"EXT %03d\n",k);
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      print_shorts("a0:",&alpha_ptr[0]);
      print_shorts("a1:",&alpha_ptr[1]);
      print_shorts("a2:",&alpha_ptr[2]);
      print_shorts("a3:",&alpha_ptr[3]);
      print_shorts("a4:",&alpha_ptr[4]);
      print_shorts("a5:",&alpha_ptr[5]);
      print_shorts("a6:",&alpha_ptr[6]);
      print_shorts("a7:",&alpha_ptr[7]);
      print_shorts("b0:",&beta_ptr[0]);
      print_shorts("b1:",&beta_ptr[1]);
      print_shorts("b2:",&beta_ptr[2]);
      print_shorts("b3:",&beta_ptr[3]);
      print_shorts("b4:",&beta_ptr[4]);
      print_shorts("b5:",&beta_ptr[5]);
      print_shorts("b6:",&beta_ptr[6]);
      print_shorts("b7:",&beta_ptr[7]);
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    */
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    //#ifndef __AVX2__
#if 1
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    m00_4 = _mm_adds_epi16(alpha_ptr[7],beta_ptr[3]); //ALPHA_BETA_4m00;
    m11_4 = _mm_adds_epi16(alpha_ptr[7],beta_ptr[7]); //ALPHA_BETA_4m11;
    m00_3 = _mm_adds_epi16(alpha_ptr[6],beta_ptr[7]); //ALPHA_BETA_3m00;
    m11_3 = _mm_adds_epi16(alpha_ptr[6],beta_ptr[3]); //ALPHA_BETA_3m11;
    m00_2 = _mm_adds_epi16(alpha_ptr[1],beta_ptr[4]); //ALPHA_BETA_2m00;
    m11_2 = _mm_adds_epi16(alpha_ptr[1],beta_ptr[0]); //ALPHA_BETA_2m11;
    m11_1 = _mm_adds_epi16(alpha_ptr[0],beta_ptr[4]); //ALPHA_BETA_1m11;
    m00_1 = _mm_adds_epi16(alpha_ptr[0],beta_ptr[0]); //ALPHA_BETA_1m00;
    m01_4 = _mm_adds_epi16(alpha_ptr[5],beta_ptr[6]); //ALPHA_BETA_4m01;
    m10_4 = _mm_adds_epi16(alpha_ptr[5],beta_ptr[2]); //ALPHA_BETA_4m10;
    m01_3 = _mm_adds_epi16(alpha_ptr[4],beta_ptr[2]); //ALPHA_BETA_3m01;
    m10_3 = _mm_adds_epi16(alpha_ptr[4],beta_ptr[6]); //ALPHA_BETA_3m10;
    m01_2 = _mm_adds_epi16(alpha_ptr[3],beta_ptr[1]); //ALPHA_BETA_2m01;
    m10_2 = _mm_adds_epi16(alpha_ptr[3],beta_ptr[5]); //ALPHA_BETA_2m10;
    m10_1 = _mm_adds_epi16(alpha_ptr[2],beta_ptr[1]); //ALPHA_BETA_1m10;
    m01_1 = _mm_adds_epi16(alpha_ptr[2],beta_ptr[5]); //ALPHA_BETA_1m01;
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#else


    m00_1 = _mm_adds_epi16(alpha_ptr[0],beta_ptr[0]); //ALPHA_BETA_1m00;
    m10_1 = _mm_adds_epi16(alpha_ptr[2],beta_ptr[1]); //ALPHA_BETA_1m10;
    m11_1 = _mm_adds_epi16(alpha_ptr[0],beta_ptr[4]); //ALPHA_BETA_1m11;
    m01_1 = _mm_adds_epi16(alpha_ptr[2],beta_ptr[5]); //ALPHA_BETA_1m01;

    m11_2 = _mm_adds_epi16(alpha_ptr[1],beta_ptr[0]); //ALPHA_BETA_2m11;
    m01_2 = _mm_adds_epi16(alpha_ptr[3],beta_ptr[1]); //ALPHA_BETA_2m01;
    m00_2 = _mm_adds_epi16(alpha_ptr[1],beta_ptr[4]); //ALPHA_BETA_2m00;
    m10_2 = _mm_adds_epi16(alpha_ptr[3],beta_ptr[5]); //ALPHA_BETA_2m10;

    m11_3 = _mm_adds_epi16(alpha_ptr[6],beta_ptr[3]); //ALPHA_BETA_3m11;
    m01_3 = _mm_adds_epi16(alpha_ptr[4],beta_ptr[2]); //ALPHA_BETA_3m01;
    m00_3 = _mm_adds_epi16(alpha_ptr[6],beta_ptr[7]); //ALPHA_BETA_3m00;
    m10_3 = _mm_adds_epi16(alpha_ptr[4],beta_ptr[6]); //ALPHA_BETA_3m10;

    m00_4 = _mm_adds_epi16(alpha_ptr[7],beta_ptr[3]); //ALPHA_BETA_4m00;
    m10_4 = _mm_adds_epi16(alpha_ptr[5],beta_ptr[2]); //ALPHA_BETA_4m10;
    m11_4 = _mm_adds_epi16(alpha_ptr[7],beta_ptr[7]); //ALPHA_BETA_4m11;
    m01_4 = _mm_adds_epi16(alpha_ptr[5],beta_ptr[6]); //ALPHA_BETA_4m01;


#endif

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    /*
      print_shorts("m11_1:",&m11_1);
      print_shorts("m11_2:",&m11_2);
      print_shorts("m11_3:",&m11_3);
      print_shorts("m11_4:",&m11_4);
      print_shorts("m00_1:",&m00_1);
      print_shorts("m00_2:",&m00_2);
      print_shorts("m00_3:",&m00_3);
      print_shorts("m00_4:",&m00_4);
      print_shorts("m10_1:",&m10_1);
      print_shorts("m10_2:",&m10_2);
      print_shorts("m10_3:",&m10_3);
      print_shorts("m10_4:",&m10_4);
      print_shorts("m01_1:",&m01_1);
      print_shorts("m01_2:",&m01_2);
      print_shorts("m01_3:",&m01_3);
      print_shorts("m01_4:",&m01_4);
    */
    m01_1 = _mm_max_epi16(m01_1,m01_2);
    m01_1 = _mm_max_epi16(m01_1,m01_3);
    m01_1 = _mm_max_epi16(m01_1,m01_4);
    m00_1 = _mm_max_epi16(m00_1,m00_2);
    m00_1 = _mm_max_epi16(m00_1,m00_3);
    m00_1 = _mm_max_epi16(m00_1,m00_4);
    m10_1 = _mm_max_epi16(m10_1,m10_2);
    m10_1 = _mm_max_epi16(m10_1,m10_3);
    m10_1 = _mm_max_epi16(m10_1,m10_4);
    m11_1 = _mm_max_epi16(m11_1,m11_2);
    m11_1 = _mm_max_epi16(m11_1,m11_3);
    m11_1 = _mm_max_epi16(m11_1,m11_4);

    //      print_shorts("m11_1:",&m11_1);
1024

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    m01_1 = _mm_subs_epi16(m01_1,*m10_128);
    m00_1 = _mm_subs_epi16(m00_1,*m11_128);
    m10_1 = _mm_adds_epi16(m10_1,*m10_128);
    m11_1 = _mm_adds_epi16(m11_1,*m11_128);

    //      print_shorts("m10_1:",&m10_1);
    //      print_shorts("m11_1:",&m11_1);
    m01_1 = _mm_max_epi16(m01_1,m00_1);
    m10_1 = _mm_max_epi16(m10_1,m11_1);
    //      print_shorts("m01_1:",&m01_1);
    //      print_shorts("m10_1:",&m10_1);

    *ext_128 = _mm_subs_epi16(m10_1,m01_1);
1038 1039 1040 1041 1042 1043 1044 1045
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"ext %p\n",ext_128);
    print_shorts("ext:",(int16_t*)ext_128);
    print_shorts("m11:",(int16_t*)m11_128);
    print_shorts("m10:",(int16_t*)m10_128);
    print_shorts("m10_1:",(int16_t*)&m10_1);
    print_shorts("m01_1:",(int16_t*)&m01_1);
#endif
1046

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#elif defined(__arm__)
    m11_128        = (int16x8_t*)&m_11[k<<3];
    m10_128        = (int16x8_t*)&m_10[k<<3];
    ext_128        = (int16x8_t*)&ext[k<<3];

    m00_4 = vqaddq_s16(alpha_ptr[7],beta_ptr[3]); //ALPHA_BETA_4m00;
    m11_4 = vqaddq_s16(alpha_ptr[7],beta_ptr[7]); //ALPHA_BETA_4m11;
    m00_3 = vqaddq_s16(alpha_ptr[6],beta_ptr[7]); //ALPHA_BETA_3m00;
    m11_3 = vqaddq_s16(alpha_ptr[6],beta_ptr[3]); //ALPHA_BETA_3m11;
    m00_2 = vqaddq_s16(alpha_ptr[1],beta_ptr[4]); //ALPHA_BETA_2m00;
    m11_2 = vqaddq_s16(alpha_ptr[1],beta_ptr[0]); //ALPHA_BETA_2m11;
    m11_1 = vqaddq_s16(alpha_ptr[0],beta_ptr[4]); //ALPHA_BETA_1m11;
    m00_1 = vqaddq_s16(alpha_ptr[0],beta_ptr[0]); //ALPHA_BETA_1m00;
    m01_4 = vqaddq_s16(alpha_ptr[5],beta_ptr[6]); //ALPHA_BETA_4m01;
    m10_4 = vqaddq_s16(alpha_ptr[5],beta_ptr[2]); //ALPHA_BETA_4m10;
    m01_3 = vqaddq_s16(alpha_ptr[4],beta_ptr[2]); //ALPHA_BETA_3m01;
    m10_3 = vqaddq_s16(alpha_ptr[4],beta_ptr[6]); //ALPHA_BETA_3m10;
    m01_2 = vqaddq_s16(alpha_ptr[3],beta_ptr[1]); //ALPHA_BETA_2m01;
    m10_2 = vqaddq_s16(alpha_ptr[3],beta_ptr[5]); //ALPHA_BETA_2m10;
    m10_1 = vqaddq_s16(alpha_ptr[2],beta_ptr[1]); //ALPHA_BETA_1m10;
    m01_1 = vqaddq_s16(alpha_ptr[2],beta_ptr[5]); //ALPHA_BETA_1m01;

    m01_1 = vmaxq_s16(m01_1,m01_2);
    m01_1 = vmaxq_s16(m01_1,m01_3);
    m01_1 = vmaxq_s16(m01_1,m01_4);
    m00_1 = vmaxq_s16(m00_1,m00_2);
    m00_1 = vmaxq_s16(m00_1,m00_3);
    m00_1 = vmaxq_s16(m00_1,m00_4);
    m10_1 = vmaxq_s16(m10_1,m10_2);
    m10_1 = vmaxq_s16(m10_1,m10_3);
    m10_1 = vmaxq_s16(m10_1,m10_4);
    m11_1 = vmaxq_s16(m11_1,m11_2);
    m11_1 = vmaxq_s16(m11_1,m11_3);
    m11_1 = vmaxq_s16(m11_1,m11_4);


    m01_1 = vqsubq_s16(m01_1,*m10_128);
    m00_1 = vqsubq_s16(m00_1,*m11_128);
    m10_1 = vqaddq_s16(m10_1,*m10_128);
    m11_1 = vqaddq_s16(m11_1,*m11_128);


    m01_1 = vmaxq_s16(m01_1,m00_1);
    m10_1 = vmaxq_s16(m10_1,m11_1);


    *ext_128 = vqsubq_s16(m10_1,m01_1);
#endif
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    alpha_ptr+=8;
    beta_ptr+=8;
  }
}



//int pi2[n],pi3[n+8],pi5[n+8],pi4[n+8],pi6[n+8],
int *pi2tab16[188],*pi5tab16[188],*pi4tab16[188],*pi6tab16[188];

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void free_td16(void)
{
  int ind;

  for (ind=0; ind<188; ind++) {
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    free_and_zero(pi2tab16[ind]);
    free_and_zero(pi5tab16[ind]);
    free_and_zero(pi4tab16[ind]);
    free_and_zero(pi6tab16[ind]);
1114
  }
1115 1116
}

1117
void init_td16(void)
1118
{
1119 1120 1121 1122

  int ind,i,i2,i3,j,n,pi,pi3;
  short * base_interleaver;

1123
  for (ind=0; ind<188; ind++) {
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139

    n = f1f2mat[ind].nb_bits;
    base_interleaver=il_tb+f1f2mat[ind].beg_index;
#ifdef MEX
    // This is needed for the Mex implementation to make the memory persistent
    pi2tab16[ind] = mxMalloc((n+8)*sizeof(int));
    pi5tab16[ind] = mxMalloc((n+8)*sizeof(int));
    pi4tab16[ind] = mxMalloc((n+8)*sizeof(int));
    pi6tab16[ind] = mxMalloc((n+8)*sizeof(int));
#else
    pi2tab16[ind] = malloc((n+8)*sizeof(int));
    pi5tab16[ind] = malloc((n+8)*sizeof(int));
    pi4tab16[ind] = malloc((n+8)*sizeof(int));
    pi6tab16[ind] = malloc((n+8)*sizeof(int));
#endif

1140
    for (i=i2=0; i2<8; i2++) {
1141
      j=i2;
1142 1143 1144 1145 1146 1147 1148

      for (i3=0; i3<(n>>3); i3++,i++,j+=8) {

        //    if (j>=n)
        //      j-=(n-1);

        pi2tab16[ind][i]  = j;
1149
        //    fprintf(fdsse4,"pi2[%d] = %d\n",i,j);
1150 1151
      }
    }
1152 1153

    for (i=0; i<n; i++) {
1154 1155 1156 1157 1158
      pi = base_interleaver[i];//(unsigned int)threegpplte_interleaver(f1,f2,n);
      pi3 = pi2tab16[ind][pi];
      pi4tab16[ind][pi2tab16[ind][i]] = pi3;
      pi5tab16[ind][pi3] = pi2tab16[ind][i];
      pi6tab16[ind][pi] = pi2tab16[ind][i];
1159
    }
1160 1161 1162 1163

  }
}

1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178
uint8_t phy_threegpplte_turbo_decoder16(int16_t *y,
                               int16_t *y2,
                               uint8_t *decoded_bytes,
                               uint8_t *decoded_bytes2,
                               uint16_t n,
                               uint8_t max_iterations,
                               uint8_t crc_type,
                               uint8_t F,
                               time_stats_t *init_stats,
                               time_stats_t *alpha_stats,
                               time_stats_t *beta_stats,
                               time_stats_t *gamma_stats,
                               time_stats_t *ext_stats,
                               time_stats_t *intl1_stats,
                               time_stats_t *intl2_stats) {
1179

1180 1181 1182 1183 1184
  /*  y is a pointer to the input
      decoded_bytes is a pointer to the decoded output
      n is the size in bits of the coded block, with the tail */


1185 1186 1187 1188 1189
  llr_t systematic0[n+16] __attribute__ ((aligned(32)));
  llr_t systematic1[n+16] __attribute__ ((aligned(32)));
  llr_t systematic2[n+16] __attribute__ ((aligned(32)));
  llr_t yparity1[n+16] __attribute__ ((aligned(32)));
  llr_t yparity2[n+16] __attribute__ ((aligned(32)));
1190

1191 1192
  llr_t ext[n+128] __attribute__((aligned(32)));
  llr_t ext2[n+128] __attribute__((aligned(32)));
1193

1194 1195 1196 1197
  llr_t alpha[(n+16)*8] __attribute__ ((aligned(32)));
  llr_t beta[(n+16)*8] __attribute__ ((aligned(32)));
  llr_t m11[n+32] __attribute__ ((aligned(32)));
  llr_t m10[n+32] __attribute__ ((aligned(32)));
1198

1199

1200 1201 1202 1203 1204
  int *pi2_p,*pi4_p,*pi5_p,*pi6_p;
  llr_t *s,*s1,*s2,*yp1,*yp2,*yp;
  unsigned int i,j,iind;//,pi;
  unsigned char iteration_cnt=0;
  unsigned int crc,oldcrc,crc_len;
1205
  uint8_t temp;
1206

1207 1208
#if defined(__x86_64__) || defined(__i386__)
  __m128i *yp128;
1209
  __m128i tmp, zeros=_mm_setzero_si128();
1210
  __m128i tmpe;
1211 1212 1213 1214 1215 1216 1217 1218
#elif defined(__arm__)
  int16x8_t *yp128;
//  int16x8_t tmp128[(n+8)>>3];
  int16x8_t tmp, zeros=vdupq_n_s16(0);
  const uint16_t __attribute__ ((aligned (16))) _Powers[8]= 
    { 1, 2, 4, 8, 16, 32, 64, 128};
  uint16x8_t Powers= vld1q_u16(_Powers);
#endif
1219 1220
  int offset8_flag=0;

1221 1222 1223 1224 1225 1226 1227
#ifdef DEBUG_LOGMAP
  fdsse4 = fopen("dump_sse4.txt","w");


  printf("tc sse4_16 (y) %p\n",y);
#endif

1228
  if (crc_type > 3) {
1229
    printf("Illegal crc length!\n");
1230 1231 1232 1233
    return 255;
  }


1234

1235 1236 1237 1238
  start_meas(init_stats);



1239
  for (iind=0; iind < 188 && f1f2mat[iind].nb_bits != n; iind++);
1240

1241
  if ( iind == 188 ) {
1242
    printf("Illegal frame length!\n");
1243 1244
    return 255;
  }
1245

1246 1247 1248 1249 1250
  switch (crc_type) {
  case CRC24_A:
  case CRC24_B:
    crc_len=3;
    break;
1251

1252 1253 1254
  case CRC16:
    crc_len=2;
    break;
1255

1256 1257 1258 1259
  case CRC8:
    crc_len=1;
    break;

1260 1261 1262 1263
  default:
    crc_len=3;
  }

1264
#if defined(__x86_64__) || defined(__i386__)
1265
  yp128 = (__m128i*)y;
1266 1267 1268
#elif defined(__arm__)
  yp128 = (int16x8_t*)y;
#endif
1269 1270 1271



1272 1273

  s = systematic0;
1274 1275 1276 1277 1278 1279 1280
  s1 = systematic1;
  s2 = systematic2;
  yp1 = yparity1;
  yp2 = yparity2;



1281
  for (i=0; i<n; i+=8) {
1282
    pi2_p = &pi2tab16[iind][i];
1283

1284 1285
    j=pi2_p[0];

1286
#if defined(__x86_64__) || defined(__i386__)
1287
    tmpe = _mm_load_si128(yp128);
1288 1289
    //    fprintf(fdsse4,"yp128 %p\n",yp128);
    //    print_shorts("tmpe",(int16_t *)&tmpe);
1290

1291 1292
    s[j]   = _mm_extract_epi16(tmpe,0);
    yp1[j] = _mm_extract_epi16(tmpe,1);
1293
    yp2[j] = _mm_extract_epi16(tmpe,2);
1294 1295 1296
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init0: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1297 1298
    j=pi2_p[1];

1299 1300
    s[j]   = _mm_extract_epi16(tmpe,3);
    yp1[j] = _mm_extract_epi16(tmpe,4);
1301
    yp2[j] = _mm_extract_epi16(tmpe,5);
1302 1303 1304
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init1: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1305 1306
    j=pi2_p[2];

1307 1308
    s[j]   = _mm_extract_epi16(tmpe,6);
    yp1[j] = _mm_extract_epi16(tmpe,7);
1309 1310
    tmpe = _mm_load_si128(&yp128[1]);
    yp2[j] = _mm_extract_epi16(tmpe,0);
1311 1312 1313
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init2: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1314 1315
    j=pi2_p[3];

1316 1317
    s[j]   = _mm_extract_epi16(tmpe,1);
    yp1[j] = _mm_extract_epi16(tmpe,2);
1318
    yp2[j] = _mm_extract_epi16(tmpe,3);
1319 1320 1321
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init3: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1322 1323
    j=pi2_p[4];

1324 1325
    s[j]   = _mm_extract_epi16(tmpe,4);
    yp1[j] = _mm_extract_epi16(tmpe,5);
1326
    yp2[j] = _mm_extract_epi16(tmpe,6);
1327 1328 1329
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init4: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1330 1331
    j=pi2_p[5];

1332
    s[j]   = _mm_extract_epi16(tmpe,7);
1333
    tmpe = _mm_load_si128(&yp128[2]);
1334
    yp1[j] = _mm_extract_epi16(tmpe,0);
1335
    yp2[j] = _mm_extract_epi16(tmpe,1);
1336 1337 1338
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init5: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1339

1340 1341
    j=pi2_p[6];

1342 1343
    s[j]   = _mm_extract_epi16(tmpe,2);
    yp1[j] = _mm_extract_epi16(tmpe,3);
1344
    yp2[j] = _mm_extract_epi16(tmpe,4);
1345 1346 1347
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init6: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1348 1349
    j=pi2_p[7];

1350 1351
    s[j]   = _mm_extract_epi16(tmpe,5);
    yp1[j] = _mm_extract_epi16(tmpe,6);
1352
    yp2[j] = _mm_extract_epi16(tmpe,7);
1353 1354 1355
#ifdef DEBUG_LOGMAP
    fprintf(fdsse4,"init7: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",j,s[j],yp1[j],yp2[j]);
#endif
1356

1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396
#elif defined(__arm__)
    s[j]   = vgetq_lane_s16(yp128[0],0);
    yp1[j] = vgetq_lane_s16(yp128[0],1);
    yp2[j] = vgetq_lane_s16(yp128[0],2);

    j=pi2_p[1];
    s[j]   = vgetq_lane_s16(yp128[0],3);
    yp1[j] = vgetq_lane_s16(yp128[0],4);
    yp2[j] = vgetq_lane_s16(yp128[0],5);

    j=pi2_p[2];
    s[j]   = vgetq_lane_s16(yp128[0],6);
    yp1[j] = vgetq_lane_s16(yp128[0],7);
    yp2[j] = vgetq_lane_s16(yp128[1],0);

    j=pi2_p[3];
    s[j]   = vgetq_lane_s16(yp128[1],1);
    yp1[j] = vgetq_lane_s16(yp128[1],2);
    yp2[j] = vgetq_lane_s16(yp128[1],3);

    j=pi2_p[4];
    s[j]   = vgetq_lane_s16(yp128[1],4);
    yp1[j] = vgetq_lane_s16(yp128[1],5);
    yp2[j] = vgetq_lane_s16(yp128[1],6);

    j=pi2_p[5];
    s[j]   = vgetq_lane_s16(yp128[1],7);
    yp1[j] = vgetq_lane_s16(yp128[2],0);
    yp2[j] = vgetq_lane_s16(yp128[2],1);

    j=pi2_p[6];
    s[j]   = vgetq_lane_s16(yp128[2],2);
    yp1[j] = vgetq_lane_s16(yp128[2],3);
    yp2[j] = vgetq_lane_s16(yp128[2],4);

    j=pi2_p[7];
    s[j]   = vgetq_lane_s16(yp128[2],5);
    yp1[j] = vgetq_lane_s16(yp128[2],6);
    yp2[j] = vgetq_lane_s16(yp128[2],7);
#endif
1397 1398 1399 1400 1401 1402 1403 1404
    yp128+=3;

  }

  yp=(llr_t*)yp128;


  // Termination
1405 1406 1407 1408 1409 1410 1411
  for (i=n; i<n+3; i++) {
    s[i]= *yp;
    s1[i] = s[i] ;
    s2[i] = s[i];
    yp++;
    yp1[i] = *yp;
    yp++;
1412
#ifdef DEBUG_LOGMAP
1413
    fprintf(fdsse4,"Term 1 (%d): %d %d\n",i,s[i],yp1[i]);
1414 1415 1416
#endif //DEBUG_LOGMAP
  }

1417 1418 1419 1420 1421 1422 1423
  for (i=n+8; i<n+11; i++) {
    s[i]= *yp;
    s1[i] = s[i] ;
    s2[i] = s[i];
    yp++;
    yp2[i-8] = *yp;
    yp++;
1424
#ifdef DEBUG_LOGMAP
1425
    fprintf(fdsse4,"Term 2 (%d): %d %d\n",i-3,s[i],yp2[i-8]);
1426 1427 1428 1429
#endif //DEBUG_LOGMAP
  }

#ifdef DEBUG_LOGMAP
1430
  fprintf(fdsse4,"\n");
1431
#endif //DEBUG_LOGMAP
1432

1433 1434 1435 1436 1437 1438 1439
  stop_meas(init_stats);

  // do log_map from first parity bit

  log_map16(systematic0,yparity1,m11,m10,alpha,beta,ext,n,0,F,offset8_flag,alpha_stats,beta_stats,gamma_stats,ext_stats);

  while (iteration_cnt++ < max_iterations) {
1440

1441
#ifdef DEBUG_LOGMAP
1442
    fprintf(fdsse4,"\n*******************ITERATION %d (n %d), ext %p\n\n",iteration_cnt,n,ext);
1443
#endif //DEBUG_LOGMAP
1444

1445
    start_meas(intl1_stats);
1446

1447
    pi4_p=pi4tab16[iind];
1448 1449

    for (i=0; i<(n>>3); i++) { // steady-state portion
1450

1451
#if defined(__x86_64__) || defined(__i386__)