3gpplte_turbo_decoder_avx2_16bit.c 49.2 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)
   date: 21.10.2009

   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!

   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
*/

///
///

#ifdef __AVX2__

#include "PHY/sse_intrin.h"

#ifndef TEST_DEBUG
#include "PHY/defs.h"
#include "PHY/CODING/defs.h"
#include "PHY/CODING/lte_interleaver_inline.h"
#include "extern_3GPPinterleaver.h"
#else

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

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


//#define DEBUG_LOGMAP

#ifdef DEBUG_LOGMAP
#define print_shorts(s,x) fprintf(fdavx2,"%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]);fprintf(fdavx2b,"%s %d,%d,%d,%d,%d,%d,%d,%d\n",s,(x)[8],(x)[9],(x)[10],(x)[11],(x)[12],(x)[13],(x)[14],(x)[15])
FILE *fdavx2,*fdavx2b;
#else

#endif


#define print_bytes(s,x) printf("%s %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%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],(x)[8],(x)[9],(x)[10],(x)[11],(x)[12],(x)[13],(x)[14],(x)[15],(x)[16],(x)[17],(x)[18],(x)[19],(x)[20],(x)[21],(x)[22],(x)[23],(x)[24],(x)[25],(x)[26],(x)[27],(x)[28],(x)[29],(x)[30],(x)[31])




typedef int16_t llr_t; // internal decoder LLR data is 16-bit fixed
typedef int16_t channel_t;
#define MAX 256

void log_map16avx2(llr_t* systematic,channel_t* y_parity, llr_t* m11, llr_t* m10, llr_t *alpha, llr_t *beta, llr_t* ext,uint16_t 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);
void compute_gamma16avx2(llr_t* m11,llr_t* m10,llr_t* systematic, channel_t* y_parity, uint16_t frame_length,unsigned char term_flag);
void compute_alpha16avx2(llr_t*alpha,llr_t *beta, llr_t* m11,llr_t* m10, uint16_t frame_length,unsigned char F);
void compute_beta16avx2(llr_t*alpha, llr_t* beta,llr_t* m11,llr_t* m10, uint16_t frame_length,unsigned char F,int offset8_flag);
void compute_ext16avx2(llr_t* alpha,llr_t* beta,llr_t* m11,llr_t* m10,llr_t* extrinsic, llr_t* ap, uint16_t frame_length);


void log_map16avx2(llr_t* systematic,
		   channel_t* y_parity,
		   llr_t* m11,
		   llr_t* m10,
		   llr_t *alpha,
		   llr_t *beta,
		   llr_t* ext,
		   uint16_t 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)
{

#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"log_map (avx2_16bit), frame_length %d\n",frame_length);
  fprintf(fdavx2b,"log_map (avx2_16bit), frame_length %d\n",frame_length);
#endif

  start_meas(gamma_stats) ;
  compute_gamma16avx2(m11,m10,systematic,y_parity,frame_length,term_flag) ;
  stop_meas(gamma_stats);
  start_meas(alpha_stats) ;
  compute_alpha16avx2(alpha,beta,m11,m10,frame_length,F)                  ;
  stop_meas(alpha_stats);
  start_meas(beta_stats)  ;
  compute_beta16avx2(alpha,beta,m11,m10,frame_length,F,offset8_flag)      ;
  stop_meas(beta_stats);
  start_meas(ext_stats)   ;
  compute_ext16avx2(alpha,beta,m11,m10,ext,systematic,frame_length)       ;
  stop_meas(ext_stats);


}

void compute_gamma16avx2(llr_t* m11,llr_t* m10,llr_t* systematic,channel_t* y_parity,
                     uint16_t frame_length,unsigned char term_flag)
{
  int k,K1;

  __m256i *systematic128 = (__m256i *)systematic;
  __m256i *y_parity128   = (__m256i *)y_parity;
  __m256i *m10_128        = (__m256i *)m10;
  __m256i *m11_128        = (__m256i *)m11;

#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"compute_gamma (avx2_16bit), %p,%p,%p,%p,framelength %d\n",m11,m10,systematic,y_parity,frame_length);
  fprintf(fdavx2b,"compute_gamma (avx2_16bit), %p,%p,%p,%p,framelength %d\n",m11,m10,systematic,y_parity,frame_length);
#endif

  K1=frame_length>>3;

  for (k=0; k<K1; k++) {
    m11_128[k] = _mm256_srai_epi16(_mm256_adds_epi16(systematic128[k],y_parity128[k]),1);
    m10_128[k] = _mm256_srai_epi16(_mm256_subs_epi16(systematic128[k],y_parity128[k]),1);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"Loop index k %d\n",k);
    fprintf(fdavx2b,"Loop index k %d\n",k);
    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
  }

  // Termination
  m11_128[k] = _mm256_srai_epi16(_mm256_adds_epi16(systematic128[k+term_flag],y_parity128[k]),1);
  m10_128[k] = _mm256_srai_epi16(_mm256_subs_epi16(systematic128[k+term_flag],y_parity128[k]),1);

#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"Loop index k %d (term flag %d)\n",k,term_flag);
  fprintf(fdavx2b,"Loop index k %d (term flag %d)\n",k,term_flag);
  print_shorts("sys",(int16_t*)&systematic128[k+term_flag]);
  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
}

#define L 40

void compute_alpha16avx2(llr_t* alpha,llr_t* beta,llr_t* m_11,llr_t* m_10,uint16_t frame_length,unsigned char F)
{
  int k,l,l2,K1,rerun_flag=0;

  __m256i *alpha128=(__m256i *)alpha,*alpha_ptr;
  __m256i a0,a1,a2,a3,a4,a5,a6,a7,*m11p,*m10p;
  __m256i m_b0,m_b1,m_b2,m_b3,m_b4,m_b5,m_b6,m_b7;
  __m256i new0,new1,new2,new3,new4,new5,new6,new7;
  __m256i alpha_max;

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  unsigned long long timein,timeout;

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  l2 = L>>3;
  K1 = (frame_length>>3);
#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"Compute alpha (avx2_16bit)\n");
  fprintf(fdavx2b,"Compute alpha (avx2_16bit)\n");
#endif
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  timein = rdtsc_oai();

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  for (l=K1;; l=l2,rerun_flag=1) {
    alpha128 = (__m256i *)alpha;

    if (rerun_flag == 0) {

      alpha128[0] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,0,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,0);
      alpha128[1] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[2] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[3] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[4] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[5] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[6] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
      alpha128[7] = _mm256_set_epi16(-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2,-MAX/2);
#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"Initial alpha\n");
      fprintf(fdavx2b,"Initial alpha\n");
      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
    } else {
      //set initial alpha in columns 1-7 from final alpha from last run in columns 0-6
      alpha128[0] = _mm256_slli_si256(alpha128[frame_length],2);
      alpha128[1] = _mm256_slli_si256(alpha128[1+frame_length],2);
      alpha128[2] = _mm256_slli_si256(alpha128[2+frame_length],2);
      alpha128[3] = _mm256_slli_si256(alpha128[3+frame_length],2);
      alpha128[4] = _mm256_slli_si256(alpha128[4+frame_length],2);
      alpha128[5] = _mm256_slli_si256(alpha128[5+frame_length],2);
      alpha128[6] = _mm256_slli_si256(alpha128[6+frame_length],2);
      alpha128[7] = _mm256_slli_si256(alpha128[7+frame_length],2);
      // set initial alpha in column 0 to (0,-MAX/2,...,-MAX/2)
      alpha[16] = -MAX/2;
      alpha[32] = -MAX/2;
      alpha[48] = -MAX/2;
      alpha[64] = -MAX/2;
      alpha[80] = -MAX/2;
      alpha[96] = -MAX/2;
      alpha[112] = -MAX/2;

      alpha[24] = -MAX/2;
      alpha[40] = -MAX/2;
      alpha[56] = -MAX/2;
      alpha[72] = -MAX/2;
      alpha[88] = -MAX/2;
      alpha[104] = -MAX/2;
      alpha[120] = -MAX/2;
#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"Second run\n");
      fprintf(fdavx2b,"Second run\n");
      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

    }

    alpha_ptr = &alpha128[0];
    m11p = (__m256i*)m_11;
    m10p = (__m256i*)m_10;

    for (k=0;
         k<l;
         k++) {


      a1=_mm256_load_si256(&alpha_ptr[1]);
      a3=_mm256_load_si256(&alpha_ptr[3]);
      a5=_mm256_load_si256(&alpha_ptr[5]);
      a7=_mm256_load_si256(&alpha_ptr[7]);

      m_b0 = _mm256_adds_epi16(a1,*m11p);  // m11
      m_b4 = _mm256_subs_epi16(a1,*m11p);  // m00=-m11
      m_b1 = _mm256_subs_epi16(a3,*m10p);  // m01=-m10
      m_b5 = _mm256_adds_epi16(a3,*m10p);  // m10
      m_b2 = _mm256_adds_epi16(a5,*m10p);  // m10
      m_b6 = _mm256_subs_epi16(a5,*m10p);  // m01=-m10
      m_b3 = _mm256_subs_epi16(a7,*m11p);  // m00=-m11
      m_b7 = _mm256_adds_epi16(a7,*m11p);  // m11

      a0=_mm256_load_si256(&alpha_ptr[0]);
      a2=_mm256_load_si256(&alpha_ptr[2]);
      a4=_mm256_load_si256(&alpha_ptr[4]);
      a6=_mm256_load_si256(&alpha_ptr[6]);

      new0 = _mm256_subs_epi16(a0,*m11p);  // m00=-m11
      new4 = _mm256_adds_epi16(a0,*m11p);  // m11
      new1 = _mm256_adds_epi16(a2,*m10p);  // m10
      new5 = _mm256_subs_epi16(a2,*m10p);  // m01=-m10
      new2 = _mm256_subs_epi16(a4,*m10p);  // m01=-m10
      new6 = _mm256_adds_epi16(a4,*m10p);  // m10
      new3 = _mm256_adds_epi16(a6,*m11p);  // m11
      new7 = _mm256_subs_epi16(a6,*m11p);  // m00=-m11

      a0 = _mm256_max_epi16(m_b0,new0);
      a1 = _mm256_max_epi16(m_b1,new1);
      a2 = _mm256_max_epi16(m_b2,new2);
      a3 = _mm256_max_epi16(m_b3,new3);
      a4 = _mm256_max_epi16(m_b4,new4);
      a5 = _mm256_max_epi16(m_b5,new5);
      a6 = _mm256_max_epi16(m_b6,new6);
      a7 = _mm256_max_epi16(m_b7,new7);

      alpha_max = _mm256_max_epi16(a0,a1);
      alpha_max = _mm256_max_epi16(alpha_max,a2);
      alpha_max = _mm256_max_epi16(alpha_max,a3);
      alpha_max = _mm256_max_epi16(alpha_max,a4);
      alpha_max = _mm256_max_epi16(alpha_max,a5);
      alpha_max = _mm256_max_epi16(alpha_max,a6);
      alpha_max = _mm256_max_epi16(alpha_max,a7);

      alpha_ptr+=8;
      m11p++;
      m10p++;

      alpha_ptr[0] = _mm256_subs_epi16(a0,alpha_max);
      alpha_ptr[1] = _mm256_subs_epi16(a1,alpha_max);
      alpha_ptr[2] = _mm256_subs_epi16(a2,alpha_max);
      alpha_ptr[3] = _mm256_subs_epi16(a3,alpha_max);
      alpha_ptr[4] = _mm256_subs_epi16(a4,alpha_max);
      alpha_ptr[5] = _mm256_subs_epi16(a5,alpha_max);
      alpha_ptr[6] = _mm256_subs_epi16(a6,alpha_max);
      alpha_ptr[7] = _mm256_subs_epi16(a7,alpha_max);

#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"Loop index %d\n",k);
      fprintf(fdavx2b,"Loop index %d\n",k);
      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);

      fprintf(fdavx2,"Loop index %d, new\n",k);
      fprintf(fdavx2b,"Loop index %d, new\n",k);
      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);

      fprintf(fdavx2,"Loop index %d, after max\n",k);
      fprintf(fdavx2b,"Loop index %d, after max\n",k);
      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);

      fprintf(fdavx2,"Loop index %d\n",k);
      fprintf(fdavx2b,"Loop index %d\n",k);
      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

    }

    if (rerun_flag==1)
      break;
  }
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  timeout = rdtsc_oai();
  printf("alpha: inner loop time %llu\n",timeout-timein);

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}


void compute_beta16avx2(llr_t* alpha,llr_t* beta,llr_t *m_11,llr_t* m_10,uint16_t frame_length,unsigned char F,int offset8_flag)
{

  int k,rerun_flag=0;

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  __m256i *m11p,*m10p;
  register __m256i b0,b1,b2,b3,b4,b5,b6,b7;
  register __m256i m_b0,m_b1,m_b2,m_b3,m_b4,m_b5,m_b6,m_b7;
  register __m256i new0,new1,new2,new3,new4,new5,new6,new7;
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  __m256i *beta128,*alpha128,*beta_ptr;
  __m256i beta_max;

  llr_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;
  llr_t m11_cw2,m10_cw2,beta0_cw2_16,beta1_cw2_16,beta2_cw2_16,beta3_cw2_16,beta4_cw2_16,beta5_cw2_16,beta6_cw2_16,beta7_cw2_16,beta0_2_cw2,beta1_2_cw2,beta2_2_cw2,beta3_2_cw2,beta_m_cw2;
  llr_t beta0,beta1;
  llr_t beta0_cw2,beta1_cw2;

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  unsigned long long timein,timeout;

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#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"compute_beta (avx2_16bit), %p,%p,%p,%p,framelength %d,F %d\n",
      beta,m_11,m_10,alpha,frame_length,F);
  fprintf(fdavx2b,"compute_beta (avx2_16bit), %p,%p,%p,%p,framelength %d,F %d\n",
      beta,m_11,m_10,alpha,frame_length,F);
#endif


  // termination for beta initialization

  //  fprintf(fdavx2,"beta init: offset8 %d\n",offset8_flag);
  m11=(int16_t)m_11[(frame_length<<1)+2];
  m10=(int16_t)m_10[(frame_length<<1)+2];

  m11_cw2=(int16_t)m_11[(frame_length<<1)+8+2];
  m10_cw2=(int16_t)m_10[(frame_length<<1)+8+2];

#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"m11,m10 %d,%d\n",m11,m10);
  fprintf(fdavx2b,"m11,m10 %d,%d\n",m11_cw2,m10_cw2);
#endif

  beta0 = -m11;//M0T_TERM;
  beta1 = m11;//M1T_TERM;
  beta0_cw2 = -m11_cw2;//M0T_TERM;
  beta1_cw2 = m11_cw2;//M1T_TERM;

  m11=(int16_t)m_11[(frame_length<<1)+1];
  m10=(int16_t)m_10[(frame_length<<1)+1];
  m11_cw2=(int16_t)m_11[(frame_length<<1)+1+8];
  m10_cw2=(int16_t)m_10[(frame_length<<1)+1+8];

#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"m11,m10 %d,%d\n",m11,m10);
  fprintf(fdavx2b,"m11,m10 %d,%d\n",m11_cw2,m10_cw2);
#endif
  beta0_2 = beta0-m11;//+M0T_TERM;
  beta1_2 = beta0+m11;//+M1T_TERM;
  beta2_2 = beta1+m10;//M2T_TERM;
  beta3_2 = beta1-m10;//+M3T_TERM;
  beta0_2_cw2 = beta0_cw2-m11_cw2;//+M0T_TERM;
  beta1_2_cw2 = beta0_cw2+m11_cw2;//+M1T_TERM;
  beta2_2_cw2 = beta1_cw2+m10_cw2;//M2T_TERM;
  beta3_2_cw2 = beta1_cw2-m10_cw2;//+M3T_TERM;

  m11=(int16_t)m_11[frame_length<<1];
  m10=(int16_t)m_10[frame_length<<1];
  m11_cw2=(int16_t)m_11[(frame_length<<1)+8];
  m10_cw2=(int16_t)m_10[(frame_length<<1)+8];
#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"m11,m10 %d,%d\n",m11,m10);
  fprintf(fdavx2b,"m11,m10 %d,%d\n",m11_cw2,m10_cw2);
#endif
  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;

  beta0_cw2_16 = beta0_2_cw2-m11_cw2;//+M0T_TERM;
  beta1_cw2_16 = beta0_2_cw2+m11_cw2;//+M1T_TERM;
  beta2_cw2_16 = beta1_2_cw2+m10_cw2;//+M2T_TERM;
  beta3_cw2_16 = beta1_2_cw2-m10_cw2;//+M3T_TERM;
  beta4_cw2_16 = beta2_2_cw2-m10_cw2;//+M4T_TERM;
  beta5_cw2_16 = beta2_2_cw2+m10_cw2;//+M5T_TERM;
  beta6_cw2_16 = beta3_2_cw2+m11_cw2;//+M6T_TERM;
  beta7_cw2_16 = beta3_2_cw2-m11_cw2;//+M7T_TERM;


  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;

  beta_m_cw2 = (beta0_cw2_16>beta1_cw2_16) ? beta0_cw2_16 : beta1_cw2_16;
  beta_m_cw2 = (beta_m_cw2>beta2_cw2_16) ? beta_m_cw2 : beta2_cw2_16;
  beta_m_cw2 = (beta_m_cw2>beta3_cw2_16) ? beta_m_cw2 : beta3_cw2_16;
  beta_m_cw2 = (beta_m_cw2>beta4_cw2_16) ? beta_m_cw2 : beta4_cw2_16;
  beta_m_cw2 = (beta_m_cw2>beta5_cw2_16) ? beta_m_cw2 : beta5_cw2_16;
  beta_m_cw2 = (beta_m_cw2>beta6_cw2_16) ? beta_m_cw2 : beta6_cw2_16;
  beta_m_cw2 = (beta_m_cw2>beta7_cw2_16) ? beta_m_cw2 : beta7_cw2_16;


  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;

  beta0_cw2_16=beta0_cw2_16-beta_m_cw2;
  beta1_cw2_16=beta1_cw2_16-beta_m_cw2;
  beta2_cw2_16=beta2_cw2_16-beta_m_cw2;
  beta3_cw2_16=beta3_cw2_16-beta_m_cw2;
  beta4_cw2_16=beta4_cw2_16-beta_m_cw2;
  beta5_cw2_16=beta5_cw2_16-beta_m_cw2;
  beta6_cw2_16=beta6_cw2_16-beta_m_cw2;
  beta7_cw2_16=beta7_cw2_16-beta_m_cw2;

  for (rerun_flag=0;; rerun_flag=1) {

    beta_ptr   = (__m256i*)&beta[frame_length<<4];
    alpha128   = (__m256i*)&alpha[0];

    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)];

#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"beta init \n");
      fprintf(fdavx2b,"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
    } else {

      beta128 = (__m256i*)&beta[0];
      beta_ptr[0] = _mm256_srli_si256(beta128[0],2);
      beta_ptr[1] = _mm256_srli_si256(beta128[1],2);
      beta_ptr[2] = _mm256_srli_si256(beta128[2],2);
      beta_ptr[3] = _mm256_srli_si256(beta128[3],2);
      beta_ptr[4] = _mm256_srli_si256(beta128[4],2);
      beta_ptr[5] = _mm256_srli_si256(beta128[5],2);
      beta_ptr[6] = _mm256_srli_si256(beta128[6],2);
      beta_ptr[7] = _mm256_srli_si256(beta128[7],2);
#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"beta init (second run)\n");
      fprintf(fdavx2b,"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]);
#endif
    }


    beta_ptr[0] = _mm256_insert_epi16(beta_ptr[0],beta0_16,7);
    beta_ptr[1] = _mm256_insert_epi16(beta_ptr[1],beta1_16,7);
    beta_ptr[2] = _mm256_insert_epi16(beta_ptr[2],beta2_16,7);
    beta_ptr[3] = _mm256_insert_epi16(beta_ptr[3],beta3_16,7);
    beta_ptr[4] = _mm256_insert_epi16(beta_ptr[4],beta4_16,7);
    beta_ptr[5] = _mm256_insert_epi16(beta_ptr[5],beta5_16,7);
    beta_ptr[6] = _mm256_insert_epi16(beta_ptr[6],beta6_16,7);
    beta_ptr[7] = _mm256_insert_epi16(beta_ptr[7],beta7_16,7);

    beta_ptr[0] = _mm256_insert_epi16(beta_ptr[0],beta0_cw2_16,15);
    beta_ptr[1] = _mm256_insert_epi16(beta_ptr[1],beta1_cw2_16,15);
    beta_ptr[2] = _mm256_insert_epi16(beta_ptr[2],beta2_cw2_16,15);
    beta_ptr[3] = _mm256_insert_epi16(beta_ptr[3],beta3_cw2_16,15);
    beta_ptr[4] = _mm256_insert_epi16(beta_ptr[4],beta4_cw2_16,15);
    beta_ptr[5] = _mm256_insert_epi16(beta_ptr[5],beta5_cw2_16,15);
    beta_ptr[6] = _mm256_insert_epi16(beta_ptr[6],beta6_cw2_16,15);
    beta_ptr[7] = _mm256_insert_epi16(beta_ptr[7],beta7_cw2_16,15);

#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"beta init (after insert) \n");
      fprintf(fdavx2b,"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
    int loopval=((rerun_flag==0)?0:((frame_length-L)>>3));

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    printf("beta: rerun %d => loopval %d\n",rerun_flag,loopval);

    timein = rdtsc_oai();

    m11p = (frame_length>>3)-1+(__m256i*)m_11;
    m10p = (frame_length>>3)-1+(__m256i*)m_10;

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    for (k=(frame_length>>3)-1; k>=loopval; k--) {

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      b4 = _mm256_load_si256(&beta_ptr[4]);
      b5 = _mm256_load_si256(&beta_ptr[5]);
      b6 = _mm256_load_si256(&beta_ptr[6]);
      b7 = _mm256_load_si256(&beta_ptr[7]);

      m_b0 = _mm256_adds_epi16(b4,*m11p);  //m11
      m_b1 = _mm256_subs_epi16(b4,*m11p);  //m00
      m_b2 = _mm256_subs_epi16(b5,*m10p);  //m01
      m_b3 = _mm256_adds_epi16(b5,*m10p);  //m10
      m_b4 = _mm256_adds_epi16(b6,*m10p);  //m10
      m_b5 = _mm256_subs_epi16(b6,*m10p);  //m01
      m_b6 = _mm256_subs_epi16(b7,*m11p);  //m00
      m_b7 = _mm256_adds_epi16(b7,*m11p);  //m11

      b0 = _mm256_load_si256(&beta_ptr[0]);
      b1 = _mm256_load_si256(&beta_ptr[1]);
      b2 = _mm256_load_si256(&beta_ptr[2]);
      b3 = _mm256_load_si256(&beta_ptr[3]);

      new0 = _mm256_subs_epi16(b0,*m11p);  //m00
      new1 = _mm256_adds_epi16(b0,*m11p);  //m11
      new2 = _mm256_adds_epi16(b1,*m10p);  //m10
      new3 = _mm256_subs_epi16(b1,*m10p);  //m01
      new4 = _mm256_subs_epi16(b2,*m10p);  //m01
      new5 = _mm256_adds_epi16(b2,*m10p);  //m10
      new6 = _mm256_adds_epi16(b3,*m11p);  //m11
      new7 = _mm256_subs_epi16(b3,*m11p);  //m00


      b0 = _mm256_max_epi16(m_b0,new0);
      b1 = _mm256_max_epi16(m_b1,new1);
      b2 = _mm256_max_epi16(m_b2,new2);
      b3 = _mm256_max_epi16(m_b3,new3);
      b4 = _mm256_max_epi16(m_b4,new4);
      b5 = _mm256_max_epi16(m_b5,new5);
      b6 = _mm256_max_epi16(m_b6,new6);
      b7 = _mm256_max_epi16(m_b7,new7);

      beta_max = _mm256_max_epi16(b0,b1);
      beta_max = _mm256_max_epi16(beta_max   ,b2);
      beta_max = _mm256_max_epi16(beta_max   ,b3);
      beta_max = _mm256_max_epi16(beta_max   ,b4);
      beta_max = _mm256_max_epi16(beta_max   ,b5);
      beta_max = _mm256_max_epi16(beta_max   ,b6);
      beta_max = _mm256_max_epi16(beta_max   ,b7);
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      beta_ptr-=8;
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      m11p--;
      m10p--;

      beta_ptr[0] = _mm256_subs_epi16(b0,beta_max);
      beta_ptr[1] = _mm256_subs_epi16(b1,beta_max);
      beta_ptr[2] = _mm256_subs_epi16(b2,beta_max);
      beta_ptr[3] = _mm256_subs_epi16(b3,beta_max);
      beta_ptr[4] = _mm256_subs_epi16(b4,beta_max);
      beta_ptr[5] = _mm256_subs_epi16(b5,beta_max);
      beta_ptr[6] = _mm256_subs_epi16(b6,beta_max);
      beta_ptr[7] = _mm256_subs_epi16(b7,beta_max);
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#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"Loop index %d, mb\n",k);
      fprintf(fdavx2,"beta init (after max)\n");
      fprintf(fdavx2b,"Loop index %d, mb\n",k);
      fprintf(fdavx2b,"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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    timeout = rdtsc_oai();
    printf("beta: inner loop time %llu\n",timeout-timein);
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    if (rerun_flag==1)
      break;
  }
}

void compute_ext16avx2(llr_t* alpha,llr_t* beta,llr_t* m_11,llr_t* m_10,llr_t* ext, llr_t* systematic,uint16_t frame_length)
{

  __m256i *alpha128=(__m256i *)alpha;
  __m256i *beta128=(__m256i *)beta;
  __m256i *m11_128,*m10_128,*ext_128;
  __m256i *alpha_ptr,*beta_ptr;
  __m256i m00_1,m00_2,m00_3,m00_4;
  __m256i m01_1,m01_2,m01_3,m01_4;
  __m256i m10_1,m10_2,m10_3,m10_4;
  __m256i m11_1,m11_2,m11_3,m11_4;

  int k;

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

#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"compute_ext (avx2_16bit), %p, %p, %p, %p, %p, %p ,framelength %d\n",alpha,beta,m_11,m_10,ext,systematic,frame_length);
  fprintf(fdavx2b,"compute_ext (avx2_16bit), %p, %p, %p, %p, %p, %p ,framelength %d\n",alpha,beta,m_11,m_10,ext,systematic,frame_length);
#endif

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


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


    m11_128        = (__m256i*)&m_11[k<<4];
    m10_128        = (__m256i*)&m_10[k<<4];
    ext_128        = (__m256i*)&ext[k<<4];

    /*
      fprintf(fdavx2,"EXT %03d\n",k);
      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]);
    */
    m00_4 = _mm256_adds_epi16(alpha_ptr[7],beta_ptr[3]); //ALPHA_BETA_4m00;
    m11_4 = _mm256_adds_epi16(alpha_ptr[7],beta_ptr[7]); //ALPHA_BETA_4m11;
    m00_3 = _mm256_adds_epi16(alpha_ptr[6],beta_ptr[7]); //ALPHA_BETA_3m00;
    m11_3 = _mm256_adds_epi16(alpha_ptr[6],beta_ptr[3]); //ALPHA_BETA_3m11;
    m00_2 = _mm256_adds_epi16(alpha_ptr[1],beta_ptr[4]); //ALPHA_BETA_2m00;
    m11_2 = _mm256_adds_epi16(alpha_ptr[1],beta_ptr[0]); //ALPHA_BETA_2m11;
    m11_1 = _mm256_adds_epi16(alpha_ptr[0],beta_ptr[4]); //ALPHA_BETA_1m11;
    m00_1 = _mm256_adds_epi16(alpha_ptr[0],beta_ptr[0]); //ALPHA_BETA_1m00;
    m01_4 = _mm256_adds_epi16(alpha_ptr[5],beta_ptr[6]); //ALPHA_BETA_4m01;
    m10_4 = _mm256_adds_epi16(alpha_ptr[5],beta_ptr[2]); //ALPHA_BETA_4m10;
    m01_3 = _mm256_adds_epi16(alpha_ptr[4],beta_ptr[2]); //ALPHA_BETA_3m01;
    m10_3 = _mm256_adds_epi16(alpha_ptr[4],beta_ptr[6]); //ALPHA_BETA_3m10;
    m01_2 = _mm256_adds_epi16(alpha_ptr[3],beta_ptr[1]); //ALPHA_BETA_2m01;
    m10_2 = _mm256_adds_epi16(alpha_ptr[3],beta_ptr[5]); //ALPHA_BETA_2m10;
    m10_1 = _mm256_adds_epi16(alpha_ptr[2],beta_ptr[1]); //ALPHA_BETA_1m10;
    m01_1 = _mm256_adds_epi16(alpha_ptr[2],beta_ptr[5]); //ALPHA_BETA_1m01;
    /*
      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 = _mm256_max_epi16(m01_1,m01_2);
    m01_1 = _mm256_max_epi16(m01_1,m01_3);
    m01_1 = _mm256_max_epi16(m01_1,m01_4);
    m00_1 = _mm256_max_epi16(m00_1,m00_2);
    m00_1 = _mm256_max_epi16(m00_1,m00_3);
    m00_1 = _mm256_max_epi16(m00_1,m00_4);
    m10_1 = _mm256_max_epi16(m10_1,m10_2);
    m10_1 = _mm256_max_epi16(m10_1,m10_3);
    m10_1 = _mm256_max_epi16(m10_1,m10_4);
    m11_1 = _mm256_max_epi16(m11_1,m11_2);
    m11_1 = _mm256_max_epi16(m11_1,m11_3);
    m11_1 = _mm256_max_epi16(m11_1,m11_4);

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

    m01_1 = _mm256_subs_epi16(m01_1,*m10_128);
    m00_1 = _mm256_subs_epi16(m00_1,*m11_128);
    m10_1 = _mm256_adds_epi16(m10_1,*m10_128);
    m11_1 = _mm256_adds_epi16(m11_1,*m11_128);

    //      print_shorts("m10_1:",&m10_1);
    //      print_shorts("m11_1:",&m11_1);
    m01_1 = _mm256_max_epi16(m01_1,m00_1);
    m10_1 = _mm256_max_epi16(m10_1,m11_1);
    //      print_shorts("m01_1:",&m01_1);
    //      print_shorts("m10_1:",&m10_1);

    *ext_128 = _mm256_subs_epi16(m10_1,m01_1);

#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"ext %p\n",ext_128);
    fprintf(fdavx2b,"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    

    alpha_ptr+=8;
    beta_ptr+=8;
    }
}



//int pi2[n],pi3[n+8],pi5[n+8],pi4[n+8],pi6[n+8],
int *pi2tab16avx2[188],*pi5tab16avx2[188],*pi4tab16avx2[188],*pi6tab16avx2[188];

void free_td16avx2(void)
{
  int ind;

  for (ind=0; ind<188; ind++) {
833 834 835 836
    free_and_zero(pi2tab16avx2[ind]);
    free_and_zero(pi5tab16avx2[ind]);
    free_and_zero(pi4tab16avx2[ind]);
    free_and_zero(pi6tab16avx2[ind]);
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  }
}

void init_td16avx2()
{

  int ind,i,i2,i3,j,n,pi,pi2_i,pi2_pi;
  short * base_interleaver;

  for (ind=0; ind<188; ind++) {
    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
    pi2tab16avx2[ind] = malloc((n+8)*sizeof(int));
    pi5tab16avx2[ind] = malloc((n+8)*sizeof(int));
    pi4tab16avx2[ind] = malloc((n+8)*sizeof(int));
    pi6tab16avx2[ind] = malloc((n+8)*sizeof(int));
#endif

    //    fprintf(fdavx2,"Interleaver index %d\n",ind);
    for (i=i2=0; i2<8; i2++) {
      j=i2;

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

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

        pi2tab16avx2[ind][i]  = ((j>>3)<<4) + (j&7); // 16*floor(j/8) + j mod8, which allows the second codeword to be in pi[i] + 8 
	//	fprintf(fdavx2,"pi2[%d] = %d(%d)\n",i, pi2tab16avx2[ind][i],j);
      }
    }

    for (i=0; i<n; i++) {
      pi = base_interleaver[i];//(uint32_t)threegpplte_interleaver(f1,f2,n);
      pi2_i  = ((pi2tab16avx2[ind][i]>>4)<<3)+(pi2tab16avx2[ind][i]&7);
      pi2_pi = ((pi2tab16avx2[ind][pi]>>4)<<3)+(pi2tab16avx2[ind][pi]&7);
      pi4tab16avx2[ind][pi2_i]  = pi2tab16avx2[ind][pi];
      pi5tab16avx2[ind][pi2_pi] = pi2tab16avx2[ind][i];
      pi6tab16avx2[ind][pi]     = pi2tab16avx2[ind][i];
    }

  }
}

unsigned char phy_threegpplte_turbo_decoder16avx2(int16_t *y,
						  int16_t *y2,
						  uint8_t *decoded_bytes,
						  uint8_t *decoded_bytes2,
						  uint16_t n,
						  uint16_t f1,
						  uint16_t f2,
						  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)
{

  /*  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 */


  llr_t systematic0[2*(n+16)] __attribute__ ((aligned(32)));
  llr_t systematic1[2*(n+16)] __attribute__ ((aligned(32)));
  llr_t systematic2[2*(n+16)] __attribute__ ((aligned(32)));
  llr_t yparity1[2*(n+16)] __attribute__ ((aligned(32)));
  llr_t yparity2[2*(n+16)] __attribute__ ((aligned(32)));

  llr_t ext[2*(n+128)] __attribute__((aligned(32)));
  llr_t ext2[2*(n+128)] __attribute__((aligned(32)));

  llr_t alpha[(n+16)*16] __attribute__ ((aligned(32)));
  llr_t beta[(n+16)*16] __attribute__ ((aligned(32)));
  llr_t m11[2*(n+16)] __attribute__ ((aligned(32)));
  llr_t m10[2*(n+16)] __attribute__ ((aligned(32)));


  int *pi2_p,*pi4_p,*pi5_p,*pi6_p;
  llr_t *s,*s1,*s2,*yp1,*yp2,*yp,*yp_cw2;
  uint32_t i,j,iind;//,pi;
  uint8_t iteration_cnt=0;
  uint32_t crc,oldcrc,crc_cw2,oldcrc_cw2,crc_len;
  uint8_t temp;
  uint32_t db;


  __m256i tmp, zeros=_mm256_setzero_si256();
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  int offset8_flag=0;

#ifdef DEBUG_LOGMAP
  fdavx2 = fopen("dump_avx2.txt","w");
  fdavx2b = fopen("dump_avx2b.txt","w");

  printf("tc avx2_16 (y,y2) %p,%p\n",y,y2);
#endif
  if (crc_type > 3) {
    printf("Illegal crc length!\n");
    return 255;
  }


  start_meas(init_stats);



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

  if ( iind == 188 ) {
    printf("Illegal frame length!\n");
    return 255;
  }

  switch (crc_type) {
  case CRC24_A:
  case CRC24_B:
    crc_len=3;
    break;

  case CRC16:
    crc_len=2;
    break;

  case CRC8:
    crc_len=1;
    break;

  default:
    crc_len=3;
  }


  s = systematic0;
  s1 = systematic1;
  s2 = systematic2;
  yp1 = yparity1;
  yp2 = yparity2;


990
#if 0
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  __m128i *yp128,*yp128_cw2;
  __m128i tmpe,tmpe_cw2;
  yp128 = (__m128i*)y;
  yp128_cw2 = (__m128i*)y2;



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  for (i=0; i<n; i+=8) {
    pi2_p = &pi2tab16avx2[iind][i];

    j=pi2_p[0];


    tmpe  = _mm_load_si128(yp128);
    tmpe_cw2 = _mm_load_si128(yp128_cw2);
    //    fprintf(fdavx2,"yp128 %p\n",yp128);
    //    print_shorts("tmpe",(int16_t*)&tmpe);

    s[j]     = _mm_extract_epi16(tmpe,0);
    yp1[j]   = _mm_extract_epi16(tmpe,1);
    yp2[j]   = _mm_extract_epi16(tmpe,2);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,0);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,1);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,2);

#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init0: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init0: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif

    j=pi2_p[1];

    s[j]   = _mm_extract_epi16(tmpe,3);
    yp1[j] = _mm_extract_epi16(tmpe,4);
    yp2[j] = _mm_extract_epi16(tmpe,5);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,3);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,4);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,5);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init1: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init1: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif
    j=pi2_p[2];

    s[j]   = _mm_extract_epi16(tmpe,6);
    yp1[j] = _mm_extract_epi16(tmpe,7);
    tmpe = _mm_load_si128(&yp128[1]);
    yp2[j] = _mm_extract_epi16(tmpe,0);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,6);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,7);
    tmpe_cw2 = _mm_load_si128(&yp128_cw2[1]);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,0);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init2: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init2: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif
    j=pi2_p[3];

    s[j]   = _mm_extract_epi16(tmpe,1);
    yp1[j] = _mm_extract_epi16(tmpe,2);
    yp2[j] = _mm_extract_epi16(tmpe,3);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,1);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,2);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,3);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init3: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init3: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif
    j=pi2_p[4];

    s[j]   = _mm_extract_epi16(tmpe,4);
    yp1[j] = _mm_extract_epi16(tmpe,5);
    yp2[j] = _mm_extract_epi16(tmpe,6);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,4);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,5);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,6);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init4: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init4: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif
    j=pi2_p[5];

    s[j]   = _mm_extract_epi16(tmpe,7);
    tmpe = _mm_load_si128(&yp128[2]);
    yp1[j] = _mm_extract_epi16(tmpe,0);
    yp2[j] = _mm_extract_epi16(tmpe,1);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,7);
    tmpe_cw2 = _mm_load_si128(&yp128_cw2[2]);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,0);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,1);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init5: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init5: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif
    j=pi2_p[6];

    s[j]   = _mm_extract_epi16(tmpe,2);
    yp1[j] = _mm_extract_epi16(tmpe,3);
    yp2[j] = _mm_extract_epi16(tmpe,4);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,2);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,3);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,4);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init6: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init6: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif
    j=pi2_p[7];

    s[j]   = _mm_extract_epi16(tmpe,5);
    yp1[j] = _mm_extract_epi16(tmpe,6);
    yp2[j] = _mm_extract_epi16(tmpe,7);
    s[j+8]   = _mm_extract_epi16(tmpe_cw2,5);
    yp1[j+8] = _mm_extract_epi16(tmpe_cw2,6);
    yp2[j+8] = _mm_extract_epi16(tmpe_cw2,7);
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"init7: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j],yp1[j],yp2[j]);
    fprintf(fdavx2b,"init7: j %d, s[j] %d yp1[j] %d yp2[j] %d\n",((j>>4)<<3)+(j&7),s[j+8],yp1[j+8],yp2[j+8]);
#endif
    yp128+=3;
    yp128_cw2+=3;

  }
  yp=(llr_t*)yp128;
  yp_cw2=(llr_t*)yp128_cw2;
1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
#else
  
  pi2_p    = &pi2tab16avx2[iind][0];
  for (i=0,j=0; i<n; i++) {
    s[*pi2_p]     = y[j];
    s[*pi2_p+8]   = y2[j++];
    yp1[*pi2_p]   = y[j];
    yp1[*pi2_p+8] = y2[j++];
    yp2[*pi2_p]   = y[j];
    yp2[(*pi2_p++)+8] = y2[j++];
  }    
  yp=(llr_t*)&y[j];
  yp_cw2=(llr_t*)&y2[j];
#endif

1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377

  // Termination
  for (i=0; i<3; i++) {
    s[(n<<1)+i]    = *yp;
    s1[(n<<1)+i]   = *yp;
    s2[(n<<1)+i]   = *yp;
    yp++;
    yp1[(n<<1)+i]  = *yp;
    yp++;

    s[(n<<1)+i+8]   = *yp_cw2;
    s1[(n<<1)+i+8]  = *yp_cw2;
    s2[(n<<1)+i+8]  = *yp_cw2;
    yp_cw2++;
    yp1[(n<<1)+i+8] = *yp_cw2;
    yp_cw2++;
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"Term 1 (%d): %d %d\n",n+i,s[(n<<1)+i],yp1[(n<<1)+i]);
    fprintf(fdavx2b,"Term 1 (%d): %d %d\n",n+i,s[(n<<1)+i+8],yp1[(n<<1)+i+8]);
#endif //DEBUG_LOGMAP
  }

  for (i=16; i<19; i++) {
    s[(n<<1)+i]  = *yp;
    s1[(n<<1)+i] = *yp;
    s2[(n<<1)+i] = *yp;
    yp++;
    yp2[(n<<1)+(i-16)] = *yp;
    yp++;

    s[(n<<1)+i+8]= *yp_cw2;
    s1[(n<<1)+i+8] = *yp_cw2 ;
    s2[(n<<1)+i+8] = *yp_cw2;
    yp_cw2++;
    yp2[(n<<1)+i-16+8] = *yp_cw2;
    yp_cw2++;
#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"Term 2 (%d): %d %d\n",n+i-3-8,s[(n<<1)+i],yp2[(n<<1)+i-16]);
    fprintf(fdavx2b,"Term 2 (%d): %d %d\n",n+i-3-8,s[(n<<1)+i+8],yp2[(n<<1)+i-16+8]);
#endif //DEBUG_LOGMAP
  }

#ifdef DEBUG_LOGMAP
  fprintf(fdavx2,"\n");
  fprintf(fdavx2b,"\n");
#endif //DEBUG_LOGMAP

  stop_meas(init_stats);

  // do log_map from first parity bit

  log_map16avx2(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) {

#ifdef DEBUG_LOGMAP
    fprintf(fdavx2,"\n*******************ITERATION %d (n %d), ext %p\n\n",iteration_cnt,n,ext);
    fprintf(fdavx2b,"\n*******************ITERATION %d (n %d), ext %p\n\n",iteration_cnt,n,ext);
#endif //DEBUG_LOGMAP
 
    start_meas(intl1_stats);

    pi4_p=pi4tab16avx2[iind];

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

      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],0);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],8);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],1);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],9);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],2);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],10);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],3);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],11);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],4);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],12);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],5);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],13);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],6);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],14);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[*pi4_p],7);
      ((__m256i *)systematic2)[i]=_mm256_insert_epi16(((__m256i *)systematic2)[i],ext[8+*pi4_p++],15);
#ifdef DEBUG_LOGMAP
      print_shorts("syst2",(int16_t*)&((__m256i *)systematic2)[i]);
#endif
    }

    stop_meas(intl1_stats);

    // do log_map from second parity bit

    log_map16avx2(systematic2,yparity2,m11,m10,alpha,beta,ext2,n,1,F,offset8_flag,alpha_stats,beta_stats,gamma_stats,ext_stats);



    pi5_p=pi5tab16avx2[iind];

    for (i=0; i<(n>>3); i++) {

      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],0);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],8);
      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],1);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],9);
      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],2);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],10);
      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],3);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],11);
      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],4);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],12);
      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],5);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],13);
      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],6);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],14);
      tmp=_mm256_insert_epi16(tmp,ext2[*pi5_p],7);
      tmp=_mm256_insert_epi16(tmp,ext2[8+*pi5_p++],15);
      ((__m256i *)systematic1)[i] = _mm256_adds_epi16(_mm256_subs_epi16(tmp,((__m256i*)ext)[i]),((__m256i *)systematic0)[i]);
#ifdef DEBUG_LOGMAP
      print_shorts("syst1",(int16_t*)&((__m256i *)systematic1)[i]);
#endif
    }

    if (iteration_cnt>1) {
      start_meas(intl2_stats);
      pi6_p=pi6tab16avx2[iind];

      for (i=0; i<(n>>3); i++) {

        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],7);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],15);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],6);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],14);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],5);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],13);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],4);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],12);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],3);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],11);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],2);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],10);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],1);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],9);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[*pi6_p],0);
        tmp=_mm256_insert_epi16(tmp, ((llr_t*)ext2)[8+*pi6_p++],8);
#ifdef DEBUG_LOGMAP
	print_shorts("tmp",(int16_t*)&tmp);
#endif
        tmp=_mm256_cmpgt_epi8(_mm256_packs_epi16(tmp,zeros),zeros);
        db=(uint32_t)_mm256_movemask_epi8(tmp);
	decoded_bytes[i]=db&0xff;
	decoded_bytes2[i]=(uint8_t)(db>>16)&0xff;
#ifdef DEBUG_LOGMAP
	print_shorts("tmp",(int16_t*)&tmp);
	fprintf(fdavx2,"decoded_bytes[%d] %x (%x)\n",i,decoded_bytes[i],db);
	fprintf(fdavx2b,"decoded_bytes[%d] %x (%x)\n",i,decoded_bytes2[i],db);
#endif
      }
    }

    // check status on output
    if (iteration_cnt>1) {
      oldcrc= *((uint32_t *)(&decoded_bytes[(n>>3)-crc_len]));

      switch (crc_type) {

      case CRC24_A:
        oldcrc&=0x00ffffff;
        crc = crc24a(&decoded_bytes[F>>3],
                     n-24-F)>>8;
        temp=((uint8_t *)&crc)[2];
        ((uint8_t *)&crc)[2] = ((uint8_t *)&crc)[0];
        ((uint8_t *)&crc)[0] = temp;
        break;

      case CRC24_B:
        oldcrc&=0x00ffffff;
        crc = crc24b(decoded_bytes,
                     n-24)>>8;
        temp=((uint8_t *)&crc)[2];
        ((uint8_t *)&crc)[2] = ((uint8_t *)&crc)[0];
        ((uint8_t *)&crc)[0] = temp;
        break;

      case CRC16:
        oldcrc&=0x0000ffff;
        crc = crc16(decoded_bytes,
                    n-16)>>16;
        break;

      case CRC8:
        oldcrc&=0x000000ff;
        crc = crc8(decoded_bytes,
                   n-8)>>24;
        break;

      default:
        printf("FATAL: 3gpplte_turbo_decoder_sse.c: Unknown CRC\n");
        return(255);
        break;
      }

      // second CW
      oldcrc_cw2= *((uint32_t *)(&decoded_bytes2[(n>>3)-crc_len]));

      switch (crc_type) {

      case CRC24_A:
        oldcrc_cw2&=0x00ffffff;
        crc_cw2 = crc24a(&decoded_bytes2[F>>3],
			 n-24-F)>>8;
        temp=((uint8_t *)&crc_cw2)[2];
        ((uint8_t *)&crc_cw2)[2] = ((uint8_t *)&crc_cw2)[0];
        ((uint8_t *)&crc_cw2)[0] = temp;
        break;

      case CRC24_B:
        oldcrc_cw2&=0x00ffffff;
        crc_cw2 = crc24b(decoded_bytes2,
			 n-24)>>8;
        temp=((uint8_t *)&crc_cw2)[2];
        ((uint8_t *)&crc_cw2)[2] = ((uint8_t *)&crc_cw2)[0];
        ((uint8_t *)&crc_cw2)[0] = temp;
        break;

      case CRC16:
        oldcrc_cw2&=0x0000ffff;
        crc_cw2 = crc16(decoded_bytes2,
			n-16)>>16;
        break;

      case CRC8:
        oldcrc_cw2&=0x000000ff;
        crc_cw2 = crc8(decoded_bytes2,
		       n-8)>>24;
        break;

      default:
        printf("FATAL: 3gpplte_turbo_decoder_sse.c: Unknown CRC\n");
        return(255);
        break;
      }

      stop_meas(intl2_stats);

#ifdef DEBUG_LOGMAP
      fprintf(fdavx2,"oldcrc %x, crc %x, oldcrc_cw2 %x, crc_cw2 %x\n",oldcrc,crc,oldcrc_cw2,crc_cw2);
      fprintf(fdavx2b,"oldcrc %x, crc %x, oldcrc_cw2 %x, crc_cw2 %x\n",oldcrc,crc,oldcrc_cw2,crc_cw2);
#endif

1378
      if (crc == oldcrc && crc_cw2 == oldcrc_cw2) {
1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411
        return(iteration_cnt);
      }
    }

    // do log_map from first parity bit
    if (iteration_cnt < max_iterations) {
      log_map16avx2(systematic1,yparity1,m11,m10,alpha,beta,ext,n,0,F,offset8_flag,alpha_stats,beta_stats,gamma_stats,ext_stats);

      __m256i* ext_128=(__m256i*) ext;
      __m256i* s1_128=(__m256i*) systematic1;
      __m256i* s0_128=(__m256i*) systematic0;
      int myloop=n>>3;

      for (i=0; i<myloop; i++) {

        *ext_128=_mm256_adds_epi16(_mm256_subs_epi16(*ext_128,*s1_128++),*s0_128++);
        ext_128++;
      }
    }
  }

  //  fprintf(fdavx2,"crc %x, oldcrc %x\n",crc,oldcrc);


  _mm_empty();
  _m_empty();

#ifdef DEBUG_LOGMAP
  fclose(fdavx2);
#endif
  return(iteration_cnt);
}

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#endif //__AVX2__
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