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openairinterface5g/openair1/PHY/CODING/3gpplte_turbo_decoder_sse_16bit.c
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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
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* 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
*/
/* 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
*/
///
///
#undef __AVX2__
#include "PHY/sse_intrin.h"
#ifndef TEST_DEBUG
#include "PHY/impl_defs_top.h"
#include "PHY/defs_common.h"
#include "PHY/CODING/coding_defs.h"
#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
//#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
#undef __AVX2__
#ifdef DEBUG_LOGMAP
FILE *fdsse4;
#endif
typedef int16_t llr_t; // internal decoder LLR data is 16-bit fixed
typedef int16_t channel_t;
#define MAX 256
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);
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,
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) {
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"log_map, frame_length %d\n",frame_length);
#endif
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);
}
void compute_gamma16(llr_t *m11,llr_t *m10,llr_t *systematic,channel_t *y_parity,
unsigned short frame_length,unsigned char term_flag) {
int k,K1;
#if defined(__x86_64__)||defined(__i386__)
__m128i *systematic128 = (__m128i *)systematic;
__m128i *y_parity128 = (__m128i *)y_parity;
__m128i *m10_128 = (__m128i *)m10;
__m128i *m11_128 = (__m128i *)m11;
#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
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"compute_gamma (sse_16bit), %p,%p,%p,%p,framelength %d\n",m11,m10,systematic,y_parity,frame_length);
#endif
#ifndef __AVX2__
K1=frame_length>>3;
#else
if ((frame_length&15) > 0)
K1=(frame_length+1)>>4;
else
K1=frame_length>>4;
#endif
for (k=0; k<K1; k++) {
#if defined(__x86_64__) || defined(__i386__)
#ifndef __AVX2__
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);
#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
#elif defined(__arm__)
m11_128[k] = vhaddq_s16(systematic128[k],y_parity128[k]);
m10_128[k] = vhsubq_s16(systematic128[k],y_parity128[k]);
#endif
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"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
}
k=frame_length>>3;
// Termination
#if defined(__x86_64__) || defined(__i386__)
m11_128[k] = _mm_srai_epi16(_mm_adds_epi16(systematic128[k+term_flag],y_parity128[k]),1);
//#ifndef __AVX2__
#if 1
m10_128[k] = _mm_srai_epi16(_mm_subs_epi16(systematic128[k+term_flag],y_parity128[k]),1);
#else
m10_128[k] = _mm_srai_epi16(_mm_subs_epi16(y_parity128[k],systematic128[k+term_flag]),1);
#endif
#elif defined(__arm__)
m11_128[k] = vhaddq_s16(systematic128[k+term_flag],y_parity128[k]);
m10_128[k] = vhsubq_s16(systematic128[k+term_flag],y_parity128[k]);
#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]);
#endif
}
#define L 40
void compute_alpha16(llr_t *alpha,llr_t *beta,llr_t *m_11,llr_t *m_10,unsigned short frame_length,unsigned char F) {
int k,l,l2,K1,rerun_flag=0;
#if defined(__x86_64__) || defined(__i386__)
__m128i *alpha128=(__m128i *)alpha,*alpha_ptr,*m11p,*m10p;
//#ifndef __AVX2__
#if 1
__m128i a0,a1,a2,a3,a4,a5,a6,a7;
__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;
#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
#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
l2 = L>>3;
K1 = (frame_length>>3);
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"compute_alpha (sse_16bit)\n");
#endif
for (l=K1;; l=l2,rerun_flag=1) {
#if defined(__x86_64__) || defined(__i386__)
alpha128 = (__m128i *)alpha;
//#ifdef __AVX2__
#elif defined(__arm__)
alpha128 = (int16x8_t *)alpha;
#endif
if (rerun_flag == 0) {
#if defined(__x86_64__) || defined(__i386__)
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);
#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
fprintf(fdsse4,"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
#if defined(__x86_64__) || defined(__i386__)
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);
#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
// 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;
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"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];
//#ifdef __AVX2__
#if defined(__x86_64__) || defined(__i386__)
m11p = (__m128i *)m_11;
m10p = (__m128i *)m_10;
#elif defined(__arm__)
m11p = (int16x8_t *)m_11;
m10p = (int16x8_t *)m_10;
#endif
for (k=0;
k<l;
k++) {
#if defined(__x86_64__) || defined(__i386__)
//#ifndef __AVX2__
#if 1
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
m_b4 = _mm_subs_epi16(a1,*m11p); // m00=-m11
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]);
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
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);
#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
#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
alpha_ptr+=8;
//#ifdef __AVX2__
m11p++;
m10p++;
#if defined(__x86_64__) || defined(__i386__)
//#ifndef __AVX2__
#if 1
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);
#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
#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
fprintf(fdsse4,"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(fdsse4,"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(fdsse4,"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(fdsse4,"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;
}
}
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) {
int k,rerun_flag=0;
#if defined(__x86_64__) || defined(__i386__)
__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;
__m128i beta_max;
#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
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;
llr_t beta0,beta1;
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"compute_beta, %p,%p,%p,%p,framelength %d,F %d\n",
beta,m_11,m_10,alpha,frame_length,F);
#endif
// termination for beta initialization
// fprintf(fdsse4,"beta init: offset8 %d\n",offset8_flag);
m11=(int16_t)m_11[2+frame_length];
//#ifndef __AVX2__
#if 1
m10=(int16_t)m_10[2+frame_length];
#else
m10=-(int16_t)m_10[2+frame_length];
#endif
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"m11,m10 %d,%d\n",m11,m10);
#endif
beta0 = -m11;//M0T_TERM;
beta1 = m11;//M1T_TERM;
m11=(int16_t)m_11[1+frame_length];
m10=(int16_t)m_10[1+frame_length];
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"m11,m10 %d,%d\n",m11,m10);
#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;
m11=(int16_t)m_11[frame_length];
m10=(int16_t)m_10[frame_length];
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"m11,m10 %d,%d\n",m11,m10);
#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;
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;
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;
for (rerun_flag=0;; rerun_flag=1) {
#if defined(__x86_64__) || defined(__i386__)
beta_ptr = (__m128i *)&beta[frame_length<<3];
alpha128 = (__m128i *)&alpha[0];
#elif defined(__arm__)
beta_ptr = (int16x8_t *)&beta[frame_length<<3];
alpha128 = (int16x8_t *)&alpha[0];
#endif
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(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
} else {
#if defined(__x86_64__) || defined(__i386__)
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);
#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);
#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]);
#endif
}
#if defined(__x86_64__) || defined(__i386__)
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);
#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
#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
int loopval=((rerun_flag==0)?0:((frame_length-L)>>3));
for (k=(frame_length>>3)-1; k>=loopval; k--) {
#if defined(__x86_64__) || defined(__i386__)
m11_128=((__m128i *)m_11)[k];
m10_128=((__m128i *)m_10)[k];
//#ifndef __AVX2__
#if 1
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
m_b4 = _mm_adds_epi16(beta_ptr[6],m10_128); //m10
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
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
#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
beta_ptr-=8;
//#ifndef __AVX2__
#if 1
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);
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);
beta_ptr[6] = _mm_subs_epi16(beta_ptr[6],beta_max);
beta_ptr[7] = _mm_subs_epi16(beta_ptr[7],beta_max);
#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
#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;
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
#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
}
if (rerun_flag==1)
break;
}
}
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) {
#if defined(__x86_64__) || defined(__i386__)
__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;
#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
int k;
//
// LLR computation, 8 consequtive bits per loop
//
#ifdef DEBUG_LOGMAP
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);
#endif
alpha_ptr = alpha128;
beta_ptr = &beta128[8];
for (k=0; k<(frame_length>>3); k++) {
#if defined(__x86_64__) || defined(__i386__)
m11_128 = (__m128i *)&m_11[k<<3];
m10_128 = (__m128i *)&m_10[k<<3];
ext_128 = (__m128i *)&ext[k<<3];
/*
fprintf(fdsse4,"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]);
*/
//#ifndef __AVX2__
#if 1
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;
#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
/*
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);
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);
#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
#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
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];
void free_td16(void) {
int ind;
for (ind=0; ind<188; ind++) {
free_and_zero(pi2tab16[ind]);
free_and_zero(pi5tab16[ind]);
free_and_zero(pi4tab16[ind]);
free_and_zero(pi6tab16[ind]);
}
}
void init_td16(void) {
int ind,i,i2,i3,j,n,pi,pi3;
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
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
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);
pi2tab16[ind][i] = j;
// fprintf(fdsse4,"pi2[%d] = %d\n",i,j);
}
}
for (i=0; i<n; i++) {
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];
}
}
}
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) {
/* 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[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)));
llr_t ext[n+128] __attribute__((aligned(32)));
llr_t ext2[n+128] __attribute__((aligned(32)));
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)));
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;
uint8_t temp;
#if defined(__x86_64__) || defined(__i386__)
__m128i *yp128;
__m128i tmp={0}, zeros=_mm_setzero_si128();
__m128i tmpe;
#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
int offset8_flag=0;
#ifdef DEBUG_LOGMAP
fdsse4 = fopen("dump_sse4.txt","w");
printf("tc sse4_16 (y) %p\n",y);
#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;
}
#if defined(__x86_64__) || defined(__i386__)
yp128 = (__m128i *)y;
#elif defined(__arm__)
yp128 = (int16x8_t *)y;
#endif
s = systematic0;
s1 = systematic1;
s2 = systematic2;
yp1 = yparity1;
yp2 = yparity2;
for (i=0; i<n; i+=8) {
pi2_p = &pi2tab16[iind][i];
j=pi2_p[0];
#if defined(__x86_64__) || defined(__i386__)
tmpe = _mm_load_si128(yp128);
// fprintf(fdsse4,"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);
#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
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);
#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
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);
#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
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);
#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
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);
#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
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);
#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
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);
#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
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);
#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
#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
yp128+=3;
}
yp=(llr_t *)yp128;
// Termination
for (i=n; i<n+3; i++) {
s[i]= *yp;
s1[i] = s[i] ;
s2[i] = s[i];
yp++;
yp1[i] = *yp;
yp++;
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"Term 1 (%u): %d %d\n",i,s[i],yp1[i]);
#endif //DEBUG_LOGMAP
}
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++;
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"Term 2 (%u): %d %d\n",i-3,s[i],yp2[i-8]);
#endif //DEBUG_LOGMAP
}
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"\n");
#endif //DEBUG_LOGMAP
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) {
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"\n*******************ITERATION %d (n %d), ext %p\n\n",iteration_cnt,n,ext);
#endif //DEBUG_LOGMAP
start_meas(intl1_stats);
pi4_p=pi4tab16[iind];
for (i=0; i<(n>>3); i++) { // steady-state portion
#if defined(__x86_64__) || defined(__i386__)
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],0);
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],1);
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],2);
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],3);
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],4);
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],5);
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],6);
((__m128i *)systematic2)[i]=_mm_insert_epi16(((__m128i *)systematic2)[i],ext[*pi4_p++],7);
#elif defined(__arm__)
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],0);
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],1);
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],2);
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],3);
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],4);
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],5);
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],6);
((int16x8_t *)systematic2)[i]=vsetq_lane_s16(ext[*pi4_p++],((int16x8_t *)systematic2)[i],7);
#endif
#ifdef DEBUG_LOGMAP
print_shorts("syst2",(int16_t *)&((__m128i *)systematic2)[i]);
#endif
}
stop_meas(intl1_stats);
// do log_map from second parity bit
log_map16(systematic2,yparity2,m11,m10,alpha,beta,ext2,n,1,F,offset8_flag,alpha_stats,beta_stats,gamma_stats,ext_stats);
pi5_p=pi5tab16[iind];
for (i=0; i<(n>>3); i++) {
#if defined(__x86_64__) || defined(__i386__)
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],0);
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],1);
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],2);
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],3);
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],4);
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],5);
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],6);
tmp=_mm_insert_epi16(tmp,ext2[*pi5_p++],7);
((__m128i *)systematic1)[i] = _mm_adds_epi16(_mm_subs_epi16(tmp,((__m128i *)ext)[i]),((__m128i *)systematic0)[i]);
#elif defined(__arm__)
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,0);
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,1);
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,2);
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,3);
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,4);
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,5);
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,6);
tmp=vsetq_lane_s16(ext2[*pi5_p++],tmp,7);
((int16x8_t *)systematic1)[i] = vqaddq_s16(vqsubq_s16(tmp,((int16x8_t *)ext)[i]),((int16x8_t *)systematic0)[i]);
#endif
#ifdef DEBUG_LOGMAP
print_shorts("syst1",(int16_t *)&((__m128i *)systematic1)[i]);
#endif
}
if (iteration_cnt>1) {
start_meas(intl2_stats);
pi6_p=pi6tab16[iind];
for (i=0; i<(n>>3); i++) {
#if defined(__x86_64__) || defined(__i386__)
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],7);
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],6);
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],5);
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],4);
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],3);
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],2);
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],1);
tmp=_mm_insert_epi16(tmp, ((llr_t *)ext2)[*pi6_p++],0);
#ifdef DEBUG_LOGMAP
print_shorts("tmp",(int16_t *)&tmp);
#endif
tmp=_mm_cmpgt_epi8(_mm_packs_epi16(tmp,zeros),zeros);
decoded_bytes[i]=(unsigned char)_mm_movemask_epi8(tmp);
#elif defined(__arm__)
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,7);
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,6);
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,5);
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,4);
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,3);
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,2);
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,1);
tmp=vsetq_lane_s16(ext2[*pi6_p++],tmp,0);
// This does:
// [1 2 4 8 16 32 64 128] .* I(ext_i > 0) = 2.^[b0 b1 b2 b3 b4 b5 b6 b7], where bi =I(ext_i > 0)
// [2^b0 + 2^b1 2^b2 + 2^b3 2^b4 + 2^b5 2^b6 + 2^b7]
// [2^b0 + 2^b1 + 2^b2 + 2^b3 2^b4 + 2^b5 + 2^b6 + 2^b7]
// Mask64 = 2^b0 + 2^b1 + 2^b2 + 2^b3 + 2^b4 + 2^b5 + 2^b6 + 2^b7
uint64x2_t Mask = vpaddlq_u32(vpaddlq_u16(vandq_u16(vcgtq_s16(tmp,zeros), Powers)));
uint64x1_t Mask64 = vget_high_u64(Mask)+vget_low_u64(Mask);
decoded_bytes[i] = (uint8_t)Mask64;
#endif
#ifdef DEBUG_LOGMAP
print_shorts("tmp",(int16_t *)&tmp);
fprintf(fdsse4,"decoded_bytes[%u] %x\n",i,decoded_bytes[i]);
#endif
}
}
// check status on output
if (iteration_cnt>1) {
oldcrc= *((unsigned int *)(&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;
}
stop_meas(intl2_stats);
#ifdef DEBUG_LOGMAP
fprintf(fdsse4,"oldcrc %x, crc %x\n",oldcrc,crc);
#endif
if (crc == oldcrc) {
return(iteration_cnt);
}
}
// do log_map from first parity bit
if (iteration_cnt < max_iterations) {
log_map16(systematic1,yparity1,m11,m10,alpha,beta,ext,n,0,F,offset8_flag,alpha_stats,beta_stats,gamma_stats,ext_stats);
#if defined(__x86_64__) || defined(__i386__)
__m128i *ext_128=(__m128i *) ext;
__m128i *s1_128=(__m128i *) systematic1;
__m128i *s0_128=(__m128i *) systematic0;
#elif defined(__arm__)
int16x8_t *ext_128=(int16x8_t *) ext;
int16x8_t *s1_128=(int16x8_t *) systematic1;
int16x8_t *s0_128=(int16x8_t *) systematic0;
#endif
int myloop=n>>3;
for (i=0; i<myloop; i++) {
#if defined(__x86_64__) || defined(__i386__)
*ext_128=_mm_adds_epi16(_mm_subs_epi16(*ext_128,*s1_128++),*s0_128++);
#elif defined(__arm__)
*ext_128=vqaddq_s16(vqsubq_s16(*ext_128,*s1_128++),*s0_128++);
#endif
ext_128++;
}
}
}
// fprintf(fdsse4,"crc %x, oldcrc %x\n",crc,oldcrc);
#ifdef DEBUG_LOGMAP
fclose(fdsse4);
#endif
#if defined(__x86_64__) || defined(__i386__)
_mm_empty();
_m_empty();
#endif
return(iteration_cnt);
}
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