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volk_8ic_deinterleave_16i_x2.h
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/* -*- c++ -*- */
/*
* Copyright 2012, 2014 Free Software Foundation, Inc.
*
* This file is part of VOLK
*
* SPDX-License-Identifier: LGPL-3.0-or-later
*/
#ifndef INCLUDED_volk_8ic_deinterleave_16i_x2_a_H
#define INCLUDED_volk_8ic_deinterleave_16i_x2_a_H
#include <inttypes.h>
#include <stdio.h>
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
static inline void volk_8ic_deinterleave_16i_x2_a_avx2(int16_t* iBuffer,
int16_t* qBuffer,
const lv_8sc_t* complexVector,
unsigned int num_points)
{
unsigned int number = 0;
const int8_t* complexVectorPtr = (int8_t*)complexVector;
int16_t* iBufferPtr = iBuffer;
int16_t* qBufferPtr = qBuffer;
__m256i MoveMask = _mm256_set_epi8(15,
13,
11,
9,
7,
5,
3,
1,
14,
12,
10,
8,
6,
4,
2,
0,
15,
13,
11,
9,
7,
5,
3,
1,
14,
12,
10,
8,
6,
4,
2,
0);
__m256i complexVal, iOutputVal, qOutputVal;
__m128i iOutputVal0, qOutputVal0;
unsigned int sixteenthPoints = num_points / 16;
for (number = 0; number < sixteenthPoints; number++) {
complexVal = _mm256_load_si256((__m256i*)complexVectorPtr);
complexVectorPtr += 32;
complexVal = _mm256_shuffle_epi8(complexVal, MoveMask);
complexVal = _mm256_permute4x64_epi64(complexVal, 0xd8);
iOutputVal0 = _mm256_extracti128_si256(complexVal, 0);
qOutputVal0 = _mm256_extracti128_si256(complexVal, 1);
iOutputVal = _mm256_cvtepi8_epi16(iOutputVal0);
iOutputVal = _mm256_slli_epi16(iOutputVal, 8);
qOutputVal = _mm256_cvtepi8_epi16(qOutputVal0);
qOutputVal = _mm256_slli_epi16(qOutputVal, 8);
_mm256_store_si256((__m256i*)iBufferPtr, iOutputVal);
_mm256_store_si256((__m256i*)qBufferPtr, qOutputVal);
iBufferPtr += 16;
qBufferPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
*iBufferPtr++ =
((int16_t)*complexVectorPtr++) *
256; // load 8 bit Complexvector into 16 bit, shift left by 8 bits and store
*qBufferPtr++ = ((int16_t)*complexVectorPtr++) * 256;
}
}
#endif /* LV_HAVE_AVX2 */
#ifdef LV_HAVE_SSE4_1
#include <smmintrin.h>
static inline void volk_8ic_deinterleave_16i_x2_a_sse4_1(int16_t* iBuffer,
int16_t* qBuffer,
const lv_8sc_t* complexVector,
unsigned int num_points)
{
unsigned int number = 0;
const int8_t* complexVectorPtr = (int8_t*)complexVector;
int16_t* iBufferPtr = iBuffer;
int16_t* qBufferPtr = qBuffer;
__m128i iMoveMask = _mm_set_epi8(0x80,
0x80,
0x80,
0x80,
0x80,
0x80,
0x80,
0x80,
14,
12,
10,
8,
6,
4,
2,
0); // set 16 byte values
__m128i qMoveMask = _mm_set_epi8(
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 15, 13, 11, 9, 7, 5, 3, 1);
__m128i complexVal, iOutputVal, qOutputVal;
unsigned int eighthPoints = num_points / 8;
for (number = 0; number < eighthPoints; number++) {
complexVal = _mm_load_si128((__m128i*)complexVectorPtr);
complexVectorPtr += 16; // aligned load
iOutputVal = _mm_shuffle_epi8(complexVal,
iMoveMask); // shuffle 16 bytes of 128bit complexVal
qOutputVal = _mm_shuffle_epi8(complexVal, qMoveMask);
iOutputVal = _mm_cvtepi8_epi16(iOutputVal); // fills 2-byte sign extended versions
// of lower 8 bytes of input to output
iOutputVal =
_mm_slli_epi16(iOutputVal, 8); // shift in left by 8 bits, each of the 8
// 16-bit integers, shift in with zeros
qOutputVal = _mm_cvtepi8_epi16(qOutputVal);
qOutputVal = _mm_slli_epi16(qOutputVal, 8);
_mm_store_si128((__m128i*)iBufferPtr, iOutputVal); // aligned store
_mm_store_si128((__m128i*)qBufferPtr, qOutputVal);
iBufferPtr += 8;
qBufferPtr += 8;
}
number = eighthPoints * 8;
for (; number < num_points; number++) {
*iBufferPtr++ =
((int16_t)*complexVectorPtr++) *
256; // load 8 bit Complexvector into 16 bit, shift left by 8 bits and store
*qBufferPtr++ = ((int16_t)*complexVectorPtr++) * 256;
}
}
#endif /* LV_HAVE_SSE4_1 */
#ifdef LV_HAVE_AVX
#include <immintrin.h>
static inline void volk_8ic_deinterleave_16i_x2_a_avx(int16_t* iBuffer,
int16_t* qBuffer,
const lv_8sc_t* complexVector,
unsigned int num_points)
{
unsigned int number = 0;
const int8_t* complexVectorPtr = (int8_t*)complexVector;
int16_t* iBufferPtr = iBuffer;
int16_t* qBufferPtr = qBuffer;
__m128i iMoveMask = _mm_set_epi8(0x80,
0x80,
0x80,
0x80,
0x80,
0x80,
0x80,
0x80,
14,
12,
10,
8,
6,
4,
2,
0); // set 16 byte values
__m128i qMoveMask = _mm_set_epi8(
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 15, 13, 11, 9, 7, 5, 3, 1);
__m256i complexVal, iOutputVal, qOutputVal;
__m128i complexVal1, complexVal0;
__m128i iOutputVal1, iOutputVal0, qOutputVal1, qOutputVal0;
unsigned int sixteenthPoints = num_points / 16;
for (number = 0; number < sixteenthPoints; number++) {
complexVal = _mm256_load_si256((__m256i*)complexVectorPtr);
complexVectorPtr += 32; // aligned load
// Extract from complexVal to iOutputVal and qOutputVal
complexVal1 = _mm256_extractf128_si256(complexVal, 1);
complexVal0 = _mm256_extractf128_si256(complexVal, 0);
iOutputVal1 = _mm_shuffle_epi8(
complexVal1, iMoveMask); // shuffle 16 bytes of 128bit complexVal
iOutputVal0 = _mm_shuffle_epi8(complexVal0, iMoveMask);
qOutputVal1 = _mm_shuffle_epi8(complexVal1, qMoveMask);
qOutputVal0 = _mm_shuffle_epi8(complexVal0, qMoveMask);
iOutputVal1 =
_mm_cvtepi8_epi16(iOutputVal1); // fills 2-byte sign extended versions of
// lower 8 bytes of input to output
iOutputVal1 =
_mm_slli_epi16(iOutputVal1, 8); // shift in left by 8 bits, each of the 8
// 16-bit integers, shift in with zeros
iOutputVal0 = _mm_cvtepi8_epi16(iOutputVal0);
iOutputVal0 = _mm_slli_epi16(iOutputVal0, 8);
qOutputVal1 = _mm_cvtepi8_epi16(qOutputVal1);
qOutputVal1 = _mm_slli_epi16(qOutputVal1, 8);
qOutputVal0 = _mm_cvtepi8_epi16(qOutputVal0);
qOutputVal0 = _mm_slli_epi16(qOutputVal0, 8);
// Pack iOutputVal0,1 to iOutputVal
__m256i dummy = _mm256_setzero_si256();
iOutputVal = _mm256_insertf128_si256(dummy, iOutputVal0, 0);
iOutputVal = _mm256_insertf128_si256(iOutputVal, iOutputVal1, 1);
qOutputVal = _mm256_insertf128_si256(dummy, qOutputVal0, 0);
qOutputVal = _mm256_insertf128_si256(qOutputVal, qOutputVal1, 1);
_mm256_store_si256((__m256i*)iBufferPtr, iOutputVal); // aligned store
_mm256_store_si256((__m256i*)qBufferPtr, qOutputVal);
iBufferPtr += 16;
qBufferPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
*iBufferPtr++ =
((int16_t)*complexVectorPtr++) *
256; // load 8 bit Complexvector into 16 bit, shift left by 8 bits and store
*qBufferPtr++ = ((int16_t)*complexVectorPtr++) * 256;
}
}
#endif /* LV_HAVE_AVX */
#ifdef LV_HAVE_GENERIC
static inline void volk_8ic_deinterleave_16i_x2_generic(int16_t* iBuffer,
int16_t* qBuffer,
const lv_8sc_t* complexVector,
unsigned int num_points)
{
const int8_t* complexVectorPtr = (const int8_t*)complexVector;
int16_t* iBufferPtr = iBuffer;
int16_t* qBufferPtr = qBuffer;
unsigned int number;
for (number = 0; number < num_points; number++) {
*iBufferPtr++ = (int16_t)(*complexVectorPtr++) * 256;
*qBufferPtr++ = (int16_t)(*complexVectorPtr++) * 256;
}
}
#endif /* LV_HAVE_GENERIC */
#endif /* INCLUDED_volk_8ic_deinterleave_16i_x2_a_H */
#ifndef INCLUDED_volk_8ic_deinterleave_16i_x2_u_H
#define INCLUDED_volk_8ic_deinterleave_16i_x2_u_H
#include <inttypes.h>
#include <stdio.h>
#ifdef LV_HAVE_AVX2
#include <immintrin.h>
static inline void volk_8ic_deinterleave_16i_x2_u_avx2(int16_t* iBuffer,
int16_t* qBuffer,
const lv_8sc_t* complexVector,
unsigned int num_points)
{
unsigned int number = 0;
const int8_t* complexVectorPtr = (int8_t*)complexVector;
int16_t* iBufferPtr = iBuffer;
int16_t* qBufferPtr = qBuffer;
__m256i MoveMask = _mm256_set_epi8(15,
13,
11,
9,
7,
5,
3,
1,
14,
12,
10,
8,
6,
4,
2,
0,
15,
13,
11,
9,
7,
5,
3,
1,
14,
12,
10,
8,
6,
4,
2,
0);
__m256i complexVal, iOutputVal, qOutputVal;
__m128i iOutputVal0, qOutputVal0;
unsigned int sixteenthPoints = num_points / 16;
for (number = 0; number < sixteenthPoints; number++) {
complexVal = _mm256_loadu_si256((__m256i*)complexVectorPtr);
complexVectorPtr += 32;
complexVal = _mm256_shuffle_epi8(complexVal, MoveMask);
complexVal = _mm256_permute4x64_epi64(complexVal, 0xd8);
iOutputVal0 = _mm256_extracti128_si256(complexVal, 0);
qOutputVal0 = _mm256_extracti128_si256(complexVal, 1);
iOutputVal = _mm256_cvtepi8_epi16(iOutputVal0);
iOutputVal = _mm256_slli_epi16(iOutputVal, 8);
qOutputVal = _mm256_cvtepi8_epi16(qOutputVal0);
qOutputVal = _mm256_slli_epi16(qOutputVal, 8);
_mm256_storeu_si256((__m256i*)iBufferPtr, iOutputVal);
_mm256_storeu_si256((__m256i*)qBufferPtr, qOutputVal);
iBufferPtr += 16;
qBufferPtr += 16;
}
number = sixteenthPoints * 16;
for (; number < num_points; number++) {
*iBufferPtr++ =
((int16_t)*complexVectorPtr++) *
256; // load 8 bit Complexvector into 16 bit, shift left by 8 bits and store
*qBufferPtr++ = ((int16_t)*complexVectorPtr++) * 256;
}
}
#endif /* LV_HAVE_AVX2 */
#ifdef LV_HAVE_NEON
#include <arm_neon.h>
static inline void volk_8ic_deinterleave_16i_x2_neon(int16_t* iBuffer,
int16_t* qBuffer,
const lv_8sc_t* complexVector,
unsigned int num_points)
{
unsigned int number = 0;
const unsigned int eighth_points = num_points / 8;
const int8_t* complexVectorPtr = (const int8_t*)complexVector;
int16_t* iBufferPtr = iBuffer;
int16_t* qBufferPtr = qBuffer;
for (; number < eighth_points; number++) {
int8x8x2_t input = vld2_s8(complexVectorPtr);
complexVectorPtr += 16;
int16x8_t iVal = vshll_n_s8(input.val[0], 8);
int16x8_t qVal = vshll_n_s8(input.val[1], 8);
vst1q_s16(iBufferPtr, iVal);
vst1q_s16(qBufferPtr, qVal);
iBufferPtr += 8;
qBufferPtr += 8;
}
number = eighth_points * 8;
for (; number < num_points; number++) {
*iBufferPtr++ = ((int16_t)*complexVectorPtr++) * 256;
*qBufferPtr++ = ((int16_t)*complexVectorPtr++) * 256;
}
}
#endif /* LV_HAVE_NEON */
#ifdef LV_HAVE_RVV
#include <riscv_vector.h>
static inline void volk_8ic_deinterleave_16i_x2_rvv(int16_t* iBuffer,
int16_t* qBuffer,
const lv_8sc_t* complexVector,
unsigned int num_points)
{
const uint16_t* in = (const uint16_t*)complexVector;
size_t n = num_points;
for (size_t vl; n > 0; n -= vl, in += vl, iBuffer += vl, qBuffer += vl) {
vl = __riscv_vsetvl_e16m8(n);
vuint16m8_t vc = __riscv_vle16_v_u16m8(in, vl);
vuint16m8_t vr = __riscv_vsll(vc, 8, vl);
vuint16m8_t vi = __riscv_vand(vc, 0xFF00, vl);
__riscv_vse16((uint16_t*)iBuffer, vr, vl);
__riscv_vse16((uint16_t*)qBuffer, vi, vl);
}
}
#endif /*LV_HAVE_RVV*/
#endif /* INCLUDED_volk_8ic_deinterleave_16i_x2_u_H */