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srsLTE
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Implemented SSE bit pack vector

This commit is contained in:
Xavier Arteaga 2020-04-12 19:56:32 +02:00 committed by Xavier Arteaga
parent 24466fd242
commit 375ac1388a
1 changed files with 16 additions and 0 deletions
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16
lib/src/phy/utils/bit.c
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@ -740,9 +740,25 @@ void srslte_bit_pack_vector(uint8_t* unpacked, uint8_t* packed, int nof_bits)
{
uint32_t i, nbytes;
nbytes = nof_bits / 8;
#ifdef LV_HAVE_SSE
for (i = 0; i < nbytes; i++) {
// Get 8 Bit
__m64 mask = _mm_cmpgt_pi8(*((__m64*)unpacked), _mm_set1_pi8(0));
unpacked += 8;
// Reverse
mask = _mm_shuffle_pi8(mask, _mm_set_pi8(0, 1, 2, 3, 4, 5, 6, 7));
// Get mask and write
packed[i] = (uint8_t)_mm_movemask_pi8(mask);
}
#else /* LV_HAVE_SSE */
for (i = 0; i < nbytes; i++) {
packed[i] = srslte_bit_pack(&unpacked, 8);
}
#endif /* LV_HAVE_SSE */
if (nof_bits % 8) {
packed[i] = srslte_bit_pack(&unpacked, nof_bits % 8);
packed[i] <<= 8 - (nof_bits % 8);