mirrors/gnss-sdr
1
0
Fork 0
mirror of https://github.com/gnss-sdr/gnss-sdr synced 2024-12-14 20:20:35 +00:00
Code Issues Releases Wiki Activity

prefetch data in the cache in neon implementation

Browse Source 
8% of average improvement
This commit is contained in:
Carles Fernandez 2016-01-31 10:41:51 +01:00
parent 8a6c4d767f
commit f4875012df
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_s32fc_x2_rotator_16ic.h
View File

@ -290,7 +290,9 @@ static inline void volk_gnsssdr_16ic_s32fc_x2_rotator_16ic_neon(lv_16sc_t* outVe
for(; i < neon_iters; ++i) for(; i < neon_iters; ++i)
{ {
/* load 4 complex numbers (int 16 bits each component) */ /* load 4 complex numbers (int 16 bits each component) */
tmp16 = vld2_s16((int16_t*)_in); _in += 4; tmp16 = vld2_s16((int16_t*)_in);
__builtin_prefetch(_in + 8);
_in += 4;
/* promote them to int 32 bits */ /* promote them to int 32 bits */
tmp32i.val[0] = vmovl_s16(tmp16.val[0]); tmp32i.val[0] = vmovl_s16(tmp16.val[0]);