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Exchange1 with generic version for now, should use svtbl2 in final version

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nils meyer 2020-04-20 22:45:27 +02:00
parent 64b72fc17f
commit e54a8f05a9
1 changed files with 25 additions and 0 deletions
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25
Grid/simd/Grid_a64fx-2.h
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@ -592,6 +592,8 @@ struct Exchange{
}
/* FIXME use svcreate etc. or switch to table lookup directly
template <typename T>
static inline void Exchange1(vec<T> &out1, vec<T> &out2, const vec<T> &in1, const vec<T> &in2){
@ -611,6 +613,29 @@ struct Exchange{
svst4(pg4, (typename acle<double>::pt*)out1.v, out1_v4);
svst4(pg4, (typename acle<double>::pt*)out2.v, out2_v4);
}
*/
#define VECTOR_FOR(i, w, inc) \
for (unsigned int i = 0; i < w; i += inc)
template <typename T>
static inline void Exchange1(vec<T> &out1, vec<T> &out2, const vec<T> &in1, const vec<T> &in2){
// FIXME
const int n = 1;
const int w = W<T>::r;
unsigned int mask = w >> (n + 1);
// std::cout << " Exchange "<<n<<" nsimd "<<w<<" mask 0x" <<std::hex<<mask<<std::dec<<std::endl;
VECTOR_FOR(i, w, 1) {
int j1 = i&(~mask);
if ( (i&mask) == 0 ) { out1.v[i]=in1.v[j1];}
else { out1.v[i]=in2.v[j1];}
int j2 = i|mask;
if ( (i&mask) == 0 ) { out2.v[i]=in1.v[j2];}
else { out2.v[i]=in2.v[j2];}
}
}
#undef VECTOR_FOR
template <typename T>
static inline void Exchange2(vec<T> &out1, vec<T> &out2, const vec<T> &in1, const vec<T> &in2){