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Merge pull request #124 from nmeyer-ur/feature/arm-neon

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Added integer reduce functionality
This commit is contained in:
Guido Cossu 2017-09-08 10:54:35 +02:00 committed by GitHub
commit 1184ed29ae
1 changed files with 18 additions and 25 deletions
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43
lib/simd/Grid_neon.h
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@ -82,11 +82,11 @@ namespace Optimization {
double tmp[2]={a,b};
return vld1q_f64(tmp);
}
//Real double // N:tbc
//Real double
inline float64x2_t operator()(double a){
return vdupq_n_f64(a);
}
//Integer // N:tbc
//Integer
inline uint32x4_t operator()(Integer a){
return vdupq_n_u32(a);
}
@ -124,33 +124,32 @@ namespace Optimization {
// Nils: Vset untested; not used currently in Grid at all;
// git commit 4a8c4ccfba1d05159348d21a9698028ea847e77b
struct Vset{
// Complex float // N:ok
// Complex float
inline float32x4_t operator()(Grid::ComplexF *a){
float tmp[4]={a[1].imag(),a[1].real(),a[0].imag(),a[0].real()};
return vld1q_f32(tmp);
}
// Complex double // N:ok
// Complex double
inline float64x2_t operator()(Grid::ComplexD *a){
double tmp[2]={a[0].imag(),a[0].real()};
return vld1q_f64(tmp);
}
// Real float // N:ok
// Real float
inline float32x4_t operator()(float *a){
float tmp[4]={a[3],a[2],a[1],a[0]};
return vld1q_f32(tmp);
}
// Real double // N:ok
// Real double
inline float64x2_t operator()(double *a){
double tmp[2]={a[1],a[0]};
return vld1q_f64(tmp);
}
// Integer // N:ok
// Integer
inline uint32x4_t operator()(Integer *a){
return vld1q_dup_u32(a);
}
};
// N:leaving as is
template <typename Out_type, typename In_type>
struct Reduce{
//Need templated class to overload output type
@ -249,9 +248,9 @@ namespace Optimization {
return vfmaq_f32(r4, r0, a); // ar*br-ai*bi ai*br+ar*bi ...
// no fma, use mul and add
//float32x4_t r5;
//r5 = vmulq_f32(r0, a);
//return vaddq_f32(r4, r5);
// float32x4_t r5;
// r5 = vmulq_f32(r0, a);
// return vaddq_f32(r4, r5);
}
// Complex double
inline float64x2_t operator()(float64x2_t a, float64x2_t b){
@ -272,9 +271,9 @@ namespace Optimization {
return vfmaq_f64(r4, r0, a); // ar*br-ai*bi ai*br+ar*bi
// no fma, use mul and add
//float64x2_t r5;
//r5 = vmulq_f64(r0, a);
//return vaddq_f64(r4, r5);
// float64x2_t r5;
// r5 = vmulq_f64(r0, a);
// return vaddq_f64(r4, r5);
}
};
@ -421,11 +420,6 @@ namespace Optimization {
}
}
// working, but no restriction on n
// template<int n> static inline float32x4_t tRotate(float32x4_t in){ return vextq_f32(in,in,n); };
// template<int n> static inline float64x2_t tRotate(float64x2_t in){ return vextq_f64(in,in,n); };
// restriction on n
template<int n> static inline float32x4_t tRotate(float32x4_t in){ return vextq_f32(in,in,n%4); };
template<int n> static inline float64x2_t tRotate(float64x2_t in){ return vextq_f64(in,in,n%2); };
@ -441,7 +435,7 @@ namespace Optimization {
sb = vcvt_high_f32_f16(h);
// there is no direct conversion from lower float32x4_t to float64x2_t
// vextq_f16 not supported by clang 3.8 / 4.0 / arm clang
//float16x8_t h1 = vextq_f16(h, h, 4); // correct, but not supported by clang
// float16x8_t h1 = vextq_f16(h, h, 4); // correct, but not supported by clang
// workaround for clang
uint32x4_t h1u = reinterpret_cast<uint32x4_t>(h);
float16x8_t h1 = reinterpret_cast<float16x8_t>(vextq_u32(h1u, h1u, 2));
@ -547,7 +541,7 @@ namespace Optimization {
//Complex double Reduce
template<> // N:by Boyle
template<>
inline Grid::ComplexD Reduce<Grid::ComplexD, float64x2_t>::operator()(float64x2_t in){
u128d conv; conv.v = in;
return Grid::ComplexD(conv.f[0],conv.f[1]);
@ -562,9 +556,7 @@ namespace Optimization {
//Integer Reduce
template<>
inline Integer Reduce<Integer, uint32x4_t>::operator()(uint32x4_t in){
// FIXME unimplemented
printf("Reduce : Missing integer implementation -> FIX\n");
assert(0);
return vaddvq_u32(in);
}
}
@ -603,4 +595,5 @@ namespace Optimization {
typedef Optimization::TimesMinusI TimesMinusISIMD;
typedef Optimization::TimesI TimesISIMD;
}
}