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Vectorise the XYZT face gathering better.

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Hard coded for simd_layout <= 2 in any given spread out direction; full generality is inconsistent
with efficiency.
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paboyle
2017-02-15 11:11:04 +00:00
parent aca7a3ef0a
commit bd600702cf
10 changed files with 510 additions and 34 deletions
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40
lib/simd/Grid_avx.h
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@ -469,9 +469,47 @@ namespace Optimization {
static inline __m256d Permute3(__m256d in){
return in;
};
};
struct Exchange{
// 3210 ordering
static inline void Exchange0(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
out1= _mm256_permute2f128_ps(in1,in2,0x20);
out2= _mm256_permute2f128_ps(in1,in2,0x31);
};
static inline void Exchange1(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
out1= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(1,0,1,0));
out2= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(3,2,3,2));
};
static inline void Exchange2(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
out1= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(2,0,2,0));
out2= _mm256_shuffle_ps(in1,in2,_MM_SELECT_FOUR_FOUR(3,1,3,1));
};
static inline void Exchange3(__m256 &out1,__m256 &out2,__m256 in1,__m256 in2){
assert(0);
return;
};
static inline void Exchange0(__m256d &out1,__m256d &out2,__m256d in1,__m256d in2){
out1= _mm256_permute2f128_pd(in1,in2,0x20);
out2= _mm256_permute2f128_pd(in1,in2,0x31);
return;
};
static inline void Exchange1(__m256d &out1,__m256d &out2,__m256d in1,__m256d in2){
out1= _mm256_shuffle_pd(in1,in2,0x0);
out2= _mm256_shuffle_pd(in1,in2,0xF);
};
static inline void Exchange2(__m256d &out1,__m256d &out2,__m256d in1,__m256d in2){
assert(0);
return;
};
static inline void Exchange3(__m256d &out1,__m256d &out2,__m256d in1,__m256d in2){
assert(0);
return;
};
};
#if defined (AVX2)
#define _mm256_alignr_epi32_grid(ret,a,b,n) ret=(__m256) _mm256_alignr_epi8((__m256i)a,(__m256i)b,(n*4)%16)
#define _mm256_alignr_epi64_grid(ret,a,b,n) ret=(__m256d) _mm256_alignr_epi8((__m256i)a,(__m256i)b,(n*8)%16)