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impl.c
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impl.c
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#ifndef TRANSPOSE_IMPL
#define TRANSPOSE_IMPL
void naive_transpose(int *src, int *dst, int w, int h)
{
for (int x = 0; x < w; x++)
for (int y = 0; y < h; y++)
*(dst + x * h + y) = *(src + y * w + x);
}
void sse_transpose(int *src, int *dst, int w, int h)
{
for (int x = 0; x < w; x += 4) {
for (int y = 0; y < h; y += 4) {
__m128i I0 = _mm_loadu_si128((__m128i *)(src + (y + 0) * w + x));
__m128i I1 = _mm_loadu_si128((__m128i *)(src + (y + 1) * w + x));
__m128i I2 = _mm_loadu_si128((__m128i *)(src + (y + 2) * w + x));
__m128i I3 = _mm_loadu_si128((__m128i *)(src + (y + 3) * w + x));
__m128i T0 = _mm_unpacklo_epi32(I0, I1);
__m128i T1 = _mm_unpacklo_epi32(I2, I3);
__m128i T2 = _mm_unpackhi_epi32(I0, I1);
__m128i T3 = _mm_unpackhi_epi32(I2, I3);
I0 = _mm_unpacklo_epi64(T0, T1);
I1 = _mm_unpackhi_epi64(T0, T1);
I2 = _mm_unpacklo_epi64(T2, T3);
I3 = _mm_unpackhi_epi64(T2, T3);
_mm_storeu_si128((__m128i *)(dst + ((x + 0) * h) + y), I0);
_mm_storeu_si128((__m128i *)(dst + ((x + 1) * h) + y), I1);
_mm_storeu_si128((__m128i *)(dst + ((x + 2) * h) + y), I2);
_mm_storeu_si128((__m128i *)(dst + ((x + 3) * h) + y), I3);
}
}
}
void sse_prefetch_transpose(int *src, int *dst, int w, int h)
{
for (int x = 0; x < w; x += 4) {
for (int y = 0; y < h; y += 4) {
#define PFDIST 8
_mm_prefetch(src+(y + PFDIST + 0) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST + 1) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST + 2) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST + 3) *w + x, _MM_HINT_T1);
__m128i I0 = _mm_loadu_si128 ((__m128i *)(src + (y + 0) * w + x));
__m128i I1 = _mm_loadu_si128 ((__m128i *)(src + (y + 1) * w + x));
__m128i I2 = _mm_loadu_si128 ((__m128i *)(src + (y + 2) * w + x));
__m128i I3 = _mm_loadu_si128 ((__m128i *)(src + (y + 3) * w + x));
__m128i T0 = _mm_unpacklo_epi32(I0, I1);
__m128i T1 = _mm_unpacklo_epi32(I2, I3);
__m128i T2 = _mm_unpackhi_epi32(I0, I1);
__m128i T3 = _mm_unpackhi_epi32(I2, I3);
I0 = _mm_unpacklo_epi64(T0, T1);
I1 = _mm_unpackhi_epi64(T0, T1);
I2 = _mm_unpacklo_epi64(T2, T3);
I3 = _mm_unpackhi_epi64(T2, T3);
_mm_storeu_si128((__m128i *)(dst + ((x + 0) * h) + y), I0);
_mm_storeu_si128((__m128i *)(dst + ((x + 1) * h) + y), I1);
_mm_storeu_si128((__m128i *)(dst + ((x + 2) * h) + y), I2);
_mm_storeu_si128((__m128i *)(dst + ((x + 3) * h) + y), I3);
}
}
}
void avx_transpose(int *src, int *dst, int w, int h)
{
for (int x = 0; x < w; x += 8) {
for (int y = 0; y < h; y += 8) {
__m256i I0 = _mm256_loadu_si256((__m256i *)(src + (y + 0) * w + x));
__m256i I1 = _mm256_loadu_si256((__m256i *)(src + (y + 1) * w + x));
__m256i I2 = _mm256_loadu_si256((__m256i *)(src + (y + 2) * w + x));
__m256i I3 = _mm256_loadu_si256((__m256i *)(src + (y + 3) * w + x));
__m256i I4 = _mm256_loadu_si256((__m256i *)(src + (y + 4) * w + x));
__m256i I5 = _mm256_loadu_si256((__m256i *)(src + (y + 5) * w + x));
__m256i I6 = _mm256_loadu_si256((__m256i *)(src + (y + 6) * w + x));
__m256i I7 = _mm256_loadu_si256((__m256i *)(src + (y + 7) * w + x));
__m256i T0 = _mm256_unpacklo_epi32(I0, I1);
__m256i T1 = _mm256_unpacklo_epi32(I2, I3);
__m256i T2 = _mm256_unpacklo_epi32(I4, I5);
__m256i T3 = _mm256_unpacklo_epi32(I6, I7);
__m256i T4 = _mm256_unpackhi_epi32(I0, I1);
__m256i T5 = _mm256_unpackhi_epi32(I2, I3);
__m256i T6 = _mm256_unpackhi_epi32(I4, I5);
__m256i T7 = _mm256_unpackhi_epi32(I6, I7);
I0 = _mm256_unpacklo_epi64(T0, T1);
I1 = _mm256_unpackhi_epi64(T0, T1);
I2 = _mm256_unpacklo_epi64(T2, T3);
I3 = _mm256_unpackhi_epi64(T2, T3);
I4 = _mm256_unpacklo_epi64(T4, T5);
I5 = _mm256_unpackhi_epi64(T4, T5);
I6 = _mm256_unpacklo_epi64(T6, T7);
I7 = _mm256_unpackhi_epi64(T6, T7);
_mm256_storeu_si256((__m256i *)(dst + ((x + 0) * h) + y), I0);
_mm256_storeu_si256((__m256i *)(dst + ((x + 1) * h) + y), I1);
_mm256_storeu_si256((__m256i *)(dst + ((x + 2) * h) + y), I2);
_mm256_storeu_si256((__m256i *)(dst + ((x + 3) * h) + y), I3);
_mm256_storeu_si256((__m256i *)(dst + ((x + 4) * h) + y), I4);
_mm256_storeu_si256((__m256i *)(dst + ((x + 5) * h) + y), I5);
_mm256_storeu_si256((__m256i *)(dst + ((x + 6) * h) + y), I6);
_mm256_storeu_si256((__m256i *)(dst + ((x + 7) * h) + y), I7);
}
}
}
void avx_prefetch_transpose(int *src, int *dst, int w, int h)
{
for (int x = 0; x < w; x += 8) {
for (int y = 0; y < h; y += 8) {
#define PFDIST_AVX 8
_mm_prefetch(src+(y + PFDIST_AVX + 0) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST_AVX + 1) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST_AVX + 2) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST_AVX + 3) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST_AVX + 4) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST_AVX + 5) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST_AVX + 6) *w + x, _MM_HINT_T1);
_mm_prefetch(src+(y + PFDIST_AVX + 7) *w + x, _MM_HINT_T1);
__m256i I0 = _mm256_loadu_si256((__m256i *)(src + (y + 0) * w + x));
__m256i I1 = _mm256_loadu_si256((__m256i *)(src + (y + 1) * w + x));
__m256i I2 = _mm256_loadu_si256((__m256i *)(src + (y + 2) * w + x));
__m256i I3 = _mm256_loadu_si256((__m256i *)(src + (y + 3) * w + x));
__m256i I4 = _mm256_loadu_si256((__m256i *)(src + (y + 4) * w + x));
__m256i I5 = _mm256_loadu_si256((__m256i *)(src + (y + 5) * w + x));
__m256i I6 = _mm256_loadu_si256((__m256i *)(src + (y + 6) * w + x));
__m256i I7 = _mm256_loadu_si256((__m256i *)(src + (y + 7) * w + x));
__m256i T0 = _mm256_unpacklo_epi32(I0, I1);
__m256i T1 = _mm256_unpacklo_epi32(I2, I3);
__m256i T2 = _mm256_unpacklo_epi32(I4, I5);
__m256i T3 = _mm256_unpacklo_epi32(I6, I7);
__m256i T4 = _mm256_unpackhi_epi32(I0, I1);
__m256i T5 = _mm256_unpackhi_epi32(I2, I3);
__m256i T6 = _mm256_unpackhi_epi32(I4, I5);
__m256i T7 = _mm256_unpackhi_epi32(I6, I7);
I0 = _mm256_unpacklo_epi64(T0, T1);
I1 = _mm256_unpackhi_epi64(T0, T1);
I2 = _mm256_unpacklo_epi64(T2, T3);
I3 = _mm256_unpackhi_epi64(T2, T3);
I4 = _mm256_unpacklo_epi64(T4, T5);
I5 = _mm256_unpackhi_epi64(T4, T5);
I6 = _mm256_unpacklo_epi64(T6, T7);
I7 = _mm256_unpackhi_epi64(T6, T7);
_mm256_storeu_si256((__m256i *)(dst + ((x + 0) * h) + y), I0);
_mm256_storeu_si256((__m256i *)(dst + ((x + 1) * h) + y), I1);
_mm256_storeu_si256((__m256i *)(dst + ((x + 2) * h) + y), I2);
_mm256_storeu_si256((__m256i *)(dst + ((x + 3) * h) + y), I3);
_mm256_storeu_si256((__m256i *)(dst + ((x + 4) * h) + y), I4);
_mm256_storeu_si256((__m256i *)(dst + ((x + 5) * h) + y), I5);
_mm256_storeu_si256((__m256i *)(dst + ((x + 6) * h) + y), I6);
_mm256_storeu_si256((__m256i *)(dst + ((x + 7) * h) + y), I7);
}
}
}
#endif /* TRANSPOSE_IMPL */