Commit 8c0ab760 authored by Linfeng Zhang's avatar Linfeng Zhang
Browse files

Add transpose_32bit_8x4() sse2 optimization

Change-Id: I66297d78b38db718cfe3ebb8ea972f5a72c17955
parent 6738ad7a
......@@ -237,4 +237,52 @@ static INLINE void transpose_32bit_4x4x2(const __m128i *const in,
out[7] = _mm_unpackhi_epi64(a6, a7);
}
static INLINE void transpose_32bit_8x4(const __m128i *const in,
__m128i *const out) {
// Unpack 32 bit elements. Goes from:
// in[0]: 00 01 02 03
// in[1]: 04 05 06 07
// in[2]: 10 11 12 13
// in[3]: 14 15 16 17
// in[4]: 20 21 22 23
// in[5]: 24 25 26 27
// in[6]: 30 31 32 33
// in[7]: 34 35 36 37
// to:
// a0: 00 10 01 11
// a1: 20 30 21 31
// a2: 02 12 03 13
// a3: 22 32 23 33
// a4: 04 14 05 15
// a5: 24 34 25 35
// a6: 06 16 07 17
// a7: 26 36 27 37
const __m128i a0 = _mm_unpacklo_epi32(in[0], in[2]);
const __m128i a1 = _mm_unpacklo_epi32(in[4], in[6]);
const __m128i a2 = _mm_unpackhi_epi32(in[0], in[2]);
const __m128i a3 = _mm_unpackhi_epi32(in[4], in[6]);
const __m128i a4 = _mm_unpacklo_epi32(in[1], in[3]);
const __m128i a5 = _mm_unpacklo_epi32(in[5], in[7]);
const __m128i a6 = _mm_unpackhi_epi32(in[1], in[3]);
const __m128i a7 = _mm_unpackhi_epi32(in[5], in[7]);
// Unpack 64 bit elements resulting in:
// out[0]: 00 10 20 30
// out[1]: 01 11 21 31
// out[2]: 02 12 22 32
// out[3]: 03 13 23 33
// out[4]: 04 14 24 34
// out[5]: 05 15 25 35
// out[6]: 06 16 26 36
// out[7]: 07 17 27 37
out[0] = _mm_unpacklo_epi64(a0, a1);
out[1] = _mm_unpackhi_epi64(a0, a1);
out[2] = _mm_unpacklo_epi64(a2, a3);
out[3] = _mm_unpackhi_epi64(a2, a3);
out[4] = _mm_unpacklo_epi64(a4, a5);
out[5] = _mm_unpackhi_epi64(a4, a5);
out[6] = _mm_unpacklo_epi64(a6, a7);
out[7] = _mm_unpackhi_epi64(a6, a7);
}
#endif // VPX_DSP_X86_TRANSPOSE_SSE2_H_
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