Commit 67c38c92 authored by Linfeng Zhang's avatar Linfeng Zhang

Add transpose_8bit_{4x4,8x8}() x86 optimization

Change-Id: Ic369dd86b3b81686f68fbc13ad34ab8ea8846878
parent fe7b8691
......@@ -11,7 +11,86 @@
#ifndef VPX_DSP_X86_TRANSPOSE_SSE2_H_
#define VPX_DSP_X86_TRANSPOSE_SSE2_H_
#include "./vpx_dsp_rtcd.h"
#include <emmintrin.h> // SSE2
#include "./vpx_config.h"
static INLINE __m128i transpose_8bit_4x4(const __m128i *const in) {
// Unpack 16 bit elements. Goes from:
// in[0]: 00 01 02 03
// in[1]: 10 11 12 13
// in[2]: 20 21 22 23
// in[3]: 30 31 32 33
// to:
// a0: 00 10 01 11 02 12 03 13
// a1: 20 30 21 31 22 32 23 33
const __m128i a0 = _mm_unpacklo_epi8(in[0], in[1]);
const __m128i a1 = _mm_unpacklo_epi8(in[2], in[3]);
// Unpack 32 bit elements resulting in:
// 00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33
return _mm_unpacklo_epi16(a0, a1);
}
static INLINE void transpose_8bit_8x8(const __m128i *const in,
__m128i *const out) {
// Unpack 8 bit elements. Goes from:
// in[0]: 00 01 02 03 04 05 06 07
// in[1]: 10 11 12 13 14 15 16 17
// in[2]: 20 21 22 23 24 25 26 27
// in[3]: 30 31 32 33 34 35 36 37
// in[4]: 40 41 42 43 44 45 46 47
// in[5]: 50 51 52 53 54 55 56 57
// in[6]: 60 61 62 63 64 65 66 67
// in[7]: 70 71 72 73 74 75 76 77
// to:
// a0: 00 10 01 11 02 12 03 13 04 14 05 15 06 16 07 17
// a1: 20 30 21 31 22 32 23 33 24 34 25 35 26 36 27 37
// a2: 40 50 41 51 42 52 43 53 44 54 45 55 46 56 47 57
// a3: 60 70 61 71 62 72 63 73 64 74 65 75 66 76 67 77
const __m128i a0 = _mm_unpacklo_epi8(in[0], in[1]);
const __m128i a1 = _mm_unpacklo_epi8(in[2], in[3]);
const __m128i a2 = _mm_unpacklo_epi8(in[4], in[5]);
const __m128i a3 = _mm_unpacklo_epi8(in[6], in[7]);
// Unpack 16 bit elements resulting in:
// b0: 00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33
// b1: 40 50 60 70 41 51 61 71 42 52 62 72 43 53 63 73
// b2: 04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37
// b3: 44 54 64 74 45 55 65 75 46 56 66 76 47 57 67 77
const __m128i b0 = _mm_unpacklo_epi16(a0, a1);
const __m128i b1 = _mm_unpackhi_epi16(a0, a1);
const __m128i b2 = _mm_unpacklo_epi16(a2, a3);
const __m128i b3 = _mm_unpackhi_epi16(a2, a3);
// Unpack 32 bit elements resulting in:
// c0: 00 10 20 30 40 50 60 70 01 11 21 31 41 51 61 71
// c1: 02 12 22 32 42 52 62 72 03 13 23 33 43 53 63 73
// c2: 04 14 24 34 44 54 64 74 05 15 25 35 45 55 65 75
// c3: 06 16 26 36 46 56 66 76 07 17 27 37 47 57 67 77
const __m128i c0 = _mm_unpacklo_epi32(b0, b2);
const __m128i c1 = _mm_unpackhi_epi32(b0, b2);
const __m128i c2 = _mm_unpacklo_epi32(b1, b3);
const __m128i c3 = _mm_unpackhi_epi32(b1, b3);
// Unpack 64 bit elements resulting in:
// out[0]: 00 10 20 30 40 50 60 70
// out[1]: 01 11 21 31 41 51 61 71
// out[2]: 02 12 22 32 42 52 62 72
// out[3]: 03 13 23 33 43 53 63 73
// out[4]: 04 14 24 34 44 54 64 74
// out[5]: 05 15 25 35 45 55 65 75
// out[6]: 06 16 26 36 46 56 66 76
// out[7]: 07 17 27 37 47 57 67 77
out[0] = _mm_unpacklo_epi64(c0, c0);
out[1] = _mm_unpackhi_epi64(c0, c0);
out[2] = _mm_unpacklo_epi64(c1, c1);
out[3] = _mm_unpackhi_epi64(c1, c1);
out[4] = _mm_unpacklo_epi64(c2, c2);
out[5] = _mm_unpackhi_epi64(c2, c2);
out[6] = _mm_unpacklo_epi64(c3, c3);
out[7] = _mm_unpackhi_epi64(c3, c3);
}
static INLINE void transpose_16bit_4x4(const __m128i *const in,
__m128i *const out) {
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment