ref: 8c0ab7607e14cf63eb56a3f92b971100b4c9ef31
parent: 6738ad7aafd8c62ae7c421d9ec494714d5d99409
author: Linfeng Zhang <linfengz@google.com>
date: Wed Aug 2 12:15:58 EDT 2017
Add transpose_32bit_8x4() sse2 optimization Change-Id: I66297d78b38db718cfe3ebb8ea972f5a72c17955
--- a/vpx_dsp/x86/transpose_sse2.h
+++ b/vpx_dsp/x86/transpose_sse2.h
@@ -237,4 +237,52 @@
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_