ref: 55805e27863ecb6da9dd96d70131fd1dfec6bca0
parent: caa116c9be96508c18d533dedc95b2df4f8e3812
author: Kyle Siefring <kylesiefring@gmail.com>
date: Sat Oct 14 12:26:35 EDT 2017
Refactor x86/vpx_subpixel_8t_intrin_avx2.c Change-Id: I6539111dfb35a43028e9755785b2e9ea31854305
--- a/vpx_dsp/vpx_dsp.mk
+++ b/vpx_dsp/vpx_dsp.mk
@@ -89,6 +89,7 @@
DSP_SRCS-$(ARCH_X86)$(ARCH_X86_64) += x86/convolve.h
DSP_SRCS-$(ARCH_X86)$(ARCH_X86_64) += x86/vpx_asm_stubs.c
DSP_SRCS-$(HAVE_SSSE3) += x86/convolve_ssse3.h
+DSP_SRCS-$(HAVE_AVX2) += x86/convolve_avx2.h
DSP_SRCS-$(HAVE_SSE2) += x86/vpx_subpixel_8t_sse2.asm
DSP_SRCS-$(HAVE_SSE2) += x86/vpx_subpixel_bilinear_sse2.asm
DSP_SRCS-$(HAVE_SSSE3) += x86/vpx_subpixel_8t_ssse3.asm
--- /dev/null
+++ b/vpx_dsp/x86/convolve_avx2.h
@@ -1,0 +1,99 @@
+/*
+ * Copyright (c) 2017 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VPX_DSP_X86_CONVOLVE_AVX2_H_
+#define VPX_DSP_X86_CONVOLVE_AVX2_H_
+
+#include <immintrin.h> // AVX2
+
+#include "./vpx_config.h"
+
+#if defined(__clang__)
+#if (__clang_major__ > 0 && __clang_major__ < 3) || \
+ (__clang_major__ == 3 && __clang_minor__ <= 3) || \
+ (defined(__APPLE__) && defined(__apple_build_version__) && \
+ ((__clang_major__ == 4 && __clang_minor__ <= 2) || \
+ (__clang_major__ == 5 && __clang_minor__ == 0)))
+#define MM256_BROADCASTSI128_SI256(x) \
+ _mm_broadcastsi128_si256((__m128i const *)&(x))
+#else // clang > 3.3, and not 5.0 on macosx.
+#define MM256_BROADCASTSI128_SI256(x) _mm256_broadcastsi128_si256(x)
+#endif // clang <= 3.3
+#elif defined(__GNUC__)
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 6)
+#define MM256_BROADCASTSI128_SI256(x) \
+ _mm_broadcastsi128_si256((__m128i const *)&(x))
+#elif __GNUC__ == 4 && __GNUC_MINOR__ == 7
+#define MM256_BROADCASTSI128_SI256(x) _mm_broadcastsi128_si256(x)
+#else // gcc > 4.7
+#define MM256_BROADCASTSI128_SI256(x) _mm256_broadcastsi128_si256(x)
+#endif // gcc <= 4.6
+#else // !(gcc || clang)
+#define MM256_BROADCASTSI128_SI256(x) _mm256_broadcastsi128_si256(x)
+#endif // __clang__
+
+static INLINE void shuffle_filter_avx2(const int16_t *const filter,
+ __m256i *const f) {+ const __m256i f_values =
+ MM256_BROADCASTSI128_SI256(_mm_load_si128((const __m128i *)filter));
+ // pack and duplicate the filter values
+ f[0] = _mm256_shuffle_epi8(f_values, _mm256_set1_epi16(0x0200u));
+ f[1] = _mm256_shuffle_epi8(f_values, _mm256_set1_epi16(0x0604u));
+ f[2] = _mm256_shuffle_epi8(f_values, _mm256_set1_epi16(0x0a08u));
+ f[3] = _mm256_shuffle_epi8(f_values, _mm256_set1_epi16(0x0e0cu));
+}
+
+static INLINE __m256i convolve8_16_avx2(const __m256i *const s,
+ const __m256i *const f) {+ // multiply 2 adjacent elements with the filter and add the result
+ const __m256i k_64 = _mm256_set1_epi16(1 << 6);
+ const __m256i x0 = _mm256_maddubs_epi16(s[0], f[0]);
+ const __m256i x1 = _mm256_maddubs_epi16(s[1], f[1]);
+ const __m256i x2 = _mm256_maddubs_epi16(s[2], f[2]);
+ const __m256i x3 = _mm256_maddubs_epi16(s[3], f[3]);
+ // add and saturate the results together
+ const __m256i min_x2x1 = _mm256_min_epi16(x2, x1);
+ const __m256i max_x2x1 = _mm256_max_epi16(x2, x1);
+ __m256i temp = _mm256_adds_epi16(x0, x3);
+ temp = _mm256_adds_epi16(temp, min_x2x1);
+ temp = _mm256_adds_epi16(temp, max_x2x1);
+ // round and shift by 7 bit each 16 bit
+ temp = _mm256_adds_epi16(temp, k_64);
+ temp = _mm256_srai_epi16(temp, 7);
+ return temp;
+}
+
+static INLINE __m128i convolve8_8_avx2(const __m256i *const s,
+ const __m256i *const f) {+ // multiply 2 adjacent elements with the filter and add the result
+ const __m128i k_64 = _mm_set1_epi16(1 << 6);
+ const __m128i x0 = _mm_maddubs_epi16(_mm256_castsi256_si128(s[0]),
+ _mm256_castsi256_si128(f[0]));
+ const __m128i x1 = _mm_maddubs_epi16(_mm256_castsi256_si128(s[1]),
+ _mm256_castsi256_si128(f[1]));
+ const __m128i x2 = _mm_maddubs_epi16(_mm256_castsi256_si128(s[2]),
+ _mm256_castsi256_si128(f[2]));
+ const __m128i x3 = _mm_maddubs_epi16(_mm256_castsi256_si128(s[3]),
+ _mm256_castsi256_si128(f[3]));
+ // add and saturate the results together
+ const __m128i min_x2x1 = _mm_min_epi16(x2, x1);
+ const __m128i max_x2x1 = _mm_max_epi16(x2, x1);
+ __m128i temp = _mm_adds_epi16(x0, x3);
+ temp = _mm_adds_epi16(temp, min_x2x1);
+ temp = _mm_adds_epi16(temp, max_x2x1);
+ // round and shift by 7 bit each 16 bit
+ temp = _mm_adds_epi16(temp, k_64);
+ temp = _mm_srai_epi16(temp, 7);
+ return temp;
+}
+
+#undef MM256_BROADCASTSI128_SI256
+
+#endif // VPX_DSP_X86_CONVOLVE_AVX2_H_
--- a/vpx_dsp/x86/vpx_subpixel_8t_intrin_avx2.c
+++ b/vpx_dsp/x86/vpx_subpixel_8t_intrin_avx2.c
@@ -12,9 +12,10 @@
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/x86/convolve.h"
+#include "vpx_dsp/x86/convolve_avx2.h"
#include "vpx_ports/mem.h"
-// filters for 16_h8 and 16_v8
+// filters for 16_h8
DECLARE_ALIGNED(32, static const uint8_t, filt1_global_avx2[32]) = {0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8,
0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8
@@ -35,160 +36,68 @@
6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14
};
-#if defined(__clang__)
-#if (__clang_major__ > 0 && __clang_major__ < 3) || \
- (__clang_major__ == 3 && __clang_minor__ <= 3) || \
- (defined(__APPLE__) && defined(__apple_build_version__) && \
- ((__clang_major__ == 4 && __clang_minor__ <= 2) || \
- (__clang_major__ == 5 && __clang_minor__ == 0)))
-#define MM256_BROADCASTSI128_SI256(x) \
- _mm_broadcastsi128_si256((__m128i const *)&(x))
-#else // clang > 3.3, and not 5.0 on macosx.
-#define MM256_BROADCASTSI128_SI256(x) _mm256_broadcastsi128_si256(x)
-#endif // clang <= 3.3
-#elif defined(__GNUC__)
-#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 6)
-#define MM256_BROADCASTSI128_SI256(x) \
- _mm_broadcastsi128_si256((__m128i const *)&(x))
-#elif __GNUC__ == 4 && __GNUC_MINOR__ == 7
-#define MM256_BROADCASTSI128_SI256(x) _mm_broadcastsi128_si256(x)
-#else // gcc > 4.7
-#define MM256_BROADCASTSI128_SI256(x) _mm256_broadcastsi128_si256(x)
-#endif // gcc <= 4.6
-#else // !(gcc || clang)
-#define MM256_BROADCASTSI128_SI256(x) _mm256_broadcastsi128_si256(x)
-#endif // __clang__
-
-static INLINE void vpx_filter_block1d16_h8_X_avx2(
+static INLINE void vpx_filter_block1d16_h8_x_avx2(
const uint8_t *src_ptr, ptrdiff_t src_pixels_per_line, uint8_t *output_ptr,
ptrdiff_t output_pitch, uint32_t output_height, const int16_t *filter,
const int avg) {- __m128i filtersReg, outReg1, outReg2;
- __m256i addFilterReg64, filt1Reg, filt2Reg, filt3Reg, filt4Reg;
- __m256i firstFilters, secondFilters, thirdFilters, forthFilters;
- __m256i srcRegFilt32b1_1, srcRegFilt32b2_1, srcRegFilt32b2, srcRegFilt32b3;
- __m256i srcReg32b1, srcReg32b2, filtersReg32;
+ __m128i outReg1, outReg2;
+ __m256i outReg32b1, outReg32b2;
unsigned int i;
ptrdiff_t src_stride, dst_stride;
+ __m256i f[4], filt[4], s[4];
- // create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
- addFilterReg64 = _mm256_set1_epi32((int)0x0400040u);
- filtersReg = _mm_loadu_si128((const __m128i *)filter);
- // converting the 16 bit (short) to 8 bit (byte) and have the same data
- // in both lanes of 128 bit register.
- filtersReg = _mm_packs_epi16(filtersReg, filtersReg);
- // have the same data in both lanes of a 256 bit register
- filtersReg32 = MM256_BROADCASTSI128_SI256(filtersReg);
+ shuffle_filter_avx2(filter, f);
+ filt[0] = _mm256_load_si256((__m256i const *)filt1_global_avx2);
+ filt[1] = _mm256_load_si256((__m256i const *)filt2_global_avx2);
+ filt[2] = _mm256_load_si256((__m256i const *)filt3_global_avx2);
+ filt[3] = _mm256_load_si256((__m256i const *)filt4_global_avx2);
- // duplicate only the first 16 bits (first and second byte)
- // across 256 bit register
- firstFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x100u));
- // duplicate only the second 16 bits (third and forth byte)
- // across 256 bit register
- secondFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x302u));
- // duplicate only the third 16 bits (fifth and sixth byte)
- // across 256 bit register
- thirdFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x504u));
- // duplicate only the forth 16 bits (seventh and eighth byte)
- // across 256 bit register
- forthFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x706u));
-
- filt1Reg = _mm256_load_si256((__m256i const *)filt1_global_avx2);
- filt2Reg = _mm256_load_si256((__m256i const *)filt2_global_avx2);
- filt3Reg = _mm256_load_si256((__m256i const *)filt3_global_avx2);
- filt4Reg = _mm256_load_si256((__m256i const *)filt4_global_avx2);
-
// multiple the size of the source and destination stride by two
src_stride = src_pixels_per_line << 1;
dst_stride = output_pitch << 1;
for (i = output_height; i > 1; i -= 2) {+ __m256i srcReg;
+
// load the 2 strides of source
- srcReg32b1 =
+ srcReg =
_mm256_castsi128_si256(_mm_loadu_si128((const __m128i *)(src_ptr - 3)));
- srcReg32b1 = _mm256_inserti128_si256(
- srcReg32b1,
+ srcReg = _mm256_inserti128_si256(
+ srcReg,
_mm_loadu_si128((const __m128i *)(src_ptr + src_pixels_per_line - 3)),
1);
// filter the source buffer
- srcRegFilt32b1_1 = _mm256_shuffle_epi8(srcReg32b1, filt1Reg);
- srcRegFilt32b2 = _mm256_shuffle_epi8(srcReg32b1, filt4Reg);
+ s[0] = _mm256_shuffle_epi8(srcReg, filt[0]);
+ s[1] = _mm256_shuffle_epi8(srcReg, filt[1]);
+ s[2] = _mm256_shuffle_epi8(srcReg, filt[2]);
+ s[3] = _mm256_shuffle_epi8(srcReg, filt[3]);
+ outReg32b1 = convolve8_16_avx2(s, f);
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt32b1_1 = _mm256_maddubs_epi16(srcRegFilt32b1_1, firstFilters);
- srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, forthFilters);
-
- // add and saturate the results together
- srcRegFilt32b1_1 = _mm256_adds_epi16(srcRegFilt32b1_1, srcRegFilt32b2);
-
- // filter the source buffer
- srcRegFilt32b3 = _mm256_shuffle_epi8(srcReg32b1, filt2Reg);
- srcRegFilt32b2 = _mm256_shuffle_epi8(srcReg32b1, filt3Reg);
-
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt32b3 = _mm256_maddubs_epi16(srcRegFilt32b3, secondFilters);
- srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, thirdFilters);
-
- // add and saturate the results together
- srcRegFilt32b1_1 = _mm256_adds_epi16(
- srcRegFilt32b1_1, _mm256_min_epi16(srcRegFilt32b3, srcRegFilt32b2));
-
// reading 2 strides of the next 16 bytes
// (part of it was being read by earlier read)
- srcReg32b2 =
+ srcReg =
_mm256_castsi128_si256(_mm_loadu_si128((const __m128i *)(src_ptr + 5)));
- srcReg32b2 = _mm256_inserti128_si256(
- srcReg32b2,
+ srcReg = _mm256_inserti128_si256(
+ srcReg,
_mm_loadu_si128((const __m128i *)(src_ptr + src_pixels_per_line + 5)),
1);
- // add and saturate the results together
- srcRegFilt32b1_1 = _mm256_adds_epi16(
- srcRegFilt32b1_1, _mm256_max_epi16(srcRegFilt32b3, srcRegFilt32b2));
-
// filter the source buffer
- srcRegFilt32b2_1 = _mm256_shuffle_epi8(srcReg32b2, filt1Reg);
- srcRegFilt32b2 = _mm256_shuffle_epi8(srcReg32b2, filt4Reg);
+ s[0] = _mm256_shuffle_epi8(srcReg, filt[0]);
+ s[1] = _mm256_shuffle_epi8(srcReg, filt[1]);
+ s[2] = _mm256_shuffle_epi8(srcReg, filt[2]);
+ s[3] = _mm256_shuffle_epi8(srcReg, filt[3]);
+ outReg32b2 = convolve8_16_avx2(s, f);
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt32b2_1 = _mm256_maddubs_epi16(srcRegFilt32b2_1, firstFilters);
- srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, forthFilters);
+ // shrink to 8 bit each 16 bits, the low and high 64-bits of each lane
+ // contain the first and second convolve result respectively
+ outReg32b1 = _mm256_packus_epi16(outReg32b1, outReg32b2);
- // add and saturate the results together
- srcRegFilt32b2_1 = _mm256_adds_epi16(srcRegFilt32b2_1, srcRegFilt32b2);
-
- // filter the source buffer
- srcRegFilt32b3 = _mm256_shuffle_epi8(srcReg32b2, filt2Reg);
- srcRegFilt32b2 = _mm256_shuffle_epi8(srcReg32b2, filt3Reg);
-
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt32b3 = _mm256_maddubs_epi16(srcRegFilt32b3, secondFilters);
- srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, thirdFilters);
-
- // add and saturate the results together
- srcRegFilt32b2_1 = _mm256_adds_epi16(
- srcRegFilt32b2_1, _mm256_min_epi16(srcRegFilt32b3, srcRegFilt32b2));
- srcRegFilt32b2_1 = _mm256_adds_epi16(
- srcRegFilt32b2_1, _mm256_max_epi16(srcRegFilt32b3, srcRegFilt32b2));
-
- srcRegFilt32b1_1 = _mm256_adds_epi16(srcRegFilt32b1_1, addFilterReg64);
-
- srcRegFilt32b2_1 = _mm256_adds_epi16(srcRegFilt32b2_1, addFilterReg64);
-
- // shift by 7 bit each 16 bit
- srcRegFilt32b1_1 = _mm256_srai_epi16(srcRegFilt32b1_1, 7);
- srcRegFilt32b2_1 = _mm256_srai_epi16(srcRegFilt32b2_1, 7);
-
- // shrink to 8 bit each 16 bits, the first lane contain the first
- // convolve result and the second lane contain the second convolve
- // result
- srcRegFilt32b1_1 = _mm256_packus_epi16(srcRegFilt32b1_1, srcRegFilt32b2_1);
-
src_ptr += src_stride;
// average if necessary
- outReg1 = _mm256_castsi256_si128(srcRegFilt32b1_1);
- outReg2 = _mm256_extractf128_si256(srcRegFilt32b1_1, 1);
+ outReg1 = _mm256_castsi256_si128(outReg32b1);
+ outReg2 = _mm256_extractf128_si256(outReg32b1, 1);
if (avg) {outReg1 = _mm_avg_epu8(outReg1, _mm_load_si128((__m128i *)output_ptr));
outReg2 = _mm_avg_epu8(
@@ -207,90 +116,41 @@
// if the number of strides is odd.
// process only 16 bytes
if (i > 0) {- __m128i srcReg1, srcReg2, srcRegFilt1_1, srcRegFilt2_1;
- __m128i srcRegFilt2, srcRegFilt3;
+ __m128i srcReg;
- srcReg1 = _mm_loadu_si128((const __m128i *)(src_ptr - 3));
+ // load the first 16 bytes of the last row
+ srcReg = _mm_loadu_si128((const __m128i *)(src_ptr - 3));
// filter the source buffer
- srcRegFilt1_1 = _mm_shuffle_epi8(srcReg1, _mm256_castsi256_si128(filt1Reg));
- srcRegFilt2 = _mm_shuffle_epi8(srcReg1, _mm256_castsi256_si128(filt4Reg));
+ s[0] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[0])));
+ s[1] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[1])));
+ s[2] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[2])));
+ s[3] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[3])));
+ outReg1 = convolve8_8_avx2(s, f);
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt1_1 =
- _mm_maddubs_epi16(srcRegFilt1_1, _mm256_castsi256_si128(firstFilters));
- srcRegFilt2 =
- _mm_maddubs_epi16(srcRegFilt2, _mm256_castsi256_si128(forthFilters));
-
- // add and saturate the results together
- srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1, srcRegFilt2);
-
- // filter the source buffer
- srcRegFilt3 = _mm_shuffle_epi8(srcReg1, _mm256_castsi256_si128(filt2Reg));
- srcRegFilt2 = _mm_shuffle_epi8(srcReg1, _mm256_castsi256_si128(filt3Reg));
-
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt3 =
- _mm_maddubs_epi16(srcRegFilt3, _mm256_castsi256_si128(secondFilters));
- srcRegFilt2 =
- _mm_maddubs_epi16(srcRegFilt2, _mm256_castsi256_si128(thirdFilters));
-
- // add and saturate the results together
- srcRegFilt1_1 =
- _mm_adds_epi16(srcRegFilt1_1, _mm_min_epi16(srcRegFilt3, srcRegFilt2));
-
// reading the next 16 bytes
// (part of it was being read by earlier read)
- srcReg2 = _mm_loadu_si128((const __m128i *)(src_ptr + 5));
+ srcReg = _mm_loadu_si128((const __m128i *)(src_ptr + 5));
- // add and saturate the results together
- srcRegFilt1_1 =
- _mm_adds_epi16(srcRegFilt1_1, _mm_max_epi16(srcRegFilt3, srcRegFilt2));
-
// filter the source buffer
- srcRegFilt2_1 = _mm_shuffle_epi8(srcReg2, _mm256_castsi256_si128(filt1Reg));
- srcRegFilt2 = _mm_shuffle_epi8(srcReg2, _mm256_castsi256_si128(filt4Reg));
+ s[0] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[0])));
+ s[1] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[1])));
+ s[2] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[2])));
+ s[3] = _mm256_castsi128_si256(
+ _mm_shuffle_epi8(srcReg, _mm256_castsi256_si128(filt[3])));
+ outReg2 = convolve8_8_avx2(s, f);
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt2_1 =
- _mm_maddubs_epi16(srcRegFilt2_1, _mm256_castsi256_si128(firstFilters));
- srcRegFilt2 =
- _mm_maddubs_epi16(srcRegFilt2, _mm256_castsi256_si128(forthFilters));
+ // shrink to 8 bit each 16 bits, the low and high 64-bits of each lane
+ // contain the first and second convolve result respectively
+ outReg1 = _mm_packus_epi16(outReg1, outReg2);
- // add and saturate the results together
- srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1, srcRegFilt2);
-
- // filter the source buffer
- srcRegFilt3 = _mm_shuffle_epi8(srcReg2, _mm256_castsi256_si128(filt2Reg));
- srcRegFilt2 = _mm_shuffle_epi8(srcReg2, _mm256_castsi256_si128(filt3Reg));
-
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt3 =
- _mm_maddubs_epi16(srcRegFilt3, _mm256_castsi256_si128(secondFilters));
- srcRegFilt2 =
- _mm_maddubs_epi16(srcRegFilt2, _mm256_castsi256_si128(thirdFilters));
-
- // add and saturate the results together
- srcRegFilt2_1 =
- _mm_adds_epi16(srcRegFilt2_1, _mm_min_epi16(srcRegFilt3, srcRegFilt2));
- srcRegFilt2_1 =
- _mm_adds_epi16(srcRegFilt2_1, _mm_max_epi16(srcRegFilt3, srcRegFilt2));
-
- srcRegFilt1_1 =
- _mm_adds_epi16(srcRegFilt1_1, _mm256_castsi256_si128(addFilterReg64));
-
- srcRegFilt2_1 =
- _mm_adds_epi16(srcRegFilt2_1, _mm256_castsi256_si128(addFilterReg64));
-
- // shift by 7 bit each 16 bit
- srcRegFilt1_1 = _mm_srai_epi16(srcRegFilt1_1, 7);
- srcRegFilt2_1 = _mm_srai_epi16(srcRegFilt2_1, 7);
-
- // shrink to 8 bit each 16 bits, the first lane contain the first
- // convolve result and the second lane contain the second convolve
- // result
- outReg1 = _mm_packus_epi16(srcRegFilt1_1, srcRegFilt2_1);
-
// average if necessary
if (avg) {outReg1 = _mm_avg_epu8(outReg1, _mm_load_si128((__m128i *)output_ptr));
@@ -304,7 +164,7 @@
static void vpx_filter_block1d16_h8_avx2(
const uint8_t *src_ptr, ptrdiff_t src_stride, uint8_t *output_ptr,
ptrdiff_t dst_stride, uint32_t output_height, const int16_t *filter) {- vpx_filter_block1d16_h8_X_avx2(src_ptr, src_stride, output_ptr, dst_stride,
+ vpx_filter_block1d16_h8_x_avx2(src_ptr, src_stride, output_ptr, dst_stride,
output_height, filter, 0);
}
@@ -311,162 +171,92 @@
static void vpx_filter_block1d16_h8_avg_avx2(
const uint8_t *src_ptr, ptrdiff_t src_stride, uint8_t *output_ptr,
ptrdiff_t dst_stride, uint32_t output_height, const int16_t *filter) {- vpx_filter_block1d16_h8_X_avx2(src_ptr, src_stride, output_ptr, dst_stride,
+ vpx_filter_block1d16_h8_x_avx2(src_ptr, src_stride, output_ptr, dst_stride,
output_height, filter, 1);
}
-static INLINE void vpx_filter_block1d16_v8_X_avx2(
+static INLINE void vpx_filter_block1d16_v8_x_avx2(
const uint8_t *src_ptr, ptrdiff_t src_pitch, uint8_t *output_ptr,
ptrdiff_t out_pitch, uint32_t output_height, const int16_t *filter,
const int avg) {- __m128i filtersReg, outReg1, outReg2;
- __m256i addFilterReg64;
- __m256i srcReg32b1, srcReg32b2, srcReg32b3, srcReg32b4, srcReg32b5;
- __m256i srcReg32b6, srcReg32b7, srcReg32b8, srcReg32b9, srcReg32b10;
- __m256i srcReg32b11, srcReg32b12, filtersReg32;
- __m256i firstFilters, secondFilters, thirdFilters, forthFilters;
+ __m128i outReg1, outReg2;
+ __m256i srcRegHead1;
unsigned int i;
ptrdiff_t src_stride, dst_stride;
+ __m256i f[4], s1[4], s2[4];
- // create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
- addFilterReg64 = _mm256_set1_epi32((int)0x0400040u);
- filtersReg = _mm_loadu_si128((const __m128i *)filter);
- // converting the 16 bit (short) to 8 bit (byte) and have the
- // same data in both lanes of 128 bit register.
- filtersReg = _mm_packs_epi16(filtersReg, filtersReg);
- // have the same data in both lanes of a 256 bit register
- filtersReg32 = MM256_BROADCASTSI128_SI256(filtersReg);
+ shuffle_filter_avx2(filter, f);
- // duplicate only the first 16 bits (first and second byte)
- // across 256 bit register
- firstFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x100u));
- // duplicate only the second 16 bits (third and forth byte)
- // across 256 bit register
- secondFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x302u));
- // duplicate only the third 16 bits (fifth and sixth byte)
- // across 256 bit register
- thirdFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x504u));
- // duplicate only the forth 16 bits (seventh and eighth byte)
- // across 256 bit register
- forthFilters = _mm256_shuffle_epi8(filtersReg32, _mm256_set1_epi16(0x706u));
-
// multiple the size of the source and destination stride by two
src_stride = src_pitch << 1;
dst_stride = out_pitch << 1;
- // load 16 bytes 7 times in stride of src_pitch
- srcReg32b1 =
- _mm256_castsi128_si256(_mm_loadu_si128((const __m128i *)(src_ptr)));
- srcReg32b2 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch)));
- srcReg32b3 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 2)));
- srcReg32b4 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 3)));
- srcReg32b5 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 4)));
- srcReg32b6 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 5)));
- srcReg32b7 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 6)));
+ {+ __m128i s[6];
+ __m256i s32b[6];
- // have each consecutive loads on the same 256 register
- srcReg32b1 = _mm256_inserti128_si256(srcReg32b1,
- _mm256_castsi256_si128(srcReg32b2), 1);
- srcReg32b2 = _mm256_inserti128_si256(srcReg32b2,
- _mm256_castsi256_si128(srcReg32b3), 1);
- srcReg32b3 = _mm256_inserti128_si256(srcReg32b3,
- _mm256_castsi256_si128(srcReg32b4), 1);
- srcReg32b4 = _mm256_inserti128_si256(srcReg32b4,
- _mm256_castsi256_si128(srcReg32b5), 1);
- srcReg32b5 = _mm256_inserti128_si256(srcReg32b5,
- _mm256_castsi256_si128(srcReg32b6), 1);
- srcReg32b6 = _mm256_inserti128_si256(srcReg32b6,
- _mm256_castsi256_si128(srcReg32b7), 1);
+ // load 16 bytes 7 times in stride of src_pitch
+ s[0] = _mm_loadu_si128((const __m128i *)(src_ptr + 0 * src_pitch));
+ s[1] = _mm_loadu_si128((const __m128i *)(src_ptr + 1 * src_pitch));
+ s[2] = _mm_loadu_si128((const __m128i *)(src_ptr + 2 * src_pitch));
+ s[3] = _mm_loadu_si128((const __m128i *)(src_ptr + 3 * src_pitch));
+ s[4] = _mm_loadu_si128((const __m128i *)(src_ptr + 4 * src_pitch));
+ s[5] = _mm_loadu_si128((const __m128i *)(src_ptr + 5 * src_pitch));
+ srcRegHead1 = _mm256_castsi128_si256(
+ _mm_loadu_si128((const __m128i *)(src_ptr + 6 * src_pitch)));
- // merge every two consecutive registers except the last one
- srcReg32b10 = _mm256_unpacklo_epi8(srcReg32b1, srcReg32b2);
- srcReg32b1 = _mm256_unpackhi_epi8(srcReg32b1, srcReg32b2);
+ // have each consecutive loads on the same 256 register
+ s32b[0] = _mm256_inserti128_si256(_mm256_castsi128_si256(s[0]), s[1], 1);
+ s32b[1] = _mm256_inserti128_si256(_mm256_castsi128_si256(s[1]), s[2], 1);
+ s32b[2] = _mm256_inserti128_si256(_mm256_castsi128_si256(s[2]), s[3], 1);
+ s32b[3] = _mm256_inserti128_si256(_mm256_castsi128_si256(s[3]), s[4], 1);
+ s32b[4] = _mm256_inserti128_si256(_mm256_castsi128_si256(s[4]), s[5], 1);
+ s32b[5] = _mm256_inserti128_si256(_mm256_castsi128_si256(s[5]),
+ _mm256_castsi256_si128(srcRegHead1), 1);
- // save
- srcReg32b11 = _mm256_unpacklo_epi8(srcReg32b3, srcReg32b4);
+ // merge every two consecutive registers except the last one
+ // the first lanes contain values for filtering odd rows (1,3,5...) and
+ // the second lanes contain values for filtering even rows (2,4,6...)
+ s1[0] = _mm256_unpacklo_epi8(s32b[0], s32b[1]);
+ s2[0] = _mm256_unpackhi_epi8(s32b[0], s32b[1]);
+ s1[1] = _mm256_unpacklo_epi8(s32b[2], s32b[3]);
+ s2[1] = _mm256_unpackhi_epi8(s32b[2], s32b[3]);
+ s1[2] = _mm256_unpacklo_epi8(s32b[4], s32b[5]);
+ s2[2] = _mm256_unpackhi_epi8(s32b[4], s32b[5]);
+ }
- // save
- srcReg32b3 = _mm256_unpackhi_epi8(srcReg32b3, srcReg32b4);
-
- // save
- srcReg32b2 = _mm256_unpacklo_epi8(srcReg32b5, srcReg32b6);
-
- // save
- srcReg32b5 = _mm256_unpackhi_epi8(srcReg32b5, srcReg32b6);
-
for (i = output_height; i > 1; i -= 2) {- // load the last 2 loads of 16 bytes and have every two
+ __m256i srcRegHead2, srcRegHead3;
+
+ // load the next 2 loads of 16 bytes and have every two
// consecutive loads in the same 256 bit register
- srcReg32b8 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 7)));
- srcReg32b7 = _mm256_inserti128_si256(srcReg32b7,
- _mm256_castsi256_si128(srcReg32b8), 1);
- srcReg32b9 = _mm256_castsi128_si256(
- _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 8)));
- srcReg32b8 = _mm256_inserti128_si256(srcReg32b8,
- _mm256_castsi256_si128(srcReg32b9), 1);
+ srcRegHead2 = _mm256_castsi128_si256(
+ _mm_loadu_si128((const __m128i *)(src_ptr + 7 * src_pitch)));
+ srcRegHead1 = _mm256_inserti128_si256(
+ srcRegHead1, _mm256_castsi256_si128(srcRegHead2), 1);
+ srcRegHead3 = _mm256_castsi128_si256(
+ _mm_loadu_si128((const __m128i *)(src_ptr + 8 * src_pitch)));
+ srcRegHead2 = _mm256_inserti128_si256(
+ srcRegHead2, _mm256_castsi256_si128(srcRegHead3), 1);
- // merge every two consecutive registers
- // save
- srcReg32b4 = _mm256_unpacklo_epi8(srcReg32b7, srcReg32b8);
- srcReg32b7 = _mm256_unpackhi_epi8(srcReg32b7, srcReg32b8);
+ // merge the two new consecutive registers
+ // the first lane contain values for filtering odd rows (1,3,5...) and
+ // the second lane contain values for filtering even rows (2,4,6...)
+ s1[3] = _mm256_unpacklo_epi8(srcRegHead1, srcRegHead2);
+ s2[3] = _mm256_unpackhi_epi8(srcRegHead1, srcRegHead2);
- // multiply 2 adjacent elements with the filter and add the result
- srcReg32b10 = _mm256_maddubs_epi16(srcReg32b10, firstFilters);
- srcReg32b6 = _mm256_maddubs_epi16(srcReg32b4, forthFilters);
+ s1[0] = convolve8_16_avx2(s1, f);
+ s2[0] = convolve8_16_avx2(s2, f);
- // add and saturate the results together
- srcReg32b10 = _mm256_adds_epi16(srcReg32b10, srcReg32b6);
+ // shrink to 8 bit each 16 bits, the low and high 64-bits of each lane
+ // contain the first and second convolve result respectively
+ s1[0] = _mm256_packus_epi16(s1[0], s2[0]);
- // multiply 2 adjacent elements with the filter and add the result
- srcReg32b8 = _mm256_maddubs_epi16(srcReg32b11, secondFilters);
- srcReg32b12 = _mm256_maddubs_epi16(srcReg32b2, thirdFilters);
-
- // add and saturate the results together
- srcReg32b10 = _mm256_adds_epi16(srcReg32b10,
- _mm256_min_epi16(srcReg32b8, srcReg32b12));
- srcReg32b10 = _mm256_adds_epi16(srcReg32b10,
- _mm256_max_epi16(srcReg32b8, srcReg32b12));
-
- // multiply 2 adjacent elements with the filter and add the result
- srcReg32b1 = _mm256_maddubs_epi16(srcReg32b1, firstFilters);
- srcReg32b6 = _mm256_maddubs_epi16(srcReg32b7, forthFilters);
-
- srcReg32b1 = _mm256_adds_epi16(srcReg32b1, srcReg32b6);
-
- // multiply 2 adjacent elements with the filter and add the result
- srcReg32b8 = _mm256_maddubs_epi16(srcReg32b3, secondFilters);
- srcReg32b12 = _mm256_maddubs_epi16(srcReg32b5, thirdFilters);
-
- // add and saturate the results together
- srcReg32b1 = _mm256_adds_epi16(srcReg32b1,
- _mm256_min_epi16(srcReg32b8, srcReg32b12));
- srcReg32b1 = _mm256_adds_epi16(srcReg32b1,
- _mm256_max_epi16(srcReg32b8, srcReg32b12));
-
- srcReg32b10 = _mm256_adds_epi16(srcReg32b10, addFilterReg64);
- srcReg32b1 = _mm256_adds_epi16(srcReg32b1, addFilterReg64);
-
- // shift by 7 bit each 16 bit
- srcReg32b10 = _mm256_srai_epi16(srcReg32b10, 7);
- srcReg32b1 = _mm256_srai_epi16(srcReg32b1, 7);
-
- // shrink to 8 bit each 16 bits, the first lane contain the first
- // convolve result and the second lane contain the second convolve
- // result
- srcReg32b1 = _mm256_packus_epi16(srcReg32b10, srcReg32b1);
-
src_ptr += src_stride;
// average if necessary
- outReg1 = _mm256_castsi256_si128(srcReg32b1);
- outReg2 = _mm256_extractf128_si256(srcReg32b1, 1);
+ outReg1 = _mm256_castsi256_si128(s1[0]);
+ outReg2 = _mm256_extractf128_si256(s1[0], 1);
if (avg) {outReg1 = _mm_avg_epu8(outReg1, _mm_load_si128((__m128i *)output_ptr));
outReg2 = _mm_avg_epu8(
@@ -481,79 +271,36 @@
output_ptr += dst_stride;
- // save part of the registers for next strides
- srcReg32b10 = srcReg32b11;
- srcReg32b1 = srcReg32b3;
- srcReg32b11 = srcReg32b2;
- srcReg32b3 = srcReg32b5;
- srcReg32b2 = srcReg32b4;
- srcReg32b5 = srcReg32b7;
- srcReg32b7 = srcReg32b9;
+ // shift down by two rows
+ s1[0] = s1[1];
+ s2[0] = s2[1];
+ s1[1] = s1[2];
+ s2[1] = s2[2];
+ s1[2] = s1[3];
+ s2[2] = s2[3];
+ srcRegHead1 = srcRegHead3;
}
+
+ // if the number of strides is odd.
+ // process only 16 bytes
if (i > 0) {- __m128i srcRegFilt1, srcRegFilt3, srcRegFilt4, srcRegFilt5;
- __m128i srcRegFilt6, srcRegFilt7, srcRegFilt8;
// load the last 16 bytes
- srcRegFilt8 = _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 7));
+ const __m128i srcRegHead2 =
+ _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 7));
// merge the last 2 results together
- srcRegFilt4 =
- _mm_unpacklo_epi8(_mm256_castsi256_si128(srcReg32b7), srcRegFilt8);
- srcRegFilt7 =
- _mm_unpackhi_epi8(_mm256_castsi256_si128(srcReg32b7), srcRegFilt8);
+ s1[0] = _mm256_castsi128_si256(
+ _mm_unpacklo_epi8(_mm256_castsi256_si128(srcRegHead1), srcRegHead2));
+ s2[0] = _mm256_castsi128_si256(
+ _mm_unpackhi_epi8(_mm256_castsi256_si128(srcRegHead1), srcRegHead2));
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt1 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b10),
- _mm256_castsi256_si128(firstFilters));
- srcRegFilt4 =
- _mm_maddubs_epi16(srcRegFilt4, _mm256_castsi256_si128(forthFilters));
- srcRegFilt3 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b1),
- _mm256_castsi256_si128(firstFilters));
- srcRegFilt7 =
- _mm_maddubs_epi16(srcRegFilt7, _mm256_castsi256_si128(forthFilters));
+ outReg1 = convolve8_8_avx2(s1, f);
+ outReg2 = convolve8_8_avx2(s2, f);
- // add and saturate the results together
- srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt4);
- srcRegFilt3 = _mm_adds_epi16(srcRegFilt3, srcRegFilt7);
+ // shrink to 8 bit each 16 bits, the low and high 64-bits of each lane
+ // contain the first and second convolve result respectively
+ outReg1 = _mm_packus_epi16(outReg1, outReg2);
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt4 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b11),
- _mm256_castsi256_si128(secondFilters));
- srcRegFilt5 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b3),
- _mm256_castsi256_si128(secondFilters));
-
- // multiply 2 adjacent elements with the filter and add the result
- srcRegFilt6 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b2),
- _mm256_castsi256_si128(thirdFilters));
- srcRegFilt7 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b5),
- _mm256_castsi256_si128(thirdFilters));
-
- // add and saturate the results together
- srcRegFilt1 =
- _mm_adds_epi16(srcRegFilt1, _mm_min_epi16(srcRegFilt4, srcRegFilt6));
- srcRegFilt3 =
- _mm_adds_epi16(srcRegFilt3, _mm_min_epi16(srcRegFilt5, srcRegFilt7));
-
- // add and saturate the results together
- srcRegFilt1 =
- _mm_adds_epi16(srcRegFilt1, _mm_max_epi16(srcRegFilt4, srcRegFilt6));
- srcRegFilt3 =
- _mm_adds_epi16(srcRegFilt3, _mm_max_epi16(srcRegFilt5, srcRegFilt7));
-
- srcRegFilt1 =
- _mm_adds_epi16(srcRegFilt1, _mm256_castsi256_si128(addFilterReg64));
- srcRegFilt3 =
- _mm_adds_epi16(srcRegFilt3, _mm256_castsi256_si128(addFilterReg64));
-
- // shift by 7 bit each 16 bit
- srcRegFilt1 = _mm_srai_epi16(srcRegFilt1, 7);
- srcRegFilt3 = _mm_srai_epi16(srcRegFilt3, 7);
-
- // shrink to 8 bit each 16 bits, the first lane contain the first
- // convolve result and the second lane contain the second convolve
- // result
- outReg1 = _mm_packus_epi16(srcRegFilt1, srcRegFilt3);
-
// average if necessary
if (avg) {outReg1 = _mm_avg_epu8(outReg1, _mm_load_si128((__m128i *)output_ptr));
@@ -568,7 +315,7 @@
ptrdiff_t src_stride, uint8_t *dst_ptr,
ptrdiff_t dst_stride, uint32_t height,
const int16_t *filter) {- vpx_filter_block1d16_v8_X_avx2(src_ptr, src_stride, dst_ptr, dst_stride,
+ vpx_filter_block1d16_v8_x_avx2(src_ptr, src_stride, dst_ptr, dst_stride,
height, filter, 0);
}
@@ -575,7 +322,7 @@
static void vpx_filter_block1d16_v8_avg_avx2(
const uint8_t *src_ptr, ptrdiff_t src_stride, uint8_t *dst_ptr,
ptrdiff_t dst_stride, uint32_t height, const int16_t *filter) {- vpx_filter_block1d16_v8_X_avx2(src_ptr, src_stride, dst_ptr, dst_stride,
+ vpx_filter_block1d16_v8_x_avx2(src_ptr, src_stride, dst_ptr, dst_stride,
height, filter, 1);
}