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129 lines
4.9 KiB
129 lines
4.9 KiB
// Copyright 2015 The Gemmlowp Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// pack_SSE.h: optimized SSE specializations of the templates in pack.h.
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#ifndef GEMMLOWP_INTERNAL_PACK_SSE_H_
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#define GEMMLOWP_INTERNAL_PACK_SSE_H_
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#include <smmintrin.h>
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#include "pack.h"
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namespace gemmlowp {
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// TODO: Add DepthMajorUint8SideMap
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typedef SideMap<const std::uint8_t, SideMapOrder::WidthMajor>
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WidthMajorUint8SideMap;
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template <int Cells>
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using WidthMajorSideFormatNCells4x2 =
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KernelSideFormat<CellFormat<4, 2, CellOrder::WidthMajor>, Cells>;
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template <int Cells>
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class PackingRegisterBlock<
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WidthMajorUint8SideMap,
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PackedSideBlock<WidthMajorSideFormatNCells4x2<Cells> > >
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: public PackingRegisterBlockBase<
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WidthMajorUint8SideMap,
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PackedSideBlock<WidthMajorSideFormatNCells4x2<Cells> > > {
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public:
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typedef WidthMajorSideFormatNCells4x2<Cells> KernelSideFormat;
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typedef typename KernelSideFormat::Cell CellFormat;
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static constexpr int kCells = KernelSideFormat::kCells;
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static constexpr int kCellWidth = CellFormat::kWidth;
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static constexpr int kKernelWidth = CellFormat::kWidth * kCells;
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static constexpr int kCellDepth = CellFormat::kDepth;
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static constexpr int kCellSize = CellFormat::kSize;
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void Pack(PackedSideBlock<KernelSideFormat>* dst, int start_width) {
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std::uint8_t* dst_ptr = dst->current_data();
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const int width_stride = this->complete_src_.width_stride();
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int depth_step = 8;
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__m128i one = _mm_set1_epi16(1);
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for (int cell_start_depth = 0; cell_start_depth < kRegisterSize;
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cell_start_depth += depth_step) {
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for (int cell_start_width = 0; cell_start_width < kKernelWidth;
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cell_start_width += kCellWidth) {
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std::int32_t* cell_sums_of_each_slice_ptr =
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dst->sums_of_each_slice() + start_width + cell_start_width;
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const std::uint8_t* src_data =
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this->complete_src_.data(cell_start_width, cell_start_depth);
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__m128i xmm1 =
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_mm_loadl_epi64(reinterpret_cast<const __m128i*>(&src_data[0]));
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__m128i xmm2 = _mm_loadl_epi64(
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reinterpret_cast<const __m128i*>(&src_data[1 * width_stride]));
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__m128i xmm3 = _mm_loadl_epi64(
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reinterpret_cast<const __m128i*>(&src_data[2 * width_stride]));
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__m128i xmm4 = _mm_loadl_epi64(
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reinterpret_cast<const __m128i*>(&src_data[3 * width_stride]));
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__m128i xmm5 = _mm_unpacklo_epi16(xmm1, xmm2);
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__m128i xmm8 = _mm_shuffle_epi32(xmm5, 0x31);
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__m128i xmm6 = _mm_unpacklo_epi16(xmm3, xmm4);
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__m128i xmm7 = _mm_shuffle_epi32(xmm6, 0x80);
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__m128i xmm9 = _mm_blend_epi16(xmm5, xmm7, 0xcc);
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__m128i xmm10 = _mm_blend_epi16(xmm8, xmm6, 0xcc);
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_mm_storel_epi64(reinterpret_cast<__m128i*>(&dst_ptr[0]), xmm9);
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_mm_storel_epi64(
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reinterpret_cast<__m128i*>(&dst_ptr[kCellSize * kCells]), xmm10);
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__m128i xmm11 = _mm_shuffle_epi32(xmm9, 0xee);
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__m128i xmm12 = _mm_shuffle_epi32(xmm10, 0xee);
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_mm_storel_epi64(
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reinterpret_cast<__m128i*>(&dst_ptr[2 * kCellSize * kCells]),
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xmm11);
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_mm_storel_epi64(
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reinterpret_cast<__m128i*>(&dst_ptr[3 * kCellSize * kCells]),
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xmm12);
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xmm1 = _mm_cvtepu8_epi16(xmm9);
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xmm2 = _mm_madd_epi16(xmm1, one);
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__m128i sums_of_each_slice_xmm = _mm_loadu_si128(
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reinterpret_cast<const __m128i*>(&cell_sums_of_each_slice_ptr[0]));
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sums_of_each_slice_xmm = _mm_add_epi32(sums_of_each_slice_xmm, xmm2);
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xmm1 = _mm_cvtepu8_epi16(xmm10);
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xmm2 = _mm_madd_epi16(xmm1, one);
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sums_of_each_slice_xmm = _mm_add_epi32(sums_of_each_slice_xmm, xmm2);
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xmm1 = _mm_cvtepu8_epi16(xmm11);
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xmm2 = _mm_madd_epi16(xmm1, one);
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sums_of_each_slice_xmm = _mm_add_epi32(sums_of_each_slice_xmm, xmm2);
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xmm1 = _mm_cvtepu8_epi16(xmm12);
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xmm2 = _mm_madd_epi16(xmm1, one);
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sums_of_each_slice_xmm = _mm_add_epi32(sums_of_each_slice_xmm, xmm2);
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_mm_storeu_si128(
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reinterpret_cast<__m128i*>(&cell_sums_of_each_slice_ptr[0]),
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sums_of_each_slice_xmm);
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dst_ptr += kCellSize;
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}
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dst_ptr += 3 * kCellSize * kCells;
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}
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dst->seek_forward_n_cells(kCells * kRegisterSize / kCellDepth);
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}
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};
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} // namespace gemmlowp
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#endif // GEMMLOWP_INTERNAL_PACK_SSE_H_
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