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Diffstat (limited to 'src/core/NEON/kernels/arm_gemm/transforms/transpose_interleave_common.hpp')
-rw-r--r-- | src/core/NEON/kernels/arm_gemm/transforms/transpose_interleave_common.hpp | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/arm_gemm/transforms/transpose_interleave_common.hpp b/src/core/NEON/kernels/arm_gemm/transforms/transpose_interleave_common.hpp new file mode 100644 index 0000000000..3218ca1aac --- /dev/null +++ b/src/core/NEON/kernels/arm_gemm/transforms/transpose_interleave_common.hpp @@ -0,0 +1,160 @@ +/* + * Copyright (c) 2017-2018 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#pragma once + +template <unsigned int IntBy, typename TIn, typename TOut> +struct TransposeInterleaveCommon +{ + // Override the moveblock_1xY methods to improve performance + static inline void moveblock_1x1(const TIn *&in0, TOut *out) + { + for(unsigned int i = 0; i < IntBy; i++) + { + *out++ = static_cast<TOut>(*in0++); + } + } + + static inline void moveblock_1x2(const TIn *&in0, const TIn *&in1, TOut *out) + { + for(unsigned int i = 0; i < IntBy; i++) + { + *out++ = static_cast<TOut>(*in0++); + } + for(unsigned int i = 0; i < IntBy; i++) + { + *out++ = static_cast<TOut>(*in1++); + } + } + + static inline void moveblock_1x4(const TIn *&in0, const TIn *&in1, const TIn *&in2, const TIn *&in3, TOut *out) + { + for(unsigned int i = 0; i < IntBy; i++) + { + *out++ = static_cast<TOut>(*in0++); + } + for(unsigned int i = 0; i < IntBy; i++) + { + *out++ = static_cast<TOut>(*in1++); + } + for(unsigned int i = 0; i < IntBy; i++) + { + *out++ = static_cast<TOut>(*in2++); + } + for(unsigned int i = 0; i < IntBy; i++) + { + *out++ = static_cast<TOut>(*in3++); + } + } + + static inline void Transform(TOut *out, const TIn *in, const int stride, const int x0, const int xmax, const int k0, const int kmax) + { + const auto ldin = stride; + + TOut *outarray = out; + const TIn *inarray = in; + TOut *outptr_base = outarray; + const TIn *inptr_base = inarray + x0 + (k0 * ldin); + int ldout = (kmax - k0) * IntBy; + + int k = (kmax - k0); + for(; k > 3; k -= 4) + { + TOut *outptr = outptr_base; + const TIn *inptr = inptr_base; + const TIn *inptr1 = inptr + ldin; + const TIn *inptr2 = inptr1 + ldin; + const TIn *inptr3 = inptr2 + ldin; + + prefetch_3x(inptr); + prefetch_3x(inptr1); + prefetch_3x(inptr2); + prefetch_3x(inptr3); + + outptr_base += IntBy * 4; + inptr_base += ldin * 4; + + for(int x = (xmax - x0) / IntBy; x > 0; x--) + { + moveblock_1x4(inptr, inptr1, inptr2, inptr3, outptr); + outptr += ldout; + } + } + + if(k) + { + TOut *outptr = outptr_base; + const TIn *inptr = inptr_base; + const TIn *inptr1 = inptr + ldin; + const TIn *inptr2 = inptr1 + ldin; + + prefetch_3x(inptr); + prefetch_3x(inptr1); + prefetch_3x(inptr2); + + for(int x = (xmax - x0) / IntBy; x > 0; x--) + { + switch(k) + { + case 3: + moveblock_1x2(inptr, inptr1, outptr); + moveblock_1x1(inptr2, outptr + IntBy * 2); + break; + + case 2: + moveblock_1x2(inptr, inptr1, outptr); + break; + + case 1: + moveblock_1x1(inptr, outptr); + break; + + default: + UNREACHABLE("Impossible."); + } + + outptr += ldout; + } + } + + // Cope with ragged X cases + const unsigned int overflow = (xmax - x0) % IntBy; + if(overflow) + { + const TIn *inptr_base = inarray + (xmax - overflow) + (k0 * ldin); + TOut *outptr = outarray + ((xmax - x0) / IntBy) * ldout; + + for(int k = (kmax - k0); k > 0; k--) + { + const TIn *inptr = inptr_base; + inptr_base += ldin; + + for(unsigned int x = 0; x < IntBy; x++) + { + TOut val = (x < overflow) ? static_cast<TOut>(*inptr++) : static_cast<TOut>(0); + *outptr++ = val; + } + } + } + } +}; |