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Diffstat (limited to 'src/cpu/kernels/quantize/generic/neon/impl.h')
| -rw-r--r-- | src/cpu/kernels/quantize/generic/neon/impl.h | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/src/cpu/kernels/quantize/generic/neon/impl.h b/src/cpu/kernels/quantize/generic/neon/impl.h new file mode 100644 index 0000000000..9954a7645e --- /dev/null +++ b/src/cpu/kernels/quantize/generic/neon/impl.h @@ -0,0 +1,330 @@ +/* + * Copyright (c) 2024 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. + */ +#ifndef ACL_SRC_CPU_KERNELS_QUANTIZE_GENERIC_NEON_IMPL_H +#define ACL_SRC_CPU_KERNELS_QUANTIZE_GENERIC_NEON_IMPL_H + +#include "arm_compute/core/Helpers.h" + +#include "src/core/helpers/WindowHelpers.h" +#include "src/core/NEON/NEAsymm.h" +#include "src/core/NEON/wrapper/intrinsics/intrinsics.h" + +namespace arm_compute +{ +namespace cpu +{ +constexpr auto window_step = 16; + +template <typename T> +inline float32x4x4_t load_value(const T *input_ptr) +{ + using Tx16_t = typename wrapper::traits::neon_vector<T, 16>::type; + return arm_compute::convert_to_float32x4x4<Tx16_t>(wrapper::vloadq(input_ptr)); +} + +template <> +inline float32x4x4_t load_value(const float *input_ptr) +{ + return {wrapper::vloadq(input_ptr), wrapper::vloadq(input_ptr + 4), wrapper::vloadq(input_ptr + 8), + wrapper::vloadq(input_ptr + 12)}; +} +#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC +template <> +inline float32x4x4_t load_value(const float16_t *input_ptr) +{ + return {vcvt_f32_f16(wrapper::vload(input_ptr)), vcvt_f32_f16(wrapper::vload(input_ptr + 4)), + vcvt_f32_f16(wrapper::vload(input_ptr + 8)), vcvt_f32_f16(wrapper::vload(input_ptr + 12))}; +} + +#endif // __ARM_FEATURE_FP16_VECTOR_ARITHMETIC + +template <typename element_type> +using vector_type = wrapper::traits::neon_vector_t<element_type, window_step>; + +template <typename quantized_type> +inline vector_type<quantized_type> vquantize_qasymm8(const float32x4x4_t &qv, const UniformQuantizationInfo &qi); + +template <> +inline vector_type<uint8_t> vquantize_qasymm8<uint8_t>(const float32x4x4_t &qv, const UniformQuantizationInfo &qi) +{ + return vquantize(qv, qi); +} + +template <> +inline vector_type<int8_t> vquantize_qasymm8<int8_t>(const float32x4x4_t &qv, const UniformQuantizationInfo &qi) +{ + return vquantize_signed(qv, qi); +} + +template <typename TOut, typename = typename std::enable_if<std::is_signed<TOut>::value, bool>::type> +inline int8x16_t recombine_8_16(int16x8_t lower, int16x8_t upper) +{ + return wrapper::vcombine(wrapper::vqmovn(lower), wrapper::vqmovn(upper)); +} + +template <typename TOut, typename = typename std::enable_if<std::is_unsigned<TOut>::value, bool>::type> +inline uint8x16_t recombine_8_16(int16x8_t lower, int16x8_t upper) +{ + return wrapper::vcombine(wrapper::vqmovun(lower), wrapper::vqmovun(upper)); +} + +template <typename TIn, typename TOut> +void run_quantize_qsymm8(const ITensor *src, ITensor *dst, const Window &window) +{ + const auto window_start_x = static_cast<int>(window.x().start()); + const auto window_end_x = static_cast<int>(window.x().end()); + + const UniformQuantizationInfo uqinfo_in = src->info()->quantization_info().uniform(); + UniformQuantizationInfo uqinfo = dst->info()->quantization_info().uniform(); + uqinfo = compute_requantization_scale_offset(uqinfo_in, uqinfo); + + // Collapse window and reset first dimension to handle tail calculations manually + Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); + win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); + + Iterator input(src, win_collapsed); + Iterator output(dst, win_collapsed); + execute_window_loop( + win_collapsed, + [&](const Coordinates &) + { + auto input_ptr = reinterpret_cast<const TIn *>(input.ptr()); + auto output_ptr = reinterpret_cast<TOut *>(output.ptr()); + int x = window_start_x; + for (; x <= (window_end_x - window_step); x += window_step) + { + wrapper::vstore(&output_ptr[x], vquantize_qasymm8<TOut>(load_value(&input_ptr[x]), uqinfo)); + } + // Compute left-over elements + for (; x < window_end_x; ++x) + { + output_ptr[x] = quantize_qsymm8(input_ptr[x], dst->info()->quantization_info()); + } + }, + input, output); +} + +template <typename TIn, typename TOut> +void run_requantize_offset_only_convert(const ITensor *src, ITensor *dst, const Window &window) +{ + const auto window_start_x = static_cast<int>(window.x().start()); + const auto window_end_x = static_cast<int>(window.x().end()); + + // Calculate output offset difference. + const UniformQuantizationInfo uqinfo_in = src->info()->quantization_info().uniform(); + UniformQuantizationInfo uqinfo = dst->info()->quantization_info().uniform(); + uqinfo = compute_requantization_scale_offset(uqinfo_in, uqinfo); + + // Collapse window and reset first dimension to handle tail calculations manually + Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); + + win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); + + // Duplicate offset in signed vector format + const int8x16_t offset = wrapper::vdup_n(static_cast<int8_t>(uqinfo.offset), wrapper::traits::vector_128_tag{}); + + Iterator input(src, win_collapsed); + Iterator output(dst, win_collapsed); + execute_window_loop( + win_collapsed, + [&](const Coordinates &) + { + auto input_ptr = reinterpret_cast<const TIn *>(input.ptr()); + auto output_ptr = reinterpret_cast<TOut *>(output.ptr()); + int x = window_start_x; + for (; x <= (window_end_x - window_step); x += window_step) + { + const wrapper::traits::neon_vector_t<TIn, window_step> qv = + wrapper::vloadq(input_ptr + x); // load 128 bit vector of 8 bit datatype + + // Signed addition. + auto res = vaddq_s8(reinterpret_cast<int8x16_t>(qv), offset); + + // Output is dependent on datatype. + wrapper::vstore(&output_ptr[x], + reinterpret_cast<wrapper::traits::neon_vector_t<TOut, window_step>>(res)); + } + // Compute left-over elements + for (; x < window_end_x; ++x) + { + auto result = uqinfo.offset + static_cast<int32_t>(input_ptr[x]); + output_ptr[x] = static_cast<TOut>(result); + } + }, + input, output); +} + +template <typename TIn, typename TOut> +void run_requantize_offset_only(const ITensor *src, ITensor *dst, const Window &window) +{ + const auto window_start_x = static_cast<int>(window.x().start()); + const auto window_end_x = static_cast<int>(window.x().end()); + + const UniformQuantizationInfo uqinfo_in = src->info()->quantization_info().uniform(); + UniformQuantizationInfo uqinfo = dst->info()->quantization_info().uniform(); + uqinfo = compute_requantization_scale_offset(uqinfo_in, uqinfo); + + // Collapse window and reset first dimension to handle tail calculations manually + Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); + win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); + + // Duplicate offset in signed vector format + const int16x8_t offset = wrapper::vdup_n(static_cast<int16_t>(uqinfo.offset), wrapper::traits::vector_128_tag{}); + + const int32_t low_bound = (dst->info()->data_type() == DataType::QASYMM8) ? 0 : -128; + const int32_t upper_bound = (dst->info()->data_type() == DataType::QASYMM8) ? 255 : 127; + + Iterator input(src, win_collapsed); + Iterator output(dst, win_collapsed); + execute_window_loop( + win_collapsed, + [&](const Coordinates &) + { + auto input_ptr = reinterpret_cast<const TIn *>(input.ptr()); + TOut *output_ptr = reinterpret_cast<TOut *>(output.ptr()); + + int x = window_start_x; + for (; x <= (window_end_x - window_step); x += window_step) + { + const auto qv = wrapper::vloadq(input_ptr + x); // load 128 bit vector of 8 bit datatype + int16x8_t lower = reinterpret_cast<int16x8_t>(wrapper::vmovl(wrapper::vgetlow(qv))); + int16x8_t upper = reinterpret_cast<int16x8_t>(wrapper::vmovl(wrapper::vgethigh(qv))); + + // Signed addition. + lower = wrapper::vqadd(lower, offset); + upper = wrapper::vqadd(upper, offset); + + // Output is dependent on datatype. + auto res = recombine_8_16<TOut>(lower, upper); + wrapper::vstore(&output_ptr[x], res); + } + // Compute left-over elements + for (; x < window_end_x; ++x) + { + // Add offset and clamp result to within the range of the output datatype. + int32_t result = uqinfo.offset + static_cast<int32_t>(input_ptr[x]); + result = utility::clamp<int32_t>(result, low_bound, upper_bound); + + // Cast result to output datatype. + output_ptr[x] = static_cast<TOut>(result); + } + }, + input, output); +} + +template <typename TIn, typename TOut> +void run_quantize_qasymm8(const ITensor *src, ITensor *dst, const Window &window) +{ + const auto window_start_x = static_cast<int>(window.x().start()); + const auto window_end_x = static_cast<int>(window.x().end()); + + const UniformQuantizationInfo uqinfo_in = src->info()->quantization_info().uniform(); + UniformQuantizationInfo uqinfo = dst->info()->quantization_info().uniform(); + if (is_data_type_quantized_asymmetric(src->info()->data_type())) + { + uqinfo = compute_requantization_scale_offset(uqinfo_in, uqinfo); + } +#ifdef __aarch64__ + constexpr RoundingPolicy rounding_policy = RoundingPolicy::TO_NEAREST_EVEN; +#else //__aarch64__ + constexpr RoundingPolicy rounding_policy = RoundingPolicy::TO_ZERO; +#endif //__aarch64__ + + // Collapse window and reset first dimension to handle tail calculations manually + Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); + win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); + + Iterator input(src, win_collapsed); + Iterator output(dst, win_collapsed); + execute_window_loop( + win_collapsed, + [&](const Coordinates &) + { + auto input_ptr = reinterpret_cast<const TIn *>(input.ptr()); + auto output_ptr = reinterpret_cast<TOut *>(output.ptr()); + + int x = window_start_x; + for (; x <= (window_end_x - window_step); x += window_step) + { + wrapper::vstore(&output_ptr[x], vquantize_qasymm8<TOut>(load_value(&input_ptr[x]), uqinfo)); + } + // Compute left-over elements + for (; x < window_end_x; ++x) + { + output_ptr[x] = Qasymm8QuantizationHelper<TOut>::quantize(input_ptr[x], uqinfo, rounding_policy); + } + }, + input, output); +} + +template <typename T> +void run_quantize_qasymm16(const ITensor *src, ITensor *dst, const Window &window) +{ + const auto window_start_x = static_cast<int>(window.x().start()); + const auto window_end_x = static_cast<int>(window.x().end()); + + const UniformQuantizationInfo uqinfo_in = src->info()->quantization_info().uniform(); + UniformQuantizationInfo uqinfo = dst->info()->quantization_info().uniform(); + if (is_data_type_quantized_asymmetric(src->info()->data_type())) + { + uqinfo = compute_requantization_scale_offset(uqinfo_in, uqinfo); + } +#ifdef __aarch64__ + constexpr RoundingPolicy rounding_policy = RoundingPolicy::TO_NEAREST_EVEN; +#else //__aarch64__ + constexpr RoundingPolicy rounding_policy = RoundingPolicy::TO_ZERO; +#endif //__aarch64__ + + // Collapse window and reset first dimension to handle tail calculations manually + Window win_collapsed = window.collapse_if_possible(window, Window::DimZ); + win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1)); + + Iterator input(src, win_collapsed); + Iterator output(dst, win_collapsed); + execute_window_loop( + win_collapsed, + [&](const Coordinates &) + { + auto input_ptr = reinterpret_cast<const T *>(input.ptr()); + auto output_ptr = reinterpret_cast<uint16_t *>(output.ptr()); + + int x = window_start_x; + for (; x <= (window_end_x - window_step); x += window_step) + { + uint16x8x2_t tmp = vquantize_qasymm16(load_value(&input_ptr[x]), uqinfo); + vst1q_u16(&output_ptr[x], tmp.val[0]); + vst1q_u16(&output_ptr[x + 8], tmp.val[1]); + } + // Compute left-over elements + for (; x < window_end_x; ++x) + { + output_ptr[x] = quantize_qasymm16(input_ptr[x], uqinfo, rounding_policy); + } + }, + input, output); +} +} // namespace cpu +} // namespace arm_compute + +#endif // ACL_SRC_CPU_KERNELS_QUANTIZE_GENERIC_NEON_IMPL_H |