diff options
Diffstat (limited to 'src/cpu/kernels/add/generic/neon/impl.cpp')
| -rw-r--r-- | src/cpu/kernels/add/generic/neon/impl.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/cpu/kernels/add/generic/neon/impl.cpp b/src/cpu/kernels/add/generic/neon/impl.cpp index 67985c985e..0f7b31c754 100644 --- a/src/cpu/kernels/add/generic/neon/impl.cpp +++ b/src/cpu/kernels/add/generic/neon/impl.cpp @@ -157,6 +157,223 @@ void add_same_neon_as_1d_array(const ITensor *src0, const ITensor *src1, ITensor } } +bool add_q8_neon_fixedpoint_possible(const ITensorInfo *src0, const ITensorInfo *src1, const ITensorInfo *dst) +{ + const auto iq0 = src0->quantization_info().uniform(); + const auto iq1 = src1->quantization_info().uniform(); + const auto oq = dst->quantization_info().uniform(); + + const auto scale0 = iq0.scale / oq.scale; + const auto scale1 = iq1.scale / oq.scale; + + if(scale0 < -31.f || scale0 > 31.f || scale1 < -31.f || scale1 > 31.f) + { + // The scale factor cannot be stored as 6.10 signed fixed-point number. + return false; + } + + const auto offset = float(oq.offset) - scale0 * float(iq0.offset) - scale1 * float(iq1.offset); + const auto max_acc = (std::abs(scale0) + std::abs(scale1)) * 1024.f + std::abs(offset); + + if(max_acc > 2097151.f) // 2^21 - 1 + { + // It might not be possible to store the result as 22.10 signed fixed-point number. + return false; + } + + return true; +} + +template <typename ScalarType> +void add_q8_neon_fixedpoint(const ITensor *src0, const ITensor *src1, ITensor *dst, const ConvertPolicy &policy, const Window &window) +{ + ARM_COMPUTE_UNUSED(policy); + + const auto in0_info = src0->info(); + const auto in1_info = src1->info(); + + const auto &in0_shape = in0_info->tensor_shape(); + const auto &in1_shape = in1_info->tensor_shape(); + + // Create input windows. + Window in0_win = window.broadcast_if_dimension_le_one(in0_shape); + Window in1_win = window.broadcast_if_dimension_le_one(in1_shape); + + // Clear the x dimension on the execution window as we process the whole row each iteration. + Window win = window; + win.set(Window::DimX, Window::Dimension(0, 1, 1)); + + constexpr int window_step_x = 16; + const auto window_start_x = window.x().start(); + const auto window_end_x = window.x().end(); + const auto is_broadcast_across_x = in0_shape.x() != in1_shape.x(); + + const auto iq0_info = in0_info->quantization_info().uniform(); + const auto iq1_info = in1_info->quantization_info().uniform(); + const auto oq_info = dst->info()->quantization_info().uniform(); + + const auto in0_scale = iq0_info.scale / oq_info.scale; + const auto in1_scale = iq1_info.scale / oq_info.scale; + const auto offset = float(oq_info.offset) - in0_scale * float(iq0_info.offset) - in1_scale * float(iq1_info.offset); + + const auto in0_scale_6p10 = static_cast<int16_t>(support::cpp11::lround(in0_scale * 1024.f)); + const auto in1_scale_6p10 = static_cast<int16_t>(support::cpp11::lround(in1_scale * 1024.f)); + const auto offset_22p10 = static_cast<int32_t>(support::cpp11::lround(offset * 1024.f)); + + if(is_broadcast_across_x) + { + // Prefix: a = non-broadcast, b = broadcast. + + const auto is_broadcast_input_1 = in1_win.x().step() == 0; + auto a_win = is_broadcast_input_1 ? in0_win : in1_win; + auto b_win = is_broadcast_input_1 ? in1_win : in0_win; + const auto a_tensor = is_broadcast_input_1 ? src0 : src1; + const auto b_tensor = is_broadcast_input_1 ? src1 : src0; + + const auto a_scale_6p10 = is_broadcast_input_1 ? in0_scale_6p10 : in1_scale_6p10; + const auto b_scale = is_broadcast_input_1 ? in1_scale : in0_scale; + const auto a_vscale_6p10 = wrapper::vdup_n(a_scale_6p10, wrapper::traits::vector_64_tag()); + + // Clear the x dimension on the execution window as we process the whole row each iteration. + a_win.set(Window::DimX, Window::Dimension(0, 1, 1)); + + Iterator a_input_it(a_tensor, a_win); + Iterator b_input_it(b_tensor, b_win); + Iterator out_it(dst, win); + + execute_window_loop(win, [&](const Coordinates &) + { + const auto a_ptr = reinterpret_cast<const ScalarType *>(a_input_it.ptr()); + const auto b_ptr = reinterpret_cast<const ScalarType *>(b_input_it.ptr()); + const auto out_ptr = reinterpret_cast<ScalarType *>(out_it.ptr()); + + const auto b_val = *b_ptr; + const auto b_scaled_22p10 = static_cast<int32_t>(support::cpp11::lround(b_scale * b_val * 1024.f)); + const auto b_vscaled_offseted_22p10 = wrapper::vdup_n(b_scaled_22p10 + offset_22p10, wrapper::traits::vector_128_tag()); + + int x = window_start_x; + + for(; x <= (window_end_x - window_step_x); x += window_step_x) + { + // Load the input. + const auto a_vin_8p0 = wrapper::vloadq(a_ptr + x); + + // Widen the non-broadcast elements to signed 16-bit regardless of the input signedness. + const auto a_vin_16p0_0 = wrapper::vreinterpret(wrapper::vmovl(wrapper::vgetlow(a_vin_8p0))); + const auto a_vin_16p0_1 = wrapper::vreinterpret(wrapper::vmovl(wrapper::vgethigh(a_vin_8p0))); + + // Multiply the non-broadcast elements by the scale factor, add the scaled broadcast elements and the offset. + // Widen and store the result in 32-bit integer. + const auto vout_22p10_00 = wrapper::vmlal(b_vscaled_offseted_22p10, wrapper::vgetlow(a_vin_16p0_0), a_vscale_6p10); + const auto vout_22p10_01 = wrapper::vmlal(b_vscaled_offseted_22p10, wrapper::vgethigh(a_vin_16p0_0), a_vscale_6p10); + const auto vout_22p10_10 = wrapper::vmlal(b_vscaled_offseted_22p10, wrapper::vgetlow(a_vin_16p0_1), a_vscale_6p10); + const auto vout_22p10_11 = wrapper::vmlal(b_vscaled_offseted_22p10, wrapper::vgethigh(a_vin_16p0_1), a_vscale_6p10); + + // Remove 2 bits of the fractional part, round, narrow to 16-bit and saturate the result. + const auto vout_8p8_0 = wrapper::vcombine( + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_00), + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_01) + ); + const auto vout_8p8_1 = wrapper::vcombine( + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_10), + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_11) + ); + + // Remove 8 bits of the fractional part, round, narrow to 8-bit and saturate the result. + const auto vout_8p0 = wrapper::vcombine( + wrapper::vqrshrn<8>(vout_8p8_0), + wrapper::vqrshrn<8>(vout_8p8_1) + ); + + // Store the result. + wrapper::vstore(out_ptr + x, vout_8p0); + } + + // Process the left-over elements. + for(; x < window_end_x; ++x) + { + out_ptr[x] = utility::clamp<int32_t, ScalarType>((int32_t(a_ptr[x]) * a_scale_6p10 + b_scaled_22p10 + offset_22p10) >> 10); + } + }, + b_input_it, a_input_it, out_it); + } + else + { + const auto vscale0_6p10 = wrapper::vdup_n(in0_scale_6p10, wrapper::traits::vector_64_tag()); + const auto vscale1_6p10 = wrapper::vdup_n(in1_scale_6p10, wrapper::traits::vector_64_tag()); + const auto voffset_22p10 = wrapper::vdup_n(offset_22p10, wrapper::traits::vector_128_tag()); + + // Clear the x dimension on the execution window as we process the whole row each iteration. + in0_win.set(Window::DimX, Window::Dimension(0, 1, 1)); + in1_win.set(Window::DimX, Window::Dimension(0, 1, 1)); + + Iterator in0_it(src0, in0_win); + Iterator in1_it(src1, in1_win); + Iterator out_it(dst, win); + + execute_window_loop(win, [&](const Coordinates &) + { + const auto in0_ptr = reinterpret_cast<const ScalarType *>(in0_it.ptr()); + const auto in1_ptr = reinterpret_cast<const ScalarType *>(in1_it.ptr()); + const auto out_ptr = reinterpret_cast<ScalarType *>(out_it.ptr()); + + int x = window_start_x; + + for(; x <= (window_end_x - window_step_x); x += window_step_x) + { + // Load the inputs. + const auto vin0_8p0 = wrapper::vloadq(in0_ptr + x); + const auto vin1_8p0 = wrapper::vloadq(in1_ptr + x); + + // Widen the input elements to signed 16-bit regardless of the input signedness. + const auto vin0_16p0_0 = wrapper::vreinterpret(wrapper::vmovl(wrapper::vgetlow(vin0_8p0))); + const auto vin0_16p0_1 = wrapper::vreinterpret(wrapper::vmovl(wrapper::vgethigh(vin0_8p0))); + const auto vin1_16p0_0 = wrapper::vreinterpret(wrapper::vmovl(wrapper::vgetlow(vin1_8p0))); + const auto vin1_16p0_1 = wrapper::vreinterpret(wrapper::vmovl(wrapper::vgethigh(vin1_8p0))); + + // Multiply the input elements by the scale factor and add the offset. + // Widen and store the result in 32-bit integer. + const auto vscaled0_offseted_22p10_00 = wrapper::vmlal(voffset_22p10, wrapper::vgetlow(vin0_16p0_0), vscale0_6p10); + const auto vscaled0_offseted_22p10_01 = wrapper::vmlal(voffset_22p10, wrapper::vgethigh(vin0_16p0_0), vscale0_6p10); + const auto vscaled0_offseted_22p10_10 = wrapper::vmlal(voffset_22p10, wrapper::vgetlow(vin0_16p0_1), vscale0_6p10); + const auto vscaled0_offseted_22p10_11 = wrapper::vmlal(voffset_22p10, wrapper::vgethigh(vin0_16p0_1), vscale0_6p10); + + const auto vout_22p10_00 = wrapper::vmlal(vscaled0_offseted_22p10_00, wrapper::vgetlow(vin1_16p0_0), vscale1_6p10); + const auto vout_22p10_01 = wrapper::vmlal(vscaled0_offseted_22p10_01, wrapper::vgethigh(vin1_16p0_0), vscale1_6p10); + const auto vout_22p10_10 = wrapper::vmlal(vscaled0_offseted_22p10_10, wrapper::vgetlow(vin1_16p0_1), vscale1_6p10); + const auto vout_22p10_11 = wrapper::vmlal(vscaled0_offseted_22p10_11, wrapper::vgethigh(vin1_16p0_1), vscale1_6p10); + + // Remove 2 bits of the fractional part, round, narrow to 16-bit and saturate the result. + const auto vout_8p8_0 = wrapper::vcombine( + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_00), + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_01) + ); + const auto vout_8p8_1 = wrapper::vcombine( + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_10), + wrapper::vqrshrn_ex<2, ScalarType>(vout_22p10_11) + ); + + // Remove 8 bits of the fractional part, round, narrow to 8-bit and saturate the result. + const auto vout_8p0 = wrapper::vcombine( + wrapper::vqrshrn<8>(vout_8p8_0), + wrapper::vqrshrn<8>(vout_8p8_1) + ); + + // Store the result. + wrapper::vstore(out_ptr + x, vout_8p0); + } + + // Process the left-over elements. + for(; x < window_end_x; ++x) + { + out_ptr[x] = utility::clamp<int32_t, ScalarType>( + (int32_t(in0_ptr[x]) * in0_scale_6p10 + int32_t(in1_ptr[x]) * in1_scale_6p10 + offset_22p10) >> 10); + } + }, + in0_it, in1_it, out_it); + } +} + template void add_same_neon<float>(const ITensor *src0, const ITensor *src1, ITensor *dst, const ConvertPolicy &policy, const Window &window); template void add_same_neon<uint8_t>(const ITensor *src0, const ITensor *src1, ITensor *dst, const ConvertPolicy &policy, const Window &window); template void add_same_neon<int32_t>(const ITensor *src0, const ITensor *src1, ITensor *dst, const ConvertPolicy &policy, const Window &window); @@ -175,5 +392,8 @@ template void add_same_neon_as_1d_array<int16_t>(const ITensor *src0, const ITen template void add_same_neon_as_1d_array<float16_t>(const ITensor *src0, const ITensor *src1, ITensor *dst, const ConvertPolicy &policy, const Window &window); #endif /* (__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) */ +template void add_q8_neon_fixedpoint<int8_t>(const ITensor *src0, const ITensor *src1, ITensor *dst, const ConvertPolicy &policy, const Window &window); +template void add_q8_neon_fixedpoint<uint8_t>(const ITensor *src0, const ITensor *src1, ITensor *dst, const ConvertPolicy &policy, const Window &window); + } // namespace cpu } // namespace arm_compute |