diff options
Diffstat (limited to 'src/cpu/kernels/activation/generic/neon/impl.h')
| -rw-r--r-- | src/cpu/kernels/activation/generic/neon/impl.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/cpu/kernels/activation/generic/neon/impl.h b/src/cpu/kernels/activation/generic/neon/impl.h index 2dd239e3a1..35abcb5408 100644 --- a/src/cpu/kernels/activation/generic/neon/impl.h +++ b/src/cpu/kernels/activation/generic/neon/impl.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2020-2021 Arm Limited. + * Copyright (c) 2020-2022 Arm Limited. * * SPDX-License-Identifier: MIT * @@ -77,7 +77,9 @@ void fp_neon_activation_impl(const ITensor *src, ITensor *dst, const ActivationL const auto const_0 = wrapper::vdup_n(static_cast<T>(0.f), ExactTagType{}); const auto const_6 = wrapper::vdup_n(static_cast<T>(6.f), ExactTagType{}); const auto const_3 = wrapper::vdup_n(static_cast<T>(3.f), ExactTagType{}); + const auto const_inv_2 = wrapper::vdup_n(static_cast<T>(0.5f), ExactTagType{}); const auto const_inv_6 = wrapper::vdup_n(static_cast<T>(0.166666667f), ExactTagType{}); + const auto const_inv_sqrt_2 = wrapper::vdup_n(static_cast<T>(0.70710678118f), ExactTagType{}); constexpr float soft_relu_thresh = 12.f; const auto vsoft_relu_thresh = wrapper::vdup_n(static_cast<T>(soft_relu_thresh), ExactTagType{}); const auto va = wrapper::vdup_n(static_cast<T>(act_info.a()), ExactTagType{}); @@ -146,6 +148,9 @@ void fp_neon_activation_impl(const ITensor *src, ITensor *dst, const ActivationL case ActivationLayerInfo::ActivationFunction::HARD_SWISH: tmp = wrapper::vmul(vin, wrapper::vmul(const_inv_6, wrapper::vmin(const_6, wrapper::vmax(const_0, wrapper::vadd(vin, const_3))))); break; + case ActivationLayerInfo::ActivationFunction::GELU: + tmp = wrapper::vmul(vin, wrapper::vmul(const_inv_2, wrapper::vadd(const_1, wrapper::verf(wrapper::vmul(vin, const_inv_sqrt_2))))); + break; default: ARM_COMPUTE_ERROR("Unsupported activation function"); } @@ -200,6 +205,9 @@ void fp_neon_activation_impl(const ITensor *src, ITensor *dst, const ActivationL case ActivationLayerInfo::ActivationFunction::HARD_SWISH: tmp = in * ((std::min(std::max((in + 3), 0.0f), 6.0f)) * 0.166666667f); break; + case ActivationLayerInfo::ActivationFunction::GELU: + tmp = in * static_cast<T>(0.5f * (1.0f + erff(static_cast<float>(in) / 1.41421356237f))); + break; default: ARM_COMPUTE_ERROR("Unsupported activation function"); } |