| /* |
| * Copyright (c) 2017 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. |
| */ |
| namespace arm_compute |
| { |
| inline int32x4_t rounding_divide_by_pow2(int32x4_t x, int exponent) |
| { |
| const int32x4_t shift_vec = vdupq_n_s32(-exponent); |
| const int32x4_t fixup = vshrq_n_s32(vandq_s32(x, shift_vec), 31); |
| const int32x4_t fixed_up_x = vqaddq_s32(x, fixup); |
| return vrshlq_s32(fixed_up_x, shift_vec); |
| } |
| |
| inline qasymm8x16_t vmlaq_qasymm8(qasymm8x16_t vd, float32x4_t vs, float32x4_t vo) |
| { |
| // Convert uint8 vectors to uint16 vectors |
| const uint8x8_t vd_low = vget_low_u8(vd); |
| const uint8x8_t vd_high = vget_high_u8(vd); |
| uint16x8_t vd_low_u16x8 = vmovl_u8(vd_low); |
| uint16x8_t vd_high_u16x8 = vmovl_u8(vd_high); |
| // Convert uint16 vectors to uint32 vectors |
| uint32x4_t A_u32x4 = vmovl_u16(vget_low_u16(vd_low_u16x8)); |
| uint32x4_t B_u32x4 = vmovl_u16(vget_high_u16(vd_low_u16x8)); |
| uint32x4_t C_u32x4 = vmovl_u16(vget_low_u16(vd_high_u16x8)); |
| uint32x4_t D_u32x4 = vmovl_u16(vget_high_u16(vd_high_u16x8)); |
| // Convert uint32 vectors to float32 vectors |
| float32x4_t A_f32x4 = vcvtq_f32_u32(A_u32x4); |
| float32x4_t B_f32x4 = vcvtq_f32_u32(B_u32x4); |
| float32x4_t C_f32x4 = vcvtq_f32_u32(C_u32x4); |
| float32x4_t D_f32x4 = vcvtq_f32_u32(D_u32x4); |
| // vd = vd*vs + vo |
| A_f32x4 = vmlaq_f32(vo, A_f32x4, vs); |
| B_f32x4 = vmlaq_f32(vo, B_f32x4, vs); |
| C_f32x4 = vmlaq_f32(vo, C_f32x4, vs); |
| D_f32x4 = vmlaq_f32(vo, D_f32x4, vs); |
| // Convert float32 vectors to uint32 vectors |
| A_u32x4 = vcvtq_u32_f32(A_f32x4); |
| B_u32x4 = vcvtq_u32_f32(B_f32x4); |
| C_u32x4 = vcvtq_u32_f32(C_f32x4); |
| D_u32x4 = vcvtq_u32_f32(D_f32x4); |
| // Convert uint32 vectors to uint16 vectors (with saturation) |
| vd_low_u16x8 = vcombine_u16(vqmovn_u32(A_u32x4), vqmovn_u32(B_u32x4)); |
| vd_high_u16x8 = vcombine_u16(vqmovn_u32(C_u32x4), vqmovn_u32(D_u32x4)); |
| // convert uint16 vectors to uint8 vectors (with saturation) |
| return vcombine_u8(vqmovn_u16(vd_low_u16x8), vqmovn_u16(vd_high_u16x8)); |
| } |
| } // namespace arm_compute |