| // Auto-generated file. Do not edit! |
| // Template: src/f32-qs8-vcvt/sse.c.in |
| // Generator: tools/xngen |
| // |
| // Copyright 2021 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <emmintrin.h> |
| |
| #include <xnnpack/common.h> |
| #include <xnnpack/vcvt.h> |
| |
| |
| void xnn_f32_qu8_vcvt_ukernel__sse2_x8( |
| size_t n, |
| const float* x, |
| uint8_t* y, |
| const union xnn_f32_qu8_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS |
| { |
| assert(n != 0); |
| assert(n % sizeof(float) == 0); |
| assert(x != NULL); |
| assert(y != NULL); |
| |
| const __m128 vscale = _mm_load_ps(params->sse2.scale); |
| const __m128 voutput_max_less_zero_point = _mm_load_ps(params->sse2.output_max_less_zero_point); |
| const __m128i voutput_zero_point = _mm_load_si128((const __m128i*) params->sse2.output_zero_point); |
| const __m128i voutput_min = _mm_load_si128((const __m128i*) params->sse2.output_min); |
| |
| for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) { |
| __m128 vx_lo = _mm_loadu_ps(x); |
| __m128 vx_hi = _mm_loadu_ps(x + 4); |
| x += 8; |
| |
| vx_lo = _mm_mul_ps(vx_lo, vscale); |
| vx_hi = _mm_mul_ps(vx_hi, vscale); |
| |
| vx_lo = _mm_min_ps(vx_lo, voutput_max_less_zero_point); |
| vx_hi = _mm_min_ps(vx_hi, voutput_max_less_zero_point); |
| |
| const __m128i vy_lo = _mm_cvtps_epi32(vx_lo); |
| const __m128i vy_hi = _mm_cvtps_epi32(vx_hi); |
| |
| __m128i vy = _mm_packs_epi32(vy_lo, vy_hi); |
| vy = _mm_adds_epi16(vy, voutput_zero_point); |
| vy = _mm_packus_epi16(vy, vy); |
| vy = _mm_max_epu8(vy, voutput_min); |
| |
| _mm_storel_epi64((__m128i*) y, vy); |
| y += 8; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| __m128 vx_lo = _mm_loadu_ps(x); |
| const float* x_hi = (const float*) ((uintptr_t) x + (n & (4 * sizeof(float)))); |
| __m128 vx_hi = _mm_loadu_ps(x_hi); |
| |
| vx_lo = _mm_mul_ps(vx_lo, vscale); |
| vx_hi = _mm_mul_ps(vx_hi, vscale); |
| |
| vx_lo = _mm_min_ps(vx_lo, voutput_max_less_zero_point); |
| vx_hi = _mm_min_ps(vx_hi, voutput_max_less_zero_point); |
| |
| const __m128i vy_lo = _mm_cvtps_epi32(vx_lo); |
| const __m128i vy_hi = _mm_cvtps_epi32(vx_hi); |
| |
| __m128i vy = _mm_packs_epi32(vy_lo, vy_hi); |
| vy = _mm_adds_epi16(vy, voutput_zero_point); |
| vy = _mm_packus_epi16(vy, vy); |
| vy = _mm_max_epu8(vy, voutput_min); |
| |
| if (n & (4 * sizeof(float))) { |
| *((uint32_t*) y) = (uint32_t) _mm_cvtsi128_si32(vy); |
| y += 4; |
| vy = _mm_srli_epi64(vy, 32); |
| } |
| { |
| uint32_t vy_lo = (uint32_t) _mm_cvtsi128_si32(vy); |
| if (n & (2 * sizeof(float))) { |
| *((uint16_t*) y) = (uint16_t) vy_lo; |
| y += 2; |
| vy_lo >>= 16; |
| } |
| if (n & (1 * sizeof(float))) { |
| *y = (uint8_t) vy_lo; |
| } |
| } |
| } |
| } |