| // 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. |
| |
| $assert BATCH_TILE % 16 == 0 |
| $assert BATCH_TILE >= 16 |
| $SIMD_TILE = BATCH_TILE // 16 |
| #include <assert.h> |
| |
| #include <immintrin.h> |
| |
| #include <xnnpack/common.h> |
| #include <xnnpack/intrinsics-polyfill.h> |
| #include <xnnpack/vcvt.h> |
| |
| |
| void xnn_f32_f16_vcvt_ukernel__avx512skx_x${BATCH_TILE}( |
| size_t n, |
| const float* input, |
| void* output, |
| const union xnn_f32_f16_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) |
| { |
| assert(n != 0); |
| assert(n % sizeof(float) == 0); |
| assert(input != NULL); |
| assert(output != NULL); |
| |
| uint16_t* o = (uint16_t*) output; |
| $if BATCH_TILE > 16: |
| for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) { |
| const __m512 vf0 = _mm512_loadu_ps(input); |
| $for N in range(1, SIMD_TILE): |
| const __m512 vf${N} = _mm512_loadu_ps(input + ${N * 16}); |
| input += ${BATCH_TILE}; |
| |
| _mm256_storeu_si256((__m256i*) o, _mm512_cvtps_ph(vf0, _MM_FROUND_NO_EXC)); |
| $for N in range(1, SIMD_TILE): |
| _mm256_storeu_si256((__m256i*) (o + ${N * 16}), _mm512_cvtps_ph(vf${N}, _MM_FROUND_NO_EXC)); |
| o += ${BATCH_TILE}; |
| } |
| for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) { |
| const __m512 vf = _mm512_loadu_ps(input); |
| input += 16; |
| |
| _mm256_storeu_si256((__m256i*) o, _mm512_cvtps_ph(vf, _MM_FROUND_NO_EXC)); |
| o += 16; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| assert(n >= 1 * sizeof(float)); |
| assert(n <= 15 * sizeof(float)); |
| |
| // Prepare mask for valid elements (depends on n). |
| n >>= 2 /* log2(sizeof(float)) */; |
| const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1))); |
| |
| const __m512 vf = _mm512_maskz_loadu_ps(vmask, input); |
| const __m256i vh = _mm512_cvtps_ph(vf, _MM_FROUND_NO_EXC); |
| _mm256_mask_storeu_epi16(o, vmask, vh); |
| } |
| } |