165 lines
5.9 KiB
C
165 lines
5.9 KiB
C
/***************************************************************************
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Copyright (c) 2021, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <stdio.h>
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#include <immintrin.h>
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#include "common.h"
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int CNAME(BLASLONG m, BLASLONG n, IFLOAT *a, BLASLONG lda, IFLOAT *b){
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BLASLONG i, j;
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IFLOAT *boffset0, *boffset1;
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boffset0 = b;
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BLASLONG n32 = n & ~31;
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BLASLONG m4 = m & ~3;
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BLASLONG m2 = m & ~1;
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uint32_t permute_table[] = {
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0x00, 0x01, 0x02, 0x03, 0x10, 0x11, 0x12, 0x13, 0x04, 0x05, 0x06, 0x07, 0x14, 0x15, 0x16, 0x17,
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0x08, 0x09, 0x0a, 0x0b, 0x18, 0x19, 0x1a, 0x1b, 0x0c, 0x0d, 0x0e, 0x0f, 0x1c, 0x1d, 0x1e, 0x1f,
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};
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__m512i idx_lo = _mm512_loadu_si512(permute_table);
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__m512i idx_hi = _mm512_loadu_si512(permute_table + 16);
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for (j = 0; j < n32; j += 32) {
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/* process 2x16 n at the same time */
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boffset1 = boffset0 + m * 16;
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for (i = 0; i < m4; i += 4) {
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/* bf16 fma need special memory layout:
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* for memory layout like below:
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* a00, a01, a02, a03, a04, a05 ....
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* a10, a11, a12, a13, a14, a15 ....
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* need to copy as:
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* a00, a10, a01, a11, a02, a12, a03, a13, ...
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*/
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__m512i a0 = _mm512_loadu_si512(&a[(i + 0)*lda + j]);
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__m512i a1 = _mm512_loadu_si512(&a[(i + 1)*lda + j]);
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__m512i a2 = _mm512_loadu_si512(&a[(i + 2)*lda + j]);
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__m512i a3 = _mm512_loadu_si512(&a[(i + 3)*lda + j]);
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__m512i a00 = _mm512_unpacklo_epi16(a0, a1);
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__m512i a01 = _mm512_unpackhi_epi16(a0, a1);
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__m512i a10 = _mm512_unpacklo_epi16(a2, a3);
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__m512i a11 = _mm512_unpackhi_epi16(a2, a3);
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a0 = _mm512_permutex2var_epi32(a00, idx_lo, a01);
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a1 = _mm512_permutex2var_epi32(a00, idx_hi, a01);
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a2 = _mm512_permutex2var_epi32(a10, idx_lo, a11);
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a3 = _mm512_permutex2var_epi32(a10, idx_hi, a11);
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_mm512_storeu_si512(boffset0, a0);
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_mm512_storeu_si512(boffset1, a1);
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_mm512_storeu_si512(boffset0 + 32, a2);
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_mm512_storeu_si512(boffset1 + 32, a3);
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boffset0 += 64;
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boffset1 += 64;
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}
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for (; i < m2; i += 2) {
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__m512i a0 = _mm512_loadu_si512(&a[(i + 0)*lda + j]);
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__m512i a1 = _mm512_loadu_si512(&a[(i + 1)*lda + j]);
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__m512i a00 = _mm512_unpacklo_epi16(a0, a1);
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__m512i a01 = _mm512_unpackhi_epi16(a0, a1);
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a0 = _mm512_permutex2var_epi32(a00, idx_lo, a01);
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a1 = _mm512_permutex2var_epi32(a00, idx_hi, a01);
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_mm512_storeu_si512(boffset0, a0);
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_mm512_storeu_si512(boffset1, a1);
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boffset0 += 32;
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boffset1 += 32;
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}
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for (; i < m; i++) {
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/* just copy the only remains row */
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__m256i a0 = _mm256_loadu_si256((void *)&a[(i + 0)*lda + j]);
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__m256i a1 = _mm256_loadu_si256((void *)&a[(i + 0)*lda + j + 16]);
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_mm256_storeu_si256((void *)boffset0, a0);
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_mm256_storeu_si256((void *)boffset1, a1);
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boffset0 += 16;
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boffset1 += 16;
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}
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boffset0 = boffset1;
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}
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if (j < n) {
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uint32_t remains = n - j;
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__mmask32 r_mask = (1UL << remains) - 1;
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if (remains > 16) {
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boffset1 = boffset0 + m * 16;
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uint32_t tail1 = remains - 16;
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__mmask16 w_mask1 = (1UL << tail1) - 1;
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for (i = 0; i < m2; i += 2) {
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__m512i a0 = _mm512_maskz_loadu_epi16(r_mask, &a[(i + 0)*lda + j]);
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__m512i a1 = _mm512_maskz_loadu_epi16(r_mask, &a[(i + 1)*lda + j]);
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__m512i a00 = _mm512_unpacklo_epi16(a0, a1);
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__m512i a01 = _mm512_unpackhi_epi16(a0, a1);
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a0 = _mm512_permutex2var_epi32(a00, idx_lo, a01);
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a1 = _mm512_permutex2var_epi32(a00, idx_hi, a01);
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_mm512_storeu_si512(boffset0, a0);
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_mm512_mask_storeu_epi32(boffset1, w_mask1, a1);
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boffset0 += 32;
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boffset1 += 2 * tail1;
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}
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for (; i < m; i++) {
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__m256i a0 = _mm256_loadu_si256((void *)&a[(i + 0)*lda + j]);
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__m256i a1 = _mm256_maskz_loadu_epi16(w_mask1, (void *)&a[(i + 0)*lda + j + 16]);
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_mm256_storeu_si256((void *)boffset0, a0);
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_mm256_mask_storeu_epi16((void *)boffset1, w_mask1, a1);
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boffset0 += 16;
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boffset1 += tail1;
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}
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} else {
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__mmask16 w_mask = (1UL << remains ) - 1;
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for (i = 0; i < m2; i += 2) {
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__m512i a0 = _mm512_maskz_loadu_epi16(r_mask, &a[(i + 0)*lda + j]);
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__m512i a1 = _mm512_maskz_loadu_epi16(r_mask, &a[(i + 1)*lda + j]);
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__m512i a00 = _mm512_unpacklo_epi16(a0, a1);
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__m512i a01 = _mm512_unpackhi_epi16(a0, a1);
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a0 = _mm512_permutex2var_epi32(a00, idx_lo, a01);
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_mm512_mask_storeu_epi32(boffset0, w_mask, a0);
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boffset0 += 2 * remains;
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}
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for (; i < m; i++) {
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__m256i a0 = _mm256_maskz_loadu_epi16(w_mask, &a[(i + 0)*lda + j]);
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_mm256_mask_storeu_epi16(boffset0, w_mask, a0);
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boffset0 += remains;
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}
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}
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}
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return 0;
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}
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