67 lines
2.8 KiB
C
67 lines
2.8 KiB
C
/***************************************************************************
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Copyright (c) 2022, Arm Ltd
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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
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "common.h"
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#include <arm_sve.h>
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#ifdef DOUBLE
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#define SVE_TYPE svfloat64_t
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#define SVE_ZERO svdup_f64(0.0)
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#define SVE_WHILELT svwhilelt_b64
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#define SVE_ALL svptrue_b64()
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#define SVE_WIDTH svcntd()
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#else
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#define SVE_TYPE svfloat32_t
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#define SVE_ZERO svdup_f32(0.0)
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#define SVE_WHILELT svwhilelt_b32
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#define SVE_ALL svptrue_b32()
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#define SVE_WIDTH svcntw()
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#endif
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static FLOAT dot_kernel_sve(BLASLONG n, FLOAT *x, FLOAT *y) {
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SVE_TYPE acc_a = SVE_ZERO;
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SVE_TYPE acc_b = SVE_ZERO;
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BLASLONG sve_width = SVE_WIDTH;
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for (BLASLONG i = 0; i < n; i += sve_width * 2) {
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svbool_t pg_a = SVE_WHILELT((uint64_t)i, (uint64_t)n);
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svbool_t pg_b = SVE_WHILELT((uint64_t)(i + sve_width), (uint64_t)n);
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SVE_TYPE x_vec_a = svld1(pg_a, &x[i]);
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SVE_TYPE y_vec_a = svld1(pg_a, &y[i]);
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SVE_TYPE x_vec_b = svld1(pg_b, &x[i + sve_width]);
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SVE_TYPE y_vec_b = svld1(pg_b, &y[i + sve_width]);
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acc_a = svmla_m(pg_a, acc_a, x_vec_a, y_vec_a);
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acc_b = svmla_m(pg_b, acc_b, x_vec_b, y_vec_b);
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}
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return svaddv(SVE_ALL, acc_a) + svaddv(SVE_ALL, acc_b);
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}
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