153 lines
6.9 KiB
C
153 lines
6.9 KiB
C
/***************************************************************************
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Copyright (c) 2023, 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 "common.h"
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double CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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{
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BLASLONG i=0, j=0;
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double dot = 0.0 ;
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if ( n < 1 ) return(dot);
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vfloat64m4_t vr;
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vfloat32m2_t vx, vy;
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unsigned int gvl = 0;
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vfloat64m1_t v_res, v_z0;
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gvl = vsetvlmax_e64m1();
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v_res = vfmv_v_f_f64m1(0, gvl);
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v_z0 = vfmv_v_f_f64m1(0, gvl);
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if(inc_x == 1 && inc_y == 1){
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gvl = vsetvl_e64m4(n);
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vr = vfmv_v_f_f64m4(0, gvl);
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for(i=0,j=0; i<n/gvl; i++){
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vx = vle32_v_f32m2(&x[j], gvl);
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vy = vle32_v_f32m2(&y[j], gvl);
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vr = vfwmacc_vv_f64m4(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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//tail
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if(j < n){
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gvl = vsetvl_e64m4(n-j);
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vx = vle32_v_f32m2(&x[j], gvl);
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vy = vle32_v_f32m2(&y[j], gvl);
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vfloat64m4_t vz = vfmv_v_f_f64m4(0, gvl);
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//vr = vfdot_vv_f32m2(vx, vy, gvl);
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vr = vfwmacc_vv_f64m4(vz, vx, vy, gvl);
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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}else if(inc_y == 1){
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gvl = vsetvl_e64m4(n);
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vr = vfmv_v_f_f64m4(0, gvl);
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int stride_x = inc_x * sizeof(FLOAT);
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for(i=0,j=0; i<n/gvl; i++){
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vx = vlse32_v_f32m2(&x[j*inc_x], stride_x, gvl);
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vy = vle32_v_f32m2(&y[j], gvl);
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vr = vfwmacc_vv_f64m4(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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//tail
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if(j < n){
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gvl = vsetvl_e64m4(n-j);
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vx = vlse32_v_f32m2(&x[j*inc_x], stride_x, gvl);
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vy = vle32_v_f32m2(&y[j], gvl);
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vfloat64m4_t vz = vfmv_v_f_f64m4(0, gvl);
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//vr = vfdot_vv_f32m2(vx, vy, gvl);
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vr = vfwmacc_vv_f64m4(vz, vx, vy, gvl);
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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}else if(inc_x == 1){
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gvl = vsetvl_e64m4(n);
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vr = vfmv_v_f_f64m4(0, gvl);
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int stride_y = inc_y * sizeof(FLOAT);
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for(i=0,j=0; i<n/gvl; i++){
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vx = vle32_v_f32m2(&x[j], gvl);
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vy = vlse32_v_f32m2(&y[j*inc_y], stride_y, gvl);
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vr = vfwmacc_vv_f64m4(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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//tail
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if(j < n){
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gvl = vsetvl_e64m4(n-j);
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vx = vle32_v_f32m2(&x[j], gvl);
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vy = vlse32_v_f32m2(&y[j*inc_y], stride_y, gvl);
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vfloat64m4_t vz = vfmv_v_f_f64m4(0, gvl);
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//vr = vfdot_vv_f32m2(vx, vy, gvl);
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vr = vfwmacc_vv_f64m4(vz, vx, vy, gvl);
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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}else{
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gvl = vsetvl_e64m4(n);
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vr = vfmv_v_f_f64m4(0, gvl);
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int stride_x = inc_x * sizeof(FLOAT);
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int stride_y = inc_y * sizeof(FLOAT);
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for(i=0,j=0; i<n/gvl; i++){
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vx = vlse32_v_f32m2(&x[j*inc_x], stride_x, gvl);
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vy = vlse32_v_f32m2(&y[j*inc_y], stride_y, gvl);
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vr = vfwmacc_vv_f64m4(vr, vx, vy, gvl);
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j += gvl;
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}
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if(j > 0){
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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//tail
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if(j < n){
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gvl = vsetvl_e64m4(n-j);
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vx = vlse32_v_f32m2(&x[j*inc_x], stride_x, gvl);
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vy = vlse32_v_f32m2(&y[j*inc_y], stride_y, gvl);
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vfloat64m4_t vz = vfmv_v_f_f64m4(0, gvl);
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//vr = vfdot_vv_f32m2(vx, vy, gvl);
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vr = vfwmacc_vv_f64m4(vz, vx, vy, gvl);
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v_res = vfredusum_vs_f64m4_f64m1(v_res, vr, v_z0, gvl);
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dot += (double)vfmv_f_s_f64m1_f64(v_res);
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}
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}
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return(dot);
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}
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