171 lines
5.7 KiB
C
171 lines
5.7 KiB
C
/***************************************************************************
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Copyright (c) 2013-2018,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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static double dsdot_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y)
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{
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double dot;
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__asm__ volatile (
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"vzero %%v0 \n\t"
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"srlg %%r0,%1,4 \n\t"
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"xgr %%r1,%%r1 \n\t"
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"0: \n\t"
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"pfd 1,1024(%%r1,%2) \n\t"
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"pfd 1,1024(%%r1,%3) \n\t"
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"vlef %%v16,0(%%r1,%2),0 \n\t"
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"vlef %%v16,4(%%r1,%2),2 \n\t"
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"vlef %%v17,8(%%r1,%2),0 \n\t"
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"vlef %%v17,12(%%r1,%2),2 \n\t"
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"vlef %%v18,16(%%r1,%2),0 \n\t"
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"vlef %%v18,20(%%r1,%2),2 \n\t"
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"vlef %%v19,24(%%r1,%2),0 \n\t"
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"vlef %%v19,28(%%r1,%2),2 \n\t"
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"vlef %%v20,32(%%r1,%2),0 \n\t"
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"vlef %%v20,36(%%r1,%2),2 \n\t"
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"vlef %%v21,40(%%r1,%2),0 \n\t"
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"vlef %%v21,44(%%r1,%2),2 \n\t"
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"vlef %%v22,48(%%r1,%2),0 \n\t"
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"vlef %%v22,52(%%r1,%2),2 \n\t"
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"vlef %%v23,56(%%r1,%2),0 \n\t"
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"vlef %%v23,60(%%r1,%2),2 \n\t"
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"vflls %%v16,%%v16 \n\t"
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"vflls %%v17,%%v17 \n\t"
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"vflls %%v18,%%v18 \n\t"
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"vflls %%v19,%%v19 \n\t"
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"vflls %%v20,%%v20 \n\t"
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"vflls %%v21,%%v21 \n\t"
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"vflls %%v22,%%v22 \n\t"
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"vflls %%v23,%%v23 \n\t"
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"vlef %%v24,0(%%r1,%3),0 \n\t"
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"vlef %%v24,4(%%r1,%3),2 \n\t"
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"vflls %%v24,%%v24 \n\t"
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"vfmadb %%v0,%%v16,%%v24,%%v0 \n\t"
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"vlef %%v25,8(%%r1,%3),0 \n\t"
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"vlef %%v25,12(%%r1,%3),2 \n\t"
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"vflls %%v25,%%v25 \n\t"
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"vfmadb %%v0,%%v17,%%v25,%%v0 \n\t"
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"vlef %%v26,16(%%r1,%3),0 \n\t"
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"vlef %%v26,20(%%r1,%3),2 \n\t"
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"vflls %%v26,%%v26 \n\t"
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"vfmadb %%v0,%%v18,%%v26,%%v0 \n\t"
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"vlef %%v27,24(%%r1,%3),0 \n\t"
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"vlef %%v27,28(%%r1,%3),2 \n\t"
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"vflls %%v27,%%v27 \n\t"
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"vfmadb %%v0,%%v19,%%v27,%%v0 \n\t"
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"vlef %%v28,32(%%r1,%3),0 \n\t"
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"vlef %%v28,36(%%r1,%3),2 \n\t"
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"vflls %%v28,%%v28 \n\t"
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"vfmadb %%v0,%%v20,%%v28,%%v0 \n\t"
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"vlef %%v29,40(%%r1,%3),0 \n\t"
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"vlef %%v29,44(%%r1,%3),2 \n\t"
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"vflls %%v29,%%v29 \n\t"
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"vfmadb %%v0,%%v21,%%v29,%%v0 \n\t"
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"vlef %%v30,48(%%r1,%3),0 \n\t"
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"vlef %%v30,52(%%r1,%3),2 \n\t"
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"vflls %%v30,%%v30 \n\t"
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"vfmadb %%v0,%%v22,%%v30,%%v0 \n\t"
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"vlef %%v31,56(%%r1,%3),0 \n\t"
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"vlef %%v31,60(%%r1,%3),2 \n\t"
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"vflls %%v31,%%v31 \n\t"
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"vfmadb %%v0,%%v23,%%v31,%%v0 \n\t"
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"agfi %%r1,64 \n\t"
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"brctg %%r0,0b \n\t"
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"vrepg %%v1,%%v0,1 \n\t"
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"adbr %%f0,%%f1 \n\t"
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"ldr %0,%%f0 "
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:"=f"(dot)
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:"r"(n),"ZR"((const FLOAT (*)[n])x),"ZR"((const FLOAT (*)[n])y)
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:"memory","cc","r0","r1","v0","v1","v2","v3","v16","v17","v18","v19","v20","v21","v22","v23","v24","v25","v26","v27","v28","v29","v30","v31"
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);
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return dot;
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}
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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;
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BLASLONG ix=0,iy=0;
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double dot = 0.0 ;
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if ( n <= 0 ) return(dot);
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if ( (inc_x == 1) && (inc_y == 1) )
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{
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BLASLONG n1 = n & -16;
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if ( n1 )
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dot = dsdot_kernel_16(n1,x,y);
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i = n1;
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while(i < n)
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{
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dot += (double) y[i] * (double) x[i] ;
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i++ ;
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}
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return(dot);
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}
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BLASLONG n1 = n & -2;
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while(i < n1)
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{
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dot += (double) y[iy] * (double) x[ix];
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dot += (double) y[iy+inc_y] * (double) x[ix+inc_x];
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ix += inc_x*2 ;
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iy += inc_y*2 ;
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i+=2 ;
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}
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while(i < n)
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{
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dot += (double) y[iy] * (double) x[ix] ;
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ix += inc_x ;
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iy += inc_y ;
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i++ ;
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}
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return(dot);
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}
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