150 lines
4.6 KiB
C
150 lines
4.6 KiB
C
/***************************************************************************
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Copyright (c) 2013-2017, 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 FLOAT ddot_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y)
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{
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FLOAT 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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"vl %%v16,0(%%r1,%2) \n\t"
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"vl %%v17,16(%%r1,%2) \n\t"
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"vl %%v18,32(%%r1,%2) \n\t"
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"vl %%v19,48(%%r1,%2) \n\t"
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"vl %%v20,64(%%r1,%2) \n\t"
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"vl %%v21,80(%%r1,%2) \n\t"
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"vl %%v22,96(%%r1,%2) \n\t"
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"vl %%v23,112(%%r1,%2) \n\t"
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"vl %%v24,0(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v16,%%v24,%%v0 \n\t"
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"vl %%v25,16(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v17,%%v25,%%v0 \n\t"
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"vl %%v26,32(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v18,%%v26,%%v0 \n\t"
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"vl %%v27,48(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v19,%%v27,%%v0 \n\t"
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"vl %%v28,64(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v20,%%v28,%%v0 \n\t"
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"vl %%v29,80(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v21,%%v29,%%v0 \n\t"
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"vl %%v30,96(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v22,%%v30,%%v0 \n\t"
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"vl %%v31,112(%%r1,%3) \n\t"
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"vfmadb %%v0,%%v23,%%v31,%%v0 \n\t"
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"agfi %%r1,128 \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","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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FLOAT 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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FLOAT 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 = ddot_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 += y[i] * 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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FLOAT temp1 = 0.0;
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FLOAT temp2 = 0.0;
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BLASLONG n1 = n & -4;
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while(i < n1)
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{
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FLOAT m1 = y[iy] * x[ix] ;
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FLOAT m2 = y[iy+inc_y] * x[ix+inc_x] ;
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FLOAT m3 = y[iy+2*inc_y] * x[ix+2*inc_x] ;
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FLOAT m4 = y[iy+3*inc_y] * x[ix+3*inc_x] ;
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ix += inc_x*4 ;
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iy += inc_y*4 ;
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temp1 += m1+m3;
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temp2 += m2+m4;
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i+=4 ;
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}
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while(i < n)
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{
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temp1 += y[iy] * 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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dot = temp1 + temp2;
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return(dot);
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}
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