5ceca1a4d8
Unlike [dcz]scal, sscal still used the original GotoBLAS SSE code from scal_sse.S. This code follows dscal as closely as possible, except for the inc_x > 1 code for which a plain C loop is used much like the one in cscal.c, instead of an adaptation of the SSE2 asm code of dscal.c (I tried but the performance wasn't better than the plain C loop).
197 lines
3.8 KiB
C
197 lines
3.8 KiB
C
/***************************************************************************
|
|
Copyright (c) 2013 - 2022, The OpenBLAS Project
|
|
All rights reserved.
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the
|
|
distribution.
|
|
3. Neither the name of the OpenBLAS project nor the names of
|
|
its contributors may be used to endorse or promote products
|
|
derived from this software without specific prior written permission.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
|
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*****************************************************************************/
|
|
|
|
#include "common.h"
|
|
|
|
#if defined(HASWELL) || defined(ZEN)
|
|
#include "sscal_microk_haswell-2.c"
|
|
#elif defined (SKYLAKEX) || defined (COOPERLAKE) || defined (SAPPHIRERAPIDS)
|
|
#include "sscal_microk_skylakex-2.c"
|
|
#endif
|
|
|
|
|
|
#if !defined(HAVE_KERNEL_16)
|
|
|
|
static void sscal_kernel_16( BLASLONG n, FLOAT *da , FLOAT *x )
|
|
{
|
|
|
|
BLASLONG i;
|
|
FLOAT alpha = *da;
|
|
|
|
for( i=0; i<n; i+=8 )
|
|
{
|
|
x[0] *= alpha;
|
|
x[1] *= alpha;
|
|
x[2] *= alpha;
|
|
x[3] *= alpha;
|
|
x[4] *= alpha;
|
|
x[5] *= alpha;
|
|
x[6] *= alpha;
|
|
x[7] *= alpha;
|
|
x+=8;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
static void sscal_kernel_16_zero( BLASLONG n, FLOAT *alpha , FLOAT *x )
|
|
{
|
|
|
|
BLASLONG i;
|
|
for( i=0; i<n; i+=8 )
|
|
{
|
|
x[0] = 0.0;
|
|
x[1] = 0.0;
|
|
x[2] = 0.0;
|
|
x[3] = 0.0;
|
|
x[4] = 0.0;
|
|
x[5] = 0.0;
|
|
x[6] = 0.0;
|
|
x[7] = 0.0;
|
|
x+=8;
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
static void sscal_kernel_inc_8(BLASLONG n, FLOAT *alpha, FLOAT *x, BLASLONG inc_x) __attribute__ ((noinline));
|
|
|
|
static void sscal_kernel_inc_8(BLASLONG n, FLOAT *alpha, FLOAT *x, BLASLONG inc_x)
|
|
{
|
|
|
|
BLASLONG i;
|
|
BLASLONG inc_x2 = 2 * inc_x;
|
|
BLASLONG inc_x3 = inc_x2 + inc_x;
|
|
FLOAT t0,t1,t2,t3;
|
|
FLOAT da = alpha[0];
|
|
|
|
for ( i=0; i<n; i+=4 )
|
|
{
|
|
t0 = da * x[0];
|
|
t1 = da * x[inc_x];
|
|
t2 = da * x[inc_x2];
|
|
t3 = da * x[inc_x3];
|
|
|
|
x[0] = t0;
|
|
x[inc_x] = t1;
|
|
x[inc_x2] = t2;
|
|
x[inc_x3] = t3;
|
|
|
|
x+=4*inc_x;
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2)
|
|
{
|
|
BLASLONG i=0,j=0;
|
|
|
|
if ( inc_x != 1 )
|
|
{
|
|
|
|
if ( da == 0.0 )
|
|
{
|
|
|
|
BLASLONG n1 = n & -2;
|
|
|
|
while(j < n1)
|
|
{
|
|
|
|
x[i]=0.0;
|
|
x[i+inc_x]=0.0;
|
|
i += 2*inc_x ;
|
|
j+=2;
|
|
|
|
}
|
|
|
|
while(j < n)
|
|
{
|
|
|
|
x[i]=0.0;
|
|
i += inc_x ;
|
|
j++;
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
BLASLONG n1 = n & -8;
|
|
if ( n1 > 0 )
|
|
{
|
|
sscal_kernel_inc_8(n1, &da, x, inc_x);
|
|
i = n1 * inc_x;
|
|
j = n1;
|
|
}
|
|
|
|
while(j < n)
|
|
{
|
|
|
|
x[i] *= da;
|
|
i += inc_x ;
|
|
j++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
BLASLONG n1 = n & -16;
|
|
if ( n1 > 0 )
|
|
{
|
|
if ( da == 0.0 )
|
|
sscal_kernel_16_zero(n1 , &da , x);
|
|
else
|
|
sscal_kernel_16(n1 , &da , x);
|
|
}
|
|
|
|
if ( da == 0.0 )
|
|
{
|
|
for ( i=n1 ; i<n; i++ )
|
|
{
|
|
x[i] = 0.0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
for ( i=n1 ; i<n; i++ )
|
|
{
|
|
x[i] *= da;
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
|