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Merge pull request #814 from wernsaar/develop 

added optimized daxpy kernel for POWER8
This commit is contained in:
wernsaar 2016-03-22 15:24:59 +01:00
parent 6f93b53590 0664ba4c97
commit 461cf9ea38
3 changed files with 338 additions and 1 deletions
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2
kernel/power/KERNEL.POWER8
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@ -111,7 +111,7 @@ ZTRSMKERNEL_RT = ../generic/trsm_kernel_RT.c
#ZASUMKERNEL = ../arm/zasum.c
#
#SAXPYKERNEL = ../arm/axpy.c
#DAXPYKERNEL = ../arm/axpy.c
DAXPYKERNEL = daxpy.c
#CAXPYKERNEL = ../arm/zaxpy.c
#ZAXPYKERNEL = ../arm/zaxpy.c
#

136
kernel/power/daxpy.c Normal file
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@ -0,0 +1,136 @@
/***************************************************************************
Copyright (c) 2013-2016, 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.
*****************************************************************************/
/**************************************************************************************
* 2016/03/22 Werner Saar (wernsaar@googlemail.com)
* BLASTEST : OK
* CTEST : OK
* TEST : OK
* LAPACK-TEST : OK
**************************************************************************************/
#include "common.h"
#if defined(POWER8)
#include "daxpy_microk_power8.c"
#endif
#ifndef HAVE_KERNEL_8
static void daxpy_kernel_8(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
{
BLASLONG register i = 0;
FLOAT a = *alpha;
while(i < n)
{
y[i] += a * x[i];
y[i+1] += a * x[i+1];
y[i+2] += a * x[i+2];
y[i+3] += a * x[i+3];
y[i+4] += a * x[i+4];
y[i+5] += a * x[i+5];
y[i+6] += a * x[i+6];
y[i+7] += a * x[i+7];
i+=8 ;
}
}
#endif
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;
BLASLONG ix=0,iy=0;
FLOAT a2[4];
a2[0]=da;
a2[1]=da;
a2[2]=da;
a2[3]=da;
if ( n <= 0 ) return(0);
if ( (inc_x == 1) && (inc_y == 1) )
{
BLASLONG n1 = n & -16;
if ( n1 )
daxpy_kernel_8(n1, x, y , a2 );
i = n1;
while(i < n)
{
y[i] += da * x[i] ;
i++ ;
}
return(0);
}
BLASLONG n1 = n & -4;
while(i < n1)
{
FLOAT m1 = da * x[ix] ;
FLOAT m2 = da * x[ix+inc_x] ;
FLOAT m3 = da * x[ix+2*inc_x] ;
FLOAT m4 = da * x[ix+3*inc_x] ;
y[iy] += m1 ;
y[iy+inc_y] += m2 ;
y[iy+2*inc_y] += m3 ;
y[iy+3*inc_y] += m4 ;
ix += inc_x*4 ;
iy += inc_y*4 ;
i+=4 ;
}
while(i < n)
{
y[iy] += da * x[ix] ;
ix += inc_x ;
iy += inc_y ;
i++ ;
}
return(0);
}

201
kernel/power/daxpy_microk_power8.c Normal file
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@ -0,0 +1,201 @@
/***************************************************************************
Copyright (c) 2013-2016, 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.
*****************************************************************************/
/**************************************************************************************
* 2016/03/22 Werner Saar (wernsaar@googlemail.com)
* BLASTEST : OK
* CTEST : OK
* TEST : OK
* LAPACK-TEST : OK
**************************************************************************************/
#define HAVE_KERNEL_8 1
static void daxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y , FLOAT *alpha) __attribute__ ((noinline));
static void daxpy_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *alpha)
{
BLASLONG i = n;
BLASLONG o16 = 16;
BLASLONG o32 = 32;
BLASLONG o48 = 48;
FLOAT *x1=x;
FLOAT *y1=y;
FLOAT *y2=y+1;
BLASLONG pre = 384;
__asm__ __volatile__
(
"lxsdx 33, %5, %4 \n\t"
"xxspltd 32, 33, 0 \n\t"
"addi %8, %8, -8 \n\t"
"dcbt %2, %9 \n\t"
"dcbt %3, %9 \n\t"
"lxvd2x 40, 0, %2 \n\t"
"lxvd2x 41, %5, %2 \n\t"
"lxvd2x 42, %6, %2 \n\t"
"lxvd2x 43, %7, %2 \n\t"
"lxvd2x 48, 0, %3 \n\t"
"lxvd2x 49, %5, %3 \n\t"
"lxvd2x 50, %6, %3 \n\t"
"lxvd2x 51, %7, %3 \n\t"
"addi %2, %2, 64 \n\t"
"addi %3, %3, 64 \n\t"
"lxvd2x 44, 0, %2 \n\t"
"lxvd2x 45, %5, %2 \n\t"
"lxvd2x 46, %6, %2 \n\t"
"lxvd2x 47, %7, %2 \n\t"
"lxvd2x 52, 0, %3 \n\t"
"lxvd2x 53, %5, %3 \n\t"
"lxvd2x 54, %6, %3 \n\t"
"lxvd2x 55, %7, %3 \n\t"
"addi %2, %2, 64 \n\t"
"addi %3, %3, 64 \n\t"
"addic. %0 , %0 , -16 \n\t"
"ble 2f \n\t"
".align 5 \n\t"
"1: \n\t"
"dcbt %2, %9 \n\t"
"dcbt %3, %9 \n\t"
"xvmaddadp 48, 40, 32 \n\t"
"xvmaddadp 49, 41, 32 \n\t"
"lxvd2x 40, 0, %2 \n\t"
"lxvd2x 41, %5, %2 \n\t"
"stxvd2x 48, 0, %8 \n\t"
"stxvd2x 49, %5, %8 \n\t"
"xvmaddadp 50, 42, 32 \n\t"
"xvmaddadp 51, 43, 32 \n\t"
"lxvd2x 42, %6, %2 \n\t"
"lxvd2x 43, %7, %2 \n\t"
"stxvd2x 50, %6, %8 \n\t"
"stxvd2x 51, %7, %8 \n\t"
"lxvd2x 48, 0, %3 \n\t"
"lxvd2x 49, %5, %3 \n\t"
"lxvd2x 50, %6, %3 \n\t"
"lxvd2x 51, %7, %3 \n\t"
"addi %2, %2, 64 \n\t"
"addi %8, %8, 64 \n\t"
"xvmaddadp 52, 44, 32 \n\t"
"addi %3, %3, 64 \n\t"
"xvmaddadp 53, 45, 32 \n\t"
"lxvd2x 44, 0, %2 \n\t"
"lxvd2x 45, %5, %2 \n\t"
"stxvd2x 52, 0, %8 \n\t"
"stxvd2x 53, %5, %8 \n\t"
"xvmaddadp 54, 46, 32 \n\t"
"xvmaddadp 55, 47, 32 \n\t"
"lxvd2x 46, %6, %2 \n\t"
"lxvd2x 47, %7, %2 \n\t"
"stxvd2x 54, %6, %8 \n\t"
"stxvd2x 55, %7, %8 \n\t"
"addi %2, %2, 64 \n\t"
"addi %8, %8, 64 \n\t"
"lxvd2x 52, 0, %3 \n\t"
"lxvd2x 53, %5, %3 \n\t"
"lxvd2x 54, %6, %3 \n\t"
"lxvd2x 55, %7, %3 \n\t"
"addi %3, %3, 64 \n\t"
"addic. %0 , %0 , -16 \n\t"
"bgt 1b \n\t"
"2: \n\t"
"xvmaddadp 48, 40, 32 \n\t"
"xvmaddadp 49, 41, 32 \n\t"
"xvmaddadp 50, 42, 32 \n\t"
"xvmaddadp 51, 43, 32 \n\t"
"xvmaddadp 52, 44, 32 \n\t"
"xvmaddadp 53, 45, 32 \n\t"
"xvmaddadp 54, 46, 32 \n\t"
"xvmaddadp 55, 47, 32 \n\t"
"stxvd2x 48, 0, %8 \n\t"
"stxvd2x 49, %5, %8 \n\t"
"stxvd2x 50, %6, %8 \n\t"
"stxvd2x 51, %7, %8 \n\t"
"addi %8, %8, 64 \n\t"
"stxvd2x 52, 0, %8 \n\t"
"stxvd2x 53, %5, %8 \n\t"
"stxvd2x 54, %6, %8 \n\t"
"stxvd2x 55, %7, %8 \n\t"
"addi %8, %8, 64 \n\t"
:
:
"r" (i), // 0
"r" (n), // 1
"r" (x1), // 2
"r" (y1), // 3
"r" (alpha), // 4
"r" (o16), // 5
"r" (o32), // 6
"r" (o48), // 7
"r" (y2), // 8
"r" (pre) // 9
: "cr0", "%0", "%2" , "%3", "%8", "memory"
);
}