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POWER10: Improve copy performance 

This patch aligns the stores to 32 byte boundary for scopy and dcopy
before entering into vector pair loop. For ccopy, changed the store
instructions to stxv to improve performance of unaligned cases.
This commit is contained in:
Rajalakshmi Srinivasaraghavan 2020-12-13 10:41:45 -06:00
parent 87315e8a8d
commit 2fb11f873b
5 changed files with 152 additions and 23 deletions
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115
kernel/power/ccopy_microk_power10.c Normal file
View File

@ -0,0 +1,115 @@
/***************************************************************************
Copyright (c) 2020, 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.
*****************************************************************************/
#define HAVE_KERNEL 1
static void copy_kernel (BLASLONG n, FLOAT *x, FLOAT *y)
{
__asm__
(
"lxvp 32, 0(%2) \n\t"
"lxvp 34, 32(%2) \n\t"
"lxvp 36, 64(%2) \n\t"
"lxvp 38, 96(%2) \n\t"
"lxvp 40, 128(%2) \n\t"
"lxvp 42, 160(%2) \n\t"
"lxvp 44, 192(%2) \n\t"
"lxvp 46, 224(%2) \n\t"
"addi %2, %2, 256 \n\t"
"addic. %1, %1, -32 \n\t"
"ble two%= \n\t"
".align 5 \n"
"one%=: \n\t"
"stxv 33, 0(%3) \n\t"
"stxv 32, 16(%3) \n\t"
"stxv 35, 32(%3) \n\t"
"stxv 34, 48(%3) \n\t"
"stxv 37, 64(%3) \n\t"
"stxv 36, 80(%3) \n\t"
"stxv 39, 96(%3) \n\t"
"stxv 38, 112(%3) \n\t"
"lxvp 32, 0(%2) \n\t"
"lxvp 34, 32(%2) \n\t"
"lxvp 36, 64(%2) \n\t"
"lxvp 38, 96(%2) \n\t"
"stxv 41, 128(%3) \n\t"
"stxv 40, 144(%3) \n\t"
"stxv 43, 160(%3) \n\t"
"stxv 42, 176(%3) \n\t"
"stxv 45, 192(%3) \n\t"
"stxv 44, 208(%3) \n\t"
"stxv 47, 224(%3) \n\t"
"stxv 46, 240(%3) \n\t"
"lxvp 40, 128(%2) \n\t"
"lxvp 42, 160(%2) \n\t"
"lxvp 44, 192(%2) \n\t"
"lxvp 46, 224(%2) \n\t"
"addi %3, %3, 256 \n\t"
"addi %2, %2, 256 \n\t"
"addic. %1, %1, -32 \n\t"
"bgt one%= \n"
"two%=: \n\t"
"stxv 33, 0(%3) \n\t"
"stxv 32, 16(%3) \n\t"
"stxv 35, 32(%3) \n\t"
"stxv 34, 48(%3) \n\t"
"stxv 37, 64(%3) \n\t"
"stxv 36, 80(%3) \n\t"
"stxv 39, 96(%3) \n\t"
"stxv 38, 112(%3) \n\t"
"stxv 41, 128(%3) \n\t"
"stxv 40, 144(%3) \n\t"
"stxv 43, 160(%3) \n\t"
"stxv 42, 176(%3) \n\t"
"stxv 45, 192(%3) \n\t"
"stxv 44, 208(%3) \n\t"
"stxv 47, 224(%3) \n\t"
"stxv 46, 240(%3) \n\t"
"#n=%1 x=%4=%2 y=%0=%3"
:
"=m" (*y),
"+r" (n), // 1
"+b" (x), // 2
"+b" (y) // 3
:
"m" (*x)
:
"cr0",
"vs32","vs33","vs34","vs35","vs36","vs37","vs38","vs39",
"vs40","vs41","vs42","vs43","vs44","vs45","vs46","vs47"
);
}

4
kernel/power/ccopy_power10.c
View File

@ -28,7 +28,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "common.h"
#if defined(__VEC__) || defined(__ALTIVEC__)
#include "copy_microk_power10.c"
#include "ccopy_microk_power10.c"
#endif
#ifndef HAVE_KERNEL
@ -86,7 +86,7 @@ int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
if ( (inc_x == 1) && (inc_y == 1 ))
{
BLASLONG n1 = n & -64;
BLASLONG n1 = n & -32;
if ( n1 > 0 )
{
copy_kernel(n1, x, y);

25
kernel/power/copy_microk_power10.c
View File

@ -62,38 +62,39 @@ static void copy_kernel (BLASLONG n, FLOAT *x, FLOAT *y)
"one%=: \n\t"
"stxvp 32, 0(%3) \n\t"
"lxvp 32, 0(%2) \n\t"
"stxvp 34, 32(%3) \n\t"
"lxvp 34, 32(%2) \n\t"
"stxvp 36, 64(%3) \n\t"
"lxvp 36, 64(%2) \n\t"
"stxvp 38, 96(%3) \n\t"
"lxvp 32, 0(%2) \n\t"
"lxvp 34, 32(%2) \n\t"
"lxvp 36, 64(%2) \n\t"
"lxvp 38, 96(%2) \n\t"
"stxvp 40, 128(%3) \n\t"
"lxvp 40, 128(%2) \n\t"
"stxvp 42, 160(%3) \n\t"
"lxvp 42, 160(%2) \n\t"
"stxvp 44, 192(%3) \n\t"
"lxvp 44, 192(%2) \n\t"
"stxvp 46, 224(%3) \n\t"
"lxvp 40, 128(%2) \n\t"
"lxvp 42, 160(%2) \n\t"
"lxvp 44, 192(%2) \n\t"
"lxvp 46, 224(%2) \n\t"
"stxvp 48, 256(%3) \n\t"
"lxvp 48, 256(%2) \n\t"
"stxvp 50, 288(%3) \n\t"
"lxvp 50, 288(%2) \n\t"
"stxvp 52, 320(%3) \n\t"
"lxvp 52, 320(%2) \n\t"
"stxvp 54, 352(%3) \n\t"
"lxvp 48, 256(%2) \n\t"
"lxvp 50, 288(%2) \n\t"
"lxvp 52, 320(%2) \n\t"
"lxvp 54, 352(%2) \n\t"
"stxvp 56, 384(%3) \n\t"
"lxvp 56, 384(%2) \n\t"
"stxvp 58, 416(%3) \n\t"
"lxvp 58, 416(%2) \n\t"
"stxvp 60, 448(%3) \n\t"
"lxvp 60, 448(%2) \n\t"
"stxvp 62, 480(%3) \n\t"
"lxvp 56, 384(%2) \n\t"
"lxvp 58, 416(%2) \n\t"
"lxvp 60, 448(%2) \n\t"
"lxvp 62, 480(%2) \n\t"
"addi %3, %3, 512 \n\t"

16
kernel/power/dcopy_power10.c
View File

@ -85,12 +85,18 @@ int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
if ( (inc_x == 1) && (inc_y == 1 ))
{
BLASLONG n1 = n & -64;
if ( n1 > 0 )
if ( n >= 64 )
{
copy_kernel(n1, x, y);
i=n1;
BLASLONG align = ((32 - ((uintptr_t)y & (uintptr_t)0x1F)) >> 3) & 0x3;
for (i = 0; i < align; i++) {
y[i] = x[i] ;
}
}
BLASLONG n1 = (n-i) & -64;
if ( n1 )
{
copy_kernel(n1, &x[i], &y[i]);
i += n1;
}
while(i < n)

15
kernel/power/scopy_power10.c
View File

@ -86,11 +86,18 @@ int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
if ( (inc_x == 1) && (inc_y == 1 ))
{
BLASLONG n1 = n & -128;
if ( n1 > 0 )
if ( n >= 128 )
{
copy_kernel (n1, x, y);
i=n1;
BLASLONG align = ((32 - ((uintptr_t)y & (uintptr_t)0x1F)) >> 2) & 0x7;
for (i = 0; i < align; i++) {
y[i] = x[i] ;
}
}
BLASLONG n1 = (n-i) & -128;
if ( n1 )
{
copy_kernel(n1, &x[i], &y[i]);
i += n1;
}
while(i < n)