OpenBLAS/kernel/loongarch64/izamax.S

218 lines
5.3 KiB
ArmAsm

/***************************************************************************
Copyright (c) 2021, 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 ASSEMBLER
#include "common.h"
#define N $r4
#define X $r5
#define INCX $r6
#define I $r18
#define TEMP $r7
#define a1 $f10
#define a2 $f11
#define a3 $f12
#define a4 $f13
#define a5 $f14
#define a6 $f15
#define a7 $f16
#define a8 $f17
#define t1 $f0
#define t2 $f1
#define t3 $f2
#define t4 $f3
#define t5 $f4
#define t6 $f5
#define t7 $f6
#define t8 $f7
#define s1 $f22
#define s2 $f8
#define s3 $f23
#define s4 $f9
#define x1 $r17
#define x2 $r8
#define x3 $r9
#define x4 $r10
PROLOGUE
#ifdef F_INTERFACE
LDINT N, 0(N)
LDINT INCX, 0(INCX)
#endif
li.d x1, 0
bge $r0, N, .L999
slli.d INCX, INCX, ZBASE_SHIFT
bge $r0, INCX, .L999
LD a1, X, 0 * SIZE
LD a2, X, 1 * SIZE
FABS t1, a1
FABS t2, a2
ADD s1, t1, t2
ADD s2, t1, t2
ADD s3, t1, t2
ADD s4, t1, t2
addi.d N, N, -1
li.d x1, 1
bge $r0, N, .L999
add.d X, X, INCX
li.d x2, 1
srai.d I, N, 2
li.d x3, 1
li.d TEMP, 2
li.d x4, 1
bge $r0, I, .L15
LD a1, X, 0 * SIZE
LD a2, X, 1 * SIZE
add.d X, X, INCX
LD a3, X, 0 * SIZE
LD a4, X, 1 * SIZE
add.d X, X, INCX
LD a5, X, 0 * SIZE
LD a6, X, 1 * SIZE
add.d X, X, INCX
LD a7, X, 0 * SIZE
LD a8, X, 1 * SIZE
addi.d I, I, -1
add.d X, X, INCX
bge $r0, I, .L13
.align 3
.L12:
FABS t1, a1
LD a1, X, 0 * SIZE
FABS t2, a2
LD a2, X, 1 * SIZE
FABS t3, a3
add.d X, X, INCX
FABS t4, a4
FABS t5, a5
LD a3, X, 0 * SIZE
FABS t6, a6
LD a4, X, 1 * SIZE
FABS t7, a7
add.d X, X, INCX
FABS t8, a8
ADD t1, t1, t2
LD a5, X, 0 * SIZE
ADD t3, t3, t4
LD a6, X, 1 * SIZE
ADD t5, t5, t6
add.d X, X, INCX
ADD t7, t7, t8
CMPLT $fcc0, s1, t1
LD a7, X, 0 * SIZE
CMPLT $fcc1, s2, t3
LD a8, X, 1 * SIZE
CMPLT $fcc2, s3, t5
add.d X, X, INCX
CMPLT $fcc3, s4, t7
addi.d I, I, -1
CMOVT s1, s1, t1, $fcc0
MOVT(x1, TEMP, $fcc0)
CMOVT s2, s2, t3, $fcc1
MOVT(x2, TEMP, $fcc1)
CMOVT s3, s3, t5, $fcc2
MOVT(x3, TEMP, $fcc2)
CMOVT s4, s4, t7, $fcc3
MOVT(x4, TEMP, $fcc3)
addi.d TEMP, TEMP, 4
blt $r0, I, .L12
.align 3
.L13:
FABS t1, a1
FABS t2, a2
FABS t3, a3
FABS t4, a4
FABS t5, a5
FABS t6, a6
FABS t7, a7
FABS t8, a8
ADD t1, t1, t2
ADD t3, t3, t4
ADD t5, t5, t6
ADD t7, t7, t8
CMPLT $fcc0, s1, t1
CMPLT $fcc1, s2, t3
CMPLT $fcc2, s3, t5
CMPLT $fcc3, s4, t7
CMOVT s1, s1, t1, $fcc0
MOVT(x1, TEMP, $fcc0)
CMOVT s2, s2, t3, $fcc1
MOVT(x2, TEMP, $fcc1)
CMOVT s3, s3, t5, $fcc2
MOVT(x3, TEMP, $fcc2)
CMOVT s4, s4, t7, $fcc3
MOVT(x4, TEMP, $fcc3)
addi.d TEMP, TEMP, 4
addi.d x2, x2, 1
addi.d x3, x3, 2
addi.d x4, x4, 3
.align 3
.L15:
andi I, N, 3
bge $r0, I, .L998
.align 3
.L16:
LD a1, X, 0 * SIZE
LD a2, X, 1 * SIZE
add.d X, X, INCX
FABS t1, a1
FABS t2, a2
ADD t1, t1, t2
addi.d I, I, -1
CMPLT $fcc0, s1, t1
CMOVT s1, s1, t1, $fcc0
MOVT(x1, TEMP, $fcc0)
addi.d TEMP, TEMP, 1
blt $r0, I, .L16
.align 3
.L998:
CMPLT $fcc0, s1, s2
CMPLT $fcc1, s3, s4
CMOVT s1, s1, s2, $fcc0
MOVT(x1, x2, $fcc0)
CMOVT s3, s3, s4, $fcc1
MOVT(x3, x4, $fcc1)
CMPLT $fcc0, s1, s3
CMOVT s1, s1, s3, $fcc0
MOVT(x1, x3, $fcc0)
.align 3
.L999:
move $r4, $r17
fmov.d $f0, $f22
jirl $r0, $r1, 0x0
EPILOGUE