240 lines
5.4 KiB
ArmAsm
240 lines
5.4 KiB
ArmAsm
/***************************************************************************
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Copyright (c) 2023, 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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#define ASSEMBLER
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#include "common.h"
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#define N $r4
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#define X $r5
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#define INCX $r6
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#define I $r12
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#define t1 $f14
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#define t2 $f18
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#define t3 $f15
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#define t4 $f17
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#define s1 $f22
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#define s2 $f9
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#define s3 $f10
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#define s4 $f11
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#define TEMP $r16
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#define a0 $f20
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#define a1 $f21
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#define x1 $vr9
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#define x2 $vr10
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#define x3 $vr11
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#define x4 $vr12
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#define VT0 $vr13
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#define VT1 $vr14
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#define res0 $vr18
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#define neg1 $vr19
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#define VX0 $vr20
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#define VX1 $vr21
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#define VM0 $vr22
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#define VM1 $vr23
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PROLOGUE
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vxor.v VM0, VM0, VM0
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vxor.v res0, res0, res0
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bge $r0, N, .L999
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bge $r0, INCX, .L999
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li.d TEMP, 1
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slli.d TEMP, TEMP, ZBASE_SHIFT
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slli.d INCX, INCX, ZBASE_SHIFT
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srai.d I, N, 3
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bne INCX, TEMP, .L20
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bge $r0, I, .L23
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.align 3
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.L10:
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vld VX0, X, 0
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vld VX1, X, 16
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#ifdef DOUBLE
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vpickev.d x1, VX1, VX0
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vpickod.d x2, VX1, VX0
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#else
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vpickev.w x1, VX1, VX0
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vpickod.w x2, VX1, VX0
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#endif
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VFSUB x3, res0, x1
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VFSUB x4, res0, x2
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VFMAX x1, x1, x3
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VFMAX x2, x2, x4
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VFADD VM1, x1, x2
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vld VX0, X, 32
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vld VX1, X, 48
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#ifdef DOUBLE
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vpickev.d x1, VX1, VX0
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vpickod.d x2, VX1, VX0
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#else
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vpickev.w x1, VX1, VX0
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vpickod.w x2, VX1, VX0
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#endif
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VFSUB x3, res0, x1
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VFSUB x4, res0, x2
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VFMAX x1, x1, x3
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VFMAX x2, x2, x4
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VFADD x1, x1, x2
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VFMAX VM1, x1, VM1
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VFMAX VM0, VM0, VM1
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#ifdef DOUBLE
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vld VX0, X, 64
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vld VX1, X, 80
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vpickev.d x1, VX1, VX0
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vpickod.d x2, VX1, VX0
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VFSUB x3, res0, x1
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VFSUB x4, res0, x2
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VFMAX x1, x1, x3
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VFMAX x2, x2, x4
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VFADD VM1, x1, x2
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vld VX0, X, 96
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vld VX1, X, 112
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vpickev.d x1, VX1, VX0
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vpickod.d x2, VX1, VX0
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VFSUB x3, res0, x1
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VFSUB x4, res0, x2
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VFMAX x1, x1, x3
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VFMAX x2, x2, x4
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VFADD x1, x1, x2
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VFMAX VM1, x1, VM1
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VFMAX VM0, VM0, VM1
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#endif
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addi.d X, X, 16 * SIZE
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addi.d I, I, -1
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blt $r0, I, .L10
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.align 3
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.L11:
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#ifdef DOUBLE
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vreplvei.d x1, VM0, 0
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vreplvei.d x2, VM0, 1
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VFMAX VM0, x1, x2
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#else
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vreplvei.w x1, VM0, 0
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vreplvei.w x2, VM0, 1
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vreplvei.w x3, VM0, 2
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vreplvei.w x4, VM0, 3
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VFMAX VM1, x1, x2
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VFMAX VM0, x3, x4
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VFMAX VM0, VM0, VM1
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#endif
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b .L23
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.align 3
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.L20: // INCX!=1
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bge $r0, I, .L23
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.align 3
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.L21:
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LD t1, X, 0 * SIZE
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LD t2, X, 1 * SIZE
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add.d X, X, INCX
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LD t3, X, 0 * SIZE
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LD t4, X, 1 * SIZE
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add.d X, X, INCX
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FABS t1, t1
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FABS t2, t2
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FABS t3, t3
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FABS t4, t4
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ADD t1, t1, t2
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ADD t3, t3, t4
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FMAX s1, t1, t3
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LD t1, X, 0 * SIZE
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LD t2, X, 1 * SIZE
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add.d X, X, INCX
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LD t3, X, 0 * SIZE
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LD t4, X, 1 * SIZE
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add.d X, X, INCX
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FABS t1, t1
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FABS t2, t2
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FABS t3, t3
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FABS t4, t4
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ADD t1, t1, t2
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ADD t3, t3, t4
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FMAX s1, t1, t3
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LD t1, X, 0 * SIZE
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LD t2, X, 1 * SIZE
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add.d X, X, INCX
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LD t3, X, 0 * SIZE
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LD t4, X, 1 * SIZE
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add.d X, X, INCX
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FABS t1, t1
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FABS t2, t2
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FABS t3, t3
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FABS t4, t4
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addi.d I, I, -1
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ADD t1, t1, t2
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ADD t3, t3, t4
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FMAX s3, t1, t3
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LD t1, X, 0 * SIZE
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LD t2, X, 1 * SIZE
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add.d X, X, INCX
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LD t3, X, 0 * SIZE
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LD t4, X, 1 * SIZE
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add.d X, X, INCX
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FABS t1, t1
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FABS t2, t2
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FABS t3, t3
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FABS t4, t4
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ADD t1, t1, t2
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ADD t3, t3, t4
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FMAX s4, t1, t3
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blt $r0, I, .L21
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.align 3
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.L22:
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FMAX s1, s1, s2
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FMAX s3, s3, s4
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FMAX s1, s1, s3
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.align 3
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.L23: //N<8
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andi I, N, 7
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bge $r0, I, .L999
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.align 3
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.L24:
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LD a0, X, 0 * SIZE
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LD a1, X, 1 * SIZE
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addi.d I, I, -1
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FABS a0, a0
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FABS a1, a1
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ADD a0, a0, a1
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add.d X, X, INCX
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FMAX s1, a0, s1
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blt $r0, I, .L24
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.align 3
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.L999:
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MOV $f0, $f22
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jirl $r0, $r1, 0x0
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.align 3
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EPILOGUE
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