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/*
* Copyright © 2023 Rémi Denis-Courmont.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/riscv/asm.S"
func ff_scalarproduct_and_madd_int16_rvv, zve32x
vsetvli t0, zero, e32, m8, ta, ma
vmv.v.x v0, zero
1:
vsetvli t0, a3, e16, m4, tu, ma
vle16.v v8, (a0)
sub a3, a3, t0
vle16.v v16, (a1)
sh1add a1, t0, a1
vwmacc.vv v0, v8, v16
vle16.v v24, (a2)
sh1add a2, t0, a2
vmacc.vx v8, a4, v24
vse16.v v8, (a0)
sh1add a0, t0, a0
bnez a3, 1b
vsetvli t0, zero, e32, m8, ta, ma
vmv.s.x v8, zero
vredsum.vs v0, v0, v8
vmv.x.s a0, v0
ret
endfunc
func ff_scalarproduct_and_madd_int32_rvv, zve32x
vsetvli t0, zero, e32, m8, ta, ma
vmv.v.x v0, zero
1:
vsetvli t0, a3, e32, m8, tu, ma
vle16.v v8, (a0)
sub a3, a3, t0
vsext.vf2 v24, v8
vle32.v v16, (a1)
sh2add a1, t0, a1
vmacc.vv v0, v16, v24
vsetvli zero, zero, e16, m4, ta, ma
vle16.v v24, (a2)
sh1add a2, t0, a2
vmacc.vx v8, a4, v24
vse16.v v8, (a0)
sh1add a0, t0, a0
bnez a3, 1b
vsetvli t0, zero, e32, m8, ta, ma
vmv.s.x v8, zero
vredsum.vs v0, v0, v8
vmv.x.s a0, v0
ret
endfunc
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