56 lines
1.8 KiB
ArmAsm
56 lines
1.8 KiB
ArmAsm
/*
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* Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS).
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/riscv/asm.S"
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// void ff_fcmul_add(float *sum, const float *t, const float *c, int len)
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func ff_fcmul_add_rvv, zve64f
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li t1, 32
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1:
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vsetvli t0, a3, e32, m4, ta, ma
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vle64.v v24, (a0)
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sub a3, a3, t0
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vnsrl.wx v16, v24, zero
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vnsrl.wx v20, v24, t1
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vle64.v v24, (a1)
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sh3add a1, t0, a1
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vnsrl.wx v0, v24, zero
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vnsrl.wx v4, v24, t1
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vle64.v v24, (a2)
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sh3add a2, t0, a2
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vnsrl.wx v8, v24, zero
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vnsrl.wx v12, v24, t1
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vfmacc.vv v16, v0, v8
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vfmacc.vv v20, v4, v8
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vfnmsac.vv v16, v4, v12
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vfmacc.vv v20, v0, v12
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vsseg2e32.v v16, (a0)
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sh3add a0, t0, a0
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bgtz a3, 1b
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flw fa0, 0(a1)
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flw fa1, 0(a2)
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flw fa2, 0(a0)
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fmadd.s fa2, fa0, fa1, fa2
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fsw fa2, 0(a0)
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ret
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endfunc
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