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02594c8c01
As in the aligned case, we can use VLSE64.V, though the way of doing so gets more convoluted, so the performance gains are more modest: get_pixels_unaligned_c: 126.7 get_pixels_unaligned_rvv_i32: 145.5 (before) get_pixels_unaligned_rvv_i64: 62.2 (after) For the reference, those are the aligned benchmarks (unchanged) on the same T-Head C908 hardware: get_pixels_c: 126.7 get_pixels_rvi: 85.7 get_pixels_rvv_i64: 33.2
80 lines
2.3 KiB
ArmAsm
80 lines
2.3 KiB
ArmAsm
/*
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* Copyright © 2022 Rémi Denis-Courmont.
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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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func ff_get_pixels_8_rvv, zve64x
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vsetivli zero, 8, e8, mf2, ta, ma
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li t0, 8 * 8
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1:
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vlse64.v v16, (a1), a2
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vsetvli zero, t0, e8, m4, ta, ma
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vwcvtu.x.x.v v8, v16
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vse16.v v8, (a0)
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ret
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endfunc
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func ff_get_pixels_unaligned_8_rvv, zve64x
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andi t1, a1, 7
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vsetivli zero, 8, e64, m4, ta, ma
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li t0, 8 * 8
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beqz t1, 1b
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andi a1, a1, -8
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slli t2, t1, 3
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addi t1, a1, 8
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sub t3, t0, t2
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vlse64.v v16, (a1), a2
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vlse64.v v24, (t1), a2
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vsrl.vx v16, v16, t2
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vsll.vx v24, v24, t3
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vor.vv v16, v16, v24
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vsetvli zero, t0, e8, m4, ta, ma
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vwcvtu.x.x.v v8, v16
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vse16.v v8, (a0)
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ret
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endfunc
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func ff_diff_pixels_rvv, zve64x
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vsetivli zero, 8, e8, mf2, ta, ma
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li t0, 8 * 8
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vlse64.v v16, (a1), a3
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vlse64.v v24, (a2), a3
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vsetvli zero, t0, e8, m4, ta, ma
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vwsubu.vv v8, v16, v24
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vse16.v v8, (a0)
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ret
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endfunc
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func ff_diff_pixels_unaligned_rvv, zve32x
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vsetivli zero, 8, e8, mf2, ta, ma
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vlsseg8e8.v v16, (a1), a3
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vlsseg8e8.v v24, (a2), a3
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vwsubu.vv v8, v16, v24
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vwsubu.vv v9, v17, v25
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vwsubu.vv v10, v18, v26
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vwsubu.vv v11, v19, v27
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vwsubu.vv v12, v20, v28
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vwsubu.vv v13, v21, v29
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vwsubu.vv v14, v22, v30
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vwsubu.vv v15, v23, v31
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vsseg8e16.v v8, (a0)
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ret
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endfunc
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