Le lauantaina 15. heinäkuuta 2023, 23.57.04 EEST Rémi Denis-Courmont a écrit : > Segmented loads are kinda slow, so this advantageously uses a > unit-strided load and narrowing shifts instead. > > Before: > ps_add_squares_rvv_f32: 30352.2 > > After: > ps_add_squares_rvv_f32: 11973.7 > --- > libavcodec/riscv/aacpsdsp_rvv.S | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > diff --git a/libavcodec/riscv/aacpsdsp_rvv.S > b/libavcodec/riscv/aacpsdsp_rvv.S index 80bd19f6ad..b7ea314fc3 100644 > --- a/libavcodec/riscv/aacpsdsp_rvv.S > +++ b/libavcodec/riscv/aacpsdsp_rvv.S > @@ -1,5 +1,5 @@ > /* > - * Copyright © 2022 Rémi Denis-Courmont. > + * Copyright © 2022-2023 Rémi Denis-Courmont. > * > * This file is part of FFmpeg. > * > @@ -21,13 +21,16 @@ > #include "libavutil/riscv/asm.S" > > func ff_ps_add_squares_rvv, zve32f > + li t1, 32 > 1: > vsetvli t0, a2, e32, m1, ta, ma > - vlseg2e32.v v24, (a1) > - sub a2, a2, t0 > + vle64.v v8, (a1)
Requires zve64x > + vnsrl.wx v24, v8, zero > vle32.v v16, (a0) > - sh3add a1, t0, a1 > + sub a2, a2, t0 > + vnsrl.wx v25, v8, t1 > vfmacc.vv v16, v24, v24 > + sh3add a1, t0, a1 > vfmacc.vv v16, v25, v25 > vse32.v v16, (a0) > sh2add a0, t0, a0 -- レミ・デニ-クールモン http://www.remlab.net/ _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
