From: "Rémi Denis-Courmont" <remi@remlab.net>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH] lavc/vorbisdsp: unroll RISC-V V inverse_coupling
Date: Thu, 13 Jul 2023 23:19:57 +0300
Message-ID: <20230713201957.10725-1-remi@remlab.net> (raw)
This increases the group multiplier as per T-Head C910 benchmarks:
inverse_coupling_c: 4597.0
inverse_coupling_rvv_i32: 1312.7 (m1)
inverse_coupling_rvv_i32: 1116.7 (m2)
inverse_coupling_rvv_i32: 732.2 (m4)
inverse_coupling_rvv_i32: 898.0 (m8)
---
libavcodec/riscv/vorbisdsp_rvv.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/riscv/vorbisdsp_rvv.S b/libavcodec/riscv/vorbisdsp_rvv.S
index f45e7dc2f1..81a6c62a65 100644
--- a/libavcodec/riscv/vorbisdsp_rvv.S
+++ b/libavcodec/riscv/vorbisdsp_rvv.S
@@ -23,7 +23,7 @@
func ff_vorbis_inverse_coupling_rvv, zve32f
fmv.w.x ft0, zero
1:
- vsetvli t0, a2, e32, m1, ta, ma
+ vsetvli t0, a2, e32, m4, ta, ma
vle32.v v16, (a1)
sub a2, a2, t0
vle32.v v24, (a0)
--
2.40.1
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