From: "Rémi Denis-Courmont" <remi@remlab.net>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH 2/2] lavc/aacpsdsp: unroll RISC-V V add_squares
Date: Sat, 15 Jul 2023 23:57:05 +0300
Message-ID: <20230715205705.34475-2-remi@remlab.net> (raw)
This does not make much difference with the Device Under Test, but since
we can:
Before:
ps_add_squares_rvv_f32: 11973.7
After:
ps_add_squares_rvv_f32: 11958.2
---
libavcodec/riscv/aacpsdsp_rvv.S | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/libavcodec/riscv/aacpsdsp_rvv.S b/libavcodec/riscv/aacpsdsp_rvv.S
index b7ea314fc3..bd8f905334 100644
--- a/libavcodec/riscv/aacpsdsp_rvv.S
+++ b/libavcodec/riscv/aacpsdsp_rvv.S
@@ -23,15 +23,15 @@
func ff_ps_add_squares_rvv, zve32f
li t1, 32
1:
- vsetvli t0, a2, e32, m1, ta, ma
+ vsetvli t0, a2, e32, m4, ta, ma
vle64.v v8, (a1)
vnsrl.wx v24, v8, zero
vle32.v v16, (a0)
sub a2, a2, t0
- vnsrl.wx v25, v8, t1
+ vnsrl.wx v28, v8, t1
vfmacc.vv v16, v24, v24
sh3add a1, t0, a1
- vfmacc.vv v16, v25, v25
+ vfmacc.vv v16, v28, v28
vse32.v v16, (a0)
sh2add a0, t0, a0
bnez a2, 1b
--
2.40.1
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