har0ke/FFmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

lavu/fixed_dsp: unroll RISC-V V loop

Browse Source 
Before:
butterflies_fixed_c: 804.7
butterflies_fixed_rvv_i32: 348.2

After:
butterflies_fixed_rvv_i32: 308.7
This commit is contained in:
Rémi Denis-Courmont 2023-07-14 22:53:35 +03:00
parent d8ea5f50e2
commit 3d79afbe70
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavutil/riscv/fixed_dsp_rvv.S
View File

@ -23,7 +23,7 @@
// (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1] // (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1]
func ff_butterflies_fixed_rvv, zve32x func ff_butterflies_fixed_rvv, zve32x
1: 1:
vsetvli t0, a2, e32, m1, ta, ma vsetvli t0, a2, e32, m4, ta, ma
vle32.v v16, (a0) vle32.v v16, (a0)
sub a2, a2, t0 sub a2, a2, t0
vle32.v v24, (a1) vle32.v v24, (a1)