This removes one stray LI and reworks the vector arithmetic to avoid
changing the vector configuration. On K230, this takes the 46.5 cycle
count down from 46.5 to 43.5.
---
libavcodec/riscv/rv34dsp_rvv.S | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/libavcodec/riscv/rv34dsp_rvv.S b/libavcodec/riscv/rv34dsp_rvv.S
index f1f6345012..e8aff7e570 100644
--- a/libavcodec/riscv/rv34dsp_rvv.S
+++ b/libavcodec/riscv/rv34dsp_rvv.S
@@ -36,16 +36,15 @@ func ff_rv34_idct_dc_add_rvv, zve32x
vsetivli zero, 4, e8, mf4, ta, ma
vlse32.v v0, (a0), a1
li t1, 169
+ li t2, 128
mul t1, t1, a2
- li a2, 255
+ vsetivli zero, 4*4, e8, m1, ta, ma
+ vwsubu.vx v2, v0, t2
addi t1, t1, 512
srai t1, t1, 10
- vsetivli zero, 4*4, e16, m2, ta, ma
- vzext.vf2 v2, v0
- vadd.vx v2, v2, t1
- vmax.vx v2, v2, zero
- vsetvli zero, zero, e8, m1, ta, ma
- vnclipu.wi v0, v2, 0
+ vwadd.wx v2, v2, t1
+ vnclip.wi v0, v2, 0
+ vxor.vx v0, v0, t2
vsetivli zero, 4, e8, mf4, ta, ma
vsse32.v v0, (a0), a1
--
2.45.1
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