T-Head C908 (ns):
h264_biweight2_8_c: 2414.5
h264_biweight2_8_rvv_i32: 701.8 (before)
h264_biweight2_8_rvv_i32: 562.8 (after)
h264_biweight4_8_c: 4655.3
h264_biweight4_8_rvv_i32: 1377.5 (before)
h264_biweight4_8_rvv_i32: 1109.0 (after)
h264_biweight8_8_c: 9701.5
h264_biweight8_8_rvv_i32: 2896.0 (before)
h264_biweight8_8_rvv_i32: 2340.5 (after)
h264_biweight16_8_c: 18025.0
h264_biweight16_8_rvv_i32: 3460.8 (before)
h264_biweight16_8_rvv_i32: 3146.0 (after)
SpacemiT X60 (ns):
h264_biweight2_8_c: 2415.5
h264_biweight2_8_rvv_i32: 478.2 (before)
h264_biweight2_8_rvv_i32: 405.0 (after)
h264_biweight4_8_c: 4655.3
h264_biweight4_8_rvv_i32: 946.7 (before)
h264_biweight4_8_rvv_i32: 811.5 (after)
h264_biweight8_8_c: 9061.8
h264_biweight8_8_rvv_i32: 2071.7 (before)
h264_biweight8_8_rvv_i32: 1811.3 (after)
h264_biweight16_8_c: 18020.5
h264_biweight16_8_rvv_i32: 3457.2 (before)
h264_biweight16_8_rvv_i32: 2499.0 (after)
---
libavcodec/riscv/h264dsp_rvv.S | 32 +++++++++++++++-----------------
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/libavcodec/riscv/h264dsp_rvv.S b/libavcodec/riscv/h264dsp_rvv.S
index a38bf7ef1d..46392c92a5 100644
--- a/libavcodec/riscv/h264dsp_rvv.S
+++ b/libavcodec/riscv/h264dsp_rvv.S
@@ -56,22 +56,21 @@ func ff_h264_biweight_pixels_simple_8_rvv, zve32x
addi a7, a7, 1
ori a7, a7, 1
sll a7, a7, a4
+ addi a4, a4, 1
1:
- vsetvli zero, t6, e32, m4, ta, ma
+ vsetvli zero, t6, e16, m2, ta, ma
vle8.v v8, (a0)
addi a3, a3, -1
vle8.v v12, (a1)
add a1, a1, a2
vmv.v.x v16, a7
- vsetvli zero, zero, e16, m2, ta, ma
vzext.vf2 v24, v8
vzext.vf2 v28, v12
- vwmaccsu.vx v16, a5, v24
- vwmaccsu.vx v16, a6, v28
- vnclip.wx v16, v16, a4
+ vmacc.vx v16, a5, v24
+ vmacc.vx v16, a6, v28
vmax.vx v16, v16, zero
vsetvli zero, zero, e8, m1, ta, ma
- vnclipu.wi v8, v16, 1
+ vnclipu.wx v8, v16, a4
vse8.v v8, (a0)
add a0, a0, a2
bnez a3, 1b
@@ -121,12 +120,13 @@ func ff_h264_biweight_pixels_8_rvv, zve32x
addi a7, a7, 1
ori a7, a7, 1
sll a7, a7, a4
+ addi a4, a4, 1
1:
mv t0, a0
mv t1, a1
mv t5, t6
2:
- vsetvli t2, a3, e32, m8, ta, ma
+ vsetvli t2, a3, e16, m4, ta, ma
vlsseg2e8.v v0, (t0), a2
vlsseg2e8.v v4, (t1), a2
addi t5, t5, -2
@@ -135,19 +135,17 @@ func ff_h264_biweight_pixels_8_rvv, zve32x
vsetvli zero, zero, e16, m4, ta, ma
vzext.vf2 v8, v0
vzext.vf2 v12, v2
- vwmaccsu.vx v16, a5, v8
- vwmaccsu.vx v24, a5, v12
+ vmacc.vx v16, a5, v8
+ vmacc.vx v24, a5, v12
vzext.vf2 v8, v4
vzext.vf2 v12, v6
- vwmaccsu.vx v16, a6, v8
- vwmaccsu.vx v24, a6, v12
- vnclip.wx v8, v16, a4
- vnclip.wx v12, v24, a4
- vmax.vx v8, v8, zero
- vmax.vx v12, v12, zero
+ vmacc.vx v16, a6, v8
+ vmacc.vx v24, a6, v12
+ vmax.vx v8, v16, zero
+ vmax.vx v12, v24, zero
vsetvli zero, zero, e8, m2, ta, ma
- vnclipu.wi v0, v8, 1
- vnclipu.wi v2, v12, 1
+ vnclipu.wx v0, v8, a4
+ vnclipu.wx v2, v12, a4
vssseg2e8.v v0, (t0), a2
addi t0, t0, 2
addi t1, t1, 2
--
2.45.2
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