Re: [FFmpeg-devel] [PATCH 2/2] lavc/blockdsp: R-V V clear_blocks

[flow gg <hlefthleft@gmail.com>]

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Ok, updated it in the reply

Rémi Denis-Courmont <remi@remlab.net> 于2024年2月2日周五 04:13写道：

> You should probably use an assembler macro to repeat the code.
>
>
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From 5e08d728470fde81cba3e109932e4e22d1adc2ce Mon Sep 17 00:00:00 2001
From: sunyuechi <sunyuechi@iscas.ac.cn>
Date: Thu, 1 Feb 2024 15:41:09 +0800
Subject: [PATCH 2/2] lavc/blockdsp: R-V V clear_blocks

C908:
blockdsp.clear_blocks_c: 128.2
blockdsp.clear_blocks_rvv_i64: 102.5
---
 libavcodec/riscv/blockdsp_init.c |  2 ++
 libavcodec/riscv/blockdsp_rvv.S  | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/libavcodec/riscv/blockdsp_init.c b/libavcodec/riscv/blockdsp_init.c
index 5370418687..59b2f9d47b 100644
--- a/libavcodec/riscv/blockdsp_init.c
+++ b/libavcodec/riscv/blockdsp_init.c
@@ -26,6 +26,7 @@
 #include "libavcodec/blockdsp.h"
 
 void ff_clear_block_rvv(int16_t *block);
+void ff_clear_blocks_rvv(int16_t *block);
 
 av_cold void ff_blockdsp_init_riscv(BlockDSPContext *c)
 {
@@ -34,6 +35,7 @@ av_cold void ff_blockdsp_init_riscv(BlockDSPContext *c)
 
     if (flags & AV_CPU_FLAG_RVV_I64 && ff_get_rv_vlenb() >= 16) {
         c->clear_block = ff_clear_block_rvv;
+        c->clear_blocks = ff_clear_blocks_rvv;
     }
 #endif
 }
diff --git a/libavcodec/riscv/blockdsp_rvv.S b/libavcodec/riscv/blockdsp_rvv.S
index e85697613a..ad97cb64df 100644
--- a/libavcodec/riscv/blockdsp_rvv.S
+++ b/libavcodec/riscv/blockdsp_rvv.S
@@ -27,3 +27,22 @@ func ff_clear_block_rvv, zve64x
 
         ret
 endfunc
+
+func ff_clear_blocks_rvv, zve64x
+        vsetivli      zero, 16, e64, m8, ta, ma
+        vmv.v.i       v0, 0
+
+        .macro vec_store_inc
+        vse64.v       v0, (a0)
+        addi          a0, a0, 128
+        .endm
+
+        vec_store_inc
+        vec_store_inc
+        vec_store_inc
+        vec_store_inc
+        vec_store_inc
+        vse64.v       v0, (a0)
+
+        ret
+endfunc
-- 
2.43.0


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