PR #21251 opened by Rémi Denis-Courmont (Courmisch) URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21251 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21251.patch
On riscv32, the result must be narrowed from 63 to 32 bit before being moved to the scalar side. From 7da8dd7859a11a8ce7cd0ba1e3c61eead89a8dd9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= <[email protected]> Date: Sun, 21 Dec 2025 11:58:08 +0200 Subject: [PATCH] lavu/fixed_dsp: fix scalarproduct on riscv32 On riscv32, the result must be narrowed from 63 to 32 bit before being moved to the scalar side. --- libavutil/riscv/fixed_dsp_rvv.S | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavutil/riscv/fixed_dsp_rvv.S b/libavutil/riscv/fixed_dsp_rvv.S index e60ee8cad5..9424470bad 100644 --- a/libavutil/riscv/fixed_dsp_rvv.S +++ b/libavutil/riscv/fixed_dsp_rvv.S @@ -197,8 +197,14 @@ func ff_scalarproduct_fixed_rvv, zve64x, zba vsetvli t0, zero, e64, m8, ta, ma vredsum.vs v0, v8, v0 +#if __riscv_xlen >= 64 vmv.x.s a0, v0 srai a0, a0, 31 +#else + vsetivli zero, 1, e32, mf2, ta, ma + vnsra.wi v1, v0, 31 + vmv.x.s a0, v1 +#endif ret endfunc -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
