ffmpeg | branch: master | Rémi Denis-Courmont <r...@remlab.net> | Sun Jul 28 21:40:52 2024 +0300| [54ae270213b5a98f923bfd4506e450b2e764ede2] | committer: Rémi Denis-Courmont
lavc/rv34dsp: use saturating add/sub for R-V V DC add T-Head C908 (cycles): rv34_idct_dc_add_c: 113.2 rv34_idct_dc_add_rvv_i32: 48.5 (before) rv34_idct_dc_add_rvv_i32: 39.5 (after) > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=54ae270213b5a98f923bfd4506e450b2e764ede2 --- libavcodec/riscv/rv34dsp_rvv.S | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/libavcodec/riscv/rv34dsp_rvv.S b/libavcodec/riscv/rv34dsp_rvv.S index 478bc0a860..fc0ffec4fe 100644 --- a/libavcodec/riscv/rv34dsp_rvv.S +++ b/libavcodec/riscv/rv34dsp_rvv.S @@ -41,14 +41,17 @@ func ff_rv34_idct_dc_add_rvv, zve32x mul t1, t1, a2 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 - vsetivli zero, 4, e8, mf4, ta, ma - vsse32.v v0, (a0), a1 + vsetivli zero, 4*4, e8, m2, ta, ma + bgez t1, 1f + neg t1, t1 + vssubu.vx v0, v0, t1 + vsetivli zero, 4, e8, mf4, ta, ma + vsse32.v v0, (a0), a1 + ret +1: + vsaddu.vx v0, v0, t1 + vsetivli zero, 4, e8, mf4, ta, ma + vsse32.v v0, (a0), a1 ret endfunc _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
