From c541ecf0dc38b6da3ba3d290b0db7d147775931f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= Date: Thu, 13 Jul 2023 23:16:03 +0300 Subject: [PATCH] lavc/alacdsp: unroll RISC-V V loops This increases the group multiplier as per T-Head C910 benchmarks: alac_append_extra_bits_mono_c: 803.0 alac_append_extra_bits_stereo_c: 1604.2 alac_decorrelate_stereo_c: 1077.5 LMUL=1 alac_append_extra_bits_mono_rvv_i32: 418.2 alac_append_extra_bits_stereo_rvv_i32: 693.2 alac_decorrelate_stereo_rvv_i32: 673.5 LMUL=2 alac_append_extra_bits_mono_rvv_i32: 382.2 alac_append_extra_bits_stereo_rvv_i32: 648.2 alac_decorrelate_stereo_rvv_i32: 542.7 LMUL=4 alac_append_extra_bits_mono_rvv_i32: 241.5 alac_append_extra_bits_stereo_rvv_i32: 512.7 alac_decorrelate_stereo_rvv_i32: 364.2 LMUL=8 alac_append_extra_bits_mono_rvv_i32: 239.7 alac_append_extra_bits_stereo_rvv_i32: 497.2 alac_decorrelate_stereo_rvv_i32: 426.7 --- libavcodec/riscv/alacdsp_rvv.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libavcodec/riscv/alacdsp_rvv.S b/libavcodec/riscv/alacdsp_rvv.S index 8fbe3fbe77..8efb04e0c8 100644 --- a/libavcodec/riscv/alacdsp_rvv.S +++ b/libavcodec/riscv/alacdsp_rvv.S @@ -25,7 +25,7 @@ func ff_alac_decorrelate_stereo_rvv, zve32x ld a4, 8(a0) ld a0, 0(a0) 1: - vsetvli t0, a1, e32, m1, ta, ma + vsetvli t0, a1, e32, m4, ta, ma vle32.v v24, (a4) sub a1, a1, t0 vle32.v v16, (a0) @@ -47,7 +47,7 @@ func ff_alac_append_extra_bits_mono_rvv, zve32x ld a0, (a0) ld a1, (a1) 1: - vsetvli t0, a4, e32, m1, ta, ma + vsetvli t0, a4, e32, m8, ta, ma vle32.v v16, (a0) sub a4, a4, t0 vle32.v v24, (a1) @@ -67,7 +67,7 @@ func ff_alac_append_extra_bits_stereo_rvv, zve32x ld a7, 8(a1) ld a1, (a1) 1: - vsetvli t0, a4, e32, m1, ta, ma + vsetvli t0, a4, e32, m8, ta, ma vle32.v v16, (a0) sub a4, a4, t0 vle32.v v0, (a6)