diff options
| author | Rémi Denis-Courmont <remi@remlab.net> | 2023-10-29 18:22:08 +0200 |
|---|---|---|
| committer | Rémi Denis-Courmont <remi@remlab.net> | 2023-11-01 22:53:26 +0200 |
| commit | d06fd18f8f4c6a81ef94cbb600620d83ad51269d (patch) | |
| tree | e1c2b313c7fcd4120cd1e0ad23159efcdf4efe69 | |
| parent | b0aba7dd0c1ee34941370997fd20049150f04a36 (diff) | |
lavc/sbrdsp: R-V V neg_odd_64
With 128-bit vectors, this is mostly pointless but also harmless.
Performance gains should be more noticeable with larger vector sizes.
neg_odd_64_c: 76.2
neg_odd_64_rvv_i64: 74.7
| -rw-r--r-- | libavcodec/riscv/sbrdsp_init.c | 5 | ||||
| -rw-r--r-- | libavcodec/riscv/sbrdsp_rvv.S | 17 |
2 files changed, 22 insertions, 0 deletions
diff --git a/libavcodec/riscv/sbrdsp_init.c b/libavcodec/riscv/sbrdsp_init.c index e0e62278b0..1b85b2cae9 100644 --- a/libavcodec/riscv/sbrdsp_init.c +++ b/libavcodec/riscv/sbrdsp_init.c @@ -25,6 +25,7 @@ void ff_sbr_sum64x5_rvv(float *z); float ff_sbr_sum_square_rvv(float (*x)[2], int n); +void ff_sbr_neg_odd_64_rvv(float *x); av_cold void ff_sbrdsp_init_riscv(SBRDSPContext *c) { @@ -35,5 +36,9 @@ av_cold void ff_sbrdsp_init_riscv(SBRDSPContext *c) c->sum64x5 = ff_sbr_sum64x5_rvv; c->sum_square = ff_sbr_sum_square_rvv; } +#if __riscv_xlen >= 64 + if ((flags & AV_CPU_FLAG_RVV_I64) && (flags & AV_CPU_FLAG_RVB_ADDR)) + c->neg_odd_64 = ff_sbr_neg_odd_64_rvv; +#endif #endif } diff --git a/libavcodec/riscv/sbrdsp_rvv.S b/libavcodec/riscv/sbrdsp_rvv.S index 4684630953..b510190b15 100644 --- a/libavcodec/riscv/sbrdsp_rvv.S +++ b/libavcodec/riscv/sbrdsp_rvv.S @@ -67,3 +67,20 @@ func ff_sbr_sum_square_rvv, zve32f NOHWF fmv.x.w a0, fa0 ret endfunc + +#if __riscv_xlen >= 64 +func ff_sbr_neg_odd_64_rvv, zve64x + li a1, 32 + li t1, 1 << 63 +1: + vsetvli t0, a1, e64, m8, ta, ma + vle64.v v8, (a0) + sub a1, a1, t0 + vxor.vx v8, v8, t1 + vse64.v v8, (a0) + sh3add a0, t0, a0 + bnez t0, 1b + + ret +endfunc +#endif |