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10 Commits

Author SHA1 Message Date
Rémi Denis-Courmont
e33ce0d9dd lavu/fixed_dsp: R-V V fmul_window_scaled 
vector_fmul_window_scaled_fixed_c:       4393.7
vector_fmul_window_scaled_fixed_rvv_i64: 1642.7
 2023-11-23 18:57:18 +02:00
Rémi Denis-Courmont
3a134e8299 lavu/fixed_dsp: optimise R-V V fmul_reverse 
Gathers are (unsurprisingly) a notable exception to the rule that R-V V
gets faster with larger group multipliers. So roll the function to speed
it up.

Before:
vector_fmul_reverse_fixed_c:       2840.7
vector_fmul_reverse_fixed_rvv_i32: 2430.2

After:
vector_fmul_reverse_fixed_c:       2841.0
vector_fmul_reverse_fixed_rvv_i32:  962.2

It might be possible to further optimise the function by moving the
reverse-subtract out of the loop and adding ad-hoc tail handling.
 2023-11-23 18:57:18 +02:00
Rémi Denis-Courmont
f39a8790e1 lavu/fixed_dsp: R-V V vector_fmul_window 2023-10-09 19:52:28 +03:00
Rémi Denis-Courmont
10eb3b9c9f lavu/fixed_dsp: R-V V vector_fmul 
vector_fmul_fixed_c: 4.0
vector_fmul_fixed_rvv_i64: 0.5
 2023-10-09 19:52:28 +03:00
Rémi Denis-Courmont
da7a77fb0a lavu/fixed_dsp: R-V V vector_fmul_reverse 2023-10-09 19:52:28 +03:00
Rémi Denis-Courmont
bf911cc1bf lavu/fixed_dsp: R-V V vector_fmul_add 
vector_fmul_add_fixed_c: 2.2
vector_fmul_add_fixed_rvv_i64: 0.5
 2023-10-09 19:52:28 +03:00
Rémi Denis-Courmont
eb73d178ea lavu/fixed_dsp: R-V V scalarproduct 2023-10-07 17:45:39 +03:00
Rémi Denis-Courmont
3d79afbe70 lavu/fixed_dsp: unroll RISC-V V loop 
Before:
butterflies_fixed_c: 804.7
butterflies_fixed_rvv_i32: 348.2

After:
butterflies_fixed_rvv_i32: 308.7
 2023-07-17 18:48:42 +03:00
Rémi Denis-Courmont
3ba5579e55 riscv: remove unnecessary #include's 
Pointed out by Andreas Rheinhardt.
 2022-10-05 06:54:56 +02:00
Rémi Denis-Courmont
c1bb19e263 lavu/fixeddsp: RISC-V V butterflies_fixed 2022-09-27 13:19:52 +02:00