lavu/fixed_dsp: unroll RISC-V V loop

Before: butterflies_fixed_c: 804.7 butterflies_fixed_rvv_i32: 348.2

Rémi Denis-Courmont committed 3 years ago

Commit 3d79afb1 parent d8ea5f51 file · +1 −1Browse files

Unified · Split

@@ -23,7 +23,7 @@ · 22 unmodified lines
23	// (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1]	23	// (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1]
24	func ff_butterflies_fixed_rvv, zve32x	24	func ff_butterflies_fixed_rvv, zve32x
25	1:	25	1:
26	vsetvli t0, a2, e32, m1, ta, ma	26	vsetvli t0, a2, e32, m4, ta, ma
27	vle32.v v16, (a0)	27	vle32.v v16, (a0)
28	sub a2, a2, t0	28	sub a2, a2, t0
29	vle32.v v24, (a1)	29	vle32.v v24, (a1)

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