lavc/flacdsp: fix sign extension in R-V V wasted33

We need to use either VWCVT.X.X.V or VSEXT.VF2. The later is preferable to avoid changing VTYPE.

Rémi Denis-Courmont committed 2 years ago

Commit c3dbbb31 parent 5939f721 file · +2 −3Browse files

Showing the changes to libavcodec (1 of 1 file). Show all

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@@ -163,12 +163,11 @@ func ff_flac_wasted33_rvv, zve64x · 162 unmodified lines
163	163	ret
164	164
165	165	2: // Pessimistic case: wasted >= 32
166		− vsetvli t0, a3, e32, m4, ta, ma
	166	+ vsetvli t0, a3, e64, m8, ta, ma
167	167	vle32.v v8, (a1)
168	168	sub a3, a3, t0
169		− vwcvtu.x.x.v v16, v8
	169	+ vsext.vf2 v16, v8
170	170	sh2add a1, t0, a1
171		− vsetvli zero, zero, e64, m8, ta, ma
172	171	vsll.vx v16, v16, a2
173	172	vse64.v v16, (a0)
174	173	sh3add a0, t0, a0

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