Hi Reimar,
On Sat, 16 Jan 2021, Martin Storsjö wrote:
+.macro idct_16x16 bitdepth
+function ff_hevc_idct_16x16_\bitdepth\()_neon, export=1
+//r0 - coeffs
+ mov x15, lr
+
Binutils doesn't recognize "lr" as alias for x30
It didn’t have an issue in the Debian unstable VM?
That seems like the kind of workaround where it would be
better to leave a comment with more info, if you know
what exactly is affected.
Binutils 2.28 doesn't recognize "lr" while 2.30 does, it seems.
FWIW, all the existing aarch64 assembly just uses "x30" to refer to this
register, none of it uses "lr".
Do you want to follow up on this patch? IIRC changing it to use "x30"
instead of "lr" was the only blocker from my point of view (and the
add_residual patch that goes on top of it was mostly fine as well)?
// Martin
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