http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51980
Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target|arm-linux-androideabi |arm-linux-androideabi,
| |arm*-*-*eabi
--- Comment #3 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> 2012-01-27
15:25:29 UTC ---
(In reply to comment #1)
> It looks like the neon builtins are not properly marked as pure/const, that
> certainly is a road-block for optimizations.
> The heavy use of UNSPECs is
> another.
yes, one other problem is that a lot of the neon intrinsics don't expand into
an equivalent RTL - you still need the unspecs for the polynomial types but in
general a large number of the intrinsics that are in the form of unspecs could
use the underlying vec_ expanders that are also present.
>
> Confirmed.
