------- Comment #2 from ubizjak at gmail dot com 2010-01-10 17:42 -------
(In reply to comment #0)
> Furthermore, math-library function fminf()/fmaxf() (and fmin()/fmax() for
> double) would benefit from map to intrinsic minss/maxss processing. Now
> they
> cause math library calls, where they are implemented as minss/maxss.
Use -ffast-math (which I recommend for everything that processes data from the
real world).
> Another optimization adventure would be to be able to unroll that loop, and
> use
> packed float values in xmm registers to do up to 4 operations in parallel.
> minreg/maxreg/sumreg could be described at C level as:
> float minreg[4];
> and code would have an explicit loop from 0 to 3 processing sample sets.
Done in 4.5. Try with -O2 -ffast-math -ftree-vectorize.
>
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |WORKSFORME
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42682
