[Rd] O2 optimization produces wrong code (PR#5315)
p.dalgaard at biostat.ku.dk
Tue Nov 25 21:55:23 MET 2003
Duncan Murdoch <dmurdoch at pair.com> writes:
> On Tue, 25 Nov 2003 15:47:01 +0000 (GMT), Prof Brian Ripley
> <ripley at stats.ox.ac.uk> wrote :
> >This is a long-known problem: one example is the MASS example in the
> >script ch15.R, and that has gone wrong on platforms other than Windows.
> >It has been reported to the maintainer in the past.
> Should we back off to something less aggressive than -O2?
Traditionally, we've prioritized performance and used cases like this
to file bugs for the compiler writers. But is this really a compiler
problem or a problem with badly written code in akima??
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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