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Re: Tree-ssa status with POOMA
On Thu, 5 Feb 2004, Richard Guenther wrote:
> Hi!
>
> I promised to give some updates on tree-ssa and POOMA. Tree-ssa is
> currently failing three regression tests that 3.4 succeeds in. One
> is a clear miscompilation resulting in wrong results, two look like the
> same bug causing a SIGSEGV. As usual the testcases would be incredibly
> large and hard to debug, so this is mainly a heads-up (though 3.3.3 won't
> be any better here).
>
> For my real-world application I'm quite happy with tree-ssa:
>
> -O2 -funroll-loops -ffast-math -march=athlon -fno-exceptions
>
> memory compile-time run-time stripped static size
> tree-ssa 450MB 3m57s 46s 1729680
> gcc3.4 530MB 3m16s 44s 1734596
With -ftree-points-to=andersen I get:
890MB 5m14s 41s 1725584
a nice 10% speedup (but that memory usage!).
Richard.
--
Richard Guenther <richard dot guenther at uni-tuebingen dot de>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/