Re: Patch ping (some ^2)

[Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>]

Hello,

> > http://gcc.gnu.org/ml/gcc-patches/2004-05/msg00821.html
> >   speedup of compile time of expand
> 
> Ok.  But I guess this no longer helps your testcase much,
> now that tree-ssa places all the slots in a single list?

no, in fact it is even more important now, since it avoids
traversing this (possibly long) list most of the times.

> As for TSP-based BB reordering,
> I don't think that GCC has any strict cost/benefit guidelines,
> but this seems relatively expensive for very minor gains.

I will try checking whether this does not bring more significant
improvements on other architectures; i686/athlon seems quite
insensitive to code reordering.

Zdenek