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Re: RFA: tree DSE bug

On Thu, 2005-11-10 at 23:19 -0500, Daniel Jacobowitz wrote:

> I got a lot of feedback about this on IRC, so:
> 
> What advantage does the simpler test have, if any, now that I've gone
> and figured out the correct fix to the existing algorithm?
One could easily argue that not walking through PHI arguments associated
with backedges *is* fixing the existing algorithm.

> All the rest of this is independent of the CFG; it seems a bit unclean
> to me to rely on backedge detection for an otherwise dominance-based
> algorithm.
I don't see how it's unclean at all.


jeff
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