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Re: [tree-ssa] RFC: Making control flow more explicit
On Mon, 2003-08-11 at 15:23, Zdenek Dvorak wrote:
> > PS. Hmm now I think of it, how are those numbers possible? Didn't
> > these patches break the loop optimizer???
> yes, but I have found out recently that you have already broken it
> before me :-). The code you currently produce makes the loops not to
> be recognized correctly by some of loop optimizations (loop header
> copying, unroller).
> Still I am surprised by the numbers, IMHO it should not work that well.
If all you are doing is allowing RTL to recognize loops and generate
decrement and branch or equivilent instructions, I think you'd be
suprised at the result.. it was on my short list of todo's to expand
LOOP_EXPR's because of just this.