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Re: [tree-ssa] Removal of gotos from cfg based ir
On Fri, 2003-11-14 at 20:11, Richard Henderson wrote:
> On Fri, Nov 14, 2003 at 05:09:57PM -0700, law@redhat.com wrote:
> > OK. Thanks for clarifying. I need to re-think my position on this
> > whole discussion. Something still doesn't feel right, but I'm more and
> > more inclined to give it a try.
>
> I think I'm mostly in favour. I am aware of Jan's work in
> rtl-land with cfglayout mode, and it really does seem to
> simplify some things there.
>
> I do like the idea of preserving the CFG between trees and
> rtl, if for no other reason than it seems wasteful to throw
> it away and start over, especially when it appears to be so
> trivial to preserve it.
>
> And, given that, it doesn't seem wrong to go one step
> farther and claim that's part of the tree->rtl interface.
>
Sure, the implication however is that if you don't want to run SSA, you
are going to have to build a CFG on the trees in order to generate rtl,
or have 2 ways into rtl.
Andrew