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Re: [RFC] Contributing tree-ssa to mainline
- From: Daniel Berlin <dberlin at dberlin dot org>
- To: Joe Buck <Joe dot Buck at synopsys dot COM>
- Cc: gcc at gcc dot gnu dot org,s dot bosscher at student dot tudelft dot nl,Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Date: Mon, 19 Jan 2004 18:43:27 -0500
- Subject: Re: [RFC] Contributing tree-ssa to mainline
- References: <10401170324.AA15949@vlsi1.ultra.nyu.edu> <20040119153026.A21678@synopsys.com>
I'd like to point out that this whole thread is still getting us
somewhere, and not just filling up inboxes.
Seriously though, I think we've reached the point of diminishing gains.
We now know how everyone feels.
It appears that this is "most people are in favor, some people are
against", but everyone seems to have some specific criteria they want
met before merging.
I'd also like to point out that tree-ssa is, by various benchmarks
pointed out earlier, in the worst case, slightly slower than the
mainline in compile time, even though it adds *30* optimization passes.
That's right.
Thirty.
Check tree-optimize if you don't believe me.
That's quite an accomplishment in and of itself if you ask me.
Anyway, It would be more productive if we were to try to concentrate
on a specific set of merge criteria for tree-ssa, than continue to
discuss the benefits or disadvantages of it (since it seems clear the
overwhelming number of people think it has great benefit already)
You friendly neighborhood cat herder,
Dan