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[tree-ssa] Merging with bnw-simple
- From: Diego Novillo <dnovillo at redhat dot com>
- To: gcc at gcc dot gnu dot org
- Cc: Jason Merrill <jason at redhat dot com>, "Frank Ch. Eigler" <fche at redhat dot com>, Steven Bosscher <s dot bosscher at student dot tudelft dot nl>
- Date: Tue, 24 Sep 2002 10:02:50 -0400
- Subject: [tree-ssa] Merging with bnw-simple
- Organization: Red Hat Canada
Now that we have a working version of the re-designed tree IR, we
have to think about merging it with tree-ssa. I'd like opinions
on how we should proceed:
1- Merge the changes into tree-ssa-branch directly. This will
likely break all the current tree optimizers and mudflap. I
would commit the patch after fixing basic things like the
flowgraph and DFA/SSA. Bootstraps on the branch would likely
be broken for a while until we sort everything out.
2- Create a new temporary branch, fix everything there and merge
the changes into tree-ssa.
I am partially in favor of option #1. It would stop new development
for a while, but it would avoid the potentially continuous pain
of having to fix code that targets the old IR.
I will spend the next 1-2 weeks merging the code in my local
tree. Maybe the breakage is not as severe as I think. But the
new IR will likely break g95, mudflap and the optimizers.
Opinions?
Diego.