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Re: IMA vs tree-ssa
Dale Johannesen wrote:
On Mar 8, 2004, at 2:32 PM, Mark Mitchell wrote:
Dale Johannesen wrote:
This bit seems to be working, but doesn't solve the entire problem
by any means.
The tree-based aliasing and structure-scalarizing code also think
there's only
one copy of a struct type node, and work off pointers. There may
be more places
I haven't found yet; can you think of any? (Most of the SPEC
failures seem to be
due to aliasing; it thinks different copies of a struct from
different files do not
alias, when in fact they do. This breaks lots of things.)
I believe that we should not hold up the tree-ssa merge for IMA.
Instead, we should just let IMA be broken for a while.
That's a regression. Just pointing it out.
Yes, I understand, and it's a good point.
I think the right tradeoff is to temporarily sacrifice IMA on the altar
of tree-ssa, and try to resurrect IMA later.
--
Mark Mitchell
CodeSourcery, LLC
(916) 791-8304
mark@codesourcery.com