[ tree-ssa] PRE problem

[Diego Novillo]

On Fri, 2004-02-20 at 14:59, law@redhat.com wrote:
> In message <1077304036.3169.162.camel@localhost.localdomain>, Diego Novillo wri
> tes:
>  >
>  >See if this (untested) patch fixes your problem.  We were not calling
>  >propagate_value in generate_expr_as_of_bb.  This fixes PR14153, but I
>  >haven't checked other places in PRE where we may be doing the same.
> So if you really think this is going to work, build c, c++ (no need to
> fully bootstrap), then try to build libstdc++.
> 
I just did :)  Attached.

> Trust me, this ain't sufficient.  It was the first thing I tried.
> 
Have you got any other local changes?  Your idea of having PRE check
whether the propagation is valid sounded good to me.  So, perhaps I'm
just not tickling the bug with a pristine branch.


Diego.
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