Re: [patches] flow based jump pass take 2

[Richard Henderson <rth at redhat dot com>]

On Fri, Jun 29, 2001 at 11:33:23AM +0200, Jan Hubicka wrote:
> So perhaps I can turn aux into enum of integer and pointer and use it for
> flags directly, so I avoid memory allocation and AUX redirecting before
> pass.

That would make sense -- there is at least one pass already
that plays games with casting the pointer to size_t and back.

> At the moment I am shooting for corectness of the patch.  There are some dark
> sides, such as USE and CLOBBER expressions.  Old jump pass takes a lot of
> care to move them when restructuring flowgraph.  I simply zap them and I am
> not sure this is good idea.

Careful here -- I don't think jump was completely correct
either.  I can't remember specifics at the moment; just a
feeling.


r~