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Re: Combining SCOPE regions
- From: law at redhat dot com
- To: Jan Hubicka <jh at suse dot cz>
- Cc: gcc at gcc dot gnu dot org
- Date: Thu, 20 Jun 2002 10:59:18 -0600
- Subject: Re: Combining SCOPE regions
- Reply-to: law at redhat dot com
In message <20020620065715.GD18693@atrey.karlin.mff.cuni.cz>, Jan Hubicka
writes:
> the handling of SEQUENCEs opens quite interesting problem - how do we
> want to handle instruction that "belongs" to multiple regions - like
> when for instance combine combines instructions from two different
> regions. I am thinking about writing fucntion "combined_scope (scope1,
> scope2)" that will simply choose the inner one in case they are nested
> or return the first one in case it is non-NULL. Is there better way to
> do so?
I think we just have to pick one. This is the kind of case where optimization
will make debugging harder.
jeff