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Re: PR3256: Exceptions vs. delay slots
- To: mike stump <mrs at windriver dot com>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Subject: Re: PR3256: Exceptions vs. delay slots
- From: Mark Mitchell <mark at codesourcery dot com>
- Date: Thu, 19 Jul 2001 16:18:43 -0700
- cc: rth at redhat dot com
> I could have sworn that we wanted to track lifetimes of things like i,
We definitely want to. :-) It's easy to get this right if you still
have a CFG around, and then you can look for instructions that you
dominate, etc., rather than simply proceeding directly in front of the
jump/call. So, we would get better filling and simpler code. But,
I dream.
> And it isn't just exceptions. A non-local goto that is well placed
> will trip this up in the exact same way for the exact same reason.
Good point. I'll not fix this, but I'll mention it in the comment.
--
Mark Mitchell mark@codesourcery.com
CodeSourcery, LLC http://www.codesourcery.com