cause of all the mainline Sparc regressions
Jan Hubicka
jh@suse.cz
Thu May 23 07:49:00 GMT 2002
> From: Jan Hubicka <jh@suse.cz>
> Date: Thu, 23 May 2002 16:23:07 +0200
>
> Hmm, unless I am mistaken, only purpose for finish_eh_gneration to
> cleanup cfg is to kill unreachable code. I guess in that case, it would
> be better to dirrectly call delete_unreachable_blocks and since this is
> already done, perhaps we don't need anything.
>
> But if you delete unreachable blocks, shouldn't you optimize the
> CFG in the hopes that EH will end up doing less work?
I think EH ends up with less work only when some receivers become
unreachable and this can happen only from unreachable/dead code removal,
I guess it does not happen by the optimization cleanup_cfg does except
for code removal. We can save some overhead then.
>
> I think we should just add the new flag bit and keep things the
> way it is. I'm going to check the following for now, so people
> can get work done. And if we find a better solution, my change
> can be reverted.
>
> Ok?
OK.
Honza
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