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Re: on non-rtl function info
- To: law at cygnus dot com
- Subject: Re: on non-rtl function info
- From: Joern Rennecke <amylaar at cygnus dot co dot uk>
- Date: Tue, 13 Oct 1998 19:54:05 +0100 (BST)
- Cc: rth at cygnus dot com, egcs at cygnus dot com, crux at pool dot informatik dot rwth-aachen dot de
> > On the subject of the first, I'm not sure what is the best thing to do.
> > Something that came to mind was having documented global stores of such
> > information. Each passes would record when something it does kills the
> > information, and each pass would begin with assertions that verify that
> > the required info is still live, possibly regenerating it if not.
> That may be OK short term, but long term we should be thinking about using
> data structures that we can update on the fly or incrementally at the end
> of a pass.
Hmmm, we have this with REG_DEAD notes in reload - if
PRESERVE_DEATH_INFO_REGNO_P is defined - and are moving away from it...