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Re: Your change of September 11, 1998
- To: rth at redhat dot com
- Subject: Re: Your change of September 11, 1998
- From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
- Date: Tue, 16 Jan 01 07:00:12 EST
- Cc: gcc at gcc dot gnu dot org
Actually, this begs the question of why we have call_value at all?
If we distinguished between death via set and death via clobber,
it might matter. Flow doesn't though. Perhaps reorg and its
mildly broken forward-scanning analysis cares?
Having thought about this overnight, the issue isn't *death*, but *life*.
It indicates which registers are live after the return and that is
useful information, which means we have to get it right.