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Re: What to remove after tree-ssa is merged?
- From: Paul Brook <paul at codesourcery dot com>
- To: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 4 Feb 2004 21:21:38 +0000
- Subject: Re: What to remove after tree-ssa is merged?
- Organization: CodeSourcery
- References: <10402042058.AA03771@vlsi1.ultra.nyu.edu>
On Wednesday 04 February 2004 8:58 pm, Richard Kenner wrote:
> It _can_ be made explicit. We may not know the actual value, but for a
> given expression we do know which instance we want to extract it from
> (by walking back to a corresponding WITH_RECORD_EXPR).
>
> But there *is* no corresponding WITH_RECORD_EXPR when the expression
> is used as a size, offset or bound: that's precisely the point.
The information must be there somewhere. Whenever these size or bound
expressions are used, it surely must be in the context of a particular
object. The RTL expanders manage it quite happily.
Paul