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Re: [tree-ssa] tree-ssa vs. fold
- From: Richard Henderson <rth at redhat dot com>
- To: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Cc: gcc at gcc dot gnu dot org
- Date: Sat, 7 Jun 2003 21:14:59 -0700
- Subject: Re: [tree-ssa] tree-ssa vs. fold
- References: <10306080100.AA09545@vlsi1.ultra.nyu.edu>
On Sat, Jun 07, 2003 at 09:00:02PM -0400, Richard Kenner wrote:
> I don't think that's right. You could have an object whose size depends on
> a non-volatile variable and then modify the variable before one use of
> the size. The SAVE_EXPR forces proper evaluation in that case.
Hum, perhaps. However, it does seem like we ought be
be able to do *something* in the extremely common case of
a plain "int" variable.
r~