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Re: RFC: merging MEM_ATTRS
- From: Richard Henderson <rth at redhat dot com>
- To: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Cc: joern dot rennecke at superh dot com, gcc at gcc dot gnu dot org
- Date: Tue, 10 Feb 2004 10:14:54 -0800
- Subject: Re: RFC: merging MEM_ATTRS
- References: <10402101809.AA16699@vlsi1.ultra.nyu.edu>
On Tue, Feb 10, 2004 at 01:09:07PM -0500, Richard Kenner wrote:
> expr: If all alternatives are identical, use that, otherwise use a
> PARALLEL.
> offset: Likewise.
>
> I think that it's simpler just to use zero: the information isn't that useful
> by then.
Yep.
> They are powers of two, so just use the lowest. But since we don't
> really use the alignment of a MEM that's already in an insn, I don't
> see the cost here.
It it used, but generally only during rtl expansion.
r~