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Re: [PATCH] Simplify FRE parts of PRE, try to save some memory
- From: Steven Bosscher <stevenb dot gcc at gmail dot com>
- To: Richard Guenther <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 4 Sep 2012 16:26:28 +0200
- Subject: Re: [PATCH] Simplify FRE parts of PRE, try to save some memory
- References: <alpine.LNX.2.00.1209041517530.28649@zhemvz.fhfr.qr>
On Tue, Sep 4, 2012 at 3:19 PM, Richard Guenther <rguenther@suse.de> wrote:
>
> Currently computa_avail consumes an unreasonable amount of memory
> in the FRE case for PR46590. The following patch makes some
> obvious adjustments but does not cure the underlying issue.
I don't think there's any way to cure the underlying issue, it's just
the result of having SSA form that so many values are available. You
can improve the representation of the sets (e.g. something similar to
the views of the tree-ssa-live machinery) but that's it.
Ciao!
Steven