From: Richard Guenther <rguenther@suse.de>
To: Steven Bosscher <stevenb.gcc@gmail.com>
Cc: Ulrich Weigand <uweigand@de.ibm.com>, gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] Remove basic_block->loop_depth
Date: Tue, 14 Aug 2012 11:01:00 -0000 [thread overview]
Message-ID: <alpine.LNX.2.00.1208141257570.28649@zhemvz.fhfr.qr> (raw)
In-Reply-To: <CABu31nPSFM8pJ1VYhLxQjCUwpMkYeVvQOe9jUuC-hAGqrkpP3g@mail.gmail.com>
On Tue, 14 Aug 2012, Steven Bosscher wrote:
> On Tue, Aug 14, 2012 at 12:48 PM, Richard Guenther <rguenther@suse.de> wrote:
> > If SPU md reorg would like to look at loop structures it should
> > compute them. Simply call flow_loops_find, which hopefully works
> > in CFG RTL mode (which I think is the mode available from md reorg?).
>
> No, the CFG is destroyed just before MD reorg, because most MD reorgs
> are not CFG aware.
>
> But some back-ends re-surrect it (bfin, ia64, c6x, etc...), and do
> compute loops (c6x at least).
I suppose we could push down freeing the CFG to the individual MD
reorgs and make the default MD reorg simply free the CFG ...
Richard.
next prev parent reply other threads:[~2012-08-14 11:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-13 13:02 Richard Guenther
2012-08-14 10:16 ` Ulrich Weigand
2012-08-14 10:51 ` Richard Guenther
2012-08-14 11:00 ` Steven Bosscher
2012-08-14 11:01 ` Richard Guenther [this message]
2012-08-15 12:04 ` [rfc] Fix SPU build (Re: [PATCH] Remove basic_block->loop_depth) Ulrich Weigand
2012-08-15 12:07 ` Richard Guenther
2012-08-15 22:18 ` Ulrich Weigand
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