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Re: [RFC] gcc feature request: Moving blocks into sections
- From: Marek Polacek <polacek at redhat dot com>
- To: Linus Torvalds <torvalds at linux-foundation dot org>
- Cc: Steven Rostedt <rostedt at goodmis dot org>, LKML <linux-kernel at vger dot kernel dot org>, gcc <gcc at gcc dot gnu dot org>, Ingo Molnar <mingo at kernel dot org>, Mathieu Desnoyers <mathieu dot desnoyers at efficios dot com>, "H. Peter Anvin" <hpa at linux dot intel dot com>, Thomas Gleixner <tglx at linutronix dot de>, David Daney <ddaney dot cavm at gmail dot com>, Behan Webster <behanw at converseincode dot com>, Peter Zijlstra <peterz at infradead dot org>, Herbert Xu <herbert at gondor dot hengli dot com dot au>
- Date: Mon, 5 Aug 2013 21:40:10 +0200
- Subject: Re: [RFC] gcc feature request: Moving blocks into sections
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On Mon, Aug 05, 2013 at 11:34:55AM -0700, Linus Torvalds wrote:
> On Mon, Aug 5, 2013 at 11:24 AM, Linus Torvalds
> <torvalds@linux-foundation.org> wrote:
> >
> > Ugh. I can see the attraction of your section thing for that case, I
> > just get the feeling that we should be able to do better somehow.
>
> Hmm.. Quite frankly, Steven, for your use case I think you actually
> want the C goto *labels* associated with a section. Which sounds like
> it might be a cleaner syntax than making it about the basic block
> anyway.
FWIW, we also support hot/cold attributes for labels, thus e.g.
if (bar ())
goto A;
/* ... */
A: __attribute__((cold))
/* ... */
I don't know whether that might be useful for what you want or not though...
Marek