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Re: Register window support in DWARF-2
- From: Richard Henderson <rth at redhat dot com>
- To: Eric Botcazou <ebotcazou at libertysurf dot fr>
- Cc: gcc at gcc dot gnu dot org, Jason Merrill <jason at redhat dot com>
- Date: Tue, 23 Nov 2004 16:37:52 -0800
- Subject: Re: Register window support in DWARF-2
- References: <200411240022.55423.ebotcazou@libertysurf.fr>
On Wed, Nov 24, 2004 at 12:26:11AM +0100, Eric Botcazou wrote:
> What about adding a new rule to handle UNSPEC_VOLATILEs with the
> help of a new target hook? Something like:
>
> Rule 15:
> (set <reg> {unspec, unspec_volatile})
> effects: target-dependent
That, or a magic attribute, such that
#ifdef HAVE_ATTR_window_save
if (RTX_FRAME_RELATED_P (insn)
&& get_attr_window_save (insn))
...
#endif
r~