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Re: [PATCH] Add pointer_no_capture function attribute
- From: Richard Guenther <rguenther at suse dot de>
- To: MOENE Toon <toon dot moene at cnrm dot meteo dot fr>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Wed, 8 Mar 2006 17:46:23 +0100 (CET)
- Subject: Re: [PATCH] Add pointer_no_capture function attribute
- References: <440F07C0.8070700@cnrm.meteo.fr>
On Wed, 8 Mar 2006, MOENE Toon wrote:
> > This patch allows to improve call clobbering information by attaching
> > pointer_no_capture attribute to functions that are not escape points
> > (such as free, realloc or sincos for C99 and most of the fortran library
> > intrinsics).
>
> Hmmm, aren't most of the Fortran intrinsics "pure" anyway ?
No, I'm talking about things like matmul, that take pointer arguments
which at the moment will cause any further call clobbering the matmul
arguments. But the arguments do not escape through matmul.
Richard.