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Re: [PR libmudflap/53952] don't check access to non-mem decls
- From: Richard Biener <richard dot guenther at gmail dot com>
- To: Alexandre Oliva <aoliva at redhat dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 6 Dec 2012 10:18:21 +0100
- Subject: Re: [PR libmudflap/53952] don't check access to non-mem decls
- References: <ord2ynn856.fsf@livre.localdomain>
On Thu, Dec 6, 2012 at 4:59 AM, Alexandre Oliva <aoliva@redhat.com> wrote:
> SRA (and perhaps other passes?) introduce “addressable” MEM_REFs to
> variables that were not addressable at the time mudflap1 ran registering
> valid memory ranges; when mudflap2 ran to emit the checks, it found such
> MEM_REFs, marking the variables as addressable and emitting checks that
> will fail at run time.
>
> This patch refactors mem_ref_refers_to_non_mem_p so that it retains its
> behavior, while introducing a variant for use by tree-mudflap.c that
> assumes a variable that doesn't have its RTL set may end up in a
> register.
>
> Regstrapped on x86_64-linux-gnu. Ok to install?
Ok.
Thanks,
Richard.
>
>
> --
> Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/
> You must be the change you wish to see in the world. -- Gandhi
> Be Free! -- http://FSFLA.org/ FSF Latin America board member
> Free Software Evangelist Red Hat Brazil Compiler Engineer
>