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Re: df.c and REG_EQUAL/REG_EQUIV notes
- To: Jan Hubicka <jh at suse dot cz>
- Subject: Re: df.c and REG_EQUAL/REG_EQUIV notes
- From: law at redhat dot com
- Date: Wed, 24 Oct 2001 13:39:36 -0600
- cc: gcc-patches at gcc dot gnu dot org, rth at cygnus dot com, patches at x86-64 dot org
- Reply-To: law at redhat dot com
In message <20010925162110.D13734@atrey.karlin.mff.cuni.cz>you write:
>
> Hi,
> Almost any optimization pass needs to deal with REG_EQUIL/EQUAL notes.
> To do so in passes based on dataflow module we need to represent the
> "uses" of values in these instructions somehow, as otherwise it is
> really dificult to track down where the notes needed to be updated lie.
>
> Honza
>
> Tue Sep 25 16:18:51 CEST 2001 Jan Hubicka <jh@suse.cz>
> * df.h (DF_EQUIV_NOTES): New constant.
> (df_insn_refs_record): Record uses inside or REG_EQUIV/EQUAL notes
> when asked for.
Approved. Please install.
jeff