Re: [patch] Make df_ref point to a df_insn_info instead of an insn rtx

[Kenneth Zadeck <zadeck@naturalbridge.com>]

Steven Bosscher wrote:
> Hi,
>
> This is the patch to change how df_refs point to their insns.  Without
> this patch, a df_ref points directly to the insn's rtx.  And from the
> insn, we get the df_insn_info via DF_INSN_GET, which points to the
> insn def and use refs.
>
> But if we are going to have fake insns that have defs and uses, but no
> real insns (e.g. PHI nodes), we need a different way to find the
> sibling defs/uses for a given reference.  The easiest way is to just
> point directly at the df_insn_info for the insn that contains the
> reference.  This way, we can then still point at a df_insn_info for
> fake insns.
>
> Attached patch was bootstrapped&tested on ia64-unknown-linux-gnu (and
> an earlier equivalent version on powerpc).  Kenny, what do you think
> about this?  OK for trunk?
>
> Gr.
> Steven
>   
one comment:

ChangeLog: s/df_code.c/df_core.c/

fine for commit to trunk.

i bootstrapped this on ia-64 just to make sure that the ia-64 only 
passes were properly changed.

kenny