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Re: [tree-ssa] Out of SSA status and issues
- From: Andrew MacLeod <amacleod at redhat dot com>
- To: Jeff Law <law at redhat dot com>
- Cc: Diego Novillo <dnovillo at redhat dot com>,gcc mailing list <gcc at gcc dot gnu dot org>
- Date: 12 May 2003 13:12:00 -0400
- Subject: Re: [tree-ssa] Out of SSA status and issues
- References: <200305121708.h4CH86cS015911@speedy.slc.redhat.com>
On Mon, 2003-05-12 at 13:08, law@redhat.com wrote:
> In message <1052755028.2743.368.camel@p4>, Andrew MacLeod writes:
> >On another note, shouldn't the into-ssa-pass's copy propagation only be
> >turned on when -ftree-copyprop is specified? I think we do it all the
> >time right now... thus my problem in libstdc++ even without
> >-ftree-copyprop...
> Probably...
>
>
> FWIW, I dug up my changes to identify the problem variables (those
> occurring in abnormal PHIs) and cobbled together the two lines of
> code necessary to use that information to avoid copy propagating
> those variables during SSA renaming.
>
> Interested in playing with it to see if it resolves your problems?
>
Absolutely :-)
Andrew