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[Bug tree-optimization/29333] Jump threading getting in the way of PHI-OPT
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 23 Jan 2012 10:25:20 +0000
- Subject: [Bug tree-optimization/29333] Jump threading getting in the way of PHI-OPT
- Auto-submitted: auto-generated
- References: <bug-29333-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29333
--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-23 10:25:20 UTC ---
(In reply to comment #6)
> (In reply to comment #5)
> > This is the patch which I am testing:
>
> I Have a slightly different one since we should do a few more things before the
> mergephi and also we ccannot remove the first mergephi as that causes vpr to
> lose some optimizations.
I think it makes sense to do mergephi before phiopt. mergephi should not
be required for VRP - can you file a bug with a testcase?