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[Bug tree-optimization/21488] [4.0/4.1 regression] Not copy propagating single-argument PHIs causes out-of-ssa coalescing failure
- From: "dnovillo at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 May 2005 23:21:19 -0000
- Subject: [Bug tree-optimization/21488] [4.0/4.1 regression] Not copy propagating single-argument PHIs causes out-of-ssa coalescing failure
- References: <20050510124823.21488.steven@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dnovillo at redhat dot com 2005-05-10 23:21 -------
Subject: Re: [4.0/4.1 regression] Not copy propagating single-argument PHIs causes out-of-ssa coalescing failure
On Tue, May 10, 2005 at 11:07:24PM -0000, pinskia at gcc dot gnu dot org wrote:
>
> ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-10 23:07 -------
> Both DOM and copyprop are messing this up.
>
Be more specific:
1- What exactly is being "messed up".
2- Why is it wrong?
3- How would "fixing" this affect PR 18048?
4- What do you think should be done differently?
You know, it is extremely irritating to read these one liners
that offer no valuable information at all.
It's not the first time you do this, please be more considerate
in the future. If you don't have anything useful to contribute,
silence is a perfectly valid option.
Diego.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21488