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Re: PR 23551: why should we coalesce inlined variables?
- From: "Richard Guenther" <richard dot guenther at gmail dot com>
- To: "Alexandre Oliva" <aoliva at redhat dot com>
- Cc: "Jan Hubicka" <hubicka at ucw dot cz>, "Andrew MacLeod" <amacleod at redhat dot com>, "Seongbae Park (?????????, ?????????)" <seongbae dot park at gmail dot com>, "Andrew Pinski" <pinskia at gmail dot com>, gcc-patches at gcc dot gnu dot org
- Date: Sun, 8 Jul 2007 10:39:45 +0200
- Subject: Re: PR 23551: why should we coalesce inlined variables?
- References: <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <20070707231032.GD3789@atrey.karlin.mff.cuni.cz> <firstname.lastname@example.org>
On 7/8/07, Alexandre Oliva <email@example.com> wrote:
On Jul 7, 2007, Jan Hubicka <firstname.lastname@example.org> wrote:
>> On Jun 28, 2007, Andrew MacLeod <email@example.com> wrote:
>> > I fooled around with some simple cases, and didn't find anything that
>> > made much difference. Whats a testcase you have which shows this
>> > helping?
>> Err... I'm sure I had something when I posted the patch, but the
>> build tree in which I came up with the testcase is long gone, and I no
>> longer remember the details. On a more recent build tree, I couldn't
>> really find any case in which the patch really made a difference as to
>> debug info :-(
Given the above
> this patch seems to be responsible for 90% memory consumption increase
> at rtl-optimization/28071 -O3:
And rightly so, I guess. Formerly, we discarded information to the
point of making the program utterly undebuggable.
this can't be true and so I propose to revert this patch for now. Especially
on the ground that my fear of increasing memory usage turned out to