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Re: tree inlining and alloca

From: Gerald Pfeifer <pfeifer at dbai dot tuwien dot ac dot at>
To: Geoff Keating <geoffk at geoffk dot org>
Cc: Jan Hubicka <jh at suse dot cz>, "" <gcc-patches at gcc dot gnu dot org>
Date: Fri, 22 Nov 2002 21:30:37 +0100 (CET)
Subject: Re: tree inlining and alloca
References: <20021116182530.GA17736@atrey.karlin.mff.cuni.cz><jm7kfdkug9.fsf@desire.geoffk.org>

On Sat, 16 Nov 2002, Geoff Keating wrote:
>> I've just noticed that my callgraph inlinig patch causes SPEC2000 GCC
>> to require 2GB of memory instead of 256MB it required previously.  The
>> reason is that function that does use alloca got inlined so the alloca
>> blocks are not garbagecollected as the programmer intended and we
>> allocate O(n^4) instead of O(n^2) memory!
>> [...]
>> Bootstrap/regtesting on mainline in progress.  OK if it passes?
>> What about 3.2 branch?
> OK for mainline.  I think 3.2 branch is closed.

No longer. ;-)

Is Jan's patch fine for 3.2.2?

Gerald
-- 
Gerald "Jerry" pfeifer@dbai.tuwien.ac.at http://www.dbai.tuwien.ac.at/~pfeifer/

Follow-Ups:
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References:
- tree inlining and alloca
  - From: Jan Hubicka
- Re: tree inlining and alloca
  - From: Geoff Keating

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