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Re: [PATCH] Decrease integer-share-limit

From: Paolo Carlini <paolo dot carlini at oracle dot com>
To: Richard Guenther <rguenther at suse dot de>
Cc: gcc-patches at gcc dot gnu dot org
Date: Thu, 16 Aug 2012 16:36:42 +0200
Subject: Re: [PATCH] Decrease integer-share-limit
References: <alpine.LNX.2.00.1208161533090.28649@zhemvz.fhfr.qr>

Hi,

On 08/16/2012 03:39 PM, Richard Guenther wrote:

This decreases the integer-share-limit to make sure the TREE_VEC we
allocate for the small cached integers has a reasonable size for
our GC memory allocator.

Out of curiosity (just in case you hav two spare minutes) do you have any idea why this is so? I mean, naively one would think that allowing for any 8 bit constant would be a nice idea; puzzlingly, however the comment in the code says just "experimentation". I'm wondering if tweaking a bit the memory allocator itself could allow for the full 8 bit range without a big memory waste...

Paolo.

Follow-Ups:
- Re: [PATCH] Decrease integer-share-limit
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References:
- [PATCH] Decrease integer-share-limit
  - From: Richard Guenther

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