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[patch] more bitmap obstacks

From: Steven Bosscher <stevenb dot gcc at gmail dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Fri, 17 Aug 2012 09:03:34 +0200
Subject: [patch] more bitmap obstacks

Hello,

This reduces peak memory usage for the small test case of PR54146 by
2GB. 24hrs ago peak memory was 9.4 GB in top, but with Richi's patches
from yesterday and with this one, peak memory is now "only" 5.2GB.
About 40% of that is in IRA and reload so there is still room for
improvement, but cutting peak mem almost in half in one day is not a
bad result :-)

Bootstrapped&tested on x86_64-unknown-linux-gnu. OK for trunk?

Ciao!
Steven

Attachment: PR54146_bitmap_obstacks.diff
Description: Binary data

Follow-Ups:
- Re: [patch] more bitmap obstacks
  - From: Richard Guenther
- Re: [patch] more bitmap obstacks
  - From: Tobias Burnus

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