This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [PR rtl-optimization/39077] [4.3/4.4/4.5/4.6 Regression] GCSE-optimization causes enormous binary size increase (~20 times !)

From: Jeff Law <law at redhat dot com>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 13 Jan 2011 06:44:26 -0700
Subject: Re: [PR rtl-optimization/39077] [4.3/4.4/4.5/4.6 Regression] GCSE-optimization causes enormous binary size increase (~20 times !)
References: <4D2E7B19.6060708@redhat.com> <AANLkTinb7umEnRuhkg2ibzGcKSsonH47dAhzkZeMvGej@mail.gmail.com> <4D2EFFE3.3090304@redhat.com> <AANLkTinc2Uq8hvWmDO-fobBvC883m6AoCcm8O8dfV21c@mail.gmail.com>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 01/13/11 06:42, Richard Guenther wrote:
> 
> What we care about is how often a given index/bit is set across all the
> entries in the pre_insert and pre_delete sbitmap vectors.  Doing a
> popcount won't tell us that, it'll tell us how many bits are set in a
> given sbitmap.
> 
>> Ah, too little coffee for me at the time of review.
No worries, I made the same mistake when mentally sketching out the patch.

Jeff
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/

iQEcBAEBAgAGBQJNLwG6AAoJEBRtltQi2kC7MEgH/ifvEZ44jA4vd/1AeMTjGd3q
GDjwEvcax0NTyazX3+HNachLwwJeVh2zaZcb5GNELYXFRW/kiE2voXW6KzhoyCF3
P6pwNrReQnDWj+MIRxuWpDmn6RtbZACnsMG7niSZJ5Rd2K3Dz5aK6g/jgBOKn+Oz
dthmQQvbfRBr8rWWgdKjsJqxqwlfDkAS40Kgw5NR+rM8gCsEv5RkF0eC30d/YgzZ
JX9idLXDbWGJkixKoaVsy9fm725dNwDrav98c+i6uJxSBb6W/9g6yex+/0nwxv7N
xgZWsnXdXkz3nwZchrCJ00jiG4kzIK0jFsyauu4dvf9pRqgqqYsMbFS9FNwYSbw=
=3Wlg
-----END PGP SIGNATURE-----

References:
- [PR rtl-optimization/39077] [4.3/4.4/4.5/4.6 Regression] GCSE-optimization causes enormous binary size increase (~20 times !)
  - From: Jeff Law
- Re: [PR rtl-optimization/39077] [4.3/4.4/4.5/4.6 Regression] GCSE-optimization causes enormous binary size increase (~20 times !)
  - From: Richard Guenther
- Re: [PR rtl-optimization/39077] [4.3/4.4/4.5/4.6 Regression] GCSE-optimization causes enormous binary size increase (~20 times !)
  - From: Jeff Law
- Re: [PR rtl-optimization/39077] [4.3/4.4/4.5/4.6 Regression] GCSE-optimization causes enormous binary size increase (~20 times !)
  - From: Richard Guenther

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]