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[Bug target/30052] [4.2 Regression] possible quadratic behaviour.
- From: "dberlin at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 Mar 2007 15:12:15 -0000
- Subject: [Bug target/30052] [4.2 Regression] possible quadratic behaviour.
- References: <bug-30052-7667@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #14 from dberlin at gcc dot gnu dot org 2007-03-14 15:12 -------
(In reply to comment #13)
> It's really all PTA memory.
>
> Mainline:
>
> tree PTA : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
> 40 kB ( 0%) ggc
> TOTAL : 2.18 1.05 3.44
> 48857 kB
>
> max. VM usage: 63MB
>
> 4.2:
>
> tree PTA : 18.41 (88%) usr 1.08 (53%) sys 20.32 (85%) wall
> 3903 kB ( 8%) ggc
> TOTAL : 20.92 2.02 23.94
> 48672 kB
>
> max. VM usage: 1.1GB
>
> 4.1.2 uses 56MB.
I'll backport the changes (this is more or less copying tree-ssa-structalias.c
from 4.3 to 4.2 and modifying the few things that changed in 4.3 :P)
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30052