This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/19097] [3.4/4.0/4.1 regression] Quadratic behavior with many sets for the same register in gcse CPROP
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Sep 2005 00:14:05 -0000
- Subject: [Bug rtl-optimization/19097] [3.4/4.0/4.1 regression] Quadratic behavior with many sets for the same register in gcse CPROP
- References: <20041221015654.19097.phython@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-19 00:14 -------
For -O1 on x86_64-pc-linux-gnu:
For 4.1.0:
tree operand scan : 18.28 (50%) usr 0.10 (18%) sys 18.33 (50%) wall 402 kB ( 0%) ggc
That is the same issue as PR 21430
For both 4.0.0 and 4.1.0:
4.0.0:
dominance frontiers : 12.80 (66%) usr 0.00 ( 0%) sys 12.82 (64%) wall
4.1.0:
dominance frontiers : 10.87 (30%) usr 0.00 ( 0%) sys 10.89 (30%) wall 0 kB ( 0%) ggc
--
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn| |21430
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097