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[Bug rtl-optimization/19097] [3.4/4.0/4.1 regression] Quadratic behavior with many sets for the same register in gcse CPROP
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Mar 2005 23:37:05 -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 steven at gcc dot gnu dot org 2005-03-05 23:37 -------
I don't think this will be fixed for 4.1, unless we kick out implicit
sets from gcse, or all of gcse. The former may be possible if our
const/copy prop at the tree level is good enough, but I wouldn't count
on it.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097