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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: "phython at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 8 Jun 2005 03:32:07 -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 phython at gcc dot gnu dot org 2005-06-08 03:32 -------
The problem with the hash table seems to be fixed in gcc 4.1, but not gcc 3.4
or 4.0. In gcc 4.1 hash_rtx is used for the implicit sets instead of the really
dumb hash_set.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097