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[Bug tree-optimization/20742] [4.0/4.1 Regression] Hang in tree_ssa_iv_optimize_loop
- From: "sebastian dot pop at cri dot ensmp dot fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Apr 2005 14:50:56 -0000
- Subject: [Bug tree-optimization/20742] [4.0/4.1 Regression] Hang in tree_ssa_iv_optimize_loop
- References: <20050404113801.20742.jakub@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From sebastian dot pop at cri dot ensmp dot fr 2005-04-04 14:50 -------
Subject: Re: [4.0/4.1 Regression] Hang in tree_ssa_iv_optimize_loop
rakdver at gcc dot gnu dot org wrote:
>
> Scev probably should keep track of how large expressions it produces, and just give
> up if it grows beyond some limit.
>
Okay. What about putting this limit in chrec_fold_plus_1 and
chrec_fold_multiply? I think that this will minimize the size of the
patch for fixing this problem.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20742