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[Bug middle-end/18499] [4.0 Regression] quadratic behavior in cfgexpand
- 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: 15 Nov 2004 10:34:32 -0000
- Subject: [Bug middle-end/18499] [4.0 Regression] quadratic behavior in cfgexpand
- References: <20041115102527.18499.steven@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From steven at gcc dot gnu dot org 2004-11-15 10:34 -------
Perhaps we should have an edge flag to mark edges dead, then walk the
entire CFG visiting all succ edges once (marking the dead ones) and
have a function remove_many_edges() in cfg.c to kill marked edges...
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18499