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[Bug optimization/12662] [tree-ssa] ICE in cprop_into_phis, at tree-ssa-dom.c:1557
- From: "dberlin at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Oct 2003 23:29:37 -0000
- Subject: [Bug optimization/12662] [tree-ssa] ICE in cprop_into_phis, at tree-ssa-dom.c:1557
- References: <20031017164240.12662.lucier@math.purdue.edu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12662
dberlin at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2003-10-17 23:29:36
date| |
------- Additional Comments From dberlin at gcc dot gnu dot org 2003-10-17 23:29 -------
This is a Garbage Collection problem, because the BB annotations aren't marked, and thus, the phi
nodes don't get marked.
Because we push context in PRE (and never collect anywhere else in tree-ssa), only phi nodes PRE
creates get collected.
Zdenek has patches to do proper marking, which should fix this.