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[Bug tree-optimization/15982] [3.5 Regression] ICE in tree-ssa-pre due to GVN-PRE
- 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: 16 Jun 2004 16:18:52 -0000
- Subject: [Bug tree-optimization/15982] [3.5 Regression] ICE in tree-ssa-pre due to GVN-PRE
- References: <20040613235648.15982.pinskia@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dberlin at gcc dot gnu dot org 2004-06-16 16:18 -------
This bug occurs because phi translation doesn't fold constants during translation.
So we end up trying to look up the value of a - 1 + 1, instead of a, and can't find it.
Whoops.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15982