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[Bug tree-optimization/37542] [4.4 Regression] PRE doesn't simplify during phi-translation
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 22 Sep 2008 12:20:20 -0000
- Subject: [Bug tree-optimization/37542] [4.4 Regression] PRE doesn't simplify during phi-translation
- References: <bug-37542-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from rguenth at gcc dot gnu dot org 2008-09-22 12:20 -------
Current PRE simplifies only a subset of previous PRE - see
tree-ssa-pre.c:fully_constant_expression.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37542