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[Bug tree-optimization/41783] r151561 (PRE fix) regresses zeusmp
- 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: 21 Oct 2009 15:16:46 -0000
- Subject: [Bug tree-optimization/41783] r151561 (PRE fix) regresses zeusmp
- References: <bug-41783-12182@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from rguenth at gcc dot gnu dot org 2009-10-21 15:16 -------
Which all is likely due to the fact that PHI translation does not properly
value-number translated loads and thus we create extra full redundancies
sometimes (usually resulting in extra PHI nodes, but here extra loads).
Micha, you once had a patch to "fix" this issue, right?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41783