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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 15:26:04 -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 #7 from rguenth at gcc dot gnu dot org 2009-10-21 15:26 -------
LIM cleans up the 2nd insertion for me and moves the load next to the first
insertion. What remains is the full redundancy and elimination of all the
PHIs, so yes, your PRE patch would solve this. And yes, it is only the 2nd
loop that is vectorized for me.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41783