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[Bug tree-optimization/52631] [4.6/4.7/4.8 Regression] VN does not use simplified expression for lookup
- From: "pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 24 Mar 2012 03:10:37 +0000
- Subject: [Bug tree-optimization/52631] [4.6/4.7/4.8 Regression] VN does not use simplified expression for lookup
- Auto-submitted: auto-generated
- References: <bug-52631-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52631
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-03-24 03:10:37 UTC ---
Ok, I have a patch which only tries to looking up the simplified expression and
then if we find it, use it, otherwise use the original expression. I now
understand why this makes a difference (for FRE it does not though).