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[Bug tree-optimization/35972] [4.4 Regression] load-PRE missed opportunities without SFTs
- 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: 17 Aug 2008 10:57:55 -0000
- Subject: [Bug tree-optimization/35972] [4.4 Regression] load-PRE missed opportunities without SFTs
- References: <bug-35972-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from rguenth at gcc dot gnu dot org 2008-08-17 10:57 -------
In theory elminate should handle these case, but even though phi-translation
reveals that the value of the load is available in bb 5 we do not update
avail-out if we do not end up doing an insertion.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35972