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[Bug tree-optimization/38401] TreeSSA-PRE load after store misoptimization
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Dec 2008 17:27:56 -0000
- Subject: [Bug tree-optimization/38401] TreeSSA-PRE load after store misoptimization
- References: <bug-38401-16914@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from steven at gcc dot gnu dot org 2008-12-04 17:27 -------
by_all was there because you made it so on purpose. From tree-ssa-pre.c:
" For the partial anticipation case, we only perform insertion if it
is partially anticipated in some block, and fully available in all
of the predecessors.
"
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38401