[Bug tree-optimization/23157] [4.1 Regression] incorrect sharing of tree nodes regression

[pinskia at gcc dot gnu dot org]

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           What    |Removed                     |Added
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          Component|c                           |tree-optimization
           Keywords|                            |ice-on-valid-code
            Summary|incorrect sharing of tree   |[4.1 Regression] incorrect
                   |nodes regression            |sharing of tree nodes
                   |                            |regression
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23157