[Bug java/8709] class init optimization should check subclasses

[pinskia at gcc dot gnu dot org]

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Bug 8709 depends on bug 15576, which changed state.

Bug 15576 Summary: [4.0 Regression] Class initialization optimization is disabled
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15576

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8709