2014-11-26  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR ipa/61190
        * cgraph.h (symtab_node::call_for_symbol_and_aliases): Fix comment.
        (cgraph_node::function_or_virtual_thunk_symbol): New function.
        (cgraph_node::call_for_symbol_and_aliases): Fix comment.
        (cgraph_node::call_for_symbol_thunks_and_aliases): Adjust comment.
        Add new optional parameter exclude_virtual_thunks.
        * cgraph.c (cgraph_node::call_for_symbol_thunks_and_aliases): Add new
        optional parameter exclude_virtual_thunks.
        (cgraph_node::set_const_flag): Don't propagate to virtual thunks.
        (cgraph_node::set_pure_flag): Likewise.
        (cgraph_node::function_symbol): Simplified.
        (cgraph_node::function_or_virtual_thunk_symbol): New function.
        * ipa-pure-const.c (analyze_function): For virtual thunks set
        pure_const_state to IPA_NEITHER.
        (propagate_pure_const): Use function_or_virtual_thunk_symbol.

testsuite/ChangeLog:
2014-11-26  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR ipa/61190
        * g++.old-deja/g++.mike/p4736b.C: Use -O2.

From-SVN: r218091