[Bug tree-optimization/47679] [4.9/5/6 Regression] Strange uninitialized warning after SRA

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47679

--- Comment #28 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Sep 18 19:33:48 2015
New Revision: 227922

URL: https://gcc.gnu.org/viewcvs?rev=227922&root=gcc&view=rev
Log:
[PATCH] const_and_copies is no longer file scoped

        PR tree-optimization/47679
        * tree-ssa-dom.c (const_and_copies): No longer file scoped.  Move
        it here ...
        (dom_opt_dom_walker): New private member holding the const_and_copies
        object.  Update constructor.
        (pass_dominator::execute): Corresponding changes to declaration
        and initialization of const_and_copies.  Update constructor call
        for the dom_opt_dom_walker object.
        (record_temporary_equivalences): Accept const_and_copies argument
        pass it down to children as needed.
        (record_equality): Likewise.
        (record_equivalences_from_incoming_edge): Likewise.
        (cprop_into_successor_phis, optimize_stmt): Likewise.
        (eliminate_redundant_computations): Likewise.
        (dom_opt_dom_walker::thread_across_edge): Update access to
        const_and_copies object and pass it to children as needed.
        (dom_opt_dom_walker::before_dom_children): Similarly.
        (dom_opt_dom_walker::after_dom_children): Similarly.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-dom.c