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* gcc-interface/ada-tree.h (DECL_GLOBAL_NONCONSTANT_RENAMING_P): Delete (DECL_RENAMED_OBJECT): Adjust comment. * gcc-interface/gigi.h (record_global_nonconstant_renaming): Delete. (invalidate_global_nonconstant_renamings): Likewise. (gnat_constant_reference_p): Likewise. (rewrite_fn): New function type. (gnat_rewrite_reference): Declare. (call_is_atomic_load): New inline predicate. * gcc-interface/decl.c (elaborate_reference_1): New function. (elaborate_reference): Likewise. (gnat_to_gnu_entity): Call elaborate_reference to elaborate renamings and simplify associated code. Set const_flag to true consistently in conjunction with used_by_ref. * gcc-interface/trans.c (Identifier_to_gnu): Always replace renaming pointers by renamed objects. (outer_atomic_access_required_p): Deal with renamings. (Compilation_Unit_to_gnu): Do not call invalidate_global_nonconstant_renamings. (gnat_to_gnu) <N_Object_Renaming_Declaration>: Adjust comment. (gnat_gimplify_expr): Deal with atomic loads. * gcc-interface/utils.c (global_nonconstant_renamings): Delete. (destroy_gnat_utils): Do not call invalidate_global_nonconstant_renamings. (record_global_nonconstant_renaming): Delete. (invalidate_global_nonconstant_renamings): Likewise. * gcc-interface/utils2.c (call_is_atomic_load): Move to gigi.h. (build_load_modify_store): Build a copy of the destination. (gnat_stabilize_reference_1): Adjust. (gnat_stabilize_reference): Call gnat_stabilize_reference_1 through gnat_rewrite_reference and move bulk of code to... (gnat_rewrite_reference): ...here. New global function. (gnat_constant_reference_p): Delete. From-SVN: r223709
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