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* gcc-interface/gigi.h (build_atomic_load): Adjust prototype. (build_atomic_store): Likewise. (build_load_modify_store): Declare. (VECTOR_TYPE_P): Delete. * gcc-interface/decl.c (gnat_to_gnu_entity): Replace Is_Atomic with Is_Atomic_Or_VFA throughout. <E_Array_Type>: Build a variant of the XUA type instead of forcing TYPE_VOLATILE on it. <E_Array_Subtype>: Use the main variant of the base type. Do not force TYPE_VOLATILE on the type being built. <E_Record_Type>: Likewise. <E_Array_Subtype>: Likewise. <E_Subprogram_Type>: Rename local variable. Add Atomic qualifier in conjunction with Volatile on types if needed. Force BLKmode for by-ref types only at the end of the processing. Change qualifiers only after changing the mode of the type. Set TYPE_UNIVERSAL_ALIASING_P on the type directly. (check_ok_for_atomic_type): Issue specific error message for VFA. (gnat_to_gnu_component_type): Replace Is_Atomic with Is_Atomic_Or_VFA throughout. * gcc-interface/misc.c (gnat_get_alias_set): Test TYPE_UNIVERSAL_ALIASING_P on the type directly. * gcc-interface/trans.c (lvalue_required_p): Replace Is_Atomic with Is_Atomic_Or_VFA throughout. Add missing guard. (node_is_atomic): New predicate. (node_has_volatile_full_access): Likewise. (gnat_strip_type_conversion): New function. (outer_atomic_access_required_p): New predicate. (atomic_sync_required_p): Rename into... (atomic_access_required_p): ...this. Add SYNC parameter, scan the parent node first and then look for the atomic setting. Add support for Volatile_Full_Access. (Call_to_gnu): Add atomic_access and outer_atomic_access parameters and adjusts calls to above functions. Use load-modify-store sequence for updates of In/Out and Out parameters if required, as well as for moving the result to the target if required. Add couple of missing guards. (gnat_to_gnu): Adjust calls to above functions. <N_Object_Renaming_Declaration>: If the renamed object has side-effects evaluate only its address. <N_Assignment_Statement>: Adjust call to Call_to_gnu. Use load-modify store sequence if required. <N_Function_Call>: Adjust call to Call_to_gnu. (extract_values): Adjust comment. * gcc-interface/utils2.c (build_atomic_load): Add SYNC parameter and use relaxed memory model if it is not set. (build_atomic_store): Likewise. (call_is_atomic_load): New predicate. (build_load_modify_store): New function. (build_binary_op) <MODIFY_EXPR>: Accept SAVE_EXPR on the LHS. (gnat_stabilize_reference) <CALL_EXPR>: Deal with atomic loads. From-SVN: r223652
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