+2010-04-08 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/ada-tree.h (TYPE_RETURNS_UNCONSTRAINED_P): Rename into.
+ (TYPE_RETURN_UNCONSTRAINED_P): ...this.
+ (TYPE_RETURNS_BY_REF_P): Rename into.
+ (TYPE_RETURN_BY_DIRECT_REF_P): ...this.
+ (TYPE_RETURNS_BY_TARGET_PTR_P): Delete.
+ * gcc-interface/gigi.h (create_subprog_type): Adjust parameter names.
+ (build_return_expr): Likewise.
+ * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Subprogram_Type>:
+ Rename local variables. If the return Mechanism is By_Reference, pass
+ return_by_invisible_ref_p to create_subprog_type instead of toggling
+ TREE_ADDRESSABLE. Test return_by_invisible_ref_p in order to annotate
+ the mechanism. Use regular return for contrained types with non-static
+ size and return by invisible reference for unconstrained return types
+ with default discriminants. Update comment.
+ * gcc-interface/trans.c (Subprogram_Body_to_gnu): If the function
+ returns by invisible reference, turn the RESULT_DECL into a pointer.
+ Do not handle DECL_BY_REF_P in the CICO case here.
+ (call_to_gnu): Remove code handling return by target pointer. For a
+ function call, if the return type has non-constant size, generate the
+ assignment with an INIT_EXPR.
+ (gnat_to_gnu) <N_Return_Statement>: Remove dead code in the CICO case.
+ If the function returns by invisible reference, build the copy return
+ operation manually.
+ (add_decl_expr): Initialize the variable with an INIT_EXPR.
+ * gcc-interface/utils.c (create_subprog_type): Adjust parameter names.
+ Adjust for renaming of macros. Copy the node only when necessary.
+ (create_subprog_decl): Do not toggle TREE_ADDRESSABLE on the return
+ type, only change DECL_BY_REFERENCE on the RETURN_DECL.
+ (convert_from_reference): Delete.
+ (is_byref_result): Likewise.
+ (gnat_genericize_r): Likewise.
+ (gnat_genericize): Likewise.
+ (end_subprog_body): Do not call gnat_genericize.
+ * gcc-interface/utils2.c (build_binary_op) <INIT_EXPR>: New case.
+ (build_return_expr): Adjust parameter names, logic and comment.
+
2010-04-07 Eric Botcazou <ebotcazou@adacore.com>
* exp_pakd.adb (Create_Packed_Array_Type): Always use a modular type