+2010-04-13 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/ada-tree.h (TYPE_BY_REFERENCE_P): Delete.
+ (DECL_CONST_ADDRESS_P): New macro.
+ (SET_DECL_ORIGINAL_FIELD_TO_FIELD): Likewise.
+ (SAME_FIELD_P): Likewise.
+ * gcc-interface/decl.c (constructor_address_p): New static function.
+ (gnat_to_gnu_entity) <object>: Set DECL_CONST_ADDRESS_P according to
+ the return value of above function.
+ (gnat_to_gnu_entity) <E_Record_Type>: Force BLKmode for all types
+ passed by reference.
+ <E_Record_Subtype>: Likewise.
+ Set TREE_ADDRESSABLE on the type if it passed by reference.
+ (make_packable_type): Use SET_DECL_ORIGINAL_FIELD_TO_FIELD.
+ (create_field_decl_from): Likewise.
+ (substitute_in_type): Likewise.
+ (purpose_member_field): Use SAME_FIELD_P.
+ * gcc-interface/misc.c (must_pass_by_ref): Test TREE_ADDRESSABLE.
+ * gcc-interface/trans.c (lvalue_required_p): Add ADDRESS_OF_CONSTANT
+ parameter and adjust recursive calls.
+ <N_Explicit_Dereference>: New case.
+ <N_Object_Declaration>: Return 1 if the object is of a class-wide type.
+ Adjust calls to lvalue_required_p. Do not return the initializer of a
+ DECL_CONST_ADDRESS_P constant if an lvalue is required for it.
+ (call_to_gnu): Delay issuing error message for a misaligned actual and
+ avoid the associated back-end assertion. Test TREE_ADDRESSABLE.
+ (gnat_gimplify_expr) <ADDR_EXPR>: Handle non-static constructors.
+ * gcc-interface/utils.c (make_dummy_type): Set TREE_ADDRESSABLE if the
+ type is passed by reference.
+ (convert) <CONSTRUCTOR>: Convert in-place in more cases.
+ * gcc-interface/utils2.c (build_cond_expr): Drop TYPE_BY_REFERENCE_P.
+ (build_simple_component_ref): Use SAME_FIELD_P.
+
+2010-04-12 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/trans.c (Identifier_to_gnu): Use boolean variable.
+ (call_to_gnu): Test gigi's flag TYPE_BY_REFERENCE_P instead of calling
+ front-end's predicate Is_By_Reference_Type. Use consistent order and
+ remove ??? comment. Use original conversion in all cases, if any.
+ * gcc-interface/utils.c (make_dummy_type): Minor tweak.
+ (convert): Use local copy in more cases.
+ <INDIRECT_REF>: Remove deactivated code.
+ (unchecked_convert): Use a couple of local copies.
+
+2010-04-11 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/trans.c (lvalue_required_for_attribute_p): New static
+ function.
+ (lvalue_required_p) <N_Attribute_Reference>: Call it.
+ (gnat_to_gnu) <N_Selected_Component>: Prevent build_component_ref from
+ folding the result only if lvalue_required_for_attribute_p is true.
+ * gcc-interface/utils.c (maybe_unconstrained_array): Pass correctly
+ typed constant to build_component_ref.
+ (unchecked_convert): Likewise.
+ * gcc-interface/utils2.c (maybe_wrap_malloc): Likewise.
+ (build_allocator): Likewise.
+
+2010-04-11 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/utils2.c (build_cond_expr): Take the address and
+ dereference if the result type is passed by reference.
+
+2010-04-11 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/trans.c (Case_Statement_to_gnu): Bool-ify variable.
+ (gnat_to_gnu) <N_Null_Statement>: When not optimizing, generate a
+ goto to the next statement.
+
+2010-04-09 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/gigi.h (maybe_variable): Delete.
+ (protect_multiple_eval): Likewise.
+ (maybe_stabilize_reference): Likewise.
+ (gnat_save_expr): Declare.
+ (gnat_protect_expr): Likewise.
+ (gnat_stabilize_reference): Likewise.
+ * gcc-interface/decl.c (gnat_to_gnu_entity) <object>: Use
+ gnat_stabilize_reference.
+ (maybe_variable): Delete.
+ (elaborate_expression_1): Use gnat_save_expr.
+ * gcc-interface/trans.c (Attribute_to_gnu): Use gnat_protect_expr.
+ (call_to_gnu): Pass NULL to gnat_stabilize_reference.
+ (gnat_to_gnu) <N_Object_Declaration>: Use gnat_save_expr.
+ <N_Slice>: Use gnat_protect_exp.
+ <N_Selected_Component>: Pass NULL to gnat_stabilize_reference.
+ <N_In>: Use gnat_protect_expr.
+ Pass NULL to gnat_stabilize_reference.
+ (build_unary_op_trapv): Use gnat_protect_expr.
+ (build_binary_op_trapv): Likewise.
+ (emit_range_check): Likewise.
+ (emit_index_check): Likewise.
+ (convert_with_check): Likewise.
+ (protect_multiple_eval): Move to utils2.c file.
+ (maybe_stabilize_reference): Merge into...
+ (gnat_stabilize_reference): ...this. Move to utils2.c file.
+ (gnat_stabilize_reference_1): Likewise.
+ * gcc-interface/utils.c (convert_to_fat_pointer): Use gnat_protect_expr
+ instead of protect_multiple_eval.
+ * gcc-interface/utils2.c (compare_arrays): Likewise.
+ (nonbinary_modular_operation): Likewise.
+ (maybe_wrap_malloc): Likewise.
+ (build_allocator): Likewise.
+ (gnat_save_expr): New function.
+ (gnat_protect_expr): Rename from protect_multiple_eval. Early return
+ in common cases. Propagate TREE_READONLY onto dereferences.
+ (gnat_stabilize_reference_1): Move from trans.c file.
+ (gnat_stabilize_reference): Likewise.
+
+2010-04-09 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/gigi.h (gnat_mark_addressable): Rename parameter.
+ * gcc-interface/decl.c (maybe_variable): Do not set TREE_STATIC on _REF
+ node. Use the type of the operand to set TREE_READONLY.
+ * gcc-interface/trans.c (Identifier_to_gnu): Do not set TREE_STATIC on
+ _REF node. Do not overwrite TREE_READONLY.
+ (call_to_gnu): Rename local variable and fix various nits. In the
+ copy-in/copy-out case, build the SAVE_EXPR manually.
+ (convert_with_check): Call protect_multiple_eval in lieu of save_expr
+ and fold the computations.
+ (protect_multiple_eval): Always save entire fat pointers.
+ (maybe_stabilize_reference): Minor tweaks.
+ (gnat_stabilize_reference_1): Likewise. Do not deal with tcc_constant,
+ tcc_type and tcc_statement.
+ * gcc-interface/utils.c (convert_to_fat_pointer): Call
+ protect_multiple_eval in lieu of save_expr.
+ (convert): Minor tweaks.
+ (maybe_unconstrained_array): Do not set TREE_STATIC on _REF node.
+ (builtin_type_for_size): Call gnat_type_for_size directly.
+ * gcc-interface/utils2.c (contains_save_expr_p): Delete.
+ (contains_null_expr): Likewise
+ (gnat_build_constructor): Do not call it.
+ (compare_arrays): Deal with all side-effects, use protect_multiple_eval
+ instead of gnat_stabilize_reference to protect the operands.
+ (nonbinary_modular_operation): Call protect_multiple_eval in lieu of
+ save_expr.
+ (maybe_wrap_malloc): Likewise.
+ (build_allocator): Likewise.
+ (build_unary_op) <INDIRECT_REF>: Do not set TREE_STATIC on _REF node.
+ (gnat_mark_addressable): Rename parameter.
+
+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
+ if the size is small enough. Propagate the alignment if there is an
+ alignment clause on the original array type.
+ * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Modular_Integer_Subtype>
+ Deal with under-aligned packed array types. Copy the size onto the
+ justified modular type and don't lay it out again. Likewise for the
+ padding type built for other under-aligned subtypes.
+ * gcc-interface/utils.c (finish_record_type): Do not set a default mode
+ on the type.
+
+2010-04-07 Eric Botcazou <ebotcazou@adacore.com>
+
+ * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Procedure>: Set default
+ alignment on the RETURN type built for the Copy-In Copy-Out mechanism.
+
2010-04-07 Eric Botcazou <ebotcazou@adacore.com>
* gcc-interface/trans.c (call_to_gnu): In the return-by-target-ptr case
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