You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#ifndef GFC_TRANS_H
#define GFC_TRANS_H
uses this temporary inside the scalarization loop. */
GFC_SS_CONSTRUCTOR,
- /* A vector subscript. Only used as the SS chain for a subscript.
- Similar int format to a GFC_SS_SECTION. */
+ /* A vector subscript. The vector's descriptor is cached in the
+ "descriptor" field of the associated gfc_ss_info. */
GFC_SS_VECTOR,
/* A temporary array allocated by the scalarizer. Its rank can be less
when a POST chain may be created, and what the returned expression may be
used for. Note that character strings have special handling. This
should not be a problem as most statements/operations only deal with
- numeric/logical types. */
+ numeric/logical types. See the implementations in trans-expr.c
+ for details of the individual functions. */
-/* Entry point for expression translation. */
void gfc_conv_expr (gfc_se * se, gfc_expr * expr);
-/* Like gfc_conv_expr, but the POST block is guaranteed to be empty for
- numeric expressions. */
void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr);
-/* Like gfc_conv_expr_val, but the value is also suitable for use in the lhs of
- an assignment. */
void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr);
-/* Converts an expression so that it can be passed be reference. */
void gfc_conv_expr_reference (gfc_se * se, gfc_expr *);
-/* Equivalent to convert(type, gfc_conv_expr_val(se, expr)). */
void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree);
+
/* Find the decl containing the auxiliary variables for assigned variables. */
void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr);
/* If the value is not constant, Create a temporary and copy the value. */
/* Build an ARRAY_REF. */
tree gfc_build_array_ref (tree, tree);
-/* Creates an label. Decl is artificial if label_id == NULL_TREE. */
+/* Creates a label. Decl is artificial if label_id == NULL_TREE. */
tree gfc_build_label_decl (tree);
/* Return the decl used to hold the function return value.
/* Generate code for an assignment, includes scalarization. */
tree gfc_trans_assignment (gfc_expr *, gfc_expr *);
-/* Generate code for an pointer assignment. */
+/* Generate code for a pointer assignment. */
tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *);
/* Initialize function decls for library functions. */
/* Runtime library function decls. */
extern GTY(()) tree gfor_fndecl_internal_malloc;
extern GTY(()) tree gfor_fndecl_internal_malloc64;
+extern GTY(()) tree gfor_fndecl_internal_realloc;
+extern GTY(()) tree gfor_fndecl_internal_realloc64;
extern GTY(()) tree gfor_fndecl_internal_free;
extern GTY(()) tree gfor_fndecl_allocate;
extern GTY(()) tree gfor_fndecl_allocate64;
extern GTY(()) tree gfor_fndecl_stop_string;
extern GTY(()) tree gfor_fndecl_select_string;
extern GTY(()) tree gfor_fndecl_runtime_error;
+extern GTY(()) tree gfor_fndecl_set_std;
extern GTY(()) tree gfor_fndecl_in_pack;
extern GTY(()) tree gfor_fndecl_in_unpack;
extern GTY(()) tree gfor_fndecl_associated;
}
gfc_powdecl_list;
-extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[3][2];
+extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3];
extern GTY(()) tree gfor_fndecl_math_cpowf;
extern GTY(()) tree gfor_fndecl_math_cpow;
+extern GTY(()) tree gfor_fndecl_math_cpowl10;
+extern GTY(()) tree gfor_fndecl_math_cpowl16;
extern GTY(()) tree gfor_fndecl_math_ishftc4;
extern GTY(()) tree gfor_fndecl_math_ishftc8;
+extern GTY(()) tree gfor_fndecl_math_ishftc16;
extern GTY(()) tree gfor_fndecl_math_exponent4;
extern GTY(()) tree gfor_fndecl_math_exponent8;
+extern GTY(()) tree gfor_fndecl_math_exponent10;
+extern GTY(()) tree gfor_fndecl_math_exponent16;
/* String functions. */
extern GTY(()) tree gfor_fndecl_copy_string;
arg1, arg2)
#define build3_v(code, arg1, arg2, arg3) build3(code, void_type_node, \
arg1, arg2, arg3)
+
+/* This group of functions allows a caller to evaluate an expression from
+ the callee's interface. It establishes a mapping between the interface's
+ dummy arguments and the caller's actual arguments, then applies that
+ mapping to a given gfc_expr.
+
+ You can initialize a mapping structure like so:
+
+ gfc_interface_mapping mapping;
+ ...
+ gfc_init_interface_mapping (&mapping);
+
+ You should then evaluate each actual argument into a temporary
+ gfc_se structure, here called "se", and map the result to the
+ dummy argument's symbol, here called "sym":
+
+ gfc_add_interface_mapping (&mapping, sym, &se);
+
+ After adding all mappings, you should call:
+
+ gfc_finish_interface_mapping (&mapping, pre, post);
+
+ where "pre" and "post" are statement blocks for initialization
+ and finalization code respectively. You can then evaluate an
+ interface expression "expr" as follows:
+
+ gfc_apply_interface_mapping (&mapping, se, expr);
+
+ Once you've evaluated all expressions, you should free
+ the mapping structure with:
+
+ gfc_free_interface_mapping (&mapping); */
+
+
+/* This structure represents a mapping from OLD to NEW, where OLD is a
+ dummy argument symbol and NEW is a symbol that represents the value
+ of an actual argument. Mappings are linked together using NEXT
+ (in no particular order). */
+typedef struct gfc_interface_sym_mapping
+{
+ struct gfc_interface_sym_mapping *next;
+ gfc_symbol *old;
+ gfc_symtree *new;
+}
+gfc_interface_sym_mapping;
+
+
+/* This structure is used by callers to evaluate an expression from
+ a callee's interface. */
+typedef struct gfc_interface_mapping
+{
+ /* Maps the interface's dummy arguments to the values that the caller
+ is passing. The whole list is owned by this gfc_interface_mapping. */
+ gfc_interface_sym_mapping *syms;
+
+ /* A list of gfc_charlens that were needed when creating copies of
+ expressions. The whole list is owned by this gfc_interface_mapping. */
+ gfc_charlen *charlens;
+}
+gfc_interface_mapping;
+
+void gfc_init_interface_mapping (gfc_interface_mapping *);
+void gfc_free_interface_mapping (gfc_interface_mapping *);
+void gfc_add_interface_mapping (gfc_interface_mapping *,
+ gfc_symbol *, gfc_se *);
+void gfc_finish_interface_mapping (gfc_interface_mapping *,
+ stmtblock_t *, stmtblock_t *);
+void gfc_apply_interface_mapping (gfc_interface_mapping *,
+ gfc_se *, gfc_expr *);
+
#endif /* GFC_TRANS_H */
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