/* Language-level data type conversion for GNU C.
- Copyright (C) 1987, 1988, 1991, 1998, 2002, 2003, 2004, 2005, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1991, 1998, 2002, 2003, 2004, 2005, 2007, 2008,
+ 2009, 2010 Free Software Foundation, Inc.
This file is part of GCC.
#include "tree.h"
#include "flags.h"
#include "convert.h"
-#include "c-common.h"
+#include "c-family/c-common.h"
#include "c-tree.h"
#include "langhooks.h"
-#include "toplev.h"
#include "target.h"
/* Change of width--truncation and extension of integers or reals--
tree e = expr;
enum tree_code code = TREE_CODE (type);
const char *invalid_conv_diag;
+ tree ret;
+ location_t loc = EXPR_LOCATION (expr);
if (type == error_mark_node
|| expr == error_mark_node
if (type == TREE_TYPE (expr))
return expr;
+ ret = targetm.convert_to_type (type, expr);
+ if (ret)
+ return ret;
+
+ STRIP_TYPE_NOPS (e);
if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (TREE_TYPE (expr)))
- return fold_convert (type, expr);
+ return fold_convert_loc (loc, type, expr);
if (TREE_CODE (TREE_TYPE (expr)) == ERROR_MARK)
return error_mark_node;
if (TREE_CODE (TREE_TYPE (expr)) == VOID_TYPE)
error ("void value not ignored as it ought to be");
return error_mark_node;
}
- if (code == VOID_TYPE)
- return fold_convert (type, e);
- if (code == INTEGER_TYPE || code == ENUMERAL_TYPE)
- return fold (convert_to_integer (type, e));
- if (code == BOOLEAN_TYPE)
- return fold_convert (type, c_objc_common_truthvalue_conversion (expr));
- if (code == POINTER_TYPE || code == REFERENCE_TYPE)
- return fold (convert_to_pointer (type, e));
- if (code == REAL_TYPE)
- return fold (convert_to_real (type, e));
- if (code == COMPLEX_TYPE)
- return fold (convert_to_complex (type, e));
- if (code == VECTOR_TYPE)
- return fold (convert_to_vector (type, e));
- if ((code == RECORD_TYPE || code == UNION_TYPE)
- && lang_hooks.types_compatible_p (type, TREE_TYPE (expr)))
- return e;
+
+ switch (code)
+ {
+ case VOID_TYPE:
+ return fold_convert_loc (loc, type, e);
+
+ case INTEGER_TYPE:
+ case ENUMERAL_TYPE:
+ ret = convert_to_integer (type, e);
+ goto maybe_fold;
+
+ case BOOLEAN_TYPE:
+ return fold_convert_loc
+ (loc, type, c_objc_common_truthvalue_conversion (input_location, expr));
+
+ case POINTER_TYPE:
+ case REFERENCE_TYPE:
+ ret = convert_to_pointer (type, e);
+ goto maybe_fold;
+
+ case REAL_TYPE:
+ ret = convert_to_real (type, e);
+ goto maybe_fold;
+
+ case FIXED_POINT_TYPE:
+ ret = convert_to_fixed (type, e);
+ goto maybe_fold;
+
+ case COMPLEX_TYPE:
+ /* If converting from COMPLEX_TYPE to a different COMPLEX_TYPE
+ and e is not COMPLEX_EXPR, convert_to_complex uses save_expr,
+ but for the C FE c_save_expr needs to be called instead. */
+ if (TREE_CODE (TREE_TYPE (e)) == COMPLEX_TYPE)
+ {
+ tree subtype = TREE_TYPE (type);
+ tree elt_type = TREE_TYPE (TREE_TYPE (e));
+
+ if (TYPE_MAIN_VARIANT (elt_type) != TYPE_MAIN_VARIANT (subtype)
+ && TREE_CODE (e) != COMPLEX_EXPR)
+ {
+ if (in_late_binary_op)
+ e = save_expr (e);
+ else
+ e = c_save_expr (e);
+ ret
+ = fold_build2 (COMPLEX_EXPR, type,
+ convert (subtype,
+ fold_build1 (REALPART_EXPR,
+ elt_type, e)),
+ convert (subtype,
+ fold_build1 (IMAGPART_EXPR,
+ elt_type, e)));
+ goto maybe_fold;
+ }
+ }
+ ret = convert_to_complex (type, e);
+ goto maybe_fold;
+
+ case VECTOR_TYPE:
+ ret = convert_to_vector (type, e);
+ goto maybe_fold;
+
+ case RECORD_TYPE:
+ case UNION_TYPE:
+ if (lang_hooks.types_compatible_p (type, TREE_TYPE (expr)))
+ return e;
+ break;
+
+ default:
+ break;
+
+ maybe_fold:
+ if (TREE_CODE (ret) != C_MAYBE_CONST_EXPR)
+ ret = fold (ret);
+ return ret;
+ }
error ("conversion to non-scalar type requested");
return error_mark_node;