/* Utility routines for data type conversion for GCC.
Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1997, 1998,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
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, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* These routines are somewhat language-independent utility function
#include "toplev.h"
#include "langhooks.h"
#include "real.h"
+#include "fixed-value.h"
/* Convert EXPR to some pointer or reference type TYPE.
EXPR must be pointer, reference, integer, enumeral, or literal zero;
if (TREE_TYPE (expr) == type)
return expr;
+ /* Propagate overflow to the NULL pointer. */
if (integer_zerop (expr))
- {
- tree t = build_int_cst (type, 0);
- if (TREE_OVERFLOW (expr) || TREE_CONSTANT_OVERFLOW (expr))
- t = force_fit_type (t, 0, TREE_OVERFLOW (expr),
- TREE_CONSTANT_OVERFLOW (expr));
- return t;
- }
+ return force_fit_type_double (type, 0, 0, 0, TREE_OVERFLOW (expr));
switch (TREE_CODE (TREE_TYPE (expr)))
{
/* Convert EXPR to some floating-point type TYPE.
- EXPR must be float, integer, or enumeral;
+ EXPR must be float, fixed-point, integer, or enumeral;
in other cases error is called. */
tree
CASE_MATHFN (Y1)
#undef CASE_MATHFN
{
- tree arg0 = strip_float_extensions (TREE_VALUE (TREE_OPERAND (expr, 1)));
+ tree arg0 = strip_float_extensions (CALL_EXPR_ARG (expr, 0));
tree newtype = type;
/* We have (outertype)sqrt((innertype)x). Choose the wider mode from
&& (TYPE_MODE (newtype) == TYPE_MODE (double_type_node)
|| TYPE_MODE (newtype) == TYPE_MODE (float_type_node)))
{
- tree arglist;
tree fn = mathfn_built_in (newtype, fcode);
if (fn)
{
- arglist = build_tree_list (NULL_TREE, fold (convert_to_real (newtype, arg0)));
- expr = build_function_call_expr (fn, arglist);
+ tree arg = fold (convert_to_real (newtype, arg0));
+ expr = build_call_expr (fn, 1, arg);
if (newtype == type)
return expr;
}
if (fn)
{
- tree arg
- = strip_float_extensions (TREE_VALUE (TREE_OPERAND (expr, 1)));
+ tree arg = strip_float_extensions (CALL_EXPR_ARG (expr, 0));
/* Make sure (type)arg0 is an extension, otherwise we could end up
changing (float)floor(double d) into floorf((float)d), which is
incorrect because (float)d uses round-to-nearest and can round
up to the next integer. */
if (TYPE_PRECISION (type) >= TYPE_PRECISION (TREE_TYPE (arg)))
- return
- build_function_call_expr (fn,
- build_tree_list (NULL_TREE,
- fold (convert_to_real (type, arg))));
+ return build_call_expr (fn, 1, fold (convert_to_real (type, arg)));
}
}
if (itype != type && FLOAT_TYPE_P (type))
switch (TREE_CODE (expr))
{
- /* Convert (float)-x into -(float)x. This is always safe. */
+ /* Convert (float)-x into -(float)x. This is safe for
+ round-to-nearest rounding mode. */
case ABS_EXPR:
case NEGATE_EXPR:
- if (TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (expr)))
+ if (!flag_rounding_math
+ && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (expr)))
return build1 (TREE_CODE (expr), type,
fold (convert_to_real (type,
TREE_OPERAND (expr, 0))));
case BOOLEAN_TYPE:
return build1 (FLOAT_EXPR, type, expr);
+ case FIXED_POINT_TYPE:
+ return build1 (FIXED_CONVERT_EXPR, type, expr);
+
case COMPLEX_TYPE:
return convert (type,
fold_build1 (REALPART_EXPR,
/* Convert EXPR to some integer (or enum) type TYPE.
- EXPR must be pointer, integer, discrete (enum, char, or bool), float, or
- vector; in other cases error is called.
+ EXPR must be pointer, integer, discrete (enum, char, or bool), float,
+ fixed-point or vector; in other cases error is called.
The result of this is always supposed to be a newly created tree node
not in use in any existing structure. */
fn = mathfn_built_in (s_intype, BUILT_IN_LLROUND);
break;
- CASE_FLT_FN (BUILT_IN_RINT):
- /* Only convert rint* if we can ignore math exceptions. */
+ CASE_FLT_FN (BUILT_IN_NEARBYINT):
+ /* Only convert nearbyint* if we can ignore math exceptions. */
if (flag_trapping_math)
break;
/* ... Fall through ... */
- CASE_FLT_FN (BUILT_IN_NEARBYINT):
+ CASE_FLT_FN (BUILT_IN_RINT):
if (outprec < TYPE_PRECISION (long_integer_type_node)
|| (outprec == TYPE_PRECISION (long_integer_type_node)
&& !TYPE_UNSIGNED (type)))
break;
CASE_FLT_FN (BUILT_IN_TRUNC):
- {
- tree arglist = TREE_OPERAND (s_expr, 1);
- return convert_to_integer (type, TREE_VALUE (arglist));
- }
+ return convert_to_integer (type, CALL_EXPR_ARG (s_expr, 0));
default:
break;
if (fn)
{
- tree arglist = TREE_OPERAND (s_expr, 1);
- tree newexpr = build_function_call_expr (fn, arglist);
+ tree newexpr = build_call_expr (fn, 1, CALL_EXPR_ARG (s_expr, 0));
return convert_to_integer (type, newexpr);
}
}
PLUS_EXPR or MINUS_EXPR in an unsigned
type. Otherwise, we would introduce
signed-overflow undefinedness. */
- || (!flag_wrapv
+ || ((!TYPE_OVERFLOW_WRAPS (TREE_TYPE (arg0))
+ || !TYPE_OVERFLOW_WRAPS (TREE_TYPE (arg1)))
&& (ex_form == PLUS_EXPR
- || ex_form == MINUS_EXPR)
- && (!TYPE_UNSIGNED (TREE_TYPE (arg0))
- || !TYPE_UNSIGNED (TREE_TYPE (arg1)))))
- typex = lang_hooks.types.unsigned_type (typex);
+ || ex_form == MINUS_EXPR)))
+ typex = unsigned_type_for (typex);
else
- typex = lang_hooks.types.signed_type (typex);
+ typex = signed_type_for (typex);
return convert (type,
fold_build2 (ex_form, typex,
convert (typex, arg0),
/* Don't do unsigned arithmetic where signed was wanted,
or vice versa. */
if (TYPE_UNSIGNED (TREE_TYPE (expr)))
- typex = lang_hooks.types.unsigned_type (type);
+ typex = unsigned_type_for (type);
else
- typex = lang_hooks.types.signed_type (type);
+ typex = signed_type_for (type);
return convert (type,
fold_build1 (ex_form, typex,
convert (typex,
case REAL_TYPE:
return build1 (FIX_TRUNC_EXPR, type, expr);
+ case FIXED_POINT_TYPE:
+ return build1 (FIXED_CONVERT_EXPR, type, expr);
+
case COMPLEX_TYPE:
return convert (type,
fold_build1 (REALPART_EXPR,
switch (TREE_CODE (TREE_TYPE (expr)))
{
case REAL_TYPE:
+ case FIXED_POINT_TYPE:
case INTEGER_TYPE:
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
return error_mark_node;
}
}
+
+/* Convert EXPR to some fixed-point type TYPE.
+
+ EXPR must be fixed-point, float, integer, or enumeral;
+ in other cases error is called. */
+
+tree
+convert_to_fixed (tree type, tree expr)
+{
+ if (integer_zerop (expr))
+ {
+ tree fixed_zero_node = build_fixed (type, FCONST0 (TYPE_MODE (type)));
+ return fixed_zero_node;
+ }
+ else if (integer_onep (expr) && ALL_SCALAR_ACCUM_MODE_P (TYPE_MODE (type)))
+ {
+ tree fixed_one_node = build_fixed (type, FCONST1 (TYPE_MODE (type)));
+ return fixed_one_node;
+ }
+
+ switch (TREE_CODE (TREE_TYPE (expr)))
+ {
+ case FIXED_POINT_TYPE:
+ case INTEGER_TYPE:
+ case ENUMERAL_TYPE:
+ case BOOLEAN_TYPE:
+ case REAL_TYPE:
+ return build1 (FIXED_CONVERT_EXPR, type, expr);
+
+ case COMPLEX_TYPE:
+ return convert (type,
+ fold_build1 (REALPART_EXPR,
+ TREE_TYPE (TREE_TYPE (expr)), expr));
+
+ default:
+ error ("aggregate value used where a fixed-point was expected");
+ return error_mark_node;
+ }
+}