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convert.c (convert_to_pointer): Preserve the TREE_OVERFLOW and TREE_CONSTANT_OVERFLOW bits of the argument.

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* convert.c (convert_to_pointer): Preserve the TREE_OVERFLOW
	and TREE_CONSTANT_OVERFLOW bits of the argument.  Return
	quickly if the argument is already of the correct type.
	Call fold_build1 instead of build1.  Tidy up blank lines.

From-SVN: r112511
This commit is contained in:
Roger Sayle 2006-03-29 21:55:34 +00:00 committed by Roger Sayle
parent 9b71c701c6
commit 0a931ce5d4
2 changed files with 19 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2006-03-29 Roger Sayle <roger@eyesopen.com>
* convert.c (convert_to_pointer): Preserve the TREE_OVERFLOW
and TREE_CONSTANT_OVERFLOW bits of the argument. Return
quickly if the argument is already of the correct type.
Call fold_build1 instead of build1. Tidy up blank lines.
2006-03-29 David Edelsohn <edelsohn@gnu.org>
* genemit.c (main): Add tm-constrs.h to included headers.

15
gcc/convert.c
View File

@ -33,22 +33,31 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
#include "toplev.h"
#include "langhooks.h"
#include "real.h"
/* Convert EXPR to some pointer or reference type TYPE.
/* Convert EXPR to some pointer or reference type TYPE.
EXPR must be pointer, reference, integer, enumeral, or literal zero;
in other cases error is called. */
tree
convert_to_pointer (tree type, tree expr)
{
if (TREE_TYPE (expr) == type)
return expr;
if (integer_zerop (expr))
return build_int_cst (type, 0);
{
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;
}
switch (TREE_CODE (TREE_TYPE (expr)))
{
case POINTER_TYPE:
case REFERENCE_TYPE:
return build1 (NOP_EXPR, type, expr);
return fold_build1 (NOP_EXPR, type, expr);
case INTEGER_TYPE:
case ENUMERAL_TYPE: