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fold-const.c (fold_unary): Don't strip signed nops from ABS_EXPRs. 

2005-07-21  James A. Morrison  <phython@gcc.gnu.org>

        * fold-const.c (fold_unary): Don't strip signed nops from ABS_EXPRs.
        (tree_expr_nonnegative_p): Return try for TYPE_UNSIGNED.

From-SVN: r102269
This commit is contained in:
James A. Morrison 2005-07-22 03:48:00 +00:00
parent b4db223f6e
commit b49ceb450f
2 changed files with 12 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-07-21 James A. Morrison <phython@gcc.gnu.org>
* fold-const.c (fold_unary): Don't strip signed nops from ABS_EXPRs.
(tree_expr_nonnegative_p): Return try for TYPE_UNSIGNED.
2005-07-21 DJ Delorie <dj@redhat.com>
* toplev.c (warn_deprecated_use): Add warning control to warning

9
gcc/fold-const.c
View File

@ -6524,9 +6524,11 @@ fold_unary (enum tree_code code, tree type, tree op0)
arg0 = op0;
if (arg0)
{
if (code == NOP_EXPR || code == FLOAT_EXPR || code == CONVERT_EXPR)
if (code == NOP_EXPR || code == CONVERT_EXPR
|| code == FLOAT_EXPR || code == ABS_EXPR)
{
/* Don't use STRIP_NOPS, because signedness of argument type matters. */
/* Don't use STRIP_NOPS, because signedness of argument type
matters. */
STRIP_SIGN_NOPS (arg0);
}
else
@ -10686,6 +10688,9 @@ multiple_of_p (tree type, tree top, tree bottom)
int
tree_expr_nonnegative_p (tree t)
{
if (TYPE_UNSIGNED (TREE_TYPE (t)))
return 1;
switch (TREE_CODE (t))
{
case ABS_EXPR: