On Wed, Jul 13, 2011 at 9:36 AM, Kai Tietz <ktiet...@googlemail.com> wrote:
> Hello,
>
> This patch adds support to fold_unary_loc for one-bit precision
> typed bitwise-not expression.
Similar ...
> ChangeLog
>
> 2011-07-13 Kai Tietz <kti...@redhat.com>
>
> * fold-const.c (fold_unary_loc): Add
> support for one-bit bitwise-not optimizeation.
>
> Bootstrapped and regression tested with prior patches of this series
> for x86_64-pc-linux-gnu.
> Ok for apply?
>
> Regards,
> Kai
>
> Index: gcc/gcc/fold-const.c
> ===================================================================
> --- gcc.orig/gcc/fold-const.c 2011-07-13 08:49:50.000000000 +0200
> +++ gcc/gcc/fold-const.c 2011-07-13 08:56:45.170171300 +0200
> @@ -8094,6 +8094,12 @@ fold_unary_loc (location_t loc, enum tre
> if (i == count)
> return build_vector (type, nreverse (list));
> }
> + if (INTEGRAL_TYPE_P (type) && TYPE_PRECISION (type) == 1)
> + {
> + tem = fold_truth_not_expr (loc, arg0);
> + if (tem)
> + return fold_convert_loc (loc, type, tem);
> + }
>
> return NULL_TREE;
>
